JP7002193B2 - Cloaking device - Google Patents

Description

The present invention relates to a cloaking device.

Shielding devices such as roll curtains, blinds, accordion curtains, pleated screen doors and partitions have been put into practical use. For example, if the shielding device is a horizontal blind, when the shielding device is opened, the slats and bottom rails, which are shielding members, are pulled up by pulling the operation cord. When the horizontal blind is closed, the slats and the bottom rail are generally lowered by gravity using the weight of the slats and the bottom rail. At this time, a mechanism is known in which a braking force is applied to the elevating cord that moves with the movement of the slat and the bottom rail (particularly, the weight of the bottom rail is lowered) to reduce the downward momentum of the slat and the bottom rail. Of course, such movement is not limited to the self-weight descent, for example, automatic ascent applies to a roll curtain, and automatic lateral movement applies to an accordion curtain, for example.

Patent Document 1 describes a damper including a centrifugal governor that generates a braking force and a shaft (cord catch) connected to a brake portion, and the elevating cord comes into contact with the outer peripheral surface of the shaft to move the elevating cord. Discloses a blind elevating device with a damper, characterized in that the shaft is rotated and the brake portion is activated. By using this damper, it is possible to reliably give resistance to the movement of the elevating cord accompanying the movement of the shielding material.

Japanese Unexamined Patent Publication No. 2005-030083

However, the desired braking force differs depending on the type and size of the shielding device (hereinafter referred to as a product). Therefore, if the same damper is used for different products, the moving speed of the shielding material will be different for each product. On the other hand, if it is desired to realize different braking force for each product, different dampers are required, and as a result, an increase in the number of parts and an increase in cost become problems. Further, even if the same product is used, it is assumed that the braking force needs to be finely adjusted, or the desired braking force changes depending on the use and aging.

The present invention has been made in view of such circumstances, and provides a shielding device provided with a braking device in which the braking force can be adjusted for each product.

According to the first aspect of the present invention, the shielding device is configured so that the shielding material can be moved by pulling the tension cord, and is applied to the input applied by the tension cord which is driven by the movement of the shielding material. A braking device that generates resistance and applies the resistance to the tension cord by its reaction is provided, and the braking device includes a rotation resistor, and by rotating this, a resistance force is generated, and the number of the rotation resistors. Alternatively, a cloaking device is provided that is configured to be variable in type.

According to the second aspect of the present invention, to the shielding device configured to move the shielding material by pulling the tension cord, to the input applied by the tension cord which is driven by the movement of the shielding material. When a braking device that generates resistance and applies the resistance to the tension cord by its reaction is provided, a rotation resistor provided in the braking device that generates resistance by rotating. Provided is a method of manufacturing a cloaking device, characterized in that the number or type of the cloaking device is changed depending on the cloaking device.

According to such a shielding device, the braking force can be adjusted according to the product and the state by changing the number or type of the rotation resistors.

Hereinafter, various embodiments of the present invention will be illustrated. The embodiments shown below can be combined with each other.

Preferably, the braking device is detachably housed in a headbox.

Preferably, the case is provided with a rotation resistor holder that holds the rotation resistor detachably, and the rotation resistor revolves as the rotation resistor holder rotates.

Preferably, the case comprises a lower case for accommodating the rotation resistor and the rotation resistor holder, and an upper case for shielding the lower case, and the upper case is configured to be removable from the lower case. Will be done.

Preferably, the upper case is configured to be removable from the lower case by screwing or a snap-fit mechanism.

Preferably, the case includes a lower case for accommodating the rotation resistor and the rotation resistor holder, and an upper case for shielding the lower case, and the lower case can be opened and closed.

Preferably, the rotation resistor holder includes a mounting portion on which the rotation resistor is mounted.

Preferably, the rotary resistor holder further includes a contact portion that comes into contact with the side surface of the rotary resistor during the rotation, and the rotary resistor is attached to the contact portion by the rotation of the rotary resistor holder. It revolves when pressed and moves to the outer peripheral side of the rotation due to its centrifugal force, and the braking force is generated by friction with the inner wall of the case, which depends on the number or type of the rotational resistors. It is configured to be adjustable.

Preferably, there are a plurality of the above-mentioned mounting portions, and one rotation resistor can be mounted on one mounting portion.

Preferably, there are a plurality of the above-mentioned placement portions, which are arranged on the circumference related to the revolution of the rotation resistor, each of which is equidistant in the circumferential direction and equidistant from the rotation center of the rotation resistor holder. Will be done.

Preferably, the number of the above-mentioned placement portions is 2 to 16.

Preferably, the number of the above-mentioned placement portions is four.

Preferably, the number of the above-mentioned placement portions is eight.

Preferably, the previously described placement is substantially equal to the shape of the rotational resistor.

Preferably, the number of the rotation resistors mounted on the above-mentioned mounting portion is 2 to 16.

Preferably, a plurality of the rotation resistors are arranged on the circumference, and each of them is arranged at equal intervals in the circumferential direction and at an equal distance from the rotation center of the rotation resistor holder.

Preferably, the cloaking device is a blind device.

It is a figure which shows an example of the shielding device 100 which concerns on embodiment of this invention. It is a figure which shows an example of the shielding device 100 which concerns on embodiment of this invention. It is a figure which shows an example of the shielding device 100 which concerns on embodiment of this invention. It is an exploded perspective view of the braking device 1000 which concerns on this embodiment of this invention, (a) is a view seen from the front upper side, (b) is a view seen from the rear upper side. It is an exploded perspective view of the braking device 1000 which concerns on this embodiment of this invention, (a) is a view seen from the front lower side, (b) is a view seen from the rear lower side. It is a figure which shows the example which provided the groove 709 in the base instead of providing the protrusion 341 in the weight 340, (a) is a plan view, (b) is the cross-sectional view of the SS line cut portion. It is an assembly drawing of the braking device 1000 which concerns on this embodiment of this invention, (a) is a front perspective view, (b) is a rear perspective view, (c) is a left side view. It is an assembly drawing of the braking device 1000 which concerns on this embodiment of this invention, (a) is a plan view, (b) is a bottom view. It is an assembly drawing which removed the case 10A from the braking device 1000 which concerns on this Embodiment of this invention, (a) is a front perspective view, (b) is a rear perspective view. 7 is an assembly drawing in which the slider 220 is further removed from FIG. 7, where FIG. 7A is a front perspective view and FIG. 7B is a rear perspective view. 8 is an assembly drawing further excluding the carrier 260 with internal teeth from FIG. 8, where FIG. 8A is a front perspective view and FIG. 8B is a rear perspective view. It is sectional drawing which shows the positional relationship of the knurl 240, the slider 220 and the pinion gear 50 which concerns on this Embodiment of this invention, and is a part of the sectional drawing which passes through the substantially center of the axis 31 when viewed from the left side surface of the braking device 1000. be. It is a figure showing the alignment member 200 which concerns on this embodiment of this invention, (a) is a perspective view, (b) is a front view. It is a figure showing the case 10A which concerns on this embodiment of this invention, (a) is a front perspective view, (b) is a rear perspective view. It is a figure showing the case 10A which concerns on this Embodiment of this invention, (a) is a plan view, (b) is a perspective view seen from the lower side. It is a figure showing the slider 220 which concerns on this embodiment of this invention, (a) is a front perspective view, (b) is a rear perspective view seen from the lower side, (c) is a plan view. It is a figure showing the case 10A and the slider 220 which concerns on this Embodiment of this invention, (a) is the perspective view seen from the lower side, (b) is the perspective view seen from the upper side. FIG. 3 is an exploded perspective view showing members other than the case 10A and the slider 220 according to the present embodiment of the present invention. 5 (c) is a cross-sectional view taken along the line AA of FIG. 5 (c). 6 is a cross-sectional view taken along the line BB of FIG. 6A. FIG. 17 is a diagram showing a state in which the braking device 1000 of the present invention brakes the cord CD using FIG. 17, in which (a) is a state in which no tension is applied to the cord CD (steady state), and (b) is a state in which the cord CD is braked. When tension is applied and the cord CD is sandwiched between the knurl 240 and the roller portion 42 (sandwiched state), (c) summarizes the rotation directions of each member when the state changes from (a) to (b). It is a figure. In the weight holder 320 with a sun gear according to the embodiment of the present invention, the case where the number of weights 340 to be held is changed is shown. It is a figure for demonstrating another mounting position of the braking device which concerns on embodiment of this invention. It is a schematic diagram which shows the braking device 2000 which concerns on a modification. It is a schematic diagram which shows the braking device 3000 which concerns on the modification. It is a schematic diagram which shows the holder 320c which is a modification which can hold the wind blade 340c instead of the weight holder 320 with a sun gear which concerns on embodiment of this invention. The case where the weight 340 according to the embodiment of the present invention has two sizes is shown. An example of a weight holder 320a according to a conventional technique capable of holding only one weight 340 is shown.

Hereinafter, a preferred embodiment of the braking device according to the present invention and the shielding device using the braking device will be described in detail with reference to the drawings.

1. 1. This Embodiment 1-1 <Overall configuration>
1A to 1C are views showing the shielding device 100 of the present embodiment.
The shielding device 100 shown in FIG. 1A is a horizontal blind (only an example), and a plurality of stages of solar shielding members (slats) 101 are suspended and supported from a hollow head box 130 via a plurality of ladder cords 123. A bottom rail 122 is suspended and supported at the lower end of the ladder code 123. The head box 130 is composed of a top surface 131, a bottom surface 132, and a side surface 133. Then, box caps 134 are provided at both ends thereof. Further, inside the head box 130, a cord outlet 135 for inserting a cord CD into the operation rod 108 is provided. The ladder code 123 is a form of a “sunlight shielding member support code”. The configuration of the "sunlight shielding member support cord" is not limited as long as it can support and rotate the solar radiation shielding member 101. It may be configured such that it is attached to one edge and the other warp is attached to the other edge of the slats.

A plurality of support members (not shown) are arranged in the head box 130, and a tilt drum (not shown) is rotatably supported by the support members. The upper end of the ladder code 123 is attached to the tilt drum, and the shaft 124 (shaft member) is fitted into all the tilt drums at the center of the tilt drum. Therefore, when the shaft 124 is rotated, all the tilt drums are rotated, and one of the warps of the ladder code 123 is pulled up with the rotation of the tilt drums, so that the solar radiation shielding member 101 and the bottom rail 122 are separated from each other. The angle is adjusted in the same phase.

An operation rod 108 made of a tubular body is suspended and supported at one end of the head box 130, and an operation unit 120 is provided at the lower end of the operation rod 108. When the operation unit 120 is gripped and the operation rod 108 is rotated, the angle adjusting shaft is rotated via the gear mechanism arranged in the head box 130. Therefore, the angle of each solar radiation shielding member 101 can be adjusted by rotating the operation rod 108.

A plurality of (three in this embodiment) lifting cords 102l, 102c, 102r (simply referred to as "lifting cord 102" when distinction is not necessary) are suspended from the head box 130, and each lifting cord is suspended. One end of 102 is attached to the bottom rail 122. A turning pulley (not shown) is axially supported on each support member at the axial center in the front and back directions of the drawing, and the elevating cord 102 introduced in the head box 130 can be turned and guided in the left-right direction of the head box. Further, each support member has a space through which another elevating cord can pass in the left-right direction. Therefore, the other end of the elevating cord 102r at the right end is turned and guided by the support member, and the elevating cords on the non-operation side (the elevating cords 102l and 102c at the left end and the center) pass through the support members and pass through the support member to the inside of the head box 130. You will be guided in the direction. Then, it is inserted into the cylindrical operation rod 108 via the lock portion 104 and the braking device 1000 provided in the head box 130, and the tip thereof is connected to the cord equalizer 121 provided below the operation portion 120. Therefore, when the cord equalizer 121 is pulled downward and the elevating cord 102 is pulled out from the head box 130, the bottom rail 122 is pulled up and the solar shielding member 101 is pulled up.

The braking device 1000 is arranged on the bottom surface 132 of the headbox 130, and both ends thereof are positioned by the side surface 133. Instead of arranging the braking device 1000 on the bottom surface 132, the braking device 1000 may be arranged on another member provided on the bottom surface 132. At this time, as shown in FIG. 1B, a mounting portion (mounting cylinder 702) for fixing the arrangement in the head box 130 is provided on the bottom surface of the braking device 1000 (outside the bottom surface of the base 70), and the head is provided. The mounting cylinder 702 is mounted in the mounting recess 136 provided on the bottom surface of the box 130. This makes it possible to stably arrange the braking device 1000 in the head box 130.

Further, as shown in FIG. 1B, the braking device 1000 is arranged so as to be sandwiched between the mounting surface in the head box 130 and the shaft 124. That is, the roller (knurl 240 described later) is configured to be movable in the horizontal direction in the head box 130, and the number of code CDs is from the side (right side in FIG. 1A) having a large number of code CDs in the head box 130. The braking device 1000 is arranged in the head box 130 so as to move from the second position to the first position toward the side with less knurling (right side in FIG. 1A). Further, the braking device 1000 is arranged so that the rotation axis of the planetary gear 280 faces in the vertical direction in the head box 130. Further, the lock portion 104 is arranged in front of the braking device 1000.

FIG. 1B is a partially enlarged view of the region Z in FIG. 1A (a). As shown in FIGS. 1B and 1C, the cord CD is guided to the lock portion 104 in a horizontally aligned state, then twisted, and guided to the braking device 1000 in a vertically aligned state. Then, after being output from the braking device 1000, the brake device 1000 is diagonally aligned and guided to the cord outlet 135.

1-2 <Brake device>
Next, the braking device 1000 will be described with reference to FIGS. 2 to 19. The braking device 1000 according to the present embodiment is a braking device that brakes the movement of the cord. Specifically, in the braking device 1000 according to the present embodiment, the mechanism related to the motion conversion unit and the mechanism related to the resistance applying unit are provided so as to be positioned substantially vertically. Here, in the present embodiment, as shown in FIG. 2, an idle roller 40 including a slider 220, a coil spring SP, a shaft core 41 and a roller portion 42, a lorlet 240, a pinion gear 50, a shaft core 31, and a washer 241 , Carrier with internal teeth 260 and planetary gear 280 constitute a motion conversion unit, weight 340 (an example of "rotational resistor" in the scope of the patent claim), weight holder 320 with the sun gear ("rotation" in the scope of the patent claim. An example of a "resistor holder") and the case 10A constitute a resistance applying portion.

2 and 3 are exploded perspective views of the braking device 1000 according to the present embodiment. The braking device 1000 includes an alignment member 200, a case 10A, a slider 220, a coil spring SP, an idle roller 40 including a shaft core 41 and a roller portion 42, a lorlet 240, a pinion gear 50, a lorlet 240, and a shaft core through which the pinion gear 50 is inserted. It is composed of 31, a washer 241 and a carrier with internal teeth 260, a planetary gear 280, a plate 300, a weight holder 320 with a sun gear, a weight 340, and a base 70.

In the present embodiment, the idle roller 40 and the knurl 240 function as a sandwiching body for sandwiching the cord. Further, the idle roller 40 functions as a support column, and the knurl 240 functions as a roller that rotates due to the movement of the cord in the longitudinal direction. Further, the slider 220 holds the idle roller 40 and the knurl 240.

As shown in FIGS. 2 and 3, in the present embodiment, the carrier 260 with internal teeth is provided with four planetary gears 280, and the weight holder 320 with sun gears holds eight weights 340. Hereinafter, each member will be described.

1-2-1 <Alignment member 200>
As shown in FIGS. 5A and 5B, the alignment member 200 inserts the cord CD and adjusts the orientation of the cord CD. Further, a plurality of code CDs are arranged in the same direction with each other. The alignment member 200 can be formed of, for example, a resin such as plastic. Here, as shown in FIG. 5A, the directions of the arrows are front-back, left-right, and up-down, respectively. That is, the direction in which the distance between the first top wall groove 16 and the second top wall groove 17 shown in FIG. 6 is narrowed is defined as the front, and the left-right direction (width direction) and the up-down direction are determined.

As shown in FIG. 11A, the alignment member 200 includes a front wall portion 205, a right side wall portion 207 and a left side wall portion 208 connected to the front wall portion 205, and a right side wall portion 207 and a left side wall portion 208. It has a rear wall portion 206, which is connected to each of the above. The shapes of the front wall portion 205, the right side wall portion 207, the left side wall portion 208, and the rear wall portion 206 are arbitrary, but in the present embodiment, each has a substantially rectangular shape. Further, in the present embodiment, the front wall portion 205 and the rear wall portion 206 have substantially symmetrical shapes.

The front wall portion 205 is formed with a first front groove 201, a first front cord insertion portion 201A, a second front groove 202, and a second front cord insertion portion 202A. Further, the rear wall portion 206 is formed with a first rear groove 203, a first rear cord insertion portion 203A, a second rear groove 204, and a second rear cord insertion portion 204A.

The first front cord insertion portion 201A and the second front cord insertion portion 202A are for inserting the cord CD into the alignment member 200 after assembling the braking device 1000. The first front cord insertion portion 201A is formed wider than the first front groove 201. Further, the second front cord insertion portion 202A is formed to be wider than the second front groove 202. Therefore, the cord CD is inserted into the first front cord insertion portion 201A and the second front cord insertion portion 202A, and the cord CD is slid toward the first front groove 201 and the second front groove 202 as it is. It is possible to insert smoothly.

Further, in the first rear cord insertion portion 203A and the second rear cord insertion portion 204A, the cord CD inserted through the front wall portion 205 passes through the front and rear through holes 225 (see FIG. 14) of the slider 220 described later, and is engaged. This is for pulling out the cord CD from the rear wall portion 206 to the outside. The first rear cord insertion portion 203A is formed wider than the first rear groove 203. Further, the second rear cord insertion portion 204A is formed wider than the second rear groove 204. Therefore, the code CD is inserted into the first rear cord insertion portion 203A and the second rear cord insertion portion 204A, and the cord CD is slid toward the first rear groove 203 and the second rear groove 204 as it is, thereby inserting the code CD. It is possible to insert smoothly.

The shapes of the first front cord insertion portion 201A, the second front cord insertion portion 202A, the first rear cord insertion portion 203A, and the second rear cord insertion portion 204A are arbitrary and are not limited to the shapes shown in FIG. For example, it may be substantially circular, or may be connected to the first front groove 201 (the same applies to other grooves) from a vertically elongated shape to an oblique shape. Further, in the present embodiment, a step 210 is provided between the first front cord insertion portion 201A and the first front groove 201, but the step 210 is not provided and the front wall portion 205 (or the rear wall portion 206) is provided. May be a substantially rectangular shape.

As shown in FIG. 11B, in the present embodiment, the front wall portion 205 and the rear wall portion 206 have substantially the same shape in front view. Therefore, the code CD inserted from the first front cord insertion portion 201A (not shown in FIG. 11) passes through the first rear cord insertion portion 203A, and the code CD inserted from the second front cord insertion portion 202A is the first. 2 Passes through the rear cord insertion portion 204A. In other words, the first front groove 201 and the first front cord insertion portion 201A and the first rear groove 203 and the first rear cord insertion portion 203A are a pair of corresponding grooves, respectively, and the second front groove 202 and the second front cord The insertion portion 202A and the second rear groove 204 and the second rear cord insertion portion 204A are a pair of corresponding grooves.

Here, as shown in FIG. 11A, the right side wall portion 207 of the alignment member 200 is arranged so as to cover the braking device 1000 (not shown in FIG. 11) from above the case 10A at the time of assembly. At this time, a claw portion 209 for engaging with the engaging hole 19 (see FIG. 12) of the case 10A, which will be described later, and fixing the alignment member 200 to the case 10A is provided. Although not shown in FIG. 11, a similar claw portion 209 is also provided on the left side wall portion 208. As a result, the two claw portions 209 provided on the alignment member 200 and the two engaging holes 19 provided on the left and right sides of the case 10A can be firmly engaged (so-called snap fit). It may be screwed.

1-2-2 <Case 10A>
Next, the case 10A will be described with reference to FIGS. 12 (a) and 12 (b) and FIG. Hereinafter, in FIG. 13, the leftward direction is referred to as the front, the rightward direction is referred to as the rearward, the upwardward direction is referred to as the right side, and the downward direction is referred to as the left side. The case 10A constitutes a housing together with a base 70 (see FIG. 16 and the like), and inside the housing, an idle roller 40 and a knurl 240 including a slider 220, a coil spring SP, a shaft core 41, and a roller portion 42 shown in FIG. , Pinion gear 50, shaft core 31, washer 241, carrier with internal teeth 260, planetary gear 280, plate 300, weight holder 320 with sun gear, and weight 340.

Further, the case 10A constitutes the housing of the braking device 1000 together with the base 70 shown in FIG. 16, for example. Further, for example, together with the weight holder 320 with a sun gear and the weight 340 shown in FIG. 16, a resistance applying portion is formed.

As shown in FIG. 12, in the case 10A, the top wall portion 11 having a substantially square outer shape, the front side wall portion 12f, the right side wall portion 12r and the left side wall portion connected to the front side wall portion 12f and the top wall portion 11 12l, a rear side wall portion 12b connected to each of the right side wall portion 12r and the left side wall portion 12l, and a front side wall portion 12f, a rear side wall portion 12b, a right side wall portion 12r, and a left side wall portion facing the top wall portion 11. The main configuration includes a flange portion 13 extending from 12l toward the radial side, a cylindrical portion 13C connected to the flange portion 13, and a cover portion 112 connected to the cylindrical portion 13C.

Guide grooves 113 are formed in the front side wall portion 12f and the rear side wall portion 12b. These two guide grooves 113 face each other in the front-rear direction. These guide grooves 113 are grooves for inserting the cord CD in the front-rear direction. Here, the number of cord CDs to be inserted into the guide groove 113 is not particularly limited, but in the present embodiment, an example in which three cord CDs are inserted in the vertical direction is shown (see FIG. 5).

Further, the right side wall portion 12r and the left side wall portion 12l are provided with engagement holes 19. As described above, the engagement hole 19 engages with the claw portion 209 of the alignment member 200 and fixes the alignment member 200 to the case 10A.

Further, a support groove 114 is provided above the left and right engaging holes 19. As shown in FIG. 5, the support groove 114 supports the protrusion 230 provided on the slider 220 when the case 10A holds the slider 220 inside. As a result, the slider 220 can be supported in a floating state. The details will be described later.

As shown in FIG. 12, the top wall portion 11 is formed with a first top wall groove 16 and a second top wall groove 17. As shown in FIG. 13A, the first top wall groove 16 and the second top wall groove 17 are each formed obliquely with respect to the longitudinal direction, that is, the front-rear direction of the cord CD, and one of the cord CDs is formed. The distance between the first top wall groove 16 and the second top wall groove 17 is reduced toward the front in the longitudinal direction. Further, the first top wall groove 16 is formed in an arc shape, and the arc of the first top wall groove 16 is concentric with the inner peripheral surface of the carrier with internal teeth 260 shown in FIG. 8 in a plan view. Is formed in. On the other hand, the second top wall groove 17 is formed in a shape that draws a gentle curve. Specifically, the second top wall groove 17 has a substantially linear shape on the front side, and is curved in a direction away from the first top wall groove 16 toward the rear. This is because, when the second top wall groove 17 is made substantially linear, the first top wall groove 16 is an arc that approaches the code CD from the rear to the front, so that, for example, the shaft core 31 and the shaft core 41 This is to prevent the displacement in the vertical direction with respect to the cord CD from being different between the shaft core 31 and the shaft core 41 when moving along the first top wall groove 16 and the second top wall groove 17, respectively. That is, if one is an arc and the other is a substantially straight line, the vertical distance to the code CD differs in the front-back direction. By making the displacements of the shaft core 31 and the shaft core 41 in the vertical direction close to each other in this way, the knurl 240 and the roller portion 42 can appropriately sandwich the cord CD. The second top wall groove 17 is not limited to this, and for example, a groove having substantially the same shape as the first top wall groove 16 may be arranged to be curved toward the cord CD side. As a result, the displacement in the vertical direction with respect to the CD can be made substantially the same for the shaft core 31 and the shaft core 41, and the wear of the cord CD can be reduced. Here, in the present embodiment, in addition to making the displacement in the vertical direction with respect to the CD as similar as possible between the shaft core 31 and the shaft core 41, in consideration of the interaction due to the movement of other members and the like, FIG. 13 ( The shape shown in a) was adopted.

On the edge of the first top wall groove 16, as shown in FIGS. 12 (a), 12 (b), and 13 (a), the outside of the case 10A in the first top wall groove 16 in the plan view of the case 10A. A first guide wall 16A projecting upward from the first top wall groove 16 is provided at least in a part of the position along the edge of the above. In the present embodiment, the first guide wall 16A is provided so as to be approximately 90 degrees with respect to the first top wall groove 16. The first guide wall 16A is intended to reduce the surface pressure of the shaft core 31 moving along the first top wall groove 16. That is, by providing the first guide wall 16A, the area in contact with the shaft core 31 is increased, so that the surface pressure of the shaft core 31 is reduced. This is because tension is applied to the cord CD and the surface pressure of the shaft core 31 is applied to the inner surface of the first top wall groove 16 while the braking device 1000 is operating, and the surface pressure applies to the first top wall groove. This is because if the inner surface of 16 is scraped, the distance between the knurl 240 and the roller portion 42 changes, and the rotation transmission to the knurl 240 may become insufficient. By providing the first guide wall 16A, it is possible to prevent the case 10A from being scraped by the pressure from the shaft core 31. The wall thickness of the first guide wall 16A is arbitrary, but it may be appropriately designed in consideration of the material of the case 10A, the moving speed of the shaft core 31, and the like.

Further, in the plan view of the case 10A, the position along the outer edge of the case 10A in the second top wall groove 17 is at least a part of the position along the edge located far from the center of the case 10A. 2 A second guide wall 17A projecting upward from the top wall groove 17 is provided. In the present embodiment, the second guide wall 17A is provided so as to be approximately 90 degrees with respect to the second top wall groove 17. The purpose of the second guide wall 17A is to reduce the surface pressure of the shaft core 41 moving along the second top wall groove 17. That is, by providing the second guide wall 17A, the area in contact with the shaft core 41 is increased, so that the surface pressure of the shaft core 41 is reduced. This is because tension is applied to the cord CD and the surface pressure of the shaft core 41 is applied to the inner surface of the second top wall groove 17 while the braking device 1000 is operating, and the surface pressure is applied to the second top wall groove. This is because if the inner surface of 17 is scraped, the distance between the knurl 240 and the roller portion 42 changes, and the rotation transmission to the knurl 240 may become insufficient. By providing the second guide wall 17A, it is possible to prevent the case 10A from being scraped by the pressure from the shaft core 41. The wall thickness of the second guide wall 17A is arbitrary, but it may be appropriately designed in consideration of the material of the case 10A, the moving speed of the shaft core 41, and the like.

When the case 10A is molded from a strong material such as metal, it is not necessary to provide the first guide wall 16A and the second guide wall 17A. This is because the case 10A is robust, so that the case 10A is hardly scraped by the pressure from the shaft core 31 and the shaft core 41.

The flange portion 13 faces the top wall portion 11 and extends radially from the front side wall portion 12f, the rear side wall portion 12b, the right side wall portion 12r, and the left side wall portion 12l. It is said to be approximately circular.

The cylindrical portion 13L is connected to the flange portion 13 and is located outside the inner peripheral gear 115. In the present embodiment, the cylindrical portion 13C has a substantially cylindrical shape.

The cover portion 112 is a portion connected to the cylindrical portion 13C and fitted with the base 70. In the present embodiment, the outer edge of the cover portion 112 is a substantially square shape. The cover portion 112 is provided with two first engaging grooves 111A at both ends of the left and right side surfaces. Two second engaging grooves 111B are provided at both ends of the front end portion, and one second engaging groove 111B is provided at substantially the center of the rear end portion. The first engaging groove 111A engages with the first engaging plate portion 701A of the base 70 shown in FIG. 7. Further, the second engaging groove 111B engages with the second engaging plate portion 701B of the base 70.

According to the above configuration, the case 10A (an example of the "upper case" in the claims) and the base 70 (an example of the "lower case" in the claims) are engaged to form a housing. .. It is a so-called snap fit, but it may be screwed. With such a configuration, the number of weights 340 placed on the weight holder 320 with sun gears can be changed in order to obtain a desired braking force in the braking device 1000 or to adjust the braking force.

Next, the internal structure of the case 10A will be described with reference to FIGS. 13 (b) and 15. As shown in FIG. 17, a ring-shaped inner peripheral gear 115 meshing with the planetary gear 280 is formed inside the case 10A. A substantially ring-shaped corrugated portion 116 is formed on the upper portion of the inner peripheral gear 115 in a plan view. The corrugated portion 116 has a shape in which a portion having a small horizontal distance and a portion having a large horizontal distance from the center of a circle passing through the center of the inner peripheral gear 115 are alternately arranged, and has a zigzag shape in a plan view. Specifically, it has a polygonal shape formed by connecting a large number of straight lines. Further, a step 117 is provided on the inner surface side surface of the flange portion 13. By providing the corrugated portion 116 and the step 117, it is possible to facilitate the positioning of other members such as the carrier 260 with internal teeth and reduce the frictional resistance.

Further, as shown in FIG. 15, four grooves 118 are formed on the left and right inner side surfaces of the case 10A. The groove 118 is for passing the protrusion 230 of the slider 220, which will be described later, when assembling or disassembling the braking device 1000. In the present embodiment, since the slider 220 has four protrusions 230, the case 10A is also provided with four grooves 118.

1-2-3 <Slider 220>
Next, the slider 220 will be described with reference to FIG. The slider 220 corresponds to a moving member that holds the idle roller 40 and the knurl 240 inside and moves together with the idle roller 40 and the knurl 240. The slider 220 has a top wall portion 221, a rear side wall portion 222 and a front side wall portion 224 connected to the top wall portion 221 and a bottom wall portion 223 connected to each of the rear side wall portion 222 and the front side wall portion 224. Have.

The top wall portion 221 has a shape in which a pair of grooves are formed in a substantially rectangular shape. These pair of grooves are referred to as a first top wall groove 226 and a second top wall groove 227, respectively. The first top wall groove 226 and the second top wall groove 227 are linear grooves extending in the left-right direction, respectively, and are arranged in a straight line with each other.

The bottom wall portion 223 faces the top wall portion 221. In the present embodiment, the bottom wall portion 223 has substantially the same shape as the top wall portion 221. However, the top wall portion 221 and the bottom wall portion 223 may have different shapes. A pair of grooves formed in a straight line in the left-right direction are also formed in the bottom wall portion 223, and these pair of grooves are referred to as a first bottom wall groove 228 and a second bottom wall groove 229, respectively. The first bottom wall groove 228 faces the first top wall groove 226 in the vertical direction, and the second bottom wall groove 229 faces the second top wall groove 227 in the vertical direction. Therefore, when the slider 220 is viewed in a plan view, the upper and lower grooves appear to overlap each other as shown in FIG. 14 (c).

Here, the width of the first top wall groove 226 and the first bottom wall groove 228 is large enough to accommodate the diameter of the shaft core 31. Further, the width of the second top wall groove 227 and the second bottom wall groove 229 is large enough to accommodate the shaft core 41.

Further, the top wall portion 221 is provided with protrusions 230 at its four corners so as to project to the left and right of the top wall portion 221. As shown in FIG. 5, the protrusion 230 is housed in the support groove 114 of the case 10A, and is for supporting the slider 220 in a floating state inside the case 10A. That is, the slider 220 is held in a non-contact state with the carrier 260 with internal teeth located below.

Through holes 225 are formed in the front side wall portion 224 and the rear side wall portion 222. The through hole 225 penetrates the front side wall portion 224 and the rear side wall portion 222 in the front-rear direction at substantially the center in the width direction of the front side wall portion 224 and the rear side wall portion 222. The shape of the hole is arbitrary, but at least one cord CD can be inserted. Preferably, the shape is such that a plurality of cord CDs can be inserted in a vertically aligned state. In this embodiment, the shape is a substantially oval shape that is long in the vertical direction.

Further, as shown in FIG. 14B, the rear side wall portion 222 is formed with recesses 231 formed from the outer surface of the rear side wall portion 222 on both sides of the through hole 225. The shape of the recess 231 is arbitrary, and may be a shape cut out from the through hole 225 to the side surface side as shown in FIG. 14 (b), or may be a substantially circular or substantially rectangular recess. Further, in the present embodiment, the coil spring SP is arranged in the recess 231 on the left side, and one end of the coil spring SP protrudes from the recess 231. Then, at the time of assembling the braking device 1000, the slider 220 comes into contact with the inner wall of the case 10A and urges the slider 220 forward. In FIG. 14, the portion of the coil spring SP protruding from the recess 231 is omitted. Further, the coil spring SP may be arranged in the recess 231 on the right side. Further, the coil spring SP may be arranged in both the left and right recesses 231.

The horizontal size of the slider 220 having such a shape is substantially the same as the distance between the inner walls in the width direction of the case 10A, and the size in the front-rear direction of the slider 220 is between the inner walls in the front-rear direction of the case 10A. It is made smaller than the distance. Therefore, when the slider 220 is arranged in the space of the case 10A, the side surfaces of the top wall portion 221 and the bottom wall portion 223 of the slider 220 abut on the inner wall surface in the width direction of the case 10A, and the slider 220 is attached to the case 10A. On the other hand, movement is restricted in the width direction. In this state, the guide groove 113 of the case 10A and the through hole 225 of the slider 220 are aligned in the front-rear direction with each other. That is, the through hole 225 is a hole for inserting the cord CD into the slider 220. On the other hand, in a state where the slider 220 is arranged in the space of the case 10A, a gap is generated in the front-rear direction between the slider 220 and the inner wall surface of the case 10A, and the slider 220 moves in the front-rear direction with respect to the case 10A. be able to. Further, with the slider 220 arranged in the space of the case 10A, the coil spring SP protruding from the recess 231 of the rear side wall portion 222 of the slider 220 presses the inner wall behind the case 10A. Therefore, with the slider 220 arranged in the space of the case 10A, the slider 220 is located on the front side and is pressed forward in the case 10A.

Here, the protrusion 230 of the slider 220 will be described in detail with reference to FIG. As shown in FIG. 15, when assembling the braking device 1000, the slider 220 is arranged so as to be located below the inside of the case 10A, and is relatively moved in the vertical direction so that the two are close to each other. Then, the protrusion 230 provided on the slider 220 is passed through the groove 118 provided inside the case 10A. In FIG. 15A, the groove 118 is emphasized in order to enhance visibility. Then, as shown in FIG. 5, the case 10A and the slider 220 are brought close to each other until the protrusion 230 reaches the support groove 114. Then, the coil spring SP provided on the slider 220 comes into contact with the inner wall behind the case 10A, and the slider 220 is urged forward so that the protrusion 230 is located in front of the groove 118. Therefore, once the slider 220 is attached to the case 10A, it is possible to prevent the protrusion 230 from coming off the support groove 114. The groove 118 serves to pass the protrusion 230 not only when the braking device 1000 is assembled but also when it is disassembled. In this case, the slider 220 is moved rearward relative to the case 10A against the urging force of the coil spring SP, and when the protrusion 230 reaches the position of the groove 118, the slider 220 is moved with respect to the case 10A. It may be moved relatively downward.

With such a configuration, the slider 220 can be supported in a floating state inside the case 10A. Therefore, it is possible to prevent the slider 220 from coming into contact with other parts such as the carrier with internal teeth 260, and it is possible to reduce or eliminate unnecessary resistance. Therefore, it is possible to reduce the consumption of each member.

1-2-4 <Idle roller 40, knurl 240 and pinion gear 50>
Next, the idle roller 40, the knurl 240, and the pinion gear 50 will be described with reference to FIGS. 3 and 16.

The idle roller 40 is composed of a roller portion 42 and a shaft core 41. Further, the idle roller 40 has a shaft core 41 parallel to the shaft core 31 of the knurl 240, and a roller portion 42 covering the outer peripheral surface of the shaft core 41. Therefore, the rotation axis of the knurl 240 and the rotation axis of the idle roller 40 are parallel to each other. The outer diameter of the roller portion 42 of the idle roller 40 is larger than the outer diameter of the knurl 240. The outer peripheral surface of the roller portion 42 of the idle roller 40 has a higher coefficient of friction than the flat surface of the metal. Further, both ends of the shaft core 41 are exposed from the roller portion 42.

One end of the shaft core 31 is inserted in the center of the knurl 240. A pinion gear 50 is inserted at the other end of the shaft core 31. The knurl 240 can be made of any material, for example stainless steel can be used.

The idle roller 40 and the knurl 240 are held inside the slider 220. Further, the pinion gear 50 is held outside the slider 220. Here, the positional relationship between the knurl 240, the slider 220, and the pinion gear 50 will be described with reference to FIG. FIG. 10 is a part of a cross-sectional view passing through the substantially center of the shaft core 31 when viewed from the left side surface of the braking device 1000 according to the present embodiment. As shown in FIG. 10, when the braking device 1000 is assembled, the knurl 240 and the pinion gear 50 sandwich the bottom wall portion 223 of the slider 220. Further, in the present embodiment, the pinion gear 50 is provided with a step 51 in order to reduce the contact area between the pinion gear 50 and the slider 220. As a result, when the knurl 240 and the pinion gear 50 rotate integrally via the shaft core 31, the sliding resistance between the pinion gear 50 and the slider 220 can be reduced. This makes it possible to smooth the rotation operation. In order to reduce the resistance, in the present embodiment, the washer 241 (see FIGS. 2 and 3) is bitten by the shaft core 31 on the lower side of the pinion gear 50.

1-2-5 <Carrier 260 with internal teeth and planetary gear 280>
Next, the carrier 260 with internal teeth and the planetary gear 280 will be described with reference to FIGS. 2 and 16. In the present embodiment, the carrier 260 with internal teeth has a substantially donut shape in a plan view. The carrier with internal teeth 260 includes a flange 262 that projects outward from the cylindrical portion 264 in a plan view.

An internal gear 261 that meshes with the pinion gear 50 is formed on the inner peripheral surface of the cylindrical portion 264. Then, the flange 262 is formed with a support shaft 263 that projects downward in the vertical direction. The number of support shafts 263 is not particularly limited, but it is particularly preferable that the number of support shafts 263 is evenly spaced. In this embodiment, as an example, four support shafts 263 are provided.

A planetary gear 280 is rotatably supported on each of the support shafts 263. The planetary gear 280 meshes with the sun gear 323, which will be described later, and the inner peripheral gear 115 provided inside the case 10A. Then, it is possible to revolve around the center of the internal gear 261. Therefore, the rotation of the pinion gear 50 is transmitted to the internal gear 261 to rotate the carrier with internal teeth 260, and the carrier 260 with internal teeth is rotatably supported by the support shaft 263 provided on the flange 262 of the carrier 260 with internal teeth. The rotation of the planetary gear 280 makes it possible to accelerate the rotation caused by the pinion gear 50. Further, the planetary gear 280 is provided with a step 281. The step makes it possible to avoid contact with other members.

1-2-6 <Weight holder 320 with sun gear and weight 340>
Next, the weight holder 320 with the sun gear and the weight 340 will be described with reference to FIGS. 2 and 16. The weight holder 320 with a sun gear has a convex portion 321 (an example of a “contact portion” in the claims) and a concave portion 322 (“mounting” in the claims) toward the outside of the ring-shaped ring portion 324. An example of "part") is formed alternately side by side. As shown in FIG. 2, on the outer peripheral surface of the ring portion 324, a sun gear 323 meshing with the planetary gear 280 is provided so that the rotation axis faces substantially perpendicular to the extending direction of the convex portion 321. Be done. A weight 340 is arranged in each recess 322. That is, it can be said that the weight holder 320 with a sun gear is a member that holds the weight 340 in each recess 322 with the convex portion 321 as a boundary when the braking device 1000 is assembled. The number of weights 340 is arbitrary as long as it is plural, but it is preferably evenly spaced from the viewpoint of balance during rotation. In this embodiment, eight weights 340 are used as an example. Therefore, eight convex portions 321 and eight concave portions 322 are also provided. That is, the recesses 322 are equidistant from each other and equidistant from the rotation center of the weight holder 320 with the sun gear.

In the present embodiment, each weight 340 is provided with a protrusion 341 on the base 70 side. The protrusion 341 makes it possible to reduce the resistance at the time of contact with the base 70. The number of protrusions 341 is arbitrary, but in the present embodiment, four protrusions 341 are provided as an example.

Further, by providing a groove in the base 70 instead of providing the protrusion 341 in each weight 340, it is possible to reduce the resistance between the weight 340 and the base 70. For example, as shown in FIG. 4, a groove 709 (ring-shaped hatched portion in FIG. 4) having a height lower than the periphery is provided at the bottom of the base 70. Then, the weight 340 is arranged on it. At this time, even if the weight 340 is not provided with the protrusion 341, the groove 709 is provided in the base 70, so that the contact area between the weight 340 and the base 70 is reduced, and the resistance between the weight 340 and the base 70 is reduced. It becomes possible to do.

The weight 340 moves in a direction away from the center of the internal gear 261 due to centrifugal force during rotation caused by the pinion gear 50, and abuts on the inner peripheral wall of the case 10A to provide resistance as a centrifugal brake to rotation. It is to be given. Therefore, the inner peripheral wall of the case 10A, the weight holder 320 with the sun gear, and the weight 340 can act as a resistance imparting portion.

Since the weight 340 according to the present embodiment is configured separately from the weight holder 320 with the sun gear, it is not always necessary that the number of recesses 322 and the weight 340 in the weight holder 320 with the sun gear match. That is, although the number of recesses 322 in the weight holder 320 with sun gears is eight in this embodiment, it is not necessary to place weights 340 in all eight recesses 322, and the number of recesses 322 changes depending on the product, use, and aging. The number of weights 340 can be adjusted according to the desired braking force. Further, since it is configured to be removable, the braking force can be adjusted by changing the type of the weight 340 (including the material / material, size, friction coefficient, etc.). For example, if attention is paid to the material of the weight 340, for example, the weight 340 may be made of lead or resin. The braking force can be adjusted by arbitrarily selecting and combining these. However, this is just an example and is not limited to this. Focusing on the size of the weight 340, the normal size weight 340 shown in FIG. 25 (a) (displayed as the weight 340a for convenience for comparison) and the normal half shown in FIG. 25 (b). A size weight of 340b may be used. The braking force can be adjusted by arbitrarily selecting and combining these. In this example, the weight 340b is formed so as to occupy half of the area outward in the radial direction from the weight 340a, and there is no wasteful movement in the region of the recess 322 in the weight holder 320 with a sun gear when used. It has become. Of course, the present invention is not limited to this, and although not shown, the weights 340 may be formed so as to occupy half of the area inside in the radial direction, or weights 340 having three or more kinds of sizes may be prepared. Further, one weight 340 may not be configured to be mounted on one recess 322, and a plurality of weights 340 may be mounted on one recess 322.

An example is shown in FIGS. 20 (a) to 20 (d) and FIG. 26. FIG. 26 is an example of a weight holder 320a capable of holding only one weight, and the weight 340 is placed on the weight holder 320a. When such a weight holder 320a is used, the braking force cannot be adjusted by the number of weights 340. On the other hand, FIGS. 20 (a) to 20 (d) show cases where the number of the weight holder 320 with a sun gear and the weight 340 placed in the recess 322 according to the present embodiment is changed, that is, two or three. The case where the number is 4 or 8 is shown. In any case, since the recesses 322 are equidistant from each other and equidistant from the rotation center of the weight holder 320 with the sun gear, the weight holder 320 with the sun gear is equidistant from the viewpoint of balance during rotation. It is possible to place it in. It should also be noted that, as shown in the figure, the recess 322 has substantially the same shape as the weight 340. In this example, the recess 322 has a substantially trapezoidal shape or a substantially partial annulus shape in accordance with the weight 340.

That is, a method for manufacturing a shielding device is realized, which comprises changing the number or type of weights 340 depending on the shielding device when the braking device 1000 is provided for the shielding device including the shielding device 100.

When assembling the braking device 1000, the carrier 260 with internal teeth and the weight holder 320 with sun gears are assembled via the plate 300. Specifically, the cylindrical portion 264 of the carrier with internal teeth 260 is assembled so as to be inserted into the ring portion 324 of the weight holder 320 with sun gears. Therefore, the diameter of the cylindrical portion 264 is designed to be slightly smaller than the diameter of the ring portion 324.

Here, the plate 300 has a function of preventing the planetary gear 280 from tilting and preventing interference between the planetary gear 280 and the weight 340. The plate 300 has a ring shape and is placed on the upper surface of the weight holder 320 with a sun gear according to the convex portion 321. Further, the upper surface of the plate 300 is substantially in contact (or spaced) with the lower surface of the planetary gear 280, particularly the surface defined by being surrounded by the step 281 in the present embodiment (an example of the "contact surface" in the claims). Is about 0 mm). The weight 340 is preferably formed as thin as possible in order to reduce the thickness of the entire braking device 1000. In particular, the thickness of the plate is preferably 0.01 to 0.2 mm, more preferably 0.05 to 0.15 mm. Also 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.11, 0.12,0 It may be between any two numerical values of .13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20 mm. Further, the plate 300 is preferably made of metal because it is formed thin, but if technically possible, the plate 300 may be formed of a resin. In this case, it may be integrally formed with the sun gear 323. That is, the plate 300 is provided so as to separate the motion conversion portion and the resistance imparting portion.

1-2-7 <Base 70>
Next, the base 70 will be described with reference to FIGS. 2, 3, 6 (b) and 16. As shown in FIGS. 2 and 3, a columnar portion 708 that is bulkier than the surroundings and has a concave lower side is provided at substantially the center of the base 70. Then, as shown in FIGS. 2 and 6B, a first base groove 706, a first guide wall 706A, a second base groove 707, and a second guide wall 707A are provided on the upper surface of the cylindrical portion 708.

The first base groove 706 and the first guide wall 706A correspond to the first top wall groove 16 and the first guide wall 16A provided in the case 10A, respectively. Then, the lower end of the shaft core 31 inserts the first base groove 706 and comes into contact with the first guide wall 706A formed on the edge thereof. Similarly, the second base groove 707 and the second guide wall 707A correspond to the second top wall groove 17 and the second guide wall 17A provided in the case 10A, respectively. Then, the lower end of the shaft core 41 inserts the second base groove 707 and comes into contact with the second guide wall 707A formed on the edge thereof.

Although the columnar portion 708 is not essential, the lower end of the shaft core 31 and the shaft core 41 can be set as a mounting surface on which the braking device 1000 is mounted by providing a columnar portion 708 or the like to dent the lower side. It is possible to prevent contact with each other and appropriately insert the shaft core 31 and the lower ends of the shaft core 41.

Further, the base 70 is provided with two first engaging plate portions 701A at both ends of the left and right side surfaces. Then, two second engaging plate portions 701B are provided at both ends of the front side surface, and one second engaging plate portion 701B is provided at substantially the center of the rear side surface. The first engaging plate portion 701A engages with the first engaging groove 111A provided in the case 10A. Further, the second engaging plate portion 701B engages with the second engaging groove 111B provided in the case 10A. As a result, the case 10A and the base 70 are engaged with each other to form a housing.

Further, as shown in FIGS. 3, 6 (b), 16 and the like, on the outside of the bottom surface of the base 70, a mounting cylinder 702 used when arranging the braking device 1000 in the head box of the shielding device is provided. It will be provided. For example, by fitting the mounting cylinder 702 into a member such as a shaft provided in the head box, the braking device 1000 can be stably arranged in the head box.

1-3 <Assembly configuration>
Next, the state in which each of these members is assembled will be described with reference to FIGS. 5 to 9. FIG. 5 is an assembly drawing of a braking device 1000 configured by combining these members. As shown in FIG. 5, the appearance of the braking device 1000 includes a housing to which the case 10A and the base 70 are connected, and an alignment member 200 arranged so as to cover the case 10A from above. As shown in FIGS. 2 and 3, such assembly is performed in a state where the central axes of the members are overlapped in the vertical direction. Specifically, the carrier 260 with internal teeth and the weight holder 320 with a sun gear holding the weight 340 are assembled via the plate 300. At this time, the planetary gear 280 provided on the carrier 260 with internal teeth and the sun gear 323 provided on the weight holder 320 with sun gears are made to mesh with each other.

Then, the axis 31 is slid to the first top wall groove 226 and the first bottom wall groove 228 of the slider 220 while moving in the horizontal direction. At this time, the knurl 240 is located inside the slider 220, and the pinion gear 50 is located outside the slider 220. Further, the shaft core 41 is slid into the second top wall groove 227 and the second bottom wall groove 229 while being moved in the horizontal direction. At this time, the roller portion 42 is positioned inside the slider 220. Then, the slider 220 and the carrier with internal teeth 260 are moved relative to each other so that the internal gear 261 and the pinion gear 50 provided on the carrier with internal teeth 260 mesh with each other.

After that, the base 70 is arranged under these members, and the case 10A is covered from above so that the protrusion 230 of the slider 220 passes through the groove 118 of the case 10A as shown in FIG. At this time, it is confirmed that the coil spring SP provided on the slider 220 comes into contact with the inner peripheral wall of the case 10A, the slider 220 is urged forward, and the protrusion 230 does not fall out of the support groove 114. Then, the first side wall hole 119A and the second side wall hole 119B provided in the case 10A and the first engaging plate portion 701A and the second engaging plate portion 701B provided in the base 70 are engaged with each other, and the case 10A and the base are engaged with each other. Fix 70.

Finally, the alignment member 200 is covered from above the housing composed of the case 10A and the base 70. Then, the claw portion 209 provided in the alignment member 200 is engaged with the engagement hole 19 provided in the case 10A, and the alignment member 200 and the case 10A are fixed.

The braking device 1000 thus assembled is shown in FIG. Then, when the assembly of the braking device 1000 is completed, the first cord CD is arranged so as to be outside the front wall portion 205 of the alignment member 200 and above the first front groove 201. Then, the second cord CD is inserted into the first front groove 201 via the first front cord insertion portion 201A of the alignment member 200. Then, the third cord CD is inserted into the second front groove 202 via the second front cord insertion portion 202A.

Then, these cord CDs are passed through the guide grooves 113 provided in the front and rear of the case 10A and the through holes 225 provided in the front and back of the slider 220.

Then, among the cord CDs, the first cord CD is passed so as to be located on the outside of the rear wall portion 206 of the alignment member 200 and above the first rear groove 203. Then, the second cord CD is passed to the outside from the first rear groove 203 via the first rear cord insertion portion 203A provided on the rear wall portion 206 of the alignment member 200. Then, the third cord CD is passed to the outside from the second rear groove 204 via the second rear cord insertion portion 204A. As a result, the state shown in FIGS. 5A and 5B is obtained.

FIG. 5C is a left side view of the braking device 1000, that is, a side view seen from the arrow X direction of FIG. 5A. As shown in FIG. 5C, in the braking device 1000, the case 10A, the alignment member 200, and the base 70 are visually recognized from above in the side view. Further, it can be seen that the protrusion 230 is supported by the support groove 114.

As shown in FIG. 6A, the braking device 1000 can be visually recognized in the order of the case 10A, the alignment member 200, and a part of the base 70 in the plan view thereof. Here, as shown in FIGS. 5 (a) and 5 (b) and FIG. 6 (a), the upper end of the shaft core 31 is provided in the case 10A from the first top wall groove 226 provided in the slider 220. The first top wall groove 16 is inserted and exposed to the outside of the case 10A. Similarly, the upper end of the shaft core 41 is exposed to the outside of the case 10A by inserting the second top wall groove 17 provided in the case 10A from the second top wall groove 227 provided in the slider 220.

Then, the first guide wall 16A provided on the edge of the first top wall groove 16 comes into contact with the shaft core 31, and the second guide wall 17A provided on the edge of the second top wall groove 17 hits the shaft core 41. I'm in contact.

Further, as shown in FIG. 6B, in the bottom view of the base 70, the lower end of the shaft core 31 inserted through the first base groove 706 and the shaft core 41 inserted through the second base groove 707. You can see the bottom edge of. In addition, on the surface where the mounting cylinder 702 is provided, the top of the cylindrical portion 708 may be covered with a surface so that the shaft core 31 and the lower ends of the shaft core 41 are covered from the outside.

1-3-2 <Internal structure in assembled state>
Next, the internal structure in the assembled state will be described with reference to FIGS. 7 to 9. FIG. 7 is a perspective view in a state where the alignment member 200 and the case 10A are removed from the state of FIG. As shown in FIG. 7, the shaft core 31 and the shaft core 41 project above the slider 220. Further, the movement of the shaft core 31 is restricted in the width direction of the slider 220 in the first top wall groove 226. Similarly, the movement of the shaft core 41 is restricted in the width direction of the slider 220 in the second top wall groove 227. The code CDs (not shown) are inserted in the front-rear direction of the slider 220 in a state of being vertically aligned in the through holes 225 of the slider 220.

FIG. 8 is a perspective view showing a state in which the slider 220 is further removed from the state of FIG. 7. The code CD (not shown) is inserted in front of and behind the braking device 1000 in a state of being sandwiched between the knurl 240 and the roller portion 42. Further, the pinion gear 50 and the internal gear 261 are in mesh with each other. Therefore, when tension is applied to the cord CD, a frictional force is generated between the cord CD and the knurl 240, and when the pinion gear 50 rotates integrally with the knurl 240, the rotation of the pinion gear 50 is an internal gear. It is transmitted to 261. As a result, the internal gear 261 rotates on its axis, so that the carrier with internal teeth 260 and the support shaft 263 provided on the flange 262 also revolve. Along with this, the planetary gear 280 rotatably supported by the support shaft 263 starts revolving while rotating.

FIG. 9 is a perspective view showing a state in which the carrier 260 with internal teeth is further removed from the state of FIG. As shown in FIG. 9, the planetary gear 280 and the sun gear 323 are in mesh with each other. Therefore, the rotation of the planetary gear 280 is transmitted to the sun gear 323, and the weight holder 320 with the sun gear starts to rotate. As a result, as shown in FIG. 16, the weight 340 held in the recess 322 of the weight holder 320 with the sun gear starts to rotate. Then, when the rotation speed exceeds a certain value, the weight 340 comes into contact with the inner wall of the case 10A due to centrifugal force. This gives resistance to the rotation of the knurl 240.

Next, the relative positions between the members in the assembled state will be described in more detail with reference to FIGS. 17 and 18. FIG. 17 is a cross-sectional view taken along the line AA of FIG. 5 (c). As shown in FIG. 17, the pinion gear 50 centered on the shaft core 31 and the internal gear 261 provided on the carrier with internal teeth 260 are meshed with each other. Further, the rotation of the internal gear 261 is configured to be transmitted to the planetary gear 280 via the support shaft 263 of the carrier 260 with internal teeth. Then, the planetary gear 280 meshes with the sun gear 323 provided on the weight holder 320 with the sun gear and the inner peripheral gear 115 provided inside the case 10A. Therefore, due to the rotation caused by the pinion gear 50, the planetary gear 280 revolves around the center of the internal gear 261 in the space formed between the sun gear 323 and the inner peripheral gear 115. It will be possible.

FIG. 18 is a cross-sectional view taken along the line BB of FIG. 6A. As shown in FIG. 18, in the present embodiment, the cross-sectional view of the cut portion along the BB line is substantially symmetrical with respect to the mounting cylinder 702. The shaft core 31 and the shaft core 41 project from the upper end of the case 10A and the lower end of the base 70. In this embodiment, the upper ends of the first guide wall 16A and the second guide wall 17A are substantially the same height as the upper ends of the shaft core 31 and the shaft core 41, respectively.

The knurl 240 and the roller portion 42 are located inside the slider 220. Further, the pinion gear 50 is located outside the slider 220 with the slider 220 sandwiched between the knurled 240 and the knurl 240. Further, the pinion gear 50 and the internal gear 261 are in mesh with each other.

Then, from the upper side of the case 10A to the flange portion 13, the alignment member 200 is covered. Further, the case 10A is engaged with the base 70 at the lower end thereof. A weight 340 is held on the upper part of the base 70. Here, in the present embodiment, since the weight 340 is detachable, the required braking force can be adjusted according to the number or type of the weight 340. That is, when a large braking force is required, the number of weights 340 may be increased, or other higher density weights may be held in the weight holder 320 with sun gears. On the other hand, if a small braking force is sufficient, the number of weights 340 may be reduced. From the viewpoint of stability during rotation, the weight 340 is preferably arranged symmetrically on a surface held by the weight holder 320 with a sun gear. In this embodiment, the protrusion 341 provided on the weight 340 and the bottom surface of the base 70 come into contact with each other to reduce the resistance between the weight 340 and the base 70 during rotation.

1-4 <Operation>
Next, the operation of the braking device 1000 according to the present embodiment will be described with reference to FIG. FIG. 19A shows a state in which no tension is applied to the cord CD (steady state), and FIG. 19B shows a state in which tension is applied to the cord CD and the cord CD is sandwiched between the knurl 240 and the roller portion 42. (Pinched state), FIG. 19 (c) is a diagram summarizing the rotation directions of each member when the state changes from FIG. 19 (a) to FIG. 19 (b). Note that both FIGS. 19 (a) and 19 (b) are cross-sectional views taken along the line AA of FIG. 5 (c), as in FIG. Here, for convenience of explanation, the outer circumference of the roller portion 42, which does not appear in the cross-sectional view, is displayed so as to be superimposed on the periphery of the shaft core 41, and the outer circumference of the knurl 240 is displayed so as to be superimposed on the periphery of the shaft core 31. Although the outer circumference of the knurl 240 is not strictly circular, it is shown in an approximate circular shape for the sake of simplicity of explanation.

As shown in FIG. 19A, in a steady state, as described above, the coil spring SP abuts on the inner wall behind the case 10A and presses the slider 220 forward. Therefore, the slider 220 is located in front of the case 10A. Therefore, the position is restricted by the shaft core 31 whose position is regulated by the first top wall groove 226 and the first bottom wall groove 228 of the slider 220, and by the second top wall groove 227 and the second bottom wall groove 229. The existing shaft core 41 and the shaft core 41 move forward together with the slider 220. Further, the first top wall groove 16 and the second top wall groove 17 provided in the case 10A held on the upper part of the slider 220 become smaller in distance from each other toward the front. Similarly, the distance between the first base groove 706 and the second base groove 707 provided in the base 70 decreases toward the front. Therefore, the distance between the roller portion 42 rotatably supported by the shaft core 41 and the knurl 240 rotatably supported by the shaft core 31 is also reduced. That is, the first top wall groove 16 and the first base groove 706 function as a regulating groove that regulates that the shaft core 31 of the knurl 240 is movably fitted and the knurl 240 does not move along the groove. Similarly, the second top wall groove 17 and the second base groove 707 serve as a regulating groove that regulates that the shaft core 41 of the roller portion 42 is movably fitted and the roller portion 42 does not move along the groove. Function. Further, since the first top wall groove 16 and the first base groove 706 are formed concentrically with the center point of the inner peripheral surface of the carrier with internal teeth 260 in a plan view, the shaft core 31 moves in each groove. Nevertheless, the pinion gear 50 can continue to mesh with the internal gear 261 provided on the carrier 260 with internal teeth.

As described above, when the distance between the knurl 240 and the roller portion 42 becomes smaller, the knurl 240 is pressed by the roller portion 42, and the code CD is narrowed between the knurl 240 and the roller portion 42. That is, in the present embodiment, the coil spring SP also functions as an urging member that constantly urges the knurl 240 so that the knurl 240 is pressed against the roller portion 42.

Then, it is assumed that tension is applied to the code CD in the direction (forward) of the arrow D1 in the braking device 1000 in the steady state. Then, the knurl 240 rotates counterclockwise and the roller portion 42 rotates clockwise due to the frictional force generated between the cord CD and the cord CD. Then, due to the rotation of the knurl 240, the pinion gear 50 that shares and is fixed to the same axis 31 also rotates (rotates) in the same direction (counterclockwise) as the knurl 240. At this time, as shown in FIG. 19B, the shaft core 31 and the shaft core 41 move forward in a plan view, are close to each other in the left-right direction, and sandwich the cord CD by the knurl 240 and the roller portion 42. The force of attachment becomes stronger, and the knurl 240 reliably rotates as the code CD moves. Then, since the pinion gear 50 meshes with the internal gear 261, the internal gear 261 rotates (rotates) counterclockwise due to the force applied from the teeth of the pinion gear 50. As a result, the carrier 260 with internal teeth also rotates (rotates) counterclockwise together with the internal gear 261. Therefore, the planetary gear 280 provided on the carrier 260 with internal teeth also rotates counterclockwise (revolves). Here, since the planetary gear 280 meshes with the sun gear 323 and the inner peripheral gear 115 fixed by the case 10A, it revolves counterclockwise while rotating in the direction opposite to the revolution direction (clockwise). Will be done. Therefore, the sun gear 323 meshing with the planetary gear 280 inside the planetary gear 280 rotates (rotates) in the opposite direction (counterclockwise) to the rotation of the planetary gear 280. At this time, the planetary gear 280 accelerates the rotation of the sun gear 323. As a result, the weight 340 held by the weight holder 320 with the sun gear that rotates together with the sun gear 323 also starts to rotate. As already described, the inner peripheral gear 115 that meshes with the planetary gear 280 on the outside of the planetary gear 280 does not rotate even when the planetary gear 280 rotates because the case 10A and the base 70 are fixed.

Then, as shown in FIG. 19B, when the knurl 240 and the roller portion 42 approach the limit (sandwiched state), the knurl 240 continues to rotate but stops moving along the internal gear 261 of the knurl 240. .. At this time, the rotation of the other members due to the rotation of the knurl 240 is continued. Then, the weight 340 comes into contact with the inner peripheral wall of the case 10A due to the centrifugal force, so that a resistance force is generated against rotation. That is, as the moving speed of the code CD increases, the rotation speed increases, which increases the centrifugal force. Then, as the centrifugal force increases, the weight 340 comes into contact with the inner peripheral wall of the case 10A more strongly, and the resistance force increases. As a result, the moving speed of the code CD (falling speed of the solar shielding member) can be suppressed. Here, when the tension applied to the cord CD is substantially constant (for example, when the solar shielding member suspended up and down on the cord CD on the front side of the braking device 1000 freely falls), the tension is added to the cord CD. The moving speed of the cord CD becomes substantially constant where the tension applied, the weight 340, and the resistance force due to the inner peripheral wall of the case 10A are balanced. Therefore, the braking device 1000 functions as a rotary damper for the movement of the cord CD, and the solar shielding member can be slowly lowered.

FIG. 19 summarizes the rotation direction of each member (for the pinion gear 50, the front-rear direction and the tightening direction in a plan view) for the change of the pinching state from the steady state to the pinching state described above. (C).

On the other hand, when tension is applied to the cord CD in the direction opposite to the arrow D1 (rearward), the knurl 240 and the roller portion 42 rotate in the opposite direction to the above. As a result, the shaft core 31 and the shaft core 41 move along the first top wall groove 16 and the second top wall groove 17 so as to be separated from each other. Then, the pinching force of the knurl 240 with respect to the cord CD is weakened, and the cord CD can be pulled with a weak force. Therefore, when the braking device 1000 is provided in the head box, in FIG. 19, the direction in which tension is applied to the cord CD in the front is the direction in which the solar radiation shielding member is lowered, and the direction in which tension is applied to the cord CD in the rear is the direction in which the solar radiation shielding member is applied. It is preferable to use the rising direction of.

As described above, in the braking device 1000 according to the present embodiment, the cord is sandwiched by the sandwiching body when the cord and the sandwiching body move relative to each other, and the cord is not bent when the cord and the sandwiching body move relative to each other. It can be said that it is a braking device configured to change the pinched state so that it is released in the state. Here, the release of the cord is a state in which the cord is allowed to move, regardless of whether the cord and the sandwiching body are in contact with each other or not.

<Action / effect>
With the braking device 1000 according to the present embodiment, the following actions and effects can be obtained.
(1) Since the cord CD does not bend (non-bend) during free movement, the bending resistance becomes small and the cord CD can move more smoothly.
(2) The operating force can be reduced during the pulling operation, the cord CD can be reliably sandwiched during the automatic operation (automatic descent), and an unintended fall can be prevented.
(3) When tension is applied to the cord CD forward, the knurl 240 and the roller portion 42 move so as to be close to each other, so that the cord CD can be strongly sandwiched and the knurl 240 can be reliably rotated. And the rotation can be transmitted to the pinion gear 50.
(4) When tension can be applied to the cord CD backward, the knurl 240 and the roller portion 42 move so as to be separated from each other to weaken the pinching force to the cord CD and allow the cord CD to move freely. can do.
(5) The regulation groove provided in the housing (case 10A and base 70) can prevent the knurl 240 and the roller portion 42 from moving in an unintended direction.
(6) By holding the slider 220 in a floating state, the resistance force can be reduced and the wear of the member can be suppressed.
(7) Friction resistance can be reduced by providing the corrugated portion 116 and the step 117 inside the case 10A.
(8) The resistance force can be reduced by the protrusion 341 provided on the weight 340.
(9) The plate 300 can prevent the planetary gear 280 from tilting and prevent the planetary gear 280 from interfering with the weight 340.
(10) The braking device 1000 can be downsized by making the plate 300 thin while preventing the above interference.
(11) The first guide wall 16A and the second guide wall 17A make it possible to prevent the case 10A from being scraped by the pressure from the shaft core 31 and the shaft core 41.
(12) By providing the step 51 in the pinion gear 50, the sliding resistance between the pinion gear 50 and the slider 220 can be reduced.
(13) Since the weight 340 is removable, the required braking force can be adjusted according to the number or type of the weight 340.
(14) By arranging the mechanism related to the motion conversion unit and the mechanism related to the resistance applying unit so as to be positioned substantially vertically, it is possible to reduce the area of the entire braking device 1000 in a plan view.

2. 2. Modification Example The shielding device 100 according to the present invention can also be carried out in the following aspects.

The shielding device 100 of the present invention may have a configuration different from that of the shielding device 100 of the above embodiment. For example, as shown in FIG. 21, the braking device 1000 may be fixed to the window frame 110 by using a screw 111 or the like. Further, the braking device 1000 may be provided inside the grip 109. Further, the braking device 1000 may be provided at an arbitrary place in the passage path of the elevating cord 102.

In the shielding device 100 according to the present embodiment, the braking device 1000 includes a weight holder 320 with a sun gear capable of holding eight weights 340, but the number is not limited to eight. The number is preferably 2 to 16, and more preferably 4 to 18. Moreover, it is preferable that the number is an even number.

In the above embodiment, the case 10A (upper case) and the base 70 (lower case) are engaged to form a housing, and such a configuration is used to obtain a desired braking force in the braking device 1000 or the control thereof. In order to adjust the power, the number of weights 340 placed on the weight holder 320 with sun gears can be changed. However, the present invention is not limited to this, and as shown in FIGS. 21 (a) and 21 (b), the braking device 2000 according to the modified example has, for example, a part of both fixed by the hinge mechanism 10Bc and has a weight of 340 or the like. It may be composed of the lower case 10Bb which is the accommodating means for accommodating and the upper case 10Ba which is the lid means for shielding the lower case 10Bb. That is, as shown in FIGS. 22 (a) and 22 (b), the upper case 10Ba as the lid means can be opened and closed from the lower case 10Bb as the accommodating means. In any case, the number of weights 340 placed on the weight holder 320 with the sun gear can be changed in order to obtain the desired braking force in the braking device 2000 or to adjust the braking force.

In the above-described embodiment, the weight holder 320 with a sun gear has eight recesses 322 (an example of a "mounting portion" in the claims) on which the weight 340 can be placed, but the number thereof is such a number. Not limited. For example, in the braking device 3000 according to the modification shown in FIG. 23, the weight holder 320b includes four mounting portions 322b on which the weight 340 can be mounted. That is, up to four weights 340 can be placed, and even in such a case, the number of weights 340 can be changed.

In the above-described embodiment, the weight holder 320 with a sun gear is configured so that the weight 340 can be mounted, and the weight 340 functions as a rotation resistor that generates sliding resistance. Instead of this, a wind blade 340c that generates air resistance by rotating as shown in FIG. 24 may be adopted as the rotation resistor. In such a case, the wind blade 340c is configured to be detachably attached to the holder 320c. In the example shown in FIG. 24, the wind blade 340c is held by the wind blade support portion 321c extending radially outward related to the rotation of the holder 320c. Specifically, as shown in FIG. 24, the windbreak blade 340c is provided with an engaging groove 340e, and the windbreak blade support portion 321c is provided with an engaging groove 321e. That is, the two engaging grooves 321e and 340e are engaged with each other by sliding the wind blade 340c onto the wind blade support portion 321c. However, this is just an example and is not limited to this. Since the wind blade 340c has a resistance generation surface 340d that is wider in the height direction than the wind blade support portion 321c, it generates a large air resistance as compared with the case where the wind blade 340c is not held during rotation. be able to. In FIG. 24, the resistance generation surface 340d is shown as a rectangle, but the present invention is not limited to this, and for example, a trapezoid or a square may be adopted.

As described above, according to the present invention, a braking device capable of appropriately applying a braking force to the cord, a motion conversion unit, and a shielding device using the braking device are provided, and are used in the fields of daily necessities and the like. can do.

10A: Case 10Ba: Upper case 10Bb: Lower case 10Bc: Hinge mechanism 11: Top wall part 12b: Rear side wall part 12f: Front side wall part 12l: Left side wall part 12r: Right side wall part 13: Gear part 13C: Cylindrical part 13L: Cylindrical part 16: First top wall groove 16A: First guide wall 17: Second top wall groove 17A: Second guide wall 19: Engagement hole 31: Shaft core 40: Idle roller 41: Shaft core 42: Roller part 50 : Pinion gear 51: Step 70: Base 100: Shielding device 101: Solar shielding member 102: Elevating code 102c: Elevating code 102l: Elevating code 102r: Elevating code 104: Lock part 108: Operation rod 109: Grip 110: Window frame 111 : Screw 111A: First engaging groove 111B: Second engaging groove 112: Cover portion 113: Guide groove 114: Support groove 115: Inner peripheral gear 116: Corrugated portion 117: Step 118: Groove 119A: First side wall hole 119B : Second side wall hole 120: Operation unit 121: Cord equalizer 122: Bottom rail 123: Ladder code 124: Shaft 130: Head box 131: Top surface 132: Bottom surface 133: Side surface 134: Box cap 135: Cord outlet 136: Mounting recess 200 : Alignment member 201: First front groove 201A: First front cord insertion portion 202: Second front groove 202A: Second front cord insertion portion 203: First rear groove 203A: First rear cord insertion portion 204: Second rear Groove 204A: Second rear cord insertion part 205: Front wall part 206: Rear wall part 207: Right side wall part 208: Left side wall part 209: Claw part 210: Step 220: Slider 221: Top wall part 222: Rear side wall part 223 : Bottom wall part 224: Front side wall part 225: Through hole 226: First top wall groove 227: Second top wall groove 228: First bottom wall groove 229: Second bottom wall groove 230: Protrusion 231: Recessed 240: Laurette 241 ： Washer 260 ： Carrier with internal gear 261 ： Internal gear 262 ： Flange 263 ： Support shaft 264 ： Cylindrical part 280 ： Planetary gear 281 ： Step 300 ： Plate 320 ： Sun gear with weight holder 320a ： Weight holder 320b ： Weight holder 320c : Holder 321: Convex portion 321c: Wind blade support portion 321e: Engagement groove 322: Recessed portion 322b: Mounting portion 323: Sun gear 324: Ring Part 340: Weight 340a: Weight 340c: Wind blade 340d: Resistance generation surface 340e: Engagement groove 341: Protrusion 701A: First engagement plate part 701B: Second engagement plate part 702: Mounting cylinder 706: First base groove 706A: 1st guide wall 707: 2nd base groove 707A: 2nd guide wall 708: Cylindrical part 709: Groove 1000: Braking device 2000: Braking device 3000: Braking device CD: Code SP: Coil spring

Claims (18)

A shielding device that is configured to move the shielding material by pulling a tension cord.
It is provided with a braking device that generates resistance to the input applied by the tension cord that is driven by the movement of the shielding material and applies the resistance to the tension cord by the reaction thereof.
The braking device includes a rotation resistor, a case, and a rotation resistor holder that detachably holds the rotation resistor in the case, and the rotation resistor is rotated as the rotation resistor holder rotates. It is configured to revolve, and a resistance force is generated by rotating the rotational resistor, so that the number or type of the rotational resistor can be changed .
The case includes a lower case for accommodating the rotation resistor and the rotation resistor holder, and an upper case for shielding the lower case .
Cloaking device. The shielding device according to claim 1, wherein the braking device is detachably housed in a head box. The shielding device according to claim 1 or 2 , wherein the upper case is detachably configured from the lower case. The shielding device according to claim 3 , wherein the upper case is detachably configured from the lower case by screwing or a snap-fit mechanism. The shielding device according to claim 1 or 2 , wherein the lower case can be opened and closed. The shielding device according to any one of claims 1 to 5 , wherein the rotation resistor holder includes a mounting portion on which the rotation resistor is mounted. The rotation resistor holder further includes a contact portion that comes into contact with the side surface of the rotation resistor during the rotation, and the rotation resistor is pressed against the contact portion by the rotation of the rotation resistor holder. As a result, it revolves and moves to the outer peripheral side of the revolution due to its centrifugal force, and a braking force is generated by friction with the inner wall of the case, which can be adjusted according to the number or type of the rotational resistors. The shielding device according to claim 6 , which is configured in 1. The shielding device according to claim 6 or 7, wherein there are a plurality of the above-mentioned mounting portions, and one rotation resistor can be mounted on one mounting portion. There are a plurality of the above-mentioned placement portions, which are arranged on the circumference related to the revolution of the rotation resistor, each of which is equidistant in the circumferential direction and equidistant from the rotation center of the rotation resistor holder. The shielding device according to any one of claims 6 to 8. The shielding device according to any one of claims 6 to 9 , wherein the number of the above-mentioned placing portions is 2 to 16. The shielding device according to claim 10 , wherein the number of the above-mentioned placing portions is four. The shielding device according to claim 10 , wherein the number of the above-mentioned placing portions is eight. The shielding device according to any one of claims 6 to 12 , wherein the above-mentioned placing portion has substantially the same shape as the rotation resistor. The shielding device according to any one of claims 6 to 13 , wherein the number of the rotation resistors mounted on the above-mentioned mounting portion is 2 to 16. 6 . The shielding device according to one. The shielding device according to any one of claims 1 to 15 , wherein the shielding device is a blind device. For shielding devices that are configured to move the shielding material by pulling a tension cord
A braking device that generates resistance to the input applied by the tension cord that is driven by the movement of the shielding material and applies the resistance to the tension cord by the reaction thereof , and is a rotational resistor, a case, and the case. A rotary resistor holder that detachably holds the rotary resistor is provided inside, and the case includes a lower case that houses the rotary resistor and the rotary resistor holder, and an upper case that shields the lower case. When providing a braking device configured to revolve the rotational resistor with the rotation of the rotational resistor holder and to generate a resistance force by rotating the rotational resistor. To,
A method for manufacturing a shielding device, characterized in that the number or type of the rotating resistors is changed by a shielding device by attaching / detaching the rotating resistors from the rotating resistor holder. The method for manufacturing a shielding device according to claim 17 , wherein the shielding device is a blind device.

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