JP2018194226A - Damper device - Google Patents

Abstract

To provide a damper device a turning space of a blade plate of which is hardly influenced by an opening area of the damper device, and which is movable even in a small space, has excellent space properties and can prevent infiltration of water into the device.SOLUTION: A damper device includes a driving source, a plurality of blade plates, a frame body and a power transmission mechanism. The frame has a pair of opening parts. The plurality of blade plates are arranged side by side in parallel in a flowing passage part 10a. The power transmission mechanism includes a power transmission member 55 into which an output axis part 55s is inserted into the flow passage part through a through hole 16a. The output axis part includes a tip end part 55d inserted into the flow passage part, a large-diameter part 55f having a diameter larger than that of the tip end part, and an expanded-diameter part 55e. A shape of a surface opposite to the output axis part of a stopper part is formed into such a shape as to support the outer peripheral surface of the tip end part, contact with the expanded-diameter part and cover a part on the side of the tip end part of the large-diameter part.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a damper device.

  The following Patent Document 1 discloses a refrigerator provided with a damper device that controls a flow path of cool air circulating in the warehouse.

JP 2009-002545 A

  The damper device of Patent Document 1 includes a single baffle, and rotates this to connect or block the cool air flow path. Therefore, in the damper device of Patent Document 1, the rotation space of the baffle increases in proportion to the opening area, and securing the rotation space of the baffle becomes a problem when providing a large opening area. For example, when the condensed water staying at the bottom freezes, the accumulation of the condensed water may hinder the opening and closing operation of the slats. Moreover, in the damper apparatus used in the environment where water may adhere like the damper apparatus of the said patent document 1, it is necessary to provide the structure which prevents the penetration | invasion of the water into an apparatus.

  In view of the above problems, the problem to be solved by the present invention is that the rotation space of the slats is less influenced by the opening area of the damper device, can be operated in a narrow space, has excellent space characteristics, and enters the device. An object of the present invention is to provide a damper device that can prevent water from entering.

  In order to solve the above problems, a damper device according to the present invention includes a drive source, a plurality of blades, a frame that rotatably supports the blades, and a driving force of the drive source. And a power transmission mechanism that rotates each of the slats, and the frame body has a pair of openings that are a fluid inlet and outlet, and the frame When the hollow portion communicating with the pair of openings in the body is used as the flow path portion of the frame body, the plurality of blades are arranged in parallel in the flow path portion, and the power transmission mechanism Includes a power transmission member in which an output shaft portion is inserted into the flow passage portion from a through hole formed in the frame body, and the output shaft portion includes a tip portion inserted into the flow passage portion, and A large-diameter portion having a diameter larger than the tip portion, and the protrusion from the tip portion toward the large-diameter portion. A diameter-enlarging part that enlarges the diameter of the shaft part, and the output shaft part is supported by a retaining part that is an edge part of the through hole, and the output shaft part of the retaining part The shape of the facing surface supports the outer peripheral surface of the distal end portion, and can contact at least a part of the enlarged diameter portion in the axial direction of the output shaft portion, and the distal end side of the large diameter portion It is formed in the shape which covers a part of.

  By dividing the wing plate that opens and closes the fluid flow path into a plurality of pieces, even when the opening area of the damper device is increased, it is possible to suppress an increase in the rotation space of the wing plate. As a result, the damper device of the present invention can easily secure the space for rotating the slats and can be installed in a narrower space.

  In addition, the shape of the surface of the retaining portion facing the output shaft portion supports the outer peripheral surface of the tip portion, and can contact at least a part of the enlarged diameter portion in the axial direction of the output shaft portion. By forming in the shape which covers a part by the side of the front-end | tip part, the infiltration path | route of the water from a front-end | tip part becomes long, and the difficulty that water reaches | attains in an apparatus can be improved.

  Moreover, it is preferable that the lubricant is filled between the output shaft portion and the retaining portion.

  By filling the lubricant between the output shaft portion and the retaining portion, it is possible to prevent water from entering through these gaps. In addition, the shape of the surface of the retaining portion facing the output shaft portion supports the outer peripheral surface of the tip portion, and can contact at least a part of the enlarged diameter portion in the axial direction of the output shaft portion. In this way, a bent portion is provided on the surface of the retaining portion that faces the output shaft portion. Thereby, the outflow of the lubricant due to the rotation of the output shaft portion is suppressed, and the waterproof effect by the lubricant can be kept long.

  Moreover, it is preferable that a gap larger than a clearance provided between the tip portion and the retaining portion is provided between the large diameter portion of the output shaft portion and the retaining portion.

  By providing a large gap between the large diameter portion of the output shaft portion and the retaining portion, more lubricant can be filled, and the waterproofing effect by the lubricant can be maintained for a long time. On the other hand, by reducing the clearance between the tip of the output shaft and the retaining part as much as possible, the positioning accuracy of the tip is increased and the water inlet into the device is narrowed and waterproof. The sex can be further enhanced.

  Further, the enlarged diameter portion is a stepped portion bent stepwise from the tip portion toward the large diameter portion, and a corner portion between the large diameter portion and the enlarged diameter portion is rounded into a curved surface. Preferably it is.

  The enlarged diameter portion is provided with a stepped portion that is bent stepwise from the distal end portion toward the large diameter portion. Then, by rounding the corner between the large-diameter portion and the enlarged-diameter portion into a curved surface, a gap where the corner cannot reach can be ensured between the corner and the stepped portion. Since the lubricant stored in the gap does not easily scatter and leak, the waterproof effect of the lubricant can be maintained for a longer time. Further, the output shaft portion can bend the water intrusion path for intruding into the apparatus from the tip portion by the enlarged diameter portion. Thereby, it can suppress that water permeates into the apparatus.

  Further, it is preferable that the power transmission mechanism has a link mechanism disposed in the flow path portion, and a swing range of the link mechanism is within the flow path portion.

  The link mechanism, which is a driving member for a plurality of slats, is configured so that the swinging operation is performed in the flow path portion of the frame body, and the mechanism is not protruded outside the frame body. The degree of freedom is increased.

  The power transmission mechanism includes a link mechanism disposed in the flow path portion, and the power transmission member is coupled to the link mechanism to transmit the driving force of the drive source to the link mechanism. It is a link driving member, and the frame has a plurality of blade support portions that are support portions of the blades, and the blade support portions and the retaining portions are connected to the frame body. It is preferable that they are integrally molded.

  Since the blade support part and the link driving member support part are integrally formed with the frame, the relative positional relationship between the blades and the link mechanism can be kept constant. Thereby, the influence on the positional accuracy of these members due to dimensional errors and assembly errors can be suppressed, and the smooth operation of the slats can be ensured.

  The power transmission mechanism includes a link mechanism disposed in the flow path portion, and the power transmission member is coupled to the link mechanism to transmit the driving force of the drive source to the link mechanism. A link drive member, wherein the link mechanism is connected to the link drive member when the dimension of each of the blades in the direction parallel to the rotation center line is the length of the blade board. And a second link member that connects the first link member and one end in the length direction of each of the slats.

  Since the link mechanism has the first link member and the second link member, the first link member serves as a drive link, the second link member serves as an intermediate link, the frame body serves as a fixed link, and each wing plate serves as a driven link 4 A knot link mechanism can be configured. Thereby, it becomes possible to synchronize the rotation operation of each slat with a simple structure.

  The power transmission mechanism includes a link mechanism disposed in the flow path portion, and the power transmission member is coupled to the link mechanism to transmit the driving force of the drive source to the link mechanism. A link driving member, wherein the link driving member includes a gear portion and the output shaft portion, and the driving force of the driving source is driven by the one or more gear members of the power transmission mechanism. The gear portion of the link driving member and the gear member are accommodated in a gear box that is a case body constituted by the frame body and a case member fitted to the frame body, The gear portion of the driving member or the gear member, and the gear box are in contact with each other when the link driving member is at a predetermined angular position, and stop the transmission of the driving force. It is preferred to have a path section.

  When the wing plate reaches its rotation limit angle, by blocking the transmission of the driving force with the power transmission member before the link mechanism, it is prevented that excessive stress is applied to the wing plate and the link mechanism, It is possible to suppress a decrease in the component life of the slats and the link mechanism.

  Further, the large diameter portion of the output shaft portion extends in the gear box, and the surface of the frame constituting the inner surface of the gear box has at least a part of the outer peripheral surface of the large diameter portion. It is preferable that a lubricant scattering prevention part which is a wall-like part covering the surface is formed.

  By providing the lubricant scattering prevention part, the lubricant applied around the output shaft part does not easily scatter and leak, but remains in the lubricant scattering prevention part, so that the lubricant flows into the gear box. This can be suppressed. Thereby, the waterproofing effect by a lubricant can be kept long. Further, even when water enters the gear box, the water can be kept within the range of the lubricant scattering prevention portion.

  Further, the gear portion and the gear box of the link driving member have a stopper portion that abuts against each other and interrupts transmission of the driving force when the link driving member is at a predetermined angular position. The stopper portion of the gear box is constituted by a raised portion protruding from a surface which becomes a bottom surface when the damper device is installed among the inner surfaces of the gear box, and the raised portion is provided with the through hole. Preferably, the lubricant is formed continuously from the surface of the frame, and the lubricant scattering prevention portion is formed integrally with the raised portion.

  Since the lubricant scattering prevention portion is formed integrally with the raised portion, the structure of the frame can be simplified as compared with the case where the lubricant scattering prevention portion and the raised portion are provided independently.

  Moreover, it is preferable that the extension length into the said gear box of the said lubricant scattering prevention part is a length which does not contact the said gear part of the said link drive member.

  Since the lubricant scattering prevention portion does not come into contact with the gear portion of the link driving member, it is possible to prevent the malfunction of the gear portion due to the contact between the lubricant scattering prevention portion and the gear portion.

  The power transmission mechanism includes a link mechanism disposed in the flow path portion, and the power transmission member is coupled to the link mechanism to transmit the driving force of the drive source to the link mechanism. Link driving member, when the length of each slat in the direction parallel to the rotation center line is the length of the slat, the length direction of each slat is at both ends in the length direction. A first shaft portion that is a shaft portion protruding into the frame body, the frame body has a plurality of blade support portions that are support portions of the blades, and the retaining portion is A bearing that rotatably supports the link driving member, and each of the plurality of blade support portions is a bearing that rotatably supports the first shaft portion, and the axial hole direction of the retaining portion; And the axial hole direction of each of the blade support portions extends in a straight line or in a parallel direction. Masui.

  The axial hole direction of these link drive member support parts and each slat support part is the same direction, so that the driving force can be efficiently transmitted, and the load applied to each member such as the twist of the slats is applied. Can be suppressed.

  Further, the frame body has a plurality of slat support parts that are support parts of the slats, and protrudes in the length direction at both ends in the length direction of the slats. A first shaft portion, which is a shaft portion supported by the plate support portion, is formed. One end of each of the blades in the length direction protrudes in the length direction and is connected to the second link member. A second shaft portion that is a shaft portion is formed, and when the width in the direction perpendicular to the length direction on the front surface or the back surface of each blade plate is the width of the blade plate, It is preferable that the 2nd axial part is arrange | positioned at the both ends in the width direction of each said blade.

  By providing these shaft portions at both ends in the width direction of each slat, the slat can be rotated with a minimum driving force and the operation accuracy of the slat can be increased.

  Moreover, it is preferable that the frame and the plurality of slats are made of the same resin material.

  By making the frame and the plurality of blades from the same resin material, it is possible to suppress the influence of the positional deviation or the like between the frame and the blades caused by the shape expansion and contraction due to thermal change. Thereby, the malfunction by thermal expansion can be reduced.

  In the damper device of the present invention, the rotation space of the slats is not easily influenced by the opening area of the damper device, can be operated even in a narrow space, has excellent space characteristics, and can prevent water from entering the device. A damper device can be provided.

It is a top view showing a schematic structure and operation of a damper device concerning an embodiment. It is the external appearance perspective view which shows the shape of a slat, and the side view sectional drawing explaining a 2nd axial part. It is the top view and side view sectional drawing which show the shape of a flame | frame. It is a disassembled perspective view of the damper device concerning an embodiment. It is a permeation | transmission top view which shows the reduction gear structure of a gear member. It is a side view which shows the structure of a stopper part. It is a side view which shows rocking | fluctuation operation | movement of a link mechanism. It is sectional drawing seen from the side explaining the opening angle of the insertion port of a slat board support part. It is a top view sectional view and a side view showing the structure of a link drive member support part. It is side view sectional drawing which shows the shape of a flame | frame. It is a schematic diagram which shows the modification of a slat support part. It is a top view sectional view showing the structure at the time of attachment of a damper device.

  Hereinafter, embodiments of a damper device according to the present invention will be described with reference to the drawings. The damper device D according to this embodiment is disposed inside a refrigerator (not shown) and controls the circulation of cold air in the refrigerator. The damper device D of the present embodiment is used, for example, by being fitted between a middle position of a flow path of cold air flowing through a duct of a refrigerator or between a duct and a storage chamber. The application target of the damper device of the present invention is not limited to a refrigerator, and can be applied to a wide range of equipment and facilities for the purpose of opening and closing a fluid flow path and adjusting the flow rate.

<Overview of overall configuration>
FIG. 1 is a plan view showing a schematic configuration and operation of a damper device D according to the present embodiment. FIG. 1A shows the damper device D with the slat 20 closed, and FIG. 1B shows the damper device D with the slat 20 open.

  The damper device D includes three slats 20 and a frame 10 that is a frame that rotatably supports these slats 20. The frame 10 is formed with a first opening 11 and a second opening 12 which are a pair of openings that allow the inside of the frame 10 and the duct to communicate with each other. Cold air flows into the frame 10 of the present embodiment from the second opening 12 and out of the first opening 11. The slats 20 in this embodiment are arranged in parallel so as to follow the first opening 11 of the frame 10. These slats 20 are rotated by the driving force of the motor 40 provided in the damper device D to open and close the first opening 11.

  A frame plate is formed on the frame 10. A bottom plate 10j and a partition wall 10f are formed on the frame plate, and the wing plate 20 is accommodated. The bottom plate 10j is formed to be a bottom when the damper device D is installed. Further, the partition wall 10f is formed upright from the bottom plate 10j. A first opening 11 reinforced by two ribs 10h is formed at the center of the partition wall 10f, and the first opening 11 can be covered with the wing plate 20 by the partition wall 10f. The opening area is adjusted to the extent. The partition 10 f is not provided on the second opening 12 side of the frame 10, so that the opening area of the second opening 12 is formed wider than the first opening 11 by the partition 10 f.

The frame 10 and the slat 20 are made of the same resin material. for that reason,
It is possible to suppress the influence of a positional deviation or the like between the frame 10 and the plurality of slats 20 caused by shape expansion and contraction due to thermal change. For example, in the length direction of the frame 10 on which the slat 20 is rotatably supported, it is possible to suppress the occurrence of rotational malfunction due to rattling of the slat 20 or locking of the slat 20. Similarly, in the clearance between the shaft hole of the frame 10 to which the slat 20 is attached and the shaft part of the slat 20, a malfunction of the rotation due to the backlash of the slat 20 or the locking of the slat 20 occurs. Can be suppressed. Thereby, the flame | frame 10 and the slat 20 can reduce the malfunction by thermal expansion. Here, the length direction of the frame 10 and the slat 20 refers to a direction parallel to the Y-axis direction in the coordinate axis display of FIG.

  In the damper device D, a plate-like member that opens and closes the first opening 11 (a member corresponding to a baffle in Patent Document 1) is divided into a plurality of blades 20. For this reason, even when the opening area of the damper apparatus D becomes large, the rotation space of each blade 20 can be kept constant by increasing the number of blades 20. Thereby, the damper device D facilitates securing the rotation space of the slats 20 and can appropriately operate the slats 20 even in a narrow space.

<Configuration of slats>
FIG. 2 is an external perspective view showing the shape of the slats and a cross-sectional side view for explaining the second shaft portion. FIG. 2A is an external perspective view showing the shape of the slat 20, and FIG. 2B is a cross-sectional side view for explaining the formation position of the second shaft portion 22 in the slat 20.

  The wing plate 20 is an elongated plate-like member. In the following description, in the direction parallel to the rotation center line a of the slat 20, the dimensions excluding the second shaft part 22, the first shaft part 21 f and the first shaft part 21 l described later are the length of the slat 20. l, the dimension in the thickness direction of the slat 20 is referred to as the thickness t1 of the slat 20, and the dimension in the direction perpendicular to the length l direction on the front surface 20a or the back surface 20b of the slat 20 is referred to as the width w of the slat 20. In the following description, the end of the slat 20 on the side of the rotation center line a in the width w direction is referred to as a base end b of the slat 20 and the opposite end is referred to as a tip t of the slat 20. . Here, the front surface 20a of the slat 20 is a surface on the partition 10f side when the slat 20 closes the first opening 11, and the back surface 20b of the slat 20 is a surface opposite to the partition 10f side. is there.

A first shaft portion 21 f and a first shaft portion 21 l which are shaft portions protruding in the length l direction are formed at both ends of the slat 20 in the length l direction. The first shaft portion 21f is formed on the frame 10 side in the length l direction, and the first shaft portion 21l is formed on the link mechanism 501 side to be described later in the length l direction. The first shaft portion 21f and the first shaft portion 21l are rotatably supported by the frame 10, whereby the position of the rotation center line a of the slat 20 is determined. A second shaft portion 22 protruding in the length l direction is formed at one end of the wing plate 20 in the length l direction. The second shaft portion 22 receives the driving force of the motor 40 and reciprocates on an arc centered on the rotation center line a to determine the rotation angle of the slat 20. In addition, when each slat 20 closes the first opening 11, a slat support 15l described later is allowed to escape into the space, and the slat 20 and the slat support 15l are prevented from contacting each other. and the space _{S 1} from the second shank 22 to the tip t, is provided a space _{S 2} from the reinforcing portion 22r to the first shaft portion 21l. The first shaft portion 21f, the first shaft portion 21l, and the second shaft portion 22 prevent interference between the blade plates 20 or the blade support portions 15l in the width w direction of the blade plate 20, and as much as possible. The opening 11 is covered with a space S ₁ from the tip t and disposed on both sides of the space S ₂ . As a result, as compared with the case where the first shaft portion 21l is directly driven, the wing plate 20 can be rotated with a small driving force by separating the rotation center of the first shaft portion 21l from the second shaft portion 22 which is a power point. In addition, the operation accuracy of the slat 20 is improved.

  Both end surfaces in the width w direction of the slat 20 are formed by curved surfaces with rounded corners on the front surface 20a side and the back surface 20b side. As a result, when the slats 20 are opened and closed, the adjacent slats 20 are prevented from coming into contact with the corners, and the gaps between the slats 20 when the first opening 11 is closed can be reduced. It is said that.

The second shaft portion 22 is provided with a reinforcing portion 22r integrally formed with the wing plate 20 and the second shaft portion 22. Further, the base end portion 22 b of the second shaft portion 22 is provided with a reinforcing portion 22 r having a radial cross-sectional area that is larger than the tip portion 22 t of the second shaft portion 22. Here, the radial direction is a direction parallel to the YZ plane in the coordinate axis display of FIG. The reinforcing portion 22r can receive stress applied to the base end portion 22b of the second shaft portion 22 when the slat 20 swings. Therefore, the reinforcing part 22r can supplement the strength of the base end part 22b of the second shaft part 22. Further, the reinforcing portion 22r supports the side surface of the second shaft portion 22 on the first shaft portion 21l side, thereby supplementing the strength of the second shaft portion 22. Further, the second shaft portion 22 is disposed slightly on the center side from the tip t of the slat 20. And the space _{S 1} from the second shank 22 to the tip t, space _{S 2} from the reinforcing portion 22r to the first shaft portion 21l is when each vane plate 20 closes the first opening 11 will be described later wings The plate support 15l is allowed to escape into the space, and the blade 20 and the blade support 15l are prevented from coming into contact with each other. The second shaft portion 22 is arranged at a distance ₁ minute space S from the front end t of the blade plate 20. The space S _1, when each blade plate 20 closes the first opening 11, in a direction parallel to the Y-axis direction in the coordinate display in FIG. 2 (b), the blade plate 20 and the vane support part 15l is , Are provided in layers.

  The second shaft portion 22 is provided on an end surface 22 f on one end side in the length l direction of the slat 20. The diameter d <b> 1 of the second shaft portion 22 is provided smaller than the thickness t <b> 1 of the blade 20 in the direction of the thickness t <b> 1 of the blade 20. Thereby, a stepped portion 22 a is inevitably formed at the base end portion 22 b of the second shaft portion 22. Here, the base end portion 22b is provided with an R-forming surface 22g that is built up in a concave R shape. Moreover, although the 2nd axial part 22 is provided in the substantially cylindrical shape, you may provide in the substantially square pillar shape in which the corner | angular part was rounded, for example.

  When the slat 20 swings, stress is generated in the end portion 22c of the second shaft portion 22 on the reinforcing portion 22r side and the step portion 22a. Since the slat 20 is provided with the step portion 22a, the stress generated when swinging is dispersed in the step portion 22a. Thereby, the intensity | strength of the slat 20 is raised. In addition, since the step portion 22a is provided, the gap between the blade 20 and the frame 10 is wide as compared with the configuration in which the step portion 22a is not provided. For example, when it is assumed that the slat 20 is fixed to the frame 10 due to freezing of dew condensation water, the slat 20 is widened by the gap between the surface 20a and the side surface on the surface 20a side of the reinforcing portion 22r. Freezing is suppressed. Therefore, the breakage of the slat 20 is suppressed by providing the step portion 22a.

  Further, as shown in FIG. 2B, in order to open and close the first opening 11 by the wing plate 20, the direction in which the first opening 11 is closed by the wing plate 20 in the direction of swinging the wing plate 20. When the b1 direction and the direction in which the first opening 11 is opened by the wing plate 20 are the b2 direction, the second shaft portion 22 is located on the end surface 22f on one end side of the wing plate 20 more than the end portion 22d on the b1 direction side. It is provided on the b2 direction side. At this time, the second shaft portion 22 is provided with a stepped portion 22a at an end portion 22d on the side close to the frame 10. When the slat 20 is closed to the frame 10, the step 22 a is provided on the side approaching the frame 10, and particularly when the slat 20 fixed to the frame 10 due to freezing of condensed water is peeled off from the frame 10. The breakage of the second shaft portion 22 is prevented.

  Further, the second shaft portion 22 is provided on the b1 direction side of the end surface 22f on the one end side of the slat 20 with respect to the end portion 22e on the b2 direction side. At this time, the second shaft portion 22 is provided with a stepped portion 22 a at an end portion 22 e on the side away from the frame 10. Therefore, the wing plate 20 is provided with step portions 22a on both sides of the second shaft portion 22 on the end face 22f. Thus, in both cases of opening and closing the frame 10 by the wing plate 20, the second shaft portion 22 is prevented from being broken when the wing plate 20 fixed to the frame 10 is peeled off from the frame 10 by freezing of condensed water. Yes.

  In the present embodiment, three slats 20 are used, but the upper limit is not particularly limited on the condition that the number of slats of the damper device of the present invention is two or more. For example, by reducing the width w of the slats 20 and disposing more slats 20 on the same area of the flow path, the rotational space of each slat 20 can be further reduced. Of course, as the number of parts increases, the failure rate and assembly man-hours also increase. On the other hand, if the number of the slats 20 is reduced, such a problem can be reduced, but the rotation space of the slats 20 is increased by the amount of the decrease in the number of slats 20. The number of slats of the damper device according to the present invention may be determined in accordance with the environmental conditions in which the damper device is used, taking into account the balance between the advantages and disadvantages associated with the increase / decrease. In the present embodiment, it is preferable that the number of slats 20 is an odd number because of the structure of a link mechanism 50l described later.

<Frame structure>
(overall structure)
FIG. 3 is a plan view and a side sectional view showing the shape of the frame. 3A is a plan view of the frame 10, and FIG. 3B is a cross-sectional view in the AA direction in FIG. 3A.

  The frame 10 is a substantially rectangular hollow frame that rotatably supports the three slats 20. The frame 10 has a second opening 12 and a first opening 11 through which cool air passes. Hereinafter, the hollow portion of the frame 10 that communicates the second opening portion 12 and the first opening portion 11 is referred to as a flow path portion 10 a of the frame 10. As described above, the frame 10 is formed with the partition wall 10f which is a frame plate standing up from the bottom plate 10j. A first opening 11 is formed in the center of the partition wall 10f. Further, the end of the frame 10 on the right side in FIG. 3A is a case-shaped portion 10g of the frame 10 in which a gear member 50g described later is accommodated, and a link that is a space in which a link mechanism 50l described later is accommodated. The mechanism arrangement portion 101 is integrally formed.

  In the frame 10 of the present embodiment, the height h of the flow channel portion 10a is the width of each slat 20 when the dimension of the flow channel direction in the flow channel portion 10a is the height h of the flow channel portion 10a. The height is approximately the same as w. Thereby, thickness reduction of the whole damper apparatus D is achieved. The height h of the flow path portion 10a does not always have to be the same as the width w of the slat 20 and may be further lowered according to the environmental conditions in which the damper device D is used. It may be higher than the width w. For example, by making the height h of the flow path portion 10a higher than the width w of each vane plate 20, it is possible to prevent inadvertent application of force to the vane plate 20 when the damper device D is assembled or transported. .

  The first opening 11 is formed at the center of the partition wall 10f, and is reinforced by two ribs 10h. Further, the bottom plate 10j is a frame plate that becomes the bottom when the damper device D is installed.

(Configuration of slat support)
A plurality of slat support portions 15 f and slat support portions 15 l that support the slats 20 are formed in the frame 10. The slat support 15f is formed on the left side of the frame 10 as viewed in FIG. 3A, and the slat support 15l is formed on the right side of the frame 10 as viewed in FIG. The slat support 15f is a bearing that rotatably supports the first shaft part 21f of the slat 20 on the frame 10 side. The slat support 15l is a bearing that rotatably supports the first shaft 21l on the link mechanism 501 side. The wing plate support portion 15 f and the wing plate support portion 151 are provided in pairs at positions corresponding to both ends of the wing plate 20 in the length l direction. Of the pair of slat support 15f and slat support 15l of each slat 20, the slat support 15l on the right side in FIG. 3 (a) is formed in the partition wall 10f, and part of the circumferential direction thereof. In addition, an insertion port 15a is formed which is a cutout portion into which the first shaft portion 21l is inserted in the radial direction with respect to the wing plate support portion 15l. The blade support part 15 f on the left side of FIG. 3A is formed on the inner wall surface of the frame 10, and the shaft hole of the blade support part 15 f is a recess that does not penetrate the side wall of the frame 10. Thereby, the grease applied to the slat support 15f is retained in the shaft hole, and the grease is prevented from easily flowing out to the outside. In the slat support 15l on the right side of FIG. 3 (a), the first shaft 21l of the slat 20 is elastic in the insertion port 15a with respect to the insertion port 15a formed in the slat support 15l. It is inserted by deforming.

  Further, the pair of the slat support 15f and the slat support 15l disposed on the uppermost side in FIG. 3 (a) is the tip of the slat 20 when the supporting slat 20 is in a closed state. t is adjusted to a position overlapping with the partition wall 10f (see FIG. 1A). Furthermore, the pair of the slat support 15f and the slat support 15l arranged at the lowermost side in FIG. 3A is at least of the slat 20 when the supporting slat 20 is fully open. A part of the first opening 11 is adjusted to a position that does not affect the opening area of the first opening 11 when viewed from the first opening 11 side (see FIG. 1B). In the damper device D of the present embodiment, the slat support 15f and the slat support 15l are arranged in this manner, so that the flow of the flow path 10a is not inhibited.

  Further, as shown in FIG. 8, the opening angle of the insertion port 15 a in the circumferential direction of each slat plate support portion 15 l in which the insertion port 15 a is formed is within the opening radial direction of the first opening 11. The blades 20 are set at an angle that is perpendicular to the short side direction 11a, which is a direction orthogonal to the length l direction of each blade 20. The “opening diameter direction” of the first opening 11 is a plane direction that defines the opening area of the first opening 11 and is a direction parallel to the XY plane in the coordinate axis display of FIG. Further, the short side direction 11a and “right angle” refer to a direction parallel to the Z-axis direction in the coordinate axis display of FIG.

  By forming the insertion port 15a of the blade support part 15l at a right angle to the short side direction 11a of the first opening 11, the insertion port 15a is in a direction in which the rotation operation of the blade 20 is fully opened. It will be opened. In the damper device D of the present embodiment, the notch direction of the insertion port 15a is oriented in the direction in which the rotation operation of the slat 20 is fully opened, whereby the slat 20 is inserted into the slat support portion 15l. 15a can be fitted from the vertical direction. Thereby, the slat 20 can be assembled to the frame 10 with one touch. Here, the vertical direction means a direction parallel to the Z-axis direction in the coordinate axis display of FIG. Further, each wing plate support 15l is formed in a symmetrical shape with respect to a direction parallel to the Y-axis direction in the coordinate axis display of FIG. Thereby, each slat board support part 15l can disperse | distribute the load applied from the slat board 20 equally right and left, when the slat board 20 is attached. Therefore, damage to the slat support 15l is suppressed. When the insertion port 15a of the slat support 15l shown in FIG. 8 is moved vertically upward so that at least a part of the slat support 15l is integrated with the frame 10, the frame 10 Can be made compact.

  FIG. 10 is a side sectional view showing the shape of the frame as viewed from the FF direction in FIG. As shown in FIG. 3A and FIG. 10, the inner surface of the frame 10 that defines the flow path portion 10 a is provided with a recessed portion 10 b in which the position of the inner surface is partially recessed outside the frame 10. It has been. Moreover, the hollow part 10b is provided with the inner dimension a1 of the flow path part 10a partially depressed to the inner dimension a2. The hollow portion 10b is provided in order to secure a swinging space for the second link member 57 described later. Further, the second link member 57 is provided to rotate each slat 20. Accordingly, a gap m is secured between the lowermost blade support part 15l in FIG. 10 and the inner peripheral surface 10i of the flow path part 10a in the recessed part 10b.

  If there is no recess 10b, the wing plate support 15l having a clearance m with the inner peripheral surface 10i of the flow passage 10a is in contact with the inner peripheral surface 10i of the flow passage 10a or the inner periphery. A portion of the slat support 15l is integrated with the surface 10i. When the slat support 15l is in contact with the inner peripheral surface 10i, the slat support 15l is inhibited from being deformed toward the inner peripheral surface 10i, so that the amount of deformation of the other part becomes large. As a result, the slat support 15l is easily damaged. On the other hand, the lowermost wing plate support 15l in FIG. 10 has a clearance m between the inner peripheral surface 10i of the flow path portion 10a, so that when the wing plate 20 is attached, Damage to the plate support 15l is suppressed.

<Power transmission mechanism>
(overall structure)
FIG. 4 is an exploded perspective view of the damper device D of the present embodiment. The damper device D opens or closes the first opening 11 by rotating the slats 20 with the driving force of the motor 40 to connect or block the cool air flow path. The driving force of the motor 40 is transmitted to the wing plate 20 by the power transmission mechanism 50 including the gear member 50g and the link mechanism 50l.

(Gearbox)
The frame 10 is formed with a gear box 10n which is a case body in which the gear member 50g is accommodated. The gear box 10n includes three case members, a case-like portion 10g of the frame 10, a motor case 43 in which the motor 40 is accommodated, and a middle case 30 that is a case member disposed therebetween.

(motor)
A stepping motor is used as the motor 40 of this embodiment. The stepping motor can rotate in both forward and reverse directions, and the rotation angle can be calculated from the number of steps. Therefore, it is not necessary to separately perform feedback control using a rotary encoder or the like in order to detect the arrangement angle of the slats 20 from time to time. Thereby, reduction of the number of parts in the whole damper apparatus D and size reduction of an apparatus are achieved.

(Gear member)
FIG. 5 is a transparent plan view showing the speed reduction structure of the gear member 50g as viewed from the direction B of FIG. Hereinafter, the gear member 50g will be described with reference to FIGS.

  The driving force of the motor 40 is decelerated through the gear member 50g and transmitted to the link mechanism 50l from the motor pinion 41 fixed to the output shaft. The gear member 50g is composed of five gear members, that is, a first gear 51 to a fourth gear 54 and a fifth gear 55 that is a link driving member that swings the link mechanism 50l.

  The motor 40 is housed in a motor case 43 that is a case member constituting the gear box 10n, and is a case member disposed between the case-like portion 10g formed on the frame 10 and the motor case 43. They are connected by a middle case 30. The first gear 51 is disposed in a space defined by the motor case 43 and the middle case 30, and is rotatably supported by a support shaft 42 provided in the space. The second gear 52 to the fourth gear 54 are disposed in a space defined by the case-like portion 10g of the frame 10 and the middle case 30, and are rotatably supported by a support shaft 32 provided in the space. Yes. The fifth gear 55 is rotatably supported by a concave portion 33 formed in the middle case 30 and a link driving member support portion 16 which is a bearing portion penetrating from the case-like portion 10g to the flow path portion 10a.

  The first gear 51 to the fourth gear 54 are a reduction gear train that reduces the rotation of the motor pinion 41 and transmits it to the fifth gear 55. The fifth gear 55 is a member in which a gear portion 55g formed with a fan-shaped gear meshing with the fourth gear 54 and a shaft portion 55s that is an output shaft portion that transmits the driving force to the link mechanism 50l are integrated. It is. A portion of the outer peripheral surface of the shaft portion 55s of the fifth gear 55 is cut out in a flat shape. A pair of such notches are provided at positions that are symmetrical in the circumferential direction of the shaft portion 55s.

  The first gear 51 to the fourth gear 54 constituting the gear member 50g are compound gears in which a large-diameter spur gear and a small-diameter spur gear are connected and integrated in the axial direction. The motor pinion 41 of the motor 40 meshes with the large diameter gear 51w of the first gear 51, and the rotation of the large diameter gear 51w is decelerated and transmitted to the small diameter gear 51n. The middle case 30 is formed with a covered cylindrical cover portion 31 protruding toward the frame 10, and a small-diameter gear 51n of the first gear 51 is accommodated in the cylinder. The cover portion 31 is partially cut away in the circumferential direction, and a portion of the small-diameter gear 51n is exposed therefrom. The exposed portion of the small diameter gear 51n meshes with the large diameter gear 52w of the second gear 52. Thereafter, the small diameter of the fourth gear 54 is sequentially changed from the small diameter gear 52n of the second gear 52 to the large diameter gear 53w of the third gear 53, from the small diameter gear 53n of the third gear 53 to the large diameter gear 54w of the fourth gear 54. The driving force of the motor 40 is decelerated and transmitted from the gear 54n to the gear portion 55g of the fifth gear 55.

  FIG. 6 is a side view of the fifth gear 55 inserted into the link driving member support 16 as viewed from the direction C of FIG. For convenience of explanation, members other than the frame 10 and the fifth gear 55 are not shown. The gear portion 55g of the fifth gear 55 and the case-like portion 10g of the frame 10 are in contact with each other when the blade 20 is at a predetermined rotation angle, that is, when the fifth gear 55 is at a predetermined angular position. It has stoppers 55c, 55v, 10c, and 10v that block the transmission of the driving force to the link mechanism 50l by abutting. In the gear portion 55g, the stopper portion 55c of the gear portion 55g abuts against the stopper portion 10c of the case-like portion 10g at a position where the slat 20 rotates and the first opening portion 11 is fully closed. Further, in the gear portion 55g, the stopper portion 55v of the gear portion 55g contacts the stopper portion 10v of the case-like portion 10g at a position where the vane 20 rotates to fully open the first opening portion 11. Thereby, the range of the swing angle of the fifth gear 55 is between the position where the stopper portion 55v contacts the stopper portion 10v and the position where the stopper portion 55c contacts the stopper portion 10c. It is a range that opens and closes. Moreover, the stopper parts 10c and 10v are comprised by the protruding parts 10x and 10y which protruded from the surface 10w used as the bottom face at the time of installation of the damper apparatus D among the inner surfaces of the case-like part 10g. The raised portions 10x and 10y are formed continuously from the inner surface 10r of the case-like portion 10g provided with the through hole 16a. The power transmission mechanism 50 of the present embodiment is configured such that when the slat 20 reaches its rotation limit angle, the transmission of the driving force is interrupted by the power transmission member before the link mechanism 50l. Excessive stress is prevented from being applied to the wing plate 20 and the link mechanism 50l, and the reduction in the component life of the wing plate 20 and the link mechanism 50l is suppressed. In the present embodiment, the stopper portions 55 c and 55 v are provided on the fifth gear 55, but the gear member-side stopper portion of the present invention may be provided on a gear member other than the fifth gear 55. In the present embodiment, the case-like portion 10g is integrally formed with the frame 10 as a part of the frame 10, but the case-like portion 10g may be separate from the frame 10.

(Link drive member support)
FIG. 9 is a cross-sectional plan view and a side view showing the structure of the link drive member support. 9A is a plan view sectional view showing the structure of the link driving member support portion, and FIG. 9B is a side view of the structure of the link driving member support portion as viewed from the direction C in FIG. . For convenience of explanation, FIG. 9A omits members other than the frame 10 and the fifth gear 55, and FIG. 9B omits members other than the frame 10. Hereinafter, the link drive member support 16 and the shaft 55s of the fifth gear 55 will be described with reference to FIG.

  The fifth gear 55 is a component constituting the gear member 50g which is a power transmission member in the power transmission mechanism 50 including the gear member 50g and the link mechanism 50l. The shaft portion 55s of the fifth gear 55 is inserted into the flow channel portion 10a from the through hole 16a formed in the frame 10. The shaft portion 55s is formed with a front end portion 55d, a large diameter portion 55f, and an enlarged diameter portion 55e, and the front end portion 55d is inserted into the flow path portion 10a. The large diameter portion 55f has a diameter larger than that of the tip portion 55d. The enlarged diameter portion 55e is formed between the distal end portion 55d and the large diameter portion 55f. The distal end portion 55d is fitted in a fitting hole 56b of a first link member 56 described later in the flow path portion 10a.

  A link driving member support portion 16 that is a retaining portion is formed at the edge portion 16c of the through hole 16a. The link driving member support portion 16 supports the tip portion 55d of the shaft portion 55s. Further, the shape of the surface of the link drive member support portion 16 facing the shaft portion 55s supports the outer peripheral surface of the tip portion 55d of the shaft portion 55s, and the axis line of at least a part of the enlarged diameter portion 55e and the shaft portion 55s. It can abut in the direction and is formed in a shape that covers a part of the large-diameter portion 55f on the tip portion 55d side. Further, the diameter-enlarged portion 55 e is in contact with the inner peripheral surface of the link driving member support portion 16, thereby restricting the movement of the fifth gear 55 in the axial direction. Here, the axial direction means a direction parallel to the X-axis direction in the coordinate axis display of FIG.

  The shape of the surface of the link drive member support portion 16 facing the shaft portion 55s supports the outer peripheral surface of the tip portion 55d of the shaft portion 55s, and extends in the axial direction of at least a part of the enlarged diameter portion 55e and the shaft portion 55s. By being formed in a shape that covers a part of the large-diameter portion 55f on the distal end portion 55d side, the intrusion path of water that enters the case-like portion 10g from the distal end portion 55d is formed by the enlarged diameter portion. It is longer by the length of 55e. Thereby, it can suppress that water penetrate | invades in case-like part 10g. Further, in the shaft portion 55s, the intrusion path of water entering the case-like portion 10g from the tip portion 55d is bent by the enlarged diameter portion 55e. This prevents water from entering the case-like portion 10g.

  Between the shaft portion 55s and the link driving member support portion 16, grease g which is a lubricant is filled. This prevents water from entering through these gaps. Further, the shape of the surface of the link drive member support portion 16 facing the shaft portion 55s supports the outer peripheral surface of the tip portion 55d of the shaft portion 55s, and the axis line of at least a part of the enlarged diameter portion 55e and the shaft portion 55s. The inner surface of the link drive member support portion 16 is a step-shaped bent portion because it can be contacted in the direction and covers a part of the large-diameter portion 55f on the distal end portion 55d side. A stepped portion 16b is provided. Thereby, the outflow of the grease g due to the rotation of the shaft portion 55s is suppressed, and the waterproof effect by the grease g can be kept long.

  Further, the gap d provided between the large diameter portion 55f of the shaft portion 55s and the link drive member support portion 16 is larger than the clearance e provided between the tip portion 55d and the link drive member support portion 16. Is also large. As a result, the gap d can be filled with more grease g than the clearance e, and the waterproof effect of the grease g can be maintained for a long time. On the other hand, by reducing the clearance e between the distal end portion 55d of the shaft portion 55s and the link drive member support portion 16 as much as possible, the positioning accuracy of the distal end portion 55d with respect to the link drive member support portion 16 is enhanced. The entrance of water into the case-like portion 10g is narrowed, and the waterproofness is further enhanced.

  Further, the corner portion 55a between the large diameter portion 55f and the enlarged diameter portion 55e is rounded into a curved surface. The shape of the surface of the link drive member support portion 16 facing the shaft portion 55s supports the outer peripheral surface of the tip portion 55d of the shaft portion 55s, and extends in the axial direction of at least a part of the enlarged diameter portion 55e and the shaft portion 55s. Since it is abuttable and is formed in a shape that covers a part of the large-diameter portion 55f on the tip end portion 55d side, the inner surface of the link driving member support portion 16 is a stepped portion that is a stepped portion. A portion 16b is provided. Then, by rounding the corner portion 55a between the large-diameter portion 55f and the enlarged-diameter portion 55e into a curved surface, a clearance f that the corner portion 55a cannot reach is secured between the corner portion 55a and the stepped portion 16b. Has been. Since the grease g stored in the gap f does not easily scatter and leak, the waterproof effect by the grease g is kept longer.

  Further, a large-diameter portion 55f of the shaft portion 55s is provided to extend in the case-like portion 10g of the gear box 10n. Further, a wall portion 10u which is a lubricant scattering prevention portion is provided on the inner surface 10r of the case-like portion 10g constituting the inner surface of the gear box 10n. The wall 10u is formed so as to cover at least a part of the outer peripheral surface 55x of the large diameter portion 55f. As shown in FIGS. 9A and 9B, the wall 10u covers a part of the outer peripheral surface 55x of the large-diameter portion 55f from the inner surface 10r of the case-like portion 10g to the inside of the case-like portion 10g. In addition, a substantially C-shaped cylinder is provided around a through hole 16a formed in the inner surface of the flow path portion 10a.

  By providing the wall portion 10u, the grease g applied to the outer peripheral surface of the shaft portion 55s does not easily scatter and leak and remains inside the wall portion 10u. Therefore, the grease g is prevented from flowing into the case-like portion 10g. Thereby, the effect which prevents the penetration | invasion of the water by grease g can be kept long. Further, depending on the installation direction, even when water enters the case-like portion 10g, it is possible to keep the water within the range of the wall portion 10u. Here, the range is the inside covered with the wall 10u. The grease g only needs to be applied at least between the tip 55d of the shaft portion 55s and the inner peripheral surface of the link driving member support 16.

The wall 10u is provided integrally with the raised portions 10x and 10y. Thereby, the structure of the case-like portion 10g is simplified as compared with the case where the wall portions 10u and the raised portions 10x and 10y constituting the stopper portions 10c and 10v are provided independently.

  Further, the wall portion 10u is provided to extend from the inner surface 10r of the case-like portion 10g by a length u to the inside of the case-like portion 10g. Here, the length u is provided such that the tip 10z of the wall portion 10u does not come into contact with the gear portion 55g of the fifth gear 55 in the direction parallel to the X-axis direction in the coordinate axis display of FIG. ing. The length u is set to a length that does not contact any gear other than the fifth gear 55. Since the wall portion 10u does not come into contact with the gear portion 55g of the fifth gear 55, the malfunction of the gear portion due to the contact between the wall portion 10u and the gear portion 55g is prevented.

(Link mechanism)
FIG. 7 is a view of the swinging operation of the link mechanism 50l as viewed from the direction C in FIG. FIG. 7A is a transmission side view when the blade 20 is in a fully open state, and FIG. 7B is a transmission side view when the blade 20 is in a closed state. Hereinafter, the link mechanism 50l will be described with reference to FIGS.

  The link mechanism 50l includes a first link member 56 and a second link member 57. The first link member 56 receives the driving force of the fifth gear 55 and swings the second link member 57, whereby the second link member 57 moves the second shaft portion 22 of the three blades 20, The vanes 20 are reciprocated on an arc centered on the rotation center line a of the vanes 20 to rotate the vanes 20.

  The first link member 56 is a member in which two substantially cylindrical bearings are connected to each other in the radial direction. The first link member 56 has a fitting hole 56b into which the shaft portion 55s of the fifth gear 55 is fitted, and a shaft hole 56a that rotatably supports the connecting shaft 57a of the second link member 57. Yes. The shape of the fitting hole 56 b of the first link member 56 corresponds to the shape of the shaft portion 55 s of the fifth gear 55. As a result, the portion of the shaft portion 55s cut out in the plane engages with the fitting hole 56b in the circumferential direction, and the fifth gear 55 and the first link member 56 rotate integrally.

  The second link member 57 is a member mainly composed of an elongated plate-like body. Three connecting holes 57b that rotatably support the second shaft portion 22 of the three slats 20 are formed on the surface of the second link member 57 on the slat 20 side, and the surface on the opposite side. The connecting shaft 57 a supported by the shaft hole 56 a of the first link member 56 protrudes toward the first link member 56. The connecting hole 57b is formed as a shaft hole having a hole bottom. The second link member 57 can position the blade 20 in the axial direction by bringing the blade 20 into contact with the bottom of the connection hole 57b. Thereby, the catch by the 2nd link member 57 and the reinforcement part 22r of the slat 20 contact | abutting is suppressed. Here, the axial direction means a direction parallel to the X-axis direction in the coordinate axis display of FIG.

  In the link mechanism 50l, the wing plate 20, and the frame 10 of this embodiment, the first link member 56 is a drive link, the second link member 57 is an intermediate link, the frame 10 is a fixed link, and each wing plate 20 is a driven link. The four-bar linkage mechanism is configured. Thereby, it is possible to synchronize the rotation operation of each slat 20 with a simple structure.

  Here, the shaft portion 55 s of the fifth gear 55 is supported on the link driving member support portion 16 of the frame 10. In the frame 10 in this embodiment, the link driving member support 16 and the above-described slat support 15f and slat support 15l are integrally formed. In the damper device D of the present embodiment, the slat support 15f, the slat support 15l, and the link driving member support 16 are integrally formed with the frame 10, so that the slat 20 and the link mechanism 50l are formed. It is possible to keep the relative positional relationship constant. Thereby, the influence on the positional accuracy of these members due to dimensional errors and assembly errors is suppressed, and the smooth operation of the slats 20 is ensured.

  In addition, as can be seen from the fact that the second opening 12 side of the link mechanism 50l in FIGS. 1 and 4 is covered with the cover portion 19 that is a protective cover in FIG. Is within the range of the flow path portion 10a. That is, the link mechanism 50l of the present embodiment does not protrude from the end of the frame 10 in the entire process of the swinging operation. Thereby, the freedom degree of the installation place of the damper apparatus D is raised.

  Further, the axial hole direction of the link driving member support portion 16 and the axial hole directions of the blade support portions 15f and the blade support portions 15l extend in a straight line or parallel direction. In the damper device D of the present embodiment, the drive force of the motor 40 is efficiently obtained because the link drive member support portion 16, the blade support portions 15f and the blade support portions 15l have the same axial hole direction. In addition, the load applied to each member such as torsion of the slats 20 can be suppressed.

  Further, when the number of the slats 20 that the second link member 57 rotatably supports is an odd number, the connecting shaft 57a of the second link member 57 and the connecting hole formed at the center in the odd connecting holes 57b. 57b can be arranged coaxially. Accordingly, the shaft portion 55s of the fifth gear 55 and the first link member 56 can be arranged at the center position in the left-right direction of the second link member 57. Therefore, the second link member 57 can smoothly turn the slat 20. Here, the left-right direction is a direction parallel to the Y-axis direction in the coordinate axis display of FIG.

(Clear clearance process between parts)
FIG. 12 is a cross-sectional view in plan view showing the structure when the damper device is assembled. 12A is a cross-sectional view in plan view showing the structure when the first link member 56, the second link member 57, and the blades 20 that are link driving members are assembled, and FIG. 12B is the fifth gear. FIG. 5 is a cross-sectional view in plan view showing a structure in which a clearance that is play between parts is removed by adjusting a press-fit margin after press-fitting 55 into a second link member 57. Hereinafter, with reference to FIG. 12, the process of removing the clearance between components by adjusting the press-fitting margin after press-fitting the fifth gear 55 into the second link member 57 will be described.

  As shown in FIG. 12A, the damper device D assembles the blades 20, the first link member 56, and the second link member 57 to the frame 10. These parts are assembled so as not to interfere with each other. Thereby, the smooth operation of each component is ensured, and a clearance at the time of assembly is inevitably provided between the components. Here, the clearance is a margin in dimensions such as tolerances considered in design, and a gap described later is intentionally provided.

  Further, when the direction parallel to the length direction of each slat 20 is the axial direction of the damper device D, the first link member 56, the second link member 57, each slat 20, and each connecting portion of the frame 10 Is provided with play that is a gap in the axial direction. Here, the axial direction means a direction parallel to the X-axis direction in the coordinate axis display of FIG.

  At this time, between each blade 20 and the frame 10, an end surface 21h on the first shaft portion 21f side on the frame 10 side on the right side in FIG. (A) A clearance h1 that is play is provided between the end face 15c of the blade support part 15f on the right side as viewed. Further, a clearance i is provided between the bottom surface of the connecting hole 57b in the second link member 57 and the tip 22t of the slat on the left side of each slat 20 as viewed in FIG. A clearance j is provided between the end surface 56c on the right side of the fitting hole 56a in the first link member 56 as viewed in FIG. 12A and the end surface 57c of the base end portion of the connecting shaft 57a in the second link member 57. .

  Further, the position of the fifth gear 55 in the axial direction of the damper device D is fixed. The first link member 56 can change the position of the damper device D in the axial direction within a gap k described later while maintaining the press-fitted state with the fifth gear 55.

  Next, the process for removing the clearance between the components will be described. As shown in FIG. 12 (b), the damper device D is a shaft that is a convex portion of the fifth gear 55 after assembling each blade 20, the first link member 56, and the second link member 57 to the frame 10. The portion 55 s is locked by the friction force of the fifth gear 55 and the first link member 56 by press-fitting the portion 55 s into the fitting hole 56 b that is a through hole of the first link member 56. At this time, the end surface 56 c of the first link member 56 abuts on the end surface 57 c of the second link member 57 by adjusting the press-fitting margin. Further, the second link member 57 presses each wing plate 20 by being pressed by the first link member 56. At this time, the tip 22t of the slat 20 abuts the bottom surface of the connection hole 57b of the second link member. Thereby, it is possible to provide a gap between the second link member 57 and the reinforcing portion 22r of the slat 20 and the second link member 57 and the reinforcing portion 22r of the slat 20 during the opening / closing operation of the slat 20. Are prevented from interfering with each other. Further, each wing plate 20 presses the frame 10 by being pressed by the second link member 57. At this time, the end face 21h of each slat 20 abuts on the end face 15c of the flange part of the slat support 15f. Thereby, the sliding surface of each slat 20 and the frame 10 becomes only a portion where the flange portion and the slat 20 overlap, and the frictional force during the opening / closing operation of the slat 20 is suppressed. Further, during the opening / closing operation of the slat 20, the front end 22 t of the slat 20 and the bottom surface of the connection hole 57 b of the second link member come into contact with each other and slide. Further, the first link member 56 and the second link member 57 come into contact with each other and slide.

  At this time, the clearance h1, clearance i, and clearance j between the components of the first link member 56, the second link member 57, each blade 20, and the frame 10 are removed. Further, a gap k is provided between the end surface 55x on the left side in FIG. 12B of the shaft portion 55s of the fifth gear 55 and the end surface 56d on the left side in FIG. 12B of the first link member 56. The adjustment range, which is the margin for press-fitting the gap k, is provided longer than the cumulative amount of the clearance h1, the clearance i, and the clearance j. Accordingly, the damper device D is provided with a press-fit margin longer than the cumulative amount of the clearance h1, the clearance i, and the clearance j so that the clearance h1, the clearance i, and the clearance j can be crushed. And the clearance j is crushed and adjusted only at the margin of press-fitting, the backlash between the parts of the first link member 56, the second link member 57, each vane plate 20, and the frame 10 is suppressed, The malfunction is reduced.

<Modification>
Below, the modification of the damper apparatus D of previous embodiment is demonstrated. In the following description, configurations having the same or similar structures and functions as those of the previous embodiment are denoted by the same reference numerals as those of the previous embodiment, and detailed description thereof is omitted.

  FIG. 11 is a schematic diagram showing a modification of the slat support. As shown in FIG. 11, the opening angle of the insertion port 15 a in the circumferential direction of each slat plate support portion 15 h in which the insertion port 15 a is formed is each of the opening diameter directions of the first opening portion 11. An angle that is not parallel and not perpendicular to the short-side direction 11a that is a direction orthogonal to the length l direction of the slat 20 is inclined with respect to the short-side direction 11a of the first opening 11. It is set to an angle. The “opening diameter direction” of the first opening 11 is a surface direction that defines the opening area of the first opening 11 and is a direction parallel to the XY plane in the coordinate axis display of FIG. Further, the short side direction 11a and “parallel” mean a direction parallel to the Y axis direction in the coordinate axis display of FIG. 11, and the short side direction 11a and “right angle” mean a direction parallel to the Z axis direction in the same coordinate axis display. Say.

  By forming the insertion port 15a of the wing plate support portion 15h obliquely with respect to the short side direction 11a of the first opening portion 11, the insertion port 15a is in a direction at which the rotation operation of the wing plate 20 is halfway. Will be opened. In general, when the damper device D as in the present invention is transported, the damper device D is packed in a direction in which the slat 20 is in a closed state or in a direction in which the slat 20 is fully opened. In the damper device D of the present embodiment, the notch direction of the insertion port 15a is oriented in the direction in which the blade plate 20 is in the middle of the rotation operation. It is prevented from falling off the plate support 15h.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, all the blades 20 are rotated by the driving force of one motor 40, but a configuration in which each blade 20 is rotated using a plurality of motors 40 is conceivable.

  In the above embodiment, the fifth gear 55 has rounded the corner 55a between the large diameter portion 55f and the enlarged diameter portion 55e of the shaft portion 55s into a curved surface. The structure etc. which form the recessed part for accumulation are considered.

  Moreover, in the said embodiment, wall part 10u covers the flow-path part 10a so that a part of outer peripheral surface 55x of the large diameter part 55f may cover the inside of the case-like part 10g from the inner surface 10r of the case-like part 10g. Although it is provided in a substantially C-shaped cylinder around the through-hole 16a formed on the inner surface, it is cylindrical around the through-hole 16a so as to cover the entire circumference of the outer peripheral surface 55x of the large-diameter portion 55f. The structure formed in this is considered.

D Damper device 10 Frame (frame)
10a Channel portion 10c, 10v Stopper portion 10n Gear box 10u Wall portion (lubricant scattering prevention portion)
10x, 10y protuberance 11 first opening 12 second opening 15f, 15h, 15l slat support 15a insertion port 16 link drive member support (retaining part)
16a Through-hole 16c Edge 20 Blade 20a Front 20b Back 21f, 21l First shaft 22 Second shaft 30 Middle case (case member)
40 Motor (drive source)
43 Motor case (case member)
50 Power transmission mechanism 50g Gear member 50l Link mechanism 55 Fifth gear (link drive member)
55a Corner portion 55c, 55v Stopper portion 55d Tip portion 55e of shaft portion 55s Expanded portion 55f of shaft portion 55s Large diameter portion 55g of shaft portion 55s Gear portion 55s Shaft portion (output shaft portion)
56 First link member 57 Second link member a Rotational center line b of slat 20 b Proximal end d of slat 20 e Clearance e between large-diameter portion 55f and link drive member support 16 Front end 55d and link drive Clearance between the member support 16 and grease (lubricant)
h Height of flow path part 10a l Length of slat 20 t Tip u of slat 20 Length (extended length)
w Width of slat 20

Claims (14)

A driving source;
Multiple slats,
A frame that rotatably supports each of the slats;
A power transmission mechanism for transmitting the driving force of the driving source to each of the blades and rotating the blades;
A damper device comprising:
The frame body has a pair of openings that are an inlet and an outlet of a fluid,
When the hollow portion communicating with the pair of openings in the frame body is used as a flow path portion of the frame body, the plurality of blades are arranged in parallel in the flow path portion,
The power transmission mechanism includes a power transmission member in which an output shaft portion is inserted into the flow path portion from a through hole formed in the frame body,
The output shaft portion includes a tip portion inserted into the flow path portion, a large diameter portion having a larger diameter than the tip portion, and a diameter of the output shaft portion from the tip portion toward the large diameter portion. An expanded diameter portion, and
The output shaft portion is supported by a retaining portion that is an edge portion of the through hole,
The shape of the surface of the retaining portion facing the output shaft portion supports the outer peripheral surface of the tip portion, and can contact at least a part of the enlarged diameter portion in the axial direction of the output shaft portion, The damper device is characterized by being formed in a shape that covers a part of the large-diameter portion on the tip end side.   The damper device according to claim 1, wherein a lubricant is filled between the output shaft portion and the retaining portion.   A gap larger than a clearance provided between the distal end portion and the retaining portion is provided between the large diameter portion of the output shaft portion and the retaining portion. The damper device according to claim 1 or 2. The expanded diameter portion is a stepped portion bent stepwise from the tip portion toward the large diameter portion,
The damper device according to any one of claims 1 to 3, wherein a corner portion between the large diameter portion and the enlarged diameter portion is rounded into a curved surface. The power transmission mechanism has a link mechanism arranged in the flow path section,
The damper device according to any one of claims 1 to 4, wherein a swing range of the link mechanism is within the flow path portion. The power transmission mechanism has a link mechanism arranged in the flow path section,
The power transmission member is a link drive member that is coupled to the link mechanism and transmits the driving force of the drive source to the link mechanism,
The frame body has a plurality of blade support portions that are support portions of the blades,
The damper device according to any one of claims 1 to 5, wherein the plurality of blade support portions and the retaining portion are integrally formed with the frame body. The power transmission mechanism has a link mechanism arranged in the flow path section,
The power transmission member is a link drive member that is coupled to the link mechanism and transmits the driving force of the drive source to the link mechanism,
When the dimension in the direction parallel to the rotation center line of each slat is the length of the slat,
The link mechanism includes a first link member connected to the link driving member, and a second link member connecting the first link member and one end in the length direction of each slat. The damper device according to any one of claims 1 to 6. The power transmission mechanism has a link mechanism arranged in the flow path section,
The power transmission member is a link drive member that is coupled to the link mechanism and transmits the driving force of the drive source to the link mechanism,
The link driving member has a gear portion and the output shaft portion,
The driving force of the driving source is transmitted to the link driving member by one or a plurality of gear members of the power transmission mechanism,
The gear portion of the link driving member and the gear member are accommodated in a gear box that is a case body constituted by the frame body and a case member fitted to the frame body,
The gear portion of the link driving member or the gear member, and the gear box have a stopper portion that abuts against each other and interrupts transmission of the driving force when the link driving member is at a predetermined angular position. The damper device according to any one of claims 1 to 7, wherein The large diameter portion of the output shaft portion extends into the gear box,
The surface of the frame constituting the inner surface of the gear box is formed with a lubricant scattering prevention portion that is a wall-like portion that covers at least a part of the outer peripheral surface of the large-diameter portion. Item 9. The damper device according to Item 8. The gear portion and the gear box of the link driving member have a stopper portion that abuts against each other and interrupts transmission of the driving force when the link driving member is at a predetermined angular position,
The stopper portion of the gear box is constituted by a raised portion protruding from a surface which becomes a bottom surface when the damper device is installed, of the inner surface of the gear box,
The raised portion is continuously formed from the surface of the frame body provided with the through hole,
The damper device according to claim 9, wherein the lubricant scattering prevention part is formed integrally with the raised part.   11. The damper device according to claim 10, wherein an extension length of the lubricant scattering prevention portion into the gear box is a length that does not contact the gear portion of the link driving member. The power transmission mechanism has a link mechanism arranged in the flow path section,
The power transmission member is a link drive member that is coupled to the link mechanism and transmits the driving force of the drive source to the link mechanism,
When the dimension in the direction parallel to the rotation center line of each slat is the length of the slat,
A first shaft portion that is a shaft portion protruding in the length direction is formed at both ends in the length direction of each slat,
The frame body has a plurality of blade support portions that are support portions of the blades,
The retaining portion is a bearing that rotatably supports the link driving member,
Each of the plurality of blade support portions is a bearing that rotatably supports the first shaft portion,
12. The axial hole direction of the retaining part and the axial hole direction of each slat support part extend in a straight line or in a parallel direction. The damper device described in 1. The frame body has a plurality of blade support portions that are support portions of the blades,
At both ends in the length direction of each of the slats, a first shaft part that is a shaft part that protrudes in the length direction and is supported by the slat plate support part is formed,
At one end in the length direction of each of the slats, a second shaft portion that is a shaft portion protruding in the length direction and connected to the second link member is formed,
When the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat,
The damper device according to claim 7, wherein the first shaft portion and the second shaft portion are disposed at both ends in the width direction of the blades.   The damper device according to any one of claims 1 to 13, wherein the frame body and the plurality of slats are made of the same resin material.

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