JP7032869B2 - Rope drive - Google Patents

Description

The present invention relates to a rope driving device that drives a driven body by transmitting clockwise rotation and counterclockwise rotation of an input pulley to an output pulley via a wire rope, respectively.

The rope drive device using a wire rope is, for example, an operation unit having an input pulley, an output unit having an output pulley, an outer tube arranged between the operation unit and the output unit, an input pulley and an output. It has first and second wire ropes fixed to the pulley in a tense state via an outer tube (Patent Documents 1-3). When the input pulley is rotated in the clockwise direction, the first wire rope is pulled and the output pulley is rotated in the clockwise direction to drive the driven body in the clockwise direction. On the other hand, when the input pulley is rotated in the counterclockwise direction, the second wire rope is pulled and the output pulley is rotated in the counterclockwise direction to drive the driven body in the counterclockwise direction.

In such a rope drive device, the input unit is attached to, for example, a panel of a heat control (so-called heat controller) of an automobile air conditioner, and an operation dial is attached to an input shaft fixed to an input pulley. Further, the output unit of the rope drive device is attached to the ventilation duct of the air conditioner, and the drive shaft of the opening / closing door arranged in the ventilation duct is connected to the output shaft of the output pulley.

Depending on the arrangement direction of the drive shaft, the mounting state of the open / close door to the drive shaft, etc., the torque applied to the drive shaft may be different when the open / close door is operated in the open direction and in the closed direction.

For example, in a horizontal axis configuration in which one end of an open / close door is fixed to the drive shaft and the drive shaft is arranged in the horizontal direction, when the open / close door rotates from the closed state in the vertical position to the open direction in the horizontal direction, it becomes the drive shaft. The drive torque of the open operation applied and the drive torque of the closed operation applied to the drive shaft when rotating in the closing direction are different. That is, when the input pulley of the rope drive device is rotated clockwise, for example, to rotate the opening / closing door in the opening direction, the opening / closing door rotates in the opening direction due to the weight of the opening / closing door. On the other hand, when the input pulley is rotated in the counterclockwise direction to rotate the opening / closing door in the closing direction, the opening / closing door is driven in the closing direction against the weight of the opening / closing door, so that the driving torque for closing operation is opened. It becomes larger than the driving torque of the operation.

Further, in the vertical axis configuration in which the drive shaft is arranged in the vertical direction, the drive torque is not affected by the weight of the opening / closing door even if the drive shaft is rotated in the clockwise direction or in the counterclockwise direction. It will be the same.

Japanese Unexamined Patent Publication No. 2004-210188 Japanese Patent Publication No. 2016-51261 U.S. Pat. No. 5,555,769

By the way, when the opening / closing door is opened / closed by a conventional rope drive device for the air conditioner having a horizontal axis configuration, the operation feeling when pulling the first wire rope by operating the operation dial in the clockwise direction is light and counterclockwise. The feeling of operation when pulling the second wire rope by operating in the direction is heavy. Therefore, it is desired that the same operation feeling can be obtained when pulling the first wire rope and the second wire rope, respectively, and the operation can be performed smoothly.

On the other hand, when the air conditioner having a vertical axis configuration is driven to open and close the opening / closing door by a conventional rope drive device, the operation dial is operated in the clockwise direction to pull the first wire rope and in the counterclockwise direction. The feeling of operation when pulling the second wire rope is the same. Therefore, it is desired to provide a difference in operation feeling when pulling the first wire rope and when pulling the second wire rope, and to be able to intuitively determine, for example, whether or not the operation is performed in the closing direction.

An object of the present invention is to provide a rope driving device capable of arbitrarily setting an operation feeling when driving a driven body in both rotation directions.

The first configuration of the rope drive device that realizes the object of the present invention includes an input unit that rotatably accommodates the input pulley in the input housing, an output unit that rotatably accommodates the output pulley in the output housing, and the above . A rope provided between the input housing and the output housing and having an outer tube for holding the first wire rope and the second wire rope in a tense state, which are laid between the input pulley and the output pulley. In the drive device, the width of the outer tube is formed to be smaller than the width of the input housing and the output housing, and the first wire rope is pressure-welded and slid at the connection portion between the input housing and the outer tube of the output housing. The first curved portion and the third curved portion, and the second curved portion and the fourth curved portion on which the second wire rope slides by pressure contact are provided, and the first sliding resistance of the first wire rope and the second wire are provided. In differentiating the second sliding resistance of the rope, a stranded wire of the first wire rope thinner than the stranded wire of the second wire rope was used, and the first sliding resistance of the first wire rope was set to the above. By making it larger than the second sliding resistance of the second wire rope, the driving torque thereof is different when the input pulley is operated .

The second configuration of the rope driving device that realizes the object of the present invention is that the difference between the first sliding resistance and the second sliding resistance is the diameter of the first wire rope and the second wire rope. It is characterized by being created in large and small sizes.

The third configuration of the rope drive device that realizes the object of the present invention is that the difference between the first sliding resistance and the second sliding resistance constitutes the first wire rope and the second wire rope. It is characterized by being created by the difference in the twisted structure of the stranded wire .

The fourth configuration of the rope drive device that realizes the object of the present invention is that the difference between the first sliding resistance and the second sliding resistance is that the first wire rope and the second wire rope slide. It is characterized in that it is created by the difference in the bending radius of the curved portion .

The fifth configuration of the rope driving device that realizes the object of the present invention is that in any of the second to fourth configurations described above, the first wire rope and the second wire rope are wires having a smaller diameter. The length of the rope is shorter than that of the wire rope having a larger diameter, both ends of the first wire rope and the second wire rope are fixed by fixing tools, and each fixing tool is fixed to the input pulley and the output pulley. It is characterized by having done it.

The sixth configuration of the rope drive device that realizes the object of the present invention is, in any of the above configurations, the first configuration when the driven body rotationally driven by the output pulley is driven in the first rotational direction. When the second drive torque when driven in the second rotation direction is larger than the drive torque, the second sliding resistance is smaller than the first sliding resistance.

In the seventh configuration of the rope drive device that realizes the object of the present invention, in any of the first to fifth configurations described above, the driven body driven to be rotated by the output pulley is driven in the first rotation direction. When the first drive torque at the time of being driven is equal to the second drive torque at the time of being driven in the second rotation direction, the second sliding resistance is smaller than the first sliding resistance.

The eighth configuration of the rope drive device that realizes the object of the present invention is, in any of the first to fifth configurations described above, in the driven body that is rotationally driven by the output pulley , in the first rotation direction. In order for the operator to intuitively recognize the difference between the first operation drive torque and the second operation drive torque in the second rotation direction, the second sliding resistance is made smaller than the first sliding resistance. It is characterized by that.

According to the invention of claim 1, by making the first sliding resistance of the first wire rope different from the second sliding resistance of the second wire rope, the input pulley can be moved in the first rotation direction and the second rotation direction. The operation torque for the rotation operation can be arbitrarily set, and various operation feelings can be obtained depending on the configuration, function, and the like of the driven body that is rotationally driven by the output pulley.

According to the second aspect of the present invention, the first sliding resistance and the second sliding resistance can be different from each other with a simple configuration.

According to the third aspect of the present invention, since the wire rope having a simple twisted structure has a smaller sliding resistance, a smaller operating torque can be obtained.

According to the invention of claim 4, the first sliding resistance and the second sliding resistance can be made different by adjusting the radius of the pedestal provided as the sliding mating portion on the input housing or the output housing side. In particular, the first sliding resistance and the second sliding resistance can be further made different by the combination with the first and second wire ropes having different diameters.

According to the invention of claim 5, the elongation of the first wire rope and the elongation of the second wire rope can be made equal.

According to the invention of claim 6, the operation feeling in the first rotation direction and the second rotation direction can be made equal.

According to the invention of claim 7, the operation feelings in the first rotation direction and the second rotation direction can be made different, and it is possible to intuitively recognize in which direction the driven body is rotationally driven. can.

According to the invention of claim 8, the operator is made to intuitively recognize the difference between the first operation drive torque in the first rotation direction and the second operation drive torque in the second rotation direction of the output pulley. be able to.

(A) shows a schematic front view which controls the air-conditioning apparatus of an automobile by using the 1st Embodiment of the rope drive device by this invention, and (b) shows the AA arrow view of (a). A first embodiment of the rope drive device according to the present invention is shown, and the BB arrow view of FIG. 1 (b) is shown. (A) shows a cross-sectional view of the first wire rope in the rope drive device of FIG. 2, and (b) shows a cross-sectional view of the second wire rope in the rope drive device of FIG. (A) shows a schematic top view for controlling an air conditioner of an automobile by using the second embodiment of the rope drive device according to the present invention, and (b) shows the CC arrow view of (a).

Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

1st Embodiment FIG. 1A shows a schematic front view which controls an air conditioner of an automobile by using 1st Embodiment of the rope drive device by this invention, FIG. 1B is A of FIG. 1A. -A arrow view is shown, FIG. 2 shows the first embodiment of the rope driving device according to the present invention, and FIG. 1B shows the BB arrow view of FIG. 1 (b). 3A shows a cross-sectional view of the first wire rope in the rope drive device of FIG. 2, and FIG. 3B shows a cross-sectional view of the second wire rope in the rope drive device of FIG.

In FIG. 1, the ventilation amount of the air conditioner 1 is controlled by the rope drive device 10. In the air conditioner 1, an opening / closing door 4 which is a driven body is attached to an opening 3 provided in the ventilation duct 2 so as to be openable / closable. The lower end of the opening / closing door 4 is fixed to a drive shaft 5 extending in the horizontal direction. In FIG. 1, the three axes orthogonal to each other are the X-axis, the Y-axis, and the Z-axis, the X-axis and the Y-axis are the horizontal axis, and the Z-axis is the vertical axis. The drive shaft 5 extends along the Y-axis direction. The opening / closing door 4 is between a fully closed position in a vertical posture along the Z-axis direction that covers the opening 3 by rotation of the drive shaft 5 and a fully open position in a horizontal posture along the X-axis direction that fully opens the opening 3. Can be moved. In FIG. 1A, when the opening / closing door 4 rotates clockwise from the closed position to the open position, the amount of air blown from the ventilation duct 2 into the vehicle increases.

When the opening / closing door 4 is rotated in the opening direction by turning the drive shaft 5 in the clockwise direction in the fully closed position in the vertical posture shown in FIG. Directional rotational torque is applied. Therefore, the operating torque applied to the drive shaft 5 to rotate the open / close door 4 in the opening direction can be reduced by the rotational torque.

On the other hand, when the opening / closing door 4 is rotated in the closing direction by turning the drive shaft 5 in the counterclockwise direction from the fully open position in the horizontal posture, the operating torque applied to the drive shaft 5 is counterclockwise against the weight of the opening / closing door 4. The rotational torque in the clockwise direction increases.

In FIGS. 1A and 2, the rope driving device 10 holds the wire rope arranged between the input unit 11, the output unit 12, and the input unit 11 and the output unit 12 in a tense state. It has an outer tube 13 and a wire rope unit 14. The input unit 11 is attached to a panel of a heat controller (not shown), and the output unit 12 is attached to the ventilation duct 2.

The configuration of the rope driving device 10 will be described with reference to FIG.

The wire rope unit 14 is configured by fixing both ends of the first wire rope 15 and the second wire rope 16 with the first fixing tool 17 and the second fixing tool 18.

The input portion 11 of the rope drive device 10 includes an input housing 20 having a cylindrical input pulley accommodating portion 19 having an open end side, and an input pulley 21 rotatably arranged in the input pulley accommodating portion 19. , Have. The input shaft 22 is fixed to the center of rotation of the input pulley 21. The input shaft 22 is pivotally supported by bearing holes (not shown) formed in the front wall portion (not shown) and the back wall portion 23, respectively, along the axial direction of the input housing 20. An operation dial 24 is attached to the tip of the input shaft 22.

The input housing 20 is connected to the open portion of the input pulley accommodating portion 19 to form an outer tube insertion portion 25 for inserting an outer tube having an inner width W1. One end of the outer tube 13 is inserted into the open end of the outer tube insertion portion 25 up to the step portion 26. The outer diameter (D1) of the input pulley 21 is formed to be larger than the inner width W1 of the outer tube insertion portion 25, and the inner diameter D2 of the input pulley accommodating portion 19 of the input housing 20 is larger than the outer diameter (D1) of the input pulley 21. Is also formed to a large diameter.

The input pulley accommodating portion 19 is a first curved portion 27 having a radius R1 as a first pedestal forming a sliding mating portion of the first wire rope 15 formed convexly inward from one open end 19a on the inner circumference of the inner circumference D2. Is continuously provided up to one inner end 25a of the outer tube insertion portion 25. The first wire rope 15 comes into contact with the first curved portion 27, which is the first pedestal, and is flexed. Further, a second curved portion having a radius R2 as a second pedestal forming a sliding mating portion of the second wire rope 16 formed convexly inward from the other open end 19b on the inner circumference of the inner circumference D2 of the input pulley accommodating portion 19. 28 is continuously provided up to the other inner end 25b of the outer tube insertion portion 25. The first curved portion 27 and the second curved portion 28 face each other. The second wire rope 16 comes into contact with the second curved portion 28, which is the second pedestal, and is flexed.

The input pulley 21 is provided with a first engaging portion 29 with which the first fixing tool 17 of the wire rope unit 14 is engaged. The first fixture 17 is engaged with the first engaging portion 29, and the first wire rope 15 and the second wire rope 16 are hung on the input pulley 21. In the present embodiment, the first wire rope 15 is arranged on the side that is pulled when the input pulley 21 is rotated in the clockwise direction, and the second wire rope 16 is arranged on the side that is pulled when the input pulley 21 is rotated in the counterclockwise direction. is doing. In a tense state of the wire rope unit 14, the first wire rope 15 contacts the first curved portion 27, the second wire rope 16 contacts the second curved portion 28, and is flexed and bent toward the input pulley 21. It spreads to the outside and is hung.

The output unit 12 is configured in the same manner as the input unit 11, and is rotatably arranged in the output housing 31 in which the output pulley accommodating unit 30 which is cylindrical and one end side is open is formed, and the output pulley accommodating unit 30. It has the output pulley 32 and the output pulley 32. A drive shaft 5 forming an output shaft is fixed to the center of rotation of the output pulley 32. The drive shaft 5 is pivotally supported by bearing holes (not shown) formed in the front wall portion 33a and the back wall portion 33b along the axial direction of the output housing 31, respectively.

The output housing 31 is connected to the open portion of the output pulley accommodating portion 30 to form an outer tube insertion portion 34 for inserting an outer tube having an inner width W2. The other end of the outer tube 13 is inserted into the open end of the outer tube insertion portion 34 up to the step portion 35. The outer diameter (D3) of the output pulley 32 is formed to be larger than the inner width W2 of the outer tube insertion portion 34, and the inner diameter D4 of the output pulley accommodating portion 30 of the output housing 31 is larger than the outer diameter (D3) of the output pulley 32. Is also formed to a large diameter.

The output pulley accommodating portion 30 is a third curved portion 36 having a radius R3 as a third pedestal forming a sliding mating portion of the first wire rope 15 formed convexly inward from one open end 30a on the inner circumference of the inner circumference D4. Is continuously provided up to one inner end 34a of the outer tube insertion portion 34. The first wire rope 15 comes into contact with the third curved portion 36, which is the third pedestal, and is flexed. Further, a fourth curved portion having a radius R4 as a fourth pedestal forming a sliding mating portion of the second wire rope 16 formed convexly inward from the other open end 30b of the inner circumference D4 of the output pulley accommodating portion 30. 37 is continuously provided up to the other inner end 34b of the outer tube insertion portion 34. The third curved portion 36 and the fourth curved portion 37 face each other. The second wire rope 16 comes into contact with the fourth curved portion 37, which is the fourth pedestal, and is flexed.

The output pulley 32 is provided with a second engaging portion 38 to which the second fixture 18 of the wire rope unit 14 is engaged. The second fixture 18 is engaged with the second engaging portion 38, and the first wire rope 15 and the second wire rope 16 are hung on the output pulley 32. In the present embodiment, the first wire rope 15 is arranged on the side that is pulled when the output pulley 32 is rotated in the clockwise direction, and the second wire rope 16 is arranged on the side that is pulled when the output pulley 32 is rotated in the counterclockwise direction. is doing. In a tense state of the wire rope unit 14, the first wire rope 15 contacts the third curved portion 36, the second wire rope 16 contacts the fourth curved portion 37, and is flexed toward the output pulley 32. It spreads to the outside and is hung.

In the outer tube 13, for example, the first wire rope 15 of the wire rope unit 14 is slidably inserted into the first tube portion 13b formed in the resin main body 13a into which the steel wire is inserted, and the second tube portion is formed. The second wire rope 16 is slidably inserted into the 13c. The outer tube 13 flexibly stretches between the input housing 11 and the output housing 12 to hold the tension of the first wire rope 15 and the second wire rope 16.

In the present embodiment, the outer tube 13 has a configuration in which the first tube portion 13b and the second tube portion 13c through which the first wire rope 15 and the second wire rope 16 are inserted are provided in the main body 13a. The first outer tube through which the wire rope 15 is inserted and the second outer tube through which the second wire rope 16 is inserted may be provided separately. In this case, the first outer tube and the second outer tube are mounted so as to be stretched between the input housing 20 and the output housing 31. A metal member is spirally inserted in the first outer tube and the second outer tube.

When the operation dial 24 for adjusting the air volume is rotated in the clockwise direction indicated by the arrow “strong”, the first wire rope 15 is pulled by the clockwise rotation of the input pulley 21, and the output pulley 32 rotates in the clockwise direction. By rotating the output pulley 32 in the clockwise direction, the opening / closing door 4 rotates while tilting in the clockwise direction. On the other hand, when the operation dial 24 is rotated in the counterclockwise direction indicated by the arrow “weak”, the second wire rope 16 is pulled and the output pulley 32 is rotated in the counterclockwise direction. The counterclockwise rotation of the output pulley 32 causes the opening / closing door 4 to rotate while being raised in the counterclockwise direction.

Therefore, the tensile stress applied to the second wire rope 16 is larger than the tensile stress applied to the first wire rope 15.

That is, it is not necessary to use a wire rope having the same breaking strength (tensile strength) of the first wire rope 15 and the second wire rope 16, and the tensile strength of the first wire rope 15 is higher than the tensile strength of the second wire rope 16. It will be small. Therefore, regarding the selection of the first wire rope 15, it is sufficient to satisfy the minimum necessary tensile strength.

The tensile strength of the wire rope is, for example, that the diameter (d1) of the first wire rope 15 is smaller than the diameter (d2) of the second wire rope 16 when the wire rods of the wires are made of the same material (d1 <d2). .. Conversely, the diameter (d2) of the second wire rope 16 is larger than the diameter (d1) of the first wire rope 15.

The first sliding resistance when the first wire rope 15 is pulled is R1, and the second sliding resistance when the second wire rope 16 is pulled is R2. Assuming that the first wire rope 15 and the second wire rope 16 have the same structure, the second sliding resistance R2 of the second wire rope 16 having a large diameter is the first wire rope 15 having a small diameter. It is smaller than the sliding resistance R2.

That is, in the pulling operation of the first wire rope 15, the first wire rope 15 slides in contact with the surfaces of the first curved portion 27 which is the first pedestal and the third curved portion 36 which is the third pedestal. In the pulling operation of the second wire rope 16, the second wire rope 16 slides in contact with the surfaces of the second curved portion 28, which is the second pedestal, and the fourth curved portion 37, which is the fourth pedestal. If the diameter of the wire rope is large, the contact area with the pedestal also becomes large and the surface pressure decreases. Therefore, the second sliding resistance R2 when pulling the second wire rope 16 is smaller than the first sliding resistance R1 when pulling the first wire rope 15. Conversely, the first sliding resistance R1 of the first wire rope 15 increases as the diameter becomes smaller.

In the case of the closing operation of pulling the second wire rope 16, the own weight of the opening / closing door 4 is applied, so that the drive torque (referred to as the second shaft drive torque A2) for rotationally driving the drive shaft 5 in the counterclockwise direction is the first wire. It is larger than the drive torque (referred to as the first shaft drive torque A1) for pulling the rope 15 to rotationally drive the drive shaft 5 in the clockwise direction.

Further, the drive torque for rotating the operation dial 24 in the clockwise direction (referred to as the first operation drive torque T1) includes the first shaft drive torque A1 and the first sliding torque S1 corresponding to the first sliding resistance R1. Is added (T1 = A1 + S1). Similarly, the drive torque for rotating the operation dial 24 in the counterclockwise direction (referred to as the second operation drive torque T2) includes the second shaft drive torque A2 and the second sliding according to the second sliding resistance R2. Torque S2 is applied (T2 = A2 + S2).

In the present embodiment, A1 (first shaft drive torque) <A2 (second shaft drive torque), but S1 (first sliding torque)> S2 (second sliding torque), so that the first wire By appropriately setting the diameter d1 of the rope 15 and the diameter d2 of the second wire rope 16, the first operation drive torque T1 and the second operation drive torque T2 can be made as equal as possible.

Therefore, when the operation dial 24 is rotated clockwise to drive the opening / closing door 4 in the opening direction, and conversely, when the operation dial 24 is rotated counterclockwise to rotate the opening / closing door 4 in the closing direction. It has become possible to eliminate the difference in the operation feeling of.

In order to provide a difference between the first sliding torque S1 and the second sliding torque S2, it can be set not only by the size of the diameter of the wire rope but also by the difference in the twisted structure of the wire rope. Further, it can be set by the size of the radius of the pedestal of the input / output housing on which the wire rope slides.

In the present embodiment, the first wire rope 15 uses a wire rope having a twisted structure (TB-54: manufactured by Toyoflex Co., Ltd.) shown in FIG. 3 (a), and the second wire rope 16 is shown in FIG. 3 (b). The wire rope (TG-60: manufactured by Toyoflex Co., Ltd.) having the twisted structure shown is used. The wire rope (TB-54) used for the first wire rope 15 has a wire rope diameter (d1) of 0.54 mm, a wire diameter of 0.06 mm, a breaking load of 245.3 N, and a wire wire of SUS304. Is. The wire rope (TG-60) used for the second wire rope 16 has a wire rope diameter (d2) of 0.60 mm, a wire diameter of 0.12 mm, a breaking load of 419.9 N, and a wire wire of SUS304. Is.

The first wire rope 15 has a configuration (7 × 7) in which a bundle of wire ropes 42 in which seven wires 41 are twisted is twisted in seven bundles. The second wire rope 16 has a simple structure (1 × 19) in which 19 wires 43 are twisted.

When the first wire rope 15 and the second wire rope 16 have the same outer diameter, the rope having a simple twist structure has a smaller number of wires and a larger cross-sectional diameter (radius) of one wire, so that the rope slides. It has a feature of low resistance (high slidability). The second wire rope 16 has a larger diameter of the wire rope, a larger diameter of one wire, and a simpler twisted structure as compared with the first wire rope 15. Therefore, it is possible to set a large difference between the first sliding torque S1 of the first wire rope 15 and the second sliding torque S2 of the second wire rope 16 with high accuracy.

Since the outer diameter (D1) of the input pulley 21 is larger than the inner width W1 of the outer tube insertion portion 25, the first curved portion 27 forming the pedestal by rotating the input pulley 21 in the clockwise and counterclockwise directions is the first. 1 The wire rope 15 is in sliding contact with the wire rope 15 in a flexed state. Similarly, the second wire rope 16 is slidably contacted with the second curved portion 28 forming the pedestal in a flexed state.

Similarly, since the outer diameter (D3) of the output pulley 32 is larger than the inner width W2 of the outer tube insertion portion 34, the third curved portion forming the pedestal by rotating the output pulley 32 in the clockwise and counterclockwise directions. At 36, the first wire rope 15 is in sliding contact with the first wire rope 15 in a flexed state. Similarly, the second wire rope 16 is slidably contacted with the fourth curved portion 37 forming the pedestal in a flexed state.

In the present embodiment, the radius R1 of the first curved portion 27 forming the pedestal and the radius R3 of the third curved portion 36 have the same diameter, and the radius R2 of the second curved portion 28 forming the pedestal and the radius R4 of the fourth curved portion 37. Is the same diameter, and the radius R2 (R4) is larger than the radius R1 (R3) (R2 (R4)> R1 (R3)).

The wire rope that slides into contact with the surfaces of the first curved portion 27, the second curved portion 28, the third curved portion 36, and the fourth curved portion 37 forming each pedestal in a bent state is a pedestal having a larger radius than a pedestal having a small radius. Gently slide against. Therefore, it is possible to set a large difference between the first sliding torque S1 of the first wire rope 15 and the second sliding torque S2 of the second wire rope 16 with high accuracy.

In the input housing 20, the radius R1 of the first curved portion 27 in which the first wire rope 15 bends is set to the minimum radius that can maintain durability with respect to the first wire rope 15. Further, assuming that the radius R2 of the second curved portion 28 in which the second wire rope 16 bends is the minimum radius that can maintain durability with respect to the second wire rope 16, the radius R2 is larger than the radius R1. That is, when the radius R2 of the second curved portion 28 is the same as the radius R1 of the first curved portion 27, the diameter (d2) of the second wire rope 16 is larger than the diameter (d1) of the first wire rope. Since the radius at the time of bending is small, a large stress is applied to the bending portion, and the durability is lowered when the sliding contact in the bending state is repeated. However, since the radius R2 of the second curved portion 28 is set to be larger than the radius R1 of the first curved portion 27, the radius when the second wire rope 16 bends and bends becomes large, and the second curved portion 11 has a second radius. The durability of the wire rope 16 is maintained.

In the output housing 31, the radius R3 of the third curved portion 36 is the minimum radius that can maintain durability against the first wire rope 15, and the radius R4 of the fourth curved portion 37 is the second wire, as in the input housing 20. The minimum radius that can maintain durability against the rope 16 is set. Therefore, the radius R4 of the fourth curved portion 37 in which the second wire rope 16 bends is set to be larger than the radius R3 of the third curved portion 36 in which the first wire rope 15 bends. Therefore, the durability of the second wire rope 16 is maintained in the output unit 12.

Further, since the second wire rope 16 has a simple twisted structure, it has good durability due to bending at the second curved portion 28 and the fourth curved portion 37.

In the present embodiment, the outer diameter (D1) of the input pulley 21 and the outer diameter (D3) of the output pulley 32 are the same, and the width (W1) of the outer tube insertion portion 25 and the width of the outer tube insertion portion 34 are the same. (W2) is the same width, but it is not limited to this. Further, the radius (R1) of the first curved portion 27 and the radius (R3) of the third curved portion 36 are set to the same diameter, and the radius of the second curved portion 28 (R2) and the radius of the fourth curved portion 37 (R4) are set. The diameter is the same, but the diameter is not limited to this.

Since the first wire rope 15 and the second wire rope 16 of the wire rope unit 14 have different breaking loads, the elongation amount of the first wire rope 15 is larger than the elongation amount of the second wire rope 16. Therefore, the length of the first wire rope 15 is made shorter than the length of the second wire rope 16, and both ends of each are fixed by the first fixing tool 17 and the second fixing tool 18.

Therefore, the first fixture 17 of the wire rope unit 14 is engaged with and fixed to the first fixture 29 of the input pulley 21, and the second fixture 18 is engaged with the second fixture 38 of the output pulley 32. When the first wire rope 15 and the second wire rope 16 are fixed and hung on the input pulley 21 and the output pulley 32, the tensions of the first wire rope 15 and the second wire rope 16 become equal. Therefore, the operation when the operation dial 24 is rotated in the clockwise direction to rotate the opening / closing door 4 in the opening direction, and the operation dial 24 is rotated in the counterclockwise direction to rotate the opening / closing door 4 in the closing direction. The feeling can be equalized.

Second Embodiment FIG. 4 shows a second embodiment of the present invention.

FIG. 4A shows a schematic top view of controlling an air conditioner of an automobile by using the second embodiment of the rope drive device according to the present invention, and FIG. 4B shows a view taken along the line CC of FIG. 4A. In FIG. 4, the same members as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

In the first embodiment described above, when the rope drive device 10 opens and closes the door 4 provided on the drive shaft 5 arranged in the horizontal direction of the air conditioner 1 as a driven body, the second wire rope 16 is pulled. When the first shaft drive torque A1 for rotationally driving the drive shaft 5 in the counterclockwise direction and the second shaft drive torque A2 for pulling the first wire rope 15 to rotationally drive the drive shaft 5 in the counterclockwise direction are different. Is taken as an example. Then, by providing a difference between the first sliding torque S1 and the second sliding torque S2, the first operation drive torque T1 for rotating the operation dial 24 in the clockwise direction and the operation dial 24 in the counterclockwise direction are operated. It is designed so that there is no difference from the second operation drive torque T2 that is rotated.

In the second embodiment, when the first shaft drive torque T1 and the second shaft drive torque T2 are equal, a difference is provided between the first operation drive torque T1 and the second operation drive torque T2.

The air conditioner 1 shown in FIG. 4 is arranged by rotating the air conditioner 1 shown in FIG. 1 by 90 degrees around the X axis, and has the same configuration as the air conditioner 1 shown in FIG. The drive shaft 5 extends along the Z-axis direction, which is the vertical direction. The opening / closing door 4 is driven in the opening direction by rotating the drive shaft 5 in the clockwise direction, and is driven in the closing direction by rotating the drive shaft 5 in the counterclockwise direction. Unlike the first embodiment, the first shaft drive torque A1 for rotationally driving the drive shaft 5 in the clockwise direction and the second shaft drive torque A2 for rotationally driving the drive shaft 5 in the counterclockwise direction are affected by the weight of the opening / closing door 4. Since it does not receive, it is equal (A1 = A2).

The rope driving device 10 of the present embodiment uses the rope driving device 10 shown in FIGS. 1 to 3. Therefore, since the first sliding resistance R1 of the first wire rope 15 is larger than the second sliding resistance R2 of the second wire rope 16 (R1> R2), the first sliding when pulling the first wire rope 15 The torque S1 is larger than the second sliding torque S2 when pulling the second wire rope 16 (S1> S2).

Therefore, the first operation drive torque T1 (T1 = S1 + A1) when the operation dial 24 is rotated in the clockwise direction to rotationally drive the opening / closing door 4 in the open direction is obtained by rotating the operation dial 24 in the counterclockwise direction. It is larger than the second operation drive torque T2 (T2 = S2 + A2) when the opening / closing door 4 is rotationally driven in the closing direction.

In the present embodiment, the first operation drive torque T1 when the operation dial 24 is rotated in the clockwise direction is artificially increased by increasing the second operation drive torque T2 when the operation dial 24 is rotated in the counterclockwise direction. Since it is heavy to rotate the operation dial 24 in the direction of increasing the air volume, the operator can intuitively recognize that the operation dial 24 is rotated in the direction of increasing the air volume. On the contrary, since it is light when the operation dial 24 is rotated in the counterclockwise direction, the operator can intuitively recognize that the operation dial 24 is being rotated in the air volume decreasing direction.

In each of the above-described embodiments, the air volume of the air conditioner 1 is adjusted by the operation dial 24, but when adjusting the temperature, for example, the temperature increasing side is heavy and the temperature decreasing side is lightened so that the temperature adjustment direction is set by the operator. It may be possible to recognize it sensuously.

In addition, by remotely controlling the gas heating adjustment knob with the rope drive device 10, a heavy operation feeling can be obtained in the high heat direction with high caution, and a light operation feeling can be obtained in the low heat direction with low caution. It is possible to call attention during operation.

In each of the above-described embodiments, the difference between the first sliding resistance R1 of the first wire rope 15 and the second sliding resistance R2 of the second wire rope 16 is the factor of the diameter of the wire rope and the wire rope. It is set based on all the elements of the difference in the twist structure of the wire rope and the elements of the radius of the pedestal that the wire rope contacts, but it may be set by only one element, and either two. It may be set based on the element. Further, the present invention is not limited to these three elements, and other elements that affect the sliding resistance may be used alone or in combination.

The rope drive device according to the present invention includes a window opening / closing device, a manipulator, a sliding door driving device, and a gas, in addition to the device for opening / closing the opening / closing door of the automobile air conditioner shown in the embodiment by remote control and the temperature control device. It can be used to drive the heat control knob of.

1 Air conditioner 2 Ventilation duct 3 Opening 4 Opening and closing door 5 Drive shaft 10 Rope drive device 11 Input part 12 Output part 13 Outer tube 13a Main body 13b 1st tube part 13c 2nd tube part 14 Wire rope unit 15 1st wire rope 16 2nd wire rope 17 1st fixture 18 2nd fixture 19 Input pulley accommodating part 19a One open end 19b The other open end 20 Input housing 21 Input pulley 22 Input shaft 23 Back wall part 24 Operation dial 25 Outer tube insertion Part 25a One inner end 25b The other inner end 26 Stepped part 27 First curved part 28 Second curved part 29 First engaging part 30 Output pulley accommodating part 30a One open end 30b The other open end 31 Output housing 32 Output Pulley 33a Front wall 33b Back wall 34 Outer tube insertion part 34a One inner end 34b The other inner end 35 Steps 36 Third curved 37 Fourth curved 38 Second engaging 41, 43 Wire 42 Bundled wire rope

Claims (4)

An input unit that rotatably accommodates the input pulley in the input housing, an output unit that rotatably accommodates the output pulley in the output housing, and the input pulley and the output unit provided between the input housing and the output housing. A rope driving device having a first wire rope hung between the output pulley and an outer tube for holding the second wire rope in a tense state.
The width of the outer tube is formed to be smaller than the width of the input housing and the output housing, and the first curved portion and the first curved portion in which the first wire rope is pressure-sliding to the connection portion between the input housing and the outer tube of the output housing. A third curved portion and a second curved portion and a fourth curved portion on which the second wire rope slides by pressure contact are provided.
In making the first sliding resistance of the first wire rope different from the second sliding resistance of the second wire rope,
For the stranded wire of the first wire rope, a wire thinner than the stranded wire of the second wire rope is used.
By making the first sliding resistance of the first wire rope larger than the second sliding resistance of the second wire rope, the driving torque thereof is different when the input pulley is operated. Rope drive device. The rope drive according to claim 1, wherein the difference between the first sliding resistance and the second sliding resistance is created by the size of the diameters of the first wire rope and the second wire rope. Device. The claim is characterized in that the difference between the first sliding resistance and the second sliding resistance is created by the difference in the twisted structure of the stranded wire constituting the first wire rope and the second wire rope. The rope driving device according to 1 or 2. The difference between the first sliding resistance and the second sliding resistance is characterized in that it is created by the difference in the bending radius of the curved portion on which the first wire rope and the second wire rope slide. Item 6. The rope driving device according to any one of Items 1 to 3.

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