JP2023067264A - Operation control device - Google Patents

Abstract

To reduce the size of a device for unlocking/locking a plurality of mechanisms.SOLUTION: In an operation control device 30, a first operation wire 26 for unlocking/locking a sliding mechanism and a second operation wire 28 for unlocking/unlocking a reclining mechanism are connected to a pulley 48. When the pulley 48 is forwardly and reversely rotated by a motor 46, a control unit 42 moves the first operation wire 26 and the second operation wire 28 by rotation of the pulley 48 from an initial position toward an unlocking position and rotation from the unlocking position toward the initial position in a forward rotation direction and a reverse rotation direction. This can achieve a reduced size of an operation control device 30 which performs unlocking/locking.SELECTED DRAWING: Figure 3

Description

The present invention relates to an operation control device for a vehicle seat.

The operation module of the vehicle seat disclosed in Patent Document 1 is provided with a transmission member that is rotated by the operation of the actuator, and the transmission member is connected to one end of a first drive cable and a second drive cable. It is The transmission member has a rotational direction for driving the first drive cable from the first locked position to the first unlocked position and a second drive cable from the second locked position to the second unlocked position. It is driven in a second rotational direction opposite to the first rotational direction for positioning.

Also, the first drive cable and the second drive cable are connected to a seat element moving mechanism such as a reclining mechanism and a sliding mechanism of the vehicle seat, respectively. The actuation module includes an actuator rotating the transmission member to a first drive cable unlocked position, thereby unlocking the seat element to which the first drive cable is coupled, and wherein the actuator rotates the transmission member to the second drive cable. Rotation to the unlocked position of the cable unlocks the seat element to which the second drive cable is connected.

U.S. Pat. No. 10,232,745

By the way, in the actuation module of Patent Document 1, a spring-back mechanism using, for example, a spiral spring is attached to the transmission member, and the spring-back mechanism is such that the first drive cable arranged at the unlocked position moves to the locked position. and rotate the transmission member such that the second drive cable located in the unlocked position is located in the locked position.

Therefore, in the actuation module, a large elastic force (biasing force) is required for the springback mechanism in order to rotate the transmission member and the actuator to which the transmission member is connected, and the actuator resists the elastic force of the springback function. Therefore, a driving force is required to rotate the transmission member, resulting in an increase in the size of the device.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an operation control device that can be used in a vehicle seat or the like and that can be downsized.

In order to achieve the above object, an operation control device according to claim 1 of the present invention is connected to a first displacement mechanism that performs locking that limits displacement of the first element and unlocking that allows displacement, and It is connected to a first transmission member that moves in the locking direction and the unlocking direction of the first displacement mechanism, and to a second displacement mechanism that performs locking that limits the displacement of the second element and unlocking that allows the displacement of the second element. a second transmission member that moves in the locking direction and the unlocking direction of the displacement mechanism; and the first transmission member that is operated in the first direction from the initial position to move the first transmission member in the unlocking direction of the first displacement mechanism. , the first transmission member is moved in the locking direction of the first displacement mechanism by being operated in a second direction opposite to the first direction toward the initial position, and the second transmission member is moved from the initial position to the second transmission member. By being operated in the direction, the second transmission member is moved in the unlocking direction of the second displacement mechanism, and by being operated in the first direction toward the initial position, the second transmission member is moved to the an operating member for moving the second displacement mechanism in the locking direction; an actuator for operating the operating member in the first direction and the second direction; and controlling the operation of the actuator to move the operating member in the first direction and the second direction. and an operation control means operable to move in the second direction.

In the operation control device according to claim 1, the first displacement mechanism locks and unlocks the displacement of the first element, and the second displacement mechanism locks and restricts the displacement of the second element. and unlocking to allow displacement. A first transmission member is connected to the first displacement mechanism, and when the first transmission member is moved in the unlocking direction, the first displacement mechanism is unlocked, and the first transmission member is moved in the locking direction. , the first displacement mechanism is locked. A second transmission member is connected to the second displacement mechanism, and when the second transmission member is moved in the unlocking direction, the second displacement mechanism is unlocked, and the second transmission member is moved in the locking direction. By doing so, the second displacement mechanism is locked.

In the operation control device, at least the first displacement mechanism and the second displacement mechanism are different, and the first transmission member connected to the first displacement mechanism and the second transmission member connected to the second displacement mechanism are different. In addition, in the operation control device, for example, the seat element using the first element and the second element may be different, such as a seat cushion and a seat back, or the seat cushion or the seat back may be used as the first element and the second element. may be used. In the latter case, at least the direction of displacement and the state of displacement should be different. The first transmission member and the second transmission member are connected to an actuating member, and the actuating member is operated in a first direction and a second direction opposite to the first direction by an actuator operated by the operation control means.

Here, the operating member is operated in the first direction from the initial position to move the first transmission member in the unlocking direction of the first displacement mechanism, and is operated in the second direction toward the initial position. , to move the first transmission member in the locking direction of the first displacement mechanism. Further, the operating member is operated in the second direction from the initial position to move the second transmission member in the unlocking direction of the second displacement mechanism, and is operated in the first direction toward the initial position to The second transmission member is moved in the locking direction of the second displacement mechanism.

As a result, since the first displacement mechanism and the second displacement mechanism can be locked and unlocked by the actuator, the structure for locking and unlocking the first displacement mechanism and the second displacement mechanism can be simplified, so that the size of the device can be reduced. can be

The operation control device according to claim 2 is the operation control device according to claim 1, wherein the first operation switch is operated when unlocking the first displacement mechanism and the second operation switch is operated when unlocking the second displacement mechanism. A second operation switch is provided, and the operation control means operates such that when the first operation switch is turned on when the actuator is operated, the operating member moves from the initial position in the first direction. and turning the first operation switch from ON to OFF, thereby causing the operating member to move in the second direction toward the initial position, and turning the second operation switch ON. to move the actuating member from the initial position in the second direction, and the second operation switch is turned off from the ON operation, so that the actuating member moves toward the initial position in the first direction. Operate to move in a direction.

The operation control device according to claim 2 comprises a first operation switch that is operated when unlocking the first displacement mechanism and a second operation switch that is operated when unlocking the second displacement mechanism. Further, the operation control means operates the actuator according to the operation of the first operation switch and the second operation switch.

Here, the operation control means operates the actuator so that the operating member moves in the first direction from the initial position when the first operation switch is turned on, and the first operation switch is turned off from the on operation. This causes the actuator to move such that the actuating member moves in the second direction toward the initial position. Further, the operation control means operates the actuator so that the operating member moves in the second direction from the initial position when the second operation switch is turned on, and the second operation switch is turned off from the on operation. and operating the actuator to move the actuating member in the first direction toward the initial position.

This makes it possible to smoothly unlock and lock each of the first displacement mechanism and the second displacement mechanism using one actuator.

According to claim 3, the operation control device according to claim 1 or claim 2, wherein the operating member is a rotary member that rotates around a rotation center.

In the operation control device according to claim 3, a rotating member that rotates around the center of rotation is used as the operating member. As a result, it is possible to suppress the movement range of the operating member from widening and to reduce the size.

Claim 4 is the operation control device according to any one of Claims 1 to 3, further comprising: the initial position of the operating member; the moving position of the operating member corresponding to unlocking of the first displacement mechanism; detection means for detecting each of the movement positions of the actuating member corresponding to unlocking of the second displacement mechanism;

In the operation control device of claim 4, the detecting means detects the initial position of the operating member, the moving position of the operating member corresponding to unlocking of the first displacement mechanism, and the moving position of the operating member corresponding to unlocking of the second displacement mechanism. to detect each of the Thereby, locking and unlocking can be performed smoothly.

The operation control device according to claim 5 is the operation control device according to claim 4, wherein the detection means detects, in the operating member, the initial position, the moving position corresponding to unlocking of the first displacement mechanism of the operating member, and the operating member. A detected portion is formed to enable detection of each of the movement positions corresponding to the unlocking of the second displacement mechanism.

In the operation control device according to claim 5, the actuating member is provided with the detected portion. This makes it possible to easily detect the initial position of the operating member, the moving position of the operating member corresponding to unlocking of the first displacement mechanism, and the moving position of the operating member corresponding to unlocking of the second displacement mechanism.

Claim 6 is the operation control device according to any one of Claims 1 to 5, wherein the seating posture of a seated occupant can be changed by respectively displacing the first element and the second element. a first sheet element and a second sheet element.

In the operation control device of claim 6, it is possible to lock and unlock the first seat element and the second seat element that can change the seating posture of a seated occupant. The configuration for locking and unlocking of the can be miniaturized.

As described above, according to the operation control device of the present invention, each of the first displacement mechanism and the second displacement mechanism is selectively locked by moving the operating member in the first direction and the second direction with reference to the initial position. Since unlocking and locking can be performed, there is an effect that the structure for unlocking and locking can be miniaturized.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows the outline of the vehicle seat which concerns on this embodiment. 1 is a perspective view showing a schematic configuration of an operation control device; FIG. FIG. 3 is an exploded perspective view of the main parts of the operation control device; 4 is a plan view of the main part of the operation control device; FIG. 4 is a circuit diagram showing main parts of a control unit; FIG. (A) to (C) are plan views each showing the main part of the operation control device, (A) showing the initial position of the pulley, (B) showing the rotation state of the pulley in the forward rotation direction, (C) shows the state rotated in the normal direction to the unlocked position. (A) to (C) are plan views respectively showing the main parts of the operation control device, (A) showing the initial position of the pulley, (B) showing the state of rotation in the reverse direction, and (C) indicates a state rotated in the reverse direction to the unlocked position. 4 is a timing chart of the control section showing unlocking/locking of the slide mechanism; 4 is a timing chart of the control section showing unlocking/locking of the reclining mechanism.

An example of an embodiment of the present invention will be described in detail below with reference to the drawings.
FIG. 1 shows a schematic side view of a vehicle seat 10 according to this embodiment as viewed in the vehicle width direction. In each figure, the front side of the vehicle (the front side in the front-rear direction) is indicated by an arrow FR, and the upper side (the upper side in the vertical direction) is indicated by an arrow UP. Further, in the following description, a direction intersecting (perpendicular to) the longitudinal direction and the vertical direction of the vehicle is referred to as the vehicle width direction.

As shown in FIG. 1, a vehicle seat 10 according to the present embodiment is arranged in the front seats (driver's seat and front passenger's seat) in a passenger compartment 12 of a vehicle, and passengers are seated thereon. The vehicle seat 10 may be provided not only in the front seat but also in the rear seat. In the following description, the driver's seat and the front passenger's seat will not be distinguished.

The vehicle seat 10 includes a seat cushion 14 as one of a first seat element (displacement element, first element) and a second seat element (displacement element, second element), and a first seat element and a second seat element. A seat back 16 is provided as the other side, and a headrest 16A is attached to the seat back 16. - 特許庁Further, the vehicle seat 10 is provided with a slide mechanism (slide device) 18 as one of the first displacement mechanism and the second displacement mechanism, and a reclining mechanism (reclining mechanism) as the other of the first displacement mechanism and the second displacement mechanism. device) 20 is provided. The slide mechanism 18 is provided on the seat cushion 14 , and the reclining mechanism 20 is provided between the seat cushion 14 and the seatback 16 . Hereinafter, as an example, the slide mechanism 18 will be described as a first displacement mechanism, and the reclining mechanism 20 will be described as a second displacement mechanism.

A slide rail 22 is attached to the floor panel 12A in the vehicle compartment 12, and the vehicle seat 10 has a cushion frame (not shown) as a frame member of the seat cushion 14 attached to the slide rail 22 and extending in the vehicle front-rear direction. movably supported. When the vehicle seat 10 (seat cushion 14) is locked by the slide mechanism 18, the vehicle seat 10 is locked with respect to the slide rails 22 and its movement in the vehicle front-rear direction is restricted. When the vehicle seat 10 is unlocked (unlocked) by the slide mechanism 18, the vehicle seat 10 can be moved (displaced) in the longitudinal direction of the vehicle (see the dashed line in FIG. 1).

In the vehicle seat 10, a shaft 24 is arranged at a vehicle rear side portion of a seat cushion 14, and the shaft 24 is attached to the cushion frame with its axial direction being the vehicle width direction. The seat back 16 is rotatably supported by a shaft 24 at a lower portion of a seat back frame (not shown) as a skeleton member. As a result, the seat back 16 of the vehicle seat 10 is rotatable about the shaft 24 and tilts (displaces) in the longitudinal direction of the vehicle (reclining).

In the vehicle seat 10 , the seat back 16 is locked by the reclining mechanism 20 , thereby restricting rotation (tilting) of the seat back 16 with respect to the shaft 24 . When the vehicle seat 10 is unlocked by the reclining mechanism 20, the seat back 16 can be tilted with respect to the shaft 24 (see the two-dot chain line in FIG. 1). In addition, the slide mechanism 18 and the reclining mechanism 20 can apply a well-known structure.

One end of a first actuation wire (first unlocking wire) 26 as a first transmission member is connected to the slide mechanism 18, and a second actuation wire (second lock release wire) as a second transmission member is connected to the reclining mechanism 20. release wire) 28 is connected. The first actuating wire 26 and the second actuating wire 28 are each movable to one side (pulling side) in the axial direction and to the other side (pushing side) in the axial direction.

The slide mechanism 18 is unlocked by pulling the first actuating wire 26 (moving in the pull-out direction from the slide mechanism 18), and is locked and locked by pushing the first actuating wire 26 toward the slide mechanism 18 side. The locked state is maintained until it is released. Further, the reclining mechanism 20 is unlocked by pulling the second operating wire 28 (moving in the pull-out direction from the reclining mechanism 20), and is locked by pushing the second operating wire 28 toward the reclining mechanism 20 side. , the locked state is maintained until it is unlocked.

On the other hand, the vehicle seat 10 includes an operation control device 30 , and the operation control device 30 unlocks/locks the slide mechanism 18 and the reclining mechanism 20 . 2 shows a perspective view of the external appearance of the operation control device 30, and FIG. 3 shows an exploded perspective view of the main part of the operation control device 30. As shown in FIG. 4 shows a plan view of the main part of the operation control device 30. As shown in FIG.

As shown in FIGS. 2-4, the operation control device 30 has a casing 32 . The casing 32 has a substantially rectangular box-like shape with a hollow inside, in which a substantially rectangular box-like base body 34 and a lid body 36 each having one side open are overlapped with their open sides opposed to each other. ing.

The base 34 is formed with a substantially rectangular bottom plate 38A, side walls 38B and 38C standing on the short sides of the bottom plate 38A, and side walls 38D and 38E standing on the long sides of the bottom plate 38A. A plurality of flange portions 38F extend outward from each of the short sides of the bottom plate 38A on the base 34, and a through hole 38G is formed vertically through each of the flange portions 38F. The casing 32 is fastened and fixed to the cushion frame (or the floor panel 12A) by screwing bolts (not shown) inserted into the through holes 38G of the flange portions 38F into nuts. Note that the casing 32 may have the lid 36 on the lower side, or the base 34 and the lid 36 may be arranged to face each other in the horizontal direction.

The operation control device 30 is provided with a drive unit 40 formed in the base 34 and a control unit 42 as operation control means for controlling the operation of the drive unit 40. The control unit 42 is provided with a substrate (electric circuit substrate). ) 44 . In the operation control device 30 , the substrate 44 is arranged above the driving section 40 (on the lid body 36 side), and the driving section 40 and the substrate 44 are accommodated in the casing 32 .

The drive unit 40 includes a motor (electric motor) 46 as an actuator (driving source), a pulley 48 as an operating member and a rotating member, and a transmission unit 50 for transmitting the rotational force of the motor 46 to the pulley 48. I'm in.

The motor 46 is attached to the bottom plate 38A (and the side wall 38B) so that the axis of the drive shaft 46A is along the side wall 38B on one side wall 38B side. is installed. The worm 52 rotates (forward rotation and reverse rotation) integrally with the drive shaft 46A of the motor 46 .

The transmission unit 50 includes a two-step gear 54 and a flat gear 56. The two-step gear 54 is arranged on the motor 46 side, and the flat gear 56 is on the opposite side of the two-step gear 54 to the motor 46 (side wall 38C side). are placed in A shaft 58A is inserted through the center of the two-stage gear 54, and a shaft 58B is inserted through the center of the spur gear 56. As shown in FIG. The shafts 58A and 58B are attached to the bottom plate 38A of the base 34 and the lid 36 at both ends in the vertical axial direction. Thereby, the two-stage gear 54 and the spur gear 56 are each attached to the casing 32 and rotatably supported around the shafts 58A and 58B.

The two-stage gear 54 has a spur gear 54A on the lower side and a worm wheel (helical gear) 54B having a larger diameter than the spur gear 54A on the upper side. are united. In the two-stage gear 54, a worm wheel 54B is meshed with the worm 52, and when the worm 52 is rotated, the two-stage gear 54 (the worm wheel 54B and the spur gear 54A) is rotated.

A spur gear 56A having a diameter larger than that of the worm wheel 54B is formed on the spur gear 56, and the spur gear 56A is formed on the outer peripheral portion of the spur gear 56 in a range of approximately 3/4 of the circumference. The spur gear 56 has a spur gear 56A that meshes with the spur gear 54A of the two-stage gear 54 . A pulley 48 is arranged on the upper surface of the spur gear 56 . The pulley 48 is attached to the spur gear 56 so as to be rotatable with respect to the shaft 58B through which the shaft 58B is inserted.

As a result, in the drive unit 40, the rotation of the drive shaft 46A of the motor 46 is transmitted to the spur gear 56, and the pulley 48 is rotated together with the spur gear 56. As shown in FIG. At this time, the rotation of the drive shaft 46A of the motor 46 in one direction and the other direction causes the pulley 48 to rotate forward (clockwise when viewed from above, direction of arrow CW) and reverse rotation (rotate clockwise when viewed from above, direction of arrow CCW). be.

An initial position (original position, home position) is set for the pulley 48 and the spur gear 56 to which the pulley 48 is attached. The initial position of the pulley 48 is based on a reference line C (indicated by a dashed line in the drawing) that passes through the center of the shaft 58B (the center of rotation of the pulley 48) and is set along the non-curved side wall 38D of the base 34. , and the pulley 48 is symmetrical with respect to the reference line C. As shown in FIG. 4 shows the pulley 48 and spur gear 56 in their initial positions.

A spur gear 56A is formed in the spur gear 56 so that the same angular range is formed on one side and the other side in the circumferential direction of the spur gear 56 centering on the reference line C at the initial position. A guide groove 60 is formed in the outer peripheral surface of the pulley 48 on the side opposite to the spur gear 56A (side wall 38C of the base body 34) across the shaft 58B. is formed over a range of approximately 1/4 circumference (a range of approximately half circumference as a whole) on each of one side and the other side of the pulley 48 in the circumferential direction.

On the other hand, the pulley 48 is connected with the first operating wire 26 and the second operating wire 28 . The other ends of the first operating wire 26 and the second operating wire 28 are connected to the slide mechanism 18 and the reclining mechanism 20, respectively. Two wire holders 62 are attached to the side wall 38C of the base 34 . The first operating wire 26 is inserted through one of the wire holders 62 and supported so as to be axially movable, and the second operating wire 28 is inserted through the other wire holder 62 and is supported so as to be axially movable. It is

A substantially cylindrical locking portion 64 is attached to the tip of each of the first operating wire 26 and the second operating wire 28 . The first operating wire 26 has its distal end side (locking portion 64 side) housed in the guide groove 60 of the pulley 48 , and the locking portion 64 is locked to the outer peripheral portion of the pulley 48 . In addition, the second operating wire 28 has a distal end side (locking portion 64 side) on the side opposite to the first operating wire 26 across the shaft 58B (on the reference line C), which extends into the guide groove 60 of the pulley 48. The latching portion 64 is accommodated and latched to the outer peripheral portion of the pulley 48 .

Therefore, the first operating wire 26 is wound around the pulley 48 and inside the casing 32 by rotating the pulley 48 in the normal direction (rotating clockwise about the shaft 58B when viewed from above, rotating in the direction of the arrow CW). be drawn into As a result, the first operating wire 26 is moved in the unlocking direction with respect to the slide mechanism 18, and the slide mechanism 18 is unlocked.

In addition, the first operating wire 26 is moved in a direction pushed out from the casing 32 by the pulley 48 by rotating the pulley 48 in the reverse direction (counterclockwise rotation of the shaft 58B when viewed from above, rotation in the direction of the arrow CCW). As a result, the first operating wire 26 is moved in the locking direction with respect to the slide mechanism 18, and the slide mechanism 18 is locked.

Similarly, the second operating wire 28 is wound around the pulley 48 and drawn into the casing 32 by rotating the pulley 48 in the reverse direction (rotating in the direction of the arrow CCW). As a result, the second operating wire 28 is moved in the unlocking direction with respect to the reclining mechanism 20, and the reclining mechanism 20 is unlocked.

Further, the second operating wire 28 is moved in the direction of being pushed out from the casing 32 by forward rotation of the pulley 48 (rotation in the direction of the arrow CW). Thereby, the second operating wire 28 is moved in the locking direction with respect to the reclining mechanism 20, and the reclining mechanism 20 is locked.

On the other hand, FIG. 5 is a circuit diagram showing a schematic configuration of the control section 42 formed on the substrate 44. As shown in FIG. A motor 46 is electrically connected to the substrate 44, and an operation switch 66A and an operation switch 66B as a first operation switch and a second operation switch are electrically connected.

As shown in FIG. 1, the operation switches 66A and 66B are arranged on the side surface of the seat cushion 14 in the vehicle seat 10, for example. A momentary switch is used for the operation switches 66A and 66B, and the operation switches 66A and 66B close (turn on) the contacts by being operated (for example, pressing operation) by the occupant, and release the pressing operation. The contact is opened (turned off). Note that the operation switches 66A and 66B may be arranged at a position where they can be easily operated by an occupant seated on the vehicle seat 10, not only on the side surface of the seat cushion 14, but also on the shoulder portion of the seat back 16 (e.g., the width of the vehicle). It can be placed in various parts such as the shoulder part on the inside of the direction). Further, the operation switches 66A and 66B may be arranged at positions where they can be easily operated by the passenger seated on the vehicle seat 10 respectively.

The control unit 42 also includes a plurality of limit switches (in this embodiment, four limit switches 68A, 68B, 68C, and 68D) as detection means for detecting the rotational position (rotating position) of the pulley 48. is provided. For the limit switches 68A to 68D, a contact type can be used in which pressing of the contact portion moves an internal plunger to switch the contact (open to close or close to open).

The limit switches 68A to 68D are arranged on the pulley 48 side surface of the substrate 44, and are attached to the substrate 44 with their contact portions (not shown) directed toward the pulley 48 side. Limit switches 68A to 68D are arranged on the inner peripheral side (shaft 58B side) of pulley 48 with limit switches 68C and 68D arranged radially outside of pulley 48 relative to limit switches 68C and 68D. are placed.

A concave portion 70 is formed on the upper surface of the pulley 48 to turn off the limit switches 68A to 68D (to make the contact portions non-contact), and to turn on each of the limit switches 68A to 68D at a predetermined timing. A protruding portion 72 protruding from the concave portion 70 to a predetermined height is formed on the inner side. In this embodiment, the projecting portion 72 functions as a portion to be detected. is formed with an inclined surface.

The concave portion 70 and the projecting portion 72 are formed so that each of the limit switches 68A to 68D is turned off when the pulley 48 is in its initial position.

The projecting portion 72 also has a substantially semicircular projecting portion 72A that faces the limit switches 68C and 68D, and a projecting portion 72A that extends radially outward of the pulley 48 from the projecting portion 72A and faces the limit switches 68A and 68B. A protrusion 72B is included.

The projecting portion 72A can detect whether or not the rotational position of the pulley 48 rotated in the forward direction has reached the initial position (lock position) by means of the limit switch 68C. It is formed so that it can be detected by the limit switch 68D whether or not the initial position has been reached.

The protruding portion 72B can detect by the limit switch 68B whether or not the rotation position of the pulley 48 rotated in the forward direction has reached the position corresponding to the unlocking position of the slide mechanism 18, and the pulley rotated in the reverse direction can be detected. 48 has reached a position corresponding to the unlocked position of the reclining mechanism 20 or not can be detected by the limit switch 68A.

On the other hand, as shown in FIG. 5, the control unit 42 is operated by a 12v DC power supply supplied to the board 44 from the DC power supply of the vehicle. Note that the control unit 42 is not limited to one in which each electric element (electric component) operates on a 12v power source, and may use an electric element that operates on a 5v power source or the like. In this case, the voltage of 12v may be converted into a voltage of 5v for use, and as a result, the substrate 44 can be miniaturized and the control unit 42 can be miniaturized as compared with the case of using an electric element operated by a 12v power supply. can be

The control unit 42 is provided with a voltage conversion circuit 74. The voltage conversion circuit 74 converts the voltage (12v) input from the 12v power supply line 76A into a 5v power supply voltage, and converts it to a 5v power supply line 76B. output to As a result, the controller 42 operates using the 12v power line 76A and the 5v power line 76B.

Operation switches 66A and 66B are connected to the board 44, and each of the operation switches 66A and 66B switches between the 12v power supply (VB) side and the ground (GND) side. As a result, one of the operation switches 66A and 66B is operated (turned on), and a voltage of 12v is applied to the substrate 44 .

The substrate 44 is provided with a pair of relays (relays) 78A, 78B and a pair of MOSFETs 80A, 80B. The operation switch 66A is connected to one contact of a relay 78A, and the other contact of the relay 78A is connected to the drain D of the MOSFET 80A. The source S of the MOSFET 80A is connected to the 12v power supply line 76A. Similarly, the operation switch 66B is connected to one contact of a relay 78B, and the other contact of the relay 78B is connected to the drain D of the MOSFET 80B. The source S of the MOSFET 80B is connected to the 12v power supply line 76A.

A motor 46 is connected between the drain D of the MOSFET 80A and the drain D of the MOSFET 80B. As a result, in the motor 46, the polarity of the voltage applied when the 12v driving power source is turned on and off is switched according to the operating states of the operating switches 66A and 66B and the operating states of the MOSFETs 80A and 80B. The motor 46 is switched between stop, forward rotation and reverse rotation.

Further, the control unit 42 includes a comparator (comparator) 82A, a latch circuit (SR latch circuit) 84A, an inverter 86A, a switch circuit 88A using a transistor, and a voltage of 12v to a voltage of 5v on the side of the MOSFET 80A. A step-down circuit 90 is provided. Further, limit switches 68A and 68C are connected to the MOSFET 80A side.

The limit switch 68C is connected to the + terminal of the comparator 82A, and the operation switch 66B is connected to the - terminal of the comparator 82A through the step-down circuit 90. FIG. The limit switch 68C is connected to the S (set) terminal of the latch circuit 84A through an inverter 86A, and the limit switch 68A is connected to the R (reset) terminal of the latch circuit 84A. The output terminal Q of the latch circuit 84A is connected to the coil 92A of the relay 78A.

For example, an npn-type transistor is used for the switch circuit 88A, and the collector C of the transistor is a 12 V power supply line 76A (not shown, a voltage corresponding to the voltage of the coil 92A of the relay 78A, or a 5 V power supply line 76B may be used). , and emitter E is connected to coil 92A of relay 78A. Also, the base B of the transistor is connected to the output terminal Q of the latch circuit 84A.

As a result, the switch circuit 88A is turned off when the output of the output terminal Q of the latch circuit 84A is at Low level, and the relay 78A is turned off (contact is opened). The switch circuit 88A is turned on when the output of the output terminal Q of the latch circuit 84A is at a high level to turn on the relay 78A (close the contact).

Similarly, the controller 42 is provided with a comparator 82B, a latch circuit (SR latch circuit) 84B, an inverter 86B, a switch circuit 88B using a transistor, and a step-down circuit 90 on the MOSFET 80B side. Limit switches 68B and 68D are connected to the MOSFET 80B.

The limit switch 68D is connected to the + side terminal of the comparator 82B, and the operation switch 66A is connected to the - side terminal through the step-down circuit 90. FIG. The limit switch 68D is connected to the S (set) terminal of the latch circuit 84B via an inverter 86B, and the limit switch 68B is connected to the R (reset) terminal of the latch circuit 84B. The output terminal Q of the latch circuit 84B is connected to the coil 92B of the relay 78B.

The switch circuit 88B turns off when the output of the output terminal Q of the latch circuit 84B is at Low level, and turns off the relay 78B (contact open). Also, the switch circuit 88B is turned on when the output of the output terminal Q of the latch circuit 84B is at a high level, turning on the relay 78B (contact closed).

The operation of the operation control device 30 will be described below with reference to FIGS. 6 to 9 as the operation of this embodiment.
The vehicle seat 10 is provided with a slide mechanism 18 and a reclining mechanism 20 , the sliding mechanism 18 is connected to the operation control device 30 via a first actuation wire 26 , and the reclining mechanism 20 is connected to the second actuation wire 28 . It is connected to the operation control device 30 via.

The slide mechanism 18 is unlocked when the first operating wire 26 is pulled (moved axially to the operation control device 30 side), and the first operating wire 26 is pushed (pushed back, loosened) (slide mechanism 18 side), the locked state is established and the locked state is maintained. Similarly, the reclining mechanism 20 is unlocked by pulling the second operating wire 28 (moved axially toward the operation control device 30), and locked by pushing the second operating wire 28. state is preserved.

The operation control device 30 controls movement of the first operating wire 26 and the second operating wire 28 according to the operation of the operation switch 66A of the slide mechanism 18 and the operation switch 66B of the reclining mechanism 20 provided on the vehicle seat 10. By doing so, the slide mechanism 18 and the reclining mechanism 20 are locked/unlocked.

In the operation control device 30, the first operating wire 26 and the second operating wire 28 are connected to a pulley 48 rotated by a motor 46, and the rotation of the pulley 48 causes the first operating wire 26 and the second operating wire 28 to rotate. It is axially moved in the unlocking direction and the locking direction.

The operation control device 30 is provided with limit switches 68A to 68D facing the pulley 48. The pulley 48 has recesses 70 and projections 72 (72A, 72B) at positions corresponding to the limit switches 68A to 68D. is formed. As a result, in the operation control device 30, the limit switches 68A to 68D are turned on/off according to the rotation (rotational position) of the pulley 48. FIG. The control unit 42 rotates the motor 46 according to the operation of the operation switches 66A and 66B and the on/off of the limit switches 68A to 68D.

FIGS. 6A to 6C show plan views of the rotation state of the pulley 48 when the operation switch 66A for the slide mechanism 18 is operated, and FIGS. ) is a plan view showing the rotating state of the pulley 48 when the operation switch 66B for the reclining mechanism 20 is operated. 6(A) and 7(A) show the initial position of the pulley 48, and FIGS. 6(B) and 7(B) show the pulley 48 during rotation. (C) and FIG. 7(C) show the pulley 48 rotated to the unlocked position.

8 shows a timing chart corresponding to FIGS. 6A to 6C, and FIG. 9 shows a timing chart corresponding to FIGS. 7A to 7C. It is 8 and 9, the operation switches 66A, 66B and the limit switches 68A, 68B, 68C, 68D are referred to as SW-A, SW-B, LS-A, LS-B, LS-C, and LS-D, respectively. It is written. 8 and 9, the MOSFETs 80A, 80B, latch circuits 84A, 84B, and pulley 48 are denoted as MOSFET-A, MOSFET-B, latch circuit A, latch circuit B, and pulley, respectively.

As shown in FIGS. 6(A), 7(A), 8 and 9, in the initial position of the pulley 48, each of the limit switches 68A to 68D faces the concave portion 70 of the pulley 48, and the limit switch 68A-68D are off. Therefore, when the operation switches 66A and 66B are turned off (GND side), the motor 46 is stopped.

Here, when the operation switch 66A for the slide mechanism 18 is turned on, the operation switch 66B is turned off, so that the voltage of 12V is applied to the motor 46 with the operation switch 66A side being positive.

That is, since the limit switches 68A to 68D are turned off, the output terminals Q of the latch circuits 84A and 84B become High level, and the switch circuits 88A and 88B turn on the relays 78A and 78B. Therefore, the motor 46 operates to rotate the pulley 48 forward (rotation in the direction of the arrow CW). As a result, the pulley 48 that rotates forward pulls the first operating wire 26 connected to the slide mechanism 18 to unlock the slide mechanism 18 .

As shown in FIG. 6B, when the pulley 48 starts to rotate forward, the projecting portion 72A of the pulley 48 turns on the limit switch 68D. At this time, the driving of the motor 46 is continued because the latch circuit 84B maintains the High level output. Further, when the pulley 48 is rotated forward from the initial position, the second operating wire 28 is pushed toward the reclining mechanism 20, but since the reclining mechanism 20 is in the locked state, the reclining mechanism 20 is out of the locked state. Hold.

When the pulley 48 continues to rotate forward, the limit switch 68B comes into contact with the projecting portion 72B and is turned on (see FIG. 6(C)). When the limit switch 68B is turned on, the latch circuit 84B is reset, and by resetting the latch circuit 84B, the switch circuit 88B is turned off and the relay 78B is turned off.

As a result, the motor 46 is disconnected from the ground side and the motor 46 is stopped. By stopping the motor 46, the rotation of the pulley 48 is stopped, and the first operating wire 26 is held in the unlocked state.

On the other hand, when the sliding of the seat cushion 14 is completed and the operation switch 66A is turned off, the - side of the comparator 82B becomes Low level. At this time, since the limit switch 68D is turned on, the output of the comparator 82B becomes High level. As a result, the MOSFET 80B operates, and a voltage opposite in polarity to that when the operation switch 66A is turned on is applied to the motor 46. FIG.

As a result, the motor 46 operates to rotate the pulley 48 in the reverse direction, and the pulley 48 moves the first operating wire 26 in the pushing direction. The slide mechanism 18 is locked when the first operating wire 26 is pushed by the pulley 48 . Further, when the pulley 48 rotating in the reverse direction reaches the initial position, the limit switch 68D is separated from the projecting portion 72A and turned off. At this time, since the operation switches 66A and 66B are turned off, the motor 46 is stopped, the reverse rotation of the pulley 48 is stopped, and the pulley 48 is held at the initial position. In addition, the reverse rotation of the pulley 48 pulls the second operating wire 28, but the pulley 48 does not exceed the initial position, so the reclining mechanism 20 is not unlocked.

On the other hand, when the operation switch 66B for the reclining mechanism 20 is turned on, since the operation switch 66A is turned off, a voltage of 12V is applied to the motor 46 with the operation switch 66B side being positive.

That is, since the limit switches 68A to 68D are turned off, the output terminals Q of the latch circuits 84A and 84B become High level, and the switch circuits 88A and 88B turn on the relays 78A and 78B. Therefore, the motor 46 operates to reversely rotate the pulley 48 (rotation in the direction of the arrow CCW), and the reversely rotating pulley 48 pulls the second operating wire 28 connected to the reclining mechanism 20 . As a result, the reclining mechanism 20 is unlocked and the seat back 16 can be tilted.

Further, when the pulley 48 starts rotating in the reverse direction, the projecting portion 72A of the pulley 48 contacts the limit switch 68C to turn on the limit switch 68C (see FIG. 7B). At this time, the driving of the motor 46 is continued because the latch circuit 84A maintains the High level output. Further, since the pulley 48 rotates in the reverse direction from the initial position, the locked state of the slide mechanism 18 is maintained.

When the pulley 48 continues to rotate in the reverse direction, the limit switch 68A comes into contact with the projecting portion 72B and is turned on (see FIG. 7(C)). When the limit switch 68A is turned on, the latch circuit 84A is reset, the switch circuit 88A is turned off, and the relay 78A is turned off. As a result, the motor 46 is disconnected from the ground side and the motor 46 is stopped.

After that, when the operation switch 66B is turned off, the - side of the comparator 82A becomes Low level. At this time, since the limit switch 68C is turned on, the output of the comparator 82A becomes High level. As a result, the MOSFET 80A operates to apply a voltage to the motor 46 with a polarity opposite to that when the operation switch 66B is turned on, and the motor 46 operates to rotate the pulley 48 in the normal direction, causing the pulley 48 to rotate in the first direction. 2 Move the operating wire 28 in the pushing direction.

The reclining mechanism 20 is locked when the second operating wire 28 is pushed by the pulley 48 . Further, when the pulley 48 rotating in the normal direction reaches the initial position, the limit switch 68C separates from the projecting portion 72A and is turned off. At this time, the operation switches 66A and 66B are turned off, so that the motor 46 is stopped and the pulley 48 is held at the initial position. The forward rotation of the pulley 48 pulls the first operating wire 26, but the pulley 48 does not exceed the initial position, so the slide mechanism 18 is kept locked.

In this manner, in the operation control device 30, the motor 46 is driven to rotate the pulley 48 in the normal direction, and rotates from the initial position to the position where the slide mechanism 18 is unlocked. As a result, the slide mechanism 18 can be reliably unlocked. Further, in the operation control device 30, the motor 46 drives the pulley 48, which has been rotated to the position where the slide mechanism 18 is unlocked, and returns it to the initial position. As a result, the first operating wire 26 is pushed and the pulley 48 reaches the initial position, thereby locking the slide mechanism 18 .

In the operation control device 30, the lock of the reclining mechanism 20 can be released by rotating the pulley 48 in the reverse direction from the initial position. , the unlocked reclining mechanism 20 can be locked.

As described above, in the operation control device 30, the pulley 48 is rotated from the initial position to the position where the lock of the slide mechanism 18 is released by turning on the operation switch 66A, and the operation switch 66A that has been turned on is turned off. By doing so, the pulley 48 is returned to the initial position. In addition, in the operation control device 30, when the operation switch 66B is turned on, the pulley 48 is rotated from the initial position to the position where the reclining mechanism 20 is unlocked, and the operation switch 66B that has been turned on is turned off. By doing so, the pulley 48 is returned to the initial position.

As a result, the operation control device 30 can unlock/lock each of the slide mechanism 18 and the reclining mechanism 20 using a single motor 46 . At this time, since one motor 46 is used in the operation control device 30, the configuration for unlocking/locking each of the slide mechanism 18 and the reclining mechanism 20 can be simplified.

When unlocking and locking each of the slide mechanism 18 and the reclining mechanism 20, it becomes possible by using a plurality of actuators and biasing means. However, using a plurality of actuators and biasing means complicates the structure and increases the number of parts. Further, if the actuator for unlocking and the actuator for locking are different, the load during operation of each actuator increases, resulting in an increase in the size of the device.

On the other hand, in the operation control device 30, since one motor 46 is used, an increase in the number of parts can be suppressed, the configuration can be simplified, and the size of the device can be reduced. Moreover, since the motor 46 is only loaded by the pulley 48 to pull the first operating wire 26 or the second operating wire 28 in the unlocking direction, there is no need to increase the driving force of the motor 46, so that the device can be made more compact. can be improved.

Further, in the operation control device 30, the control section 42 can unlock/lock the seat cushion 14 and the seat back 16 of the vehicle seat 10, so that the seating posture can be easily changed. In addition, since the operation control device 30 uses forward and reverse rotations of the pulley 48, the space required for unlocking/locking can be narrowed and the size can be reduced.

Further, since the operation control device 30 detects the rotational position of the pulley 48 using the limit switches 68A to 68D, the rotational position of the pulley 48 can be easily detected. Furthermore, since the pulley 48 is formed with the projecting portions 72A and 72B, the control section 42 can accurately detect the rotation position of the pulley 48 by the limit switches 68A to 68D and drive the motor 46.

In the above-described embodiment, the sliding mechanism 18 of the seat cushion 14 and the reclining mechanism 20 of the seat back 16 in the vehicle seat 10 are described as examples. However, the first sheet element (first element) and the second sheet element (second element) are not limited to different displacement elements, but apply one displacement element, for example, the first displacement mechanism moves the displacement element up and down. Displaceable and a second displacement mechanism may displace the displacement element to one side in the horizontal direction. For example, the first displacement mechanism and the second displacement mechanism may be a combination of a slide mechanism 18 for the seat cushion 14 and a lift mechanism that allows the seat cushion 14 to move vertically. The first displacement mechanism and the second displacement mechanism include a slide mechanism 18, a reclining mechanism 20, a lift mechanism, a tilt mechanism that rotates the seat, an ottoman mechanism that supports the calves of the occupant seated on the seat, and a back surface of the occupant. A lumbar support function or the like for doing so may be applied.

Further, in the present embodiment, the pulley 48 that rotates in a circular shape has been described as an example of the operating member. However, the actuating member may also have other shapes that are rotated, such as rod-like. Further, the operation of the operating member is not limited to rotational movement, and may be reciprocating movement along one direction.

10 vehicle seat 14 seat cushion (one of first element and second element)
16 seat back (the other of the first element and the second element)
18 slide mechanism (one of the first displacement mechanism and the second displacement mechanism)
20 reclining mechanism (the other of the first displacement mechanism and the second displacement mechanism)
26 first operating wire (first transmission member)
28 second operating wire (second transmission member)
30 operation control device 42 control unit (operation control means)
46 motor (actuator)
48 pulley (operating member)
66A, 66B operation switches (first and second operation switches)
68A-68D limit switch (detection means)
72 (72A, 72B) Protruding portion (detected portion)

Claims (6)

a first transmission member coupled to a first displacement mechanism that locks to restrict displacement of the first element and unlocks to enable displacement of the first element, and is moved in a locking direction and an unlocking direction of the first displacement mechanism;
a second transmission member that is connected to a second displacement mechanism that locks and unlocks the displacement of the second element and that is moved in the locking direction and the unlocking direction of the second displacement mechanism;
Actuation in the first direction from the initial position causes the first transmission member to move in the unlocking direction of the first displacement mechanism, and toward the initial position in the second direction opposite to the first direction. is operated to move the first transmission member in the locking direction of the first displacement mechanism, and is operated in the second direction from the initial position to move the second transmission member to the position of the second displacement mechanism. an actuating member that moves in the unlocking direction and moves the second transmission member in the locking direction of the second displacement mechanism by being actuated in the first direction toward the initial position;
an actuator that actuates the actuating member in the first direction and the second direction;
operation control means for controlling the operation of the actuator to move the operating member in the first direction and the second direction;
operating controls including; A first operation switch operated when unlocking the first displacement mechanism and a second operation switch operated when unlocking the second displacement mechanism,
When the actuator is operated, the operation control means causes the operating member to move in the first direction from the initial position when the first operation switch is turned on. is turned off from on to move the actuating member toward the initial position in the second direction, and by turning on the second operation switch, the actuating member moves to the initial position. The operation member is operated to move in the second direction from the position, and the second operation switch is turned off from the ON operation, so that the operating member moves in the first direction toward the initial position. 2. The operation control device according to claim 1. 3. The operation control device according to claim 1, wherein the operating member is a rotating member that rotates around a center of rotation. Detection for detecting each of the initial position of the operating member, a moving position of the operating member corresponding to unlocking of the first displacement mechanism, and a moving position of the operating member corresponding to unlocking of the second displacement mechanism. 4. An operation control device according to any one of claims 1 to 3, comprising means. The actuating member is provided with the detecting means in which the initial position, the movement position of the actuating member corresponding to unlocking of the first displacement mechanism, and the movement position of the actuating member corresponding to unlocking of the second displacement mechanism. 5. The operation control device according to claim 4, further comprising a detection target portion capable of detecting each of the above. 6. Any one of claims 1 to 5, wherein the first element and the second element are respectively displaced to change the seating posture of a seated occupant. 3. An operation control device according to claim 1.

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