JP2007196899A - Operating device of seat and seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operating device of a seat allowing improvement of operability of height adjusting mechanism and angle adjusting mechanism and seat. <P>SOLUTION: An operating force imparting part 28 of the seat for the vehicle is provided with an operating lever 30 imparted with operating force by an operation of a seated person, a lifter plate 46 for transmitting the operating force of the operating lever 30 to the height adjusting mechanism for adjusting a height of a seat cushion, a reclining plate 38 for transmitting the operating force of the operating lever 30 to the angle adjusting mechanism for adjusting an angle of a seat back in relation to the seat cushion, and a switching mechanism 50 capable of selectively taking a state for transmitting the operating force of the operating lever 30 to the lifter plate 46 and a state for transmitting the operating force to the reclining plate 38. The switching mechanism 50 switches a first engaged state in which a switching pin 54 is engaged to an engagement groove 46B of the lifter plate 46 and a second engaged state in which the switching pin 54 is engaged to an engagement groove 38A of the reclining plate 38. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a seat operating device and a seat mounted on an automobile or the like, for example, for a passenger to be seated.

  2. Description of the Related Art A vehicle seat is known that includes an operation lever for unlocking a reclining mechanism to enable angle adjustment of a seat back and a knob for adjusting the height of a seat cushion ( For example, see Patent Document 1). The operation lever and the knob are arranged separately from each other at the outer end portion in the width direction of the sheet, so that they can be operated independently without interfering with each other.

In addition, the reclining lever can be operated in two stages, the reclining mechanism can be unlocked by the first stage operation and the seat back angle can be adjusted, and the seat back angle can be adjusted by the second stage operation. There is known a vehicle seat configured such that a height lever is pulled to raise the seat (see, for example, Patent Document 2).
JP 2001-130294 A Japanese Patent Laid-Open No. 8-26007

  However, in the former technique, since the operation lever and the knob are separately provided, it is difficult to arrange both of them at a position with good operability. On the other hand, in the latter technique, the unlocking of the seat height locking mechanism (height lever operation) cannot be performed independently from the unlocking of the reclining, which does not contribute to the improvement of operability.

  In view of the above facts, an object of the present invention is to provide a sheet operating device and a sheet that can improve the operability of the height adjusting mechanism and the angle adjusting mechanism.

  In order to achieve the above object, a seat operating device according to the first aspect of the present invention includes an operating member to which an operating force is applied by an operation by a seated person, and the height of the seat cushion is adjusted by the operating force of the operating member. A first transmission member for transmitting to a height adjustment mechanism for transmitting, and a second transmission member for transmitting an operation force of the operation member to an angle adjustment mechanism for adjusting an angle of a seat back with respect to the seat cushion A first engagement state in which the operation force of the operation member is engaged with the engaged portion of the first transmission member so that the operation force can be transmitted, and the operation member is operated on the engaged portion of the second transmission member. A switching member that can selectively take a second engagement state in which force can be transmitted, and the switching member according to a seated person's operation, the switching member is moved to the first engagement state and the second engagement state. A selection unit for selecting one of the states; Eteiru.

  In the seat operating device according to claim 1, when the operating member is operated when the switching member assumes the first engagement state by the operation (including the non-operating state) of the selection unit by the seated person, the operating force is 1 is transmitted to the height adjustment mechanism via the transmission member, and the height of the seat cushion is adjusted. On the other hand, when the operating member is operated when the switching member takes the second engaged state by the operation of the selection unit (including a state in which the seat is not operated) by the seated person, the operating force is angle-adjusted via the second transmission member. The mechanism is transmitted to the mechanism, and the angle of the seat back with respect to the seat cushion is adjusted or becomes adjustable.

  Accordingly, the height adjusting mechanism and the angle adjusting mechanism can be selectively adjusted, that is, independently, by one operation member. For this reason, compared with the structure which provided two operation parts for operating a height adjustment mechanism and an angle adjustment mechanism independently, the restrictions with respect to the arrangement | positioning and magnitude | size of an operation part by a seated person are reduced. Therefore, the degree of freedom in design can be improved. Therefore, for example, by arranging a single operation member capable of independently operating the height adjustment mechanism and the angle adjustment mechanism at a position with good operability in the seat cushion, the height adjustment mechanism and the angle adjustment mechanism are Both can be operated with good operability.

  Thus, in the seat operating device according to the first aspect, the operability of the height adjusting mechanism and the angle adjusting mechanism can be improved. In addition to the height adjustment mechanism and the angle adjustment mechanism, the operation member may be configured such that other adjustable parts can be adjusted.

  According to a second aspect of the present invention, there is provided the seat operating device according to the first aspect, wherein the operating member is applied with an operating force by rotating about a predetermined rotation axis. Each of the first transmission member and the second transmission member is a rotation member that is rotatably supported coaxially and independently of the operation member with respect to the seat cushion. Are formed as grooves that face each other and open in a side view when the operation member is not operated, and the switching member is linearly displaced according to the operation of the selection unit and enters any one of the grooves. It is configured to include joints.

  In the sheet operating device according to claim 2, for example, a groove provided in the outer peripheral portion (or inner peripheral portion) of the first transmission member and a groove portion provided in the inner peripheral portion (or outer peripheral portion) of the second transmission member. Are opened to face each other in a side view (viewed from the direction of the rotational axis), and are arranged along a radial direction passing through the rotational axis. Then, when the engaging portion of the switching member enters one of the groove portions, the rotational force of the operating member is transmitted via the engaging portion to the transmission member having the groove portion in which the engaging portion enters. Thereby, it is sufficient for the switching member to have a single engaging portion, and the operability can be improved with a simple structure.

  A sheet operating device according to a third aspect of the present invention is the sheet operating device according to the second aspect, wherein the sheet operating device is elongated in the operation direction of the selection unit, and the selection unit is provided on one end side in the longitudinal direction. The engaging portion is provided on the other end side in the longitudinal direction.

  In the sheet operating device according to the third aspect, for example, when the selection portion is pushed or pulled linearly, this linear motion is directly transmitted to the engagement portion, and the groove portion into which the engagement portion enters is switched. Since the selection part and the engaging part are directly connected by the switching member, the operability can be improved with a simpler structure.

  According to a fourth aspect of the present invention, the seat operating device according to any one of the first to third aspects is provided on a side portion of the seat cushion.

  In the sheet according to the fourth aspect, since the operation device for the sheet is provided, the operability of the height adjustment mechanism and the angle adjustment mechanism is good, and the adjustment work is easy.

  As described above, the seat operating device and the seat according to the present invention have an excellent effect that the operability of the height adjusting mechanism and the angle adjusting mechanism can be improved.

  A vehicle seat 10 as a seat according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. In addition, the arrow FR, the arrow UP, and the arrow W which are suitably described in each figure respectively indicate the forward direction (traveling direction), the upward direction, and the vehicle width direction of the automobile to which the vehicle seat 10 is applied. The front direction and the width direction coincide with the upper direction, the front direction, and the width direction of the vehicle seat 10. Hereinafter, the front-rear direction, the up-down direction, and the width direction indicate each direction based on the above-described vehicle seat (automobile).

  FIG. 5 shows a schematic overall configuration of the vehicle seat 10 in a front view. As shown in this figure, the vehicle seat 10 includes a seat cushion 12 on which an occupant of an automobile is seated, and a seat back 14 that supports the upper body of the seated occupant from behind. As shown in FIG. 7, the rear end portion of the seat cushion frame 16 constituting the seat cushion 12 and the lower end portion of the seat back frame 18 constituting the seat back 14 are relative to each other via a reclining mechanism 20 as an angle adjusting mechanism. It is connected so that the angle can be adjusted. The reclining mechanism 20 is provided at both ends in the width direction, and these reclining mechanisms 20 are interlocked by an interlocking mechanism (not shown).

  As shown in FIG. 7, the reclining mechanism 20 includes a cushion side bracket 20A fixed to the seat cushion frame 16 and a back fixed to the seat back frame 18 while being connected to the cushion side bracket 20A via a reclining shaft 20B. A lock coupling portion 20D that can adjust the relative angle of the side bracket 20C, the cushion side bracket 20A, and the back side bracket 20C around the reclining shaft 20B in multiple steps or continuously, and can be locked at an arbitrary relative angle, and the cushion The main component is a torsion spring 20E that urges the lock connecting portion 20D to the lock side that prevents relative angular displacement between the side bracket 20A and the back side bracket 20C. Further, the reclining mechanism 20 on one side in the seat width direction (for example, on the outer side in the vehicle width direction) includes a lock release arm 20F whose one end side in the longitudinal direction is coupled to the reclining shaft 20B so as to be integrally rotatable. Since the lock connecting portion 20D can have various known structures, description of the structure is omitted.

  The pair of reclining mechanisms 20 are configured to hold the seat back 14 (seat back frame 18) at an arbitrary inclination angle with respect to the seat cushion 12 (seat cushion frame 16) in the locked state of the lock connecting portion 20D. Further, when the unlocking arm 20F is rotated in the direction of arrow A shown in FIG. 6 against the urging force of the torsion spring 20E, the pair of reclining mechanisms 20 is rotated directly or by an interlocking mechanism. The movement is transmitted, and the lock state by each lock connecting portion 20D is released.

  A return spring (not shown) is disposed between the seat cushion 12 and the seat back 14. When no load is applied to the seat back 14 in the unlocked state of each reclining mechanism 20, the seat back 14 is seated. The cushion 12 is tilted forward to a predetermined position. On the other hand, when a backward load of a predetermined value or more is applied to the seat back 14 in the unlocked state of each reclining mechanism 20, the seat back 14 tilts backward with respect to the seat cushion 12. When the operating force of the unlocking arm 20F is released at an arbitrary inclination angle of the seat back 14 with respect to the seat cushion 12, the reclining mechanism 20 returns to the locked state by the urging force of the torsion spring 20E, and the seat cushion 12 The seat back 14 is held at an inclination angle of.

  The unlocking of the reclining mechanism 20 is accomplished by transmitting an operating force from an operating lever 30 that takes a reclining selection state, which will be described later, to the unlocking arm 20F by a covered cable 40 (both described later).

  Further, the vehicle seat 10 includes a seat lifter 22 as a height adjusting mechanism as shown in FIG. The seat lifter 22 includes a pair of front and rear links 22A and 22B whose upper and lower ends are rotatably connected to the upper rail 24 and the seat cushion frame 16, respectively, and constitutes a four-bar link together with the upper rail 24 and the seat cushion frame 16. ing. The upper rail 24 is supported by a lower rail 26 (see FIG. 5) fixed to the vehicle floor so as to be slidable in the front-rear direction.

  The front and rear links 22A and 22B are arranged so as to be tilted rearward so that virtual lines connecting the upper and lower connecting portions (rotating shafts) are substantially parallel to each other. The frame 16 is configured to be moved up and down with respect to the upper rail 24. 6 indicate the lower limit position and the upper limit position of the seat cushion frame 16 (seat cushion 12) with respect to the upper rail 24, respectively.

  The seat lifter 22 includes a lifter gear 22C that is rotatably supported by the seat cushion frame 16, and a front end portion of the connection link 22D is rotatably connected to an upper portion of the rotation shaft of the lifter gear 22C. . The rear end of the connecting link 22D is rotatably connected above the connecting portion between the link 22B and the seat cushion frame 16. As a result, in the seat lifter 22, when the lifter gear 22C is rotated in the direction of arrow B, the link 22B is rotated to the upright side and the seat cushion frame 16 is displaced upward, and the lifter gear 22C is moved to an arrow opposite to the arrow B. When it is rotated in the C direction, the link 22B is rotated backward and the seat cushion frame 16 is displaced downward.

  The seat lifter 22 includes a pinion 22E meshed with a lifter gear 22C, and the pinion 22E is connected to a later-described lifter plate 46 and an operation lever 30 via a pump type lifter mechanism 22F. The pump type lifter mechanism 22F is supported by the seat cushion frame 16, and the lifter gear 22C is rotated in the arrow B direction via the pinion 22E by the rotation of the operation lever 30 in the lifter selection state, which will be described later, in the arrow D direction. The operation force is not transmitted to the pinion 22E when the operation lever 30 returns to the neutral position as the non-operation position from the rotation position to the arrow D side (hereinafter referred to as the upper operation position). .

  Similarly, the pump type lifter mechanism 22F rotates the lifter gear 22C in the direction of arrow C via the pinion 22E by the rotation of the operation lever 30 in the lifter selection state in the direction of arrow E. When returning from the pivot position (hereinafter referred to as the lower operation position) to the neutral position, the operation force is not transmitted to the pinion 22E.

  Further, the pump type lifter mechanism 22F has a brake function so that the pinion 22E is not reversed by the force from the lifter gear 22C side. The pump lifter mechanism 22F includes a biasing member that biases the operation lever 30 toward the neutral position, and does not require an operation force to return the operation lever 30 to the neutral position.

  Thus, the seat lifter 22 raises the seat cushion 12 with respect to the vehicle body floor by reciprocatingly swinging the operation lever 30 that takes the lifter selection state between the neutral position and the rotation position on the arrow D side, thereby selecting the lifter. The seat cushion 12 is lowered with respect to the vehicle body floor and the seat cushion 12 is resisted against the seating load by reciprocally swinging the operation lever 30 that takes a state between the neutral position and the rotation position on the arrow E side. It can be held at any height.

  As shown in FIG. 5, the seat cushion 12 has an end portion in the width direction (for example, the outside in the vehicle width direction) as a “seat operating device” for adjusting the reclining angle of the vehicle seat 10 and the height relative to the floor. An operating force application unit 28 is provided. The operation force applying unit 28 includes an operation lever 30 as a single operation member for independently operating the reclining mechanism 20 and the seat lifter 22. In this embodiment, the operating force application unit 28 is operably disposed at the side end of the seat cushion 12.

  As shown in FIG. 1, the operation lever 30 is elongated in the front-rear direction, and the front end side is an operation portion 30A, and the rear end side is a concave supported portion 30B that opens inward in the width direction. Has been. The operation unit 30A has a shape that can be easily grasped manually.

  The operation lever 30 is supported by the supported portion 30 </ b> B so as to be coaxial with the pump lifter mechanism 22 </ b> F and rotatable independently of the seat lifter 22. Specifically, as shown in FIGS. 3 and 4, the side plate portion of the supported portion 30B is formed with a concave portion 30C that opens outward in the width direction, and the supported portion 30B is formed at the center of the concave portion 30C. A support pin 32 is slidably inserted in the circumferential direction into a shaft hole 30D penetrating the side plate portion.

  The support pin 32 has a head portion 32 </ b> A disposed in the recess 30 </ b> C and a bolt portion 32 </ b> B on the distal end side screwed into the fixing member 34. The fixing member 34 is rotatably supported by a load input portion 22G in the pump type lifter mechanism 22F. Thereby, the operation lever 30 is supported via the support pin 32, the fixing member 34, and the pump type lifter mechanism 22F so as to be rotatable relative to the seat cushion frame 16. Further, a cover member 36 is fitted into the opening end of the recessed portion 30C in the supported portion 30B of the operation lever 30 to close the recessed portion 30C.

  The support pin 32 pivotally supports a reclining plate 38 as a second transmission member so as to be rotatable about its own axis. The reclining plate 38 is formed in a substantially disk shape supported by the support pin 32 at the axial center thereof, and slides between the step portion 32 </ b> C formed in the intermediate portion of the support pin 32 and the fixing member 34. The positional deviation in the width direction is regulated by being sandwiched as much as possible.

  The reclining plate 38 is connected to the distal end side of the unlocking arm 20F via the covered cable 40 so as to be able to transmit an operating force. Specifically, the covered cable 40 includes a cable 40A and a cover 40B that covers the cable 40A. Then, at the rear lower part of the reclining plate 38 (as will be described later, when the reclining plate 38 is rotated by a predetermined amount in the direction of the arrow F), one end is on the distal end side of the unlocking arm 20F. The other end of the locked 40A is locked.

  In addition, one end of the covering 40B is fixed to a cable fixing bracket (not shown) fixed to the seat cushion frame 16 in the vicinity of the reclining mechanism 20, and the other end is in the vicinity of the reclining plate 38 (rear part of the operation lever 30). The cable fixing bracket 44 is fixed to the seat cushion frame 16. As a result, the operating force applying unit 28 rotates the reclining plate 38 in the direction of arrow F shown in FIG. 1, whereby the cable 40A is pulled forward, and the unlocking arm 20F rotates in the direction of arrow A. The mechanism 20 is configured to release the locked state.

  The covered cable 40 connects the unlocking arm 20F and the reclining plate 38 through a window 30H formed to open rearward in the supported portion 30B. The reclining mechanism 20 and the covered cable 40 are covered from the outside in the width direction by a cover member 42 shown in FIG. Further, the reclining plate 38 is engaged with a stopper (not shown) in the rotation limit in the rotation direction opposite to the arrow F direction, and further rotation in the opposite direction to the arrow F direction is restricted. The stopper is immovable with respect to the seat cushion frame 16 and is provided, for example, on the seat cushion frame 16 or the cover member 42. The reclining plate 38 is biased toward the contact side with the stopper by an urging force of a return spring (not shown) or an urging force of a torsion spring 20E transmitted through the cable 40A.

  On the other hand, a lifter plate 46 as a first transmission member formed in a ring plate shape is fixed to the load input portion 22G of the pump type lifter mechanism 22F. The lifter plate 46 is coaxially fixed to the load input portion 22G by screws 48 in a plurality (two in this embodiment) of mounting pieces 46A projecting radially inward from the inner edge portion, and the load input portion 22G And rotate together. Therefore, the operation force applying unit 28 is configured to operate the sheet lifter 22 by rotating the lifter plate 46 in the direction of arrow D or arrow E.

  As shown in FIGS. 3 and 4, the reclining plate 38 and the lifter plate 46 are accommodated in the supported portion 30 </ b> B of the operation lever 30. Further, as shown in FIGS. 1 and 3, the inner diameter of the lifter plate 46 outside the installation portion of the mounting piece 46 </ b> A is larger than the outer diameter of the reclining plate 38.

  As shown in FIG. 1, the operation force applying unit 28 transmits the operation force of the operation lever 30 by the seated person to the reclining mechanism 20 through the reclining plate 38 and the seat lifter 22 through the lifter plate 46. The switching mechanism 50 which switches to the state which transmits to is provided.

  As shown in FIG. 1, the switching mechanism 50 includes an engagement groove 38 </ b> A as an engaged portion or a groove portion provided to open rearwardly on an outer peripheral portion which is a rear end in a non-operating state of the reclining plate 38, a lifter In the non-operating state of the plate 46, an engagement groove 46B serving as an engaged portion or a groove portion provided to open forward is provided in an inner peripheral portion which is a rear end. The engaging groove 38A and the engaging groove 46B are arranged on a straight line along the front-rear direction (the radial direction of each other) so as to open facing each other in a side view.

  The switching mechanism 50 is a switching member that is elongated along the longitudinal direction of the operation lever 30 and is disposed in the operation lever 30 so as to rotate around the support pin 32 integrally with the operation lever 30. The switch plate 52 is provided. Specifically, as shown in FIGS. 3 and 4, the switch plate 52 can be relatively displaced in the longitudinal (front-rear) direction with respect to the operation lever 30 by a guide portion 30 </ b> E formed integrally with the operation lever 30, and the other. It is supported so that relative displacement in the direction (including angular displacement) is regulated, and is positioned outside the reclining plate 38 and the lifter plate 46 in the sheet width direction. The switch plate 52 has a configuration in which the support pin 32 is inserted into a long hole 52A that is formed in the front-rear direction on the rear end side so that sliding in the front-rear direction with respect to the operation lever 30 is allowed.

  From the rear end of the switch plate 52, a switching pin 54 as an engaging portion projects inward in the width direction. The switching pin 54 is engaged in a reclining selection state in which the switch plate 52 enters the engagement groove 38A as shown in FIG. 2 (A) by relative displacement along the longitudinal direction of the switch plate 52 with respect to the operation lever 30, and as shown in FIG. 2 (B). It is configured to switch between the lifter selection state entering the joint groove 46B. That is, the switching pin 54 has a function of transmitting the operation force generated by the rotation of the operation lever 30 around the support pin 32 as the rotation force in the direction of the arrow F or arrow D or arrow E of the reclining plate 38 or the lifter plate 46. Has been.

  On the other hand, a switching knob 56 as a selection portion protruding forward from the front end of the operation lever 30 is attached to the front end of the switch plate 52. When the seated person operates the switching knob 56 in the front-rear direction, the reclining selection state and the lifter selection state are switched. Further, as shown in FIG. 1, a spring locking piece 52 </ b> B protrudes downward from an intermediate portion of the switch plate 52, and the front end of the spring locking piece 52 </ b> B is a spring locking piece 30 </ b> F of the operation lever 30. The rear end of the tension coil spring 58 locked to is locked.

  As a result, in the operation force applying unit 28, the switch plate 52 is urged forward by the tension coil spring 58, and the urging force is obtained by engaging the flange portion 56A of the switching knob 56 with the stopper 30G of the operation lever 30. Has come to be supported. In this state, that is, in the front side movement limit of the switch plate 52, the switching pin 54 enters the engagement groove 38A, and when the switching knob 56 is not operated, the switching pin 54 is switched to the reclining selection state. When the operation lever 30 is not operated, the reclining plate 38 is biased to contact the stopper, and the operation lever 30 connected to the reclining plate 38 via the switching pin 54 and the switch plate 52 is not operated. It is designed to be held in position.

  Further, in the operation force applying portion 28, the switching pin 54 is pushed backward (inside the operation lever 30) by a predetermined amount against the urging force of the tension coil spring 58, whereby the switching pin 54 comes out of the engaging groove 38A. The engagement groove 46B is entered, and the reclining selection state is switched to the lifter selection state. Therefore, when operating the seat lifter 22 by operating the operation lever 30, the operation lever 30 is rotated in the direction of the arrow D or the arrow E while pushing the switching knob 56 into the 30 (while maintaining the pushed state). It becomes.

  Next, the operation of the embodiment will be described.

  In the vehicle seat 10 having the above-described configuration, when the seated person adjusts the seating height in the direction of increasing the seating height, the seated person holds the operation portion 30A of the operation lever 30 and holds the switching knob 56 with a thumb or the like. While pushing into the operation lever 30, that is, switching to the lifter selection state, the operation lever 30 is swung (reciprocally rotated) between the neutral position and the upper operation position. Of the operation of the operation lever 30, the operation force accompanying the operation from the neutral position to the upper operation position is transmitted to the seat lifter 22 via the switching pin 54 and the lifter plate 46 that have entered the engagement groove 46B, and the seat cushion 12, that is, the vehicle The working sheet 10 is displaced upward as a whole. When the operation of the operation lever 30 is stopped at a desired height, the height of the seat cushion 12 is maintained at the adjusted height by the seat lifter 22.

  Similarly, when the seated person adjusts the seating height to be lowered, the seated person grips the operating portion 30A of the operating lever 30 and pushes the switching knob 56 into the operating lever 30 with a thumb or the like, for example. That is, switching to the lifter selection state, the operation lever 30 is swung (reciprocated) between the neutral position and the lower operation position. Of the operation of the operation lever 30, the operation force accompanying the operation from the neutral position to the lower operation position is transmitted to the seat lifter 22 via the switching pin 54 and the lifter plate 46 that enter the engagement groove 46 </ b> B. The working sheet 10 is displaced downward as a whole. When the operation of the operation lever 30 is stopped at a desired height, the height of the seat cushion 12 is maintained at the adjusted height by the seat lifter 22.

  On the other hand, when the seat occupant adjusts the angle of the seat back 14 with respect to the seat cushion 12, the seat occupant does not operate the switching knob 56, that is, in the reclining selection state, the finger is applied to the operation portion 30A of the operation lever 30. Or gripping the operation unit 30A, and pulling the operation unit 30A upward to operate the operation lever 30 from the reclining non-operation position to the reclining operation position. Then, the reclining plate 38 that receives the operation force of the operation lever 30 from the switching pin 54 that has entered the engagement groove 38A rotates in the direction of arrow F, and the cable 40A that is relatively displaced with respect to the covering 40B moves the lock release arm 20F through the arrow. The reclining mechanism 20 is unlocked by rotating to the A side.

  The seated person puts his / her weight on the seat back 14 and tilts the seat back 14 backward to stop it as desired, or stops the seat back 14 standing up by the urging force of the return spring at a desired position. When the seated person releases the operation force from the operation lever 30, the reclining mechanism 20 returns to the locked state and the operation lever 30 returns to the non-operation position by the urging force of the torsion spring 20E.

  Here, in the vehicle seat 10, the reclining mechanism 20 and the seat lifter 22 can be independently operated (adjusted) and adjusted by a single operation lever 30, so that a position with good operability for the seated person is achieved. Thus, the operation lever 30 is arranged on the front, and the operability of the reclining mechanism 20 and the seat lifter 22 is achieved.

  This will be described in comparison with the comparative example shown in FIG. 8. In the seat 200 according to the comparative example, the lifter knob 202 for adjusting the seat height and the reclining lever 204 for releasing the reclining lock are independent of each other. The operated parts 202A and 204A by the seated person are arranged so as to be largely separated so as to be operated. For this reason, it is necessary to secure the minimum necessary dimensions and an independent operation space for each of the adjustment lifter knob 202 and the reclining lever 204, and there are large restrictions on the dimensional shape and arrangement of the lifter knob 202 and the reclining lever 204. . Specifically, in the seat 200, only one of the operated parts 202A and 204A can be disposed at a position where the seated person has good operability. In this comparative example, the reclining lever 204 is positioned at the position. Since it is the rear part of the seat, it is difficult to reach the hand, and there is a possibility that the hand may interfere with the seat belt device 206 (buckle locking part) or the like during operation. In addition, since the lifter knob 202 and the reclining lever 204 are both limited to have short arm lengths (front and rear lengths), there is a limit in reducing the operation force. Furthermore, since priority is given to ensuring each function within the above-described restrictions of the lifter knob 202 and the reclining lever 204, the seat 200 has a low degree of design and design freedom.

  As described above, in the vehicle seat, the range of good operability for the seated person is limited. However, in the vehicle seat 10, since the operation lever 30 is shared by the reclining mechanism 20 and the seat lifter 22, the operation lever The restrictions on the arrangement and size of 30 were reduced, and the degree of freedom in design was improved. Specifically, the operability of the reclining mechanism 20 and the seat lifter 22 is ensured and improved by arranging the single operation lever 30 at an appropriate position that avoids interference with the seat belt device and the like and is easily reachable by fingers. Further, since the operation lever 30 has a high degree of freedom in setting the arm length, the operation force and the operation stroke can be easily and appropriately set.

  Thus, the operability of the reclining mechanism 20 and the seat lifter 22 can be improved in the vehicle seat 10 including the operation force applying unit 28 according to the embodiment of the present invention.

  Further, since the vehicle seat 10 is configured to switch the mechanism to which the operating force of the operating lever 30 is transmitted by the switching mechanism 50, the operating direction of the operating lever 30 is adjusted when the reclining mechanism 20 is adjusted and the seat lifter 22 is adjusted. In any case, both the reclining mechanism 20 and the seat lifter 22 are in the direction of rotation around the support pin 32 that displaces the front end of the operation portion 30A in the vertical direction, and does not give the operator (sitting person) a sense of incongruity. Can be operated with a single operating lever 30.

  Further, in the vehicle seat 10, the reclining selection state is achieved by selectively inserting a single (common) switching pin 54 into one of the engagement groove 38 </ b> A and the engagement groove 46 </ b> B that are opened facing each other in a side view. Therefore, the switching mechanism 50 is realized with a simple structure. In particular, since the facing direction of the engaging groove 38A and the engaging groove 46B is made to coincide with the displacement direction of the switch plate 52 (the operation direction of the switching knob 56), a displacement (force) conversion mechanism is unnecessary and the switching mechanism 50 The structure is simpler.

  In the above-described embodiment, an example in which the operation lever 30 is rotatable around the axis line (pump type lifter mechanism 22F) along the sheet width direction is shown, but the present invention is not limited to this, and for example, the operation lever 30 The reclining mechanism 20 and the seat lifter 22 may be operated and adjusted by turning the lever 30 around the axis along the front-rear direction.

  Moreover, in the said embodiment, although the ring-shaped lifter plate 46 was shown as a 1st transmission member, and the disc-shaped reclining plate 38 was shown as a 2nd transmission member, this invention is not limited to this, For example, Instead of these transmission members, a disc-shaped lifter plate and a ring-shaped reclining plate having an inner diameter larger than the outer diameter of the lifter plate may be employed.

  Furthermore, in the said embodiment, although the example to which this invention was applied as the vehicle seat 10 was shown, this invention is not limited to this, It is also possible to apply to various vehicle seats, an easy chair, an office chair, etc. It is.

It is a sectional side view of the operation force provision part of the vehicle seat which concerns on embodiment of this invention. It is a figure which shows the operation force provision part of the vehicle seat which concerns on embodiment of this invention, Comprising: (A) is a sectional side view of a reclining selection state, (B) is a sectional side view of a lifter selection state. It is a plane sectional view of the operation force grant part of the vehicular seat concerning the embodiment of the present invention. It is a back sectional view of the operation force grant part of the vehicular seat concerning the embodiment of the present invention. 1 is a perspective view showing an overall configuration of a vehicle seat according to an embodiment of the present invention. It is a side view which shows the seat lifter which comprises the vehicle seat which concerns on embodiment of this invention. It is a side view which shows the reclining mechanism which comprises the vehicle seat which concerns on embodiment of this invention. It is a side view which shows the sheet | seat which concerns on the comparative example with the vehicle seat which concerns on embodiment of this invention.

Explanation of symbols

10 Vehicle seat (seat)
12 Seat cushion 14 Seat back 20 Reclining mechanism (angle adjustment mechanism)
22 Sheet lifter (height adjustment mechanism)
28 Operating force application unit (sheet operation device)
30 Operation lever (operation member)
38 Reclining plate (second transmission member)
38A engaging groove (engaged part, groove part)
46 Lifter plate (first transmission member)
46B engagement groove (engaged part, groove part)
52 Switch plate (switching member)
54 switching pin (engagement part)
56 Switching knob (selection part)

Claims (4)

An operation member to which an operation force is applied by an operation by a seated person;
A first transmission member for transmitting the operation force of the operation member to a height adjustment mechanism for adjusting the height of the seat cushion;
A second transmission member for transmitting an operation force of the operation member to an angle adjustment mechanism for adjusting an angle of a seat back with respect to the seat cushion;
A first engagement state in which the operation force of the operation member is engaged with the engaged portion of the first transmission member so that the operation force can be transmitted, and the operation force of the operation member is applied to the engaged portion of the second transmission member. A switching member that can selectively take a second engagement state that engages in a transmittable manner;
A selection unit that switches the switching member to one of the first engagement state and the second engagement state in response to a seated person's operation;
A device for operating a sheet. The operation member is configured to be provided with an operation force by rotating around a predetermined rotation axis.
Each of the first transmission member and the second transmission member is a rotation member that is rotatably supported coaxially and independently of the operation member with respect to the seat cushion. It is a groove portion that opens facing each other in a side view in a non-operation state of the operation member,
2. The seat operating device according to claim 1, wherein the switching member includes an engaging portion that is linearly displaced according to an operation of the selection portion and enters one of the groove portions.   The switching member is configured to be long in an operation direction of the selection unit, the selection unit is provided on one end side in the longitudinal direction, and the engagement unit is provided on the other end side in the longitudinal direction. 3. The sheet operating device according to 2.   A seat, wherein the seat operating device according to any one of claims 1 to 3 is provided on a side portion of the seat cushion.

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