JP2013256257A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vehicular seat allowing a plurality of adjusted mechanisms to be individually adjusted or to be put into adjustable states by one operation member, and enabled to simplify a structure for improving operability.SOLUTION: In a vehicular seat, switching members 62 are attached slidably to an operation lever 60. By appropriately switching transmission members (first transmission member 50 and second transmission member 52) that engage with the switching members 62 when the operation lever 60 is operated upward or downward, an operation force of the operation lever 60 can be transmitted to a reclining mechanism, a lifter mechanism 26, and a slide mechanism 38 individually. Moreover, the switching member 62 is urged to a non-operation position and the operation lever is urged to a neutral position by a single extension coil spring 64 extended between the switching member 62 and a seat cushion frame 16.

Description

  The present invention relates to a vehicle seat that adjusts an adjusted mechanism such as a reclining mechanism by operating an operation lever.

  Patent Document 1 below describes a sheet operating device. The operating device includes a reclining plate for transmitting an operating force of an operating lever operated by a seated person to a reclining mechanism, a lifter plate for transmitting the operating force to a pump-type lifter mechanism, and the operating force. And a switching mechanism capable of selectively taking a state transmitted to the lifter plate and a state transmitted to the reclining plate. Accordingly, the reclining mechanism and the pump type lifter mechanism can be individually (selectively) adjusted by one operation lever.

  Further, in this seat operating device, the operating lever is urged to the neutral position by the urging member provided in the pump type lifter mechanism, and the switching knob is non-rotated by the tension coil spring spanned between the operating lever and the switching knob. It is configured to bias to the operation position.

JP 2007-196899 A

  In the above-described seat operation device, the operation lever is urged to the neutral position and the switching knob is urged to the non-operation position, so that the occupant is not required to return the operation lever to the neutral position or to operate the switching knob. The trouble of returning to the position can be saved. Thereby, operability can be improved. However, since the biasing member and the tension coil spring are required, there is room for improvement in terms of simplifying the configuration.

  In consideration of the above fact, the present invention can individually adjust or adjust a plurality of adjusted mechanisms with one operating member, and can simplify the configuration for improving operability. The purpose is to obtain a vehicle seat that can be used.

  According to a first aspect of the present invention, there is provided a vehicle seat, wherein each of the vehicle seats is provided on a seat body, and is adjusted or adjustable by transmission of an operating force. A plurality of transmission members coupled to the mechanism to be adjusted and capable of transmitting an operating force to the coupled mechanism to be adjusted, and arranged to be movable with respect to the seat body, and one side of the movement range And an operation member that can be operated to the other side, and is provided so as to be movable with respect to the operation member, and is individually engageable with the plurality of transmission members and is operated by itself. A switching member that can switch the transmission member to be coupled, and the sheet main body and the switching member, and urges the switching member to a non-operation position set at one end of a movement range with respect to the operation member. With And a, and an elastic member for urging the serial operation member to the intermediate to set the neutral position of the other side to the one side.

  In the vehicle seat according to claim 1, the plurality of adjusted mechanisms provided in the seat body, the plurality of transmission members each connected to the adjusted mechanism, and the movable body are provided so as to be movable with respect to the seat body. An operation member and a switching member provided to be movable with respect to the operation member are provided. This switching member can be individually engaged with a plurality of transmission members, and the transmission member to be engaged can be switched by being operated by itself. For this reason, when operating the operating member, the operating force of the operating member can be transmitted to a desired adjusted mechanism by appropriately switching the transmission member engaged with the switching member. Thereby, it is possible to adjust or adjust a plurality of adjusted mechanisms with one operating member.

  Furthermore, in the present invention, an elastic member is stretched between the seat body and the switching member. The elastic member urges the switching member to a non-operation position set at one end of the movement range with respect to the operation member, and urges the operation member to a neutral position set in the middle of the movement range with respect to the seat body. Accordingly, it is possible to save time and effort for the occupant to return the operation lever to the neutral position and to return the switching member to the non-operation position, so that operability can be improved. Moreover, since both the operation member and the switching member are urged by a single elastic member, the configuration for improving operability can be simplified.

  A vehicle seat according to a second aspect of the present invention is the vehicle seat according to the first aspect, wherein the operation member is located at the neutral position and the switching member is located at the non-operation position. The operation member is held in the neutral position by fitting a part of the switching member into a recess provided indisplaceable with respect to the seat body.

  In the vehicle seat according to claim 2, when the operating member is returned to the neutral position by the urging force of the elastic member and the switching member is returned to the non-operating position, the switching member is disposed in the recessed portion that cannot be displaced with respect to the seat body. Part of Accordingly, since the operation member is held at the neutral position, it is possible to prevent the operation member from inadvertently rotating from the neutral position due to vibration or the like when the vehicle travels.

  A vehicle seat according to a third aspect of the present invention is the vehicle seat according to the second aspect, wherein the operating member is supported by the base portion rotatably with respect to the seat main body, and the front portion of the seat from the base portion. The elastic member has one end locked to the switching member on the front side of the seat with respect to the center of rotation of the base, and the other end from the one end. Is also locked to the seat body on the front side and the upper side of the seat.

  In the vehicle seat according to the third aspect, the operating member includes a base portion that is rotatably supported with respect to the seat body, and an arm portion that extends from the base portion toward the seat front side. For this reason, a rotational force in the direction in which the arm portion is lowered by the mass of the arm portion acts on the operation member, but the switching member attached to the operation member has an elastic member on the front side of the seat from the rotation center of the base portion. The other end portion of the elastic member is locked to the seat body on the front side of the seat and on the upper side of the seat with respect to the one end portion. Thereby, the said rotational force which acts on an operation member can be favorably supported by an elastic member. In the present invention, the other end portion of the elastic member may not be directly locked to the seat body but indirectly locked via another member.

  A vehicle seat according to a fourth aspect of the present invention is the vehicle seat according to any one of the first to third aspects, wherein the switching member is an operation side member supported by the operation member. A seat side member supported by the seat body so as to be engageable with the plurality of transmission members, the operation side member and the seat side member are detachably connected, and the seat side member The elastic member is stretched between the seat body.

  In the vehicle seat according to the fourth aspect of the present invention, since the switching member is configured as described above, when the vehicle seat is manufactured, the operation side member is operated before the operation member is assembled to the seat body. In addition to being assembled into a member and sub-assembled, the sheet side member can be assembled to the sheet main body so as to be engageable with a plurality of transmission members, and the elastic member can be stretched between the sheet side member and the sheet main body. Thereby, manufacture of a vehicle seat can be made easy.

  As described above, in the vehicle seat according to the present invention, a plurality of adjustable mechanisms can be individually adjusted or adjusted by one operating member, and the operability is improved. Can be simplified.

It is a side view which shows the structure of the principal part of the vehicle seat which concerns on embodiment of this invention. It is a disassembled perspective view which shows the structure of the seat adjustment apparatus periphery in the vehicle seat. It is a perspective view which shows the structure of the seat adjustment apparatus periphery in the vehicle seat, and is a figure where illustration of the operation lever was abbreviate | omitted. FIG. 4 is a side view showing a part of FIG. 3 as viewed from the outside in the sheet width direction, and shows a state where a switching member is located at a non-operation position. FIG. 5 is a side view corresponding to FIG. 4 and shows a state where a switching member is located at an operation position. It is a side view of the guide groove formed in the operation control part of the sheet adjusting device. It is a side view corresponding to FIG. 1 for demonstrating the condition where the lock | rock of a reclining mechanism is cancelled | released by operation to an operation lever upper side. It is a side view corresponding to FIG. 1 for demonstrating the condition where the lock | rock of a slide mechanism is cancelled | released by operation to an operation lever lower side. It is a side view corresponding to Drawing 1 for explaining the situation where a lifter mechanism is adjusted by operation up and down of an operation lever.

  Hereinafter, with reference to FIGS. 1-9, the vehicle seat 10 which concerns on embodiment of this invention is demonstrated. Note that an arrow FR appropriately shown in each drawing indicates the front of the vehicle, an arrow UP indicates the upper side of the vehicle, and an arrow IN indicates the inner side in the vehicle width direction. Further, in the present embodiment, the front direction, the upper direction, and the width direction (left-right direction) of the vehicle seat 10 coincide with the front direction, the upper direction, and the width direction (left-right direction) of the vehicle.

(Constitution)
As shown in FIG. 1, the vehicle seat 10 according to this embodiment includes a seat body 12 and a seat adjustment device 14. The seat body 12 includes a seat cushion frame 16 constituting a skeleton of the seat cushion and a seat back frame 18 constituting a skeleton of the seat back. A seat pad (not shown) is attached to each of the seat cushion frame 16 and the seat back frame 18 and the surface of each seat pad is covered with a seat skin (not shown).

  The rear end portion of the seat cushion frame 16 and the lower end portion of the seat back frame 18 are connected via a reclining mechanism 20 (first adjusted mechanism) as an angle adjusting mechanism. The reclining mechanism 20 is well known in the art, and is unlocked when the unlocking lever 22 is rotated in the unlocking direction (in the direction of arrow A in FIG. 1), so that the seat back frame 18 moves relative to the seat cushion frame 16. The relative angle (reclining angle) can be adjusted in multiple stages.

  Further, a return spring 24 that urges the seat back frame 18 in a forward tilt direction is stretched between the seat cushion frame 16 and the seat back frame 18. Therefore, when no load is applied to the seat back frame 18 in the unlocked state of the reclining mechanism 20, the seat back frame 18 tilts forward to a predetermined position with respect to the seat cushion frame 16. On the other hand, when a backward load of a predetermined value or more is applied to the seat back frame 18 in the unlocked state of the reclining mechanism 20, the seat back frame 18 tilts backward with respect to the seat cushion frame 16. When the operation force of the lock release lever 22 is released at an arbitrary inclination angle, the reclining mechanism 20 returns to the locked state, and the seat back frame 18 is restrained from being tilted.

  The seat cushion frame 16 is coupled to the lower frame 28 via a lifter mechanism 26 (second adjusted mechanism) as a height adjusting mechanism. The lifter mechanism 26 is well known in the art and includes a front link 30 and a rear link 32 (not shown except for FIG. 1) that are rotatably connected to the seat cushion frame 16 and the lower frame 28. The front link 30 and the rear link 32 together with the seat cushion frame 16 and the lower frame 28 constitute a four-bar linkage mechanism.

  The lifter mechanism 26 includes a conventionally known pump type lifter device 34 (see FIGS. 2 to 5). The pump type lifter device 34 is attached to the side surface of the seat cushion frame 16 on the outer side in the vehicle width direction, and includes an input shaft (not shown) whose axial direction is along the seat width direction. When the input shaft is rotated, the rotational force is transmitted to the rear link 32 via a pinion and a lifter gear 35 (not shown) attached to the seat cushion frame 16 (not shown). Thereby, the rear link 32 and the front link 30 are rotated, and the arrangement height of the seat cushion frame 16 with respect to the lower frame 28 is adjusted.

  As shown in FIG. 1, below the lower frame 28, a slide rail 40, which is a constituent member of a slide mechanism 38 (third adjusted mechanism) as a front / rear position adjusting mechanism, is disposed. The slide mechanism 38 is well known in the art, and an upper rail 42 fixed to the lower end portion of the lower frame 28 is supported by a lower rail 44 fixed to the vehicle body floor so as to be slidable in the front-rear direction of the seat. The slide mechanism 38 is provided with a lock mechanism (not shown) that locks (regulates) the slide of the upper rail 42 with respect to the lower rail 44. This lock mechanism is configured to release the lock when a lock release lever 46 (not shown in FIG. 3) pivotally supported on the lower frame 28 is rotated in the lock release direction (the direction of arrow D in FIG. 1). It has become. As a result, the upper rail 42 slides with respect to the lower rail 44, that is, the front and rear position of the vehicle seat 10 with respect to the vehicle body floor can be adjusted.

  Next, the sheet adjustment device 14 will be described.

  As shown in FIG. 2, the sheet adjustment device 14 includes a first transmission member 50 and a second transmission member 52 (both transmission members), a base plate 54, a link member 56, a cable 58, and an operation lever 60 ( An operation member), a switching member 62, and a tension coil spring 64 (elastic member). Hereinafter, these structural members will be described.

  The 1st transmission member 50 is arrange | positioned at the sheet | seat width direction outer side of the pump type lifter apparatus 34, as FIG. The first transmission member 50 is formed of sheet metal, and has a disc-shaped main body portion 50A that is coaxially attached to the input shaft of the pump type lifter device 34 and is relatively non-rotatable, and a rear portion of the main body portion 50A. It is comprised by the connection piece 50B extended to the sheet | seat width direction outer side from the edge part. The leading end side of the connecting piece 50B is bent toward the rear side of the seat, and a substantially rectangular opening 66 is formed at the center of the connecting piece 50B. When the connecting piece 50B is rotated in the direction of arrow B in FIG. 2 integrally with the input shaft of the pump type lifter device 34, the seat cushion frame 16 is displaced upward. Further, when the connecting piece 50B is rotated in the direction of arrow C in FIG. 2 integrally with the input shaft of the pump type lifter device 34, the seat cushion frame 16 is displaced downward.

  The base plate 54 is provided so as to cover the first transmission member 50 and the pump type lifter device 34 from the outside in the seat width direction. The base plate 54 is formed of sheet metal, and has a substantially hat-shaped cross section in which the inner side in the sheet width direction is opened as viewed from the sheet vertical direction. Both front and rear ends of the base plate 54 are bent toward opposite sides, and are fastened and fixed to the outer surface in the seat width direction of the seat cushion frame 16 by bolts 68 and nuts (not shown).

  The base plate 54 has a main body portion 54A disposed on the outer side in the sheet width direction of the first transmission member 50, and a support shaft 70 projecting outward in the sheet width direction is integrated with the central portion of the main body portion 54A. Fixed. The support shaft 70 is arranged coaxially with the input shaft of the pump lifter device 34. The base plate 54 has an opening 72 on the rear side of the seat with respect to the support shaft 70, and the rear side of the first transmission member 50 including the connecting piece 50 </ b> B is located outside the base plate 54 in the seat width direction through the opening 72. Exposed.

  Further, the base plate 54 has a portion in front of the seat with respect to the support shaft 70 in the main body 54A as an operation restricting portion 53. The operation restricting portion 53 has a substantially H-shaped guide groove as viewed from the seat width direction. 74 is formed. As shown in FIG. 6, the guide groove 74 includes a first arcuate part 74A and a second arcuate part 74B that are concentric with the support shaft 70, and a bending direction of the first arcuate part 74A. A communication portion 74C is provided that connects the center portion and the center portion in the bending direction of the second arcuate portion 74B in the substantially front-rear direction of the seat, and cannot be displaced with respect to the seat body 12.

  The second arcuate part 74B is disposed on the seat rear side (support shaft 70 side) of the first arcuate part 74A, and the length dimension along the bending direction is set shorter than that of the first arcuate part 74A. Has been. A pair of upper and lower restricting pieces 55 are formed between the first arc-shaped portion 74A and the second arc-shaped portion 74B so as to face each other through the communication portion 74C. In addition, a substantially semicircular recess 74D is formed at the edge of the first arcuate portion 74A in the curving direction on the opposite side (seat front side) of the communication portion 74C. The recess 74D and the first arcuate portion 74A are smoothly continuous. The guide groove 74 corresponds to a switching member 62 described later.

  The second transmission member 52 is disposed on the outer side in the sheet width direction with respect to the main body portion 54 </ b> A of the base plate 54. The second transmission member 52 is formed in a long shape by a sheet metal, and is disposed in a state where the plate thickness direction is along the sheet width direction and the longitudinal direction is substantially along the sheet vertical direction. A circular through hole 76 is formed in the integral part (upper end) in the longitudinal direction of the second transmission member 52, and the support shaft 70 is inserted into the through hole 76. Thus, the second transmission member 52 is supported so as to be rotatable around the support shaft 70 with respect to the support shaft 70. Further, a substantially triangular notch 78 is formed at the rear end portion of the upper end portion of the second transmission member 52 as viewed from the sheet width direction. This notch 78 corresponds to a switching member 62 described later.

  Further, a cable locking portion 52 </ b> A is provided in the middle portion in the longitudinal direction of the second transmission member 52. One end of a cable 58 (wire) is locked to the cable locking portion 52A. The other end of the cable 58 is engaged with the lock release lever 46 of the slide mechanism 38 described above. Therefore, when the second transmission member 52 rotates in the direction in which the cable locking portion 52A is displaced to the rear side of the seat (the direction of arrow C in FIG. 2), the rotational force of the second transmission member 52 is unlocked via the cable 58. The signal is transmitted to the lever 46, and the lock release lever 46 is rotated in the lock release direction. Thereby, the lock | rock of the slide mechanism 38 is cancelled | released.

  In addition, a connection portion 52 </ b> B formed in a substantially oval shape is provided at the lower end portion of the second transmission member 52. The connecting portion 52B is formed in an elongated shape substantially along the vehicle front-rear direction, and a long hole 80 having the longitudinal direction of the connecting portion 52B as a longitudinal direction is formed in the center portion thereof. The long hole 80 is curved along the rotation direction of the second transmission member 52. The long hole 80 corresponds to the link member 56.

  The link member 56 is formed in a long shape by a sheet metal, and is arranged in a state where the plate thickness direction is along the sheet width direction. A columnar connecting pin 82 protruding outward in the sheet width direction is fixed to one longitudinal end portion of the link member 56, and the connecting pin 80 is inserted into the long hole 80. The connecting pin 82 is movable relative to the second transmission member 52 within a range along the long hole 80, and is usually disposed in contact with or close to the rear end portion of the long hole 80. Yes.

  The distal end portion of the lock release lever 22 described above is rotatably connected to the other longitudinal end portion of the link member 56 via a connecting pin 82. Thus, the second transmission member 52 and the lock release lever 22 are connected via the link member 56. For this reason, when the second transmission member 52 rotates in the direction of pulling the link member 56 (the direction of arrow B in FIG. 2), the rotational force of the second transmission member 52 is transmitted to the lock release lever 22 via the link member 56. The lock release lever 22 is rotated in the lock release direction. As a result, the reclining mechanism 20 is unlocked.

  In this case, the cable 58 is bent between the second transmission member 52 and the lock release lever 46, so that the rotational force of the second transmission member 52 is not transmitted to the lock release lever 46. When the second transmission member 52 rotates in the direction of arrow C in FIG. 2, the connecting pin 80 moves to the front end side of the long hole 84, so that the rotational force of the second transmission member 52 is applied to the link member 56. It is not transmitted.

  The operation lever 60 (see FIGS. 1 and 2; not shown in FIGS. 3 to 5) is disposed outside the second transmission member 52 in the sheet width direction. The operation lever 60 is formed of a resin material in a long shape, and has a bottomed cylindrical base portion 60A having an axial dimension that is open on the inner side in the seat width direction, and an outer peripheral portion of the base portion 60A toward the front side of the seat. It is comprised by the cylindrical arm part 60B extended. The inner side (inside the cylinder) of the arm part 60B communicates with the inner side of the base part 60A.

  A cylindrical boss 60A1 protruding inward in the sheet width direction is provided at the center of the bottom wall of the base 60A. A circular through hole 84 is formed in the boss portion 60A1 so as to penetrate the boss portion 60A1 in the sheet width direction, and the support shaft 70 described above is inserted into the through hole 84. A male screw is formed at the tip of the support shaft 70 penetrating the through hole 84, and a nut 86 is screwed into the male screw. Thus, the base 60A is supported so as to be rotatable with respect to the support shaft 70, and the operation lever 60 is supported so as to be rotatable about the support shaft 70 (around the axis along the seat width direction) with respect to the seat cushion frame 16. Has been.

  The switching member 62 is disposed between the shaft 88 (operation side member) attached to the operation lever 60, the operation button 90 attached to the shaft 88, and the base 60 </ b> A of the operation lever 60 and the second transmission member 52. And a selector 92 (sheet side member).

  The shaft 88 is formed of a metal bar, and is inserted into the arm portion 60 </ b> B of the operation lever 60. The shaft 88 is provided along the longitudinal direction of the arm portion 60B, and is supported so as to be slidable in the longitudinal direction with respect to the arm portion 60B. A base end portion (end portion on the rear side of the seat) of the shaft 88 is bent inward in the seat width direction (selector 92 side), and a protruding portion that protrudes inward in the seat width direction is formed on the base end portion of the shaft 88. 88A is provided. The protrusion 88A corresponds to the selector 92 and the guide groove 74 described above.

  The operation button 90 is formed in a cylindrical shape from a resin material, and is inserted into a circular through hole 94 formed at the tip of the arm portion 60B. A press-fit hole (not shown) is formed at the end of the operation button 90 on the rear side of the seat (base 60A side), and the tip end of the shaft 88 (end on the front side of the seat) is press-fitted into the press-fit hole. Yes. Thus, the operation button 90 is attached to the tip end portion of the shaft 88. This operation button 90 is arranged in a state of protruding from the tip of the arm portion 60B.

  The selector 92 is formed in a long shape by a sheet metal, and is arranged in a state where the plate thickness direction is along the sheet width direction and the longitudinal direction is along the longitudinal direction (substantially the front-rear direction of the sheet) of the operation lever 60. A long hole 96 whose longitudinal direction is the longitudinal direction of the selector 92 is formed in the central portion of the selector 92 in the longitudinal direction. A support shaft 70 is inserted into the long hole 96, and the selector 92 is supported by the seat cushion frame 16 via the support shaft 70 and the base plate 54. The selector 92 is rotatable relative to the support shaft 70 and is slidable within the range of the long hole 96.

  A circular through hole 98 is formed in a portion of the selector 92 on the front side of the sheet from the long hole 96. A projecting portion 88A of the shaft 88 is inserted into the through hole 98 from the outer side in the sheet width direction, and a tip end side of the projecting portion 88A penetrating the selector 92 is inserted into the guide groove 74 of the base plate 54.

  Then, the projection 88A is inserted into the through hole 98 as described above, so that the shaft 88 and the selector 92 are connected. When the shaft 88 slides in the longitudinal direction with respect to the operation lever 60, the selector 92 is The shaft 88 integrally slides in the longitudinal direction of the operation lever 60. However, the shaft 88 and the selector 92 can be easily separated by pulling out the protruding portion 88A from the through hole 98 outward in the sheet width direction.

  A cylindrical pin 100 is fixed to the rear end portion of the selector 92. The pin 100 protrudes inward in the sheet width direction from the rear end portion of the selector 92 and is disposed between the connecting piece 50 </ b> B of the first transmission member 50 and the upper end portion of the second transmission member 52. In another embodiment, a cut-and-raised portion that is cut and raised toward the inner side in the sheet width direction is formed at the rear end portion of the selector 92, or the protruding end portion is bent toward the inner side in the sheet width direction. These cut and raised portions or protrusions may be used in place of the pin 100.

  The tension coil spring 64 is provided between the front end portion of the selector 92 and the seat cushion frame 16. The tension coil spring 64 is a tension coil spring, and a substantially semicircular arc-shaped first hook portion 64 </ b> A formed at one end portion is inserted into a hook hole formed at the front end portion of the selector 92. As a result, one end of the tension coil spring 64 is locked to the front end of the selector 92.

  A second hooking portion 64 </ b> B having a substantially semicircular arc shape is provided at the other end portion of the tension coil spring 64. The second hooking portion 64B is hooked on the hooking piece 102 on the seat front side and the seat upper side with respect to the first hooking portion 64A. The hooking piece 102 is formed by cutting and raising a part of the outer side surface of the seat cushion frame 16 in the seat width direction. As a result, the other end portion of the tension coil spring 64 is locked to the seat cushion frame 16, and the tension coil spring 64 is stretched between the front end portion of the selector 92 and the seat cushion frame 16. In other embodiments, the other end of the tension coil spring 64 may be locked to the base plate 54, or may be locked to another member attached to the seat cushion frame 16 or the base plate 54. It may be configured.

  Here, in the seat adjusting device 14 having the above-described configuration, the switching member 62 is biased to the non-operation position (the position shown in FIGS. 3 and 4) by the tension coil spring 64, and the operation lever 60 is in the neutral position. The position is biased to the position shown in FIGS. 1 and 3 to 5. The non-operation position is set at one end (here, the front end) of the slide range of the switching member 62 relative to the operation lever 60, and the neutral position is the middle of the rotation range of the operation lever 60 relative to the seat body 12 (here). Center).

  In a state where the switching member 62 is located at the non-operation position and the operation lever 60 is located at the neutral position (hereinafter referred to as a non-operation state), the protruding portion 88A of the shaft 88 is fitted into the recess 74D of the guide groove 74. It has become. Thereby, the operation lever 60 is held in the neutral position. From this state, when an upward or downward operating force is applied to the arm portion 60B of the operating lever 60, the protruding coil spring 64 is slightly extended while the protruding portion 88A comes out of the recessed portion 74D, and the protruding portion 88A is guided into the guide groove. By moving in the first arcuate portion 74A of 74, the operation lever 60 is allowed to rotate upward and downward. At this time, the protrusion 88A and the recess 74A provide a sense of moderation in the operation of the operation lever 60.

  In the non-operating state, as shown in FIG. 4, the pin 100 of the selector 92 is inserted into the notch 78 of the second transmission member 52, and the switching member 62 and the second transmission member 52 are connected ( Engage). In this state, the operation lever 60 and the second transmission member 52 are connected via the switching member 62, so that the operation force of the operation lever 60 can be transmitted to the slide mechanism 38 and the reclining mechanism 20.

  Furthermore, in the non-operation state, the projecting portion 88 </ b> A and the communicating portion 74 </ b> C of the guide groove 74 are opposed to the sliding direction of the switching member 62. In this state, when a pressing force to the rear side of the seat is applied to the operation button 90, the protruding portion 88A moves in the communication portion 74C to the rear side of the seat, so that the pressing operation of the operation button 90 is permitted. As a result, the switching member 62 is moved (slid) to the operation position shown in FIG.

  In a state in which the switching member 62 is slid to the operation position (hereinafter referred to as a button operation state), the protruding portion 88A is disposed in the second arc-shaped portion 74B of the guide groove 74 as shown in FIG. In this state, the protrusion 88 </ b> A moves in the second arcuate portion 74 </ b> B of the guide groove 74, thereby allowing the operation lever 60 to rotate upward and downward.

  In the button operation state, the pin 100 of the selector 92 is inserted into the opening 66 of the connecting piece 50B of the first transmission member 50 as shown in FIG. When the operating lever 60 is operated upward or downward in this state, the pin 100 hits (engages) the connecting piece 50B, thereby connecting the operating lever 60 and the first transmission member 50 via the switching member 62. Is done. As a result, the operating force of the operating lever 60 can be transmitted to the pump type lifter device 34 of the lifter mechanism 26.

  Further, in the seat adjustment device 14, the switching member 62 is positioned between the non-operation position and the operation position, that is, the engagement state of the switching member 62 with respect to the first transmission member 50 and the second transmission member 52 is switched. In the midway state, the protrusion 88A hits the edge of the communicating portion 74C (that is, the tip of the pair of upper and lower restricting pieces 55), so that the rotation of the operation lever 60 from the neutral position is restricted.

  Further, when the operation lever 60 is operated to the upper side or the lower side of the neutral position (including a state in the middle of the operation), the protruding portion 88A is the edge of the first arcuate portion 74A or the edge of the second arcuate portion 74B. Movement of the switching member 62 from the non-operating position to the operating position or movement of the switching member 62 from the operating position to the non-operating position by hitting a portion (that is, one side of the pair of upper and lower restricting pieces 55) Are now regulated.

(Function and effect)
Next, the operation and effect of this embodiment will be described.

  In the vehicle seat 10 having the above-described configuration, the operation lever 60 is rotatably attached to the seat cushion frame 16. The operation lever 60 can be operated up and down by an occupant seated on the seat body 12 by gripping the arm portion 60B. In addition, a switching member 62 having an operation button 90 protruding from the tip of the arm portion 60B is attached to the operation lever 60, and an occupant holding the arm portion 60B presses the operation button 90 with a thumb or the like. Thus, the switching member 62 is moved from the non-operation position to the operation position.

  Here, in a state where the switching member 62 is located at the non-operation position (hereinafter referred to as a button non-operation state), the pin 100 of the selector 92 is disposed in the notch 78 of the second transmission member 52. Accordingly, the operation lever 60 and the second transmission member 52 are connected via the switching member 62. In this state, when the arm portion 60B of the operation lever 60 is operated to the upper side (one side) of the neutral position as shown by a two-dot chain line in FIG. 7, the operation force is transmitted to the second transmission member 52 and the link member. 56 is transmitted to the lock release lever 22 of the reclining mechanism 20 through 56, and the lock release lever 22 is rotated in the lock release direction. As a result, the reclining mechanism 20 is unlocked and the reclining angle of the seat back can be adjusted.

  Further, when the arm portion 60B of the operation lever 60 is operated to the lower side (the other side) of the neutral position as shown by a two-dot chain line in FIG. The signal is transmitted to the lock release lever 46 of the slide mechanism 38 via the transmission member 52 and the cable 58, and the lock release lever 46 is rotated in the lock release direction. Thereby, the lock | rock of the slide mechanism 38 is cancelled | released and it will be in the state which can adjust the front-back position of the vehicle seat 10. FIG.

  On the other hand, when the switching member 62 is moved to the operation position by pressing the operation button 90 (button operation state), the pin 100 of the selector 92 is disposed in the opening 66 of the connecting piece 50B. . Thereby, the operation lever 60 and the first transmission member 50 can be connected via the switching member 62. In this state, when the arm portion 60B of the operation lever 60 is operated to the upper side (one side) of the neutral position as shown by a two-dot chain line in FIG. 9, the operation force is transmitted to the first transmission member 50. The first transmission member 50 is rotated integrally with the input shaft of the pump lifter device 34 in the direction of arrow B in FIGS. Thus, the rotational force is transmitted to the rear link 32 via the pinion, the lifter gear 35, etc., and the seat cushion frame 16 is displaced upward with respect to the lower frame 28 (the seat height is adjusted to be high). In FIG. 9, the illustration of the state in which the seat cushion frame 16 is displaced with respect to the lower frame 28 is omitted.

  Further, in the above operation state, when the arm portion 60B of the operation lever 60 is operated to the lower side (the other side) of the neutral position as shown by a one-dot chain line in FIG. The first transmission member 50 is rotated in the direction of arrow C in FIGS. 2 and 9 together with the input shaft of the pump type lifter device 34. Thereby, the rotational force is transmitted to the rear link 32 via the pinion, the lifter gear 35, etc., and the seat cushion frame 16 is displaced downward with respect to the lower frame 28 (the seat height is adjusted to be low).

  Thus, in the present embodiment, the reclining mechanism 20, the slide mechanism 38, and the lifter mechanism 26 can be adjusted or brought into an adjustable state by a single operation lever 60. In addition, since the operation direction of the arm portion 60B of the operation lever 60 is only the upper side and the lower side and is simple, it is possible to improve operability and effectively use the space. In particular, it is preferable in that it can be applied to a small vehicle or the like in which it is difficult to secure a wide space between the vehicle seat and the vehicle body side portion (side door or the like).

  Further, in the present embodiment, the switching member 62 is biased to the non-operation position by the tension coil spring 64 spanned between the seat body 12 and the selector 92 that constitutes a part of the switching member 62, and The operation lever 60 is urged to the neutral position. Accordingly, it is possible to save time and labor for the occupant to return the operating lever 60 to the neutral position and to return the switching member 62 to the non-operating position, so that operability can be improved. Moreover, since both the operation lever 60 and the switching member 62 are urged by the single tension coil spring 64, the configuration for improving the operability can be simplified.

  In the present embodiment, when the operating lever 60 is returned to the neutral position and the switching member 62 is returned to the non-operating position by the urging force of the tension coil spring 64, the selector 74 is inserted into the recess 74D provided in the guide groove 74 of the base plate 54. 92 pins 100 (a part of the switching member 62) are fitted. Thereby, since the operation lever 60 is hold | maintained in a neutral position, it can prevent that the operation lever 60 rotates from a neutral position carelessly by the vibration etc. at the time of vehicle travel.

  In the present embodiment, the operation lever 60 includes a base portion 60A that is rotatably supported with respect to the seat body 12, and an arm portion 60B that extends from the base portion 60A to the seat front side. For this reason, the operating lever 60 is subjected to a rotational force in the direction in which the arm portion 60B is lowered due to the mass of the arm portion 60B, but the switching member 62 attached to the operating lever 60 has a first tension coil spring 64 first. The hook portion 64A (one end portion) is locked, and the second hook portion 64B (the other end portion) of the tension coil spring 64 is seat cushion frame on the seat front side and seat upper side with respect to the first hook portion 64A. 16 is locked. Thereby, the rotational force acting on the operation lever 60 can be favorably supported by the tension coil spring 64.

  In the present embodiment, the switching member 62 includes a shaft 88 attached to the operation lever 60 and a selector 92 supported by the seat body 12 so as to be connectable to a plurality of transmission members. And the selector 92 are detachably connected to each other, and a tension coil spring 64 is stretched between the selector 92 and the seat cushion frame 16. For this reason, when manufacturing the vehicle seat 10, the shaft 88 is attached to the operation lever 60 before the operation lever 60 is attached to the support shaft 70 to make a subassembly, and the selector 92 is connected to the first transmission member 50 and the second transmission member 50. A tension coil spring 64 can be stretched between the selector 92 and the seat cushion frame 16 by being attached to the support shaft 70 so as to be connectable to the transmission member 52. Thereby, manufacture of this vehicle seat 10 can be made easy.

  Furthermore, in the present embodiment, the operation lever 60 is rotatable about an axis along the sheet width direction, and the operation direction of the operation lever 60 is an upper side and a lower side. For this reason, even when the vehicle collides from the front, rear, left, or right, the operation lever 60 is inadvertently rotated by its own weight or the like, that is, the reclining mechanism or the slide mechanism is unlocked carelessly. This can be prevented or effectively suppressed.

(Supplementary explanation of the embodiment)
In the above embodiment, the rotational force of the second transmission member 52 is transmitted to the reclining mechanism 20 via the link member 56 and also transmitted to the slide mechanism 38 via the cable 58. The invention is not limited to this, and members other than link members and cables may be used.

  In the above embodiment, the shaft 88 (operation side member) and the selector 92 (sheet side member) constituting the switching member 62 are detachably connected. However, the present invention is not limited to this, and the operation is not limited thereto. The side member and the sheet side member may be integrally formed.

  Moreover, in the said embodiment, although the protrusion part 88A of the shaft 88 fits in the recessed part 74D provided in the guide groove 74, it was set as the structure by which the operation lever 60 is hold | maintained in a neutral position, but this invention is this. The configuration is not limited, and the recess 74D and the guide groove 74 may be omitted.

  Moreover, in the said embodiment, although the tension coil spring 64 was set as the elastic member, this invention is not restricted to this, Other types of elastic members (for example, rubber | gum etc.) can also be used.

  In the above-described embodiment, the case where the reclining mechanism 20, the slide mechanism 38, and the lifter mechanism 26 are adjusted portions has been described. However, the present invention is not limited to this, and other mechanisms (lumbar support mechanism, tilt mechanism) Etc.) may be configured as an adjusted mechanism.

  In the above-described embodiment, the case where the vehicle seat 10 includes only the reclining mechanism 20, the slide mechanism 38, and the lifter mechanism 26 (all of which are adjusted mechanisms) has been described, but the present invention is not limited thereto, and the vehicle Another adjustment mechanism other than the above may be added to the work sheet. In this case, for example, a third transmission member may be added in addition to the first transmission member 50 and the second transmission member 52, and the other adjusted mechanism may be connected to the third transmission member. In this case, the switching member is moved from the non-operation position to the second operation position via the first operation position, so that the operation lever is connected to the third transmission member via the switching member. You can do it.

  Further, in the above-described embodiment, the operation lever 60 (operation member) is configured to be rotatable about the axis along the sheet width direction with respect to the sheet main body 12. Any member may be used as long as it is movable with respect to the seat body, and the operation member may be slidable with respect to the seat body.

  In addition, the present invention can be implemented with various modifications without departing from the scope of the invention. Needless to say, the scope of rights of the present invention is not limited to the above embodiment.

10 Vehicle Seat 12 Seat Main Body 20 Reclining Mechanism (Adjusted Mechanism)
26 Lifter mechanism (Adjusted mechanism)
38 Slide mechanism (Adjusted mechanism)
50 1st transmission member (transmission member)
52 Second transmission member (transmission member)
53 Operation restriction part 60 Operation lever (operation member)
60A Base 60B Arm 62 Switching member 64 Spring (elastic member)
74D Concave 88 Shaft (Operation side member)
92 Selector (sheet side member)

Claims (4)

A plurality of adjustable mechanisms, each of which is provided on the seat body and adjusted or adjustable by transmitting an operating force;
A plurality of transmission members each connected to the adjusted mechanism and capable of transmitting operating force to the connected adjusted mechanism;
An operation member provided so as to be movable with respect to the seat body, and operable to one side and the other side of the movement range;
A switching member that is movably provided with respect to the operation member, is individually engageable with the plurality of transmission members, and is operated by itself to switch the transmission member to be engaged;
It spans between the seat body and the switching member, and urges the switching member to a non-operation position set at one end of a movement range with respect to the operation member, and moves the operation member to the one side and the other. An elastic member for biasing to a neutral position set in the middle of the side;
Vehicle seat equipped with   In a state where the operating member is located at the neutral position and the switching member is located at the non-operating position, a part of the switching member is fitted into a recess provided so as not to be displaceable with respect to the seat body. The vehicle seat according to claim 1, wherein the operation member is held in the neutral position. The operation member is an operation lever including a base portion rotatably supported with respect to the seat body, and an arm portion extending from the base portion toward the seat front side,
One end of the elastic member is locked to the switching member on the front side of the seat with respect to the rotation center of the base, and the other end is locked to the seat body on the front side of the seat and on the upper side of the seat with respect to the one end. The vehicle seat according to claim 1 or 2, wherein the vehicle seat is provided.   The switching member includes an operation side member supported by the operation member, and a sheet side member supported by the seat body so as to be engageable with the plurality of transmission members, and the operation side member and the sheet side The vehicle seat according to any one of claims 1 to 3, wherein a member is detachably connected and the elastic member is stretched between the seat side member and the seat body. .