JP2008001139A - Occupant seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a rotating direction of a seat back same as an operating direction of an operating member for releasing locking of the seat back. <P>SOLUTION: When the seat back 14 of a seat is rotated to a vehicle upper side, a fingertip is engaged with a front notch 36 of a releasing lever 20 provided on an upper wall portion 14B of the seat back 14. If the releasing lever 20 is pulled up, the releasing lever 20 rotates about a rear side shaft 42 to the vehicle upper side, thereby releasing the locking of the seat back. When the seat back 14 is rotated to a vehicle front side, the fingertip is engaged with a rear notch 38. If the releasing lever is pulled up, the releasing lever 20 rotates about a front side shaft 40 to the vehicle front side, thereby releasing the locking of the seat back. Therefore, the rotating direction of the seat back 14 and the operating direction of the releasing lever 20 become same. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an occupant seat, and more particularly to an occupant seat used in a vehicle such as an automobile.

Conventionally, an occupant seat used in a vehicle such as an automobile is known (see, for example, Patent Document 1). In this technique, by operating an operation knob disposed on the upper portion of the seat back, the wire connecting the release lever and the reclining device moves, and the locking of the reclining device can be released. Conventionally, there is known a one-way drive mechanism that moves an action point in a predetermined direction regardless of the moving direction of the force point (see, for example, Patent Document 2).
JP 2004-306863 A JP 2003-156115 A

  However, in the passenger seat disclosed in Patent Document 1, it is necessary to rotate the seat back in the rotational direction (forward or upward) with the operation knob pulled upward and the reclining device unlocked. As a result, the operation direction of the operation knob may not coincide with the rotation direction of the seat back, and it is difficult to rotate the seat back. Further, in the one-way drive mechanism of Patent Document 2, the operation direction of the control lever (power point) is a direction along the moving direction of the feedback sleeve (action point). As a result, even when this one-way drive mechanism is used for the operation knob of the seat back, the operation direction of the operation knob may not match the rotation direction of the seat back, and it is difficult to rotate the seat back.

  In view of the above facts, an object of the present invention is to provide an occupant seat in which the rotation direction of the seat back and the operation direction of the operation member for unlocking the seat back can be made the same direction.

  According to a first aspect of the present invention, there is provided an occupant seat according to the first aspect of the present invention. A seat back that is rotatable with respect to a seat cushion in a tilting direction and a raising direction; A seat back rotation preventing means for preventing rotation of the seat back in an unlocked state, an operation member provided on the seat back and capable of rotating in a tilting direction and a raising direction of the seat back; A release connecting member that connects the seat back rotation preventing means and the operation member, a rotation member that is provided on the seat back and rotatably supports the operation member, and the rotation of the operation member in the tilting direction of the seat back and the The release connecting member is moved by the operating member by any of rotation in the seat back raising direction and An operating member rotating means for moving to the unlocked state Tobakku rotation preventing means from the locked state, characterized by having a.

  When the seat back of the occupant seat is rotated in the tilting direction with respect to the seat cushion, the seat back rotation preventing means for preventing the rotation of the seat back in the locked state is connected by a release connecting member and provided on the seat back. When the operating member is rotated in the direction in which the seat back is tilted, the release connecting member is moved by the operating member rotating means provided on the seat back and rotatably supporting the operating member, and the seat back rotation preventing means is moved from the locked state. You can move to the unlocked state. As a result, by continuously rotating the operating member in the direction in which the seat back is tilted, the seat back can be rotated in the tilting direction with respect to the seat cushion. On the other hand, when rotating the seat back in the raising direction with respect to the seat cushion, the operating member is rotated by rotating the operation member connected to the seat back rotation preventing means by the release connecting member in the raising direction of the seat back. The release connecting member is moved by the means, and the seat back rotation preventing means can be moved from the locked state to the unlocked state. As a result, by continuously rotating the operating member in the direction in which the seat back is raised, it is possible to cause the seat back to rotate in the direction in which the seat cushion is raised. That is, the rotation direction of the seat back and the operation direction of the operation member for releasing the lock of the seat back are the same direction.

  According to a second aspect of the present invention, in the occupant seat according to the first aspect, the operation member rotating means is provided in parallel to each other across a central portion of the operation member to which the release connection member is connected. A pair of shaft members for supporting the operation member on the operation member rotating means, and supporting the one operation member movably along an arc centered on the other shaft member. One of a pair of guide means capable of rotating in either the seat back tilting direction or the seat back raising direction is provided, and the operating member includes the pair of shaft members and a pair of The other of the guide means is provided.

  When the operating member of the operating member rotating means is rotated in the direction in which the seat back is tilted or raised, a pair of release connecting members are provided in parallel to each other across the central portion of the operating member to which the releasing connecting member is connected, and support the operating member One of the shaft members is centered on the rotation, and the other shaft member moves along a guide means having an arc centered on the one shaft member. For this reason, with a simple configuration, the operation member can rotate in both the direction in which the seat back is tilted and the direction in which the seat back is raised.

  According to a third aspect of the present invention, in the occupant seat according to the first or second aspect, the operation member rotating means is configured to rotate the connection portion of the release connection member from a central portion of the operation member. It has the connection part support means supported so that it can move to the rotation center side of an operation member, It is characterized by the above-mentioned.

  When the operating member is rotated in the direction in which the seat back is tilted or raised, the connecting portion supporting means moves the connecting portion of the releasing connecting member from the center portion of the rotating operating member to the rotation center side of the operating member. As a result, the connecting portion (action point) of the release connecting member in the operating member approaches the rotation center of the operating member while the operating member is rotating. For this reason, compared with the case where the connection part (action point) of the connection member for release does not move from the center part of the operation member, the distance between the connection part (action point) of the connection member for release in the operation member and the rotation center, The ratio of the distance between the operation portion (power point) and the rotation center in the operation member is increased, and the operation force of the operation member for moving the release connecting member is reduced.

  In the passenger seat according to the first aspect of the present invention, the rotation direction of the seat back and the operation direction of the operation member for releasing the lock of the seat back can be made the same direction.

  The occupant seat according to the second aspect of the present invention can make the rotation direction of the seat back and the operation direction of the operation member for unlocking the seat back in the same direction with a simple configuration.

  The passenger seat according to the third aspect of the present invention can reduce the operating force of the operating member.

  An occupant seat according to a first embodiment of the present invention will be described with reference to FIGS.

  In the figure, the arrow FR indicates the vehicle front direction, the arrow IN indicates the vehicle width inside direction, and the arrow UP indicates the vehicle upward direction.

  FIG. 5 is a perspective view of the left side seat of the vehicle to which the occupant seat according to the first embodiment of the present invention is applied, as viewed from the front outer side of the vehicle.

  As shown in FIG. 5, the seat 10 as the passenger seat in the present embodiment is a reclining seat, and the seat back 14 is centered on the lower end portion 14 </ b> A at the rear end portion 12 </ b> A of the seat cushion 12 of the seat 10. The vehicle forward (in the direction of arrow A in FIG. 5), which is in the direction of tilting with respect to the seat cushion 12 from the normal use position (standing position shown by the solid line in FIG. 5), and the tilted position (state shown by the two-dot chain line in FIG. 5) ) Is supported so as to be able to rotate upward (in the direction of arrow B in FIG. 5), which is the raising direction from the vehicle.

  Further, a release lever 20 as an operation member is provided on the outer side in the vehicle width direction of the upper wall portion 14B of the seat back 14, and the lock lever (rotation prohibited state) is established by operating the release lever 20. The locked state of the seat back 14 is released so that the seat back 14 can be rotated. Further, the release lever 20 is connected to a release lever 24A of a lock device 24 as a seat back rotation preventing means by a wire 22 as a release connecting member.

  Further, since the wire 22 is always pulled in the direction of the locking device 24 (direction of arrow S in FIG. 5) by the urging means provided in the locking device 24, the release lever 20 returns to the original position when the hand is released. It is like that. In addition, it is good also as a structure which provided the biasing means in the release lever 20 which returns the release lever 20 to an original position when a hand is released.

  Therefore, when the seat back 14 is rotated in the direction of arrow A or B in FIG. 5, the lock lever is operated by operating the release lever 20 to pull the wire 22 and pull the release lever 24A of the lock device 24. 24 is released.

  FIG. 1 is a perspective view of an occupant seat according to a first embodiment of the present invention as viewed from the front outer side of a vehicle.

  As shown in FIG. 1, the release lever 20 is provided inside a box-shaped bezel 30 having an upper portion opened as an operation member rotating means. A flange 30A is formed on the upper edge of the bezel 30 toward the outside of the opening. The shape of the release lever 20 viewed from above the vehicle is rectangular. In addition, a gap 32 is formed between the front wall portion 30B of the bezel 30 and the front wall portion 20A of the release lever 20 so that a fingertip can be inserted during operation, and the rear wall portion 30C of the bezel 30 and the release lever 20 A gap 34 is formed between the rear wall portion 20B and a fingertip for insertion. Further, the front wall portion 20A of the release lever 20 is formed with a front notch 36 for engaging the fingertip during operation from the lower side, and the rear wall portion 20B of the release lever 20 is engaged with the fingertip during operation. 38 is formed from the lower side.

  A front shaft 40 made of an iron round bar as a shaft member is arranged in the vehicle width direction at the front portion of the vehicle width direction outer side wall portion 30D and the front portion of the vehicle width direction inner wall portion 30E in the bezel 30. It is stretched along. Further, a rear shaft 42 made of an iron round bar as a shaft member extends in the vehicle width direction at the rear portion of the vehicle width direction outer side wall portion 30D and the rear portion of the vehicle width direction inner wall portion 30E of the bezel 30. It is stretched along. It should be noted that both longitudinal end portions 40A of the front shaft 40 and both longitudinal end portions 42A of the rear shaft 42 pass through the vehicle width direction outer side wall portion 30D and the vehicle width direction inner side wall portion 30E of the bezel 30, respectively. .

  On the other hand, a front slit 46 as a guide means is formed in the front portion of the vehicle width direction outer side wall portion 20C and the front portion of the vehicle width direction inner wall portion 20D of the release lever 20, and the vehicle width in the release lever 20 A rear slit 48 as a guide means is formed at the rear part of the direction outer side wall part 20C and the rear part of the vehicle width direction inner side wall part 20D. Further, both longitudinal end portions 40A of the front shaft 40 are inserted into the left and right front slits 46 so as to be relatively movable, and the longitudinal end portions 42A of the rear shaft 42 are relatively movable to the left and right rear slits 48. It is inserted.

  FIG. 2 is an enlarged cross-sectional view taken along line 2-2 in FIG. 3 is an enlarged cross-sectional view taken along the line 3-3 in FIG. 5, and FIG. 4 is an enlarged cross-sectional view taken along the line 4-4 in FIG.

  As shown in FIG. 2, the bezel 30 is housed in a recess 31 formed in the upper wall portion 14 </ b> B of the seat back 14, and the flange 30 </ b> A of the bezel 30 serves as a peripheral portion of the recess 31. It overlaps with the site of the wall portion 14B.

  The left and right front slits 46 in the release lever 20 are formed along an arc having a radius R1 centered on the axis of the rear shaft 42, and the left and right rear slits 48 are centered on the axis of the front shaft 40. It is formed along a circular arc with a radius R2. The front shaft 40 is at the upper end of the front slit 46, and the rear shaft 42 is at the upper end of the rear slit 48. Therefore, the front slit 46 is formed along an arc of radius R1 centered on the upper end of the rear slit 48, and the rear slit 48 is formed along an arc of radius R2 centered on the upper end of the front slit 46. ing. Further, the radius R1 and the radius R2 are equal (R1 = R2).

  Therefore, when the fingertip K1 is engaged with the front notch 36 of the release lever 20 and the release lever 20 is pulled up in the seat back 14 in the tilted position, as shown by a two-dotted line in FIG. The vehicle is rotated upward (in the direction of arrow C in FIG. 3) with the side shaft 42 as the center of rotation. 4, when the fingertip K2 is engaged with the rear notch 38 of the release lever 20 and the release lever 20 is pulled up in the seat back 14 in the use position (standing position) as indicated by a two-dotted line, the release lever 20 is lifted. 20 is configured to rotate forward of the vehicle (in the direction of arrow D in FIG. 4) with the front shaft 40 as the center of rotation.

  Further, the rotation angle of the release lever 20 can be adjusted by the length of the front slit 46 and the length of the rear slit 48.

  In addition, the space | interval of the vehicle front-back direction of the front slit 46 and the rear slit 48 in the cancellation | release lever 20 is narrowed toward upper direction from the downward direction. Further, the distance between the front shaft 40 and the rear shaft 42 in the vehicle front-rear direction is the distance between the front slit 46 and the rear slit 48 in the vehicle front-rear direction at the upper end of the vehicle. As a result, when the release lever 20 moves right above, the front slit 46 and the rear slit 48 interfere with the front shaft 40 and the rear shaft 42. For this reason, the release lever 20 cannot be pulled up right above.

  Further, a lower wall portion 20F is formed near the lower portion of the upper wall portion 20E of the release lever 20, and an engaging portion 50 for engaging the wire 22 is formed at a substantially central portion of the lower wall portion 20F. ing.

  As shown in FIG. 1, a round bar 52 as a connecting portion of the release connecting member is fixed to the distal end portion of the wire 22, and the round bar 52 is arranged along the vehicle width direction in the longitudinal direction. In addition, a rectangular through hole 54 through which the round bar 52 can pass is formed in the engaging portion 50 of the release lever 20, and a slit-like notch 56 through which the wire 22 can pass through the front side portion of the through hole 54. Is formed toward the front of the vehicle. In addition, a pair of convex portions 58 that hold the round bar 52 in the engaged position are formed on the opening end portion of the notch 56 upward. That is, the round bar 52 passes through the through hole 54 from the lower side and rests on the upper surface of the lower wall portion 20F, and both longitudinal ends of the round bar 52 engage with the pair of convex portions 58. The wire 22 connected to the round bar 52 passes through the notch 56.

  As shown in FIG. 2, the end portion of the tube 60 through which the wire 22 is inserted is fixed to the bottom portion 30 </ b> F of the bezel 30 via an attachment member 62.

  Accordingly, as shown in FIG. 3, when the release lever 20 rotates upwardly of the vehicle (in the direction of arrow C in FIG. 3) with the rear shaft 42 as the rotation center, the circle engaged with the engagement portion 50 of the release lever 20. The rod 52 is rotated upward (in the direction of arrow C in FIG. 3) about the rear shaft 42 as a rotation center. For this reason, the wire 22 connected to the round bar 52 moves substantially forward (in the direction of arrow E in FIG. 3), and the release lever 24A of the lock device 24 connected to the wire 22 is pulled. Is to be canceled.

  As shown in FIG. 4, when the release lever 20 rotates forward of the vehicle about the front shaft 40 (in the direction of arrow D in FIG. 4), the round bar engaged with the engagement portion 50 of the release lever 20. 52 is configured to rotate forward of the vehicle (in the direction of arrow D in FIG. 4) with the front shaft 40 as the center of rotation. For this reason, the wire 22 connected to the round bar 52 moves substantially upward (in the direction of arrow F in FIG. 4), and the release lever 24A of the lock device 24 connected to the wire 22 is pulled. Is to be canceled.

  In addition, the front slit 46 and the rear slit 48 are symmetrical with respect to the center line Q (see FIG. 2) of the release lever 20 in a vehicle side view. For this reason, the amount of movement of the wire 22 when the release lever 20 is rotated forward is equal to the amount of movement of the wire 22 when the release lever 20 is rotated upward of the vehicle.

  Next, the operation of this embodiment will be described.

  In the present embodiment, the seat back 14 of the seat 10 in the normal use position (the state indicated by the solid line in FIG. 5) is directed to the vehicle front side (in the direction of arrow A in FIG. 5) that is in the direction of tilting with respect to the seat cushion 12. When rotating, the fingertip K2 is engaged with the rear notch 38 of the release lever 20 and the release lever 20 is pulled up, as shown by a two-dotted line in FIG. As a result, when the release lever 20 rotates about the front shaft 40 in the forward direction of the vehicle (in the direction of arrow D in FIG. 4), the round bar 52 engaged with the engagement portion 50 of the release lever 20 moves the front shaft 40. The vehicle rotates forward (in the direction of arrow D in FIG. 4) around the center of rotation. For this reason, the wire 22 connected to the round bar 52 moves substantially upward (in the direction of arrow F in FIG. 4), and the release lever 24A of the lock device 24 connected to the wire 22 is pulled. The seat back 14 can be rotated.

  As a result, the release lever 20 is continuously rotated forward of the vehicle (in the direction of arrow D in FIG. 4), which is the direction in which the seat back is tilted, so that the seat back 14 is rotated forward of the vehicle (in the direction of arrow A in FIG. 5). be able to.

  On the other hand, the seat back 14 of the seat 10 in the tilted position (state indicated by a two-dot chain line in FIG. 5) is rotated toward the vehicle upper side (in the direction of arrow B in FIG. 5) which is the raising direction with respect to the seat cushion 12. In this case, the fingertip K1 is engaged with the front notch 36 of the release lever 20 and the release lever 20 is pulled up, as indicated by a two-dotted line in FIG. Thereby, when the release lever 20 rotates about the rear shaft 42 in the upper direction of the vehicle (in the direction of arrow C in FIG. 3), the round bar 52 engaged with the engagement portion 50 of the release lever 20 is moved to the rear shaft. Rotate upward of the vehicle (in the direction of arrow C in FIG. 3) with 42 as the center of rotation. For this reason, the wire 22 connected to the round bar 52 moves substantially forward (in the direction of arrow E in FIG. 3), and the release lever 24A of the lock device 24 connected to the wire 22 is pulled. The seat back 14 can be rotated.

  As a result, the release lever 20 is continuously rotated upward (in the direction of arrow C in FIG. 3), which is the seat back raising direction, so that the seat back 14 is rotated upward (in the direction of arrow B in FIG. 5). Can be made.

  That is, in this embodiment, the rotation direction of the seat back 14 and the operation direction of the release lever 20 for releasing the lock of the seat back 14 are the same direction. As a result, the operability of both the case where the seatback 14 is tilted and the case where the seatback 14 is raised is improved.

  In this embodiment, the front shaft 40 provided on the bezel 30 is inserted into the front slit 46 formed on the release lever 20, and the rear shaft 42 provided on the bezel 30 is inserted into the rear slit 48 formed on the release lever 20. With this simple configuration, the rotation direction of the seat back 14 and the operation direction of the release lever 20 for releasing the lock of the seat back 14 can be made the same direction.

  Next, an occupant seat according to a second embodiment of the invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 6 is a perspective view of an occupant seat according to a second embodiment of the present invention viewed from the front outer side of the vehicle.

  As shown in FIG. 6, in the present embodiment, the front shaft 40 extends in the vehicle width direction at the front lower portion of the vehicle width direction outer side wall portion 20C and the front lower portion of the vehicle width direction inner wall portion 20D of the release lever 20. The rear shaft 42 extends along the vehicle width direction in the vehicle width direction between the rear lower portion of the vehicle width direction outer wall portion 20C and the rear lower portion of the vehicle width direction inner wall portion 20D of the release lever 20. It has been handed over.

  On the other hand, a front slit 46 is formed in the front portion of the vehicle width direction outer side wall portion 30D in the bezel 30 and the front portion of the vehicle width direction inner side wall portion 30E, and the rear portion of the bezel 30 in the vehicle width direction outer side wall portion 30D. A rear slit 48 is formed at the rear of the vehicle width direction inner wall portion 30E. Further, both longitudinal end portions 40A of the front shaft 40 are inserted into the left and right front slits 46 so as to be relatively movable, and the longitudinal end portions 42A of the rear shaft 42 are relatively movable to the left and right rear slits 48. It is inserted.

  Therefore, also in this embodiment, the same effect as the first embodiment can be obtained.

  Next, an occupant seat according to a third embodiment of the invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 7 is a perspective view of the left side seat of the vehicle to which the occupant seat according to the third embodiment of the present invention is applied, as viewed from the front outer side of the vehicle.

  As shown in FIG. 7, in the present embodiment, a bezel 30 is provided on an upper portion of a projecting portion 14 </ b> D formed toward an outer side in the vehicle width direction on an upper portion of the outer wall portion 14 </ b> C in the vehicle width direction of the seat back 14. A gripping portion 20G extends from the release lever 20 provided inside the bezel 30 toward the upper side of the vehicle.

  Therefore, also in this embodiment, the same effect as the first embodiment can be obtained. Further, in the present embodiment, by gripping the grip portion 20G of the release lever 20, the seat back 14 is tilted with respect to the seat cushion 12 from the normal use position (the state shown in FIG. 7) as in the first embodiment. The vehicle can be rotated forward from the vehicle (in the direction of arrow A in FIG. 7) and upward from the tilted position (not shown). For this reason, the operability of both the case where the seatback 14 is tilted and the case where the seatback 14 is raised is further improved.

  Next, an occupant seat according to a fourth embodiment of the invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 8 is a perspective view of an occupant seat according to the fourth embodiment of the present invention viewed from the front outer side of the vehicle. FIG. 9 is an enlarged cross-sectional view taken along the line 9-9 in FIG.

  As shown in FIGS. 8 and 9, in this embodiment, a slit 70 is formed as a connecting portion supporting means in the engaging portion 50 of the lower wall portion 20 </ b> F of the release lever 20. The slit 70 is arranged along the longitudinal direction of the vehicle in the longitudinal direction. Further, both longitudinal end portions 52A of the round bar 52 are engaged with both peripheral portions along the longitudinal direction of the slit 70, and the round bar 52 is movable in the vehicle front-rear direction along the slit 70. Yes.

  Accordingly, as shown in FIG. 10, when the release lever 20 rotates upwardly in the vehicle (in the direction of arrow C in FIG. 10) with the rear shaft 42 as the rotation center, the circle engaged with the engagement portion 50 of the release lever 20. The rod 52 rotates upward (in the direction of arrow C in FIG. 10) with the rear shaft 42 as the center of rotation.

  At this time, the round bar 52 moves along the slit 70 in the direction of the rear shaft 42 (in the direction of arrow G in FIG. 10) which is the rotation center side, and reaches the rear end 70A of the slit 70. As a result, the ratio L2 / L1 of the distance L2 between the front end portion of the release lever 20 and the rear shaft 42 with respect to the distance L1 between the round bar 52 and the rear shaft 42 gradually increases. In the configuration where the round bar 52 does not move toward the rear shaft 42 (first embodiment), the ratio L2 / L1 does not increase (is constant). For this reason, the operating force of the release lever 20 for moving the wire 22 connected to the round bar 52 substantially forward (in the direction of arrow E in FIG. 10) is smaller than that in the first embodiment. For example, in FIG. 9, when the distance between the round bar 52 and the rear shaft 42 is N1, and L1: L2: N1 = 1: 4: 2, the lever ratio for starting the operation of the release lever 20 is 2: 1. However, at the final stage of operation, the lever ratio is 4: 1.

  Similarly, as shown in FIG. 11, when the release lever 20 rotates forward of the vehicle about the front shaft 40 (in the direction of arrow D in FIG. 11), the circle engaged with the engagement portion 50 of the release lever 20. The rod 52 rotates forward of the vehicle (in the direction of arrow D in FIG. 11) with the front shaft 40 as the center of rotation.

  At this time, the round bar 52 moves along the slit 70 in the direction of the front shaft 40 that is the rotation center side (in the direction of arrow H in FIG. 11) and reaches the front end 70B of the slit 70. As a result, the ratio L4 / L3 of the distance L4 between the rear end portion of the release lever 20 and the front shaft 40 with respect to the distance L3 between the round bar 52 and the front shaft 40 gradually increases. In the configuration in which the round bar 52 does not move toward the front shaft 40 (first embodiment), the ratio L4 / L3 does not increase (is constant). For this reason, the operating force of the release lever 20 for moving the wire 22 connected to the round bar 52 substantially upward (in the direction of arrow F in FIG. 11) is smaller than that in the first embodiment. For example, in FIG. 9, when the distance between the round bar 52 and the front shaft 40 is N2, and L3: L4 = 1: 4: 2, the lever ratio at the start of operation of the release lever 20 is 2: 1. At the final stage of operation, the lever ratio is 4: 1.

  As a result, in this embodiment, the same operational effects as in the first embodiment can be obtained, and the operating force of the release lever 20 can be reduced, so that the operability is further improved.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in each of the above-described embodiments, the wire 22 is used as the release connecting member. However, another release connecting member such as a link may be used instead of the wire 22.

  Further, in each of the above embodiments, the box-shaped bezel 30 having an upper opening is used as the operating member rotating means. However, instead of the bezel 30, the release lever 20 is rotatably supported and the seat in the release lever 20 is used. If the configuration is such that the wire 22 is moved and the locking device 24 is moved from the locked state to the unlocked state by either the rotation of the back 14 in the tilting direction or the rotation in the raising direction, the bag 14 is mounted in parallel to the seat back 14. Other operating member rotating means such as the two plate members obtained may be used.

  In each of the above embodiments, the pair of guide means is the front slit 46 and the rear slit 48, but instead of the front slit 46 and the rear slit 48, one of the front shaft 40 and the rear shaft 42 is replaced with the other. Any other guide means can be used as long as the release lever 20 can be rotated in either the tilting direction or the raising direction of the seat back 14 by supporting each other along a circular arc centered on the axis of the seatback 14. It may be.

  In the third embodiment, the connecting portion supporting means is the slit 70 formed in the lower wall portion 20F of the release lever 20, but instead of the slit 70, the round bar 52 connected to the wire 22 is replaced with the release lever 20. Any other connecting portion supporting means may be used as long as it is supported so as to be movable from the central portion to the rotation center side of the release lever 20.

  In each of the above embodiments, the present invention is applied to the seat 10 that rotates the seat back 14 in the vehicle front-rear direction. However, the present invention is also applied to a seat that rotates the seat back in the vehicle width direction other than the vehicle front-rear direction. It is.

  In each of the above embodiments, the release member is moved by the operation member to rotate the seat back rotation prevention means by either the rotation of the operation member in the seat back tilting direction or the rotation of the seat back in the raising direction. As a configuration for moving from the locked state to the unlocked state, a front slit 46 and a rear slit 48 as a pair of guide members are formed in one of the release lever 20 and the bezel 30, and a front shaft 40 as a pair of shaft members is formed in the other. And the rear shaft 42, but instead of the pair of shaft members and the pair of guide members, rotation of the operation member in the tilting direction of the seat back and the seat by a cam, link, etc. provided in the operation member rotating means Whether the seat back rotation prevention means is locked by moving the release connecting member by the operating member by any of the rotation in the raising direction of the back. It may be configured to move to the unlocked state.

It is the perspective view seen from the vehicles front outside which shows the crew seat concerning a 1st embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view taken along a line 2-2 in FIG. FIG. 6 is an enlarged cross-sectional view taken along a 3-3 cross-sectional line in FIG. 5 for explaining the operation of the passenger seat according to the first embodiment of the present invention. FIG. 6 is an enlarged cross-sectional view taken along the line 4-4 in FIG. 5 for explaining the operation of the occupant seat according to the first embodiment of the present invention. It is the perspective view seen from the vehicles front outside which shows the seat of the vehicles left side to which the crew member seat concerning a 1st embodiment of the present invention is applied. It is the perspective view seen from the vehicle front outer side which shows the passenger | crew seat which concerns on 2nd Embodiment of this invention. It is the perspective view seen from the vehicle front outer side which shows the vehicle left side vehicle to which the passenger | crew seat which concerns on 3rd Embodiment of this invention is applied. It is the perspective view seen from the vehicle front outer side which shows the passenger | crew seat which concerns on 4th Embodiment of this invention. It is an expanded sectional view which followed the 9-9 sectional line of FIG. It is sectional drawing corresponding to FIG. 3 explaining the effect | action of the passenger | crew seat which concerns on 4th Embodiment of this invention. It is sectional drawing corresponding to FIG. 4 explaining the effect | action of the passenger | crew seat which concerns on 4th Embodiment of this invention.

Explanation of symbols

10 seats (passenger seats)
12 Seat cushion 14 Seat back 20 Release lever (operation member)
22 Wire (Release connecting member)
24 Locking device (seat back rotation prevention means)
30 Bezel (operating member rotating means)
40 Front shaft (shaft member)
42 Rear shaft (shaft member)
46 Front slit (guide means)
48 Rear slit (guide means)
50 engaging portion 52 round bar (connecting portion of release connecting member)
70 Slit (connector support means)

Claims (3)

A seat back that is rotatable in a tilting direction and a raising direction with respect to the seat cushion;
A seat back rotation preventing means provided on the seat back to prevent rotation of the seat back in a locked state and to enable rotation of the seat back in an unlocked state;
An operation member provided on the seat back and rotatable in a tilting direction and a raising direction of the seat back;
A release connecting member that connects the seat back rotation preventing means and the operating member;
The operation member is provided on the seat back and rotatably supports the operation member, and the operation member causes the rotation of the operation member in the tilting direction of the seat back and the rotation of the seat back in the raising direction. An operation member rotating means for moving the release connecting member and moving the seat back rotation preventing means from the locked state to the unlocked state;
An occupant seat characterized by comprising:   The operation member rotating means includes a pair of shaft members that are provided in parallel to each other on both sides of a central portion of the operation member to which the release connecting member is connected, and support the operation member on the operation member rotating means, By supporting the one shaft member movably with respect to each other along an arc centered on the other shaft member, the operation member can be rotated in either the seat back tilting direction or the seat back raising direction. 2. The guide means according to claim 1, wherein the operation member includes the other of the pair of shaft members and the pair of guide means. An occupant seat as described in 1.   The operating member rotating means includes connecting portion support means for supporting the connecting portion of the release connecting member so as to be movable from the central portion of the operating member to the rotation center side of the operating member being rotated. The passenger seat according to claim 1 or 2.

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