JP4065396B2 - Tensioner device for attitude control wire in retractable vehicle seat device - Google Patents

Description

[0001]
【Technical field】
The present invention relates to a tensioner device for a posture control wire in a retractable vehicle seat device.
[0002]
[Prior art and its problems]
A vehicle seat device in which a seat installation surface and a storage recess located in front of the seat installation surface are provided on a floor surface in the vehicle, and a seat installed on the seat installation surface can be stored in the storage recess. Conventionally known (for example, Patent Document 1). In this vehicle seat device, the seat includes a seat portion, a backrest that is rotatable about an axis in the left-right direction with respect to the seat portion, and front and rear legs. It is possible to transform into a use posture in which the front and rear leg portions are orthogonal to the seat portion and a folding posture in which the backrest and the front and rear leg portions are folded to the seat portion side.
The front leg of the seat is fixed to the tip of a rotating rod pivotally attached to the floor surface so as to be rotatable about a left-right axis, and the rotating rod is rotated to the rear rotating end, When the seat is in the use posture, the seat stands on the seat installation surface, and when the seat is folded by turning the pivot rod to the forward pivot end, the seat is stored in the storage recess.
[0003]
In this vehicle seat device, when the seat is moved between the seat installation surface and the storage recess, the seat cannot be smoothly moved to the seat use position or the storage position unless the seat posture is controlled. End up.
In order to avoid such a situation, both ends of the attitude control wire are fixed to the seat portion of the seat and the inner surface of the storage recess. This posture control wire extends straight while receiving a tension from the seat and the storage recess while the seat is moving between the seat installation surface and the storage recess, and controls the posture of the seat by the tension at that time. Is.
[0004]
However, since the posture control wire is slackened in the left-right direction when the seat is in the seat installation surface and the storage recess, the posture control wire may be entangled with other members located on the left and right sides of the posture control wire.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-32410
[0006]
OBJECT OF THE INVENTION
The present invention relates to an attitude control wire in a retractable vehicle seat apparatus in which the attitude control wire is slackened in the left-right direction of the vehicle and is not entangled with other members when the seat is in the seat installation surface and the storage recess. The purpose is to obtain a tensioner device.
[0007]
SUMMARY OF THE INVENTION
A tensioner device for a posture control wire in a retractable vehicle seat device according to the present invention includes: a seat use position where a vehicle seat is placed on a seat installation surface provided on the floor surface around a vehicle's horizontal axis; And can be pivotally moved to a storage position stored in a storage recess recessed in the floor surface, and the sheet is positioned between the sheet use position and the storage position between the sheet and the floor surface, respectively. In a retractable vehicular seat device in which a posture control wire is stretched to control the posture of the seat that is extended while rotating between the seat use position and the retracted position, A tensioner arm that is pivotally mounted around a direction axis and that is formed with a wire locking portion that locks an intermediate portion of the posture control wire. It is characterized in that is offset from a straight line connecting both ends of the attitude control wire. Thus, when the wire locking portion of the tensioner device is offset from a straight line connecting both ends of the posture control wire in plan view, the posture control wire is pulled in the left-right direction by the wire locking portion, and as a result, the posture control wire Since the slack in the left-right direction is removed, the posture control wire is not entangled with the other members on the left and right.
[0008]
The wire locking portion is preferably a wire insertion hole through which the posture control wire is inserted. Thus, if the wire locking portion is a wire insertion hole, the posture control wire can be reliably locked.
[0009]
The tensioner arm is pivotally attached to the seat so as to be rotatable about a first axis in the vehicle left-right direction, and is rotatable on a second axis parallel to the first axis on the first tensioner arm. A second tensioner arm pivotally attached to the wire locking portion, and when the lower end of the second tensioner arm comes into contact with the vehicle floor, the first tensioner arm is It is preferable that the first tensioner arm is rotated with respect to the seat about one axis, and the first tensioner arm is rotated with respect to the second tensioner arm about the second axis. Further, when the lower end portion of the second tensioner arm comes into contact with the vehicle floor surface, the second tensioner arm rotates about a contact point with the vehicle floor surface, and the axis of the second tensioner arm is vertical. You may make it incline with respect to a line. In this way, even if the lower end of the second tensioner arm contacts the vehicle floor surface, the first tensioner arm (and the second tensioner arm) rotates about the first axis and the second axis. The impact force generated between the floor surface and the second tensioner arm is absorbed. Therefore, the vehicle floor and the second tensioner arm are not damaged.
[0010]
Furthermore, it is preferable that the second axis on the first tensioner arm is offset from a vertical line passing through the first axis in the free-hanging state of both arms. In this way, the first tensioner arm (and the second tensioner arm) always rotates regardless of the contact angle between the second tensioner arm and the vehicle floor.
[0011]
The first tensioner that rotates relative to the second axis to increase the opening angle when the attitude control wire extends between the first tensioner arm and the second tensioner arm. It is preferable to provide a stopper mechanism that holds the arm and the second tensioner arm in a linear state as a whole. In this case, the first tensioner arm and the second tensioner arm automatically return to the linear state while the seat is rotating between the seat use position and the storage position, so the first tensioner arm and the second tensioner arm The urging member for returning to a straight state becomes unnecessary.
[0012]
Further, one end portion of the posture control wire is pivotally attached to the seat so as to be rotatable around a vehicle left-right axis, and the tensioner arm is fixed to one end portion of the posture control wire, whereby the tensioner It is practical that the arm is rotatable with respect to the seat.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the floor surface 3 in the vehicle 1 is provided with a seat installation surface 3a for installing the seat S and a storage recess 3b located immediately after the seat installation surface 3a. ing. On the seat installation surface 3a, four strikers 5 and 7 that face in the up-down direction are projected side by side as a pair of left and right, and one vertical direction is formed at the center of the bottom surface 3b1 of the storage recess 3b. A striker 9 that faces is projected. Further, a pair of left and right support brackets 11 having a substantially inverted U shape when viewed from the side are fixed to the front end portion of the bottom surface 3b1 of the storage recess 3b, and the left and right support brackets 11 have a rotating shaft 13 facing in the left-right direction. Both left and right end portions of the are rotatably supported. A rotating rod 15 having a substantially L shape in side view extends from both left and right end portions of the rotating shaft 13, and a plurality of reinforcing members (not shown) in which the middle portions of the left and right rotating rods 15 face in the left-right direction. Are connected by The rotating rod 15 is in contact with the front wall 3b2 of the recess 3b for storage and stands on the front surface 3b1 (see the solid line in FIG. 2), and on the rear rotating end (see the solid line in FIG. 2). (See the phantom line in FIG. 2).
[0014]
The lower ends of the rear legs 17 forming a part of the sheet S are fixed to the front ends of the left and right rotating rods 15 by screws. The upper end portions of the left and right rear legs 17 are pivotally attached to the rear end portions of the frame 21 embedded in the seat portion 19 and facing the left and right front-rear direction so as to be rotatable about a left and right axis. The leg 17 can rotate between a use position indicated by a solid line in FIG. 2 and a folding position indicated by an imaginary line in FIG. A notch 17 a is formed at the lower end of the rear leg 17, and a lock mechanism 19 that can be engaged with and disengaged from the rear striker 7 is provided in the vicinity of the notch 17 a of the rear leg 17.
As shown in FIGS. 3 to 5, the lock mechanism 19 is rotatable about a left and right axis with respect to the rear leg 17, and is constantly urged to rotate counterclockwise in FIGS. 3 to 5 by a spring 22. Further, the latch 23 having the engaging groove 23a, the arm portion 23b, and the engaging portion 23c, and rotatable about the axis in the left-right direction, are always urged to rotate clockwise by the spring 25 in FIGS. The lock member 27 includes an operation wire W1 having one end fixed to the lock member 27.
[0015]
The lock member 27 includes a contact portion 27a located on the same plane as the latch 23, and an attachment portion 27b that is located on the side of the contact portion 27a and the latch 23 and does not interfere with the latch 23. One end of the operation wire W1 is fixed to the attachment portion 27b.
In this lock mechanism 19, the latch 23 is always located at the non-engagement position shown in FIG. 4 due to the urging force of the spring 22, and the arm portion 23b of the latch 23 is located at a position avoiding the entrance of the notch portion 17a. The striker 9 can enter the notch 17a. When the striker 9 enters the cutout portion 17a and engages with the engagement groove 23a, the striker 9 rotates the latch 23 in the clockwise direction in FIG. 4, and the latch 23 presses the contact portion 27a of the lock member 27. Then, the lock member 27 is rotated counterclockwise in FIG. When the latch 23 further rotates in the clockwise direction, the engaging portion 23c of the latch 23 and the abutting portion 27a of the locking member 27 are engaged, and at that moment, the locking member 27 stops rotating, and the latch 23 is shown in FIG. Held in the engaged position. When the latch 23 is held in the engagement position, the arm portion 23b of the latch 23 is engaged with the striker 9 to block the entrance of the notch 17a, and the striker 9 cannot be pulled out from the notch 17a. Locked to.
When the operation wire W1 is pulled from this state and the lock member 27 is rotated counterclockwise, the engagement between the contact portion 27a of the lock member 27 and the engagement portion 23c of the latch 23 is released, and the latch 23 is The arm portion 23b is retracted from the entrance of the notch 17a by the biasing force, and the engagement between the latch 23 and the striker 9 is released (see FIG. 4), so that the striker 9 escapes from the notch 17a. It becomes possible.
[0016]
The upper ends of a pair of left and right front legs 29 are pivotally attached to the front end portions of the left and right frames 21, respectively, so that the front legs 29 can be rotated around an axis in the left-right direction. 2 can be rotated between a folding position indicated by a virtual line. A notch 29 a is formed at the lower end of the front leg 29, and a lock mechanism 31 that can be engaged with and disengaged from the front striker 5 is provided in the vicinity of the notch 29 a of the front leg 29. The lock mechanism 31 is similar to the lock mechanism 19 of the rear leg 17 and includes various components (spring 33, latch 35, spring 37, lock member 39, and contact portion 39a. The latch 35 is engaged. The shape of the groove 35a, the arm portion 35b, and the engaging portion 35c) is slightly different from that of the rear leg 17, but the function of each component is the same as that of the rear leg 17. One end of the operation wire W2 is fixed to the lock member 35 of the front leg 29.
[0017]
Respective front end portions of a pair of left and right link members 41 facing substantially in the front-rear direction are pivotally attached to upper end portions of the left and right front legs 29 so as to be rotatable about a left and right axis. Each rear end portion is pivotally attached to the upper end portion of each of the left and right rear legs 17 so as to be rotatable about a horizontal axis. The front leg 29 and the rear leg 17 coupled by the link member 41 rotate while being synchronized. When the front leg 29 moves to the use position, the rear leg 17 also moves to the use position, and when the front leg 29 moves to the folded position, the rear leg 17 Also move to the folding position.
Further, the base end portion of the cylinder 43a of the gas spring 43 is pivotally attached to the upper end portion of the left front leg 29 so as to be rotatable about the left and right axis, and the distal end portion of the movable rod 43b of the gas spring 43 is The left rear leg 17 is pivotally attached to the middle portion in the vertical direction so as to be rotatable about a left-right axis. The gas spring 43 constantly urges the movable rod 43b in a direction protruding from the cylinder 43a.
[0018]
An engaging member 45 that can be engaged with and disengaged from the striker 9 provided in the storage recess 3b is pivotally attached to the center of the lower surface of the seat portion 19 in the front-rear direction so as to be rotatable about a left-right axis. The engaging member 45 can rotate between an engaging position (position in FIG. 2) and a retracted position (not shown) in which the tip of the engaging member 45 approaches the lower surface of the seat portion 19. The tension spring 47 provided between the lower surface of the portion 19 is normally biased toward the engagement position. Further, one end of the operation wire W3 is fixed to the engagement member 45, and when the operation wire W3 is pulled, the engagement member 45 rotates toward the retracted position.
[0019]
A lower end portion of a backrest 49 is pivotally attached to the rear end portion of the seat portion 19 so as to be rotatable about a left-right axis. The backrest 49 is in an upright position indicated by a virtual line in FIG. It can be rotated to an arbitrary position between the folding position (see FIG. 1) that contacts the upper surface of the sheet. As shown in FIG. 2, one end of the operation wire W <b> 4 is fixed to the backrest 49.
[0020]
The seat S includes the seat 19, the front leg 29, the rear leg 17, and the backrest 49, and the seat S stands up with respect to the seat 19, and the front leg 29 and the back The use posture in which the legs 17 are located at the use position and the folding posture in which all of the backrest 49, the front legs 29 and the rear legs 17 are located in the folding positions can be transformed.
[0021]
Engagement of the operation wire W3 linked to the engagement member 45, the end of each of the operation wires W1, W2 linked to the lock mechanisms 19, 31 of the rear leg 17 and the front leg 29 on the opposite side of the lock mechanisms 19, 31 The end portion on the opposite side to the member 45 and the end portion on the opposite side to the backrest 49 of the operation wire W4 connected to the backrest 49 are all provided in the seat portion 19 (see FIG. 8). 51 is connected.
[0022]
As shown in FIG. 9, the lock operation force transmission mechanism 51 includes a switching lever 53, a pressing lever 55, and a lock release lever 57 that are rotatable around a vertical axis.
A long hole 53b is formed in the switching lever 53 that is rotatable around the rotation shaft 53a. The switching lever 53 is rotated from the non-operation position shown in FIG. 9 to the clockwise direction in FIG. It can be rotated between the operating position (not shown) and is always in the non-operating position by the biasing force of the spring 59. An end of the operation wire W4 extending from the backrest 49 is fixed to the switching lever 53.
One end of the operation wire W5 is fixed to the pressing lever 55 that is rotatable around the rotation shaft 55a, and the other end of the operation wire W5 is connected to a release switch (not shown) provided on the side surface of the seat portion 19. ing. The pressing lever 55 can rotate between the non-operating position shown in FIG. 9 and the operating position (not shown) rotated counterclockwise in FIG. 9 from the non-operating position. When the release switch is pressed, the pressing lever 55 moves to the operating position against the urging force of the spring 63. Further, a long hole 55 b is formed in the pressing lever 55, and a connecting pin 65 is inserted through the overlapping portion of the long hole 55 b and the long hole 53 b of the switching lever 53.
A lock release lever 57 that can rotate around a rotation shaft 55 a common to the pressing lever 55 includes end portions of operation wires W 1 and W 2 extending from the lock mechanisms 19 and 31 of the rear leg 17 and the front leg 29, and an engagement member 45. An end portion of the extending operation wire W3 is fixed, and a pressing surface 57a that can contact and separate from the connecting pin 65 is formed. The lock release lever 57 can rotate between a lock position shown in FIG. 9 and a lock release position (not shown) rotated counterclockwise in FIG. 9 from the lock position. Due to the biasing force, it is always in the locked position.
[0023]
The lock operation force transmission mechanism 51 operates as follows.
When the backrest 49 is in the standing position, the operation wire W4 is not pulled, and the switching lever 53 is in the non-operating position. At this time, since the connecting pin 65 is separated from the pressing surface 57a of the unlocking lever 57, the connecting pin 65 does not press the pressing surface 57a and is unlocked even if the pressing switch 55 is moved to the operating position by pressing the release switch. The lever 57 remains in the locked position. For this reason, when the backrest 49 is in the upright position, the locking mechanisms 31 and 19 of the front legs 29 and the rear legs 17 and the strikers 5 and 7 cannot be released, and the engagement between the engaging member 45 and the striker 9 cannot be released.
When the backrest 49 is moved to the folding position, the operation wire W4 is pulled, the switching lever 53 is moved to the operating position, and the connecting pin 65 is moved inside the elongated hole 55b toward the rotating shaft 55a of the pressing lever 55. The connecting pin 65 comes into contact with the pressing surface 57a. When the release switch is pushed in this state to move the pressing lever 55 to the operating position, the connecting pin 65 pushes the pressing surface 57a, the unlocking lever 57 moves to the unlocking position, and pulls the operation wires W1, W2, and W3. Therefore, the lock mechanisms 19 and 31 of the rear leg 17 and the front leg 29 and the strikers 5 and 7 are locked, and the engagement of the engagement member 45 and the striker 9 is released.
[0024]
Thus, the lock operating force transmission mechanism 51 invalidates the operation of the release switch when the backrest 49 is in the upright position, and enables the operation of the release switch when the backrest 49 is in the folded position. When the drooping 49 is in the standing position, the locking mechanisms 31 and 19 of the front legs 29 and rear legs 17 and the strikers 5 and 7 are not unlocked, and the locking mechanisms 31 and 19 are not inadvertently unlocked when seated. It is.
[0025]
A mounting shaft 67 (first shaft) (see FIG. 11) facing in the left-right direction is provided at the front end of the frame 21 on the right side of the seat portion 19, and this mounting shaft 67 is connected to one end of the attitude control wire W6. A fixed fixture 69 is pivotally mounted around the attachment shaft 67 so as to be rotatable. The other end of the attitude control wire W6 is fixed to a bracket 71 fixed to the front wall 3b2 of the storage recess 3b via a fixing metal 73.
[0026]
Further, a tensioner device 79 including a first tensioner arm 75 and a second tensioner arm 77 is attached to the fixing bracket 69.
The first tensioner arm 75 includes a main body 75a fixed to the fixing bracket 69, a protruding piece 75b extending rearward from the lower end of the main body 75a, and a locking piece (stopper mechanism) 75c extending laterally from the lower end of the protruding piece 75b. It is equipped with. The upper end portion of the main body 75a faces in the up / down direction, the middle portion of the main body 75a faces substantially in the left / right direction, and the lower end portion of the main body 75a faces in the up / down direction. Further, the first tensioner arm 75 is elastically deformable in the left-right direction.
The second tensioner arm 77 has a configuration in which a protruding piece (stopper mechanism) 77b facing rearward is provided at the upper end of the main body 77a. The upper end portion of the main body 77a is directed in the vertical direction, the intermediate portion is directed substantially in the left-right direction, and the lower end portion is substantially directed in the vertical direction.
[0027]
The tip of the projecting piece 75b of the first tensioner arm 75 and the tip of the projecting piece 77b of the second tensioner arm 77 are overlapped in the plate thickness direction of both the tensioner arms 75 and 77, and the two projecting pieces 75b and 77b The tip portions are pivoted by a pin (second shaft) 81. Further, a posture control wire W6 is inserted into a wire insertion hole (wire locking portion) 77c drilled in the lower end portion of the second tensioner arm 77, and as shown in FIG. The posture control wire W6 is offset to the side of the straight line A passing through both ends of the posture control wire W6.
[0028]
Next, the operation of the sheet S configured as above will be described.
When the seat S is in a folded posture and the pivot rod 15 is positioned at the rear pivot end, the entire seat S is positioned in the storage recess 3b and the lower surface of the seat portion 19 is for storage. It is located at the retracted position in contact with the bottom surface 3b1 of the recess 3b. At this time, since the engaging member 45 engages with the striker 9, the sheet S cannot move from the storage position.
When the backrest 49 is in the folded position in this way, the operation wire W4 extending from the backrest 49 is in a pulled state, and the switching lever 53 of the lock operation force transmission mechanism 51 is in the operating position, so that the release is performed. When the switch is pressed, the lock release lever 57 of the lock operation force transmission mechanism 51 rotates, and the operation wires W3, W2, and W1 connected to the engagement member 45, the front leg 29, and the rear leg 17 are pulled. Then, the engaging member 45 moves to the retracted position, and the locking members 39 and 27 of the locking mechanisms 31 and 19 of the front leg 29 and the rear leg 17 rotate counterclockwise. When the engagement member 45 moves to the retracted position, the engagement between the engagement member 45 and the striker 9 is released, so that the rotation rod 15 can be rotated forward.
[0029]
After the engagement member 45 and the striker 9 are disengaged, when the seat S is moved to the seat use position side by turning the turning rod 15 forward, the rear leg 17 is moved to the frame 21 by the biasing force of the gas spring 43. It rotates in the direction to increase the opening angle between. If the position of the seat 19 is not controlled during the rotation of the seat S to the seat use position side, the front end of the seat 19 is greatly lifted upward with respect to the rear end. The opening angle of the rear leg 17 becomes larger than that in the use posture. If the seat S is moved to the seat use position in this state, the lower end of the front leg 29 collides with the floor surface 3 in the vehicle 1 and the lock mechanism 31 and the striker 5 of the front leg 29 are damaged.
For this reason, when the posture of the rotating seat portion 19 is not controlled at all, when the seat S reaches the vicinity of the seat use position, the user resists the urging force of the gas spring 43 and the front end portion of the seat portion 19. Must be pressed downward with a strong force to return the seat 19 to a substantially horizontal state.
[0030]
However, in the present embodiment, when the seat S reaches the vicinity of the storage position that is a predetermined distance away from the storage position toward the seat use position, tension is applied to the relaxed posture control wire W6 from the storage recess 3b and the seat portion 19. The attitude control wire W6 is straightened. The posture control wire W6 maintains a straight state until the sheet S reaches the vicinity of the sheet use position that is a predetermined distance away from the sheet use position to the storage position side. 19 is maintained in a substantially horizontal state, and the front leg 29 and the rear leg 17 move to the vicinity of the use position.
When the seat S further approaches the seat use position side, the posture control wire W6 is loosened, so that the user holds the seat 19 by pressing the front end portion of the seat portion 19 downward only in the short section of the seat use position from the vicinity of the seat use position. 19 is maintained in a substantially horizontal state, and the sheet S is moved to the sheet use position as it is.
When the seat S reaches the seat use position, the front leg 29 and the rear leg 17 are located at the use position, the front striker 5 enters the notch 29a at the lower end of the front leg 29, and the lower end of the rear leg 17 is reached. The rear striker 7 enters the cutout portion 17a of the portion, the corresponding strikers 5, 7 and the latches 35, 23 are engaged with each other, and the sheet S is held at the sheet use position.
Thereafter, when the backrest 49 is raised, the seat S is in a use posture, and the user can be seated.
[0031]
Further, when the backrest 49 is returned to the folded position from this state and the operation of the release switch is enabled, and then the release switch is operated, the lock members 39 and 27 of the front leg 29 and the rear leg 17 are rotated counterclockwise in the figure. The latches 35 and 23 are rotated and returned to the non-engagement positions, so that the strikers 5 and 7 and the latches 35 and 23 are disengaged. Thereafter, when the seat portion 19 is pressed rearward, the rotating rod 15 rotates rearward, and the seat S moves toward the storage position.
[0032]
When the sheet S is stored in the storage recess 3b, it is necessary to fold the front leg 29 and the rear leg 17 to the seat 19 side with the seat 19 being in a substantially horizontal state. If the posture of the seat portion 19 is not controlled at all during rotation, the front end portion of the seat portion 19 floats upward relative to the rear end portion, and the frame 21 and the rear leg 17 remain at a large opening angle. The sheet S reaches the vicinity of the storage position. For this reason, when the posture of the seat portion 19 is not controlled at all, when the seat S reaches the vicinity of the storage position, the user faces the front end portion of the seat portion 19 downward against the biasing force of the gas spring 43. It is necessary to return the seat portion 19 to a substantially horizontal state by pressing it with a strong force, and to move the front legs 29 and the rear legs 17 to the vicinity of the folding position, resulting in poor operability when the seat is stored.
[0033]
However, in the present embodiment, while the seat S is moving from the vicinity of the seat use position to the vicinity of the storage position, tension is applied to the posture control wire W6 from the storage recess 3b and the seat portion 19, and the posture control wire W6 that has been slackened straightly. Therefore, when the seat S reaches the vicinity of the storage position, the seat portion 19 automatically becomes substantially horizontal, and the front leg 29 and the rear leg 17 automatically move to the vicinity of the folding position. When the seat S is further moved closer to the storage position side, the posture control wire W6 is loosened and no pulling force is applied to the seat portion 19 from the posture control wire W6, so that the user presses the front end portion of the seat portion 19 downward. Thus, the seat 19 is held in a substantially horizontal state, and the sheet S is moved to the storage position as it is. When the sheet S reaches the storage position, the lower surface of the seat portion 19 comes into contact with the bottom surface 3b1 of the storage recess 3b, and the engagement member 45 engages with the striker 9, so that the sheet S is held at the storage position.
[0034]
By providing the posture control wire W6 in this way, when the sheet S is moved to the seat use position and the storage position, the user pushes the front end portion of the seat portion 19 downward to bring the seat portion 19 into a substantially horizontal state. Since there is no need to return, the burden on the user is small compared to the case where the attitude control wire W6 is not provided, and the operability of the seat S is good.
[0035]
As described above, the attitude control wire W6 is useful for the sheet S. However, when the sheet S reaches the vicinity of the sheet use position from the storage position side, the attitude control wire W6 is loosened in the left-right direction. May be entangled with other members located on the left and right. The tensioner device 79 solves such a problem.
That is, as shown in FIGS. 10 to 13, when the sheet S is in a use posture at the sheet use position, the projecting piece 77 b comes into contact with the locking piece 75 c, so that the first tensioner arm 75 and the second tensioner arm 77 is directed in the same direction, and the tensioner device 79 is linear as a whole. Further, since the wire insertion hole 77c of the tensioner device 79 is offset laterally with respect to the straight line A, the posture control wire W6 is pulled in the left-right direction by the wire insertion hole 77c, and as a result, the posture control wire W6. Left and right direction slack is removed, and the posture control wire W6 is not entangled with other members on the left and right.
[0036]
Furthermore, in order to reliably remove the slack of the posture control wire W6, the distance from the attachment shaft 67 to the wire insertion hole 77c is increased by increasing the distance from the attachment shaft 67 to the lower end of the second tensioner arm 77. do it. However, when the seat S is folded at the retracted position, the posture control wire W6 becomes loose, and the first tensioner arm 75 and the second tensioner arm 77 tend to face in the vertical direction due to the weight of the tensioner device 79. For this reason, when the distance from the mounting shaft 67 to the lower end of the second tensioner arm 77 is increased as described above, the vertical distance from the mounting shaft 67 of the seat portion 19 to the bottom surface 3b1 of the storage recess 3b becomes the mounting shaft 67. 14, the lower end of the second tensioner arm 77 is used for storage when the sheet S approaches the storage position from the sheet use position side as shown in FIG. 14. It contacts the bottom surface 3b1 of the recess 3b.
However, when the tensioner device 79 is directed in the vertical direction, the first tensioner arm 75 and the second tensioner arm 77 are rotatable around the mounting shaft 67 and the pin 81, respectively, so that the lower end portion of the second tensioner arm 77 is When contacting the bottom surface 3b1 of the storage recess 3b, the second tensioner arm 77 and the first tensioner arm 75 rotate relative to each other about the mounting shaft 67 and the pin 81 as shown in FIG. When the first tensioner arm 75 and the second tensioner arm 77 rotate relative to each other, the impact force generated between the bottom surface 3b1 of the storage recess 3b and the second tensioner arm 77 is absorbed, so that the bottom surface 3b1 and the second tensioner arm 77 are It will not hurt.
Depending on how the second tensioner arm 77 and the bottom surface 3b1 come into contact, the first tensioner arm 75 and the second tensioner arm 77 may rotate as shown in FIG. 16, but in this case as well, the impact force can be absorbed.
[0037]
Further, since the pin 81 of the tensioner device 79 is laterally offset with respect to the vertical line B passing through the mounting shaft 67, regardless of the contact angle between the lower end of the second tensioner arm 77 and the bottom surface 3b1, The first tensioner arm 75 and the second tensioner arm 77 always rotate relative to each other.
[0038]
When the sheet S returns from the storage position to the sheet use position, the posture control wire W6 is tensioned again, and the posture control wire W6 is in a linear state. Then, due to the tension of the posture wire W6 at this time, the first tensioner arm 75 and the second tensioner arm 77 rotate in the direction opposite to that when contacting the bottom surface 3b1, and the locking piece 75c and the protruding piece 77b come into contact with each other. Thus, the first tensioner arm 75 and the second tensioner arm 77 automatically return to the linear state. Therefore, an urging member for returning the first tensioner arm 75 and the second tensioner arm 77 to the linear state is unnecessary.
[0039]
Furthermore, in this embodiment, since the lock mechanisms 31 and 19 are unlocked by the single lock operation force transmission mechanism 51 when the sheet S is in the sheet use position and the storage position, the structure is simple and the number of parts is reduced. Is decreasing.
Further, since the lock release when the sheet S is in the sheet use position and the storage position is performed by a single release switch, operability is good.
[0040]
【The invention's effect】
According to the present invention, when the seat is in the seat installation surface and the storage recess, the posture control wire does not sag in the left-right direction of the vehicle, so that the posture control wire does not get stuck with other members.
[Brief description of the drawings]
FIG. 1 is a side view of a vehicle to which the present invention is applied.
FIG. 2 is a side view showing a state in which a seat is installed on a floor surface inside a vehicle and a state in which the seat is stored.
FIG. 3 is an enlarged side view of a front leg and a rear leg of a seat.
FIG. 4 is an enlarged side view of the lower end portion of the rear leg when the striker and the latch are not engaged.
FIG. 5 is an enlarged side view of the lower end portion of the rear leg when the striker and the latch are engaged.
FIG. 6 is an enlarged side view of the lower end portion of the front leg when the striker and the latch are not engaged.
FIG. 7 is an enlarged side view of the lower end portion of the front leg when the striker and the latch are engaged.
FIG. 8 is a plan view of a seat portion of the seat.
FIG. 9 is a plan view of a lock operation force transmission mechanism.
FIG. 10 is an enlarged perspective view of both end portions of the attitude control wire.
FIG. 11 is an enlarged side view of a front end portion of a seat, a posture control wire, and a tensioner device.
FIG. 12 is a plan view of a posture control wire and a tensioner device.
FIG. 13 is a side view of a seat in a use posture.
FIG. 14 is a side view of the tensioner device when the seat is in a folded posture in the retracted position.
FIG. 15 is a side view showing a state when the tensioner device contacts the floor surface of the storage recess.
FIG. 16 is a side view showing a state when the tensioner device contacts the floor surface of the storage recess.
[Explanation of symbols]
1 vehicle
3 Floor
3a Seat installation surface
3b Recess for storage
3b1 floor
3b2 front wall
5 7 9 striker
11 Support bracket
13 Rotating shaft
15 Rotating rod
17 Rear legs
17a Notch
19 Bottom
21 frames
22 Spring
23 Latch
23a Engaging groove
23b Arm
23c engagement part
25 Spring
27 Locking member
27a Contact part
29 Front legs
29a Notch
31 Locking mechanism
33 Spring
35 Latch
35a engagement groove
35b arm
35c engagement part
37 Spring
39 Locking member
39a Contact part
41 Link member
43 Gas Spring
43a cylinder
43b Movable rod
45 Engagement member
47 Tension spring
49 Backrest
51 Locking force transmission mechanism
53 Switching lever
53a Rotating shaft
53b long hole
55 Pressing lever
55a Rotating shaft
55b long hole
57 Lock release lever
57a Press surface
59 Spring
63 Spring
65 Connecting pin
67 Mounting shaft (first shaft)
69 Fixing bracket
71 Bracket
73 Fixing bracket
75 First tensioner arm
75a body
75b
75c Locking piece (stopper mechanism)
77 Second tensioner arm
77a body
77b Projection piece (stopper mechanism)
77c Wire insertion hole (wire locking part)
79 Tensioner device
81 pin (second axis)
S sheet
W1 W2 W3 W4 W5 Operation wire
W6 attitude control wire

Claims (7)

A seat use position where the vehicle seat is placed on a seat installation surface provided on the floor surface around a left-right axis of the vehicle, and a storage position where the vehicle seat is stored in a storage recess provided in the floor surface The sheet is loosened when the sheet is positioned at the sheet use position and the storage position, respectively, and is rotating between the sheet use position and the storage position between the sheet and the floor surface. In the retractable vehicle seat device in which a posture control wire that stretches and controls the posture of the seat is stretched,
A tensioner arm that is pivotally attached to the seat so as to be rotatable about an axis in the vehicle left-right direction, and has a wire locking portion that locks an intermediate portion of the attitude control wire;
A tensioner device for a posture control wire in a retractable vehicle seat device, wherein the wire locking portion is offset from a straight line connecting both ends of the posture control wire in plan view. The posture control wire tensioner device in the retractable vehicle seat device according to claim 1, wherein the wire locking portion is a wire insertion hole through which the posture control wire is inserted. Tensioner device. In the tensioner device of the attitude control wire in the retractable vehicle seat device according to claim 1 or 2,
The tensioner arm is
A first tensioner arm pivotally attached to the seat about a first axis in the vehicle left-right direction, and pivotally attached on the first tensioner arm about a second axis parallel to the first axis; A second tensioner arm in which the wire locking portion is perforated,
When the lower end portion of the second tensioner arm comes into contact with the vehicle floor, the first tensioner arm rotates with respect to the seat about the first axis, and the first tensioner arm moves to the second axis. A tensioner device for a posture control wire in a retractable vehicle seat device that rotates with respect to the second tensioner arm around the center. The posture control wire tensioner device in the retractable vehicle seat device according to any one of claims 1 to 3, wherein when the lower end portion of the second tensioner arm comes into contact with the vehicle floor surface, the second tensioner arm is The tensioner device for the attitude control wire in the retractable vehicle seat device, wherein the axis of the second tensioner arm is rotated around a contact point with the vehicle floor and the axis of the second tensioner arm is inclined with respect to the vertical line. In the tension control device of the posture control wire in the retractable vehicle seat device according to any one of claims 2 to 4,
A tensioner device for a posture control wire in a retractable vehicular seat device, wherein the second axis on the first tensioner arm is offset from a vertical line passing through the first axis when both arms are freely suspended. In the tensioner device of the attitude control wire in the retractable vehicle seat device according to any one of claims 2 to 5,
The first tensioner that rotates relative to the second axis to increase the opening angle when the attitude control wire extends between the first tensioner arm and the second tensioner arm. A tensioner device for a posture control wire in a retractable vehicle seat device provided with a stopper mechanism that holds the arm and the second tensioner arm in a linear state as a whole. The posture control wire tensioner device in the retractable vehicle seat device according to any one of claims 1 to 6, wherein one end portion of the posture control wire is rotatable on the seat about an axis in a vehicle left-right direction. A tensioner for a posture control wire in a retractable vehicle seat device that is pivotally attached and that fixes the tensioner arm to one end of the posture control wire so that the tensioner arm is rotatable with respect to the seat. apparatus.

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