JP2011084095A - Seat back angle adjusting device for vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat back angle adjusting device for a vehicle seat capable of suppressing gathering of many members in a narrow space. <P>SOLUTION: This seat back angle adjusting device 1 for the vehicle seat adjusts an angle of the seat back 11 in relation to a vehicle body 21. The seat back angle adjusting device 1 includes a support device 2 for rotatably supporting one end part of the seat back 11 in relation to the vehicle body 21, and a releasable position adjusting device 3 for connecting a side part at the other end part of the seat back 11 to be adjustable in position and releasable in relation to the vehicle body 21. The releasable position adjusting device 3 includes a striker base 4 mounted with a striker 5, a striker adjusting mechanism 7 for connecting the striker base 4 to the vehicle body 21 to be adjustable in angle, and a lock mechanism 6 provided in the seat back 11 to be releasably engaged to the striker 5. The striker adjusting mechanism 7, the lock mechanism 6 and the support device 2 are arranged at different positions in a side view. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle seat back angle adjusting device that adjusts the angle of a seat back with respect to a vehicle body.

  A conventional seat back angle adjusting device, as described in Japanese Patent Application Laid-Open No. H10-260, discloses a support device that rotatably supports one end portion of a seat back with respect to a vehicle body, and a side portion of the other end portion of the seat back. And a releasable position adjusting device that is releasably connected with respect to the position. The releasable position adjusting device has a rail provided on the pillar of the vehicle body, a striker provided on the rail so that the position can be adjusted, and a lock mechanism provided on the side portion of the seat back to releasably engage with the striker. . Therefore, the reclining angle of the seat back can be adjusted to a desired angle by adjusting the position of the striker with respect to the rail. Also, the seat back can be tilted forward by releasing the striker from the lock mechanism.

JP 2008-137604 A

  However, the rail and the lock mechanism of the conventional seat back angle adjusting device can overlap in a side view (the width direction of the seat back). Therefore, many members can gather in a narrow space. As a result, the shape of the rail and the lock mechanism is limited so as not to interfere with each other. Then, this invention makes it a subject to provide the seat back angle adjustment apparatus for vehicle seats which can suppress that many members gather in a narrow space.

  In order to solve the above-mentioned problems, the present invention is a vehicle seat back angle adjusting device having a configuration as described in each claim. According to the first aspect of the present invention, the support device that rotatably supports one end portion of the seat back with respect to the vehicle body, the position of the side portion of the other end portion of the seat back can be adjusted with respect to the vehicle body, and A releasable position adjustment device coupled releasably; The releasable position adjusting device includes a striker base to which a striker is attached, a striker adjustment mechanism that connects the striker base to one of both a seat back and a vehicle body so that the angle can be adjusted, and another one of both members. A locking mechanism is provided that releasably engages the striker. The striker adjustment mechanism, the lock mechanism, and the support device are arranged at different positions in a side view.

  Therefore, the striker adjustment mechanism, the lock mechanism, and the support device can be prevented from gathering in a narrow space. Therefore, the degree of freedom of these shapes and the like is increased, and assembly is facilitated. Further, the striker moves in an arc shape when the striker base rotates. Therefore, the striker can move in an arc shape with a small and simple structure as compared with, for example, a structure that includes a rail extending in an arc shape and a striker that is movably provided on the rail.

  According to the second aspect of the present invention, the striker adjusting mechanism is provided in the vehicle main body, and the lock mechanism is provided in the seat back. The striker adjustment mechanism is disposed closer to the support device than the lock mechanism. Therefore, as shown in FIG. 5, the lock mechanism 6 rotates around the support device 2 together with the seat back. The striker 5 rotates along the movement locus 5f around a position closer to the support device 2 than the lock mechanism 6.

  If the striker adjusting mechanism 7 is disposed at a position farther from the support device 2 than the lock mechanism 6 as indicated by the phantom line in FIG. 5, the striker 5 rotates along the movement locus 5g. Therefore, the movement locus 5f of the striker 5 is closer to the movement locus 6f of the lock mechanism 6 than the movement locus 5g. Therefore, according to the present invention, rattling of the seat back that can be caused by the difference between the movement trajectory 5f of the lock mechanism 6 and the striker 5 can be suppressed.

It is a side view of a vehicle seat in a part of vehicle main body and use condition. It is a side view of a vehicle seat in a folded state with a part of a vehicle body. It is an enlarged side view of a striker adjustment mechanism and a lock mechanism. It is rearward sectional drawing of a part of vehicle main body and a part of vehicle seat. It is a figure which shows the movement locus | trajectory of a lock mechanism and a striker.

  An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the vehicle 20 is a vehicle such as an automobile, and includes a vehicle main body 21 and a door 22. The vehicle main body 21 includes a floor surface and a pillar 21a that stands on the floor surface. A front row sheet and a rear row sheet 10 are disposed on the floor surface. The rear row seat 10 includes a seat cushion 12, a seat back 11, and a seat back angle adjusting device 1.

  The seat back angle adjusting device 1 includes a support device 2 and a releasable position adjusting device 3 for adjusting the angle of the seat back 11 with respect to the vehicle body 21 as shown in FIGS. As shown in FIG. 4, the support device 2 has a pin 2a, and the pin 2a connects one end of the frame 11a of the seat back 11 and the rear end of the frame 12a of the seat cushion 12 so as to freely rotate. The seat cushion 12 is attached to the floor surface. Therefore, the seat back 11 is supported rotatably with respect to the vehicle body 21.

  As shown in FIGS. 3 and 4, the releasable position adjusting device 3 connects the side portion of the other end of the seat back 11 to the vehicle body 21 so that the position can be adjusted and releasable. The releasable position adjustment device 3 includes a lock mechanism 6, a striker 5, and a striker adjustment mechanism 7. The lock mechanism 6 includes a lock base 6a that is rotatably attached to the frame 11a of the seat back 11 by a pin 6d, a hook 6b and a pole 6c that are rotatably attached to the lock base 6a, and a hook 6b and a pole 6c. A spring 6e is provided.

  As shown in FIGS. 3 and 4, the lock base 6 a is formed with a recess 6 a 1 into which the striker 5 can be inserted. The hook 6b has a force receiving portion 6b2 and a claw portion 6b1. The hook 6b includes a standby position where the force receiving portion 6b2 extends into the recess 6a1, a locking position where the force receiving portion 6b2 is pushed by the striker 5 and rotates counterclockwise, and the claw portion 6b1 is locked to the striker 5. Rotate between. The spring 6e presses the hook 6b against the pole 6c in both the standby position and the locking position, whereby the spring 6e holds the hook 6b in both these positions.

  One end of the cable 15 is connected to one end of the pole 6c as shown in FIGS. The other end of the cable 15 protrudes from the upper side position of the seat cushion 12. When the other end of the cable 15 is pulled by the user, the pole 6c rotates. As a result, the hook 6b rotates from the locking position to the standby position, and the hook 6b releases the striker 5.

  As shown in FIGS. 3 and 4, the striker adjusting mechanism 7 includes a base 7 a attached in the pillar 21 a and a disc body 7 b that is rotatably attached to the base 7 a. A lock body 7c is provided between the base 7a and the disk body 7b. The lock body 7c is urged by the spring 7e to lock the base 7a and the disk body 7b in a non-rotatable manner. A release arm 7d is connected to the lock body 7c, and one end of the cable 14 is connected to the release arm 7d.

  The other end of the cable 14 is connected to a release lever 13 provided in the pillar 21a as shown in FIG. Therefore, by operating the release lever 13, the lock body 7c is unlocked via the cable 14 and the release arm 7d, and the disk body 7b can rotate with respect to the base 7a. When the operation of the release lever 13 is released, the lock body 7c locks the disk body 7b with respect to the base 7a so as not to rotate by using the biasing force of the spring 7e.

  A plate-like striker base 4 is attached to the disc body 7b as shown in FIGS. The striker base 4 has a base end portion 4a fixed to the disk body 7b and an extending portion 4b extending upward from the base end portion 4a. A striker 5 is attached to the end of the extension 4b. The striker 5 integrally includes first and second standing portions 5a and 5b that stand on the striker base 4, and a connecting portion 5c that connects ends of the standing portions 5a and 5b.

  As shown in FIGS. 3 and 4, the upright portions 5 a and 5 b project from the pillar 21 a through the opening 21 b into the vehicle compartment. The opening 21b has an arc shape and allows the striker 5 to move in an arc shape. The standing portions 5a and 5b are arranged side by side so that the movement trajectories are substantially the same. The upright portion 5 a positioned in front of the upright portion 5 b can be engaged with the lock mechanism 6.

  As shown in FIG. 1, when the angle of the seat back 11 is adjusted, the release lever 13 is operated. As a result, the striker adjusting mechanism 7 permits the striker base 4 to rotate, and the striker 5 allows the rotation about the rotation shaft 7f. When the seat back 11 is rotated in this state, the lock mechanism 6 rotates around the support device 2 together with the seat back 11, and the striker 5 engaged with the lock mechanism 6 is centered on the rotation shaft 7 f of the striker adjustment mechanism 7. Rotate to.

  After setting the seat back 11 to a desired rearward tilt angle, the release lever 13 is returned to the original position. Thereby, the striker adjustment mechanism 7 makes the striker base 4 unrotatable. Thus, the seat back 11 is held unrotatable at a desired rearward tilt angle with respect to the vehicle body 21.

  As shown in FIG. 2, when the sheet 10 is changed from the use state to the folded state, the cable 15 is pulled. As a result, the lock mechanism 6 releases the striker 5. Thus, the seat back 11 can rotate around the support device 2, and the seat back 11 falls forward and overlaps the seat cushion 12 (folded state). When the seat back 11 is raised, the hook 6b of the lock mechanism 6 is pushed and rotated by the striker 5, and the hook 6b is engaged with the striker 5 (use state). As a result, the seat back 11 can return to a predetermined rearward tilt angle immediately before falling forward.

  As described above, the seat back angle adjusting device 1 includes the support device 2 and the releasable position adjusting device 3 as shown in FIG. The releasable position adjusting device 3 includes a striker adjusting mechanism 7 and a lock mechanism 6. The striker adjustment mechanism 7, the lock mechanism 6, and the support device 2 are arranged at different positions in a side view (in the width direction of the seat back 11).

  Therefore, the striker adjusting mechanism 7, the lock mechanism 6, and the support device 2 can be prevented from gathering in a narrow space. Therefore, the degree of freedom of these shapes and the like is increased, and assembly is facilitated. Further, the striker 5 moves in an arc shape when the striker base 4 rotates. Therefore, for example, the striker 5 can move in an arc shape with a small and simple structure as compared to a structure including a rail extending in an arc shape and a striker provided movably on the rail.

  As shown in FIGS. 1 and 4, the striker adjusting mechanism 7 is provided in the vehicle main body 21, and the lock mechanism 6 is provided in the seat back 11. The striker adjustment mechanism 7 is disposed closer to the support device 2 than the lock mechanism 6. Therefore, as shown in FIGS. 1 and 5, the lock mechanism 6 rotates around the support device 2 together with the seat back 11. The striker 5 rotates along the movement locus 5f around a position closer to the support device 2 than the lock mechanism 6.

  If the striker adjusting mechanism 7 is disposed at a position farther from the support device 2 than the lock mechanism 6 as indicated by the phantom line in FIG. 5, the striker 5 rotates along the movement locus 5g. Therefore, the movement locus 5f of the striker 5 is closer to the movement locus 6f of the lock mechanism 6 than the movement locus 5g. Therefore, according to this configuration, rattling of the seat back that may be caused by the difference between the movement trajectory 5f of the lock mechanism 6 and the striker 5 can be suppressed.

  As shown in FIGS. 1 and 3, when adjusting the angle of the seat back 11, the lock mechanism 6 rotates around the support device 2 together with the seat back 11. The striker 5 rotates around the rotation shaft 7 f of the striker adjustment mechanism 7. Therefore, the lock mechanism 6 and the striker 5 can be separated due to the difference in their rotation trajectories. On the other hand, the lock mechanism 6 can rotate around the pin 6d. Therefore, the lock mechanism 6 and the striker 5 are prevented from separating by the rotation of the lock mechanism 6, and the backlash of the seat back 11 with respect to the vehicle body 21 that can be caused by the separation can be suppressed.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and may be the following form.
(1) The seat back 11 shown in FIG. 4 is rotatably attached to the vehicle body 21 via the seat cushion 12. However, the seat back may be directly attached to the vehicle body so as to be rotatable without using a seat cushion.
(2) In the releasable position adjusting device 3 shown in FIG. 4, the striker adjusting mechanism 7 is attached to the vehicle body 21, and the lock mechanism 6 is attached to the seat back 11. However, the striker adjusting mechanism may be attached to the seat back, and the lock mechanism may be attached to the vehicle body.
(3) In the releasable position adjusting device 3 shown in FIG. However, the striker adjusting mechanism may be provided at a position farther from the support device than the lock mechanism.

DESCRIPTION OF SYMBOLS 1 ... Seat back angle adjustment apparatus 2 ... Support apparatus 3 ... Releasable position adjustment apparatus 4 ... Striker base 5 ... Striker 6 ... Lock mechanism 7 ... Striker adjustment mechanism 10 ... Seat 11 ... Seat back 12 ... Seat cushion 20 ... Vehicle 21 ... Vehicle body 22 ... door

Claims (2)

A seat back angle adjusting device for a vehicle seat that adjusts the angle of the seat back with respect to the vehicle body,
A support device that rotatably supports one end portion of the seat back with respect to the vehicle main body, and a release that connects the side portion of the other end portion of the seat back to the vehicle main body in a position-adjustable and releasable manner. A possible position adjustment device,
The releasable position adjusting device includes a striker base to which a striker is attached, a striker adjustment mechanism that connects the striker base to one of both members of the seat back and the vehicle body so as to be adjustable in angle. A locking mechanism provided on the other and releasably engaged with the striker;
The striker adjusting mechanism, the lock mechanism, and the support device are arranged at different positions in a side view, and the vehicle seat back angle adjusting device is characterized. The vehicle seat back angle adjusting device according to claim 1,
The striker adjustment mechanism is provided in the vehicle body;
The locking mechanism is provided on the seat back;
The vehicle seat back angle adjustment device, wherein the striker adjustment mechanism is disposed closer to the support device than the lock mechanism.

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