JP2011131675A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a reclining operation lever from being operated during an operation of a walk-in operation means. <P>SOLUTION: This seat for a vehicle includes the reclining operation lever 11 for releasing the lock of a reclining device 3 for rotating a seat back 2 in a vehicle longitudinal direction, and the walk-in operation means B for operating a walk-in device for switching the seat back 2 to a forward tilting attitude and making the whole of the seat movable to a vehicle front side along a rail. A return spring 12 for returning the reclining operation lever 11 to its original state is attached to the reclining operation lever 11. The reclining operation lever 11 is constituted to be inoperative during the operation of the walk-in operation means B. When the walk-in operation means B is operated, the reclining operation lever 11 is prevented from being operated (in other words, the walk-in operation means B is independently operated). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicular seat, and more particularly to a vehicular seat including a walk-in device that switches a seat back to a forward leaning posture and allows the entire seat to move forward along the rail.

  2. Description of the Related Art Conventionally, in a vehicle seat, in order to widen a boarding space on the rear side, a seat back is switched to a forward leaning posture, and a walk-in device that can slide the entire vehicle forward is known. ing. By the way, in a conventional vehicle seat, when a walk-in operation knob that constitutes a part of the walk-in operation means for operating the walk-in device is operated, a reclining operation lever that switches the seat back to a forward leaning posture is simultaneously operated. It has become so. That is, the walk-in operation means and the reclining operation means (that is, the reclining operation lever) are integrated (both are fixed by welding) (that is, when one of the operation means is operated, the other operation means is also It is configured to move).

  For example, as a conventionally known technique, when the walk-in operation knob constituting the walk-in operation means is operated, the slider lock of the slider device that supports the seat cushion so as to be slidable in the vehicle front-rear direction with respect to the floor is locked. Is also known (see Patent Document 1 below). In this case, the walk-in operation means and the reclining operation means (that is, the reclining operation lever) are configured to work together.

JP 2009-214573 A

  When the walk-in operation means and the reclining operation lever are interlocked as in the technique disclosed in Patent Document 1, the reclining operation lever is provided with the reclining operation lever after the operation of the reclining operation lever. Since it is customary to have a return spring for returning to the state of, it is necessary to have a force against the return spring as an operation force for operating the walk-in operation knob constituting the walk-in operation means, The malfunction that operation force becomes heavy arises.

  The present invention has been made in view of the above points, and an object thereof is to prevent a reclining operation lever from operating when a walk-in operation mechanism is operated.

  In the present invention, as a first means for solving the above-mentioned problems, the reclining operation lever for releasing the lock of the reclining device for rotating the seat back in the vehicle front-rear direction and the seat back are switched to the forward inclined posture and the entire seat is A return spring for returning the reclining operation lever to its original state in the vehicle seat, comprising a walk-in operation means for operating a walk-in device that can move forward along the rail. And the reclining operation lever is inactivated when the walk-in operation means is operated.

  With the above configuration, when the walk-in operation means is operated, the reclining operation lever does not operate (in other words, the walk-in operation means is operated independently) and is attached to the reclining operation lever. No force is required against the return spring. As a result, the operation force of the walk-in operation means for operating the walk-in device is reduced.

  In the present invention, as a second means for solving the above problems, in the vehicle seat provided with the first means, the walk-in operation means is unlocked by the lock means for locking the reclining device. And a walk-in operation knob that moves the bracket in the unlocking direction of the unlocking shaft, and the reclining operation lever is rotated with respect to the unlocking shaft. While being pivotally supported, it is possible to attach locking means that protrudes toward the rotation center side of the reclining operation lever and engages the cable bracket only when the reclining operation lever is operated. In such a configuration, when operating the reclining operation lever, the bracket that constitutes a part of the walk-in operation means is also operated in the unlocking direction of the reclining device by the unlocking shaft, but constitutes the walk-in operation means. When the walk-in operation knob is operated, the reclining operation lever is inactivated, and only the bracket and the unlocking shaft are operated in the unlocking direction by the unlocking shaft. That is, the walk-in operation means is operated in a state independent of the reclining operation lever, and the operation force of the walk-in operation knob constituting the walk-in operation means is reduced.

  In the present invention, as a third means for solving the above problem, in the vehicle seat including the second means, the walk-in operation knob and the bracket are connected via a walk-in operation cable. Can be linked. In such a configuration, the walk-in operation knob can be disposed at a position away from the bracket (for example, an upper portion of the seat cushion), and usability is improved.

  In the present invention, as a fourth means for solving the above-mentioned problems, in the vehicle seat provided with the second or third means, the locking means is arranged on the rotation center side of the reclining operation lever. It can be constituted by a cut-and-raised piece projecting from the end and engaging only with the bracket when the reclining operation lever is operated. In such a configuration, the walk-in operation means and the reclining operation lever can be walked in during the operation of the walk-in operation means by a simple means of projecting a cut-and-raised piece at the rotation center side end of the reclining operation lever. The operation means can be configured to be operated independently.

  In the present invention, as a fifth means for solving the above-mentioned problems, in the vehicle seat provided with the second, third or fourth means, the reclining operation lever is set when the reclining operation lever is returned. A stopper for maintaining the original state can be attached. In such a configuration, the reclining operation lever can be returned to a certain position.

  According to the first means of the present invention, the reclining operation lever for releasing the lock of the reclining device for rotating the seat back in the vehicle front-rear direction and the seat back are switched to the forward inclined posture and the entire seat is moved forward along the rail along the rail. In a vehicle seat provided with a walk-in operation means for operating a walk-in device that can move to the side, a return spring that returns the reclining operation lever to its original state is attached to the reclining operation lever, and When the walk-in operation means is operated, the reclining operation lever is configured to be inoperative. When the walk-in operation means is operated, the reclining operation lever does not operate (in other words, the walk-in operation means is independent of Operation) There is no need for a force against the return spring attached to the lining operation lever, and the operation force of the walk-in operation means for operating the walk-in device (for example, the walk-in operation knob actually operated by the user) is reduced. is there. In addition, since the reclining operation lever does not operate during the operation of the walk-in operation means, the reclining operation lever and the seat back in the forward leaning posture do not interfere with each other, and safety and merchantability are improved. There is also an effect that both can be achieved.

  As in the second means of the present invention, in the vehicle seat provided with the first means, the walk-in operation means is attached to an unlocking shaft for unlocking the locking means for locking the reclining device. And a walk-in operation knob that moves the bracket in the unlocking direction by the unlocking shaft, and protrudes on the rotation center side of the reclining operation lever, and the reclining operation lever on the cable bracket. In this configuration, when the reclining operation lever is operated, the bracket that constitutes a part of the walk-in operation means is also reclining by the unlocking shaft. It can be operated in the unlocking direction of the device When the walk-in operation knob constituting the walk-in operation means is operated, the reclining operation lever is inoperative, so that only the bracket and the unlocking shaft are operated in the unlocking direction by the unlocking shaft. The operation means is operated in a state independent of the reclining operation lever, and the operation force of the walk-in operation knob constituting the walk-in operation means is reduced.

  As in the third means of the present invention, in the vehicle seat provided with the second means, the walk-in operation knob and the bracket can be connected via a walk-in operation cable. In this configuration, the walk-in operation knob can be disposed at a position away from the bracket (for example, at the top of the seat cushion), and the usability is improved.

  As in the fourth means of the present invention, in the vehicle seat provided with the second or third means, the locking means protrudes from the rotation center side end of the reclining operation lever, and The bracket can be constituted by a cut-and-raised piece that engages only when the reclining operation lever is operated, and in such a case, the cut-and-raised piece protrudes from the rotation center side end of the reclining operation lever. With this simple means, the walk-in operation means and the reclining operation lever can be configured such that the walk-in operation means can be operated independently when the walk-in operation means is operated.

  As in the fifth means of the present invention, in the vehicle seat provided with the second, third or fourth means, the reclining operation lever is maintained in the original state when the reclining operation lever is returned. A stopper can be attached, and in such a configuration, the reclining operation lever can be returned to a certain position.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the whole structure of the vehicle seat concerning embodiment of this invention. It is a principal part block diagram which shows the structure of the normal state of the connection part of the seat back and seat cushion in the vehicle seat concerning embodiment of this invention. It is a disassembled perspective view which shows the principal part of the connection part of the seat back and seat cushion in the vehicle seat concerning embodiment of this invention. It is a principal part block diagram which shows the state which acted the walk-in operation means in the vehicle seat concerning embodiment of this invention. It is a principal part block diagram which shows the state which acted the reclining operation lever in the vehicle seat concerning embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  First, an overall configuration of a vehicle seat according to an embodiment of the present invention will be described with reference to FIG.

  The seat back 2 that supports the back of the seated person with respect to the seat cushion 1 that supports the buttocks of the seated person can be tilted forward and backward by the reclining device 3. The floor F is provided with a seat track 6 including a lower rail 4 fixed to the floor F and an upper rail 5 movably engaged with the lower rail 4. The seat cushion 1 is attached to the upper rail 5 of the seat track 6, and a walk-in device (not shown) switches the seat back 2 to a forward leaning posture and moves the seat cushion 1 in the vehicle longitudinal direction with respect to the floor F. The slide lock state of the seat track 6 that is slidably supported is to be released.

  The reclining device 3 has a connection structure that supports the seat back 2 so as to be rotatable in the front-rear direction with respect to the seat cushion 1, and is always held in a rotationally locked state in which this rotational movement is locked. The reclining device 3 is kept in a rotating state when the cable bracket 9 described later is rotated downward (that is, when the reclining operation lever 11 for operating the reclining device 3 is swung upward or walked). It is released by a turning operation by a pulling force of the walk-in operation cable 10 constituting the in-operation means B.

  Here, the seat back 2 is normally urged in the forward rotation direction by the spring force of an urging spring (not shown) hooked between the seat back 2 and the seat cushion 1. Therefore, the seat back 2 is rotated in the forward tilting direction by urging by releasing the rotation-retaining state of the reclining device 3. Further, when the walk-in operation means B is operated, the reclining device 3 is released from the rotation-retained state and the seat cushion 1 is slidably supported with respect to the floor F in the vehicle front-rear direction. The slide lock state is also released. As a result, the entire seat can be slid to the front side of the vehicle in a posture state in which the seat back 2 is switched to the forward leaning posture, and a wide boarding / alighting space can be secured on the rear side.

  In FIG. 1, reference numeral 17 denotes a walk-in operation knob that is attached to the terminal of the walk-in operation cable 10, and is provided on the shoulder portion of the seat back 2 in the present embodiment. Reference numeral 19 denotes a lock release lever for releasing the slide lock.

  Next, the walk-in operation means B and the reclining operation means A will be described in detail with reference to FIGS.

  The walk-in operation means B includes a bracket (hereinafter referred to as a cable bracket) 9 fixed to an unlock shaft 8 for unlocking a lock means (not shown) for locking the reclining device 3, and one end on the cable bracket 9. Are connected to the walk-in operation cable 10 and a walk-in operation knob 17 (see FIG. 1) attached to the terminal of the walk-in operation cable 10.

  On the other hand, the reclining operation means A is composed of a reclining operation lever 11 pivotally supported with respect to the unlocking shaft 8 and a return spring 12 for returning the reclining operation lever 11 to its original state. ing. That is, the reclining operation lever 11 does not operate when only the unlocking shaft 8 is rotated (that is, when only the cable bracket 9 is operated) (see FIG. 3).

  Moreover, the walk-in operation cable 10 is formed of a an inner cable 10b is inserted into the outer cable 10a and within the outer cable 10a, the inner end of the outer cable 10a is in the middle of the walk-in operation cable 10 It is supported by a cable support member 15, and only the inner cable 10 b is disposed between the cable support member 15 and the cable bracket 9. The end of the inner cable 10b is supported so as to be slidable with respect to a locking projection 9a projecting from the cable bracket 9. When the walk-in operation knob 17 is operated, the end of the inner cable 10b is The engaging part 18 provided in the part engages with the engaging protrusion 9a of the cable bracket 9 so that the cable bracket 9 can be rotated.

  The walk-in operation means B and the reclining operation lever 11 are configured to deactivate the reclining operation lever 11 when the walk-in operation means B (for example, the walk-in operation knob 17) is operated. Yes. That is, the walk-in operation means B and the reclining operation lever 11 are connected via the linkage means C that deactivates the reclining operation lever 11 when the walk-in operation means B (for example, the walk-in operation knob 17) is operated. Are linked together. The linking means C protrudes from the rotation center side of the reclining operation lever 11 and is engaged with the cable bracket 9 only when the reclining operation lever 11 is operated (specifically, the reclining operation lever 11). The lever 11 is constituted by a cut-and-raised piece 13) projecting from the end of the rotation center side of the lever 11.

  Further, a stopper 14 is provided for maintaining the reclining operation lever 11 in the original state when the reclining operation lever 11 is returned. The stopper 14, the are a circular arc shape so as to surround the center of rotation of the reclining lever 11, by the biasing force of the rotation center side end portion 11a is the return spring 12 of the reclining lever 11 at one end 14a equivalents By contacting, the reclining lever 11 can be returned to a certain position.

With the above configuration, when the reclining operation lever 11 for unlocking the reclining device 3 is operated, the cable bracket 9 constituting the walk-in operation means B is also driven by the unlock shaft 8 as shown in FIG. The reclining device 3 is operated in the unlocking direction, but when the walk-in operation cable 10 (specifically, the walk-in operation knob 17) constituting the walk-in operation means B is operated, as shown in FIG. The operation lever 11 is deactivated, and only the cable bracket 9 is operated in the unlocking direction of the reclining device A by the unlocking shaft 8, and the walk-in operation means B is independent from the reclining operation lever 11. It will be operated. Accordingly, a force against the return spring 12 attached to the reclining operation lever 11 is not required, and the operation force of the walk-in operation knob 17 constituting the walk-in operation means B is reduced. Further, since the reclining operation lever 11 does not operate when the walk-in operation knob 17 constituting the walk-in operation means B is operated, the reclining operation lever 11 and the seat back 2 in the forward tilted position interfere with each other. In the above embodiment, the walk-in operation knob 17 is arranged on the shoulder portion of the seat back 2, but the walk is not possible to meet. The in-operation knob 17 may be disposed at the rear portion of the seat cushion 1, and in this case, the walk-in operation cable 17 may be omitted and the walk-in operation knob 17 and the cable bracket 9 may be directly connected. Good.

  The invention of the present application is not limited to the above-described embodiment, and it is needless to say that the design can be appropriately changed without departing from the gist of the invention.

1 is a seat cushion 2 is a seat back 3 is a reclining device 6 is a seat track 8 is a lock release shaft 9 is a bracket (cable bracket)
10 is a walk-in operation cable 11 is a reclining operation lever 12 is a return spring 13 is cut and raised 14 is a stopper 17 is a walk-in operation knob A is a reclining operation means B is a walk-in operation means

Claims (5)

  The reclining operation lever that unlocks the reclining device that rotates the seat back in the longitudinal direction of the vehicle and the walk-in device that switches the seat back to the forward leaning posture and allows the entire seat to move forward along the rail The reclining operation lever is provided with a return spring for returning the reclining operation lever to its original state, and when operating the walk-in operation means, A vehicle seat characterized in that the reclining operation lever is inactivated.   The walk-in operation means includes a bracket attached to an unlock shaft that unlocks a lock means that locks the reclining device, and a walk-in operation knob that moves the bracket in the unlocking direction of the unlock shaft. The reclining operation lever is pivotally supported with respect to the unlocking shaft while being configured to project on the rotation center side of the reclining operation lever and only when the reclining operation lever is operated. The vehicle seat according to claim 1, further comprising a locking means for engaging with the vehicle seat. The vehicle seat according to claim 2, wherein the walk-in operation knob and the bracket are connected via a walk-in operation cable.   The locking means is constituted by a cut-and-raised piece that protrudes from an end of the reclining operation lever on the rotation center side and engages only with the bracket when the reclining operation lever is operated. Item 4. The vehicle seat according to any one of Items 2 and 3.   The vehicle seat according to any one of claims 2, 3, and 4, further comprising a stopper for maintaining the reclining operation lever in an original state when the reclining operation lever is returned.

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