JPH0619402Y2 - Vehicle seat - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a vehicle seat in which a seat back is tilted forward to improve the ability to get in and out of a seat rearward.

"Prior Art" Conventionally, a vehicle seat of this type is applied to a front seat of a two-door vehicle, and a rear part of the seat is lifted upward around a front part of the front seat. It is common that the vehicle is tilted forward to enhance the ability to get in and out of the rear seats.

[Problems to be solved by the invention] However, in such a conventional vehicle seat, the headrest main body, which is supported by the seat back of the front seat so as to be adjustable up and down, is lifted up while holding the headrest body in the upper position. If the headrest body hits the windshield or the like, and if it hits hard, the headrest body may be damaged.

It is necessary to check the position of the headrest body so that the headrest body does not hit the windshield, etc., and if the headrest body is in the upper position, bother to return it to the lower position before lifting the front seat. There was a problem that was not good.

The present invention has been made in view of such conventional problems, and when the seat is jumped forward, the headrest main body is lowered from the upper position to the lower position. It is an object of the present invention to provide a vehicle seat that is extremely easy to use and can jump up the seat forward without paying attention.

When the four-bar rotary chain operates, the small link and the large link swing, and the rear part of the seat frame bounces about the front part of the seat frame, and as a result, the seat bounces forward.

[Means for Solving the Problem] The gist of the present invention for achieving such an object is as follows. (1) A seat is supported by a mounting mechanism through a hoisting mechanism for hoisting a seat forward, A vehicle seat for improving the getting on / off property, wherein a headrest main body is supported at an upper end portion of a seat back of the seat via a stay so that the headrest main body can be adjusted to an upper position and a lower position in the vertical direction. The lifting mechanism includes a mounting portion, a seat frame, a small link member that connects the front portion of the mounting portion and the front portion of the seat frame, and a large link that connects the rear portion of the mounting portion and the rear portion of the seat frame. The headrest body can be restrained from moving downward by being engaged with and disengaged from a locking groove formed in the stay so as to hold the headrest body at the upper position. A locking member In addition, the headrest body is urged downward, and when the seat is jumped forward, the headrest body is connected to the lock member so as to move from the upper position to the lower position by the urging force. A vehicle seat comprising a control cable capable of pulling the lock member according to the hoisting operation and detaching the lock member from the locking groove.

(2) A vehicle seat in which a seat is supported by a mounting portion via a hoisting mechanism that hoists forward to improve the ease of getting in and out of the seat rear, and a stay is provided at an upper end of a seat back of the seat. The headrest main body is supported at an upper position and a lower position via the to adjust the vertical position, and the jumping mechanism includes a mounting portion, a seat frame, a front portion of the mounting portion, and a front portion of the seat frame. And a small link member for connecting the rear portion of the installation portion and a rear portion of the seat frame for connecting the four-node rotation chain composed of a large link member, in order to hold the headrest body in the upper position, A lock member that can be engaged with and disengaged from a locking groove formed in the stay to restrain the downward movement of the headrest body, and urges the headrest body downward to raise the seat forward. When you do , The headrest main body is moved from the upper position to the lower position by the biasing force, is coupled to the lock member, pulls the lock member according to the jumping operation, and pulls the lock member from the locking groove. The vehicle seat is characterized by having a control cable that can be detached.

"Operation" When the lock member is pulled by the forward jumping motion of the seat, when the headrest main body is in the upper position and the seat is jumped forward, the control is performed according to the forward jumping motion. The cable pulls the locking member. As a result, the lock member is disengaged from the retaining groove of the stay, the stay can be moved downward, and the headrest body is moved from the upper position to the lower position by the urging force.

Since the headrest body is in the lower position, the headrest body will not hit the windshield etc. even if the seat back is tilted forward.

When the headrest body is in the lower position and the seat is jumped up forward, the control cable pulls the lock member in response to the forward jumping motion, and as described above, the lock member separates from the retaining groove of the stay. Then, the stay can be moved downward, but since the headrest body has returned to the lower position, with the headrest body still in the lower position,
The seat jumps forward.

When the lock member is pulled by the forward jumping operation of the seat, when the headrest main body is in the upper position and the seat back is tilted forward, the control cable is released in response to the forward jumping operation. Pull the lock member. As a result, the lock member is disengaged from the retaining groove of the stay, the stay can be moved downward, and the headrest body is moved from the upper position to the lower position by the urging force.

[Examples] Various examples of the present invention will be described below with reference to the drawings. In addition, the same reference numerals are given to the same type parts in various examples,
A duplicate description will be omitted.

1 to 5 show a first embodiment of the present invention.

As shown in FIGS. 1 to 3, a seat 20 is supported on a vehicle body floor 10 via a pair of rail units 30 so as to be movable back and forth.

A headrest main body 25 is supported on the upper end portion of a seat back 21 of the seat 20 via a pair of stays 26 so that the headrest body 25 can be adjusted in the vertical position.

The rail unit 30 includes a vehicle body-side rail 31 fixedly mounted on the vehicle body floor 10, and a seat-side rail 32 that is an installation portion that is fitted into the vehicle-body-side rail 31 so as to be movable back and forth and supports the seat 20. .

The seat 3 is attached to the seat-side rail 32 via a hoisting mechanism 40.
0 is supported.

The front portion of the seat-side rail 32 and the front portion of the seat frame 22 are connected by the small link member 41, and the seat-side rail 3
2 and the rear part of the seat frame 22 are large link members 4
Connected by two.

The seat frame 22, the seat-side rail 32, and the two link members 41, 42 constitute a four-bar rotary chain capable of jumping up the rear part of the seat frame 22 about the front part of the seat frame 22. There is.

The large link member 42 is rotatably supported by the seat frame 22 by a pivot shaft 43, and the tip end portion 44 of the large link member 42 is bent forward in an L-shape at the pivot support portion. A control cable 50, which is pulled when the rear portion of the seat frame 22 is flipped up, is provided at the tip end portion 44 of the large link member 42.
The lower end of the inner cable 51 of is connected. The outer casing 52 of the control cable 50 is fixed to the seat frame 22.

The control cable 50 is arranged above the back frame 23 of the seatback 21, and the headrest body 25
Is extended to a lock mechanism 60 for restraining the vertical movement.

As shown in FIGS. 3 to 5, a pipe member 24 is fixed to the upper portion of the back frame 23, and a holder member 61 is fitted to the pipe member 24. A pair of support wall portions 62 is formed on the upper portion of the holder member 61, and a lock member 64 is swingably supported by the support wall portion 62 by a pivot 63.

When the base end portion 65 of the lock member 64 is moved up and down and the lock member 64 swings around the pivot 63, the stay 26
A plurality of hooking grooves 27, 27, ... Engraved with a locking hole 66 whose peripheral edge can be engaged and disengaged are formed at the tip of the lock member 64. The stay 26 is biased downward by a spring member 28.

In the direction in which the peripheral edge of the locking hole 66 engages with the hook groove 27, that is, in the upward direction, the base end portion 65 of the lock member 64 is moved toward the spring member 6.
Energized by 7.

The upper end of the inner cable 51 is connected to the base end portion 65 of the lock member 64. Support wall portion 62 of holder member 61
A cover member 68 is fitted to the.

Next, the operation will be described.

In FIG. 2, the peripheral edge of the locking hole 66 of the lock member 64 is engaged with the upper engagement groove 27 of the stay 26, the headrest main body 25 is in the upper position, and both link members 41, 4
2 is folded and the seat 20 is in a normal seated state.

In this state, when both the link members 41 and 42 are jumped up by the jumping mechanism 40, the seat frame 2
The rear part of the seat frame 22 jumps up with the front part of 2 substantially at the center.

When the large link member 42 jumps up, the tip end 44 of the large link member 42 swings counterclockwise in FIG. 1 about the pivot 43, and the inner cable 51 of the control cable 50 is pulled in accordance with the movement. Get burned.

At this time, the inner cable 51 pulls the base end portion 65 of the lock member 64 downward against the biasing force of the spring member 67. As a result, the lock member 64 swings counterclockwise in FIG. 4 about the pivot 63. Lock member 6
The peripheral edge of the locking hole 66 of No. 4 separates from the locking groove 27, and the stay 26 can move downward.

The biasing force of the spring member 28 moves the headrest body 25 from the upper position to the lower position.

That is, when the rear portion of the seat frame 22 is jumped up, the headrest body 25 moves from the upper position to the lower position.
The headrest body 25 does not hit the windshield or the like.

When the periphery of the locking hole 66 of the lock member 64 is engaged with the lower engagement groove 27 of the stay 25 and the headrest body 25 is at the lower position, the rear portion of the seat frame 22 is jumped up, as described above. In addition, the periphery of the locking hole 66 of the lock member 64 is disengaged from the locking groove 27, and the stay 26 can be moved downward. However, since the headrest body 25 is returned to the lower position, the spring member 28 is attached. Even if the headrest main body 25 does not move even if it is pulled downward by the force, the rear portion of the seat frame 22 jumps up while the headrest main body 25 remains in the lower position.

In the first embodiment, the inner cable 51 is pulled in accordance with the movement of the tip portion of the large link member 42 to catch the jumping operation of the seat frame 22.
Not limited to this, for example, by connecting the front end portion of the inner cable 51 to the seat-side rail 32, the outer casing 5
2 may be fixed to the seat frame 52.

6 to 9 show a second embodiment of the present invention.

In the vehicle seat according to the present embodiment, the restraint mechanism 70
This is different from the configuration of the first embodiment in that the headrest body 25 is pulled downward by the restraint release operation.

As shown in FIGS. 6 and 7, the restraint mechanism 70 is attached to the rear end of the seat frame 22, the lever member 72 is swingably supported by the base member 71, and the rail 32 on the seat side. A latch member 73 for engaging and disengaging the striker 35 fixedly attached to the seat frame 22 to restrain the seat frame 22 from being flipped up.
Are swingably supported integrally with the lever member 72.

One end of the inner cable 51 of the control cable 50 is connected to the lever member 72. The control cable 50 extends to the lock mechanism 80 side through the inside of the seat back 21.

As shown in FIGS. 8 and 9, the lock mechanism 80 is
It has a support member 82 fixed to the upper end of the back frame 23. The support member 82 supports a lock member 84 that swings in a substantially horizontal direction and enters the internal space formed by the holder member 81 and the cover member 88 to be engageable with and disengageable from the retaining groove 27 of the stay 26.

A spring member 87 is erected on the base end portion 85 of the lock member 84 and the pin member 83 planted on the support member 82.
The lock member 84 is urged by 7 in the direction in which it engages with the retaining groove 27. The other end of the inner cable 51 is connected to the base end 85 of the lock member 84.

In FIG. 7, the latch member 73 engages with the striker 35, whereby the seat frame 22 is restrained from being flipped up. At this time, the lock member 84 is attached to the stay 2
The stay 26 is engaged with the retaining groove 27 of No. 6 and is in a state of being immovable in the downward direction.

In FIG. 7, when the lever member 72 is swung counterclockwise around the pivot 72a, the latch member 73 swings counterclockwise and is disengaged from the striker 35, and the inner cable 51 is pulled.

When the inner cable 51 is pulled, the lock member 84 is pulled against the urging force of the spring member 87, retracts from the hook groove 27 of the stay 26, and comes out of the hook groove 27.

When the lock member 84 is disengaged from the hook groove 27, the spring member 2
The headrest body 25 is moved from the upper position to the lower position by the urging force of 8.

That is, since the headrest body 25 moves from the upper position to the lower position even when the rear portion of the seat frame 22 is jumped up,
As shown in FIG. 6, the headrest main body 25 does not hit the windshield or the like.

[Advantage of Invention] According to the vehicle seat of the present invention, when the headrest body is in the upper position, the seatback is moved forward or when the seatback is operated forward. In addition, the control cable pulls the lock member, the lock member disengages from the retaining groove of the stay, the stay becomes movable downward, and the headrest body moves from the upper position to the lower position by the urging force. Therefore, the headrest body does not hit the windshield etc. and is not damaged, and the rear portion of the seat can be jumped up without paying particular attention to the position of the headrest body.
It is extremely easy to use.

[Brief description of drawings]

1 to 5 show a first embodiment of the present invention,
FIGS. 1 and 2 are side views of the vehicle seat as a whole, FIG. 3 is a front view of an essential part of the vehicle seat, FIG. 4 is a sectional view of an essential part of the locking mechanism, and FIG. 5 is a perspective view of the same. FIGS. 6 to 9 show a second embodiment of the present invention. FIG. 6 is a side view of a vehicle seat, FIG. 7 is a side view of the same, and FIG. FIG. 9 is a perspective view mainly showing the lock mechanism. 10 ... Body floor 20 ... Seat 25 ... Headrest body 26 ... Stay 27 ... Latch groove 28 ... Spring member 30 ... Rail unit 40 ... Lifting mechanism 50 ... Control cable 60, 80 ... Lock mechanism 61, 81 ... Holder member 64, 84 ... Lock member 70 ... Restraint mechanism 72 ... Lever member

Claims (2)

[Scope of utility model registration request] 1. A vehicle seat in which a seat is supported by a mounting portion via a hoisting mechanism for hoisting forward so as to improve the ability to get in and out of a seat rearward, and the seat back is provided at an upper end portion of the seat back. , In which the headrest main body is supported at an upper position and a lower position via a stay so that the vertical position can be adjusted, the jumping mechanism includes a mounting part, a seat frame, and a front part of the mounting part and a seat frame. In order to hold the headrest body at the upper position, the headrest main body is held at the upper position by a small link member connecting the front part and a large link member connecting the rear part of the installation part and the rear part of the seat frame. A lock member capable of restraining downward movement of the headrest main body by engaging with a locking groove formed in the stay, and urging the headrest main body downward to jump the seat forward. When raising , The headrest main body is moved from the upper position to the lower position by the biasing force, is coupled to the lock member, pulls the lock member according to the jumping operation, and pulls the lock member from the locking groove. A vehicle seat having a control cable that can be detached. 2. A vehicle seat in which a seat is supported by a mounting portion via a hoisting mechanism that hoists forward to improve the ease of getting in and out of a seat rearward, and the seat back is provided at an upper end portion of the seat back. , In which the headrest main body is supported at an upper position and a lower position via a stay so that the vertical position can be adjusted, the jumping mechanism includes a mounting part, a seat frame, and a front part of the mounting part and a seat frame. In order to hold the headrest body at the upper position, the headrest main body is held at the upper position by a small link member connecting the front part and a large link member connecting the rear part of the installation part and the rear part of the seat frame. A lock member capable of restraining downward movement of the headrest main body by engaging with a locking groove formed in the stay, and urging the headrest main body downward to jump the seat forward. Lift up Then, in order to move the headrest body from the upper position to the lower position by the urging force, the headrest body is connected to the lock member, and the lock member is pulled in response to the jumping operation, and the lock member is locked. A vehicle seat comprising a control cable that can be detachably operated from a stop groove.