JP2004237922A - Walk-in canceling device of seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operability. <P>SOLUTION: In this seat, a seat slide mechanism 6, a seat slide lock mechanism 16 and a walk-in mechanism 33 for enabling a seat slide due to release of a seat slide lock when a seat back 3 is inclined forward are provided, and the seat back 3 can be inclined forward after springing up a seat cushion 2 to the front. In the seat, a seat locking mechanism 13 for locking the seat cushion 2 on the seat slide mechanism 6 at a sitting position is provided, and a canceling mechanism 43 for canceling the release of the seat slide lock by interlocking with a locking and releasing operation of the seat locking mechanism 13 is provided. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a seat walk-in canceling device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, in an automobile, a seat slide mechanism, a seat slide lock mechanism, and a walk-in mechanism that allows a seat slide to be released when a seat back is tilted forward and a seat slide lock is released. There is. With this walk-in mechanism, the seat is slid forward, so that the passenger in the rear seat can easily get on and off.
[0003]
Further, there has been proposed a device in which the entire seat in the forwardly inclined state of the seat back is flipped up to stand upright (for example, see Patent Document 1).
[0004]
In this flip-up type seat, since the seat slide lock is released when the seat back is tilted forward, the seat becomes slidable, so that there is a problem that it is difficult to perform the flip-up operation of the entire seat. The seat slide mechanism can be re-locked by operating the walk-in cancel operation lever while the seat back is tilted forward.However, the seat back forward operation and the walk-in cancel operation There is an annoyance that the operation of the lever must be separated.
[0005]
[Patent Document 1]
Japanese Utility Model Registration No. 2524571
[Problems to be solved by the invention]
By the way, it has been proposed that the seat back is tilted forward after the seat cushion is flipped forward, so that the seat back can be used as a table or the luggage compartment can be spread flat.
[0007]
When the technology of Patent Document 1 is used for such a type of seat, three operations of a flip-up operation of a seat cushion, a forward operation of a seat back, and a walk-in cancel operation must be performed separately. There is such an annoyance.
[0008]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and has as its object to provide a seat walk-in cancel apparatus with improved operability.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a seat slide mechanism, a seat slide lock mechanism, and a walk-in mechanism in which when a seat back is tilted forward, a seat slide lock is released and a seat slide is possible. Is provided, and the seat back can be moved forward after the seat cushion is flipped forward,
A seat locking mechanism for locking the seat cushion to the seat slide mechanism at a seating position is provided, and a cancel mechanism for canceling release of the seat slide lock in conjunction with an unlocking operation of the seat locking mechanism is provided. The present invention provides a seat walk-in canceling device characterized in that:
[0010]
As described in claim 2, the seat locking mechanism includes a striker provided on one of the seat slide mechanism and the seat cushion, and a fork member and a claw member provided on the other. At the seating position, the fork member engages the striker, the claw member locks the fork member at the engagement position, and the claw member is moved to the non-engagement position by operation of the manual operation member connected to the claw member. When the fork member releases the engagement of the striker, the claw member is held at the disengagement position at the same time, so that the seat cushion can be flipped forward and the claw member can be moved to the disengagement position. It is preferable that the cancel mechanism cancels the release of the seat slide lock in cooperation with the cancel mechanism.
[0011]
When the striker is provided on the seat slide mechanism, the fork member and the claw member are provided on the seat cushion. When the striker is provided on the seat cushion, the fork member and the claw member are provided on the seat slide mechanism. It will be provided in.
[0012]
According to a third aspect of the present invention, the walk-in mechanism includes a forward tilt detecting member for detecting the forward tilt of the seat back, and a lock plate releasing member capable of unlocking a lock plate of the seat slide lock mechanism. The cancel mechanism is provided with a cancel member that locks or unlocks the front tilt detection member, and the cancel member moves the front tilt detection member in conjunction with the movement of the engagement position of the claw member. Locking, the lock plate releasing member is unlocked in conjunction with the front tilt detection member, and the locking of the front tilt detection member is released in conjunction with the movement of the non-engagement position of the claw member, It is preferable that the lock plate release member is configured not to be unlocked by the swinging of the front tilt detection member.
[0013]
Function and Effect of the Invention
According to the present invention, the release (walk-in) of the seat slide lock can be canceled by the cancel mechanism interlocked with the unlocking operation of the seat locking mechanism of the seat cushion. It is possible to use the seat back as a table or spread the luggage space flat simply by flipping up the seat cushion and moving the seat back forward without having to cancel the operation separately. Will be improved.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
As shown in FIG. 8A, an automobile seat 1 includes a seat cushion 2, a seat back 3 supported to be tiltable back and forth with respect to the seat cushion 2, and a detachable support from the seat back 3. And a headrest 4 provided.
[0016]
Then, at the time of walk-in, as shown in FIG. 8B, the seat back 3 can be tilted forward at a predetermined angle. Further, in the table (loading) mode, after the seat cushion 2 is flipped substantially vertically forward as shown in FIG. 9A, the seat back 3 from which the headrest 4 is removed as shown in FIG. 9B. Can be moved forward almost horizontally.
[0017]
As shown in detail in FIG. 2, the seat slide mechanism 6 includes left and right lower channels 8 fixed to the floor 7 (see FIG. 8) of the automobile, and a seat locking mechanism 13 described below that connects a lower portion of the seat cushion 2 to the seat. The upper channel 9 is constituted by right and left upper channels 9 locked and fixed by the seat fixing mechanism 14. The upper channel 9 is fitted to and supported by the lower channel 8 so as to be able to slide back and forth.
[0018]
Above the left and right upper channels 9, side frames 10 rising upward are fixed, respectively, and the rear part of each of the side frames 10 and the left and right lower brackets 11 of the seat back 3 are connected by connecting shafts 12. Thus, the seat back 3 is supported on the seat cushion 2 such that the seat back 3 can be tilted back and forth.
[0019]
A reclining mechanism (not shown) is provided for the seat cushion 2 and the seat back 3 so that the seat back 3 can be locked at a predetermined forward / backward tilt position, and the seat back 3 is moved forward by operating the reclining mechanism. be able to.
[0020]
The seat slide lock mechanism 16 is provided with a lock plate 18 supported on the left and right upper channels 9 by a support shaft 17 so as to be vertically swingable. A lock hole 18b is formed in the rear end 18a of the lock plate 18, and a downward lock projection 8a is formed in the lower channel 8 so that the lock hole 18b of the lock plate 18 can be engaged. The lock plate 18 is urged by a spring 19 in the upward swing direction in which the lock hole 18b is engaged with the lock projection 8a.
[0021]
The rods 20a fixed to the front ends of the lock plates 18 of the left and right upper channels 9 are connected by a seat lock release operation arm 20 so as to interlock with each other.
[0022]
When the seat slide is locked, the lock hole 18b of the lock plate 18 urged in the upward swing direction by the spring 19 engages with the lock protrusion 8a, and the upper channel 9 (the seat cushion 2) is engaged with the lower channel 8. ) Is locked to prevent sliding. When the seat lock release operation arm 20 is lifted and operated from this state, the lock plate 18 is pivoted downward, the lock hole 18b comes off the lock projection 8a, and the upper channel 9 (seat cushion 2) with respect to the lower channel 8. Will be able to slide.
[0023]
In the seat fixing mechanism 14, the hinge brackets 9a at the upper front ends of the left and right upper channels 9 and the hinge brackets 2a at the lower front ends of the seat cushions 2 are connected by hinge pins 22, respectively, so that the seat cushion 2 can jump forward. (See FIG. 9).
[0024]
In the seat locking mechanism 13, an inverted U-shaped striker 23 is fixed to an upper middle portion of one upper channel 9, and a catch 24 is provided at an intermediate side portion of the seat cushion 2 corresponding to the striker 23. I have.
[0025]
As shown in FIGS. 4 and 7A, the catch 24 is provided with a bracket 25 fixed to the seat cushion 2, and the bracket 25 is provided with the seat cushion 2 on the upper channel 9. When returned to the position, a groove 25a into which the striker 23 fits is formed, and a fork member 27 is swingably supported on one side (right side in FIG. 4) of the groove 25a by a support shaft 26. On the other side (the left side in FIG. 4), a claw member 29 is swingably supported by a support shaft 28.
[0026]
A spring 31 is hung between the claw member 29 and the fork member 27, and the claw member 29 is relatively urged in the rightward swinging direction, and the fork member 27 is relatively biased in the leftward swinging direction.
[0027]
Then, the fork member 27 engages with the striker 23 at the seating position of the seat cushion 2 and the claw member 29 locks the fork member 27 at the engaging position (the state shown in FIG. 4). Will be locked.
[0028]
Further, when the claw member 29 pivots leftward to the disengaged position by the lifting operation of the hand operation member 30 connected to the claw member 29 (the state shown in FIG. 6), the fork member 27 is biased by the spring 31. When the engagement of the striker 23 is released by swinging to the left, the seat cushion 2 can be flipped forward around the hinge pin 22 of the seat fixing mechanism 14.
[0029]
When the disengaged fork member 27 pivots leftward, the claw member 29 is held at the non-engaged position by the projection 27a of the fork member 27 (the state of FIG. 6).
[0030]
The walk-in mechanism 33 is provided with a first front tilt detection lever 35 pivotally attached to the rear portion of each of the side frames 10 of the left and right upper channels 9 by the connection shaft 12 so as to swing back and forth. When the pin 3 of the bracket 11 abuts when the 3 is tilted forward, the bracket 3 is swung left.
[0031]
As shown in FIGS. 4 and 7B, the side frames 10 of the left and right upper channels 9 corresponding to above the rods 20a of the seat lock release operation arm 20 are fixed to the side frames 10. A support shaft 37 is provided. A second front tilt detection lever 39 and a rear portion of a lock plate releasing member 38 are fitted on the support shaft 37 in two forward and backward steps and supported so as to be swingable with each other. A spring washer 40 fitted on the support shaft 37 is provided. (See FIG. 1).
[0032]
The first front tilt detection lever 35 and the second front tilt detection lever 39 are connected by a walk-in cable 41, and the first front tilt detection lever 35 and the second front tilt detection lever 39 swing in synchronization. Become like
[0033]
A spring 42 is provided between the second front tilt detection lever 39 and the lock plate release member 38 to urge the second front tilt detection lever 39 with a slight force in the clockwise rotation direction.
[0034]
A cancel spring member 44 of a cancel mechanism 43 is fixed to a front portion of the lock plate release member 38. The cancel spring member 44 includes a base portion 44b having a pair of insertion pieces 44a at a lower portion, an elastic portion 44c extending backward from the upper portion of the base portion 44b in an arc shape, and a rearward portion from a lower end of the elastic portion 44c. The bent locking portion 44d and the elastic portion 44c are also formed by a wire locking portion 44e protruding forward from the lower end.
[0035]
The pair of insertion pieces 44a of the cancel spring member 44 are inserted into respective vertical insertion holes 38a formed in the lock plate release member 38 and bent (see FIG. 7B), so that the cancel spring member 44 is locked. It becomes fixed to the plate releasing member 38.
[0036]
The locking portion 44d of the cancel spring member 44 extends toward the lock plate releasing member 38, and the extending portion 44f is inserted into a lateral guide groove 38b formed in the lock plate releasing member 38. As a result, the guide groove 38b is guided and stopped at the front and rear ends of the guide groove 38b.
[0037]
The wire locking portion 44 e of the cancel spring member 44 and the claw member 29 of the catch 24 are connected by a cable 45.
[0038]
The locking portion 44d of the cancel spring member 44 locks the second forward tilt detection lever 39 at a position displaced rearward by the elastic force of the elastic portion 44c (see FIG. 4).
[0039]
In this state, when the second front tilt detection lever 39 swings leftward, the lock plate releasing member 38 swings leftward via the cancel spring member 44 locked by the locking portion 44d, and the lock plate releasing member 38 rotates. When the rod 20a of the seat lock release operation arm 20 is pushed down (the seat lock release operation arm 20 is lifted), the lock plate 18 swings downward (see FIG. 5).
[0040]
The locking portion 44d of the cancel spring member 44 is pulled by the cable 45 when the claw member 29 of the catch 24 moves leftward to the non-engagement position where the fork member 27 is disengaged, and the elastic portion When it is displaced forward against the elastic force of 44c, the locking of the second front tilt detection lever 39 is released (see FIG. 6).
[0041]
In this state, when the second front tilt detection lever 39 swings leftward, the second front tilt detection lever 39 is not locked by the locking portion 44d of the cancel spring member 44, so that the lock plate release member 38 rotates leftward. Without being moved, only the second front tilt detection lever 39 swings to the left due to the swing.
[0042]
The operation of the seat walk-in cancel device configured as described above will be described.
[0043]
When the walk-in operation is performed, the reclining mechanism is operated from the rearwardly inclined state of the seat back 3 as shown in FIG. 8A to tilt the seat back 3 forward as shown in FIG. 8B. The pin 36 of the seat back 3 causes the first front tilt detection lever 35 to pivot leftward, and the second front tilt detection lever 39 also pivots leftward via the walk-in cable 41.
[0044]
Since the second front tilt detection member 39 is locked by the locking portion 44d of the cancel spring member 44, when the second front tilt detection lever 39 swings leftward, the cancel locked by the locking portion 44d. The lock plate releasing member 38 is pivoted to the left via the spring member 44, and the rod 20a of the seat lock releasing operation arm 20 is pushed down by the lock plate releasing member 38 so that the lock plate 18 is pivoted downward. Become. As a result, the lock hole 18b of the lock plate 18 comes off the lock projection 8a of the lower channel 8, and the upper channel 9 (seat cushion 2) can slide with respect to the lower channel 8.
[0045]
Thus, the seat 1 can be slid forward, so that the occupant in the rear seat can easily get on and off.
[0046]
On the other hand, in the case of operating the table (luggage compartment) mode, when the manual operation member 30 is pulled up from the state of FIG. 8A, the claw member 29 is swung left to the disengaged position, and the fork member 27 is moved. The biasing force of the spring 31 swings to the left to release the engagement of the striker 23.
[0047]
Thus, as shown in FIG. 9A, the seat cushion 2 can be flipped forward around the hinge pin 22 of the seat fixing mechanism 14.
[0048]
When the claw member 29 is pivoted leftward to the disengaged position by the lifting operation of the manual operation member 30, the locking portion 44d of the cancel spring member 44 is displaced forward through the cable 45, and the second forward tilt detection is performed. The locking of the lever 39 is released.
[0049]
In this state, when the reclining mechanism is operated and the seat back 3 is tilted forward as shown in FIG. 9B, the pin 36 of the seat back 3 causes the first forward tilt detection lever 35 to swing leftward, and the walk-in is performed. The second front tilt detection lever 39 is also rotated leftward through the cable 41.
[0050]
At this time, since the second front tilt detection lever 39 is not locked by the locking portion 44d of the cancel spring member 44, only the second front tilt detection lever 39 remains without the lock plate release member 38 being left-turned. Begins to swing left due to the swing.
[0051]
That is, since the lock plate release member 38 is not swiveled leftward, the rod 20a of the seat lock release operation arm 20 cannot be pushed down, and the lock hole 18b of the lock plate 18 does not come off from the lock projection 8a of the lower channel 8, so that The upper channel 9 (seat cushion 2) cannot slide with respect to the lower channel 8 (walk-in cancellation).
[0052]
When the fork member 27 of the catch 24 is disengaged and swings leftward, the projection 27a of the fork member 27 holds the claw member 29 at the non-engagement position. While jumping forward, the second forward tilt detection lever 39 continues to swing left and right, that is, the walk-in cancel state is maintained.
[0053]
Thereby, the flip-up operation of the seat cushion 2 and the forward operation of the seat back 3 can be easily performed.
[0054]
According to the present embodiment, the first and second canceling spring members 44 of the canceling mechanism 43 are linked by the cable 45 to the unlocking operation of the claw member 29 by the manual operation member 30 of the seat locking mechanism 13 of the seat cushion 2. Since the release (walk-in) of the seat slide lock of the lock plate release member 38 by the second front tilt detection members 35 and 39 can be canceled, the walk-in cancellation operation as in the related art can be cancelled. By simply flipping up the seat cushion 2 and moving the seat back 3 forward, the seat back 3 can be used as a table or the luggage compartment can be flattened, thereby improving operability. .
[Brief description of the drawings]
FIG. 1 is a perspective view of an automobile seat in which a seat portion is seen through.
FIGS. 2A and 2B show a seat slide mechanism on one side, wherein FIG. 2A is an exploded perspective view and FIG. 2B is a plan view.
FIG. 3 is an exploded perspective view of a walk-in mechanism and a cancel mechanism.
FIG. 4 is a plan view of a seat locking mechanism, a walk-in mechanism, and a canceling mechanism.
FIG. 5 is a front view of a seat locking mechanism, a walk-in mechanism, and a cancel mechanism during walk-in.
FIG. 6 is a plan view of a sheet locking mechanism, a walk-in mechanism, and a cancel mechanism at the time of walk-in cancellation.
7A is a plan sectional view of a seat locking mechanism, and FIG. 7B is a plan sectional view of a walk-in mechanism and a cancel mechanism.
8 (a) is a side view and FIG. 8 (b) is a side view at the time of walk-in. FIG.
9 (a) is a side view when the seat cushion is flipped up, and FIG. 9 (b) is a side view when the seat back is tilted forward. FIG.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 automobile seat 2 seat cushion 3 seat back 6 seat slide mechanism 13 seat locking mechanism 14 seat fixing mechanism 16 seat slide lock mechanism 18 lock plate 23 striker 27 fork member 29 claw member 30 hand operation member 33 walk-in mechanisms 35, 39 Front tilt detection lever 43 Cancel mechanism 44 Cancel spring member

Claims (3)

A seat slide mechanism, a seat slide lock mechanism, and a walk-in mechanism that allows a seat slide to be released when the seat back is tilted forward and the seat slide lock is released, and the seat cushion is flipped forward. In the seat where the seat back can be moved forward after raising,
A seat locking mechanism for locking the seat cushion to the seat slide mechanism at a seating position is provided, and a cancel mechanism for canceling release of the seat slide lock in conjunction with an unlocking operation of the seat locking mechanism is provided. A walk-in canceling device for a seat, comprising: The seat locking mechanism includes a striker provided on one of the seat slide mechanism and the seat cushion, and a fork member and a claw member provided on the other, and the fork member strikes at the seating position of the seat cushion. When the claw member locks the fork member at the engagement position and the claw member is moved to the non-engagement position by the operation of the manual operation member connected to the claw member, the fork member At the same time when the striker is disengaged, the claw member is held at the non-engagement position, and the seat cushion can be flipped forward. 2. The seat walk-in canceling device according to claim 1, wherein cancellation of release of the seat slide lock is cancelled. The walk-in mechanism is provided with a forward tilt detecting member for detecting the forward tilt of the seat back, and a lock plate release member capable of unlocking a lock plate of the seat slide lock mechanism, and the cancel mechanism includes: A canceling member for locking or unlocking the front tilt detection member is provided. The cancel member locks the front tilt detection member in conjunction with the movement of the engagement position of the claw member, and In conjunction with the detection member, the lock plate release member is unlocked, and the front tilt detection member is unlocked in conjunction with the movement of the non-engagement position of the claw member. 3. The seat walk-in canceling device according to claim 2, wherein the lock plate releasing member is configured not to perform the unlocking operation.

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