JP2582817Y2 - Vehicle seat truck - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vehicle seat truck.

[0002]

2. Description of the Related Art As one type of vehicle seat track, as shown in a publication "Automotive Engineering Handbook, Vol. 6, pp. 1-26 (published by the Society of Automotive Engineers of Japan)", it is assembled on a fixed side rail. A lock plate attached to the fixed side rail, a handle rotatably supported on the movable side rail slidably mounted on the fixed side rail, and a lock operation provided on the handle, the lock plate being rotated by the handle. A lock mechanism having a lock lever for engaging and disengaging one of a number of engagement portions provided at predetermined intervals in a longitudinal direction, and an engagement portion of the lock plate of the lock lever by operating the handle; There is a vehicle seat truck in which the engagement with the movable side rail is released to release the lock on the fixed side rail.

[0003]

The seat track of this type adjusts the position of the movable rail in the front-rear direction to adjust the position of the seat supported on the rail in the front-rear direction. The lock position is determined by the position of the engagement portion provided on the lock plate, and the interval between the adjustment positions is determined by the interval between the engagement portions. Therefore, the seat track of this type cannot finely adjust the position of the seat in the front-rear direction, and cannot necessarily be said to have a sufficient position adjusting function. Accordingly, an object of the present invention is to enable fine adjustment in the front-rear direction in this type of seat track.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a seat track of the type described above, wherein
Plate provided with a nut member, advancing and retracting the same lock plate with assembled movably predetermined amount in the longitudinal direction on the fixed side rail, the nut member on the fixed side rail
Restrict the movement of the screw that can be screwed and make it rotatable
Support the lock by rotating the screw
Fixing the lock plate in engagement with the lever
It is characterized by being movable by a predetermined amount with respect to the side rail .

[0005]

In the seat truck having the above-mentioned structure , when the screw is not operated , the locking mechanism is locked similarly to the conventional seat truck of this type .
The lock lever is engaged with the lock plate
The moving side rail is locked to the fixed side rail, and if the lock of the movable side rail with respect to the fixed side rail is released by the lock mechanism , the position of the movable side rail in the front-rear direction can be adjusted. The position of the seat in the front-rear direction can be adjusted at a position corresponding to the portion and for each interval between the engaging portions. The state the in seat track, engaged with the lock lever more lock plates provided on the fixed side rail to the rotational operation of Sukuryuu
When the lock plate is moved, the lock lever that engages with the engagement portion of the lock plate, the handle that is integral with the lock lever, and the movable rail that supports the handle are integrated in the same direction as the lock plate. Move to.

[0006] Such a movement of the movable side rail is performed by a screw.
Can be performed steplessly in accordance with the amount of rotation operation of the movable rail.If such stepless position adjustment and the above-described position adjustment of the movable side rail are combined, fine adjustment of the position of the movable side rail in the front-rear direction can be performed. The position of the seat in the front-rear direction can be finely adjusted. In addition, such fine adjustment operations
In the condition, the lock plate is engaged with the lock lever
It is done by moving it back and forth with
Since it does not move the lever, the lock lever
Has no effect on the engagement of the
And the reliability of the lock holding function of the lock mechanism is high.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 to 3 show an assembled state of a seat track according to the present invention, and FIG. Is shown in an exploded perspective view. The seat track includes a fixed side rail 11 and a movable side rail 12, a lock mechanism 20, and a fine adjustment mechanism 30. Fixed rail 1
Numeral 1 is fixed to the vehicle floor by a pair of front and rear brackets 13a and 13b. A movable rail 12 is fitted over the fixed rail 11 so as to be slidable in the longitudinal direction. A well-known roller (not shown) and a pair of roller guides supporting a plurality of balls are interposed between the rails 11 and 12 so that the movable rail 12 can slide smoothly in the longitudinal direction. .

The lock mechanism 20 includes a lock plate 21, a seat track handle 22, a lock lever 23, and a torsion spring 24. The lock plate 21 is a long plate, and has a large number of engagement ports 21a formed at predetermined intervals in the longitudinal direction.
In addition, a long hole 21b is formed at a protruding portion provided at three places in the longitudinal direction on the side edge portion, extending in the longitudinal direction by a predetermined amount. Each pin 11a, 11b, 11c fixed to the lower surface of the bottom of the fixed rail 11 by welding or caulking is inserted into each long hole 21b.
Are inserted, and the tips of the pins 11a to 11c are caulked to support the lock plate 21 on the lower surface of the fixed-side plate 11 while allowing a predetermined amount of movement in the longitudinal direction. In this state, each engagement port 21 of the lock plate 21 is
a is located on one side of the fixed side rail 11.

The seat track handle 22 has a long rod portion 22a and an operating portion 22b bent at the tip thereof.
The rod portion 22a is rotatably supported by a handle bracket 12a and a support bracket 12b which are fixed to the upper surface of the movable rail 12 and protrude to one side thereof. positioned. The rod portion 22 of the seat track handle 22
The lock lever 23 is fixed to a. The distal end engaging portion 23a of the lock lever 23 faces a portion of the lock plate 21 where each of the engagement openings 21a is formed.

The distal end engaging portion 23a of the lock lever 23 advances and retreats from and engages with each of the engaging openings 21a. When engaged with the engaging opening 21a, the movable side rail 12 is connected to the fixed side rail 11a. To lock. Torsion spring 24
Is the seat track handle 22 and handle bracket 1
2a, the seat track handle 22
At the end 2 of the lock lever 23
3a is engaged with one of the engagement openings 21a of the lock plate 21.

The fine adjustment mechanism 30 includes an adjustment screw 31, a weld nut 32, a weld guide 33, and a rotation handle 34. Weld nut 32
Is fixed to one end of the lock plate 21 and the weld guide 33 is fixed to one side of the front bracket 13a. The two 32 and 33 are located on the same coaxial line. The adjusting screw 31 penetrates through the weld guide 33 and is screwed to the weld nut 32 so as to be able to advance and retreat, and is supported by the weld guide 33 by a pair of stoppers 35a and 35b to restrict movement in the longitudinal direction. . The rotation operation handle 34 is fixed to the tip of the adjustment screw 31.

In the seat track constructed as described above, the lock plate 21 constituting the lock mechanism 20 is provided.
The movable side rail 12 is locked to the fixed side rail 11 by the engagement of the distal end engagement portion 23a of the lock lever 23 with each of the engagement openings 21a, thereby fixing a seat (not shown).
In this state, when the seat track handle 22 is rotated, the lock lever 23 is rotated to rotate the lock lever 23.
The engagement of the distal end engaging portion 23a with the engaging opening 21a is released, and the lock of the movable side rail 12 with respect to the fixed side rail 11 is released. As a result, the movable rail 12 is slidable in the front-rear direction, so that the seat can be moved to an arbitrary position. Thereafter, the turning operation of the seat track handle 22 is released to fix the seat at the arbitrary position . be able to.

On the other hand, the operation handle 34 of the fine adjustment mechanism 30
When the is rotated, the adjusting screw 31 rotates, and the weld nut 32 screwed to the screw 31 moves forward and backward. Therefore, the lock plate 21 integrated with the weld nut 32 moves in the front-rear direction with respect to the fixed-side rail 11 according to the amount of rotation of the operation handle 34. In this case, since the movable side rail 12 is locked with respect to the lock plate 21 by the lock mechanism 20, the movable side rail 12 is
It slides in the front-back direction integrally with 1. Therefore, in the seat track, the position in the front-rear direction of the seat can be finely adjusted steplessly by rotating the operation handle 34 without releasing the lock of the movable rail 12 with respect to the lock plate 21.

1 to 3 show a state of fine adjustment of the movable rail 12 in the front-rear direction. Each of the drawings shows a state in which the movable rail 12 is locked at the rearmost portion with respect to the lock plate 21.
Shows an intermediate state by the fine adjustment mechanism 30. FIG.
In the seat track in the state shown in FIG.
Is rotated in the forward direction, for example, the lock plate 2 is rotated.
1 and the movable side rail 12 advance to the fixed side rail 11
The distance between the front end and the movable rail 12 is reduced from L0 to L1 as shown in FIG. When the operating handle 34 is rotated in the reverse direction, for example, in the seat track shown in FIG. 1, the lock plate 21 and the movable side rail 12 are retracted, and the distance between the leading ends of the two rails 11, 12 is shown in FIG. Thus, the distance L2 is enlarged.

Therefore, by using the adjustment in the front-rear direction by the fine adjustment mechanism 30 together with the adjustment in the front-rear direction by unlocking the lock mechanism 20, the position of the seat in the front-rear direction is adjusted to an arbitrary position. And the adjustment can be made quickly. again
To perform the fine adjustment, lock the lock plate 21 with the lock lever.
-23 to move in the front-back direction while engaged with
Move the lock lever 23
The lock plate of the lock lever 23 is
21 has no effect on the state of engagement with
The reliability of the lock holding function is high.

[Brief description of the drawings]

FIG. 1 is a side view of a seat track according to an embodiment of the present invention.

FIG. 2 is a side view showing an advanced state of a movable rail in the seat track by a fine adjustment mechanism.

FIG. 3 is a side view showing a retreat state of the movable rail in the seat track by a fine adjustment mechanism.

FIG. 4 is an exploded perspective view of the seat track.

[Explanation of symbols]

11: fixed side rail, 12: movable side rail, 20: locking mechanism, 21: lock plate, 21b: long hole, 22 ...
Seat track handle, 23 ... lock lever, 30 ...
Fine adjustment mechanism, 31: Fine adjustment screw, 32: Weld nut, 34: Rotating operation handle.

Claims (1)

(57) [Scope of request for utility model registration] A lock plate mounted on the fixed rail, a handle rotatably supported on a movable rail mounted on the fixed rail slidably in a longitudinal direction, and a handle provided on the handle. A lock mechanism having a lock lever which is engaged and disengaged from one of a number of engagement portions provided on the lock plate at a predetermined interval in a longitudinal direction by a turning operation of a handle, and by operating the handle, in the lock plate vehicle seat track to release the lock to release the engagement with the fixed rail of said movable rail relative to the engagement portion of the lock lever, wherein
A nut member is provided on the lock plate of the lock mechanism.
Te, along with mounting the same lock plate movably predetermined amount in the longitudinal direction on the fixed side rail, said fixed-side rail
A screw that is screwed into the nut member so that it can advance and retreat.
Restrict the movement and support it rotatably so that the screw
By the rolling operation, the lock lever is engaged with the lock lever.
Lock plate can be moved by a predetermined amount with respect to the fixed side rail
A vehicle seat truck characterized by the ability to function .