JPH10236187A - Seat slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent looseness and rattle generated in a clearance between a lower rail and a lock lever. SOLUTION: A pressure lever 15 is attached on the upper rail 12 side, and an engaging recessed part 17b is formed on the lower rail 11 side, which is engaged so that the pressure lever 15 can be released. By elastically-engaging the pressure lever 15 with the engaging recessed part 17b, both rails 11, 12 are pressed relatively in the longitudinal direction to regulate movement of the upper rail 12 to the lower rail 11 with prescribed spring force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a seat slide device.

[0002]

2. Description of the Related Art In general, a seat slide device has a lower rail fixed to a floor side, an upper rail movably mounted on the lower rail in a longitudinal direction, and the upper rail releasably fixed to the lower rail. It has a lock mechanism.

Further, as one type of the seat slide device, the lock mechanism includes a lock hole provided on the lower rail side, a lock member provided on the upper rail side and removably entering the lock hole, and the upper rail. There is a configuration provided with a lock release member provided on the side to release the lock member from the lock hole to release the fixing of the upper rail to the lower rail.

In this type of seat slide device, a lock member provided on the upper rail side is inserted into a lock hole provided on the lower rail side to restrict longitudinal movement of the upper rail with respect to the lower rail, so that the upper rail is connected to the lower rail. The upper rail is fixed to the lower rail by releasing the lock member from the lock hole and releasing the upper rail from moving in the longitudinal direction with respect to the lower rail. The position of the seat in the front-rear direction can be adjusted.

[0005]

As described above, in the seat slide device of this type, the movement of the upper rail relative to the lower rail is restricted by allowing the lock member provided on the upper rail to enter the lock hole provided on the lower rail. In this state,
Each edge in the longitudinal direction of the lock hole is engaged with each end of the lock member to restrict the movement of the lock member. In such a fixing structure, due to restrictions on manufacturing accuracy of each component, assembly accuracy, and the like, a gap is inevitable between each end of the lock member and each edge of the lock hole on the lower rail side,
Due to this gap, backlash is generated between the lock member and the lower rail, affecting the stability of the fixed state and generating backlash.

Accordingly, an object of the present invention is to provide a seat slide apparatus of this type, in which even if there is an inevitable gap between the lower rail and the lock member, there is no play between the lower rail and the lock member. Accordingly, it is an object to improve the stability of the fixed state of the upper rail with respect to the lower rail, and to prevent rattling.

[0007]

According to the present invention, a lower rail fixed to a floor side, an upper rail movably mounted on the lower rail in a longitudinal direction, and the upper rail being releasably fixed to the lower rail. A lock hole provided on the lower rail side, a lock member provided on the upper rail side and removably entering the lock hole, and a lock lever provided on the upper rail side. The present invention is applied to a seat slide device of a type including a lock release member for releasing the upper rail from the lower rail by operating the upper rail from the lock hole.

According to the present invention, there is provided a seat slide device of the type described above, wherein a pressing member is provided on the upper rail side, and an engaging portion for releasably engaging the pressing member is provided on the lower rail side. The two rails are relatively pressed in the longitudinal direction by elastically engaging the pressing member with the engaging portion.

In the seat slide device according to the present invention, the unlocking member is configured as an unlocking lever and the pressing member is configured as a pressing lever, and both levers are biased toward the upper rail to rotate. In addition to movably assembling, it is possible to adopt a configuration in which the releasing operations of these two levers are linked with each other.

Further, in the seat slide device according to the present invention, the lock member is formed as a lock lever and connected to the lock release lever. To move back and forth.

[0011]

According to the seat slide apparatus constructed as described above, the state in which the upper rail is restricted from moving with respect to the lower rail is such that the lock member provided on the upper rail side is inserted into the lock hole provided on the lower rail side. It is constituted by engaging each edge in the longitudinal direction with each end of the lock member to restrict the movement of the lock member. Therefore, in such a fixing structure, a gap is formed between each end of the lock member and each edge of the lock hole on the lower rail side due to restrictions on manufacturing accuracy, assembly accuracy, and the like of each component, as in the related art. That is inevitable.

However, in the seat slide device according to the present invention, the pressing member provided on the upper rail side is resiliently engaged with the engaging portion provided on the lower rail side.
The upper rail and the lower rail are relatively pressed in the longitudinal direction, and the relative movement between the two rails is regulated by a predetermined force.

Therefore, even if there is a gap between each end of the lock member and each edge of the lock hole on the lower rail side, there is no relative movement between the upper rail and the lower rail. Does not cause backlash between the upper rail and the lower rail, does not affect the stability of the fixed state of the upper rail to the lower rail, and does not generate backlash.

In the seat slide device according to the present invention, the unlocking member is configured as an unlocking lever and the pressing member is configured as a pressing lever, and both levers are spring-biased toward the upper rail to be rotatable. If the releasing operation of these two levers is linked to each other while being assembled, the movement of the upper rail with respect to the lower rail and the operation of releasing the movement restriction are facilitated. At the same time, if the lock member is configured as a lock lever and connected to the lock release lever, and the lock lever is moved forward and backward with respect to the lock hole by the rotation of the lock release lever, the lock mechanism and the lock mechanism can be used. The structure itself can be simple.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a side view of main parts of a seat slide device according to an example of the present invention. The seat slide device is for a vehicle seat, and as shown in FIGS. 1 to 3, a lower rail 11, an upper rail 12 having a predetermined length,
A lock lever 13, a lock release lever 14, a pressing lever 15, a pair of tension springs 16a and 16b, and a lower bracket 17 are provided.

As shown in FIGS. 2 and 3, the lower rail 11 has a substantially U-shape that opens upward.
In a state of being accommodated in the lower bracket 17, it is fixed to the center of the lower bracket 17 at the lower surface of the center of the lower bracket 17. The upper rail 12 has a substantially inverted T-shape, and is fitted to the lower rail 11 via a plurality of rollers and balls (not shown) so as to be slidable in the longitudinal direction. These lower rail 11 and upper rail 12
Is fixed to the floor in the vehicle cabin via the lower bracket 17 in this state.

The lower rail 11 has a lock hole 1 at the center of the bottom as shown in FIGS.
1a is formed, and a lock hole 17a is also formed at the center of the bottom of the lower bracket 17. The lock holes 11a and 17a are opposed to each other with a predetermined width in the longitudinal direction, and are formed in a plurality at predetermined intervals in the longitudinal direction.

On the other hand, as shown in FIG. 2 and FIGS. 5 to 7, a reinforcing plate 18 is fixed to the lower surface at the center of the bottom of the upper rail 12, and the upper rail 12 and the reinforcing plate 18 face each other. Insertion holes 12a, 18
a is formed. The two insertion holes 12a and 18a face the lock holes 11a of the lower rail 11, respectively. In the upper rail 12, an arc-shaped guide hole 12b extending in the up-down direction is formed at the upper part.

The lock lever 13 is shown in FIGS.
As shown in FIG. 7, an arc-shaped guide hole 1 which is a rectangle which is long in the vertical direction and which extends laterally slightly above the center.
3a, which are supported by a lock release lever 14 to be described later via a connecting pin 14d.
Each of the insertion holes 12a of the upper rail 12 and the reinforcing plate 18,
The lower rail 11 and the lower bracket 17 are inserted into the lock holes 11a and 17a.

As shown in FIGS. 1, 2, and 5 to 7, the lock release lever 14 includes a lever main body 14a and a latch bracket 14 provided on an upper portion of the lever main body 14a.
b, and a receiving portion 14c provided below the lever body 14a
The receiving portion 14c projects outward at right angles to the lever body 14a. Also,
A connection pin 14d is attached to the tip of the lever body 14a. The connecting pin 14d projects inward at right angles to the lever body 14a.

The lock release lever 14 is connected to a connecting pin 14d.
Is inserted through the guide hole 12b of the upper rail 12 and the guide hole 13a of the lock lever 13 and is rotatably mounted on the side surface of the upper rail 12 via support pins 14e so as to be able to rotate back and forth and up and down. The lever 13 is supported movably in the vertical direction.

An operation cable 19 is connected to the lock release lever 14 at the upper end of the lever body 14a, and one end of a tension spring 16a is hooked to a hook bracket 14b. The other end of the tension spring 16a is hooked on the upper rail 12, and urges the lock release lever 14 clockwise in the drawing.

As shown in FIGS. 1 and 4 to 7, the pressing lever 15 includes a lever body 15a, a latching bracket 15b provided above an intermediate portion of the lever body 15a, and an intermediate portion of the lever body 15a. Engaging portion 15c provided below
And a received part 15d provided at the tip of the lever body 15a
It consists of. The lever main body 15a is bent outward at the base end thereof, extends rearward from the bent part by a predetermined length, and the latch bracket 15b protrudes outward perpendicularly to the lever main body 15a to form an engaging part 15c. Extends downward and forward by a predetermined length, and the received portion 15d is bent in a substantially U-shape.

The pressing lever 15 is attached to the side surface of the upper rail 12 via a support pin 15e so as to be rotatable in the front-rear and up-down directions.
One end of a tension spring 16b is hooked to the end b.
The other end of the tension spring 16b is the upper rail 1
2 and urges the pressing lever 15 clockwise in the figure.

As a result, the pressing lever 15 extends substantially horizontally rearward, and resiliently engages the engaging portion 15c with the rear end of the engaging recess 17b provided in the lower bracket 17. 17 is pressed backward. Therefore, the pressing lever 15 presses the upper rail 12 forward against the lower bracket 17. Further, in this state, the pressing lever 15 positions the received portion 15d in proximity to and above the receiving portion 14c of the lock release lever 14.

The operation cable 19 is an outer tube 19
a, and an inner wire 19b inserted through the outer tube 19a. The tip of the outer tube 19a is fixed to the upper rail 12, and the tip of the inner wire 19b is connected to the upper end of the lock release lever 14. Thereby, the lock release lever 14 is moved to the inner wire 19b.
When the operation lever (not shown) connected to the base end is rotated, the operation lever is rotated counterclockwise in the figure, and when the operation is released, the operation is returned clockwise in the figure.

In the seat slide device thus configured, the lock lever 13 is inserted through the insertion holes 12a and 18a of the upper rail 12 and the reinforcing plate 18, and the lock holes 1 of the lower rail 11 and the lock bracket 17 are inserted.
1a and 17a, and regulates the movement of the upper rail 12 with respect to the lower rail 11 in the front-rear direction. The engaging portion 15c of the pressing lever 15 is resiliently engaged with the engaging recess 17b of the lower bracket 17, and presses the upper rail 12 forward.

In this state, when the operation lever (not shown) is rotated, the lock release lever 14 is rotated in the counterclockwise direction in the figure, and at this time, the lock release lever 1 is rotated.
4 receives the received portion 15d of the pressing lever 15, and integrally rotates the pressing lever 15 counterclockwise in the drawing.

With this rotation operation, the lock lever 13
Moves upward, retreats from the lock holes 11a and 17a of the lower rail 11 and the lower bracket 17, releases the movement restriction of the upper rail 12 with respect to the lower rail 11, and releases the lower bracket 17 of the engaging portion 15c of the pressing lever 15 from the lower bracket 17. The engagement with the engagement recess 17b is released.

Therefore, the upper rail 12 can be moved in the front-rear direction with respect to the lower rail 11, and the upper rail 12 can be moved in the front-rear direction to release the turning operation of the operation lever at a position corresponding to another lock hole. For example, the movement with respect to the lower rail 11 can be restricted.

As described above, in the seat slide device, the movement restriction state of the upper rail 12 with respect to the lower rail 11 is determined by setting the lock lever 13 attached to the upper rail 12 on the lower rail 11 side (the lower rail 11 and the lower bracket 17). 11a, 17a, and the longitudinal edges of the lock holes 11a, 17a are engaged with the respective ends of the lock lever 13 so that the lock lever 1
3 by restricting the movement of the third person. Therefore, in such a fixing structure, as in the conventional case, the lock lever 13 is restricted due to the restrictions on the manufacturing accuracy and assembly accuracy of each component.
And the lock holes 11a and 17a on the lower rail 11 side.
It is unavoidable that a gap is generated between each edge portion.

However, in the seat slide device, the pressing lever 1 attached to the upper rail 12 side is used.
5 is resiliently engaged with an engaging recess 17b provided on the lower rail 11 side (lower bracket 17).
The upper rail 12 and the lower rail 12 are relatively pressed in the front-rear direction, and the relative movement of the two rails 11, 12 is regulated by a predetermined force.

Therefore, even if there is a gap between each end of the lock lever 13 and each edge of the lock holes 11a and 17a on the lower rail 11, the relative movement between the upper rail 12 and the lower rail 11 is maintained. This gap does not occur, and this gap does not cause backlash between the upper rail 12 and the lower rail 11.
It does not affect the stability of the fixed state against
Also, no rattling sound is generated.

In the seat slide device,
A lock release lever 14 is employed as a lock release member, and a pressing lever 15 is employed as a pressing member.
The levers 14 and 15 are rotatably attached to the upper rail 12 by tension springs 16a and 16b by tension springs 16a and 16b, and the rotating operations of the levers 14 and 15 are linked to each other. Therefore, it is possible to easily perform the movement regulation of the upper rail 12 with respect to the lower rail 11 and the operation of releasing the movement regulation. At the same time, the lock lever 13 is used as a lock member.
And the lock lever 13 is released from the lock release lever 14.
And the lock lever 13 is moved forward and backward with respect to each of the lock holes 11a and 17a by the rotation operation of the lock release lever 14, so that the lock mechanism itself can have a simple structure. .

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of a seat slide device according to an example of the present invention.

FIG. 2 shows an arrow 2- in FIG. 1 in the seat slide device.
It is a vertical front view of a two-line direction.

FIG. 3 is an arrow 3- in FIG. 1 of the seat slide device.
It is a vertical front view of a three-line direction.

FIG. 4 is a perspective view of a pressing lever included in the seat slide device.

FIG. 5 is a side view showing a main part based on a lock lever in the seat slide device.

FIG. 6 is a side view showing a main part of the seat slide device based on an upper rail.

FIG. 7 is a side view showing a main part of the seat slide device based on an unlock lever.

[Explanation of symbols]

11 Lower rail, 11a Lock hole, 12 Upper rail, 12a Insertion hole, 12b Guide hole, 13 Lock lever, 13a Guide hole, 14 Lock release lever, 14a Lever body, 14b Latch bracket, 1
4c: receiving portion, 14d: connecting pin, 14e: supporting pin, 1
5 ... Pressing lever, 15a ... Lever body, 15b ... Hook bracket, 15c ... Engaging part, 15d ... Received part, 15e ...
Support pins, 16a, 16b ... tension springs, 17 ...
Lower bracket, 17a: lock hole, 17b: engagement recess, 18: reinforcement plate, 18a: insertion hole, 19: operation cable, 19a: outer tube, 19b: inner wire.

Claims (3)

[Claims] A lower rail fixed to the floor, an upper rail movably mounted on the lower rail in a longitudinal direction, and a lock mechanism for releasably fixing the upper rail to the lower rail. A lock member provided on the lower rail side, a lock member provided on the upper rail side and removably entering the lock hole, and a retreat operation of the lock member provided on the upper rail side from the lock hole. In a seat slide device provided with a lock release member for releasing the fixing of the upper rail to the lower rail, a pressing member is provided on the upper rail side, and the pressing member is releasably engaged with the lower rail side. A part is provided, and the pressing member is resiliently engaged with the engaging part, so that the two rails Seat slide device being characterized in that relatively presses the side direction. 2. The seat slide device according to claim 1, wherein the unlocking member is configured as an unlocking lever and the pressing member is configured as a pressing lever, and both levers are biased toward the upper rail by a spring. A sheet-sliced apparatus wherein the levers are rotatably mounted and the releasing operations of both levers are linked with each other. 3. The seat slide device according to claim 2, wherein the lock member is configured as a lock lever and connected to the lock release lever, and the lock lever is locked by the rotation of the lock release lever. A seat slide device for moving back and forth with respect to a hole.