JP2014046812A - Slide lever connection structure - Google Patents

Abstract

To provide a seat slide rail device for a vehicle that has fewer parts than before, has a simple device structure, and is easy to assemble.
A slide rail member constituting a slide rail device includes a lower rail, an upper rail, a lock holder attached to the upper rail, a lock plate engaged with the lock holder, and a lock holder. And a spring that biases the lock plate 80, a lever bracket that engages with the lock plate 80, an operation lever 30 that is coupled to the lever bracket, and a lever spring 50 that presses the operation lever 30. The present invention also provides a seat slide rail device for a vehicle having a small number of parts, a simple device structure and easy assembly.
[Selection] Figure 3

Description

The present invention relates to a slide rail device for sliding a vehicle seat back and forth to position it at a predetermined position.

A slide rail device for sliding a vehicle seat back and forth and positioning it at a predetermined position is disclosed in Patent Document 1 below. The slide rail device includes a lower rail, an upper rail attached to the lower rail so as to be slidable back and forth, and a lock mechanism for locking or unlocking the upper rail with respect to the lower rail. The locking mechanism includes a lock plate that is rotatably provided in the upper rail, an elastic member that urges the lock plate in the upward rotation direction, an operating lever, and a pin that slides on the upper rail via a pin. A lock plate actuating member that is movably provided and has a front end connected to the operation lever, and an elastic member that constantly biases the front end of the lock plate actuating member downward.

According to this lock mechanism, the upper rail is locked to the lower rail by engaging the lock pawl of the lock plate biased upward by the elastic member with the lock pawl of the lower rail. On the other hand, the lock is released when the passenger pulls up the operation lever. That is, as the operating lever is pulled up, the operating lever slides in the direction of lifting its front end against the biasing force of the elastic member, while the rear end of the operating lever locks against the biasing force of the elastic member. Rotate the plate downward. As a result, the lock plate is detached from the lock pawl of the lower rail, and the upper rail is unlocked with respect to the lower rail.

JP 2007-131033

However, in the conventional slide rail device described in Patent Document 1, in order to bias each member of the lock mechanism, at least an elastic member that biases the rear end portion of the lock member in the upward rotation direction, An elastic member that biases the front end of the lock member downward is required. As described above, the conventional slide rail device requires two separate and independent elastic members (biasing springs), and thus has a drawback that the number of parts is large and assembly is difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle slide rail device that is advantageous in terms of ease of assembly and cost by reducing the number of parts by simplifying the structure as compared with the prior art.

In order to solve the above-described problem, in the slide rail device according to claim 1, the lower rail having a plurality of lock teeth, the upper rail attached to the lower rail so as to be slidable in the front-rear direction, and the upper rail are attached to the upper rail. A lock holder, a lock plate that engages with the lock holder, a spring that biases the lock holder and the lock plate, a lever bracket that engages with the lock plate, and an operation lever coupled to the lever bracket; A lever spring that presses the operation lever, and the operation of the operation lever is transmitted to the lock plate via the lever bracket, and the lock plate is engageable with the lock teeth of the lower rail. And the engaging portion has a locking tooth of the lower rail The spring is attached to the upper rail so as to be able to rotate between an engaging lock position and an unlock position where the lock teeth of the lower rail are disengaged, and the spring has a front end on the lock holder and a rear end. An end portion is engaged with the lock plate, and a rear end portion of a spring is mounted so as to urge the lock plate from the unlock position toward the lock position.

3. The slide rail device according to claim 2, wherein the operation lever can be inserted with a groove portion that can be fitted to a cut-and-raised portion provided in the lever bracket and a curved portion provided at a tip of the lever spring. An insertion portion is provided, and the bending portion of the lever spring is inserted into the insertion portion of the operation lever, whereby the operation lever is connected to the slide rail device to prevent it from coming off.

The slide rail device according to claim 3, wherein when the operation lever is operated in a downward direction, the lever bracket is disengaged from the cut-and-raised portion and can be rotated by the operation lever alone. Yes.

The slide rail device according to claim 4 is characterized in that the operation lever can be removed by pushing up the bent portion of the lever spring with a tool or the like and pulling it out in the removing direction.

In the slide rail device according to claim 1, a lower rail having a plurality of lock teeth, an upper rail attached to the lower rail so as to be slidable back and forth, a lock holder attached to the upper rail, and the lock holder A lock plate to be engaged, a spring for urging the lock holder and the lock plate, a lever bracket to be engaged with the lock plate, an operation lever coupled to the lever bracket, and a lever for pressing the operation lever A spring, and the operation of the operation lever is transmitted to the lock plate via the lever bracket. The lock plate has an engagement portion that can be engaged with the lock teeth of the lower rail, and the engagement portion A locking position that engages with the locking teeth of the lower rail; and The spring is attached to the upper rail so as to be able to rotate between the unlock position where the lower rail is disengaged from the lock teeth, and the spring is engaged with the lock holder at the front end and the lock plate at the rear end. And the rear end of the spring is mounted so as to urge the lock plate from the unlock position toward the lock position. Since the lever can be urged by the lever spring and the lever bracket and the lock plate can be urged by the lever bracket, the number of parts can be reduced, the ease of assembly can be improved, and the cost can be reduced.

3. The slide rail device according to claim 2, wherein the operation lever can be inserted with a groove portion that can be fitted to a cut-and-raised portion provided in the lever bracket and a curved portion provided at a tip of the lever spring. An insertion portion is provided, and the bending portion of the lever spring is inserted into the insertion portion of the operation lever, whereby the operation lever is connected to the slide rail device to prevent it from coming off. Since the bent portion of the lever spring can also function as a connecting means for the operation lever, the number of parts can be further reduced.

The slide rail device according to claim 3, wherein when the operation lever is operated in a downward direction, the lever bracket is disengaged from the cut-and-raised portion and can be rotated by the operation lever alone. Yes. In general, the floor surface of the vehicle body to which the slide rail device is fixed is not necessarily flat as ideal, and some unevenness or distortion is inevitable. When a pair of left and right slide rail members are arranged in parallel on such a non-flat body floor, the slide of the other slide member is locked even though one slide rail member is locked due to unexpected rotation of the operating lever. Sometimes the rail member falls into an unlocked state. However, according to this configuration, even when the operation lever is operated downward due to the inclination on the vehicle body floor surface regardless of the operation of the occupant, the operation lever rotates independently and does not fall into the unlocked state. Therefore, there is no imbalance in the locked / unlocked state of the slide rail member on the left and right.

The slide rail device according to claim 4 is characterized in that the operation lever can be removed by pushing up the bent portion of the lever spring with a tool or the like and pulling it out in the removing direction. With this configuration, it is possible to easily attach and remove the lever spring.

The side view of a vehicle seat. The schematic plan view which shows the plane arrangement | positioning condition of a left-right paired slide rail apparatus. The exploded perspective view of a slide rail. The whole perspective view of a lever bracket. Sectional drawing along the longitudinal direction of the slide rail apparatus in each embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

As shown in the figure, the vehicle seat includes a seat cushion 1, a seat back 2, and a slide rail device 3.

The slide rail device 3 has a left-right symmetric structure, and includes a pair of left and right slide rail members 5 via an operation lever 30 at the front of the seat. The slide rail member 5 includes a lower rail 10, an upper rail 20, and an operation lever 30. The lower rail 10 is fixed to the floor of the vehicle body by the foot 4, and the upper rail 20 is connected to the seat cushion 1. When the operation lever 30 is not operated, the lower rail 10 and the upper rail 20 are locked, and the seat cushion 1 is fixed so as not to move back and forth. When the occupant operates the operation lever 30 upward, the lock between the lower rail 10 and the upper rail 20 is simultaneously released in both the slide rail members 5. When the lock is released, the lower rail 10 and the upper rail 20 can freely slide back and forth, and the occupant can adjust the front-rear position while sitting.

Hereinafter, the slide rail member 5 on one side will be described in detail. The slide rail member 5 mainly includes a lower rail 10, an upper rail 20, a lock member 40, a lever spring 50, a lever bracket 60, and an operation lever 30.

The lower rail 10 is made of a metal plate such as iron, and is formed in a substantially U-shaped cross section with a left-right symmetric cross section by performing press processing, bending processing, or the like. The lower rail 10 includes a flat base 11, a pair of left and right vertical walls 12 extending upward from both sides of the base, and a pair of flanges 13 folded back from the upper end 14 of each vertical wall inward and downward. And have. The vertical wall 12 and the flange portion 13 connected thereto constitute a side wall portion of the lower rail 10. The side wall 12 and the flange portion 13 are in a substantially parallel relationship, and a groove is formed between them. Further, a plurality of locking teeth 15 arranged in series at a predetermined interval are integrally formed at the lower end portions of the flange portions 13 on both sides.

Similarly, the upper rail 20 is made of a metal plate such as iron, and is formed into a substantially U-shaped cross-section with left-right symmetry by performing press processing, bending processing, or the like. The upper rail 20 includes a flat base portion 21, a pair of left and right vertical walls 22 extending downward from both sides of the base portion, and a pair of flange portions folded back outward from the lower end portion 24 of each vertical wall. And 23. The vertical wall 22 and the flange portion 23 connected to the vertical wall 22 constitute a side wall portion of the upper rail 20. Further, a substantially central portion of the upper rail 20 has a pair of left and right cutout portions 25 in which the vertical wall 22 and the flange portion 23 are cut out so as to be engageable with a lock plate 80 described later.

In the present embodiment, the retainer 7 is interposed between the left and right flange portions 23 of the upper rail 20 and the left and right groove portions of the lower rail 10, so that the upper rail 20 can slide in the longitudinal direction with respect to the lower rail 10. ing.

The lock member 40 includes a lock holder 70, a lock plate 80, and the spring 6 that biases the lock holder 70 and the lock plate 80.

The lock holder 70 is a member that can be fitted inside the upper rail 20. The lock holder 70 has a base 71 on the plane, a vertical wall 72 extending downward from one side of the base, a hook 73 of the spring 6 at one end in the longitudinal direction, and a nail hole on the opposite side of the vertical wall 72 And a claw 75a, 75b provided at the center in the short direction of the base 71. The vertical wall 72 has openings 76a, 76b, 76c that engage with a lock plate 80 described later, and a support 77 that supports the lock plate 80 from below.

The lock plate 80 is integrally formed of a long and narrow plate material, and has one end engaged with a locking claw 81 formed at a predetermined interval in a comb shape and the other end engaged with the lever bracket 60 and substantially L. An engagement portion 82 that bends in a letter shape, an insertion portion 84 that is inserted into the claw hole in the tongue piece 74 between the lock claw 81 and the engagement portion 82, and three openings in the central portion of the lock plate It has parts 83a, 83b, 83c. The lock plate 80 is arranged with the claws 75a and 75b of the lock holder facing the openings 83a and 83c from above, respectively, and the spring 6 is interposed between the hook 73 and the opening 83b of the lock holder 70. The engaging portion 82 is supported by the supporting portion 77 so as to be integrated with the lock holder 70.

The lever spring 50 is a member that can be partly fitted inside the upper rail 20. Engaging portion 51 that engages with the operating lever 30 and presses the operating lever 30 from above, a contact portion 54 that contacts the operating lever 30, a claw 52 that is inserted into the lever bracket 60 from the outside, and an operating lever during a lock-off operation described later And a fitting hole 53 into which the fitting convex portion 61c of the lever bracket serving as the rotation center of 30 can be fitted.

The lever bracket 60 is a member that can be fitted inside the lever spring 50. The lever bracket 60 has a substantially V-shaped side wall portion 61, and both side wall portions 61 are connected to each other so as to face each other substantially in parallel by a front base portion 62, a central base portion 63, and a rear base portion 64. The joint portion 65 between the front base portion 62 and the central base portion 63 of the lever bracket, the joint portion between the central base portion 63 and the rear base portion 64, and the folded portion 66 of the substantially V-shaped side wall portion 61 has an opening between the side wall portions 61. It is an area. The side wall portion 61 has an insertion slot 61a into which the lever spring claw 52 is inserted, and one front end of the side wall portion 61 has a cancel stopper 61b that functions as a stopper when canceling the operation lever 30 described later. A contact portion 62a that contacts the operation lever when the operation lever 30 is canceled is provided at the front end of the front base portion 62 that faces the cancel stopper 61b. Further, the left and right side wall portions 61 of the folded portion 66 of the lever bracket are provided with fitting convex portions 61c fitted to the fitting holes 53 of the lever springs on the outer wall surfaces thereof. The front base 62 has a claw 68 that engages with the operation lever 30. Further, the central base 63 has a vertical wall 69 that abuts against the abutment portion 54 of the lever spring. The front base 62 serves as a front engagement portion that supports and engages the operation lever 30, and the rear base 64 engages with the engagement portion 82 of the lock plate and thereby urges upward. Acts as a rear engagement part.

The operation lever 30 is inserted into the front end portions of the left and right slide rail members 5 and connected to the contact portions 54 of the lever springs in the both slide rail members 5 so that the occupant can operate the lock members 40 simultaneously. It is possible. Further, the operation lever 30 has a groove 33 extending in the width direction so that the engaging portion 51 of the lever spring can be inserted, and a groove 34 extending in the width direction so that the pawl 68 of the lever bracket can be inserted.

The slide sheet apparatus according to the embodiment of the present invention is composed of the above-described components and operates as follows.

First, a description will be given of when the slide sheet device is set (when locked). The operation lever 30 is inserted into the front end portions of the left and right slide rail members 5, and the lock plates 80 in the slide rail members are connected via the lever bracket 60, so that both the lock plates 80 can be operated simultaneously by the occupant. Is possible.

The lock holder 70 is fitted to the upper rail 20 and is integrally engaged with the lock plate 80 by a spring or the like. The lock plate 80 is supported by the upper rail 20 by being engaged with the lock holder 70, and can be rotated up and down around the engaging portion 82 with the lever bracket 60. Lock claws 81 formed at predetermined intervals in a comb shape on the lock plate are arranged in the cutout portion 26 of the upper rail so as not to interfere with the upper rail side wall. Then, as the lock claws 81 rotate upward, the lock claws 81 engage with the lock teeth 15 of the lower rail. In this manner, the upper rail 20 is locked to the lower rail 10 by the lock plate 80 being disposed at the lock position. As will be described later, the lock plate 80 releases the lock of the upper rail 20 with respect to the lower rail 10 when each lock claw 81 is detached from the lock teeth 15 of the lower rail based on the operation of the operation lever 30.

In the slide rail device 3, the lock plate 80 must always be in the locked position unless the operation lever 30 is input. In the present embodiment, the lock plate 80 is urged upward by the spring force of the spring 6 and simultaneously the operation lever 30 is urged downward by the spring force of the lever spring 50 to lock the lock plate 80. The operation lever 30 is maintained at the position at the time of setting.

Next, unlocking by operating the operation lever 30 upward will be described. When the operating lever is operated in the unlocking direction, the front base 62 and the central base 63 of the lever bracket engaged by the groove 34 and the claw 68 of the operating lever rotate upward about the fitting convex portion 61c. To do. On the other hand, since the fitting convex portion 61c is set as the rotation center, the rear base portion 64 of the lever bracket rotates downward. Then, a downward force is applied to the engagement portion 82 from the lever bracket 60 based on the engagement between the engagement portion 82 of the lock plate bent in a substantially L shape and the rear base portion 64 of the lever bracket. Thus, the lock plate 80 rotates downward in conjunction with the movement of the operation lever 30. At that time, the spring 6 stores a spring force for returning the lock plate 80 to the original position. The lock plate 80 is rotated downward by the lever bracket 60 against the upward biasing force of the spring 6. Therefore, each lock claw 81 is disengaged from the notch portion 26 of the upper rail, so that the lock plate 80 is disposed at the unlock position.

By disposing the slide rail device 3 at the unlock position, the upper rail 20 can slide back and forth with respect to the lower rail 10, and the occupant can adjust to the optimum seat position. In order to return the slide rail device 3 to the locked position again, the operation lever 30 may be released after the seat is positioned. The lever 30 is returned to the pre-operation position by the downward biasing force of the engaging portion 51 of the lever spring, and the lock plate 80 is returned to the locked position again by the upward biasing force of the spring 6.

Further, according to the slide rail device 3 of the present embodiment, the lever bracket claw 68 is engaged with the operation lever 30, and the operation lever 30 is pressed downward by the lever spring engaging portion 51, so that the lever spring By fixing in the front-rear direction by the contact portion 54 and the vertical wall 69 of the lever bracket, the number of parts can be reduced and play can be prevented.

Next, a cancel operation for operating the operation lever 30 downward will be described. When the operating lever 30 is operated downward from the initial state by the occupant, only the operating lever 30 rotates with the contact portion 62a of the lever bracket as the center of rotation. This lever operation in the opposite direction to the unlocking is called “cancel operation”.

As a result of the canceling operation, the operating lever 30 rotates upward with the abutting portion 62a of the lever bracket as the center of rotation. Therefore, the engagement between the groove 34 of the operation lever and the claw 68 of the lever bracket is released, and the operation lever 30 rotates independently along the cancel stopper 61b.

At the time of the above cancel operation, the engagement between the groove 34 of the operation lever and the claw 68 of the lever bracket is released, and it rotates independently along the cancel stopper 61b, but the engaging portion 51 of the lever spring can be inserted. Therefore, since the groove 33 extending in the width direction is provided, it is possible to prevent the operation lever 30 from falling off.

In general, the floor surface of the vehicle body to which the slide rail device 3 is fixed is not necessarily flat as ideal, and some unevenness or distortion is inevitable. When a pair of left and right slide rail members 5 are arranged in parallel on such a non-flat body floor, the other slide rail member 5 is unlocked even though one slide rail member 5 is locked. Sometimes it falls. However, according to this configuration, even when the operation lever is operated downward due to the inclination on the vehicle body floor surface regardless of the operation of the occupant, the operation lever 30 can rotate independently and fall into the unlocked state. Therefore, there is no imbalance in the locked / unlocked state of the slide rail member on the left and right.

3 Slide rail device
5 Slide rail member
10 Lower rail
20 Upper rail
30 Control lever
40 Lock member
50 lever spring
60 lever bracket
70 Lock holder
80 Lock plate

Claims (4)

A lower rail having a plurality of locking teeth;
An upper rail attached slidably back and forth to the lower rail;
A lock holder attached to the upper rail;
An engagement portion that engages with the lock holder and engages with the lock teeth of the lower rail, the lock position where the engagement portion engages with the lock teeth of the lower rail, and the disengagement from the lock teeth of the lower rail A locking plate attached so as to be rotatable between the unlocking position and
A spring for biasing the lock holder and the lock plate;
A lever bracket that engages the lock plate;
An operating lever coupled to the lever bracket;
A lever spring that presses the operation lever downward;
The spring is mounted so that the front end is engaged with the lock holder and the rear end is engaged with the lock plate, and the rear end of the spring biases the lock plate from the unlock position toward the lock position. A slide rail device characterized by being made. The operating lever is provided with a groove portion that can be fitted into the cut and raised portion provided in the lever bracket, and an insertion portion that can be inserted into a bent portion provided at the tip of the lever spring. 2. The slide rail device according to claim 1, wherein the operation lever is connected to the slide rail device by being inserted into the insertion portion of the operation lever. 2. The slide rail device according to claim 1, wherein when the operation lever is operated in a downward direction, the engagement with the cut and raised portion of the lever bracket is released and the operation lever can be rotated alone. 2. The slide rail device according to claim 1, wherein the operation lever can be detached by pushing up the bent portion of the lever spring with a tool or the like and pulling it out in the removing direction.

Images