JP3446699B2 - Seat slide device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide device, and more particularly, to an improvement in a lateral shake preventing structure of a positioning release lever provided for releasing the positioning of a seat.

[0002]

2. Description of the Related Art FIG. 4 is a side view of a main portion of a seat slide device having a positioning release lever. In the figure, the seat slide device is composed of a lower rail 1 fixed to the vehicle floor side and an upper rail 2 for mounting and supporting a vehicle seat. It is possible to move in a straight line.

A plurality of positioning holes 11 are formed in the side wall of the lower rail 1 at predetermined intervals in the longitudinal direction, while a positioning piece 3'is provided on the upper rail 2.
The tip claw portion 34 enters into the plurality of positioning holes 11 to position the upper rail 2, that is, the vehicle seat at a predetermined position.

FIG. 5 is a perspective view of a main part of the upper rail 2. The upper rail 2 is configured by joining two long plate members 217 and 218, and these long plate members 217 and 218 are provided in a vertical posture to form a main body standing wall 21 continuing in the longitudinal direction, and a lower edge 22 thereof. Is shaped like an inverted T and is located inside the lower rail 1, and a flange portion 23 that is bent at a substantially right angle is formed at the upper edge.

The positioning piece 3'has left and right side walls 35 and 36 formed at the upper end thereof rotatably mounted on a shaft 37, and both ends of the shaft 37 are supported by brackets 81 and 82. . The left and right brackets 81 and 82 are formed in an L shape, and the vertical wall thereof supports the shaft 37, and the horizontal wall is fixed to the surface of the main body standing wall 21 by rivets 83. In addition, the horizontal wall of the bracket 81 has a front end portion that extends a great distance along the main body standing wall 21 surface while forming a predetermined gap therebetween to form a restraining portion 811. A part of the upper end of the positioning piece 3 ′ extends into the opening 24 formed in the main body standing wall 21 and abuts the contact portion 38.
On the other hand, the lower end portion is bent horizontally, and the tip end thereof is separated into a trifurcated shape to form the claw portion 34. Positioning piece 3 '
The claw portion 34 is urged to rotate by a coil spring 39 arranged around the shaft body 37 in a direction of entering the positioning hole 11.

A guide piece 4'is disposed between the main body standing wall 21 of the upper rail 2 and the positioning piece 3 ', and the upper and left positions of the upper end of the guide piece 4'are formed on the lower surface of the horizontal wall of the brackets 81, 82. It is fastened together and fixed to the standing wall 21. The lower half of the guide piece 4'bends from the horizontal to the vertical downward along the upper rail 2, and at its lower end, three guide holes 44 having the same shape as the positioning holes 11 on the side wall of the lower rail 1 are formed at the same intervals. Each claw portion 34 of the piece 3 ′ has a guide hole 44.
After it has been inserted, it has entered the positioning hole 11 of the lower rail 1. Due to the presence of such guide pieces 4 ', even if a lateral force is applied in the state of entering the positioning hole 11, the claw portion 3
The deformation of 4 is prevented.

A positioning release lever (hereinafter, simply referred to as a release lever) 6'is provided along the main body standing wall 21. The release lever 6 ′ is a plate body having a flange portion 64 at the upper edge, extends in the longitudinal direction of the upper rail 2, and its center is rotatably coupled to the main body standing wall 21 by a pin 65 and has a base end portion 66. One end of an operating lever 7'which is bent in an L shape and extends from the front (left in FIGS. 4 and 5) is fixed. The tip portion 67 of the release lever 6'bends into the opening 24 of the main body standing wall 21 and is located directly above the contact portion 38 of the positioning piece 3 '. Therefore, the operating lever 7 '
Pull up (arrow in FIG. 5) to release the release lever 6'to the pin 65
When it is rotated clockwise in FIG. 4, the tip portion 67 moves downward to hit the abutting portion 38 of the positioning piece 3 ′ and rotate the positioning piece 3 ′ against the spring force of the coil spring 39. The pawl portion 34 is made to escape from the inside of the positioning hole 11.
As a result, the positioning state is released and the upper rail 2 can move with respect to the lower rail 1.

Here, an elongated rib projection 681 extending in the vertical direction is formed on the plate surface at the intermediate portion of the release lever 6 ', and at this portion, the intermediate portion projects downward and the regulating portion 6 is formed.
It is 8. The restricting portion 68 enters into the gap formed between the restraining portion 811 of the bracket 81 and the surface of the main body standing wall 21, and the top surface of the rib protrusion 681 has the restraining portion 81.
1 is in contact with the plate surface. When the release lever 6 ′ is rotated and its tip portion 67 is brought into contact with the abutting portion 38 of the positioning piece 3 ′, the reaction force exerts a lateral shake force on the release lever 6 ′, but the regulating portion 68. Since the rib protrusion 681 of the above contacts the plate surface of the restraining portion 811 of the bracket 81, lateral release of the release lever 6'is prevented.

[0009]

By the way, in the above-mentioned conventional seat slide device, the lateral deflection of the release lever 6'is prevented by the retaining portion 811 of the bracket 81 attached to the main body standing wall 21. Since the size of the gap formed with the surface of the standing wall 21 depends on the mounting accuracy of the bracket 81, there is a problem that the lateral blur prevention is not reliable.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a seat slide device capable of reliably preventing lateral displacement of a positioning release lever.

[0011]

In order to achieve the above object, according to the present invention, an upper rail (2) that moves along a lower rail (1) that supports a vehicle seat and is provided on the floor is attached to the upper rail (2). 2) to lower rail (1)
Positioning means (3) for positioning at a predetermined position above is provided, and the positioning release means for releasing and actuating the positioning means (3) by rotating along the main body standing wall (21) of the upper rail (2) and contacting the positioning means (3). In the seat slide device provided with the lever (6), the main body standing wall (2
1) is composed of two plates (211, 212),
The facing portion (21) where the two plates face each other with a predetermined gap (S) between them is part of these two plates (211, 212).
3, 214), and a part (63) of the positioning release lever (6) is positioned between the facing portions (213, 214) so that the positioning release lever (6) contacts the positioning means (3). Regulates the lateral blurring of.

According to the present invention, when the positioning release lever is brought into contact with the positioning means, a lateral shaking force acts on the positioning release lever, but a part of the lever is located between the facing portions forming a predetermined gap. As a result, the lateral movement of the positioning release lever is restricted by the opposing portions, and smooth operation is possible. Further, since the facing portion is formed on a part of the two plates, there arises a problem that the size of the gap in which a part of the positioning release lever is positioned depends on the mounting accuracy of the bracket as in the conventional case. Instead, it is possible to always realize a smooth operation of the release lever.

As a method of forming the facing portion, a method of cutting and raising a part of at least one of the two plates can be adopted.

The reference numerals in the parentheses indicate the correspondence with specific means described in the embodiments described later.

[0015]

1 is a side view of a main portion of a seat slide device. In the figure, the seat slide device is composed of a lower rail 1 fixed to the vehicle floor side and an upper rail 2 for mounting and supporting a vehicle seat. It is possible to move in a straight line. A plurality of positioning holes 11 are formed in the side wall of the lower rail 1 at predetermined intervals in the longitudinal direction, while the upper rail 2 has a positioning piece 3 formed therein.
Is provided, and its tip claw portion 31 has a plurality of positioning holes 1
The upper rail 2, that is, the vehicle seat is positioned at a predetermined position by entering the inside of 1.

FIG. 2 is a perspective view of a main part of the upper rail 2. The upper rail 2 is configured by joining two long plate members 211 and 212, and these long plate members 211 and 212 are provided in a vertical posture to form a main body standing wall 21 extending in the longitudinal direction, and a lower edge 22 thereof. Is shaped like an inverted T and is located inside the lower rail 1, and a flange portion 23 that is bent at a substantially right angle is formed at the upper edge.

The positioning piece 3 is fixed to the shaft body 32 at the left and right positions of the upper end portion, and the shaft body 32 has one end and an intermediate portion rotatably supported by bearing portions 41 and 42 of a guide piece 4 whose details will be described later. Has been done. The lower end portion of the positioning piece 3 is bent horizontally and the tip end thereof is separated into a trifurcated shape to form the claw portion 31. The guide piece 4 is formed of a plate material, and is bolted to the main body standing wall 21 at three places on the upper edge thereof.
The left and right ends are each formed into a substantially cylindrical shape, and
1, 42, and the shaft body 32 is inserted therethrough. Three guide holes 43 having the same shape as the positioning holes 11 (FIG. 1) on the side wall of the lower rail 1 are formed at the lower end of the guide piece 4 at the same intervals, and each claw portion 31 of the positioning piece 3 has a guide hole 43.
After it has been inserted, it has entered the positioning hole 11 of the lower rail 1. Due to the presence of the guide piece 4 as described above, even if the lateral force acts in the state where the guide piece 4 enters the positioning hole 11, the claw portion 31
Is prevented from being deformed.

A contact piece 5 is fitted and fixed to the outer periphery of the end of the shaft 32 protruding from the bearing portion 41. The claw portion 31 is positioned between the contact piece 5 and the bearing portion 41. A coil spring 3 for urging the shaft body 32 to rotate so as to enter the hole 11.
3 are provided. A part of the contact piece 5 fixed to the shaft 32 extends into the opening 24 formed in the main body standing wall 21 to form a contact portion 51.

A positioning release lever (hereinafter, simply referred to as a release lever) 6 is provided along the main body standing wall 21. The release lever 6 is formed by bending a plate body, and the upper half of the base end portion 61 thereof is rotatably coupled to a support column 25 erected on the main body standing wall 21 so that the upper rail 2 extends longitudinally in parallel with the standing wall 21. Extending in the direction. As shown in FIG. 1, the lower half of the base end portion 61 is substantially U having standing walls 611 and 612 on the left and right.
One end of the operation lever 7 which is formed in a letter shape and which is bent and extends from the front (left side in FIGS. 1 and 2) penetrates the standing walls 611 and 612 and is fixed thereto. A push portion 62 is formed at the tip of the release lever 6, and this push portion 62 is formed on the main body standing wall 2
1 is bent into the opening 24, and the contact portion 51 of the contact piece 5 is bent.
It is located directly above. In addition, the release lever 6 is a base end portion 6
The support bar 25 is provided by the torsion bar 64 attached to 1.
It is urged to rotate counterclockwise in FIG.

The rear edge of the opening 24 of the main body standing wall 21 (see FIGS. 1 and 2)
As shown in FIG. 3, the edge portion of the plate body 211 that constitutes the main body standing wall 21 is cut and raised to the front side (the lower side in FIG. 3) with a constant width to form one facing portion 213 at the right edge). The plate 212 is also cut and raised toward the front side so that its edge portion has substantially the same width as the facing portion 213 and forms a predetermined gap S with the facing portion 213 so as to be flush with the plate body 211. Is the facing portion 214 of the. Rib projections 215 and 216 are formed on the facing portions 213 and 214 so as to project in the facing directions, and the distance between the top surfaces of the rib projections 215 and 216 is substantially equal to the plate thickness of the release lever 6. The restricting portion 63, which is formed so as to extend to the extreme end of the release lever 6, is located between the rib protrusions 214 and 215 and is in contact therewith.

In such a structure, when the operation lever 7 is pulled up (arrow in FIG. 2) and the release lever 6 is rotated around the support column 25 in the clockwise direction in FIG. 1, the pushing portion 62 moves downward. When hitting the abutting portion 51 of the abutting piece 5, the positioning piece 3 is rotated against the spring force of the coil spring 33, and the claw portion 31 thereof is ejected from the positioning hole 11. As a result, the positioning state is released and the upper rail 2 can move with respect to the lower rail 1.

When the tip end portion 62 of the release lever 6 is applied to the contact portion 51 of the contact piece 5, a lateral shake force acts on the release lever 6 due to its reaction force. Is located between the facing portions 213 and 214 of the plates 211 and 212,
Both sides of the restricting portion 63 are rib protrusions 2 of the facing portions 213 and 214.
Since it is in contact with 15, 216, the release lever 6
Lateral blurring is prevented and smooth operation is possible. Further, in the present embodiment, since the facing portions 213 and 214 forming the gap S for positioning the restricting portion 63 at the tip of the lever are formed by cutting and raising the plate bodies 211 and 212 forming the main body standing wall 21, The facing distance between the facing portions 213 and 214, that is, the size of the gap S formed between the facing portions 213 and 214 can always be accurately maintained by press molding or the like, and thus the lateral shake of the release lever 6 is ensured. Can be prevented.

[0023]

As described above, according to the seat slide device of the present invention, it is possible to reliably prevent the lateral movement of the positioning release lever.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a seat slide device, showing an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the seat slide device showing the embodiment of the present invention.

FIG. 3 is a partial horizontal cross-sectional view of the seat slide device according to the embodiment of the present invention.

FIG. 4 is a side view of a main part of a seat slide device showing a conventional example.

FIG. 5 is a perspective view of a main part of a seat slide device showing a conventional example.

[Explanation of symbols]

1 ... lower rail, 2 ... upper rail, 21 ... main body standing wall,
211, 212 ... long plate, 213, 214 ... facing part, 3
... Positioning piece, 4 ... Guide piece, 5 ... Abutment piece, 6 ... Positioning release lever, 63 ... Restricting portion, 7 ... Operation lever.

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-8-295163 (JP, A) JP-A-8-11613 (JP, A) JP-A-4-215532 (JP, A) Actual Kaihei 2- 49628 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60N 2/00-2/54

Claims (2)

(57) [Claims] 1. An upper rail that supports a vehicle seat and moves along a lower rail provided on a floor is provided with positioning means for positioning the upper rail at a predetermined position on the lower rail, and along a main body standing wall of the upper rail. In a seat slide device provided with a positioning release lever for rotating and abutting the positioning means to release the positioning means, the main body standing wall is constituted by two plates, and a part of these two plates is The sheet plates form facing parts facing each other with a predetermined gap, and a part of the positioning release lever is positioned between the facing parts,
A seat slide device, wherein lateral displacement when the positioning release lever comes into contact with the positioning means is regulated. 2. The seat slide device according to claim 1, wherein at least one of the two plates is cut and raised to form the facing portion.