JPH0645836U - Seat slide device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a seat slide device that moves and adjusts the seat back and forth, avoids concentration of load applied to the front side of the lower rail due to impact load, and prevents deformation or damage of the seat rail. To prevent. [Structure] An upper rail 6 which slides in a lower rail 5 having a substantially C-shaped cross section has a substantially inverted T-shaped cross section in which a pair of substantially L-shaped cross-sectional pieces are fixed back to back by welding or the like. The standing portions 6a, 6a, the horizontal portions 6b, 6b and the engaging portions 6c, 6c are formed. In addition, the upright portion 6 of the upper rail 6
A flange portion 10 that abuts the upper pieces 5c and 5c of the lower rail 5 is provided at the front ends of the a and 6a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat slide device that adjusts and moves a vehicle seat back and forth, and more particularly to a seat slide device that is not damaged even when an impact load is applied due to a sudden stop of the vehicle or a collision. .

[0002]

[Prior art]

 As a conventional technique, a utility model No. 4-20842 is generally used. In Japanese Utility Model Laid-Open No. 4-2 0842, a seat slide device is composed of a lower rail having a substantially C-shaped cross section and an upper rail having a substantially inverted T-shaped cross section, and the upper rail is provided with a rolling member such as a roller or a ball so that the upper rail extends longitudinally. It is fitted so that it can slide in any direction. A seat belt anchor is directly attached to the rear part of the upper rail.

[0003]

[Problems to be solved by the device]

 However, when the seat of the conventional seat slide device is moved rearward, the front roller, which is not associated with it, moves to the vicinity of the center. In this state, when the vehicle suddenly stops or collides, as shown in FIG. 4, for example, as shown in FIG. 4, a force F is applied to throw the occupant seated on the seat of the vehicle forward. This force F acts as a force that pushes up the rear portion of the upper rail via the seat belt anchor. However, since the upper rail is fitted to the lower rail, the force F is applied to the joint A between the lower rail and the foot, and a downward force P acts on the front side of the upper rail. Therefore, a very large force is applied to the point of action B of the force with the fulcrum A as the center, that is, one point where the front roller supporting the upper rail and the bottom piece of the lower rail come into contact with each other. In the case of the lower rail having the lock hole, there is a problem that the abutting portion between the front roller and the bottom piece of the lower rail is deformed or damaged.

[0004]

[Means for Solving the Problems]

 In order to eliminate the above-mentioned problems, the present invention comprises a bottom rail fixed to the floor side of a vehicle body, a bottom piece, side pieces extending upward from the bottom piece, and upper pieces extending inward from the side piece. The upper rail, which is formed of lower pieces extending downward from the upper piece and is slidable with respect to the lower rail via a rolling member, has a pair of L-shaped cross-section pieces placed back to back. It has a substantially inverted T-shape in cross section fixed to the upper rail and has a standing portion disposed between the lower pieces of the lower rail that face each other, a horizontal portion that extends outward from the lower end of the standing portion, and the horizontal portion. A seat slide device comprising an engaging portion extending upward from an end portion of the upper portion, wherein a flange portion is integrally provided at an upright portion of a front end of the upper rail with a proper interval with an upper piece of the lower rail. Characterized by To provide a door slide device. Further, the lower rail, the upper rail, and the flange portion provided on the upper rail may be formed of a light alloy.

[0005]

[Action]

 When a car suddenly stops or collides, the impact load applied to the front of the seat rail of the car seat firstly joins the abutting part of the front roller supporting the upper rail and the lower rail, and the lower rail starts to deform. Then, the gap between the flange at the front end of the upper rail and the upper piece of the lower rail disappears, and the flange and the upper piece of the lower rail come into contact with each other to receive the impact load applied to the front of the lower rail at two points. .

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, a seat slide device 1 includes a lower rail 5 having a substantially C-shaped cross section which is fixed to a floor 2 of a vehicle body through feet 3 and 4, and a substantially reverse cross section in which the lower rail 5 is fitted and slides. The upper rail 6 has a T-shaped upper rail 6, and an automobile seat including a seat back 7 and a seat cushion 8 is attached to the upper rail 6, and the upper rail 3 is adjusted and moved with respect to the lower rail 2 by an adjusting mechanism (not shown).

In FIG. 2, a lower rail 5 fixed to a floor of a vehicle body includes a bottom piece 5a extending in a longitudinal direction, side pieces 5b and 5b extending upward from an end of the bottom piece 5a, and an inner side from an upper end of the side piece. The upper pieces 5c and 5c respectively extend toward each other, and the lower pieces 5d and 5d extend downward from the upper piece. Further, one of the side pieces 5b, 5b of the lower rail 5 is provided with a plurality of lock holes 9 provided at equal intervals.

The upper rail 6 sliding in the lower rail 5 has a substantially inverted T-shaped cross section in which a pair of L-shaped cross-section pieces are back-to-back and fixed by welding or the like. The standing portions 6a, 6a arranged between the lower pieces 5d, 5d, the horizontal portions 6b, 6b extending outward from the lower end of the standing portion 6a and the ends of the horizontal portions 6b, 6b upward. It is formed of extending engaging portions 6c, 6c. Further, the front end of the upper rail 6 is disposed so as to be in contact with the lower end 10a of the flange portion 10 and the upper pieces 5c, 5c of the lower rail 5 at a proper distance from the upper piece of the lower rail 5. The flange portion 10 is formed at the time of press working, and does not need to be processed in a post process.

A roller 11 is provided between the bottom piece 5a of the lower rail 5 and the horizontal portions 6b, 6b of the upper rail 6, and engaging pieces 5d, 5d of the lower rail 5 and an engaging portion 6c of the upper rail 6 are provided. , 6c are provided with balls 12 to assist the sliding of the upper rail 6.

The present invention is not limited to the above-described embodiment, but is a seat rail in which a lower rail having a substantially C-shaped cross section and an upper rail made of two molding materials are combined as shown in FIGS. 5 and 6. Needless to say, it is possible to easily provide the flange portion.

Further, as shown in FIG. 7, it is conceivable to form the lower rail, the upper rail, and the flange portion provided at the front end of the upper rail with a light alloy.

[0012]

[Effect of device]

 As is apparent from the above, the present invention provides a lower rail fixed to the floor side of a vehicle body, a bottom piece, side pieces extending upward from the bottom piece, and upper pieces extending inward from the side pieces. The upper rail, which is formed of a piece and a lower piece that extends downward from the upper piece and is slidable with respect to the lower rail via a rolling member, is a pair of substantially L-shaped cross-section pieces. And a horizontal portion extending outward from a lower end of the upright portion, the upright portion being provided between the lower pieces of the lower rails and having a substantially inverted T-shape in cross section. A seat slide device comprising an engaging portion extending upward from an end portion of a horizontal portion, wherein a flange portion is integrally provided on an upright piece at a front end of the upper rail with a proper distance from an upper piece of the lower rail. It is characterized by The upper rail and the upper rail and the flanges provided on the upper rail are made of light alloy.When the car suddenly stops or collides, the impact load is received by the flanges of the roller and the upper rail, and the impact load is received. By avoiding concentration of the load at one point, extreme deformation or breakage of the seat rail can be prevented.

[0013]

[Brief description of drawings]

 Fig. 1 Perspective view showing the front part of the present invention Fig. 2 Side view showing the seat slide device of the present invention Fig. 3 Front view showing the seat slide device of the present invention Fig. 4 Principle diagram showing the action of impact load Fig. 5 of the present invention FIG. 6 is a diagram showing another embodiment. FIG. 6 is a diagram showing another embodiment of the present invention. FIG. 7 is a diagram showing another embodiment of the present invention.

[0014]

[Explanation of symbols]

1. Seat slide device 5. Lower rail 5a ... Bottom piece 5b. Side piece 5d. Lower piece 6 .. Upper rail 6
a. Standing part 6b. Horizontal part 6c. Engaging part 9. Lock hole 10. Flange part

Claims (2)

[Scope of utility model registration request] 1. A lower rail fixed to a floor side of a vehicle body comprises a bottom piece, side pieces extending upward from the bottom piece, upper pieces extending inward from the side pieces, and lower pieces extending from the upper piece. The upper rail, which is formed of a lower piece extending toward, and is slidable with respect to the lower rail via a rolling member, has a substantially inverted T-shaped cross section in which a pair of L-shaped cross-sectioned pieces are fixed back to back. An upright portion having a letter shape and disposed between the lower pieces of the lower rails facing each other, a horizontal portion extending outward from the lower end of the upright portion, and an upward extending from the end portion of the horizontal portion. A seat slide device comprising an engaging portion, wherein a flange portion is integrally provided on at least one of both ends in the longitudinal direction of the upright piece of the upper rail, with a proper distance from the upper piece of the lower rail. Sheets to be Ido apparatus. 2. The seat thruster according to claim 1, wherein the lower rail, the upper rail, and at least one of the longitudinal ends of the upper rail are formed of a light alloy.