JP3689495B2 - Slide rail with peeling prevention structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention a slide rail configured by the lower rail and the upper rail to adjust by moving the vehicle seat back and forth, Ri by the momentary impact load upper rail is subjected, the structure to prevent the peeling this upper rail from the lower rail It relates to the provided slide rail.
[0002]
[Prior art]
In conventional seat rails, the upper rail and the lower rail are wrapped and reinforced with a reinforcing member while the upper rail and the lower rail are slid together to prevent the upper rail from being separated from the lower rail due to impact load, or a part of the upper rail is reinforced. There is what I did.
[0003]
In addition, in the case where the seat belt is attached to the seat cushion, the belt anchor member is extended to the lower rail side to provide a hook-shaped locking portion, or the belt anchor portion is engaged with a part of the vehicle body, etc. A structure in which an impact load does not act on the upper rail was employed.
[0004]
[Problems to be solved by the invention]
In the case of reinforcing the upper rail of the conventional technique with another member for preventing the upper rail from peeling off from the lower rail, another member for reinforcing is necessary, and in addition, work such as welding, caulking, etc. is required for attaching the other member. Is necessary, cumbersome and costly.
[0005]
In addition, it is complicated to provide a locking portion in the belt anchor portion, and there are significant restrictions around the seat.
[0006]
[Means for Solving the Problems]
The present invention was devised in order to address this problem in view of the above circumstances, and a lower rail formed with a groove having a locking piece directed inward in the central longitudinal direction of the upper surface and formed into a concave cross section, and L In the slide rail in which an upper rail formed integrally with a back-to-back formed molding member provided with an upward locking piece at the tip of the bent piece is slidably fitted back and forth in the lower rail , The rear end portion has a mounting plane that is attached to the floor of the automobile, and a locking portion that is locked to the upper rail, and the vertical surface of the locking portion is loaded via the upper rail 4. A peeling prevention structure characterized in that a leg having a horizontal long hole that absorbs energy by being opened by an impact load and a notch groove extending from the edge toward the long hole is provided. Slide There is provided a Lumpur.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The figure shows the most preferred embodiment of the slide rail having the peeling preventing structure of the present invention, and will be specifically described below with reference to the drawings.
[0008]
Reference numeral 1 denotes a lower rail which has a locking piece 1a bent inward in the center longitudinal direction of the upper surface and is provided with a groove 1b and is formed in a rectangular cross section. 2 and 3 are attached .
[0009]
An upper rail 4 is slidably fitted to the lower rail 1 and can be moved back and forth. The upper rail 4 is bent horizontally in an L shape, and further, a bent locking piece 4b is bent by bending the tip of the bent piece 4a upward. The pair of molding members provided are back-to-back and molded integrally.
[0010]
Further, the upper rail 4 is provided with a hinge bracket 5 at a vertical portion of the forming member so that the sphere 7 held by the cage 6 in the lower rail 1 can be moved back and forth via a roll 8 on the lower side. It is slid and fitted.
[0011]
A bearing bracket 9 bent in a hook shape is attached to the side surface of the substantially central portion of the upper rail 4 in the longitudinal direction, and a claw with a constant pitch is provided between the left and right bearing portions 9a, 9a of the bearing bracket 9 at the tip. A locking member 10 provided with 10a is attached to a shaft 11 which is supported by being fitted into shaft holes 9b, 9b provided in the bearing portions 9a, 9a. Further, the locking member 10 is attached to the shaft 11 in the pressing direction. A spring 12 that is constantly biased is provided.
[0012]
The claw 10a at the tip end of the locking member 10 can be engaged with and disengaged from a locking hole 1c having a fixed pitch formed on the side surface of the lower rail 1 so that the claw 10a engages with the locking hole 1c. The movement of the rail 4 is restricted.
[0013]
It said rear of the leg 3 mounting the lower rail 1 to the floor, mounting surface 3b is attached to the rear end portion of the lower rail 1 by bolts 13, the mounting plane 3a and the engagement has been engaged with the upper rail 4 attached to the floor parts that have the a.
[0014]
The locking portion A includes a vertical surface 3d extending along the lower rail 1 from the mounting plane 3a to the upward inclined surface 3c, an upper surface 3e bent horizontally in an L shape from the vertical surface 3d, and vertically from the upper surface. It is formed by a bent locking piece 3f, and a horizontal long hole 3g is provided on the vertical surface 3d slightly apart from the end edge, and further, the narrow width of the end of the long hole 3g and the end edge is separated. The portion m is provided with a V-shaped notch groove 14 that can be easily torn in the horizontal direction, and when it receives an upward impact load on the upper rail 4, it tears from the notch groove 14 and absorbs energy.
[0015]
That is, when a momentary impact load is applied to the hinge bracket 5, a load is applied to the leg 3 via the upper rail 4, and the V-shaped notch 14 is instantaneously broken and opened as shown by a chain line in FIG. has been the upper rail is prevented from peeling from the lower rail.
[0016]
In the above-described embodiment, it is easily conceivable to provide a V-shaped or U-shaped notch in place of the V-shaped notched groove 14.
[0017]
【The invention's effect】
The present invention is a horizontal elongated hole in the leg of the lower rail of the slide rail, by providing a notch groove for facilitating tear edge side adjacent to the elongated hole, even when subjected to impact on the upper rail side, this The impact received by the upper rail is transmitted to the legs and split from the notch groove provided at the edge, so that this energy is absorbed , preventing the upper rail from peeling off from the lower rail without reinforcement as before There is an effect that can be done.
[Brief description of the drawings]
FIG. 1 is a side view of a slide rail provided with a peel preventing structure according to the present invention.
FIG. 2 is an enlarged rear view of FIG. 1 viewed from the right.
FIG. 3 is a side view of a rear leg.
4 is a plan view of FIG. 3. FIG.
FIG. 5 is a rear view of FIG. 3 as viewed from the right.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lower rail 1a, 3f, 4b Locking piece 1b Groove 1c Locking hole 2,3 Leg 3a Mounting surface 3c Slope 3d Vertical surface 3e Upper surface 3g Long hole 4 Upper rail 4a Bending piece 5 Hinge bracket 6 Cage 7 Sphere 8 Roll 9 Bearing bracket 9a Bearing portion 9b Shaft hole 10 Locking member 10a Claw 11 Shaft 12 Spring 13 Bolt 14 Notch groove A Locking portion

Claims (1)

Formed by providing a groove with a locking piece facing inward in the central longitudinal direction of the upper surface, bending the lower rail formed into a concave cross section, and bending it into an L shape, and providing an upward locking piece at the tip of this bent piece In the slide rail in which the upper rail formed integrally with the members back to back is slidably fitted back and forth in the lower rail , the rear end portion of the lower rail is
It has a mounting plane to be mounted on the floor of an automobile and a locking portion locked to the upper rail, and the vertical surface of the locking portion is opened by an impact load applied through the upper rail. A slide rail provided with an anti-separation structure, wherein a leg having a horizontal long hole and a notch groove extending from an end edge toward the long hole is attached .

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