JP2016107900A - Seat rail device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat rail device which disperses a force, which is concentrically applied to an attachment part of a seat bracket for attaching a vehicle seat to an upper rail, to a lower rail to prevent damage and deformation of the attachment part of the seat bracket beforehand.SOLUTION: The seat rail device includes: a lower rail 10 having a bottom surface part, side surface parts located at both sides, and upper surface parts extending from the side surface parts to the inner side; an upper rail 20 including an upper rail lower part disposed in the lower rail and an upper rail upper part extending upward from the upper rail lower part, the upper rail configured to slide in a fore and aft direction within the lower rail; and seat brackets for directly or indirectly attaching the vehicle seat to the upper rail. Bracket fixing pieces disposed on the lower surface side of the upper surface parts of the lower rail are provided in the seat brackets.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seat rail device.

  2. Description of the Related Art Conventionally, in a vehicle seat rail having an upper rail slidably provided on a lower rail, when a vehicle seat is attached to the upper rail, it is attached via a dedicated mounting bracket (Patent Document). 1). Such a dedicated bracket is generally made of a separate member and integrated with the upper rail by welding, rivets or the like. On the other hand, a large force may be applied to the upper rail in a direction in which the upper rail is peeled off from the lower rail by a driving operation such as a sharp curve or a sudden brake when the vehicle is traveling. At this time, since the lower rail and the upper rail are made to be strong, a very large force may be concentrated on the connection portion with the dedicated bracket attached to the upper rail.

JP-A-7-304359

  The present invention has been made in view of such a problem, and an object of the present invention is intensively applied to an attachment portion of the seat bracket for attaching the vehicle seat to the upper rail, for example, a welded portion, a rivet stop portion, and the like. An object of the present invention is to provide a seat rail device that can disperse the force to other parts and prevent damage or deformation of the mounting portion of the seat bracket.

  In order to achieve the above-mentioned object, the present invention employs the following means.

A seat rail device according to the present invention is a seat rail device for moving a vehicle seat back and forth,
A lower rail having at least a bottom surface portion, a side surface portion, and an upper surface portion extending inward from an upper end of the side surface portion;
An upper rail that is disposed inside the lower rail, and an upper rail upper portion that extends upward from the lower portion of the upper rail, and the upper rail that slides back and forth in the lower rail;
A seat bracket provided on the upper rail for attaching a vehicle seat directly or indirectly;
With
The seat bracket is provided with a bracket fixing piece disposed on a lower side of the upper surface portion of the lower rail.

  By adopting such a configuration, even when a large force is applied to the upper rail in the direction of peeling from the lower rail due to traveling of the vehicle or sudden braking, the load applied to the seat bracket is reduced. In addition to the mounting portion between the upper rail and the upper rail, it can be distributed to the lower rail via a bracket fixing piece. Therefore, it is possible to reduce the load applied to the attachment portion between the seat bracket and the upper rail, and it is possible to reduce the possibility that the attachment portions such as the welded portion and the rivet stop portion are damaged or bent.

  In the seat rail device according to the present invention, the bracket fixing piece may be provided on the rear side of the upper rail. In general, it is understood that the rear bracket is considerably larger than the front bracket due to various factors during sliding, such as when a vehicle seat is slid, sudden braking, etc. ing. Therefore, in order to disperse the force applied to the seat bracket more effectively, a bracket fixing piece is provided on the rear side of the vehicle seat.

  Further, in the seat rail device according to the present invention, the seat bracket is provided on both side surfaces of the upper rail upper portion, and the bracket fixing pieces extend so as to partially overlap the two seat brackets. It may be characterized by being provided. By superimposing the two bracket fixing pieces, the strength of the bracket fixing pieces can be increased, and the load can be more effectively transmitted to the lower rail.

  Further, in the seat rail device according to the present invention, the lower portion of the upper rail has an upper surface in the vicinity of the bracket fixing piece, and at least a part of the bracket fixing piece is disposed along the upper surface. It may be characterized by being. By adopting such a configuration, the load applied to the bracket fixing piece can be supported on the upper surface of the lower portion of the upper rail, so that the possibility that the bracket fixing piece itself and the upper rail are deformed can be reduced.

  According to the seat rail device according to the present invention, the force applied intensively to the attachment portion of the seat bracket for attaching the vehicle seat to the upper rail, for example, the welded portion, the rivet stop portion, etc., is distributed to the lower rail, Breakage and deformation of the bracket mounting portion can be prevented in advance.

FIG. 1 is a perspective view showing a seat rail device 100 according to the first embodiment. FIG. 2 is a perspective view showing the upper rail 20 of the seat rail device 100 according to the first embodiment. FIG. 3 is a perspective view showing the seat rail device 100 according to the second embodiment. FIG. 4 is a perspective view showing the upper rail 20 of the seat rail device 100 according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations. Moreover, the same or similar code | symbol is attached | subjected to the corresponding component in each figure. In the following claims and specification, “front and rear”, “left and right”, and “up and down” indicate directions of arrows in FIG.

  The seat rail device 100 according to the present embodiment supports a vehicle seat (not shown) so as to be slidable in the front-rear direction, and is used by being fixed to a vehicle floor (not shown). is there. As shown in FIG. 1, the seat rail device 100 according to the present embodiment mainly includes a lower rail 10 attached to the vehicle side, and an upper rail 20 attached directly or indirectly to the vehicle seat. Yes.

  The lower rail 10 is a long rail-like member. As shown in FIG. 1 or FIG. 2, the bottom surface portion 11 fixed to the vehicle floor and the left and right side surfaces respectively erected from both sides of the bottom surface portion 11. Parts 12, 12 and upper surface parts 13, 13 extending substantially horizontally from the left and right side parts 12 toward the center. A portion surrounded by the bottom surface portion 11, the side surface portion 12, and the top surface portion 13 constitutes a guide portion α of the upper rail 20, and a moving roller 27 of the upper rail 20 is disposed on the guide portion α, and the upper rail 20 is It can be moved back and forth.

  As shown in FIG. 2, the upper rail 20 includes an upper rail base member 21 and various components attached to the upper rail base member 21. The upper rail base member 21 has an upper rail lower portion 21a disposed in the lower rail 10 and a plate-like upper rail upper portion 21b extending upward from the upper rail lower portion 21a. As various components, a seat bracket mainly including a front bracket 24 and a rear bracket 25 for attaching a vehicle seat or a seat rail (not shown) for attaching a vehicle seat to the upper side, Roller 27 for preventing rattling of the upper rail 20 that is arranged on the guide portion α of the lower rail 10 and is urged toward the upper surface portion 13 side of the lower rail 10 and the moving roller 27 for moving in the front-rear direction. 28. There is a lock member 29 for preventing the vehicle seat from inadvertently moving when seated. Of course, various constituent members are not limited to these, and other constituent members may be provided as appropriate.

  The front bracket 24 is attached to the front side of the upper rail base member 21 with two rivets. The front side bracket 24 has a parallel surface along the side surface of the upper rail base member 21, and is attached to the upper rail base member 21 in close contact with the front side mounting flat portion 24 a and the front side mounting flat portion. The front seat mounting piece 24b is provided so as to be curved from 24a and extends in the lateral direction of the seat rail device 100. The front seat mounting piece 24b is provided with a front side mounting hole 24c for mounting the front side of the vehicle seat or the seat rail. The front seat mounting hole 24c is used to make a vehicle seat or the like. Is attached.

  The rear side bracket 25 is attached to the rear side of the upper rail base member 21 and to each of the left and right side surfaces with four rivets. The rear side bracket 25 has a parallel surface along the side surface of the upper rail base member 21, and is attached to the upper rail base member 21 in close contact with the rear side mounting flat portion 25a, and the rear side mounting flat portion. The rear seat mounting piece 25b is provided so as to be bent from 25a and extends in the lateral direction of the seat rail device 100. The rear seat mounting piece 25b is provided with a rear mounting hole 25c for mounting the front side of the vehicle seat or the seat rail. In general, the seat bracket is applied with a considerably larger force in the rear bracket 25 than in the front bracket 24 due to various factors during sliding such as a vehicle seat or sudden braking. I know. Therefore, in the present embodiment, compared to the front, a total of two seat brackets are attached to each side surface of the upper rail base member 21 one by one, and a relatively large number of four rivets are used, so that it is quite robust. It is fixed.

  Further, bracket fixing pieces 25d are provided below the left and right rear brackets 25. The bracket fixing piece 25d is formed to extend from the lower side of the rear bracket 25 in the laterally outward direction as shown in FIG. 2, and as shown in FIG. 1, the upper surface portion 13 of the lower rail 10 is formed. It is provided in the position arrange | positioned below. Preferably, the upper rail 20 is spaced from the lower surface of the upper surface portion 13 of the lower rail 10 by about 1 mm to 5 mm so that the upper rail 20 does not contact the lower rail 10 in a normal state. Thus, when the vehicle seat is moved in a normal state, the bracket fixing piece 25d does not contact the lower rail 10, and the movement is not hindered by friction or the like. The bracket fixing piece 25d is formed by molding a single plate member, but the present invention is not limited to this. For example, the bracket fixing piece 25d is manufactured using a thicker metal plate. This may be attached to the rear bracket 25 by welding, rivets or the like.

  Thus, by providing the bracket fixing piece 25d on the rear side bracket 25, a large force is applied in the direction of peeling the upper rail 20 from the lower rail 10 (in the direction of the arrow in FIG. 1) during operation or sudden braking or the like. Even in this case, the load applied to the rear bracket 25 can be distributed not only to the rivet fixing portion but also to the lower rail 10 via the bracket fixing piece 25d. It is possible to reduce the possibility that the rivet is broken or bent.

(Second Embodiment)
A seat rail device 100 according to a second embodiment is shown in FIG. The seat rail device 100 according to the second embodiment differs from the first embodiment in the form of bracket fixing pieces 25e, 25f. Since other configurations are the same as those in the first embodiment, description thereof is omitted.

  The bracket fixing pieces 25e and 25f according to the second embodiment are formed so as to extend rearward from the left and right rear brackets 25 as shown in FIG. One bracket fixing piece 25e is bent from the lower side of one rear side bracket 25 and extends rearward, and extends downward from the extended portion, and the end portion 21c of the upper rail lower portion 21a. It is formed so as to be bent along the shape. At this time, a part of the bracket fixing piece 25 e is provided at a position where it is disposed on the lower side of the upper surface portion 13 of the lower rail 10. Preferably, the lower rail 10 is spaced from the lower surface of the upper surface portion 13 by about 1 mm to 5 mm, and is arranged so that the upper rail 20 does not contact the lower rail 10 in a normal state. A part of the bracket fixing piece 25e is disposed along the upper surface 21d of the end 21c of the upper rail lower portion 21a. By adopting this configuration, even when a large downward force is applied to the bracket fixing piece 25e, the bracket fixing piece 25d is supported by the upper surface 21d of the end portion 21c of the upper rail lower portion 21a. It is possible to prevent deformation. The other bracket fixing piece 25e is bent from the lower side of the other rear bracket 25 and extends to the rear side, extends downward from the extended portion, and is attached to one bracket fixing piece 25d. It is formed to bend along.

  Thus, by providing the bracket fixing pieces 25e and 25f on the rear bracket 25, even when a large force is applied to the upper rail 20 in the direction of the arrow during operation or sudden braking, the rear side Since the load applied to the bracket 25 can be distributed not only to the rivet fixing portion but also to the lower rail 10 via the bracket fixing piece 25d, the load applied to the rivet can be reduced and the rivet is broken. Or the possibility of bending. Furthermore, in the second embodiment, since the bracket fixing pieces 25e and 25f are supported by the upper surface 21d of the end 21c of the upper rail lower part 21a, the deformation of the bracket fixing pieces 25e and 25f can be suppressed.

  The present invention is not limited to the above-described embodiments, and can be implemented in various modes as long as they belong to the technical scope of the present invention.

  In the present embodiment, the bracket fixing pieces 25d, 25e, and 25f are provided only on the rear bracket 25, but the present invention is not limited to this, and the bracket fixing pieces may be provided on the upper bracket.

  In the present embodiment, the seat bracket is divided into the front side and the rear side, but may be integrated.

  As shown in the above-described embodiment, the present invention can be industrially used as a seat rail device for attaching a vehicle seat.

DESCRIPTION OF SYMBOLS 10 ... Lower rail, 11 ... Bottom part, 12 ... Side part, 13 ... Top part,
20 ... Upper rail, 21 ... Upper rail base member,
21a ... Upper rail lower part, 21b ... Upper rail upper part, 21c ... End part,
21d ... Upper surface, 24 ... Front bracket, 24a ... Front mounting plane part,
24b: Front side seat mounting piece, 24c: Front side mounting hole,
25 ... rear side bracket, 25a ... flat part for rear side mounting,
25b ... Rear seat mounting piece, 25c ... Rear mounting hole,
25d ... Bracket fixing piece, 25e, 25f ... Bracket fixing piece,
27 ... Moving roller, 28 ... Preventing roller, 29 ... Lock member, 100 ... Seat rail device

Claims (4)

In the seat rail device for moving the vehicle seat back and forth,
A lower rail having at least a bottom surface portion, a side surface portion, and an upper surface portion extending inward from an upper end of the side surface portion;
An upper rail that is disposed inside the lower rail, and an upper rail upper portion that extends upward from the lower portion of the upper rail, and the upper rail that slides back and forth in the lower rail;
A seat bracket provided on the upper rail for attaching a vehicle seat directly or indirectly;
With
The seat rail device, wherein the seat bracket is provided with a bracket fixing piece disposed on a lower side of the upper surface portion of the lower rail.   The seat rail device according to claim 1, wherein the bracket fixing piece is provided on a rear side of the upper rail. The seat bracket is provided on both side surfaces of the upper rail upper part,
The seat rail device according to claim 1 or 2, wherein the bracket fixing pieces are extended so as to partially overlap the brackets for the seats on both sides. The lower part of the upper rail has an upper surface in the vicinity of the bracket fixing piece,
The seat rail device according to any one of claims 1 to 3, wherein at least a part of the bracket fixing piece is disposed along the upper surface.

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