JPH0420690Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a vehicle seat slide device that is most suitable for automobiles and the like.

[Prior Art] Conventionally, a seat slide device that is located between a vehicle body and a seat and that allows the seat to move back and forth smoothly has a lower rail that is fixed to the vehicle body, and a seat slide device that is slidably assembled to the lower rail and attached to the seat side. It is equipped with a fixed upper rail.

To explain the upper rail and the lower rail in detail with reference to the drawings, as shown in FIG. 7, the lower rail 101 fixed to the vehicle body side is formed into a substantially U-shaped cross section with folded flanges 103 on both sides. In addition, Atsupa rail 1 fixed to the seat side
05 has a substantially inverted U-shaped cross section, and has horizontal bent portions 107 bent inward on both sides. The shape is such that it functions as a regulating member that prevents detachment by coming into contact with the folded flange 103 of.

[Problems to be solved by the invention] The lower rail 101 and the upper rail 10 described above
5 is assembled so that it can slide freely, and the upper rail 1
05 is the lower rail 10 by the horizontal bending part 107.
1, it has a shape that does not easily separate.

However, in a seat slide device with an anchor bracket in which a seat belt is connected to the upper rail 105, a large upward load is applied to the upper rail through the seat belt that restrains the occupant in the event of a collision. 52
As seen in Publication No. 88932, engagement recesses facing downward in the longitudinal direction are provided on both sides of the lower rail, while upward facing engagement recesses in the longitudinal direction are provided on both sides of the anchor bracket fixed to the upper rail to slidably engage with the engagement recesses. An engaging convex portion is provided. In addition, when a large upward load is applied to the upper rail, in addition to the regulating action of the horizontal bending portion, the engagement protrusion engages with the engagement recess to prevent separation of the upper rail and lower rail.

As described above, the engagement protrusion of the anchor bracket is engaged with the engagement recess to prevent disengagement, but the horizontal bent portion 1 of the upper rail 105
Since 07 is set to the dimension b specified for safety and security, in order to engage the engagement protrusion of the anchor bracket with the engagement recess 109 of the folding flange 103, the upper rail 10 is set as shown by the chain line in FIG.
It becomes necessary to widen the width of 5 and open the opening side of the engagement recess 109, which is closed by the horizontal bent portion 107, so that the engagement protrusion of the anchor bracket can be engaged therewith.

This causes problems such as the rail width becoming wider and increasing the size, and is also undesirable in terms of weight reduction. Moreover, the seat slide device is dedicated to the anchor bracket, and there is a possibility that it cannot be used in combination with a general seat slide device.

Therefore, the object of this invention is to provide a seat slide device with an anchor bracket that makes it possible to secure the same rail width as the conventional one.

[Means for Solving the Problems] In order to achieve the above object, this invention includes a lower rail that is fixed to the vehicle body side and has a substantially U-shaped cross section and continuous downward engaging recesses on both sides; In the seat slide device, the upper rail is attached to the lower rail and has a horizontal bent portion bent inward from both sides of the rail main body having a substantially inverted U-shaped cross section, and a slidable upper rail that is fixed to the seat side. Anchor brackets for connecting seat belts formed along the upper surface and both sides of the upper rail are fixed together, and cutouts formed at the horizontal bent portions, which are folded upward inwardly, are formed on both sides of the bracket main body of the anchor bracket. An engagement convex portion is provided that faces into the engagement recess through the engagement convex portion.

[Function] In this seat slide device, the seat can be moved back and forth by sliding the top rail back and forth.

Next, when a large input is applied to the anchor bracket through the seat belt that restrains the occupant in a collision, etc., the horizontal bent part of the upper rail interferes with the engagement recess, and the engagement protrusion of the anchor bracket interferes with the engagement recess. Disengagement is prevented. In this case, since the engaging convex portion fits within the notch of the horizontal bent portion, the engagement between the engaging convex portion and the engaging concave portion is ensured without increasing the rail width of the upper rail.

[Embodiment] Hereinafter, an embodiment of this invention will be described in detail with reference to the drawings of FIGS. 1 to 6.

1 in the figure is the lower rail of the seat slide device 3;
Reference numeral 5 indicates upper rails, and the lower rail 1 is fixed to the vehicle body P (floor panel) side through brackets 7, 7, and the upper rail 5 is fixed to the seat 9 side.

The lower rail 1 is formed to have a substantially U-shaped cross section, and on both sides 11, 11, a horizontal part 13 that is bent briefly outward and a vertical part 15 that is shortly bent downward from the horizontal part 13 are engaged. Recesses 17, 17 are formed along the longitudinal direction.

The upper rail 5 has vertical parts 21, 21 vertically extending downward from the upper surface 19, and has a substantially inverted U-shape in cross section. is bent, and the horizontal bent portion 23 is set to a prescribed dimension b.

Further, an anchor bracket 25 is attached to the upper rail 5. Anchor bracket 2
A mounting fitting 31 for the seat belt 29 is fixed to the mounting portion 27 of the seat belt 5 with a bolt 33 and a nut 35.

The anchor bracket 25 is formed of two plates, and the mounting portion 27 to which the mounting bracket 31 of the seat belt 29 is fixed has an overlapping structure, and the bracket main body 37 assembled to the upper rail 5 is in contact with the upper rail 5. They are separated one by one in different directions from the point, one side is bent along the upper surface 19, vertical part 21 and horizontal bent part 23 of the upper rail 5, and the other is bent along the vertical part 21 and horizontal bent part 23 of the upper rail 5. Furthermore, engagement protrusions 39, 39 are provided which both rise briefly upward and face into the engagement recess 17 of the lower rail 1.

The area of the engagement protrusion 39 is a notch 4 cut out corresponding to the length L of the engagement protrusion 39, as shown in FIG.
1.

On the other hand, a reinforcing member 43 is provided on the upper surface side of the lower rail 1.
are strung across and fixed by welding. The reinforcing member 43 is the anchor bracket 2 which is subjected to a large load.
5, and the bent portions 45, 45 of the member 43 face the inside of the lower rail 1, so that when an upward force is applied to the lower rail 1, both sides of the lower rail 1 move inward as shown by chain lines in FIG. It has the function of regulating the deformation into

Note that 47, 47 are sliding members provided on both sides of the lower rail 1, made of a material such as synthetic resin, and in contact with the inner wall surface of the upper rail 5. This allows the upper rail 5 to slide without wobbling.

In the seat slide device configured in this way, the seat 9 is moved by sliding the top rail 5.
It is possible to move back and forth.

Next, at the time of a collision, the occupant should wear a seatbelt 29
However, at this time, an upward load acts on the upper rail 5 via the seat belt 29.
Under this upward load, the horizontal bent portion 23 comes into contact with the lower end of the engaging recess 17, while the engaging convex portion 39
engages with the engagement recess 17, thereby preventing the upper rail 5 and lower rail 1 from coming apart.
At this time, a force acts on both sides 11, 11 of the lower rail 1 to deform it inward, but this force is received by the reinforcing member 43 and the deformation is suppressed.

[Effects of the invention] As explained above, according to the seat slide device of this invention, the engagement protrusion of the anchor bracket engages with the engagement recess through the notch of the upper rail, so there is no need to increase the rail width. You will also be able to do it. Therefore, it does not become large.

In addition, by removing the anchor bracket, it can be used as a seat slide device like before, so the number of parts can be reduced.
It is possible to streamline production and reduce parts management man-hours.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the seat slide device of this invention, Fig. 2 is a sectional view taken along the - line in Fig. 5, Fig. 3 is a sectional view of the main part, Fig. 4 is a side view of the seat,
FIG. 5 is an enlarged side view of the anchor bracket mounting portion, FIG. 6 is a sectional view taken along the line -- in FIG. 5, and FIG. 7 is a sectional view of an upper rail and a lower rail showing a conventional example. Explanation of main drawing symbols, 1...lower rail, 5
...Top rail, 9... Seat, 17... Engagement recess, 23... Horizontal bending part, 25... Anchor bracket, 39... Engagement convex part, 41... Notch,
P...Car body.

Claims (1)

[Scope of utility model registration request] The lower rail is fixed to the vehicle body and has a substantially U-shaped cross section and has continuous downward engagement recesses on both sides, and has a horizontal bent part that is assembled to the lower rail and bent inward from both sides of the rail body that has a substantially inverted U-shaped cross section. In a seat slide device, the seat slide device includes a slideable upper rail fixed to the seat side.
Anchor brackets for connecting seat belts formed along the upper surface and both sides of the upper rail are integrally fixed to the upper rail, and the anchor brackets are folded upwardly inward and formed at the horizontal bent portions on both sides of the bracket main body of the anchor bracket. A seat slide device for a vehicle, characterized in that an engagement convex portion is provided that faces into the engagement recess through a cutout portion.