JPH0428262Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a slide rail device for a vehicle seat.

[Conventional technology]

As a conventional slide rail device for a vehicle seat, the one shown in FIGS. 4 to 6, for example, is known (see Japanese Utility Model Publication No. 52-48510). Reference numeral 1 denotes a slide rail, which connects a pair of left and right movable rails 3, 3 fixed to the lower surface of the seat 2 to a pair of left and right fixed rails 5, 5 fixed to the vehicle body 4.
It is slidably engaged back and forth. and,
A plurality of lock holes (not shown) are provided along the longitudinal direction on the inner surface of the fixed rail 5. By engaging the lock pins 6 attached to the movable rails 3 with the lock holes, the movable rails 3 can be locked.
The position is fixed to the fixed rail 5. Each of the lock pins 6 is always urged by a spring 7 so as to protrude in the direction of engagement with the lock hole, and is connected via a control lever 8 with a wire 9 as a "connecting member".
By rotating this operating lever 8, the wire 9 pulls the lock pin 6 inward against the biasing force of the spring 7, and the lock pin 6 is disengaged, allowing the forward and backward position of the movable rail 3 to be adjusted freely. It's like that.

A cross member 10 rotatably supports the operating lever 8 and is installed between the movable rails 3 so as to cover the upper part of the wire 9. This cross member 10 has a flat plate shape as a whole, and is provided to protect the wire 9 from an unexpected load external force applied from the upper sheet 2 portion.

[Problem that the invention attempts to solve]

However, in such a conventional vehicle seat slide rail device, since the cross member 10 has a flat plate shape, although it is possible to achieve some degree of protection of the wires 9 from external load forces, it is difficult to protect the wires 9 from shocks caused by sudden braking or when driving. There is a risk of deformation due to external forces in the longitudinal direction applied from both the left and right sides due to violent vibrations inside, and it has been desired to improve its strength (that is, buckling strength).

In addition, since the cross member 10 is installed at a location corresponding to the seating position of the passenger 11,
When the occupant 11 is seated on the seat 2, there is a so-called "bottoming feeling" in which the buttocks 12 of the occupant 11 are slightly touching the cross member 10, which may impede the seating comfort of the seat 2 itself. It was hot.

This invention has been made with attention to such conventional technology, and is intended to provide a slide rail device for a vehicle seat in which the buckling strength of the cross member is strong and the seating comfort of the seat is improved.

[Means for solving problems]

In order to achieve the above-mentioned object, this invention forms a step-down part in the rear part of the cross member, which consists of a downward slope part and a downward flat part, and is lower than the upper surface of the movable rail. A connecting member is disposed below the front cross member.

[Effect]

Since the step-down portion is formed in the cross member, the cross member has a three-dimensional shape, and the strength of the cross member itself is improved accordingly, and the buckling strength in the longitudinal direction is also increased.

In addition, this step-down part extends from the rear part of the cross member, which is closer to the passenger's buttocks than the front part of the cross member.
Since it is formed to be lowered so as to avoid the occupant's buttocks, the feeling of bottoming out is eliminated.

〔Example〕

A preferred embodiment of this invention is shown below in Figures 1 to 3.
This will be explained based on the diagram. Note that explanations that are redundant with those of the prior art will be omitted.

An operating lever 22 is attached to the inside of the right movable rail 21 of the slide rail 20 along its longitudinal direction, and by rotating this operating lever 22, a lock pin (not shown) attached to the right movable rail 21 is released. At the same time, the left movable rail 23 on the other side is connected directly to the left movable rail 23 via a wire 25 as a "connecting member" attached to the tip of the rotating hook 24.
The lock pin (not shown) is engaged and released, and the movable rail 2
The front and rear positions of the rails 1 and 23 relative to the fixed rails 26 and 27 can be adjusted. Note that 28 is a seat cushion frame, and 29 is a reclining device.

30 is a cross member, and the wire 2
It is installed between both movable rails 21 and 23 so as to cover the upper part of 5. The portion of the cross member 30 that spans the right side movable rail 21 is raised slightly by the support portion 35 in order to avoid interference with the rotation hook 24 of the operation lever 22, and is placed on the upper surface of the right side movable rail 21. Fixed by welding. The left movable rail 23 is welded to the left movable rail 23.
is fixed directly to the top surface of the Between the two movable rails 21 and 23 of this cross member 25, the rear part thereof has a downwardly inclined part 31 and a downwardly flat part 3.
The step-down portion 33 is formed from 2. A wire 25 is disposed below the cross member 30 in front of the step-down portion 33.

By bending the cross member 30 so that it falls backwards in this way, the overall shape of the cross member 30 becomes three-dimensional, and the cross member 3
Since the overall strength of the wire 0 itself is improved accordingly, the wire 25 can be protected against the load external force applied from the sheet 34, and the wire 25 can be reliably protected.
Furthermore, even if a buckling load is applied in the longitudinal direction of the cross member 30 due to an external force applied to the slide rail 20, etc. of the seat 34 due to sudden braking or impact during a collision, the cross member 30 will not deform. Wire 25 in the same manner as above without
In addition, the slide rails 20 of the seat 34 can be reinforced, and deformation and damage to these mechanisms and structures can be prevented.

Further, since the rear portion, which is closer to the buttocks 12 of the occupant 11 than the front portion, is lowered to avoid the buttocks 12 of the occupant 11, the downwardly inclined portion 31 of the cross member 30 is closer to the buttocks 12 of the seated occupant 11. In addition to corresponding to the curved state, the rearmost part, which was the biggest cause of the feeling of bottoming out, is lowered and is placed in a position to avoid the buttocks 12 of the occupant 11 as a flat part 32, thereby eliminating the feeling of bottoming out, This improves the seating comfort of the seat 34.

In the above explanation, the "rearward descending shape" of the cross member 30 has been shown as a stepped descending section 33 consisting of a descending slope section 31 and a descending flat section 32, which is a shape in which a straight line has been changed. The shape is not limited to this, and the shape may be curved so as to fall backward.

〔effect〕

The slide rail device according to this invention has the content explained above, and the overall shape of the cross member is three-dimensional, and the overall strength of the cross member itself is improved accordingly, so that it can absorb the load from the seat. It is strong against external loads, and can reliably protect the connecting members.In addition, when sudden braking or impact occurs during a collision, external forces are applied to the seat slide rails, etc., and the longitudinal direction of the cross member is strengthened. Even if a buckling load is applied to the cross member, the cross member will not deform, ensuring the protection of the connecting members, reinforcing the seat slide rail, and preventing deformation or damage to the mechanism/structure. It has the effect of preventing

Additionally, the rear section, which is closer to the occupant's buttocks than the front section, has been lowered to avoid the occupant's buttocks, which eliminates the feeling of bottoming out for the occupants and improves seating comfort. There is also.

[Brief description of the drawings]

Fig. 1 is an overall schematic perspective view of a slide rail device for a vehicle seat showing an embodiment of this invention, Fig. 2 is a schematic enlarged perspective view of a cross member, and Fig. 3 is a diagram showing a state in which an occupant is seated on the seat. 4 is a schematic explanatory diagram showing a state in which an occupant is seated on a seat on a conventional slide rail device; FIG. 5 is a side view as seen from the direction of the arrow in FIG. 4; , FIG. 6 is a plan view seen from the direction of the arrow in FIG. 1, 20...Slide rail, 2, 34...Seat, 3...Movable rail, 4...Vehicle body, 5...Fixed rail, 8, 22...Operation lever, 9, 25...
... Wire (connection member), 21 ... Right movable rail,
23...Left movable rail, 26...Left fixed rail,
27... Right fixed rail, 10, 30... Cross member.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of left and right movable rails provided on the seat are slidably engaged in the front and rear direction with a pair of left and right fixed rails provided on the vehicle body, and both movable rails are connected by rotating an operating lever. A slide rail device for a vehicle seat in which a connecting member for simultaneously locking and releasing the movable rails is provided between both movable rails, and this connecting member is covered by a cross member having both ends fixed to the upper surface of both movable rails. A stepped portion is formed in the rear portion of the member, consisting of a downwardly sloped portion and a downwardly flat portion, and is lower than the upper surface of the movable rail, and the connecting member is disposed below the cross member in front of the stepped portion. A slide rail device for a vehicle seat, characterized in that: