JPH0323871Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a seat track used in automobiles and the like, and more particularly to a seat track that moves a seat using rolling motion of rollers.

(Prior art) Conventional seat tracks of this type do not have sufficient peel strength against torsion about the longitudinal axis, so they must be placed in a position where a large torsional moment will not be applied due to the load from the seat cushion. It is set up. That is, they are arranged at regular intervals directly below the seat cushion frame.

(Problem to be solved by the invention) For rear seat occupants, the space below the seat cushion of the front seat is also a space in which they can insert their feet. However, with the above conventional seat tracks, there is a problem in that the distance between the seat tracks cannot be made large, resulting in a narrow leg space for the occupant in the rear seat.

This idea was created in view of the above problems.
The purpose is to provide a seat track that can increase leg space for rear seat occupants.

(Means for Solving the Problems) The present invention for solving the above problems has a roller holding part whose upper surface abuts the roller, and a concave upper arm part and a convex part above and below the roller holding part, respectively. A floor rail provided with a lower arm portion, and a roller holding portion that faces the roller holding portion of the floor rail and whose lower surface abuts the roller, and has a convex shape above and below the roller holding portion, respectively. A seat cushion rail is provided with a top arm portion and a concave lower arm portion, and the concave top arm portion of the floor rail and the convex top arm portion of the seat cushion rail are fitted through a sliding piece. , the convex lower arm portion of the floor rail and the concave lower arm portion of the seat cushion rail are connected to a cap attached to the convex lower arm portion of the floor rail, and a cap for the seat cushion so as to support the cap. It is characterized by fitting through a ball disposed in the concave lower arm portion of the rail.

(Function) In the seat track of the present invention, the upper arm portions and lower arm portions of the seat cushion rail and the floor rail are fitted together, and the torsional moment applied to the seat track is received by this fitted portion.

(Example) Hereinafter, an example of the present invention will be described in detail using FIGS. 1 to 3. A pair of seat tracks are used for one seat, but here we will explain an example of one that is used on the inner side of the driver's seat of a right-hand drive vehicle and is also equipped with a locking mechanism. Therefore, among these figures, in FIG. 1, the driver's seat is on the right side, and in FIGS. 2 and 3, the right side is the rear side.

In Figures 1 to 3, reference numeral 1 denotes a floor rail formed from a long plate, with a front end side surface (opposite seat side) and a rear end side surface (opposite seat side).
The mounting brackets 2 and 3 riveted to the floor are also fixed to the floor. This floor rail 1 has a roller holding portion 1 whose upper surface abuts against the roller 4.
a in the middle part. Moreover, the roller holding portion 1a
A concave upper arm portion 1b bent into a substantially inverted U-shape is provided on the upper side, and a convex lower arm portion 1c formed by folding is provided on the lower side.

Reference numeral 5 denotes a seat cushion rail formed by fixing plates C, D, and E, with a front end side surface (seat side) and a rear end side surface (seat side).
Mounting brackets 6, 7 with an L-shaped cross section welded to
However, it is fixed to the seat cushion frame. Rail 5 for this seat cushion
is a roller holding portion 5a whose lower surface is in contact with the roller 4;
in the middle part. Further, a convex upper arm portion 5b is provided above the roller holding portion 5a, and a substantially U-shaped concave lower arm portion 5c is provided below. The convex upper arm portion 5b of the seat cushion rail 5 fits into the concave upper arm portion 1b of the floor rail 1 via the sliding piece 8 attached thereto, and the concave upper arm portion 5b of the seat cushion rail 5 engages with the concave upper arm portion 1b of the floor rail 1. The portion 5c is connected to the ball 9 disposed within the concave lower arm portion 5c and a cap 20 having a substantially U-shaped cross section and attached to the convex lower arm portion 1c of the floor rail 1 using rivets 21. , convex lower arm portion 1c of floor rail 1
It is mated with. The balls 9 are arranged in pairs and are arranged opposite to each other at a plurality of points in the moving direction of the seat cushion rail 5 at intervals in the lateral direction in FIG. 1 by means of ball guides 11. The cap 20 is fitted between the pairs of balls 9 and is in contact with both balls 9.

Reference numeral 12 denotes a lock bar guided through a guide hole of the support bracket 13, which is fitted into lock holes 1e and 1f formed at regular intervals in the longitudinal direction of the concave upper arm portion 1b of the floor rail 1 to perform locking. . The seat cushion rail 5 is provided with through holes at necessary portions in order to ensure access to the lock holes 1e and 1f of the lock bar 12. A pin 14 is fitted into the hole in the middle of the lock bar 12, and the lock bar 1 is inserted between the pin 14 and the inner wall of the support bracket 13.
A compression spring 15 is provided that constantly urges the locking mechanism 2 in the locking direction. Also, pin 14
The lower end of is the elongated hole 1 on the bottom of the support bracket 13.
3a, and the support bracket 13 is attached to the penetrating portion with a pin 16 so as to be horizontally rotatable.
A rotating bracket 17 pivotally attached to the rotating bracket 17 is locked with some play in the lateral direction in FIG. 3, and an operating lever 18 is fixed to the rotating bracket 17. In addition, 19 is a nut for attaching the seat back frame which is welded to the seat cushion rail 5.

Next, the operation of the above embodiment will be explained.

First, when the operating lever 18 is released, the biasing force of the compression spring 15 causes the lock bar 12 to lock into the selected lock hole 1.
It is inserted into e and 1f. Therefore, the seat cushion is in a locked state, and movement of the seat cushion rail 5 is prevented.

On the other hand, when the operating lever 18 is rotated counterclockwise in FIG. 3, the lock bar 12 moves to the right in FIG. 1 and disengages from the lock holes 1e and 1f, releasing the locked state. Therefore, the seat cushion rail 5 can be moved laterally in FIGS. 2 and 3. When the desired adjustment position is obtained, when the operating lever 18 is released, the lock bar 12 is again urged in the locking direction by the action of the compression spring 15, and the nearby lock holes 1e and 1f are closed.
to be inserted into. Therefore, it returns to the locked state again.

According to the above configuration, the load in the vertical direction is mainly received by the roller 4, and the force (moment) due to torsion about the axis in the longitudinal direction (rail direction), that is, the torsion moment about the axis perpendicular to the plane of the paper in FIG. The lateral peeling force of the upper arm portions 1b, 5b
The respective fitting portions of the lower arm portions 1c and 5c are received. Therefore, the peel strength is high, and as in the above embodiment, the bracket 2 for mounting on the floor,
3 is provided on the side opposite to the seat, and brackets 6 and 7 for mounting the seat cushion frame are provided on the seat side, and even if the rail spacing is made large, the seat cushion rail 5 will separate from the floor rail 1. Never. Furthermore, the convex lower arm portion 1c of the floor rail 1 that comes into contact with the ball 9 needs to have a certain width, but in the above configuration, a cap is attached thereto, so it is unnecessary to use an unnecessarily thick plate as a raw material. There is no need to use plates. Furthermore, in this way, it is possible to select the most suitable material for the fitting portion.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications are possible. For example, it is not necessary to provide a locking mechanism for position adjustment.

(Effects of the invention) As explained above, according to the invention, the peel strength can be increased, so the rail spacing can be increased, and a seat track can be realized that can increase the leg space for rear seat occupants. .

[Brief explanation of the drawing]

FIG. 1 is an enlarged cross-sectional view of the main part taken along the - section line in FIG. 2, FIG. 2 is a front view of an embodiment of the present invention, and FIG. 3 is a plan view of the embodiment of FIG. 2. 1... Floor rail, 1a... Roller holding part, 1b... Concave upper arm part, 1c... Convex lower arm part, 1e, 1f... Lock hole, 2, 3
...Mounting bracket, 4...Roller, 5...Rail for seat cushion, 5a...Roller holding part, 5b...Convex upper arm part, 5c...Concave lower arm part, 6, 7...Mounting bracket , 8
...Sliding piece, 9 ... Ball, 11 ... Ball guide, 12 ... Lock bar, 13 ... Support bracket, 14 ... Pin, 15 ... Compression spring, 17 ... Rotating bracket, 1
8...operation lever, 20...cap.

Claims (1)

[Scope of utility model registration request] A floor rail having a roller holding part whose upper surface abuts the roller, and a concave upper arm part and a convex lower arm part provided above and below the roller holding part, respectively; and a roller holding part of the floor rail. a seat cushion rail having a roller holding part facing the roller and having a lower surface in contact with the roller, and a seat cushion rail having a convex upper arm part and a concave lower arm part provided above and below the roller holding part, respectively; The concave upper arm portion of the floor rail and the convex upper arm portion of the seat cushion rail fit together via a sliding piece, and the convex lower arm portion of the floor rail and the concave lower arm of the seat cushion rail fit together through a sliding piece. The cap is fitted through a cap attached to the convex lower arm portion of the floor rail and a ball disposed on the concave lower arm portion of the seat cushion rail to support the cap. Seat track.