JPS637543Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seat adjuster for automobiles.

An automobile seat adjuster is a device for freely adjusting the position of an automobile seat in the longitudinal direction. In order to perform these functions, the automobile seat adjuster must be equipped with means for supporting the seat and guiding it back and forth, and means for locking the seat from sliding in the back and forth direction.

The seat support/guiding means of an automobile seat adjuster generally includes a lower rail fixed to the vehicle body that slidably supports an upper rail to which the seat is fixed via a rolling member such as a roller or a sliding surface. It is desirable that such a support/guide means be lightweight, strong, and slide smoothly, and furthermore, it is desirable that the width be narrow in order to utilize the space below the seat.

The means for locking the slide of the above-mentioned support/guiding means generally consists of a stationary locking member having locking holes or locking depressions arranged in rows on either the lower rail, which is a fixed member, or the upper rail, which is a sliding member. At the same time, a movable lock member that can be freely engaged and detached from the stationary lock member is provided on the other of the lower rail and the upper rail. It is desired that such a locking means is easy to lock and release, and that the locking function is reliable. However, in conventional locking means, the tip of a movable locking member that can freely rotate or slide engages with a stationary locking member.
Locking tends to be loose, and there is also a risk that the movable lock member may be deformed or damaged by bending force, resulting in insufficient durability.

This invention was created in view of the above circumstances, and is lightweight.
To provide a seat adjuster for an automobile that is strong, slides smoothly, is securely locked, and has no risk of deformation or damage.

In order to achieve the above object, the present invention makes the parallel opposite sides of two rail members each having a U-shaped cross section horizontal and fixing them back to back to form a top rail, and one side of the rail member having an L-shaped cross section is made horizontal. The two U-shaped rail members constitute the upper rail by being held horizontally and fixed to the floor of the automobile to constitute a lower rail, and the upper rail is slidably supported via rolling elements on the horizontal surface of the lower rail. The upper side of one of the rail materials is folded upward and extended, and the upper edge of the vertical side of the lower rail is folded back into a U-shape to hold the above extension, and the two rails are folded upward. The upper side of the other U-shaped rail material is extended in an upwardly folded shape and further horizontally bent to form a seat support part, and the vertical part of the lower rail is extended. A plurality of lock holes are arranged in a longitudinal direction on each side, and a portion of the one rail material facing the lower rail is bulged in a direction approaching the lower rail, and this bulge corresponds to the lock hole. A locking hole is provided, and a locking member that can fit into the locking hole is separately formed and rotatably supported on the seat support portion, and the locking member detachably locks the lower rail. It is characterized in that it is constructed so that it can penetrate through the hole and engage with the lock hole of the upper rail.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

FIG. 1 is an end view of the rail portion of the seat adjuster viewed in the longitudinal direction, and FIG. 2 is an exploded perspective view with a portion thereof cut away. 1 is an upper rail to which a seat (not shown) is fixed, and 2 is a lower rail.
A lower frame 3 is fixed to the floor of an automobile, and a lower rail 2 is fixed to the upper surface of the lower frame 3 and supported horizontally. 4 is a roller that supports the upper rail 1 in a slidable manner.

The above-mentioned Atsupara rail 1 is constructed by fixing two rail materials 5 and 6 with a U-shaped cross section back to back,
In addition, the edge of the upper side 5a of the rail material 5 is extended in an upwardly folded shape, and the folded edge is further extended in a horizontally bent shape to form a seat support portion 5b. .

The edge of the upper side 6a of the rail material 6 is folded upward to form a vertical side 6b, and the upper edge of the vertical side 2a of the lower rail 2 is folded back into a U-shape to form the vertical side 6b. gently hold the side 6b. Reference numeral 7 denotes a synthetic resin slider interposed in the above-mentioned holding portion.

With the above configuration, the upper rail 1 has rollers 4
The upper rail 1 is slidably supported by the lower rail 2 via the slider 7, and the upper rail 1 is held by the lower rail 2 via the slider 7 and guided so that both remain parallel.

The above-mentioned support and guide means is a two-railed
Since it has a vertical plate-like portion made of laminated sheets, it is strong against bending even though it is constructed lightly, and since the underside rail 1 is supported via the rollers 4, it slides smoothly, and the width W of this support guide means is narrow, being slightly larger than the width w of the rollers 4. Therefore, when a sheet is placed on the underside rail 1, the space below the sheet is wide.

In order to freely lock and release the upper rail 1 that is slidably supported as described above, a locking means is constructed as follows.

On the vertical side 2a of the lower rail 2 having an L-shaped cross section,
A large number of lock holes 8 are drilled at equal pitches in the longitudinal direction (that is, horizontal direction) of the rail. Figure 3 shows its front view.

The portion of the rail material 6 that constitutes the upper rail 1 facing the vertical side 2a of the lower rail is
bulges out so as to approach the vertical side 2a,
A lock hole 9 corresponding to the lock hole 8 described above is bored in this bulge. In this embodiment, three lock holes 9 are bored at the same pitch as the lock holes 8 described above.

As shown in FIG. 4, a lock plate 10 having claws 10a which can be engaged with the three lock holes 9 is formed. A lever shaft 11 is supported on the lower surface of the seat support portion 5b of the upper rail 1 for manual rotation, and the lock plate 10 is attached to the lever shaft 11.
sticks to. As a result, as the lever shaft 11 is rotated, the pawl 10a of the lock plate 10 passes through the lock hole 8 and engages with the lock hole 9, or is removed from the lock holes 8,9. 12 is a handle of the lever shaft, and 13 is a bearing of the lever shaft fixed to the seat support portion 5b. coil spring 14
is interposed between the lever shaft 11 and the seat support portion 5b to apply rotational force to the lever shaft 11, and when no separate operating force is applied, the claw 10 of the lock plate 10
A is configured so that it can be rotated in the direction in which it engages with the lock holes 8 and 9.

As can be easily understood from FIG. 1, when the lock plate 10 rotates clockwise around the lever shaft 11, the pawl 10a is easily removed from the lock holes 9 and 8, and the upper rail 1 is no longer locked. Unraveled. Further, when the pawl 10 passes through the lock hole 8 and engages with the lock hole 9 by rotating counterclockwise, the upper rail 1 is locked from sliding.

In the locked state shown in this figure, the free end side of the lock plate 10 is connected to the lock hole 9 of the upper rail 1.
The base end side is fixed to the lever shaft 11,
It is supported at both ends. The intermediate portions of the support portions at both ends are inserted into the lock hole 8 to achieve a locking effect. Therefore, the arm of the bending moment applied to the lock plate 10 is short, and there is no risk of deforming or damaging the claw 10a of the lock plate 10.

In addition, as in this embodiment, the lock plate 10
Three claws 10a are formed at the tip of the
When the pitch of each pawl 10a, the pitch of the lock hole 9 of the upper rail 1, and the pitch of the lock hole 8 of the lower rail 2 are combined, the contact area of the entire lock plate 10 is the contact area of one pawl. Since the force applied to the edge of each lock hole 8 or 9 is reduced to 1/3, there is no risk of cracking or sagging, and the locking of the upper rail 1 can be done at a fine pitch (i.e. Approximately 1/3 of the width of lock plate 10
It can be done in the pitch of

As described in detail above, by applying the present invention, it is possible to create a lightweight, durable automobile that slides smoothly, can be locked securely, and has excellent durability without the risk of deformation or cracking. This produces an excellent practical effect of being able to constitute a seat adjuster.

[Brief explanation of the drawing]

1 to 4 show an embodiment of an automobile seat adjuster according to the present invention, in which FIG. 1 is an end view, FIG. 2 is an exploded perspective view, FIG. 3 is a front view, and FIG.
The figure is a perspective view of the lock plate. 1...Atsupa rail, 2...Lower rail, 2a
... Same perpendicular side, 3 ... Lower frame, 4 ... Roller, 5, 6 ... U-shaped rail material, 5a, 6a
...Same upper side, 5b...Seat support part, 6b...
...Vertical side, 7...Slider, 8, 9...Lock hole, 10...Lock plate, 10a...Same pawl,
11...Lever shaft, 12...Handle, 13...
Bearing, 14...Coil spring.

Claims (1)

[Scope of utility model registration request] The parallel opposite sides of two rails each having a U-shaped cross section are made horizontal and fixed back to back to form an atsupara rail, and one side of the rail material having an L-shaped cross section is made horizontal and fixed to the floor of a car to form a lower rail. The upper rail is slidably supported on the horizontal side of the lower rail via rolling elements, and the upper side of one of the two U-shaped rail members forming the upper rail. The upper edge of the vertical side of the lower rail is folded back into a U-shape to hold the extension, and the other of the two U-shaped rail materials is folded upward. The upper side of the rail material is extended in an upwardly folded shape and further horizontally bent to form a seat support, and a plurality of locks are provided on the vertical sides of the lower rail in the longitudinal direction. The holes are arranged in a row, and a portion of the one rail material that faces the vertical side of the lower rail bulges in a direction approaching the vertical side of the lower rail, and a lock hole corresponding to the lock hole is provided in the bulged portion. A locking member that can be fitted into the locking hole is formed separately from the above and rotatably supported on the seat supporting portion, and the locking member removably passes through the locking hole of the lower rail. A seat adjuster for an automobile, characterized in that it is configured to fit into a lock hole of an upper rail.