JPH0311071Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seat adjuster for adjusting the longitudinal position of an automobile seat.

[Conventional technology]

As shown in FIG. 6, the above-mentioned seat adjuster is provided with a hinge bracket 3 that rotatably supports an operating lever 2 on an upper rail 1 fixed to the lower part of the seat bottom (not shown). A lock bracket 5 is provided on the lower rail 4 fixed to the side, and a locking claw (not shown) of a locking member 6 attached to the operating lever 2 is fitted into one of the engaging holes 7 formed in the lock plate 5. A device is known in which the upper rail 1 can be locked to the lower rail 4 at a desired longitudinal position by locking the upper rail 1 to the lower rail 4 at a desired longitudinal position. If the locking pawl is rotated in the reverse direction A in the figure against the urging force of It's becoming like that.

[Problem that the invention attempts to solve]

By the way, in the device shown in FIG. 6, a pin 9 that passes through the operating lever in a direction perpendicular to the axis is inserted into a hole 10 formed in the locking member 6, and the pin 9 allows the rotation between the operating lever 2 and the locking member 6 to be inserted. Although a stop is provided to prevent the operating lever 2 from slipping out from the hinge bracket 3, the provision of the pin 9 for preventing rotation and slipping out increases the number of parts and makes assembly of the seat adjuster complicated. There was a problem.

[Means for solving problems]

This invention was developed to solve the above problem, and includes an upper rail that is fixed to the seat bottom side and has a hinge bracket that rotatably supports the operating lever, and an upper rail that is fixed to the vehicle body and that can slide. a lower rail that is supported by the lock bracket and is provided with a lock bracket; a locking member that is fitted to the operating lever so that it cannot rotate relative to the operating lever; and a locking member that is provided on the lock bracket and that can be separated as the operating lever rotates. The slide lock mechanism includes an engaging portion that engages with the lever, and an engaging spring that has one end latched onto the operating lever and is wound around the operating lever to bias the operating lever in the engaging direction. In a seat adjuster in which the seat bottom can be moved back and forth by rotating the operating lever against the biasing force of the engagement spring and separating the locking member from the engagement portion, the engagement spring One end is adjacent to the front part of the engagement spring, and is fitted onto the operating lever and wrapped around the front side of the stopper plate that is fixed, and is latched to the front side of the plate, and the other end of the engagement spring It is characterized in that it is inserted from above into a latching hole drilled in the front end of the hinge bracket and latched to the lower surface side of the hinge bracket.

[Effect of idea]

According to the present invention, since the other end of the engagement spring is hooked to the hooking hole of the hinge bracket, the axial movement of the engagement spring with respect to the hinge bracket is restricted, and one end of the engagement spring is fixed to the stopper. Since it is latched onto the front side of the plate, the movement of the operating lever in the removal direction (toward the front of the vehicle body) relative to the engagement spring is restricted, and the engagement spring reliably prevents the operating lever from coming off from the upper rail. will be done.

Therefore, since the engagement spring can also be used as a retaining member for the operating lever, a retaining pin becomes unnecessary, the number of parts can be reduced, and the seat adjuster can be easily assembled.

〔Example〕

Examples of the present invention will be described below.

As shown in FIG. 4, the front seat 12 of an automobile includes a seat bottom 13 and a seat back 14.
and a headrest 15, and the seat back 14 is tiltably supported by the seat bottom 13 via a reclining mechanism 16.

A pair of left and right upper rails 17, 17 are fixed to the lower part of the seat bottom 13, while a pair of left and right lower rails 17 is fixed to the floor panel (not shown).
8 and 18 are fixed by mounting brackets 20 and 21 (see Fig. 5) provided at the front and rear ends, respectively.
Atsupa rail 17, 17 is lower rail 18, 18
It is supported so that it can slide forward and backward. A plurality of intermediate members 22 made of synthetic resin are interposed between each of the upper rails 17 and the lower rails 18. And one Atsupareru 1
A slide lock mechanism 23 is provided between the upper rails 17 and the lower rail 18, and the slide lock mechanism 23 allows the upper rails 17, 17 to be connected to the lower rail 18,
18 so that it can be locked in any desired longitudinal position.

The slide lock mechanism 23 has a hinge bracket 24 fixed to the upper part of the upper rail 17.
and a lock bracket 25 whose horizontal portion 25a (see FIG. 2) is L-shaped in cross section and whose horizontal portion 25a (see FIG. 2) is fixed to the lower part of the lower rail 18.
A hinge portion 24 having an arcuate cross section provided at the side end of the
A, 24a, . . . have an operating lever 26 rotatably supported.

The operating lever 26 has a pair of hinge parts 24.
A locking member 27 (FIG. 3) is fitted between a and 24a such that they cannot rotate relative to each other. That is, the locking member 2
The operating lever 2 has flat portions 28a, 28a on both sides of the pair of rising portions 27a, 27a on the front and rear sides of 7.
6 insertion hole 28 is bored, and flat parts 26a, 26a are formed on both sides of the part of the operating lever 26 where the locking member 27 is fitted. and the locking member 27 are prevented from rotating.

The locking member 27 includes locking pawls 27b that protrude inward at regular intervals in the longitudinal direction of the vehicle body.
27b, . . . are provided in the vertical portion 25b of the lock bracket 25, and a plurality of engagement holes 30, 30, 30, 30, 27b, . ...(locking claw 27b,
27b...more than one) are opened, and the locking claws 27
By fitting the upper rails 17, 27b, . . . into the desired engagement holes 30, 30, .

The operating lever 26 is indicated by arrow A.
The locking claws 27b, 27b, ... and the engagement hole 30 shown in
An engagement spring 31 (wire spring) is wound around the engagement spring 31 (wire spring) that urges the engagement spring 30, .
Adjacent to the front part of 1, the stopper plate 32 is fitted into and fixed to the operating lever 26, and is wrapped around the front side of the stopper plate 32 and is latched on the front side of the plate 32. Also, the other end 31b of the engagement spring 31
is inserted from above into a latching hole 33 (FIG. 1) formed in the front end of the hinge bracket 24, and is latched to the lower surface side of the hinge bracket 24.
As a result, the axial movement of the engagement spring 31 with respect to the hinge bracket 24 is restricted, and since one end 31a of the engagement spring 31 is latched to the front side of the latching plate 32, the operation of the engagement spring 31 is restricted. Movement of the lever 26 in the withdrawal direction (towards the front of the vehicle body) is restricted, and the engagement spring 31 reliably prevents the operation lever 26 from coming off from the upper rail 17. Note that a cylindrical handle 34 is attached to the inwardly bent front end of the operating lever 26 .

In the above configuration, the handle 34 is held and the operating lever 26 is pressed against the biasing force of the engagement spring 31.
When the slide lock mechanism 23 is rotated in the reverse A direction, the locking pawl 27b moves away from the engagement hole 30, as shown by the two-dot chain line in FIG. 2, and the slide lock mechanism 23 becomes unlocked. , 18, the front seat 12 can be moved back and forth. When the handle 34 is released, the operating lever 26 rotates in the direction A due to the elasticity of the engagement spring 31.
The locking pawl 27b fits into the engagement hole 30 and returns to the locked state. In the above embodiment, an intermediate member 22 made of synthetic resin was interposed between each upper rail 17 and lower rail 18, but instead of this, a change such as inserting a roller and a steel ball between the upper rail 17 and lower rail 18 could be made. can be done freely.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view taken along line - in FIG. 5 of an automobile seat adjuster according to an embodiment of the present invention;
2 is a cross-sectional view taken along the line - in FIG. 5, FIG. 3 is a perspective view of the operating lever and locking member in FIG. 5, and FIG. 4 is a front view of an automobile according to an embodiment of the present invention. A perspective view of the seat, FIG. 5 is a perspective view of the seat adjuster of the front seat in FIG. 4, and FIG.
The figure is a perspective view showing an example of a conventional seat adjuster. 13... Seat bottom, 17... Upper rail, 18... Lower rail, 23... Slide lock mechanism, 24... Hinge bracket, 25... Lock bracket, 26... Operation lever, 27...
Locking member, 30... Engagement hole (engaging portion), 31...
Engagement spring, 33...Latching hole (latching portion).

Claims (1)

[Scope of claim for utility model registration] The operating lever 2 is fixed to the seat bottom 13 side.
The upper rail 17 is provided with a hinge bracket 24 that rotatably supports the upper rail 17, and the lock bracket 24 is fixed to the vehicle body side and slidably supports the upper rail 17.
5, a locking member 27 that is fitted to the operating lever 26 in a relatively non-rotatable manner, and a locking member 27 that is provided on the lock bracket 25 and that rotates as the operating lever 26 rotates.
A slide consisting of an engaging portion 30 that engages in a separable manner, and an engagement spring 31 that has one end latched onto the operating lever 27 and is wound around the operating lever 27 to bias the operating lever 27 in the engaging direction. By rotating the operating lever 26 against the biasing force of the engagement spring 31 and separating the locking member 27 from the engagement portion 30, the seat bottom 1
In the seat adjuster that can move the operating lever 2 back and forth, one end 31a of the engagement spring 31 is adjacent to the front part of the engagement spring 31, and the operating lever 2
6, the other end 31b of the engagement spring 31 wraps around the front side of the stopper plate 32 and is latched on the front side of the plate 32.
A seat adjuster for an automobile, characterized in that the seat adjuster is inserted from above into a locking hole 33 formed in the front end of a hinge bracket 24 and is locked to the lower surface side of the hinge bracket 24.