JPH0567452B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for assembling a locking mechanism in a seat slide device that supports a seat in an installation location so as to be adjustable in its longitudinal position.

"Conventional technology" Conventional technology includes, for example, JP-A-62-
There is one disclosed in Publication No. 91335.

That is, the same publication describes a system in which an operating shaft is pivotally supported on a support bracket of a seat-side rail member, a front latch member is fixedly attached to this operating shaft, and a second latch is provided on the support bracket.
It is disclosed that the operating shaft is provided with an abutment member that presses the latch member against two bearings.

"Problems to be Solved by the Invention" The above-mentioned prior art was proposed by the applicant of the present application, and was convenient for assembling the latch member and the operating shaft without rattling. In addition to requiring an abutment member, the operation of pulling the operating shaft in one direction during assembly is complicated, and the challenge has been to develop a technique for assembling the latch member and the operating shaft more easily without rattling.

The present invention has been made in view of this conventional situation, and provides a locking mechanism that does not require extra products, can be easily assembled, and does not allow the latch member and operating shaft to become loose. The object of the present invention is to provide a method of assembling a locking mechanism in a seat slide device.

"Means for Solving the Problems" The gist of the present invention for achieving the above object is to fit a seat side rail member to a vehicle body side rail member provided with a locking portion so as to be able to slide back and forth. , a support bracket fixed to the seat-side rail member is provided with two curled portions, an operating shaft is inserted through both curled portions and pivotally supported, and the latch member selectively engaged with the locking portion is operated. A method of assembling a seat slide device fixedly attached to a shaft, the latch member being fixed to the operating shaft, and the operating shaft being rolled up so that the latch member is positioned between the two curled portions. and forming a pressing piece that presses the tip of the operating shaft by bending the end of the other curled part so that the end surface of the latch member comes into contact with the inner end of one of the two curled parts. A method of assembling a lock mechanism in a seat slide device is provided.

``Operation'' The latch member and the operating shaft are assembled as follows.

A latch member is fixed to the operating shaft in advance by welding, etc., the curled part of the support bracket is left unformed, and the pressing piece provided at the end of one of the curled parts is also left unfinished. .

The latch member fixed to the operating shaft is fitted to the support bracket so as to be positioned between the two unformed curled parts, and the operating shaft is rolled up to form both curled parts. As a result, the operating shaft is pivotally supported by both curled portions, and the latch member is positioned between the two curled portions and cannot be removed.

Next, the end of the two curled portions on the tip side of the operating shaft is bent to form a pressing piece, so that the pressing piece presses the tip of the operating shaft. Then, the end surface of the latch member comes into contact with and is pressed against the inner end of the curled portion on the proximal end side of the operating shaft, and this state is maintained after the machining of the pressing piece is completed.

Normally, the latch member is engaged with the locking portion of the vehicle body side rail member, and the seat side rail member is restrained so as not to slide relative to the vehicle body side rail member. Since the latch member and the operating shaft are supported to prevent rattling, the seat rail member is also restrained from rattling.

When the operating shaft is rotated and the latch member is released from the locking part of the vehicle body side rail member, the restraint of the seat side rail member is released, and the seat side rail member becomes able to slide with respect to the vehicle body side rail member. When the operating shaft is returned to the correct position and the latch member is engaged with the locking part,
As described above, the seat side rail member is restrained from sliding relative to the vehicle body side rail member.

"Embodiment" Hereinafter, an embodiment of the present invention will be described based on the drawings.

Each figure shows one embodiment of the invention.

As shown in FIG. 3, the seat slide device 10
The seat side rail member 3 is attached to the vehicle body side rail member 20.
0 is fitted so that it can slide back and forth, and a ball,
A roller is interposed.

A front support bracket 21 is fixed to the front end of the vehicle body side rail member 20, and a rear support bracket 22 is fixed to the rear end. Front support bracket 21 and rear support bracket 22
are fixed to the floor of the vehicle.

The vehicle body side rail member 20 has locking holes 26, 26.
A locking portion 25 in which ... are successively arranged along the longitudinal direction of the vehicle.
is provided.

A support bracket 40 is attached to the seat side rail member 30.
is fixedly installed, and the tip of the support bracket 40 has two
Two curled portions 41 and 45 are formed. An operating shaft 52 of the operating lever 50 is rotatably supported by both curled portions 41 and 45, and the operating shaft 52
A gripping portion 51 is provided at the base end of.

Further, a transmission lever 53 is fixed to the operation shaft 52 of the operation lever 50 by welding or the like for transmitting the rotation thereof to the adjustment mechanism of the other seat slide.

As shown in Figures 1 to 3, the operating lever 5
A base portion of a latch member 60 that selectively engages with the locking holes 26, 26, . The latch member 60 is attached to each inner end 4 of the curled portions 41 and 45 of the support bracket 40.
2 and 46.

At the tip of the latch member 60 there are locking holes 26, 26,
. . . are formed with engaging pawl portions 61 that can be selectively engaged and disengaged.

Two curls 41, 4 of support bracket 40
The operation shaft 52 fitted into the tip 5 is inserted through and pivoted to such an extent that it does not protrude from the curled portion 45 on the distal end side.

A pressing piece 47 for pressing the tip 54 of the operating shaft 52 is provided at the end of the curled portion 45 on the tip 54 side so that the end surface 62 of the latch member 60 comes into contact with the inner end 42 of the curled portion 41 .

A leaf spring 65 is provided with its base fixed to the support bracket 40, which pushes the back of the latch member 60 and biases the engaging claw portion 61 in the direction of fitting into the locking holes 26, 26, .

The above constitutes a lock mechanism.

The method of assembling the lock mechanism is as follows.

A latch member 60 is fixed to the operating shaft 52, and the operating shaft 52 is wound so that the latch member 60 is located between the two curled parts 41 and 45 to form both curled parts, and one of the two curled parts 41 and 45 is formed. curl part 4
A pressing piece 47 for pressing the tip 54 of the operating shaft 52 is formed by bending at the end of the other curled part 45 so that the end surface 62 of the latch member 60 comes into contact with the inner end 42 of the second curled part 45 .

Next, the action will be explained.

The latch member 60 and the operating shaft 52 are assembled as follows.

As shown in FIGS. 4a and 5a, a latch member 60 is fixed in advance to the operating shaft 52 by welding or the like, the curled portions 41 and 45 of the support bracket 40 are left unformed, and one The pressing piece 47 provided at the end of the curled portion 45 is also left unprocessed.

From the above state, as shown in FIGS. 4b and 5b, the support bracket 40 is moved so that the latch member 60 fixed to the operating shaft 52 is positioned between the two unformed curled portions 41 and 45. Accordingly, the operating shaft 52 is rolled up to form both curled portions 41 and 45.

As a result, the operating shaft 52 is
The latch member 60 is pivoted to the two curled portions 4.
It is located between 1 and 45 and cannot be removed.

Next, as shown in FIG. 5c, the end of the curled portion 45, which is the one on the tip 54 side of the operating shaft 52, is bent using tool A to form a pressing piece. 47 is molded so that the pressing piece 47 presses the tip 54 of the operating shaft 52.

Then, the end surface 62 of the latch member 60 comes into contact with and is pressed against the inner end 42 of the curled portion 41 on the proximal end side of the operating shaft 52, and this state is maintained even after the machining of the pressing piece 47 is completed. Ru.

In the seat slide device 10, when the seat is stopped, the engaging claw portion 61 of the latch member 60 is in the locking hole 26,
26, .

From this state, put your hand on the grip part 51 of the operating lever 50 and push the operating shaft 5 against the biasing force of the leaf spring 65.
When the latch member 2 is rotated, the latch member 60 is also rotated, and the engaging pawl portion 61 comes out of the locking hole 26, 26, .

Since the engaging claw portion 61 is disengaged from the locking holes 26, 26, .
Move the entire seat to the desired position.

When the desired position is determined, when the grip part 51 is released, the operating shaft 52 and the latch member 60 are returned to their original positions by the biasing force of the leaf spring 65, and the engaging pawl part 61 is inserted into the locking holes 26, 2.
6,..., thereby determining and fixing the seat position.

"Effects of the Invention" According to the method for assembling the lock mechanism in the seat slide device according to the present invention, one end of the latch member disposed between the two curled portions of the support bracket fixed to the seat side rail member is fixed to both curled portions. Since the pressing piece that maintains the pressed state against one inner end of the lever is molded on the curled part on the tip side of the operating shaft, the latch member and the operating shaft of the operating lever cannot be moved back and forth, and This eliminates rattling, thereby preventing rattling noise when starting or stopping, and eliminates the need for strict dimensional control regarding the gap between both ends of the latch member and each inner end of both curled parts. , manufacturing costs can be reduced.

[Brief explanation of the drawing]

Each figure shows one embodiment of the present invention, and FIG. 1 is a perspective view of the main part near the latch member of the seat slide device, FIG. 2 is a sectional view taken along the line of FIG. 1, and FIG. 3 is a seat FIG. 4 is a perspective view showing the entire slide device, FIG. 4 is an explanatory view of the assembly of the lock device, and FIG. 5 is an explanatory view showing how the curled portion is processed. DESCRIPTION OF SYMBOLS 10... Seat slide device, 20... Vehicle body side rail member, 25... Locking part, 26... Locking hole,
30... Seat side rail member, 40... Support bracket, 41, 45... Curled portion, 47... Pressing piece, 50... Operating lever, 52... Operating shaft, 60
...Latch member.

Claims (1)

[Scope of Claims] 1. A seat side rail member is slidably fitted back and forth to a vehicle body side rail member provided with a locking portion, and two curled portions are attached to a support bracket fixed to the seat side rail member. A method for assembling a seat slide device comprising: providing a seat slide device, inserting and pivotally supporting an operating shaft through both curled portions, and fixing a latch member selectively engaged with the locking portion to the operating shaft, the method comprising: Fix the latch member to the operating shaft, wrap the operating shaft so that the latch member is positioned between the two curled parts to form both curled parts, and attach the latch member to the inner end of one of the two curled parts. A method for assembling a lock mechanism in a seat slide device, characterized in that a pressing piece for pressing the tip of the operating shaft is formed by bending at the end of the other curled portion so that the end surface of the operating shaft comes into contact with the end surface of the operating shaft.