JPS6328663Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for adjusting the position of a seat in an automobile or the like in the longitudinal direction.

The outline of this type of device is as shown in FIGS. 1 and 2, in which an upper rail 4 fixed to the lower surface of a seat 3 is moved along a lower rail 2 fixed to a car body 1 of an automobile. It is configured as follows. The upper rail 4 is then fixed when the seat moves to a desired position.

The mechanism for fixing the upper rail at the desired position is conventionally the third type.
It is constructed as shown in FIG. That is, an engaged member 10 is attached to the lower rail 2, and engagement recesses 11 are formed in the engaged member 10 at predetermined intervals along the axial direction. On the other hand, a first support member 12 and a second support member 13 are attached to the side surface of the upper rail 4 at a distance from each other. 4 is rotatably supported along the longitudinal direction. The first support member 12 has two supporting pieces 15a and 15b facing each other, and the operating rod 14 is inserted into insertion holes formed in these supporting pieces 15a and 15b to support it. It's summery. The second support member 13 is composed of a metal plate 16 and a resin insertion member 17 attached to the tip of the plate 16. This insertion member 17 has an insertion portion 17a shaped like a cylindrical lower part cut out, and the operating rod 14 is inserted into this insertion portion 17a to support it. Incidentally, the generation of rattling and chatter noises due to the vibration of the operating rod 14 is prevented by the elastic force of the insert member 17 made of resin. Further, an engaging member 18 is attached to the operating rod 14 between the support pieces 15a and 15b of the first supporting member 12, and this engaging member 18 engages with the engaging recess 11. It has a claw (not shown) to be fitted. And the above operation lever 1
4 is a torsion bar 19 that engages the engaging member 1;
The claws 8 are biased to rotate in the direction of engagement with the engagement recesses 11. This torsion bar 19 has one end fixed to the operating rod 14 and the other end fixed to the first support member 12.

The above conventional device is assembled as follows. First, the second support member 13 is fixed to the upper rail 4. On the other hand, the end of the operating rod 14 is inserted into the first support member 12, and then the locking member 18 is inserted into the operating rod 1.
4, one end of the torsion bar 19 is fixed to the operating rod 14, and the other end is fixed to the first support member 12. After the operating rod 14, the first support member 12, the locking member 18, and the torsion bar 19 are made into a unit in this way, the middle part of the operating rod 14 is moved upward in advance in a direction perpendicular to its axial direction, that is, from below. It is inserted into the insertion portion 17a of the second support member 13 fixed to the rail 4, and then the first support member 12 is fixed to the upper rail 4.

In the above conventional device, the second support member 13 will be described in more detail.
3 must be constructed so as to satisfy two points: that the operating rod 14 is inserted and supported from a direction perpendicular to the axial direction thereof, and that the inserted operating rod 14 is supported. For this reason, the conventional second support member 13 consists of the plate material 16 and the resin insert member 17 as described above, and the operating rod 1 is inserted from below.
4 is press-fitted by elastically deforming the insertion portion 17a, and in this inserted state, the operating rod 14 is locked by a protrusion 17b formed at a position close to the insertion portion 17a.

However, in the case of such a conventional second support member 13, the plate material 16 and the insertion member 17
Since two members are required, there are drawbacks such as a large number of parts and a time-consuming process for assembling these parts.

The present invention was developed based on the above-mentioned circumstances, and its purpose is to provide a seat longitudinal position adjustment device in which the second support member is composed of a single member, and which can also reliably support the operating rod. It is about providing.

In order to achieve the above object, in the longitudinal position adjustment device of the present invention, the second support member includes a semi-cylindrical insertion portion for inserting and supporting the operating rod from a direction substantially perpendicular to the axial direction thereof; one end of the torsion bar is fixed to the operating rod, and the other end of the torsion bar is hook-shaped and inserted into the notch of the second support member. The other end of the torsion bar prevents the operating rod inserted into the insertion portion of the second support member from coming off.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 5 to 7. Reference numeral 2 in the figure indicates a lower rail, and this lower rail 2 is fixed to the body of the automobile by support fittings 21 (only one of which is shown in FIG. 7) fixed to both ends thereof. As shown in FIG. 7, a large number of engagement recesses 22 are formed on one side of the lower rail 2 at predetermined intervals along the axial direction. On the other hand, an upper rail 4 attached to the lower surface of the seat is adapted to fit into the lower rail 2 and travel in the front-rear direction. A first support member 23 and a second support member 24 are fixed to one side of the upper rail 4, and the operating rod 25 can freely rotate along the longitudinal direction of the upper rail 4 by means of these support members 23 and 24. is supported by The first support member 23 has two supporting pieces 26a and 26b that extend in a direction perpendicular to the longitudinal direction of the upper rail 4 and are opposed to each other. The insertion holes 27a, 27b formed in the support pieces 26a, 26b are provided with the operating rod 2.
5 is inserted and supported. The second support member 24 is fixed at a position near the front end of the upper rail 4 apart from the first support member 23 . This second support member 24
has a plate shape and has a fixing part 2 to the upper rail 4 on one end side.
8, and has a semi-cylindrical insertion part 29 at the other end, and further has an opening 30 connected to this insertion part 29 at the lower part. The above operation lever 25
is inserted into the insertion portion 29 through the opening 30. This second support member 24
A cutout portion 31 is formed in the upper portion of the insert portion 29 at a position close to the insertion portion 29 . Above operating lever 2
5 includes both support pieces 26 of the first support member 23.
An engaging member 32 is attached between a and 26b, and the claw 33 of this engaging member 32 engages with the engaging recess 22 of the lower rail 2, so that movement of the upper rail 4 is restrained. It's getting old. The operating rod 25 is rotatably biased by a torsion bar 34 in a direction in which the pawl 33 engages with the engagement recess 22 . One end 34 of this torsion bar 34
a is fixed by passing through a through hole 25b formed in the operating rod 25, and the other end 34b is formed in a hook shape so that it can be hooked onto the notch 31 of the second support member 24 mentioned above. It's summery. Above operating lever 2
A handle portion 25a is formed at the front end of the handle 5.

The longitudinal position adjustment device having the above configuration is assembled as follows. First, the second support member 24 is fixed to the side of the upper rail 4. On the other hand, insert the end of the operating rod 25 into the insertion holes 27a, 27b formed in the support pieces 26a, 26b of the first support member 23,
In this inserted state, the engaging member 32 is fixed to the operating rod 25 between the support pieces 26a and 26b.
Further, one end portion 34a of the torsion bar 34 is inserted into a through hole 25b formed in the operating rod 25 and then bent to be attached to the operating rod 25. Operation rod 2 assembled in this way
5. Attach the first support member 23, the engagement member 32, and the torsion bar 34 to the upper rail 4. First, the operating rod 25 is inserted into the opening 30 of the second support member 24 in a direction substantially perpendicular to its axis, that is, from below, and then moved to the right in FIG. 6 and inserted into the insertion portion 29. Furthermore, torsion bar 34
The hook-shaped end 34b of the support member 24 is hooked onto the notch 31 of the second support member 24. After this, the first support member 2
3 to the upper rail 4.

Next, the operation of the longitudinal position adjusting device having the above structure will be explained. When adjusting the longitudinal position of the seat 3, grasp the handle portion 25a and rotate the operating rod 25 against the torsional elastic force of the torsion bar 34.
As a result, the engagement between the claw 33 of the engagement member 32 and the engagement recess 22 of the lower rail 2 is released. In this disengaged state, the seat 3 is moved to a desired position. When the seat 3 reaches the desired position, release the handle 25a of the operating rod 25. Then, the operating rod 25 returns to rotation due to the elastic force of the torsion bar 34, and the claw 33 of the engaging member 32 fits into the engaging recess 22, thereby stopping the movement of the seat 3.

During such adjustment work, the second support member 24
The operating rod 25 inserted into the insertion portion 29 of the second support member 24 is prevented from coming off by the end portion 34b of the torsion bar 34 hooked to the notch 31 of the second support member 24. It is also elastically supported by the entire torsion bar 34, which is arranged so as to wrap around the operating rod 2.
5 is definitely supported. Furthermore, since the operating rod 25 is elastically supported by the torsion bar 34, rattling noise due to vibration of the operating rod 25 can be avoided.
It can prevent chattering noise from occurring.

Note that the present invention is not limited to the above-described embodiments, and various embodiments are possible. For example, the second support member 40 may be configured as shown in FIG. This second support member 40 has a fixing part 41 to the upper rail on one end side, a semi-cylindrical insertion part 42 on the other end side, and further has an upper opening 43 connected to this insertion part 42. ing. Also in this embodiment, the notch 4 is formed at a position close to the insertion portion 42.
By hooking the hook-shaped end 34b of the torsion bar to the torsion bar 4, the operating rod 25 can be prevented from coming off.

Furthermore, it goes without saying that the engagement recess for engaging the claw of the engagement member may not be formed directly on the lower rail, but may be formed on a separate member attached to the lower rail.

As explained above, in the present invention, the second support member is made of a single member, and the end of the torsion bar hooked to the second support member prevents the operating rod from coming off. . Therefore,
Since the number of parts and assembly steps can be reduced, costs can be reduced, and the operating rod can be supported reliably. In addition, since the operating rod is elastically supported by the torsion bar, it is possible to prevent rattling and chatter sounds caused by vibration of the operating rod.

[Brief explanation of the drawing]

1 and 2 show a schematic configuration of a seat of a general longitudinal position adjustment device, with FIG. 1 being a front view and FIG. 2 being a side view. FIG. 3 is a plan view showing a part of a conventional longitudinal position adjustment device, and FIG. 4 is a sectional view taken along the line - - in FIG. 5 to 7 show an embodiment of the present invention, FIG. 5 is a plan view of a part of the longitudinal adjustment device, FIG. 6 is a sectional view taken along the line - in FIG. 5, and FIG. FIG. 3 is an exploded perspective view of a part of the longitudinal adjustment device. FIG. 8 is a sectional view corresponding to FIG. 6 showing another embodiment of the present invention. 2...Lower rail, 3...Seat sheet, 4...Upper rail, 22...Engagement recess, 23...First support member, 24, 40...Second support member, 25...
Operation rod, 26a, 26b...Support piece part, 27a,
27b...insertion hole, 29, 42...insertion part, 3
1, 44... Notch portion, 32... Engaging member, 33...
...Claw, 34... Torsion bar, 34a, 34b
……edge.

Claims (1)

[Scope of claim for utility model registration] (a) A lower rail, (b) An upper rail that is attached to the lower surface of the seat and runs in the front-rear direction along the lower rail, and (c) On the side of the lower rail. a plurality of locking recesses formed at predetermined intervals along the axial direction; (d) an operating rod rotatably supported along the longitudinal direction of the upper rail; and (e) fixed to the upper rail. (f) a first support member having an insertion hole and into which the operating rod is inserted and supported; a second support member into which the rod is inserted and supported; (g) an engagement member that is fixed during the above operation and has a claw that is engaged in the engagement recess; (h) the engagement member In the longitudinal position adjusting device, the torsion bar rotates and urges the operating rod in a direction in which the claw thereof engages with the engagement recess, and the second support member rotates the operating rod in a direction substantially different from the axial direction of the operating rod. The torsion bar has a semi-cylindrical insertion part that is inserted and supported from orthogonal directions, and a notch formed at a location close to the insertion part, and one end of the torsion bar is fixed to the operating rod. The other end of the torsion bar has a hook shape and is hooked onto the notch of the second support member, and the other end of the torsion bar prevents the operating rod inserted into the insertion portion of the second support member from coming off. A device for adjusting the longitudinal position of a seat.