JPH0535860Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention is a rotating device that is arranged between a seat and a location where the seat is installed, and that is capable of rotating the seat about a pivot axis that extends in the vertical direction. The present invention relates to a vehicle seat comprising:

``Prior art'' As a conventional vehicle seat, for example,
-There is one disclosed in Publication No. 101832.

That is, the seat is mounted at the installation location so as to be rotatable about a pivot via a rotating device, and the rotating device is composed of a top panel and a lower panel that are arranged so as to overlap vertically, and the seat is mounted on the top panel side so as to be able to rotate about the pivot. A substantially arc-shaped upper rail member is fixedly installed, and a substantially arc-shaped lower rail member, which is also inserted into the upper rail so as to be movable in the circumferential direction centering on the pivot axis, is fixedly installed on the lower panel side. It is.

``Problems to be solved by the invention'' However, in such conventional vehicle seats, the upper rail member is separate from the upper panel, and the lower rail member is also separate from the lower panel, resulting in a large number of parts. However, there are problems in that the number of assembly steps increases, which increases costs, and since they are separate parts, it is difficult to position them during assembly, requiring assembly jigs, which further increases costs.

Further, if the upper rail member is simply formed integrally with the upper panel, for example, there is a problem that the shape becomes complicated and the cost increases.

The present invention has been made in view of these conventional problems, and aims to provide a vehicle seat that can reduce costs.

``Means for Solving the Problems'' The gist of the present invention for achieving the above purpose is to provide a seat that is arranged between a seat and its installation location, and that is centered around a pivot that extends vertically. In a vehicle seat comprising a rotation device that can be rotated by the rotation device, the rotation device has an upper panel and a lower panel arranged in a vertically overlapping manner, and the upper panel is rotated by the pivot provided at the rear end of the lower panel. is rotatably supported, a large arc-shaped tongue piece centered on the pivot shaft is integrally cut and raised on one of the upper panel and the lower panel, and a tongue piece is formed on the other panel,
A substantially U-shaped cross-sectional shape that can guide the large arc-shaped tongue piece in a circumferential direction centered on the pivot axis, and that encloses the tongue piece in a radial direction or a centripetal direction centered on the pivot axis so that it cannot be pulled out. The large guide portion is formed by a tongue piece and a presser plate that are integrally cut and formed from a panel, and a tip of the large arc-shaped tongue piece and its tip are attached to the one panel, also centered on the pivot axis. are formed by integrally cutting and raising small arc-shaped tongues in opposite directions, and the small arc-shaped tongues can be guided in the circumferential direction around the pivot axis to the other panel. and a tongue piece and a presser plate integrally cut and raised from the panel to form a small guide portion having a substantially U-shaped cross section that is irremovably held in the other direction in the radial direction or centripetal direction about the pivot axis. A vehicle seat characterized by being formed by.

``Function'' To assemble the upper panel and lower panel,
A large guide part, which is also integrally formed on the other panel side, is fitted onto a large arc-shaped tongue piece integrally formed on one of the top panel and the lower panel so as to be held therein.

Similarly, a small arcuate tongue piece integrally formed on one panel is fitted with a small guide portion integrally formed on the other panel side.

As a result, when the upper panel and the lower panel rotate relative to each other around the pivot, the large arc-shaped tongue piece moves relatively within the large guide part in the circumferential direction around the pivot, and at the same time, inside the small guide part. Similarly, the small arc-shaped tongue pieces are movable relative to each other in the circumferential direction around the pivot axis.

In response to a load that separates the Atsupa panel and lower panel in the vertical direction, the large guide part suppresses the large arc-shaped tongue piece that tries to move relative to the vertical direction, and the small guide part also This suppresses the small arc-shaped tongue piece that is about to move, thereby preventing the upper panel and the lower panel from separating from each other in the vertical direction.

In response to a load that would separate the Atsupa panel and the lower panel in the front-rear direction, the large guide part prevents the large arc-shaped tongue piece from moving relatively in one direction in the front-rear direction, and the small guide part also This prevents the small arcuate tongue piece from moving relatively in the other direction, thereby preventing the upper panel and the lower panel from separating from each other in the front-rear direction.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

Each figure shows one embodiment of the present invention.

As shown in FIGS. 1 and 2, a pair of rail units 20, 20 are arranged at the installation location 10 of the vehicle body, and a seat (not shown) is attached to the pair of rail units 20 via a rotating device 30a. ing.

The rail unit 20 is a rail 21 on the vehicle body side.
and a seat-side rail 22 that fits into the vehicle body-side rail 21 so as to be movable back and forth and supports the seat.

The rotating device 30a includes a lower panel 30 fixed to the rail 22 on the seat side with a tightening bolt 23,
It has an upper panel 40 which is arranged to overlap the lower panel 30 from above and fixes a cushion frame (not shown).

The lower panel 30 is formed into a substantially rectangular plate, and a collar member 31 is fixedly provided at the center of the rear edge. Similar to the lower panel 30, the upper panel 40 is also formed into a substantially rectangular plate, with a pivot 4 fitted in the hollow hole 32 of the collar member 31 at the center of the rear edge.
1 is fixed. The upper panel 40 is rotatably supported by the lower panel 30 by a pivot 41 .

The upper panel 40 has a large arc-shaped step 42 centered on the pivot 41, and a small arc-shaped step 43 centered on the pivot 41. A high-level surface portion 46 that is one step higher than the front and rear reference surfaces 44 and 45 is formed between the large arc-shaped step portion 42 and the small arc-shaped step portion 43.

By cutting and raising the large arc-shaped step portion 42 and the high-level surface portion 46, a large arc-shaped tongue piece 47 centered on the pivot shaft 41, which is one step lower than the front reference surface portion 44, is formed. The tip of the large arc-shaped tongue piece 47 faces toward the pivot shaft 41.

By cutting and raising the small arc-shaped step portion 43 and the high-level surface portion 46, a small arc-shaped tongue piece 48 centered on the pivot shaft 41, which is one step lower than the rear reference surface portion 45, is formed. The tip of the small arc-shaped tongue piece 48 faces in the opposite direction to the pivot shaft 41. That is, the tip of the large arc-shaped tongue piece 47 and the tip of the small arc-shaped tongue piece 48 face each other.

The lower panel 30 has a substantially U-shaped cross-sectional shape that allows the large arc-shaped tongue piece 47 to be guided in the circumferential direction around the pivot shaft 41 and to be held in a radial direction toward the central pivot shaft 41 so that it cannot be removed. large guide part 3
3 is formed. The large guide part 33 is composed of a lower guide part 34 formed by cutting and raising the base surface part 31a of the lower panel 30, and an upper guide part 35 which is a presser plate fixed to the lower guide part 34 from above. A guiding gap 34a is formed between the lower guide part 34 and the upper guide part 35.

The lower guide part 34 and the upper guide part 35 may be formed integrally.

Similarly, the lower panel 30 is provided with a substantially cylindrical member that can guide the small arc-shaped tongue piece 48 in the circumferential direction around the pivot shaft 41 and that it cannot be pulled out in the radial direction toward the pivot shaft 41 and the opposite direction. A small guide portion 36 having a letter-shaped cross section is formed. Small guide part 36
consists of a lower guide part 37 formed by cutting and raising the base surface part 31a of the lower panel 30, and an upper guide part 38 superimposed on and fixed to the lower guide part 37 from above. A guiding gap 37a is formed between the lower guide part 37 and the upper guide part 38.

Similarly, the lower guide part 37 and the upper guide part 38
It may be formed integrally with.

As shown in FIGS. 2 and 3, a drive motor 50 is mounted on the back side of the front part of the lower panel 30.
A worm 51 is rotatably supported on the front side of the central portion. The drive motor 50 and the worm 51 are connected by a drive cable 52 so that the drive motor 50 rotates the worm 51 .

A worm wheel 53 is engaged with the worm 51, and is rotatable about a rotating shaft 53a whose upper and lower ends are supported by the lower panel 30 and the upper panel 40. A pinion 54 having the same rotating shaft 53a is integrally fixed to the worm wheel 53, and a large arc-shaped rack 49 centered on the pivot shaft 41 that meshes with the pinion 54 is attached to the upper panel 40.
It is fixedly installed. Further, a holding member 55 is rotatably supported by a rotating shaft 53a and is capable of slidingly contacting the rack 49 and maintaining the meshing relationship between the rack 49 and the pinion 54.

Next, the action will be explained.

In order to assemble the upper panel 40 and the lower panel 30, the rack 49 is temporarily fastened to the upper panel 40, and the drive motor 50, worm 51 and other drive mechanisms are temporarily fastened to the lower panel 30.

Next, the lower guide part 34 and the upper guide part 35 are fixed to provide the large guide part 33, and the lower guide part 37 and the upper guide part 38 are fixed to provide the small guide part 36.

Next, the pivot 41 is inserted into the hollow hole 32 of the collar member 31.
The end of the large arc-shaped tongue piece 47 on the side of the top panel 40 and the groove 34a for guiding the large guide portion 33 are fitted into the groove 34a.
At the same time, the small arc-shaped tongue piece 48 and the guiding groove 37a of the small guide portion 36 are also aligned.

Next, the Atsupa panel 40 is centered around the axis 41.
When rotated, the large arc-shaped tongue piece 47 slides into the guiding groove 34a, and the small arc-shaped tongue piece 48 moves back and forth.
slides into the guide groove 37a. When the large arc-shaped tongue piece 47 fits into the guiding groove 34a and the small arc-shaped tongue piece 48 fits into the guiding groove 37a, the rack 49, worm 51, and other drive mechanisms are fully tightened.

As a result, Atsupa panel 40 and lower panel 3
The assembly with 0 is completed.

When a load is applied to the top panel 40 and the lower panel 30 that cause them to separate in the vertical direction, the large arc-shaped tongue piece 47 and the small arc-shaped tongue piece 48 on the top panel 40 side tend to move relatively in the vertical direction. . The large arc-shaped tongue piece 47 is suppressed by the large guide part 33 on the lower panel 30 side, and the small arc-shaped tongue piece 48 is suppressed by the small guide part 36, whereby,
The upper panel 40 does not peel off from the lower panel 30.

If an excessive load is applied to the Atsupa panel 40 in the front-rear direction, the lower panel 3
The small guide portion 36 on the 0 side prevents the small arcuate tongue piece 48 from moving forward. For loads in the rear direction, the large guide portion 33 on the lower panel 30 side
A large arc-shaped tongue piece 47 that is about to move backward
to prevent Thereby, the upper panel 40 will not peel off from the lower panel 30 even if an excessive load is applied in the front-rear direction.

According to the vehicle seat according to the embodiment, the large guide part 33 and the small guide part 36 on the lower panel 30 side are provided with a large distance from each other, so that one of the large guide part 33 and the small guide part 36 is placed in the center. When the upper panel 40 is subjected to a load that would cause it to lift significantly, the other guide portion can sufficiently suppress the lifting of the upper panel 40, thereby improving the rigidity against the peeling load.

"Effect of the invention" According to the vehicle seat according to the invention, a large arc-shaped tongue piece integrally formed on one of the top panel and the lower panel is replaced with a large arc-shaped tongue piece integrally formed on the other panel side. A small arc-shaped tongue piece is inserted into the guide part so as to be movable in the circumferential direction around the pivot axis, and similarly, a small arc-shaped tongue piece is integrally formed on one panel, and is also integrally formed on the other panel side. Since the upper panel and the lower panel were assembled by being inserted into the small guide part movably in the circumferential direction around the pivot axis, the large arc-shaped tongue piece and the small circular part were attached separately from the one panel. There is no need to provide an arcuate tongue, and there is no need to provide a large guide part or a small guide part separately from the other panel, which reduces the number of parts and simplifies positioning during assembly. The number of installation steps is reduced, and costs can be reduced.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention. Figure 1 is an exploded perspective view of a vehicle seat, Figure 2 is a sectional view of the main parts of a rotating device, and Figure 3 is a perspective view showing a pinion, rack, etc. It is. 10... Installation location, 20... Rail unit,
30...Lower panel, 30a...Rotating device, 33
...Large guide section, 36...Small guide section, 40...
Atsupa panel, 41... Pivot, 47... Large arc-shaped tongue piece, 48... Small arc-shaped tongue piece, 50... Drive motor.

Claims (1)

[Claims for Utility Model Registration] A vehicle seat comprising a rotating device disposed between a seat and an installation location of the seat and capable of rotating the seat about a pivot axis extending vertically, comprising: The rotation device includes an upper panel and a lower panel arranged to overlap one another, the upper panel is rotatably supported by the pivot provided at the rear end of the lower panel, and one of the upper panel and the lower panel , a large arc-shaped tongue piece centered on the pivot is integrally cut and raised, and on the other panel,
A substantially U-shaped cross-sectional shape that can guide the large arc-shaped tongue piece in a circumferential direction centered on the pivot axis, and that encloses the tongue piece in a radial direction or a centripetal direction centered on the pivot axis so that it cannot be pulled out. The large guide portion is formed by a tongue piece and a presser plate that are integrally cut and formed from a panel, and a tip of the large arc-shaped tongue piece and its tip are attached to the one panel, also centered on the pivot axis. are formed by integrally cutting and raising small arc-shaped tongues in opposite directions, and the small arc-shaped tongues can be guided in the circumferential direction around the pivot axis to the other panel. and a tongue piece and a presser plate integrally cut and raised from the panel to form a small guide portion having a substantially U-shaped cross section that is irremovably held in the other direction in the radial direction or centripetal direction about the pivot axis. A vehicle seat characterized by being formed by.