JP2888128B2 - Rubber fin mounting structure for reclining cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reclining cover provided on a side surface of a vehicle seat, and more particularly to a rubber fin which has a notch for allowing the upper arm on the seat back side to tilt, and closes a gap between the notch and the upper arm. The present invention relates to a rubber fin mounting structure for a reclining cover to which is attached.

[0002]

2. Description of the Related Art FIGS. 1 and 2 show a seat provided with a reclining device. A lower arm A1 is provided on a rear side of a seat cushion S1, and an upper arm A2 is provided on a seat back S2. The lower end is pivotally supported on the support shaft a of the lower arm A1 so as to be tiltable. The upper arm A2 connects the support shaft a and the upper arm A2, and urges the upper arm A2 in the rising direction. It is designed to be operated by a reclining mechanism having a reclining lever 4 for tilting operation and the like.

[0003] A reclining cover 1 is attached to the lower arm A1 to cover the lower end of the arm A1 and an upper arm A2 provided with a reclining mechanism. A notch 11 through which the upper arm A2 is inserted is formed in the upper edge of the cover 1 over the tilting range of the upper arm A2. The notch 11 is provided with a rubber fin 2 that closes a gap between the notch 11 and the upper arm A2 that occurs when the upper arm A2 is tilted backward along the notch 11 (Japanese Utility Model Laid-Open No. 3-39439).

FIG. 3 shows a mounting structure of the rubber fin 2. An outer edge of the arc-shaped rubber fin 2 is formed with a flange 22 projecting downward over its entire length, while the reclining cover 1 has an inner surface facing the flange 22 toward the flange 22. A protruding thermal caulking projection 13 is formed, and the tip of the projection 13 is inserted into a through hole 220 provided in the flange 22 for thermal caulking. In this thermal caulking, the dimension from the upper end of the rubber fin 2 to the lower end of the flange 22 needs to be about 14 mm. The number of heat caulking points is usually three, and at most four, due to the workability of heat caulking.

[0005]

In such a conventional rubber fin mounting structure, since the space between the thermal rivets is considerably wide, the rubber fins 2 are deformed between them and rise up from the reclining cover 1 and the appearance is poor. was there.

Further, in the reclining mechanism provided with the spiral spring 3, the flange 22 for heat caulking of the rubber fin 2 and the upper locking end of the spiral spring 3 are moved above the locking end in order to avoid interference. Therefore, there is a problem that the upper portion of the reclining cover 1 unnecessarily swells upward and the cover 1 becomes large.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a rubber fin mounting structure that does not float between thermal caulking points without deteriorating the mounting workability. Another object of the present invention is to reduce the size of the reclining cover.

[0008]

According to the present invention, as shown in FIGS. 1 and 2, a lower arm A1 on a seat cushion S1 side is provided.
The upper arm A2 of the seat back S2 having a lower end pivotally supported by the lower arm A1 and a reclining mechanism for adjusting the upper arm A2 to a desired tilting position so as to cover the reclining mechanism on the lower arm A1 side. A notch 11 is formed over the tilting range of the upper arm A2 along the upper edge, and the notch 11 has a reclining cover 1 in which a rubber fin 2 for closing a gap between the upper arm A2 is attached. A flange 22 projecting downward is formed on one side edge of the rubber fin 2 in the front-rear direction, and a locking projection 23 projecting downward on the other side and having a large-diameter head at the tip is provided. The reclining cover 1 has a rubber fin 2 on its inner surface at a position corresponding to the flange 22 in the direction of the flange 22. A projecting thermal caulking projection 13 is formed, and a thin rib 12 extending toward the projection 23 is formed in a shelf shape at a position corresponding to the locking projection 23 of the rubber fin 2, and an end of the rib 12 is formed. L-shaped cut 12 at the edge
0, and the locking projection 23 of the rubber fin 2 is inserted into the notch 1 of the reclining cover 1 so that the other side of the rubber fin 2 is interposed between the reclining cover 1 and the thin plate rib 12.
A rubber fin mounting structure is formed so as to be fitted into and locked to the rubber fin 20 and to thermally caulk the tip of the thermal caulking projection 13 of the reclining cover 1 to the flange 22 of the rubber fin 2.

Further, according to the present invention, the lower arm is provided on the outer surface at the lower end of the upper arm A2, one end of which is locked to the support shaft a of the lower arm A2, and the other end is locked to the upper arm A2 at a position above the support shaft a. In the reclining device provided with the spiral spring 3, the flange 22 of the rubber fin 2 does not interfere with the spiral spring 3.
A rubber fin mounting structure is formed in the front half part, and the thermal caulking projection 13 of the reclining cover 1 is thermally caulked on the flange 22.

[0010]

[Action] Because thermal caulking is performed with a part of the rubber fin 2,
At the same number of caulking locations, the spacing between the caulking locations can be made narrower than in the prior art, thereby preventing the rubber fins 2 from lifting up. The other part of the rubber fin 2 is a projection 2 for locking the rubber fin 2.
By fitting 3 into the notch 120 of the reclining cover 1, workability can be stably locked with good workability.
The other part of rubber fin 2 is reclining cover 1
And between the thin ribs 12, the floating between the locking projections 23 is prevented. In addition, rubber fin 2
By providing the thermal caulking portion in the first half of the rubber fin 2 that does not interfere with the spiral spring 3, the upper end of the reclining cover 1 can be lowered, and the reclining cover 1 can be downsized.

[0011]

In the embodiment shown in FIGS. 1 and 2, a lower end of an upper arm A2 connected to a seat back S2 is pivotally supported on a lower arm A1 provided on a rear side surface of a seat cushion S1 so as to be tiltable. The support shaft a of the lower arm A1 and the center of the lower end of the upper arm A2 located above the lower arm A1 are connected by a spiral spring 3 provided on the outer surface side of the upper arm A2, and the upper arm A2 is urged in an upright direction. The upper arm A2 can be reclined at a predetermined angle by operating the reclining lever 4.

The reclining cover 1 is made of resin and attached to the lower arm A1, and covers the lower ends of the lower arm A1 and the upper arm A2. Reclining lever 4
Project from an opening 10 provided in the reclining cover 1. A notch 11 through which the upper arm A2 is inserted is formed in the upper edge of the reclining cover 1 over the tilting range of the arm A2. The notch 11 is provided with a rubber fin 2 for closing a gap formed between the notch 11 and the upper portion of the lower arm A1 when the upper arm A2 is tilted backward. The rubber fin 2 is an arc-shaped rubber integrally formed body and includes a main body portion 20 having a horizontal flange portion 21 formed on a peripheral edge thereof, and a vertical flange portion 22 vertically projecting downward from an outer edge of a front half portion of the horizontal flange portion 21. ing. A plurality (three in the example shown) of the vertical flange portion 22 at a predetermined interval.
Are formed. A plurality (two in the illustrated example) of locking projections 23 project from the lower surface of the rear half of the horizontal flange portion 21 at a predetermined interval. Locking projection 2
Reference numeral 3 includes a shaft 23a and a head 23b having a larger diameter than the shaft 23a.

On the other hand, the inner surface of the reclining cover 1 has a plurality of projections 13 at positions along the front half of the notch 11.
Is formed. The projections 13 correspond to the vertical flange portions 22 of the rubber fins 2, and the columnar tips of the projections 13 are inserted into the through holes 220 of the vertical flange portions 22. On the inner surface of the reclining cover 1, a thin shelf-like rib 12 projecting horizontally is formed at a position along the rear half of the notch 11. The thickness of the rib 12 is set to a thickness corresponding to the length of the shaft portion 23a of the locking projection 23 of the rubber fin 2 and has an opening at an end edge thereof, and a front end in an L-shape. An extended notch 120 is formed.

In order to attach the rubber fin 2 having the above structure to the reclining cover 1, as shown in FIG. 2D, the rear half of the horizontal flange portion 21 of the rubber fin 2 is interposed between the reclining cover 1 and the thin plate rib 12. The shaft portions 23a of the locking projections 23 of the rubber fin 2 are fitted into the cuts 120 of the ribs 12 of the reclining cover 1, and the tips of the projections 23 of the reclining cover 1 are respectively attached to the vertical flange portions 22 of the rubber fin 2. Fit into the through hole 220. The rubber fin 2 is attached to the notch 11 of the reclining cover 1 by thermally caulking the tip to the vertical flange portion 22.

In the mounting structure according to the present embodiment, the heat crimping portion of the rubber fin 2 is formed only in a part of the rubber fin 2 in the longitudinal direction. In comparison with the above, the mutual space is narrowed at the same number of attachment points, and the rubber fins 2 do not float. The other part of the rubber fin 2 is easily and stably locked by fitting the locking projection 23 of the rubber fin 2 into the notch 11 of the reclining cover 1.
Does not increase the number of installation steps. Further, the other portion of the rubber fin 2 is interposed between the reclining cover 1 and the thin plate rib 12, so that the floating between the locking projections 23 is prevented.

In the reclining device in which the spiral spring 3 is provided on the outer surface of the upper arm A2, a thermal caulking portion requiring a height is formed in the first half of the rubber fin 2 which does not interfere with the spiral spring 3, and the second half thereof. Smaller than the heat caulked part (10mm
If the attachment portion is formed by the locking projection 23, the reclining cover 1 can be made smaller than before.

In a reclining device which does not need to consider the interference between the thermal caulking portion and the reclining mechanism,
A heat caulking portion may be provided in the latter half of the rubber fin 2. At least one thermal caulking point is sufficient, and the end of the rubber fin 2 is fixed by thermal caulking, and the other portion is attached by fitting the locking projection 23 of the rubber fin 2 into the notch of the reclining cover 1. The workability is further improved.

[0018]

According to the rubber fin mounting structure of the reclining cover of the present invention, it is possible to provide a mounting structure that is stable and does not rise from the reclining cover without increasing the number of mounting steps as compared with the conventional structure. . Further, the reclining cover can be downsized.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a vehicle seat to which a rubber fin mounting structure for a reclining cover according to the present invention is applied.

FIG. 2 (A) is a partial front view of a reclining device provided on a vehicle seat, FIG. 2 (B) is an exploded perspective view of a rubber fin mounting structure of the present invention, and FIG. It is the figure which looked at the mounting structure of the invention from the back side of a reclining cover, Drawing 2 (D) is a sectional view in the position which met DD line of Drawing 2 (C), and Drawing 2 (E) shows a figure. E of 2 (C)
It is sectional drawing in the position along the -E line.

FIG. 3 (A) is an exploded perspective view of the reclining cover of the conventional mounting structure viewed from the back side, and FIG. 3 (B).
FIG. 2 is a cross-sectional view showing a mounting state of a conventional mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reclining cover 11 Notch 12 Thin rib 120 L-shaped cut 13 Projection for thermal caulking 2 Rubber fin 22 Flange 23 Projection for locking 3 Spiral spring A1 Lower arm A2 Upper arm

Continuation of the front page (56) References Japanese Utility Model Showa 61-18042 (JP, U) Japanese Utility Model Showa 63-52447 (JP, U) Japanese Utility Model Utility Model 3-39439 (JP, U) Japanese Utility Model Utility Model 3-39441 (JP) (U, U) Japanese Utility Model Hei 5-46344 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) A47C 1/024

Claims (2)

(57) [Claims] 1. A lower arm side of a reclining device comprising a lower arm on a seat cushion side, an upper arm on a seat back side pivotally supporting a lower end of the lower arm, and a reclining mechanism for adjusting the upper arm to a desired tilting position. A notch is formed so as to cover the reclining mechanism, and a notch is formed along the upper edge along the tilting range of the upper arm, and the notch is provided with a rubber fin that closes a gap between the upper arm and the reclining cover. A flange protruding downward is formed on the side edge of one side of the direction, and a projection protruding downward on the other side is provided with a locking projection having a large diameter head at the tip, while the reclining cover has For thermal caulking protruding in the direction of the flange at the position corresponding to the flange of the rubber fin on the inner surface A projection is formed, and a thin plate rib extending toward the projection is formed in a shelf shape at a position corresponding to the locking projection of the rubber fin, and an L-shaped notch is provided at an end edge of the rib. The locking projection of the rubber fin is fitted into the notch of the reclining cover so that the other side of the rubber fin is interposed between the reclining cover and the thin plate rib, and the tip of the thermal caulking projection of the reclining cover is connected to the flange of the rubber fin. Rubber fin mounting structure for reclining cover that is heat caulked. 2. The reclining mechanism includes a spiral spring provided on an outer surface of a lower end of an upper arm, one end of which is locked to a support shaft of the lower arm, and the other end of which is locked to the lower arm at a position above the support shaft. 2. The mounting structure for a recliner cover according to claim 1, wherein the flange of the rubber fin is formed in the front half of the rubber fin which does not interfere with the upper locking end of the spiral spring, and the flange for the heat staking of the reclining cover is thermally squeezed on the flange.