JPH0629106Y2 - Hinge structure of automobile seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a hinge structure for rotatably connecting a seat bottom and a seat back of an automobile seat.

[Conventional technology]

Conventionally, as a hinge structure of a vehicle seat, a structure as shown in FIG. 5 is generally known. This is fixed to a rear end portion of a seat bottom frame (not shown) in a state where a plate-like hinge bracket 1a is projected substantially upward, and a seat back frame 21 is rotatably connected to the hinge bracket 1a about a horizontal axis. Thus, the seat back 2 is supported so as to be tiltable with respect to the seat bottom 3.

The hinge bracket 1a is made of a steel plate, and its surface is coated. In the hinge bracket 1a, a hinge portion cover 4a is attached to the tunnel portion Ta side of the seat S, and a knuckle (not shown) is attached to the door side of the seat S. The hinge portion cover 4a is formed of a synthetic resin in a vertically elongated bag shape, and is attached to the hinge bracket 1a by covering the hinge bracket 1a from above in advance. In this state, the seat back frame 21 is attached. Has been. As a result, the exposed portion of the hinge bracket 1a is shielded.

In recent years, there is a tendency to reduce the vehicle height as much as possible,
In the case of FR cars, if the ground clearance is reduced, the tunnel part will be
As shown in the figure, it will largely protrude toward the passenger compartment. For this reason, the seat bottom frame is arranged closer to the center side of the seat S than in the case of FIG. 5, whereby the hinge bracket 1 fixed to the seat bottom frame is bent and formed so that the upper part thereof projects toward the tunnel T side. It Therefore, as the hinge portion cover 4b, a plate member bent to correspond to the outer surface shape of the hinge bracket 1 is used as shown in FIG. 7, and the hinge portion cover 4b is attached to the hinge bracket 1 by a screw 42b. .

[Problems to be solved by the device]

In the above-mentioned conventional hinge structure for a vehicle seat, the plate-shaped hinge cover 4b is adopted when the hinge bracket is bent for the following reason. That is, the hinge portion cover is attached to the bent portion 1 of the hinge bracket 1.
It is difficult to mold the bag-shaped hinge cover in a bent state corresponding to No. 1 with a synthetic resin because it may be impossible to perform the die cutting, and the bag-shaped hinge cover formed in the bent state is bent as described above. This is because it is difficult to fit the hinge bracket 1 into the work.

However, in the plate-shaped hinge part cover 4b, as shown in FIG. 7, the peripheral edges 12, 41b of the hinge bracket 1 and the hinge part cover 4b come into contact with the skin 22 of the seat back 2, so that the seat back 2 is tilted. Each time the operation is performed, the skin 22 may be rubbed and worn. In addition, when the hinge cover 4b is attached, it is necessary to tighten the screw 42b, so that there is a drawback that the work is troublesome.

This invention has been made in order to eliminate such a conventional defect, and even for a bent hinge bracket, the hinge part cover can be easily attached and the manufacturing thereof can be easily performed. Moreover, it is an object of the present invention to provide a hinge portion structure for a vehicle seat that can cover the edge portion of the through hole of the hinge bracket.

[Means for Solving the Problems]

In order to achieve the above object, in the present invention, a plate-shaped hinge bracket is fixed to the rear end of the seat bottom so as to project toward the seat back, and the hinge back allows the seat back to rotate about a horizontal axis. In the hinge part structure of the automobile seat in which the hinge bracket is attached and is bent so as to be convex outward of the seat, and the cover is attached to the hinge bracket, the cover is almost the same as the hinge bracket. It has a corresponding shape and is formed in a bag shape with one end open, and a slit is formed at a predetermined position in the longitudinal direction so that it can be bent along the bent part of the hinge bracket, and the cover has the opening. A tongue portion is formed at the end, and the hinge bracket passes through the through hole formed in the skin trim of the seat bottom. The tongue portion is formed so as to cover the edge portion of the through hole on the side of the seat back. [Operation] According to the above configuration, the hinge portion cover is bent in the bag-shaped hinge portion cover. Since the slit is formed so that it can be done, simply by fitting the hinge part cover into the bent hinge bracket from above, the hinge part cover is formed at the slit forming position along the bent part of the hinge bracket. It can be bent and easily installed. Moreover, even if the hinge cover is bag-shaped, it can be manufactured in a flat state without bending, so it is easy to use synthetic resin to form a tongue at the open end of the hinge cover, and the seat bottom skin By forming the above-mentioned tongue part so as to cover the edge of the through hole formed in the trim on the side of the seat back, the opening edge of the through hole formed in the skin trim of the seat bottom can be completely covered and the appearance is improved. However, it is possible to prevent snagging and tearing of the trim.

〔Example〕

In FIG. 1, the hinge bracket 1 is fixed to the rear end portion of the seat bottom frame 31 of the seat bottom 3, and the hinge bracket 1 is covered with the hinge portion cover 4 to rotate from the seat back frame 21. Support shaft 2
3 is pierced, and the seat back 2 is rotatably connected to the seat bottom 3 about the horizontal axis X by the rotation support shaft 23.

As shown in FIG. 2, the hinge bracket 1 is arranged so as to penetrate the skin trim 32 through a through hole 33 formed in the skin trim 32 of the seat bottom 3 and to project substantially upward. After being bent so as to project to the tunnel T side, an upper piece 14 is formed upward by the bent portion 11 that is convexly bent to the tunnel T side. (See figure) Support hole 1
3 is formed through.

As shown in FIGS. 3 and 4, the hinge portion cover 4 has a pair of front wall portions 41 having substantially the same shape as the front shape of the protruding portion of the hinge bracket 1 from the skin trim 32.
And a rear wall portion 42 and a peripheral wall portion 43 provided between the peripheral edges of the back wall portion 42 so as to keep them at a predetermined distance from each other, and formed in a vertically long cap shape with the lower surface opened by integral molding with synthetic resin. To be done. Front wall part 4
1, the rear wall portion 42 and the peripheral wall portion 43 form the hinge portion cover 4 in a square shape whose inner surface is substantially the same as the outer surface shape of the hinge bracket 1 and whose cross-sectional shape is flat.

The front wall portion 4 is provided on the upper portion of the hinge portion cover 4 so that the through hole 44 corresponds to the support hole 13 of the hinge bracket 1.
1 and the rear wall portion 42, and a slit 45 is formed in the rear wall portion 42 and the peripheral wall portion 43 so as to have a horizontal V-shape in a side view of the hinge portion cover 4. This slit 45 is hinged with the front wall portion 41 at the slit 45 forming position as a folding hinge as shown in FIG. 4 by the solid line and the one-dot chain line so that the upper and lower parts of the hinge part cover 4 sandwich the slit 45. It is configured so that it can be bent corresponding to the bent portion 11 of the bracket 1.

The hinge cover 4 is covered on the hinge bracket 1 in a state where the opening width of the slit 45 is bent by the bending portion 11 of the hinge bracket 1 to be smaller.

An opening 46 is formed on the lower end surface of the hinge portion cover 4 by the edges of the front wall portion 41, the back wall portion 42, the peripheral wall portion 43, and the like, and a tongue portion 411 is formed from the edge of the front wall portion 41. It is formed so as to project obliquely downward. The hinge portion cover 4 is configured such that the tongue portion 411 covers the opening edge of the through hole 33 of the skin trim 32 on the tunnel T side.

The slit 45 of the hinge portion cover 4 may be formed by increasing or decreasing the opening width thereof according to the degree of bending of the bending portion 11 of the hinge bracket 1.

Further, in the hinge portion on the door side between the seat back 2 and the seat bottom 3, the hinge bracket and the seat back frame are rotatably connected by a rotation support shaft 23 in substantially the same manner as the hinge portion on the tunnel T side shown in FIG. A knuckle (not shown) is provided at the connecting portions of the two, and the knuckle allows the seatback 2 to be maintained in a desired tilted state.

In the hinge portion structure having the above-mentioned configuration, the hinge portion cover 4 has the front wall portion 41 and the rear wall portion 42 both in a flat state,
Since the hollow portion between the two can be formed in a straight shape, it can be easily integrally formed with the synthetic resin even in the bag shape.

The hinge cover 4 has a slit 45 at a predetermined position.
Since the notch is formed, simply by covering the hinge bracket 1 from the opening 46 as shown in FIG. 4,
The front wall portion 4 at the position where the slit 45 is formed along the bent portion 11
1 becomes a bent hinge and is easily bent, so that it can be attached to the hinge bracket 1. Moreover, since the hinge portion cover 4 is bent corresponding to the bent portion 11, the hinge bracket 1 can be reliably covered.

Furthermore, the hinge bracket 1 is provided by the hinge cover 4.
Since the entire outer surface of the portion exposed to the outside from the skin trim 32 can be shielded, the conventional coating process for the hinge bracket can be omitted. Moreover, since the peripheral edge 12 of the hinge bracket 1 is also covered by the hinge cover 4, it is possible to reliably prevent the outer skin 22 of the seat back 2 from being worn.

Moreover, the through hole 33 of the skin trim 32 is formed by the tongue portion 411.
Since the edge can be covered, the accuracy of drilling the through hole 33 can be made relatively low, and at the time of use, the edge of the through hole 33 is reliably prevented from being broken by being hooked. be able to.

In the above embodiment, the hinge portion cover 4 having one slit 45 is used, but the present invention is not limited to this, and a hinge portion cover having a plurality of slits depending on the bending condition of the hinge bracket is used. May be.

Further, in the above embodiment, the case where the seat back frame 21 is configured to be attached to the seat S center side of the hinge bracket 1 is shown, but the present invention is not limited to this, and for example, the seat back frame 21 is disposed and attached on the opposite side. May be.

[Effect of device]

According to the hinge portion structure for a vehicle seat of the present invention, a slit is formed at a predetermined position in the hinge portion cover even for a bent hinge bracket, so that the hinge is bent along the bent portion of the hinge bracket. Since the partial cover is surely bent at the slit forming position, even a bag-shaped hinge part cover can be easily attached by simply covering the hinge bracket. Moreover, even if the hinge portion cover is in the shape of a bag, it can be manufactured in a flat state without bending, so that it can be easily manufactured by synthetic resin molding.

Also, by forming a tongue portion at the open end of the hinge cover and forming the tongue portion so as to cover the edge portion on the side of the seat back of the through hole formed in the skin trim of the seat bottom, the opening edge is completely covered. It can be hidden to improve its appearance and prevent snagging and tearing of trim.

[Brief description of drawings]

1 is a perspective view showing the present invention, FIG. 2 is an exploded perspective view showing a seat bottom of FIG. 1, FIG. 3 is an enlarged perspective view of a hinge part cover of FIG. 1, and FIG. 4 is a hinge part cover. And FIG. 5 is a perspective view showing a conventional hinge portion structure, FIG. 6 is a perspective view showing another conventional hinge portion structure, and FIG. It is an expanded sectional explanatory view in the VII-VII line of a figure. 1 ... Hinge bracket, 2 ... Seat back, 3 ...
Seat bottom, 4 ... Hinge cover, 11 ... Bend, 45 ... Slit, 46 ... Opening, S ... Seat, X ... Horizontal axis.

Claims (1)

[Scope of utility model registration request] 1. A plate-shaped hinge bracket is fixed to a rear end portion of a seat bottom so as to project to a seat back side, and the seat back is rotatably attached to the hinge bracket about a horizontal axis. In the hinge portion structure of the vehicle seat in which the cover is attached to the hinge bracket while being bent so as to be convex outward of the seat, the cover has a shape substantially corresponding to the hinge bracket, It is formed in a bag shape with one end open, and a slit is formed at a predetermined position in the longitudinal direction so that it can be bent along the bending part of the hinge bracket, and the cover has a tongue part at its open end. The hinge bracket passes through a through hole formed in the skin trim of the seat bottom, and the seat back side of the through hole Hinge structure for an automobile seat, characterized in that the tongue portion so as to cover the edge portion is formed.