JP4376441B2 - Seat belt shoulder anchor mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seatbelt shoulder anchor mounting structure for mounting a seatbelt shoulder anchor that supports a seatbelt of an automobile on a shoulder portion of an occupant to a pillar portion of a vehicle body.
[0002]
[Prior art]
As shown in FIG. 3, conventionally, in order to attach a seat belt shoulder anchor 51 for supporting a seat belt of an automobile above a shoulder portion of an occupant to a pillar portion 52 of a vehicle body, an outer panel 53 constituting the outside of the pillar portion 52 is attached. The reinforcement 54 is directly attached, and the seat belt shoulder anchor 51 is fixed to the reinforcement 54.
[0003]
Specifically, both ends of the reinforcement 54 are fixed by spot welding to a pair of flanges 55 formed on both front and rear ends of the pillar portion 52 of the outer panel 53. An inner panel 56 is provided along the inside of the reinforcement 54, and a bolt portion 58 of the seat belt shoulder anchor 51 is inserted into the through hole 57 of the reinforcement 54 and the inner panel 56 from the inside of the vehicle, and a nut 59 is provided. It is fixed by.
[0004]
Thus, the force applied to the seat belt shoulder anchor 51 is supported by the reinforcement 54 having high rigidity.
[0005]
[Problems to be solved by the invention]
However, in the conventional seat belt shoulder anchor mounting structure, when a force is applied to the seat belt shoulder anchor 51 (indicated by the arrow in the figure), the force is transmitted through the highly rigid reinforcement 54, Since the stress is concentrated on the welded portion with the flange 55 directly behind the outer panel 53 and the spot welding may come off as shown in FIG. 4, the number of spot welding points is increased. Therefore, there is a problem that the manufacturing cost is increased and a lot of work is required.
[0006]
Therefore, the present invention has been devised to solve the above-mentioned problem, and the object thereof is to prevent the stress from concentrating on the flange and to securely fix the seat belt shoulder anchor to the outer panel side. It is to provide a shoulder anchor mounting structure.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is a seat belt shoulder anchor mounting structure for mounting a seat belt shoulder anchor that supports a seat belt of an automobile to a vehicle body, and is fixed to flanges formed on the front and rear of the outer panel of the vehicle body. A gusset made of a thin plate and a reinforcement made of a thick plate fixed to the gusset, the gusset extending rearward from the front flange, bent toward the inside of the vehicle, and near the rear flange. , Formed in a shape bent in the vehicle width direction vehicle inner side, and a bent portion is formed in the middle portion so that the rear is offset to the vehicle outer side, and the reinforcement is welded to the gusset, the gusset welded to pass over to the flange, the seat belt shoulder anchor to the reinforcement Those was boss.
[0008]
According to the above configuration, the force applied to the sheet over seatbelt shoulder anchor, after transmitted from the reinforcement to the gusset, the gusset is absorbed by deforming, where most of the force is absorbed, gussets and flanges The stress generated in the welded portion can be greatly reduced, and the seat belt shoulder anchor can be securely fixed to the outer panel side even if the number of spot welding locations is small.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0010]
FIG. 1 is a sectional view showing a preferred embodiment of a seat belt shoulder anchor mounting structure according to the present invention, and FIG. 2 is a sectional view showing a case where force is applied to the seat belt shoulder anchor.
[0011]
First, the structure of the seat belt shoulder anchor mounting structure according to the present invention will be described.
[0012]
In the drawing, the left-right direction is the vehicle length direction, the left side indicates the front, and the right side indicates the rear. The vertical direction is the vehicle width direction, the upper side indicates the inside of the vehicle, and the lower side indicates the outside of the vehicle.
[0013]
The seat belt shoulder anchor 1 is provided in a pillar portion 2 located on the outer rear side of a shoulder portion of an automobile occupant and supports a seat belt (not shown).
[0014]
The pillar portion 2 includes an outer panel 3 constituting the outer side, an inner panel 4 attached to the inner side of the outer panel 3, and a resin finish panel 5 provided on the inner side.
[0015]
In the outer panel 3, flanges 6a and 6b are formed on the front and rear sides of the pillar portion 2, respectively. The front flange 6a is formed extending in the vehicle length direction, and the rear flange 6b is formed extending in the vehicle width direction.
[0016]
A thin gusset 7 is stretched between the flanges 6a and 6b. Both ends of the gusset 7 are fixed to the flanges 6a and 6b by spot welding. The gusset 7 extends rearward from the front flange 6a and is slightly bent toward the vehicle inner side, and is bent toward the vehicle inner side in the vehicle width direction in the vicinity of the rear flange 6b. A bent portion 9 is formed at an intermediate portion of the gusset 7 so that the rear side is slightly offset to the vehicle outer side.
[0017]
A thick plate reinforcement 8 is provided on the inner side of the gusset 7. The reinforcement 8 is attached to the center of the gusset 7 by spot welding at a predetermined interval from the welded portion 18 between the gusset 7 and the flanges 6a and 6b.
[0018]
The reinforcement 8 is formed in a cross-sectional gate shape, and a leg portion 11 extending along the vehicle inner surface of the gusset 7 is formed at the vehicle outer end portion. The leg 11 and the gusset 7 are spot welded and fixed. The reinforcement 8 is formed with a through hole 14 through which the bolt portion 12 of the seat belt shoulder anchor 1 passes.
[0019]
An inner panel 4 is provided on the inner side of the reinforcement 8. Both end portions of the inner panel 4 are spot-welded and fixed along the inside of the gusset 7 on the vehicle inner side of the flanges 6a and 6b. Similarly to the reinforcement 8, the inner panel 4 is also formed with a through hole 15 through which the bolt portion 12 of the seat belt shoulder anchor 1 passes.
[0020]
On the inner side of the inner panel 4, a resin finishing panel 5 in which a through hole 16 through which the bolt portion 12 of the seat belt shoulder anchor 1 passes is formed.
[0021]
The seat belt shoulder anchor 1 has a bolt portion 12 that passes through the through holes 16, 15, and 14 from the inside of the vehicle and protrudes to the outside of the reinforcement 8. The bolt portion 12 is fastened to a nut 17 and fixed. Is done.
[0022]
Next, the operation of the seat belt shoulder anchor mounting structure having the above configuration will be described.
[0023]
As described above, the seat belt shoulder anchor 1 is fixed to the rigid reinforcement 8, the reinforcement 8 is fixed near the center of the thin gusset 7, and the gusset 7 is fixed to the flange of the outer panel 3. Since the force applied to the seat belt shoulder anchor 1 is transmitted from the reinforcement 8 to the gusset 7, the reinforcement 8 is pulled and moved, and the gusset 7 is deformed. Is absorbed by
[0024]
Specifically, as shown in FIG. 2, the center side portions of the welded portions 18a and 18b with the flanges 6a and 6b are deformed on both ends of the welded portion 19 with the reinforcement 8 of the gusset 7.
[0025]
As a result, most of the force applied to the seat belt shoulder anchor 1 is absorbed, and the stress generated in the welded portions 18a and 18b of the gusset 7 and the flanges 6a and 6b can be greatly reduced.
[0026]
Specifically, the seat belt shoulder anchor 1 is subjected to a force obliquely forward and downward as indicated by an arrow in the figure, but compared to the conventional seat belt shoulder anchor mounting structure, the rear belt welder anchor 1 has a particularly large force. The generated stress can be greatly reduced.
[0027]
Therefore, the seat belt shoulder anchor 1 can be reliably fixed to the outer panel 3 side even if the number of spot welding locations between the gusset 7 and the flanges 6a and 6b is reduced.
[0028]
That is, when a large force is applied to the seat belt shoulder anchor 1, the gusset 7 is deformed, but is not peeled off from the outer panel 3 due to the spot welding failure. It is securely fixed to the side.
[0029]
Further, since the bent portion 9 is formed in the middle of the gusset, this acts as a reinforcing rib in the vertical direction of the gusset 7 to increase the strength, and in the horizontal direction, the deformation of the gusset 7 due to the movement of the reinforcement 8. Is acceptable.
[0030]
Since the inner panel 4 is also formed of a thin plate like the gusset 7, it deforms with the movement of the reinforcement 8.
[0031]
【The invention's effect】
According to the brief present invention above, can be prevented from concentrating stress in flange, there is exhibited an excellent effect that the seat belt shoulder anchor also reduce the number of spot welded portions of the flange can be securely fixed to the outer panel side .
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a preferred embodiment of a seat belt shoulder anchor mounting structure according to the present invention.
FIG. 2 is a cross-sectional view showing a case where a force is applied to a seat belt shoulder anchor.
FIG. 3 is a cross-sectional view showing a conventional seat belt shoulder anchor mounting structure.
FIG. 4 is an assumed cross-sectional view showing a case where a seat belt shoulder anchor is peeled off.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat belt shoulder anchor 2 Pillar part 3 Outer panel 6a, 6b Flange 7 Gusset 8 Reinforcement 18a, 18b Welded part

Claims (1)

In a seat belt shoulder anchor mounting structure for mounting a seat belt shoulder anchor for supporting a seat belt of an automobile to a vehicle body, a gusset made of a thin plate fixed to a flange formed on the front and rear of the outer panel of the vehicle body, and fixed to the gusset The gusset extends rearward from the front flange, bends toward the vehicle interior, and is bent toward the vehicle inner side in the vehicle width direction in the vicinity of the rear flange. And a bent portion is formed in the middle portion so that the rear side is offset to the outside of the vehicle. The reinforcement is welded to the gusset, and the gusset is stretched over the flange and welded. A seatbelt shoulder anchor is fixed to the reinforcement. Doo shoulder anchor mounting structure.

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