JPH088921Y2 - Belt anchor mounting structure of the rear quarter of automobile - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a belt anchor attachment structure in which a seat belt anchor reinforcement for three-point seat belt attachment is attached to a rear quarter of an automobile. The present invention relates to a belt anchor mounting structure of a rear quarter part in which a rear quarter part includes a brace as a reinforcing member.

(Prior Art) In an automobile equipped with a three-point seat belt as an occupant restraint device for a rear seat, a belt anchorage reinforcement for seat belt attachment is fixed to a rear quarter portion by spot welding. The mounting structure in that case is generally as shown in FIG. 6 in which the belt anchoring reinforcement 14 is welded only inside the opening of the rear quarter part (welding flange part of the quarter panel and roof side inner panel), and As shown in FIG. 7, it is roughly classified into a case where the belt anchoring reinforcement 14 is welded including the opening of the rear quarter portion.

Of the above structures, the latter is known to be more advantageous in strength than the former because it can distribute the load of the seat belt to the opening side of the rear quarter portion, and in the latter case, More specifically, two types of mounting structure are known.

As shown in FIG. 8, one is a spot welding structure in which the belt anchoring reinforcement 14 is sandwiched between the welding flanges 11a and 12a of the quarter panel 11 and the roof side inner panel 12 by three punching. is there. The other one is, as shown in FIG. 9, that the quarter portion includes a brace 13 as a reinforcing member, and the brace 13 is a weld flange portion of the quarter panel 11 and the roof side inner panel 12. It has a structure in which it is sandwiched between 11a and 12a and spot-welded by three shots, and then the belt anchoring reinforcement 14 is spot-welded to this brace 13.

In addition, in FIGS. 6 to 9, welding points are indicated by X marks.

(Problems to be solved by the invention) However, in the case of the former structure shown in FIG. 8, the belt anchoring reinforcement 14 is the opening of the rear quarter portion, that is, the welding flange portion of the quarter panel 11 and the roof side inner panel 12. Since it is a welded structure including 11a and 12a, it is advantageous in that it is excellent in strength against tension of the seat belt, but on the other hand, there is a problem that the rigidity of the entire rear quarter part is inferior due to the absence of the brace 13. is there.

On the other hand, in the latter case of the structure shown in FIG. 9, the presence of the brace 13 can increase the rigidity of the entire rear quarter portion, particularly in the vehicle width direction. Since the structure is such that only the brace 13 is welded in order to avoid hitting four sheets at the opening, there is a problem in that the strength against the tension of the seat belt is not increased. In addition, it is difficult to obtain sufficient spot welding strength with four punches.

Therefore, the present invention aims to solve the contradictory problems found in the above-described two types of structures,
An object of the present invention is to provide a belt anchor attachment structure of a rear quarter portion in an automobile, which has sufficient strength for pulling a seat belt and is effective in increasing the rigidity of the entire rear quarter portion.

(Means for Solving the Problems) In order to solve the above problems, the present invention is configured as follows.

That is, the structure of the belt anchor mounting portion of the rear quarter portion of the vehicle according to the present invention includes the brace and the belt anchor reinforcement to be spot-welded between the quarter panel forming the box-shaped cross section and the roof side inner panel. The brace is formed in a shape having a substantially channel-shaped cross section extending in the longitudinal direction and having a welding flange portion on the outer peripheral edge portion, and the welding flange portion is a welding flange of the quarter panel and the roof side inner panel. It is spot-welded by three punches sandwiched between the parts, and a notch is formed in the welding flange on the rear side. Further, the belt anchoring reinforcement is between the brace and the roof side inner panel. And the rear end of the brace extends to the notch of the welding flange of the brace. Cage, 3 the extension portion is held between the weld flange portion of the quarter panel and the roof side inner
It has a structure in which it is spot-welded by single punching.

(Operation) According to the present invention configured as described above, in the rear quarter portion formed by including the brace as the reinforcing member, the belt anchorage reinforcement includes the weld flange portions of the quarter panel and the roof side inner panel. It becomes possible to perform spot welding with this, and thereby sufficient strength against the tensile force of the seat belt can be obtained.

On the other hand, the brace itself is spot welded including the weld flanges of the quarter panel and roof side inner panel, and is placed outside the belt anchor reinforcement so that the channel cross-sectional shape that extends in the vertical direction continues to the end. Can be made. In other words, the vertical wall having the width direction in the vehicle width direction can be continuously formed on the brace up to the end without interruption, and as a result, it is possible to form a box-shaped cross section with the brace and the roof side inner panel. This increases the rigidity of the entire rear quarter section.

(Embodiment) An embodiment of the present invention will be specifically described below with reference to FIGS. 1 to 5. In addition, in FIGS. 1 to 3, the spot welding points are shown in black, and in FIG. 4, the spot welding points for double punching are indicated by crosses and the spot welding points for triple punching are indicated by black spots. Shows a cross section of a part including a brace of a rear quarter part, and FIG. 2 shows a cross section of a part including a belt anchorage reinforcement. The rear quarter part of an automobile mainly includes a quarter panel 1 and a roof side. The inner panel 2 and the inner panel 2 form a box-shaped cross section, and the brace 3 as a reinforcing member is included in the box-shaped cross section. Then, in a specification vehicle having a three-point seat belt as an occupant restraint device for the rear seat, a belt anchoring inner support 4 is additionally set.

As shown in FIG. 4, the brace 3 is formed in a substantially channel-shaped (or dish-shaped) cross section that extends in the vertical direction. The brace 3 has a lateral wall 3a extending in the front-rear direction of the vehicle and a width direction extending in the vehicle width direction. And a vertical wall 3b. Further, a welding flange portion 3c is formed on the outer peripheral edge portion of the vertical wall 3b, and the welding flange portion 3c is the opening of the quarter panel 1 and the roof side inner panel 2, that is, the welding flange portion 3c as shown in FIG. It is sandwiched between the portions 1a and 2a to be spot-welded by hitting three sheets, whereby the brace 3 and the roof side inner panel 2 form a box-shaped cross section.

Furthermore, a notch 3d for avoiding interference that allows extension of the belt anchorage reinforcement 4 is formed in the weld flange 3c on the rear side of the brace 3 slightly closer to the upper part.

On the other hand, as shown in FIGS. 2 and 4, the belt anchor fixing reinforcement 4 for attaching the belt anchor is provided with the roof side inner panel 2 in the space formed by the roof side inner panel 2 and the brace 3. It is arranged on the inner surface side of the upper portion of the brace 3 while being in contact with the outer surface.

The rear end of the belt anchorage reinforcement 4 is extended to the notch 3d formed in the weld flange 3c of the brace 3. That is, the rear end portion of the belt anchorage reinforcement 4 is extended as a welding flange portion to a position corresponding to the welding flange portions 1a, 2a of the quarter panel 1 and the roof side inner panel 2, and the extension portion 4a is also provided. Is sandwiched between the welding flange portions 1a and 2a, and is spot-welded by three-piece punching.

The plate thickness of the belt anchorage reinforcement 4 is
It is formed larger than the brace 3. Therefore, the third
As shown in the figure, by extending the recess 2c in the weld flange 2a of the roof side inner panel 2 where the extension 4a of the belt anchory reinforcement 4 is located, the extension of the belt anchory reinforcement 4 is formed. The outer surfaces of the portion 4a and the welding flange portion 3c of the brace 3 are aligned on one plane.

Also, the belt anchorage reinforcement 4 is an extension part.
On the front side (left side in the drawing) of 4a, the peripheral edge portion is spot-welded to the roof side inner panel 2, and the lateral wall of the brace 3 is used to perform this welding operation.
The work hole 3e having a size corresponding to the work hole 3e is formed in the 3a. The belt anchor reinforcement 4 has a belt anchor mounting nut 4b, and a belt anchor mounting hole 2b is formed in the roof side inner panel 2 at a portion corresponding to the nut 4c.

As described above, in the present embodiment, the belt anchoring reinforcement 4 is arranged on the inner surface side of the brace 3, and the rear end thereof is used as the welding flange portion, and the cutout portion 3d of the welding flange portion 3c of the brace 3 is formed. By extending to
The extension portion 4a is sandwiched between the welding flange portions 1a and 2a of the quarter panel 1 and the roof side inner panel 2 to enable spot welding by three-hole punching. As a result, the tensile force of the seat belt can be dispersed to the quarter panel 1 and the roof side inner panel 2 sides, and sufficient tensile strength can be obtained.

The brace 3 has a welded flange 3c except for a cutout 3d formed to avoid interference with the rear end of the belt anchorage reinforcement 4 and a quarter panel 1 and a roof side inner panel 2. Weld flange part 1a, 2
Since spot welding is performed by hitting 3 sheets on a, the same welding strength as in the past can be secured.

The brace 3 maintains the channel shape as shown in FIG. 1 over its entire length, that is, it becomes possible to continuously form the vertical wall 3b up to the end without interruption. As a result, a box-shaped cross section is formed with the roof side inner panel 2, and the rigidity in the vehicle width direction is increased.

The presence of the cutout portion 3d or the working hole 3e does not directly cause at least the reduction of the rigidity in the vehicle width direction. And in this case, if necessary, the working hole
It is also possible to increase rigidity by forming a rib 3f that is recessed on either side in a part of the periphery of 3e.

(Effects of the Invention) As described in detail above, according to the present invention, in the rear quarter portion including the brace, it is possible to further increase the rigidity of the entire rear quarter portion, and
Since it becomes possible to increase the tensile strength of the belt anchorage reinforcement, it is possible to provide a belt anchor attachment portion structure having excellent strength.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a plan sectional view of a portion including a brace of a rear quarter portion, and FIG. 2 includes a brace of a rear quarter portion and a belt anchorage reinforcement. Fig. 3 is a plan sectional view of a portion, Fig. 3 is a sectional view taken along the longitudinal direction of the welding flange portion, Fig. 4 is a perspective view showing a brace and a belt anchoring reinforcement, and Fig. 5 is a perspective view of a roof side inner panel. Is. Also, the sixth
FIGS. 7 and 7 are explanatory views showing an example of how the belt anchorage reinforcement is attached to the rear quarter part, and FIGS. 8 and 9 are belt anchory reinforcements with and without the rear quarter part. It is sectional drawing which shows an example of attachment. 1 ... Quarter panel 1a ... Weld flange 2 ... Roof side inner panel 2a ... Weld flange 3 ... Brace 3b ... Vertical wall 3c ... Weld flange 3d ... Notch 4 ... Belt anchor Enhancement 4a ... extension

Claims (1)

[Scope of utility model registration request] 1. A structure for spot welding including a brace and a belt anchorage reinforcement between a quarter panel and a roof side inner panel forming a box-shaped cross section, the brace having a cross section extending in a longitudinal direction. It is formed in a substantially channel shape having a welding flange portion on the outer peripheral edge portion, and the welding flange portion is spot-welded by three punching sandwiched between the welding flange portions of the quarter panel and the roof side inner panel. In addition, a notch is formed in the rear welding flange portion, and the belt anchoring reinforcement is arranged between the brace and the roof side inner panel, and the rear end portion is the welding flange of the brace. It is extended to the notch part of the part, and the extension part melts the quarter panel and roof side inner panel. Belt anchor attachment portion structure of Riyakuota portion of an automobile is spot welded at three beating sandwiched flange.