JP3926920B2 - Connection structure of rear frame and rear skirt - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coupling structure of a rear frame having a tow hook and a rear skirt in a vehicle.
[0002]
[Prior art]
In a vehicle, as shown in FIGS. 3 and 4, a coupling structure of a rear frame having a tow hook and a rear skirt is generally known.
In the first conventional example shown in FIG. 3, the upper portions of the two left and right pulling hooks 22A and 22B are attached to the lower portion near the rear end portion of the rear frame 21 by spot welding or the like. Reference numeral 30 denotes a hook hole for locking a tow rope or the like. A rear skirt 23 is coupled to the rear end portion of the rear frame 21 by appropriate means.
[0003]
The second conventional example shown in FIG. 4 is disclosed in Japanese Utility Model Laid-Open No. 2-98004, and is an extension for reinforcing a rear bumper mounting portion fixed to the rear end portion of the rear side floor member 112 of the body. The rear member 113 is extended to the rear end panel 114 while bulging below the rear side floor member 112, and a rear hook 111 is attached to the lower bulging portion 113b of the extension rear member 113. is there.
As a result, the offset amount of the rear hook can be reduced to prevent the generation of a large moment due to input during towing. The rear end panel 114 is coupled to flanges 113c and 113d at the rear end of the extension rear member 113.
[Problems to be solved by the invention]
However, in the conventional structure thus configured, in the first conventional example of FIG. 3, the upper portions of the traction hooks 22A and 22B are attached to the lower portion near the rear end portion of the rear frame 21 by spot welding or the like. Therefore, when towing or tying down another vehicle, the input load acting on the towing hooks 22A and 22B is borne only by the rear frame 21, and not only the burden load transmission efficiency is bad, The coupling between the rear frame 21 and the rear skirt 23 is also weak, and it is necessary to partially reinforce the periphery of a bumper stay insertion hole (not shown).
In the second conventional example of FIG. 4, the extension rear member 113 for reinforcing the rear bumper mounting portion is fixed to the rear end portion of the rear side floor member 112, so that an extra member is required and the rear hook Although the offset amount can be reduced to prevent generation of a large moment due to input during traction, etc., the rear hook 111 is still attached only to the lower bulge portion 113b of the extension rear member 113, so that The input load acting on the rear hook 111 is borne only by the extension rear member 113, and the transmission efficiency of the borne load is poor.
[0005]
Therefore, the present invention solves various problems in the conventional structure of connecting the rear frame and the rear skirt provided with the tow hook, improves the bonding strength between the rear frame and the rear skirt, and inputs from the tow hook. It is an object of the present invention to provide a coupling structure between a rear frame and a rear skirt that can efficiently transmit a load to a vehicle body such as a rear skirt.
[0006]
[Means for Solving the Problems]
Therefore the present invention is a coupling structure of Li Ya frame and a rear skirt coupled rear skirt over the tow hook attached to the said rear frame near the rear end lower rear frame rear portion, said rear frame rear end A rear flange is formed at the rear end of the rear portion and the tow hook, and the upper portion of the rear flange formed on the tow hook is superposed on the vehicle body front side of the rear flange of the rear frame, and the lower portion is A lower flange portion of the rear frame is bent around the lower flange portion, is flush with the rear frame rear flange, and forms a substantially T-shaped or Y-shaped coupling surface with the rear skirt. This is a means for solving the problem.
[0007]
[Embodiment]
Embodiments of the present invention will be described below with reference to the drawings.
1 and 2 show an embodiment of the present invention. FIG. 1 (A) is a perspective view of a coupling structure of a rear frame and a rear skirt according to the present invention, and FIG. 1 (B) is FIG. 2) is a side view as viewed from the direction of arrow D, and FIG.
FIG. 1 shows the vicinity of the rear end portion of the rear frame 1 on the left side of the vehicle body. The upper side of the rear frame 1 having a U-shaped cross section is bent to form an upper flange 4. A rear flange 5 is formed.
The pulling hook 2 is attached to the lower portion of the rear frame 1 by spot welding or the like with the attaching portion 6 on the upper portion thereof as if both sides thereof are sandwiched. The pulling hook 2 is formed by superposing two left and right plates 2A and 2B, and an outer peripheral flange 8 is formed and reinforced on most of the plate-like portion 7 below the plates 2A and 2B. At the same time, the rear flange 9 formed at the rear end portion of the pulling hook 2 is configured to be overlapped or flush with the rear flange 5 of the rear end portion of the rear frame 1.
Then, the rear skirt 3 (two-dot chain line) is spot welded over the rear flange 5 of the rear end of the rear frame 1 and the rear flange 9 of the rear end of the traction hook attached to the lower portion near the rear end of the rear frame 1. It is characterized by having been combined by. Reference numeral 10 denotes a hook hole.
[0008]
As shown in FIG. 1 (B), the vicinity of the rear end of the bottom of the rear frame 1 is slightly inclined downward, and the area of the rear flange 5 is increased as much as possible to increase the area of coupling with the rear skirt 3. It is configured as follows.
Accordingly, the upper mounting portion 6 of the pulling hook 2 that is mounted with both sides of the rear frame 1 being sandwiched is also configured to be inclined in accordance with the bottom inclination of the rear frame 1. However, it goes without saying that the inclined shape is not necessarily a required configuration and may be a straight shape.
The rear flange 9 formed at the rear end portion of the pulling hook 2 is superposed on the front surface of the rear flange 5 of the rear frame 1 (left side in FIG. 1B), and its lower end portion. 1 and the lower portion thereof is flush with the rear flange 5 of the rear frame 1 and becomes substantially T-shaped or Y-shaped in rear view as shown in FIG. A flange having a reduced width is formed.
[0009]
The rear skirt 3 forming the rear end of the vehicle body is joined by spot welding or the like over the rear flange 5 of the rear frame 1 and the rear flange 9 of the traction hook 2 formed in this way.
FIG. 2 is a cross-sectional view of each part A, B, C, and E in FIG. 1, and clearly shows the coupling state of each part. 2A and 2B showing the cross-sections A and B, the coupling between the rear flange 5 of the rear frame 1 and the rear flange 9 of the traction hook 2 is firmly coupled with the rear skirt 3. It is understood that The lower part of the rear flange 9 in the tow hook 2 forms a substantially T-shaped or Y-shaped coupling surface with the rear skirt 3, as shown in FIG. The rear flange 9 of the tow hook 2 and the rear skirt 3 are directly coupled to each other. As described above, the input load to the tow hook 2 is relatively uniform due to the substantially T-shaped or Y-shaped coupling surface. It is dispersed in the rear skirt 3 which is the vehicle body part.
[0010]
With the above configuration, the input load to the tow hook 2 is not borne by the rear frame 1 alone, but is effectively distributed to the rear skirt 3 that is the vehicle body portion. The traction hook 2 coupled to both of the rear skirts 3 also serves as a reinforcing member for the coupling portion between the rear frame 1 and the rear skirt 3, so that a back door opening portion adjacent to the coupling portion is provided. 12, and sufficient strength of the bumper stay insertion portion provided corresponding to the U-shaped groove of the rear frame 1 can be secured.
[0011]
As mentioned above, although each embodiment of the present invention has been described, within the scope of the present invention, the shape of the rear frame and the shape of the rear flange, the shape of the tow hook and the shape of the rear flange, both these rear portions Related configuration such as overlapping form between flanges, combined form of rear frame and tow hook, and combined form of both rear flanges and rear skirt (for example, not limited to spot welding, etc. Etc.) can be used as appropriate.
[0012]
【The invention's effect】
As described above in detail, according to the present invention, since the rear skirt is coupled across the rear frame rear end and the rear hook rear end mounted near the rear frame rear end, The input load to the vehicle is not borne only by the rear frame, but is also effectively distributed to the rear skirt which is the vehicle body portion.
In addition, since the tow hook is connected to both the rear frame and the rear skirt, it also serves as a reinforcing member for the connecting portion between the rear frame and the rear skirt, so that an effective reinforcing function for the connecting portion is exhibited. In addition, an extra member is not required to reinforce the coupling portion unlike the conventional one, the number of parts can be reduced, and the manufacturing process is simplified and the cost is reduced.
[0013]
In addition, it is possible to secure sufficient strength of the back door opening portion adjacent to these connecting portions and the bumper stay insertion portion provided corresponding to the U-shaped groove of the rear frame.
Further, the rear flange of the tow hook and the rear skirt form a substantially T-shaped or Y-shaped coupling surface, so that the input load to the tow hook is relatively uniform in the rear skirt which is the vehicle body part. Dispersed stably.
As described above, according to the present invention, the rear frame that improves the coupling strength between the rear frame and the rear skirt and efficiently transmits the input load from the tow hook to the vehicle body side such as the rear skirt. And a rear skirt are provided.
[Brief description of the drawings]
FIG. 1 shows an embodiment of a coupling structure between a rear frame and a rear skirt according to the present invention. FIG. 1 (A) is a perspective view of a coupling structure between a rear frame and a rear skirt, and FIG. FIG. 2 is a side view of FIG.
FIG. 2 is a cross-sectional view taken along lines A, B, C, and E of FIG.
FIG. 3 is a perspective view showing a first conventional example of a coupling structure of a rear frame and a rear skirt.
FIG. 4 is a perspective view showing a second conventional example of a coupling structure of a rear frame and a rear skirt.
[Explanation of symbols]
1 Rear frame 2 Tow hook 3 Rear skirt 4 Upper flange 5 Rear flange (rear frame)
6 Mounting part 7 Plate-like part 8 Outer peripheral flange 9 Rear flange (tow hook)
10 Hook hole 11 Bumper stay insertion part 12 Back door opening

Claims (1)

In the coupling structure of Li Ya frame and a rear skirt coupled rear skirt over the rear frame rear end and said rear frame rear portion tow hook attached near the bottom, the rear frame rear end and rear tow hook A rear flange is formed at each end, and a rear flange formed on the traction hook is superposed on the front side of the rear flange of the rear frame, and a lower portion of the rear flange is a rear flange of the rear frame. A rear frame and a rear skirt which are bent around the lower end portion of the rear frame and are flush with the rear flange of the rear frame to form a substantially T-shaped or Y-shaped coupling surface with the rear skirt. Bonding structure.

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