JPH0333553B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the mounting structure of a tie-down bracket used to restrict the movement of a vehicle during shipping or the like.

Conventionally, this type of mounting structure is known as shown in FIGS. 1 to 3 (a similar structure is disclosed in Japanese Utility Model Application Publication No. 56-93309).

In this structure, the rear end of the front floor panel 1, the front end of the rear floor panel 2, and the front end of the rear side member 3 are overlapped and fixed by spot welding s, and the holes 4 formed in the rear side member 3 are connected to each other. Tie-down bracket T is fixed by welding. This tie-down bracket T is formed in a substantially square shape when viewed from the front, and a funnel-shaped hole 5 is formed at the bottom thereof, as shown in FIG. This hole 5 is arranged so as to be concentric with the hole 4 of the rear side member 3, and both side walls 6 of the tie-down bracket T are connected to the vertical wall portion 3a of the rear side member 3, as shown in FIG. It is fixed by welding.

However, in the conventional tie-down bracket mounting structure, when the tie-down hook F and the tie-down bracket T are engaged during shipping, etc., the tensile load P acting on the tie-down bracket T is As shown in Figure 2, since it acts in the hanging direction, the front floor panel 1, rear floor panel 2 and rear side member 3
The problem was that a load in the peeling direction was applied to the welded part, which was unfavorable in terms of load transmission.

This invention was devised in view of the current situation, and its purpose is to improve the rigidity against the tensile load acting on the tie-down bracket, and to significantly increase the bonding strength between the rear side member and the floor panel. It is an object of the present invention to provide a tie-down bracket mounting structure that can be improved.

In order to achieve this object, the present invention provides the above-mentioned joint in a structure in which a tie-down bracket is welded and fixed to a rear side member disposed on the rear side of the vehicle body from the joint fixing part between the front floor panel and the rear floor panel. An L-shaped bracket is interposed between the fixing part and the attachment part of the tie-down bracket to form a vertical section box-shaped part, and the rear side member is fixed to the bottom wall of the L-shaped bracket, while the side wall of the L-shaped bracket is fixed to the bottom wall of the L-shaped bracket. , a reinforcing flange extending from the front end of the tie-down bracket is fixed by welding.

Next, the present invention will be explained in detail based on the embodiments shown in FIGS. 4 and 5. In this embodiment, the same components and parts as those of the conventional example are given the same reference numerals as those of the conventional example, and detailed explanation thereof will be omitted here.

The rear end of the front floor panel 1 is overlapped with the front end of the rear floor panel 2, as shown in FIG. is the joint fixing part between the front floor panel 1 and the rear floor panel 2, and the tie-down bracket T.
An L-shaped bracket B is disposed so as to straddle the horizontal surface portion 2b of the rear floor panel 2 and the rear side member 3 facing therebetween. This L-shaped bracket B extends in the vehicle width direction as shown in FIG. 2b is welded and fixed. Further, the lower end of the L-shaped bracket B is overlapped with the joint between the two floor panels 1 and 2, and the lower end of the L-shaped bracket B and the floor panels 1 and 2 are fixed by three-ply welding. At the same time, the L-shaped bracket B and the rear floor panel 2 form a box-shaped vertical section 10.

The front end portion of the rear side member 3 is joined to the bottom wall Bb of the L-shaped bracket B in the vertical section box-shaped portion 10 constructed as described above, and is fixed by spot welding.

A tie-down bracket T is provided at a portion of the rear side member 3 located behind the vertical section box-shaped portion 10, and the hole 5 of the tie-down bracket T is concentric with the hole 4 of the rear side member 3. The tie-down bracket T is provided with both side walls 6 welded and fixed to the vertical wall portion 3a of the rear side member 3, and a reinforcing flange portion 7 extending from the front end of the tie-down bracket T is shown in FIG. Side wall of the above L-shaped bracket B as shown.
Fixed by welding to Ba.

Therefore, in the tie-down bracket mounting structure according to this embodiment, the tie-down bracket T is fixed to the side wall Ba of the L-shaped bracket B via its reinforcing flange portion 7, and the tie-down bracket T is acted upon. Since the tensile load P of the tie-down hook is distributed and received by the vertical section box-shaped portion 10, the tensile load P does not act on the welded portion of the front floor panel 1 and rear floor panel 2, and the welded portion is In addition to improving the fixing strength, the bonding strength between both floor panels 1 and 2 and the rear side member 3 is also significantly improved.

Since the present invention has the above configuration, it is possible to improve the rigidity against the tensile load acting on the tie-down bracket, and also improve the bonding strength between the floor panel and the rear side member.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the attachment part of a tie-down bracket to which the present invention is applied, FIG. 2 is a cross-sectional view showing the attachment structure of a conventional tie-down bracket, FIG. 3 is a perspective view of the same essential part, The figure is a cross-sectional view showing a tie-down bracket mounting structure according to an embodiment of the present invention, and FIG. 5 is a perspective view of the main part thereof. DESCRIPTION OF SYMBOLS 1...Front floor panel, 2...Rear floor panel, 3...Rear side member, 7...Reinforcement flange part, 10...Vertical section box-shaped part, B...L
Bracket, T... Tie-down bracket,
Ba...side wall, Bb...bottom wall.

Claims (1)

[Scope of Claims] 1. A structure in which a tie-down bracket is fixed to a rear side member disposed on the rear side of the vehicle body from a joint fixing portion between the front floor panel and the rear floor panel, wherein the front floor panel and the rear floor panel An L-shaped bracket is interposed between the joint fixing part of the tie-down bracket and the attachment part of the tie-down bracket so as to span the horizontal part of the rear floor panel and the rear side member facing thereto, thereby forming a box-shaped part in vertical section. , mounting of the tie-down bracket, characterized in that the rear side member is fixed to the bottom wall of the L-shaped bracket, and a reinforcing flange extending from the front end of the tie-down bracket is fixed to the side wall of the L-shaped bracket. structure.