JPH0344561Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an attachment structure for a tie-down hook attached to an automobile body.

(Prior Art) Tie-down hooks for towing or tightening the vehicle are usually attached to the body of an automobile. This tie-down hook is generally attached to a vertical wall of a floor side panel that is continuous with a floor panel at the rear of the vehicle body.

However, if the tie-down hooks are simply attached to the vertical wall of the floor side panel as described above, there is a risk that the load applied when towing the vehicle or tightening the vehicle will concentrate on the attachment part and destroy the attachment part. There is.

Therefore, conventionally, the base of the U-shaped hook body of the tie-down hook is first securely fixed to a base plate as a reinforcing member, and then this base plate is connected to the vertical wall of the floor side panel and the reinforcing rear side frame. By sandwiching, the load applied when towing or tightening the vehicle is effectively distributed between the floor side panel and the rear side frame to avoid concentration of the load, and the sandwiching portion between the floor side panel and the rear side frame is There is a tie-down hook mounting structure that increases the reinforcing effect by using it as a mounting part (see, for example, Japanese Patent Laid-Open No. 56-3990).

However, with this conventional technology, sufficient strength can be obtained for loads in the vehicle longitudinal direction (vehicle length direction), but on the other hand, for loads in the vehicle width direction, the flat plate against the vertical wall of the floor side panel Since it only relies on the mounting strength in the direction, the rigidity is low and there is a drawback that sufficient mounting strength cannot be maintained.

(Purpose of the invention) The present invention was made to improve the above-mentioned drawbacks, and by extending and joining the tie-down hooks to the lower surface of the floor side panel, the present invention can be used not only in the longitudinal direction of the vehicle but also in the width direction of the vehicle. It is an object of the present invention to provide a tie-down hook mounting structure for an automobile that can obtain sufficient load strength.

(Means for achieving the object) In order to achieve the above object, the automobile tie-down hook mounting structure of the present invention includes a floor panel and a rear side frame extending in the longitudinal direction of the vehicle body joined to the lower surface of the floor panel. , a floor side panel consisting of a vertical wall part continuous with the floor panel and extending downward from the floor panel, and a bottom part continuous with the lower end of the vertical wall part and extending in the vehicle width direction; and a base plate having a U-shaped cross section. and a tie-down hook consisting of a tie-down hook body fitted into the base plate, and the base plate of the tie-down hook is connected to three parts of the rear side frame, the vertical wall part and the bottom part of the floor side panel. It is characterized in that it is joined across the vehicle body in a triangular shape in the front-rear direction to form a closed cross section together with the rear side frame and floor side panel.

(Function) Therefore, according to the above configuration, first, the base plate portion of the tie down hook has a U-shaped cross section and is joined across both the vertical wall portion of the floor panel and the rear side frame, so that the base plate portion of the tie down hook has a triangular shape in the longitudinal direction of the vehicle body as a whole. In addition to being integrated in this way,
Furthermore, it is also joined to the lower surface of the floor side panel extending in the vehicle width direction. Therefore, the load is also distributed to the joints on the lower surface of the floor side panels, and the load-bearing strength in the longitudinal direction of the vehicle is further improved than before, and the load-bearing strength in the vehicle width direction is also greatly improved. I will do it.

In addition, the base plate is formed with a U-shaped cross section and forms a closed cross-sectional structure together with the vertical wall of the floor side panel. Since the panel has a triangular shape that extends to the bottom of the panel and is integrally joined, it greatly improves the strength of the vehicle body on the left and right sides in the vehicle width direction, especially at the tie-down hook attachment part, and supports the tie-down hook body. This can effectively contribute to improving not only the rigidity but also the rigidity of the vehicle body.

(Embodiment) FIGS. 1 and 2 show an automobile tie-down hook mounting structure according to an embodiment of the present invention.

In each of the above figures, reference numeral 1 is a floor panel (main panel) that constitutes the bottom of the trunk of an automobile, and the side part of this floor panel 1 is bent downward at a predetermined depth to form a U-shaped cross section. It forms panel 2. This floor side panel 2 extends in the longitudinal direction of the vehicle body. The side portion of the floor side panel that is continuous with the floor panel 1 is connected to the tie-down hook 1.
The vertical wall portion 2a serves as a first tie-down hook attachment surface for attaching the tie-down hook, and the bottom surface portion 2b serves as the second tie-down hook attachment surface. On the other hand, the lower edge portion 5a of the fender panel 5 is joined to the upper edge portion 3 of the other end side wall portion 2c of the floor side panel 2.

On the other hand, reference numeral 6 denotes a floor panel 1 that is joined to the lower surface of the floor panel 1 and extends in the longitudinal direction of the vehicle body.
This is a rear side frame for reinforcement, and this rear side frame 6 is provided close to the vertical wall portion 2a of the floor side panel 2, and its lower surface portion 6a serves as a mounting surface for the third tie-down hook 10. ing.

On the other hand, the tie-down hook 10 is composed of a base plate (hook reinforcement) 10a as a reinforcing attachment member and a U-shaped hook body 10b that is fitted and fixed to the base plate 10a. The base plate 10a is formed, for example, by molding a plate material using a press or the like to have a substantially U-shaped cross section, and further includes mounting flanges 11 formed on each side edge of the base plate 10a.
- It is fixed by bending it into the illustrated shape so as to correspond to each third mounting surface and joining the corresponding mounting flange 11 to each of the above-mentioned mounting surfaces. The above-mentioned hook main body 10b is fitted and fixed to the bent portion 12 in the vertical direction in the drawing.

Therefore, according to the above configuration, the second mounting surface of the rear side frame 6 and the third mounting surface of the bottom surface portion 2b of the floor side panel 2 are connected centering on the first mounting surface of the vertical wall portion 2a of the floor side panel 2. The tie-down hook 10 having the above structure is firmly joined and fixed at three locations on the surface. Therefore, the load applied to the tie-down hook 10 when towing or tightening the vehicle is distributed to each of the three locations, and the strength against the load can be increased more than ever before.

Moreover, since the base plate 10a extends and is joined to the bottom part 2b of the floor panel 1, which extends in the vehicle width direction, sufficient rigidity can be ensured both on the left and right sides in the vehicle width direction, and sufficient load-bearing strength can be obtained. You will be able to do this.

(Effect of the invention) As explained above, the automobile tie-down hook mounting structure of the invention consists of a floor panel, a rear side frame connected to the lower surface of the floor panel that extends in the longitudinal direction of the vehicle body, and a rear side frame that is connected to the floor panel. and a floor side panel consisting of a vertical wall extending downward from the floor panel and a bottom surface continuing to the lower end of the vertical wall and extending in the vehicle width direction, a base plate having a U-shaped cross section, and a base plate that fits into the base plate. The base plate of the tie-down hook extends triangularly in the front-rear direction of the vehicle, spanning the rear side frame, the vertical wall portion and the bottom portion of the floor side panel. It is characterized in that it is joined together to form a closed cross section together with the rear side frame and the floor side panel.

Therefore, according to the present invention, first, the base plate portion of the tie-down hook has a U-shaped cross section and is joined across both the floor panel vertical wall portion and the rear side frame, so that the overall shape is triangular in the longitudinal direction of the vehicle body. In addition to being integrated, it is also joined to the lower surface of the floor side panel extending in the vehicle width direction. Therefore, the load is also distributed to the joints on the lower surface of the floor side panels, and the load-bearing strength in the longitudinal direction of the vehicle is further improved than before, and the load-bearing strength in the vehicle width direction is also greatly improved. I will do it.

In addition, the base plate is formed with a U-shaped cross section and forms a closed cross-sectional structure together with the vertical wall of the floor side panel. Since the panel has a triangular shape that extends to the bottom of the panel and is integrally joined, it greatly improves the strength of the vehicle body on the left and right sides in the vehicle width direction, especially at the tie-down hook attachment part, and supports the tie-down hook body. This can effectively contribute to improving not only the rigidity but also the rigidity of the vehicle body.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing a tie-down hook mounting structure for an automobile according to an embodiment of the present invention, and FIG. 2 is a partially cutaway enlarged front view of the same mounting structure. 1... Floor panel, 2... Floor side panel, 2a... Vertical wall part, 2b... Bottom part, 6... Rear side frame, 10... Tie-down hook,
10a...Base plate, 10b...Tie-down hook body.

Claims (1)

[Scope of utility model registration request] A floor panel, a rear side frame connected to the lower surface of the floor panel and extending in the longitudinal direction of the vehicle body, a vertical wall portion continuous to the floor panel and extending downward from the floor panel, and a vertical wall portion continuous to the lower end of the vertical wall portion in the vehicle width direction. The base plate of the tie-down hook comprises: a floor side panel consisting of a bottom surface portion extending to The rear side frame and the floor side panel are joined together in a triangular shape in the longitudinal direction of the vehicle body, spanning the vertical wall portion and the bottom portion of the floor side panel, forming a closed section together with the rear side frame and the floor side panel. Automobile tie-down hook mounting structure.