JPS6328773A - Hook mounting part structure for automobile - Google Patents

Abstract

PURPOSE:To force local deformation of a flange to be difficult to occur, to reduce the number of parts, and to reduce the number of works, by a method wherein the four sides of the opening of the end part of a cross member are closed by means of a single end part covering member in a manner to weld the four sides to the covering member. CONSTITUTION:In a cross member 5, a channelform first and second members 5a and 5b are welded to each other, a flange 5c is formed to the opening at the end part of the cross member. In the flange 5c, a nut 5e is welded to the inner side surface of a car body. In a reinforcing plate 6, serving as an end part covering member, which closes the opening at the end part of the cross member 5 and serves as an end part covering member superposed with the flange 5c, the upper part, the front part, and the lower part thereof are bent internally of a car body to form flanges 6a, 6b, and 6c, and by means of the flanges, the reinforcing plate 6 is welded to the cross member 5.

Description

[Detailed description of the invention] [Industrial application field] This invention is unique! ! This relates to the structure of the hook attachment part used when towing and transporting the lJ@.

(Prior Art) Conventionally, the structure of the attachment part of a so-called tie-down hook, which is used to secure a vehicle when loading and transporting an automatic crossbody vehicle onto a ship or a land transport trailer, is shown in Fig. 5. There are those shown in FIGS.

(Refer to the Nissan Sunny 812 Car Parts Log, published in September 1985 by Nissan Motor Co., Ltd.) In the front part of the small body,
A cross member 15, which is welded to the radiator dovetail panel 10 and supports the Uzi1-Taco dovetail panel 10, extends in the horizontal direction.

The cross member 15 is formed by welding a first member 15a and a second member 15b in the shape of a bouillon, and includes a first part UJ 15a.
There is a 7 flange 15d on one side of the opening at the end of the Φ body.
It extends in one width direction. A flange 15c is provided on the side of the end opening of the second member 15b toward the inner body so as to be antibacterial toward the vehicle body. Eighth cuts 16d and 16e are formed on the inside of the first reinforcing plate 16, and flanges 16a and 16b are bent 1b toward the inside of the body on the upper, front, and lower sides. 16c died, L,
(7)') The first reinforcing plate 16 is welded to the first member 158 by the lunges 16a, 16b, and 16c.

On the other hand, the second reinforcing plate 17 has a nut 17a welded to the inside of the vehicle body, and a flange 17b bent toward the inside of the vehicle body.
is welded to the second part 15b on the inner side of the heavy body than the flange 15G so that the hole 150 provided in the flange 15c and the position i of the nut 17a coincide.

! The side member 12 extending in the front-rear direction of the body Ii is
A channel-shaped member 13 and a closing plate 14 are welded together, and the closing plate 14 extends downward from the channel-shaped member 13. A bent flange portion 14a is provided at the front portion of the cloning plate 14, and a hole 14b through which a bolt 18 passes is provided.

A first reinforcing plate 16 is attached to the cross member 15. After the second reinforcing plate 17 is attached, the flange 15d is attached to the flange 14. 'l, the second reinforcing plate 17 has a flange 15
It is welded to the closing plate 14 through c, and
The first member 15 and the side member 12 are joined. In this way, the closing plate 14 and the first reinforcing plate 16, and the second reinforcing plate 17 and the flange portion'
After fitting 15C and closing plate] 4,
The knock 11 is tightened with a bolt 18 from the outside of the Φ body of the closing plate 14.

(Problems to be Solved by the Invention) However, although the conventional fI structure has a strong IQ as a hook for fixing heavy body transportation, it is possible to When used for non-driving, a larger load is applied, so the
There was a risk that the cross-sectional deformation of the 1st member would be C0 and the closing plate would be bent.

On the other hand, in order to prevent the above problems from occurring using such a conventional structure, there is a way to ensure strength by increasing the thickness of the steel used, but in this case, the increase in the , 1 of material cost? ! Another problem arises, such as addition.

In addition, in the conventional structure, the two reinforcing plates were separately welded to the cross member, and then the cross member and the closing plate 1 were welded, which resulted in a large number of parts and during installation. It takes a lot of man-hours, and Harasaku's task is 4! :M? I was there.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention includes a side member that is welded to a channel-shaped member extending in the longitudinal direction of the vehicle body to form a box-shaped side member, and a closing member that further extends downward from the channel-shaped member. In a fi structure in which the end of a box cross-sectional cross member extending in the left-right direction of the vehicle body is brought into contact with Play 1, and the hook is tightened via a rat provided at the corresponding contact part, the end of the cross member is At least one of the four sides of the opening is provided with a flange bent at a substantially right angle toward the outside of the opening, and a nut for fastening the hook is welded to the flange. 1゜ [for n] According to such a means, the opening at the end of the cross member is welded so as to span the four sides of the cross member. Since the four sides are welded and closed, the torsional strength of the end of the cross member is increased, while the nut is welded to the flange and the flange is subjected to a concentrated load. Since the multiple loads applied to the cross member are distributed and transmitted to the ends of the cross member, local deformation of the flange is less likely to occur.

(Example) The present invention will be explained below based on one example of actual flff.
Figure 3 is a diagram showing an embodiment of the present invention.

At the front part of the 795 body, a 1-span member 5 is installed as a stake, extending in the left-right direction of the vehicle body. A radiator support panel 10 is welded to the first member 5 as in the conventional case. The first member 5 is formed by welding a channel-shaped first member 5a and a second member 5b. At the opening of the end of the cross member 5, a 7-lunge 5C is provided by bending the second member 5b into a widthwise direction. A flange 5d is provided by bending in the front direction. A nut 5e is welded to the inner surface of the vehicle body on the flange 5C. [1] In the Mi envelope plate 6 as an end covering member which closes the opening at the end of the 1st member 5 and overlaps with the flange 5C, a flange bent toward the inside of the vehicle body is provided at a part, the front part, and the lower part of the part, respectively. 6a, 6b, 6c are provided and nuts 6d, 6e are melted on the inner surface, and some of them are v! I7J is provided with a hole 6f for one bolt 8F, and flanges 6a and 5b.

The reinforcing plate 6 beam [1 is welded to the member 5 by 6C. At this time, the 86f overlaps the nut 5e of the flange 5C in a manner (Q I ).

The side member 2 is made up of a channel-shaped member 3 and a closing plate 4 welded to each other, and the closing plate 4 extends downward from the channel-shaped member 3, and its upper end is bent toward the inside of the vehicle body to form a 7-lunge 4a. Holes 4b are bored in the closing plates 1 to 4 at positions corresponding to the nuts 6d, 6e, and 5e, and the closing plate 4 and the flange 5d of the first Lt 15a are melted together, and the second part 05b The flange 5C, the reinforcing plate 1-6, and the closing plate 4 are joined together and welded, and the cross member 5 and the closing plate 4 are joined.

The hook 1 is fastened to the outside of the cow body of the closing plate 11 by a bolt 8.

In the above configuration, the opening at the end of the cross member 5 is closed by welding the four sides to the brakes 1 and 6, so the torsional strength of the end of the cross member 5 is high. At the same time, the load applied to the nut 5C welded to the flange 5C is distributed by the reinforcing plate 6 and is transmitted to the entire group, making it difficult for local deformation to occur. In comparison, a one-knock mounting part with greater durability and strength can be obtained. In addition, in this structure, only one reinforcing plate 6 is required.The number of parts is reduced and the installation work becomes easier.

In the above embodiments, the reinforcing plate was used as the end covering member that closes the end opening of the cross member and is fitted to the flange, but a closing plate may also be used as the end covering member. FIG. 4 shows another embodiment. 3 In this embodiment, as in the previous embodiment, lT
A side member 2' extending in the rearward direction and a cross member 5' extending in the left-right direction are provided at the front of the vehicle body.

[1st member 5' is A7 channel-shaped first member 5'
A and the second member 5'b are welded together to form a rectangular cross section, but there is a J on the periphery of the opening at the end of the second member 5'.
3, from the first member 5'a, a flange 5'i,
5'6 and 5'Q are provided on the upper side, the front side of the Φ body, and the lower side, respectively, bent at approximately right angles toward the outside of the opening.
A flange 5'c from the second member 5'b is also bent at a substantially right angle toward the outside of the opening. Flange 5'i
, 5'd, 5'Q.

Each nut 5+ j is attached to the inside surface of the car body of 5' c.
, 5rf, 5'h, 5'e8 are watching. here,
Flange 5'i, 5'd, 5'Q, 5'
c has nuts 5'j, 5'f.

Provide holes for bolts and holes 8' at positions corresponding to 5'h and 5'e.

On the other hand, a mullit 5'j,
5'f, 5'h, 5'e1. : Hole 4 in the corresponding position
Leave 'b open. [1st member 5' and closing plate 4' are nuts 5'j, 5't'
, 5'h, 5'e corresponding to hole 4'b (17r, tl-7,: After that, each flange 5'
Dissolve i, 5'd, 5'Q, 5'c? It is joined by a 1η filter. 1η where cross member 5' and closing plate 4' are connected, and dowel 1' with bolts 8' and nuts 5'j, 5'f, 5'h
, 5'e.

According to this embodiment, the closing plate 4' is welded to all of the openings 4a-t of the closing 5' and closes the openings 4a-t during this time, so that the torsional strength of the end of the stub bar 5' is increased. In addition, J button 5' f and nut 5'
e. Since the distance between the pre-L-5'j and the pre-[-5'h can be increased, the load can be widely distributed, so that it is possible to obtain a structure in which the strength 1σ of the attachment portion of the hook 1' is greater than that of the conventional structure. In addition, since only one additional plate is used, the number of parts and the number of installation steps can be reduced, resulting in a total of 41 issues.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to create an automobile hook mounting structure, which has a larger #strength 1q than the conventional one, with a smaller number of parts and less work.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of one part of the present invention/1lIilζ1, Fig. 2 is a perspective view of the hook attachment part, Fig. 3 is a cross-sectional view of Fig. 2, Fig. 4 1 is an exploded perspective view corresponding to FIG. 1 showing another embodiment, FIG. 5 is a perspective view of the front part of the knock body showing the knock device, and FIG. Figure 7 is a diagram equivalent to Figure 1, and a cross-sectional view corresponding to Figure 8 or Figure 3. 1...Hook, 2...Side member, 3...Channel shaped member, 4... closing plate, 5...
・Cross member, 5C...Flange part, 5e...Nut, 6...Reinforcement plate (end covering member) Patent applicant: Nissan Motor Co., Ltd. Figure 2 Figure 3 Figure 5 Figure 6

Claims (1)

[Claims] A side member with a box cross-section is formed by welding to a channel-shaped member extending in the longitudinal direction of the vehicle body, and a cross member with a box cross-section extending in the left-right direction of the vehicle body is attached to a closing plate extending downward from the channel-shaped member. In a structure in which the ends are brought into contact and the hook is fastened via a nut provided on the corresponding contact part, at least one of the four sides of the opening at the end of the cross member is bent approximately at right angles to the outside of the opening. A curved flange is provided, and a nut for fastening the hook is welded to the flange, while an end covering member, which is overlapped with the flange while closing the opening, is welded across the four sides of the opening. Automotive hook mounting structure.