JP2000095144A - Chassis bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light chassis bracket exhibiting sufficient strength, which can be easily manufactured. SOLUTION: A single sheet of plate material is folded to integrally form a mount surface 2 mounted to a chassis side, a seat surface 3 horizontally extending from the mount surface 2, and reinforcement ribs 4, 4 for connecting the mount surface 2 and the seat surface 3. Each of ribs 4, 4 at the mount surface 2 is bent to be stacked together for the purpose of reinforcement. This makes it possible to simplify manufacturing and reinforcement of the portion requiring strength.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chassis bracket for attaching a carrier or the like to a truck chassis frame or the like.

[0002]

2. Description of the Related Art As shown in FIG. 5, a truck bed a is generally mounted on a chassis frame f via a plurality of chassis brackets b, b. ing.

As shown in FIG. 6, a bracket b for a chassis has a mounting base c having a U-shaped cross section and a mounting base c.
And a seating surface d provided on the top of the mounting frame c. The rear surface d of the mounting base c is fixed to a side surface of the chassis frame f having a U-shaped cross section by bolts or rivets (not shown). The loading platform a and the like are seated on the side of the seating surface d to be mounted, and are attached and fixed by bolts and the like (not shown).

[0004]

By the way, the conventional chassis bracket b having such a structure is mounted on a mounting base c.
And the seating surface d are separately machined, and then the seating surface d is welded to the top of the mounting table c as shown in the figure. In order to process each of them separately, it is necessary to purchase and manage the materials independently, and to press the blank shaped material and the press work independently, which requires considerable man-hours and steps. In addition, as a next step after the forming process, welding work of the mounting table c and the seat surface d is required, but the welding work usually causes molding failure due to fumes and spatters adhering to the mold and the work, There is a problem that there is a time difference from the press working, and the press working cannot be performed simultaneously or continuously. Therefore, the stock as an intermediate product has been generated after the press working. For this reason, it is necessary to manage the stock of each intermediate product, to secure a stock storage place, and to transport the product to a welding work site, which is the next process, which requires a great deal of man-hours and cost. Furthermore, welding work is a completely different process from the press method, and this welding work not only significantly increases the cost of the process, but also allows for a single factory or single company Manufacture was often difficult and was a major factor impeding rationality. It is also important to control the quality of the welding work, and in order to supply stable and reliable products to the market, setting and maintaining welding conditions and inspecting products after welding require a great deal of man-hours and costs. In addition, an assembly jig is required to improve and stabilize the mutual positional accuracy of the parts to be assembled, and it takes a great deal of cost and time to manufacture the jig and correct it due to wear, thus prolonging the product development period. And production adjustments to fix jigs.

[0005] As described above, there are many problems in the conventional structure processed by a different method, and it has been difficult to achieve an improvement in production efficiency and a reduction in manufacturing cost.

Also, such a bracket b for a chassis
In particular, since a large amount of load tends to concentrate on the vicinity of the bolt mounting hole e of the mounting base c, the thickness of the entire mounting base c may be increased in order to increase the strength of this part.
For example, a method of adding a reinforcing plate (not shown) or the like to the back surface d side or the like is adopted.

However, if the thickness of the entire mounting table c is increased, the weight of the entire chassis bracket b is increased and the material cost is increased.
When a reinforcing plate is attached to the back surface d side of the device, there is a problem that the number of parts is increased, and the production, management, and assembling of each part is costly.

The present invention has been devised in order to effectively solve such problems, and its main object is to provide a light and sufficiently strong welding work and a welding work which deteriorate productivity. It is an object of the present invention to provide a novel bracket for a chassis which can improve productivity by eliminating a process of manufacturing a separate part.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a mounting surface mounted on a chassis, a seat surface extending perpendicularly from the mounting surface, and a connection between the seat surface and the mounting surface. In a bracket for a chassis provided with reinforcing ribs, the mounting surface, the seating surface, and the reinforcing ribs are integrally formed by folding a single plate material by press working, and the mounting surface side of the reinforcing ribs is bent. It is reinforced by being superposed on the mounting surface side.

That is, by folding a single plate and integrally forming the mounting surface, the seating surface and the reinforcing ribs, irrational measures such as an increase in the number of working steps due to the production and welding work of a plurality of parts as in the prior art are required. In addition, the entire manufacturing process of the chassis bracket can be performed by pressing as the same method, and transfer can be performed, that is, the entire manufacturing process can be performed with one stroke of the press machine Therefore, production efficiency can be greatly improved.

When the plate is folded, the mounting surface of the reinforcing rib is bent and overlapped with the mounting surface, so that the thickness of the portion is doubled and the strength is improved.

Therefore, if the mounting surface is mounted on the chassis side with bolts, rivets, etc. using the reinforced portion (overlapping portion), the strength on the mounting surface side where stress is easily concentrated can be easily improved. Can be done.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a chassis bracket 1 according to the present invention, and FIG. 2 is a conceptual view showing a use state thereof.

As shown in the figure, the chassis bracket 1 has a mounting surface 2 attached to the side surface of the chassis frame f, and a seat surface 3 extending horizontally from the mounting surface 2 is formed continuously. The support portion h of the carrier a on the surface 3
Is to be seated.

On both sides of the seat surface 3, reinforcing ribs 4 and 4 each having a substantially inverted L-shape are formed continuously therefrom, and connect the mounting surface 2 and the seat surface 3 to each other. 3 is supported.

Further, the reinforcing ribs 4 and 4 are further formed with flange portions 5 and 5 which are bent outwardly, respectively. The flange portions 5 and 5 are overlapped on both sides of the mounting surface 2 respectively. It is supposed to be.

Each of the flange portions 5 and 5 is provided with a pair of bolt holes 7 in upper and lower two stages, and the mounting surface 2 is provided by using the bolt holes 7, 7, 7, and 7.
Is attached to the side surface of the chassis frame f and fixed. The number of the bolt holes 7 is not limited to two in the upper and lower stages, and may be increased as necessary.

Further, a bolt mounting hole 8 is formed substantially at the center of the seating surface 3 so that the support portion h of the cargo bed a seated on the seating surface 3 is connected and fixed to the seating surface 3 by bolts (not shown). It is supposed to.

In the thus constructed chassis bracket 1 of the present invention, the load applied to the seating surface 3 is applied to the mounting surface 2 via the reinforcing ribs 4, 4, and the flange portions 5, 5 are provided. To the chassis bracket 1 side. At this time, the bolt mounting holes 7, 7, 7, 7,
Since the vicinity of 7 is reinforced by the flange portions 5 and 5 extending from the reinforcing ribs 4 and 4, the loading platform a can be reliably supported without inducing deformation or the like due to load concentration.

Next, a method of forming the chassis bracket 1 having such a structure will be described.

First, a steel plate having a uniform thickness is prepared, and a plate material 9 having a shape as shown in FIG. 3 is formed by a punching machine.

As shown in the figure, the plate member 9 has a shape in which four corners of a rectangular plate are cut out, and a hexagonal mounting surface 2 is formed at an upper part in the figure. A rectangular seating surface 3 is formed continuously below the surface 2 in the drawing. The seating surface 3 has a substantially L-shaped reinforcing rib 4,
4 are formed, and wedge-shaped flange portions 5 and 5 are formed continuously with the reinforcing ribs 4 and 4 on the mounting surface 2 side of the reinforcing ribs 4 and 4.

Then, such a plate member 9 is set on a press machine, and a virtual boundary line S (solid line S1 and dotted line S
2, one-dotted dashed line S3 and two-dotted dashed line S4) are fold-folded and mountain-folded, respectively, and deformed three-dimensionally as shown in FIG. Thus, the chassis bracket 1 of the present invention as shown in FIG. 1 is obtained.

More specifically, in FIG. 3, a solid line S1 which is a boundary between the mounting surface 2 and the seating surface 3, and a two-point broken line S4, S4 which is a boundary between the seating surface 3 and the reinforcing ribs 4, 4 are shown. 90 ° each
While folding the mountain, reinforcing ribs 4 and 4 and flanges 5 and 5
Press forming is performed so that the dotted lines S2 and S2, which are the boundary lines between the flange portions 5 and 5 and the mounting surface 2, are respectively bent by 180 °. Will be.

Thereafter, or before the press forming, the bracket bracket 1 of the present invention can be easily obtained by drilling the bolt holes 7, 8 in the flange portions 5, 5 and the seating surface 3 as necessary.

Therefore, the operation of assembling the separate members by welding or the like as in the prior art is not required, and the production efficiency is improved. In addition, the periphery of the bolt hole 7 where strength is required can be easily reinforced and the reliability can be improved. It is possible to obtain the chassis bracket 1 having high performance.

[0028]

In summary, according to the present invention, the following excellent effects can be exhibited.

(1) Since one plate is formed by folding, a welding operation or the like is not required, and the production efficiency is improved.

(2) When the plate material is folded and formed, two portions requiring strength are overlapped, so that the work of adding a reinforcing plate or the like after forming is unnecessary, and the strength can be easily improved. In addition, if the strength is the same, weight reduction can be achieved.

(3) Since it is obtained by relatively simple folding, a degree of freedom in shape is ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a bracket for a chassis according to the present invention.

FIG. 2 is a conceptual diagram showing a mounting state of a chassis bracket according to the present invention.

FIG. 3 is an exploded view of the chassis bracket according to the present invention.

FIG. 4 is a perspective view showing a state in which the chassis bracket according to the present invention is folded and formed.

FIG. 5 is a conceptual diagram showing a mounting state of a conventional chassis bracket.

FIG. 6 is a perspective view showing an example of a conventional chassis bracket.

[Description of Signs] 1 Chassis bracket 2 Mounting surface 3 Seat surface 4 Reinforcement rib 5 Flange section 9 Plate material f Chassis

Claims (1)

[Claims] 1. A mounting surface mounted on a chassis side,
In a bracket for a chassis having a seating surface extending at right angles from the mounting surface and a reinforcing rib connecting the seating surface and the mounting surface, a single plate material is folded on the mounting surface, the seating surface and the reinforcing rib. A bracket for a chassis, wherein the bracket is formed integrally with the reinforcing rib, and the reinforcing rib is reinforced by bending the mounting surface of the reinforcing rib so as to overlap the mounting surface.