JPS63115932A - Assembly method for mounting bracket for shock absorber - Google Patents

Abstract

PURPOSE:To improve the processability of a knuckle bracket by jamming the bracket divided into 3 parts in an outer shell, welding each lower supporting plate, and fastening the outer shell. CONSTITUTION:A knuckle bracket 14 is divided into brackets 15, 16, and 17. Brackets 15-17 are placed on an outer shell 27, and lower supporting plates 20 and 20a are abutted to supporting plates 24 and 25 and welded. Then upper supporting plates 19 and 19a are abutted, welded, and joined. Thus, the processability of the knuckle bracket can be improved with the necessity to process precisely inner diameter dimensions of the bracket divided to 3 parts eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bracket assembly method for mounting a shock absorber, and more specifically, it is used when connecting a shock absorber 1 for a vehicle such as a two-wheeled vehicle or a four-wheeled vehicle, such as a strut type shock absorber, to a wheel side. Mounting a shock absorber suitable for use as a knuckle bracket relates to a bracket assembly method.

A conventional knuckle bracket of this kind and a connection between the knuckle bracket and a shock absorber shown in FIG. 1 are used.

That is, the knuckle bracket 1 includes a knuckle fixing bracket 4 having two parallel support plates 3°3 on both sides of the lower part of a semicircular holding part 2, and a curved fixing bracket 4 facing the semicircular holding part 2. Two support plates 6 parallel to both sides of the holding part 50
, 6, and a support bracket 7 having an eco-shaped cross section, and a hose holding bracket 8, which is provided on the outer periphery of the holding portion of the knuckle fixing bracket 4 and has an LL-shape.

Knuckle fixing bracket 4 and support bracket 7
and the hose holding bracket 8 are independently pressed, and the support plate 3 of the knuckle fixing bracket 4 is
and the support plate 6 of the support bracket 7 are overlapped and aligned and connected to each other by spot welding 9, and a hose holding bracket 8 is connected to the outside of the knuckle fixing bracket 4 by projection welding 1O.

On the other hand, on the shock absorber 11 side, the diameter of the vicinity of the end of the outer shell 12 is reduced by drawing or the like to form a press-fit part 13, and this press-fit part 13 is formed by the holding parts 2 and 5 of the knuckle bracket 4. The shock absorber 11 is press-fitted into the cylindrical portion and connected to the wheel side of the vehicle via the knuckle bracket 4.

However, in the above knuckle bracket 4 and shock absorber 11, in order to improve the fatigue life of the outer shell 12, there is a
The press-fit portion 13 of the outer shell 12 is press-fitted,
It is necessary to precisely process the mutual press-in part extraction method.

That is, the inner diameter of the knuckle bracket 4 must be controlled so that it matches the dimensions of the press-fitting part 3 of the outer shell 12, so press working is difficult. The production of knuckle brackets was extremely difficult as precision control was required during the process.

Further, the bow holding bracket 8 is also press-formed separately and then welded to the knuckle fixing bracket 4, resulting in poor workability.

On the other hand, when the outer shell 12 is press-fitted into the cylindrical part of the knuckle bracket 840, it is troublesome to control the outer diameter dimension of the cylindrical part, and the press-fitted part 13 is made by drawing or cutting.
Because the outer shell itself was reduced in diameter or made smaller in diameter, it was also difficult to process the outer shell itself.

Therefore, an object of the present invention is to provide a bracket assembly method for mounting a shock absorber that improves the workability of the knuckle bracket, allows rough dimensional accuracy of the knuckle bracket and outer shell, and eliminates the need for welding the hose bracket. It is.

In order to achieve this object, the present invention includes a pair of left and right first and second brackets, and a third bracket held between the first and second brackets.
It has three brackets divided into three brackets,
The first and second brackets have a holding part that bulges outward in a curved shape, this holding part, and support plates that stand up above and below this holding part, and the third bracket has an upper wall that extends downward. a first step of holding the outer periphery of the outer shell of the shock absorber with the holding portion of each bracket, the holding portion having a holding portion curved toward the direction of the shock absorber; and support plates hanging downward from both sides of the holding portion; The first bracket is attached to both sides of the support plate of the third bracket. a second step of welding together each lower support plate of the second bracket;

This method is characterized by comprising a third step of welding together the upper support plates of the first and second brackets and tightening the outer shell.

An embodiment of the present invention will be described below with reference to FIG. 2. The knuckle bracket 14 according to the present invention has a first
, a second bracket 15.16, and a third bracket 17 held between the eleventh and second brackets 15.16.

The first bracket 15 has a holding portion 1 that bulges outward in a curved shape.
8, and an upper support plate 19 and a lower support plate 20 for welding which are vertically provided above and below this holding part 18, and the upper support plate 1
At 9, a hose bracket 22 having a star-shaped hole 21 for inserting a hose is integrally erected.

Similarly, the second bracket 16 also has a central holding part 18α that bulges outward in a curved shape, and stands up above and below this holding part 18α.
It has an upper support plate 19α and a lower support plate 20G for welding.

The bracket 17 of Bunsai 3 has a holding part 23 whose upper wall is curved downward, and a welding support plate 24j hanging downward from both sides of this holding plate 23.
25.

When the above three brackets 15, 16, and 17 are assembled, each of the holding parts 18, 18 (L, 23) forms a cylindrical part. However, it is not necessary to form a precise cylindrical body. .

Note that the total inner circumference length of each holding plate 18, 18α, 23 is set in advance so that the total inner circumference length is shorter than the outer circumference length of the outer shell 27 by a predetermined dimension. , 23 are simply applied to the outer periphery of the outer shell 27 of the shock absorber 26, as will be described later.
A slight gap occurs between 19α.

The outer shell 27 on the side of the shock absorber 26 is made of a cylindrical pipe, and does not have a reduced diameter portion as in the conventional case. However, it goes without saying that a press-fitting part with a reduced diameter may be used as in the conventional case.

The method for assembling the knuckle bracket 4 of the present invention is to first attach the holding part 2 of the third bracket 17 to the lower part of the outer periphery of the outer shell 27 on the outer periphery near the end of the outer shell 27.
Guess 3, then hit 7 on both sides of Utershiel 27].

Apply the holding parts 18, 18α of the second brackets 15, 16, and hold the outer shell 27 with the three brackets 15, 16, 17 (step 1).In this state, the first.
The lower support plates 20 and 20α of the second bracket 15 and 16 are brought into contact with both outer surfaces of the support plate 24 and 25 of the third bracket 17, and are welded together by spot welding 28 or the like (
2nd step).

Next, the first. The upper support plates 19 and 19α of the +2 brackets 15 and 16 are also forcibly brought into contact with each other and welded together by spot welding 29 or the like (third step).

At this time, when the first and third brackets 15 and 160 come into contact with each other, a force is generated to tighten the desired outer shell 27. In this way, the first, second and third parts are divided into three parts. The third brackets 15, 16, and 17 are combined by hugging the outer periphery of the outer shell 27, and in practice, the knuckle bracket 14
This is the same state as when the outer shell 27 is press-fitted into the cylindrical portion, and force is also generated when the outer shell 27 is tightened, especially when the upper support plates 19 and 19α of the first and second brackets 15 and 16 are welded.

Also, since the hose bracket 22 is integrally molded with the +X bracket 15, there are three brackets 15, 1.
6. When 17 is connected, the hose bracket 22 stands up on the outside of the knuckle bracket 14.

As described above, according to the present invention, since the three divided brackets are simply tied together and welded to the outer shell, ■ there is no need to precisely process the inner diameter dimensions of the three divided brackets, and one ball It is possible to improve the machinability of the knuckle bracket by eliminating precision control processes such as through machining, and ■The outer shell of the shock absorber does not require drawing or cutting to obtain the outer diameter dimension, making machining easier. ■ The troublesome press-fitting process between the outer shell and knuckle bracket is no longer necessary, and the ease of assembly is improved.■ It is no longer necessary to provide a separate bracket for the hose or troublesome welding work. This has advantages such as eliminating the need for the process and improving workability.

[Brief explanation of the drawing]

FIG. 21 is a perspective view of a conventional knuckle bracket, and FIG. 2 is an exploded perspective view of the bracket assembled by the method of the present invention. 15.16.17---Bracket, 18.18fl!
, 23... Holding part, 19, 19α, 20.20α, 2
4.25... Support plate, 27... Outer shell.

Claims (4)

[Claims] (1) A pair of left and right first and second brackets, and a first and second bracket.
It has three divided brackets with a third bracket held between the brackets, and the first and second brackets have a holding part that bulges outward in a curved shape and stand up above and below this holding part. The third bracket has a holding part whose upper wall is curved downward, and support plates hanging downward from both sides of this holding part, and the third bracket has a holding part whose upper wall is curved downward. a first step of embracing the outer periphery of the outer shell of the shock absorber with the holding portion; a second step of welding the lower support plates of the first and second brackets to both sides of the support plate of the third bracket; and a third step of welding together the upper support plates of the second bracket and tightening the outer shell. (2) The shock absorber mounting bracket assembling method according to claim 1, wherein the holding portions of the three brackets constitute a cylindrical portion that holds the outer periphery of the outer shell. (3) The shock absorber mounting bracket assembly method according to claim 1, wherein the hose bracket is integrally formed on the support plate of the first bracket. (4) The shock absorber mounting bracket assembly method according to claim 1, wherein each support plate is spot welded.