JPS6128891Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology belongs to the technical field of wave washers that are interposed in gaps between link connecting parts.

Therefore, this invention is a plate material that is interposed between a clevis and a lever that are rotatably engaged with each other via a pin, and the plate material is appropriately curved, and a pin or the like is attached to the plate material. This invention relates to a wave washer in which a hole for inserting the clevis and a bent part for engagement are formed. This invention relates to a wave washer in which the bent portion is set so that its own pin insertion hole matches the pin insertion hole of the clevis and lever.

<Prior Art> Generally, at the link connection portion between the lever 1 and the clevis 3 connected to the transmission rod 2, which are used in the brake transmission mechanism of an automobile as shown in FIGS. A wave washer 4 is interposed in the gap between the lever 1, the clevis 3, and the wave washer 4 to absorb play when inserted into the lever 1, the clevis 3, and the wave washer 4. A pin 5 is inserted through the lever 1, the clevis 3, and the wave washer 4 at the same time. It is inserted into each hole and is prevented from coming off by locking the tip of the pin 5 with a locking pin 6.

<Problems to be solved by the invention> However, in the conventional wave washer 4, the central part of the disc-shaped plate is curved so as to be convex, and the pin 5 is installed in the central part of the plate. Since the structure was simply a hole for insertion, when inserting the wave washer 4 into the gap between the lever 1 and the clevis 3, it was necessary to insert the wave washer 4 into the gap between them in advance. Inserting the pin 5 from the hole required extremely skilled work, and there was also the problem that the workability was poor.

In addition, a tool such as a screwdriver is used to insert the wave washer 4 between the lever 1 and the clevis 3, and the wave washer 4 is pushed into the gap using this tool. In this case, the lever 1, clevis 3, and wave washer 4 were easily damaged, which could lead to a decrease in product accuracy.

The purpose of this invention is to solve the problems of the wave washer based on the prior art described above as a technical problem, and to improve the assembly work efficiency by making the installation work easier, thereby benefiting the field of joint parts application in various industries. The purpose of this invention is to provide an excellent wave washer.

<Means/effects for solving the problems> In order to solve the above-mentioned problems, the structure of this invention, which is based on the above-mentioned claims for utility model registration, is to use a wave washer made of a curved plate material. When inserted into the gap between the clevis and lever that are engaged with each other via the pin, the three-way pin A technical measure has been taken to ensure that the insertion holes are aligned so that the wave washer can be easily and reliably inserted into the gap between the link connection between the lever and the clevis. .

<Example> Next, an example of this invention will be described below based on the drawings from FIG. 3 onwards. Incidentally, the same reference numerals are given to the same parts as in the conventional embodiment shown in FIGS. 1 and 2 for explanation.

7 is a wave washer of this invention, which is formed by suitably bending a single metal plate, and a pair of opposing plate parts 8a and 8b have a bent part 9 for engagement with the lever 1 at one edge thereof. connected via.

Each of the plate parts 8a and 8b is curved in a convex shape at the center thereof, and holes 10a and 10b are bored in the center part for inserting a pin,
In addition, a clevis 3 is provided at the other edge of the plate portions 8a and 8b.
Guide bending part 1 as a bending part for engagement with
1a and 11b are each bent outward.

Furthermore, the engaging bent portion 9 for the lever 1 and the guide bent portions 11a, 11b are arranged so that when the wave washer 7 is inserted into the connecting portion between the lever 1 and the clevis 3, the respective pin insertion holes coincide with each other. It is set.

In the above configuration, when the wave washer 7 is inserted into the gap between the lever 1 and the clevis 3, first, the wave washer 7 is inserted into the lever 1.
It is attached while being held between the

At this time, the wave washer 7 is operated by the elastic force of the wave washer 7 itself by spreading the plate parts 8a and 8b connected by the bent part 9 for engagement with the lever 1 and interposing the lever 1 between them. It is securely clamped to the lever 1.

Also, like this, move the wave washer 7 to lever 1.
When clamping the lever 1 to the hole 1 formed in the wave washer 7, the end of the lever 1 is engaged with the engaging bent portion 9 of the wave washer 7.
0a and 10b are aligned with the pin insertion hole drilled in the lever 1.

Next, the wave washer 7 clamped to the lever 1 is inserted into the opening of the clevis 3 in that state.

At this time, by inserting the wave washer 7 into the opening of the clevis 3 from the side of the bending part 9 for engagement with the lever 1, the wave washer 7 may be misaligned with respect to the lever 1, or
It can prevent it from falling off.

Then, the guide bending part 1 of the wave washer 7
A pin insertion hole is formed in the clevis 3 by engaging 1a and 11b with the opening edge of the clevis 3, and a hole 10 is formed in the wave washer 7.
a, 10b, and the pin insertion holes formed in the lever 1 are aligned, and in this state, the pin 5 is inserted into each hole, and finally, the cotter pin 6 is attached to the tip of the pin 5. By doing so, the pin 5 is prevented from coming off.

It goes without saying that the embodiments of this invention are not limited to the above-mentioned embodiments, and various other embodiments can be adopted.

<Effects of the invention> As described above, according to this invention, since the bending portions for positioning that are locked to the clevis and the lever are respectively formed, a wave washer that is placed between the clevis and the lever is interposed. When inserting the wave washer, the bending part can be locked to the lever in advance and inserted together with the lever in that state, so there is no need to use tools such as a screwdriver to insert the wave washer, making the insertion process extremely easy. Excellent effects are produced.

In addition, each bent part is set so that the pin insertion hole of the wave washer itself matches the pin insertion hole of each of the clevis and lever, so it is not necessary to insert the wave washer between the clevis and the lever. In this case, each pin insertion hole can be easily and reliably aligned by one simple action of engaging the bent portion with the clevis and lever. .

Furthermore, since each bent portion is engaged with the clevis and the lever, when the wave washer is inserted between the clevis and the lever, the wave washer will be elasticated by its own elastic force. You can also prevent it from flying off and getting lost.

Furthermore, since there is no need to forcefully insert the wave washer using a tool such as a screwdriver, there is an effect that product precision can be improved without damaging the wave washer or other parts.

[Brief explanation of the drawing]

Fig. 1 is a front view of a link connection using a conventional wave washer, Fig. 2 is a plan view, Fig. 3 and the following show embodiments of this invention, and Fig. 3 is an oblique view of the wave washer. Figure 4 is a front view of the link connection section with a wave washer interposed, and Figure 5
The figure is a plan view of a link connection section with a wave washer interposed therein. 5...pin, 3...clevis, 1...lever,
10a, 10b... hole, 9, 11a, 11b...
Bent portion, 7... Wave washer, 9... Bent part for engagement with clevis, 11a, 11b... Bent part for engagement with lever.

Claims (1)

[Scope of utility model registration request] In a wave washer, which is a curved plate interposed between a clevis and a lever that are engaged through a pin, and has a hole for inserting the pin and a bent part for engagement. , that a bent part for engaging the clevis and a bent part for engaging the lever are formed in the portions where the pin insertion hole corresponds to the pin insertion hole of the clevis and the pin insertion hole of the lever, respectively. Features a wave washer.