JPH04115974U - Connection structure of power transmission members - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain an inexpensive connection structure for power transmission members. [Structure] The head 16 of the connecting pin 15 is made hexagonal, and both corners of the upper wall end of the clevis 11 are bent to form the vertical piece 1.
4, 14 are formed, and the connecting pin 15 is prevented from rotating by making these vertical pieces 14, 14 contact the side surfaces 16a, 16a of the head 16 of the connecting pin 15.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a connection structure for power transmission members, and in detail, it uses connection pins. The invention relates to a connection structure that connects two members to each other using the same method.

0002

[Conventional technology]

Figure 3 shows the relationship between the brake booster operation rod 1 and the brake pedal 2. It shows the connected structure. Clevis 3 is fixed to the tip of operation rod 1. The end of the brake pedal 2 is fitted into the clevis 3. And A connecting pin 4 is inserted between the brake lever 3 and the brake pedal 2, and this pin 4 allows The clevis 3 and the brake pedal 2 are connected to each other. Connecting pin 4 is attached to the head It has a flange 5 and a through hole 6 at its tip. Then, insert the cotton into the through hole 6. By inserting the pin 7 and opening the tip of the pin 7, the pin 7 is engaged with the connecting pin 4. The cotter pin 7 and flange 5 prevent the connecting pin 4 from falling off.

0003 By the way, in such a connection structure, the cotter pin 7 is inserted into the hole 6 of the connection pin 4. When inserting the cotter pin 7 and opening the tip of the cotter pin 7, the connecting pin 4 should rotate freely Then, the task becomes difficult.

0004 Therefore, conventionally, as shown in Fig. 3, the clevis 3 was made of a plate with a roughly U-shaped cross section. At the same time, the flange 5 of the connecting pin 4 is chamfered, and the chamfered surface 5a is brought into contact with the bent surface 8a of the plate material 8 to prevent the connecting pin 4 from rotating. I was going.

[0005]

[Problem that the idea aims to solve]

However, if such a rotation prevention structure is adopted, the plate material 8 is required, and the parts Not only does the number of products increase, but also chamfering of the flange 5 of the connecting pin 4 is required. This will result in a considerable increase in cost.

[0006] Therefore, the purpose of this invention is to provide a connecting pin without increasing the number of parts. A power transmission part that reduces costs by using hexagonal bolt material. The objective is to provide a structure for connecting materials.

[0007]

[Means to solve the problem]

In the power transmission member connection structure of the present invention, a clevis is fixed to one member, and the clevis is fixed to one member. Fitting the other member into the clevis, and connecting the member and the above clevis with an enlarged head. Insert the pin, and then insert the cotter pin into the hole provided at the tip of the connecting pin. , the connecting pin is connected to the clevis by the cotter pin and the head of the connecting pin. In the connection structure of the power transmission member that connects the above-mentioned two members to each other by restraining the upper The head of the connecting pin is formed into a hexagonal shape, and both corners of the tip of the clevis are Bend it to match the shape of the head of the connecting pin mentioned above, and insert the bent piece into the head of the above connecting pin. The connecting pin is positioned by matching the side surface of the Ru.

[0008]

【Example】

1 and 2 show a connecting structure of power transmission members according to the present invention.

[0009] In the figure, reference numeral 10 indicates the operation of the brake booster linked to the master cylinder. Showing the ration rod. A male thread 10a is formed at the tip of this rod 10. The male screw 10a is screwed into the back wall 11a of the clevis 11.

0010 The upper wall 11b and the lower wall 11c of the clevis 11 are provided with connecting pins, respectively. Insertion holes 12 and 13 are formed. Also, the tip of the upper wall 11b of the clevis 11 At both corners, there are vertical pieces 14, 14 formed by bending each corner upward almost vertically. It is formed.

[0011] On the other hand, the connecting pin 15 inserted into the holes 12 and 13 of the clevis 11 is a hexagonal bolt. It has a hexagonal head 16 similar to the head of the cotter pin insertion hole 1 at the tip of the shaft 17. It has 8.

0012 Furthermore, a brake as another power transmission member connected to the operation rod 10 The rake pedal 19 has a connecting pin insertion hole 20 at its tip.

[0013] The operation rod 10 and brake pedal 19 are arranged as follows. and then concatenated.

[0014] First, the upper and lower walls 11 of the clevis 11 fixed to the tip of the operation rod 10 Insert the brake pedal 19 between b and 11c, and insert the hole 20 of the pedal 19 into the hole 20 of the pedal 19. Match the holes 12 and 13 of the screw 11. Then, in those holes 12, 20, 13 The shaft 17 of the connecting pin 15 is inserted, and the side surface 16a of the head 16 is inserted into the vertical piece of the clevis 11. The head 16 is housed in the vertical pieces 14, 14 in accordance with the vertical pieces 14, 14. Then concatenate The cotter pin 21 is inserted into the hole 18 of the pin 15, and then one tip of the pin 21 is inserted. 21a is bent outward to lock the cotter pin 21 to the connecting pin 15.

[0015] Among the above operations, when inserting the cotter pin 21 into the hole 18 of the connecting pin 15, When bending one tip of the cotter pin 21, attach the pin 1 to the connecting pin 15. A force acts in the direction that rotates 5. However, the force exerted on the head 16 of the connecting pin 15 Since the surface 16a contacts the vertical piece 14 of the clevis 11, it is received by the vertical piece 14. . Therefore, the connecting pin 15 is not rotated. Therefore, the above work It can be done easily.

[0016]

[Effect of the idea]

As mentioned above, in the connection structure of the power transmission member according to the present invention, the head has a hexagonal shape. A connecting pin is used. Such connecting pins manufacture hex bolts Since the material before screw processing can be used, it can be obtained at an extremely low cost. In addition, the vertical piece formed on the clevis to prevent the connecting pin from rotating is It is easy to process as it only requires bending both corners of the end of the wall, and there are only two connecting pin heads. It is secure as it is prevented from rotating at certain points.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a connection structure of a power transmission member according to the present invention.

FIG. 2 is an exploded perspective view showing the connection structure of the power transmission member according to the present invention.

FIG. 3 is a perspective view showing a conventional power transmission member connection structure.

[Explanation of symbols]

10 Operation rod 11 Clevis 11a Back wall 11b Upper wall 11c lower wall 12, 13 Connecting pin insertion hole 14 Standing piece 15 Connecting pin 16 Head 16a Side 17 Shaft part 19 Brake pedal 20 Connecting pin insertion hole 21 Cotta pin 21a Tip

Claims (1)

[Scope of utility model registration request] Claim 1: A clevis is fixed to one member, the other member is fitted into the clevis, a connecting pin with an enlarged head is inserted between the member and the clevis, and the tip of the connecting pin is inserted. In the power transmission member connection structure in which the two members are connected to each other by inserting a cotter pin into a hole provided through the hole and restraining the connection pin to the clevis by the cotter pin and the head of the connection pin, the connection pin The head of the clevis is formed into a hexagonal shape, and both corners of the tip of the clevis are bent to correspond to the shape of the head of the connecting pin, and the bent pieces match the sides of the head of the connecting pin. A connecting structure for power transmission members, characterized in that the connecting pin is positioned by: