JPH0587337U - Flexible joint - Google Patents

Abstract

(57) [Summary] [Structure] The disk-shaped main body 10 is made of resin. Body 10
A penetrating portion 12 for disposing the first and second connecting members is provided on the side surface of the. Each connecting member 13 and 14 has a main body 10
It projects long on one side and the other side. The connecting members 13 and 14 are elastically connected to the main body 10 by elastic members 15 and 16 that are directly vulcanized and bonded to the main body 10. [Effect] The main body 10 is formed with a molding die M1 (M
2), the first connecting member 13 and the second connecting member 1
4 are projected in the directions corresponding to each other by the molding dies M1 (M2), and in this state, the elastic members 15 and 16 are vulcanized and bonded to the gap between the main body 10 and the connecting members 13 and 14 to manufacture the product. can do. Therefore, the manufacturing process is simplified and the manufacturing cost is reduced. Further, since the main body 10 is made of resin, the weight can be reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a flexible joint, and more particularly, to a flexible joint using an elastic body such as rubber as a torque transmission element.

[0002]

[Prior Art]

 Generally, this type of flexible joint is for connecting a drive shaft and a driven shaft arranged on the same axis when transmitting torque on the engine side to a driven member side such as a propeller shaft. A structure having the above is proposed (Japanese Utility Model Application No. 58-21818, etc.).

For example, in a prior art example shown in FIG. 2, a substantially disk-shaped main body 51 is formed of an aluminum molded product, and even-numbered fitting holes 52 are provided at a plurality of locations on the same circumference of the main body 51. The first elastic connecting body 53 and the second elastic connecting body 54 are alternately fitted and fixed in the joint hole 52. Each elastic coupling body 53, 54 is first and second outer diameter bushes 53a, 54a which are press-fitted and fixed in the fitting hole 52, and the first and second outer diameter bushes 53a, 54a are arranged concentrically. , The second inner diameter bushes 53b, 54b and the rubber first and second elastic bodies 53c, 54c vulcanized and bonded between the inner diameter bushes 53b, 54b and the outer diameter bushes 53a, 54a. I have it.

Here, as shown in FIG. 2B, one of the first inner diameter bush 53b and the second inner diameter bush 54b is provided on one side of the main body 51 in order to facilitate connection with the corresponding shafts. Of the main body 51 and the other side of the main body 51.

[0005]

[Problems to be solved by the device]

 In the above-described prior art example shown in FIG. 2, since the outer diameter bushes 53a, 54a of the first and second elastic connecting bodies 53, 54 are press-fitted and fixed in the fitting hole 52 of the main body 51, first, The assembly forming the elastic connecting members 53 and 54 is manufactured, and then the elastic connecting members 53 (54) are manually operated in order to make the protruding direction of one of the first and second inner diameter bushes 53b and 54b different. It was necessary to incorporate the above-mentioned assembly into the main body 51 while changing the direction for each.

As a result, the process for assembling the elastic connectors 53 and 54 into the main body 51 becomes complicated and the cost becomes high. Further, since the main body 51 made of aluminum is adopted, the product becomes heavy, which is not preferable in practical use. The present invention has been made in view of the above problems, and an object thereof is to provide a flexible joint that can simplify the manufacturing process and can reduce the weight of a product.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the flexible joint of the present invention has a plurality of penetrating portions formed on the side surface, a resin-made main body formed in a disc shape, and a state in which the flexible joint is long-projected to one side surface of the main body. The first connecting member, which is disposed in a part of the penetrating part and is coupled to one of the rotating shafts, and the other connecting part, which is disposed in the remaining penetrating part while projecting to the other side surface of the main body for a long time. A second connecting member connected to the main body and an elastic member directly vulcanized and bonded to the penetrating portion and elastically connecting the first and second connecting members to the main body. I am trying.

[0008]

[Action]

 According to the flexible joint configured as described above, since the flexible joint is directly vulcanized and bonded to the penetrating portion and elastically connects the first and second connecting members to the main body, for example, pre-molding is performed. The molded main body is placed in a molding die, and the first connecting member and the second connecting member are projected in the directions corresponding to each other by the molding die. In this state, an elastic member is placed in the gap between the main body and the connecting member. Products can be manufactured simply by vulcanizing and bonding. Further, since the main body is made of a resin molded product, the main body can be manufactured by a comparatively inexpensive resin molding method.

[0009]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1A and 1B are views showing a flexible joint J according to an embodiment of the present invention. FIG. 1A is a side view and FIG. 1B is a sectional view taken along the line IB-IB of FIG. Referring to FIG. 1, the flexible joint J of this embodiment includes a disc-shaped main body 10. The main body 10 is a resin molded product made of an annular phenol resin, and further contains 50% by weight of reinforced glass fiber in this embodiment. An insertion hole 11 is formed in the center of the main body 10. The insertion hole 11 is for allowing the centering portions of the drive-side and driven-side rotating shafts (not shown) to pass through the center of the main body 10.

On the same circumference of the side surface of the main body 10, an even number of through holes 12 are formed as through portions. Each through hole 12 is for inserting first and second connecting members 13 and 14, which will be described later in detail. In this embodiment, the outer peripheral surface of the main body 10 and the inner and outer peripheral surfaces of the holes 11 and 12 have tapered surfaces 10a and 10b having a predetermined inclination angle .theta. 10c are provided.

The first connecting member 13 is for connecting to a rotary shaft facing one side surface side (right side in FIG. 1B) of the main body 10, and the second connecting member 14 is , The other side surface (the left side in FIG. 1B) is connected to the rotating shaft facing the side surface. Both of the connecting members 13 and 14 are formed of a bush made of metal, and the first connecting member 13 is projected to one side surface side of the main body 10 for a long time, and the second connecting member 14 is , Is projected to the other side of the main body 10 for a long time.

Further, the two connecting members 13 and 14 are made the same as the through holes 12 of the main body 10 by the rubber first and second elastic bodies 15 and 16 which are directly vulcanized and bonded to the through holes 12 of the main body 10. It is connected to the heart. Both elastic bodies 15 and 16 are for elastically transmitting and receiving power between the corresponding connecting members 13 and 14 and the main body 10 by elastically expanding and contracting by a predetermined amount. In order to increase the amount of bending of the main body 10 in the circumferential direction, a pair of slits 15a and 16a extending in parallel with the centers of the connecting members 13 and 14 sandwiching the centers of the connecting members 13 and 14 respectively correspond to the connecting members 13 and 14, respectively. It is shaped so as to extend parallel to the diameter of the body 10 passing through the center of 14.

In order to manufacture the flexible joint J of this embodiment, first, the main body 10 is molded into an annular disc shape having the holes 11 and 12 by a known resin molding method. Next, the main body 10 is placed on one of a pair of molds M1 and M2 that can be separated from each other (molding mold M1 in the embodiment), and the connecting members 13 and 14 are formed in the through holes 12 of the main body 10, respectively. A bushing member is installed. Here, the mold cavity surfaces 1a, 1b, 2a, 2b having different depths alternately viewed in the circumferential direction are provided at the portions of the respective molding dies M1, M2 facing the connecting members 13, 14. ing. Therefore, the preformed main body 10 is arranged on one of the molding dies M1 (M2), and the bush members are respectively attached to the corresponding mold cavity surfaces 1a (2a), 1b (2b) of the molding dies M1 (M2). The bush member forming the first connecting member 13 is projected to one side surface side of the main body 10 and the bush member forming the second connecting member 14 is set to the other side surface side of the main body 10 by being placed on the other side surface. Stick out. Then, in that state, the flexible joint J can be manufactured by only filling the space between the bush members (coupling members 13, 14) and the through hole 12 with the rubber material and performing the well-known vulcanization adhesion.

As described above, according to the flexible joint J of this embodiment, the flexible joint J is directly vulcanized and bonded to the through hole 12 to elastically connect the first and second connecting members 13 and 14 to the main body 10. Since the elastic member 15 is provided, for example, the preformed main body 10 is placed in the molding die M1 (M2) for forming the elastic member, and the first connecting member 13 and the second connecting member 14 are respectively provided as described above. By placing on the corresponding mold cavity surfaces 1a (2a) and 1b (2b) of the molding die M1 (M2), the molding dies M1 (M2) are projected in the directions corresponding to each other, and in this state, in the gap between the main body 10 and the connecting members 13 and 14. The product can be manufactured only by vulcanizing and bonding the elastic members 15 and 16. Therefore, according to the present embodiment, it is necessary to separately manufacture an assembly for forming the connecting members 13 and 14 or manually change the directions of the first connecting member 13 and the second connecting member 14. As a result, the manufacturing process of the product can be simplified and the manufacturing cost can be reduced. Moreover, since the main body 10 is made of a resin molded product, the main body 10 can be manufactured by a relatively inexpensive resin molding method. Therefore, according to the present embodiment, also from this point, there is an advantage that the cost of the product can be reduced.

Moreover, since the main body 10 and the first and second connecting members 13 and 14 are connected by the elastic members 15 and 16, the driving-side power transmitted to one connecting member 13 (14) is , Is smoothly transmitted to the main body 10 while being buffered by the corresponding elastic member 15 (16), and further transmitted from the main body 10 to the corresponding connecting member 14 (13) via the other elastic member 16 (15). It

Since the main body 10 is made of a resin molded product, the weight of the entire device can be reduced. It should be noted that the above-described embodiment is merely a preferred specific example of the present invention. For example, instead of the through hole 12, a notch that opens outward in the radial direction of the main body 10 may be adopted as the through portion. It goes without saying that various design changes can be made without changing the gist of the present invention.

[0017]

[Effect of the device]

 As described above, according to the flexible joint of the present invention, for example, a preformed main body is arranged in a molding die, and the first connecting member and the second connecting member are disposed in directions corresponding to each other by the forming die. Since the product can be manufactured by simply vulcanizing and adhering the elastic member in the gap between the main body and the connecting member in this state, the assembly for forming each connecting member can be manufactured separately or by hand. As a result of eliminating the need to change the direction of the first connecting member and the second connecting member in the work, the product manufacturing process can be simplified and the manufacturing cost can be reduced. .. Further, since the main body can be manufactured by a relatively inexpensive resin molding method, there is an advantage that the cost of the product can be reduced also from this point.

Furthermore, since the main body is a resin molded product, the weight of the product can be reduced.

[Brief description of drawings]

1A and 1B are views showing a flexible joint according to an embodiment of the present invention, in which FIG. 1A is a side view and FIG.
FIG. 6 is a sectional view taken along line IB-IB of FIG.

2A and 2B are views showing a flexible joint in a prior art example, in which FIG. 2A is a side view and FIG. 2B is IIB- in FIG.
It is a IIB arrow sectional view.

[Explanation of symbols]

 J flexible joint 10 main body 13 first connecting member 14 second connecting member 15 first elastic member 16 second elastic member

Claims (1)

[Scope of utility model registration request] 1. A resin-made main body having a plurality of penetrating portions formed on its side surface, and a disc-shaped resin main body. A first connecting member connected to one of the rotating shafts, and a second connecting member arranged in the remaining penetrating portion in a state of protruding to the other side surface of the main body and connected to the other rotating shaft. A flexible joint, comprising: an elastic member that is directly vulcanized and bonded to the penetrating portion and elastically connects the first and second connecting members to the main body.