JPH0669484U - damper - Google Patents

Abstract

(57) [Abstract] [Purpose] A damper having a sleeve 2 fitted to a hub 1 and a mass body 4 connected to the sleeve 2 via an elastic body 3 and further having a sensor plate 5 separate from the sleeve 2. To reduce the number of fitting steps during the manufacturing of. [Structure] Assuming that the elastic body 3 is vulcanized and adhered to each of the sleeve 2, the mass body 4, and the sensor plate 5,
At the time of finishing the molding of the elastic body 3 during the production of the damper, an integral vulcanization molded article composed of the sleeve 2, the mass body 4, the sensor plate 5 and the elastic body 3 is molded, and the vulcanized molded article is formed into the hub 1 And put it together.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a damper that absorbs and damps vibrations generated in various rotary drive systems such as a crankshaft of an automobile engine.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 2, a bush type torsional damper in which a mass body 4 is connected to a sleeve 2 fitted to a hub 1 via an elastic body 3 and a sensor plate 5 is fitted to the hub 1. It has been known. The hub 1, the sleeve 2, and the mass body 4 are each formed in a ring shape from a predetermined metal. The elastic body 3 is formed into a ring shape by a predetermined rubber-like elastic material, and is simultaneously vulcanized and bonded to the sleeve 2 and the mass body 4 at the same time as the molding. The sensor plate 5 is formed of a magnetic material in an annular shape, and has a required number of protrusions 6 on its outer peripheral edge to function as a “crank angle detecting sensor rotor”.

[0003]

[Problems to be solved by the device]

 In the above-mentioned prior art, in manufacturing the same, a step of fitting an integrally vulcanized molded product (bush) including the sleeve 2, the elastic body 3 and the mass body 4 to the hub 1 and a sensor plate 5 different from this. There is a problem that the manufacturing is difficult because two kinds of fitting processes, that is, a process of fitting the hub 1 are required.

[0004]

[Means for Solving the Problems]

 In view of the above points, the present invention has been devised in order to solve the above-mentioned problems in the prior art. In order to achieve this object, the sleeve fitted to the hub is provided with a mass member through an elastic member. A damper having a sensor plate separate from the sleeve, wherein the elastic body is vulcanized and adhered to each of the sleeve, the mass body, and the sensor plate. To do.

[0005]

[Action]

 If the elastic body is vulcanized and adhered to each of the sleeve, the mass body and the sensor plate, the sensor plate is incorporated into the rubber vulcanization mold in addition to the sleeve and the mass body when manufacturing the damper. Therefore, when the molding of the elastic body is completed, an integrated vulcanization molded product composed of the sleeve, the mass body, the sensor plate and the elastic body is molded. Therefore, after that, a single fitting process for fitting the vulcanized molded product to the hub is performed.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, a mass body 4 is connected to a sleeve 2 fitted to a hub 1 via an elastic body 3, and the elastic body 3 extends along one axial end surface of the mass body 4. The sensor plate 5 is held on the extended portion of the elastic body 3 with only the protrusion 6 or the outer peripheral edge including the protrusion 6 exposed. The elastic body 3 made of rubber-like elastic material is vulcanized and adhered to the sleeve 2, the mass body 4 and the sensor plate 5 at the same time when the elastic body 3 is molded, and the extended portion of the elastic body 3 is used as a sensor plate. The cover portion 7 covers the main body portion of the belt 5.

When manufacturing the damper having the above-described configuration, the sensor plate 5 is incorporated into the metal mold for rubber vulcanization in addition to the sleeve 2 and the mass body 4, and the sleeve 2 is formed when the molding of the elastic body 3 is completed. Then, an integrated vulcanization molded product including the mass body 4, the sensor plate 5, and the elastic body 3 is molded. Therefore, after that, a single fitting process for fitting the vulcanized molded product to the hub 1 is performed, and the number of fitting processes can be reduced as compared with the above-mentioned conventional technique. The damper has the following features.

Since the sensor plate 5 is held by the elastic body 3 instead of the hub 1, the weight of the hub 1 does not increase. The sensor plate 5 held by the elastic body 3 swings in the circumferential direction with respect to the hub 1 together with the mass body 4 when the damper operates. Therefore, the weight of the sensor plate 5 constitutes a part of the inertial mass, and the weight of the mass body 4 can be substantially increased.

[0010]

[Effect of device]

 The present invention has the following effects. That is, assuming that the elastic body is vulcanized and adhered to each of the sleeve, the mass body, and the sensor plate, the sleeve, the mass body, the sensor plate, and the elastic body are separated from each other when the molding of the elastic body is completed at the time of manufacturing the damper. Since it is decided to form an integral vulcanized molded product, the number of subsequent fitting steps can be reduced as compared with the conventional case. That is, it is possible to make the number of steps of fitting the damper of the bush type having the sensor plate the same as the number of steps of fitting the bush type damper without the sensor plate.

[Brief description of drawings]

FIG. 1 is a half sectional view of a damper according to an embodiment of the present invention.

FIG. 2 is a half-cut sectional view of a damper according to a conventional example.

[Explanation of symbols]

 1 hub 2 sleeve 3 elastic body 4 mass body 5 sensor plate 6 protrusion 7 cover part

Claims (1)

[Scope of utility model registration request] 1. A mass plate (4) is connected to a sleeve (2) fitted to a hub (1) through an elastic body (3), and a sensor plate (separate from the sleeve (2)). 5)
A damper having the elastic body (3) vulcanized and adhered to each of the sleeve (2), the mass body (4) and the sensor plate (5).