JPH054593Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a torsional damper that absorbs and damps torsional vibrations generated in various rotating shaft systems.

[Conventional technology]

Conventionally, as an example of this type of damper, there has been known a fitting type in which a rubber ring is press-fitted between a hub and a vibration ring that are coaxially arranged.

[The problem that the idea aims to solve]

The damper uses the vibration ring as an inertial mass and utilizes the inertial mass and the elasticity of the rubber ring to absorb and damp torsional vibrations generated in the rotating shaft system to which the hub is fitted. Because the three parts of the ring are not mutually prevented from rotating or from coming off each other in the axial direction, the parts may slip in the rotational direction or shift in the axial direction during operation, and the latter in particular causes vibrations. There is a problem that the ring itself may pop out in the axial direction, or the vibration ring and rubber ring may pop out in the axial direction.

[Means to solve the problem]

In view of the above points, the present invention was devised in order to solve the problems seen in the above-mentioned prior art. A rubber ring is press-fitted, a hole is provided in the rubber ring that penetrates in the axial direction, a pin is press-fitted into the hole, and a radially expanding collar is provided at each end of the pin in the axial direction, and a part of the collar is provided. Provided is a torsional damper, characterized in that the vibration ring is located on the inner peripheral side of the outer peripheral edge of the hub, and the other part of the collar is located on the outer peripheral side of the inner peripheral edge of the vibration ring.

[Effect]

A pin is press-fitted into a hole provided in the rubber ring to increase the radial compressibility of the rubber ring, thereby increasing the frictional force of the rubber ring against the hub and the vibration ring, thereby preventing the parts from rotating relative to each other. In addition, radially expanding flanges are provided at both ends of the pin in the axial direction, with part of the flanges being positioned on the inner circumferential side of the outer circumferential edge of the hub, and the other part of the flanges being positioned on the outer circumferential side of the inner circumferential edge of the vibration ring. to prevent the parts from coming off from each other in the axial direction.

〔Example〕

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

In FIG. 1, reference numeral 1 designates an annular hub fitted to various rotating shaft systems (not shown), and the hub 1
A rubber ring 3 is press-fitted between a vibrating ring 2 and a vibrating ring 2 coaxially arranged on the outer circumferential side of the hub 1 with a predetermined press-fitting allowance. The hub 1 and the vibration ring 2 are each made of metal.

A required number of holes 3 passing through the rubber ring 3 in the axial direction
a, and a cylindrical pin 4 is press-fitted into the hole 3a. Both ends of the pin 4 in the axial direction are each expanded into an annular collar 4 that expands in the radial direction.
a and 4b, and the diameter l1 of each of the flanges 4a and 4b is set larger than the radial thickness l2 of the rubber ring 3. Also, part 4 of each guard 4a, 4b
c is located on the inner peripheral side of the outer peripheral edge of the hub 1, and the other part 4d of each collar 4a, 4b is located on the outer peripheral side of the inner peripheral edge of the vibration ring 2.
A portion 4c of each of the flanges 4a, 4b is a portion closer to the inner circumference of the damper, and the other portion 4d is a portion closer to the outer circumference of the damper.

In the damper, the pin 4 is press-fitted into the hole 3a provided in the rubber ring 3, thereby increasing the radial compression ratio of the rubber ring 3 and increasing the friction force of the rubber ring 3 against the hub 1 and the vibration ring 2. To prevent parts from rotating each other, and also to prevent parts from shifting from each other in the axial direction. Furthermore, flanges 4a and 4b are provided at both axial ends of the pin 4, respectively, and expand in the radial direction.
A part 4c of the flange 4a, 4b is located on the inner periphery side from the outer periphery of the hub 1, and the other part 4d of the collar 4a, 4b
is located closer to the outer edge of the vibrating ring 2 than to the inner circumferential edge of the vibrating ring 2, which prevents the parts from coming off in the axial direction. It can prevent it from jumping out.

FIG. 2 shows another example of the pin 4 in which a cylindrical pin 4 has a flange 4a formed at one axial end, and a cap 5 with a flange 5a is fitted into the other axial end.

[Effect of idea]

The torsional damper of the present invention has the following effects due to the above structure and operation. In other words, since the pin was press-fitted into the hole provided in the rubber ring, the radial compression ratio of the rubber ring was increased, and the frictional force of the rubber ring against the hub and the vibration ring was increased to prevent the parts from rotating against each other. To prevent parts from slipping from each other in the axial direction. In addition, radially expanding flanges are provided at both ends of the pin in the axial direction, with part of the flanges being positioned on the inner circumferential side of the outer circumferential edge of the hub, and the other part of the flanges being positioned on the outer circumferential side of the inner circumferential edge of the vibration ring. Therefore, the parts can be prevented from coming off from each other in the axial direction, and, for example, it is possible to prevent the vibrating ring alone from popping out in the axial direction or the vibration ring and the rubber ring from popping out in the axial direction.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part of a torsional damper according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a main part of a torsional damper according to another embodiment of the present invention. 1... Hub, 2... Vibration ring, 3... Rubber ring, 3a... Hole, 4... Pin, 4a, 4b, 5
a...Tsuba, 4c...Part, 4d...Other part, 5
... Cap.

Claims (1)

[Scope of utility model registration request] Hub 1 and vibration ring 2 arranged coaxially with each other
A rubber ring 3 is press-fitted between the rubber rings 3 and 3.
A hole 3a that penetrates in the axial direction is provided, a pin 4 is press-fitted into the hole 3a, and flanges 4a and 4b that expand in the radial direction are provided at both ends of the pin 4 in the axial direction, and a portion of the flanges 4a and 4b are provided. 4c is located on the inner periphery side of the outer periphery of the hub 1, and the other part 4d of the flanges 4a and 4b is located on the outer periphery side of the inner periphery of the vibration ring 2. .