# US 9,518,631 B2 · Vibration damping device

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- Number: US 9,518,631 B2
- Document ID: US9518631B2
- Status: Granted
- Kind: B2
- Application number: 14/729,241
- Filed: 2015-06-03
- Published: 2015-12-31
- Granted: 2016-12-13
- Earliest claimed: 2014-06-27
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Yu Miyahara; Atsushi Honda; Husahiro Tsukano; Morihiro Matsumoto; Tadashi Sekiguchi; Shuhei Horita
- Web page: https://patentgrep.com/patent/US9518631B2

## CPC

- F16F 15/145: {Masses mounted with play with respect to driving means thus enabling free movement over a limited range}
- F16F 2230/30: Sealing arrangements
- F16H 2045/0221: {with damping means}
- F16H 2045/0263: {the damper comprising a pendulum}
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16H: GEARING

## Abstract

A vibration damping device in which a covering member can be fixed firmly to a rotary member by a rivet is provided. In the vibration damping device, a pendulum mass 14 is held in a rotary member 15, and a casing 17 is fixed to the rotary member 15 by a rivet 20. The rivet 20 comprises a head 20a, a first shaft 20b and a second shaft 20c. The first shaft 20a penetrates through a first casing member 18, the rotary member 15 and the second casing member 19, and a tail thereof is expanded to fasten those members. The second shaft 20c penetrates through a driven member, and a tail thereof is expanded to fasten the driven member to the rotary member 15.

## Claims

### Claim 1

A vibration damping device, comprising:
a pendulum mass that is held in a rotary member while being allowed to be oscillated by torque pulses applied to the rotary member,
a casing including a first casing member and a second casing member individually fixed to each surface of the rotary member by a rivet to cover the pendulum mass liquid-tightly; and
a predetermined member that is also fixed to the rotary member by the rivet in a manner to transmit torque therebetween;
wherein the rivet comprises a head, a first shaft axially protruding from one side of the head, and a second shaft axially protruding from the other side of the head in an opposite direction;
wherein the first shaft penetrates through the first casing member, the rotary member and the second casing member overlapping one another, and a tail of the first shaft is expanded to fasten the first and second casing members and the rotary member together; and
wherein the second shaft penetrates through the predetermined member, and a tail of the second shaft is expanded to fasten the predetermined member to said another side of the head of the rivet.

### Claim 2 (depends on 1)

The vibration damping device as claimed in claim 1, wherein a compressive strength of the first shaft is increased to be higher than that of the second shaft.