Vibration damping device

Patent metadata

Field	Value
Publication number	US-10837516-B2
Application number	US-201716313311-A
Country	US
Kind code	B2
Filing date	Jun 15, 2017
Priority date	Jul 4, 2016
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

The present invention is a vibration damping device ( 1, 2 ) that includes an external member ( 11, 21 ) attached to one of a vibration-generating portion and a vibration-receiving portion; a tubular member ( 40 ) attached to the other of the vibration-generating portion and the vibration-receiving portion; and an elastic body ( 30 ) which connects the external member ( 11, 21 ) and the tubular member ( 40 ). The external member ( 11, 21 ) includes a frame-like member ( 11, 21 ) having a rectangular shape when viewed from the top. In the elastic body ( 30 ), a long-side portion ( 32 a ) forming a long side of a rectangular shape when viewed from the top adheres to an inner circumferential surface of the long-side portion ( 12 a, 12 b ) of the frame-like member ( 11, 21 ), and a short-side portion ( 32 b ) forming a short side of the rectangular shape when viewed from the top comes into contact with the external member ( 11, 21 ) in a long-side direction (X) in which the long-side portion ( 12 a, 12 b ) extends when viewed from the top, in a non-adhering state.

First claim

The invention claimed is:

1. A vibration damping device, comprising:
an external member attached to one of a vibration-generating portion and a vibration-receiving portion;
a tubular member attached to the other of the vibration-generating portion and the vibration-receiving portion; and
an elastic body which connects the external member and the tubular member,
wherein the external member includes a frame member having a rectangular shape when viewed from a top,
the elastic body is formed in a rectangular parallelepiped shape having a rectangular shape when viewed from the top,
the tubular member is disposed inside the frame member when viewed from the top,
a central axis of the tubular member extends in a short-side direction in which a short-side portion of the frame member forming a short side of the rectangular shape when viewed from the top extends,
in the frame member, a lower end edge of a long-side portion forming a long side of the rectangular shape when viewed from the top is located on an inner side than an upper end edge of the long-side portion in the short-side direction, and
in the elastic body, a long-side portion forming a long side of the rectangular shape when viewed from the top adheres to an inner circumferential surface of the long-side portion of the frame member, and a short-side portion forming a short side of the rectangular shape when viewed from the top comes into contact with the external member in a long-side direction in which the long-side portion extends when viewed from the top, in a non-adhering state.

2. The vibration damping device according to claim 1 , wherein the short-side portion of the elastic body is pre-compressed in the long-side direction by the external member.

3. The vibration damping device according to claim 1 , wherein the external member includes an outer wall portion which is in contact with or in proximity to the short-side portion of the frame member from an outer side in the long-side direction, and
an opening portion penetrating in the long-side direction is formed in the short-side portion of the frame member,
a protruding portion protruding from the opening portion toward the outer side in the long-side direction is formed in the short-side portion of the elastic body, and
the protruding portion is pre-compressed to the outer wall portion in the long-side direction.

4. The vibration damping device according to claim 2 , wherein the external member includes an outer wall portion which is in contact with or in proximity to the short-side portion of the frame member from the outer side in the long-side direction,
an opening portion penetrating in the long-side direction is formed in the short-side portion of the frame member,
a protruding portion protruding from the opening portion toward the outer side in the long-side direction is formed in the short-side portion of the elastic body, and
the protruding portion is pre-compressed to the outer wall portion in the long-side direction.

Assignees

• Bridgestone Corp

Inventors

• Harada Yoichi
• Maeda Naoki

Classifications

• F16F1/373 Primary

  characterised by having a particular shape {(F16F9/58 takes precedence)} · CPC title

• F16F1/44

  loaded mainly in compression · CPC title

• F16F2228/08

  pre-stressed · CPC title

• F16F1/377

  having holes or openings ({F16F1/37} , F16F1/387 take precedence) · CPC title

• F16F2236/04

  Compression · CPC title