Vibration Damping Member

Patent metadata

Field	Value
Publication number	US-2022042571-A1
Application number	US-202117452157-A
Country	US
Kind code	A1
Filing date	Oct 25, 2021
Priority date	Apr 26, 2019
Publication date	Feb 10, 2022
Grant date	—

Abstract

A vibration damping member mounted to an inside of a housing of an acoustic device includes a first member, a second member, and a third member. The first member and the second member are connected through the third member. The third member has a lower elastic modulus than the first member and the second member.

First claim

What is claimed is:

1 . A vibration damping member mounted to an inside of a housing of an acoustic device, comprising:
a first member; a second member; and a third member wherein
the first member and the second member are connected through the third member, and
the third member has a lower elastic modulus than the first member and the second member.

2 . The vibration damping member according to claim 1 , wherein
the first member and the second member respectively include a first facing area and a second facing area that face each other, and the third member is disposed at a gap between the first facing area and the second facing area.

3 . The vibration damping member according to claim 1 ,
wherein the third member is a viscoelastic body.

4 . The vibration damping member according to claim 1 ,
wherein an overall-length adjusting portion adjusting an overall length of the vibration damping member is provided at least at one of the first member and the second member.

5 . The vibration damping member according to claim 1 , wherein
the first member and the second member have a tubular shape, the first member has a hollow area into which the second member is inserted, and the third member is sandwiched between an inner wall surface of first member in the hollow area and an outer wall surface of the second member inserted into the hollow area.

6 . The vibration damping member according to claim 5 , wherein an opening is provided at least at one of the first member and the second member.

7 . The vibration damping member according to claim 1 , wherein
the first member and the second member have a plate shape, and the third member is sandwiched between a plate surface of the first member and a plate surface of the second member.

8 . The vibration damping member according to claim 1 , wherein
the first member is in contact with a first surface inside the housing, and the second member is in contact with a second surface inside the housing different from the one surface inside the housing.

9 . The vibration damping member according to claim 8 , wherein
the first member and the second member are respectively in contact with the first surface and the second surface that face each other inside the housing.

10 . An acoustic device, comprising:
a vibration damping member including a first member, a second member, and a third member, wherein
the first member and the second member are connected through the third member, the third member has a lower elastic modulus than the first member and the second member, and wherein the first member is in contact with a first surface inside the housing and the second member is in contact with a second surface inside the housing different from the first surface.

11 . The acoustic device according to claim 10 , wherein
the first member and the second member are respectively in contact with the first surface and the second surface that face each other inside the housing.

12 . An acoustic device, comprising:
a housing; a speaker unit fixed to the housing; and a vibration damping member mounted to an inside of the housing, wherein
the housing includes a first wall and a second wall different from the first wall which are walls defining the inside of the housing, and
the vibration damping member includes a first member being in contact with the first wall, a second member being in contact with the second wall, and a third member connecting the first member and the second member and having a lower elastic modulus than the first member and the second member.

13 . The acoustic device according to claim 12 ,
wherein the first wall and the second wall face each other.

14 . The acoustic device according to claim 12 ,
wherein the third member connects the first member and the second member so as to allow a distance between the first wall with which the first member is in contact and the second wall with which the second member is in contact to change when the speaker unit operates.

15 . The acoustic device according to 12 ,
wherein the third member is a viscoelastic body.

16 . The acoustic device according to 12 , wherein
the first member and the second member have a tubular shape, the first member has a hollow area into which the second member is inserted, and the third member is sandwiched between an inner wall surface of the first member in the hollow area and an outer wall surface of the second member inserted into the hollow area.

Assignees

• Yamaha Corp

Inventors

• Miki Akira
• Okada Yuko
• Morita Koichi

Classifications

• F16F15/08 Primary

  with rubber springs {(grommet- or bushing-type resilient mountings F16F1/3732, F16F1/38); with springs made of rubber and metal (arrangement of internal-combustion or jet-propulsion units B60K5/12; mounting of propulsion plants on vessels B63H21/30; mounting of vehicle drivers' cabs B62D33/0604)} · CPC title

• H04R1/288

  for loudspeaker transducers · CPC title

• G10K11/04

  Acoustic filters {; Acoustic resonators} · CPC title

• G10K11/002 Primary

  Devices for damping, suppressing, obstructing or conducting sound in acoustic devices (G10K1/06 - G10K1/10 take precedence; for electro-mechanical transducers for communication H04R3/002) · CPC title

• G10K11/162

  Selection of materials · CPC title