Antivibration device

Patent metadata

Field	Value
Publication number	US-10228041-B2
Application number	US-201715807870-A
Country	US
Kind code	B2
Filing date	Nov 9, 2017
Priority date	Nov 17, 2016
Publication date	Mar 12, 2019
Grant date	Mar 12, 2019

Abstract

An antivibration device capable of securing a thickness dimension of a stopper rubber without changing a gap between a connecting member and a stopper wall portion. A connecting member includes a base surface and a receding surface located to recede beyond the base surface in a direction to go away from a stopper wall portion, the base surface and the receding surface face the stopper wall portion, and a stopper rubber includes an inner fitting portion at which the connecting member is internally fitted. Thus, it is possible to secure a thickness dimension of the stopper rubber without changing a gap between the connecting member and the stopper wall portion.

First claim

The invention claimed is:

1. An antivibration device comprising:
a mount body having a first attached member attached to a vibration source side, a second attached member attached to a vehicle body frame side, and an antivibration base body formed of a rubber-like elastic body and interconnecting the first attached member and the second attached member;
a connecting member fixedly fastened on one side to the first attached member and fixedly fastened on the other side to the vibration source side;
a stopper rubber mounted on the connecting member;
a retainer member retaining the second attached member;
a stopper wall portion arranged on the retainer member and disposed to face the connecting member with a predetermined gap, so that the stopper rubber is brought into abutment on the stopper wall portion when the connecting member is displaced in a bound direction; and
a displacement restriction member disposed on the retainer member and surrounding the one side of the connecting member, the displacement restriction member being formed with an insertion hole for enabling a bolt to pierce which fixedly fastens the connecting member to the first attached member, wherein
the connecting member includes a base surface and a receding surface located to recede beyond the base surface in a direction to go away from the stopper wall portion, and the base surface and the receding surface face the stopper wall surface, and
the stopper rubber includes an inner fitting portion at which the connecting member is internally fitted.

2. The antivibration device according to claim 1 , wherein the stopper rubber includes a first protrusion protruding from a surface facing the stopper wall portion and disposed at a position corresponding to the receding surface of the connecting member.

3. The antivibration device according to claim 2 , wherein
the stopper rubber includes a second protrusion protruding from the surface facing the stopper wall portion and disposed at a position corresponding to the base surface of the connecting member, and
a gap between the second protrusion and the stopper wall portion is set to be a larger dimension than a gap between the first protrusion and the stopper wall portion.

4. The antivibration device according to claim 1 , wherein the connecting member includes an extending protrusion like a raised line protruding from the receding surface and extending in a longitudinal direction of the connecting member.

5. The antivibration device according to claim 4 , wherein the extending protrusion protrudes from the base surface and extends in the longitudinal direction of the connecting member while being continued to a portion protruding from the receding surface.

6. The antivibration device according to claim 4 , wherein the stopper rubber includes a first protrusion protruding from the surface facing the stopper wall portion and disposed at a position corresponding to the receding surface of the connecting member.

7. The antivibration device according to claim 6 , wherein the first protrusion is arranged as those of a pair with the extending protrusion put between those of the pair.

8. The antivibration device according to claim 1 , wherein the connecting member includes an abutting surface which becomes a seat surface when fixedly fastened on the first attached member, and is formed into a shape which makes the abutting surface and the receding surface continue to be almost flush with each other.

9. The antivibration device according to claim 1 , wherein
the stopper rubber includes an engaging protrusion protruding toward a surface of the connecting member on a side opposite to the first attached member, and
the connecting member includes an engagement recess into which the engaging protrusion is inserted for engagement.

Assignees

• Toyo Tire & Rubber Co
• Toyota Motor Co Ltd

Inventors

• Ikawa Tatsuki
• Yoshida Nobuya

Classifications

• F16F13/085 Primary

  characterised by features of plastics springs; Attachment arrangements · CPC title

• B60K5/1208 Primary

  Resilient supports (B60K5/1241 - B60K5/1291 take precedence) · CPC title

• B60K5/1291

  Supports comprising stoppers · CPC title

• F16F15/08

  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

• F16F13/106 Primary

  Design of constituent elastomeric parts, e.g. decoupling valve elements, or of immediate abutments therefor, e.g. cages · CPC title