US 12,000,452 B2Granted

Cylindrical antivibration device for motor mount

AssigneeSumitomo Riko Company Limited

InventorJunji Abe

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Abstract

Provided is a cylindrical antivibration device for a motor mount mounted between an electric motor for driving and support members in an automobile, the cylindrical antivibration device having an inner shaft member and an outer cylinder member which are coupled by a body rubber elastic element, in which surfaces of the inner shaft member and the outer cylinder member that face each other in a direction perpendicular to the shaft are continuously coupled over the entire circumference via the body rubber elastic element. On an axial end surface of the body rubber elastic element, an elastic protrusion, that protrudes outward in the axial direction and extends circumferentially in an intermediate portion between the facing surfaces of the inner shaft member and the outer cylinder member, is formed integrally with the body rubber elastic element.

Claims8

Dependent claims

A cylindrical antivibration device for a motor mount, which is configured such that an inner shaft member and an outer cylinder member are connected to each other by a body rubber elastic element and is mounted between an electric motor for driving of a vehicle and a support member, wherein

facing surfaces of the inner shaft member and the outer cylinder member in a direction perpendicular to a shaft are continuous over an entire circumference in a circumferential direction and are connected to each other by the body rubber elastic element, and
an elastic protrusion that protrudes outward in an axial direction at an intermediate portion between the facing surfaces of the inner shaft member and the outer cylinder member and extends in the circumferential direction is formed integrally with the body rubber elastic element on an end face of the body rubber elastic element in the axial direction;
wherein
a protrusion height of the elastic protrusion is set as T, and a length of the body rubber elastic element in the axial direction is set as L,
0.1≤L≤T≤L is satisfied;
wherein
a thickness dimension of the elastic protrusion is set as W, and a thickness dimension of the body rubber elastic element is set as R,
0.1 R≤W≤0.8 R is satisfied.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/226,089Filed 9 Apr 2021 · continuation
Priority: JP 2019-03700028 Feb 2019
Published: US 2021/0222753 A122 Jul 2021
Granted: 4 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

B60K 5/1225
Resilient supports: comprising resilient rings surrounding a part of the unit
F16F 15/08
Using elastic means: with rubber springs ; with springs made of rubber and metal
B60K 1/00
Arrangement or mounting of electrical propulsion units
F16F 1/3835
With a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin , i.e. bushing-type: characterised by the sleeve of…

Family

PCT/JP2020/008129Parent of this continuation · filed 27 Feb 2020
US 2021/0222753 A1Pre-grant publication · published 22 Jul 2021
US 12,000,452 B2This patent

From the US filing history. Foreign family members aren’t listed.

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