Vibration damping device

Patent metadata

Field	Value
Publication number	US-2016116018-A1
Application number	US-201414443218-A
Country	US
Kind code	A1
Filing date	Jun 2, 2014
Priority date	Jul 16, 2013
Publication date	Apr 28, 2016
Grant date	—

Abstract

Provided is a vibration damping device having a novel structure and that can have a greatly increased load strength resistance without a concomitant increase in the number of components or size at a stopper mechanism. The structure is such that first and second stopper portions having a hanging plate part and a dip part are provided to a pair of opposing sides of a stopper plate of a vibration damping device, whereas a pair of side plate portions extending between the first and second stopper portions are provided to the other pair of opposing sides of the stopper plate, and openings at both sides of the first and second stopper portions are closed by the pair of side plate portions.

First claim

1 . A vibration damping device comprising:
first and second mounting plate members configured to attach to respective components to be connected in a vibration damping manner while being placed opposite to each other; a main rubber elastic body connecting the first and second mounting plate members; a stopper plate of approximately rectangular shape being overlapped and attached on the first mounting plate member; a butting portions provided to the second mounting plate member; first and second stopper portions being provided to a pair of opposing sides of the stopper plate so as to limit an amount of relative displacement between the first and second mounting plate members by abutment against the respective abutting portions; a hanging plate part that extends from each of the first and second stopper portions provided to the respective opposing sides of the stopper plate toward the second mounting plate member; a dip part sloping inward from a tip of the hanging plate part; and a pair of side plate portions each protruding toward the second mounting plate member being provided to another pair of opposing sides of the stopper plate so as to extend between the first and second stopper portions and close an opening to each side of the first and second stopper portions.

2 . The vibration damping device according to claim 1 , wherein a portion of the second stopper portion of the stopper plate including the dip part comprises a separate component attached later.

3 . The vibration damping device according to claim 1 , further comprising
a mounting bolt protruding outward being provided to the first mounting plate member; a bolt insertion hole for insertion of the mounting bolt being provided to the stopper plate; a first positioning protrusion and a second positioning protrusion with a protrusion height greater than that of the first positioning protrusion being provided to the first mounting plate member so as to be located on both sides of the mounting bolt in a direction of opposition of the first and second stopper portions of the stopper plate so that the first positioning protrusion positions the stopper plate with respect to the first mounting plate member while the second positioning protrusion positions the first mounting plate member with respect to one of the components to be connected in a vibration damping manner; and first and second insertion holes being provided to the stopper plate on both sides of the bolt insertion hole at locations corresponding to the respective first and second positioning protrusions, wherein the first insertion hole fits the first positioning protrusion about an entire circumference, and the bolt insertion hole and the second insertion hole each have an elongated shape extending in a direction of opposition of the first and second stopper portions of the stopper plate so that the stopper plate is allowed to tilt with respect to the first mounting plate member in a direction of lifting its side on the first insertion hole while the second positioning protrusion is positioned with respect to the second insertion hole in a direction of opposition of the pair of side plate portions of the stopper plate.

4 . The vibration damping device according to claim 3 , wherein the mounting bolt is positioned with respect to the bolt insertion hole in the direction of opposition of the pair of side plate portions of the stopper plate.

5 . The vibration damping device according to claim 3 , wherein at least one of the first positioning protrusion and the second positioning protrusion has a tapered shape where a cross sectional area of its tip portion is smaller than that of its base portion.

6 . The vibration damping device according to claim 3 , wherein the protrusion height of the first positioning protrusion is set at a level not protruding beyond an outer face of the stopper plate.

7 . The vibration damping device according to claim 1 , wherein the vibration damping device is configured to be located diagonally below an engine of a power unit on each side across the engine and arranged obliquely with the first and second stopper portions located one above another in a diagonal direction so as to constitute an engine mount.

Assignees

• Sumitomo Riko Co Ltd
• Toyota Motor Co Ltd

Inventors

• Yoshii Noriaki
• Mizukawa Hiroki
• Shimizu Yorishige
• Ichikawa Hiroyuki
• Katagiri Katsuhiko
• Komura Shinji

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

• B60K5/1208

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

• B60K5/1216

  characterised by the location of the supports relative to the motor or to each other (B60K5/1225 takes precedence) · CPC title

• F16F1/371

  characterised by inserts or auxiliary extension {or exterior} elements, e.g. for rigidification (F16F1/387 takes precedence; {non-embedded reinforcing elements for flexibly-walled air springs F16F9/0436}) · CPC title

• F16F1/44 Primary

  loaded mainly in compression · CPC title