Active mount

Patent metadata

Field	Value
Publication number	US-9709123-B2
Application number	US-201514863116-A
Country	US
Kind code	B2
Filing date	Sep 23, 2015
Priority date	May 6, 2015
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

An active mount in which a nozzle plate is mounted between an insulator and a diaphragm to divide an inner space into an upper liquid chamber and a lower liquid chamber, and an encapsulated hydraulic liquid flows from the nozzle plate through a first flow path depending on a change in fastened state of the liquid chambers may include the nozzle plate having a second flow path and allowing the upper liquid chamber and the lower liquid chamber to be in communication with each other, the diaphragm made of a material having elasticity and coupled to a lower portion of the nozzle plate to form the lower liquid chamber, the diaphragm having an inflection portion, and a yoke including a body portion having an upper end in close contact with a lower portion of the inflection portion, and a rod portion coupled to a lower portion of the body portion.

First claim

What is claimed is:

1. An active mount in which a nozzle plate is mounted between an insulator and a diaphragm to divide an inner space into an upper liquid chamber and a lower liquid chamber, and an encapsulated hydraulic liquid flows from the nozzle plate through a first flow path depending on a change in fastened state of the liquid chambers, the active mount comprising:
the nozzle plate having a second flow path that is spaced apart from the first flow path and allowing the upper liquid chamber and the lower liquid chamber to be in communication with each other;
the diaphragm made of a material having elasticity and coupled to a lower portion of the nozzle plate to form the lower liquid chamber, the diaphragm having an inflection portion that is disposed to be in direct contact with a lower surface of the nozzle plate; and
a yoke including a body portion that has a cup shape and has an upper end in close contact with a lower portion of the inflection portion, and a rod portion that is coupled to a lower portion of the body portion, the yoke configured to be magnetized when electric power is applied to a coil that is disposed adjacent to the yoke,
wherein the lower liquid chamber is divided into a first lower liquid chamber which is disposed outside the inflection portion and in communication with the first flow path, and a second lower liquid chamber which is disposed inside the inflection portion and in communication with the second flow path, and metallic scraps are coupled to a part portion of the diaphragm which is defined as an inside portion of the inflection portion so as to form the second lower liquid chamber, such that when the yoke is magnetized, elastic behavior of the part portion is restricted.

2. The active mount of claim 1 , wherein the scraps are mounted to and included in the part portion, and when the yoke is magnetized, the part portion is configured to elastically expand so as to come into close contact with an inner circumferential surface of the body portion, such that the elastic behavior is restricted.

3. The active mount of claim 2 , wherein a protruding surface, which is convexly bent upward, is formed on a bottom surface of the part portion.

4. The active mount of claim 2 , wherein a venting hole is formed in the body portion so that air between the part portion and the body portion is discharged when the part portion elastically expands.

5. The active mount of claim 4 , wherein a protruding surface, which is convexly bent upward, is formed on a bottom surface of the part portion.

6. The active mount of claim 5 , wherein the scraps are disposed to form multiple rows on the bottom surface and the outer circumferential surface of the part portion.

7. The active mount of claim 1 , wherein a protruding surface, which is convexly bent upward, is formed on a bottom surface of the part portion.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Kim Seung-Won

Classifications

• F16F13/102

  characterised by features of flexible walls of equilibration chambers; decoupling or self-tuning means · CPC title

• F16F13/266 Primary

  comprising means for acting dynamically on the walls bounding a passage between working and equilibration chambers · CPC title