Hydraulic antivibrating device

Patent metadata

Field	Value
Publication number	US-10260592-B2
Application number	US-201715660475-A
Country	US
Kind code	B2
Filing date	Jul 26, 2017
Priority date	Jul 26, 2016
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

Vibration damping device comprising two armatures and an elastomer body that connects armatures together and which delimits a first hydraulic chamber that communicates with a second hydraulic chamber that can be deformed by a constricted passage. A sealed box, integral with the second armature, contains a control device and an actuator. The box is sealed and comprises at least one flexible wall separating from the atmosphere, the interior space of the box.

First claim

The invention claimed is:

1. A hydraulic vibration damping device intended to be inserted for the purposes of damping between first and second rigid elements, with this vibration damping device comprising:
first and second armatures intended to be fixed to the two rigid elements to be joined,
an elastomer body that connects first and second armatures together and which delimits at least partially a first hydraulic chamber,
a second hydraulic chamber which is delimited by a deformable wall and which communicates with the first hydraulic chamber by the intermediary of a constricted passage, with the first and second hydraulic chambers and with the constricted passage forming a hydraulic circuit filled with liquid,
a closed box integral with the second armature and delimiting an interior space separated from the second hydraulic chamber by said deformable wall,
and an electrical system comprising an electronic control device, at least one sensor and an electrical actuator controlled by the control device according to information received from the sensor, said actuator being suitable for controlling the vibration damping behaviour of the vibration damping device, and with at least the control device being arranged in the interior space of said box,
wherein the box is sealed and comprises at least one flexible wall separating from the atmosphere, the interior space of said box, said flexible wall being in permanent contact with the atmosphere.

2. The vibration damping device according to claim 1 , wherein the actuator is also contained in the interior space of the box.

3. The vibration damping device according to claim 1 , wherein the sensor is also contained in the interior space of the box.

4. The vibration damping device as claimed in claim 1 , wherein the electrical system further comprises a device for generating electric current that comprises on the one hand, a microturbine rotatably mounted in the constricted passage and on the other hand, a generator coupled to the microturbine in order to produce an electric current when the microturbine is rotating, with at least the generator being contained in the interior space of the box.

5. The vibration damping device according to claim 4 , wherein the electrical system further comprises:
a converter adapted for converting into direct current an electric current produced by the generator,
a device for storing electrical energy supplied by the converter and supplying the control device,
the converter and the device for storing electrical energy being arranged in the interior space of the box.

6. The vibration damping device as claimed in claim 1 , wherein said sensor is a vibration sensor.

7. The vibration damping device as claimed in claim 1 , wherein said actuator is adapted to selectively block or leave free a mobile wall which partially delimits the first hydraulic chamber.

8. The vibration damping device according to claim 7 , wherein said mobile wall is flexible and said vibration damping device comprises a pneumatic chamber which is delimited towards the actuator by a bottom provided with an orifice and which is separated from the first hydraulic chamber by said mobile wall,
the actuator comprising an actuating member mobile between first and second positions, said actuating member being elastically solicited by a spring towards the first position, with the actuating member being adapted for closing off said orifice under the bias of the spring when said actuating member is in the first position, with the spring being adapted to allow the actuating member to temporarily open said orifice in case of excessive pressure in the pneumatic chamber.

Assignees

• Hutchinson

Inventors

• Lemaire Gabriel
• Bellamy Alain

Classifications

• F02B1/04

  with fuel-air mixture admission into cylinder · CPC title

• F16F13/105

  characterised by features of partitions between two working chambers · CPC title

• F16F13/264 Primary

  comprising means for acting dynamically on the walls bounding a working chamber · CPC title

• B60G13/14

  having dampers accumulating utilisable energy, e.g. compressing air {(fluid springs with an accumulator B60G11/30)} · CPC title

• H02K7/1823

  structurally associated with turbines or similar engines · CPC title