Hydraulic clutch device

Patent metadata

Field	Value
Publication number	US-10890217-B2
Application number	US-201815915479-A
Country	US
Kind code	B2
Filing date	Mar 8, 2018
Priority date	Mar 10, 2017
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A hydraulic clutch device comprises an oil pump ( 7 ), a pressure regulating valve ( 8 ) for pressure-regulating oil discharged from the oil pump, and a hydraulic clutch ( 5 ) arranged in a power transmission route through which motive power is transmitted along a rotation shaft ( 4 ) from the power transmission part ( 2, 3 ), and engaged by the oil pressure-regulated by the pressure regulating valve. The pressure regulating valve is located on a downstream side in an oil flowing direction of the hydraulic clutch and arranged in the vicinity of an opposite side to the power transmission part in the axial direction of the rotation shaft with respect to the hydraulic clutch. With this configuration, it is possible to dispense with a pressure regulating valve arranged between a power transmission part and a hydraulic clutch and a valve body integrally provided with the pressure regulating valve in a conventional hydraulic clutch device.

First claim

The invention claimed is:

1. A hydraulic clutch device comprising:
a hydraulic clutch arranged in a power transmission route which comprises a power transmission part and an output rotation shaft rotatable around an axial direction thereof by motive power transmitted to the output rotation shaft from the power transmission part via the hydraulic clutch;
an oil pump configured to supply oil to the hydraulic clutch;
an oil pressure sensor configured to detect an oil pressure of the oil fed to the hydraulic clutch;
a pressure regulating valve configured to pressure-regulate the oil supplied from the oil pump such that the hydraulic clutch is engageable by the oil pressure-regulated by the pressure regulating valve; and
an oil chamber having an oil which is supplied by the oil pump and regulated by the pressure regulating valve such that the hydraulic clutch is engageable by the pressure-regulated oil,
wherein the pressure regulating valve and the oil pressure sensor are located on a downstream side of the hydraulic clutch in an oil flowing direction and arranged in a vicinity of the hydraulic clutch at an opposite side of the power transmission part with respect to the hydraulic clutch in the axial direction of the output rotation shaft,
the oil chamber has a substantially circular and annular shape when viewed from the axial direction of the output rotation shaft, and
the pressure regulating valve and the oil pressure sensor are located on a downstream side of the oil chamber in the oil flowing direction and arranged at an opposite side of the power transmission part with respect to the oil chamber in the axial direction of the output rotation shaft.

2. The hydraulic clutch device according to claim 1 , further comprising:
a casing configured to house the hydraulic clutch therein the pressure regulating valve being mounted in the casing; and
a protection member which covers at least a part of the pressure regulating valve exposed from the casing.

3. The hydraulic clutch device according to claim 1 , wherein the pressure regulating valve is arranged above the middle in the height direction of the hydraulic clutch, and the oil pressure sensor is arranged below the middle in the height direction of the hydraulic clutch.

4. The hydraulic clutch device according to claim 1 , further comprising:
a casing configured to house the hydraulic clutch therein; and
a protection member which covers at least a part of the pressure regulating valve exposed from the casing,
wherein the oil pressure sensor is mounted on the casing, and the protection member covers at least a part of the oil pressure sensor exposed from the casing.

5. The hydraulic clutch device according to claim 1 ,
wherein the pressure regulating valve has a main body part and a connector which is integrally provided with a side surface of the main body part so as to connect a wiring member to the main body part, and
wherein the connector of the pressure regulating valve is arranged in an obliquely upward position inclined to the side closer to the hydraulic clutch with respect to a position right above the main body part.

6. The hydraulic clutch device according to claim 1 ,
wherein the pressure regulating valve has a main body part and a connector which is integrally provided on a side surface of the main body part so as to connect a wiring member to the main body part, and the oil pressure sensor has a connector which connects the wiring member, and
wherein the connector of the pressure regulating valve and the connector of the oil pressure sensor are configured such that each of the wiring members connected to the respective connectors extends in substantially the same direction in a state where the pressure regulating valve and the oil pressure sensor are mounted in a casing which is configured to house the hydraulic clutch therein.

7. The hydraulic clutch device according to claim 1 , comprising:
a pair of the hydraulic clutches each of which is arranged on each of outsides in the axial direction of the output rotation shaft with respect to the power transmission part; and
a pair of the pressure regulating valves each of which is arranged on the outside of each of the pair of the hydraulic clutches.

8. The hydraulic clutch device according to claim 1 , wherein the pressure regulating valve is arranged above a middle position in a height direction of the hydraulic clutch, and the oil pressure sensor is arranged below the middle position in the height direction of the hydraulic clutch.

9. The hydraulic clutch device according to claim 1 , further comprising:
a casing configured to house the hydraulic clutch therein, the pressure regulating valve being mounted in the casing; and
a protection member which covers at least a part of the pressure regulating valve exposed from the casing.

10. The hydraulic clutch device according to claim 1 ,
wherein the pressure regulating valve has a main body part and a connector which is integrally provided with a side surface of the main body part so as to connect a wiring member to the main body part, and
wherein the connector of the pressure regulating valve is arranged in an obliquely upward position inclined to the side closer to the hydraulic clutch with respect to a position right above the main body part.

11. The hydraulic clutch device according to claim 9 ,
wherein the pressure regulating valve has a main body part and a connector which is integrally provided on a side surface of the main body part so as to connect a wiring member to the main body part, and the oil pressure sensor has a connector which connects the wiring member, and
wherein the connector of the pressure regulating valve and the connector of the oil pressure sensor are configured such that each of the wiring members connected to the respective connectors extends in substantially the same direction in a state where the pressure regulating valve and the oil pressure sensor are mounted in the casing.

12. The hydraulic clutch device according to claim 1 , comprising:
a pair of the hydraulic clutches each of which is arranged on each of outsides in the axial direction of the output rotation shaft with respect to the power transmission part; and
a pair of the pressure regulating valves each of which is arranged on the outside of each of the pair of the hydraulic clutches.

Assignees

• Honda Motor Co Ltd

Inventors

• Yamaguchi Nobutaka
• Niwata kenji

Classifications

• F16D25/083

  Actuators therefor (F16D25/085 - F16D25/087 take precedence) · CPC title

• F16D13/52

  Clutches with multiple lamellae {; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member (F16D13/385 takes precedence)} · CPC title

• F16D25/0638

  with more than two discs, e.g. multiple lamellae · CPC title

• F16D25/123

  in view of cooling and lubrication · CPC title

• F16D25/14 Primary

  Fluid pressure control · CPC title