JP5373294B2 - Hydraulic control release device - Google Patents

Description

  The present invention belongs to the field of the automobile industry.

  More particularly, the present invention relates to a release device for an automobile clutch.

  The clutch system operates the clutch in each of the three states (engaged, disengaged, and slipped) of the clutch by, for example, simply operating the clutch pedal and adjusting the driving torque by the vehicle driver. A control device is provided.

  This control device consists of three main elements: a pedal assembly, an internal control device and an external control device. The pedal assembly connects an external control device to the internal control device, and serves as an intermediary between the clutch and the driver. As is well known, the internal control device includes a fork, a joint, and a thrust bearing guide. The internal control device connects the external control device and the thrust bearing.

  The external control device has a hydraulic system including four elements, that is, a master cylinder that is a pressure feeding body, a connection hose, a pressure receiving portion, and hydraulic oil that is a control fluid. A hydraulic system that functions under high pressure supplies energy to a hydraulic actuator necessary for the clutch, and lubricates various elements under pressure.

  More specifically, the present invention relates to a release device for a hydraulic control clutch that can be linked to a release device.

  In general, this type of release device includes a body for attaching it, a guide tube, and an annular blind chamber (chamber closed at one end) fixed to the body. The blind chamber receives a control fluid and a piston.

  The guide tube includes a supply orifice that supplies fluid to a blind chamber connected to a supply pipe that can be associated with the bore within the body.

  The purpose of the known release device is to hydraulically connect the supply pipe and the guide tube while maintaining a reliable sealing. In other words, the release device provides a good seal between the body and guide tube around the supply orifice that supplies fluid to the blind chamber.

  The release device of the hydraulic control device described in Patent Document 1 includes a body, a guide tube fixed to the body, an annular blind chamber, and a piston, and the shaft end of the piston is made of a plastic material, And the seal | sticker provided in the plastic part of the piston is hold | maintained by the bimaterial injection or the type | mold.

  This device is impervious to axial crushing of the seal, which has proven difficult to hold. In addition, there is a need to provide connectors and pins that must be dimensioned and toleranced so that the seal can be clamped. Furthermore, the clamping is not uniform.

  Patent Document 2 discloses an apparatus in which various sealing means are more effective, and greater modularity can be obtained in design. A tubular sealing element is shown in the form of a blind cartridge (a cartridge with one end closed), and a body that rises diagonally with an aperture that matches the doorway formed in the wall of the tubular sealing element A supply pipe is connected to the hole. A tubular element is inserted axially into the lumen between the outer tube and the end of the tubular sealing element that itself connects to the outer body. By adding cartridges and adjusting the contact pressure on each of the elements (supply pipe, body, blind cartridge, and guide tube), compression of the seal for axial sealing independent of lamination is possible.

However, this device requires many additional parts and requires the use of complex and expensive assembly machines.
French Patent Publication No. 2780123 European Patent No. 1066476

  The release device according to the invention alleviates the disadvantages of the prior art by providing an efficient and uniform sealing system.

  Designing the release device based on the present invention allows the supply pipe to be positioned in an appropriate position.

  In accordance with the present invention, the release device is simplified and the number of parts required is reduced, thus reducing parts management and costs.

  The sealing means of the release device according to the invention eliminates the need for repeated machining.

  The sealing provided by the release device according to the present invention is not superficial, is much more reliable, and the space required in the transmission is reduced.

  To achieve this object, the release device according to the present invention controls the blind chamber using a body, a guide tube that can be fixed to the body, an annular blind chamber defined by the guide tube, and a bore. A hydraulic control release device for a clutch comprising a supply pipe capable of supplying fluid, a supply orifice, and sealing means, wherein the sealing means is a longitudinal wall of the bore of the guide tube, Alternatively, the release device is configured to come into contact with a longitudinal wall of the supply pipe.

  The sealing means is adapted to apply a force having at least one radial component to the guide tube and the supply pipe.

  More precisely, the sealing means is annular.

  It is advantageous if one of the ends of the guide tube is formed with a projection perpendicular to its main axis so that the sealing means is sandwiched between the guide tube and the supply pipe.

  Advantageously, the protrusion is adapted to receive sealing means, one end of a supply pipe, a bore and a supply orifice.

  The bore can also be provided on a cylindrical ring at the end of the guide tube or in a radial section or protrusion on the guide tube.

  The guide tube is advantageously located at right angles to the supply pipe and is centered directly on the clutch casing.

  More precisely, the projection can accommodate the end of a supply pipe comprising a generally cylindrical sleeve.

  The invention will be more clearly understood from the following description of illustrative and non-exhaustive examples of the invention with reference to the accompanying drawings.

  FIG. 1 schematically shows the configuration of a conventional clutch.

  In general, in a vehicle equipped with an engine 1, the torque generated by the engine 1 is transmitted to the wheels 3 so that the function of the clutch 2 can be started and the speed ratio of the transmission 4 is changed. Is to interrupt.

  The clutch 2 is provided with two friction discs 5 that are pressed against each other so that thrust bearings (control elements) can be separated from each other by the action of the fork. Is operated via the hydraulic connection means 7 and the transmission means (mechanism and friction device).

  More specifically, the hydraulic connecting means 7 extends from the pressure feeding portion to the pressure receiving cylinder, and the pressure receiving cylinder transmits force to a clutch fork that transmits force to a thrust bearing acting on the diaphragm. Yes.

  When the clutch pedal 6 is pressed, the piston of the master cylinder moves in the axial direction, discharges the control fluid (or compressed air) toward the pressure receiving portion, and pressurizes the hydraulic control chamber (blind chamber) of the pressure receiving portion.

  As the chamber volume increases, the clutch release bearing moves with the piston. In this case, the diaphragm rotates to release its action on the pressure plate of the clutch, and the clutch friction disk 5 is released. When the driver releases the clutch pedal 6, the piston of the master cylinder and the piston return to their initial positions.

  2 and 3 are side perspective views of the apparatus according to the present invention, and FIG. 4 is a partial exploded view thereof.

  The device according to the invention comprises a body 8 for attachment to the casing of the transmission 4.

  An annular blind chamber 10 (shown in FIG. 6) is formed by fixing the guide tube 9 to the body 8.

  The control fluid is caused to flow into the annular blind chamber 10 in which the piston is inserted by the supply pipe 11.

  The supply pipe 11 is protected by a cylindrical sleeve or connector 12.

  The body 8 is first attached to the guide tube 9 and then the sleeve or connector 12 is attached to the supply pipe 11 by means of, for example, snapping or any other attachment means known per se.

  The guide tube 9 has a supply orifice 13 inside the bore 14. Therefore, the end of the supply pipe 11 is connected to the blind chamber 10 by the supply orifice 13 (shown in FIGS. 5 and 6).

  At least one sealing means 15 is arranged between the bore 14 of the guide tube 9 and the supply pipe 11.

  The sealing means 15 may be an annular seal, for example.

  The sealing means 15 and the supply pipe 11 are held in the axial direction by the connector 12.

  In this way, the sealing means 15 is compressed in the radial direction by the bore 14 of the guide tube 9 and the supply pipe 11.

  Alternatively, a pin 16 for keeping the supply pipe 11 in an appropriate position and keeping a seal may be provided in the apparatus (see FIG. 6).

  The connector 12 includes two grooves, an outer groove and an inner groove. The outer groove can cooperate with a pin 16 disposed in the cavity of the outer body 8 to attach the connector 12. The inner groove can cooperate with a radial deformation of the supply pipe 11 to keep the supply pipe 11 from moving relative to the connector 12.

  FIG. 5 is a side perspective view showing a part of the device according to the invention.

  One end of the guide tube 9 is provided with a thick cylindrical body provided with a bore 14 that opens to the blind chamber 10.

  A supply pipe 11 is held in the bore 14.

  Alternatively, the bore 14 may be provided in a non-cylindrical ring, a radial portion, a protrusion, or the like on the guide tube 9.

  FIG. 6 is a schematic cross-sectional view of an apparatus according to the present invention.

  Sealing of this device is achieved by at least one sealing means 15 in a specific configuration of the guide tube 9. One end of the guide tube 9 protrudes vertically above the blind chamber 10. This protrusion is orthogonal to the main axis of the guide tube 9. In other words, the protrusion is directed in the radial direction with respect to the main axis of the guide tube 9.

  With this configuration of the guide tube 9, the sealing means 15 can be sandwiched between the supply pipe 11 and the sealing means 15 can be crushed in the radial direction. .

  The sealing means 15 presses at least one longitudinal wall of the bore 14 of the guide tube 9 or at least one longitudinal wall of the supply pipe 11, so that a force having at least one radial component is It is added to the guide tube 9 and the supply pipe 11.

  The protrusion perpendicular to the axis of the guide tube 9 can receive the sealing means 15, one end of the supply pipe 11, the bore 14 and the supply orifice 13.

  A supply pipe 11, which can be provided with a connector 12 on its outer surface, can be inserted into the bore 14 so that the guide tube 9 that can rotate relative to the body 8 can be prevented from moving.

  Therefore, the sealing means 15 is a U-shaped structure in a longitudinal section composed of the axial positions of the guide tube 9 and the supply pipe 11 and the axial positions of the outer body 8 and the connector 12 (see FIG. 6). Is crushed in the radial direction by the pressure exerted directly by.

  The guide tube 9 is arranged perpendicular to the supply pipe 11 because of its vertical protrusion.

  The hydraulic connection between the supply pipe 11 and the guide tube 9 is performed in a sealed state while keeping the supply pipe 11 in the correct position.

  The device according to the invention makes it possible to bring the guide tube 9 into direct contact with the clutch casing to which the body 8 is attached, whereby the guide tube 9 is positioned relative to the casing, for example by means of a shoulder 17. Is advantageous because it can be centered. Therefore, it is possible to eliminate the centering action between the guide tube 9 and the casing by disconnecting the casing and the body 8 in the axial direction, and the shaft of the guide tube is the same as that of the casing of the transmission 4. Match.

  The device according to the invention has the advantage of being easy to install without modification or improvement.

It is a figure which shows the structure of the conventional clutch roughly. 1 is a side perspective view of an apparatus according to the present invention. 1 is a side perspective view of an apparatus according to the present invention. Figure 2 is an exploded view of the device according to the present invention. Figure 2 is a side perspective view of a part of the device according to the invention. 1 is a schematic cross-sectional view of an apparatus according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine 2 Clutch 3 Wheel 4 Transmission 5 Friction disk 6 Clutch pedal 7 Hydraulic connection means 8 Body 9 Guide tube 10 Blind chamber 11 Supply pipe 12 Connector 13 Supply orifice 14 Bore 15 Sealing means 16 Pin 17 Shoulder

Claims (13)

A blind chamber is controlled by using a body (8), a guide tube (9) that can be fixed to the body (8), an annular blind chamber (10) defined by the guide tube, and a bore (14). A supply pipe (11) capable of supplying a fluid, a supply orifice (13), and a sealing means (15) are provided, and this sealing means (15) is provided in the bore (14) of the guide tube (9). ) And / or the vertical wall of the supply pipe (11), thereby crushing the sealing means (15) radially ,
Hydraulic control release device for clutch (2) using release device, characterized in that the guide tube (9) is centered directly on the clutch casing . A blind chamber is controlled by using a body (8), a guide tube (9) that can be fixed to the body (8), an annular blind chamber (10) defined by the guide tube, and a bore (14). A supply pipe (11) capable of supplying a fluid, a supply orifice (13), and a sealing means (15) are provided, and this sealing means (15) is provided in the bore (14) of the guide tube (9). ) And / or the vertical wall of the supply pipe (11), thereby crushing the sealing means (15) radially ,
Clutch (2) using a release device, characterized in that the supply pipe (11) is inserted into the bore (14) and the guide tube (9) rotates relative to the body (8 ) Hydraulic control release device for. 3. The sealing means (15) according to claim 1 or 2 , characterized in that a force having at least one radial component is applied to the guide tube (9) and the supply pipe (11). The release device described in 1. The release device according to any one of claims 1 to 3 , characterized in that the sealing means (15) is annular. 3. Release device according to claim 1 or 2 , characterized in that the guide tube (9) can be sandwiched between the sealing means (15) and the supply pipe (11). . 6. The release device according to any one of claims 1 to 5 , characterized in that a protrusion perpendicular to the main axis is formed at one end of the guide tube (9). 7. Release device according to claim 6 , characterized in that the projection is adapted to receive one end of the sealing means (15) and the supply pipe (11). 3. Release device according to claim 1 or 2 , characterized in that the supply orifice (13) is located in a bore (14) of the guide tube (9). The bore (14) is provided on a cylindrical ring at the end of the guide tube (9) or in a radial section or projection on the guide tube (9). Item 9. The release device according to any one of Items 1 to 8 . 8. Release according to claim 1 or 2, or 5 to 7 , characterized in that the guide tube (9) is located at right angles to the supply pipe (11). apparatus.   A blind chamber is controlled by using a body (8), a guide tube (9) that can be fixed to the body (8), an annular blind chamber (10) defined by the guide tube, and a bore (14). A supply pipe (11) capable of supplying a fluid, a supply orifice (13), and a sealing means (15) are provided, and this sealing means (15) is provided in the bore (14) of the guide tube (9). ) And / or the vertical wall of the supply pipe (11), thereby crushing the sealing means (15) radially,
  At one end of the guide tube (9), a protrusion perpendicular to the main axis is formed,
  For the clutch (2) using a release device, the protrusion is adapted to accommodate the end of the supply pipe (11) with a generally cylindrical sleeve (12) Hydraulic control release device.   Said sleeve (12) comprises two outer grooves and an inner groove, said outer groove being able to cooperate with a pin (16) arranged in the cavity of the body (8), said inner groove being a feed 12. Release device according to claim 11, characterized in that it can cooperate with a radial deformation of the pipe (11). Hydraulic connection between the supply pipe (11) guides a tube (9), while keeping the correct position of the supply pipe (11), according to any one of claims 1 to 12 carried out in a sealed state Release device .

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