DE102016223932A1 - Clutch slave cylinder - Google Patents

Abstract

The present invention relates to a clutch slave cylinder (20) for a hydraulic clutch system, comprising a cylinder housing (18) with an axially displaceable in a cylinder annular piston for actuating a clutch disc, wherein the clutch slave cylinder (20) further comprises a sensor (26) with an external sensor cable ( 28) for detecting the axial position of the annular piston, the cylinder housing (18) or a connector (10) connected to the cylinder housing (18) having a groove (24) for receiving a fixing means (30) for fixing the sensor cable (28). is provided.

Description

The present invention relates to a clutch slave cylinder with an improved attachment of a sensor cable.

Clutch slave cylinders are widely known and serve, actuated by a clutch master cylinder, to actuate a clutch via a release or engagement system. In this case, often lines, such as hydraulic lines to be fixed to the clutch slave cylinder.

From the document WO 2015/149772 A1 In this regard, a holding device is known for attaching at least one fluid line to a first shell and a second shell, wherein the first shell and the second shell are contiguous and connectable to each other, wherein in at least one of the shells or in both shells recesses are provided form a channel when the two shells are applied to each other, in which a fluid line can be inserted, wherein locking means are provided on the shells, for locking the two shells and wherein fastening means are provided for fastening the holding device. As a result, by inserting the fluid lines into the recesses and connecting the shells, a simple and defined arrangement of the fluid lines in the motor vehicle can be achieved.

In order to be able to detect the position of the clutch disc and thus be able to close the wear state of the clutch, for example, sensor systems are often provided which can detect, for example, the position of an actuating piston in the clutch slave cylinder. In this regard, it is necessary to fix electrical cables for connecting the sensor to the clutch slave cylinder. For this purpose, it is known to use cable ties.

However, such solutions can still offer room for improvement.

It is therefore the object of the present invention to provide a measure with which at least one disadvantage of the prior art can be at least partially eliminated. It is in particular the object of the present invention to provide a solution by which a cable of a sensor for a clutch slave cylinder can be fixed in a simple and secure manner.

The object is achieved according to the invention by a clutch slave cylinder with the features of claim 1. Preferred embodiments of the invention are specified in the subclaims, in the description or the figures, with further features described or shown in the subclaims or in the description or the figures individually or in any combination may constitute an object of the invention unless the context clearly dictates otherwise.

It is proposed a clutch slave cylinder for a hydraulic clutch system, comprising a cylinder housing with an axially displaceable in a cylinder annular piston for actuating a clutch disc, wherein the clutch slave cylinder further comprises a sensor with an external sensor cable for detecting the axial position of the annular piston, characterized in that the Cylinder housing or connected to the cylinder housing connector is provided with a groove for receiving a fixing means for fixing the sensor cable.

By an above-described clutch slave cylinder, which can be designed in particular as a centric clutch slave cylinder (CSC, Clutch Slave Cylinder) and can be used in a Kupplungsausrück- or Kupplungseinrücksystem, it is possible that an external sensor cable fixed in a particularly simple and secure manner to the clutch slave cylinder can be. In this case, an external sensor cable can be understood to mean such a cable which is not arranged in the sensor housing but serves for the external connection of the sensor, for example for picking up data determined by the sensor.

Characterized in that the cylinder housing or a connector connected to the cylinder housing is provided with a groove for receiving a fixing means for fixing the sensor cable, by merely arranging the sensor cable to the housing or to the connector and by positioning and fixing the fixing means in the groove, about embracing the sensor cable, a secure fixation of the sensor cable to the housing or preferably be made possible on a connector. In this case, a fixation on the connector or the provision of the groove on the connector may be advantageous because no changes to the housing of the clutch slave cylinder are necessary in this case.

When present in the fixing position fixing means, it is thus provided that in the groove, a fixing means is arranged and fixed, which fixes the sensor cable.

As a result, it can be safely prevented that the sensor cable comes into contact with the clutch during use, for example, which could damage or even sever the sensor cable.

The provision and adaptation of a groove can be possible in a simple manner, such as when the cylinder housing or the connector are molded from a plastic, such as using an injection molding process. In this embodiment, commercially available fixing agents can be used, which can improve the applicability. In addition, this design can save costs such as the manufacturing process and also, for example by the use of a plastic compared to solutions often used in the prior art made of aluminum, bring a weight saving with it.

The proposed solution is particularly advantageous over solutions used in the prior art, according to which the sensor cable was fixed by means of a cable tie or a loose cable clamp, which was fixed in particular after arranging the sensor cable to the clutch slave cylinder or the connector to the corresponding components and the sensor cable so fixed. Because according to the invention, a fixation of the sensor cable can be made possible in a particularly simple and reversible manner.

A particularly simple attachment of the sensor cable can thereby be realized, if the fixing means is elastically deformable and can be brought by an elastic deformation in its fixing position, or in other words can be clipped into its fixing position. This allows a particularly simple and thereby reversible fixing of the fixing agent and thus of the sensor cable, which may possibly be advantageous for service work.

In this regard, it may be advantageous that the fixing means is a spring clip. By using a spring clip or a wire-shaped spring can be reliably prevented that moves with a mechanical force on the sensor cable this. This can ensure that the sensor cable is correctly positioned and does not shift substantially, which can prevent damage to the clutch system.

In principle, the groove can be arranged directly on the connector or the cylinder housing, or on a component arranged on the connector or the cylinder housing. Particularly preferably, it can be provided that the groove is part of a sleeve arranged on the connector. In this embodiment, the connector can in principle be designed without structural changes and only have an area on which the sleeve can be pushed axially or radially clipped, for example. Insofar as such a space is not given, it can be easily formed. In this case, the sleeve or its groove can be adapted to the desired fixing means, which can allow a high adaptability.

• 1 eine schematische Ansicht eines Konnektors für einen Kupplungsnehmerzylinder;
• 2 eine weitere schematische Ansicht des Konnektors aus 1;
• 3 eine schematische Ansicht des Konnektors aus 1 mit fixiertem Sensorkabel;
• 4 eine weitere schematische Ansicht des Konnektors aus 1 an einem Zylindergehäuse mit Sensor und fixiertem Sensorkabel; und
• 5 eine weitere schematische Ansicht des Konnektors aus 1an einem Zylindergehäuse mit Sensor und fixiertem Sensorkabel.

In the following, a particularly preferred embodiment of the invention will be explained with reference to the accompanying drawings, wherein it is explicitly pointed out that the object according to the invention is not limited to the embodiment described. Show it:

• 1 a schematic view of a connector for a clutch slave cylinder;
• 2 another schematic view of the connector 1 ;
• 3 a schematic view of the connector from 1 with fixed sensor cable;
• 4 another schematic view of the connector 1 on a cylinder housing with sensor and fixed sensor cable; and
• 5 another schematic view of the connector 1on a cylinder housing with sensor and fixed sensor cable.

In the 1 and 2 is a connector 10 shown. The connector 10 has a basic body 12 on, in a conventional manner, a first hydraulic port 14 and a second hydraulic port 16 having, wherein the second hydraulic port 16 the connection to a cylinder housing 18 a clutch slave cylinder 20 serves as this in the 4 and 5 is shown. In the cylinder housing 18 of the clutch slave cylinder 20 is in a conventional manner provided in a cylinder axially movable annular piston for actuating a clutch disc, wherein the position of the annular piston by a sensor 26 is detectable.

The 1 and 2 continue to show that the connector 10 or his basic body 12 with a sleeve 22 is provided, which has a groove 24 which is configured to receive a fixing agent 30 for fixing a sensor cable 28 , as shown below.

The 3 shows the connector in this regard 10 with a sensor cable fixed to it 28 of the sensor 26 for detecting the axial position of the annular piston of the clutch slave cylinder 20 , In detail it is shown that on the connector 10 or on his body 12 the sensor cable 28 is fixed by a designed as a spring clip fixative 30 which is in the groove 24 the sleeve 22 engages or in the groove 24 is fixed.

The 4 and 5 each further show a view of a clutch slave cylinder 20 with connector 10 , wherein further the sensor 26 on the cylinder housing 18 arranged, with the sensor cable 28 of the sensor 26 by the fixing means designed as a spring clip 30 is fixed.

LIST OF REFERENCE NUMBERS

10

connector

12

body

14

hydraulic connection

16

hydraulic connection

18

cylinder housing

20

Clutch slave cylinder

22

shell

24

groove

26

sensor

28

sensor cable

30

fixer

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2015/149772 A1 [0003]

Claims (4)

A clutch slave cylinder for a hydraulic clutch system comprising a cylinder housing (18) having a ring piston axially movable in a cylinder for actuating a clutch disk, the clutch slave cylinder (20) further comprising a sensor (26) having an external sensor cable (28) for detecting the axial position of the clutch the annular piston, has characterized in that the cylinder housing (18) or with the cylinder housing (18) is provided connected connector (10) with a groove (24) for receiving a fixing means (30) for fixing the sensor cable (28). Clutch slave cylinder after Claim 1 , characterized in that in the groove (24) a fixing means (30) is arranged and fixed, which fixes the sensor cable (28). Clutch slave cylinder after Claim 1 or 2 , characterized in that the fixing means (30) is a spring clip. Clutch slave cylinder after one of Claims 1 to 3 , characterized in that the groove (24) is part of a sleeve (22) arranged on the connector (10).

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