DE102016215370A1 - Coupling of an additional housing to a Zentralausrücker housing - Google Patents

Abstract

The invention relates to a Zentralausrücker (1) for a clutch of a motor vehicle having a main housing (2) forming at least one fillable with hydraulic fluid pressure chamber, wherein a for receiving a Sensierziels, which is to be detected by a sensor, provided additional housing (3) on Main housing (2) is releasably secured, wherein on a lateral surface (4) of the main housing (2) positive locking (6) and centering means (7) are provided which come into positive engagement with counter-form-locking means (8) and Zentriermittelaufnahmen (9) and optionally via a biasing element are connected together without play.

Description

The present invention relates to a central release mechanism for a clutch of a motor vehicle, comprising a main housing forming at least one hydraulic fluid-filled pressure chamber, wherein an additional housing is provided for receiving a sensing target / magnet / magnetic body to be sensed by a sensor is releasably secured to the main body.

Various possibilities are already known from the prior art to attach a so-called sensor housing or additional housing to the main housing of the central release.

So is, for example, from the DE 10 2016 208 379 A1 a clutch slave cylinder with odometer known. Herein, a clutch slave cylinder is disclosed with a cylinder housing having a pressure chamber in which an annular piston is guided axially displaceable, wherein the annular piston is operatively connected to a release bearing and wherein a sensor unit is provided which a magnetic body and a magnetic body detecting sensor for determining the axial Has position of the release bearing. The magnetic body is guided displaceably in operative connection with the release bearing, wherein the sensor is positioned stationary with respect to the cylinder housing and the magnetic body is displaceably guided in a cam track. Here, the sensor unit is attached via the release bearing on the clutch slave cylinder.

In the EP 1 898 111 B1 is a Zentralausrücker for a hydraulic clutch actuation disclosed. This Zentralausrücker comprises a housing having a through hole and a sleeve disposed therein, mounted thereon, on which an operatively connected to the clutch ring piston is slidably guided and to which a release bearing inner ring is attached. To detect the axial position of the annular piston in this case a sensor is attached to the housing, which is associated with a displaceably guided magnetic body, which is connected axially free of play with an annular bearing body attached to the release bearing inner ring for driving through the annular piston. The magnetic body is slidably guided over the displacement with a constant distance to the sensor housing on the housing and engages with a guide shoe in a circumferential groove of the annular body axially free of play but radially movable. Thus, said distance remains constant in all relative axial displacements and disengagement bearing tumbling movements occurring and on the guide surfaces for the magnetic body occurs by drag torque action during operation no sensor signal accuracy impairing wear.

As already in the DE 10 2016 208 379 A1 is also in the EP 1 898 111 B1 set the sensor housing on the release bearing.

The DE 10 2016 210 273 A1 discloses a pressure cylinder for a clutch actuation system of a motor vehicle, comprising a housing and a disk-shaped mounting region mounting plate, wherein the housing is positively connected to the mounting portion and the mounting plate has a protruding from the mounting portion holder which serves to receive a sensor. In this document, the sensor housing via a separate component, namely the mounting plate, connected to the printing cylinder.

In the current state of the art, the sensor housing and the Zentralausrückergehäuse are usually bolted together or riveted. As a result, however, further steps are necessary, making the production more expensive. In addition, the corresponding space for rivet heads and / or screw heads must be kept in the installation space, which is e.g. especially on the underside of the Zentralausrückers can cause difficulties.

Alternatively, the two housings also, as in the DE 10 2016 210 273 A1 shown connected via a separate component. This separate component can, for example, also be connected to the central release housing by means of a clip connection / snap connection. However, space must also be provided for this type of connection (for the mounting plate).

The object of the invention is to avoid or at least mitigate the disadvantages of the prior art, and in particular to provide a Zentralausrücker, which allows a simple and quick installation of the sensor housing with the Zentralausrückergehäuse, without the use of rivets and / or screws.

The object of the invention is achieved in a generic Zentralausrücker characterized in that on a lateral surface of the main housing (the Zentralausrückergehäuses) positive locking and centering means are provided, which come into positive engagement with Gegenformschlussmitteln and Zentriermittelaufnahmen.

In this case, the surface is understood as the surface area which corresponds to the (radially outer) envelope surface of the main housing. That is, the lateral surface or envelope surface does not refer to the base surface, or the bottom surface, and the lid surface, but only on the (radial) side outer surfaces.

Advantageous embodiments are claimed in the subclaims and are explained below.

So it is advantageous if the centering means are formed as two spaced apart along the circumference preferably spaced dome. As a result, a torsion-proof connection of the two housings can be realized.

It has been found to be advantageous if the positive locking means are designed as hooks. By means of these hooks, with a corresponding counter-form-fitting means, for example in the form of a web, a positive connection can be formed, and thus a connection of the two housings can be implemented without needing to use rivets and / or screws.

In particular, it is advantageous if a plurality of hooks, preferably an odd number of hooks is used. As a result, it can be ensured that the connection of the two housings can withstand even greater loads and does not come loose unintentionally.

For the orientation of these hooks, it has been found to be advantageous if the hooks are aligned with their hook noses alternately / alternately, approximately radially inward and pointing radially outward. As a result, the counter-form-locking means is encompassed from both sides, whereby the connection / the positive connection is more difficult to solve.

It is advantageous if the vast majority of hooked noses pointing radially outward.

If the counter-form-closure means is at least partially surrounded by the hooks from two sides, a better (symmetrical) force introduction is possible.

In addition, it has been found to be advantageous for the counter-form-closure means, if this is designed as a web, which is preferably in the tangential direction to the main body about the formation of a single Hakennasenaufnahmeloch, for example. With a rectangular cross-section formed.

Furthermore, it is advantageous if the additional housing, which serves as a sensor housing, Domaussparungen for positive / play-free recording each of a dome, approximately in the manner of a rounded pin with a cylindrical cross-section is formed. The domes are preferably slightly longer than the hooks to ensure easy threading of the additional housing during assembly. Furthermore, the domes serve for torque support of the bearing and for orientation of the additional housing.

Furthermore, it is advantageous if a biasing means is arranged between the additional housing and the main housing. This biasing means is formed, for example, as an O-ring or other elastic element and serves to ensure that the tolerances required for the joining of the parts can be eliminated again, so that the additional housing is mounted without play and with bias on the main housing.

In other words, the invention consists in the fact that the connection of a sensor to a Zentralausrücker is realized screw-free or rietfrei, and is as stable as, for example. a bolted connection or at least the loads over the life in sufficient quality for the sensor signal withstands. For this purpose, only minimal changes existing Zentralausrückergehäuse will be required. In addition, the manufacturing process is significantly optimized, i.e., time and / or the use of special tools etc. are saved. Due to the minimal changes in existing housings, a large number of systems can also be equipped with sensors.

It can also be said that the invention comprises a Zentralausrücker to which the sensor housing is to be mounted on the slave cylinder housing provided shots. For this purpose, two dome and three hooks are provided on the slave cylinder housing (main housing) which cooperate with the sensor housing (additional housing) and clip the sensor housing to the slave cylinder housing, without that additional fasteners, in particular screws and / or rivets, are necessary.

The invention will be explained in more detail below with the aid of figures, in which an exemplary embodiment is shown. Show it:

1 a partial perspective view of a main housing of a Zentralausrückers with attachment structures for mounting an additional housing;

2 the additional housing in a perspective view from above;

3 the additional housing in a perspective view from below; and

4 a sectional view of the main housing and the additional housing in the mounted / installed state.

The figures are merely schematic in nature and are only for the understanding of the invention. The same elements are provided with the same reference numerals.

1 shows a partial perspective view of a Zentralausrückers 1 which is a main body 2 which forms at least one pressure chamber which can be filled with hydraulic fluid and which is not shown here. To an additional housing 3 (please refer 2 or 3 ), which is provided for receiving a Sensierziels, such as. A so-called target, in the form of a magnet or a magnetic body, on the main housing 2 to fasten, is on a lateral surface 4 of the main housing 2 a connecting section 5 intended. The connecting section 5 consists of positive locking means 6 as well as centering means 7 that with with the additional housing 3 provided Gegenformschlussmitteln 8th or Zentriermittelaufnahmen 9 (please refer 2 ) get into positive engagement.

The positive locking means 6 are in the in 1 shown exemplary embodiment in the form of three hooks 10 formed, which are oriented alternately radially outward or radially inward / aligned. The centering means 7 are as round-pin, cylindrical dome 11 trained and allow a twist-proof connection of the additional housing 3 to the main body 2 , The dome 11 are a bit longer than the hooks 10 To make a simple threading of the additional housing 3 when mounting to the main body 2 to ensure. In addition, the dome serve 11 also for the torque support of the release bearing (not shown here) and for orientation of the additional housing.

The 2 and 3 show the additional housing 3 in a perspective view from above ( 2 ) or from below ( 3 ). In 2 are the Zentriermittelaufnahmen 9 to recognize, which are formed in the form of circular recesses to those in 1 shown dome 11 take. In the area between the centering shots 9 is the counter-form closure 8th for connection to the hooks 10 arranged. The counter-form-locking agent 8th is here as a footbridge 12 formed, which together with the (remaining) additional housing 3 a hook nose pick-up hole 13 formed, wherein the hook nose receiving hole 13 has a rectangular cross-section.

In addition, the additional housing has 3 in its center of the component a larger recess 14 on which serves to receive the target (not shown here).

3 shows the additional housing 3 in a perspective view from below, in which also the Zentriermittelaufnahmen 9 for the in 1 shown dome 11 as well as the hook nose pick-up hole 13 can be seen. To the recesses 9 . 13 around is a recess or depression 15 educated. This serves to orient an additional element, such as an O-ring or other elastic element (not shown), defined and when mounted to the main housing 2 to press. As a result, the tolerances required for the joining of the parts, such as, for example, hook length tolerances and web height tolerances, are eliminated again, so that the additional housing 3 backlash-free and with preload on the main housing 2 is mounted.

At the back surface of the additional housing 3 is a recess 16 formed in the form of a rectangular hole, which serves as a space for receiving the board (not shown here).

In addition, the in 3 shown additional housing 3 over two circular feet 17 ,

4 shows a partial sectional view of the main housing 2 and the additional housing 3 in the assembled state. This is an O-ring (not shown), which is in the recess 15 is arranged between the two housings 2 . 3 pressed. On the left in the figure is the additional housing 3 , which may also be referred to as a sensor housing, shown that the recess 14 for the target, which also serves as guide geometry, as well as the installation space 16 for the board.

The jetty 12 is in the assembled state between the hooks 10 , which are arranged with their hook noses alternately, ie alternately radially inward and radially outward. This makes it possible that the force reaction, which is caused by the pressed element, such as. The O-ring, axially as possible, ie along the axial direction A, runs to no bending stress on the hook 10 exercise. Furthermore, it can be seen that the additional housing 3 in the mounted state in the area of the Zentriermittelaufnahmen 9 something about the dome 11 of the main housing 2 also stands to be able to ensure a perfect installation here.

LIST OF REFERENCE NUMBERS

1

 CSC

2

 Main housing (central release housing)

3

 Additional housing (sensor housing)

4

 lateral surface

5

 connecting portion

6

 Fit means

7

 centering

8th

 Against interlocking means

9

 Zentriermittelaufnahme

10

 hook

11

 cathedral

12

 web

13

 Hooked nose receiving hole

14

 recess

15

 Recess / recess

16

 recess

17

 feet

A

 axially

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

• DE 102016208379 A1 [0003, 0005]
• EP 1898111 B1 [0004, 0005]
• DE 102016210273 A1 [0006, 0008]

Claims (10)

Central disengager ( 1 ) for a clutch of a motor vehicle with a main housing ( 2 ), which forms at least one pressure chamber that can be filled with hydraulic fluid, wherein an additional housing provided for receiving a sensing target, which is to be detected by a sensor (US Pat. 3 ) on the main housing ( 2 ) is releasably secured, characterized in that on a lateral surface ( 4 ) of the main housing ( 2 ) Positive locking ( 6 ) and centering means ( 7 ) are provided which in positive engagement with counter-form-locking means ( 8th ) and Zentriermittelaufnahmen ( 9 ) reach. Central disengager ( 1 ) according to claim 1, characterized in that the centering means ( 7 ) as two domes ( 11 ) are formed. Central disengager ( 1 ) according to claim 1 or 2, characterized in that the positive locking means ( 6 ) as a hook ( 10 ) are formed. Central disengager ( 1 ) according to claim 3, characterized in that a plurality of hooks ( 10 ) is used. Central disengager ( 1 ) according to claim 3 or 4, characterized in that the hooks ( 10 ) are aligned with their hook nose alternately. Central disengager ( 1 ) according to claim 5, characterized in that the alternating hooks are formed in an even or odd number. Central disengager ( 1 ) according to one of claims 3 to 6, characterized in that the counter-form-locking means ( 8th ) from two sides of the hooks ( 10 ) is at least partially encompassed. Central disengager ( 1 ) according to one of claims 1 to 7, characterized in that the counter-form-locking means ( 8th ) as a bridge ( 12 ) is trained. Central disengager ( 1 ) according to one of claims 1 to 8, characterized in that in the additional housing ( 3 ) Domaussparungen ( 9 ) for the positive reception of each cathedral ( 11 ) are formed. Central disengager ( 1 ) according to one of claims 1 to 9, characterized in that between the additional housing ( 3 ) and the main body ( 2 ) is arranged a biasing means.

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