WO2018113834A1

WO2018113834A1 - Housing-adapter coupling disengagement system with twist-protected bayonet mount

Info

Publication number: WO2018113834A1
Application number: PCT/DE2017/101058
Authority: WO
Inventors: Doris Maria Reutter; Philippe Wagner
Original assignee: Schaeffler Technologies AG & Co. KG
Priority date: 2016-12-19
Filing date: 2017-12-12
Publication date: 2018-06-28
Also published as: DE112017006350A5; DE102016124820A1

Abstract

The invention relates to a housing-adapter combination (1) for a coupling disengagement system of a motor vehicle, having a housing (2) for a slave cylinder or for a master cylinder, on which an adapter (3), by means of a bayonet mount, secures in a form-fitting manner against axial displacement relative to the housing (2), wherein a snap-action connection, by means of at least one snap-action hook (4), prevents the adapter (3) from twisting relative to the housing (2), wherein the snap-action hook (4) is bound to the adapter (3) or to the housing (2) such that the snap-action hook (4) can be moved axially in order to separate in a non-destructive manner.

Description

Housing Adapter Kupplunqsausrücksvstem

with twist-lock bayonet lock

The invention relates to a housing adapter combination for a Kupplungsausrück- system of a motor vehicle, with a housing for a slave cylinder or for a master cylinder to which an adapter, preferably for guiding liquids or as a stop for a piston rod, via a bayonet fitting against axial displacement relative to the housing ensures, with a

Snap connection by means of at least one snap hook secures the adapter against rotation relative to the housing.

From the prior art, housing adapter combinations for clutch release systems are already known. Among other things, DE 10 2013 213 384 A1 discloses a release system for a friction clutch, comprising a slave cylinder and a hydraulic supply for supplying the slave cylinder with a hydraulic medium, wherein the slave cylinder is rotatable about an axis of rotation relative to the hydraulic supply, wherein the hydraulic supply to the slave cylinder by at least a seal is sealed, wherein at least one locking element is formed for fixing a seal in a direction of the axis of rotation, wherein the locking element is connected via a clamping connection with the hydraulic supply.

Also, another document such as EP 1 808 612 A1 discloses a release device for a vehicle clutch in which a housing of the release device is connected to a cover bearing by means of bayonet lock with the housing, which allows a rotatable connection with a housing cover, wherein the bayonet closure a Has anti-rotation.

However, the prior art always has the disadvantage that conventional anti-rotation devices are designed for a bayonet closure in such a way that they can not be checked for their functionality, since upon release of the bayonet closure break off the snap hooks. Also, the snap hooks can easily break off when overstretched, resulting in a malfunction. In addition, previous solutions for such a housing adapter combination with a twist-lock bayonet lock a large amount of space, which has a negative impact on the efficiency and the cost of the clutch release system as a whole.

It is therefore the object of the invention to avoid or at least mitigate the disadvantages of the prior art. In particular, a particularly cost-effective and simple solution for a non-destructive detachable rotation in a bayonet connection to be developed.

This object is achieved in a generic device according to the invention that the snap hook is connected to the adapter or the housing so that the snap hook for non-destructive loosening is axially displaced.

This has the advantage that the anti-rotation device according to the invention for a bayonet lock is easy to assemble and non-destructive dismantled. This allows the functionality to be checked without damaging the adapter or housing. At the same time, the solution takes up very little space, which has a positive effect on the overall performance of the slave cylinder or the master cylinder.

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

Preferably, the snap hook is attached to the adapter, since it is manufacturing technology easier to form the elastically deformable snap hook on the adapter than on the housing.

It is also expedient if at least two snap-action hooks are preferably arranged opposite one another, since then both snap-in hooks simultaneously extend axially. need to be steered in order to solve the adapter from the housing can. As a result, the connection is difficult to solve, so that unwanted loosening can be excluded and the customer can not disconnect the connection.

It can also be arranged evenly distributed or non-uniformly distributed several snap hooks, which advantageously increases the strength of the snap connection, but makes it difficult to loosen the connection.

Moreover, it is advantageous if the snap hook is arranged on a radially outer flange region. This allows the snap hook attack without great constructive and space-consuming effort outside of the housing.

Further, it is advantageous if the flange portion is separated by a slot-like recess of a main body of the adapter so that the flange portion can be axially displaced relative to the main body, allowing a non-destructive release of the connection.

Preferably, the flange portion is annular, which produces an elastic deformation with good power transmission properties.

In addition, it is expedient if the flange portion is connected to both ends in the circumferential direction on the main body. As a result, an elasticity of the snap hooks for axial displaceability combined with sufficiently high strength can be achieved, so that the connection does not become unintentionally released, but can only be released in the case of targeted and simultaneous deflection of all snap hooks.

Preferably, the snap hook is formed in the axial direction ramp-like protruding, so that during rotation of the adapter in the circumferential direction with the tip of the ramp rests against the axial edge of the housing and in a in axial direction. Direction protruding projection, like a nose, the housing engages, and so determines the rotational position, which is matched to the position of the bayonet sets.

Furthermore, it is advantageous if the flange portion of its materials and / or geometric dimensions is elastically axially displaceable relative to the main body, so that the main body, from which also protrudes the bayonet, remains at the same axial position, while only the rotation by the snap hooks so is moved axially that it can be solved.

In addition, it is advantageous if the slot-like recess extends on a circular path, since then the flange area results in a constant width, which produces a more uniform force in the adapter.

A favorable embodiment is characterized in that the slot-like recess extends on a partial circular path. The partial circular path is interrupted by the connection points, at which the flange portion is connected to the main body, so that the flange region has sufficient strength.

The partial circular path preferably comprises an angle of greater than 100 °. Further preferably, the partial circular path comprises an angle between 1 10 ° and 135 °. In this angular range, a desired elasticity of the flange region is generated geometrically. With less desired elasticity, the angle of the pitch circle track can be reduced or the slot-like recess can be arranged radially further inside.

Further, at the snap hook material and / or geometrically a predetermined breaking point may be formed at which breaks the snap hook at a predetermined load. Thus, the housing-adapter combination can be protected against improper use, since in case of improper use, the anti-rotation detaches and thus prevents damage to the other components. Preferably, the snap hook breaks off at the desired break point from a torque greater than about 2.5 Newton meters. A greater burden arises only when the housing-adapter combination is used improperly, so it makes sense from this load to bring about a forced release of the rotation by the termination of snap hooks.

The predetermined breaking point may be formed between the snap hook and the flange region or at the connection of the flange portion to the main body of the adapter, since it is particularly easy at these two points to produce a predetermined breaking point, for example by an introduced notch or groove. The predetermined breaking point between the flange region and the flange region is preferably carried out, since a load by a torque acts there.

It is advantageous if a nose is formed on the housing, behind which the

Snap hook engages to prevent rotational movement of the adapter relative to the housing. Thus, the elastic snap hook engage behind the fitting nose, so that a displacement in the circumferential direction is geometrically prevented.

In other words, the invention relates to a connection of a line adapter to a clutch slave cylinder. The cylindrical shape of the adapter is used to place snap hooks distributed over the circumference, which secure the bayonet lock between the line adapter and the housing of the slave cylinder (or even a master cylinder) against being twisted open. The snap hooks are preferably arranged opposite one another and connected to the line adapter in such a way that they project axially from a ring segment connected on both sides to the cylindrical part of the line adapter. The snap hooks are designed so that they are arranged on the same axis as the bayonet. Also an asymmetric version of the snap hook with only one or any number Snap hook is possible. The size of the ring segment determines the elasticity and flexibility of the snap hook.

The invention will be explained below with the aid of a drawing. Show it:

a perspective view of a housing-adapter combination according to the invention with a twist-lock bayonet between a housing and an adapter,

a side view of the adapter with a snap hook for Verdrehsi insurance of the bayonet lock,

3 is a perspective view of the adapter,

Fig. 4 is a front view of the adapter, and

Fig. 5 is a perspective view of the housing.

The figures are merely schematic in nature and serve only to understand the invention. The same elements are provided with the same reference numerals.

1 shows a housing-adapter combination 1 according to the invention with a housing 2 and an adapter 3. The adapter 3 is secured by a bayonet closure in a form-locking manner against axial displacement relative to the housing 2. About at least one snap hook 4, the adapter 3 engages in the housing 2 so that a snap connection between the adapter 3 and the housing 2 prevents rotation of the adapter 3 relative to the housing 2. In this case, the snap hook is the 4th connected to the adapter 3 or the housing 2, that the snap hook 4 can be moved axially non-destructive and the snap connection is released.

The snap hook 4 is connected to the adapter 3 as shown in FIG. The snap hook 4 is arranged on a radially outer flange region 5. The flange portion 5 is formed like a ring segment and radially separated from a main body 7 of the adapter 3 via a slot-like recess 6. The flange portion 5 is connected to the main body 7 at its both ends in the circumferential direction.

The housing 2 is cylindrical and has a recess 8, in which a bayonet 9 of the adapter 3 engages so that the axial position of the adapter 3 relative to the housing 2 is fixed. In this case, the bayonet closure is closed by inserting the adapter 3 into the housing 2 and rotating it about its longitudinal axis. Due to the asymmetrical design of the housing 2, the bayonet 9 of the adapter 3 thus engages behind a portion of the housing 2, so that the adapter 3 can not be pulled out. Since the bayonet lock can be released again by turning the adapter 3 in a direction of rotation opposite to the screwing direction and pulled out of the housing 2, the anti-rotation device according to the invention is attached to the housing-adapter combination 1.

The snap hook 4 projects ramp-like in the axial direction in the direction of the housing 2. The snap hook 4 is arranged on the radially outermost diameter of the adapter 3. The snap hook 4 extends to extend in a circumferential direction via a slope 10 in the axial direction. The slope 10 is in a flat paragraph 1 1, which lies in the plane which intersects the longitudinal axis of the housing 2 and the adapter 3 orthogonal. In the mounted state, the shoulder rests on an axial outer wall of the housing 2. The paragraph 1 1 goes over at a right angle in the falling stop area 12 of the snap hook 4. In this case, the stop region 12 of the snap-action hook 4 rests in the assembled state a suitably shaped abutment surface 13 of a nose / projection 14 of the housing 12 at.

The nose 14 of the housing 2 is arranged on the axial outer wall and formed with the same dimensions as the snap hook 4. In the assembled state, therefore, the stop region 12 of the snap-action hook 4 bears against the abutment surface 13 of the housing 2, so that a rotation is prevented. To release the connection, the snap hook 4 is displaced axially away from the housing 2, so that the snap hook 4 can be turned over the nose 14 of the housing 2 and the jonett lock is released.

In Fig. 2, the adapter 3 is shown in the unmounted state. In the radial direction, two bayonets 9 are formed, which are arranged opposite one another. The bayonets 9 extend radially outward and have an outer diameter which can be inserted in a predetermined angular position in the housing 2, but at a rotation about the longitudinal axis can not be axially pulled out of the housing 2 again because the bayonets 9 behind a geometric formation in the housing 2 engage. On the adapter two snap hooks 4 are arranged opposite one another.

The snap hooks 4 are offset in the circumferential direction to the bayonets 9, in particular offset by 90 °, arranged. The snap hooks 4 are arranged on the flange region 5. The flange portion 5 is axially elastically displaceable. A dash-dot line 15 shows the maximum axial deflection of the flange portion 5. The snap hooks 4 can be axially displaced at least by the height of the nose 14, so that the rotation can be solved.

Because snap hooks are arranged on both sides of the adapter 3 as shown in FIG. 3, the two snap hooks 4 must simultaneously be deflected axially so that snap hooks 4 can be pushed over the lugs 14 of the housing 2 and the connection can be released. The flange portion 5 is connected to the main body 7 of the adapter 3 at both ends lying in the circumferential direction, as shown in FIG. The fact that the flange region 5 is separated from the slot-like recess 6 from the main body 7 results in a ring segment geometry for the flange region 5

Flange region 5 is therefore influenced not only by the material of the adapter 3, but above all by the size of an angle 16, which comprises the ring segment of the flange region 5. The larger the angle 16, the further the

Flange area 5 are axially displaced. The fact that the flange region 5 is connected at both ends, it provides sufficient strength in the axial direction, so that the flange portion 5 is not unintentional or displaced by the customer, but the housing-adapter combination 1 is difficult to solve.

On the adapter 3, a predetermined breaking point is introduced, which is a cancel of the

Snap hook 4 favors from a predetermined torque. The predetermined breaking point is introduced either at the connection of the flange region 5 to the main body of the adapter 3 or at the connection of the snap-action hook 4 to the flange region 5.

Fig. 5 shows the housing 2 in an unmounted state. The housing 2 has a cylinder portion 17, in which the recess 8 is introduced for the engaging bayonet 9. At the axial end of the cylinder portion 17, the two opposite, axially projecting in the direction of the adapter 3 lugs 14 are formed, behind which engage the two snap hooks 4. Reference List Housing adapter combination

casing

adapter

snap hooks

flange

slot-like recess

main body

recess

bayonet

slope

paragraph

stop area

stop surface

Tab / nose

Dash-dot line

angle

cylinder area

Claims

claims

1 . Housing adapter combination (1) for a clutch release system

Motor vehicle, with a housing (2) for a slave cylinder or for a master cylinder to which an adapter (3) via a bayonet lock positively against axial displacement relative to the housing (2) ensures a snap connection by means of at least one snap hook (4) the adapter (3) against rotation relative to the housing (2) secures, characterized in that the snap hook (4) is so connected to the adapter (3) or the housing (2) that the snap hook (4) for non-destructive loosening is axially displaceable ,

2. housing adapter combination (1) according to claim 1, characterized in that at least two snap hooks (4) on the adapter (3) are arranged.

3. Housing adapter combination (1) according to claim 1 or 2, characterized in that the snap hook (4) is arranged on a radially outer flange region (5).

4. Housing adapter combination (1) according to claim 3, characterized in that the flange portion (5) is separated by a slot-like recess (6) of a main body (7) of the adapter (3).

5. Housing adapter combination (1) according to claim 4, characterized in that the flange portion (5) is connected at both circumferentially located ends on the main body (7).

6. housing adapter combination (1) according to one of claims 1 to 5, characterized in that the snap hook (4) is formed in the axial direction ramp-like protruding. Housing adapter combination (1) according to claim 5 or 6, characterized in that the flange portion (5) of its materials and / or geometrical dimensions elastically axially relative to the main body

(7) is relocatable.

8. Housing adapter combination (1) according to one of claims 4 to 7, characterized in that the slot-like recess (6) extends on a circular path.

9. Housing adapter combination (1) according to one of claims 1 to 8, characterized in that the snap hook (4) is materially and / or geometrically such that it has a predetermined breaking point at which the snap hook (4 ) breaks at a predetermined load.

10. Housing adapter combination (1) according to one of claims 1 to 9, characterized in that on the housing (2) has a nose (14) is formed, behind which the snap hook (4) engages to a rotational movement of the adapter (3) relative to the housing (2) to prevent.