阅读说明：本技术 从动缸或主缸设备的活塞装置以及从动缸或主缸设备 (Piston arrangement for a slave or master cylinder system, and slave or master cylinder system ) 是由 纳丁·博厄 曼纽尔·巴斯勒 于 2021-04-30 设计创作，主要内容包括：本发明涉及一种用于机动车的离合器或制动器操纵设备的从动缸或主缸设备(30)的活塞装置(1),其具有：移动装置(2),用于移动从动缸或主缸设备(30)的轴承装置(31)；引导元件(3),移动装置(2)沿着所述引导元件直线引导地和可直线移动地设置,其中移动装置(2)具有弹簧和/或阻尼元件(4,5,6),用于间接地或直接地贴靠在轴承装置(31)上。此外,本发明涉及一种用于机动车的离合器或制动器操纵设备的从动缸或主缸设备(30)。(The invention relates to a piston arrangement (1) for a slave or master cylinder device (30) of a clutch or brake actuating device of a motor vehicle, comprising: a moving device (2) for moving a bearing device (31) of a slave cylinder or master cylinder apparatus (30); a guide element (3) along which the displacement device (2) is arranged in a linearly guided and linearly displaceable manner, wherein the displacement device (2) has a spring and/or damping element (4, 5, 6) for the purpose of resting indirectly or directly on the bearing device (31). The invention further relates to a slave cylinder or master cylinder device (30) for a clutch or brake actuating device of a motor vehicle.)

1. A piston device (1) for a slave or master cylinder apparatus (30) of a clutch or brake operating apparatus of a motor vehicle, having:

-a displacement device (2) for displacing a bearing arrangement (31) of a slave cylinder or master cylinder arrangement (30), and

a guide element (3) along which the displacement device (2) is arranged in a linearly guided and linearly displaceable manner,

it is characterized in that the preparation method is characterized in that,

-the moving device (2) has spring and/or damping elements (4, 5, 6) for abutting indirectly or directly against a bearing device (31).

2. The piston device as set forth in claim 1,

-wherein the moving means (2) are formed by the spring and/or damping element (6) only,

or

-wherein the moving means (2) comprises a piston assembly (7).

3. The piston device according to claim 1 or 2,

-wherein the moving means (2) comprise a piston assembly (7) which is hollow-cylindrically configured so as to be able to accommodate a shaft in the middle thereof, and

-wherein the piston assembly (7) has two piston elements (8, 11) which are formed separately from each other, the spring and/or damping element (4, 5) being arranged between the piston elements.

4. Piston device according to one of the preceding claims,

-wherein the first piston element (8) of the piston assembly (7) of the moving device (2) comprises: a first axial end side (A1) by means of which the first piston element (8) can be arranged on an outer ring element (32) of a bearing arrangement (31); and a second axial end side (A2) comprising a housing (9) in which the spring and/or damping element (4, 5) is arranged.

5. Piston device according to one of the preceding claims,

-wherein a second piston element (11) of a piston assembly (7) of the moving device (2) comprises a third axial end side (A3), which third axial end side of the second piston element (11) is arranged opposite to a first piston element (8) of a piston assembly (7) of the moving device (2),

-wherein said third axial side (a3) comprises a housing (12) in which said spring and/or damping element (4, 5) is arranged.

6. A piston device according to claim 5 in combination with claim 4,

-wherein the spring and/or damping element (4, 5) is arranged in a receptacle (9) on the second axial side (a2) of the first piston element (8) and in a receptacle (12) on the third axial side (A3) of the second piston element (11), the first and second piston elements being opposite each other, in particular with their first and third end sides (a1, A3) opposite each other.

7. Piston device according to one of the preceding claims,

-wherein the spring and/or damping element (4, 5, 6) has a material having a stiffness which is smaller than a stiffness of a material of the moving device (2), in particular smaller than a stiffness of a material of a piston element (8, 11) of a piston assembly (7) of the moving device (2).

8. Piston device according to one of the preceding claims,

-wherein the spring and/or damping element (4, 5, 6) has a rubber material,

or

-wherein the spring and/or damping element (3, 4) is designed as a leaf spring or as a spring ring or as a disk spring or as a coil spring, in particular each having a corresponding spring rate.

9. Piston device according to one of the preceding claims,

-wherein the guide element (3) is of hollow-cylindrical design,

-wherein the guide element (3) is configured like a sleeve, and

-wherein the guide element (3) has a flange on one end, the flange comprising a shape resembling a circular disc.

10. A slave or master cylinder device (30) for a clutch or brake operating device of a motor vehicle, having:

-a piston device (1) according to any of the preceding claims,

-a bearing arrangement (31) for actuating the clutch device, having an outer ring element (32) and an inner ring element (33), between which rolling bodies are arranged,

-wherein the moving means (2) of the piston means (1) abuts indirectly or directly against the bearing means (31).

Technical Field

The present invention relates to a piston arrangement for a slave cylinder or master cylinder device of a clutch or brake actuating device of a motor vehicle, and to a slave cylinder or master cylinder device of a clutch or brake actuating device of a motor vehicle.

Background

In the case of current clutch actuation devices, for example, the transmission of the clutch pedal force is usually effected via a hydraulic system. The clutch is actuated here by a so-called central clutch. The central decoupler assumes the task of the slave cylinder and of the release bearing.

It is known that a central decoupler (also called concentric slave cylinder CSC) is positioned directly on the transmission input shaft in the transmission housing. Thereby, movable components in the separation system are reduced, wear and fault effects are minimized.

Furthermore, the central decoupler also comprises a rigidly designed or highly rigid piston element, by the movement of which the clutch can be engaged and disengaged.

Disclosure of Invention

Against this background, the object of the present invention is to provide a piston arrangement for a slave cylinder or master cylinder device of a clutch or brake actuating device and a slave cylinder or master cylinder device, which can be produced cost-effectively and material-saving and which has a reduced rigidity compared to known piston arrangements and slave cylinder or master cylinder devices, but preferably without impairing the function and service life.

In other words, it is preferably the object of the invention to reduce the high rigidity values in the piston device and/or in the slave cylinder or master cylinder arrangement in order to obtain greater flexibility of the individual components of the piston device and/or of the slave cylinder or master cylinder arrangement without impairing the function and the service life.

Both objects are achieved by the features of the present invention. Further advantageous developments are the subject matter below.

In a first aspect of the invention, a piston arrangement for a slave cylinder or a master cylinder device of a clutch or brake actuating device of a motor vehicle comprises a displacement device for displacing a bearing arrangement of the slave cylinder or the master cylinder device.

The piston device furthermore comprises a guide element along which the displacement device is arranged in a linearly guided and linearly displaceable manner.

Furthermore, the displacement device has a spring and/or damping element for bearing against the bearing device indirectly or directly. In this way, the stiffness value or rigidity within the piston device can be reduced. In other words, the flexibility within the piston device can be increased and at the same time the function of force transmission is ensured. By means of the spring and/or the damping element, it is furthermore possible that the wear and service life of the piston device are not negatively influenced, since, in addition, materials known to date can be used for the components of the piston device.

The displacement device can be formed here solely by the spring and/or the damping element. In this way, it is possible to replace the piston element used hitherto of the piston arrangement, for example of the central separator, by a spring and/or a damping element. The construction of the piston device is thus significantly simplified.

In the case of a moving element formed solely by a spring and/or damping element, the spring and/or damping element can be moved together with the guide element in order to ensure force transmission.

Alternatively to this, the displacement device may comprise a piston assembly.

In this case, it is possible for the displacement device to comprise a piston assembly which is hollow-cylindrically formed in order to be able to accommodate the shaft in the middle thereof, wherein the piston assembly can have two piston elements which are formed separately from one another and between which the spring and/or damping element is arranged. The piston device can be retrofitted to existing piston devices in a simple manner or with little effort, or can be retrofitted to existing piston devices, wherein the same materials as those used for the old piston device can be used for the new piston device.

Furthermore, the first piston element of the piston assembly of the displacement device can comprise a first axial end side, by means of which the first piston element can be arranged on the outer ring element of the bearing device. Furthermore, the first piston element can comprise a second axial end side, which has a receptacle in which a spring and/or a damping element is arranged. This design with the receptacle fixes the relative position of the spring and/or damping element with respect to the first piston element.

Furthermore, the first axial side can have a projection which is formed in a circular ring shape in order to form a support for the outer ring element of the bearing device by means of the projection in the radial direction.

It is also possible for the receptacle on the second axial end to be designed as a circular recess. The correspondingly configured spring and/or damping element can therefore be reliably positioned in the receptacle in a simple manner.

Furthermore, the first piston element can have a hollow-cylindrical shape and/or a shape resembling a circular-ring-shaped disk. By means of this embodiment, a simple rotationally symmetrical embodiment is possible by means of a plurality of production methods.

Furthermore, the second piston element of the piston assembly of the displacement device may comprise a third axial end side, which is arranged opposite the first piston element of the piston assembly of the displacement device.

The third axial side can comprise a receptacle in which a spring and/or a damping element is arranged. By means of this design, the relative position of the spring and/or damping element with respect to the second piston element can be fixed or ensured.

Furthermore, the receptacle on the third axial end can be designed as an annular recess. The correspondingly configured spring and/or damping element can therefore be reliably positioned in the receptacle in a simple manner.

Furthermore, the second piston element can have a hollow-cylindrical shape. By means of this embodiment, a simple rotationally symmetrical embodiment is possible by means of a plurality of production methods.

Furthermore, a spring and/or a damping element can be arranged in a receptacle on the second axial side of the first piston element and in a receptacle on the third axial side of the second piston element, which are opposite one another, in particular the first end side and the third end side thereof. By positioning within the receptacle, the movement of the spring and/or damping element in the axial direction and in the radial direction is limited, thereby ensuring the relative position with respect to the piston element.

The spring and/or the damping element can also have a material which has a lower rigidity than the material of the moving device, in particular than the material of the piston element of the piston assembly of the moving device. In this way, the rigidity of the piston device can be reduced.

It is also possible for the spring and/or the damping element to be designed as a circular disk. This design simplifies the assembly of the piston device.

It is also conceivable that the receptacles of the first and second piston elements and the spring and/or damping element are adapted to one another with regard to their size and shape. Thereby, noise generated by the movement of the piston element and the spring and/or damping element can be avoided, but at the same time the function of the piston device is improved.

Furthermore, the spring and/or damping element can have a rubber material or be designed as a leaf spring or as a spring ring or as a disk spring or as a helical spring, in particular each having a corresponding spring rate. The above possibility is a simple solution for realizing a spring and/or damping element.

Furthermore, the guide element can be designed in the form of a hollow cylinder, wherein the guide element can be designed like a sleeve.

Furthermore, the guide element can have a flange on one end, which flange comprises a shape resembling a circular disk.

In both cases, the guide element can be produced in a simple manner, for example by a deep-drawing process.

It is also conceivable for the piston element of the piston assembly of the displacement device to be arranged displaceably on the guide element on the outside. Thus, the piston element may, for example, engage or disengage the clutch.

A second aspect of the invention comprises a slave cylinder or master cylinder apparatus for a clutch or brake operating apparatus of a motor vehicle.

It is noted that the features of the piston arrangement, as mentioned under the first aspect, can be used in a slave cylinder or a master cylinder device, either individually or in combination with each other.

In other words, the features mentioned above under the first aspect of the invention in relation to the piston device can also be combined with other features here under the second aspect of the invention.

Accordingly, a slave cylinder or master cylinder device for a clutch or brake actuating device of a motor vehicle has a piston arrangement according to the first aspect.

Furthermore, the slave cylinder or master cylinder device comprises a bearing arrangement for actuating the clutch device, which has an outer ring element and an inner ring element, between which rolling bodies are arranged.

The piston device rests with its displacement device indirectly or directly against the bearing device.

In this way, the flexibility of the slave cylinder or master cylinder device or piston arrangement can be increased.

Furthermore, the spring and/or damping element can be arranged such that a movement of the spring and/or damping element causes a movement of the bearing arrangement, wherein the rigidity of the piston arrangement can be reduced by using the spring and/or damping element.

The inventive concepts described above are expressed supplementarily in other words below.

The concept preferably relates, for the sake of simplicity, to a piston arrangement and/or a slave cylinder or master cylinder device having a piston arrangement, which is designed to be flexible, as a result of which the rigidity of the piston arrangement and thus of the slave cylinder or master cylinder device can be reduced.

Drawings

The invention is explained in detail below with reference to embodiments in conjunction with the attached drawings. Here, it is schematically shown that:

FIG. 1 illustrates a cross-sectional view of a slave or master cylinder apparatus having an enlarged illustrated area in accordance with a first embodiment;

FIG. 2 illustrates a cross-sectional view of a slave or master cylinder apparatus having an enlarged illustrated area in accordance with a second embodiment; and

fig. 3 shows a sectional view of a slave cylinder or master cylinder device according to a third embodiment.

Detailed Description

In the following description, the same reference numerals are used for the same objects.

Fig. 1 shows a section through a slave or master cylinder device 30 according to a first exemplary embodiment with an enlarged region.

More precisely, fig. 1 shows a slave or master cylinder device 30 for a clutch or brake actuation device of a motor vehicle.

The slave cylinder or master cylinder device 30 has a piston arrangement 1 and a bearing arrangement 31 for actuating the clutch device, which has an outer ring element 32 and an inner ring element 33, between which rolling bodies are arranged.

As can be seen from fig. 1, the piston device 1 bears directly against the bearing device 31 by means of its displacement device 2, wherein the spring and/or damping element 4 is arranged such that a displacement of the spring and/or damping element 4 causes a displacement of the bearing device 31, wherein the rigidity of the piston device 1 can be reduced by using the spring and/or damping element 4.

Fig. 1 also shows, as already indicated, a piston arrangement 1 for a slave cylinder or master cylinder device 30 of a clutch or brake actuating device of a motor vehicle.

The piston device 1 comprises a displacement device 2 for displacing a bearing device 31 of the slave cylinder or master cylinder arrangement 30 and comprises a guide element 3 along which the displacement device 2 is arranged linearly guided and linearly displaceable.

Furthermore, the displacement device 2 has a spring and/or damping element 4 for indirectly bearing against the bearing device 31. As already mentioned, the rigidity of the piston device 1 can be reduced by means of the spring and/or the damping element 4.

Furthermore, as can be seen from fig. 1, the displacement device 2 comprises a piston assembly 7 which is hollow-cylindrically formed so that a shaft can be accommodated in the middle thereof.

The piston arrangement 7 has two piston elements 8, 11, which are formed separately from one another, between which the spring and/or damping element 4 is arranged.

Fig. 1 shows that the piston elements 8, 11 of the piston assembly 7 of the displacement device 2 are arranged displaceably on the outer side on the guide element 3.

Furthermore, the first piston element 8 of the piston assembly 7 comprises: a first axial end side a1, by means of which the first piston element 8 is arranged on the outer ring element 32 of the bearing arrangement 31; and a second end side a2, which has a receptacle 9 in which the spring and/or damping element 4 is arranged.

As can be seen from fig. 1, the first axial side a1 has a projection 10 which is formed in a circular ring shape in order to form a support for the outer ring element 32 of the bearing device 31 in the radial direction R by means of the projection.

Furthermore, the receptacle 9 on the second axial end a2 is designed as a circular ring-shaped recess, wherein the first piston element 8 has the shape of a hollow cylinder or a disk similar to a circular ring.

The second piston element 11 of the piston assembly 7 has a third axial end side a3 (see fig. 1), with which the second piston element 11 is arranged opposite the first piston element 8 of the piston assembly 7.

The third axial side a3 also has a receptacle 12 in which the spring and/or damping element 4 is likewise arranged.

Similarly to the above, the receptacle 12 is formed on the third axial end a3 as a circular ring-shaped recess, wherein the second piston element 11 has a hollow-cylindrical shape.

In summary, it can be provided that the spring and/or damping element 4 is arranged in the receptacle 9 on the second axial side a2 of the first piston element 8 and in the receptacle 12 on the third axial side A3 of the second piston element 11, the first and third end sides a1, A3 of which lie opposite one another.

With respect to the spring and/or damping element 4 it can be verified that: it has a material which is less rigid than the material of the moving means 2, in particular less rigid than the material of the piston elements 8, 11 of the piston assembly 7 of the moving means 2.

In the first exemplary embodiment according to fig. 1, the spring and/or damping element 4 is made of a rubber material.

As is shown in fig. 1, the spring and/or damping element 4 is designed as a circular disk, wherein the receptacles 9, 12 of the first and second piston elements 8, 11 and the spring and/or damping element 4 are adapted to one another in terms of their size and shape.

Fig. 1 furthermore shows that the guide element 3 is of hollow-cylindrical and sleeve-like design, wherein the guide element 3 has a flange at one end, which flange has a disk-like shape like a circular ring.

Fig. 2 shows a section through a slave or master cylinder device 30 according to a second exemplary embodiment with an enlarged region, while fig. 3 shows a section through a slave or master cylinder device 30 according to a third exemplary embodiment.

For reasons of simplicity and brevity, it is specified that: the embodiment which relates overall to fig. 1 is suitable for the most part and in a similar manner for the examples according to fig. 2 and 3, with only the differences between the individual examples being discussed below.

First it was determined in a comparison of fig. 1 and 2: in fig. 2, the spring and/or damping element 5 is designed as a leaf spring or as a spring ring or as a disk spring, in particular with a corresponding spring rate.

In contrast, the spring and/or damping element 4 according to the first embodiment is composed of a rubber material.

In contrast, in fig. 3, the spring and/or damping element 6 is designed as a helical spring, in particular with a corresponding spring rate.

However, the moving device 2 is formed only by the spring and/or damping element 6. In this case, the spring and/or damping element 6 moves together with the guide element 3 in order to ensure the force transmission.

Furthermore, the difference is to be seen in that the piston device 1 is indirectly supported by means of its displacement device 2 on the bearing device 31, wherein a retaining ring element 34 is arranged between the spring and/or damping element 6 and the bearing device 31.

Thus, with the three above-described embodiments, the forces introduced into the piston device for engaging or disengaging can be transmitted constantly, reliably and with low wear, and at the same time a high degree of flexibility can be achieved, without increased wear, for example.

List of reference numerals:

1 piston device

2 moving device

3 guide element

4 spring and/or damping element

5 spring and/or damping element

6 spring and/or damping element

7 piston assembly

8 first piston element

9 accommodating part

10 projection

11 second piston element

12 accommodating part

30 slave or master cylinder apparatus

31 bearing device

32 outer ring element

33 inner ring element

34 retaining ring element

A1 first axial end side

A2 second axial end side

A3 third axial end side