ELECTROMECHANICAL BRAKE BOOSTER, VEHICLE BRAKE SYSTEM, SUBASSEMBLY THEREFOR AND SLIDING ELEMENT

Abstract

An electromechanical brake booster for a vehicle brake system is disclosed. The electromechanical brake booster has an actuating element which is couplable to an electric motor via a transmission, a housing in which the actuating element is displaceably received, and at least one sliding element which is arranged between the housing and the actuating element. A vehicle brake system, subassembly therefor and sliding element is also disclosed.

Claims

1. An electromechanical brake booster for a vehicle brake system, comprising an actuating element which is couplable to an electric motor via a transmission, a housing in which the actuating element is displaceably received, and at least one sliding element which is arranged between the housing and the actuating element.

2. The electromechanical brake booster according to claim 1, wherein the at least one sliding element is configured to mount the actuating element in the housing in a displaceable and/or slidable manner.

3. The electromechanical brake booster according to claim 1, wherein the at least one sliding element is arranged in a direction transversely to a longitudinal axis of the actuating element between the housing and the actuating element.

4. The electromechanical brake booster according to claim 1, wherein the at least one sliding element is arranged between a surface, of the actuating element, running substantially parallel to the longitudinal axis of the actuating element, and the housing.

5. The electromechanical brake booster according to claim 1, wherein the at least one sliding element protrudes at least in some sections from a surface of the actuating element.

6. The electromechanical brake booster according to claim 1, wherein the actuating element has a ribbed structure at least in some sections, wherein the at least one sliding element is arranged on the ribbed structure and/or wherein the ribbed structure defines a surface of the actuating element.

7. The electromechanical brake booster according to claim 1, wherein the at least one sliding element extends substantially in a direction of the longitudinal axis of the actuating element.

8. The electromechanical brake booster according to claim 1, wherein the at least one sliding element has a sliding section and a fastening section which holds the at least one sliding element on the actuating element.

9. The electromechanical brake booster according to claim 1, wherein the at least one sliding element and/or a fastening section of the at least one sliding element is configured to be latched to the actuating element.

10. The electromechanical brake booster according to claim 1, wherein the at least one sliding element and/or a fastening section of the at least one sliding element is fixedly connected to the actuating element.

11. The electromechanical brake booster according to claim 1, wherein the at least one sliding element and/or the actuating element is produced by an injection-moulding operation.

12. The electromechanical brake booster according to claim 1, wherein the at least one sliding element and/or the actuating element and/or the housing (9) is produced from plastics.

13. The electromechanical brake booster according to claim 1, wherein the actuating element and/or the housing is produced from fibre-reinforced plastics.

14. The electromechanical brake booster according to claim 1, wherein the at least one sliding element is produced from a non-fibre-reinforced plastics.

15. The electromechanical brake booster according to claim 1, wherein a lubricant is arranged and/or is operatively positioned between the housing and the actuating element and/or the at least one sliding element.

16. The electromechanical brake booster according to claim 1, wherein the electromechanical brake booster has two sliding elements which are arranged spaced apart from one another in a direction transversely to a longitudinal axis of the actuating element.

17. The electromechanical brake booster according to claim 1, wherein the actuating element has at least one tooth row section which is couplable to the electric motor via the transmission.

18. A subassembly for a vehicle brake system having at least one electromechanical brake booster according to claim 1, and at least one brake cylinder which is couplable fluidically to at least one brake circuit of the vehicle brake system.

19. A vehicle brake system having a subassembly according to claim 18.

20. A sliding element for an electromechanical brake booster, wherein the electromechanical brake booster comprises an actuating element which is couplable to an electric motor via a transmission and a housing, in which an actuating element (1) is displaceably received, wherein a sliding element is configured to be arranged between the housing and the actuating element.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0040] Exemplary arrangements of the disclosure are described in more detail hereinafter with reference to the figures, in which schematically and by way of example:

[0041] FIG. 1 shows an actuating element;

[0042] FIG. 2 shows the actuating element according to FIG. 1 with two sliding elements; and

[0043] FIG. 3 shows an electromechanical brake booster.

DETAILED DESCRIPTION

[0044] FIG. 1 shows schematically an actuating element 1 of an electromechanical brake booster 8. The actuating element 1 is configured as a toothed rack module and has two tooth row sections 3 arranged diametrically opposing one another relative to the longitudinal axis 2 of the actuating element 1. The actuating element 1 is couplable by its tooth row sections 3 via a transmission to an electric motor.

[0045] Moreover, at least one sliding element 4 is provided, said sliding element being applied onto an arcuate ribbed structure 5 of the actuating element 1 or being fixedly arranged thereon (illustrated by the arrow in FIG. 1). The ribbed structure 5 defines or forms an outer surface 10 of the actuating element 1. The at least one sliding element 4 has a sliding section 6 and a fastening section 7 which can hold the at least one sliding element 4 on the actuating element 1.

[0046] The at least one sliding element 4 and/or the actuating element 1 is produced by an injection-moulding method. In one exemplary arrangement, the at least one sliding element 4 is produced from non-fibre-reinforced plastics, for example thermoplastics material, such as polyoxymethylene (POM).

[0047] FIG. 2 shows schematically the actuating element 1 according to FIG. 1 to which two sliding elements 4 have been fastened. The two sliding elements 4 extend in each case substantially in the direction of the longitudinal axis 2 of the actuating element 1. The sliding elements 4 are arranged spaced apart from one another in a direction transversely, for example perpendicularly, to a longitudinal axis 2 of the actuating element 1.

[0048] The two sliding elements 4 are fixedly connected or latched by their fastening section 7 to the actuating element 1 and thus captively attached to the actuating element 1. The two sliding elements 4 protrude in some sections from the outer surface 10 of the actuating element 1 or project thereover, for example substantially in the radial direction.

[0049] Moreover, reference is additionally made to FIG. 1 and the associated description.

[0050] FIG. 3 shows schematically an electromechanical brake booster 8 for a vehicle brake system. The electromechanical brake booster 8 has the actuating element 1 with the sliding elements 4 according to FIGS. 1 and 2. The electromechanical brake booster 8 also has a housing 9. The actuating element 1 is displaceably received in the housing 9.

[0051] The sliding elements 4 are arranged between the housing 9 and the actuating element 1, wherein the sliding elements 4 are configured to mount the actuating element 1 displaceably and/or slidably in the housing 9.

[0052] The sliding elements 4 are arranged in a direction transversely, in one exemplary arrangement, perpendicularly, to the longitudinal axis 4 of the actuating element 1 between the housing 9 and the actuating element 1. In one exemplary arrangement, the sliding elements 4 are arranged between the outer surface 10 of the actuating element 1, running substantially parallel to the longitudinal axis 2 of the actuating element 1, and the housing 9, wherein the sliding elements 4 protrude in some sections from the outer surface 10 of the actuating element 1 in the direction of the housing 9.

[0053] A lubricant can be additionally arranged and/or can be operative between the housing 9 and the actuating element 1 and/or the sliding element 4.

[0054] Moreover, reference is additionally made to FIGS. 1 and 2 and the associated description.

[0055] Optional features of the disclosure are denoted, in particular, by “can”. Accordingly, there are also developments and/or exemplary arrangements of the disclosure which additionally or alternatively comprise the respective feature or the respective features.

[0056] Isolated features can also be singled out from the presently disclosed combinations of features, if required, and used in conjunction with other features, by breaking up a structural and/or functional relationship potentially existing between the features in order to limit the subject matter of the claims.