VALVE BODY FOR A BRAKE SYSTEM OF A MOTOR VEHICLE AND HYDRAULIC UNIT

Abstract

A valve body is described for a braking system of a motor vehicle, having an insulating element inserted into a passthrough opening of the valve body, which is embodied to insulate a contact pin with respect to a surface of the passthrough opening, the insulating element being embodied integrally with the passthrough opening. A hydraulic unit is described for the braking system of the motor vehicle.

Claims

1.-12. (canceled)

13. A valve body for a braking system of a motor vehicle, comprising: at least one passthrough opening for receiving a contact pin for electrically connecting an electric motor and a control device of a hydraulic unit of the braking system of the motor vehicle, wherein the at least one passthrough opening extends from a first side of the valve body facing toward the electric motor to a second side of the valve body facing toward the control device; and an insulating element for insulating the contact pin with respect to a surface of the at least one passthrough opening, wherein the insulating element is integral with the at least one passthrough opening.

14. The valve body as recited in claim 13, wherein: the insulating element is inserted in positionally fixed fashion into the at least one passthrough opening, and a length of the insulating element being less than or equal to a length of the at least one passthrough opening.

15. The valve body as recited in claim 13, wherein the insulating element includes a plastic sleeve through which the at least one contact pin is passable.

16. The valve body as recited in claim 13, wherein the insulating element (16) is inserted in one of a nonpositively, a positively, and an intermaterially engaging fashion into the at least one passthrough opening.

17. The valve body as recited in claim 13, wherein the insulating element is staked to the valve body at an axial end portion of the at least one passthrough opening.

18. The valve body as recited in claim 17, wherein: the at least one passthrough opening includes a stepped bore, the at least one passthrough opening includes a first diameter at a first axial portion and a second diameter at a second axial portion, and the second diameter is smaller than the first diameter.

19. The valve body as recited in claim 13, wherein: the insulating element includes a diameter reduction on an inner circumference, the insulating element includes a first diameter at a first axial portion and a second diameter at a second axial portion, and the second diameter is smaller than the first diameter.

20. The valve body as recited in claim 13, wherein the insulating element is inserted into the at least one passthrough opening by way of a press fit.

21. A hydraulic unit for a braking system of a motor vehicle, comprising: an electric motor; a control device; and a valve body for a braking system of a motor vehicle, the valve body including: at least one passthrough opening for receiving a contact pin for electrically connecting an electric motor and a control device of a hydraulic unit of the braking system of the motor vehicle, wherein the at least one passthrough opening extends from a first side of the valve body facing toward the electric motor to a second side of the valve body facing toward the control device, and an insulating element for insulating the contact pin with respect to a surface of the at least one passthrough opening, wherein the insulating element is integral with the at least one passthrough opening, wherein the control device applies control to the electric motor and to the valve body.

22. The hydraulic unit as recited in claim 21, wherein the contact pin is immobilized by a press fit in a region of an opening, in which the contact pin is inserted, of a housing of the electric motor.

23. The hydraulic unit as recited in claim 21, wherein: the contact pin has a first diameter at a first axial portion and a second diameter at a second axial portion, the second diameter is smaller than the first diameter, and a diameter reduction of the insulating element forms a stop for the first axial portion of the contact pin.

24. The hydraulic unit as recited in claim 21, wherein: the contact pin is centered in the insulating element in such a way that a gap is present between a housing of the valve body and the contact pin at respective emergence points from the at least one passthrough opening.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The appended drawings are intended to provide further comprehension of the embodiments of the invention. They illustrate embodiments, and in conjunction with the description serve to explain principles and concepts of the invention.

[0020] Other embodiments, and many of the advantages recited, are evident in light of the drawings. The elements of the drawings which are depicted are not necessarily shown accurately to scale with one another.

[0021] FIG. 1 is an exploded view of a hydraulic unit in accordance with a preferred embodiment of the invention.

[0022] FIG. 2 is a section view of section plane A-A, shown in FIG. 1, of the hydraulic unit in an assembled state, in accordance with the preferred embodiment of the invention.

[0023] FIG. 3 is an enlarged depiction of the section view shown in FIG. 2, in accordance with the preferred embodiment of the invention.

[0024] FIG. 4 schematically depicts a contact pin, inserted into a passthrough opening of the valve body, at an axial end portion of the passthrough opening, in accordance with the preferred embodiment of the invention.

DETAILED DESCRIPTION

[0025] In the Figures, identical reference characters designate identical or functionally identical elements, components, or constituents unless indicated to the contrary.

[0026] FIG. 1 is an exploded view of a hydraulic unit in accordance with a preferred embodiment of the invention.

[0027] Hydraulic unit 1 for the braking system of the motor vehicle has a valve body 10, an electric motor 2, and a control device 3 for applying control to electric motor 2 and to valve body 10.

[0028] Hydraulic unit 1 furthermore has a linkage that is connected to electric motor 2 and drives a pump or plunger apparatus.

[0029] Valve body 10 has a passthrough opening 12 for receiving a contact pin 14 of electric motor 2. Contact pin 14 of electric motor 2 serves to electrically connect electric motor 2 and control device 3 of hydraulic unit 1. When hydraulic unit 1 is in the assembled state, electric motor 2 is disposed on a first side 10a of valve body 10. When hydraulic unit 1 is in the assembled state, control device 3 is disposed on valve body 10 on a second side 10b of valve body 10. Valve body 10 furthermore has a housing 10c.

[0030] In addition, when hydraulic unit 1 is in the assembled state, a plurality of valves 4 are inserted into corresponding openings of valve body 10. Control device 3 furthermore has a board 3a on which corresponding receptacles for valves 4 are disposed.

[0031] When hydraulic unit 1 is in the assembled state, contact pin 14 of electric motor 2 extends through passthrough opening 12 from first side 10a of valve body 10 facing toward electric motor 2 to second side 10b of valve body 10 facing toward control device 3; and on second side 10b of valve 10 facing toward control device 3 it emerges from valve body 10 and is received in control device 3 in a plug-in contact (not shown in FIG. 1).

[0032] Valve body 10 furthermore has an insulating element (not shown in FIG. 1) that is embodied to insulate contact pin 14 with respect to a surface of passthrough opening 12. The insulating element is embodied integrally with passthrough opening 12. Alternatively to the provision of a passthrough opening 12 in valve body 10, for example, a plurality of passthrough openings can be provided in valve body 10.

[0033] FIG. 2 is a section view of section plane A-A, shown in FIG. 1, of the hydraulic unit in the assembled state, in accordance with the preferred embodiment of the invention.

[0034] Also provided in the depiction according to FIG. 2, in addition to valve body 10 and electric motor 2, is a spindle drive 5, likewise connected nonrotatably to electric motor 2, for driving a plunger apparatus 6, which drive is embodied to generate a hydraulic pressure in valve body 10.

[0035] Contact pin 14 of electric motor 2 for electrically connecting electric motor 2 and control device 3 of hydraulic unit 1 is depicted in the assembled state in FIG. 2. In this context, contact pin 14 is inserted into passthrough opening 12 of valve body 10 in such a way that it is passed through insulating element 16 that is inserted into passthrough opening 12 or embodied integrally with passthrough opening 12. Contact pin 14 is thereby insulated from surface 12a of passthrough opening 12.

[0036] Insulating element 16 is inserted in positionally fixed fashion into passthrough opening 12. A length L1 of insulating element 16 is preferably shorter than a length L2 of passthrough opening 12. Alternatively, the length of insulating element 16 can correspond, for example, to the length of passthrough opening 12.

[0037] Insulating element 16 is preferably constituted by a plastic sleeve, i.e. a plastic tube, through which contact pin 14 is passed.

[0038] Insulating element 16 is preferably inserted in positively engaging fashion in passthrough opening 12. Alternatively, insulating element 16 can be inserted, for example, in nonpositively or intermaterially engaging fashion into passthrough opening 12.

[0039] Passthrough opening 12 is constituted by a stepped bore. Passthrough opening 12 has a first diameter D1 at a first axial portion 12b and a second diameter D2, which is smaller than first diameter D1, at a second axial portion 12c.

[0040] Alternatively to staking of insulating element 16 in passthrough opening 12, and to the provision of the stepped bore in passthrough opening 12, it is conceivable, for example, to insert insulating element 16 into passthrough opening 12 by way of a press fit.

[0041] Contact pin 14 is furthermore immobilized by a press fit in the region of an opening 2a of a housing of electric motor 2 into which contact pin 14 is inserted.

[0042] FIG. 3 is an enlarged depiction of the section view shown in FIG. 2, in accordance with the preferred embodiment of the invention.

[0043] Insulating element 16 has a diameter reduction 16b on an inner circumference 16a. Insulating element 16 furthermore has a first diameter D3 at a first axial portion 16c and a second diameter D4 at a second axial portion 16d. Second diameter D4 is smaller than first diameter D3.

[0044] Contact pin 14 has a first diameter D5 at a first axial portion 14a, and a second diameter D6 at a second axial portion 14b. Second diameter D6 is smaller than first diameter D5. Diameter reduction 16b of insulating element 16 thus forms a stop for the first axial portion of contact pin 14. Contact pin 14 is centered in insulating element 16 in such a way that a gap 17 is constituted between a housing 10c of valve body 10 and contact pin 14 at respective emergence points 12d, 12e from the passthrough opening.

[0045] FIG. 4 schematically depicts a contact pin, inserted into a passthrough opening of the valve body, at an axial end portion of the passthrough opening, in accordance with the preferred embodiment of the invention.

[0046] Insulating element 16 is staked to valve body 10 at an axial end portion 12e of passthrough opening 12. Alternatively, as described above, insulating element 16 can be inserted into passthrough opening 12 of valve body 10, for example, by way of a press fit.

[0047] Although the present invention has been described above with reference to preferred exemplifying embodiments, it is not limited thereto but is instead modifiable in numerous ways. In particular, the invention can be changed or modified in a multiplicity of ways without deviating from the essence of the invention.

[0048] For example, a manner in which insulating element 16 is fastened in passthrough opening 12 of valve body 10, and a material of insulating element 16, can be modified or adapted to particular structural or design-related requirements of hydraulic unit 1.