The invention provides an electrical connection for an electric motor having a casing which houses a drive device, embodied especially a stator in a casing interior. The drive device is contacted via a conductor, embodied especially in the form of a pin. The conductor is guided from the exterior int
The invention provides an electrical connection for an electric motor having a casing which houses a drive device, embodied especially a stator in a casing interior. The drive device is contacted via a conductor, embodied especially in the form of a pin. The conductor is guided from the exterior into the interior of the casing via a casing opening. A cylindrical sealing element is provided on the casing opening in the casing interior to seal the conductor from the casing opening. The sealing element is provided with a continuous collar and a through-opening through which the conductor extends and in which the conductor is sealed in the through-opening via at least one radial sealing lip that is formed in the through-opening on the sealing element and that rests on a surface of the conductor. The conductor is then sealed towards the housing via at least one axial sealing lip that is formed on the collar and that rests on an inside of the casing. The electrical connection according to the invention can be used for a motor, especially for driving a motor cooling fan.
대표청구항▼
1. An electrical connection for an electric motor having a motor housing with an interior in which a stator of the electric motor is accommodated, the electrical connection being connected to the stator via an electrical conductor in the form of a pin extending in an axial direction, that is routed
1. An electrical connection for an electric motor having a motor housing with an interior in which a stator of the electric motor is accommodated, the electrical connection being connected to the stator via an electrical conductor in the form of a pin extending in an axial direction, that is routed from outside the housing into the housing interior via a housing opening, the electrical connection comprising a sleeve-shaped sealing element that is accommodated in a separate sealing sleeve which is mounted within the housing interior in a prestressed fashion between the stator and the housing of the electric motor, the sealing element being provided against an inner surface of the housing about the housing opening in order to seal the electrical conductor in relation to the housing opening, the sealing element having a circumferential collar with an outer diameter which is greater than the housing opening and overlaps the housing opening and a through opening through which the electric conductor extends, wherein at least one inner radial sealing lip which is situated on the sealing element in the through opening and which rests against a surface of the electric conductor seals the conductor in the through opening, andwherein at least one outer axial sealing lip which extends in the axial direction is embodied on the collar and rests against the inner surface of the housing to seal the sealing element in relation to the housing. 2. The electrical connection as recited in claim 1, wherein the prestressing of the sealing sleeve is exerted by screws that are provided for screw-mounting the stator to the housing of the electric motor. 3. The electrical connection as recited in claim 2, wherein the screws are self-tapping screws. 4. The electrical connection as recited in claim 1, wherein the sealing element has at least one outer radial sealing lip which is situated opposite from the at least one inner radial sealing lip and which rests in a sealed fashion in a receiving opening of the sealing sleeve. 5. The electrical connection as recited in claim 2, wherein the sealing element has at least one outer radial sealing lip which is situated opposite from the at least one inner radial sealing lip and which rests in a sealed fashion in a receiving opening of the sealing sleeve. 6. The electrical connection as recited in claim 3, wherein the sealing element has at least one outer radial sealing lip which is situated opposite from the at least one inner radial sealing lip and which rests in a sealed fashion in a receiving opening of the sealing sleeve. 7. The electrical connection as recited in claim 1, wherein the sealing element has at least one inner axial sealing lip which extends in the axial direction and is situated opposite from the at least one outer axial sealing lip and is provided in a receiving opening of the sleeve for the collar. 8. The electrical connection as recited in claim 2, wherein the sealing element has at least one inner axial sealing lip which extends in the axial direction and is situated opposite from the at least one outer axial sealing lip and is provided in a receiving opening of the sleeve for the collar. 9. The electrical connection as recited in claim 3, wherein the sealing element has at least one inner axial sealing lip which extends in the axial direction and is situated opposite from the at least one outer axial sealing lip and is provided in a receiving opening of the sleeve for the collar. 10. The electrical connection as recited in claim 4, wherein the sealing element has at least one inner axial sealing lip which extends in the axial direction and is situated opposite from the at least one outer axial sealing lip and is provided in a receiving opening of the sleeve for the collar. 11. The electrical connection as recited in claim 6, wherein the sealing element has at least one inner axial sealing lip which extends in the axial direction and is situated opposite from the at least one outer axial sealing lip and is provided in a receiving opening of the sleeve for the collar. 12. The electrical connection as recited in claim 5, wherein the sealing element has at least one inner axial sealing lip which extends in the axial direction and is situated opposite from the at least one outer axial sealing lip and is provided in a receiving opening of the sleeve for the collar. 13. The electrical connection as recited in claim 1, wherein the at least one inner radial sealing lip comprises two circumferential radial sealing lips that are spaced axially apart from each other in the axial direction. 14. The electrical connection as recited in claim 1, wherein the at least one outer axial sealing lip comprises two axial concentric sealing lips with different radii that extend in the axial direction. 15. The electrical connection as recited in claim 1, wherein the sealing element is accommodated in a corresponding stepped receiving opening in the sealing sleeve so that only the at least one axial sealing lip protrudes from an annular end surface of the sealing sleeve. 16. The electrical connection as recited in claim 4, wherein the at least one outer radial sealing lip is on an outer circumferential surface of the sealing element and rests in a sealed fashion against an inner surface of the receiving opening in the sealing sleeve. 17. The electrical connection as recited in claim 4, wherein the at least one outer radial sealing lip comprises two circumferential outer radial sealing lips on an outer circumferential surface of the sealing element that are spaced axially apart from each other in the axial direction and rest in a sealed fashion against an inner surface of the receiving opening in the sealing sleeve. 18. The electrical connection as recited in claim 7, wherein the at least one inner axial sealing lip rests in a sealed fashion against an annular surface in the receiving opening of the sealing sleeve for the collar in a mounted state of the sealing sleeve. 19. The electrical connection as recited in claim 1, wherein the through opening of the sealing element tapers in a funnel-shaped fashion towards the inside. 20. The electrical connection as recited in claim 10, wherein the inner and outer radial sealing lips and the inner and outer axial sealing lips are embodied as elastically deformable. 21. The electrical connection as recited in claim 1, wherein the collar of the sealing element extends between an end of the sealing sleeve and the housing. 22. The electrical connection as recited in claim 1, wherein the inner radial sealing lip extends circumferentially around the sealing element. 23. The electrical connection as recited in claim 1, wherein the outer axial sealing lip extends in a ring-like manner around the housing opening.
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이 특허에 인용된 특허 (15)
Conley, Donald W., Apparatus for and method of sealing a lead exit on a motor.
Furukawa, Hideharu; Ishikawa, Yoshihiko; Shimada, Toshio; Sugawara, Wataru, Protective device for a hermetically sealed type compressor and a hermetically sealed compressor listing same.
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