Housing of a driving device
View Patent ↗A housing of a driving device, in particular an electric motor adjustment drive for a motor vehicle, has a housing opening, which is covered by a gas-permeable membrane, in particular a membrane that is impermeable to liquid. The housing opening is surrounded by a collar contour, which is interrupted locally at the circumference and within which the membrane lies.
1. A housing of a driving device, the housing comprising:
a housing body having a housing opening formed therein;
a gas-permeable membrane covering said housing opening; and
a collar contour surrounding said housing opening, said collar contour being interrupted locally at a circumference by a local interruption, said collar contour being formed of at least two collar teeth and collar grooves, said collar teeth defining an obliquely running inner wall on a side of said collar teeth facing said housing opening for tapering said collar contour toward said housing opening;
an annular support for said membrane, said annular support provided between said collar contour and said housing opening.
2. The housing according to claim 1 , wherein:
said housing body has a housing wall; and
said collar contour forms an annular surface, which is spaced apart from said housing wall and is interrupted.
3. The housing according to claim 1 , wherein a circumferential arc length of said collar teeth and said collar grooves are equal.
4. The housing according to claim 1 , wherein said gas-permeable membrane is fixed or joined within said collar contour by means of ultrasonic welding.
5. The housing according to claim 1 , wherein, in a single operation, said gas-permeable membrane is mounted on said annular support surrounding said housing opening within said collar contour and fixed there.
6. The housing according to claim 5 , wherein said gas-permeable membrane is bonded by a combined stamping and welding device.
7. The housing according to claim 1 , wherein said collar contour is formed by four said collar teeth and four said collar grooves.
8. The housing according to claim 1 , wherein an arc length of said collar teeth is less than that of said collar grooves.
9. The housing according to claim 1 , wherein: said local interruption of said collar contour extends at least approximately as far as a plane in which said housing opening lies.
10. The housing according to claim 1 , wherein said collar contour tapers conically toward said housing opening on said inner wall.
11. An electric motor adjustment drive for a motor vehicle, comprising:
a housing containing a housing body having a housing opening formed therein, a gas-permeable membrane covering said housing opening, and a collar contour surrounding said housing opening, said collar contour being interrupted locally at a circumference by a local interruption, said collar contour being formed of at least two collar teeth and collar grooves, said collar teeth defining an obliquely running inner wall on a side of said collar teeth facing said housing opening for tapering said collar contour toward said housing opening;
an annular support for said membrane, said annular support provided between said collar contour and said housing opening.