Housing part having a service access

Patent metadata

Field	Value
Publication number	US-11994203-B2
Application number	US-202318163512-A
Country	US
Kind code	B2
Filing date	Feb 2, 2023
Priority date	Feb 8, 2022
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

A housing part and drive system for a vehicle, including a housing part, having a service access for the actuation of at least one screw that is arranged in the interior of a housing assigned to the housing part. The housing part has an insert is fitted into a provided opening and in which at least one receiving slot is provided, which at least one receiving slot is open at an inner end and advantageously projects over a screw head of one of the at least one screw and is closed at an outer end by a detachable sealing plug. The receiving slot is advantageously dimensioned so as to serve as a guide for a screwdriver.

First claim

The invention claimed is:

1. A housing part having a service access configured to provide access for actuation of at least one screw arranged in an interior of a housing assigned to the housing part with a fixed relative position with respect to the service access, comprising:
an opening defined in the housing part;
a shoulder of the housing part that is inwardly directed and encloses the opening and which has an inner lateral surface;
an insert having an outer lateral surface correlating with the inner lateral surface and which is inserted into and connected to the shoulder;
a seal configured to seal off the inner lateral surface and the outer lateral surface being sealed off with respect to one another;
at least one receiving slot arranged in the insert and configured for the actuation of the at least one screw, the at least one receiving slot is open at an inner end; and
a detachable sealing plug configured to close an outer end of the at least one receiving slot,
wherein the shoulder has at least two end surfaces which lie orthogonally with respect to the inner lateral surface and in one plane and to which the insert it is fastened in an abutting manner, and
wherein an inner end of the at least one receiving slot is spaced apart from and faces the at least one screw so that only a portion of a screw head of the at least one screw projects into the at least one receiving slot.

2. The housing part having the service access as claimed in claim 1 , wherein the at least one receiving slot has a rotationally symmetrical peripheral surface with a cylindrical portion toward the outer end.

3. The housing part having the service access as claimed in claim 2 , wherein the cylindrical portion is dimensioned so as to serve as a guide for a screwdriver.

4. A housing part having a service access configured to provide access for actuation of at least one screw arranged in an interior of a housing assigned to the housing part with a fixed relative position with respect to the service access, comprising:
an opening defined in the housing part;
a shoulder of the housing part that is inwardly directed and encloses the opening and which has an inner lateral surface;
an insert having an outer lateral surface correlating with the inner lateral surface and which is inserted into and connected to the shoulder;
a seal configured to seal off the inner lateral surface and the outer lateral surface being sealed off with respect to one another;
at least one receiving slot arranged in the insert and configured for the actuation of the at least one screw, the at least one receiving slot is open at an inner end; and
a detachable sealing plug configured to close an outer end of the at least one receiving slot,
wherein the rotationally symmetrical peripheral surface has a further cylindrical portion toward the inner end, with a further diameter which is greater than a diameter of the cylindrical portion toward the outer end.

5. The housing part having the service access as claimed in claim 2 , wherein the rotationally symmetrical peripheral surface has a conically tapering portion toward the inner end.

6. The housing part having the service access as claimed in claim 4 , wherein portions of the rotationally symmetrical peripheral surface are connected to one another via convex portions.

7. The housing part having the service access as claimed in a claim 1 , wherein the insert is composed of plastics material.

8. The housing part having the service access as claimed in claim 1 , wherein the detachable sealing plug is sealed off with respect to the insert by a peripheral seal in the at least one receiving slot.

9. The housing part having the service access as claimed in claim 1 , wherein the housing part is a sub-region of a clutch housing of a drive system for a vehicle.

10. The housing part having the service access as claimed in claim 5 , wherein portions of the rotationally symmetrical peripheral surface are connected to one another via convex portions.

11. A drive system for a vehicle, comprising:
a transmission block that is housed by a transmission housing and a sub-region of a clutch housing is a housing part having a service access configured to provide access for actuation of at least one screw arranged in an interior of the transmission housing assigned to the housing part with a fixed relative position with respect to the service access, comprising:
an opening defined in the housing part;
an inwardly directed shoulder of the housing part that encloses the opening and which has an inner lateral surface;
an insert having an outer lateral surface correlating with the inner lateral surface and which is inserted into and connected to the shoulder;
a seal configured to seal off the inner lateral surface and the outer lateral surface being sealed off with respect to one another;
at least one receiving slot arranged in the insert and configured for the actuation of the at least one screw, the at least one receiving slot is open at an inner end;
a detachable sealing plug configured to close the at least one receiving slot at an outer end; and
an electrical interface at which at least one screw connection with the at least one screw is arranged being provided within the transmission block,
wherein the at least one screw projects into the at least one receiving slot,
wherein the service access is arranged at a distance in a range of 3 cm to 15 cm from a motor flange.

12. The housing part having the service access as claimed in claim 1 , wherein the outer end of the at least one receiving slot is offset from an outer surface of the slot.

13. The housing part having the service access as claimed in claim 1 , wherein an outer surface of the detachable sealing plug is flush with the housing part.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Nickel Robert

Classifications

• F16H57/031 Primary

  characterised by covers or lids for gearboxes · CPC title

• F16H57/029 Primary

  characterised by means for sealing the gearboxes, e.g. to improve airtightness · CPC title

• F16H2057/02034

  Gearboxes combined or connected with electric machines · CPC title

• F16H2057/02043

  for vehicle transmissions · CPC title

• F16D23/00 Primary

  Details of mechanically-actuated clutches not specific for one distinct type · CPC title