# US 11,994,190 B2 · Linear drive with control housing

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,994,190 B2
- Document ID: US11994190B2
- Status: Granted
- Kind: B2
- Application number: 17/757,497
- Filed: 2020-12-14
- Published: 2023-01-19
- Granted: 2024-05-28
- Earliest claimed: 2019-12-17
- Assignees: DewertOkin KFT
- Applicants: DewertOkin KFT
- Inventors: Péter Bartus; Zsolt Mojzes
- Web page: https://patentgrep.com/patent/US11994190B2

## CPC

- F16H 25/20: Screw mechanisms (with automatic reversal F16H25/12)
- F16H 57/02: Gearboxes; Mounting gearing therein
- H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)}
- H02K 7/116: with gears
- H02K 11/30: Structural association with control circuits or drive circuits
- H02K 11/33: Drive circuits, e.g. power electronics (H02K11/38 takes precedence)
- H02K 41/02: Linear motors; Sectional motors
- F16H 2025/2031: {Actuator casings}
- F16H 2025/209: {using worm gears}
- F16H 2057/02034: {Gearboxes combined or connected with electric machines}
- H02K 7/06: Means for converting reciprocating motion into rotary motion or vice versa
- H02K 7/1166: {comprising worm and worm-wheel (structural association with bearings specially adapted for worm gear drives H02K7/081)}
- F16H: GEARING
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

Linear drive with a gear housing extending along a longitudinal axis, in which a spindle is rotatably mounted with a worm wheel connected to it in a rotationally fixed manner, a spindle nut running on the spindle, which is adjustable on the spindle between a retracted position and an extended position and which acts on a lifting tube. The spindle nut is arranged in the retracted position guide tube and retracted in the region of a rear end of the guide tube, and thus the lifting tube is also retracted into the guide tube. The spindle nut is arranged at a front end of the guide tube in the extended position. An electric motor drives the screw, which extends along a transverse axis extending transversely to the longitudinal axis, wherein the electric motor is accommodated in a motor housing which is connected to the gear housing. Furthermore, a control system is arranged in a control housing. In order to simplify the assembly of the control housing, a connection is formed between the control housing and the drive housing, which is designed in such a way that the latter is simultaneously electrically connected to the drive housing during the mechanical attachment.

## Claims

### Claim 1

A linear drive, comprising:
a gear housing extending along a longitudinal axis, in which a spindle extending along the longitudinal axis is rotatably mounted with a worm wheel connected to it in a rotationally fixed manner, a spindle nut on the spindle, which is adjustable on the spindle between a retracted position and an extended position and which acts on a lifting tube,
wherein the spindle nut in the retracted position is arranged retracted in a stationary guide tube receiving the spindle nut in the region of a rear end of the guide tube and thus the lifting tube is retracted into the guide tube,
wherein the spindle nut is arranged at a front end of the guide tube in the extended position and thus the lifting tube is extended out of the guide tube, a worm driven by an electric motor extending along a transverse axis extending transversely to the longitudinal axis, meshes with the worm wheel,
wherein the electric motor is accommodated in a motor housing which is connected to the gear housing, and a control system arranged in a control housing,
wherein the gear housing and the motor housing form a drive housing,
wherein a connection is formed between the control housing and the drive housing, which is adapted to simultaneously realize an electrical connection when mechanically fastened to the drive housing,
wherein the control housing comprises a first and a second housing wall which enclose between them a housing angle, in that an insertion system is formed between the first housing wall and the gear housing adjoining the latter in the installed position, and in that a connector system is formed between the second housing wall and the gear housing adjoining the latter,
wherein the connector system comprises a plug on one mating partner and a complementary socket on the other mating partner,
wherein the plug comprises two separate connector parts, a first connector part for the power supply and a second connector part for the data supply.

### Claim 2 (depends on 1)

The linear drive according to claim 1, wherein the insertion system is designed as a linear guide system.

### Claim 3 (depends on 1)

The linear drive according to claim 1, wherein the connector system comprises a union nut.

### Claim 4 (depends on 1)

The linear drive according to claim 1, wherein the connection comprises the connector system.

### Claim 5 (depends on 1)

The linear drive according to claim 1, wherein the connection comprises the connector system and the insertion system.

### Claim 6 (depends on 1)

The linear drive according to claim 1, wherein the insertion system comprises a dovetail guide.