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A technology of driving device and electric motor, which is applied in the direction of transmission device, gear transmission device, transmission device parts, etc., can solve the problem of reduced service life of the worm gear system, and achieve the effect of simple and cheap installation

Active Publication Date: 2020-05-12
DR ING H C F PORSCHE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the described embodiment is that the gear backlash is compensated via an axially displaceable pot bearing, which is prestressed via a spring element, which absorbs the axial load and radial loads, and the sliding surfaces of the pot support and the housing against each other are subject to wear in case of axial displacement of the pot support, as a result of which the service life of the worm gear system is reduced

Method used

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Embodiment Construction

[0037] figure 1 An electric drive 10 with an electric motor 20 and a worm gear 30 is shown. The electric motor 20 and the worm gear mechanism 30 are arranged in a common housing 40 which has an upper part 42 and a lower part 44 which abut against each other in a separation plane 47 .

[0038] The worm gear mechanism 30 includes a worm wheel 32 and a gear 34 meshing with the worm wheel 32 . The worm wheel 32 is fixed at the free end of the rotor shaft 28 of the electric motor 20, the rotor shaft 28 is fixedly connected to the rotor of the electric motor 20 so as to rotate with the rotor, and is mounted in the electric motor via bearings (not shown in the drawings). . Gear 34 is mounted on an output shaft 36 and is fixedly connected thereto for rotation therewith, for example via a positive locking or non-positive connection.

[0039]The electric motors 20 each have a motor end pot 22 , 24 at their axial ends. The motor proximal end pot 22 is arranged at the axial end facing...

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Abstract

The invention relates to a drive (10) having a housing (40) in which an electric motor (20) and a worm gear (30) are arranged; the worm gear (30) has a worm wheel (32) and a gear (34), which is arranged on the rotor shaft (21) of the electric motor (20), which meshes with the worm wheel (32) and is fixedly connected to the output shaft (36) so as to rotate with the output shaft and the motor (20) is mounted axially in the housing (40) with an axial end via the stop element (46), and with the opposite axial end via the axial clamping element (50) , the axial clamping element (50) has a spring element (52), a separate floating holding element (54) and a separate elastomer element (56), the holding element (54) is arranged axially on the spring element (52) and the elastomeric element (56).

Description

technical field [0001] The invention relates to an electric drive with an electric motor and a worm gear mechanism. Background technique [0002] The worm gear mechanism belongs to the standard gear mechanism and is usually used as a reduction gear mechanism through which a high reduction ratio can be obtained. For example, relatively fast rotary electric motors can be used for slow adjusting movements by means of high reduction ratios which can be achieved by means of a worm gear mechanism, for which high torques are provided. This type of worm gear mechanism is used in automotive applications, for example in electric power steering systems, in window regulator drives or in sunroof drives. [0003] A worm gear mechanism typically has a worm gear that is meshed with the worm gear, the worm gear is driven by an electric motor via a drive shaft, and the gear is fixedly connected to an output shaft for rotation therewith. The worm gear mechanism can be configured with a secon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/08H02K7/116
CPCH02K7/081H02K7/116F16H57/039F16H57/12F16H2057/02034F16H2057/0213F16H2057/0221F16H2057/127H02K7/1166F16H1/16F16H1/203
Inventor J·保尔J·特普夫尔
Owner DR ING H C F PORSCHE AG