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Spindle motor

A technology of lead screw motor and screw lead screw, which is applied in the direction of electrical components, electromechanical devices, mechanical equipment, etc., can solve the problems of short service life and achieve the effect of reliable maintenance

Active Publication Date: 2012-01-04
SEW-EURODRIVE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] From DE 102 35 078 A1 a screw motor is known which has only a limited (lubricating) grease volume and thus a short service life

Method used

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Examples

Experimental program
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Embodiment Construction

[0077] Now describe the present invention in detail by means of the accompanying drawings:

[0078] The motor housing 1 of the motor, including the rotor shaft 2 and the stator, is tightly connected to the housing parts 4 , 7 , 15 of the spindle motor. Preferably, an O-ring is fitted at each connection interface point of the housing parts, so that tightness is guaranteed even at overpressures above, for example, 2 bar.

[0079] A housing part 4 receives a bearing 18 supporting the threaded screw 5 . The threaded screw is connected to the rotor shaft 2 through a coupling device that can be inserted in the axial direction. The coupling device has claws, between which a plastic material can be arranged. Preferably, this coupling is play-free.

[0080] A seal arranged in the housing part 4 seals the interior of the spindle from the electric motor. In particular, the sealing device 52 is designed as an O-ring.

[0081] The inner space can thus be filled with oil. On the outpu...

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PUM

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Abstract

The invention relates to a spindle motor, comprising an electric motor (1) having a rotor (2) connected to a threaded spindle (5), the thread thereof engaging with a thread of a spindle nut (6) connected to a piston rod (14), wherein the spindle nut (6) having the piston rod (14) is axially guided in a housing part (15) of the spindle motor (1), wherein a guide part (9) is connected to the spindle nut (6) and the piston rod (14) for axially guiding the same, wherein the threaded spindle (5) is supported by means of bearings at the axial end area thereof facing the electric motor (1) or in a second housing part connected to the first housing part, wherein the threaded spindle (5) is supported on the piston rod (14) by means of a bearing (18) disposed on the threaded spindle (5) at the axial end area thereof facing away from the electric motor (1).

Description

technical field [0001] The invention relates to a screw motor. Background technique [0002] A screw motor is known from DE 102 35 078 A1, which has only a limited (lubricating) grease volume and therefore also a short service life. [0003] A screw motor is known from DE 10 2007 014 714, which has the figure 2 Lubricant channel 21 shown in . It must be lubricated from time to time. [0004] Various high-pressure seals from the hydraulics sector are known from the product catalog of the company Dichtomatik, for example a PTFE nut seal with V-shaped steel spring known as MA47. Furthermore, a high-pressure seal is known, such as the product WCP21, which has a radial shaft seal with a PTFE sealing lip and an elastomeric pre-tensioning disc clamped between two between metal cages. [0005] A lead screw motor is known from DE 10 2008 025 072 A1, in which the threaded lead screw 5 is supported on its axial end region in a support indicated by the reference numeral 8 and is pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/06
CPCH02K7/06F16H25/20F16H57/027F16H2025/2075
Inventor M·加布里尔G·迪特斯
Owner SEW-EURODRIVE GMBH & CO KG
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