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Magnetic detector magnetic wheels for electric motors

A technology of electric motors and detectors, applied in the field of electric motors

Active Publication Date: 2020-09-04
BUHLER MOTOR GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This arrangement also requires an additional splicing process for mounting the reinforcing elements

Method used

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  • Magnetic detector magnetic wheels for electric motors
  • Magnetic detector magnetic wheels for electric motors
  • Magnetic detector magnetic wheels for electric motors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Figures 1 to 6 A first embodiment of the detector magnet wheel 2 is shown from a different perspective, which is formed from a carrier 3 and a magnet ring 7 . The carrier 3 consists of an annular disc-shaped hub 30 to which the six fastening means 4 , the central sleeve 29 and the magnet-receiving ring 9 are coupled. Magnet holding ring 9 (see figure 2 ) is continued radially by two annular walls 37 spaced apart from each other. The magnet containing ring 9 and the annular wall 37 jointly form a radially outwardly open groove 33 (see figure 2 ). The slot 33 is filled by the magnet ring 7 . The magnet ring 7 continues radially beyond the annular wall 37 and forms a cylindrical outer contour. The axial delimitation of the magnet ring 7 and the axial delimitation of the annular wall 37 lie in one plane. The sleeve 29 protrudes axially relative to the magnet ring 7 and the annular wall 37 . Three abutments 6 arranged at a distance of 120° from one another are coup...

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Abstract

The invention relates to an electric motor (1) with a stator (19), a rotor (18) rotatably mounted in a housing, a detector magnet wheel (2) mounted on the rotor (18) in a rotationally fixed manner ). The object of the present invention is to enable simple manufacture and installation of an electric motor (1) with a detector magnetic wheel (2), where a small axial construction length is required and a sensor fixed relative to the stator is possible Accurate axial attachment and position adjustment. This object is achieved according to the invention by the features of device claim 1 and the features of method claim 22 .

Description

technical field [0001] The invention relates to an electric motor (1) with a stator (19), a rotor (18) rotatably mounted in a housing, a detector magnetic wheel (2). Background technique [0002] A shaft-mounted detector magnet wheel is described in DE 198 23 640, in which despite the different coefficients of thermal expansion of the metal shaft and the plastic-bonded permanent magnet, an extrusion connection is to be produced. This problem is solved in that the detector magnet wheel is formed from two axial sections, wherein the first section is open towards the shaft and the second section is compressed by means of an annular auxiliary body as reinforcing element. Due to the two axial sections, an increased axial installation space is required. Furthermore, despite the large overall length, the detector magnet wheel is only fastened on one side over a short section. This arrangement also requires an additional splicing process for mounting the reinforcement means. Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K11/215G01P3/487
CPCG01P3/487H02K11/215H02K29/08G01D5/145
Inventor 路德维希·哈格尔
Owner BUHLER MOTOR GMBH