Electric motor for a small-scale electrical appliance

A technology of electric motors and electrical appliances, which is applied in the field of electric motors, can solve the problems of limited changes, and achieve the effects of small shell swing, high vibration frequency, and simple structure

Active Publication Date: 2006-12-27
BRAUN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also the rotation of the vibration always has the same frequency as

Method used

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  • Electric motor for a small-scale electrical appliance
  • Electric motor for a small-scale electrical appliance
  • Electric motor for a small-scale electrical appliance

Examples

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Example Embodiment

[0030] FIG. 1 is a schematic diagram of an embodiment of an electric motor according to the present invention. The electric motor has a stator 1 and a rotor 2 rotatable relative to the stator 1 and movable parallel to the axis of rotation. The stator 1 consists of a stack of soft iron sheets 3 , by which four sections 4 arranged in parallel in the axial direction are formed. Each segment 4 has a set of permanent magnets 5 distributed around the circumference of the stator 1 , which together constitute the magnetic means 6 of the stator 1 . The rotor 2 has an iron core 8 with coils 9 arranged on the shaft 7 and is capable of not only linear vibrational movement but also rotational vibrational movement relative to the stator 1 . To excite this vibratory movement, the coil 9 is supplied with a current signal. The current through the coil 9 forms a magnetic field in particular in the region of the iron core 8 and thus the iron core 8 is temporarily magnetized. Due to the magnet...

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PUM

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Abstract

The invention relates to an electric motor for an electrical small-scale unit. Said electric motor comprises at least one oscillatory motor component (1, 2), a magnet arrangement (6) comprising at least one permanent magnet (5), and a coil (9) for producing a magnetic field that generates a force for stimulating a linear oscillatory movement during interaction with the magnetic arrangement (6). The inventive electric motor is characterised in that a torque for stimulating a rotary oscillatory movement is also generated during the interaction of the magnetic field produced by the coil (9) and the magnet arrangement (6).

Description

technical field [0001] The invention relates to a motor for small electric appliances. Furthermore, the invention relates to a small electrical appliance having such an electric motor and to a method for operating the electric motor. Background technique [0002] Motors for small electric appliances are known in various configurations. For example DE 1 151 307 A discloses a vibrating armature drive mechanism for a dry shaver with a shaving cutter capable of reciprocating working movement, which mechanism has a U-shaped electromagnet fixedly connected to the housing of the shaver . A working armature is arranged near the magnetic poles of the electromagnet, and a compensation armature is respectively arranged on both sides of the working armature. In the operating state, the working armature, which drives the shaving cutter, oscillates parallel to the magnetic surface of the electromagnet, wherein the compensation armature vibrates in antiphase to this, in order to prevent...

Claims

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Application Information

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IPC IPC(8): H02K33/16H02K33/18
CPCH02K33/18H02K2201/18
Inventor 贝恩哈德·克劳斯汉斯约尔格·赖克乌韦·舍贝尔亚历山大·施勒特尔
Owner BRAUN AG
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