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Electric machine tool

A technology of electric tools and motors, which is applied in the field of receiving bridges, and can solve the problems of increased load at the supporting position

Active Publication Date: 2010-06-16
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If an oscillating or vibrating mechanism such as an impact mechanism is driven again, the load at the bearing position will further increase

Method used

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  • Electric machine tool
  • Electric machine tool
  • Electric machine tool

Examples

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Embodiment Construction

[0018] Figures 1 to 3 shows a preferred electric machine tool 10, which has an electric motor (not shown) arranged in a motor housing 11, at its end on the commutator side, a receiving bridge 15 is provided, one for example overlapping with the electric motor The housing cover 12 which is separated from the motor housing 11 in the various views. The receiving bridge 15 protrudes with its free end from the motor housing 11 into the housing cover 12 . In the region of the free end a rotatable brush plate 16 and a ventilation grid 18 ( figure 1 ).

[0019] For the support of the motor and the receiving bridge 15, support connections 20, 21 are formed between the motor housing 11 and a housing cover 12 which at least partially covers the motor, wherein the housing cover 12 is drawn from the motor housing in the drawing. Body 11 is lifted. The motor housing 11 and the housing cover 12 together form a rear housing part of the electric power tool 10 .

[0020] The housing cover...

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Abstract

The invention relates to an electric tool machine, in particular to a motor arranged in a motor casing (11), which is provided with a reception bridge (15) for supporting the motor. The invention proposes that: for the supporting of the reception bridge (15), supporting connecting parts (20, 21) are arranged between the motor casing (11) and a casing cover (12) which at least partly covers the motor casing.

Description

technical field [0001] The invention relates to an electric power tool, in particular having an electric motor arranged in a motor housing and a receiving bridge for supporting the electric motor. Background technique [0002] Hand-operated electric power tools with an electric motor in the construction of a tank shell or lid are known. The armature is supported by at least two bearing points, namely a transmission-side and a commutator-side bearing point. The gear-side bearing point is usually formed by an intermediate flange or a gear flange and is preferably designed as a fixed bearing. The commutator-side mounting takes place in the motor housing via a receiving bridge, which is connected to the housing bottom with ribs and webs. This is necessary for reasons of stability, since the electrically insulating motor housing is usually made of plastic. At the same time, the bottom of the housing serves to support or receive the commutation unit of the electric motor and po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F5/02
CPCB25F5/02
Inventor 奥托·鲍曼奥特马尔·绍尔赫尔穆特·海因策尔曼哈迪·施密德
Owner ROBERT BOSCH GMBH
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