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Hand tool device has multipart housing

A hand-held machine tool, multi-piece technology, applied in the direction of manufacturing tools, electrical components, electromechanical devices, etc., can solve the problem of insufficient elasticity of the fixing mechanism, and achieve the effect of avoiding deformation

Inactive Publication Date: 2008-06-25
HILTI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When manufacturing a range of hand-held power tools comprising different models with different motors, but in order to be able to fix the different lengths of the various motors in the same motor housing, in many cases fixing Institutional resilience is not enough

Method used

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  • Hand tool device has multipart housing
  • Hand tool device has multipart housing
  • Hand tool device has multipart housing

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0022] FIG. 1 shows the rear of a hand-held power tool 2, for example in the form of a threader, drill, percussion drill or rock drill, which has a multiple piece housing. In this case, the housing 4 has a main part 6 which forms a pistol-like handle 8 and partially functions as a motor housing 10 . The housing 4 also includes an annular ventilation element 12 with four screw holes 14, via which it can be mounted between a projection 16 and the motor housing 10 by means of fastening elements not shown in greater detail. .

[0023] The motor housing 10 has a mounting opening 18 via which the stator 20 of an electric motor 22 can be inserted in the motor housing 10 in a mounting direction M. The mounting direction M is here substantially parallel to an axis A defined by the motor 22 .

[0024] Furthermore, two clamping elements 24 are provided for fastening the stator 20 in the motor housing 10 , for example in the form of screws. They each have a nail head 26 and a rod 28 ,...

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Abstract

The invention relates to a handheld machine tool (2) which is provided with a multi shell (4), comprising an electric motor shell (10). The electric motor shell forms an installation opening (18). An electric motor (22) stator (20) to determine an axle (A) can be embedded into the electric motor shell (10) via the opening, wherein, the stator (20) for forming an axial arresting device can be fixed on embedded position. The axial arresting device can cling to the stator (20) on the opening side and can be axial fixed via two clamping and connecting devices (38). The clamping and connecting device is provided with at least two clamping elements (24). The clamping elements are kept on two first clamping grooves (32a) which are arranged on the electric motor shell (10). For this provision, at least two second-clamping grooves (32b) are additionally arranged on the electric motor shell (10). Relative to the first clamping grooves (32a), the second clamping grooves have an axial offset (v).

Description

technical field [0001] The invention relates to a hand-held power tool with the features according to the preamble of claim 1 . The hand-held power tool has a multi-part housing comprising a motor housing which forms a mounting opening through which a stator of a motor defining an axis can be inserted into the motor housing . The stator can be fixed in the inserted position by means of an axial stop, which can bear against the stator on the open side and can be axially fixed by at least two clamping connections. For this purpose, the clamping connection has two clamping elements which interact with two first clamping recesses arranged on the motor housing. Background technique [0002] Hand-held power tools of this type allow easy mounting of the electric motor, while the stator is stably fastened to the motor housing by means of a clamp connection. [0003] From EP 1 526 629 A1 a housing of a hand-held power tool is known, in which an air guiding device is used for axial...

Claims

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Application Information

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IPC IPC(8): H02K7/14B25F5/00
CPCH02K7/145H02K5/15B25F5/02
Inventor V・凯勒R・诺伊豪瑟尔H・布格尔
Owner HILTI AG
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