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Electric tool

A technology of electric tools and electric motors, which is applied in the direction of manufacturing tools, portable mobile devices, metal processing equipment, etc., can solve the problems of hindering the improvement of productivity, time-consuming and laborious assembly operations, and rising costs, so as to reduce manufacturing costs, simplify operations, The effect of improving productivity

Inactive Publication Date: 2007-06-06
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] By adopting press-fit jigs in this way, the assembly work of the product is time-consuming and laborious, which hinders the improvement of productivity and leads to an increase in cost.

Method used

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  • Electric tool
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Examples

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Embodiment Construction

[0016] Embodiments of the present invention will be described below based on the drawings.

[0017] Fig. 1 is a longitudinal sectional view of an example of an electric tool, that is, a grinder, and Fig. 2 is a plan view, and the grinder 1 is configured as follows: in front of the motor housing 2 (left side of Fig. A gear case 7 is assembled to a bearing plate 6 that pivotally supports the rotor 4 of the gear motor 3, and a rear cover 8 is assembled behind it. Here, the motor casing 2 and the rear cover 8 are made of synthetic resin, and the gear case 7 is made of metal.

[0018] In the gear box 7, the output shaft 9 of the rotor 4 protruding into the gear box 7 is perpendicularly supported to the main shaft 10, and the first bevel gear 11 fixed to the front end of the output shaft 9 is integrally fixed to the main shaft 10 through the first bevel gear 11. The meshing of the second bevel gear 12 can transmit the rotation of the output shaft 9 to the main shaft 10 . A disc-sh...

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Abstract

The object of the present invention is to simplify the process of installing a motor upon a shell and improve the productivity and save the cost. In the miller 1, the motor shell 2 accommodating the commutator machine 3 is axially separated into a front and a back part at the outside of the stator 5, i.e. the front shell 14 and the back shell 15, and the stator 5 can be installed on the motor shell 2 by pressing the stator 5 into the back shell 15 and fixing the front shell 14 to the back shell 15 employing the screw with the stator 5 between them.

Description

technical field [0001] The present invention relates to an electric power tool such as a grinder in which a motor serving as a drive source is accommodated in a cylindrical case. Background technique [0002] In an electric power tool such as a grinder, a motor is accommodated in a cylindrical motor case (for example, refer to Patent Document 1). The specific steps of assembling the motor into the motor housing are as follows: first, press the stator (magnetic field) of the motor into the motor housing with a press-in jig (press), then fix the stator screws to the motor housing, and finally assemble the rotor . [0003] [Patent Document 1] JP Unexamined Publication No. 2001-9757 [0004] By using the press-fit jig in this way, it takes time and effort to assemble the product, hinders the improvement of productivity, and leads to an increase in cost. Contents of the invention [0005] Therefore, an object of the present invention is to provide an electric power tool that...

Claims

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Application Information

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IPC IPC(8): B25F5/02B25F5/00B24B23/00
Inventor 田村诚稻吉广共
Owner MAKITA CORP
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