Stopper of wheel guard in grinder

Abstract

Since conventionally there is no special regulation on a hand-held grinder when the position of a wheel guard covering the side of a whetstone to prevent particulates from scattering is adjusted, the particulate scattering prevention function may be impaired due to excessive rotation about the spindle axis. The particulate scattering prevention function is exhibited surely in this invention by preventing excessive rotation when the position of a wheel guard is adjusted. The wheel guard (20) is provided with a stopper protrusion (27) and a stopper abutting portion (8e) is provided on the gear housing side (8). The position adjustment range is regulated by making the stopper protrusion (27) abut against the stopper abutting portion (8e) at a position where the wheel guard (20) is rotated about 60 degree in the rotational direction of the whetstone.

Description

technical field [0001] The invention relates to a stopper device for a grinding wheel cover on a hand-held grinding machine, which is used for grinding operations such as stones and the like. Background technique [0002] The hand-held grinder has a roughly cylindrical body, and an electric motor is built inside the body, and the user uses the body as a handle to grasp for grinding and other operations. A deceleration unit is provided at the front of the fuselage, and the deceleration unit decelerates the rotation output of the electric motor through a bevel gear set and then outputs it in a direction perpendicular to the motor shaft. Therefore, the main shafts on the output side of the speed reduction unit are perpendicular to the motor shaft. A circular grinding wheel is mounted on the spindle. Usually, the rear side (user's side) of the grinding wheel is covered with a grinding wheel cover to prevent dust and the like (hereinafter, simply referred to as dust) generated ...

AI Technical Summary

Problems solved by technology

Therefore, if the grinding wheel cover is adjusted to a position where the grinding wheel cover is opened at a large angle toward the user's side, there will be a problem of the cutting dust flying toward the user's side. Therefore, although the grinding wheel cover can be adjusted to any position that can be adjusted structure (position adjustment function), but from the point of view of preventing dust from flying, this will impair the operability of the grinder

[0006] In addition, if the fixing bolts are not tightened after position adjustment, the position of the wheel cover may move in the opening direction due to contact with other parts, so that the wheel cover cannot play the function of preventing dust from flying

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