Handle waterproof structure of electric tool

Abstract

The invention relates to a handle waterproof structure of an electirc tool, which improves the waterproof perfermance of the handle and solves the problem that the waterproof structure of a rotation supporting section of a normal / reverse switching handle of the electric screwdriver is not fully considered. A gasket (16) is installed on a rotation supporting section (15c) of the normal / reverse switching handle (15) to make it slidably contact with the inner surface of a supporting recess (13a), thus realizing water resistance; a groove section (20) is arranged on the rotation supporting section (15c); and the gasket (16) is embedded into the groove section (20) so as to form a labyrinth having a foreign body invasion path between the gasket (16) and the rotation supporting section (15c).

Description

technical field [0001] The present invention relates to, for example, a waterproof structure of a rotation support portion of a forward and reverse switching handle of a hand-held electric screwdriver. Background technique [0002] An electric screwdriver (electric screwdriver) includes: a tool body part in which a motor is incorporated; and a handle part protruding laterally from a side part of the tool body part. When the trigger-type switch handle at the bottom of the handle is pulled with fingertips, the closing button of the switch body assembled in the handle is pressed, so that the motor is started, and the front end of the tool body is installed on the The screwdriver bit on the spindle rotates in the screw tightening direction. In such a screw tightening machine, since the screw loosening operation is also performed, the main shaft can be rotated in the screw loosening direction by reversing the motor. [0003] Its structure is set as follows: On the switch body a...

AI Technical Summary

Problems solved by technology

[0009] However, the prior art disclosed in these patent documents is carried out for the switch body, so the waterproof structure of the forward and reverse switching handle has not been fully considered.

The switch body is sealed by welding or bonding the switch boxes of the split structure with the on-off circuit inside, thus achieving a reliable waterproof and dustproof effect, but the forward and reverse switch operated by the switch handle The contact part of the circuit is exposed on the upper part of the switch body, so it needs to be reliably waterproofed

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