Triggered speed-control switch

Abstract

The invention discloses a triggered speed-control switch which comprises a case and a triggered push handle mechanism mounted on the case. The triggered push handle mechanism comprises a press-button and a push handle, wherein, one end of the push handle is a press-button mounting section, the other end of the push handle is a main spring mounting section, the press-button mounting section and the main spring mounting section are located on two parallel planes and are connected through a corner connecting section, the press-button is mounted on the press-button mounting section, a main spring is arranged between the main spring mounting section and the case, a slide base is mounted at the lower end of the push handle, a contact chip which is matched with a speed-control circuit board is arranged on the slide base, a reinforcing piece is arranged inside the corner connecting section of the push handle, and two ends of the reinforcing piece extend to the press-button mounting section and the main spring mounting section respectively. According to the triggered speed-control switch, the reinforcing piece is embedded in a weak bearing part of the push handle, the mechanical strength of the push handle is enhanced greatly, the service life of the push handle is prolonged, and the practical application bottleneck of a press-button biased switch is solved.

Description

technical field [0001] The invention relates to a trigger speed regulation switch, which is suitable for motor on-off and speed regulation control of electric tools. Background technique [0002] The current trigger speed control switch includes a housing and a trigger push handle mechanism installed on the housing. The trigger push handle mechanism includes a button and a push handle. One end of the push handle is a button installation section, and the other end is a main spring installation section. , the button installation section and the main spring installation section are on two parallel planes, the button installation section and the main spring installation section are connected by a corner connection section, the button is installed on the button installation section, the main spring installation section and the housing The main spring is installed between them, and a sliding base is installed at the lower end of the push handle, and a contact piece that cooperates...

AI Technical Summary

Problems solved by technology

However, this kind of switch has some shortcomings: 1. The push handle is made of simple plastic injection molding, but due to the uneven force on the corner of the handle during the button pressing process, the force-bearing position is prone to deformation or even breakage, which seriously affects the life of the switch; 2. Most of the wiring holes at the bottom of the switch do not have an effective dust-proof design, so that in a dusty outdoor working environment, dust can easily enter the inside of the switch through the gap between the wiring hole and the wire, shortening the life of the internal parts and components of the switch, thus lead to shortened switch life

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