Electric tool switch
A technology of electric tools and switches, which is applied in the field of switches, can solve the problems of many assembly processes, unstable work, and insensitive movements of electric tool switches, and achieve the effects of compact structure, long service life, and improved reliability
Inactive Publication Date: 2014-09-24
乐清市杰拉华电器有限公司
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to solve the problem that the electric tool switch has many and complicated assembly procedures, and the work is unstable and the action is not sensitive.
Method used
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Embodiment Construction
[0028] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0029] The invention provides an electric tool switch, such as figure 1 , figure 2 and image 3 As shown, the electric tool switch has a shell sealed by an insulating base 1 and an insulating cover 15 , and a contact breaking mechanism, a positive and negative switching mechanism, a brake protection mechanism and a speed control circuit board 16 are arranged in the shell.
[0030] The insulating base 1 is provided with power supply positive and negative input terminals B+, B- (B+ is the positive terminal 2, B- is the negative terminal 3) and first and second output terminals M1, M2 (M1 is the first output terminal 26, M2 is the second output terminal 25), the positive and negative input terminals B+ and B- of the power supply are welding terminals for connecting the input power supply, and the first and second output terminals M1 and M2 are used for connecting the...
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The invention discloses an electric tool switch, which comprises a shell. A contactor breaking mechanism and a speed regulating control circuit board are disposed in the shell, the contactor breaking mechanism consists of a manual control lever, a speed regulating movable contactor and a shoot-through movable contactor, a first wedge-shaped boss and a second wedge-shaped boss which are oblique downwards are disposed on a rear side surface of the manual control lever, the two movable contactors are respectively arranged on a negative power input terminal, lower ends of the two movable contactors are respectively opposite to a speed regulating fixed contactor and a shoot-through fixed contactor, upper ends of the two movable contactors are respectively opposite to the first wedge-shaped boss and the second wedge-shaped boss, a speed regulating chip is arranged on the speed regulating control circuit board, the negative power input terminal is communicated with a second output end by the speed regulating movable contactor, the speed regulating fixed contactor and a power tube, and is also communicated with the second output end by the shoot-through movable contactor and the shoot-through fixed contactor, and a positive power input terminal is communicated with a first output terminal. The electric tool switch is compact in structure, small in volume, low in cost, simple and convenient in assembly and easy to be used with various electric tools, and has the advantages of high power, reliability in action and long service life.
Description
technical field [0001] The invention relates to a switch, in particular to an electric tool switch. Background technique [0002] A mechanized tool that is powered by a motor or an electromagnet and drives the working head through a transmission mechanism is called an electric tool. Because electric tools have the advantages of lightweight design, strong power, and convenient use, they have been widely used in various occasions. Common electric tools include electric drills, electric grinders, electric wrenches and electric screwdrivers, electric hammers and impact drills, Concrete vibrator, electric planer, etc. [0003] Electric tools are generally operated by hand, and their start, stop and speed adjustment are realized through switches. Specifically, the main function of the electric tool switch is to first turn on the motor of the electric tool at a low speed, then increase the speed through the speed regulating circuit, and finally make the motor rotate at full speed...
Claims
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IPC IPC(8): H01H23/30
Inventor 王和远罗勇
Owner 乐清市杰拉华电器有限公司