A brake structure applied to electric tool switch

Abstract

The invention discloses a brake structure applied to an electric tool switch. The brake structure comprises a shell, wherein a push rod is arranged on the shell, a push rod inner end is arranged at one end of the push rod, a push rod outer end is arranged at the other end, a main spring is arranged between the push rod inner end and an inner wall of a rear side, a connection convex block is arranged on an outer side wall of one end, arranged in the shell, of the push rod, one end of the connection convex block is fixedly connected with an auxiliary rod, the periphery of the auxiliary rod is encircled by an annular body, a press spring sleeves the auxiliary rod and props against an inner wall of the annular body, a B+ terminal and a D terminal are arranged between the annular body and a front side plate, a conductive connection body is arranged at one end, facing the front side plate, of the annular body, the conductive connection body props against the B+ terminal and the D terminal under driving of the press spring when no external force is applied to the push rod, so that the B+ terminal and the D terminal are connected, the B+ terminal is electrically connected with a positive wiring terminal of a motor, and the D terminal is electrically connected with a negative wiring terminal of the motor. By the brake structure, inertia enable energy of the motor is rapidly released bya discharging mode, so that the motor is rapidly stopped rotating.

Description

technical field [0001] The invention relates to an electric switch, in particular to a braking structure applied to an electric tool switch. Background technique [0002] Electric tools, especially electric tools driven by motors, are usually controlled by push-type switches during operation. Usually, the switch is pressed to start the motor, and the switch is released to turn off the motor. Since the motor rotation has inertia, when the operator releases the After the switch is switched on, the motor will continue to run for a certain period of time. During this period, the electric tool is still in the process of operation, so there is a risk of safety accidents and may cause damage to the processed product. Taking the electric hammer as an example, when the operator releases the switch Finally, the motor continues to run for a period of time. During this period of time, the electric hammer still has a large vibration, and the hammer head at the front end still has a large...

AI Technical Summary

Problems solved by technology

[0002] Electric tools, especially electric tools driven by motors, are usually controlled by push-type switches during operation. Usually, the switch is pressed to start the motor, and the switch is released to turn off the motor. Since the motor rotation has inertia, when the operator releases the After the switch is switched on, the motor will continue to run for a certain period of time. During this period, the electric tool is still in the process of operation, so there is a risk of safety accidents and may cause damage to the processed product. Taking the electric hammer as an example, when the operator releases the switch Finally, the motor continues to run for a period of time. During this period of time, the electric hammer still has a large vibration, and the hammer head at the front end still has a large momentum. At this time, if the operator touches the electric hammer to other objects, then Other items may be damaged due to the impact of the hammer head, and if it touches people, it may hurt the human body. Therefore, it is necessary to provide a brake structure that can stop the motor of the electric tool quickly

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