BACKGROUND OF INVENTION

1. Field of the Invention

The present invention relates generally to an improved switch structure of the electric screwdriver, and more particularly to a design as a whole of the improved switch structure base, which can accurately reflect the micro touch switch and enhance the efficiency of screw lock operation.

2. Description of Related Art

The online operation of the push-down type electric screwdriver is used repeatedly and continuously. In the components, it is installed in the push-down type electric screwdriver switch, which controls the operation of the electric screwdriver head; after the push-down type electric screwdriver head is pressed down, it is upwardly touched by the internal thimble, so that the thimble triggers the switch to start, and a series of gear sets is linked through the motor of the electric screwdriver, and the clutch set will drive the screwdriver head to obtain the preset torque output; However, with the requirements of industrial upgrading and precision screw lock operation, the switch parts assembled on the market are generally repeated in the operation of the screw lock, which is easy to loose and has a short life and is not accurate, therefore, the switch combined with the push-down type electric screwdriver should be specially designed to accurately reflect the pressing/releasing state of the screwdriver head, so that it can improve the efficiency of the screw lock operation and prolong the service life of the switch.

Therefore, the inventor of this invention considers that in addition to being able to continuously exist in the market, the more excellent tool product should be continuously developed, especially for the precision of the screw lock, the more attention should be paid, so this invention is designed to be more practical.

SUMMARY OF THE INVENTION

This invention mainly aims to provide an improved structure of the electric screwdriver switch. The main improved structure base is designed as a whole. Compared with the general switch combination, it features the strong structure and high precision, and it is not easy to loose after installation. It can accurately reflect the micro touch switch, improve the efficiency of the screw lock operation, and further prolong the service life of the switch.

In order to achieve the above object, the technical means adopted in this invention is to design an improved electric screwdriver switch structure, the switch is installed in a push-down type electric screwdriver, the lower end of the electric screwdriver is equipped with a screwdriver head, and its inside is equipped with a thimble; the switch includes a structure base with an inner slot and a micro-switch with a touch rod, wherein the inner groove is provided with a spring, an L-rod and an inserted plug pin, and the micro-switch is electrically connected to the motor of the electric screwdriver, the L-rod and the spring are snapped into the inner slot, the spring is snapped into the upper end of the L-rod, and the plug pin is pressed against the inner corner of the upper end of the L-rod, the position of which makes the spring have pre-stressing, and limit the movement range of the L-rod; when the electric screwdriver presses down the screwdriver head, the inner thimble is linked, and the upper end of the thimble touches the lower end of the L-rod and push it into the inner slot, and the upper end part of the L-rod protruding outside the inner slot is linked, so as to touch or not touch the touch rod on the micro-switch, corresponding to the motor to be energized/not energized, the screwdriver head is driven for the screw lock operation.

The structure base is a rectangular type, and two fixing lugs are extended at both sides of the structure base, and the lock is attached to the electric screwdriver.

The structure base is provided with a lock hole, and the micro-switch is locked in the lock hole.

The micro-switch is provided with positive electricity, negative electricity and grounding terminal electrically connected to the motor of the electric screwdriver.

The lower end of the L-rod is provided with an apical plate for touching the upper end of the thimble.

