Manual and electric integrated screwdriver

Abstract

The invention provides a manual and electric integrated screwdriver. The manual and electric integrated screwdriver comprises a screwdriver portion, a gripper mechanism, a pretightening force applyingmechanism, a state switching mechanism and an electric drive mechanism. The electric drive mechanism is mounted in the gripper mechanism, the electric drive mechanism is connected with the pretightening force applying mechanism, and the screwdriver portion is mounted in the pretightening force applying mechanism. The state switching mechanism is slidingly mounted on the outer side of the screwdriver portion. A push ring is controlled by manually controlling a push button, then outer clamping blocks and inner clamping blocks are controlled to be clamped with the screwdriver portion and the pretightening force applying mechanism correspondingly, and therefore manual operation and electric operation are switched. The outer clamping blocks and the inner clamping blocks of the state switchingmechanism are clamped with clamping grooves of the pretightening force applying mechanism and clamping grooves in a contact manner or are not in contact with the clamping grooves of the pretighteningforce applying mechanism and the clamping grooves correspondingly, the screwdriver is switched between the three states of electric work, manual work and manual work under pretightening force, and therefore the screwdriver can meet different requirements.

Description

technical field [0001] The invention relates to the technical field of screwdrivers, in particular to a manual electric integrated screwdriver. Background technique [0002] A screwdriver is a tool commonly used in households and the electrical industry. Because the manual screwdriver is laborious to screw, people with small hands cannot unscrew it. Therefore, an electric screwdriver was invented on the basis of the screwdriver. However, due to the large size of the electric screwdriver, it is inconvenient to carry. , and it cannot work without electricity; [0003] For example, the Chinese invention patent of Patent No. 2014106958796 discloses a screwdriver, which assists in tightening and loosening screws by setting a torsion spring in the middle of the handle and replacing torsion springs in different directions. It saves effort, but because the torsion spring needs to be replaced for tightening and unscrewing, the operation is complicated. The Chinese invention patent o...

AI Technical Summary

Problems solved by technology

[0002] A screwdriver is a tool commonly used in households and the electrical industry. Because the manual screwdriver is laborious to screw, people with small hands cannot unscrew it. Therefore, an electric screwdriver was invented on the basis of the screwdriver. However, due to the large size of the electric screwdriver, it is inconvenient to carry. , and it cannot work without electricity;

[0003] For example, the Chinese invention patent of Patent No. 2014106958796 discloses a screwdriver, which assists in tightening and loosening screws by setting a torsion spring in the middle of the handle and replacing torsion springs in different directions. It saves effort, but because the torsion spring needs to be replaced for tightening and unscrewing, the operation is complicated. The Chinese invention patent of Patent No.: 2018113532692 discloses an electric screwdriver, including a housing; the driving part provides working power for the electric screwdriver; The transmission part, the force input end of the transmission part is coaxially connected with the driving end of the driving part; the torque adjustment part is used to adjust the output torque of the electric screwdriver, the torque input end of the torque adjustment part and the The force output end of the transmission part is connected coaxially; and the execution part is installed on the front end of the housing. Because it uses electric drive, when the battery is out of power, the screwdriver cannot work. The size of the force to determine whether the screw is tightened, but the electric screwdriver can not achieve

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