Torque-adjustable electric screw driver based on planetary gear transmission principle

Abstract

The invention relates to the technical field of articles of daily use, and discloses a torque-adjustable electric screw driver based on a planetary gear transmission principle. The torque-adjustable electric screw driver comprises a shell body, wherein a sun gear is movably connected to the interior of the shell body, a planetary gear is connected to the exterior of the sun gear in a meshing mode,a gear ring is connected to the exterior of the planetary gear in a meshing mode, a brake pad is fixedly connected to the outer portion of the gear ring, a brake clamp is movably connected to the outer portion of the brake pad, and a lead screw is in threaded connected to the outer portion of the brake clamp. Through cooperative use of the sun gear, the planetary gear, the gear ring, the brake pad, the brake clamp, the lead screw, a bevel gear and an adjusting button, the rotating speed of a main gear is reduced, and the torque effect of the main gear is improved, so that the using effect ofthe device is effectively improved; and the rotating torque of a rotating head is conveniently adjusted through the adjusting knob, so that the requirements of different torque forces are met, the using range of the device is effectively enlarged, the punching phenomenon is prevented, and economic losses are reduced.

Description

technical field [0001] The invention relates to the technical field of daily necessities, in particular to an electric screwdriver with adjustable torque based on the principle of planetary gear transmission. Background technique [0002] Daily necessities are commodities that customers are accustomed to use and buy, and the value is generally above the middle. With the advancement of technology, more and more automation and semi-automation of machining are pursued, and traditional manual screwdrivers are gradually replaced by electric screwdrivers. Screwdriver, also known as electric batch, electric screwdriver, is an electric tool used for tightening and loosening screws. This electric tool is mainly used in assembly lines. It is one of the necessary tools for most manufacturers and one of the important tools for household repairs. . [0003] However, the existing electric screwdrivers have complex structures and many internal electronic structures, which are extremely pr...

AI Technical Summary

Problems solved by technology

[0003] However, the existing electric screwdrivers have complex structures and many internal electronic structures, which are extremely prone to failure or damage, affecting normal use, and in the process of home maintenance and use, different torques are often required according to different furniture and appliances. However, the existing Screws are often fixed in torque and can only be used for tightening with a single torque, which leads to a limited range of use of existing screwdrivers, and usually requires different types of screwdrivers for different torques, which increases equipment costs and is not suitable for home use. Moreover, when the steering of the existing screwdrivers is changed, the steering of the motor is usually adjusted by electronic equipment to achieve the adjustment of the rotation direction. However, this method will cause great damage to the motor, resulting in a decrease in service life.

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