Multi-purpose post

Abstract

The invention discloses a multi-functional extension rod. There are mounting holes and tail rods at both ends of the inner sleeve respectively. A first elastic member capable of extending and contracting in the axial direction is arranged in the mounting hole. At least three Radial perforation, the ball can slide axially along the radial perforation, there is a stop device in the radial perforation to prevent the ball from falling into the installation hole, a stop ring with a bell mouth at one end and a second elastic member sleeved at one end of the inner sleeve The inner wall of the bell mouth of the retaining ring is tightly against the ball, the other end of the retaining ring is tightly against one end of the second elastic member, the other end of the second elastic member is fixed to the inner sleeve, and the sliding sleeve is fixed on the inner wall of the middle sleeve end on the outer side of the inner sleeve. There is a magnetic induction device, and the other end of the magnetic induction device can push the retaining ring to move towards the tail rod. The sleeve is slidingly sleeved on the outside of the middle sleeve, and the two ends of the middle sleeve respectively form front and rear stoppers that limit the sliding distance of the sleeve. Features of screw, safe operation, visible depth and adjustable depth.

Description

technical field [0001] The invention relates to a screwdriver head clamping device, in particular to a multifunctional post. Background technique [0002] Ordinary screwdriver bit clamping device has complex structure and single function, generally only has the functions of screwdriver bit clamping and replacement, which is very inconvenient to use. When operating, one hand needs to hold the screwdriver head holding device, and the other hand holds the screw, or screw the screw into a certain distance and then use the screwdriver head on the screwdriver head holding device to operate the screw, which is very inconvenient to operate. It is also easy to install the screw in the wrong direction. When the screw is screwed in, due to the high-speed rotation of the screw, it is easy to throw out the powder in the object and even cause the screw to be thrown out, causing personal injury. When the screw is locked, it is difficult to control the screwing in Depth, it is easy to scre...

AI Technical Summary

Problems solved by technology

[0002] Ordinary screwdriver bit clamping device has complex structure and single function, generally only has the functions of screwdriver bit clamping and replacement, which is very inconvenient to use. When operating, one hand needs to hold the screwdriver head holding device, and the other hand holds the screw, or screw the screw into a certain distance and then use the screwdriver head on the screwdriver head holding device to operate the screw, which is very inconvenient to operate. It is also easy to install the screw in the wrong direction. When the screw is screwed in, due to the high-speed rotation of the screw, it is easy to throw out the powder in the object and even cause the screw to be thrown out, causing personal injury. When the screw is locked, it is difficult to control the screwing in Depth, it is easy to screw in too deep, the torque is too large, causing the object to break, or it may be screwed in too shallow, resulting in insufficient pulling force, failure during use, etc.

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