One-way driving linear actuator with hand-rotating release device

Abstract

The invention discloses a one-way driving linear actuator with a hand-rotating release device, and belongs to the technical field of linear transmission. The one-way driving linear actuator comprisesa driving motor, a transmission component, a rotating lead screw, a transmission nut, an inner tube, an outer tube, a front puller and the hand-rotating release device, a connecting sleeve and a firstguide ring are arranged on the transmission nut, the connecting sleeve and the transmission nut are relatively fixed in the axial direction, the first guide ring and the transmission nut are relatively fixed in the axial direction, the first guide ring and the transmission nut rotate relatively and freely in the circumferential direction, the outer pipe cooperates with the first guide ring so that the first guide ring can move in the outer pipe in the axial direction in a matched mode, the connecting sleeve is detachably connected with the inner pipe in an inserted mode in the axial direction, and when the rotating lead screw rotates in the forward direction, the end of the connecting sleeve abuts against the end of the inner pipe so as to drive the inner pipe to stretch out relative to the outer pipe. The one-way driving linear actuator with the hand-rotating release device has the advantages that the linear actuator only has a one-way pushing function, has better safety and furtherhas a hand-rotating releasing function at the same time.

Description

【Technical field】 [0001] The invention relates to a one-way driving linear actuator with a hand-rotating release device, which belongs to the technical field of linear transmission. 【Background technique】 [0002] Linear actuators, also known as electric push rods, are widely used in furniture, medical equipment, solar power generation, etc. The main structure includes a drive motor, a drive worm, a worm wheel, a screw, and a nut. The working principle is that the drive motor drives the drive worm Rotation, the transmission worm meshes with the worm wheel to drive the worm wheel to rotate, the worm wheel to drive the screw to rotate, the screw to rotate to drive the nut to move axially, the nut is generally connected to the inner tube, so as to realize the telescopic movement of the inner tube. [0003] The traditional linear actuator is driven by the drive motor for extension and retraction. However, this drive method makes the drive motor reverse and drive the inner tube t...

AI Technical Summary

Problems solved by technology

[0003] The traditional linear actuator is driven by the drive motor for extension and retraction, but this drive method makes the drive motor reverse and drive the inner tube to retract, and it will not stop when it encounters foreign objects, which is easy to cause damage or Human body damage, especially for curious children, who like to touch and explore with their hands, are easy to be pinched, with high risk and low safety performance

Therefore, it is also necessary to develop this kind of anti-pinch linear actuator, so linear actuators that can only drive in one direction have begun to appear on the market, but this type of linear actuator usually has a more complicated structure.

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