Telescopic positioning device and application thereof

Abstract

The invention discloses a telescopic positioning device and application thereof and belongs to the technical field of telescopic connection. Engaging positioning or separation telescopic type connection is achieved through convex and concave engaging mechanisms which are evenly and continuously distributed; each convex and concave engaging mechanism comprises a convex tooth component and a groove component engaged with or disengaged from the convex tooth component; the engaging portion of each convex tooth component is provided with at least one partition groove in the cross section perpendicular to the relative displacement direction so that the two parts can stretch out and draw back and can be positioned; the convex and concave engaging mechanisms comprise the rotating engaging mechanism of non-complete round threads, the wedge expansion engaging mechanism and the rotating engaging mechanism of a non-circular cross section cam shaft; and the rotating engaging mechanism of the non-complete round threads can be applied to functional mechanisms of lifting and folding position restoration of bike seats or bike handlebars. The telescopic positioning device achieves the fast telescopic adjusting, locking and positioning through the threads or a pawl mechanism. Compared with a similar hydraulic or pneumatic mechanism, the telescopic positioning device is easy to manufacture, low in weight and reliable in performance, and cost is substantially reduced.

Description

technical field [0001] The invention belongs to the technical field of telescopic connection, in particular relates to a telescopic positioning device, and also relates to its application. Background technique [0002] At present, the adjustment and fixing of the saddle tube (also known as seat post) of ordinary bicycles or folding bicycles and the stand tube (also called seat tube) on the frame is to relax or contract the stand tube by bolts or cam mechanisms (quick clips). The inner diameter of the tube can achieve the purpose of loosening or holding the saddle tube tightly. Some of these existing technologies need special tools to adjust, and some do not need special tools to adjust, but it is very laborious, and the reliability is not high. The main defect of sinking and turning phenomenon is that it cannot realize the function of automatic shrinking and unfolding when applied to a folding bicycle, let alone the requirement of the saddle height adjustment position recove...

AI Technical Summary

Problems solved by technology

[0002] At present, the adjustment and fixing of the saddle tube (also known as seat post) of ordinary bicycles or folding bicycles and the stand tube (also called seat tube) on the frame is to relax or contract the stand tube by bolts or cam mechanisms (quick clips). The inner diameter of the tube can achieve the purpose of loosening or holding the saddle tube tightly. Some of these existing technologies need special tools to adjust, and some do not need special tools to adjust, but it is very laborious, and the reliability is not high. The phenomenon of sinking and turning, the main defect is that it cannot realize the function of automatic retraction and expansion when applied to folding bicycles, let alone the requirement of the saddle height adjustment position recovery function

Images