Telescopic pipe

A telescopic tube and root canal technology, which is used in the connection of rods, connecting components, mechanical equipment, etc., can solve the problems of laborious push rods, increased friction, and laborious push rods, so as to reduce friction, elongation and labor-saving, simple structure

Active Publication Date: 2014-11-19
胡建明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. As the first tube is pushed farther, under the action of gravity, the bending degree of the telescopic tube as a whole increases continuously. Under the condition that the thrust F of the push rod 1 remains unchanged, the telescopic tube is extended horizontally The component force will become smaller and smaller as the bending degree increases, that is to say, if you want to keep the horizontal elongation speed of the telescopic tube constant, the thrust F of the push rod 1 needs to be gradually increased. The harder it is to push the rod
[0005] 2. In addition, due to the increase of the bending degree of the telescopic tube, the friction between adjacent tubes will also increase, resulting in more effort to push the push rod

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1, the detachable mechanism includes a stopper 6 fixed on the push rod 5 and a stopper ring 4 fixed on the inner wall of the nth tube 2, and the stopper 6 is along the radial direction of the nth tube 2 The maximum distance between the two ends is larger than the inner diameter of the retaining ring 4 and smaller than the inner diameter of the nth pipe 2 . For example: when the stopper 6 is cylindrical and its axis is perpendicular to the axis of the push rod 5, the maximum distance between the two ends along the radial direction of the nth tube is the height of the cylinder, in other words, the two sides of the cylinder The distance between the two ends of the stopper 6 along the radial direction of the nth pipe is larger than the inner diameter of the stop ring 4 and smaller than the inner diameter of the nth pipe. 5 pass through the blocking ring 4 together, the inner wall of the nth pipe will not block the main block 6 and the blocking ring 4 will block t...

Embodiment 2

[0028] Embodiment 2, the detachable mechanism includes an inner sleeve 17 fixed to the big end of the nth tube 2, an outer sleeve 16 fixed to the big end of the n+mth tube 3, and a stopper fixed on the push rod 5. Block 6, the maximum distance between the two ends of the stopper 6 along the radial direction of the nth pipe 2 is greater than the inner diameter of the inner sleeve 17 and smaller than the inner diameter of the outer sleeve 16, the inner sleeve 17 and the outer sleeve 16, a One is made of magnets and the other is made of magnetic materials. The advantage of the above detachable mechanism is that it is more orderly when the telescopic tube is stretched out. The inner sleeve 17 and the outer sleeve 16 are in the state of mutual adsorption when the telescopic tube is stationary or stretched out for the first time. When the stopper 6 pushes the inner sleeve At 17 o'clock, the two are separated and the telescopic tube is stretched out for the second time.

Embodiment 3

[0029]Embodiment 3. The detachable mechanism includes a sleeve 7 fixed to the big end of the nth tube 2, an elastic block 9 sliding between the sleeve 7 and the push rod 5, one end is connected to the elastic block 9 and the other end is connected to the The spring 8 connected to the casing 7 and the stopper 6 fixed to the push rod 5, the maximum distance between the two ends of the stopper 6 along the radial direction of the nth tube 2 is greater than the inner diameter of the elastic block 9 and smaller than the inner diameter of the right end of the sleeve 7 , the axial ends of the elastic block 9 are provided with a left flange 12 and a right flange 13, and the sleeve 7 is provided with shapes for axially limiting the elastic block 9 to be respectively aligned with the left flange 12 and the right flange 13. The left limit step 15 and the right limit step 14 matched by the flange 13, the sleeve is provided with a round hole, and a steel ball 10 is housed in the round hole, ...

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Abstract

The invention provides a telescopic pipe which is more effortless when being pushed. The telescopic pipe is composed of multiple hollow pipes, the diameters of the hollow pipes are decreased in sequence, and the hollow pipes are connected in sequence in a sleeved mode and can slide relatively. The two ends of each hollow pipe are regarded as a big end and a small end respectively. The outer diameter of the big end is larger than that of the small end of each hollow pipe, the first pipe (1) is connected with a push rod (5), and the outer circumferential face of the big end of the (n)th pipe (2) can be clamped by the inner circumferential face of the small end of the (n+1)th pipe when the (n)th pipe (2) extends out. The telescopic pipe is provided with a separating mechanism, so that when the push rod (5) is static, the (n)th pipe (2) is connected with a (n+m)th pipe, and when the push rod (5) is pushed, the (n)th pipe (2) is separated from the (n+m)th pipe. By partially reducing the bending degree of the telescopic pipe and friction between adjacent pipes, stretching of the telescopic pipe is effortless.

Description

technical field [0001] The invention relates to the technical field of telescopic mechanisms, in particular to a telescopic tube. Background technique [0002] As the name implies, the telescopic tube is a tubular part that can be extended or shortened, see figure 1 , the telescopic tube is composed of the first tube, the second tube, the third tube, the nth tube, and the n+m tube from the inside to the outside, n is an integer and n≥1, m is Integer and m≥1, the first tube is connected to the push rod, each tube is small at one end and large at the other end, and the nozzle at the small end is on the same side, when the telescopic tube is extended, the first tube is pushed by the push rod After the tube is stretched out, the tubes behind it are driven to protrude toward the side of the small end nozzle one by one. Refer to figure 1 , the small ends of all the tubes are facing to the left, that is, when the telescopic tube is extended, it protrudes to the left. The outer p...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F16B7/10
Inventor胡建明
Owner胡建明