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Quick release structure of telescopic pipe fitting

A technology of telescopic tubes and outer tubes, applied in the direction of connecting components, rods, mechanical equipment, etc., can solve the problems of inability to achieve the tightening effect, inconvenient operation to pull the lever, reduce the tightening force, etc., and achieve easy operation and extended The effect of improving service life and reliability

Pending Publication Date: 2019-11-05
天津富士达自行车工业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The eccentric structure achieves the tightening effect by rotating the eccentric wrench to change the axis of the wrench and the radius of the top support edge. When the eccentric radius is large, the tightening force can be increased, but it requires a larger force to turn the wrench. lever, which will cause inconvenient operation and excessive force on the lever will also cause damage to the parts
On the contrary, when the eccentric radius is small, the trigger lever can be turned with a small force, but this will reduce the tightening force, so that the position of the telescopic pipe will change during work, and the desired tightening effect cannot be achieved.
In other words, the existing quick release structure cannot simultaneously have the effects of high tightening force and easy operation

Method used

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  • Quick release structure of telescopic pipe fitting
  • Quick release structure of telescopic pipe fitting
  • Quick release structure of telescopic pipe fitting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see Figure 1-5 , a quick-release structure for telescopic pipe fittings, including an outer tube 1 and an inner tube 4, the outer tube 1 is sleeved on the outside of the inner tube 4, the outer tube 1 is provided with a quick-release structure 30, and the quick-release structure 30 includes a C-shaped A tie ring 31, a U-shaped handle 32, a positioning screw 33 and a rotating shaft 34, the C-shaped tie ring 31 is sleeved on the outside of the inner tube 4, and the opening ends of the C-shaped tie ring 31 respectively protrude with a first installation The first mounting portion 35 and the second mounting portion 356 are respectively provided with cylindrical through holes and non-cylindrical through holes coaxially, and the bottom end of the first mounting portion 35 is fixedly provided with a boss 352, the center of the boss 352 is provided with a threaded hole 353, the threaded hole 353 is threadedly connected to the positioning screw 33, one end of the positioning sc...

Embodiment 2

[0024] see Figure 1-5 , the other contents of this embodiment are the same as those of Embodiment 1, except that the non-cylindrical through holes on the second mounting portion 356 include oblong holes.

[0025] Working principle: when the quick release structure 30 tightens the inner tube 20, the U-shaped handle 32 needs to be pressed down. The positioning screw 33 drives the first mounting portion 35 to perform a helical lift motion along the helical groove 342 on the rotating shaft 34, compressing the space between the first mounting portion 35 and the second mounting portion 36 on the C-shaped collar 31. the gap, continue to press down the U-shaped handle 32, when the positioning boss 321 on the U-shaped handle 32 is in contact with the lower surface of the second mounting part 36, the tightening force reaches the maximum, and the inner tube 20 is fixed at the selected position .

[0026] When the quick release structure 30 releases the inner tube 20, the U-shaped hand...

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PUM

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Abstract

The invention discloses a quick release structure of a telescopic pipe fitting, and relates to the field of quick release structures. An outer pipe and an inner pipe are included, the outer pipe is connected to the exterior of the inner pipe in a sleeving manner, the outer pipe is provided with the quick release structure, the quick release structure comprises a C-shaped clamp, a U-shaped wrench,a positioning screw and a rotating shaft, the C-shaped clamp is arranged on the exterior of the inner pipe in a sleeving manner, the two ends of an opening of the C-shaped clamp protrude and extend toform a first mounting portion and a second mounting portion, the first mounting portion and the second mounting portion are coaxially provided with a cylindrical through hole and a non-cylindrical through hole, and the bottom end of the first mounting portion is fixedly provided with a boss. The quick release structure has the effects of saving labor and being easy to operate, the problem of component damage can be reduced, the service life of the quick release structure is effectively prolonged, and the reliability is improved.

Description

technical field [0001] The invention relates to the field of quick-release structures, in particular to a quick-release structure for telescopic pipe fittings. Background technique [0002] The telescopic structure of pipe fittings is generally composed of an outer tube and an inner tube that is inserted into the outer tube and can slide axially inside the outer tube. It is usually used in places where the length or height needs to be adjusted at any time. For example, the seat tube and seat tube of a bicycle are a telescopic structure, and in order to allow the seat tube to be fixed in length according to requirements, a quick release structure that can selectively generate a tightening effect is usually provided at the top of the seat tube. The locking force of the quick release structure is generally provided by an eccentric structure. [0003] The eccentric structure achieves the tightening effect by rotating the eccentric lever to change the axis of the lever and the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B7/14
CPCF16B7/1418
Inventor 李洪松邢燕铭
Owner 天津富士达自行车工业股份有限公司