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Locking device of bicycle seat tube

A locking device, bicycle technology, applied to bicycle saddles, bicycle racks, bicycle accessories, etc., can solve the problems of not being able to lock the seat tube, losing the locking effect of the clamp, time-consuming and labor-intensive, etc., and achieve the effect of neat appearance

Inactive Publication Date: 2012-06-13
苏州诺雅电动车有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this utility model is to utilize the clamping force when the elastic body is locked by bolts to lock the seat tube on the frame tube. , there is no axial limit, so when the pressure exerted on the bicycle seat cushion is greater than the friction force generated by the radial clamping force, the seat tube will move down along the frame tube, so that the seat tube cannot be locked, and the clamp will be lost locking action, and this failure condition is unavoidable
At the same time, the elastic body is locked with bolts. Every time you clamp or loosen the seat tube, you need to bend down to rotate the bolts, which is time-consuming and labor-intensive

Method used

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  • Locking device of bicycle seat tube
  • Locking device of bicycle seat tube
  • Locking device of bicycle seat tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment one: see figure 1 ~ Figure 4 As shown, a bicycle seat tube locking device is a bicycle seat tube locking device. The locking device is composed of a wedge-shaped sleeve 3, a pull rod 7, and a wrench 6 sleeved on the lower end of the bicycle seat tube 1. The wedge-shaped The sleeve 3 is an open pipe with a semi-closed lower end, the inner surface of the wedge-shaped sleeve 3 is a first wedge-shaped surface, and the outer cylindrical surface of the lower end of the bicycle seat tube 1 is a second wedge-shaped surface that fits with the first wedge-shaped surface. The wedge fit between the wedge sleeve 3 and the bicycle seat tube 1 not only provides a radial clamping force for the bicycle seat tube, but also provides an axial supporting force for the bicycle seat tube, and the locking is reliable.

[0024] The upper end of the bicycle seat tube 1 is fixedly connected with the saddle clamp 2, the non-handle end of the wrench 6 is a cam structure, the outer edg...

Embodiment 2

[0028] Embodiment two: if Figure 5 As shown, the structure of the second embodiment is basically the same as that of the first embodiment, and the difference is that: the upper end of the bicycle seat tube 1 is fixedly connected with a seat clamp 2, and the seat clamp 2 is provided with a handle that matches the wrench 9. The wrench 9 is clamped in the slot, the upper end of the pull rod 7 is hinged to the end of the wrench 9, and is located between the end of the wrench 9 and the upper end surface of the bicycle seat tube 1. A locking spring 8 is sheathed on the pull rod 7 . Through the above-mentioned structure, turning the wrench 9 counterclockwise can release the clamping of the bicycle seat tube 1 to the wrench 9, and the up and down position of the bicycle seat cushion can be adjusted.

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PUM

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Abstract

The invention discloses a locking device of a bicycle seat tube. The locking device is composed of a wedge-shaped sleeve sleeved at the lower end of the bicycle seat tube, a pull rod and a spanner, wherein the lower end of the bicycle seat tube is provided with a second wedge-shaped surface along the axial direction, and a first wedge-shaped face wedged with the second wedge-shaped face is arranged on the wedge-shaped sleeve; and the spanner is arranged above the bicycle seat tube, the upper end of the pull rod is hinged on the spanner, and the lower end of the pull rod is fixedly connected with the wedge-shaped sleeve. According to the invention, the vertical position of the seat tube is locked by using the wedge-shaped fit between the wedge-shaped sleeve and the bicycle seat tube; and in comparison with the conventional single-ring locking, the locking device disclosed by the invention has the advantages of capability of realizing locking of an upper ring and a lower ring, safety and reliability and clean and tidy appearance. The height of the seat tube can be adjusted without bending down, and even adjusted in the process of riding; and therefore, the function is very practical while running downhill.

Description

technical field [0001] The invention belongs to the technical field of bicycles, in particular to a bicycle seat tube locking device. Background technique [0002] Chinese utility model patent CN2675516Y discloses a bicycle seat tube clamp, which is mainly composed of a cylindrical ring, an elastic deformation body and a bolt. The seat tube is inserted into the inside of the frame tube, and the cylindrical ring is sleeved on the top of the frame tube. The inner surface of the ring is provided with bumps, and the locking end of the cylindrical ring is provided with an elastic deformation body, which is locked by bolts. This structure can prevent the clamp from slipping when it is loosened, and does not need to increase the locking force when it is locked, and the clamp is light in weight and low in cost. But this utility model is to utilize the clamping force when the elastic body is locked by bolts to lock the seat tube on the frame tube. , there is no axial limit, so when...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62K19/36B62J1/08
Inventor 崔晓宏
Owner 苏州诺雅电动车有限公司