阅读说明：本技术 一种便于检修的自行车车架 (Bicycle frame convenient to overhaul ) 是由 张成礼 于 2019-12-11 设计创作，主要内容包括：本发明涉及自行车配件领域,尤其涉及一种便于检修的自行车车架,包括：头管、上管、下管、车座立管及两个后叉管,所述后叉管包括与车座立管固接的固定管及与固定管可拆卸连接的活动管,使用本发明中的车架制成的自行车当需要检修时,只需将活动管与固定管分开,转动活动管,即可将内胎从活动管与固定管之间的间隙中进行拆装,方便快捷,极大提高了自行车检修的效率,且降低了劳动强度。(The invention relates to the field of bicycle accessories, in particular to a bicycle frame convenient to overhaul, which comprises: the bicycle made of the bicycle frame in the invention only needs to separate the movable tube from the fixed tube and rotate the movable tube, so that the inner tube can be disassembled and assembled from the gap between the movable tube and the fixed tube.)

1. A bicycle frame convenient to overhaul, comprising: a head tube, an upper tube, a lower tube, a saddle vertical tube and two back fork tubes,

the back breeches pipe includes the movable tube of being connected with the fixed pipe of saddle riser rigid coupling and can dismantle with fixed pipe, the lower extreme rigid coupling of two movable tubes, and the upper end of movable tube is equipped with corresponding connecting portion respectively with the one end that the fixed pipe that corresponds is close to the movable tube, connecting portion are the half cylinder type, and the movable tube becomes cylinder type and cover with the connecting portion overlap joint of fixed pipe and is equipped with the strengthening sleeve, and the screw passes strengthening sleeve and two connecting portions in proper order and makes movable tube and fixed union coupling.

2. An easy access bicycle frame as claimed in claim 1, wherein the reinforcement sleeve comprises two protective plates of circular arc cross-section.

3. An easy-to-service bicycle frame as claimed in claim 2, wherein step platforms are provided between the fixed tube and the connecting portion and between the movable tube and the connecting portion, and the outer diameter of the reinforcing sleeve is the same as the outer diameters of the fixed tube and the movable tube.

Technical Field

The invention relates to the field of bicycle accessories, in particular to a bicycle frame convenient to overhaul.

Background

The bicycle frame is used as a framework of the whole bicycle, the correctness and the comfort of riding postures are determined and influenced to the greatest extent, and the materials for manufacturing the bicycle frame at present mainly comprise the following materials: steel, aluminum alloys, titanium alloys, magnesium alloys, scandium alloys, carbon fibers, and the like.

When the rear wheel inner tube needs to be replaced, the bicycle wheel can be completely detached from the rear fork to be operated due to structural limitation, and the replacement efficiency is low and very inconvenient.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and provide a replaceable and easy-to-repair bicycle frame without detaching wheels from the bicycle frame.

The invention is realized by the following technical scheme:

a bicycle frame convenient to overhaul, comprising: the bicycle seat comprises a head pipe, an upper pipe, a lower pipe, a saddle vertical pipe and two rear fork pipes, wherein one ends of the two rear fork pipes are fixedly connected with the saddle vertical pipe respectively, the other ends of the two rear fork pipes are fixedly connected with the saddle vertical pipe to form a triangular structure, the structural strength is improved,

the rear fork tube comprises a fixed tube fixedly connected with the seat vertical tube and a movable tube detachably connected with the fixed tube, when the bicycle needs to be overhauled, the inner tube can be disassembled and assembled from the gap between the movable tube and the fixed tube only by separating the movable tube from the fixed tube and rotating the movable tube, the bicycle is convenient and rapid, the overhauling efficiency of the bicycle is greatly improved, the labor intensity is reduced, the lower ends of the two movable tubes are fixedly connected, the upper ends of the movable tubes and the corresponding ends of the fixed tubes, which are close to the movable tubes, are respectively provided with a corresponding connecting part, the connecting parts are semi-cylindrical, the connecting parts of the adjacent movable tubes and the fixed tubes are lapped into a cylindrical shape and are sleeved with a reinforcing sleeve, a screw sequentially penetrates through the reinforcing sleeve and the two connecting parts to connect the movable tubes and the fixed tubes, the outer diameter of the connecting parts is close to the inner diameter of the reinforcing sleeve, the effect of reinforcing support, prevent deformation after long-time use and prolong the service life of the frame.

Preferably, strengthen the sleeve pipe and include that two cross-sections are the protection shield of circular arc type, it is more convenient to install, and inseparabler with the laminating of connecting portion, and joint strength is high.

Preferably, step platforms are arranged between the fixed pipe and the connecting portion and between the movable pipe and the connecting portion, the outer diameter of the reinforcing sleeve is the same as that of the fixed pipe and that of the movable pipe, no protruding portion exists after the reinforcing sleeve is connected with the rear fork pipe, and attractiveness is improved.

The invention has the beneficial effects that:

when the bicycle manufactured by using the frame disclosed by the invention needs to be overhauled, the inner tube can be disassembled and assembled from a gap between the movable tube and the fixed tube by only separating the movable tube from the fixed tube and rotating the movable tube, so that the bicycle is convenient and quick, the overhauling efficiency of the bicycle is greatly improved, and the labor intensity is reduced.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic structural view of the rear fork tube.

In the figure: 1. the bicycle seat comprises a head pipe, 2. an upper pipe, 3. a lower pipe, 4. a seat vertical pipe, 5. a rear fork pipe, 6. a fixed pipe, 7. a movable pipe, 8. a connecting part and 9. a reinforcing sleeve.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

As shown in the figures, the present invention comprises: a head pipe 1, an upper pipe 2, a lower pipe 3, a saddle vertical pipe 4 and two rear fork pipes 5, wherein one end of each rear fork pipe is fixedly connected with the saddle vertical pipe, the other end of each rear fork pipe is fixedly connected with the saddle vertical pipe to form a triangular structure with the saddle vertical pipe, the structural strength is improved,

the rear fork tube comprises a fixed tube 6 fixedly connected with the seat vertical tube and a movable tube 7 detachably connected with the fixed tube, when maintenance is needed, the inner tube can be disassembled from the gap between the movable tube and the fixed tube by separating the movable tube from the fixed tube and rotating the movable tube, the bicycle maintenance efficiency is greatly improved, the labor intensity is reduced, the lower ends of the two movable tubes are fixedly connected, the upper ends of the movable tubes and the corresponding ends of the fixed tubes, which are close to the movable tubes, are respectively provided with a corresponding connecting part 8, the connecting parts are semi-cylindrical, the connecting parts of the adjacent movable tubes and the fixed tubes are lapped into a cylindrical shape and are sleeved with a reinforcing sleeve 9, screws sequentially penetrate through the reinforcing sleeve and the two connecting parts to connect the movable tubes and the fixed tubes, the outer diameter of the connecting parts is close to the inner diameter of the reinforcing sleeve, the function of reinforcing support can be achieved, and the strength of the rear fork tube after connection is improved, prevent deformation after long-time use and prolong the service life of the frame.

Preferably, strengthen the sleeve pipe and include that two cross-sections are the protection shield of circular arc type, it is more convenient to install, and inseparabler with the laminating of connecting portion, and joint strength is high.

Preferably, step platforms are arranged between the fixed pipe and the connecting portion and between the movable pipe and the connecting portion, the outer diameter of the reinforcing sleeve is the same as that of the fixed pipe and that of the movable pipe, no protruding portion exists after the reinforcing sleeve is connected with the rear fork pipe, and attractiveness is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.