CN106032160B

CN106032160B - Bicycle frame

Info

Publication number: CN106032160B
Application number: CN201510109409.1A
Authority: CN
Inventors: 安若飞; 余中飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-03-12
Filing date: 2015-03-12
Publication date: 2019-12-27
Anticipated expiration: 2035-03-12
Also published as: CN106032160A

Abstract

The invention relates to a bicycle frame, which comprises an upper tube, a seat tube and a rear fork, wherein the upper tube and the seat tube are connected in a multi-point mode through a detachable piece, and/or the upper tube and the rear fork are connected in a multi-point mode through the detachable piece. The rear fork comprises a rear fork front tube, a rear fork rear tube and a rear fork end piece, the rear fork front tube and the rear fork rear tube are connected through a detachable piece in a multi-point mode, and/or the rear fork rear tube and the rear fork end piece are connected through a detachable piece in a multi-point mode. The upper tube, the seat tube and the rear fork are of hollow structures. The hollow structure comprises an upper frame, a lower frame and a connecting rod, wherein the upper frame is connected with the lower frame through the connecting rod. According to the invention, the components are assembled without welding through a plurality of connecting points, so that the production flow is simplified; the two parts are connected more closely by utilizing the connecting holes, are not easy to separate, and the connection tightness is improved. Meanwhile, the problem that the part is easy to rotate around the connecting piece when only one connecting hole is used is solved; the hollow structure is adopted, so that the weight of the upper tube, the tube seat and the rear fork is reduced, and the upper tube, the tube seat and the rear fork have certain elasticity.

Description

Bicycle frame

Technical Field

The invention relates to the field of bicycle parts, in particular to a bicycle frame.

Background

The bicycle frame determines the type of a bicycle, and directly or indirectly influences various performances of the bicycle and riding comfort, and is one of main components of the bicycle. However, the existing frame has high requirements on material performance, a complex machining process and high requirements on skills of machining equipment and workers. When a bicycle runs on a bumpy road, a shock absorbing device is required to reduce the impact on the bicycle. In addition, existing frames are not highly repairable or flexible when deformation of the frame occurs in the event of an impact.

Disclosure of Invention

The invention aims to provide a bicycle frame, which can be assembled without welding by workers and meets the strength requirement of the bicycle.

In order to achieve the purpose, the invention provides the following technical scheme:

a bicycle frame comprises an upper tube, a seat tube and a rear fork, wherein the upper tube and the seat tube are connected through detachable pieces at multiple points, and/or the upper tube and the rear fork are connected through detachable pieces at multiple points. The two parts of the bicycle frame are connected more tightly by utilizing multi-point connection, and the connection tightness between the parts is improved. The components can be assembled without welding, and the production flow of the frame is simplified. Meanwhile, the problem that the part is easy to rotate around the connecting piece when only one connecting hole is used is solved.

Furthermore, the rear fork comprises a rear fork front tube, a rear fork rear tube and a rear fork end piece, the rear fork front tube and the rear fork rear tube are connected through a detachable piece in a multi-point mode, and/or the rear fork rear tube and the rear fork end piece are connected through a detachable piece in a multi-point mode. The rear fork comprises a plurality of components, and multi-point connection is adopted to improve connection tightness. The rear fork is decomposed into a plurality of parts, and is conveniently produced in a modularized mode.

In some embodiments, the multipoint connection includes a primary connection point and secondary connection points, the secondary connection points being distributed around the primary connection point. The auxiliary connection point is used for improving the connection force of the main connection point. When the number of secondary attachment points is multiple, the secondary attachment points may be distributed evenly around the primary attachment point or unevenly around the primary attachment point.

In some embodiments, the multi-point connection comprises three or more connection points, and the connection points are distributed in a polygon shape. The connection points on the polygon may be uniformly distributed or may be non-uniformly distributed. The connecting points which are distributed in a polygonal shape are adopted, so that a connecting surface is formed between the connecting points, and the connecting strength of each part is improved.

In some embodiments, the number of secondary connection points is two or more, the secondary connection points being evenly distributed around the primary connection point. A connecting surface is formed between the auxiliary connecting points and the main connecting point, so that the connecting strength of each part is improved.

In some embodiments, the number of primary connection points is one and the number of secondary connection points is six, the six secondary connection points being evenly distributed around the perimeter of the primary connection point. Six auxiliary holes are uniformly arranged on the periphery of the main hole, so that an isosceles triangle connecting structure is formed between every two adjacent auxiliary holes and the main hole, the optimal rotation preventing effect is achieved, and the connecting strength between the two parts is highest.

In some embodiments, the number of connection points is six, and the six connection points are distributed in a regular hexagon.

In some embodiments, one or more of the top tube, seat tube, and rear fork are hollow. The hollow structure is adopted, so that the weight of the upper tube, the seat tube and the rear fork is reduced, and meanwhile, each part has certain elasticity.

In some embodiments, the hollow structure includes an upper frame, a lower frame, and a connecting rod, and the upper frame is connected with the lower frame through the connecting rod. The upper frame and the lower frame are adopted to limit the shapes of the upper tube, the seat tube and the rear fork, and the parts are realized with hollow structures through connecting rods connected between the upper frame and the lower frame. Meanwhile, the bicycle frame can meet the requirements of the shape and the rigidity of the bicycle frame.

In some embodiments, the front rib, the rear rib and the rear fork end member of the rear fork are connected with each other to form an arc shape, so that the function of a leaf spring is provided, and the shock absorption effect of the frame is further improved.

The invention has the beneficial effects that:

1) the upper tube, the seat tube and the rear fork are connected in a multi-point mode through the detachable pieces, so that all parts are not required to be assembled through welding, and the production flow of the frame is simplified;

2) the two parts are connected more closely by using a multipoint connection mode, are not easy to separate, the connection tightness is improved, and the problem that the parts are easy to rotate around the connecting piece when only one connecting hole is used is solved;

3) the hollow structure is adopted, so that the weight of the upper tube, the seat tube and the rear fork is reduced, and meanwhile, each part has certain elasticity;

4) muscle, back fork back muscle and back fork end part interconnect form an arc before the back fork, possess leaf spring's function, further improve the shock attenuation effect of frame.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of embodiment 1;

FIG. 3 is an enlarged view of part A of example 1;

fig. 4 is an enlarged view of the connection portion of embodiment 2.

The rear fork connecting structure comprises an upper pipe 1, an upper pipe 2, a seat pipe 3, a rear fork 3.1, a rear fork front rib 3.2, a rear fork rear rib 3.3, a rear fork end piece 4.1, a main connecting point 4.2, an auxiliary connecting point 4.3, a connecting point 5, a hollow structure 5.1, an upper frame 5.2, a connecting rod 5.3 and a lower frame.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the bicycle frame in this embodiment includes a top tube 1, a seat tube 2 and a rear fork 3. The middle part of the upper tube 1 is connected with the seat tube 2, and the tail end of the upper tube 1 is connected with the rear fork 3. The rear fork 3 comprises a rear fork front rib 3.1, a rear fork rear rib 3.2 and a rear fork end piece 3.3. The front part 3.1 of the rear fork is connected with a rear rib 3.2 of the rear fork, and the rear rib 3.2 of the rear fork is connected with a rear fork end piece 3.3. The connection parts of each part and other parts are provided with a main connection point 4.1 and six auxiliary connection points 4.2. The main connection point 4.1 and the six auxiliary connection points 4.2 are all provided with holes, and the holes of the main connection point 4.1 are larger than the holes of the auxiliary connection points 4.2. The components are tightly connected through the openings by bolts and nuts. Muscle 3.1, back vent back muscle 3.2 and back vent end piece 3.3 interconnect back form an arc, possess leaf spring's function before the back vent.

The upper tube 1, the seat tube 2 and the rear fork 3 are all hollow structures 5. The hollow structure 5 comprises an upper frame 5.1, a lower frame 5.3 and a connecting rod 5.2. The upper frame 5.1 and the lower frame 5.3 are connected by welding a plurality of connecting rods 5.3.

Example 2

The bicycle frame in this embodiment comprises various parts as in embodiment 1, but the connection parts of the various parts and other parts are provided with a plurality of connection points 4.3, and the connection points 4.3 are holes with the same size, as shown in fig. 4. The components are tightly connected through the openings by bolts and nuts.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a bicycle frame, includes top tube, seat pipe and back fork, its characterized in that: the upper pipe and the seat pipe are connected in a multi-point mode through the detachable piece, and the upper pipe and the rear fork are connected in a multi-point mode through the detachable piece;

one or more of the upper tube, the seat tube and the rear fork are in hollow structures;

the hollow structure comprises an upper frame, a lower frame and a connecting rod, wherein the upper frame is connected with the lower frame through the connecting rod;

the rear fork comprises a rear fork front rib, a rear fork rear rib and a rear fork end piece, the rear fork front rib and the rear fork rear rib are connected in a multi-point mode through a detachable piece, and/or the rear fork rear rib and the rear fork end piece are connected in a multi-point mode through the detachable piece;

the multipoint connection comprises a main connection point and auxiliary connection points, and the auxiliary connection points are distributed around the main connection point;

the number of the main connecting points is one, the number of the auxiliary connecting points is six, and the six auxiliary connecting points are uniformly distributed on the periphery of the main connecting points;

the front rib of the rear fork, the rear rib of the rear fork and the rear fork end piece are connected with each other to form an arc shape.