CN214451586U

CN214451586U - Integrated into one piece formula bicycle frame

Info

Publication number: CN214451586U
Application number: CN202023232264.XU
Authority: CN
Inventors: 谭阳春
Original assignee: Foshan Meilihao Bicycle Accessories Co ltd
Current assignee: Foshan Meilihao Bicycle Accessories Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-22
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to an integrated bicycle frame, which comprises a head tube (1), a vertical tube (2), a flat tube (3), an upper beam (4), a lower beam (5), a vertical fork (6) and a flat fork (7), wherein the head tube (1), the vertical tube (2), the flat tube (3), the upper beam (4), the lower beam (5), the vertical fork (6) and the flat fork (7) are connected by integrated die casting, the cross section of the upper beam (4) is in a T shape and comprises a cross beam plate and a vertical rib plate, the lower beam (5) is in a hollow tubular shape, the lower end surface of the lower beam is provided with an opening, the flat tube (3) is arranged on the lower end lower side surface of the lower beam (5), the lower end of the vertical tube (2) is connected with the upper end surface of the lower beam (5), the middle part of the vertical tube (2) is connected with the upper beam (4), the upper end of the vertical tube (2) extends upwards to the upper part of the upper beam (4), the utility model has simple structure, the mechanical strength is high, the service life is long, the use safety is high, the overall streamline shape is realized, the appearance is attractive, the one-time die-casting forming is realized, and the production and processing efficiency is high.

Description

Integrated into one piece formula bicycle frame

Technical Field

The utility model relates to a bicycle technical field, concretely relates to integrated into one piece formula bicycle frame.

Background

The bicycle is a green vehicle and also a sports fitness device. Bicycles are in great demand at home and abroad. The existing universal bicycle frame comprises a head tube, an upper tube, a lower tube, a middle tube, a five-way joint, a vertical fork and a bottom fork, the single-processing integral welding process is adopted for production, the head tube, the upper tube, the lower tube, the middle tube, the five-way joint, the vertical fork and the bottom fork are subjected to single part processing, and the head tube, the upper tube, the lower tube, the middle tube, the five-way joint, the vertical fork and the bottom fork are welded together by the welding process to form the integral bicycle frame. The existing bicycle frame production process method generates a plurality of welded joints, the welded joints not only influence the overall aesthetic degree of the bicycle, but also have uneven structure of a heat affected zone of the welded joints and concentrated stress, the electric corrosion of welding seams becomes a failure source of the whole bicycle frame, the welded joints can be damaged in advance in subsequent quality test and use, the fatigue resistance and the damage resistance are low, the service life is short, and potential safety hazards are brought to riders. The whole frame of integrated into one piece can be accomplished to current carbon fiber bicycle frame, does not have welded joint, and light in weight intensity is good, but because of its production and processing technology is complicated, the productivity is little can not satisfy the volume production shipment demand to because carbon fiber material's structural characteristic, in the later stage use, once the surface fish tail will cause frame irreversible damage, the fracture of failing fast has very big potential safety hazard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the not enough of prior art existence, provide an integrated into one piece formula bicycle frame, simple structure is novel, and mechanical strength is high, long service life, and the safety in utilization is high, and whole streamline shape, the outward appearance is pleasing to the eye, disposable die-casting shaping, production machining efficiency is high.

The utility model adopts the technical proposal that: an integrally formed bicycle frame comprises a head pipe 1, a vertical pipe 2, a flat pipe 3, an upper beam 4, a lower beam 5, a vertical fork 6 and a flat fork 7, wherein the head pipe 1, the vertical pipe 2, the flat pipe 3, the upper beam 4, the lower beam 5, the vertical fork 6 and the flat fork 7 are integrally connected through die-casting, the cross section of the upper beam 4 is in a T shape and comprises a cross beam plate and a vertical rib plate, the lower beam 5 is in a hollow tubular shape, an opening is formed in the lower end face of the lower beam, the flat pipe 3 is arranged on the lower end lower side face of the lower beam 5, the lower end of the vertical pipe 2 is connected with the lower end upper side face of the lower beam 5, the middle of the vertical pipe 2 is connected with the upper beam 4, and the upper end of the vertical pipe 2 upwards extends to the outside above the upper beam 4.

The improved structure is characterized in that the upper end of the upper beam 4 is connected with the upper end of the lower beam 5, the upper end of the lower beam 5 is connected with the head pipe 1, the front end of the vertical fork 6 is connected with the lower end of the upper beam 4, the front end of the bottom fork 7 is connected with two side faces of the lower end of the lower beam 5, the rear end of the vertical fork 6 is connected with the rear end of the bottom fork 7, a front triangular hollow frame 8 is formed among the vertical pipe 2, the upper beam 4 and the lower beam 5, and a rear triangular hollow frame 9 is formed among the vertical pipe 2, the vertical fork 6 and the bottom fork 7.

The further improvement is that the flat pipe 3 is connected with the lower beam 5 through a connecting rib plate 31.

The further improvement is that the vertical fork 6 is V-shaped, the inner side of the front end of the vertical fork is provided with a connecting arc, the bottom fork 7 is V-shaped, and the inner side of the front end of the bottom fork is provided with a connecting arc.

The rear end of the vertical fork 6 is provided with a bending connecting part 61, an angle A is formed between the bending connecting parts, the value of the angle A is 110-160 degrees, and the rear end of the vertical fork 6 is connected with the rear end of the bottom fork 7 through the bending connecting part 61.

The further improvement is that the rear ends of the vertical fork 6 and the bottom fork 7 are provided with material reducing grooves.

The further improvement is that the materials of the head pipe 1, the vertical pipe 2, the flat pipe 3, the upper beam 4, the lower beam 5, the vertical fork 6 and the flat fork 7 are magnesium-manganese alloy or magnesium-aluminum alloy.

Compared with the prior art, the utility model following beneficial effect has:

the T-shaped cross section structure of the upper beam and the hollow tubular structure and the flat tube structure with the opening on the lower end surface of the lower beam are arranged on the lower side surface structure of the lower end of the lower beam, so that the integral frame can be formed by one-time die casting, the mechanical strength is high, the appearance is attractive, and the production and processing efficiency is high;

the rear end of the vertical fork is connected with the rear end of the bottom fork through the bent connecting part, so that the bearing stress performance of the frame is enhanced, the overall stress of the frame is more balanced, the service life is long, and the safety in use is high.

Drawings

Figure 1 is a schematic structural diagram of the present invention,

FIG. 2 is a schematic view of the front axial three-dimensional structure of the present invention,

fig. 3 is the schematic diagram of the three-dimensional structure of the oblique axis of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

As shown in fig. 1, 2 and 3, an integrally formed bicycle frame comprises a head tube 1, a vertical tube 2, a flat tube 3, an upper beam 4, a lower beam 5, a vertical fork 6 and a flat fork 7, wherein the head tube 1, the vertical tube 2, the flat tube 3, the upper beam 4, the lower beam 5, the vertical fork 6 and the flat fork 7 are integrally connected by die-casting, the material of the head tube is magnesium-manganese alloy or magnesium-aluminum alloy, the cross section of the upper beam 4 is in a T shape and comprises a cross beam plate and a vertical rib plate, the lower beam 5 is in a hollow tubular shape, the lower end surface of the lower beam is provided with an opening, the flat tube 3 is arranged on the lower end lower side surface of the lower beam 5, the flat tube 3 is connected with the lower beam 5 through a connecting rib plate 31, the lower end of the vertical tube 2 is connected with the lower end upper side surface of the lower beam 5, the middle part of the vertical tube 2 is connected with the upper beam 4, the upper end of the vertical tube 2 extends upwards to the upper part of the upper beam 4, the upper end of the upper beam 4 is connected with the upper end of the lower beam 5, the front end of the vertical fork 6 is connected with the lower end of the upper beam 4, the front end of the bottom fork 7 is connected with two side surfaces of the lower end of the lower beam 5, the rear end of the vertical fork 6 is connected with the rear end of the bottom fork 7, a front triangular hollow frame 8 is formed among the vertical pipe 2, the upper beam 4 and the lower beam 5, and a rear triangular hollow frame 9 is formed among the vertical pipe 2, the vertical fork 6 and the bottom fork 7.

In order to enhance the bearing and stress performance of the frame and enable the whole frame to be stressed more evenly, the vertical fork 6 is in a V shape, a connecting arc is arranged on the inner side of the front end of the vertical fork 6, the bottom fork 7 is in a V shape, a connecting arc is arranged on the inner side of the front end of the bottom fork, a bent connecting portion 61 is arranged at the rear end of the vertical fork 6, an angle A is formed between the bent connecting portion 61 and the bottom fork, the numerical value of the angle A ranges from 110 degrees to 160 degrees, the rear end of the vertical fork 6 is connected with the rear end of the bottom fork 7 through the bent connecting portion 61, and material reducing grooves are formed in the rear ends of the vertical fork 6 and the bottom fork 7.

This integrated into one piece formula bicycle frame, the transversal "T" style of calligraphy of personally submitting of upper beam 4, underbeam 5 is hollow tubulose, and its lower terminal surface is equipped with the opening, and flat tube 3 sets up the lower extreme downside at underbeam 5, and brand-new integrated die-casting shaping structural design carries out the lower extreme design of loosing core to underbeam 5, strengthens the connection structural design to riser 2, flat tube 3, upper beam 4, and the whole die-casting of frame is loosed core and is formed, and mechanical strength is high, and the outward appearance is pleasing to the eye, and production and processing efficiency is high, and the yield is high.

Without being limited thereto, any changes or substitutions which are not thought of through creative efforts should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides an integrated into one piece formula bicycle frame, characterized in that, including head tube (1), riser (2), plain tube (3), upper beam (4), underbeam (5), vertical fork (6) and flat fork (7), head tube (1), riser (2), plain tube (3), upper beam (4), underbeam (5), vertical fork (6) and flat fork (7) are connected for integrative die-casting shaping, the transversal "T" word shape that personally submits of upper beam (4), it includes crossbeam board and vertical gusset, underbeam (5) are hollow tube form, its lower terminal surface is equipped with the opening, plain tube (3) set up the lower extreme downside at underbeam (5), the lower extreme of riser (2) is connected with the lower extreme upside of underbeam (5), the middle part of riser (2) is connected with upper beam (4), the upper end of riser (2) upwards extends to the outside of upper beam (4).

2. The integrally formed bicycle frame as claimed in claim 1, wherein the upper end of the upper beam (4) is connected with the upper end of the lower beam (5), the upper end of the lower beam (5) is connected with the head tube (1), the front end of the vertical fork (6) is connected with the lower end of the upper beam (4), the front end of the bottom fork (7) is connected with two side surfaces of the lower end of the lower beam (5), the rear end of the vertical fork (6) is connected with the rear end of the bottom fork (7), a front triangular hollow frame (8) is formed among the vertical pipe (2), the upper beam (4) and the lower beam (5), and a rear triangular hollow frame (9) is formed among the vertical pipe (2), the vertical fork (6) and the bottom fork (7).

3. An integrally formed bicycle frame according to claim 1, characterised in that the flat tube (3) is connected to the lower beam (5) by means of a connecting web (31).

4. An integrally formed bicycle frame as claimed in claim 2, wherein the seat stays (6) are shaped like a "V" with connecting arcs on the inner side of the front ends thereof, and the bottom stays (7) are shaped like a "V" with connecting arcs on the inner side of the front ends thereof.

5. An integrally formed bicycle frame according to claim 1, characterised in that the rear ends of the seat stays (6) are provided with bent connection parts (61) between which an angle a is formed, the angle a having a value of 110-160 °, and the rear ends of the seat stays (6) are connected to the rear ends of the bottom stays (7) through the bent connection parts (61).

6. An integrally formed bicycle frame according to claim 5, characterised in that the rear ends of the seat stays (6) and the bottom stays (7) are provided with material reducing grooves.

7. An integrally formed bicycle frame according to claim 1, characterised in that the material of the head tube (1), the stand tube (2), the flat tube (3), the upper beam (4), the lower beam (5), the seat stays (6) and the seat stays (7) is magnesium manganese alloy or magnesium aluminum alloy.