CN220448052U

CN220448052U - Integrated bicycle frame

Info

Publication number: CN220448052U
Application number: CN202321571361.2U
Authority: CN
Inventors: 吴培建; 吴和升; 吴培繁; 吴年徕
Original assignee: Guangdong Dashuo Metal Materials Co ltd
Current assignee: Guangdong Dashuo Metal Materials Co ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2024-02-06
Anticipated expiration: 2033-06-19

Abstract

The utility model discloses an integrated bicycle frame, which comprises a bicycle head connecting pipe, a supporting beam, an upper cross beam, a lower cross beam, a middle pipe, a left rear fork frame and a right rear fork frame; the bicycle frame is formed by combining the bicycle head connecting pipe, the supporting beam, the upper cross beam, the lower cross beam, the middle pipe, the left rear fork frame and the right rear fork frame, and the supporting beam is arranged at the positions of the upper cross beam, the lower cross beam and the bicycle head connecting pipe, so that the structural strength of the front end is improved. The bicycle frame reduces the use of pipes, and the upper cross beam, the left rear fork frame and the right rear fork frame adopt a light structural design, so that the overall weight of the bicycle frame is reduced. The bicycle frame is manufactured by adopting integrated forming, the bicycle frame is stronger in integrity and better in rigidity, more stable riding experience can be provided, meanwhile, the welding quantity is reduced, and the cost is saved.

Description

Integrated bicycle frame

Technical Field

The utility model relates to the technical field of bicycles, in particular to an integrated bicycle frame.

Background

The common bicycle frame is formed by welding the hollow steel pipes and various connecting members, the welding process is complex, the requirement on welding operation is high, and stress points in the bicycle riding process are mostly concentrated at the welding positions, so that the fracture probability is increased, and cracks are easily generated at the welding positions to fracture; in addition, the welded frame has many solder joints in the outward appearance, and is whole not pleasing to the eye enough, and the whole quality of frame is also heavier, rides laboriously and the transport is inconvenient enough.

Therefore, how to improve the existing bicycle frame to solve the above-mentioned drawbacks is an important technical problem to be solved by those skilled in the art.

Disclosure of Invention

The present utility model provides an integrated bicycle frame to solve the problems set forth in the background art above. In order to achieve the above purpose, the present utility model provides the following technical solutions: an integrated bicycle frame comprises a bicycle head connecting pipe, a supporting beam, an upper cross beam, a lower cross beam, a middle pipe, a left rear fork frame and a right rear fork frame; one end of the upper cross beam and one end of the lower cross beam are respectively connected with the headstock connecting pipe; one end of the supporting beam is connected with the upper beam, the other end of the supporting beam is connected with the lower beam and the head connecting pipe, and the supporting beam, the upper beam and the head connecting pipe jointly form a triangular supporting structure; the inside of the lower cross beam is of a hollow structure, and wire inlet holes are respectively arranged on two side edges; the other end of the lower cross beam is provided with a middle support mounting hole; one side wall of the lower cross beam is respectively connected with the middle pipe and the left rear fork frame, and a first middle shaft mounting hole is formed in the connecting position; the other side wall of the lower cross beam is respectively connected with the middle pipe and the right rear fork frame, and a second middle shaft mounting hole is formed at the joint; the joints between the left rear fork frame and the right rear fork frame are arc-shaped structures; the left rear fork frame is provided with a first hanging hole, a temple mounting hole, a brake mounting hole and a first rear wheel mounting hole; and the right rear fork frame is provided with a second hanging hole, a transmission mounting hole and a second rear wheel mounting hole.

Preferably, the left rear fork frame comprises an upper left fork and a lower left fork, the upper left fork, the lower left fork and the middle pipe form a triangular support structure together, the included angle between the middle pipe and the upper left fork is 77 degrees, and the included angle between the middle pipe and the lower left fork is 65 degrees; the right rear fork frame comprises an upper right fork and a lower right fork, the upper right fork, the lower right fork and the middle pipe jointly form a triangular supporting structure, the included angle between the middle pipe and the upper right fork is 77 degrees, and the included angle between the middle pipe and the lower right fork is 65 degrees.

Preferably, the upper left fork and the upper right fork have the same structure, the section of the main body of the upper left fork is in an inverted L-shaped structure, an upper fork convex rib protruding outwards is arranged on the outer side of the vertical side of the inverted L-shaped structure, and the width of the transverse side is gradually reduced from one end close to the middle pipe to one end far from the middle pipe; the cross section of the main body of the left lower fork and the right lower fork is of an inverted L-shaped structure; the junction of left side upper fork with left side lower fork is arc structure and is individual layer section bar structure, the right side upper fork with right side lower fork's junction is arc structure and is individual layer section bar structure.

Preferably, the upper cross beam, the lower cross beam, the upper left fork, the lower left fork, the upper right fork and the lower right fork are all straight rod structures.

Preferably, the two lateral surfaces of the lower beam are respectively provided with a beam convex rib protruding outwards.

Preferably, a reinforcing rib group is arranged at the joint of the lower cross beam and the headstock connecting pipe, and comprises a left side plate, a middle plate and a right side plate; the left side plate and the right side plate are symmetrically arranged by the central axis of the middle plate; the lateral surface of the left side plate and the left outer surface of the lower cross beam are smoothly arranged, and the lateral surface of the right side plate and the right outer surface of the lower cross beam are smoothly arranged.

Preferably, the inner wall of the lower beam is provided with a reinforcing rib sheet, and the reinforcing rib sheet is provided with a through hole for the wire rod to pass through.

Preferably, a guide inclined plane which is convenient for the wire to enter is arranged on the side wall of one end of the wire inlet hole, which is close to the headstock connecting pipe.

Preferably, the headstock connecting pipe, the supporting beam, the upper beam, the lower beam, the middle pipe, the left rear fork frame and the right rear fork frame are of an integrated structure, and are all made of carbon fiber or aluminum alloy.

Preferably, the surfaces of the headstock connecting pipe, the supporting beam, the upper cross beam, the lower cross beam, the middle pipe, the left rear fork frame and the right rear fork frame are sprayed with protective layers; and a reflective coating is arranged on the protective layer of the upper beam and the lower beam.

Compared with the prior art, the utility model has the beneficial effects that: the bicycle frame is formed by combining the bicycle head connecting pipe, the supporting beam, the upper cross beam, the lower cross beam, the middle pipe, the left rear fork frame and the right rear fork frame, and the supporting beam is arranged at the positions of the upper cross beam, the lower cross beam and the bicycle head connecting pipe, so that the structural strength of the front end is improved. The bicycle frame reduces the use of pipes, and the upper cross beam, the left rear fork frame and the right rear fork frame adopt a light structural design, so that the overall weight of the bicycle frame is reduced. The bicycle frame is manufactured by adopting integrated forming, the bicycle frame is stronger in integrity and better in rigidity, more stable riding experience can be provided, meanwhile, the welding quantity is reduced, and the cost is saved.

Drawings

FIG. 1 is a block diagram of an integrated bicycle frame in accordance with an embodiment of the present utility model;

FIG. 2 is another angular block diagram of an integrated bicycle frame in accordance with an embodiment of the present utility model;

FIG. 3 is a bottom view of an integrated bicycle frame in accordance with an embodiment of the present utility model;

FIG. 4 is a front elevational view of an integrated bicycle frame in accordance with an embodiment of the present utility model;

FIG. 5 is a side cross-sectional view of an integrated bicycle frame in accordance with an embodiment of the present utility model;

in fig. 1 to 5, the correspondence between the names of the respective components and the reference numerals of the drawings is:

1- -head connecting pipe, 2- -support beam, 3- -upper beam, 4- -lower beam, 41- -wire inlet hole, 411- -guide slope, 42- -center support mounting hole, 43- -beam rib, 5- -center pipe, 6- -left rear fork, 61- -first hanging hole, 62- -temple mounting hole, 63- -brake mounting hole, 64- -first rear wheel mounting hole, 65- -left upper fork, 651- -vertical side, 652- -upper fork rib, 653- -lateral side, 66- -left lower fork, 7- -right rear fork, 71- -second hanging hole, 72- -transmission mounting hole, 73- -second rear wheel mounting hole, 74- -right upper fork, 75- -right lower fork, 8- -first center shaft mounting hole, 9- -second center shaft mounting hole.

Description of the embodiments

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 5, the present utility model provides an integrated bicycle frame, which comprises a bicycle head connecting pipe 1, a supporting beam 2, an upper beam 3, a lower beam 4, a middle pipe 5, a left rear fork 6 and a right rear fork 7; one end of the upper cross beam 3 and one end of the lower cross beam 4 are respectively connected with the headstock connecting pipe 1; one end of the supporting beam 2 is connected with the upper cross beam 3, the other end of the supporting beam is connected with the lower cross beam 4 and the headstock connecting pipe 1, and the supporting beam 2, the upper cross beam 3 and the headstock connecting pipe 1 jointly form a triangular supporting structure; the inside of the lower cross beam 4 is of a hollow structure, and wire inlet holes 41 are respectively arranged on two side edges; the other end of the lower cross beam 4 is provided with a middle support mounting hole 42; one side wall of the lower cross beam 4 is respectively connected with the middle pipe 5 and the left rear fork frame 6, and a first middle shaft mounting hole 8 is formed at the joint; the other side wall of the lower cross beam 4 is respectively connected with the middle pipe 5 and the right rear fork frame 7, and a second middle shaft mounting hole 9 is arranged at the joint; the joints between the left rear fork frame 6 and the right rear fork frame 7 are arc-shaped structures; the left rear fork frame 6 is provided with a first hanging hole 61, a side support mounting hole 62, a brake mounting hole 63 and a first rear wheel mounting hole 64; the right rear fork 7 is provided with a second hanging hole 71, a transmission mounting hole 72 and a second rear wheel mounting hole 73.

In the embodiment of the utility model, the upper cross beam 3 is solid and has a flat structure, and the two side surfaces are in transition through the arc-shaped surfaces, so that the upper cross beam 3 maintains good bending strength, and meanwhile, the whole transition is smooth, thereby improving the appearance texture and the comfort of use. The lower beam 4 adopts a hollow structure, and two sides of the lower beam are provided with wire inlet holes 41 so as to realize the inner wire running function of the brake wire and the speed regulating wire. The upper cross beam 3, the lower cross beam 4 are connected to the locomotive connecting pipe 1 respectively, in order to increase the overall strength of the frame, the embodiment is provided with the supporting beam 2, the two ends of the supporting beam 2 are connected with the upper cross beam 3 and the lower cross beam 4 respectively, and the supporting beam 2, the upper cross beam 3 and the locomotive connecting pipe 1 form a stable triangle structure, so that the connection strength of the front end part of the frame is improved, and the fracture problem is not easy to occur. In terms of wiring, wires are led out from the head of the vehicle, respectively inserted from the wire inlet holes 41 on both sides of the lower cross member 4, then led out from the other end of the lower cross member 4, then the speed regulating wire responsible for the speed regulating portion is led out toward the right rear fork 7, and connected to the hooks of the second hanging holes 71, and then connected to the transmission mounted in the transmission mounting holes 72. The brake cable responsible for the braking portion is also led out from the lower beam 4, passes through the hooks on the first hanging holes 61, and then is connected with the brake on the brake mounting holes 63. Through above-mentioned structural design, the wire rod only exposes at the part of inlet wire and being qualified for the next round of competitions, and the mode of walking the line in all adopts in the place of touching easily in riding, has promoted the comfort level of riding greatly, and the automobile body is also more pleasing to the eye, and the life-span of wire rod obtains promoting.

Preferably, the left rear fork frame 6 includes an upper left fork 65 and a lower left fork 66, the upper left fork 65, the lower left fork 66 and the middle tube 5 together form a triangular support structure, an included angle between the middle tube 5 and the upper left fork 65 is 77 °, and an included angle between the middle tube 5 and the lower left fork 66 is 65 °; the right rear fork frame 7 comprises an upper right fork 74 and a lower right fork 75, the upper right fork 74, the lower right fork 75 and the middle pipe 5 jointly form a triangular support structure, an included angle between the middle pipe 5 and the upper right fork 74 is 77 degrees, and an included angle between the middle pipe 5 and the lower right fork 75 is 65 degrees.

Preferably, the structure of the upper left fork 65 is the same as that of the upper right fork 74, the cross section of the main body of the upper left fork 65 is in an inverted-L structure, an upper fork convex rib 652 protruding outwards is arranged on the outer side of a vertical edge 651 of the inverted-L structure, and the width of the transverse edge 653 gradually decreases from one end close to the middle pipe 5 to one end far from the middle pipe 5; the cross section of the main body of the left lower fork 66 and the right lower fork 75 is of an inverted L-shaped structure; the connection between the upper left fork 65 and the lower left fork 66 is in an arc structure and is in a single-layer profile structure, and the connection between the upper right fork 74 and the lower right fork 75 is in an arc structure and is in a single-layer profile structure. In this embodiment, the cross sections of the main body portions of the upper left fork 65 and the upper right fork 74 are in an L-shaped structure, wherein the long side of the L-shaped structure is a side wall, the short side is a top surface, and the top surface and the side wall are in an L-shaped structure, which is helpful for improving the bending resistance. The junction of the upper left fork 65 and the upper right fork 74 is an arc-shaped inward bent U-shaped plate, and the U-shaped plate can keep the included angle between the two stable, so that the risk of bending deformation is reduced. The cross sections of the main body parts of the left and right lower forks 66 and 75 are L-shaped, and the cross sections are also designed to reduce the weight, increase the structural strength and reduce the deformation.

Preferably, the upper beam 3, the lower beam 4, the upper left fork 65, the lower left fork 66, the upper right fork 74 and the lower right fork 75 are all straight rods.

Preferably, the two sides of the lower beam 4 are respectively provided with beam ribs 43 protruding outwards. In this embodiment, the beam rib 43 is provided on the outer side surface of the lower beam 4, which enhances the bending strength in the longitudinal direction, and also increases the line of the vehicle body, thereby improving the aesthetic appearance.

Preferably, a reinforcing rib group is arranged at the joint of the lower cross beam 4 and the headstock connecting pipe 1, and the reinforcing rib group comprises a left side plate, a middle plate and a right side plate; the left side plate and the right side plate are symmetrically arranged by the central axis of the middle plate; the outer side surface of the left side plate and the left outer surface of the lower cross beam 4 are smoothly arranged, and the outer side surface of the right side plate and the right outer surface of the lower cross beam 4 are smoothly arranged. In order to promote the joint strength between locomotive connecting pipe 1 and the bottom end rail 4, this embodiment has set up the strengthening rib group in the junction between them, and wherein left side board and right side board are located the both sides, and the medium plate is located between the both sides board, and the cross-section of left side board, medium plate and right side board is triangle-shaped structure to promote the stability of supporting. The edge of strengthening rib group all carries out arc intussusception and handles, reduces sharp-pointed edge's injury to the user.

Preferably, the inner wall of the lower beam 4 is provided with a reinforcing rib sheet, and the reinforcing rib sheet is provided with a through hole for the wire rod to pass through. Through set up the strengthening rib piece in the bottom end rail 4 inside, can further promote the anti extrusion and the ability of anti deformation of bottom end rail 4, set up the through-hole in the strengthening rib piece for the wire rod to pass through.

Preferably, a guiding inclined surface 411 for facilitating the wire to enter is arranged on the side wall of the wire inlet hole 41 near one end of the headstock connecting pipe 1. Through the above-mentioned structural design, the wire rod can get into the bottom end rail 4 along the direction inclined plane 411 with the mode of laminating the automobile body more, reduces the buckling of wire rod, promotes the feel of brake and speed governing to and promote automobile body aesthetic measure.

Preferably, the headstock connecting pipe 1, the supporting beam 2, the upper beam 3, the lower beam 4, the middle pipe 5, the left rear fork frame 6 and the right rear fork frame 7 are integrally formed, and are all made of carbon fiber or aluminum alloy. Compared with the traditional welding frame, the frame in the embodiment is of an integrally formed frame structure, and the appearance of the frame is more concise and attractive. In the aspect of production, the welding quantity of the integrally formed frame is greatly reduced, a plurality of welding processing processes are saved, and the production cost is reduced and the cost is saved for enterprises. The integrated into one piece frame adopts disposable shaping technology, and the frame wholeness is stronger, and the rigidity is better, can provide more stable riding experience. In addition, the integrated into one piece frame adopts high strength carbon fiber or aluminum alloy material to make, compares traditional frame lighter weight, helps improving speed and the flexibility of bicycle, also makes things convenient for the transport of vehicle.

Preferably, the surfaces of the headstock connecting pipe 1, the supporting beam 2, the upper cross beam 3, the lower cross beam 4, the middle pipe 5, the left rear fork frame 6 and the right rear fork frame 7 are sprayed with protective layers; and reflective coatings are arranged on the protective layers of the upper cross beam 3 and the lower cross beam 4. In the embodiment, the protective layer is arranged on the surface of the bicycle frame, which is beneficial to reducing the corrosion of the environment to the frame and prolonging the service life of the frame. In addition, a layer of reflective coating is arranged on the protective layer, so that the reflective effect can be achieved at night, and the safety is improved.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. An integrated bicycle frame is characterized by comprising a bicycle head connecting pipe (1), a supporting beam (2), an upper cross beam (3), a lower cross beam (4), a middle pipe (5), a left rear fork frame (6) and a right rear fork frame (7); one end of the upper cross beam and one end of the lower cross beam are respectively connected with the headstock connecting pipe; one end of the supporting beam is connected with the upper beam, the other end of the supporting beam is connected with the lower beam and the head connecting pipe, and the supporting beam, the upper beam and the head connecting pipe jointly form a triangular supporting structure; the inside of the lower cross beam is of a hollow structure, and wire inlet holes (41) are respectively arranged on two side edges; the other end of the lower cross beam is provided with a middle support mounting hole (42); one side wall of the lower cross beam is respectively connected with the middle pipe and the left rear fork frame, and a first middle shaft mounting hole (8) is formed at the joint; the other side wall of the lower cross beam is respectively connected with the middle pipe and the right rear fork frame, and a second middle shaft mounting hole (9) is arranged at the joint; the joints between the left rear fork frame and the right rear fork frame are arc-shaped structures; the left rear fork frame is provided with a first hanging hole (61), a side support mounting hole (62), a brake mounting hole (63) and a first rear wheel mounting hole (64); the right rear fork frame is provided with a second hanging hole (71), a transmission mounting hole (72) and a second rear wheel mounting hole (73).

2. The integrated bicycle frame according to claim 1, wherein the left rear fork comprises an upper left fork (65) and a lower left fork (66), the upper left fork, the lower left fork and the middle tube together form a triangular support structure, the included angle between the middle tube and the upper left fork is 77 °, and the included angle between the middle tube and the lower left fork is 65 °; the right rear fork frame comprises an upper right fork (74) and a lower right fork (75), the upper right fork, the lower right fork and the middle pipe jointly form a triangular support structure, the included angle between the middle pipe and the upper right fork is 77 degrees, and the included angle between the middle pipe and the lower right fork is 65 degrees.

3. The integrated bicycle frame according to claim 2, wherein the upper left fork and the upper right fork have the same structure, the cross section of the main body of the upper left fork is in an inverted-L-shaped structure, an upper fork convex rib (652) protruding outwards is arranged on the outer side of a vertical edge (651) of the inverted-L-shaped structure, and the width of a transverse edge (653) is gradually reduced from one end close to the middle pipe to one end far from the middle pipe; the cross section of the main body of the left lower fork and the right lower fork is of an inverted L-shaped structure; the junction of left side upper fork with left side lower fork is arc structure and is individual layer section bar structure, the right side upper fork with right side lower fork's junction is arc structure and is individual layer section bar structure.

4. The integrated bicycle rack of claim 2, wherein the upper cross member, the lower cross member, the upper left fork, the lower left fork, the upper right fork, and the lower right fork are all straight bar structures.

5. The integrated bicycle frame according to claim 1, wherein the lower cross member is provided with outwardly protruding cross member ribs (43) on both sides thereof.

6. The integrated bicycle frame according to claim 1, wherein a reinforcing rib group is arranged at the joint of the lower cross beam and the bicycle head connecting pipe, and the reinforcing rib group comprises a left side plate, a middle plate and a right side plate; the left side plate and the right side plate are symmetrically arranged by the central axis of the middle plate; the lateral surface of the left side plate and the left outer surface of the lower cross beam are smoothly arranged, and the lateral surface of the right side plate and the right outer surface of the lower cross beam are smoothly arranged.

7. The integrated bicycle rack of claim 6, wherein the inner wall of the lower cross beam is provided with a reinforcing rib sheet, and the reinforcing rib sheet is provided with a through hole for a wire rod to pass through.

8. The integrated bicycle frame according to claim 1, wherein a guiding inclined surface (411) for facilitating the wire to enter is arranged on the side wall of the wire inlet hole near one end of the bicycle head connecting pipe.

9. The integrated bicycle frame according to claim 1, wherein the bicycle head connecting pipe, the supporting beam, the upper cross beam, the lower cross beam, the middle pipe, the left rear fork and the right rear fork are integrally formed, and are made of carbon fiber or aluminum alloy.

10. The integrated bicycle frame according to any one of claims 1 to 9, wherein surfaces of the head connecting pipe, the support beam, the upper cross beam, the lower cross beam, the middle pipe, the left rear fork and the right rear fork are sprayed with a protective layer; and a reflective coating is arranged on the protective layer of the upper beam and the lower beam.