CN110341863B

CN110341863B - Bicycle frame

Info

Publication number: CN110341863B
Application number: CN201910636437.7A
Authority: CN
Inventors: 王世来; 黄添彪
Original assignee: Zhejiang Ocean University ZJOU
Current assignee: Zhejiang Ocean University ZJOU
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-08-18
Anticipated expiration: 2039-07-15
Also published as: CN110341863A

Abstract

The invention discloses a bicycle frame, which comprises a front tripod consisting of a first main pipe, a transverse pipe and a supporting pipe, and a rear tripod consisting of a second main pipe and a rear wheel mounting frame, wherein the first main pipe is provided with a connecting sleeve, the connecting sleeve is provided with a slot, the opening of the slot faces downwards, and the second main pipe is provided with a plug-in connector matched with the slot. The bicycle frame adopts a detachable structure, can be detached and folded when being transported and carried, is convenient to be arranged in a vehicle, and is convenient to transport and carry.

Description

Bicycle frame

Technical Field

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

Background

With the improvement of living standard, more and more people choose self-driving tour. At present, many people choose to carry a bicycle on the automobile during self-driving tour, the bicycle is flexible and convenient, and riders can reach places where the automobile is not convenient to reach, so that the travel pleasure is improved. However, the existing bicycle frame is large in size, inconvenient to put into an automobile and inconvenient to carry.

Such as: chinese patent publication No. CN103387031B, entitled bicycle frame, includes a front triangle part and a rear triangle part. The front triangle part comprises the following tubular components in sequence: a seat tube; feeding a pipe; a lower pipe; and a steering tube. The rear triangle comprises in sequence the following tubular components: two inclined rear upper forks, and two horizontal rear lower forks. The frame is characterized in that each member included in the front triangle is manufactured as a single member, and two under-stays are coupled to the front triangle by bushings inserted into seats provided corresponding to the bottom bracket shafts. The bicycle frame has the following defects that: the bicycle frame is large in size, cannot be placed in an automobile and is inconvenient to carry.

Disclosure of Invention

The invention aims to solve the problems that the existing bicycle frame cannot be placed in an automobile due to large volume and is inconvenient to carry, and provides a bicycle frame which can effectively solve the problems.

The purpose of the invention is realized by the following technical scheme: the utility model provides a bicycle frame, includes by the first tripod that is responsible for, violently manages and the stay tube is constituteed, by the second tripod of being responsible for, rear wheel mounting bracket is constituteed, be provided with the connecting sleeve on the first person in charge, be provided with the slot on the connecting sleeve, the opening of slot is down, be provided with the bayonet joint with slot matched with on the second person in charge.

In the invention, the front wheel of the bicycle is arranged on the front tripod, and the rear wheel of the bicycle is arranged on the rear tripod. When the bicycle frame is used, the plug connector on the rear tripod is inserted into the connecting sleeve on the front tripod, so that the front tripod and the rear tripod are connected into a complete bicycle frame; when the bicycle needs to be transported and carried, the rear tripod and the front tripod are detached, so that the size of the bicycle frame can be reduced, the bicycle frame is convenient to load into a car, and the bicycle frame is convenient to carry. The bicycle frame adopts a detachable structure, so that the bicycle frame is convenient to transport and carry.

Preferably, the first main pipe, the transverse pipe, the supporting pipe, the second main pipe and the rear wheel mounting rack are all made of aluminum alloy. The aluminum alloy has light weight and high strength.

Preferably, a head pipe is arranged at the front end of the front tripod. The head tube is used for installing a front fork of the bicycle.

Preferably, the rear wheel mounting bracket is provided with a rear wheel mounting groove for mounting a rear wheel of the bicycle.

Preferably, the connection sleeves are respectively disposed at both sides of the first main pipe.

Preferably, the connecting sleeve is provided with an inclined block groove, an inclined block, a first piston cylinder and a second piston cylinder, the inclined block groove is formed in the side wall of the inserting groove, a first guide inclined plane is formed in the inclined block groove, the inclined block is arranged in the inclined block groove, a second guide inclined plane parallel to the first guide inclined plane is formed in the inclined block, and the second guide inclined plane abuts against the first guide inclined plane; a first piston is arranged in the first piston cylinder, a first piston rod is arranged on the first piston, the front end of the first piston rod is abutted against the upper end of the plug connector, and hydraulic oil is arranged in the first piston cylinder; the second piston cylinder is arranged at the lower end of the sloping block groove, a second piston is arranged in the second piston cylinder, a second piston rod is arranged on the second piston, the front end of the second piston rod is abutted against the lower end of the sloping block, hydraulic oil is arranged in the second piston cylinder, and the first piston cylinder is communicated with the second piston cylinder through an oil pipe. The bayonet joint inserts in the slot, when riding, first person in charge is down pushing down under the effect of riding passerby's body weight, the upper end of bayonet joint can push up first piston rod upwards, first piston passes through oil pipe with the hydraulic oil in the first piston cylinder and impresses in the second piston cylinder, hydraulic oil in the second piston cylinder promotes the second piston rod ejecting forward, thereby promote the sloping block and remove, the sloping block compresses tightly the side of bayonet joint under the effect on first direction inclined plane and second direction inclined plane, eliminate the clearance between bayonet joint and the slot, make difficult production between preceding tripod and the back tripod rock, improve the steadiness of being connected between preceding tripod and the back tripod.

Preferably, the cross sections of the sloping block groove and the sloping block are both triangular.

Preferably, the plug connector is L-shaped, the plug connector comprises a connecting section and an inserting section, and two ends of the connecting section are respectively connected with one end of the second main pipe and one end of the inserting section.

The invention has the beneficial effects that: the bicycle frame adopts a detachable structure, can be detached and folded when being transported and carried, is convenient to be arranged in a vehicle, and is convenient to transport and carry.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the rear tripod.

Fig. 3 is a sectional view taken along a-a in fig. 1.

Fig. 4 is an enlarged view of a portion a of fig. 3.

In the figure: 1. The first person in charge, 2, violently the pipe, 3, stay tube, 4, car head pipe, 5, connecting sleeve, 6, the second person in charge, 7, rear wheel mounting bracket, 8, bayonet joint, 9, rear wheel mounting groove, 10, slot, 11, first piston cylinder, 12, first piston, 13, first piston rod, 14, second piston cylinder, 15, second piston, 16, second piston rod, 17, oil pipe, 18, sloping block groove, 19, sloping block.

Detailed Description

The invention is further described by the following detailed description in conjunction with the accompanying drawings.

Example (b):

as shown in fig. 1 to 4, a bicycle frame includes a front tripod and a rear tripod. The front tripod comprises a first main pipe 1, a transverse pipe 2 and a supporting pipe 3. The first main pipe 1, the transverse pipe 2 and the support pipe 3 form a triangular structure. The front end of the front tripod is provided with a head pipe 4. The head tube 4 is used for mounting a front fork of the bicycle. The rear tripod comprises a second main pipe 6 and a rear wheel mounting bracket 7. The second main pipe 6 and the rear wheel mounting rack 7 form a triangular structure. And a rear wheel mounting groove 9 is formed in the rear wheel mounting frame 7. The rear wheel mounting groove 9 is used for mounting a rear wheel of a bicycle. The first main pipe 1, the transverse pipe 2, the supporting pipe 3, the second main pipe 6 and the rear wheel mounting rack 7 are all made of aluminum alloy. The first main pipe 1 is provided with a connecting sleeve 5. The number of the connecting sleeves 5 is four. The connecting sleeves 5 are respectively arranged on two sides of the first main pipe 1. The connecting sleeve 5 is provided with a slot 10. The opening of the slot 10 faces downwards. The cross section of the slot 10 is rectangular. The second main pipe 6 is provided with a plug-in connector 8 matched with the connecting sleeve 5. The plug 8 is L-shaped. The plug-in connector 8 comprises a connecting section and an insertion section. The connecting section and the insertion section are perpendicular to each other. The cross section of the insertion section is rectangular. And two ends of the connecting section are respectively connected with the second main pipe 6 and one end of the inserting section. When the plug-in connector 8 is connected to the connecting sleeve 5, the insertion section is inserted into the insertion slot 10.

The connecting sleeve 5 is provided with a sloping block groove 18, a sloping block 19, a first piston cylinder 11 and a second piston cylinder 14. The cross sections of the sloping block groove 18 and the sloping block 19 are both triangular. The swash block groove 18 is provided on a side wall of the socket 10. The sloping block groove 18 is provided with a first guide sloping surface. The swash block 19 is disposed in the swash block groove 18. The inclined block 19 is provided with a second guide inclined surface parallel to the first guide inclined surface. The second guide slope abuts against the first guide slope. A first piston 12 is arranged in the first piston cylinder 11. The first piston 12 is provided with a first piston rod 13. The front end of the first piston rod 13 is abutted against the upper end of the plug-in connector 8. And hydraulic oil is arranged in the first piston cylinder 11. The second piston cylinder 14 is arranged at the lower end of the sloping block groove 18, and a second piston 15 is arranged in the second piston cylinder 14. A second piston rod 16 is arranged on the second piston 15. The front end of the second piston rod 16 abuts against the lower end of the swash block 19. And hydraulic oil is arranged in the second piston cylinder 14. The first piston cylinder 11 is communicated with the second piston cylinder 14 through an oil pipe 17. Ride the passerby when riding, first person in charge is down pushing down under the effect of the passerby's of riding weight, the upper end of bayonet joint can push up first piston rod, first piston passes through oil pipe with the hydraulic oil in the first piston cylinder and impresses in the second piston cylinder, hydraulic oil in the second piston cylinder promotes the second piston rod ejecting forward, thereby promote the sloping block and remove, the sloping block compresses tightly the side of bayonet joint under the effect on first direction inclined plane and second direction inclined plane, eliminate the clearance between bayonet joint and the slot, make difficult production between preceding tripod and the back tripod rock, improve the steadiness of being connected between preceding tripod and the back tripod.

When the invention is used, the plug connector on the rear tripod is inserted into the connecting sleeve on the front tripod, so that the front tripod and the rear tripod are connected into a complete frame; when the bicycle needs to be transported and carried, the rear tripod and the front tripod are detached, so that the size of the bicycle frame can be reduced, the bicycle frame is convenient to load into a car, and the bicycle frame is convenient to carry. The bicycle frame adopts a detachable structure, so that the bicycle frame is convenient to transport and carry.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A bicycle frame, characterized in that: the rear tripod comprises a front tripod consisting of a first main pipe (1), a transverse pipe (2) and a supporting pipe (3), and a rear tripod consisting of a second main pipe (6) and a rear wheel mounting rack (7), wherein the first main pipe (1) is provided with a connecting sleeve (5), the connecting sleeve (5) is provided with a slot (10), the slot (10) is provided with a downward opening, and the second main pipe (6) is provided with a plug-in connector (8) matched with the slot (10); the connecting sleeve (5) is provided with a sloping block groove (18), a sloping block (19), a first piston cylinder (11) and a second piston cylinder (14), the sloping block groove (18) is arranged on the side wall of the inserting groove (10), the sloping block groove (18) is provided with a first guide inclined plane, the sloping block (19) is arranged in the sloping block groove (18), the sloping block (19) is provided with a second guide inclined plane parallel to the first guide inclined plane, and the second guide inclined plane abuts against the first guide inclined plane; a first piston (12) is arranged in the first piston cylinder (11), a first piston rod (13) is arranged on the first piston (12), the front end of the first piston rod (13) is abutted against the upper end of the plug-in connector (8), and hydraulic oil is arranged in the first piston cylinder (11); the second piston cylinder (14) is arranged at the lower end of the inclined block groove (18), a second piston (15) is arranged in the second piston cylinder (14), a second piston rod (16) is arranged on the second piston (15), the front end of the second piston rod (16) is abutted to the lower end of the inclined block (19), hydraulic oil is arranged in the second piston cylinder (14), and the first piston cylinder (11) is communicated with the second piston cylinder (14) through an oil pipe (17).

2. Bicycle frame according to claim 1, characterised in that the first main tube (1), the cross tube (2), the support tube (3), the second main tube (6) and the rear wheel mounting (7) are made of aluminium alloy.

3. A bicycle frame according to claim 1, characterised in that the front end of the front tripod is provided with a head tube (4).

4. A bicycle frame according to claim 1, characterised in that the rear wheel mounting bracket (7) is provided with a rear wheel mounting slot (9) for mounting a rear wheel of a bicycle.

5. A bicycle frame according to claim 1, characterised in that the connecting sleeve (5) is arranged on each side of the first main tube (1).

6. A bicycle frame according to claim 1, characterised in that the cross-sections of the swash block grooves (18) and swash blocks (19) are both triangular.

7. A bicycle frame according to claim 1, characterised in that the plug (8) is "L" shaped, the plug (8) comprising a connecting section and an insertion section, the two ends of the connecting section being connected to the second main tube (6) and one end of the insertion section, respectively.