Folding bicycle

Abstract

The utility model discloses a folding bicycle, which comprises a bicycle main frame, a front fork part, a front wheel, a rear fork part and a rear wheel, the front wheel is rotatably fixed on the front fork part, the rear wheel is rotatably fixed on the rear fork part, and the bicycle main frame comprises a control bicycle frame, a handlebar, a front half bicycle frame and a rear half bicycle frame, a first buckling mechanism is arranged between the control frame and the front fork portion, a second buckling mechanism is arranged between the front half frame and the rear half frame, the first buckling mechanism enables the control frame and the front fork portion to be foldable so that the handlebar and the front wheel can be close to each other, and the second buckling mechanism enables the front half frame and the rear half frame to be foldable so that the front wheel and the rear wheel can be close to each other. The bicycle further comprises a wheel buckling mechanism, the wheel buckling mechanism comprises a buckling piece installed on the front fork part and a fixing base installed on the rear fork part, a clamping groove matched with the buckling piece is formed in the fixing base, and the buckling piece is installed in the clamping groove to be clamped in a matched mode. The folding bicycle disclosed by the utility model is simple in folding operation and stable and reliable after being folded.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, and specifically to a folding bicycle. Background Art

[0002] A folding bicycle belongs to a classification of bicycles. Generally, a folding bicycle is composed of a frame folding joint and a standpipe folding joint. By folding the frame, the front and rear wheels are folded together. Due to its advantages such as convenient riding, reducing the overall volume of the vehicle through the folding principle, and being easy to carry and transport, it is more and more popular and widely used. Currently, various structural types of folding bicycles have emerged on the market, meeting the requirements of light weight, small volume, and convenient operation to a certain extent. To achieve the goal of a small folding volume, it is usually necessary to fold and retract parts such as the handlebar, front wheel, and rear wheel of the bicycle.

[0003] The folding bicycle described in Chinese Patent CN03810675.2 includes a frame having an upper tube, a front tube, a lower tube, and a seat tube; a foldable front wheel assembly having a front fork rotatably connected to the frame and a front wheel mounted on the front fork; and a rear wheel assembly having a chain support and a rear wheel mounted on the chain support. Among them, the lower tube is composed of two lower tubes having a gap therebetween; the front wheel assembly can be folded by rotating the front fork 180° and folding it towards the lower tube, so that the front wheel is partially inserted into the gap. However, this folding mechanism is relatively complex, the folding operation steps are rather cumbersome, and the volume of the vehicle body after folding is relatively large. If the vehicle bodies do not fit closely, the frame is likely to come apart during transportation, resulting in problems such as bumps, and there are relatively large safety hazards. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a folding bicycle with simple folding operation, a relatively small volume in the folded state, and overall stability and reliability.

[0005] The technical solution adopted by the folding bicycle disclosed by the utility model is:

[0006] A folding bicycle, comprising a main frame, a front fork part and a front wheel rotatably fixed to the front fork part, a rear fork part and a rear wheel rotatably fixed to the rear fork part. The main frame includes a control frame, a handlebar mounted on the control frame, a front half frame and a rear half frame. A first fastening mechanism is provided between the control frame and the front fork part, and a second fastening mechanism is provided between the front half frame and the rear half frame. The first fastening mechanism enables the control frame and the front fork part to be folded so that the handlebar and the front wheel can approach each other. The second fastening mechanism enables the front half frame and the rear half frame to be folded so that the front wheel and the rear wheel can approach each other. It further includes a wheel fastening mechanism, which includes a fastening member mounted on the front fork part and a fixed seat mounted on the rear fork part. The fixed seat is provided with a clamping groove matching the fastening member, and the fastening member is installed in the clamping groove for clamping cooperation.

[0007] As a preferred solution, the fastening member includes a mounting block and a clamping pin. One end of the mounting block is fixed to the front fork part. The top of the clamping pin is provided with a circular ring platform. The diameter of the clamping pin is the same as the diameter of the clamping groove. The outer diameter of the circular ring platform is larger than the diameter of the clamping groove, and the circular ring platform is clamped at the outer end of the clamping groove.

[0008] As a preferred solution, the first fastening mechanism includes a first locking block, a second locking block, a U-shaped clamping block and an adjusting locking member. The first locking block is fixedly connected to the control frame, and the second locking block is fixedly connected to the front fork part. One end of the first locking block is hinged to one end of the second locking block. An installation hole is provided between the first locking block and the second locking block. The side of the U-shaped clamping block is provided with a through hole, and the adjusting locking member is arranged in the installation hole through the through hole.

[0009] As a preferred solution, the second fastening mechanism includes a first connecting seat, a second connecting seat, a U-shaped clamping block and an adjusting locking member. The first connecting seat is fixedly connected to the front half frame, and the second connecting seat is fixedly connected to the rear half frame. One end of the first connecting seat is hinged to one end of the second connecting seat. An installation hole is provided between the first connecting seat and the second connecting seat. The side of the U-shaped clamping block is provided with a through hole, and the adjusting locking member is arranged in the installation hole through the through hole.

[0010] As a preferred solution, the main frame further includes a vertical pipe. One end of the vertical pipe is fixedly connected to the rear half frame, and one end of the vertical pipe is connected with a connecting rod, and the connecting rod is hinged to one end of the rear fork part.

[0011] As a preferred solution, a rear seat is fixed to the top of the rear fork portion. The rear seat includes a load-bearing beam, and sliding wheels are movably connected to four ends of the load-bearing beam. When the bicycle is in a folded state, the sliding wheels are in contact with the ground.

[0012] As a preferred solution, a seat support rod is movably connected to the vertical pipe. A locking seat tube clamp is sleeved on the upper end of the vertical pipe, and the seat support rod is installed into the vertical pipe and fixed by the locking seat tube clamp.

[0013] As a preferred solution, the locking seat tube clamp includes a clamping ring, a quick-release handle, a screw rod, and a nut. The clamping ring is sleeved on the vertical pipe. One end of the screw rod passes through the clamping ring and is connected to the nut, and the other end of the screw rod is connected to the quick-release handle.

[0014] As a preferred solution, strip-shaped openings are provided on the surface of the vertical pipe.

[0015] As a preferred solution, quick-release rods are connected to both the front fork portion and the rear fork portion. The front wheel is movably installed on the front fork portion through the quick-release rod, and the rear wheel is movably installed on the rear fork portion through the quick-release rod. A quick-release head is provided at one end of the quick-release rod.

[0016] The beneficial effects of the folding bicycle disclosed by the present utility model are as follows: Through the combined use of the first fastening mechanism and the second fastening mechanism, it is convenient and fast to realize that the front wheel, rear wheel, and handlebar rotate and fit to the main frame of the vehicle when the vehicle is folded, with high reliability. Then, through the wheel fastening mechanism, the fastening part of the front fork portion can be clamped to the mounting seat of the rear fork portion, enabling the front wheel and the rear wheel to be closely attached and clamped together, so that the occupied area in the folded state is small, easy to store and carry, and the overall body of the folded bicycle is stable and reliable, not easy to fall apart, thus improving the safety and vehicle protection performance; the rear seat on the rear fork portion is provided with sliding wheels, which can be pushed through the sliding wheels in the folded state, with stronger functionality and more convenient and fast use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the folding bicycle of the present utility model.

[0018] Figure 2 is a schematic structural diagram of the folding bicycle of the present utility model from another perspective.

[0019] Figure 3 is an exploded schematic structural diagram of the folding state of the folding bicycle of the present utility model.

[0020] Figure 4 is a schematic structural diagram of the wheel fastening mechanism in the folding bicycle of the present utility model.

[0021] Figure 5It is a schematic structural diagram of a quick-release rod in the folding bicycle of the present utility model. Specific embodiments

[0022] The present utility model will be further described and explained below in conjunction with specific embodiments and the accompanying drawings of the specification:

[0023] Reference Figures 1 to 4 , a folding bicycle, including a main frame 10 of the vehicle, a front fork portion 20, a front wheel 30 rotatably fixed to the front fork portion 20, a rear fork portion 40, and a rear wheel 50 rotatably fixed to the rear fork portion 40. The main frame 10 of the vehicle includes a control frame 11, a handlebar 12 mounted on the control frame 11, a front half frame 13, and a rear half frame 14. A first fastening mechanism 15 is provided between the control frame 11 and the front fork portion 20, and a second fastening mechanism 16 is provided between the front half frame 13 and the rear half frame 14. The first fastening mechanism 15 enables the control frame 11 and the front fork portion 20 to be folded so that the handlebar 12 and the front wheel 30 can approach each other. The second fastening mechanism 16 enables the front half frame 13 and the rear half frame 14 to be folded so that the front wheel 30 and the rear wheel 50 approach each other. It further includes a wheel fastening mechanism 17, and the wheel fastening mechanism 17 includes a fastening member 171 mounted on the front fork portion 20 and a fixing seat 172 mounted on the rear fork portion 40. A clamping groove 176 matching the fastening member 171 is provided on the fixing seat 172, and the fastening member 171 is mounted in the clamping groove 176 for cooperative clamping.

[0024] Through the combined use of the first fastening mechanism 15, the second fastening mechanism 16, and the wheel fastening mechanism 17, the folding or normal use of the bicycle can be conveniently and quickly realized. When a folding operation is required, the rear fork portion 40 and the main frame 10 of the vehicle are fixed by a fastening member. First, the fastening member is opened to enable the rear wheel 50 to rotate independently and move away from the ground. Through the first fastening mechanism 15 and the second fastening mechanism 16, the handlebar 12 frame and the front wheel 30 approach each other. The fastening member 171 of the front fork portion 20 can be clamped to the mounting seat of the rear fork portion 40, so that the occupied area in the folded state is relatively small, which is easy to store and carry. After folding, the overall body of the vehicle is stable and reliable, not easy to fall apart, and the safety and vehicle protection performance are improved.

[0025] Among them, when there is only one fastening mechanism provided between the front half frame 13 and the rear half frame 14 for folding itself, only the clamping groove 176 of the mounting seat needs to be installed downward on the rear fork portion 40. After folding, the fastening member 171 can also be cooperatively clamped to the clamping groove 176, and the front wheel 30 and the rear wheel 50 are attached together. This structure has a wide range of applications and can be installed on various folding bicycles.

[0026] The fastening member 171 includes a mounting block 173 and a clamping pin 174. One end of the mounting block 173 is fixed to the front fork portion 20. The top of the clamping pin 174 is provided with a circular ring platform 175. The diameter of the clamping pin 174 is the same as that of the clamping groove 176. The outer diameter of the circular ring platform 175 is larger than the diameter of the clamping groove 176. The circular ring platform 175 is clamped at the outer end of the clamping groove 176.

[0027] Among them, the fastening member 171 includes a mounting block 173 and a clamping pin 174. The mounting block 173 is fixedly installed at the bottom of the front fork portion 20, and the clamping pin 174 is bolt-connected and installed on the mounting block 173. When the clamping pin 174 is used for too long, it can be replaced by twisting the bolt, which is convenient to operate. The top of the clamping pin 174 is provided with a circular ring platform 175. When the clamping pin 174 is clamped into the clamping groove 176, the circular ring platform 175 plays a certain fixing role to prevent the clamping pin 174 from sliding left and right and avoid slipping out under force, playing a certain protective role; the opening of the clamping groove 176 is provided with a fillet, which can make the clamping of the clamping member smoother and more labor-saving.

[0028] Reference Figure 3 As shown in the figure, the first fastening mechanism 15 includes a first locking block 151, a second locking block 152, a U-shaped clamping block 153 and an adjusting locking member 154. The first locking block 151 is fixedly connected to the control frame 11, and the second locking block 152 is fixedly connected to the front fork portion 20. One end of the first locking block 151 is hinged to one end of the second locking block 152. An installation hole 155 is provided between the first locking block 151 and the second locking block 152. The side of the U-shaped clamping block 153 is provided with a through hole 156, and the adjusting locking member 154 is arranged in the installation hole 155 through the through hole 156.

[0029] The second fastening mechanism 16 includes a first connecting seat 161, a second connecting seat 162, a U-shaped clamping block 153 and an adjusting locking member 154. The first connecting seat 161 is fixedly connected to the front half frame 13, and the second connecting seat 162 is fixedly connected to the rear half frame 14. One end of the first connecting seat 161 is hinged to one end of the second connecting seat 162. An installation hole 155 is provided between the first connecting seat 161 and the second connecting seat 162. The side of the U-shaped clamping block 153 is provided with a through hole 156, and the adjusting locking member 154 is arranged in the installation hole 155 through the through hole 156.

[0030] When the folding bicycle is in the folding operation, first rotate the adjusting locking members 154 on the first fastening mechanism 15 and the second fastening mechanism 16. When the adjusting locking member 154 is screwed out, the U-shaped clamping block 153 can be loosened, and the first locking block 151 and the second locking block 152 rotate and open, and the first connecting seat 161 and the second connecting seat 162 rotate and open. It can conveniently and quickly realize that when the vehicle is folded, the front wheel 30, the rear wheel 50 and the handlebar 12 rotate and fit to the main frame 10 of the vehicle, and the connection of the vehicle body is stable and the reliability is high. When the above folding bicycle needs to be used for normal riding, just twist the adjusting locking member 154 to make the U-shaped clamping block 153 press and fix, which saves time and effort.

[0031] The main frame 10 of the vehicle further includes a riser 60. One end of the riser 60 is fixedly connected to the rear half frame 14. One end of the riser 60 is connected with a connecting rod 61, and the connecting rod 61 is hinged to one end of the rear fork portion 40. The connecting rod 61 is hinged to the rear fork portion 40. When the folding operation needs to be performed, the rear fork portion 40 and the main frame 10 of the vehicle are fixed by a fastening member. First, open the fastening member to allow the rear wheel 50 to rotate independently and away from the ground, which is convenient for operation.

[0032] The riser 60 is movably connected with a seat support rod 70. A locking seat pipe clamp 71 is sleeved on the upper end of the riser 60. The seat support rod 70 is installed in the riser 60 and fixed by the locking seat pipe clamp 71. The locking seat pipe clamp 71 includes a clamping ring 711, a quick-release handle 712, a screw 713 and a nut 714. The clamping ring 711 is sleeved on the riser 60. One end of the screw 713 passes through the clamping ring 711 and is connected with the nut 714, and the other end of the screw 713 is connected with the quick-release handle 712. A strip-shaped opening is provided on the surface of the riser 60.

[0033] Among them, the seat support rod 70 is movably installed on the riser 60 and the height is adjusted by the locking seat pipe clamp 71. When the seat height needs to be adjusted, just open the quick-release handle 712 and twist the screw 713 to make the seat support rod 70 extend and adjust the height in the riser 60. Finally, close the quick-release handle 712, and the seat support rod 70 is firmly installed in the riser 60 and is not easy to loosen. The operation is simple and convenient. Moreover, a strip-shaped opening is provided on the surface of the riser 60, and the depth of the seat support rod 70 inserted into the hole can be directly observed to judge whether it is firmly installed.

[0034] A rear seat 80 is fixed at the top of the rear fork portion 40. The rear seat 80 includes a load-bearing beam 81. Four ends of the load-bearing beam 81 are movably connected with sliding wheels 82. When the bicycle is in a folded state, the sliding wheels 82 are in contact with the ground.

[0035] When the foldable bicycle is to be folded, the rear wheel 50 is first rotated so that the rear wheel 50 is turned upside down, and the sliding wheel 82 can directly contact the ground and stand upright on the ground stably. The load-bearing beam 81 can play a supporting role and can share the overall weight of the foldable bicycle together with the sliding wheel 82, so that the overall structure is stable. In the folded state, the body of the bicycle can be pushed and transported, and the functionality is rich.

[0036] refer to Figure 5 The front fork 20 and the rear fork 40 are both connected to a quick release rod 90, the front wheel 30 is movably mounted on the front fork 20 through the quick release rod 90, the rear wheel 50 is movably mounted on the rear fork 40 through the quick release rod 90, and a quick release head 91 is provided at one end of the quick release rod 90.

[0037] The front wheel 30 and the rear wheel 50 of the folding bicycle are assembled and installed by the quick release rod 90. When replacing or removing the front wheel 30 or the rear wheel 50, the front wheel 30 or the rear wheel 50 can be easily and directly removed by simply moving the quick release head 91 on the quick release rod 90 and the spring inside the quick release rod 90 is opened. The overall structure is simple and easy to operate.

[0038] The foldable bicycle disclosed in the utility model can realize the front wheel, the rear wheel and the handlebar to be rotated and fitted to the main frame of the vehicle conveniently and quickly through the coordinated use of the first buckling mechanism and the second buckling mechanism when the vehicle is folded, and the reliability is high. Then, through the wheel buckling mechanism, the buckling piece of the front fork part can be snapped onto the mounting seat of the rear fork part, so that the front wheel and the rear wheel can be tightly fitted and buckled together, so that the occupied area is small in the folded state, and it is easy to store and carry. After folding, the whole body of the bicycle is stable and reliable and is not easy to fall apart, so that the safety and vehicle protection performance are improved; the rear seat on the rear fork part is provided with a sliding wheel, which can be pushed by the sliding wheel in the folded state, so that the functionality is stronger and the use is more convenient and quick.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A folding bicycle, comprising a main frame, a front fork and a front wheel rotatably fixed to the front fork, a rear fork and a rear wheel rotatably fixed to the rear fork, the main frame comprising a control frame and a handlebar mounted on the control frame, a front half frame and a rear half frame, a first buckling mechanism being provided between the control frame and the front fork, a second buckling mechanism being provided between the front half frame and the rear half frame, the first buckling mechanism enabling the control frame and the front fork to be folded so that the handlebar and the front wheel can be brought close to each other, the second buckling mechanism enabling the front half frame and the rear half frame to be folded so that the front wheel and the rear wheel can be brought close to each other, characterized in that: It also includes a wheel locking mechanism, which includes a locking piece installed on the front fork and a fixing seat installed on the rear fork. The fixing seat is provided with a snap-in groove matching the locking piece, and the locking piece is installed in the snap-in groove for locking.

2. The folding bicycle according to claim 1, characterized in that: The fastener includes a mounting block and a snap-in pin, one end of the mounting block is fixed on the front fork portion, a circular ring platform is provided on the top of the snap-in pin, the diameter of the snap-in pin is consistent with the diameter of the snap-in groove, the outer diameter of the circular ring platform is larger than the diameter of the snap-in groove, and the circular ring platform is snap-connected to the outer end of the snap-in groove.

3. The folding bicycle according to claim 1, characterized in that: The first locking mechanism includes a first locking block, a second locking block, a U-shaped clamping block and an adjusting locking piece, the first locking block is fixedly connected to the control frame, the second locking block is fixedly connected to the front fork portion, one end of the first locking block and one end of the second locking block are hingedly connected, a mounting hole is provided between the first locking block and the second locking block, a through hole is provided on the side of the U-shaped clamping block, and the adjusting locking piece passes through the through hole and is arranged in the mounting hole.

4. The folding bicycle according to claim 1, characterized in that: The second buckling mechanism includes a first connecting seat, a second connecting seat, a U-shaped block and an adjusting locking piece. The first connecting seat is fixedly connected to the front half frame, the second connecting seat is fixedly connected to the rear half frame, one end of the first connecting seat and one end of the second connecting seat are hingedly connected, a mounting hole is provided between the first connecting seat and the second connecting seat, a through hole is provided on the side of the U-shaped block, and the adjusting locking piece passes through the through hole and is arranged in the mounting hole.

5. The folding bicycle according to claim 1, characterized in that: The main frame also includes a stand pipe, one end of which is fixedly connected to the rear half frame, one end of which is connected to a connecting rod, and the connecting rod is hingedly connected to one end of the rear fork.

6. The folding bicycle according to claim 5, characterized in that: A rear seat is fixed on the top end of the rear fork portion. The rear seat comprises a load-bearing beam. Four ends of the load-bearing beam are movably connected with sliding wheels. When the bicycle is in a folded state, the sliding wheels abut against the ground.

7. The folding bicycle according to claim 5, characterized in that: The seat support rod is movably connected to the seat tube, a locking seat tube clamp is sleeved on the upper end of the seat tube, and the seat support rod is installed in the seat tube and fixed by the locking seat tube clamp.

8. The folding bicycle according to claim 7, characterized in that: The locking seat tube clamp comprises a clamp ring, a quick release handle, a screw rod and a nut. The clamp ring is sleeved on the seat tube, one end of the screw rod passes through the clamp ring and is connected to the nut, and the other end of the screw rod is connected to the quick release handle.

9. The folding bicycle according to claim 7, characterized in that: The surface of the vertical pipe is provided with strip openings.

10. The folding bicycle according to claim 1, characterized in that: The front fork and the rear fork are both connected with a quick release rod, the front wheel is movably mounted on the front fork via the quick release rod, the rear wheel is movably mounted on the rear fork via the quick release rod, and a quick release head is provided at one end of the quick release rod.

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