Folding bicycle

Abstract

Folding bicycle comprising a top tube (1), wherein both ends of the top tube are connected to a front wheel frame (2) and a rear wheel frame (3), wherein a front wheel (4) is mounted on the front wheel frame, wherein a rear wheel (5) is mounted on the rear wheel frame, characterized in that two folding devices (11) are provided on the top tube, by which the top tube (1) can be folded into three segments, wherein when the rear wheel frame (3) causes the rear wheel to roll forward longitudinally, the top tube is folded by the folding devices (11), wherein by adjusting a folding angle the front wheel (4) and the rear wheel (5) can be brought into a parallel state, wherein one of the two folding devices (11) is arranged on one side of the front part of the top tube (1), while the other is arranged on the opposite side of the rear part of the top tube (1).

Description

A folding bicycle Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a folding bicycle. Background Art

[0002] As urban traffic becomes increasingly congested and vehicle exhaust emissions increase, people are increasingly inclined to use lightweight and environmentally friendly means of transportation. At the same time, as people's living standards improve, the pace of work and life accelerates, especially in first-tier cities. To adapt to the fast-paced life, people use mopeds as a means of transportation. Mopeds have many advantages, such as portability and environmental friendliness. Power-assisted vehicles typically include bicycles, tricycles, scooters, carts, and other related vehicles.

[0003] Folding bicycles are becoming increasingly popular, with a wide variety of brands and models emerging on the market. Folding bicycles are primarily categorized into two types: horizontal and vertical. Each type has its own advantages and disadvantages. Horizontal folding is simple, technologically mature, and easy to operate, but its folded size is less compact. Vertical folding is more complex, but its folded size is more compact, often offering advantages in terms of length, width, and height. However, to date, both horizontally and vertically folding bicycles have non-parallel front and rear wheels, making them inconvenient to propel directly on their two wheels. Most require lifting one wheel and resting the other on the ground for short distances, making them inconvenient to operate. Some also require the installation of additional stands and easy-to-walk wheels, which adds numerous mechanical components, weight, and cost.

[0004] In addition, in order to facilitate the carrying of vehicles, vehicles are usually designed to be foldable. The handlebar head is an important component of the vehicle, and the folding design of the handlebar also has many structures. The existing folding handlebars are not convenient to fold, the folding process is relatively complicated, and folding and restoring are very troublesome. In addition, some folding handlebars are prone to rebounding when in the folded state or the handlebars are prone to shaking when in use.

[0005] Summary of the Invention

[0006] In view of the above problems, the present invention aims to provide a foldable bicycle which is easy to fold and use.

[0007] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0008] A folding bicycle comprises a beam, wherein both ends of the beam are connected to a front wheel frame and a rear wheel frame, a front wheel is mounted on the front wheel frame, and a rear wheel is mounted on the rear wheel frame, and two folders are provided on the beam, and the beam can be folded into three sections by the two folders; when the rear wheel frame drives the rear wheel to flip forward longitudinally, the beam is folded by the folders, and the front wheel and the rear wheel can be placed in a parallel state by adjusting the folding angle; one of the two folders is provided on one side of the front portion of the beam, and the other is provided on the other side of the rear portion of the beam.

[0009] The rear wheel frame is provided with a loading platform, which is mounted in cooperation with the seat tube fixing seat via a steering shaft sleeve, and the loading platform can be rotated via the steering shaft sleeve.

[0010] The hinges of the two folders are both position-limitable hinges.

[0011] The vehicle beam is folded by two folders to form a "Z"-shaped structure, and the front wheel and the rear wheel can be placed in a parallel state by adjusting the folding angle.

[0012] After the vehicle beam is folded by two folding devices, the distance between the front wheel and the rear wheel can be adjusted by adjusting the folding angle.

[0013] After the vehicle beam is folded by two folders, the three sections of the vehicle beam are all in a parallel state, and the vehicle beam is in a completely folded state.

[0014] The folding mechanism further comprises a locking mechanism comprising a locking pin seat and a reset member, wherein the locking slot is provided on the docking seat and the handlebar seat is hingedly engaged with the docking seat, and the handlebar seat can be folded relative to the steering rod seat; the folding locking structure comprises a locking pin seat and a reset member, the locking slot is provided on the docking seat, the handlebar seat is provided with a travel slide, the locking pin seat can move along the travel slide and can be reset by the reset member; when the locking pin seat is engaged with the locking slot, the locking pin seat can move along the travel slide toward the outer end of the handlebar to disengage from the locking slot, so that the handlebar can be folded relative to the steering rod seat.

[0015] The docking seat is provided with a docking axis hole, and an articulated movable cavity is also provided in the docking seat. The handle seat is provided with a hinge axis hole, and the hinge axis hole and the docking axis hole are docked and matched through a hinge axis. The handle seat is also provided with a hinge base for correspondingly matching with the articulated movable cavity. The articulated base is accommodated in the articulated movable cavity and can rotate along the articulated movable cavity.

[0016] The locking slot is located at one end of the docking seat, and the locking slot is arranged to be a side opening.

[0017] A reset cavity is also provided on the handle seat. One end of the reset member abuts against the lock pin seat, and the other end abuts against the reset cavity.

[0018] The reset member adopts a reset spring, the number of the reset members is 2, the number of the reset cavities is two, and the two reset cavities are respectively located on both sides of the travel slide.

[0019] A reset abutment groove is provided in the lock pin seat.

[0020] The locking slot and the travel slide are located on the same horizontal plane.

[0021] The lock pin seat comprises a lock pin body and button parts located at both ends of the lock pin body, and the lock pin body passes through the travel slide groove.

[0022] The button portion is provided with a sliding wall portion, and the sliding wall portion can slide along the outer side wall of the handle seat.

[0023] The lower part of the docking seat is provided with an embedding groove, which is used to correspond to the lock pin body; when the handlebar is in the folded state, the upper part of the lock pin body is embedded in the embedding groove.

[0024] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides two hinges on the front half of the vehicle beam, which can be rotated and combined to form a front and rear wheel that can be folded in parallel, so that the two wheels can be pushed after folding; the loading platform structure is optimized, and the loading platform can be rotated to form a storage platform after the vehicle is folded, which is convenient for use as an outdoor table; and the front and rear wheels can be made coaxial after folding, and the volume after folding can be minimized, and various spaces are fully utilized, the structure is simple, and the folding operation is convenient, so that the folded vehicle can be directly pushed using the wheels themselves without adding auxiliary wheels, which improves the user experience and provides a good structural foundation for expanding other additional functions; in addition, by optimizing the folding locking mechanism and combining the handle seat with the docking seat, the handlebar folding operation is convenient and effective, and has good stability when in use, which is convenient for users to use.

[0025] The features of the present invention can be clearly understood by referring to the drawings and the following detailed description of preferred embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic diagram of the unfolded structure of the folding bicycle of the present invention;

[0027] FIG2 is a schematic diagram of the folding structure of the folding bicycle of the present invention;

[0028] FIG3 is a second schematic diagram of the unfolded structure of the folding bicycle of the present invention;

[0029] FIG4 is a second schematic diagram of the folding structure of the folding bicycle of the present invention;

[0030] FIG5 is a schematic diagram of a partially folded structure of a folding bicycle of the present invention;

[0031] FIG6 is a third schematic diagram of the folding structure of the folding bicycle of the present invention;

[0032] FIG7 is a schematic structural diagram of the handlebar and steering rod seat of the present invention in use;

[0033] FIG8 is a schematic structural diagram of the handlebar and steering rod seat of the present invention in a folded state;

[0034] FIG9 is a schematic diagram of the exploded structure of the handlebar and steering rod base of the present invention;

[0035] FIG10 is a schematic cross-sectional view of the mounting structure of the handlebar and steering stem base of the present invention;

[0036] FIG11 is a schematic diagram of the structure of the handle base of the present invention;

[0037] FIG12 is a schematic structural diagram of a lock pin seat according to the present invention;

[0038] FIG13 is a schematic diagram of the docking seat structure of the present invention;

[0039] FIG. 14 is a second structural schematic diagram of the docking station of the present invention. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0041] Example 1

[0042] The bicycle products involved in the present utility model are not limited to traditional bicycles. The bicycles involved in the present utility model can also include other two-wheeled vehicle products, such as electric bicycles, scooters, folding scooters, folding carts and other two-wheeled vehicles with similar structures. Therefore, the above vehicle specifications are all bicycle products defined in the present utility model.

[0043] As shown in Figures 1 and 2, a folding bicycle of the present invention includes a beam 1, with two ends of the beam 1 connected to a front wheel frame 2 and a rear wheel frame 3. A front wheel 4 is installed on the front wheel frame 2, and a rear wheel 5 is installed on the rear wheel frame 3.

[0044] When the bicycle is unfolded completely, the beam 1 is generally straight, parallel to the line connecting the front wheel axle and the rear wheel axle, and also parallel to the ground.

[0045] The rear wheel frame 3 includes a seat tube mount 31 and a rear fork 32. The seat tube mount 31 is fixedly connected to the rear end of the beam 1, and the rear wheel 5 is mounted on the rear fork 32. The seat tube mount 31 has a latch 311 at its upper end and a hinge 312 at its lower end. The upper end of the rear fork 32 is movably connected to the latch 311 of the seat tube mount 31, while the lower end is hingedly connected to the hinge 312 of the seat tube mount 31. When the rear wheel is unfolded, the upper portion is tightly connected by a latch, relying on the weight of the vehicle and the rider. To fold the rear wheel, the latch 311 is manually unlocked, and the rear fork 32 is folded clockwise around the hinge 312 downward and forward, causing the entire rear wheel 5 and rear fork 32 to flip forward 180 degrees to the front of the center axle. After the rear wheel 5 flips to the front of the seat tube mount 31, the rear wheel axle remains on the line connecting the front and rear wheel axles before the flip.

[0046] The front wheel skeleton 2 includes a head tube 21 and a front fork 22. The head tube 21 is fixedly connected to the end of the beam 1. The front fork 22 is threadedly fixed to the head tube 21. The front wheel 4 is fixedly connected to the front fork 22. The top of the head tube 21 is fixedly connected to the handlebar assembly 6. The handlebar assembly 6 includes a head tube 61 and a handlebar 62. The lower end of the head tube 61 is folded and connected to the head tube 21 through a handlebar folding mechanism 23. The head tube 61 can be folded downward around the handlebar folding mechanism 23. The upper end of the head tube 61 is fixedly connected to the handlebar 62. One end of the handlebar 61 has a handlebar folding structure 611. The handlebar 61 can be bent 90 degrees along the handlebar folding structure 611.

[0047] The front half of the beam 1 is provided with two front and rear folders 11 near the head tube 61. The folders 11 can be of the common style currently on the market, that is, a vertical hinge on one side and an openable and closable mechanism on the other side. At the same time, the hinges of the two folders 11 are both limitable hinges.

[0048] Example 2

[0049] Based on the embodiment 1, the hinges of the two folders 11 in one of the present embodiments are both located on the same side of the vehicle beam 1 and are both perpendicular to the vehicle beam 1 .

[0050] After the rear wheel 5 is flipped to the front of the seat tube fixing base 31, the handlebar 61 is folded 90 degrees along the handlebar folding structure 611, and then the head tube 61 is folded along the handlebar folding mechanism 23 to a position below the folder 11 on the same side close to the front wheel 4.

[0051] After the rear wheel and handle assembly 6 are folded, the two folders 11 of the beam 1 are opened, and they are rotated horizontally 90 degrees along the hinges and limited, and finally the front wheel frame 2 and the front wheel 4 are rotated horizontally 180 degrees backward.

[0052] After the front wheel frame 2 and the front wheel 4 rotate 180 degrees, the vehicle beam 1 forms a U-shaped shape, and a certain space is formed between the vehicle beams on both sides. The folded-down vehicle head pipe 61 is just located within the range of this space.

[0053] After the front wheel frame 2 and the front wheel 4 rotate 180 degrees, the front wheel 4 and the rear wheel 5 are parallel, and the front wheel 4 and the rear wheel 5 can be in a coaxial position.

[0054] After the front wheel frame 2 and the front wheel 4 rotate 180 degrees, the axles of the front wheel 4 and the rear wheel 5 are close to each other, and the folding angle is fixed by the limit hinge. In this way, by holding the vehicle seat, the vehicle can be directly pushed by the front wheel 4 and the rear wheel 5 without the need to install additional auxiliary wheels.

[0055] Example 3

[0056] In combination with Example 1, as shown in FIG3 and FIG4, one of the two folders 11 in this embodiment is arranged on one side of the front portion of the vehicle beam 1, and the other is arranged on the other side of the rear portion of the vehicle beam 1; this embodiment is a preferred embodiment.

[0057] After the rear wheel 5 is flipped to the front of the seat tube fixing base 31, the handlebar 61 is folded 90 degrees along the handlebar folding structure 611, and then the head tube 61 is folded along the handlebar folding mechanism 23 to a position below the folder 11 on the same side close to the front wheel 4.

[0058] After the rear wheels and handlebar assembly 6 are folded, one folder 11 rotates horizontally backward, and then the other folder 11 rotates horizontally forward in the opposite direction. The beam 1 is folded by the two folders 11 to form a "Z"-shaped structure, and by adjusting the folding angle, the front wheels 4 and the rear wheels 5 can be placed in a parallel state.

[0059] As shown in FIG5 , after the vehicle beam 1 is folded by two folders 11 , the distance between the front wheel and the rear wheel can be adjusted by adjusting the folding angle.

[0060] As shown in FIG6 , one folder 11 rotates 180 degrees horizontally backward, and then the other folder 11 rotates 180 degrees horizontally forward in the opposite direction so that the three sections of the beam 1 are in a parallel state, and the beam 1 is in a fully folded state.

[0061] After the front wheel frame 2 and the front wheel 4 are folded, when the front wheel 4 and the rear wheel 5 are in a parallel state, the folding angle is fixed by a limit hinge or other locking mechanism. In this way, by holding the vehicle seat, the vehicle can be directly pushed by the front wheel 4 and the rear wheel 5 without the need to install additional auxiliary wheels.

[0062] When unfolded, a loading platform 7 is mounted on the seat tube mounting 31. The loading platform 7 is mounted horizontally via a rotatable steering sleeve 71 below the seat tube clamp. When the bicycle is folded, the loading platform 71 can be rotated 180 degrees via the steering sleeve 71 and placed on top of the bicycle beam 1, forming a loading platform for the bicycle when used as a stroller.

[0063] Example 4

[0064] Based on any of the above embodiments, in combination with Figures 7 to 14, this embodiment discloses a folding handlebar assembly for a folding bicycle, including a steering rod seat 200 and handlebars 100 located on both sides of the steering rod seat 200. The lower part of the steering rod seat 200 is connected to the front frame. Usually, the vehicle is preferably a bicycle, and it can also be an electric vehicle, electric bicycle, tricycle, scooter, cart or other related vehicles. This structure can be applicable to a variety of different specifications of vehicles and is not limited to the above-mentioned vehicles.

[0065] In the specific structure, the handlebar 100 includes a handle body 110 and a handle seat 120 arranged at one end of the handle body 110. The handle body 110 can have various shapes and specifications according to usage requirements. The steering rod seat 200 is provided with a docking seat 210 for hingedly cooperating with the handle seat 120. The docking seat 210 is usually set at both ends, and the middle part can be integrally docked, or it can be fixed to the two ends of the steering rod seat body 220 respectively. The handle seat 120 and the docking seat 210 are hingedly matched, and usually adopt a hinge shaft 400 to realize hinged movement, and the handlebar 100 can be folded relative to the steering rod seat 200. In a specific embodiment, it is usually It is folded downward to form a parallel arrangement with the lower rod body of the steering rod seat 200, thereby achieving a reduction in the lateral size; in the specific structure, a docking axis hole 211 is provided on the docking seat 210, and a hinged activity cavity 213 is also provided in the docking seat 210, and a hinged axis hole 124 is provided on the handle seat 120, and the hinged axis hole 124 and the docking axis hole 121 are docked and matched through the hinge axis 400. The handle seat 120 is also provided with a hinged base 121 for correspondingly matching with the hinged activity cavity 213. The hinged base 121 is accommodated in the hinged activity cavity 213. Depending on different positions, it can be partially accommodated or fully accommodated, and can be rotated along the hinged activity cavity 213.

[0066] When the folding mechanism 300 is in the state of being unfolded, the folding mechanism 300 of vehicle body 100 is in the state of being unfolded, and the folding mechanism 300 of vehicle body 100 is in the state of being unfolded.

[0067] Preferably, the locking slot 211 is located at one end of the docking seat 210, and the locking slot 211 is set to be laterally open. The locking slot 211 and the travel slide groove 122 are located in the same horizontal plane, which facilitates the sliding of the lock pin seat 310. The lock pin seat 310 includes a lock pin body 311 and a button portion 312 located at both ends of the lock pin body 311. The lock pin body 311 passes through the travel slide groove 122, and a sliding wall portion 313 is provided on the button portion 312. The sliding wall portion 313 can slide along the outer wall of the handle seat 120.

[0068] When folding and unlocking is required, the user presses the button portion 312 and slides it horizontally and outward in parallel, so that the lock pin body 311 slides along the travel slide groove 122, and the lock pin body 311 disengages from the locking slot 211 to complete the unlocking. Then the user deflects the handle body 110 downward, so that the handle seat 120 rotates relative to the docking seat 210, deflects downward along the hinged active cavity 213, and completes the folding operation; wherein, the button portion 312 is preferably provided on both sides, and the user can slide by clamping the button portion 312 on both sides, or can slide on one side; preferably, a sliding wall portion 313 is provided to increase the sliding smoothness.

[0069] In combination with the above, in the specific structure, a reset cavity 123 is also provided on the handle seat 120, and one end of the reset member 320 abuts against the lock pin seat 310, and the other end abuts against the reset cavity 123, wherein a reset abutting groove 314 is provided in the lock pin seat 310, and the reset abutting groove 314 and the reset cavity 123 are arranged relative to each other, so as to facilitate the abutting cooperation of the reset member 320; preferably, the reset member 320 adopts a reset spring, the number of reset members 320 is 2, the number of reset cavities 123 is two, and the two reset cavities 123 are respectively located on both sides of the travel slide groove 122; the lower part of the docking seat 210 is provided with an embedding groove 214, which is used to correspond to the lock pin body 311; when the handlebar 100 is in the folded state, the upper part of the lock pin body 311 is embedded in the embedding groove 214.

[0070] By optimizing the above structure, the locking pin body 311 can be embedded in the locking groove 21 to prevent the handlebar 10 from rebounding in the folded state, thereby increasing the stability of the folded state; by optimizing the arrangement structure of the reset member 320, after the handlebar 100 is folded, the reset member 320 can be used to increase the locking interference between the locking pin body 311 and the locking groove 214, thereby increasing the stability in the folded state.

[0071] The present invention optimizes the folding locking mechanism and combines the cooperation between the handle seat and the docking seat, so that the handlebar folding operation is convenient and effective, and has good stability when in use, which is convenient for users.

[0072] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the invention. Any simple modification, equivalent change or modification made to the above embodiment based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A folding bicycle, comprising a beam, wherein two ends of the beam are connected to a front wheel frame and a rear wheel frame, a front wheel is mounted on the front wheel frame, and a rear wheel is mounted on the rear wheel frame, wherein: The beam is provided with two folders, and the beam can be folded into three sections through the two folders; when the rear wheel frame drives the rear wheel to flip forward longitudinally, the beam is folded through the folders, and the front wheel and the rear wheel can be in a parallel state by adjusting the folding angle; One of the two folders is arranged at one side of the front part of the vehicle beam, and the other is arranged at the other side of the rear part of the vehicle beam.

2. A folding bicycle according to claim 1, characterized in that: The rear wheel frame is provided with a loading platform, which is installed in cooperation with a seat tube fixing seat via a steering shaft sleeve, and the loading platform can be rotated via the steering shaft sleeve.

3. A folding bicycle according to claim 1, characterized in that: The hinges of the two folders are both limitable hinges.

4. A folding bicycle according to claim 1, characterized in that: The vehicle beam is folded by two folders to form a "Z"-shaped structure, and the front wheel and the rear wheel can be placed in parallel by adjusting the folding angle.

5. A folding bicycle according to claim 1, characterized in that: After the vehicle beam is folded by two folders, the distance between the front wheel and the rear wheel can be adjusted by adjusting the folding angle.

6. A folding bicycle according to claim 1, characterized in that: After the vehicle beam is folded by two folders, the three sections of the vehicle beam are all in a parallel state, and the vehicle beam is in a completely folded state.

7. A folding bicycle according to any one of claims 1 to 6, characterized in that: The folding wheel also comprises a steering rod seat and a handlebar located on both sides of the steering rod seat, the handlebar comprising a handle body and a handle seat arranged at one end of the handle body, the steering rod seat is provided with a docking seat for hingedly cooperating with the handle seat, the handle seat is hingedly cooperating with the docking seat, and the handlebar can be folded relative to the steering rod seat; the folding locking mechanism also comprises a locking pin seat and a reset member, the docking seat is provided with a locking slot, the handle seat is provided with a travel slot, the locking pin seat can move along the travel slot and can be reset by the reset member; when the locking pin seat is engaged with the locking slot, the locking pin seat can move along the travel slot toward the outer end of the handlebar to disengage from the locking slot, so that the handlebar can be folded relative to the steering rod seat.

8. A folding bicycle according to claim 7, characterized in that: The docking seat is provided with a docking axis hole, and an articulated activity cavity is also provided in the docking seat. The handle seat is provided with an articulated axis hole. The articulated axis hole and the docking axis hole are docked and matched through an articulated axis. The handle seat is also provided with an articulated base for correspondingly matching with the articulated activity cavity. The articulated base is accommodated in the articulated activity cavity and can rotate along the articulated activity cavity.

9. A folding bicycle according to claim 8, characterized in that: The locking slot is located at one end of the docking seat, and the locking slot is arranged to be open laterally.

10. A folding bicycle according to claim 7, characterized in that: A reset cavity is also provided on the handle seat, one end of the reset member abuts against the lock pin seat, and the other end abuts against the reset cavity.

11. A folding bicycle according to claim 10, characterized in that: The reset member adopts a reset spring, the number of the reset members is 2, the number of the reset cavities is two, and the two reset cavities are respectively located on both sides of the travel slide groove.

12. The folding bicycle according to claim 10, characterized in that: A reset abutment groove is arranged in the lock pin seat.

13. A folding bicycle according to claim 12, characterized in that: The locking slot and the travel slide slot are located on the same horizontal plane.

14. A folding bicycle according to claim 13, characterized in that: The lock pin seat comprises a lock pin body and button parts located at two ends of the lock pin body, and the lock pin body passes through the travel slide groove.

15. A folding bicycle according to claim 14, characterized in that: The button portion is provided with a sliding wall portion, and the sliding wall portion can slide along the outer side wall of the handle seat.

16. A folding bicycle according to claim 15, characterized in that: The lower part of the docking seat is provided with an embedding groove, and the embedding groove is used to correspond with the lock pin body; when the handlebar is in a folded state, the upper part of the lock pin body is embedded in the embedding groove.