Multi-mode telescopic transmission shaft bicycle

Abstract

The utility model discloses a multi-mode telescopic transmission shaft bicycle which is characterized in that a rear frame comprises a telescopic mechanism, the telescopic mechanism comprises at least one telescopic pipe, and the telescopic pipe comprises a central pipe and an outer sleeve which are nested inside and outside, so that the rear frame can stretch and retract in the front-back direction; the transmission mechanism comprises a front clutch gear box, a pedal, a crank, a rear clutch gear box and a telescopic transmission shaft; the telescopic transmission shaft comprises an inner transmission shaft and at least one outer transmission sleeve which are nested from inside to outside, and the inner transmission shaft and the outer transmission sleeve are matched through a non-circular section, so that the telescopic transmission shaft can extend and retract in the front-back direction and is in transmission connection in the circumferential direction; the telescopic transmission shaft is in transmission connection between the front clutch gear box and the rear clutch gear box, and the telescopic transmission shaft can automatically adjust the adaptive length according to the change of the transmission distance between the front clutch gear box and the rear clutch gear box.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a bicycle with a multi-mode telescopic transmission shaft. Background Art

[0002] There are many types of bicycles on the market, but they are generally used for a single purpose and cannot meet the needs of riding for cargo, leisure and entertainment. Existing cargo and tandem bicycles generally use chain transmission, which has problems such as easy chain drop, heavy and large body, inconvenient to carry, long idle time, space occupation, and laborious and inconvenient operation.

[0003] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a topic to be studied and solved in the present invention. Summary of the invention

[0004] The utility model aims to provide a bicycle with a multi-mode telescopic transmission shaft so as to be telescopic.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a multi-mode telescopic transmission shaft bicycle, comprising a frame, a front wheel and a rear wheel rotatably connected to the frame, a handlebar and a seat connected to the frame, and a transmission mechanism; the frame comprises a front stand tube supported under the seat, a front frame located between the front stand tube and the front wheel, and a rear frame located between the front stand tube and the rear wheel;

[0006] The rear frame includes a telescopic mechanism, which includes at least one telescopic tube, which includes a central tube and an outer tube nested inside and outside, one end of the telescopic tube is fixedly connected to the front standpipe, and the other end is connected to the bracket of the rear wheel, so that the rear frame can be telescoped in the front and rear directions; and the rear frame is provided with a telescopic gear locking mechanism to lock the telescopic state of the rear frame;

[0007] The transmission mechanism comprises a front clutch gearbox, pedals, cranks, a rear clutch gearbox and a telescopic transmission shaft; the front clutch gearbox is mounted on a front seat tube or a front frame, the crank is transmission-connected to the front clutch gearbox, and the pedals are mounted on the cranks; the rear clutch gearbox is mounted at the center of the rear wheel and transmission-connected to the rear wheel; the telescopic transmission shaft comprises an inner transmission shaft and at least one outer transmission sleeve nested from inside to outside, and an anti-drop transmission structure is provided between the inner transmission shaft and the outer transmission sleeve, so that the telescopic transmission shaft can be telescopic in the front-to-back direction and transmission-connected in the circumferential direction; the telescopic transmission shaft is transmission-connected between the front clutch gearbox and the rear clutch gearbox, and the telescopic transmission shaft can automatically adjust the adaptive length according to the change of the transmission distance of the front clutch gearbox (22) and the rear clutch gearbox (28).

[0008] In the above solution, the front end of the telescopic transmission shaft is connected to the front clutch gear box through a front transmission universal joint.

[0009] In the above solution, the rear end of the telescopic transmission shaft is connected to the rear clutch gearbox via a rear transmission universal joint.

[0010] The above scheme also includes an electric motor and a battery pack, and the electric motor drives the rear wheels.

[0011] The above solution also includes a cargo box or a truck basket, which can be installed on the rear frame in the extended state.

[0012] The above scheme also includes a float and a steering plate assembly; the float can be fixed under the front wheel and the rear wheel, and the steering plate assembly can be installed on the frame and extend downward on the frame, so as to convert the bicycle into a water bicycle.

[0013] The above scheme also includes at least one set of multi-person riding seat components, which include an auxiliary seat, a neutral tube supported under the auxiliary seat, a middle clutch gear box fixedly installed relative to the neutral tube, a middle crank transmission-connected to the middle clutch gear box, and a middle pedal installed on the middle crank; the multi-person riding seat component is installed on the rear frame, so that the telescopic transmission shaft is transmission-connected to the rear clutch gear box after passing through the middle clutch gear box.

[0014] In the above solution, a front frame folding joint is provided on the front frame to enable the front frame to be folded.

[0015] The working principle and advantages of this utility model are as follows:

[0016] The utility model proposes a multi-mode telescopic drive shaft bicycle, which solves the problem that the chain is easily hung on the existing bicycle by arranging a telescopic drive shaft transmission. At the same time, the utility model has a small space after being folded, and can be put into a subway or in a car trunk. It is very convenient to store and carry, and can be ridden in multiple scenarios. It can meet the daily commuting riding needs of a single person, and can also meet the travel and leisure riding needs of two or more people. It can also become a cargo bicycle with a large cargo space. The conversion between multiple modes is convenient and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the first embodiment of the utility model in the unfolded state;

[0018] Figure 2 It is a schematic diagram of a shortened state of the first embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of a folded storage state of the first embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled storage state of the first embodiment of the utility model;

[0021] Figure 5 This is a structural schematic diagram of a multi-person riding seat assembly according to Embodiment 1 of the present utility model;

[0022] Figure 6 This is a schematic diagram of a two-person riding state in the first embodiment of the utility model;

[0023] Figure 7 This is a schematic diagram of the state of installing the telescopic cargo box in the first embodiment of the utility model;

[0024] Figure 8 This is a schematic diagram of the first embodiment of the utility model in which a truck basket is installed;

[0025] Fig. 9 This is a schematic diagram of the installation state of the cargo box in the first embodiment of the utility model;

[0026] Fig.10 It is a schematic diagram of a mid-mounted motor assembly according to the first embodiment of the present utility model;

[0027] Fig.11 This is a schematic diagram of the state of installing a mid-mounted motor in the first embodiment of the utility model;

[0028] Fig.12 It is a schematic diagram of a single-person riding buoy assembly according to the first embodiment of the utility model;

[0029] Fig.13 This is a schematic diagram of the installation state of the single-person riding buoy assembly in the first embodiment of the utility model;

[0030] Fig.14 It is a schematic diagram of a double-person riding buoy assembly according to the first embodiment of the utility model;

[0031] Fig.15 This is a schematic diagram of the installation state of the double riding buoy assembly in the first embodiment of the utility model;

[0032] Fig.16 This is a schematic diagram of the structure of the second embodiment of the utility model;

[0033] Fig.17 This is a structural schematic diagram of the third embodiment of the present utility model.

[0034] In the above drawings: 1. handlebar; 2. seat; 3. front wheel; 4. rear wheel; 5. front brake; 6. rear brake; 7. handlebar folding joint; 8. front frame folding joint; 9. front frame; 10. front riser; 11. front riser diagonal brace; 12. rear shelf riser; 13. rear shelf; 14. rear shelf right brace; 15. rear shelf left brace; 16. rear frame right transverse center tube; 17. rear frame left transverse center tube; 18. rear frame right transverse sleeve; 19. rear frame left transverse sleeve; 20. pedal; 21. crank; 22. front clutch gearbox; 23. front transmission universal joint; 24. Inner transmission shaft; 25. Outer transmission sleeve; 26. Second section of outer transmission sleeve; 27. Rear transmission universal joint; 28. Rear clutch gearbox; 29. ​​Positioning pin; 30. Fixing lock; 31. Torque sensor; 32. Motor; 33. Battery pack; 34. Power-off handbrake handle; 35. Controller; 36. Headlight; 37. Quick release buckle; 38. Auxiliary handlebar; 39. Middle pedal; 40. Middle crank; 41. Middle clutch gearbox; 42. Input transmission axle; 43, output transmission shaft; 44, auxiliary vehicle seat; 45, neutral tube; 46, neutral tube diagonal brace; 47, right transverse sleeve joint; 48, left transverse sleeve joint; 49, positioning pin; 50, fixing lock; 51, auxiliary transmission universal joint; 52, coupling; 53, auxiliary transmission universal joint; 54, retractable cargo box in folded state; 56, truck basket; 57, cargo box; 58, control line; 59, battery box; 60, center motor; 61, center clutch gearbox ; 62, input transmission shaft; 63, output transmission shaft; 64, right transverse sleeve joint; 65, left transverse sleeve joint; 66, positioning pin; 67, fixing lock; 68, auxiliary transmission universal joint; 69, coupling; 70, auxiliary transmission universal joint; 71, front wheel bracket; 72, steering shaft; 73, direction plate; 74, angle gauge; 75, propeller; 76, middle clutch gearbox; 77, input transmission shaft; 78, output transmission shaft; 79, right transverse sleeve joint ; 80. Left transverse sleeve section; 81. Locating pin; 82. Fixing lock; 83. Rear wheel bracket; 84. Float; 85. Bracket fixing ring; 86. Pedal; 87. Middle clutch gearbox; 88. Input transmission shaft; 89. Output transmission shaft; 90. Angle gauge; 91. Propeller; 92. Neutral tube; 93. Auxiliary vehicle seat; 94. Right transverse sleeve section; 95. Left transverse sleeve section; 96. Locating pin; 97. Fixing lock; 98. Auxiliary transmission universal joint; 99. Coupling; 100. Auxiliary transmission universal joint. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0036] The present invention will be clearly described below with drawings and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0037] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0038] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0039] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0040] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0041] The terms "front", "back", "upper" and "lower" used in this article are directional terms. In this case, they are only used to illustrate the positional relationship between the structures and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0042] Embodiment 1: See attached Figures 1 to 15 As shown:

[0043] A multi-mode telescopic transmission shaft bicycle comprises a frame, a front wheel 3 and a rear wheel 4 rotatably connected to the frame, a handlebar 1 and a seat 2 connected to the frame, and a transmission mechanism; the frame comprises a front riser 10 supported under the seat 2, a front frame 9 located between the front riser 10 and the front wheel 3, and a rear frame located between the front riser 10 and the rear wheel 4.

[0044] The rear frame includes a telescopic mechanism, which includes at least one telescopic tube, which includes a central tube and an outer tube nested inside and outside. One end of the telescopic tube is fixedly connected to the front standpipe 10, and the other end is connected to the bracket of the rear wheel 4, so that the rear frame can be telescoped in the front and rear directions; and a telescopic gear locking mechanism is provided on the rear frame to lock the telescopic state of the rear frame.

[0045] like Figures 1 to 4As shown, specifically, the rear frame includes a rear frame right transverse tube, a rear frame left transverse tube, a rear shelf 13, a rear shelf vertical tube 12, a rear shelf right support 14, and a rear shelf right support 15; the rear frame right transverse tube and the rear frame left transverse tube are each telescopic tubes, the rear frame right transverse tube is composed of a rear frame right transverse center tube 16 and a rear frame right transverse sleeve 18, and the rear frame left transverse tube is composed of a rear frame left transverse center tube 17 and a rear frame left transverse sleeve 19. The rear frame right transverse center tube 16 and the rear frame left transverse center tube 17 are both extended forward to be connected with the front vertical tube 10, that is, the telescopic tube is arranged in a manner that the center tube faces forward and the outer sleeve is at the rear.

[0046] The above is a preferred solution. Of course, in practice, one telescopic tube or three telescopic tubes are also possible, or the telescopic tube is designed to be in a three-section telescopic form, which is also feasible.

[0047] The transmission mechanism includes a front clutch gearbox 22, a pedal 20, a crank 21, a rear clutch gearbox 28 and a telescopic transmission shaft; the front clutch gearbox 22 is installed on the front seat tube 10 or the front frame, the crank 21 is transmission-connected to the front clutch gearbox 22, and the pedal 20 is installed on the crank 21; the rear clutch gearbox 28 is installed at the center of the rear wheel 4 and is transmission-connected to the rear wheel 4; the telescopic transmission shaft includes an inner transmission shaft 24 and at least one outer transmission sleeve 25 nested from the inside to the outside, and an anti-slip transmission structure is provided between the inner transmission shaft 24 and the outer transmission sleeve 25, so that the telescopic transmission shaft can be telescopic in the front and rear directions and transmission-connected in the circumferential direction; the telescopic transmission shaft is transmission-connected between the front clutch gearbox 22 and the rear clutch gearbox 28, and the telescopic transmission shaft is parallel to the telescopic tube.

[0048] Specifically, the anti-slip transmission structure between the inner transmission shaft 24 and the outer transmission sleeve 25 can be a spline, or the end of the inner transmission shaft 24 can be set to a non-circular cross-section (such as a hexagon), and the inner diameter of the outer transmission sleeve 25 is a non-circular cross-section (such as a hexagon) of a matching shape, so as to achieve transmission in the circumferential direction and sliding in the axial direction.

[0049] Specifically, the inner transmission shaft 24 extends forward to connect with the front clutch gearbox 22, and the rear end of the outer transmission sleeve 25 is connected with the rear clutch gearbox 28. In fact, the reverse arrangement is also possible, that is, the inner transmission shaft 24 extends backward to connect with the rear clutch gearbox 28, and the front end of the outer transmission sleeve 25 is connected with the front clutch gearbox 22, which is also feasible.

[0050] As shown in the figure, the telescopic transmission shaft is a three-section telescopic transmission shaft consisting of an inner transmission shaft 24, an outer transmission sleeve 25 and a second outer transmission sleeve 26. In practice, it is also feasible to use a two-section or four-section telescopic transmission shaft.

[0051] In order to reduce the assembly precision, a front transmission universal joint 23 can be used to connect the front end of the telescopic transmission shaft to the front clutch gearbox 22 , and a rear transmission universal joint 27 can be used to connect the rear end of the telescopic transmission shaft to the rear clutch gearbox 28 .

[0052] This embodiment also includes a motor 32, a battery pack 33 and necessary control circuits, and the motor 32 drives the rear wheel 4 to form an electric bicycle. Figure 1 As shown, the electric motor 32 can be installed in front of the front clutch gear box 22, and the battery pack 33 can be set in the front frame.

[0053] Specifically, a front frame folding joint 8 may be provided on the front frame so that the front frame can be folded. Figure 3 shown.

[0054] This embodiment can be Figure 3 Folding storage, can also be Figure 4 Decompose into three parts for storage.

[0055] This embodiment can be equipped with a multi-person riding seat assembly, which includes an auxiliary bicycle seat 44, a neutral tube 45 supported under the auxiliary bicycle seat 44, a middle clutch gear box 41 fixedly installed relative to the neutral tube 45, a middle crank 40 drivingly connected to the middle clutch gear box 41, a middle footrest 39 installed on the middle crank 40, a right horizontal sleeve section 47 and a left horizontal sleeve section 48. The specific multi-person riding seat assembly is as follows Figure 5 As shown, the multi-person riding seat assembly can be assembled on the rear frame through the quick release buckle, and the assembled state is as follows Figure 6 As shown, the right transverse sleeve connecting section 47 is connected to the right transverse sleeve 18 of the rear frame, and the left transverse sleeve connecting section 48 is connected to the left transverse sleeve 18 of the rear frame. The input transmission shaft 42 of the middle clutch gearbox 41 is connected to the output end of the front clutch gearbox 22 via the auxiliary transmission universal joint 53, the coupling 52, and the auxiliary transmission universal joint 51, and the output transmission shaft 43 of the middle clutch gearbox 41 is connected to the front transmission universal joint 23, thereby transforming into a bicycle for two people to ride. In practice, two or more sets of multi-person riding seat assemblies can also be equipped to transform into a bicycle for more than two people to ride.

[0056] This embodiment can be equipped with a cargo box or a truck basket. The state of the telescopic cargo box installed in this embodiment is as follows Figure 7 As shown, the state of installing the truck basket in this embodiment is as follows Figure 8 As shown, the state of installing the cargo box in this embodiment is as follows Fig. 9 shown to become a cargo bike.

[0057] This embodiment can be equipped with a central motor assembly, the composition of the central motor assembly is as follows Fig.10 As shown, the installed status is as follows Fig.11 As shown, this embodiment becomes a dual-motor electric vehicle.

[0058] This embodiment can be equipped with a single-person riding buoy assembly, which includes a buoy, a steering plate assembly and a propeller assembly. The specific components are as follows: Fig.12 As shown, the installed status is as follows Fig.13 As shown, this embodiment becomes a water bicycle for single-person riding.

[0059] This embodiment can be equipped with a multi-person riding buoy assembly, which includes a buoy, a steering plate assembly and a propeller assembly. The specific components are as follows: Fig.14 As shown, the installed status is as follows Fig.15 As shown, this embodiment becomes a water bicycle for two persons to ride.

[0060] In this embodiment, a pair of bevel gears can usually be used in the front clutch gear box 22 and the rear clutch box 28 to transfer the power by 90 degrees. The clutch function can adopt the structure of the existing flywheel (or overrunning clutch), except that the existing sprocket structure is changed to a gear structure.

[0061] In this embodiment, the telescopic gear locking mechanism can be formed by the cooperation of a positioning pin 29 and a fixed lock 30 provided on the telescopic tube, that is, an elastic locking pin form. Of course, it is also feasible to adopt other locking mechanisms.

[0062] Example 2: See Fig.16 As shown, a multi-mode telescopic transmission shaft bicycle includes a frame, a front wheel 3 and a rear wheel 4 rotatably connected to the frame, a handlebar 1 and a seat 2 connected to the frame, and a transmission mechanism; the frame includes a front riser 10 supported under the seat 2, a front frame 9 located between the front riser 10 and the front wheel 3, and a rear frame located between the front riser 10 and the rear wheel 4. The difference from the first embodiment is that the right transverse center tube 16 and the left transverse center tube 17 of the rear frame are both extended backward to be connected to the rear wheel 4, that is, the telescopic tube is arranged in a manner that the center tube faces backward and the outer tube is arranged in front. The rest is the same as the first embodiment and will not be repeated here.

[0063] Example 3: See Fig.17As shown, a multi-mode telescopic transmission shaft bicycle includes a frame, a front wheel 3 and a rear wheel 4 rotatably connected to the frame, a handlebar 1 and a seat 2 connected to the frame, and a transmission mechanism; the frame includes a front riser 10 supported under the seat 2, a front frame 9 located between the front riser 10 and the front wheel 3, and a rear frame located between the front riser 10 and the rear wheel 4. The difference from the first embodiment is that it is a fixed two-person bicycle, the specific form of the frame is different, the front frame 9 is only a horizontal straight tube, the rear frame is only a telescopic tube, and the telescopic transmission shaft adopts a two-section telescopic form. Other parts are the same as the first embodiment and will not be repeated.

[0064] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-mode telescopic transmission shaft bicycle, comprising a frame, a front wheel (3) and a rear wheel (4) rotatably connected to the frame, a handlebar (1) and a seat (2) connected to the frame, and a transmission mechanism; the frame comprises a front riser (10) supported under the seat (2), a front frame (9) located between the front riser (10) and the front wheel (3), and a rear frame located between the front riser (10) and the rear wheel (4); characterized in that: The rear frame comprises a telescopic mechanism, the telescopic mechanism comprises at least one telescopic tube, the telescopic tube comprises a central tube and an outer tube which are nested inside and outside, one end of the telescopic tube is fixedly connected to the front standpipe (10), and the other end is connected to the bracket of the rear wheel (4), so that the rear frame can be telescoped in the front and rear directions; and a telescopic gear locking mechanism is provided on the rear frame to lock the telescopic state of the rear frame; The transmission mechanism comprises a front clutch gearbox (22), a pedal (20), a crank (21), a rear clutch gearbox (28) and a telescopic transmission shaft; the front clutch gearbox (22) is mounted on a front seat tube (10) or a front frame, the crank (21) is transmission-connected to the front clutch gearbox (22), and the pedal (20) is mounted on the crank (21); the rear clutch gearbox (28) is mounted at the center of the rear wheel (4) and transmission-connected to the rear wheel (4); the telescopic transmission shaft comprises An inner transmission shaft (24) and at least one outer transmission sleeve (25) are nested from the inside to the outside, and an anti-dropping transmission structure is provided between the inner transmission shaft (24) and the outer transmission sleeve (25), so that the telescopic transmission shaft can be telescopic in the front-to-back direction and transmission-connected in the circumferential direction; the telescopic transmission shaft is transmission-connected between the front clutch gearbox (22) and the rear clutch gearbox (28), and the telescopic transmission shaft can adapt to the length according to the change of the transmission distance of the front clutch gearbox (22) and the rear clutch gearbox (28).

2. The multi-mode telescopic transmission shaft bicycle according to claim 1, characterized in that: The front end of the telescopic transmission shaft is transmission-connected to the front clutch gear box (22) via a front transmission universal joint (23).

3. The multi-mode telescopic transmission shaft bicycle according to claim 1 or 2, characterized in that: The rear end of the telescopic transmission shaft is transmission-connected to the rear clutch gearbox (28) via a rear transmission universal joint (27).

4. The multi-mode telescopic transmission shaft bicycle according to claim 1, characterized in that: It also includes an electric motor (32) and a battery pack (33), wherein the electric motor (32) drives the rear wheels (4).

5. The multi-mode telescopic transmission shaft bicycle according to claim 1, characterized in that: Also included is a cargo box (57) or a truck basket (56), which can be mounted on the rear frame in an extended state.

6. The multi-mode telescopic transmission shaft bicycle according to claim 1, characterized in that: It also includes a buoy, a steering plate assembly and a propeller assembly; the buoy can be fixed under the front wheel (3) and the rear wheel (4), and the steering plate assembly and the propeller assembly can be installed on the frame and extend downward from the frame, thereby converting the bicycle into a water bicycle.

7. The multi-mode telescopic transmission shaft bicycle according to claim 1, characterized in that: The vehicle further comprises at least one set of multi-person riding seat components, the multi-person riding seat components comprising an auxiliary vehicle seat (44), a neutral tube (45) supported below the auxiliary vehicle seat (44), a middle clutch gear box (41) fixedly mounted relative to the neutral tube (45), a middle crank (40) drivingly connected to the middle clutch gear box (41), and a middle pedal (39) mounted on the middle crank (40); the multi-person riding seat components are mounted on the rear frame, so that the telescopic transmission shaft is drivingly connected to the rear clutch gear box (28) after passing through the middle clutch gear box (41).

8. The multi-mode telescopic transmission shaft bicycle according to claim 1, characterized in that: The front frame (9) is provided with a front frame folding joint (8) so that the front frame (9) can be folded.

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