Bicycle with wide tread

Abstract

The utility model relates to the technical field of bicycles, and provides a wide tread bicycle which comprises a frame, a front wheel, a rear wheel, a front axle and a rear axle, the front wheel and the rear wheel are both automobile tires, the frame comprises a front support, a rear support and a bicycle body support with a head tube, the front support is rotatably connected with the head tube, and the rear support is fixedly connected with the bicycle body support. A hub of the front wheel sleeves the front axle and is rotatably connected with the front support, the rear axle comprises an outer axle body and an inner axle core, the inner axle core coaxially penetrates one end of the outer axle body, the inner axle core and the outer axle body can rotate relatively, an auxiliary support is fixedly connected to the rear support and fixedly sleeves the inner axle core, and a hub of the rear wheel sleeves the outer axle body and is rotatably connected with the rear support. The flywheel is fixedly connected to the outer shaft body. According to the utility model, the technical problem existing when the automobile tire is applied to the bicycle is solved.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and more specifically, to a bicycle with a wide tire tread. Background Technology

[0002] In some existing technologies (such as patent document CN206885228U), automobile tires are used instead of traditional bicycle tires. Because automobile tires are heavier, they are more convenient for exercise, and their wider tread provides better stability, allowing them to be placed on the ground without tipping over, eliminating the need for a kickstand. However, automobile tires are typically mounted on a rim, and when used on bicycles, there is a problem with mounting the automobile tire to the driveshaft (i.e., the rear axle of the bicycle) and achieving power transmission. How to solve this problem is a key research focus and challenge in this field. Utility Model Content

[0003] The purpose of this invention is to provide a bicycle with a wide tread to solve the problem of difficulty in installing car tires on bicycles and achieving transmission.

[0004] This utility model is achieved through the following technical solution:

[0005] A wide-tread bicycle includes a frame, a front wheel, a rear wheel, a front axle, and a rear axle. Both the front and rear wheels are automobile tires. The frame includes a front support, a rear support, and a frame with a head tube. The front support is rotatably connected to the head tube, and the rear support is fixedly connected to the frame. The hub of the front wheel is fitted onto the front axle and rotatably connected to the front support. The rear axle includes an outer axle and an inner axle core. The inner axle core is coaxially inserted through one end of the outer axle and the two can rotate relative to each other. An auxiliary support is fixedly connected to the rear support and is fixedly fitted onto the inner axle core. The hub of the rear wheel is fitted onto the outer axle and rotatably connected to the rear support. The freewheel is fixedly connected to the outer axle.

[0006] Optionally, the outer shaft includes a flywheel shaft and a drive shaft, one end of the flywheel shaft is connected to one end of the drive shaft by a fastener, the inner shaft core is inserted at the end of the flywheel shaft away from the drive shaft, and the hub of the rear wheel is sleeved on the drive shaft.

[0007] Optionally, the front bracket includes a front support plate and a first front beam, a second front beam, and a third front beam located in the same plane. The first front beam extends along the width direction of the bicycle. The upper end of the second front beam is connected to one end of the first front beam. The upper end of the third front beam is connected to the lower end of the second front beam, and the lower end of the third front beam is located below the middle of the first front beam. The front support plate is connected to the lower end of the third front beam, and the front support plate is provided with a front support sleeve for supporting the front axle.

[0008] The rear support includes a rear support plate and a first rear beam, a second rear beam, and a third rear beam located in the same plane. The first rear beam extends along the width direction of the bicycle. The upper end of the second rear beam is connected to one end of the first rear beam. The upper end of the third rear beam is connected to the lower end of the second rear beam, and the lower end of the third rear beam is located below the middle of the first rear beam. The rear support plate is connected to the lower end of the third rear beam, and the rear support plate is provided with a rear support sleeve for supporting the rear axle.

[0009] Optionally, the auxiliary support includes an auxiliary support plate and connecting ears fixedly disposed on both sides of the auxiliary support plate, and the second rear beam and / or the third rear beam are fixedly connected to the connecting ears.

[0010] Optionally, the first front beam, the second front beam, the third front beam, the first rear beam, the second rear beam, and the third rear beam are all rectangular tubes.

[0011] Optionally, the frame includes an upper beam, a vertical beam, a lower beam, and a mounting tube for mounting pedal axles. The upper beam extends along the length of the bicycle, and a connecting beam is connected to the front end of the upper beam. The head tube is located at the front end of the connecting beam, and the vertical beam and the lower beam are both connected between the upper beam and the mounting tube.

[0012] Optionally, the upright beam includes an upright tube and reinforcing tubes symmetrically arranged on both sides of the upright tube. The lower end of the upright tube is fixedly connected to the mounting tube, and the upper end of the upright tube is fixedly connected to the upper beam. The upper end of the upright tube extends out of the top of the upper beam and is used to connect the seat tube of the cushion. The upper end of the reinforcing tube is fixedly connected to the upright tube, and the lower end of the reinforcing tube is fixedly connected to the mounting tube.

[0013] Optionally, the lower beam includes two lower support beams, and the two lower support beams and the mounting pipe form a triangular structure.

[0014] Optionally, the upper beam and the lower support beam are both rectangular tubes; the mounting tube, the riser, and the reinforcing tube are all round tubes.

[0015] Optionally, a front support angle iron is fixedly connected to the bottom of the front bracket, and a rear support angle iron is fixedly connected to the bottom of the rear bracket.

[0016] The technical solution of this utility model has at least the following advantages and beneficial effects: In this utility model, the rear axle includes an outer axle body and an inner axle core, which can rotate relative to each other. The inner axle core is fixed relative to the bracket. The flywheel is fixed on the outer axle body. When the pedal is stepped on, the chainring rotates. The chainring drives the flywheel and the outer axle body to rotate through the chain, thereby driving the rear wheel to rotate and realizing transmission. This solves the technical problems existing in the application of automobile tires on bicycles. Attached Figure Description

[0017] Figure 1 A schematic diagram of the frame structure of a wide-tread bicycle provided by this utility model;

[0018] Figure 2 This is a structural diagram of the rear support and its attachments.

[0019] Figure 3 This is a schematic diagram of the front support structure;

[0020] Figure 4 This is a schematic diagram of the vehicle body support structure;

[0021] Figure 5 This is a schematic diagram showing the connection relationship between the front axle, the front wheel hub, and the front bracket;

[0022] Figure 6 This is a schematic diagram showing the connection relationship between the rear axle, the rear axle hub, and the rear bracket.

[0023] Reference numerals: 1-Front bracket, 101-First front beam, 102-Second front beam, 103-Third front beam, 104-Front support plate, 105-Front support sleeve, 2-Rear bracket, 201-First rear beam, 202-Second rear beam, 203-Third rear beam, 204-Rear support plate, 205-Rear support sleeve, 3-Body bracket, 301-Upper beam, 302-Connecting beam, 303-Head tube. 304-Upright beam, 3041-Upright tube, 3042-Reinforcing tube, 305-Lower beam, 3051-Lower support beam, 306-Mounting tube, 4-Attached bracket, 401-Attached support plate, 402-Connecting lug, 5-Front axle, 6-Rear axle, 601-Outer axle body, 6011-Drive shaft, 6012-Flywheel shaft, 602-Inner axle core, 7-Hub, 8-Front support angle iron, 9-Rear support angle iron. Detailed Implementation

[0024] A wide-tread bicycle includes a frame, a front wheel (not shown), a rear wheel (not shown), a front axle 5, and a rear axle 6. Both the front and rear wheels are automobile tires. Figure 1 As shown, the frame includes a front support 1, a rear support 2, and a body support 3 with a head tube 303. The front support 1 is rotatably connected to the head tube 303, and the rear support 2 is fixedly connected to the body support 3. In this embodiment, welding is the preferred method of fixed connection, and welding is also the preferred method of fixed connection mentioned below, which will not be repeated here. In other embodiments, other methods can of course be used to achieve the fixed connection, such as connection by fasteners (screws, pins, rivets, etc.).

[0025] Those skilled in the art will understand that automobile tires are typically fixed to the rim and hub 7 by bolts. (Reference) Figure 6In this embodiment, the hub 7 of the front wheel is mounted on the front axle 5 and rotatably connected to the front bracket 1. It should be understood that the hub 7 and the front axle 5 are relatively fixed, and the relative rotation is restricted in the circumferential direction by means of connecting keys, etc., and the circumferential direction is locked by nuts. There is a hub 7 bearing between the hub 7 and the front bracket 1.

[0026] refer to Figure 5 The rear axle 6 includes an outer axle body 601 and an inner axle core 602. The inner axle core 602 is coaxially inserted through one end of the outer axle body 601 and the two can rotate relative to each other. An auxiliary bracket 4 is fixedly connected to the rear bracket 2. The auxiliary bracket 4 is fixedly sleeved on the inner axle core 602. The wheel hub 7 of the rear wheel is sleeved on the outer axle body 601 and rotatably connected to the rear bracket 2. Similarly, the wheel hub 7 and the rear axle 6 are relatively fixed. The relative rotation is restricted in the circumferential direction by means of connecting keys, etc., and locked in the axial direction by through nuts. There is a wheel hub 7 bearing between the wheel hub 7 and the rear bracket 2.

[0027] The freewheel (not shown) is fixedly connected to the outer axle 601. Those skilled in the art should understand that bicycles are usually driven by pedaling (not shown) to rotate the chainring (not shown). The chainring and the freewheel are driven by a chain. In practical applications, pedaling can drive the freewheel and the outer axle 601 to rotate, thereby driving the rear wheel to rotate and realizing transmission. It can be seen that this utility model effectively solves the technical problems of applying automobile tires to bicycles.

[0028] Alternatively, in this embodiment, the outer shaft 601 includes a flywheel shaft 6012 and a drive shaft 6011. One end of the flywheel shaft 6012 is connected to one end of the drive shaft 6011 by fasteners (e.g., bolts), thus dividing the outer shaft 601 into two sections to avoid excessive axial length of a single shaft. The inner shaft core 602 passes through the end of the flywheel shaft 6012 away from the drive shaft 6011, and the rear wheel hub 7 is fitted onto the drive shaft 6011.

[0029] refer to Figure 3 As an alternative, in this embodiment, the front bracket 1 includes a front support plate 104 and a first front beam 101, a second front beam 102, and a third front beam 103 located in the same plane. The first front beam 101 extends along the width direction of the bicycle. The upper end of the second front beam 102 is connected to one end of the first front beam 101, and the upper end of the third front beam 103 is connected to the lower end of the second front beam 102. The lower end of the third front beam 103 is located below the middle of the first front beam 101. The connection between the first front beam 101, the second front beam 102, and the third front beam 103 is preferably welded. The three together form a structure similar to a "C" shape (or a "U" shape). The front support plate 104 is connected to the lower end of the third front beam 103. The front support plate 104 is provided with a front support sleeve 105 for supporting the front axle 5. It is easy to understand that the front support sleeve 105 and the front support plate 104 are provided with through holes to accommodate the front axle 5 and the wheel hub 7.

[0030] refer to Figure 2 The rear support 2 includes a rear support plate 204 and a first rear beam 201, a second rear beam 202, and a third rear beam 203 located in the same plane. The first rear beam 201 extends along the width direction of the bicycle. The upper end of the second rear beam 202 is connected to one end of the first rear beam 201. The upper end of the third rear beam 203 is connected to the lower end of the second rear beam 202, and the lower end of the third rear beam 203 is located below the middle of the first rear beam 201. The connection between the first rear beam 201, the second rear beam 202, and the third rear beam 203 is preferably welded. The three together form a structure similar to a "C" (or a "U"). The rear support plate 204 is connected to the lower end of the third rear beam 203. The rear support plate 204 is provided with a rear support sleeve 205 for supporting the rear axle 6. It is easy to understand that the rear support sleeve 205 and the rear support plate 204 are provided with through holes to accommodate the front axle 5 and the wheel hub 7.

[0031] In practical applications, the front support 1 and the rear support 2 are identical in shape and size, facilitating the fabrication of two sets according to the same drawing. Based on the above, in this embodiment, the auxiliary support 4 includes an auxiliary support plate 401 and connecting ears 402 fixedly disposed on both sides of the auxiliary support plate 401. The connecting ears 402 are fixedly connected to the second rear beam 202, or fixedly connected to the third rear beam 203, or simultaneously connected to both the second and third rear beams 202. It is easy to understand that the auxiliary support plate 401 has a hole coaxial with the rear support sleeve 205, so that it can be fitted onto the inner mandrel.

[0032] It should be understood that in practical applications, the second front beam 102 in the front bracket 1 and the second rear beam 202 in the rear bracket 2 should be located on the same side of the bicycle, such as both on the left or both on the right. The front wheel is on the side of the front support sleeve 105 away from the second front beam 102, and the rear wheel is on the side of the rear support sleeve 205 away from the second rear beam 202. The freewheel is located between the rear support sleeve 205 and the auxiliary bracket 4. It is worth noting that since car tires are wider than conventional bicycle tires, the front bracket 1 and rear bracket 2 are arranged in the above manner to minimize the width dimension of the bicycle.

[0033] As an alternative, the first front beam 101, the second front beam 102, the third front beam 103, the first rear beam 201, the second rear beam 202, and the third rear beam 203 are all rectangular tubes, which can reduce the overall weight while ensuring the support strength.

[0034] refer to Figures 1-3In this embodiment, a front support angle iron 8 is fixedly connected to the bottom of the front bracket 1, and a rear support angle iron 9 is fixedly connected to the bottom of the rear bracket 2. It is worth noting that after the front and rear wheels are removed, the front support angle iron 8 and the rear support angle iron 9 work together to support the entire frame, facilitating bicycle maintenance. Alternatively, the front support angle iron 8 is welded to the front support plate 104, and the rear support angle iron 9 is welded to the rear support plate 204.

[0035] refer to Figure 4 Alternatively, the frame bracket 3 includes an upper beam 301, a vertical beam 304, a lower beam 305, and a mounting tube 306 for mounting pedal axles. The upper beam 301 extends along the length of the bicycle, and a connecting beam 302 is connected to the front end of the upper beam 301. The head tube 303 is located at the front end of the connecting beam 302. The vertical beam 304 and the lower beam 305 are both connected between the upper beam 301 and the mounting tube 306. It is easy to understand that the length of the mounting tube 306 is kept as short as possible to avoid creating an excessive distance between the two pedals, which would increase the difficulty of riding.

[0036] Furthermore, the upright beam 304 includes an upright pipe 3041 and reinforcing pipes 3042 symmetrically arranged on both sides of the upright pipe 3041. The lower end of the upright pipe 3041 is fixedly connected to the mounting pipe 306, and the upper end of the upright pipe 3041 is fixedly connected to the upper beam 301. The upper end of the upright pipe 3041 extends beyond the top of the upper beam 301 for connecting the seat post of the cushion. The upper end of the reinforcing pipe 3042 is fixedly connected to the upright pipe 3041, and the lower end of the reinforcing pipe 3042 is fixedly connected to the mounting pipe 306. In this embodiment, the reinforcing pipe 3042 is formed by welding two pipes into a bent structure. In other embodiments, the reinforcing pipe 3042 can also be a single pipe, forming a triangular structure with the upright pipe 3041 and the mounting pipe 306.

[0037] The lower beam 305 includes two lower support beams 3051. The two lower support beams 3051 and the mounting pipe 306 form a triangular structure to improve the support strength.

[0038] As an alternative, in this embodiment, the upper beam 301 and the lower support beam 3051 are both rectangular tubes; the mounting tube 306, the riser tube 3041 and the reinforcing tube 3042 are all round tubes.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bicycle with wide tires, comprising a frame, a front wheel, a rear wheel, a front axle and a rear axle, the front wheel and the rear wheel are automobile tires, the frame comprises a front support, a rear support and a body support with a head tube, the front support is rotatably connected with the head tube, and the rear support is fixedly connected with the body support, characterized in that, The hub of the front wheel is sleeved on the front axle and rotationally connected with the front support, the rear axle comprises an outer axle body and an inner axle core, the inner axle core is coaxially arranged at one end of the outer axle body and can rotate relative to the outer axle body, the rear support is fixedly connected with an auxiliary support, the auxiliary support is fixedly sleeved on the inner axle core, the hub of the rear wheel is sleeved on the outer axle body and rotationally connected with the rear support, and the freewheel is fixedly connected with the outer axle body.

2. Bicycle with wide tyre according to claim 1, characterized in that, The outer axle body comprises a freewheel axle and a transmission axle, one end of the freewheel axle is connected with one end of the transmission axle through a fastener, the inner axle core is arranged at the end of the freewheel axle away from the transmission axle, and the hub of the rear wheel is sleeved on the transmission axle.

3. The wide-treaded bicycle according to claim 1, wherein The front support comprises a front support plate and first, second and third front beams in the same plane, the first front beam extends along the width direction of the bicycle, the upper end of the second front beam is connected with one end of the first front beam, the upper end of the third front beam is connected with the lower end of the second front beam, and the lower end of the third front beam is below the middle of the first front beam, the front support plate is connected with the lower end of the third front beam, and the front support plate is provided with a front support sleeve for supporting the front axle. The rear support comprises a rear support plate and first, second and third rear beams in the same plane, the first rear beam extends along the width direction of the bicycle, the upper end of the second rear beam is connected with one end of the first rear beam, the upper end of the third rear beam is connected with the lower end of the second rear beam, and the lower end of the third rear beam is below the middle of the first rear beam, the rear support plate is connected with the lower end of the third rear beam, and the rear support plate is provided with a rear support sleeve for supporting the rear axle.

4. The wide tire face bicycle of claim 3, wherein, The auxiliary support comprises an auxiliary support plate and connecting ears fixedly arranged on both sides of the auxiliary support plate, and the second rear beam and / or the third rear beam is / are fixedly connected with the connecting ears.

5. The wide tire face bicycle of claim 3, wherein, The first, second, third, first, second and third rear beams are all rectangular tubes.

6. Bicycle with wide tread according to any one of claims 1-5, characterized in that, The bicycle body support comprises an upper beam, a vertical beam, a lower beam and a mounting pipe for mounting a pedal shaft, the upper beam extends along the length direction of the bicycle, the front end of the upper beam is connected with a connecting beam, the head tube is arranged at the front end of the connecting beam, and the vertical beam and the lower beam are both connected between the upper beam and the mounting pipe.

7. The wide-treaded bicycle according to claim 6, characterized in that, The vertical beam comprises a vertical pipe and reinforcing pipes symmetrically arranged on both sides of the vertical pipe, the lower end of the vertical pipe is fixedly connected with the mounting pipe, the upper end of the vertical pipe is fixedly connected with the upper beam, and the upper end of the vertical pipe protrudes from the top of the upper beam and is used for connecting a seat pipe of a seat cushion, and the upper end of each reinforcing pipe is fixedly connected with the vertical pipe, and the lower end of each reinforcing pipe is fixedly connected with the mounting pipe.

8. Bicycle with wide tyre according to claim 7, characterised in that, The lower beam comprises two lower support beams, and the two lower support beams and the mounting pipe form a triangular structure.

9. The wide-treaded bicycle according to claim 8, characterized in that, The upper beam and the lower support beam are both rectangular tubes, and the mounting pipe, the vertical pipe and the reinforcing pipes are all circular tubes.

10. The bicycle with wide tread according to any one of claims 1-5, characterized in that, The bottom of the front support is fixedly connected with a front support angle iron, and the bottom of the rear support is fixedly connected with a rear support angle iron.

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