Auxiliary power device

Abstract

The utility model provides an auxiliary power device which is suitable for being installed on a bicycle, the bicycle is provided with a seat tube and a rear wheel, and the auxiliary power device comprises a fixing seat, a body, a driving module and two positioning rods. The fixing seat is arranged on the seat tube. The body is provided with a first side edge and a second side edge which are opposite, the first side edge is connected to the fixing seat, and the second side edge is far away from the seat tube and provided with a first outer contour. The driving module comprises a motor and a driving wheel, the center of the motor is provided with a rotating shaft, and the driving wheel covers the periphery of the motor and is suitable for contacting the rear wheel. Each positioning rod is provided with a first end and a second end which are opposite, the two first ends are connected to the second side edge, and the two second ends are rotatably connected to the two opposite ends of the rotating shaft respectively. The auxiliary power device provided by the utility model is suitable for manpower bicycles of various specifications, so that power can be provided to drive the bicycle to advance.

Description

Technical Field

[0001] This utility model relates to a power device, and more particularly to an auxiliary power device combined with a bicycle. Background Technology

[0002] Bicycles are a common mode of transportation in modern cities, used to supplement short-distance travel. Since cycling does not produce carbon emissions, it is environmentally friendly and can also increase the user's exercise. However, human-powered bicycles are not suitable for riding on inclines, so electric bicycles were developed. These combine a motor and a battery into the bicycle, using electricity to power the motor and assist in the bicycle's movement.

[0003] However, existing electric bicycles are manufactured to specific specifications, which users cannot modify. When an electric bicycle is damaged, it must be sent back to the original factory or a designated place for repair. Therefore, it has disadvantages such as high price and difficulty in repair. As a result, electric bicycles with existing technology are difficult to popularize in ordinary households. Utility Model Content

[0004] This invention provides an auxiliary power device suitable for various sizes of human-powered bicycles, thereby providing power to propel the bicycle forward.

[0005] This utility model discloses an auxiliary power device suitable for installation on a bicycle, which has a seatpost, seat tube, rear fork, and rear wheel. The auxiliary power device includes a mounting base, a main body, a drive module, and two positioning rods. The mounting base is disposed on the seatpost, seat tube, or rear fork. The main body has opposing first and second sides; the first side is connected to the mounting base, and the second side is away from the seatpost, seat tube, or rear fork and has a first outer contour. The drive module includes a motor and a drive wheel; the motor has a central rotating shaft, and the drive wheel surrounds the motor and is adapted to contact the rear wheel. Each positioning rod has opposing first and second ends; the two first ends are connected to the second side, and the two second ends are rotatably connected to opposing ends of the rotating shaft. When the drive module is in a stationary mode, the two positioning rods are in contact with the first outer contour. When the drive module is in driving mode, the motor drives the drive wheel to rotate relative to the two positioning rods in a first direction, thereby driving the rear wheel to rotate in a second direction opposite to the first direction. Simultaneously, the drive wheel rubs against the rear wheel to cause the two positioning rods to unfold beyond the first outer contour.

[0006] In an embodiment of this utility model, the fixed seat has a sleeve portion and an extension portion. The sleeve portion is sleeved on the seat tube, and the extension portion is formed on the sleeve portion and located above the rear wheel.

[0007] In an embodiment of this utility model, the body has a connecting rod disposed on the second side, and the two first ends of the two positioning rods are rotatably connected to the connecting rod.

[0008] In an embodiment of this utility model, the first outer contour forms an abutment portion, and the shape of the abutment portion corresponds to the shape of the plurality of positioning rods.

[0009] In an embodiment of this utility model, in braking mode, the motor locks the rotating shaft and the drive wheel, or the drive wheel rotates freely relative to the plurality of positioning rods.

[0010] In an embodiment of this utility model, the drive wheel portion protrudes from the body.

[0011] This utility model discloses an auxiliary power device suitable for installation on a bicycle, which has a head tube and a front wheel. The auxiliary power device includes a mounting base, a main body, a drive module, and two positioning rods. The mounting base is disposed on the head tube or front fork. The main body has opposing first and second sides. The first side is connected to the mounting base, and the second side is away from the head tube and front fork and has a second outer contour. The drive module includes a motor and a drive wheel. The motor has a central rotating shaft, and the drive wheel surrounds the motor and is adapted to contact the front wheel. The two positioning rods each have opposing first and second ends. The two first ends are connected to the second side, and the two second ends are rotatably connected to opposing ends of the rotating shaft. When the drive module is in a stationary mode, the two positioning rods conform to the second outer contour of the main body. When the drive module is in driving mode, the motor drives the drive wheel to rotate in a first direction relative to the two positioning rods, thereby driving the front wheel to rotate in a second direction opposite to the first direction. At the same time, the drive wheel rubs against the front wheel to drive the main body to rotate in the second direction.

[0012] In an embodiment of this utility model, the fixing seat has a sleeve portion and an extension portion. The sleeve portion is sleeved on the head tube, and the extension portion is formed on the sleeve portion and located above the front wheel.

[0013] In an embodiment of this utility model, the body has a connecting rod, which is disposed on the second side and the two first ends of the two positioning rods are connected to the connecting rod.

[0014] In an embodiment of this utility model, the second outer contour forms a stop surface, and the stop surface is located on the two positioning rods.

[0015] In an embodiment of this utility model, in braking mode, the motor locks the rotating shaft and the drive wheel, or the drive wheel rotates freely relative to the plurality of positioning rods.

[0016] In an embodiment of this utility model, the drive wheel portion protrudes from the body.

[0017] Based on the above, the auxiliary power device of this utility model is suitable for installation on the seat post or head tube of a bicycle to contact the rear wheel or front wheel. In the drive mode of the drive module, the motor drives the drive wheel to rotate in a first direction, thereby driving the rear wheel or front wheel to rotate in a second direction opposite to the first direction. At the same time, the drive wheel generates a positive force applied to the rear wheel or front wheel during rotation to enhance the friction between the two and avoid slippage between the drive wheel and the rear wheel or front wheel, so as to maintain the power transmission efficiency of the auxiliary power device. Attached Figure Description

[0018] The accompanying drawings are included to further illustrate the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] Figure 1A This is a plan view of an auxiliary power device integrated into a bicycle according to an embodiment of this case;

[0020] Figure 1B This is a block structure diagram of the auxiliary power unit in this case;

[0021] Figure 1C yes Figure 1A A three-dimensional schematic diagram of the drive module of the auxiliary power unit;

[0022] Figure 2A yes Figure 1A A plan view of the auxiliary power unit switching to stationary mode;

[0023] Figure 2B yes Figure 1A A plan view showing the auxiliary power unit switching to drive mode;

[0024] Figure 3 This is a plan view of an auxiliary power device integrated into a bicycle according to another embodiment of this case;

[0025] Figure 4A yes Figure 3 A plan view of the auxiliary power unit switching to stationary mode;

[0026] Figure 4B yes Figure 3 A plan view showing the auxiliary power unit switching to drive mode.

[0027] Explanation of icon numbers

[0028] 100, 100A: Auxiliary power unit;

[0029] 110, 110a: Fixed base;

[0030] 111, 111a: Socket part;

[0031] 112, 112a: Extensions;

[0032] 120, 120a: ontology;

[0033] 121, 121a: Connecting rod;

[0034] 130, 130a: Driver modules;

[0035] 131, 131a: Motor;

[0036] 1311, 1311a: Rotation axis;

[0037] 132, 132a: Drive wheels;

[0038] 140, 140a: Positioning rod;

[0039] 150: Control core;

[0040] 160: Sensor;

[0041] 170: Storage battery;

[0042] 200: bicycle;

[0043] 210: Seat tube;

[0044] 220: Rear wheel;

[0045] 230: Head tube;

[0046] 240: Front wheel;

[0047] 250: Riser;

[0048] 260: Backwards fork;

[0049] 270: Front fork;

[0050] A: Angle;

[0051] A1: First included angle;

[0052] A2: The second included angle;

[0053] C1: First outer contour;

[0054] C2: Second outer contour;

[0055] D1: First direction;

[0056] D2: Second direction;

[0057] NF: Normal force;

[0058] E1, E2: Terminals;

[0059] S1: First side;

[0060] S2: Second side. Detailed Implementation

[0061] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element reference numerals are used in the drawings and description to denote the same or similar parts.

[0062] Figure 1A This is a plan view of an auxiliary power device integrated into a bicycle according to an embodiment of this case. Figure 1B This is a block structure diagram of the auxiliary power unit in this case. Figure 1C yes Figure 1A A three-dimensional schematic diagram of the drive module of the auxiliary power unit. Figure 2A yes Figure 1A A plan view showing the auxiliary power unit switching to stationary mode. Figure 2B yes Figure 1A A plan view showing the auxiliary power unit switching to drive mode.

[0063] refer to Figure 1A The auxiliary power unit 100 of this invention is suitable for installation on any bicycle 200. After activation, the auxiliary power unit 100 provides power to the front or rear wheel of the bicycle 200, thereby rotating the front or rear wheel to assist in bicycle movement. Furthermore, the auxiliary power unit 100 is detachable; when damaged, it can be directly removed for repair or replacement. In addition, the speed or torque specifications of the auxiliary power unit 100 can be changed according to riding needs, increasing the flexibility of its use. In short, any bicycle can be fitted with an auxiliary power unit 100 of appropriate specifications depending on different riding environments.

[0064] refer to Figures 1A to 1C In this case, the auxiliary power unit 100 is installed on a bicycle 200, and the bicycle 200 has a seat post 210, a rear wheel 220, a seat tube 250, and a rear seat fork 260. The auxiliary power unit 100 includes a mounting base 110, a body 120, a drive module 130, two positioning rods 140, a control core 150, a sensor 160, and a battery 170.

[0065] In the embodiments of this invention, sensor 160 is a speed sensor, torque sensor, or step frequency sensor, and this invention is not limited to this.

[0066] The mounting bracket 110 is mounted on the seat post 210, seat post 250, or rear seat fork 260 of the bicycle 200. Figure 1AThe example shown is the seat tube 210. In detail, the fixed seat 110 has a sleeve portion 111 and an extension portion 112. The sleeve portion 111 is sleeved on the seat tube 210, and the extension portion 112 is formed on one side of the sleeve portion 111 and is suspended above the rear wheel 220.

[0067] refer to Figure 1A and Figure 1C The body 120 has a first side S1 and a second side S2, the first side S1 is connected to the fixed base 110, and the second side S2 is away from the base tube 210 and has a first outer contour C1.

[0068] The drive module 130 includes a motor 131 and a drive wheel 132. The motor 131 has a central rotating shaft 1311. The drive wheel 132 covers the periphery of the motor 131 and is adapted to contact the rear wheel 220. Part of the drive wheel 132 protrudes from the body 120 to contact the rear wheel 220.

[0069] In addition, the first side S1 of the main body 120 is an extension 112 pivotally connected to the fixed base 110. This means that the main body 120 can adjust the included angle according to the external dimensions of the seat tube 210 and the rear wheel 220, so that the drive wheel 132 of the drive module 130 can closely contact the rear wheel 220 to avoid slippage, freewheeling or poor power transmission efficiency.

[0070] Each positioning rod 140 has a first end E1 and a second end E2. The two first ends E1 of the two positioning rods 140 are connected to the second side S2 of the body 120, and the two second ends E2 are rotatably connected to the two opposite ends of the rotating shaft 1311.

[0071] In detail, the body 120 has a connecting rod 121 disposed on the second side S2 of the body 120, and the two first ends E1 of the two positioning rods 140 are rotatably connected to the connecting rod 121. Furthermore, the first outer contour C1 forms a stop portion, and the shape of the stop portion corresponds to the shape of the two positioning rods 140.

[0072] refer to Figure 1A and Figure 2B The control core 150 is configured in the main body 120 and coupled to the motor 131. The sensor 160 is coupled to the control core 150, and the battery 170 is configured in the main body 120 and coupled to the control core 150. In practical applications, after receiving a start command, the control core 150 connects the battery 170 and the motor 131, allowing the battery 170 to output current to the motor 131. The sensor 160 is installed anywhere on the bicycle 200 and is used to detect information about the rear wheel 220, such as the rotation speed. The rotation speed is then transmitted back to the control core 150, allowing the control core 150 to dynamically adjust the rotation speed of the motor 131 to cope with level, downhill, or uphill sections.

[0073] refer to Figure 1A , Figure 1B and Figure 2A When the drive module 130 is in the static mode, the control core 150 does not receive a start command, and the battery 170 does not supply power to the motor 131. Therefore, the two positioning rods 140 fit into the first outer contour C1 of the second side S2 of the body 120, that is, the two positioning rods 140 coincide with the abutment part.

[0074] refer to Figure 1A , Figure 1B and Figure 2B When the drive module 130 is in drive mode, the control core 150 receives a start command and controls the battery 170 to supply power to the motor 131. Therefore, the motor 131 drives the drive wheel 132 to rotate relative to the second positioning rod 140 in the first direction D1, and the drive wheel 132 drives the rear wheel 220 to rotate in the second direction D2 opposite to the first direction D1. At the same time, the drive wheel 132 rubs against the rear wheel 220 to drive the second positioning rod 140 to unfold on the first outer contour C1 of the body 120. Therefore, there is an included angle A between the second positioning rod 140 and the first outer contour C1.

[0075] In addition, the friction between the drive wheel 132 and the rear wheel 220 will cause the second positioning rod 140 to extend out of the body 120. As the included angle A increases, the positive force NF exerted by the drive wheel 132 on the rear wheel 220 also increases. The positive force NF helps the drive wheel 132 and the rear wheel 220 to fit tightly together, ensuring that the bicycle can move forward normally. Furthermore, the greater the power generated by the drive wheel 132, the greater the positive force NF exerted on the rear wheel 220.

[0076] refer to Figure 1A and Figure 1B In braking mode, the control core 150 controls the motor 131 to lock the rotating shaft 1311 and the drive wheel 132, preventing the drive wheel 132 from rotating freely relative to the second end E2 of the two positioning rods 140, allowing the rear wheel 220 to continuously rub against the drive wheel 132 to achieve the braking effect. Alternatively, the control core 150 disconnects the battery 170 from the motor 131, allowing the drive wheel 132 and the rotating shaft 1311 to rotate freely relative to the second end E2 of the two positioning rods 140, allowing the rear wheel 220 to continuously drive and rub against the drive wheel 132 to achieve the braking effect.

[0077] refer to Figure 3 and Figure 1B In this embodiment, the auxiliary power device 100A is installed on the head tube 230, front wheel 240 and front fork 270 of the bicycle 200. The auxiliary power device 100A includes a mounting base 110a, a body 120a, a drive module 130a and two positioning rods 140a.

[0078] Mount 110a is mounted on head tube 230 or fork 270. Figure 3 The head tube 230 is shown as an example. In detail, the mounting base 110a has a sleeve portion 111a and an extension portion 112a. The sleeve portion 111a is sleeved on the head tube 230, and the extension portion 112a is formed on the sleeve portion 111a and is located above the front wheel 240.

[0079] The body 120a has a first side S1 and a second side S2 opposite to each other. The first side S1 is rotatably connected to the extension 112a of the fixed base 110a, and the second side S2 is away from the head tube 230 and has a second outer contour C2.

[0080] The drive module 130a includes a motor 131a and a drive wheel 132a. The motor 131a has a central rotating shaft 1311a, and the drive wheel 132a covers the periphery of the motor 131a and is adapted to contact the front wheel 240.

[0081] Each positioning rod 140a has a first end E1 and a second end E2. The two first ends E1 of the two positioning rods 140a are connected to the second side S2 of the body 120a, and the two second ends E2 are rotatably connected to the two opposite ends of the rotating shaft 1311a. The drive wheel 132a is rotatably connected to the second ends E2 of each positioning rod 140a, and a portion of the drive wheel 132a protrudes from each positioning rod 140a to contact the front wheel 240.

[0082] In detail, the body 120a has a connecting rod 121a disposed on the second side S2 of the body 120a, and the two first ends E1 of the two positioning rods 140a are connected to the second connecting rod 122a. The second outer contour C2 forms a stop surface, which is located on the two positioning rods 140a. In this embodiment, the two positioning rods 140a are locked to the connecting rod 121a, so the two positioning rods 140a continuously abut against the stop surface of the second outer contour C2.

[0083] refer to Figure 3 , Figure 1B and Figure 4A When the drive module 130a is in static mode, the control core 150 does not receive a start command, the battery 170 does not supply power to the motor 131a, and the two positioning rods 140a are in contact with the second outer contour C2 of the body 120a. In addition, there is a first included angle A1 between the body 120a and the fixed base 110a.

[0084] refer to Figure 3 , Figure 1B and Figure 4BWhen the drive module 130a is in drive mode, the motor 131a drives the drive wheel 132a to rotate relative to the second positioning rod 140a in the first direction D1, thereby driving the front wheel 240 to rotate in the second direction D2 opposite to the first direction D1. At the same time, the drive wheel 132a rubs against the front wheel 240 to drive the first side S1 of the body 120a to rotate relative to the extension 112a in the second direction D2. Therefore, in drive mode, there is a second angle A2 between the body 120a and the fixed seat 110a, which is smaller than the first angle A1.

[0085] In addition, the friction between the drive wheel 132a and the front wheel 240 will cause the main body 120a and the two positioning rods 140a to rotate relative to the fixed seat 110a, switching from the first included angle A1 to the second included angle A2. As the angle decreases, the positive force NF applied by the drive wheel 132a to the front wheel 240 also increases. The positive force NF helps the drive wheel 132a and the front wheel 240 to fit tightly together, ensuring that the bicycle can move forward normally. Furthermore, the greater the power generated by the drive wheel 132a, the greater the positive force NF applied to the front wheel 240.

[0086] refer to Figure 3 and Figure 1B In braking mode, the control core 150 controls the motor 131a to lock the drive wheel 132a and the rotating shaft 1311a, preventing the drive wheel 132a from rotating freely relative to the second end E2 of the two positioning rods 140a. This allows the front wheel 240 to continuously rub against the drive wheel 132a to achieve the braking effect. Alternatively, the control core 150 disconnects the battery 170 from the motor 131a, allowing the drive wheel 132a and the rotating shaft 1311a to rotate freely relative to the second end E2 of the two positioning rods 140a. This allows the rear wheel 220 to continuously drive and rub against the drive wheel 132a to achieve the braking effect.

[0087] In summary, the auxiliary power unit of this invention is suitable for installation on the seat post or head tube of a bicycle to contact the rear wheel or front wheel. In drive mode, the motor drives the drive wheel to rotate in a first direction, thereby driving the rear wheel or front wheel to rotate in a second direction opposite to the first direction. At the same time, the drive wheel generates a positive force applied to the rear wheel or front wheel during rotation to enhance the friction between them and prevent slippage between the drive wheel and the rear wheel or front wheel, thus maintaining the power transmission efficiency of the auxiliary power unit.

Claims

1. An auxiliary power device suitable for installation on a bicycle, said bicycle having a seat post, a seat tube, a rear fork, and a rear wheel, characterized in that, The auxiliary power unit includes: A fixed seat is disposed on the seat tube, riser tube, or rear upper fork; The body has a first side and a second side, the first side being connected to the fixed base, and the second side being away from the seat tube, the upright tube, or the rear upper fork and having a first outer contour. A drive module includes a motor and a drive wheel. The motor has a central rotating shaft, and the drive wheel surrounds the motor and is adapted to contact the rear wheel. Two positioning rods, each positioning rod having a first end and a second end opposite to each other, the two first ends being connected to the second side, and the two second ends being rotatably connected to opposite ends of the rotating shaft respectively; When the drive module is in a stationary mode, the two positioning rods are in contact with the first outer contour. When the drive module is in a driving mode, the motor drives the drive wheel to rotate relative to the two positioning rods in a first direction, thereby driving the rear wheel to rotate in a second direction opposite to the first direction. At the same time, the drive wheel rubs against the rear wheel to drive the two positioning rods to unfold on the first outer contour.

2. The auxiliary power device according to claim 1, characterized in that, The mounting base has a sleeve portion and an extension portion. The sleeve portion is fitted onto the seat tube, and the extension portion is formed on the sleeve portion and located above the rear wheel.

3. The auxiliary power device according to claim 1, characterized in that, The body has a connecting rod disposed on the second side, and the two first ends of the two positioning rods are rotatably connected to the connecting rod.

4. The auxiliary power device according to claim 1, characterized in that, The first outer contour forms a stop portion, and the shape of the stop portion corresponds to the shape of the plurality of positioning rods.

5. The auxiliary power device according to claim 1, characterized in that, In braking mode, the drive module locks the rotating shaft and the drive wheel, or the drive wheel rotates freely relative to the plurality of positioning rods.

6. The auxiliary power device according to claim 1, characterized in that, The drive wheel portion protrudes from the body.

7. An auxiliary power device, characterized in that, Suitable for mounting on a bicycle having a head tube, a fork, and a front wheel, the auxiliary power unit includes: A mounting base is disposed on the head tube; The body has a first side and a second side, the first side being connected to the fixed base, and the second side being away from the head tube and the fork and having a second outer contour. A drive module includes a motor and a drive wheel. The motor has a central rotating shaft, and the drive wheel surrounds the motor and is adapted to contact the front wheel. Two positioning rods, each positioning rod having a first end and a second end opposite to each other, the two first ends being connected to the second side, and the two second ends being rotatably connected to opposite ends of the rotating shaft respectively; When the drive module is in stationary mode, the two positioning rods are in contact with the second outer contour of the body. When the drive module is in drive mode, the motor drives the drive wheel to rotate relative to the two positioning rods in a first direction, thereby driving the front wheel to rotate in a second direction opposite to the first direction. At the same time, the drive wheel rubs against the front wheel to drive the body to rotate in the second direction.

8. The auxiliary power device according to claim 7, characterized in that, The mounting base has a sleeve portion and an extension portion. The sleeve portion is fitted onto the head tube, and the extension portion is formed on the sleeve portion and located above the front wheel.

9. The auxiliary power device according to claim 7, characterized in that, The body has a connecting rod disposed on the second side and the two first ends of the two positioning rods are connected to the connecting rod.

10. The auxiliary power device according to claim 7, characterized in that, The second outer contour forms a stop surface, which is located on the two positioning rods.

11. The auxiliary power device according to claim 7, characterized in that, In braking mode, the drive module locks the rotating shaft and the drive wheel, or the drive wheel rotates freely relative to the plurality of positioning rods.

12. The auxiliary power device according to claim 7, characterized in that, The drive wheel portion protrudes from the body.

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