Riding power assisting device

Abstract

The invention is suitable for the technical field of riding assistance. The invention discloses a riding power assisting device which comprises a power assisting body, a power assisting wheel assembly connected with the power assisting body, a fixed connecting part fixed to a bicycle body and a control circuit controlling the power assisting wheel assembly to work, and the power assisting body is provided with a battery fixing frame and an adjusting mechanism for adjusting contact pressure between the power assisting wheel assembly and wheels. The power-assisted wheel assembly comprises a power-assisted wheel for providing wheel driving power for the wheels and a driving motor for driving the power-assisted wheel to rotate. During working, the adjusting mechanism for adjusting the position of the power-assisted wheel is controlled by the control circuit to move, the angle between the bicycle and the horizontal plane and the rotating speed of the wheels can be combined, the pressure between the power-assisted wheel and the rotating speed of the power-assisted wheel can be adjusted, the matched rotating speed is automatically output for power assistance when power assistance is needed, and accurate power assistance for riding can be achieved; and the loss of riding pleasure can be avoided, and the use experience is improved.

Description

Technical Field

[0001] This invention relates to the field of cycling assistance technology, and more particularly to a cycling assistance device. Background Technology

[0002] Cycling is widely used as both exercise equipment and an environmentally friendly mode of commuting. For cycling enthusiasts, it offers both physical fitness and the opportunity to meet like-minded friends. Therefore, more and more people are becoming interested in cycling.

[0003] Current cycling tools are mainly unpowered bicycles. Users' riding environments and paces vary each time they ride, especially on unpaved roads where high resistance significantly increases the difficulty. Therefore, bicycle assist devices have emerged, allowing users to activate them on challenging or strenuous sections to conserve energy and reduce difficulty. However, these devices require rider control, necessitating simultaneous effort, directional control, and attention to the assist function, which can be inconvenient. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide a cycling assist device that can avoid the difficulty of control for cyclists while riding, improve the accuracy of assistance while riding, and achieve both assistance and the enjoyment of riding.

[0005] To address the aforementioned technical problems, the present invention provides a cycling assistance device. The cycling assistance device includes an assistance body, an assistance wheel assembly connected to the assistance body, a fixed connection component fixed to the bicycle frame, and a control circuit for controlling the operation of the assistance wheel assembly. The assistance body is provided with a battery mounting bracket and an adjustment mechanism for adjusting the contact pressure between the assistance wheel assembly and the wheel. The assistance wheel assembly includes an assistance wheel that provides wheel-driven power to the wheel and a drive motor that drives the assistance wheel to rotate.

[0006] As a preferred technical solution, the adjustment mechanism includes an adjustment drive component and a transmission assembly controlled by a control circuit. The transmission assembly converts the rotation of the adjustment drive component into the movement of a fixed component, one end of which is rotatably connected to the battery mounting bracket via an adjustment shaft, thereby changing the friction between the booster wheel and the wheel connected to the other end of the fixed component.

[0007] As a preferred technical solution, the transmission assembly includes a worm gear connected to the shaft of the geared motor and a worm wheel that is threadedly engaged with one end of the adjusting component. The worm gear meshes with the worm wheel, and the other end of the adjusting component is connected to a fixed component of the fixed assist wheel assembly. The adjusting component extends and retracts when the worm wheel rotates in both directions.

[0008] As a preferred technical solution, the adjusting component is fitted with an elastic component that adjusts the rotational allowance of the fixing component.

[0009] As a preferred technical solution, the elastic component includes a compression spring.

[0010] As a preferred technical solution, the fixing component includes a rotating part that is rotatably connected to the assist body and a fixing part that fixes the assist wheel assembly, as well as a connecting part that connects the rotating part and the fixing part. The rotating part has two protrusions, and a clearance groove is formed between the two protrusions. The connecting part has two connectors, each connector having its two ends connected to the rotating part and the fixing part respectively. A clearance hole is provided between the two connectors. The connector has a clearance groove to prevent damage to the electrical signal transmission during adjustment.

[0011] As a preferred technical solution, the adjustment drive component includes a geared motor fixed to a fixed frame, the geared motor including a motor and a reduction gearbox or reduction gear set.

[0012] As a preferred technical solution, the power wheel includes a hub and a friction wheel disposed on the hub, as well as a fixed shaft connected to the hub via a bearing.

[0013] As a preferred technical solution, the friction surface of the friction wheel is provided with a friction structure to increase friction.

[0014] As a preferred technical solution, the friction surface is provided with an annular groove that contacts the wheel mating surface.

[0015] As a preferred technical solution, the annular groove is provided with a number of protrusions, and the grooves are formed between adjacent protrusions.

[0016] As a preferred technical solution, water guide channels are provided on both sides of the annular groove, and the water guide channels are connected to each groove.

[0017] As a preferred technical solution, the depth of the water guide channel is greater than that of the groove.

[0018] As a preferred technical solution, the assistive body is also provided with a baffle that can prevent the assistive wheel from transferring objects.

[0019] As a preferred technical solution, the riding assist device is also equipped with a pressure sensor connected to the control circuit to detect the pressure between the assist wheel and the wheel.

[0020] As a preferred technical solution, the riding assist device is also equipped with a sensor connected to the control circuit to detect wheel speed and / or pedaling acceleration. The control circuit controls the speed of the drive motor based on the wheel speed and / or pedaling acceleration.

[0021] As a preferred technical solution, the cycling assist device is also equipped with an angle sensor connected to the control circuit to detect the angle between the bicycle and the horizontal plane, and determines the output speed of the control drive motor based on the size of the angle between the bicycle and the horizontal plane.

[0022] This invention discloses a cycling assistance device, including an assistance body, an assistance wheel assembly connected to the assistance body, a fixed connection component fixed to the bicycle frame, and a control circuit for controlling the operation of the assistance wheel assembly. The assistance body is equipped with a battery mounting bracket and an adjustment mechanism for adjusting the contact pressure between the assistance wheel assembly and the wheel. The assistance wheel assembly includes an assistance wheel that provides wheel power to the wheel and a drive motor that drives the assistance wheel to rotate. During operation, the control circuit controls the movement of the adjustment mechanism, which can adjust the pressure between the assistance wheel and the wheel and the speed of the assistance wheel based on the angle between the bicycle and the horizontal plane and the speed of the wheel. It automatically outputs a matching speed to provide assistance when needed, thus providing assistance to the rider while avoiding the loss of riding pleasure and improving the user experience. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the description only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of an embodiment of a cycling assist device.

[0025] Figure 2 Another structural schematic diagram of an embodiment of a cycling assist device.

[0026] Figure 3 This is another structural schematic diagram of an embodiment of a cycling assist device.

[0027] Figure 4 A schematic diagram of an embodiment of the power wheel assembly and adjustment mechanism.

[0028] Figure 5 This is another structural diagram of the power wheelset and adjustment mechanism.

[0029] The realization of the objectives, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The claims of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.

[0031] It should be understood that, in the description of the embodiments of the present invention, all directional indicating terms, such as "up," "down," "left," "right," "front," and "back," indicate the orientation or positional relationship based on the orientation and positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product is in use. These terms are merely for the purpose of simplifying the description of the present invention and do not explicitly or implicitly suggest that the device, element, or component referred to must have a specific orientation or specific orientational structure, and should not be construed as a limitation of the present invention. They are only used to explain the relative positional relationships and movements between the components shown in the accompanying drawings. When this specific orientation changes, the directional indication may also change accordingly.

[0032] Furthermore, in this invention, ordinal numbers such as "first" and "second" are used for distinguishing purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, the features referred to as "first" and "second" may explicitly or implicitly include at least one of those technical features. In the description of this invention, "a plurality of" means at least two, i.e., two or more, unless otherwise explicitly defined; "at least one" means one or more.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-in" should be interpreted broadly. For example, they can refer to a relatively fixed positional relationship between components, or a physically fixed connection between components; they can be detachable connections or integral structures; they can be mechanical connections or electrical signal connections; they can be direct connections or indirect connections through intermediate media or components; they can refer to the internal communication of two elements or the interaction between two elements. Unless otherwise explicitly limited in the specification, other interpretations will not achieve the corresponding functions or effects. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0034] If the controllers or control circuits involved in this invention are conventional control technologies or units for those skilled in the art, such as the control circuits of the controllers, they can be implemented by those skilled in the art using existing methods, such as simple programming. Regarding software or programs that work with hardware to achieve control results, unless the description provides a detailed explanation of the control process of the software or programs involved, this pertains to the use of existing technology or conventional techniques for those skilled in the art. The power supply also employs existing technology in the art. Furthermore, since the main inventive aspect of this invention lies in the improvement of the mechanical device, this invention will not provide a detailed explanation of the specific circuit control relationships and circuit connections.

[0035] This invention discloses many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0036] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0037] like Figures 1-5 As shown, the present invention provides an embodiment of a cycling assist device.

[0038] The cycling assist device includes an assist body 1, an assist wheel assembly 2 connected to the assist body 1, a fixed connection component 4 fixed to the bicycle frame, and a control circuit (not shown in the figure) for controlling the operation of the assist wheel assembly 2. The assist body 1 is provided with a battery mounting bracket 11 and an adjustment mechanism 12 for adjusting the contact pressure between the assist wheel assembly 2 and the wheel. The assist wheel assembly 2 includes an assist wheel 21 that provides wheel power to the wheel and a drive motor (not shown in the figure) that drives the assist wheel to rotate.

[0039] Specifically, the battery mounting bracket 11 has a cavity 110 for fixing the battery or battery pack. The adjustment mechanism 12 includes an adjustment mounting bracket 121 connected to the battery mounting bracket 11, an adjustment drive component 122 controlled by a control circuit, and a transmission assembly 22. The transmission assembly converts the rotation of the adjustment drive component into the movement of a fixed component, one end of which is rotatably connected to the battery mounting bracket via an adjustment shaft, thereby changing the friction between the assist wheel and the wheel connected to the other end of the fixed component. The adjustment drive component 12 includes a reduction motor fixed to the mounting bracket 121, which includes a motor 1221 and a reduction gearbox or reduction gear set 1222.

[0040] The transmission assembly 123 includes a worm gear 1231 connected to the shaft of the reduction motor and a worm wheel 1233 threadedly engaged with one end of the adjusting component 1232. The worm gear 1233 meshes with the worm wheel 1231. The other end of the adjusting component 1232 is connected to the fixing component 22 of the fixed assist wheel assembly 21. When the worm wheel 1231 rotates forward and backward, the adjusting component 1232 extends and retracts. The adjusting component 1224 drives the fixing component 22, one end of which is rotatably connected to the battery mounting bracket 11 via the shaft 23, to rotate, thereby increasing the distance between the assist wheel 21 at the other end of the fixing component 22 and the wheel.

[0041] The fixing component 22 includes a rotating part 221 rotatably connected to the power assist body 1 and a fixing part 222 fixing the power assist wheel assembly 21, as well as a connecting part 223 connecting the rotating part 221 and the fixing part 222. The rotating part 221 has two protrusions, and a clearance groove 2211 is formed between the two protrusions. The connecting part 223 has two connecting members (not shown in the figure), each connecting member is connected to the rotating part 221 and the fixing part 222 at both ends, and a clearance hole 2233 is provided between the two connecting members. The connecting member 223 has a clearance groove 2231 to prevent damage to the electrical signal transmission during adjustment. If necessary, the adjusting component 1232 is fitted with an elastic component to adjust the rotational allowance of the fixing component 22, which can maintain the effect of the road surface on the friction between the wheel and the power assist wheel 21 in the power assist state. This elastic component includes a compression spring 132.

[0042] The power steering wheel 21 includes a hub (not shown in the attached drawing) and a friction wheel 212 disposed on the hub, as well as a fixed shaft (not shown in the attached drawing) connected to the hub via a bearing (not shown in the attached drawing). The friction surface of the friction wheel 212 is provided with a friction structure to increase friction. This friction structure includes an annular groove 212 on the friction surface of the friction wheel 212. The annular groove 212 can increase the contact area with the wheel mating surface when power is applied, thereby increasing the friction between the two and preventing slippage between the wheel and the power steering wheel when greater power is required, resulting in poor power steering effect.

[0043] As needed, the annular groove is provided with a plurality of protrusions 2122, and grooves 2122 are formed between adjacent protrusions 2121. Water guide grooves 2123 are provided on both sides of the annular groove 212, and the water guide grooves 2123 communicate with each groove 2122. The depth of the water guide groove 2123 is greater than that of the groove 2122, which allows water to be quickly discharged when riding on wet surfaces, increasing the friction force between the friction wheel 212 and the wheel.

[0044] As needed, the assist body 1 is also provided with a baffle 3 that can prevent the assist wheel 21 from transferring objects off the wheel.

[0045] To ensure more precise adjustment during assist, the riding assist device is also equipped with a pressure sensor (not shown in the attached figure) connected to the control circuit to detect the pressure between the assist wheel 21 and the wheel. During adjustment, when the pressure sensor detects that the pressure between the assist wheel and the wheel is at a preset threshold, the control adjustment mechanism stops working, so that the assist wheel 21 and the wheel maintain an appropriate pressure, avoiding the loss of assist energy due to friction between the assist wheel 21 and the wheel when the pressure is too high, thus reducing the assist efficiency.

[0046] To ensure timely intervention when assistance is needed and improve assist accuracy, the cycling assist device also includes a sensor (not shown in the attached diagram) connected to the control circuit to detect wheel speed and / or pedaling acceleration. This control circuit controls the drive motor speed based on the wheel speed and / or pedaling acceleration, i.e., the speed at which assistance is provided. This assistance speed is typically set lower than the wheel speed to prevent situations where riders don't need to exert effort during assistance, thus increasing the enjoyment of cycling. For example, if the wheel speed exceeds the set value, it indicates that no assistance is needed, and the assist wheel does not engage. Conversely, if the wheel speed exceeds the set value, it indicates high riding resistance, and the assist wheel applies force to the wheel, reducing the effort required and lessening the burden on the rider. This achieves precise assistance while maintaining the enjoyment of cycling, improving the user experience.

[0047] As needed, the cycling assist device also includes an angle sensor (not shown in the attached diagram) connected to the control circuit to detect the angle between the bicycle and the horizontal plane. Based on the angle, it first determines whether assist is needed, i.e., whether the adjustment mechanism and assist wheel are working. When working, it controls the motor to operate at a linear speed not exceeding the wheel speed. This angle sensor can combine wheel speed and / or pedaling acceleration to control the drive motor speed. For example, it can first detect the bicycle's state. When the angle between the bicycle and the horizontal plane is greater than a certain angle, and the wheel speed is less than a set value, it is determined that resistance intervention is needed. The control circuit then controls the adjustment mechanism to bring the assist wheel into contact with the wheel. When the pressure sensor reaches a preset value, the assist wheel position is fixed, and its linear speed is controlled to rotate at a speed not exceeding the wheel's linear speed. When the angle between the bicycle and the horizontal plane is less than the preset angle, and the wheel speed is not less than the set value, it indicates that assist is needed. With the cooperation of the adjustment mechanism, the assist wheel is protected to disengage from the wheel.

[0048] During operation, the control circuit controls the movement of the adjustment mechanism. It can adjust the pressure between the assist wheel and the wheel and the speed of the assist wheel by combining the angle between the bicycle and the horizontal plane and the speed of the wheel. It automatically outputs the matching speed to provide assistance when assistance is needed. This can achieve precise assistance for riding, while avoiding the loss of riding pleasure and improving the user experience.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cycling assist device, characterized in that, The device includes a power assist body, a power assist wheel assembly connected to the power assist body, a fixed connection component fixed to the bicycle frame, and a control circuit for controlling the operation of the power assist wheel assembly. The power assist body is equipped with a battery mounting bracket and an adjustment mechanism for adjusting the contact pressure between the power assist wheel assembly and the wheel. The power assist wheel assembly includes a power assist wheel that provides wheel power to the wheel and a drive motor that drives the power assist wheel to rotate.

2. The cycling assist device according to claim 1, characterized in that, The adjustment mechanism includes an adjustment drive component and a transmission assembly controlled by a control circuit. The transmission assembly converts the rotation of the adjustment drive component into the movement of a fixed component, one end of which is rotatably connected to the battery mounting bracket via an adjustment shaft, thereby changing the friction between the booster wheel and the wheel, which is connected to the other end of the fixed component.

3. The cycling assist device according to claim 2, characterized in that, The transmission assembly includes a worm gear connected to the shaft of the geared motor and a worm wheel that is threadedly engaged with one end of the adjusting component. The worm gear meshes with the worm wheel, and the other end of the adjusting component is connected to a fixed component of the fixed assist wheel assembly. The adjusting component extends and retracts when the worm wheel rotates in both directions.

4. The cycling assist device according to claim 3, characterized in that, The adjusting component is fitted with an elastic component that adjusts the rotational allowance of the fixing component.

5. The cycling assist device according to claim 1, characterized in that, The adjustment drive component includes a geared motor fixed to a fixed frame, the geared motor including a motor and a reduction gearbox or reduction gear set.

6. The cycling assist device according to claim 1, characterized in that, The power wheel includes a hub and a friction wheel disposed on the hub, as well as a fixed shaft connected to the hub via a bearing.

7. The cycling assist device according to claim 6, characterized in that, The friction surface of the friction wheel is provided with a friction structure to increase friction.

8. The cycling assist device according to claim 7, characterized in that, The friction surface is provided with an annular groove that contacts the wheel mating surface.

9. The cycling assist device according to claim 8, characterized in that, The annular groove is provided with several protrusions, and the grooves are formed between adjacent protrusions.

10. The cycling assist device according to claim 9, characterized in that, Water guide channels are provided on both sides of the annular groove, and the water guide channels are connected to each groove.

11. The cycling assist device according to claim 10, characterized in that, The depth of the water guide channel is greater than that of the groove.

12. The cycling assist device according to claim 1, characterized in that, The riding assist device is also equipped with a pressure sensor connected to the control circuit to detect the pressure between the assist wheel and the wheel.

13. The cycling assist device according to claim 1, characterized in that, The riding assist device is also equipped with a sensor connected to the control circuit to detect wheel speed and / or pedaling acceleration. The control circuit controls the speed of the drive motor when assisting based on the wheel speed and / or pedaling acceleration.

14. The cycling assist device according to claim 1, characterized in that, The cycling assist device is also equipped with an angle sensor connected to the control circuit to detect the angle between the bicycle and the horizontal plane, and determines the output speed of the control drive motor based on the size of the angle between the bicycle and the horizontal plane.

Images