Resistance device and pedaling cycle

Abstract

This invention relates to a resistance device and a pedal bicycle, comprising: a camshaft (1) with a wheel axle connecting rod (2) mounted on the camshaft, the two being eccentrically arranged; a resistance unit (3) rotatably connected to the wheel axle connecting rod (2); at least two resistance units (3) are provided. The resistance unit (3) is a hydraulic damper, and the resistance of the hydraulic damper is changed by adjusting a spring. This invention, through the design of the eccentric camshaft and wheel axle connecting rod, and the adjustable hydraulic resistance unit, provides a compact, flexible, and efficient resistance device suitable for use in aquatic sports training equipment. It can adapt to the sports training needs of different users, achieve precise power transmission and resistance control, enhance user experience, and improve training efficiency and effectiveness.

Description

Technical Field

[0001] This invention relates to the field of exercise bike technology, specifically a resistance device and a pedaling bicycle. Background Technology

[0002] Existing aquatic exercise training equipment, especially those targeting lower limb training such as water bikes and similar pedaling devices, generally suffers from a number of problems. These devices primarily rely on traditional resistance channels, resistance plates, resistance cups, or resistance wheels to provide the necessary resistance. However, these traditional resistance adjustment methods have the following drawbacks:

[0003] Insufficient resistance: Existing resistance devices often fail to meet the needs of professional athletes and patients requiring high-intensity rehabilitation training.

[0004] Non-adjustable resistance: Many devices are not designed with adjustable resistance in mind, which limits their application in different groups of people and different training stages.

[0005] Complex resistance adjustment methods: Even if some devices provide resistance adjustment functions, the adjustment methods are often complicated and cumbersome, making them inconvenient for users to operate.

[0006] Unable to provide differentiated resistance between left and right sides: Traditional equipment typically provides uniform resistance during circular pedaling motion, making it impossible to offer differentiated training intensity for the user's left and right lower limbs.

[0007] The resistance is consistent throughout the entire circumference of pedaling motion: Traditional equipment usually provides a consistent resistance throughout the entire circumference of pedaling motion, making it impossible to adjust the resistance in specific ranges to achieve the purpose of differentiated training.

[0008] The information disclosed in this background section is intended only to enhance the understanding of the general background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0009] To address the shortcomings of existing technologies, the present invention aims to provide a resistance device and a pedal bicycle. Through the design of an eccentric camshaft and wheel axle linkage, as well as an adjustable hydraulic resistance unit, a compact, flexible, and efficient resistance device is provided. This device is suitable for use in aquatic sports training equipment, can adapt to the sports training needs of different users, achieves precise power transmission and resistance control, enhances user experience, and improves training efficiency and effectiveness.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0011] A resistance device, characterized in that it comprises:

[0012] Camshaft 1, with a wheel axle connecting rod 2 mounted on the shaft body, the two being eccentrically positioned;

[0013] Resistance unit 3 is rotatably connected to wheel axle connecting rod 2; at least two resistance units 3 are provided.

[0014] Based on the above technical solution, the resistance unit 3 is a hydraulic damper. The resistance of the hydraulic damper can be changed by adjusting the spring, or the resistance can be adjusted by controlling the reciprocating flow resistance of the fluid in the two chambers by adjusting the valve.

[0015] Based on the above technical solution, the camshaft 1 includes:

[0016] The first eccentric block 11 and the second eccentric block 12 are set relative to each other;

[0017] A first connecting shaft 14 is provided between the first eccentric block 11 and the second eccentric block 12;

[0018] The first connecting shaft 14 is located at the small diameter end of the first eccentric block 11 and the second eccentric block 12;

[0019] A second connecting shaft 13 is provided at the large diameter end of the first eccentric block 11 and the second eccentric block 12 respectively;

[0020] The two second connecting shafts 13 extend in opposite directions;

[0021] Connecting rod segments 15 are provided at the far ends of the two second connecting shafts 13 respectively.

[0022] Based on the above technical solution, the two second connecting shafts 13 are located on the left lower limb side and the right lower limb side, respectively.

[0023] Based on the above technical solution, a bearing section 16 is provided between the second connecting shaft 13 and the connecting rod section 15, and the bearing section 16 is used to assemble the inner ring of the bearing.

[0024] Based on the above technical solution, the wheel axle connecting rod 2 includes:

[0025] The first semi-circular ring body 21 and the second semi-circular ring body 22 are joined together to form a first mounting through hole 211 that is compatible with the camshaft 1.

[0026] At least one resistance unit connecting rod 23 is provided along the outer contour of the first semi-circular ring body 21;

[0027] At least one resistance unit connecting rod 23 is provided along the outer contour of the second semi-circular ring body 22;

[0028] When two or more resistance unit connecting rods 23 are set, the included angle between adjacent resistance unit connecting rods 23 is 30-90 degrees.

[0029] Based on the above technical solution, the wheel axle connecting rod 2 includes:

[0030] The first semi-circular ring body 21 and the second semi-circular ring body 22 are joined together to form a first mounting through hole 211 that is compatible with the camshaft 1.

[0031] Splicing segments 24 are formed by extending outward from both sides of the first semi-circular ring body 21;

[0032] Splicing segments 24 are formed by extending outward from both sides of the second semi-circular body 22;

[0033] The connector passes through two splicing segments 24 to connect the first semi-circular ring body 21 and the second semi-circular ring body 22 into one unit;

[0034] At least one resistance unit connecting rod 23 is provided along the outer contour of the first semi-circular ring body 21;

[0035] At least one resistance unit connecting rod 23 is provided along the outer contour of the second semi-circular ring body 22;

[0036] When two or more resistance unit connecting rods 23 are set, the included angle between adjacent resistance unit connecting rods 23 is 30-90 degrees.

[0037] Based on the above technical solution, the connecting rod segment 15 is a rectangular rod, a hexagonal rod, or an elliptical rod.

[0038] A pedal bicycle, characterized in that it comprises:

[0039] The aforementioned resistance device is disposed between the upper mounting plate 4 and the lower mounting plate 5;

[0040] The outer frame 6 is connected to the upper mounting plate 4 and the lower mounting plate 5 to form an I-shaped fixing frame;

[0041] The I-shaped fixing frame is used to connect to the bicycle body.

[0042] A pedal bicycle, characterized in that it comprises:

[0043] The aforementioned resistance device is disposed between the upper mounting plate 4 and the lower mounting plate 5;

[0044] The outer frame 6 is connected to the upper mounting plate 4 and the lower mounting plate 5 to form a polygonal fixing frame, which includes at least four sides.

[0045] The polygonal fixing frame is used to connect to the bicycle body;

[0046] The inner side of the outer frame 6 is provided with a mounting base 7 for fixing the resistance unit 3.

[0047] The resistance device and pedal bicycle described in this invention have the following beneficial effects:

[0048] By employing an eccentric camshaft and wheel axle linkage design, along with an adjustable hydraulic resistance unit, a compact, flexible, and efficient resistance device is provided. This device is suitable for use in aquatic sports training equipment, adapting to the training needs of different users, achieving precise power transmission and resistance control, enhancing user experience, and improving training efficiency and effectiveness.

[0049] This invention discloses a resistance device suitable for use in underwater lower limb exercise training, such as during circular pedaling movements (cycling) in water. It provides appropriate resistance during pedaling. The overall design enhances the user's training experience by precisely controlling resistance and motion transitions, reducing the feeling of slipping, and offering adjustable left and right resistance for lower limb training. The use of multiple resistance units allows for richer and more effective training modes, improving training efficiency.

[0050] The resistance device described in this invention is not only applicable to circular motion devices such as water bicycles, but can also be extended to other devices that require resistance adjustment, and has broad application prospects. Attached Figure Description

[0051] The present invention includes the following figures:

[0052] The accompanying drawings are provided to better understand the invention and are not intended to unduly limit the scope of the invention. Wherein:

[0053] Figure 1 A structural diagram of an embodiment of the resistance device described in this invention.

[0054] Figure 2 An exploded view of a first embodiment of the resistance device described in this invention.

[0055] Figure 3 A schematic diagram of the camshaft structure.

[0056] Figure 4 A schematic diagram of the structure of Embodiment 1 of the wheel axle connecting rod.

[0057] Figure 5 A schematic diagram of the structure of Embodiment 2 of the wheel axle connecting rod.

[0058] Figure 6 A schematic diagram of the structure of Embodiment 3 of the wheel axle connecting rod.

[0059] Figure 7 A schematic diagram of the structure of a first embodiment of a pedal bicycle.

[0060] Figure 8 A schematic diagram of the second embodiment of the pedal bicycle.

[0061] Figure 9 A schematic diagram of the structure of a third embodiment of a pedal bicycle.

[0062] Figure 10 A schematic diagram of the fourth embodiment of the pedal bicycle. Detailed Implementation

[0063] The present invention will be further described in detail below with reference to the accompanying drawings. This detailed description is an illustration in conjunction with exemplary embodiments of the invention, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0064] like Figure 1 , Figure 2 The first embodiment of the resistance device shown in the figure illustrates a resistance device according to the present invention, comprising:

[0065] The camshaft 1 has a wheel axle connecting rod 2 mounted on its shaft body, and the two are eccentrically arranged; the eccentric arrangement means that the rotation centers of the two components do not coincide, that is, their axes are not on the same straight line; Figure 1 In the embodiment shown, an eccentrically arranged wheel axle connecting rod 2 is provided in the middle of the camshaft 1; the eccentric arrangement of the camshaft and the wheel axle connecting rod enables the circular pedaling motion to be efficiently converted into telescopic motion along the direction of the resistance unit, thereby improving the efficiency of motion conversion.

[0066] Resistance unit 3 is rotatably connected to wheel axle connecting rod 2; at least two resistance units 3 are provided.

[0067] As one of the optional implementation schemes, the resistance unit 3 is provided in 2 to 8 forms. For example, providing 2, 3, 4, 5, 6, 7 or 8 resistance units 3 are all optional implementation schemes. Figure 1 In the embodiment shown, four resistance units 3 are provided and are arranged at equal intervals; Figure 9 In the embodiment shown, three resistance units 3 are provided and are equally spaced. Figure 10 In the embodiment shown, six resistance units 3 are provided and are equally spaced. It can be understood that the more resistance units 3 there are, the more specific intervals on the circumference will be, which allows for more precise adjustment of the resistance magnitude of each interval. Figure 9 , Figure 10 In the embodiment shown, the resistance unit 3 adjusts the resistance by controlling the reciprocating flow resistance of the fluid in the two chambers through a regulating valve.

[0068] As one alternative implementation, the resistance unit 3 is a hydraulic damper. The resistance of the hydraulic damper is changed by adjusting a spring, or adjusted by controlling the resistance of the reciprocating flow of fluid in the two chambers via a regulating valve. The hydraulic damper includes a cylinder containing a piston and a piston rod. The piston rod is rotatably connected to the wheel axle connecting rod 2, for example, via a pin. When the piston moves back and forth, the fluid (hydraulic oil) in the cylinder flows reciprocally in the chambers on both sides of the piston. The resistance can be adjusted by controlling the resistance of the reciprocating flow of fluid in the two chambers. The piston rod is connected to the wheel axle connecting rod via a pin, ensuring the accuracy and reliability of power transmission.

[0069] When multiple resistance units 3 are set, the resistance of one or a pair of horizontally opposed resistance units 3 can be adjusted differently to achieve the purpose of subdividing the resistance of specific circumferences and thus achieving multiple different resistance ranges.

[0070] Based on the above technical solutions, such as Figure 3 As shown, the camshaft 1 includes:

[0071] The first eccentric block 11 and the second eccentric block 12 are set relative to each other;

[0072] A first connecting shaft 14 is provided between the first eccentric block 11 and the second eccentric block 12;

[0073] The first connecting shaft 14 is located at the small diameter end of the first eccentric block 11 and the second eccentric block 12;

[0074] A second connecting shaft 13 is provided at the large diameter end of the first eccentric block 11 and the second eccentric block 12 respectively;

[0075] The two second connecting shafts 13 extend in opposite directions; Figure 3 It can be clearly seen that the two second connecting shafts 13 extend in opposite directions. The axes of the two second connecting shafts 13 coincide, but they extend away from the first eccentric block 11 and the second eccentric block 12, respectively.

[0076] Connecting rod segments 15 are provided at the far ends of the two second connecting shafts 13 respectively; the far ends refer to the free ends that are far away from the first eccentric block 11 and the second eccentric block 12.

[0077] The camshaft includes a first eccentric block and a second eccentric block arranged opposite each other, as well as the layout of two connecting shafts, which optimizes the space utilization of the mechanical structure and also has better dynamic balance.

[0078] Based on the above technical solution, the two second connecting shafts 13 are located on the left lower limb side and the right lower limb side, respectively.

[0079] Based on the above technical solution, a bearing section 16 is provided between the second connecting shaft 13 and the connecting rod section 15, and the bearing section 16 is used to assemble the inner ring of the bearing.

[0080] Based on the above technical solutions, such as Figure 4 The first embodiment of the wheel-axle connecting rod shown includes:

[0081] The first semi-circular ring body 21 and the second semi-circular ring body 22 are joined together to form a first mounting through hole 211 adapted to the camshaft 1; more specifically, a first mounting through hole 211 adapted to the first connecting shaft 14 is formed.

[0082] At least one resistance unit connecting rod 23 is provided along the outer contour of the first semi-circular ring body 21;

[0083] At least one resistance unit connecting rod 23 is provided along the outer contour of the second semi-circular ring body 22;

[0084] When two or more resistance unit connecting rods 23 are set, the included angle between adjacent resistance unit connecting rods 23 is 30-90 degrees. By providing flexible installation angles, it can adapt to different training equipment and movement trajectories.

[0085] Figure 4 In the embodiment shown, two resistance unit connecting rods 23 are provided along the outer contour of the first semi-circular ring body 21, and the included angle between the two resistance unit connecting rods 23 is 90 degrees; two resistance unit connecting rods 23 are provided along the outer contour of the second semi-circular ring body 22, and the included angle between the two resistance unit connecting rods 23 is also 90 degrees; the first semi-circular ring body 21 and the second semi-circular ring body 22 are assembled into one piece by bolts 25.

[0086] Based on the above technical solutions, such as Figure 5 The second embodiment of the wheel axle connecting rod shown is similar to... Figure 4 Compared to the first embodiment shown, the difference is as follows:

[0087] Splicing segments 24 are formed by extending outward from both sides of the first semi-circular ring body 21;

[0088] Splicing segments 24 are formed by extending outward from both sides of the second semi-circular body 22;

[0089] The connector passes through two splicing segments 24 to connect the first semi-circular ring body 21 and the second semi-circular ring body 22 into one unit.

[0090] Figure 5 The connector, not shown, passes through the two splicing segments 24 to connect the first semi-circular ring body 21 and the second semi-circular ring body 22 into one unit. In specific implementation, the existing technology can be followed, and will not be described in detail here.

[0091] It is understandable that, such as Figure 6 As shown, the wheel axle connecting rod 2 can also adopt an integral structure. The center hole of the wheel axle connecting rod 2 is the first mounting through hole 211 adapted to the camshaft 1. The resistance unit connecting rod 23 is equally spaced along the outer contour of the wheel axle connecting rod 2, and the number of resistance unit connecting rods 23 matches the required number of resistance units.

[0092] Based on the above technical solution, the connecting rod segment 15 is a rectangular rod, a hexagonal rod, or an elliptical rod.

[0093] Figure 3 In the illustrated embodiment, the connecting rod segment 15 is a rectangular rod.

[0094] The resistance device described in this invention operates as follows:

[0095] The camshaft 1 rotates due to the circular pedaling motion; the camshaft 1 rotates along the second connecting shaft 13; for example, the connecting rod segment 15 of the camshaft 1 is a rectangular rod, and the foot pedal is connected to the rectangular rod. The camshaft 1 rotates due to the circular pedaling motion.

[0096] The eccentric setting of the camshaft 1 and the wheel axle connecting rod 2 allows the first connecting shaft 14 to rotate circumferentially around the camshaft 1. The wheel axle connecting rod 2 moves synchronously with the first connecting shaft 14, so that the circumferential pedaling motion is converted into a telescopic motion along the direction of the resistance unit 3 after passing through the wheel axle connecting rod 2.

[0097] Example 1: A pedal-powered bicycle.

[0098] like Figure 7 As shown, the present invention provides a pedal bicycle comprising:

[0099] A resistance device is located between the upper mounting plate 4 and the lower mounting plate 5;

[0100] The outer frame 6 is connected to the upper mounting plate 4 and the lower mounting plate 5 to form an I-shaped fixing frame;

[0101] The I-shaped fixing frame is used to connect to the bicycle body.

[0102] This embodiment changes the resistance by adjusting the resistance of the hydraulic damper, enabling the equipment to adapt to the sports training needs of different users, whether it is patient rehabilitation or professional athlete training.

[0103] By differentially adjusting the resistance of one or a pair of horizontally opposed resistance units 3, the resistance of specific intervals of the circumference can be subdivided and adjusted, providing multiple different resistance intervals and increasing the diversity and targeting of training.

[0104] Example 2 of using a pedal bicycle.

[0105] like Figure 8As shown, the present invention provides a pedal bicycle comprising:

[0106] A resistance device is located between the upper mounting plate 4 and the lower mounting plate 5;

[0107] The outer frame 6 is connected to the upper mounting plate 4 and the lower mounting plate 5 to form a polygonal fixing frame, which includes at least four sides.

[0108] The polygonal fixing frame is used to connect to the bicycle body;

[0109] The inner side of the outer frame 6 is provided with a mounting base 7 for fixing the resistance unit 3.

[0110] Figure 8 In the illustrated embodiment, the outer frame 6 is connected to the upper mounting plate 4 and the lower mounting plate 5, forming an eight-sided polygonal fixed frame. The resistance device has four resistance units 3, each of which is connected to the outer frame 6 via a mounting base 7. In this embodiment, a bearing section design can be used to assemble the inner ring of the bearing, enhancing the stability and durability of the mechanical movement; the outer ring of the bearing can be correspondingly fixed on the upper mounting plate 4 and the lower mounting plate 5.

[0111] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0112] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present invention should be included in the scope of protection set forth in the claims.

Claims

1. A resistance device, characterized in that, include: A camshaft (1) has a wheel axle connecting rod (2) on its shaft body, and the two are eccentrically arranged; The resistance unit (3) is rotatably connected to the wheel axle connecting rod (2); at least two resistance units (3) are provided.

2. The resistance device as described in claim 1, characterized in that, The resistance unit (3) is a hydraulic damper. The resistance of the hydraulic damper can be changed by adjusting the spring, or the resistance can be adjusted by controlling the reciprocating flow resistance of the fluid in the two chambers by adjusting the valve.

3. The resistance device as described in claim 1, characterized in that, The camshaft (1) includes: The first eccentric block (11) and the second eccentric block (12) are set relative to each other; A first connecting shaft (14) is provided between the first eccentric block (11) and the second eccentric block (12); The first connecting shaft (14) is located at the small diameter end of the first eccentric block (11) and the second eccentric block (12); A second connecting shaft (13) is provided at the large diameter end of the first eccentric block (11) and the second eccentric block (12); The two second connecting shafts (13) extend in opposite directions; Connecting rod segments (15) are provided at the far ends of the two second connecting shafts (13).

4. A resistance device as described in claim 3, characterized in that, The two second connecting shafts (13) are located on the left lower limb side and the right lower limb side, respectively.

5. A resistance device as described in claim 3, characterized in that, A bearing section (16) is provided between the second connecting shaft (13) and the connecting rod section (15), the bearing section (16) being used to assemble the inner ring of the bearing.

6. A resistance device as described in claim 3, characterized in that, The wheel axle connecting rod (2) includes: The first semi-circular ring body (21) and the second semi-circular ring body (22) are joined together to form a first mounting through hole (211) that is compatible with the camshaft (1); At least one resistance unit connecting rod (23) is provided along the outer contour of the first semi-circular ring body (21); At least one resistance unit connecting rod (23) is provided along the outer contour of the second semi-circular ring body (22); When two or more resistance unit connecting rods (23) are set, the included angle between adjacent resistance unit connecting rods (23) is 30-90 degrees.

7. A resistance device as described in claim 3, characterized in that, The wheel axle connecting rod (2) includes: The first semi-circular ring body (21) and the second semi-circular ring body (22) are joined together to form a first mounting through hole (211) that is compatible with the camshaft (1); Splicing segments (24) are formed by extending outward from both sides of the first semi-circular ring body (21); Splicing segments (24) are formed by extending outward from both sides of the second semi-circular body (22); The connector passes through two splicing sections (24) to connect the first semi-circular ring body (21) and the second semi-circular ring body (22) into one piece; At least one resistance unit connecting rod (23) is provided along the outer contour of the first semi-circular ring body (21); At least one resistance unit connecting rod (23) is provided along the outer contour of the second semi-circular ring body (22); When two or more resistance unit connecting rods (23) are set, the included angle between adjacent resistance unit connecting rods (23) is 30-90 degrees.

8. A resistance device as described in claim 3, characterized in that, The connecting rod segment (15) is a rectangular rod, a hexagonal rod, or an elliptical rod.

9. A pedal bicycle, characterized in that, include: The resistance device as described in any one of claims 1-8 is disposed between the upper mounting plate (4) and the lower mounting plate (5); The outer frame (6) is connected to the upper mounting plate (4) and the lower mounting plate (5) to form an I-shaped fixing frame; The I-shaped fixing frame is used to connect to the bicycle body.

10. A pedal bicycle, characterized in that, include: The resistance device as described in any one of claims 1-8 is disposed between the upper mounting plate (4) and the lower mounting plate (5); The outer frame (6) is connected to the upper mounting plate (4) and the lower mounting plate (5) to form a polygonal fixing frame, wherein the polygonal fixing frame includes at least four sides; The polygonal fixing frame is used to connect to the bicycle body; The inner side of the outer frame (6) is provided with a mounting base (7) for fixing the resistance unit (3).

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