Resistance device and pedal bicycle

Abstract

The utility model relates to a resistance device and a pedaling bicycle, which comprise a cam shaft (1), a wheel shaft connecting rod (2) arranged on a shaft body, and the cam shaft (1) and the wheel shaft connecting rod (2) are eccentrically arranged; the resistance unit (3) is rotationally connected with the axle connecting rod (2); the number of the resistance units (3) is at least two. The resistance unit (3) is a hydraulic damper, and the resistance of the hydraulic damper is changed by adjusting a spring. Through the design of the eccentric cam shaft, the wheel shaft connecting rod and the adjustable hydraulic resistance unit, the resistance device is compact in structure, flexible to adjust, efficient, suitable for water exercise training equipment, capable of meeting exercise training requirements of different users, capable of achieving accurate power transmission and resistance control, capable of enhancing user experience and high in practicability. And the training efficiency and effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dynamic bicycle technical field, specifically a resistance device and pedal bicycle. BACKGROUND

[0002] In the existing water sports training equipment, especially for lower limb training equipment, such as underwater bicycle and similar pedal equipment, there are a series of problems. These devices mainly rely on traditional resistance grooves, resistance plates, resistance cups or resistance wheels to provide the required resistance for training. However, these traditional resistance adjustment methods have the following defects:

[0003] Too small resistance: the resistance provided by the existing resistance equipment often cannot meet the needs of professional athletes and patients who need high-intensity rehabilitation training.

[0004] Resistance is not adjustable: many devices do not consider the adjustability of resistance in design, which limits their application in different groups and different training stages.

[0005] Complex resistance adjustment method: even if some devices provide resistance adjustment function, the adjustment method is often complex and cumbersome, which is not convenient for user operation.

[0006] Cannot adjust the left and right resistance differentiation: the resistance provided by traditional devices in circular pedaling motion is usually uniform, and cannot provide differentiated training intensity for the left and right lower limbs of the user.

[0007] Consistent resistance throughout the circle in circular pedaling motion: the resistance provided by traditional devices in circular pedaling motion is usually consistent throughout the circle, and cannot be adjusted in a specific interval to achieve the purpose of differentiated training.

[0008] The information disclosed in this background section is only intended to deepen the understanding of the overall background of the utility model, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0009] In view of the defects in the prior art, the purpose of the utility model is to provide a resistance device and pedal bicycle, which provides a compact, flexible and efficient resistance device through the design of eccentric camshaft and wheel shaft connecting rod, and adjustable hydraulic resistance unit, suitable for water sports training equipment, can adapt to the training needs of different users, realize accurate power transmission and resistance control, enhance user experience, and improve training efficiency and effect.

[0010] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0011] A resistance device, characterized by comprising:

[0012] A camshaft 1 is provided with an axle connecting rod 2, and the two are eccentrically arranged;

[0013] A resistance unit 3 is rotationally connected with the axle connecting rod 2; the resistance unit 3 is provided with at least two.

[0014] On the basis of the above technical scheme, the resistance unit 3 is a hydraulic damper, the resistance of which is changed by adjusting a spring, or the resistance is adjusted by adjusting a valve to control the reciprocating flow resistance of the fluid in the two cavities.

[0015] On the basis of the above technical scheme, the camshaft 1 comprises:

[0016] A first eccentric block 11 and a second eccentric block 12 are oppositely arranged;

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

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

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

[0020] The extension directions of the two second connecting shafts 13 are opposite;

[0021] A connecting rod segment 15 is arranged at the distal end of the two second connecting shafts 13, respectively.

[0022] On the basis of the above technical scheme, the two second connecting shafts 13 are respectively located at the left lower limb side and the right lower limb side.

[0023] On the basis of the above technical scheme, a bearing segment 16 is arranged between the second connecting shaft 13 and the connecting rod segment 15, and the bearing segment 16 is used to assemble the inner ring body of a bearing.

[0024] On the basis of the above technical scheme, the axle connecting rod 2 comprises:

[0025] A first semicircular ring body 21 and a second semicircular ring body 22 are integrally combined to form a first mounting through hole 211 adapted to the camshaft 1 in the middle;

[0026] At least one resistance unit connecting rod 23 is arranged along the outer contour of the first semicircular ring body 21;

[0027] At least one resistance unit connecting rod 23 is arranged along the outer contour of the second semicircular ring body 22;

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

[0029] On the basis of the above technical solution, the wheel shaft connecting rod 2 comprises:

[0030] The first half circular ring body 21 and the second half circular ring body 22 are integrated to form a first mounting through hole 211 adapted to the camshaft 1 in the middle;

[0031] The first half circular ring body 21 and the second half circular ring body 22 are integrated to form a first mounting through hole 211 adapted to the camshaft 1 in the middle;

[0032] The first half circular ring body 21 and the second half circular ring body 22 are integrated to form a first mounting through hole 211 adapted to the camshaft 1 in the middle;

[0033] The connecting piece passes through the two splicing sections 24 to integrate the first half circular ring body 21 and the second half circular ring body 22;

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

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

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

[0037] On the basis of the above technical solution, the connecting rod section 15 is a rectangular rod body, a hexagonal rod body or an elliptical rod body.

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

[0039] The resistance device of any one of the preceding embodiments is arranged between the upper mounting plate 4 and the lower mounting plate 5.

[0040] The outer frame body 6 is connected with the upper mounting plate 4 and the lower mounting plate 5 to form a I-shaped fixed frame.

[0041] The I-shaped fixed frame is used to connect with the cycle body.

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

[0043] The resistance device of any one of the preceding embodiments is arranged between the upper mounting plate 4 and the lower mounting plate 5.

[0044] The outer frame body 6 is connected with the upper mounting plate 4 and the lower mounting plate 5 to form a polygonal fixed frame, and the polygonal fixed frame comprises at least four sides.

[0045] The polygonal fixed frame is used to connect with the cycle body.

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

[0047] The resistance device and the pedal cycle have the following beneficial effects:

[0048] Through the eccentric camshaft and the wheel shaft connecting rod design, and the adjustable hydraulic resistance unit, a compact structure, flexible and efficient resistance device is provided, which is suitable for underwater exercise training equipment, can adapt to the exercise training needs of different users, realizes accurate power transmission and resistance control, enhances user experience, and improves training efficiency and effect.

[0049] The resistance device is suitable for use in underwater lower limb exercise training, such as lower limb exercise training of circular pedaling movement (pedaling a bicycle) of the feet in water, and can provide appropriate resistance when pedaling. The overall design enhances the user's exercise training experience by accurately controlling the resistance and motion conversion, reduces the feeling of empty pedaling, and provides the function of adjustable left and right force of lower limb training. The configuration of multiple resistance units can provide more rich and effective training modes and improve training efficiency.

[0050] The resistance device is not only suitable for underwater bicycles and other circular motion appliances, but also can be extended to other devices that need resistance adjustment, and has a wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0051] The utility model has the following drawings:

[0052] The drawings are used for better understanding the utility model and do not constitute undue limitation on the utility model. Among them:

[0053] Figure 1 The structure diagram of the embodiment one of the resistance device.

[0054] Figure 2 The explosion view of the embodiment one of the resistance device.

[0055] Figure 3 The structure diagram of the camshaft.

[0056] Figure 4 The structure diagram of the embodiment one of the wheel shaft connecting rod.

[0057] Figure 5 The structure diagram of the embodiment two of the wheel shaft connecting rod.

[0058] Figure 6 The structure diagram of the embodiment three of the wheel shaft connecting rod.

[0059] Figure 7A 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 of exemplary embodiments of the present invention, including various details of these 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 present 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 this utility model includes:

[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 adjusting the valve to control the reciprocating flow resistance of the fluid in the two cavities.

[0068] As one of the alternative embodiments, the resistance unit 3 is a hydraulic damper, and the resistance is adjusted by adjusting the spring to change the resistance of the hydraulic damper, or by adjusting the valve to control the reciprocating flow resistance of the fluid in the two cavities. The hydraulic damper includes a cylinder, which contains a piston and a piston rod inside, and the piston rod is connected to the axle connecting rod 2, for example, through a pin connection. When the piston moves forward and backward, the fluid (hydraulic oil) in the cylinder reciprocates in the cavities on both sides of the piston. The resistance can be adjusted by controlling the reciprocating flow resistance of the fluid in the two cavities. The connection of the piston rod and the axle connecting rod through the pin ensures the accuracy and reliability of power transmission.

[0069] When multiple resistance units 3 are provided, the resistance of one or a pair of horizontally opposed resistance units 3 can be adjusted differently to achieve fine adjustment of the resistance in a specific range of the circumference, and the purpose of multiple different resistance ranges is achieved.

[0070] On the basis of the above technical solutions, as shown in the figure, Figure 3 The camshaft 1 comprises:

[0071] A first eccentric block 11 and a second eccentric block 12 are oppositely arranged;

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

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

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

[0075] The extension directions of the two second connecting shafts 13 are opposite; Figure 3 As can be seen intuitively in the figure, the extension directions of the two second connecting shafts 13 are opposite, and the axes of the two second connecting shafts 13 coincide, but extend in directions away from the first eccentric block 11 and the second eccentric block 12, respectively;

[0076] A connecting rod segment 15 is arranged at the distal end of the two second connecting shafts 13, respectively; the distal end refers to the free end away from the first eccentric block 11 and the second eccentric block 12.

[0077] The camshaft comprises oppositely arranged first and second eccentric blocks, and the layout of two connecting shafts, which optimizes the space utilization of the mechanical structure and also has better dynamic balance.

[0078] On the basis of the above technical solutions, the two second connecting shafts 13 are respectively located at one side of the left lower limbs and one side of the right lower limbs.

[0079] On the basis of the above technical solutions, a bearing segment 16 is arranged between the second connecting shaft 13 and the connecting rod segment 15, and the bearing segment 16 is used for assembling an inner ring body of a bearing.

[0080] On the basis of the above technical solutions, as shown in the first embodiment of the wheel shaft connecting rod, Figure 4 the wheel shaft connecting rod 2 comprises:

[0081] The first semicircular ring body 21 and the second semicircular ring body 22 are spliced into one body 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 arranged along the outer contour of the first semicircular ring body 21;

[0083] At least one resistance unit connecting rod 23 is arranged along the outer contour of the second semicircular ring body 22;

[0084] When two or more resistance unit connecting rods 23 are arranged, the included angle between adjacent resistance unit connecting rods 23 is 30-90 degrees, and by providing a flexible mounting angle, different training equipment and movement trajectories can be adapted.

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

[0086] On the basis of the above technical solutions, as shown in the second embodiment of the wheel shaft connecting rod, Figure 5 compared with the first embodiment shown in Figure 4 the difference lies in that:

[0087] The splicing segments 24 are formed by extending outwardly on both sides of the first semicircular ring body 21;

[0088] The splicing segments 24 are formed by extending outwardly on both sides of the second semicircular ring body 22;

[0089] The connecting piece connects the first semicircular ring body 21 and the second semicircular ring body 22 into one body by penetrating through the two splicing segments 24.

[0090] Figure 5The connecting member is not shown in the figure, and the first semicircular ring body 21 and the second semicircular ring body 22 are connected into one body by the connecting member penetrating through the two spliced segments 24, and the specific implementation can be according to the prior art, and details are not described herein.

[0091] It can be understood that, as Figure 6 shown, the axle connecting rod 2 can also adopt an integrated structure, the central hole of the axle connecting rod 2 is a first mounting through hole 211 matched with the camshaft 1, and the resistance unit connecting rods 23 are arranged along the outer contour of the axle connecting rod 2 at equal intervals, and the number of the resistance unit connecting rods 23 matches the number of the required resistance units.

[0092] On the basis of the above technical scheme, the connecting rod segment 15 is a rectangular rod body, a hexagonal rod body or an elliptical rod body.

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

[0094] The resistance device is characterized in that the working process is as follows:

[0095] The camshaft 1 is driven to rotate by the circumferential pedaling movement; the camshaft 1 rotates along the second connecting shaft 13; for example, the connecting rod segment 15 of the camshaft 1 adopts a rectangular rod body, and the foot pedal is connected with the rectangular rod body.

[0096] The eccentric arrangement of the camshaft 1 and the axle connecting rod 2, the first connecting shaft 14 rotates circumferentially around the camshaft 1, the axle connecting rod 2 moves synchronously with the first connecting shaft 14, and the circumferential pedaling movement is converted into the extension and contraction movement along the direction of the resistance unit 3 after passing through the axle connecting rod 2.

[0097] Pedal cycle embodiment one.

[0098] As Figure 7 shown, the pedal cycle comprises:

[0099] The resistance device is arranged between the upper mounting plate 4 and the lower mounting plate 5.

[0100] The outer frame body 6 is connected with the upper mounting plate 4 and the lower mounting plate 5, and forms an I-shaped fixed frame.

[0101] The I-shaped fixed frame is used for connecting with the cycle body.

[0102] In this embodiment, the resistance is changed by adjusting the resistance of the hydraulic damper, so that the device can adapt to the exercise training needs of different users, whether it is for the rehabilitation of patients or the training of professional athletes.

[0103] By differentiating adjusting the resistance of one or a pair of horizontally opposite resistance units 3, the resistance of the specific interval of the circle is subdivided and adjusted, a plurality of different resistance intervals are provided, and the diversity and pertinence of the training are increased.

[0104] Pedal cycle embodiment two.

[0105] As shown in the utility model discloses a kind of pedal cycle, comprising: Figure 8 As shown in the utility model discloses a kind of pedal cycle, comprising:

[0106] Resistance device, between upper mounting plate 4 and lower mounting plate 5 is equipped;

[0107] Outer frame 6 is connected with upper mounting plate 4 and lower mounting plate 5, and constitutes polygonal fixed frame, and the polygonal fixed frame at least includes four edges;

[0108] Polygonal fixed frame is used to be connected with cycle body;

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

[0110] Figure 8 As shown in the embodiment, outer frame 6 is connected with upper mounting plate 4 and lower mounting plate 5, and constitutes the polygonal fixed frame of eight edges, and the resistance device is provided with four resistance units 3, and each resistance unit 3 is connected with outer frame 6 by one mounting base 7.In this embodiment, the inner ring body of bearing section can be used for assembling bearing, which enhances the stability and durability of mechanical movement;The outer ring body of bearing can be fixed on upper mounting plate 4 and lower mounting plate 5 accordingly.

[0111] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0112] The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above-mentioned embodiment, but any equivalent modification or change made by those skilled in the art according to the disclosed content of the utility model shall be included in the protection scope recorded 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 camshaft (1) specifically 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); The resistance unit (3) is 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. 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.

2. The resistance device as described in claim 1, characterized in that, The two second connecting shafts (13) are located on the left lower limb side and the right lower limb side, respectively.

3. The resistance device as described in claim 1, 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.

4. A resistance device as described in claim 1, characterized in that, 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.

5. A resistance device as described in claim 1, characterized in that, 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.

6. A resistance device as described in claim 1, characterized in that, The connecting rod segment (15) is a rectangular rod, a hexagonal rod, or an elliptical rod.

7. A pedal bicycle, characterized in that, include: The resistance device as described in any one of claims 1-6 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.

8. A pedal bicycle, characterized in that, include: The resistance device as described in any one of claims 1-6 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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