Portable high-torsion vortex type resistor

Abstract

The invention relates to the field of fitness sports equipment, in particular to a portable high-torsion vortex type resistor which comprises a shell, a flywheel is rotatably connected in the shell, a magnetic conductive surface is arranged at the annular outer end of the flywheel, two magnetic resistance mechanisms are symmetrically mounted in the shell, a winding shaft is rotatably connected in the shell and located on the right sides of the magnetic resistance mechanisms, and the magnetic conductive surface is arranged at the annular outer end of the flywheel. A first transmission wheel is arranged on the front side of the shell, the front end of the winding shaft penetrates through the shell and is connected with the first transmission wheel, a second transmission wheel is installed on the front side of the shell, the shaft portion of the flywheel penetrates through the shell and is connected with the second transmission wheel, the first transmission wheel is connected with the second transmission wheel through a belt, and a traction rope is wound around the outer end of the winding shaft. According to the design, high-efficiency exercise load is generated through the flywheel with the small diameter and size, the flywheel has the advantages of being light and thin in size but high in torsion, space configuration design of fitness equipment is facilitated, enough exercise load is achieved, and the fitness effect is effectively guaranteed.

Description

Technical Field

[0001] The invention discloses a light and high-torque eddy current resistor, belonging to the field of fitness equipment. Background Art

[0002] Fitness equipment, as an indispensable part of modern fitness experience, is becoming increasingly rich with the popularization of fitness culture and the diversification of sports. These equipments are not only of various types and specifications, but also increasingly sophisticated in design. Among them, the resistance machine, as one of the core components of fitness equipment, helps users achieve more efficient exercise results by providing adjustable resistance load.

[0003] At present, common resistors on the market are usually composed of key components such as flywheels, permanent magnets, stator cores, coils, and brake mechanisms. When users exercise, the flywheel starts to rotate, and a closed magnetic circuit is formed between the permanent magnets installed on it and the stator core, which in turn generates an induced current in the coil. The electrical energy in this process is rectified and filtered, converted into direct current, and transmitted to the brake mechanism, thereby applying resistance to the flywheel to achieve the desired exercise effect.

[0004] However, this relatively complex resistance system is not only bulky, but also requires a large installation space, which to some extent limits its application in small or single-function fitness equipment. In addition, due to its delicate structure and high maintenance cost, it may not be the best choice for consumers who pursue portability and economy. Therefore, how to further optimize the structure and size of the resistor while maintaining high performance so that it can better adapt to the diverse market needs will be a major challenge in the field of fitness equipment. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a lightweight and high-torque eddy current drag device.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a light and high torque eddy current resistor, comprising a shell, a flywheel is rotatably connected inside the shell, a magnetic conductive surface is arranged at the annular outer end of the flywheel, two magnetic resistance mechanisms are symmetrically installed inside the shell, and the two magnetic resistance mechanisms are respectively located on the left and right sides of the magnetic conductive surface, the two magnetic resistance mechanisms are arranged oppositely, and a reel is rotatably connected inside the shell, and the reel is located on the right side of the magnetic resistance mechanism;

[0007] A first transmission wheel is arranged on the front side of the shell, a front end of the winding shaft passes through the shell and is connected to the first transmission wheel, a second transmission wheel is installed on the front side of the shell, a shaft of the flywheel passes through the shell and is connected to the second transmission wheel, the first transmission wheel and the second transmission wheel are connected by a belt, an auxiliary mechanism is arranged inside the shell, and the auxiliary mechanism is located on the right side of the winding shaft, a traction rope is wound around the outer end of the winding shaft, and a movable end of the traction rope passes through the auxiliary mechanism and extends out of the right side of the shell.

[0008] Further, the auxiliary mechanism comprises a box body, the box body is installed in the shell, and the opening of the box body is arranged to the left, the right end surface of the box body is recessed to the left to form a through hole, and the through hole extends to the inner wall of the box body;

[0009] A guide cylinder is movably installed in the box body, and the guide cylinder is located on the left side of the through hole. A driving assembly is arranged at the lower end of the guide cylinder, and the driving assembly is installed in the box body. The movable end of the traction rope passes through the guide cylinder and the through hole.

[0010] Furthermore, a movable cylinder is movably installed at the right end of the box body, and the movable cylinder is located on the right side of the through hole, and the movable cylinder extends out of the right side of the outer shell. The inside of the box body is symmetrically rotated and connected with two guide wheels, and the guide wheels are located on the right side of the driving assembly. The two guide wheels are located on the front and rear ends of the traction rope.

[0011] Furthermore, the driving assembly includes a nut seat, which is arranged at the lower end of the guide cylinder and is located in a box body. A screw rod is rotatably connected in the box body, and the screw rod passes through the nut seat, and the screw rod and the nut seat are connected through a rolling nut pair.

[0012] Furthermore, a second sprocket is arranged on the rear side of the shell, the rear end of the winding shaft passes through the shell and is connected to the second sprocket, the first sprocket is installed on the rear side of the shell, the rear end of the screw rod passes through the box body and the shell and is connected to the first sprocket, and the first sprocket and the second sprocket are connected by a chain.

[0013] Furthermore, the magnetic resistance mechanism includes a resistance core, which is installed in the shell and located outside the flywheel. An electromagnetic coil is installed inside the resistance core.

[0014] Furthermore, an annular speed sticker is arranged at the rear end of the flywheel, and an optical sensor is arranged on the inner rear wall of the shell, and the optical sensor is located outside the flywheel, and the optical sensor is located directly behind the annular speed sticker.

[0015] Beneficial effects of the present invention:

[0016] 1. Two closed magnetic circuits that do not interfere with each other are formed on the left and right sides of the flywheel through two electromagnetic coils, two resistance cores, a flywheel and a magnetic conductive surface. The flywheel and the magnetic conductive surface are rotated by using a traction rope, a winding shaft, a first transmission wheel, a synchronous belt and a second transmission wheel, so that the two closed magnetic circuits will form eddy current magnetic resistance, and the eddy current magnetic resistance can reach the highest torque, so that a flywheel with a smaller diameter and volume can generate a high-efficiency motion load. It has the characteristics of light volume but high torque, which is convenient for the spatial configuration design of fitness equipment and achieves sufficient motion load, so that it can be applied to various fitness equipment, and can improve the efficiency of the load, effectively ensuring the fitness effect.

[0017] 2. Through the second sprocket, chain, first sprocket, lead screw and nut seat, the guide cylinder is made to move back and forth in a straight line, so that the traction rope on the reel can move in an orderly manner, effectively reducing the probability of damage caused by friction between the traction rope and the outer shell and other components, effectively reducing the probability of knotting of the traction rope on the reel, and effectively ensuring the fitness effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 It is a structural schematic diagram of a light and high torque eddy current drag device of the present invention;

[0020] Figure 2 A cross-sectional view of a lightweight, high-torque eddy current drag device according to the present invention;

[0021] Figure 3 It is an assembly diagram of the electromagnetic coil, the flywheel and the resistance iron core in the light and high torque eddy current drag device of the present invention;

[0022] Figure 4 A three-dimensional diagram of a flywheel in a light and high torque eddy current drag device of the present invention;

[0023] Figure 5 It is an assembly diagram of the electromagnetic coil and the resistance iron core in the light and high torque eddy current resistance device of the present invention;

[0024] Figure 6 A three-dimensional diagram of a reel in a light and high torque eddy current drag device of the present invention;

[0025] Figure 7 It is a cross-sectional view of the box body of the light and high torque eddy current drag device of the present invention.

[0026] In the figure: 1, outer shell, 2, electromagnetic coil, 3, box body, 4, traction rope, 5, first transmission wheel, 6, second transmission wheel, 7, flywheel, 8, winding shaft, 21, resistance iron core, 31, movable cylinder, 32, through hole, 33, guide wheel, 34, first sprocket, 35, screw rod, 36, nut seat, 37, guide cylinder, 71, magnetic conductive surface, 72, annular speed sticker, 73, optical sensor, 81, second sprocket. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] Embodiment 1: Figure 1-Figure 6 As shown, a light and high torque eddy current resistor is provided, comprising a housing 1, a flywheel 7 having a magnetic conductive surface 71 disposed at an annular outer end is rotatably connected in the housing 1, the magnetic conductive surface 71 is rotated by the flywheel 7, and two magnetic resistance mechanisms, which are respectively located on the left and right sides of the magnetic conductive surface 71 and are arranged opposite to each other and are composed of a resistance core 21 located outside the flywheel 7 and an electromagnetic coil 2 installed inside the resistance core 21, are symmetrically installed inside the housing 1, and the two magnetic resistance mechanisms are used in combination to apply resistance to the rotation of the flywheel 7;

[0029] An annular speed sticker 72 is arranged on the rear end of the flywheel 7, and an optical sensor 73 located outside the flywheel 7 and directly behind the annular speed sticker 72 is arranged on the inner rear wall of the housing 1. The optical sensor 73 and the annular speed sticker 72 are used in conjunction with each other to detect the speed of the flywheel 7. Then, the reel 8 located on the right side of the magnetic resistance mechanism is rotatably connected to the housing 1, and the traction rope 4 is reeled in through the reel 8.

[0030] The front end of the take-up shaft 8 passes through the housing 1 and is connected to the first transmission wheel 5 located on the front side of the housing 1, and the shaft of the flywheel 7 passes through the housing 1 and is connected to the second transmission wheel 6 located on the front side of the housing 1, and the first transmission wheel 5 and the second transmission wheel 6 are connected by a belt. The first transmission wheel 5, the second transmission wheel 6 and the belt are used together to rotate the flywheel 7, and then the traction rope 4 whose movable end extends out of the right side of the housing 1 is wound around the outer end of the take-up shaft 8, and the take-up shaft 8 is rotated through the traction rope 4.

[0031] When in use, the electromagnetic coil 2 circuit is first connected, and a magnetic field is generated on the resistance iron core 21 through the principle of magneto-electric conversion. A closed magnetic circuit is formed between this magnetic field and the magnetic conductive surface 71 on the flywheel 7. Then, the active part of the fitness device movably connected to the traction rope 4 is pulled, so that the traction rope 4 is released to the right, and the reel 8 is rotated, thereby rotating the first transmission wheel 5, and with the assistance of the synchronous belt, the second transmission wheel 6 is rotated, thereby rotating the flywheel 7 and the magnetic conductive surface 71;

[0032] The rotation of the flywheel 7 will destroy the closed magnetic circuit formed between the magnetic conductive surface 71 and the resistance iron core 21. According to Lenz's law, when a stable magnetic circuit is destroyed by an external force, a force of the same magnitude and opposite direction will be generated to resist, and this force will form a resistance load on the pulling of the traction rope 4.

[0033] And two magnetic resistance mechanisms formed by the electromagnetic coil 2 and the resistance iron core 21 are located on the left and right sides of the flywheel 7, so that closed magnetic circuits are formed on both sides of the flywheel 7, and the two closed magnetic circuits will not interfere with each other. During the rotation of the flywheel 7, the two closed magnetic circuits will form eddy current magnetic resistance, and the eddy current magnetic resistance can reach the highest torque;

[0034] The flywheel 7 with a smaller diameter and volume can generate a high-efficiency motion load, which is thin and light but has high torque, and is convenient for the spatial configuration design of fitness equipment. It can also achieve sufficient motion load, so that it can be applied to various fitness equipment, and can also improve the efficiency of the load, effectively ensuring the fitness effect;

[0035] During the rotation of the flywheel 7, the annular speed sticker 72 will rotate. At this time, the optical sensor 73 will collect the speed data of the annular speed sticker 72 and transmit the speed data to the terminal. The terminal analyzes and calculates the speed data, thereby transmitting an appropriate current to the electromagnetic coil 2 to adjust the resistance load.

[0036] Embodiment 2: Figure 1 , Figure 6 and Figure 7 As shown, the box body 3 with the opening facing left and located on the right side of the winding shaft 8 is installed in the shell 1, and the box body 3 is used to provide installation space for components such as the guide cylinder 37, and the right end surface of the box body 3 is recessed to the left to form a through hole 32 extending to the inner wall of the box body 3, and the traction rope 4 is led out of the box body 3 through the through hole 32, and the movable cylinder 31 located on the right side of the through hole 32 and extending out of the right side of the shell 1 is installed on the right end of the box body 3, and the movable cylinder 31 is used to prevent the traction rope 4 from rubbing against the edge of the inner wall of the through hole 32;

[0037] The guide cylinder 37 located on the left side of the through hole 32 is movably installed in the box body 3, and the movement of the traction rope 4 is guided by the guide cylinder 37, and the nut seat 36 located in the box body 3 is set on the lower end of the guide cylinder 37, and the nut seat 36 is used to provide a mounting carrier for the guide cylinder 37, and then the screw rod 35 that penetrates the nut seat 36 and is connected to the nut seat 36 through the rolling nut pair is rotatably connected to the box body 3, and the nut seat 36 is made to move linearly through the screw rod 35;

[0038] The two guide wheels 33 located at the front and rear ends of the traction rope 4 and on the right side of the nut seat 36 are symmetrically rotated and connected to the inside of the box body 3. The two guide wheels 33 are used in combination to guide the movement of the traction rope 4, and the rear end of the winding shaft 8 passes through the outer shell 1 and is connected to the second sprocket 81 located on the rear side of the outer shell 1. The rear end of the screw rod 35 passes through the box body 3 and the outer shell 1 and is connected to the first sprocket 34 located on the rear side of the outer shell 1, and the first sprocket 34 is connected to the second sprocket 81 through a chain. The first sprocket 34, the second sprocket 81 and the chain are used in combination to make the screw rod 35 rotate as the winding shaft 8 rotates, and the movable end of the traction rope 4 passes through the guide cylinder 37, the through hole 32 and the guide cylinder 37.

[0039] When in use, first pull the active part of the fitness equipment movably connected to the traction rope 4, so that the traction rope 4 is released to the right, and the winding shaft 8 is rotated, so that the second sprocket 81 is rotated, and with the assistance of the chain, the first sprocket 34 is rotated, and then the screw rod 35 is rotated. Because the screw rod 35 is connected to the nut seat 36 through a rolling nut pair, the screw rod 35 rotates and the nut seat 36 performs a straight line movement back and forth, so that the guide cylinder 37 performs a straight line movement back and forth, so that the traction rope 4 on the winding shaft 8 can move in an orderly manner, effectively reducing the probability of damage caused by friction between the traction rope 4 and the outer shell 1 and other components, and effectively reducing the probability of knotting of the traction rope 4 on the winding shaft 8, effectively ensuring the fitness effect.

[0040] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Lightweight high torque eddy current drag, characterized by: The invention comprises a housing (1), wherein a flywheel (7) is rotatably connected inside the housing (1), a magnetic conductive surface (71) is provided at the annular outer end of the flywheel (7), two magnetic resistance mechanisms are symmetrically installed inside the housing (1), and the two magnetic resistance mechanisms are respectively located on the left and right sides of the magnetic conductive surface (71), and the two magnetic resistance mechanisms are arranged opposite to each other, and a winding shaft (8) is rotatably connected inside the housing (1), and the winding shaft (8) is located on the right side of the magnetic resistance mechanism; A first transmission wheel (5) is arranged on the front side of the housing (1); the front end of the winding shaft (8) passes through the housing (1) and is connected to the first transmission wheel (5); a second transmission wheel (6) is installed on the front side of the housing (1); the shaft of the flywheel (7) passes through the housing (1) and is connected to the second transmission wheel (6); the first transmission wheel (5) and the second transmission wheel (6) are connected via a belt; an auxiliary mechanism is arranged inside the housing (1), and the auxiliary mechanism is located on the right side of the winding shaft (8); a traction rope (4) is wound around the outer end of the winding shaft (8); the movable end of the traction rope (4) passes through the auxiliary mechanism and extends out of the right side of the housing (1).

2. The light and high torque eddy current drag device according to claim 1, characterized in that: The auxiliary mechanism comprises a box body (3), the box body (3) is installed in the housing (1), and the opening of the box body (3) is arranged to face leftward, the right end surface of the box body (3) is recessed to the left to form a through hole (32), and the through hole (32) extends to the inner wall of the box body (3); A guide cylinder (37) is movably installed in the box body (3), and the guide cylinder (37) is located on the left side of the through hole (32). A driving assembly is arranged at the lower end of the guide cylinder (37), and the driving assembly is installed in the box body (3). The movable end of the traction rope (4) passes through the guide cylinder (37) and the through hole (32).

3. The light and high torque eddy current drag device according to claim 2, characterized in that: A movable cylinder (31) is movably mounted on the right end of the box body (3), and the movable cylinder (31) is located on the right side of the through hole (32). The movable cylinder (31) extends out of the right side of the shell (1). Two guide wheels (33) are symmetrically rotatably connected inside the box body (3), and the guide wheels (33) are located on the right side of the driving assembly. The two guide wheels (33) are located on the front and rear ends of the traction rope (4).

4. The light and high torque eddy current drag device according to claim 2, characterized in that: The driving assembly comprises a nut seat (36), the nut seat (36) being arranged at the lower end of the guide cylinder (37), and the nut seat (36) being located in the box body (3), and a screw rod (35) being rotatably connected in the box body (3), the screw rod (35) passing through the nut seat (36), and the screw rod (35) and the nut seat (36) being connected via a rolling nut pair.

5. The light and high torque eddy current drag device according to claim 4, characterized in that: A second sprocket (81) is arranged on the rear side of the shell (1); a rear end of the reel (8) passes through the shell (1) and is connected to the second sprocket (81); a first sprocket (34) is installed on the rear side of the shell (1); a rear end of the lead screw (35) passes through the box body (3) and the shell (1) and is connected to the first sprocket (34); and the first sprocket (34) and the second sprocket (81) are connected via a chain.

6. The light and high torque eddy current drag device according to claim 1, characterized in that: The magnetic resistance mechanism comprises a resistance iron core (21), the resistance iron core (21) is installed in the housing (1), and the resistance iron core (21) is located outside the flywheel (7), and the electromagnetic coil (2) is installed inside the resistance iron core (21).

7. The light and high torque eddy current drag device according to claim 1, characterized in that: An annular speed sticker (72) is arranged at the rear end of the flywheel (7), and an optical sensor (73) is arranged on the inner rear wall of the housing (1), and the optical sensor (73) is located outside the flywheel (7), and the optical sensor (73) is located directly behind the annular speed sticker (72).

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