An electric magnetic resistance puller

Abstract

An electric magnetic resistance tensioner includes a cover body, the cover body includes an inner cover and an outer cover fixedly connected to each other, the cover body is provided with a wire pulling hole; a connecting mandrel is fixedly provided inside the cover body, and a force storage device and a magnetic resistance device are provided on the connecting mandrel; the force storage device includes a spring bin, a spiral spring is provided inside the spring bin, a bin cover is provided on the spring bin, the connecting mandrel passes through the bin cover and the spring bin, the spiral spring and the wire pulling wire are connected to the spring bin, and the wire pulling wire passes through the wire pulling hole; the magnetic resistance device includes a fixed seat, a magnet and a metal plate, the metal plate is fixedly provided on the back of the spring bin, the fixed seat is fixedly provided on the connecting mandrel, and a plurality of magnets are evenly distributed along the circumference in the fixed seat. This electric magnetic resistance tensioner is provided with a magnetic resistance device, which can effectively increase the force required to pull the pull rope without increasing the volume of the tensioner, and is convenient to carry.

Description

Technical Field

[0001] The invention belongs to the technical field of tensioners, and in particular relates to an electric magnetic resistance tensioner. Background Art

[0002] A tensioner is a device suitable for mass fitness exercises. The Chinese patent application with application number 201720740594.9 discloses a tensioner with adjustable strength, which includes a fixed pull ring, a movable pull ring symmetrically arranged with the fixed pull ring, and a pull rope arranged between the fixed pull ring and the movable pull ring, one end of the pull rope is wound around the turntable of the fixed pull ring, and the other end passes through the movable pull ring, and a spiral spring is arranged between the turntable and the fixed pull ring, one end of the spiral spring is fixedly mounted on the turntable, and the other end is fixedly mounted on the fixed pull ring. Although the strength of this tensioner can be adjusted, in order to achieve the specified exercise intensity, the spiral spring must be made large enough, which is inconvenient to carry with you. Summary of the invention

[0003] The purpose of the present invention is to provide an electric reluctance puller, which solves the problems raised in the above background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is: an electric magnetic resistance puller, comprising a cover body, the cover body comprising an inner cover and an outer cover fixedly connected to each other, and the cover body is provided with a wire pulling hole;

[0005] A connecting core shaft is fixedly arranged inside the cover body, and a force storage device and a magnetic resistance device are arranged on the connecting core shaft;

[0006] The force storage device comprises a spring bin, a spiral spring is arranged inside the spring bin, a bin cover is arranged on the spring bin, the connecting mandrel passes through the bin cover and the spring bin, the spiral spring and the pull wire are connected to the spring bin, and the pull wire passes through the pull wire hole;

[0007] The magnetic resistance device comprises a fixing seat, a magnet and a metal plate. The metal plate is fixed on the back of the spring bin. The fixing seat is fixed on the connecting core shaft. A plurality of magnets are evenly distributed along the circumference of the fixing seat.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme, the magnetic resistance device also includes a rotating core shaft and a one-way bearing, the connecting core shaft passes through the rotating core shaft, the one-way bearing is arranged on the outside of the rotating core shaft, and the one-way bearing is arranged between the rotating core shaft and the spring chamber.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme, the electric reluctance puller also includes a friction resistance device, which includes a motor and a gear pressure plate. The motor is fixed inside the cover body, and the outer side of the gear pressure plate is connected to the motor. The connecting core shaft passes through the gear pressure plate, and the connecting core shaft is threadedly connected to the gear pressure plate. The gear pressure plate is located on the right side of the fixed seat, and the gear pressure plate and the fixed seat are in conflict with each other.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme, a blocking surface is fixedly provided on the connecting core shaft, the rotating core shaft includes an end face extending outward, the end face and the fixed seat are in conflict with each other, and the one-way bearing is located between the blocking surface and the end face.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme, the gear pressure plate is connected to the motor through gear meshing.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme, a cylindrical pin is fixed between the inner cover and the outer cover, and the cylindrical pin passes through the fixing seat, a compression spring is sleeved on the cylindrical pin, and the compression spring is arranged between the inner cover and the fixing seat.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme, a control board is fixedly provided on the outside of the outer cover, and the control board can control the forward and reverse rotation of the motor. The control board is covered with an end cover, and the end cover is fixedly connected to the connecting core shaft.

[0014] On the basis of the above solution and as a preferred solution of the above solution, the metal plate is an aluminum plate.

[0015] On the basis of the above scheme and as a preferred scheme of the above scheme, the spiral spring is a planar spiral spring.

[0016] On the basis of the above scheme and as a preferred scheme of the above scheme, the one-way bearing is a one-way needle roller bearing.

[0017] The beneficial effects of the present invention are as follows: the electric magnetic resistance tensioner is provided with a magnetic resistance device, which can effectively increase the force required to pull the rope without increasing the volume of the tensioner, and is convenient to carry; a friction resistance device is provided, which can not only adjust the resistance of the tensioner, but also further increase the resistance to pulling the rope by increasing the friction of the spring chamber; intelligent control and adjustment of the tensioner is realized by setting a control panel; a one-way bearing is provided between the rotating core shaft and the spring chamber, and when the rope is retracted, the spring chamber is separated from the rotating core shaft, and the rotating core shaft no longer rotates together, thereby reducing resistance and smoothly retracting the rope; a compression spring is provided between the inner cover and the fixed seat, and when the motor rotates in the opposite direction, the gear pressure plate is moved away from the fixed seat, and the compression spring can move the fixed seat to the right, so that the fixed seat and the gear pressure plate are always in contact with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a cross-sectional view of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the power storage device.

[0022] Figure 4 It is a schematic diagram of the structure of the fixing seat and the magnet.

[0023] The reference numerals are as follows:

[0024] 11. Inner cover; 12. Outer cover; 13. Wire hole; 14. End cover;

[0025] 2. Connecting mandrel; 21. Blocking surface;

[0026] 31. Spring bin; 32. Scroll spring; 33. Bin cover;

[0027] 41. fixed seat; 42. magnet; 43. metal plate; 44. rotating mandrel; 441. end face; 45. one-way bearing;

[0028] 51. Motor; 52. Gear pressure plate; 53. Cylindrical pin; 54. Compression spring;

[0029] 6. Control panel. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] As attached Figure 1 To Attachment Figure 4 As shown, an electric magnetic resistance puller includes a cover body, wherein the cover body includes an inner cover 11 and an outer cover 12 fixedly connected to each other, and a wire pulling hole 13 is provided on the cover body;

[0033] A connecting core shaft 2 is fixedly arranged inside the cover body, and a force storage device and a magnetic resistance device are arranged on the connecting core shaft 2;

[0034] The force storage device includes a spring bin 31, a spiral spring 32 is arranged inside the spring bin 31, a bin cover 33 is arranged on the spring bin 31, the connecting mandrel 2 passes through the bin cover 33 and the spring bin 31, the spiral spring 32 and the pull wire are connected to the spring bin 31, and the pull wire passes through the pull wire hole 13;

[0035] The magnetic resistance device includes a fixing seat 41, a magnet 42 and a metal plate 43. The metal plate 43 is fixed on the back of the spring chamber 31. The fixing seat 41 is fixed on the connecting core shaft 2. A plurality of magnets 42 are evenly distributed along the circumference of the fixing seat 41.

[0036] When in use, the scroll spring is in a relaxed state. When the pull cord is pulled outward with force, the scroll spring tightens and drives the metal plate to rotate. During the rotation of the metal plate, the magnetic lines of force in the magnetic field generated by the magnet will be cut to generate an induced current, thereby generating resistance and preventing the metal plate from rotating, thereby increasing the resistance to the pull cord being pulled out and increasing the force required to pull the pull cord.

[0037] The magnetic resistance device further includes a rotating mandrel 44 and a one-way bearing 45. The connecting mandrel 2 passes through the rotating mandrel 44. The one-way bearing 45 is arranged outside the rotating mandrel 44 and between the rotating mandrel 44 and the spring chamber 31. When the pull rope is pulled, the one-way bearing will rotate the metal plate together, thereby cutting the magnetic flux lines and producing greater resistance; when the pull rope is released, the pull rope automatically contracts under the action of the volute spring; at the same time, the one-way bearing will separate the spring chamber from the rotating mandrel, and the rotating mandrel will no longer rotate together, thereby reducing resistance and smoothly retracting the pull rope.

[0038] The electric magnetic resistance puller also includes a friction resistance device, which includes a motor 51 and a gear pressure plate 52. The motor 51 is fixed inside the cover body, and the outer side of the gear pressure plate 52 is connected to the motor 51. The connecting mandrel 2 passes through the gear pressure plate 52, and the connecting mandrel 2 is threadedly connected to the gear pressure plate 52. The gear pressure plate 52 is located on the right side of the fixed seat 41, and the gear pressure plate 52 and the fixed seat 41 are in conflict with each other. When the motor rotates in the forward direction, the motor will drive the gear pressure plate to rotate together. Since the gear pressure plate is threadedly connected to the connecting mandrel, the gear pressure plate will move to the side close to the magnetic resistance device, and then squeeze the magnetic resistance device to the side of the metal plate, so that the distance between the magnet and the metal plate is closer. When the metal plate rotates, it will be subjected to greater resistance; at the same time, the spring chamber that fixes the metal plate is also subjected to greater friction, thereby further increasing the force required to pull the pull rope.

[0039] A blocking surface 21 is fixedly provided on the connecting core shaft 2, and the rotating core shaft 44 includes an end surface 441 extending outward, and the end surface 441 is in conflict with the fixed seat 41. The one-way bearing 45 is located between the blocking surface 21 and the end surface 441. When squeezed, it can ensure that the one-way bearing is located between the blocking surface and the end surface.

[0040] The gear pressure plate 52 is meshedly connected with the motor 51 through gears, and the gear pressure plate can be driven to rotate forward or reversely through the forward or reverse rotation of the motor.

[0041] A cylindrical pin 53 is fixed between the inner cover 11 and the outer cover 12, and the cylindrical pin 53 passes through the fixing seat 41. A compression spring 54 is sleeved on the cylindrical pin 53, and the compression spring 54 is arranged between the inner cover 11 and the fixing seat 41. When the fixing seat is squeezed and moves to the left, the compression spring contracts and compresses; when the motor rotates in the reverse direction, so that the gear pressure plate is away from the fixing seat, the compression spring can move the fixing seat to the right, so that the fixing seat and the gear pressure plate are always in contact with each other.

[0042] A control panel 6 is fixedly disposed on the outside of the outer cover 12, and the control panel 6 can control the forward and reverse rotation of the motor 51. The control panel 6 is covered with an end cover 14, and the end cover 14 is fixedly connected to the connecting mandrel 2. The motor can be controlled to rotate forward or reverse through the control panel, so as to adjust the force required to pull the draw cord.

[0043] The metal plate 43 is an aluminum plate, which has good electrical conductivity and is cheaper than a copper plate.

[0044] The spiral spring 32 is a flat spiral spring, which is convenient for placing the spiral spring in the spring compartment.

[0045] The one-way bearing 45 is a one-way needle roller bearing, which has a compact radial structure, and when its inner diameter and load capacity are the same as those of other types of bearings, its outer diameter is the smallest, and is particularly suitable for support structures with limited radial installation dimensions.

[0046] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric magnetic resistance puller, characterized in that: The cover comprises a cover body, wherein the cover body comprises an inner cover (11) and an outer cover (12) which are fixedly connected to each other, and a wire drawing hole (13) is provided on the cover body; A connecting core shaft (2) is fixedly arranged inside the cover body, and a force storage device and a magnetic resistance device are arranged on the connecting core shaft (2); The force storage device comprises a spring bin (31), a spiral spring (32) is arranged inside the spring bin (31), a bin cover (33) is arranged on the spring bin (31), the connecting core shaft (2) passes through the bin cover (33) and the spring bin (31), the spiral spring (32) and the pull wire are connected to the spring bin (31), and the pull wire passes through the pull wire hole (13); The magnetic resistance device comprises a fixed seat (41), a magnet (42) and a metal plate (43); the metal plate (43) is fixedly arranged on the back side of the spring chamber (31); the fixed seat (41) is fixedly arranged on the connecting core shaft (2); and a plurality of magnets (42) are evenly distributed along the circumference of the fixed seat (41); The electric magnetic resistance puller also includes a friction resistance device, which includes a motor (51) and a gear pressure plate (52). The motor (51) is fixedly arranged inside the cover body, the outer side of the gear pressure plate (52) is connected to the motor (51), the connecting core shaft (2) passes through the gear pressure plate (52), and the connecting core shaft (2) is threadedly connected to the gear pressure plate (52), the gear pressure plate (52) is located on the right side of the fixed seat (41), and the gear pressure plate (52) and the fixed seat (41) are in conflict with each other; When the motor (51) rotates in the forward direction, the motor (51) drives the gear pressure plate (52) to rotate together, and the gear pressure plate (52) moves toward the side close to the magnetic resistance device, pressing the magnetic resistance device toward the side of the metal plate (43), so that the distance between the magnet (42) and the metal plate (43) is closer, and the metal plate (43) encounters greater resistance when rotating. At the same time, the spring chamber (31) fixing the metal plate (43) is subjected to greater friction, thereby increasing the force required to pull the pull wire.

2. An electric magnetic resistance puller according to claim 1, characterized in that: The magnetic resistance device also includes a rotating core shaft (44) and a one-way bearing (45), the connecting core shaft (2) passes through the rotating core shaft (44), the one-way bearing (45) is arranged outside the rotating core shaft (44), and the one-way bearing (45) is arranged between the rotating core shaft (44) and the spring chamber (31).

3. An electric magnetic resistance puller as claimed in claim 2, characterized in that: A blocking surface (21) is fixedly provided on the connecting core shaft (2); the rotating core shaft (44) comprises an end surface (441) extending outwards; the end surface (441) and the fixed seat (41) are in contact with each other; and the one-way bearing (45) is located between the blocking surface (21) and the end surface (441).

4. The electric magnetic resistance puller according to claim 1, characterized in that: The gear pressure plate (52) is connected to the motor (51) via gear meshing.

5. The electric magnetic resistance puller according to claim 1, characterized in that: A cylindrical pin (53) is fixedly provided between the inner cover (11) and the outer cover (12), and the cylindrical pin (53) passes through the fixing seat (41). A compression spring (54) is sleeved on the cylindrical pin (53), and the compression spring (54) is provided between the inner cover (11) and the fixing seat (41).

6. The electric magnetic resistance puller according to claim 1, characterized in that: A control panel (6) is fixedly provided on the outside of the outer cover (12), and the control panel (6) is capable of controlling the forward and reverse rotation of the motor (51). The control panel (6) is covered with an end cover (14) on the outside, and the end cover (14) is fixedly connected to the connecting core shaft (2).

7. The electric magnetic resistance puller according to claim 1, characterized in that: The metal plate (43) is an aluminum plate.

8. The electric magnetic resistance puller according to claim 2, characterized in that: The spiral spring (32) is a plane spiral spring.

9. An electric magnetic resistance puller as claimed in claim 2, characterized in that: The one-way bearing (45) is a one-way needle roller bearing.

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