TWI826115B - Fitness mechanism with adjustable tensile strength - Google Patents

Abstract

A fitness mechanism with adjustable tensile strength, including: a magnetically controlled flywheel set on a main shaft and driven by it, which can adjust the rotational resistance of the flywheel through the size of the eddy current; two pulleys, each through a One-way bearings with opposite actuation directions are arranged on the spindles on both sides of the magnetically controlled flywheel. The outer end is connected to a scroll spring, and a webbing is wrapped around the outer periphery; pulling the webbing will cause the winding wheel to drive the spindle and flywheel in the forward direction. rotation, the rotational resistance of the flywheel will be fed back to the webbing; stop pulling the webbing, the kinetic energy accumulated by the scroll spring will cause the take-up wheel to rotate in the opposite direction to rewind the webbing, and the spindle and flywheel will maintain their position due to the one-way bearing. Rotation of inertia. The mechanism can be locked on a fitness frame through the feet of a bracket set, and the free end of the webbing can be passed around the guide pulley of the bracket and then connected to a handle, so that the user can hold the handle with both hands. The handle can pull the webbing back and forth to achieve a fitness effect similar to skiing or rowing.

Description

Fitness mechanism with adjustable tensile strength

The invention relates to a fitness mechanism, in particular to a magnetically controlled flywheel to adjust resistance and a pulley equipped with one-way bearings and scroll springs, thereby achieving an adjustable tension similar to skiing or rowing. Strength fitness facility.

According to reports, there are millions of people around the world who enjoy skiing and rowing activities. Most of them do it purely for entertainment, but many people regard it as a sports competition; but no matter what kind of mentality they are based on, they can be gained through the process of the activity. Fitness benefits. Secondly, skiing and rowing are often affected by seasons, weather, and sites, making it difficult for athletes to continue their activities. Therefore, in recent years, many inventors have created skiing and rowing sports equipment to satisfy their sports interests. Users can also perform fitness activities with the same functions indoors at will.

Figure 1A shows a conventional ski fitness equipment. It uses left and right pull ropes 910/920 to pull a fan mechanism 940 through a body 930, and the movement resistance comes from the blades in the fan mechanism 940 (not shown in the figure). (shown in the figure); although the resistance of pulling the rope is similar to the force output of the skiing hands, the resistance cannot be set and adjusted as needed, so it cannot meet the needs of the user.

Figure 1B shows a conventional rowing exercise machine, which uses a pulley 810 to pull a flywheel mechanism 820, and the movement resistance comes from the blades 830 on both sides of the flywheel mechanism 820 and the axis connected to it. Reluctance mechanism 840; although the resistance can be changed by changing the input current of the reluctance mechanism 840, because the pulley 810 is prone to slipping when the resistance is high, the movement resistance cannot be effectively fed back to the user; and the movement mode of the mechanism The handle 850 is pulled with both hands to drive the rope 860 to move, and the movement function of alternating hands cannot be achieved.

Check out the skiing and rowing fitness equipment mentioned above. They are both fitness equipment that strengthens arm muscles. Therefore, how to make both hands exert force at the same time or alternately, and the movement resistance can be set and adjusted by the user, and effectively feedback to the user, has become a subject that the inventor wants to further improve.

Therefore, the main purpose of the present invention is to provide a fitness mechanism with adjustable tensile strength that uses a magnetically controlled flywheel to adjust movement resistance, thereby strengthening arm muscles.

The secondary purpose of the present invention is to use a pulley to combine with a one-way bearing to maintain the flywheel's inertial rotation, and to combine with a scroll spring to pull the webbing back and forth to achieve an adjustable tension similar to skiing or rowing. Strength fitness facility.

In order to achieve the above object, the technical means adopted by the present invention include: a bracket group, a spindle, a magnetically controlled flywheel, two pulleys, two linking parts, two scroll springs, and two protective covers; wherein, the The bracket group has a left and right plate frame, each of which is provided with an axis hole and a foot base, and the left and right plate frames are combined into one body with a plurality of spaced shafts and bolts; the main shaft is connected through a bearing seat and a bearing, penetrated and pivoted in the shaft hole of the bracket group; the magnetically controlled flywheel includes a flywheel and at least one magnetic resistance mechanism, the flywheel has a central hole to be sleeved on the main shaft, and allows The flywheel is driven by the main shaft and rotates; the reluctance mechanism includes an electromagnet, a coil and an input line, which is fixed on one side of the bracket group through a fixed frame and is placed with a gap At the outer periphery of the flywheel, when the input line is fed with a direct current, an eddy current will be generated and produce a resistance to the rotating flywheel.

Following the above, the two pulleys are respectively assembled on the main shaft on the left and right sides of the bracket group through one-way rotating components with opposite operating directions to each other. An annular groove is recessed on the outer periphery of the pulley, and a webbing is provided. , can be wound on the ring groove, and pulling the free end of the webbing individually will cause the take-up wheel to rotate; the two linking parts each have a connected rod body and a disk body, and the disk system is arranged on The outer end of the pulley enables the linking member to rotate synchronously with the pulley; the two scroll springs are individually sleeved on the rod body of the linking member, and their inner ring ends are fixed on the rod body The outer edge of the scroll spring; the protective cover is individually assembled on the bracket group through a connecting seat, and is sleeved on the outer edge of the scroll spring, and the outer ring end of the scroll spring It is fixed in the slot provided on the inner edge of the protective cover.

Thereby, changing the input current of the reluctance mechanism, the eddy current formed by it will change the resistance of the flywheel rotation; once the free end of the webbing is pulled, the winding pulley will drive the main shaft and the flywheel in the forward direction. When the flywheel rotates, the rotation resistance of the flywheel will be fed back to the pulling of the webbing, thereby achieving the fitness effect of adjusting the tensile strength; due to the connection of the linkage, the winding pulley will also drive the inner ring end of the scroll spring to roll, And when the webbing stops pulling, the kinetic energy accumulated in the scroll spring will promote its rewinding, and at the same time drive the take-up wheel to rotate in the opposite direction to rewind the webbing. function to continuously maintain the rotation of inertia.

According to the aforementioned features, the one-way rotating component of the present invention includes a one-way bearing.

According to the aforementioned features, the present invention further includes a fitness frame, which has a board that can stand on the ground and two symmetrically arranged brackets on the top surface of which are assembled. The turning points of the brackets are respectively provided with guide belts. wheel; lock the foot of the bracket group on the plate body, then pass the free end of the webbing around the inner edge of the bracket and the guide pulley, and connect the tail end with a handle, then the user can use both hands By holding the handle, the webbing can be pulled back and forth for fitness activities.

According to the aforementioned characteristics, the present invention further includes a control unit installed on the fitness frame, which has a human-machine interface and a rectifying component, and connects the external power supply and the input line of the magnetoresistive mechanism. The desired resistance value can be input through the human-machine interface to adjust the tensile strength of the fitness exercise.

With the help of the front-opening feature, the "fitness mechanism with adjustable tensile strength" of the present invention has the following benefits:

(1) The magnetically controlled flywheel in the present invention has a flywheel and at least one reluctance mechanism; the flywheel is sleeved on the main shaft to receive the rotation of the main shaft; the reluctance mechanism includes an electromagnet and a coil and an input line, which is fixed on the outer periphery of the flywheel at a distance of a gap through a fixed bracket, then when the input After the wire is fed with a direct current, the electromagnet will form an eddy current and produce a resistance effect on the rotating flywheel. Changing the amount of direct current can change the size of the eddy current, thereby adjusting the rotation resistance of the flywheel to achieve Strengthen the fitness effect of arm muscles.

(2) The present invention uses two pulleys, which are individually combined with one-way bearings with opposite operating directions and are arranged on the main shafts on both sides of the bracket group. Pulling the webbing around the pulley will drive the main shaft and the flywheel to be inertially aligned. Rotate in the opposite direction, and the rotation resistance of the flywheel will be fed back to the webbing; the take-up wheel is also connected to a scroll spring to make it roll. When the webbing stops pulling, the scroll spring will prompt the take-up wheel to rotate in the opposite direction. The webbing is rolled back, so the user can pull the webbing back and forth with both hands at the same time or alternately to achieve the fitness effect of strengthening both hands and arms.

(3) In the present invention, the fitness mechanism is locked on the board body of the fitness frame by using the feet of the bracket set, and two symmetrically arranged brackets are provided on the top surface, and the turning points of the bracket are provided with guides. Pulley; After passing the free end of the webbing around the inner edge of the bracket and the guide pulley, the tail end is connected to a handle. Then the user can hold the handle with both hands and pull the webbing back and forth, achieving a motion similar to that of skiing or rowing. Fitness effect.

10:Bracket group

11: Left plate rack

12:Right plate rack

13: Shaft hole

14: Foot base

15: Spacing axis

16:bolt

20:Spindle

21:Bearing seat

22:Bearing

30:Magnetic flywheel

31: Flywheel

32: Center hole

33: Square key

34:Magnetic resistance mechanism

35:Electromagnet

36: coil

37:Fixed bracket

40:Reeling pulley

41:One-way bearing

42: Ribbon

43: Ring groove

50: Linking parts

51: Rod body

52: plate body

60:Scroll spring

61: Inner ring end

62: Outer ring end

70:Protective cover

71: Connector

72: Groove

80:Fitness frame

81:Plate body

82:Bracket

83: Guide pulley

100: Fitness mechanism with adjustable tensile strength

200: Ski fitness equipment

Figure 1A is a schematic structural diagram of a conventional ski fitness equipment.

Figure 1B is a schematic structural diagram of a conventional rowing fitness device.

Figure 2 is a perspective view of the structural assembly of the present invention.

Figure 3 is an exploded perspective view of the structure of the present invention.

Figure 4 is a side view of the structural assembly of the present invention.

Figure 5 is a perspective cross-sectional view of the structural assembly of the present invention.

Figure 6 is a front cross-sectional view of the structural assembly of the present invention.

Figure 7 is an assembled perspective view of the ski fitness equipment of the present invention.

Figure 8 is an assembled front view of the ski fitness equipment of the present invention.

Figure 9 is a top view of the ski fitness equipment assembly of the present invention.

Figure 10 is a schematic diagram of the operation of the ski fitness equipment of the present invention.

First, please refer to Figures 2 to 6, which are the "fitness mechanism with adjustable tensile strength" 100 of the present invention, which includes a bracket group 10, a spindle 20, a magnetic flywheel 30, two pulleys 40, two The linkage 50, two scroll springs 60, and two protective covers 70; among them, the bracket group 10 has a left and right plate frame 11/12, which are respectively provided with an axis hole 13 and a foot base 14, and are A plurality of spacer shafts 15 and bolts 16 combine the left and right plate frames 11/12 into one body; the main shaft 20 is inserted into the shaft hole of the bracket group 10 through two sets of bearing seats 21 and two bearings 22 13, so that the spindle 20 can pivot in the bracket group 10; the magnetically controlled flywheel 30 includes a flywheel 31 and at least one reluctance mechanism 34. The flywheel 31 has a central hole 32 and is set with a square key 33 It is arranged on the main shaft 20 so that the flywheel 31 can accept the drive of the main shaft 20 and rotate; the reluctance mechanism 34 includes an electromagnet 35 in the form of an E-shaped body and a coil 36 located in the inner recess of the E-shaped body. , and an input line (not shown) is connected to the coil 36. The reluctance mechanism 34 fixes the electromagnet 35 in the bracket group 10 through a fixing bracket 37, and is placed on the bracket group 10 with a gap. On the outer periphery of the flywheel 31, after the input line is externally fed with a direct current and enters the coil 36, the electromagnet 35 will generate an eddy current and produce a resistance effect on the rotating flywheel 31; in this embodiment, the magnet The resistance mechanism 34 is provided with two groups and is arranged at an angle on one side of the bracket group 10, which can disperse the resistance effect and make the rotation speed of the flywheel 31 more stable.

The two sets of pulleys 40 are respectively one-way rotating components with opposite operating directions. In this embodiment, the one-way rotating components are one-way bearings 41, which are arranged on the left and right sides of the bracket set 10. On the main shaft 20, due to the action of the one-way bearing 41, the driven part (ie the main shaft 20) can only rotate in one direction, and the one-way bearings 41 arranged on the left and right sides of the bracket group 10 have opposite operating directions. Therefore, if the take-up pulley 40 located on the left side of the bracket group 10 rotates forward, it will drive the main shaft 20 to rotate forward. When the take-up pulley 40 is rotated in the reverse direction, it will cause idling relative to the main shaft 20 (the main shaft 20 continues to rotate forward); on the contrary, Tape reel located on the right side of bracket group 10 The reverse rotation of the pulley 40 will drive the main shaft 20 to rotate forward, while the forward rotation of the take-up pulley 40 will cause the main shaft 20 to idle (the main shaft 20 continues to rotate forward); in addition, an annular groove 43 is recessed on the outer periphery of the take-up pulley 40, The webbing 42 is wound around the ring groove 43. When the free end of the webbing 42 is pulled, the take-up wheel 40 will drive the spindle 20 to rotate; two sets of linking parts 50 each have a connected rod body 51 and a disk body. 52. The disk body 52 is assembled at the outer end of the take-up pulley 40 so that the linkage 50 can rotate synchronously with the take-up pulley 40; the two sets of scroll springs 60 are individually sleeved on the linkage 50 on the rod body 51, and its inner ring end 61 is fixed on the outer edge of the rod body 51; the two sets of protective covers 70 are respectively assembled on the bracket set 10 through a connecting seat 71, and are sleeved on On the outer edge of the scroll spring 60, each set of protective covers 70 in this embodiment uses three U-shaped connecting seats 71, one end of which is locked on the edge of the protective cover 70, and the other end is locked on the bracket. On the frame assembly 10, at the same time, the outer ring end 62 of the scroll spring 60 is fixed in the embedding groove 72 provided on the inner edge of the protective cover 70; because the inner ring end 61 of the scroll spring 60 is fixed with the tape The wheel 40 rotates synchronously on the rod 51 of the linkage 50, and the outer ring end 62 is fixed on the fixed protective cover 70. Therefore, when the webbing 42 is pulled to make the take-up wheel 40 rotate, the scroll spring 60 will be rolled up to accumulate momentum.

Thereby, changing the input current of the input line of the reluctance mechanism 34, the eddy current formed by the electromagnet 35 will change the resistance of the rotation of the flywheel 31; once the free end of the webbing 42 is pulled, the webbing will The wheel 40 drives the main shaft 20 and the flywheel 31 to rotate forward, then the rotation resistance of the flywheel 31 will be fed back to the pulling of the webbing 42, thereby achieving the fitness effect of adjusting the tensile strength; furthermore, due to the connection of the linkage 50, the The take-up wheel 40 will also drive the inner ring end 61 of the scroll spring 60 to roll, and when the webbing 42 stops pulling, the kinetic energy accumulated in the scroll spring 60 will cause it to rewind and simultaneously drive the take-up wheel. 40 rotates in the opposite direction to rewind the webbing 42, and the main shaft 20 and the flywheel 31 continue to maintain inertial rotation due to the action of the one-way bearing 41.

Please further refer to Figures 7 to 9, which are structural diagrams of the "fitness mechanism with adjustable tensile strength" 100 of the present invention applied to a ski fitness machine 200. As can be seen from the drawings, the ski fitness machine 200 includes a fitness frame. 80. It has a plate body 81 that can stand on the ground and is arranged on the top of the plate body 81. There are two brackets 82 arranged symmetrically, and the turning points of the brackets 82 are respectively provided with guide pulleys 83; the feet 14 of the bracket group 10 are locked on the plate body 81, and then the webbing 42 is After the free end passes through the inner edge of the bracket 82 and the guide pulley 83, the tail end is connected to a handle 84. When the user holds the handle 84 with both hands, the webbing 42 can be pulled back and forth, and the take-up pulley 40 will The main shaft 20 and the flywheel 31 are driven to rotate forward, and the rotation resistance of the flywheel 31 will be fed back to the pulling of the webbing 42 to achieve a fitness effect with tensile strength; when the pulling of the webbing 42 is stopped, the kinetic energy of the scroll spring 60 will promote The take-up wheel 40 rotates in the opposite direction to rewind the webbing 42, while the main shaft 20 and the flywheel 31 continue to rotate inertly.

The present invention further includes a control unit (not shown), which can be installed on the fitness frame 80. It has a human-machine interface and a rectification component, and connects the external power supply to the input line of the reluctance mechanism 34. The user can input the desired resistance value through the human-machine interface, and the control unit will adjust the input current value through the rectifier component. After the input line is sent to the coil 36, the electromagnet 35 will form a The eddy current generates a resistance effect on the rotating flywheel 31; since the human-machine interface facilitates the user to input the desired resistance value, the control unit immediately changes the current value, and the rotation resistance of the flywheel 31 is directly fed back to the webbing 42 Therefore, the ski fitness device 200 of the present invention will have the fitness effect of adjustable pulling intensity.

Figure 10 is a schematic diagram of the operation of the ski fitness equipment 200 of the present invention. In the figure, the user stands with both feet on the board 81 of the fitness frame 80, and holds the handle 84 with both hands. The user can If both hands pull the webbing 42 simultaneously or alternately, the take-up wheel 40 will drive the main shaft 20 and the flywheel 31 to rotate forward, and if both hands stop pulling the webbing 42 simultaneously or alternately, the take-up wheel 40 will rotate in the opposite direction. direction to rewind the webbing 42, while the main shaft 20 and the flywheel 31 continue to rotate with inertia; since the rotation resistance of the flywheel 31 will be fed back to the pulling of the webbing 42, the ski fitness device 200 will achieve a fitness effect similar to that of outdoor skiing. . The two brackets 82 of the fitness frame 80 of the ski fitness device 200 of the present invention are vertically erected on the top surface of the board body 81. If the two brackets 82 are changed to be horizontally assembled on the board body 81, the user needs to lie down and sit down. Use both hands to pull the webbing 42 back and forth on the board body 81 simultaneously or alternately, thereby forming the structure of the rowing exercise machine 200 .

The magnetically controlled flywheel 30 in the present invention has a flywheel 31 and at least one reluctance mechanism 34; the flywheel 31 is sleeved on the main shaft 20 to receive the driving force of the main shaft 20 to rotate; the reluctance mechanism 34 includes an electromagnetic The iron 35, a coil 36 and an input wire are fixed on the outer periphery of the flywheel 31 at a distance of a gap through a fixed bracket 37. When the input wire is fed with a direct current, the electromagnet 35 will be formed. An eddy current generates a resistance effect on the rotating flywheel 31. Changing the amount of direct current can change the size of the eddy current, thereby adjusting the rotation resistance of the flywheel 31 to achieve the fitness effect of strengthening the arm muscles. Secondly, the present invention uses two pulleys 40, which are individually combined with one-way bearings 41 with opposite operating directions, and are arranged on the main shafts 20 on both sides of the bracket group 10. Then pulling the webbing 42 around the pulley 40 will drive the The main shaft 20 and the flywheel 31 rotate forward inertially, and the rotation resistance of the flywheel 31 will be fed back to the webbing 42; the winding pulley 40 is also connected to a scroll spring 60 to make it roll. When the webbing 42 stops pulling, The scroll spring 60 will urge the take-up wheel 40 to rotate in the opposite direction to rewind the webbing 42. Therefore, the user can pull the webbing 42 back and forth with both hands at the same time or alternately to achieve the fitness effect of strengthening both hands and arms. Furthermore, in the present invention, the foot base 14 of the bracket set 10 is used to lock the fitness mechanism on the plate body 81 of the fitness frame 80, and two symmetrical brackets 82 are provided on the top surface, and the brackets 82 A guide pulley 83 is provided at the turning point; after passing the free end of the webbing 42 around the inner edge of the bracket 82 and the guide pulley 83, the tail end is connected to a handle 84, and the user can hold the handle 84 with both hands. The webbing 42 is pulled back and forth to achieve a fitness effect similar to skiing or rowing.

In summary, the technical means disclosed in the present invention indeed meet the requirements for invention patents such as "novelty", "progressivity" and "available for industrial utilization". We pray that the Jun Bureau will grant patents to encourage inventions without any restrictions. Sense of morality.

However, the above disclosed drawings and descriptions are only preferred embodiments of the present invention. Modifications or equivalent changes made by those familiar with the art in accordance with the spirit and scope of this case should still be included in the patent application scope of this case.

10:Bracket group

11: Left plate rack

12:Right plate rack

14: Foot base

15: Spacing axis

16:bolt

20:Spindle

21:Bearing seat

22:Bearing

30:Magnetic flywheel

31: Flywheel

34:Magnetic resistance mechanism

35:Electromagnet

37:Fixed bracket

40:Reeling pulley

41:One-way bearing

42: Ribbon

43: Ring groove

50: Linking parts

51: Rod body

52: plate body

60:Scroll spring

61: Inner ring end

62: Outer ring end

70:Protective cover

71: Connector

72: Groove

100: Fitness mechanism with adjustable tensile strength

Claims (4)

A fitness mechanism with adjustable tensile strength, including: A bracket group has a left and right plate frame, each of which is provided with an axis hole and a foot base, and the left and right plate frames are combined into one body with a plurality of spaced shafts and bolts; A main shaft passes through a bearing seat and a bearing, passes through and pivots in the shaft hole of the bracket group; A magnetically controlled flywheel includes a flywheel and at least one reluctance mechanism. The flywheel has a central hole to be sleeved on the main shaft, and allows the flywheel to receive the drive of the main shaft and rotate; the reluctance mechanism includes an electromagnet , a coil and an input line, which are fixed on one side of the bracket group through a fixed bracket, and are placed on the outer periphery of the flywheel with a gap, so that the input line is fed with a direct current. An eddy current is generated and creates a resistance effect on the rotating flywheel; The two pulleys are respectively assembled on the main shaft on the left and right sides of the bracket group through one-way rotating components with opposite operating directions to each other. An annular groove and a webbing are recessed on the outer periphery of the pulleys for winding. on the ring groove, and pulling the free end of the webbing individually will cause the take-up wheel to rotate; Two linking parts, each of which has a connected rod body and a disk body. The disk system is assembled at the outer end of the pulley so that the linking part can rotate synchronously with the pulley; Two scroll springs are individually sleeved on the rod body of the linking member, and their inner ring ends are fixed on the outer edge of the rod body; Two protective covers are respectively assembled on the bracket group through a connecting seat, and are set on the outer edge of the scroll spring, and the outer ring end of the scroll spring is fixed on the inner edge of the protective cover within the provided recess; and By changing the input current of the reluctance mechanism, the eddy current formed will change the resistance of the flywheel rotation; once the free end of the webbing is pulled, the pulley will drive the spindle and flywheel to rotate forward, then The rotational resistance of the flywheel will be fed back to the pulling of the webbing, thereby achieving the fitness effect of adjusting the tensile strength; due to the connection of the linkage, the winding pulley will also drive the inner ring end of the scroll spring to roll, and when stopped When the webbing is pulled, the kinetic energy accumulated in the scroll spring will cause it to rewind, and at the same time drive the take-up wheel to rotate in the opposite direction to rewind the webbing. The spindle and flywheel will continue to rotate due to the action of the one-way rotating component. Maintain the rotation of inertia. The fitness mechanism with adjustable tensile strength as described in item 1 of the patent application, wherein the one-way rotating component includes a one-way bearing. The fitness mechanism with adjustable tensile strength as described in item 1 of the patent application further includes a fitness frame, which has a plate body that can stand on the ground and two symmetrically arranged brackets on the top surface of which are assembled. , the turning point of the bracket is individually equipped with a guide pulley; lock the foot of the bracket group on the plate body, and then pass the free end of the webbing around the inner edge of the bracket and the guide pulley, The tail end is connected with a handle, and the user can hold the handle with both hands and pull the webbing back and forth for fitness activities. The fitness mechanism with adjustable tensile strength as described in item 3 of the patent application further includes a control unit installed on the fitness frame, which has a human-machine interface and a rectification component, and is connected to an external power supply With the input line of the magnetic resistance mechanism, the user can input the desired resistance value through the human-machine interface to adjust the strength of the fitness tension.

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