TWI741815B - Torque detection device of fitness equipment - Google Patents

Abstract

A torque detection device of fitness equipment, the fitness equipment contains: a frame, a flywheel rotatably connected on the frame, and the torque detection device. The torque detection device includes a loading sensor and a magnetoresistance mechanism. A magnet holder of the magnetoresistance mechanism is rotatably connected on a fixer by way of a rotary shaft and has multiple magnets. A steel cable is configured to actuate a magnet holder to rotate along the rotary shaft so as to change a position of a respective one magnet of multiple magnets relative to a flywheel, and an area of the respective one magnet which covers the flywheel is changeable, thus changing a magnetoresistance of the respective one magnet of the magnet holder when the flywheel rotates. The loading sensor is configured to detect a reaction force of a magnetoresistance mechanism so as to calculate a torque value of the flywheel.

Description

Torque detecting device for fitness equipment

The present invention is a torsion detection device for fitness equipment, in particular, it uses a steel cable to drive the displacement of the magnet holder to change the area of the magnet of the magnet holder covering the flywheel, and the area of the magnet covering the flywheel is changed and changed. When the flywheel is rotating, it is subject to the magnetic resistance of the magnet of the magnet holder, and a load sensor detects the reaction force of the magnetoresistive mechanism and calculates the torque value of the flywheel.

Although the nature of use of indoor sports equipment is different from outdoor sports, at this stage, indoor sports equipment in various fields can show the training of various muscles of the body, so that consumers can perform physical training even at home or indoors to achieve fitness For the purpose of training, indoor sports equipment such as treadmills, steppers, rowing machines, and exercise bikes have been widely preferred by consumers. At present, fitness equipment equipped with flywheels are usually also equipped with torque detection. The torque detection device is used to apply resistance to the flywheel, and the athlete can adjust the torque value according to their own sports needs. Most of the existing torque detection devices are contact adjustment structures, so under long-term use, It is easy to cause the device to wear and cause the lack of inaccurate torque value detection.

The main purpose of the present invention is to provide a torsion detection device for fitness equipment, especially the use of a steel cable to drive the displacement of the magnet holder to change the area of the magnet of the magnet holder covering the flywheel, and the area of the magnet covering the flywheel changes. It is possible to change the size of the magnetic resistance of the magnet of the magnet holder when the flywheel rotates, and a load sensor detects the reaction force of the magnetoresistive mechanism and calculates the flywheel torque value.

Please refer to the first figure. The present invention provides a torsion detection device 10 for fitness equipment, in particular, a steel cable 6 is used to drive the displacement of the magnet base 54 to change the distance between the magnet 57 of the magnet base 54 and the flywheel 91. The relative position of the flywheel 91 is changed by changing the area of the magnet 57 covering the flywheel 91, and the area of the magnet 57 covering the flywheel 91 changes, which can change the size of the magnetic attraction resistance of the magnet 57 of the magnet holder 54 when the flywheel 91 rotates. The load sensor 1 can detect the reaction force of the magnetoresistive mechanism 5, and then calculate the torque value of the flywheel 91.

Please refer to the first and fourth figures. The fitness equipment shown in the embodiment in the figure includes a frame 9, on which a flywheel 91, a torque detection device 10 and a rotating shaft C are pivoted. Adjusting rod 92.

Please refer to the second figure. The torque detection device 10 includes a load sensor 1 and a magnetoresistive mechanism 5. The load sensor 1 is provided with a first end 11 and a second end 12, and the load sensor 1 has a first end 11 and a second end 12. One end 11 is provided with a first positioning hole 110, and the second end 12 of the load sensor 1 is provided with a second positioning hole 120. The lower connecting seat 2 has a positioning slot 21 and a through hole 22 communicating with the positioning slot 21 , A plurality of through holes 231, 232 and a screw hole 24, the screw hole 24 on the lower connecting seat 2 is located between the plurality of through holes 231, 232 two-phase interval, the first end 11 of the load sensor 1 It penetrates through the positioning slot 21 of the lower connecting seat 2, and uses a fixing member 25 to extend to the through hole 22 communicating with the positioning slot 21 and screw into the first positioning hole 110 of the load sensor 1, and a hexagonal bolt 26 The mating nut 27 is screwed on the screw hole 24 of the lower connecting seat 2. An upper connecting seat 3 has a positioning groove 31, a through hole 32 communicating with the positioning groove 31, and a plurality of positioning screw holes 331, 332. The second end 12 of the load sensor 1 is inserted through the positioning groove 31 of the upper connecting base 3, and another fixing member 34 is used to penetrate to the through hole 32 communicating with the positioning groove 31 of the upper connecting base 3 and screwed in In the second positioning hole 120 of the load sensor 1, a plurality of washers 41 and 42 can be respectively arranged between the fixing member 25 and the lower connecting seat 2, the other fixing member 34 and the upper connecting seat 3, which can be used to increase the friction surface and reduce Loosening; the magnetic resistance mechanism 5 is provided with a fixed seat body 51, which can be connected to the upper connecting seat 3 on the lower side of the fixed seat body 51 through a plurality of fixing members 52, one end of the fixed seat body 51 is provided with a A roller 53 and a magnet holder 54 are movably pivotally connected to the fixed base 51 by a rotating shaft 55. The magnet holder 54 has an accommodating space 56. The accommodating space 56 has a plurality of The other end of the fixed base body 51 is connected to one end of the pair of connecting rod groups 58, and the other end of the connecting rod group 58 is connected to the lower side of the magnet base 54. The shaft between the connecting rod groups 58 is connected It has a rotating shaft 59, the fixed base body 51, the magnet base 54 and a pair of connecting rod groups 58 jointly form a four-bar linkage mechanism; The rotating shaft 59 between the connecting rod group 58 and the roller 53 of the fixing base 51 are fixed on the adjusting rod 92, as shown in the fourth figure.

Please refer to the first and fourth figures, the torque detection device 10 is inserted into the frame 9 and the plurality of through holes 231, 232 of the lower connecting seat 2 by a plurality of through bolts 7 and reused washers 71 and nuts 72 In combination with the through bolts 7, the accommodating space 56 of the magnet holder 54 can accommodate the periphery of the flywheel 91, and the magnets 57 on the two sides of the accommodating space 56 can be used to generate a magnetic resistance effect on the flywheel 91.

Please refer to the first and fourth figures. When the adjusting rod 92 is rotated based on the axis C by an external force and the steel cable 6 is synchronously pulled to produce displacement, the steel cable 6 synchronously pulls the rotating shaft 59 of the pair of connecting rod groups 58 and the magnet The seat 54 is pivoted with the shaft 55 as the axis, and during the pivoting process, the pair of linkage groups 58 push the magnet seat 54 upwards, so that the relative position between the magnet 57 and the flywheel 91 can be changed by changing the relative position between the magnet 57 and the flywheel 91. Also refer to Figure 5), which can change the size of the magnetic resistance of the magnet 57 of the magnet holder 54 when the flywheel 91 rotates, and the load sensor 1 can detect the reaction force of the magnetoresistive mechanism 5, and then calculate the flywheel 91 torque value.

The first end 11 and the second end 12 of the aforementioned load sensor 1 are combined with the lower connecting seat 2 and the upper connecting seat 3, and the aforementioned mating nut 27 is screwed to the screw hole 24 of the lower connecting seat 2. The hexagonal bolt 26 is Bounded between the lower connecting seat 2 and the upper connecting seat 3, there is a gap H between the top surface of the hexagonal bolt 26 and the upper connecting seat 3. The hexagonal bolt 26 prevents the load sensor 1 from being generated by the fitness equipment due to external gravity pressure. Deformation, as shown in the third figure.

Please refer to another embodiment shown in Figure 6, the magnet base 54 can be provided with a tail end base 541, one end of the aforementioned steel cable 6 can be pivoted to the tail end base 541 of the magnet base 54, and the other end is fixed to On the adjusting rod 92, when the adjusting rod 92 is rotated based on the axis C by the external force and the steel cable 6 is pulled synchronously to produce displacement (refer to the fourth figure at the same time), the steel cable 6 is synchronously pulled the magnet holder 54 to make the magnet holder 54 Pivoting occurs with the rotating shaft 55 as the axis.

In summary, the torsion detection device 10 of the fitness equipment of the present invention uses a steel cable 6 to drive the displacement of the magnet base 54 to change the relative position between the magnet 57 of the magnet base 54 and the flywheel 91, that is, change The area of the magnet 57 covering the flywheel 91 changes. The area of the magnet 57 covering the flywheel 91 changes, which can change the magnetic resistance of the magnet 57 of the magnet holder 54 when the flywheel 91 rotates, and a load sensor 1 can detect To the reaction force of the reluctance mechanism 5, the torque value of the flywheel 91 is then calculated.

10: Torque detection device 1: Load sensor 11: first end 110: The first positioning hole 12: second end 120: second positioning hole 2: Lower connecting seat 21: positioning slot 22: Piercing 231: Through Hole 232: Through Hole 24: screw hole 25: fixed parts 26: Hexagon bolt 27: Nut 3: Upper connecting seat 31: positioning slot 32: Piercing 331: Positioning screw hole 332: Positioning screw hole 34: fixed parts 41: Washer 42: Washer 5: Magnetoresistive mechanism 51: fixed base 52: fixed parts 53: Roller 54: Magnet holder 541: End Block 55: shaft 56: accommodating space 57: Magnet 58: connecting rod group 59: Rotation axis 6: Steel cable 7: Through bolts 71: Washer 72: Nut 9: rack 91: Flywheel 92: adjustment lever C: axis H: gap

Figure 1: A partial three-dimensional view of the torque detection device of the present invention installed on fitness equipment. Figure 2: is a three-dimensional exploded view of the torque detection device of the present invention. The third figure: is a cross-sectional view of the combination of the base, load sensor, and top base of the present invention. The fourth figure: It is a schematic diagram of the present invention using an adjusting rod to pull a steel cable to drive the magnet base, which adjusts the displacement change of the magnetic attraction resistance relative to the flywheel. Figure 5: A schematic diagram of the present invention using a steel cable to drive the magnet base, which is relatively close to the flywheel. Figure 6: is a diagram of another embodiment of the present invention.

10: Torque detection device

2: Lower connecting seat

5: Magnetoresistive mechanism

51: fixed base

52: fixed parts

53: Roller

54: Magnet holder

55: shaft

57: Magnet

58: connecting rod group

59: Rotation axis

6: Steel cable

7: Through bolts

72: Nut

9: rack

91: Flywheel

Claims (6)

A torsion detection device for fitness equipment, wherein the fitness equipment includes a frame on which a flywheel and a torque detection device are pivoted, and the torque detection device includes a load sensor and a magnetoresistive mechanism, It is characterized in that one end of the load sensor is fixed to the upper connecting seat, the upper connecting seat of the combined load sensor is locked to the fixed seat body of the magnetoresistive mechanism, and the other end of the load sensor is fixed to the lower connecting seat. The lower connecting seat combined with the load sensor is fixed on the frame. The load sensor is provided with a first end and a second end. The first end of the load sensor is provided with a first positioning hole, and the second end of the load sensor is provided with a first positioning hole. A second positioning hole is provided. The aforementioned lower connecting seat has a positioning groove, a perforation communicating with the positioning groove, a plurality of through holes and a screw hole, and the screw holes on the lower connecting seat are seated in a plurality of Between the two spaces of the through holes, the first end of the load sensor is penetrated through the positioning slot of the lower connecting seat, and a fixing member is used to penetrate to the through hole communicating with the positioning slot and screwed on the first end of the load sensor. A locating hole, and a hexagonal bolt and a nut are screwed on the screw hole of the lower connecting seat. The upper connecting seat has a locating slot, a perforation communicating with the locating slot, and a plurality of locating screw holes. The second end is pierced through the positioning groove of the upper connecting seat, and another fixing member is used to penetrate to the through hole communicating with the positioning groove of the upper connecting seat and screwed into the second positioning hole of the load sensor. A plurality of washers It can be respectively arranged between the fixed part and the lower connecting seat, and the other fixed part and the upper connecting seat, which can increase the friction surface and reduce looseness; one end of a magnet seat is equipped with a rotating shaft, which can allow the magnet seat to pivot movably Connected to the fixed base body, the other end of the magnet base is provided with a plurality of magnets; a steel cable can make the magnet base take the rotating shaft as the axis of rotation to change the relative position between the magnet and the flywheel, that is, change the magnet covering the flywheel Area change; through the above structure, the area of the magnet covering the flywheel is changed, so that the magnetic resistance of the magnet of the magnet holder when the flywheel rotates can be changed. The load sensor can detect the reaction force of the magnetoresistive mechanism, and then Calculate the torque value of the flywheel. The torsion detecting device for fitness equipment according to claim 1, wherein one end of the fixed base of the magnetoresistive mechanism is connected to one end of a pair of connecting rod groups, and the other end of the connecting rod group is connected To the lower side of the magnet seat, the rotating shaft between the connecting rod groups is provided with a rotating shaft, and the fixed seat body, the magnet seat and a pair of connecting rod groups jointly form a four-bar linkage mechanism. The torsion detection device for fitness equipment according to claim 2, wherein an adjustment rod that uses an axis rotation is pivoted on the frame; one end of the fixed base of the magnetoresistive mechanism is provided with a roller, The magnet base has an accommodating space, and the two sides of the accommodating space have the aforementioned plurality of magnets; the aforementioned steel cable has one end fixed to the fixed base body of the magnetoresistive mechanism, and the other end is wound around the connecting rod group in sequence The rotating shaft between the fixed seat body and the roller shaft are fixed on the adjusting rod. The torsion detecting device for fitness equipment according to claim 3, wherein the torsion detecting device uses a plurality of through bolts to pass through a plurality of through holes of the frame and the lower connecting seat, and reuse washers and nuts Combined and fixed with the through bolts, the accommodating space of the magnet base can accommodate the periphery of the flywheel, and the magnets on the two sides of the accommodating space can be used to generate a magnetic resistance effect on the flywheel. The torsion detecting device for fitness equipment according to claim 1, wherein the hexagonal bolts on the screw holes of the lower connecting seat with the matching nut are bounded between the lower connecting seat and the upper connecting seat, and the hexagonal bolts top There is a gap between the surface system and the upper connecting seat, and the hexagonal bolt system can prevent the fitness equipment from deforming the load sensor due to external gravity pressure. The torsion detecting device for fitness equipment according to claim 2, wherein an adjusting rod is pivoted on the frame with an axis rotation; the magnet base can be provided with a tail end base, and one end of the steel cable is It can be pivoted on the tail end of the magnet base, and the other end is fixed on the adjusting rod. When the adjusting rod rotates based on the shaft center by the external force and synchronously pulls the steel cable to produce displacement, the steel cable system pulls the magnet base synchronously to make the magnet The seat pivots around the axis of rotation.

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