CN201127812Y - Magnetic resistance control structure of body-building machine - Google Patents

Abstract

The utility model relates to a magnetic resistance control structure of body-building machine, especially, indicate the magnetic resistance control structure of an accurate change motion resistance, it contains the main shaft, a rotor, a stator, the sliding block group, a controller, adjustment mechanism, the drive pin of controller just is direct gomphosis on the round hole of aforementioned sliding block group, the swing arm end that shifts and drive the magnetic conduction iron sheet toward the centre of a circle as the sliding block group moves toward radial inward movement, its clearance can be greater than aforementioned clearance, reach the adjustment that changes the resistance size, and the drive pin is the rigidity and can not the component of warping, with the drive pin with direct interlock sliding block group, can adjust two magnetic conduction iron sheets on the stator and the size of the air gap between the magnetic isolation ring fairly accurately, in order to reach because of magnetic flux density changes produced motion resistance.

Description

Reluctance Control Structure of Fitness Machine

technical field

The utility model relates to a control structure, in particular to a reluctance control structure which can accurately change motion resistance and is suitable for fitness machines.

Background technique

Known U.S.Pat.No.6719107, this patent is to drive the motor in the gearbox by a generator motor, and its control resistance response is relatively slow. For example, it may take about 20 seconds for the user to directly adjust the resistance from LEVEL1 to LEVEL20. Even if the time can be shortened, the resolution of the resistance will be relatively poor.

Compared with U.S.Pat.No.6084325, this patent is a direct input current to drive the motor. Its response to adjusting resistance is faster and the resolution of its resistance will be higher because of current control, or it is more accurate. U.S.Pat.No. The gear 33 in the gear box of the 6719107 patent is directly connected to the rod 34, and the rod 34 is connected in series with the rod 21 on the body. There is a variable resistor (detection resistance size) in the gear box, and its parts It will be damaged due to long-term use. If maintenance is required, the entire gear box must be disassembled and then the rod 34 can be removed to replace the damaged parts, which is quite inconvenient in maintenance.

Also known U.S.Pat.No.5711404, this patent utilizes two ropes 72 to pull the brake pad 51, because the rope 72 is a soft material, if the gap between the magnet on the brake pad 51 and the magnetic isolation ring is larger than During the suction of the magnet, the brake pad just cannot return to the initial state, so it is necessary to install a spring 53 to assist the recovery of the brake pad 51.

The reference figure numbers used in the above-mentioned known patents are all directly taken from the figure numbers used in the content of the patent specification.

Utility model content

The purpose of the utility model is to provide a magnetic resistance control structure of a fitness machine, which can accurately adjust the air gap between the two magnetic guide pieces on the stator and the magnetic isolation ring, and then accurately adjust and change the size of the motion resistance.

For reaching above-mentioned purpose, the utility model adopts following scheme:

A reluctance control structure for a fitness machine, comprising: a main shaft, which is directly arranged on the base body of the fitness machine; The magnetic ring has a bearing on the shaft hole of the rotor side wall, and the rotor can be pivoted on the main shaft and rotates; a stator is formed by combining inner and outer disks, and its outer diameter is slightly smaller than that of the magnetic isolation ring of the aforementioned rotor. Inner diameter, the stator can be fixed on the aforementioned main shaft; an adjustment mechanism, the magnet guide piece is pivotally arranged in the positioning hole of the inner disk with a positioning pin, the pivot joint of the magnet guide piece is a positioning end, and the magnet guide piece is provided with a permanent magnet, The other end of the magnet guide piece is the swing arm end, and a fixed rod is extended inwardly at the end of the swing arm end, and the end of the fixed rod is provided with rollers; a slider group, its left and right sides are provided with guide rails, and the outside of the guide rails There is a track groove on the side wall, and a round hole is set in the middle and lower part of the slider group. The roller of the aforementioned adjustment mechanism is just located in the guide rail, and the above-mentioned fixed rod passes through the rail groove of the slider group. ; a controller, which is arranged on the outer surface of the aforementioned stator, is provided with a transmission pin, and the transmission pin is combined with the aforementioned slider group, so that the slider group is actuated by the controller;

When the transmission pin of the controller drives the slider group to move, the air gap between the permanent magnet and the magnetic isolation ring can be changed, and the adjustment of changing the resistance can be achieved.

Positioning blocks that limit the swing angle of the swing arm end are respectively provided on the outer surface of the swing arm end.

The inside of the controller contains transmission components such as a motor, a reduction gear set, and a row of teeth. The controller can be directly fixed on the outer surface of the stator. When the controller fails, the internal parts of the controller can be directly replaced in maintenance without having to It is quite beneficial for maintenance personnel to disassemble the components of the stator and rotor.

The inner and outer discs of the stator are respectively provided with straight slots, and the transmission pins of the aforementioned controller move in the straight slots.

A fixed block is fixed on the outer disk, and its shaft holes are aligned with the shaft holes of the outer disk and the inner disk. The fixed block is integrated with the inner and outer disks with fixing elements. The aforementioned main shaft can penetrate the fixed block, inner, and outer disks. The shaft hole of the outer disk fits with the shaft hole of the fixed block, so that the stator and the main shaft are fixedly connected.

Adopting the above scheme, the utility model mainly utilizes a controller to be arranged on the straight groove of the outer disc of the stator, the transmission pin of the controller can be displaced in a straight line in the straight groove, and the transmission pin of the controller is directly fitted into the circle of a slider group. On the hole, when the transmission pin drives the slider group to make a vertical displacement in the straight groove, the air gap between the permanent magnet and the magnetic isolation ring can be changed, and the adjustment of the resistance can be changed; and because the transmission pin is rigid and will not The deformed element is directly linked with the slider group of the adjustment mechanism by the transmission pin, and the size of the air gap between the second magnetic guide piece on the stator and the magnetic isolation ring can be adjusted quite accurately, so as to achieve adjustment due to the change of the magnetic flux density. Movement resistance.

Description of drawings

Fig. 1 is the three-dimensional exploded view of the utility model;

Fig. 2 is the schematic diagram of the combination of the adjustment mechanism of the present utility model and the slide block group;

Fig. 3 is the combined schematic diagram of the utility model;

Fig. 4 is the combined sectional view of the utility model stator and rotor;

Fig. 5 is the action sectional view of the utility model stator and rotor.

Explanation of main component symbols

1 main shaft 2 rotor 21 magnetic spacer

22 uranium hole 23 bearing 3 stator

31 inner disk 32 outer disk 33 straight groove

34 Straight slot 35 Positioning hole 36 Positioning block

37 uranium holes 38 shaft holes 4 slider groups

41 guide rail 42 rail groove 43 round hole

5 Adjustment mechanism 51, 61 magnet guide piece 52, 62 positioning end

53, 63 Swing arm end 54, 64 Locating pin 55, 65 Fixed rod

56, 66 permanent magnet 57, 67 roller 7 controller

70 positioning column 71 transmission pin 72 power cord

8 fixed block 81 shaft hole 82 fixed element

Detailed ways

Please refer to FIG. 1 to FIG. 5 , the utility model is a reluctance control structure of fitness equipment, which includes a main shaft 1 , a rotor 2 , a stator 3 , a slider group 4 , a controller 7 , and an adjustment mechanism 5 .

The main shaft 1 is directly arranged on the base body of the fitness machine equipment.

A magnetic isolation ring 21 is fixed on the inner rim surface of the rotor 2 , and a bearing 23 is provided on the shaft hole 22 on the side wall of the rotor 2 , and the rotor 2 can be pivoted on the main shaft 1 .

The stator 3 is composed of the inner and outer disks 31, 32 clamped with the adjustment mechanism 5. Its outer diameter is slightly smaller than the inner diameter of the magnetic isolation ring 21 of the aforementioned rotor 2. Straight grooves are respectively provided on the inner and outer disks 31, 32. 33, 34, the fixing block 8 is attached to the outer disc 32, and its shaft hole 81 is aligned with the shaft holes 37, 38 of the outer disc 32 and the inner disc 31, and the fixing block 8 is fixed on the inner and outer discs 31 with the fixing element 82 , 32, the shaft hole 37,38 of main shaft 1 can wear fixed block 8, inside and outside disc 31,32, and fits with the shaft hole 81 of fixed block 8, makes stator 3 and main shaft 1 affixed.

The inner disk 31 is provided with a pair of positioning holes 35 near the outer ring. The magnet guide pieces 51, 61 of the adjustment mechanism 5 are pivotally arranged in the positioning holes 35 of the inner disk 31 with the positioning pins 54, 64. The pivots of the magnet guide pieces 51, 61 Joint is positioning end 52,62, and permanent magnet 56,66 is arranged on this guide magnet sheet 51,61, and the other end of guide magnet sheet 51,61 is swing arm end 53,63, at swing arm end 53,63 end Inwardly extending fixed rods 55,65, the ends of fixed rods 55,65 are provided with rollers 57,67, and the outer inner discs 31 of the swing arm ends 53,63 are each provided with positioning blocks 36, by positioning the swing arm ends 53, 63 swing angles.

The left and right sides of the slider group 4 are provided with guide rails 41 , the outer side walls of the guide rail 41 are provided with rail grooves 42 , and the lower middle of the slider group 4 is provided with a round hole 43 .

The aforementioned rollers 57, 67 are arranged in the guide rail 41 and can slide arbitrarily in the guide rail 41. The fixed rods 55, 65 of the rollers 57, 67 penetrate the rail groove 42 of the slider group 4. When the slider group 4 is vertical to the center of the circle, Displacement, the rollers 57,67 move in the guide rail 41, and the swing arm ends 53,63 of the magnet guide pieces 51,61 can then deviate from the magnetic isolation ring 21 of the rotor 2.

The assembled rotor 2 is linked with the pedals (not shown in the figure) of the fitness machine equipment, and the rotor 2 rotates with the exercise pedals, so that the rotor 2 with the magnetic isolation ring 21 inside also rotates thereupon. An eddy current (eddy current) will be generated between the magnetic isolation ring 21 of the rotor 2 and the permanent magnets 56 and 66 of the stator 3. According to LENZ'S LAW, the magnetic field formed by this eddy current is the direction that resists the change of the original magnetic field. Therefore, it will cause resistance to the movement of the rotor 2, which will serve as the load required by the fitness machine.

Another feature of the present utility model is that a controller 7 is arranged on the outer straight groove 34 of the stator 3 , and the controller 7 is fixed on the outer surface of the stator 3 by a positioning post 70 . This controller 7 internal system contains basic transmission components such as motor, reduction gear group, row of teeth, because this kind of transmission component is a ready-made commodity and is generally used on the fitness machine equipment, so do not describe in detail, this controller 7 and design There is a drive pin 71 for linear displacement in the straight grooves 33, 34, and a power cord 72 for power transmission. The drive pin 71 of the controller 7 is directly fitted into the circular hole 43 of the aforementioned slider group 4, When the transmission pin 71 drives the slider group 4 to make a vertical displacement in the straight grooves 33, 34, it can change the air gap between the permanent magnets 56, 66 and the magnetic isolation ring 21, the gap shown in Figure 4 is the smallest, when The slider group 4 shifts to the center of the circle and drives the swing arm ends 53, 63 of the magnet guide pieces 51, 61 to move radially inward. The gap is shown in FIG. And because the drive pin 71 is a rigid and non-deformable element, the drive pin 71 directly links the slider group 4, and the gap between the two magnetic guide pieces 51, 61 and the magnetic isolation ring 21 on the stator 3 can be adjusted quite accurately. The size of the air gap to achieve movement resistance due to changes in magnetic flux density.

Claims (5)

1. A reluctance control structure of a fitness machine, characterized in that: comprising, a main shaft, which is directly arranged on the base body of the fitness machine equipment; A rotor, the rotor is driven by the force applying mechanism of the fitness machine, a magnetic isolation ring is fixed on the inner rim surface, a bearing is arranged on the shaft hole of the side wall of the rotor, and the rotor can be pivoted on the main shaft and rotated; A stator is formed by combining inner and outer disks, its outer diameter is slightly smaller than the inner diameter of the magnetic isolation ring of the aforementioned rotor, and the stator can be fixed on the aforementioned main shaft; An adjustment mechanism, the magnet guide piece is pivotally arranged in the positioning hole of the inner disk with a positioning pin, the pivot joint of the magnet guide piece is the positioning end, the magnet guide piece is provided with a permanent magnet, and the other end of the magnet guide piece is the swing arm end , a fixed rod is extended inwardly at the end of the swing arm, and a roller is provided at the end of the fixed rod; A slider group, guide rails are provided on the left and right sides of the guide rail, rail grooves are provided on the outer side wall of the guide rail, and a round hole is provided at the middle and lower part of the slider group. The rod goes through the rail groove of the slider group, and the roller can slide freely in the guide rail; A controller is arranged on the outer exposed surface of the aforementioned stator, and it is provided with a transmission pin, and the transmission pin is combined with the aforementioned slider group, so that the slider group is actuated by the controller. 2. The reluctance control structure of an exercise machine as claimed in claim 1, characterized in that: each of the outer surfaces of the swing arm end is provided with a positioning block for limiting the swing angle of the swing arm end. 3. The reluctance control structure of a fitness machine according to claim 1, characterized in that: the controller contains transmission components such as a motor, a reduction gear set, and a row of teeth, and the controller can be directly fixed on the outer surface of the stator. 4. The reluctance control structure of a fitness machine as claimed in claim 1, characterized in that: the inner and outer disks of the stator are respectively provided with straight slots, and the transmission pin of the aforementioned controller moves in the straight slots. 5. The reluctance control structure of an exercise machine as claimed in claim 1, characterized in that: a fixed block is fixed on the outer disk, and its shaft hole is aligned with the shaft holes of the outer disk and the inner disk, and the fixed block is fixed The block and the inner and outer discs are consolidated into one body, and the aforementioned main shaft can penetrate the shaft holes of the fixed block, the inner and outer discs, and fit with the shaft holes of the fixed block, so that the stator and the main shaft are fixedly connected.

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