A pulling pump motor for fitness equipment

Abstract

The present invention discloses a fitness equipment pulling pump motor, comprising a mounting shaft, a rotor and a stator; a rotating wheel is provided on one side of the rotor; the stator is evenly distributed with mounting bosses extending in a radial direction; the mounting bosses are movably hinged with a movable iron core; the movable iron core is provided with a spiral groove; the stator is provided with a first wire frame and a second wire frame; a stator winding is provided between the first wire frame and the second wire frame; the second wire frame is slidably provided with a cam ring; the cam ring is provided with a guide rod; the guide rod is provided with a lever extending in a radial direction; the end of the lever is movably embedded in the corresponding spiral groove; the cam ring is provided with a cam groove; the inner circumferential wall of the rotor is evenly distributed with magnetic steel; the rotor is provided with a driving ring; the driving ring is provided with a bayonet; the bayonet is movably embedded in the cam groove; when the rotor rotates, the cam ring is driven to slide back and forth through the cooperation of the bayonet and the cam groove, so that the movable iron core is reciprocatingly deflected; it is beneficial to improve the linear smoothness of the output resistance torque of the pulling pump, improve the use feel of the pulling pump, and provide a better use experience.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a pulling pump motor for fitness equipment. Background Art

[0002] At present, the motors equipped in fitness pull pumps are usually permanent magnet synchronous motors. In the operation mechanism of this motor, due to the attraction of the magnetic steel to the stator core, the phenomenon of cogging torque is inevitable.

[0003] When the fitness pull pump is in use, affected by the cogging torque, the resistance torque it provides will fluctuate periodically with the same number of magnetic pole pairs. This periodic fluctuation will have a significant negative impact on the performance of the fitness pull pump. Specifically, it makes it difficult for the rotor of the fitness pull pump motor to provide a sufficiently linear and smooth resistance torque.

[0004] For users, this unstable resistance torque will greatly reduce their fitness experience during exercise. For example, when users are doing strength training and other exercises that require stable resistance, the periodic fluctuation of resistance torque may lead to poor training results and fail to accurately achieve the expected exercise intensity and rhythm. Moreover, the unstable resistance feeling will also make users feel uncomfortable during use, and may even affect their trust in the fitness pull pump and their willingness to continue using it.

[0005] In summary, the permanent magnet synchronous motor used in the existing fitness pull pump causes periodic fluctuations in the resistance torque due to the tooth slot torque, which in turn makes the rotor unable to provide linear and smooth resistance torque, seriously affecting the user's fitness experience. A new technical solution is urgently needed to solve this problem. Summary of the invention

[0006] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a fitness equipment pulling pump motor to achieve the purpose of reducing the tooth groove torque, which is beneficial to improving the linear smoothness of the pulling pump output resistance torque, improving the use feel of the pulling pump, and providing a better user experience.

[0007] To achieve the above object, the specific scheme of the present invention is as follows:

[0008] A pulling pump motor for fitness equipment comprises a mounting shaft, a rotor rotatably sleeved on one end of the mounting shaft, and a stator fixedly sleeved on the mounting shaft and located in the rotor;

[0009] A rotating wheel is provided on one side of the rotor; mounting bosses extending radially are evenly distributed along the circumference of the stator; a movable iron core is movably hinged on the mounting boss; a spiral groove is provided on the hinged contact surface of the movable iron core; a first wire frame is provided on one side of the stator, and a second wire frame is provided on the other side; a stator winding is provided between the first wire frame and the second wire frame at a position corresponding to each mounting boss; a cam ring is slidably provided on the second wire frame; a guide rod that movably penetrates the second wire frame and then movably penetrates into the stator is provided at a position corresponding to each mounting boss of the cam ring; a shifting rod extending radially is provided on the guide rod; the end of the shifting rod is movably embedded in the corresponding spiral groove; a cam groove is provided on the inner peripheral wall of the cam ring;

[0010] The inner wall of the rotor is evenly distributed with magnetic steel along the circumferential direction; the inner wall of the rotor is provided with a driving ring; the driving ring is provided with a bayonet; the bayonet is movably embedded in the cam groove; when the rotor rotates, the bayonet cooperates with the cam groove to drive the cam ring to slide back and forth, so that the movable iron core reciprocates and swings.

[0011] Optionally, the cam groove includes a plurality of groove units adjacent to each other end to end, each groove unit includes a first section, a first inclined section, a second section and a second inclined section connected in sequence; the first section and the second section are parallel to each other, and the first inclined section and the second inclined section are symmetrically arranged about the second section.

[0012] Optionally, a C-shaped hinge groove is provided at the end of the mounting boss, the movable iron core is provided with a hinged shaft platform, the hinged shaft platform is movably embedded in the hinge groove, and the spiral groove is provided on the hinged shaft platform.

[0013] Optionally, both the first wire frame and the second wire frame are provided with sliding holes, and both ends of the movable iron core are provided with sliding shafts, and the sliding shafts are movably embedded in the corresponding sliding holes.

[0014] Optionally, when the pin is in the first section, the movable iron core remains in a non-deflected state; when the pin is in the first inclined section, the movable iron core gradually deflects in the same direction as the rotor rotation direction; when the pin is in the second section, the movable iron core remains in a deflected state; when the pin is in the second inclined section, the movable iron core gradually swings back to a non-deflected state in the direction opposite to the rotor rotation direction.

[0015] Optionally, a heat dissipation gap is formed between the side wall of the mounting boss and the stator winding.

[0016] Optionally, an air pump is provided on the inner side wall of the first wire frame, and the air pump is evenly distributed with connecting rods corresponding to the guide rods along the circumferential direction; the stator is provided with a guide hole corresponding to each guide rod, the guide rod slides into the corresponding guide hole, and the connecting rod slides into the corresponding guide hole and is fixedly connected to the guide rod; an air chamber is formed between the guide rod, the second wire frame, the guide hole and the connecting rod; the connecting rod and the guide rod are both provided with a pump air channel connected to the air chamber; an exhaust one-way valve is provided in the pump air channel;

[0017] A cooling channel connected to the corresponding air chamber is provided at a position corresponding to each mounting boss in the stator, and the cooling channel is connected to the heat dissipation gap.

[0018] Optionally, the air pump includes a pump body and a piston; the piston is slidably arranged on the pump body and encloses a pump chamber with the pump body; an air intake one-way valve is provided on the piston; a connecting rod is fixedly connected to the side of the piston facing away from the pump body; the pump air channel passes through the connecting rod along the axial direction of the connecting rod and is connected to the pump chamber.

[0019] Optionally, a avoidance hole is provided through the stator at a position corresponding to each shifting rod.

[0020] Optionally, both ends of the mounting shaft are equipped with detachable connection limit members.

[0021] The beneficial effects of the present invention are as follows: the present invention hinges a movable iron core on the mounting boss of the stator, and when the rotor drives the driving ring to rotate, the latch moves along the trajectory of the cam groove, thereby driving the cam ring to slide back and forth, and the cam ring drives each lever to slide back and forth through each guide rod, and each lever cooperates with the spiral groove of the movable iron core respectively, thereby driving the movable iron core to deflect back and forth, so that the distance between the front end of the magnetic steel in the rotor and the next movable iron core is reduced, and the attraction (power) between the magnetic steel and the next movable iron core in the rotation direction is increased, and the distance between the rear end of the magnetic steel and the current movable iron core is increased, and the attraction (resistance) between the magnetic steel and the current movable iron core in the opposite direction of rotation is reduced, so as to achieve the purpose of reducing the tooth slot torque, which is beneficial to improving the linear smoothness of the output resistance torque of the pull pump, improving the use feel of the pull pump, and providing a better use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0024] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0025] Figure 4 It is a structural schematic diagram of the movable iron core of the present invention when it is in a non-deflected state;

[0026] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0027] Figure 6 It is a structural schematic diagram of the movable iron core of the present invention when it is in a deflected state;

[0028] Figure 7 yes Figure 6 A partial enlarged view of point C in the middle;

[0029] Figure 8 It is a cross-sectional schematic diagram of a partial structure of the present invention;

[0030] Fig. 9 is a cross-sectional schematic diagram of a stator of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the cooperation between the drive ring and the cam ring of the present invention;

[0032] Fig.11 It is a three-dimensional diagram of the movable iron core of the present invention;

[0033] Description of reference numerals: 1, mounting shaft; 11, threading hole; 2, rotor; 21, rotating body; 22, side cover; 23, rotating wheel; 24, magnetic steel; 25, driving ring; 251, bayonet; 3, stator; 31, first ring body; 32, second ring body; 321, guide hole; 322, cooling channel; 323, avoidance hole; 33, mounting boss; 331, hinge groove; 34, movable iron core; 341, hinged shaft platform; 342, spiral groove; 343, sliding shaft; 3 5. First wire rack; 36. Second wire rack; 37. Stator winding; 38. Slide hole; 4. Cam ring; 41. Guide rod; 42. Push rod; 43. Cam groove; 431. First section; 432. First inclined section; 433. Second section; 434. Second inclined section; 5. Air pump; 51. Pump body; 52. Piston; 53. Connecting rod; 54. Intake check valve; 55. Pump cavity; 6. Air chamber; 61. Pump air channel; 62. Exhaust check valve; 7. Limiting member. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0035] like Figures 1 to 11 As shown, a fitness equipment tension pump motor described in this embodiment includes a mounting shaft 1, a rotor 2 rotatably sleeved on one end of the mounting shaft 1, and a stator 3 fixedly sleeved on the mounting shaft 1 and located in the rotor 2;

[0036] The mounting shaft 1 is penetrated by a threading hole 11 for the lead-in of the motor; the rotor 2 comprises a rotating body 21 and side covers 22 arranged on both sides of the rotating body 21; the rotating body 21 and the two side covers 22 enclose a containing space, and the stator 3 is located in the containing space; the side cover 22 on one side of the rotor 2 is provided with a rotating wheel 23; in actual application, the traction rope is wound around the rotating wheel 23, and the user can drive the rotating wheel 23 and the rotor 2 to rotate by pulling the traction rope;

[0037] The stator 3 includes a first ring body 31 and a second ring body 32 coaxially connected to the first ring body 31; the outer peripheral wall of the second ring body 32 is uniformly distributed along the circumferential direction with mounting bosses 33 extending in the radial direction; each mounting boss 33 is movably hinged with a movable iron core 34; the number of mounting bosses 33 can be freely set according to design requirements, such as setting twelve mounting bosses 33 uniformly distributed along the circumferential direction; a first wire frame 35 is fixed on one side of the stator 3, and a second wire frame 36 is fixed on the other side;

[0038] The hinged contact surface of the movable iron core 34 is provided with a spiral groove 342; a stator winding 37 is provided between the first wire frame 35 and the second wire frame 36 at a position corresponding to each mounting boss 33; a cam ring 4 is slidably provided on the side of the second wire frame 36 facing away from the stator 3; a guide rod 41 that movably penetrates the second wire frame 36 and then movably penetrates into the stator 3 is provided at a position corresponding to each mounting boss 33 of the cam ring 4; a lever 42 extending radially is provided on each guide rod 41; the end of the lever 42 is movably embedded in the corresponding spiral groove 342, and the lever 42 reciprocates along the trajectory of the spiral groove 342, thereby driving the movable iron core 34 to reciprocate through the lever 42; a cam groove 43 is provided on the inner peripheral wall of the cam ring 4;

[0039] The inner circumferential wall of the rotor 2 is evenly distributed with magnets 24 along the circumferential direction; the number of magnets 24 and the number of movable iron cores 34 can be set to be the same; a driving ring 25 is provided on the inner side wall of the rotor 2 close to the second wire frame 36; a bayonet 251 is provided on the side of the driving ring 25 facing the cam ring 4; the bayonet 251 is movably embedded in the cam groove 43; when the rotor 2 rotates, the bayonet 251 cooperates with the cam groove 43 to drive the cam ring 4 to slide back and forth, so that the movable iron core 34 can swing back and forth.

[0040] In this embodiment, a movable iron core 34 is hingedly arranged on the mounting boss 33 of the stator 3. When the rotor 2 drives the driving ring 25 to rotate, the latch 251 moves along the trajectory of the cam groove 43, thereby driving the cam ring 4 to slide back and forth. The cam ring 4 drives the respective levers 42 to slide back and forth through the respective guide rods 41. The respective levers 42 respectively cooperate with the spiral grooves 342 of the movable iron core 34 to drive the movable iron core 34 to deflect back and forth, so that the distance between the front end of the magnetic steel 24 in the rotor 2 and the next movable iron core 34 is reduced, and the attraction (power) between the magnetic steel 24 and the next movable iron core 34 in the rotation direction is increased. By increasing the distance between the rear end of the magnetic steel 24 and the current movable iron core 34, the attraction (resistance) between the magnetic steel 24 and the current movable iron core 34 in the opposite direction of the rotation direction is reduced, so as to achieve the purpose of reducing the cogging torque, which is beneficial to improving the linear smoothness of the output resistance torque of the pulling pump, improving the use feel of the pulling pump, and providing a better use experience.

[0041] like Figures 2 to 11As shown, in the present embodiment, a pull pump motor for fitness equipment, in some embodiments, the cam slot 43 includes a plurality of slot units adjacent to each other, each slot unit includes a first section 431, a first inclined section 432, a second section 433, and a second inclined section 434 connected in sequence; the first section 431 and the second section 433 are parallel to each other, and the first inclined section 432 and the second inclined section 434 are symmetrically arranged with respect to the second section 433. Specifically, when the bayonet 251 is located in the first section 431, the movable iron core 34 remains in a non-deflected state, such as Figure 4 and Figure 5 As shown, the center line of the movable iron core 34 is located in the radial direction of the stator 3, and the resistance torque output by the motor is in a linear state; when the bayonet 251 is located in the first inclined section 432, the movable iron core 34 gradually deflects in the same direction as the rotation direction of the rotor 2, that is, there is an angle between the center line of the movable iron core 34 and the radial direction of the stator 3; when the bayonet 251 is located in the second section 433, the movable iron core 34 remains in the deflected state, as shown in FIG. Figure 6 and Figure 7 As shown, the center line of the movable iron core 34 and the radial direction of the stator 3 are kept at a certain angle; when the bayonet 251 is located in the second inclined section 434, the movable iron core 34 gradually swings back to a non-deflected state in the direction opposite to the rotation direction of the rotor 2, that is, the movable iron core 34 changes from a deflected state to a non-deflected state. Initially, the bayonet 251 is located in the first section 431; the bayonet 251 enters the first inclined section 432 along the first section 431, enters the second section 433 through the first inclined section 432, then enters the second inclined section 434 through the second section 433, and then enters the first section 431 of the next slot unit from the second inclined section 434, and passes through each slot unit in turn along the circumferential direction, so that the cam ring 4 slides back and forth.

[0042] Combination Figures 4 to 7 , Fig.10 That is to say, when the bayonet 251 moves along the first section 431 and enters the first inclined section 432 from the first section 431, the bayonet 251 cooperates with the first inclined section 432, so that the cam ring 4 slides, and the lever 42 moves along the trajectory of the spiral groove 342, so that the movable iron core 34 deflects in the same direction as the rotation direction. When the current magnetic steel 24 and the movable iron core 34 are staggered by half, that is, half of the area of ​​the movable iron core 34 is opposite to the current magnetic steel 24, and the other plate area is staggered with the current magnetic steel 24, the bayonet 251 enters the second section 433 from the first inclined section 432, that is, the deflection of the movable iron core 34 is completed, as shown in FIG. Figure 6 and Figure 7As shown, when the next magnetic steel 24 rotates to be opposite to a part of the active iron core 34, due to the deflection of the active iron core 34, the distance between the active iron core 34 and the next magnetic steel 24 is reduced, and the distance between the active iron core 34 and the current magnetic steel 24 is increased, thereby increasing the attraction between the next magnetic steel 24 and the active iron core 34 in the direction of rotation, while reducing the attraction between the active iron core 34 and the current magnetic steel 24 in the opposite direction of rotation; compared with the existing motor with a fixed iron core structure, the reduction of resistance and the increase of power reduce the resistance that the active iron core 34 needs to overcome in the process of crossing the gap between adjacent magnetic steels 24, thereby reducing the resistance torque output fluctuation caused by the cogging torque, improving the use feel of the pull pump, and providing a better user experience;

[0043] When the other half of the movable iron core 34 is completely opposite to the next magnetic steel 24, the pin 251 enters the second inclined section 434 from the second section 433, causing the movable iron core 34 to swing back. When the movable iron core 34 is completely opposite to the next magnetic steel 24, the pin 251 enters the first section 431 of the next slot unit through the second inclined section 434. As the pin 251 rotates, the pin 251 moves along the trajectory of the next slot unit.

[0044] like Figure 8 , Fig. 9 and Fig.11 As shown, in the present embodiment, a pull pump motor for fitness equipment is provided. In some embodiments, a C-shaped hinge groove 331 is provided at the end of the mounting boss 33, and a hinged shaft platform 341 is provided at the movable iron core 34. The hinged shaft platform 341 is movably embedded in the hinge groove 331, and a spiral groove 342 is provided at the hinged shaft platform 341. In the present embodiment, the hinge groove 331 and the hinged shaft platform 341 are provided to cooperate, so that the movable iron core 34 is more reliably hinged on the mounting boss 33.

[0045] like Figure 5 and Figure 7 As shown, in the present embodiment, a pull pump motor for fitness equipment is provided. In some embodiments, the first wire frame 35 and the second wire frame 36 are provided with a slide hole 38, and both ends of the movable iron core 34 are provided with a slide shaft 343, and the slide shaft 343 is movably embedded in the corresponding slide hole 38. In the present embodiment, the slide hole 38 and the slide shaft 343 are provided to cooperate, so as to limit and guide the movable iron core 34, so that the yaw motion of the movable iron core 34 is more stable.

[0046] like Figure 8 As shown, in some embodiments of the pull pump motor for fitness equipment described in this embodiment, a heat dissipation gap is formed between the side wall of the mounting boss 33 and the stator winding 37. In this embodiment, by setting the heat dissipation gap, there can be a heat dissipation space between the stator winding 37 and the mounting boss 33, so that the heat generated by the stator winding 37 can be dissipated, the structural reliability is higher, and the operation is more stable;

[0047] like Figure 2 , Figure 3 and Figure 8 As shown, a fitness equipment tension pump motor described in this embodiment, in some embodiments, an air pump 5 is provided on the inner side wall of the first wire frame 35, and the air pump 5 is evenly distributed with connecting rods 53 corresponding to the guide rods 41 along the circumferential direction; the stator 3 is provided with a guide hole 321 corresponding to each guide rod 41, and the guide hole 321 is arranged on the second ring body 32, the guide rod 41 slides into the corresponding guide hole 321, and the connecting rod 53 slides into the corresponding guide hole 321 and is fixedly connected with the guide rod 41; an air chamber 6 is formed between the guide rod 41, the second wire frame 36, the guide hole 321 and the connecting rod 53; the connecting rod 53 and the guide rod 41 are both provided with a pump air channel 61 connected to the air chamber 6; an exhaust one-way valve sheet 62 is arranged in the pump air channel 61; a cooling channel 322 connected to the corresponding air chamber 6 is provided at the position corresponding to each mounting boss 33 in the stator 3, and the cooling channel 322 is arranged on the second ring body 32, and the cooling channel 322 is connected to the heat dissipation gap.

[0048] Specifically, during the reciprocating sliding of the cam ring 4, each guide rod 41 drives the corresponding connecting rod 53 to slide reciprocatingly, so that the air pump 5 pumps air into the air chamber 6 through each pumping air channel 61 and the exhaust one-way valve plate 62, and the gas entering the air chamber 6 is ejected from each cooling channel 322 to the heat dissipation gap, thereby forming a heat dissipation airflow in the heat dissipation gap, dissipating the stator winding 37 and the stator 3, effectively reducing the risk of overheating of the tension pump during long-term use, and the structure has higher reliability and more stable operation.

[0049] like Figure 3 and Figure 8 As shown, a fitness equipment tension pump motor described in this embodiment, in some embodiments, the air pump 5 includes a pump body 51 and a piston 52; the piston 52 is slidably arranged on the pump body 51 and a pump chamber 55 is enclosed between the piston 52 and the pump body 51; an air intake one-way valve plate 54 is provided on the piston 52; the connecting rod 53 is fixedly connected to the side of the piston 52 facing away from the pump body 51; the pump air channel 61 passes through the connecting rod 53 along the axial direction of the connecting rod 53 and is connected to the pump chamber 55. Specifically, during the reciprocating sliding of the cam ring 4, the cam ring 4 drives the piston 52 to slide reciprocatingly through the guide rods 41 and the connecting rods 53. When the piston 52 moves close to the stator 3, the effective volume of the pump chamber 55 increases, the intake check valve 54 opens, and the external cold air enters the pump chamber 55. When the piston 52 moves away from the stator 3, the effective volume of the pump chamber 55 decreases, the intake check valve 54 closes, and the exhaust check valve opens. The cold air in the pump chamber 55 enters the air chamber 6 through the various pump air channels 61, and then is ejected from the air chamber 6 through the various cooling channels 322 into the heat dissipation gap, thereby forming a heat dissipation airflow in the heat dissipation gap to dissipate the stator winding 37 and the stator 3.

[0050] like Figure 2 , Figure 3 , Figure 8 and Fig. 9 As shown, in the present embodiment of the pull pump motor for fitness equipment, in some embodiments, the position of the stator 3 corresponding to each lever 42 is penetrated with an avoidance hole 323. In the present embodiment, the avoidance hole 323 is provided to facilitate the reciprocating motion of the lever 42.

[0051] like Figure 1 and Figure 2 As shown, in the present embodiment, a pull pump motor for fitness equipment, in some embodiments, both ends of the mounting shaft 1 are detachably connected with limit members 7. Specifically, the limit member 7 is a nut, which is threadedly connected to the mounting shaft 1, thereby limiting the rotor 2, making it difficult for the rotor 2 to detach from the mounting shaft 1, and the structure is more reliable.

[0052] The above is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. A pull pump motor for fitness equipment, characterized in that: It includes a mounting shaft, a rotor rotatably sleeved on one end of the mounting shaft, and a stator fixedly sleeved on the mounting shaft and located inside the rotor; A rotating wheel is provided on one side of the rotor; mounting bosses extending radially are evenly distributed along the circumference of the stator; a movable iron core is movably hinged on the mounting boss; a spiral groove is provided on the hinged contact surface of the movable iron core; a first bobbin is provided on one side of the stator, and a second bobbin is provided on the other side; stator windings are wound around the first bobbin and the second bobbin at positions corresponding to each mounting boss; a cam ring is slidably provided on the second bobbin; a guide rod movably penetrating the second bobbin and then into the stator is provided at a position corresponding to each mounting boss of the cam ring; a shifting rod extending radially is provided on the guide rod; the end of the shifting rod is movably embedded in the corresponding spiral groove; a cam groove is provided on the inner peripheral wall of the cam ring; The inner wall of the rotor is evenly distributed with magnetic steel along the circumferential direction; the inner wall of the rotor is provided with a driving ring; the driving ring is provided with a bayonet; the bayonet is movably embedded in the cam groove; when the rotor rotates, the bayonet cooperates with the cam groove to drive the cam ring to slide back and forth, so that the movable iron core reciprocates and swings.

2. A fitness equipment pull pump motor according to claim 1, characterized in that: The cam groove includes a plurality of groove units adjacent to each other, each groove unit includes a first section, a first inclined section, a second section and a second inclined section connected in sequence; the first section and the second section are parallel to each other, and the first inclined section and the second inclined section are symmetrically arranged about the second section.

3. A fitness equipment pull pump motor according to claim 1, characterized in that: A C-shaped hinge groove is arranged at the end of the mounting boss, a hinged shaft platform is arranged at the movable iron core, the hinged shaft platform is movably embedded in the hinge groove, and a spiral groove is arranged on the hinged shaft platform.

4. A fitness equipment pull pump motor according to claim 1, characterized in that: The first wire frame and the second wire frame are both provided with sliding holes, and both ends of the movable iron core are provided with sliding shafts, which are movably embedded in the corresponding sliding holes.

5. A fitness equipment pull pump motor according to claim 2, characterized in that: When the latch is in the first section, the movable iron core remains in a non-deflected state; when the latch is in the first inclined section, the movable iron core gradually deflects in the same direction as the rotor rotation direction; when the latch is in the second section, the movable iron core remains in a deflected state; when the latch is in the second inclined section, the movable iron core gradually swings back to a non-deflected state in the direction opposite to the rotor rotation direction.

6. A fitness equipment pull pump motor according to claim 1, characterized in that: A heat dissipation gap is formed between the side wall of the mounting boss and the stator winding.

7. A fitness equipment pull pump motor according to claim 6, characterized in that: An air pump is provided on the inner side wall of the first wire frame, and connecting rods corresponding to the guide rods are evenly distributed along the circumference of the air pump; a guide hole is provided on the stator corresponding to each guide rod, and the guide rod slides into the corresponding guide hole, and the connecting rod slides into the corresponding guide hole and is fixedly connected to the guide rod; an air chamber is formed between the guide rod, the second wire frame, the guide hole and the connecting rod; the connecting rod and the guide rod are both provided with a pump air channel connected to the air chamber; an exhaust one-way valve is provided in the pump air channel; A cooling channel connected to the corresponding air chamber is provided at a position corresponding to each mounting boss in the stator, and the cooling channel is connected to the heat dissipation gap.

8. A fitness equipment pulling pump motor according to claim 7, characterized in that: The air pump includes a pump body and a piston; the piston is slidably arranged on the pump body and encloses a pump chamber with the pump body; an air intake one-way valve is arranged on the piston; a connecting rod is fixedly connected to the side of the piston facing away from the pump body; and a pump air channel penetrates the connecting rod along the axial direction of the connecting rod and is connected to the pump chamber.

9. The pull pump motor for fitness equipment according to claim 1, characterized in that: The stator is provided with an avoidance hole at the position corresponding to each shifting rod.

10. A pulling pump motor for fitness equipment according to claim 1, characterized in that: Both ends of the mounting shaft can be detachably connected with limit pieces.

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