Motor, traction assembly and fitness equipment thereof

Abstract

The utility model discloses a motor, a traction assembly and fitness equipment thereof, and belongs to the technical field of motors, the motor comprises a base, a casing rotatably mounted on the base, a stator assembly mounted on the base, and a rotor assembly rotatably mounted on the base and matched with the stator assembly; a mounting groove and a winding groove are formed in the machine shell, the stator assembly and the rotor assembly are both located in the mounting groove, the rotor assembly is connected with the machine shell, and the winding groove is annularly formed in the machine shell along the rotating axis of the machine shell. The motor provided by the utility model is simple in structure, small in size, light in weight and small in occupied space, and facilitates the realization of light weight of fitness equipment.

Description

Technical Field

[0001] The utility model relates to the field of motor technology, in particular to a motor, a traction component and fitness equipment thereof. Background Art

[0002] Traditional fitness equipment usually adjusts the pulling force by adding or subtracting iron weights, which not only takes up a lot of space but also lacks flexibility. Therefore, in recent years, manufacturers have begun to use motors to replace iron weights, and control the motors to generate different pulling forces to form different training modes. For existing fitness equipment, in order to obtain greater torque and pulling force, the motors are usually enlarged, so the size of the motors becomes larger and the weight becomes heavier, which makes the size of the fitness equipment larger and the space occupied also larger, which is not conducive to achieving lightweight fitness equipment. Utility Model Content

[0003] An object of the embodiments of the utility model is to provide a motor with a simple structure, a small size, a light weight, and a small occupied space.

[0004] Another purpose of the embodiment of the utility model is to provide a traction assembly and fitness equipment thereof, which reduces the overall volume and space occupied by the fitness equipment by adopting the above-mentioned motor, thereby achieving lightweight fitness equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In one aspect, a motor is provided, comprising:

[0007] Pedestal;

[0008] A housing, rotatably mounted on the base;

[0009] A stator assembly is mounted on the base;

[0010] as well as

[0011] A rotor assembly, rotatably mounted on the base and cooperating with the stator assembly;

[0012] The housing is formed with a mounting groove and a winding groove, the stator assembly and the rotor assembly are both located in the mounting groove, the rotor assembly is connected to the housing, and the winding groove is arranged around the housing along the rotation axis of the housing.

[0013] The casing is arranged outside the stator assembly and the rotor assembly. The cable is retracted and released by rotating the casing, so that the outer rotor can retract and release the cable. The pulling force can be guaranteed even if the motor is small as a whole. At the same time, the winding groove is formed in the casing, and there is no need to set up an additional rope drum, which further reduces the size of the motor.

[0014] Optionally, the housing has a first outer circumferential side surface and an annular surface, the first outer circumferential side surface and the annular surface are arranged in sequence along the rotation axis of the housing, the first outer circumferential side surface is provided with a first heat dissipation hole, the annular surface is a groove surface of the winding groove, the annular surface is provided with a second heat dissipation hole, and the first heat dissipation hole and the second heat dissipation hole are both connected to the mounting groove. By providing the first heat dissipation hole and the second heat dissipation hole, the heat dissipation performance of the motor is improved.

[0015] Optionally, the motor further includes a bearing; a positioning tube having a positioning hole is formed on the inner wall of the mounting groove; the base has a base shaft; the base is provided with a receiving groove, the receiving groove is arranged outside the base shaft along the axis of the base shaft; the positioning tube is sleeved on the base shaft through the positioning hole and inserted into the receiving groove; the bearing is sleeved outside the base shaft and located between the outer wall of the base shaft and the inner wall of the positioning hole. The housing is mounted on the base shaft of the base through the bearing to reduce friction.

[0016] Optionally, there are multiple bearings, at least one bearing is sleeved on one end of the base shaft, and at least one bearing is sleeved on the other end of the base shaft and located in the accommodating groove, so that the rotation of the housing is more stable.

[0017] Optionally, a magnetic encoding plate with a magnetic encoder is provided on the end surface of the base shaft, and a first magnetic steel matching the magnetic encoder is installed on the housing, so as to realize position detection of the housing.

[0018] Optionally, the motor further comprises a wire pressing plate; a wiring groove is provided on the base, the wire pressing plate is installed in the wiring groove and forms a wire clamping hole together with the inner wall of the wiring groove to facilitate the arrangement of wires.

[0019] Optionally, the motor also includes a first insulating plate and a second insulating plate arranged in sequence along the rotation axis of the casing; the second insulating plate is installed on the base and located in the mounting groove, the first insulating plate is installed on the base and located at the notch of the mounting groove, the stator assembly and the rotor assembly are both located between the first insulating plate and the second insulating plate, and a wiring hole connected to the wiring groove is opened on the first insulating plate to improve safety.

[0020] Optionally, the stator assembly has a limiting hole, the first insulating plate is provided with a limiting ring, the wiring hole is located in the area enclosed by the limiting ring, the limiting ring is inserted into the limiting hole and abuts against the inner wall of the limiting hole, the limiting ring is provided with a wiring notch, and the wiring hole is connected with the mounting groove through the wiring notch to facilitate the arrangement of wires.

[0021] Optionally, the rotor assembly is arranged outside the stator assembly;

[0022] The rotor assembly includes a bracket, a positioning sleeve sleeved outside the bracket, and a plurality of second magnets; the positioning sleeve is connected to the casing, and the plurality of second magnets are installed on the bracket and arranged at intervals along the circumferential direction of the rotation axis of the casing. The stator assembly and the base are both located in the area enclosed by the plurality of second magnets, which facilitates the installation of the rotor assembly.

[0023] On the other hand, a traction assembly is provided, including a cable and the above-mentioned motor; the cable has a winding end located in the winding groove and wound on the casing along the circumference of the rotation axis of the casing, and the winding end has a number of winding layers along a direction perpendicular to the rotation axis of the casing, and the number of winding layers is equal to one, avoiding sudden changes in tension or uneven tension.

[0024] Optionally, the wire winding groove has a first limiting inner wall and a second limiting inner wall arranged at intervals along the rotation axis of the casing, and there is a predetermined width between the first limiting inner wall and the second limiting inner wall. The cable has a predetermined diameter, and the predetermined width is less than or equal to five times the predetermined diameter and greater than or equal to three times the predetermined diameter. Under the premise of ensuring a smooth experience of rope tension, the motor volume can be further optimized.

[0025] On the other hand, a fitness equipment is provided, comprising a frame and the above-mentioned traction assembly; the base is installed on the frame, which can realize lightweight and thin fitness equipment.

[0026] The beneficial effects of the utility model are as follows: the motor structure of the utility model is simple, and the cable is wound by the casing located outside the rotor assembly and the stator assembly, so the motor can output greater torque and tension, and the overall size of the motor can be made smaller, thereby reducing the size of the motor. At the same time, the motor of the utility model realizes the winding and winding of the cable by directly forming a winding groove on the casing. Compared with the method of connecting a cable drum at the output end of the motor body to form an entire motor, the utility model does not need to additionally set up a cable drum, thereby further reducing the overall volume and weight of the motor, and further reducing the overall space occupied by the motor. The motor is used in traction components and fitness equipment, and can achieve lightweight and thin traction components and fitness equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described in detail below based on the drawings and embodiments.

[0028] Figure 1 It is the structural diagram of the motor;

[0029] Figure 2 is a cross-sectional view of the motor;

[0030] Figure 3This is the exploded view of the motor;

[0031] Figure 4 is a schematic diagram of the structure of the casing;

[0032] Figure 5 This is the front view of the traction component.

[0033] Description of the accompanying drawings:

[0034] 1. Motor; 2. Cable; 11. Base; 12. Casing; 13. Stator assembly; 14. Rotor assembly; 15. Bearing; 16. Magnetic braiding plate; 17. First magnetic steel; 18. Wire pressing plate; 19. Wire clamping hole; 20. First insulating plate; 21. Second insulating plate; 22. Circlip; 23. Cover;

[0035] 111, base shaft; 112, receiving groove; 113, wiring groove;

[0036] 120, mounting groove; 121, winding groove; 122, first outer circumferential side surface; 123, annular surface; 124, first heat dissipation hole; 125, second heat dissipation hole; 126, positioning tube; 127, positioning hole; 128, first limiting inner wall; 129, second limiting inner wall;

[0037] 131, limit hole;

[0038] 141. bracket; 142. positioning sleeve; 143. second magnetic steel;

[0039] 181, cable slot;

[0040] 201, wiring hole; 202, limiting ring; 203, wiring gap;

[0041] 211. The third heat dissipation hole. DETAILED DESCRIPTION

[0042] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "fixed", "connected", "communicated", "abutted", "clamped" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0046] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0047] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0048] Unless specifically stated or defined otherwise, the term “and / or” used in the present invention includes any and all combinations of one or more of the associated listed items.

[0049] For the convenience of description, unless otherwise specified, the up-down direction, vertical direction, and the extension direction of the rotation axis of the housing mentioned below are all the same as Figure 2 The up and down directions are consistent.

[0050] Fitness equipment is a general term for sports equipment used for fitness. A power station is one type of fitness equipment. A power station usually adjusts the pulling force by adding or subtracting iron weights. Exercisers achieve the purpose of exercising strength by pulling weights. A power station uses the method of adding or subtracting iron weights, and requires the setting of a loading area and a placement area for weights. This makes the power station not only occupy a large space, lack flexibility, and is not conducive to home use, but also not conducive to the transportation and placement of the power station, making it difficult to achieve lightweight and thin fitness equipment.

[0051] The current mainstream solution is to use a reduction servo motor to generate tension. The noise of the reduction servo motor is relatively loud. Some people also use a direct-drive servo motor solution. The direct-drive servo motor is large in size and heavy in weight. It not only takes up a lot of space and lacks flexibility, but is also not conducive to the transportation and placement of the power station, and it is difficult to achieve lightweight and thin fitness equipment. In the related technology, some power stations use a motor body to drive a rope drum to retract and release the rope to replace heavy objects. For the motor body of the existing power station, the rope is wound by the motor body driving the rope drum. The motor formed by connecting the motor body and the rope drum to adjust the size of the tension will also cause the overall size of the motor to become larger and heavier.

[0052] In order to solve the problem of excessive size of motors and fitness equipment in related technologies, an embodiment of the present application provides a motor. The motor in the embodiment of the present application adopts an external rotor drive method to retract and release the cable. The armature diameter of the external rotor drive method is large, which can generate a larger electromagnetic torque and output a larger pulling force. The size of the casing, base, rotor assembly and stator assembly can be reduced to meet the pulling force requirements, so that the overall size of the motor can be made smaller.

[0053] The rotor assembly and stator assembly of the motor are both installed in the mounting groove of the casing through the base. The casing is rotatably installed and driven to rotate by the rotor assembly. The cable is retracted and released by the rotation of the casing located outside, which can generate greater torque and tension. At the same time, by directly setting a winding groove on the casing to achieve the winding and reeling of the cable to generate tension, there is no need to set up an additional cable drum, thereby reducing the overall size and weight of the motor, and further reducing the overall space occupied by the motor.

[0054] like Figures 1 to 4As shown, the motor 1 provided by the present application includes a base 11, a housing 12 rotatably mounted on the base 11, a stator assembly 13 mounted on the base 11, and a rotor assembly 14 rotatably mounted on the base 11 and matched with the stator assembly 13. The rotor assembly 14 is fixedly or transmission-connected to the housing 12, and the housing 12 can be driven to rotate when the rotor assembly 14 rotates relative to the stator assembly 13. The base 11 and the stator assembly 13 are relatively fixed, and the magnetic fields of the rotor assembly 14 and the stator assembly 13 interact with each other, and the rotor assembly 14 rotates relative to the stator assembly 13, and the housing 12 is driven to rotate when the rotor assembly 14 rotates.

[0055] The housing 12 is formed with a mounting groove 120 and a winding groove 121. The housing 12 is in a disc shape. The axis of the housing 12 coincides with its own rotation axis. The mounting groove 120 is provided on one end surface of the housing 12, and the winding groove 121 is provided on the outer circumferential side surface close to the other end surface of the housing 12. The winding groove 121 is arranged around the housing 12 along the rotation axis of the housing 12. The bottom wall of the winding groove 121 forms a second outer circumferential side surface, and the bottom wall of the winding groove 121 forms a winding column. At least part of the base 11 is located in the mounting groove 120, and the stator assembly 13 and the rotor assembly 14 are both located in the mounting groove 120, so as to realize the positioning and protection of the base 11, the stator assembly 13 and the rotor assembly 14.

[0056] The motor 1 of this embodiment has a simple structure and is easy to install. The base 11, the stator assembly 13 and the rotor assembly 14 are all located in the installation groove 120 of the housing 12. The housing 12 is located outside. The winding and release of the cable 2 are achieved by the rotation of the housing 12. The housing 12 is external, so that the motor 1 becomes an outer rotor direct drive motor. Compared with other motors, the outer rotor motor has a larger armature diameter under the same volume, which can generate a larger electromagnetic torque and output a larger pulling force. By utilizing the characteristics of the high torque density of the outer rotor motor, the overall size of the motor 1 of this embodiment can be made smaller, reducing the size of the motor 1, thereby reducing the volume of the motor 1, solving the problem of the large volume of ordinary direct drive motors, and finally making the thickness of the motor 1 along the rotation axis direction of the housing 12 within 50 mm, which is conducive to the motor and the fitness equipment using the motor to achieve lightweight and thinness. At the same time, the outer rotor direct drive motor also solves the problem of high noise of traditional reduction motors. In addition, the motor 1 of this embodiment realizes the winding and winding of the cable 2 by opening a winding groove 121 in the housing 12. The motor 1 does not need to be additionally provided with a rope drum to reel in or release the rope 2 or the cord, and thus has a smaller volume and a lighter weight, further reducing the size of the motor 1 .

[0057] In one embodiment, the housing 12 has a first outer circumferential side surface 122 and an annular surface 123, and the axes of the first outer circumferential side surface 122 and the annular surface 123 both coincide with the rotation axis of the housing 12. The first outer circumferential side surface 122 and the annular surface 123 are arranged in sequence along the rotation axis of the housing 12, and the first outer circumferential side surface 122 and the annular surface 123 are both arranged around the base 11 along the rotation axis of the housing 12, and the annular surface is the groove surface of the winding groove. The stator assembly 13 and the rotor assembly 14 are both located in the area enclosed by the first outer circumferential side surface 122. Specifically, the first outer circumferential side surface 122 and the annular surface 123 are connected. The outer side surface of the first outer circumferential side surface 122 is provided with a first heat dissipation hole 124, and the first heat dissipation hole 124 is provided with a plurality of holes. The lower end of the first outer circumferential side surface 122 is a notch of the mounting groove 120. The winding groove 121 is provided on the annular surface 123, and the inner wall of the winding groove 121 is provided with a second heat dissipation hole 125, and a plurality of the second heat dissipation holes 125 are provided. A plurality of first heat dissipation holes 124 are arranged circumferentially at intervals along the axis of the first outer circumferential side surface 122, and a plurality of first heat dissipation holes 124 are arranged circumferentially at intervals along the axis of the first outer circumferential side surface 122, and each second heat dissipation hole 125 and each second heat dissipation hole 125 are connected to the mounting groove 120. The stator assembly 13 and the rotor assembly 14 are both located in the area enclosed by the first outer circumferential side surface 122. The area enclosed by the first outer circumferential side surface 122 is prone to heat accumulation. Therefore, a first heat dissipation hole 124 is provided on the outer side surface of the first outer circumferential side surface 122 to dissipate heat. In addition, the lower end of the first outer circumferential side surface 122 is a notch of the mounting groove 120, which is used to install the stator assembly 13 and the rotor assembly 14 and the base 11. When the motor is installed, the notch of the mounting groove 120 needs to be closed, and the lower end of the base needs to extend from the notch of the mounting groove 120 to be connected to the frame of equipment such as fitness equipment. It is impossible to set a heat dissipation hole. Therefore, the present application provides a second heat dissipation hole 125 on the inner wall of the winding groove 121 to further improve the heat dissipation performance. The first outer circumferential side surface 122 is perpendicular to the annular surface 123 to achieve heat dissipation in two directions. The present application optimizes the heat dissipation of the casing 12. The first outer circumferential side surface 122 and the annular surface 123 of the casing 12 are respectively provided with a first heat dissipation hole 124 and a second heat dissipation hole 125. The first heat dissipation hole 124 and the second heat dissipation hole 125 are used to dissipate heat to prevent the temperature in the installation groove 120 from being too high and causing damage to the motor 1.

[0058] Optionally, the motor further includes a bearing 15. A positioning tube 126 having a positioning hole 127 is formed on the inner wall of the mounting groove 120. Specifically, a positioning tube 126 is formed on the bottom wall of the mounting groove 120. The bottom wall of the mounting groove 120 is perpendicular to the rotation axis of the housing 12, and the positioning tube 126 extends vertically downward. The base 11 has a base shaft 111, and the base shaft 111 extends vertically upward. A receiving groove 112 is provided on the base 11, and the receiving groove 112 is arranged outside the base shaft 111 along the axis of the base shaft 111, and a bearing 15 is sleeved on the base shaft 111. The bearing 15 is sleeved outside the base shaft 111 and is located between the outer wall of the base shaft 111 and the inner wall of the positioning hole 127. The lower end of the positioning tube 126 is sleeved on the base shaft 111 through the positioning hole 127 and inserted into the receiving groove 112. The receiving groove 112 has an avoidance effect and makes the installation depth of the positioning tube 126 greater, that is, the length of the positioning tube 126 is longer, the length of the base shaft 111 inserted into the positioning hole 127 is longer, the rotation of the housing 12 is more stable, and the thickness of the motor 1 in the vertical direction is also smaller. The bearing 15 is located in the positioning hole 127, so that the housing 12 is rotatably installed on the base shaft 111 through the bearing 15, reducing the friction between the housing 12 and the base 11.

[0059] Furthermore, there are at least two bearings 15 and they are arranged in sequence along the axis of the base shaft 111. In this embodiment, there are two bearings 15, one bearing 15 is close to the upper end of the base shaft 111, and the other bearing 15 is close to the lower end of the base shaft 111 and is located in the receiving groove 112, which further improves the stability of the rotation of the housing 12. Two hole shoulders are provided on the inner wall of the positioning hole 127, and a shaft shoulder is provided on the base shaft 111. The bearing 15 close to the upper end of the base shaft 111 is installed through a retaining ring 22, and the bearing 15 close to the upper end of the base shaft 111 is clamped between the retaining ring 22 and one of the hole shoulders, and the bearing 15 close to the lower end of the base shaft 111 is clamped between the shaft shoulder and the other hole shoulder, which facilitates the housing 12, the base shaft 111, and the two bearings 15 to cooperate with each other and be quickly assembled.

[0060] Furthermore, the notch of the installation groove 120 is located at the lower end surface of the housing 12, the lower end of the positioning hole 127 is communicated with the installation groove 120, and the upper end of the positioning hole 127 passes through the upper end surface of the housing 12 and is communicated with the outside of the housing 12. During installation, a bearing 15 is first sleeved on the lower end of the base shaft 111, and then installed in the housing 12, so that the bearing 15 is stuck between the shaft shoulder and a hole shoulder, and then another bearing 15 is installed in the positioning hole 127 from the upper end of the positioning hole 127 and positioned by the retaining spring 22, so that the housing 12 and the base 11 are assembled, and the installation is more convenient.

[0061] Optionally, a cover 23 is provided on the housing 12. After the bearing 15 installed from the upper end of the positioning hole 127 is installed, the cover 23 is installed on the housing 12 through rivets and other connecting parts. The cover 23 covers the hole opening at the upper end of the positioning hole 127 to achieve sealing and have a dust-proof and waterproof effect.

[0062] In one embodiment, a magnetic plate 16 with a magnetic encoder is provided on the end surface of the base shaft 111, and a first magnetic steel 17 matching the magnetic encoder is installed on the housing 12. The magnetic plate 16 is a circuit board, and a magnetic encoder is integrated on the magnetic plate 16. The magnetic encoder is a sensor for testing the position of the rotor assembly 14. The magnetic plate 16 is installed on the upper end of the base shaft 111, and the first magnetic steel 17 is arranged on the housing 12 through a mounting seat. The first magnetic steel 17 rotates with the housing 12, and the magnetic encoder is used to sense the position of the first magnetic steel 17, so that the position of the rotor assembly 14 can be tested, and then the angle, speed and other data of the rotor assembly 14 when rotating are obtained, so as to achieve high-precision control of the motor.

[0063] In one embodiment, the motor 1 further includes a wire pressing plate 18. The wire pressing plate 18 is in a square shape, the base shaft 111 is located at the upper end of the base 11, and the lower end of the base 11 is provided with a wiring groove 113, which is convenient for wiring and prevents the wire pressing plate 18 from protruding. The wire pressing plate 18 is installed in the wiring groove 113 by fasteners such as screws and forms a wire clamping hole 19 with the inner wall of the wiring groove 113, and the wire clamping hole 19 is convenient for positioning the wires, arranging the wires, and arranging the wires.

[0064] Optionally, the wire clamping groove 181 is provided on the wire pressing plate 18, and the inner wall of the wire clamping groove 181 and the bottom wall of the wiring groove 113 jointly form a wire clamping hole 19. The wire clamping groove 181 is a circular arc groove, preferably, the wire clamping groove 181 is a semicircular arc groove, and there are multiple wire clamping grooves 181 on each wire pressing plate 18 and they are arranged at intervals. After the wire pressing plate 18 is installed on the base 11, multiple wire clamping holes 19 are formed to facilitate the arrangement of different wires.

[0065] Optionally, both sides of the wiring groove 113 are provided with a card slot. Both ends of the wire pressing plate 18 are clamped in the card slot to achieve the positioning of the wire pressing plate 18.

[0066] In one embodiment, the motor 1 further includes a first insulating plate 20 and a second insulating plate 21 arranged in sequence along the rotation axis of the housing 12. The first insulating plate 20 and the second insulating plate 21 can be insulated to improve the safety of the motor. The second insulating plate 21 is mounted on the base 11 and is located in the mounting groove 120, and the second insulating plate 21 is located above the first insulating plate 20. The first insulating plate 20 is mounted on the base 11 and is located at the notch of the mounting groove 120. The stator assembly 13 and the rotor assembly 14 are both located between the first insulating plate 20 and the second insulating plate 21, and the stator assembly 13 is located in the area enclosed by the rotor assembly 14. A wiring hole 201 connected to the wiring groove 113 is opened on the first insulating plate 20, and the lower end of the base 11 extends from the wiring hole 201. The wiring groove 113 and the wire pressing plate 18 are both located in the wiring hole 201 for convenient wiring.

[0067] Optionally, in order to facilitate heat dissipation, a third heat dissipation hole 211 is provided on the second insulating plate 21, and the third heat dissipation hole 211 is connected to the second heat dissipation hole 125, so that the heat in the mounting groove 120 is dissipated through the third heat dissipation hole 211 and the second heat dissipation hole 125 in sequence. In addition, it can be understood that the heat can also first pass through the gap between the second insulating plate 21 and the inner wall of the mounting groove 120, and then dissipate from the second heat dissipation hole 125.

[0068] In one embodiment, the stator assembly 13 has a limiting hole 131, the first insulating plate 20 is provided with a limiting ring 202, the wiring hole 201 is located in the area enclosed by the limiting ring 202, the limiting ring 202 is inserted into the limiting hole 131 and abuts against the inner wall of the limiting hole 131, so as to realize the installation and positioning of the first insulating plate 20. The limiting ring 202 is provided with a wiring notch 203, and the wiring hole 201 is connected with the mounting groove 120 through the wiring notch 203. The stator assembly 13 has an NTC temperature sensor, which is a thermistor and probe, and its principle is that the resistance value decreases rapidly with the increase of temperature. It is usually composed of 2 or 3 metal oxides, mixed in fluid-like clay, and sintered into a dense sintered ceramic in a high-temperature furnace. The NTC temperature sensor is small in size, and the size can reach 0.010 inches or a very small diameter. The wiring notch 203 can facilitate the layout of the sensor wires.

[0069] In one embodiment, the rotor assembly is arranged outside the stator assembly. Compared with the stator assembly being arranged outside the rotor assembly, the torque of the rotor assembly is greater when the rotor assembly is arranged outside the stator assembly. The rotor assembly 14 includes a bracket 141, a positioning sleeve 142 sleeved outside the bracket 141, and a plurality of second magnetic steels 143. The bracket 141 is provided with a plurality of magnetic steel grooves, and the plurality of magnetic steel grooves are arranged at intervals along the circumference of the rotation axis of the housing 12. Each magnetic steel groove is installed with a second magnetic steel 143, and the second magnetic steel 143 is in the shape of a square plate. The positioning sleeve 142 is connected to the housing 12, and the plurality of second magnetic steels 143 are all installed on the bracket 141 and arranged at intervals along the circumference of the rotation axis of the housing 12. The stator assembly 13 and the base 11 are both located in the area enclosed by the plurality of second magnetic steels 143. The positioning sleeve 142 is a steel sleeve in the shape of an annular ring, and the second magnetic steel 143 is installed inside the positioning sleeve 142 through the bracket 141.

[0070] Optionally, considering the optimization of the cogging torque and torque fluctuation of the motor 1, the second magnetic steel 143 adopts a tile-shaped magnetic steel, the shape of the tile-shaped magnetic steel is similar to a tile, and the magnetic pole surface of the tile-shaped magnetic steel is arc-shaped, which can better adapt to the shape of the rotating shaft, thereby optimizing the magnetic circuit design. In addition, the magnetic pole surface of the tile-shaped magnetic steel also has a high magnetic permeability, which can reduce magnetic leakage and improve the efficiency of the magnetic circuit. The second magnetic steel 143 of the motor 1 of the present application adopts a tile-shaped magnetic steel to optimize the cogging torque and torque fluctuation, and improve the performance and stability of the motor 1.

[0071] like Figure 5 As shown, this embodiment also provides a traction assembly, including a cable 2 and the above-mentioned motor 1. The cable 2 has a winding end located in the winding groove 121 and wound on the housing 12 along the circumference of the rotation axis of the housing 12. The winding end has a number of winding layers along the direction perpendicular to the rotation axis of the housing 12, the number of winding layers is C, and the number of winding layers C is equal to one. When the winding end is wound, the winding end is wound multiple times, and the multiple turns are arranged in sequence along the extension direction of the rotation axis of the housing 12. In the direction perpendicular to the rotation axis of the housing 12, the number of winding layers of the cable 2 is one, that is, the cable 2 is not stacked in the direction perpendicular to the rotation axis of the housing 12. Multi-layer winding will cause the tension radius to change, resulting in a sudden change in tension or uneven tension. Therefore, the traction assembly in this embodiment has one winding layer on the motor 1, which can avoid sudden changes in tension or uneven tension.

[0072] Furthermore, the winding groove 121 has a first limiting inner wall 128 and a second limiting inner wall 129 arranged at intervals along the rotation axis of the housing 12, and a predetermined width is provided between the first limiting inner wall 128 and the second limiting inner wall 129, and the predetermined width is D. The cable 2 has a predetermined diameter, and the predetermined diameter is E. The predetermined width is less than or equal to five times the predetermined diameter and greater than or equal to three times the predetermined diameter, 5E≥D≥3E.

[0073] In this embodiment, considering the length of the cable 2, the diameter F of the second outer circumferential side formed by the bottom wall of the winding groove 121 is 100 mm to 150 mm, the predetermined width D of the first limiting inner wall 128 and the second limiting inner wall 129 is 16 mm to 20 mm, and the number of turns of the casing 12 is three to five. Specifically, the diameter F of the second outer circumferential side formed by the bottom wall of the winding groove 121 is 120 mm, the number of turns of the casing 12 is four, and the predetermined diameter of the cable 2 in each turn is E. The predetermined width D of the first limiting inner wall 128 and the second limiting inner wall 129 is 16 mm. On the premise of ensuring a smooth experience of the pull rope tension, the volume of the motor 1 can be further optimized, solving the problem of large volume of the ordinary direct drive motor 1.

[0074] The motor and traction assembly of this embodiment can be applied to various fitness equipment, such as a resistance-type strength station.

[0075] This embodiment also provides a fitness equipment, including a frame and the above-mentioned traction assembly. The base 11 is installed on the frame to achieve lightweight and thin fitness equipment.

[0076] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A motor, characterized in that: include: Base (11); A housing (12) rotatably mounted on the base (11); A stator assembly (13) mounted on the base (11); as well as A rotor assembly (14) rotatably mounted on the base (11) and cooperating with the stator assembly (13); The housing (12) is formed with a mounting groove (120) and a winding groove (121); the stator assembly (13) and the rotor assembly (14) are both located in the mounting groove (120); the rotor assembly (14) is connected to the housing (12); and the winding groove (121) is arranged around the housing (12) along the rotation axis of the housing (12).

2. The motor according to claim 1, characterized in that The housing (12) comprises a first outer circumferential side surface (122) and an annular surface (123); the first outer circumferential side surface (122) and the annular surface (123) are arranged in sequence along the rotation axis of the housing (12); the first outer circumferential side surface (122) is provided with a first heat dissipation hole (124); the annular surface (123) is a groove surface of the winding groove (121); the annular surface (123) is provided with a second heat dissipation hole (125); the first heat dissipation hole (124) and the second heat dissipation hole (125) are both connected to the mounting groove (120).

3. The motor according to claim 2, characterized in that The invention also comprises a bearing (15); a positioning tube (126) having a positioning hole (127) is formed on the inner wall of the installation groove (120); the base (11) has a base shaft (111); the base (11) is provided with a receiving groove (112); the receiving groove (112) is arranged outside the base shaft (111) along the axis of the base shaft (111); the positioning tube (126) is sleeved on the base shaft (111) through the positioning hole (127) and inserted into the receiving groove (112); the bearing (15) is sleeved outside the base shaft (111) and is located between the outer wall of the base shaft (111) and the inner wall of the positioning hole (127).

4. The motor according to claim 3, characterized in that There are a plurality of bearings (15), at least one of which is sleeved on one end of the base shaft (111), and at least one of which is sleeved on the other end of the base shaft (111) and located in the accommodating groove (112).

5. The motor according to claim 3, characterized in that A magnetic encoding plate (16) having a magnetic encoder is provided on the end surface of the base shaft (111), and a first magnetic steel (17) matching the magnetic encoder is installed on the housing (12).

6. The motor according to any one of claims 1 to 5, characterized in that: It also includes a wire pressing plate (18); a wiring groove (113) is provided on the base (11); the wire pressing plate (18) is installed in the wiring groove (113) and forms a wire clamping hole (19) together with the inner wall of the wiring groove (113).

7. The motor according to claim 6, characterized in that The invention also includes a first insulating plate (20) and a second insulating plate (21) arranged in sequence along the rotation axis of the housing (12); the second insulating plate (21) is mounted on the base (11) and is located in the mounting groove (120); the first insulating plate (20) is mounted on the base (11) and is located at the notch of the mounting groove (120); the stator assembly (13) and the rotor assembly (14) are both located between the first insulating plate (20) and the second insulating plate (21); and the first insulating plate (20) is provided with a wiring hole (201) connected to the wiring groove (113).

8. The motor according to claim 7, characterized in that The stator assembly (13) has a limiting hole (131); the first insulating plate (20) is provided with a limiting ring (202); the wiring hole (201) is located in an area enclosed by the limiting ring (202); the limiting ring (202) is inserted into the limiting hole (131) and abuts against the inner wall of the limiting hole (131); the limiting ring (202) is provided with a wiring notch (203); and the wiring hole (201) is connected to the mounting groove (120) through the wiring notch (203).

9. The motor according to any one of claims 1 to 5, characterized in that: The rotor assembly (14) is arranged outside the stator assembly (13); The rotor assembly (14) comprises a bracket (141), a positioning sleeve (142) sleeved outside the bracket (141), and a plurality of second magnetic steels (143); the positioning sleeve (142) is connected to the housing (12); the plurality of second magnetic steels (143) are all mounted on the bracket (141) and arranged at intervals along the circumference of the rotation axis of the housing (12); the stator assembly (13) and the base (11) are both located in an area enclosed by the plurality of second magnetic steels (143).

10. A traction assembly, characterized in that: It comprises a cable (2) and a motor (1) as claimed in any one of claims 1 to 9; the cable (2) has a winding end located in the winding groove (121) and wound on the casing (12) along the circumference of the rotation axis of the casing (12), and the winding end has a number of winding layers along a direction perpendicular to the rotation axis of the casing (12), and the number of winding layers is equal to one.

11. The traction assembly according to claim 10, characterized in that: The wire winding groove (121) has a first limiting inner wall (128) and a second limiting inner wall (129) arranged at intervals along the rotation axis of the housing (12), and there is a predetermined width between the first limiting inner wall (128) and the second limiting inner wall (129), and the cable (2) has a predetermined diameter, and the predetermined width is less than or equal to five times the predetermined diameter and greater than or equal to three times the predetermined diameter.

12. A fitness equipment, characterized in that: It comprises a frame and the traction assembly according to claim 11; the base (11) is installed on the frame.

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