Driving module and fitness equipment

Abstract

The utility model discloses a driving module and fitness equipment, and belongs to the technical field of power equipment, the driving module comprises a support seat, a rotor shell and a stator assembly; the supporting seat is provided with a shaft hole, the rotor shell is provided with a rotating shaft and a transmission part, the transmission part and the rotating shaft are coaxially arranged, the rotor shell is rotatably installed on the supporting seat through matching of the rotating shaft and the shaft hole, and the transmission part is arranged outside the supporting seat in a sleeving mode. A mounting space is formed between the inner wall of the transmission part and the outer wall of the supporting seat, and heat dissipation openings are formed in the two ends of the mounting space in the axis direction of the rotating shaft; the stator assembly is installed in the installation space and abuts against the outer wall of the supporting seat. The driving module is good in heat dissipation effect, the operation stability is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, in particular to a driving module and fitness equipment. Background Art

[0002] Some existing fitness equipment typically uses the driving force generated by a drive module, such as a motor, as resistance or assistance for exercise, enabling users to achieve their desired workout. The motors commonly used in fitness equipment on the market are primarily external rotor motors. The stator and rotor assemblies of external rotor motors are both mounted within a rotor housing, and the rotation of the rotor housing enables movement of the fitness equipment. In external rotor motors, the shaft passes through the stator assembly, and the rotor housing and rotor assembly are both located around the outside of the stator assembly. This results in poor heat dissipation from the internal stator assembly. Excessive stator assembly temperatures not only significantly reduce the operational stability of the drive module but also shorten its service life. Utility Model Content

[0003] One purpose of the embodiments of the present utility model is to provide a drive module, which has good heat dissipation effect, improved operation stability and extended service life.

[0004] Another purpose of the embodiment of the present utility model is to provide a fitness device, which improves the heat dissipation effect of the fitness device by using the above-mentioned driving module, thereby improving the operating stability of the fitness device.

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

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

[0007] A support seat having an axial hole;

[0008] The rotor housing has a rotating shaft and a transmission part; the transmission part is coaxially arranged with the rotating shaft;

[0009] as well as

[0010] stator assembly;

[0011] The rotor housing is rotatably mounted on the support base through the rotation shaft and the shaft hole, and the transmission part is sleeved on the outside of the support base;

[0012] An installation space is formed between the inner wall of the transmission part and the outer wall of the support seat, and heat dissipation openings are formed at both ends of the installation space along the axis direction of the rotating shaft;

[0013] The stator assembly is installed in the installation space and abuts against the outer wall of the support seat.

[0014] Optionally, the support seat includes a support body; the shaft hole is coaxially arranged inside the support body, and the installation space is formed between the outer wall of the support body and the inner wall of the transmission part to facilitate the installation of the rotor housing.

[0015] Optionally, the rotor housing includes a connecting wall connecting the rotating shaft and the transmission part, and the heat dissipation port includes a first heat dissipation port arranged on the connecting wall and a second heat dissipation port arranged at an end of the rotor housing opposite to the connecting wall, thereby improving heat dissipation efficiency.

[0016] Optionally, there are multiple first heat dissipation openings, which are evenly arranged around the axis of the rotating shaft on the connecting wall, and the second heat dissipation opening is an annular opening that surrounds the circumference of the supporting body, thereby increasing the area of ​​the heat dissipation opening.

[0017] Optionally, the support seat further has a heat dissipation plate connected to the support body, and the outer contour size of the heat dissipation plate is larger than the diameter of the support body, thereby increasing the heat dissipation area and improving the heat dissipation efficiency.

[0018] Optionally, the drive module also includes a rotary encoder; the rotary encoder includes an encoder code disk mounted on the support seat and an encoder magnet mounted on the rotating shaft; the encoder magnet is fixedly connected to the rotating shaft through a thermal insulation seat to prevent the heat of the stator assembly from being transferred to the encoder magnet through the rotating shaft and affecting the data detection of the encoder magnet.

[0019] Optionally, the encoder code disc and the encoder magnet are both located on the rotation axis of the rotating shaft and arranged at intervals along the rotation axis of the rotating shaft. A mounting hole is provided on the rotating shaft, and the thermal insulation seat is arranged in the mounting hole to achieve coaxial detection.

[0020] Optionally, the mounting hole has a first hole section and a second hole section connected to the first hole section, the first hole section and the second hole section are arranged in sequence along the direction away from the encoder code disk, and a positioning hole shoulder is formed at the connection between the first hole section and the second hole section, and the thermal insulation seat has a clamping portion and a mounting portion arranged in sequence along the rotation axis of the rotating shaft; the encoder magnet is installed on the mounting portion, the clamping portion is clamped in the second hole section, the mounting portion abuts against the positioning hole shoulder, the mounting portion is located in the first hole section, and there is a thermal insulation gap between the mounting portion and the inner wall of the first hole section, further preventing heat from being transferred to the encoder magnet through the rotating shaft.

[0021] Optionally, the shaft hole passes through the support body and the heat sink along the rotation axis of the shaft, an end cover is installed on the heat sink, the encoder code disc is installed on the end cover, the end cover covers the hole at one end of the shaft hole, and the shaft is rotatably installed in the shaft hole from the hole at the other end of the shaft hole, which facilitates the installation of the encoder code disc.

[0022] Optionally, the rotary encoder further includes a wire; the end cover is provided with a wiring groove; one end of the wire is located outside the support seat, and the other end of the wire passes through the wiring groove and is electrically connected to the encoder code disk to facilitate wiring.

[0023] Optionally, the rotor housing further has a winding portion, the winding portion is provided with a winding groove, and the winding groove is arranged on the rotor housing along the circumference of the rotating shaft to improve the overall strength of the drive module.

[0024] Optionally, the driving module further includes a rotor assembly installed on the rotor housing; the rotor assembly is located in the installation space and is annularly sleeved on the stator assembly, so that the rotor assembly drives the rotor housing to rotate.

[0025] Optionally, the rotor assembly includes a yoke mounted on the inner wall of the transmission part and a rotor magnet mounted on the yoke; the stator assembly includes a stator core; there are multiple rotor magnets and they are evenly arranged along the circumference of the stator core to achieve coordinated installation of the stator assembly and the rotor assembly.

[0026] Optionally, the driving module further includes a bearing mounted in the shaft hole; the rotating shaft is rotatably mounted in the shaft hole via the bearing to reduce friction.

[0027] On the other hand, a fitness device is provided, comprising the above-mentioned driving module.

[0028] The beneficial effects of the utility model are:

[0029] When the rotor housing of the drive module of the present invention is rotatably mounted on the axial hole of the support base via a rotating shaft, a mounting space is formed between the rotor housing and the outer wall of the support base. The stator assembly is mounted in the mounting space. Heat dissipation openings are formed at both ends of the mounting space along the axial direction of the rotating shaft. Heat generated by the stator assembly can also be dissipated into the air through the heat dissipation openings, improving the heat dissipation efficiency of the stator assembly and thus enhancing the heat dissipation effect. At the same time, the stator assembly abuts the outer wall of the support base, allowing the support base to remove heat generated by the stator assembly and transfer it to the air, further improving the heat dissipation efficiency of the stator assembly. This further enhances the heat dissipation effect, thereby improving the operational stability of the drive module and extending the service life of the drive module.

[0030] The fitness equipment of the present invention adopts the above-mentioned driving module, and by using the above-mentioned driving module, the operating stability of the fitness equipment can be improved and the service life of the fitness equipment can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0032] Figure 1 It is a structural diagram of the drive module;

[0033] Figure 2 This is a structural diagram of the drive module from another perspective;

[0034] Figure 3 is a cross-sectional view of the drive module;

[0035] Figure 4 for Figure 3 A magnified view of point A;

[0036] Figure 5 for Figure 4 Structural diagram of the middle mounting hole;

[0037] Figure 6 This is a schematic diagram of the assembly of the end cap, wires, and encoder disc;

[0038] Figure 7 Schematic diagram of the assembly of the end cap and wire.

[0039] Description of the accompanying drawings:

[0040] 11. Support base; 12. Rotor housing; 13. Stator assembly; 14. Rotor assembly; 15. Second heat dissipation vent; 16. Encoder magnet; 17. Encoder disc; 18. Wire; 19. Thermal insulation base; 20. Thermal insulation gap; 21. End cap; 22. Bearing; 23. Threaded fastener;

[0041] 111. Support body; 112. Heat dissipation plate; 113. Axis hole;

[0042] 121. Transmission unit; 122. Wire winding unit; 123. Installation space; 124. Rotating shaft; 125. Mounting hole; 126. First heat dissipation outlet; 127. Positioning hole shoulder; 129. Wire winding groove;

[0043] 131, stator core;

[0044] 141. Magnetic yoke; 142. Rotor magnet;

[0045] 171. Encoder circuit board; 172. Sensor chip;

[0046] 191. Engaging portion; 192. Mounting portion;

[0047] 211, wiring groove; 212, threaded hole; 213, positioning column;

[0048] 1251, first hole section; 1252, second hole section. DETAILED DESCRIPTION

[0049] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0050] In the description of this utility model, unless otherwise expressly specified or limited, the terms "connected," "fixed," "connected," "communicated," "abutted," "clamped," etc. should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0051] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0052] In the description herein, it should be understood that terms such as "upper," "lower," "left," and "right" are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0053] Throughout this specification, references to terms such as "one embodiment" and "example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example.

[0054] In addition, it should be understood that although this specification is described in terms of 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0055] 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.

[0056] For the convenience of description, unless otherwise specified, the up and down directions mentioned below are the same as Figure 3 The up and down directions are consistent with the Figure 3 The right and left directions are consistent.

[0057] In the related art, the drive module serves as a power source for various tools and is mainly used to drive the operation of the equipment. For example, in some fitness equipment, an external rotor motor is used as the drive module, and the rotation of the rotor housing is used to retract and extend the cable to provide resistance in order to achieve the purpose of fitness. When in use, the fitness person directly or indirectly pulls the cable to obtain the resistance provided by the motor. At present, in the drive module of the fitness equipment, the stator assembly is installed on the central axis, the rotor assembly is installed on the rotor housing and arranged along the circumference of the stator assembly, and the stator assembly and the rotor assembly are both located inside the rotor housing. The stator assembly and the rotor assembly are sealed by a cover. When the fitness equipment is started, the rotor assembly is used to drive the rotor housing to rotate to retract and extend the cable. Since the stator assembly and the rotor assembly of the existing drive module are both located inside the rotor housing and are sealed by the cover, the heat dissipation effect is poor, which not only greatly reduces the operating stability of the drive module, but also affects the service life of the drive module.

[0058] In order to solve the problems in the above-mentioned related art, the present application provides a drive module, which takes away the heat generated by the stator assembly and conducts it into the air through a support base, thereby improving the heat dissipation effect of the drive module. At the same time, the rotor housing is mounted on the support base, and a heat dissipation port is formed between the rotor housing and the support base, so that the heat generated by the stator assembly can also be dissipated from the heat dissipation port into the air outside the rotor housing, further improving the heat dissipation efficiency of the stator assembly, thereby further improving the heat dissipation effect of the drive module. The drive module improves the heat dissipation effect and efficiency of the drive module through the support base and the heat dissipation port, thereby improving the operational stability of the fitness equipment and increasing the service life of the fitness equipment.

[0059] like Figures 1 to 3 As shown, the drive module provided by the present application includes a support base 11, a rotor housing 12, and a stator assembly 13. The stator assembly 13 is used to rotate with the rotor assembly 14 to realize the rotation of the rotor assembly 14. When the rotor assembly 14 rotates, it can drive the rotor housing 12 to rotate.

[0060] The support base 11 includes a support body 111 and an axial hole 113. The support body 111 of the support base 11 not only supports the rotor housing 12, the stator assembly 13, and the rotor assembly 14, but also conducts heat generated by the stator assembly 13 and other components. Through the heat conduction effect of the support base 11, the heat can be conducted to the air outside the rotor housing 12.

[0061] The rotor housing 12 has a transmission part 121, a winding part 122, and a rotating shaft 124. The winding part 122 is used to retract and release the cable, and the transmission part 121 is coaxially arranged with the rotating shaft 124, and the transmission part 121 is arranged around the rotating shaft 124. The rotor housing 12 is rotatably mounted on the support base 11 through the rotating shaft 124 and the shaft hole 113, and the transmission part 121 is sleeved on the outside of the support base 11. The transmission part 121 is used to connect with the rotor assembly 14. Driven by the rotor assembly 14, the entire rotor housing 12 is rotated. An installation space 123 is formed between the inner wall of the transmission part 121 and the outer wall of the support base 11. Heat dissipation ports are formed at both ends of the installation space 123 along the axial direction of the rotating shaft 124. The stator assembly 13 is installed in the installation space 123 and abuts against the outer wall of the support base 11. In this way, the drive module of this embodiment can utilize the heat conduction effect of the support base 11 to conduct heat to the air outside the rotor housing 12, and the heat generated by the stator assembly can also be dissipated into the air from the heat dissipation port, thereby improving the heat dissipation effect. This not only improves the operating stability of the drive module, but also extends the service life of the drive module.

[0062] Furthermore, the support base 11 includes a support body 111. The support body 111 serves as a support shaft, and an axial hole 113 is coaxially disposed within the support body 111. An installation space 123 is formed between the outer wall of the support body 111 and the inner wall of the transmission portion 121 to facilitate installation of the rotor housing. Specifically, the transmission portion 121 is provided with an accommodating space. After the transmission portion 121 is inserted into the support base 11 through the accommodating space, the installation space 123 is formed between the inner wall of the accommodating space and the outer wall of the support body 111 of the support base 11. A rotating shaft 124 is disposed on the connecting wall of the accommodating space. The rotor assembly 14 is mounted on the side wall of the accommodating space. The rotor housing 12 is sleeved on the stator assembly 13 through a receiving space, and the rotating shaft 124 is rotatably mounted in the shaft hole 113. The rotor housing 12 is rotatably mounted on the support base 11 through the cooperation of the rotating shaft 124 and the shaft hole 113. The rotor assembly 14 and the stator assembly 13 are both installed in the space 123. The rotor assembly 14 is annularly arranged around the stator assembly 13. A portion of the support body 111 of the support base 11 and the remaining portion of the support base 11 are located outside the rotor housing 12. The stator assembly 13 is sleeved on the support body 111 and abuts against the outer circumferential side surface of the support body 111. The rotor assembly 14 is mounted on the inner wall of the transmission portion 121. The rotor housing 12 is rotatably mounted behind the support base 11 through the cooperation of the rotating shaft 124 and the shaft hole 113. The rotor assembly 14 is located in the installation space 123, and the rotor housing 12 is arranged along the circumference of the stator assembly 13. When the drive module is energized, the stator assembly 13 and rotor assembly 14 cooperate to cause the rotor assembly 14 to rotate relative to the stator assembly 13, thereby causing the rotor assembly 14 to drive the rotor housing 12 to rotate. When the drive module is used on fitness equipment, the rotor assembly 14 drives the rotor housing 12 to rotate, and the winding portion 122 on the rotor housing 12 is used to retract and release the cable. During operation, heat generated by components such as the stator assembly 13 can be transferred to the support body 111 of the support base 11. Since a portion of the support body 111 of the support base 11 and the remainder of the support base 11 are located outside the rotor housing 12, these two portions can be used to conduct heat to the external air for dissipation. Simultaneously, heat generated by components such as the stator assembly 13 can also be directly conducted to the external air through the heat dissipation vents for dissipation. In this way, the drive module dissipates heat simultaneously through the support base 11 and the heat dissipation vents, improving the heat dissipation effect and efficiency of the drive module, thereby enhancing the operational stability of the drive module and increasing its service life.

[0063] Optionally, in order to improve the heat conduction efficiency of the support base 11 , the support base 11 is made of materials such as aluminum, aluminum alloy or copper alloy.

[0064] Optionally, the driving module further includes a rotor assembly 14 installed on the rotor housing 12. The rotor assembly 14 is located in the installation space 123 and is sleeved on the stator assembly 13, so that the rotor assembly drives the rotor housing to rotate.

[0065] In one embodiment, the drive module further includes a rotary encoder. The rotary encoder includes an encoder magnet 16, an encoder code disc 17 adapted to the encoder magnet 16, and a wire 18 electrically connected to the encoder code disc 17. The wire 18 can transmit signals and conduct electricity. The encoder code disc 17 is installed in the shaft hole 113, and the encoder magnet 16 is installed on the rotating shaft 124. The encoder code disc 17 and the encoder magnet 16 are both located on the rotation axis of the rotating shaft 124 and are arranged at intervals along the rotation axis of the rotating shaft 124. The existing encoder code disc 17 is installed on the stator assembly 13, and the encoder magnet 16 is installed on the rotor housing 12. The encoder code disc 17 and the encoder magnet 16 are arranged non-coaxially. In this embodiment, the encoder code disc 17 and the encoder magnet 16 are coaxially arranged, the encoder magnet 16 has better concentricity with the rotating shaft 124, and the torque output is more stable. When the encoder magnet 16 rotates, the inductive element of the encoder code disk 17 responds to the change in the direction of the magnetic field in the magnetic field, generating an electrical signal. The electrical signal is transmitted to the user end through the wire 18, so that the user can obtain the displacement, position, speed and other data of the rotor housing 12 of the drive module.

[0066] Optionally, the encoder code disc 17 includes an encoder circuit board 171 and a sensing chip 172 mounted on the encoder circuit board 171 . The sensing chip 172 is a sensing element. The encoder circuit board 171 is connected to a wire 18 .

[0067] like Figures 3 to 5 As shown, in one embodiment, a mounting hole 125 is provided on the rotating shaft 124, within which a thermal insulation seat 19 is mounted. The encoder magnet 16 is mounted on the thermal insulation seat 19. The thermal insulation seat 19 is fixed to the mounting hole 125, and the encoder magnet 16 is embedded in the thermal insulation seat 19. The mounting hole 125 is a circular hole and is provided on the end surface of one end of the rotating shaft 124. Specifically, in this embodiment, the mounting hole 125 is provided on the left end of the rotating shaft 124, and the axis of the mounting hole 125 coincides with the axis of the rotating shaft 124. The thermal insulation seat 19 is made of a thermally insulating material to prevent heat from the stator assembly 13 from being transferred to the encoder magnet 16 through the rotating shaft 124 and the thermal insulation seat 19, thereby affecting the data detection of the encoder magnet 16.

[0068] In one embodiment, mounting hole 125 includes a first hole section 1251 and a second hole section 1252 communicating with first hole section 1251. First hole section 1251 and second hole section 1252 are sequentially arranged in a direction away from encoder code disk 17. In this embodiment, first hole section 1251 and second hole section 1252 are sequentially arranged from left to right. Encoder code disk 17 is located to the left of the left end of rotating shaft 124 and spaced apart from the left end of rotating shaft 124. A positioning hole shoulder 127 is formed at the connection between first hole section 1251 and second hole section 1252. Thermal insulation seat 19 includes a snap-fit ​​portion 191 and a mounting portion 192 sequentially arranged along the rotation axis of rotating shaft 124. The engaging portion 191 and the mounting portion 192 are arranged sequentially from right to left. The mounting portion 192 is a magnetic steel mounting portion, and the encoder magnet 16 is mounted on the mounting portion 192. The engaging portion 191 is engaged with the second hole section 1252. The mounting portion 192 abuts against the positioning hole shoulder 127 to achieve the installation and positioning of the thermal insulation seat 19. The mounting portion 192 is located within the first hole section 1251, and a thermal insulation gap 20 is defined between the mounting portion 192 and the inner wall of the first hole section 1251. The mounting portion 192 does not contact the inner wall of the first hole section 1251. The thermal insulation gap 20 reduces the heat transfer from the rotating shaft 124 to the thermal insulation seat 19.

[0069] In one embodiment, the support base 11 further includes a heat sink 112 connected to the support body 111. The outer dimensions of the heat sink 112 are larger than the diameter of the support body 111. The heat sink 112 is located outside the rotor housing 12, thereby increasing the heat dissipation area of ​​the support base 11 in contact with the external air and improving heat dissipation efficiency. Specifically, the support body 111 and the heat sink 112 are integrally formed, and the length of the support body 111 is greater than the depth of the installation space 123. When the rotor housing 12 and the support body 111 are assembled, the heat sink 112 is located outside the left side of the rotor housing 12. The outer dimensions of the heat sink 112 are larger than the diameter of the support body 111. The provision of the heat sink 112 can increase the heat dissipation area. In this way, the heat generated by the stator assembly 13 is transferred to the heat sink 112 through the support body 111. The heat sink 112 accelerates the heat dissipation efficiency of the support body 111, thereby allowing the heat generated by the stator assembly 13 to be transferred to the external air with higher conduction efficiency.

[0070] Furthermore, the heat sink 112 is provided with a connection hole for fixing the support base 11. When the drive module is used in a fitness device, it is installed on the body of the fitness device through the heat sink 112.

[0071] Optionally, the shaft hole 113 passes through the support body 111 and the heat sink 112 along the rotation axis of the rotating shaft 124. An end cap 21 is installed on the heat sink 112. The encoder code disc 17 is installed on the end cap 21. The end cap 21 covers the hole at one end of the shaft hole 113. The rotating shaft 124 is rotatably installed in the shaft hole 113 from the hole at the other end of the shaft hole 113. When installing the encoder code disc 17, the encoder code disc 17 is first installed on the end cap 21, and then installed on the support base 11 through the end cap 21. The encoder magnet 16 is installed on the rotating shaft 124. After the rotating shaft 124 is rotatably installed in the shaft hole 113 from the hole at the other end of the shaft hole 113, the encoder magnet 16 and the encoder code disc 17 are exactly aligned, making the installation operation of the encoder magnet 16 and the encoder code disc 17 more convenient.

[0072] At present, most external rotor motors have only one central axis. The central axis passes through the central stator assembly 13, and the two ends of the central axis extend out of the rotor housing 12. A central hole is provided in the central axis for the routing of the wire 18. The encoder disc 17 is mounted on the stator assembly, and the encoder disc 17 and the three-phase wires of the motor pass through the central hole, which makes operation very inconvenient. Existing external rotor motors usually have a heat dissipation channel on the rotor housing or cover, through which the stator assembly 13 can be ventilated and cooled. However, the heat dissipation channel will bring dust and other pollution to the encoder disc 17 mounted on the stator assembly 13, affecting the signal of the encoder disc 17 and causing unstable motor control. In the present application, the encoder disc 17 and the encoder magnet 16 are both coaxially arranged in the shaft hole 113. When a heat dissipation channel is provided on the rotor housing 12 or the cover, dust and other pollution will not be brought to the encoder disc 17, thereby preventing the signal of the encoder disc 17 from being affected by dust.

[0073] like Figure 3 、 Figures 6 and 7 As shown, in one embodiment, the end cap 21 is provided with a wiring slot 211. One end of the wire 18 is located outside the support base 11, and the other end of the wire 18 passes through the wiring slot 211 and is electrically connected to the encoder code disk 17. The end cap 21 is provided with a plurality of threaded holes 212, and the encoder circuit board 171 of the encoder code disk 17 is mounted on the end cap 21 via threaded fasteners 23. Specifically, the end cap 21 is provided with a positioning column 213, which is used to engage with the positioning pin hole on the encoder circuit board 171 to achieve the positioning of the encoder circuit board 171. Finally, the encoder circuit board 171 of the encoder code disk 17 is locked by the threaded fasteners 23.

[0074] In one embodiment, a winding groove 129 is provided on the winding portion 122 , and the winding groove 129 is arranged on the rotor housing 12 along the circumference of the rotating shaft 124 . The cable is limited by the side wall of the winding groove 129 , which facilitates the retraction and extension of the cable.

[0075] Furthermore, the rotor housing 12 includes a connecting wall connecting the rotating shaft 124 and the transmission part 121, and the connecting wall serves as the bottom wall of the storage space. The heat dissipation port includes a first heat dissipation port 126 provided on the connecting wall and a second heat dissipation port 15 provided at the end of the rotor housing 12 opposite the connecting wall. The heat dissipation efficiency is improved by dissipating heat through the first heat dissipation port 126 and the second heat dissipation port 15. The rotor assembly 14 is mounted on the side wall of the storage space of the rotor housing 12. The rotating shaft 124 is integrally formed with the rotor housing 12, and the winding groove 129 is integrally formed on the outside of the rotor housing 12. Compared with the prior art in which an additional winding drum is provided on the rotor housing 12, the integrally formed structure can reduce the number of connectors, improve the overall strength of the drive module, and make the rotor housing 12 more stable when retracting and releasing the cable.

[0076] Optionally, there are multiple first heat dissipation openings 126, and the multiple first heat dissipation openings 126 are evenly arranged around the axis of the rotating shaft 124 on the connecting wall, thereby increasing the area of ​​the first heat dissipation openings 126. The second heat dissipation openings 15 are annular openings that surround the entire circumference of the supporting body 111, thereby increasing the area of ​​the second heat dissipation openings 15 and improving the heat dissipation efficiency.

[0077] Optionally, the sidewall of the winding slot 129 is provided with a plurality of first heat dissipation openings 126, which communicate with the installation space 123. The slot of the accommodation space is located at the left end of the rotor housing 12. The slot of the accommodation space does not need to be covered, thereby forming a second heat dissipation opening 15 to accelerate heat dissipation from the stator assembly 13. The second heat dissipation opening 15 is located on the side of the drive module close to the heat sink 112, while the winding slot 129 is located on the side of the rotor housing 12 away from the heat sink 112. Specifically, the slot of the accommodating space is located on the left side of the rotor housing 12, the encoder magnet 16 and the encoder code disk 17 are both close to the left end of the shaft hole 113, the winding groove 129 and the second heat dissipation port 15 are close to the right end of the rotor housing 12, and the installation space 123 is connected to the outside of the rotor housing 12 through the first heat dissipation port 126. There are multiple first heat dissipation ports 126 and they are arranged circumferentially along the rotation axis of the rotor housing 12. In this way, the left side of the rotor housing 12 can use the support seat 11 and the second heat dissipation port 15 to dissipate heat for the stator assembly 13, and the right side of the rotor housing 12 can use the first heat dissipation port 126 for heat dissipation, thereby further improving the heat dissipation effect of the stator assembly 13.

[0078] Furthermore, the present embodiment also discloses the structures of the rotor assembly 14 and the stator assembly. The rotor assembly 14 includes a yoke 141 and rotor magnets 142. The stator assembly 13 includes a stator core 131. There are multiple rotor magnets 142 and they are evenly distributed along the circumference of the stator core 131.

[0079] Specifically, refer to Figure 3As shown, the stator assembly 13 includes a stator core 131 and a stator winding disposed on the stator core 131. The stator core 131 of the stator assembly 13 is mounted on the support body 111 of the support base 11. The yoke 141 of the rotor assembly 14 is nested in the sidewall of the installation space 123. The installation space 123 is a circular groove, and the yoke 141 is evenly distributed along the circumference of the rotor magnets 142. The yoke 141 and the rotor magnets 142 are arranged around the outside of the stator core 131.

[0080] In one embodiment, the drive module further includes a bearing 22 mounted within the shaft hole 113. The shaft 124 is rotatably mounted within the shaft hole 113 via the bearing 22. Multiple bearings 22 are provided and spaced apart along the axis of the shaft 124. The provision of the bearings 22 can reduce friction between the shaft 124 and the support base 11.

[0081] The present application also provides a fitness device, particularly an electric fitness device, comprising the aforementioned drive module. Specifically, the fitness device further comprises a cable. One end of the cable is wound around a cable reel 129 of the rotor housing 12, and the other end of the cable can be pulled directly or indirectly by a fitness user.

[0082] In addition, the drive module of the present application can also be used in equipment such as tractors and elevators.

[0083] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A driving module, characterized in that: include: The support seat (11) has an axial hole (113); The rotor housing (12) has a rotating shaft (124) and a transmission part (121); the transmission part (121) and the rotating shaft (124) are coaxially arranged; as well as stator assembly (13); The rotor housing (12) is rotatably mounted on the support base (11) by cooperating with the shaft (124) and the shaft hole (113), and the transmission part (121) is sleeved on the outside of the support base (11); An installation space (123) is formed between the inner wall of the transmission part (121) and the outer wall of the support seat (11), and heat dissipation openings are formed at both ends of the installation space (123) along the axial direction of the rotating shaft (124); The stator assembly (13) is installed in the installation space (123) and abuts against the outer wall of the support seat (11).

2. The driving module according to claim 1, characterized in that: The support seat (11) includes a support body (111); the shaft hole (113) is coaxially arranged inside the support body (111) with the support body (111); and the installation space (123) is formed between the outer wall of the support body (111) and the inner wall of the transmission part (121).

3. The driving module according to claim 2, characterized in that: The rotor housing (12) comprises a connecting wall connecting the rotating shaft (124) and the transmission part (121), and the heat dissipation opening comprises a first heat dissipation opening (126) arranged on the connecting wall and a second heat dissipation opening (15) arranged at an end of the rotor housing (12) opposite to the connecting wall.

4. The driving module according to claim 3, characterized in that: There are multiple first heat dissipation openings (126), and the multiple first heat dissipation openings (126) are evenly arranged on the connecting wall around the axis of the rotating shaft (124). The second heat dissipation opening (15) is an annular opening that surrounds the entire circumference of the supporting body (111).

5. The driving module according to claim 2, characterized in that: The support seat (11) further comprises a heat dissipation plate (112) connected to the support body (111), and the outer contour size of the heat dissipation plate (112) is larger than the diameter of the support body (111).

6. The driving module according to claim 5, characterized in that: The invention also includes a rotary encoder; the rotary encoder includes an encoder code disk (17) mounted on the support seat (11) and an encoder magnet (16) mounted on the rotating shaft (124); the encoder magnet (16) is fixedly connected to the rotating shaft (124) through a heat insulation seat (19).

7. The driving module according to claim 6, characterized in that: The encoder code disk (17) and the encoder magnet (16) are both located on the rotation axis of the rotating shaft (124) and are arranged at intervals along the rotation axis of the rotating shaft (124). The rotating shaft (124) is provided with a mounting hole (125), and the heat insulation seat (19) is arranged in the mounting hole (125).

8. The driving module according to claim 7, characterized in that: The mounting hole (125) has a first hole section (1251) and a second hole section (1252) connected to the first hole section (1251), the first hole section (1251) and the second hole section (1252) are arranged in sequence along a direction away from the encoder code disk (17), a positioning hole shoulder (127) is formed at the connection point between the first hole section (1251) and the second hole section (1252), and the heat insulation seat (19) has a rotation axis along the rotation axis (124). The encoder magnet (16) is installed on the mounting portion (192), the engaging portion (191) is clamped on the second hole section (1252), the mounting portion (192) is in contact with the positioning hole shoulder (127), the mounting portion (192) is located in the first hole section (1251), and a heat insulation gap (20) is provided between the mounting portion (192) and the inner wall of the first hole section (1251).

9. The driving module according to claim 6, characterized in that: The shaft hole (113) passes through the supporting body (111) and the heat dissipation plate (112) along the rotation axis of the rotating shaft (124); an end cover (21) is installed on the heat dissipation plate (112); the encoder code disk (17) is installed on the end cover (21); the end cover (21) covers the opening at one end of the shaft hole (113); the rotating shaft (124) is rotatably installed in the shaft hole (113) from the opening at the other end of the shaft hole (113).

10. The driving module according to claim 9, characterized in that: The rotary encoder further includes a wire (18); the end cover (21) is provided with a wiring groove (211); one end of the wire (18) is located outside the support seat (11), and the other end of the wire (18) passes through the wiring groove (211) and is electrically connected to the encoder code disk (17).

11. The driving module according to any one of claims 1 to 10, characterized in that: The rotor housing (12) further comprises a winding portion (122), a winding groove (129) is provided on the winding portion (122), and the winding groove (129) is arranged on the rotor housing (12) along the circumference of the rotating shaft (124).

12. The driving module according to any one of claims 1 to 10, characterized in that: It also includes a rotor assembly (14) installed on the rotor housing (12); the rotor assembly (14) is located in the installation space (123) and is sleeved on the stator assembly (13).

13. The driving module according to claim 12, characterized in that: The rotor assembly (14) comprises a yoke (141) mounted on the inner wall of the transmission part and a rotor magnet (142) mounted on the yoke (141); the stator assembly (13) comprises a stator core (131); and the rotor magnet (142) is provided in plurality and is evenly arranged along the circumference of the stator core (131).

14. The driving module according to any one of claims 1 to 10, characterized in that: It also includes a bearing (22) installed in the shaft hole (113); the rotating shaft (124) is rotatably installed in the shaft hole (113) through the bearing (22).

15. A fitness equipment, characterized in that: Comprising the drive module according to any one of claims 1 to 14.

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