Caseless motor
By designing heat sinks, ventilation holes, and support components in the caseless motor, the problem of insufficient heat dissipation in caseless motors is solved, achieving efficient heat dissipation and rapid installation, and ensuring the stability and safety of the motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIZHOU DAIDAIHONG ELECTROMECHANICAL CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-08-04
AI Technical Summary
Existing shell-less motors are prone to overheating and damage when heat dissipation requirements are high, failing to effectively solve the heat dissipation problem.
A casing-less motor structure was designed, including a stator, rotor, fixed housing, heat dissipation mechanism, and fixing mechanism. By setting heat sinks on the outer wall of the stator and opening heat dissipation holes in the fixed housing, combined with support components and connecting components, rapid fixing and effective heat dissipation are achieved.
This achieves efficient heat dissipation for the casing-less motor, avoiding overheating damage, improving installation and disassembly efficiency, and ensuring the stability and safety of the motor.
Smart Images

Figure CN224596272U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, and in particular to a casingless motor. Background Technology
[0002] An electric motor is an electromagnetic device that converts electrical energy into mechanical energy. It is widely used in industry, transportation, and home appliances. Its core principle is based on the law of electromagnetic induction, which converts electrical energy into mechanical energy through the relative motion of a magnetic field and a conductor, driving the operation of various equipment. Examples include spindle motors in machine tools, drive motors in electric vehicles, and single-phase asynchronous motors in household fans. Their structure typically includes a stator, rotor, and commutator. Based on the power supply type, they can be divided into DC motors and AC motors. With the growth of demand for new energy and intelligent technology, motors are developing towards high efficiency and energy saving, miniaturization and lightweighting, integration, and permanent magnetization. For example, rare earth permanent magnet motors are becoming increasingly popular in new energy vehicles and renewable energy fields. Advances in motor technology continue to drive the automation and green transformation of various industries. In order to dissipate heat from the motor, a shell-less motor is needed.
[0003] A search revealed Chinese Patent Publication No. CN214900444U, which discloses a casing-less motor, comprising: a motor body, the motor body including a motor stator, a motor rotor, and an end cover, the motor rotor being disposed inside the motor stator, the end cover being mounted on the motor stator, and an installation mechanism disposed on the motor body. This casing-less motor, through its installation mechanism, can quickly assemble the motor body. Using fixing bolts, fixing blocks, and several sets of connecting pieces, the fixing bolts can quickly fix the end cover and the motor stator, thereby quickly assembling the motor body and improving the installation efficiency of the casing-less motor. It is convenient for users. The entire device has a simple structure and is easy to operate, increasing the practicality of the casing-less motor. However, it does not improve the heat dissipation structure of the casing-less motor, making the motor more susceptible to overheating and damage when the heat dissipation requirements are high, thus failing to meet usage needs. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a casing-less motor, which aims to improve the problem that the existing technology has not improved the heat dissipation structure of casing-less motors, resulting in the motor being more prone to damage due to overheating when the heat dissipation requirements are high.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a caseless motor, including a stator, a rotor rotatably connected inside the stator, a fixed housing one fixedly connected to the left side of the stator, a fixed housing two fixedly connected to the right side of the stator, a fan blade fixedly connected to the right side of the rotor, a heat dissipation mechanism provided on the outer wall of the stator for dissipating heat generated during operation of the caseless motor, a fixing mechanism provided at the bottom end of the stator for quickly fixing the caseless motor, the heat dissipation mechanism including a heat dissipation component, the interior of the heat dissipation component being fixedly connected to the outer wall of the stator, connecting components provided around the heat dissipation component, and a support component provided at the bottom end of the stator.
[0006] The above technical solution involves a rotating component inside the sliding groove, with a fixing component at the bottom of the rotating component.
[0007] As a further description of the above technical solution: The fixing mechanism includes a sliding groove, a rotating component is provided inside the sliding groove, and a fixing component is provided at the bottom end of the rotating component.
[0008] Through the above technical solution: the adjacent side of the heat sink is fixedly connected to the outer wall of the stator to ensure that the heat sink can effectively conduct the heat generated by the stator. The interior of the first fixed shell is provided with multiple heat dissipation holes, which are designed to enhance air circulation and improve heat dissipation. The interior of the second fixed shell is provided with multiple heat dissipation holes, which are also used to optimize heat dissipation performance and ensure stable temperature during equipment operation.
[0009] As a further description of the above technical solution: The heat dissipation assembly includes a heat sink, with one adjacent side of the heat sink fixedly connected to the outer wall of the stator. The interior of each of the first fixed shells is provided with a plurality of heat dissipation holes, and the interior of each of the second fixed shells is provided with a plurality of heat dissipation holes.
[0010] Through the above technical solution: the connecting component includes a support block, one side of which is firmly fixed to the outer wall of the second fixed shell to ensure the stability of the overall structure. The support block has an internal sliding connecting bolt, one end of which is slidably connected to the inside of the support block, while the other end is tightly engaged with the first nut through a threaded connection, thereby realizing reliable connection and adjustment functions between the components.
[0011] As a further description of the above technical solution: The connecting assembly includes a support block, one side of which is fixedly connected to the outer wall of the second fixed shell. A connecting bolt is slidably connected inside the support block, and a nut is threadedly connected to the other end of the connecting bolt.
[0012] The above technical solution ensures the stability and reliability of the entire structure by fixing the top of the support leg to the bottom of the stator, and further enhances the overall support capacity by fixing the bottom of the support leg to the support plate.
[0013] As a further description of the above technical solution: The support assembly includes a support leg, the top end of which is fixedly connected to the bottom end of the stator, and a support plate is fixedly connected to the bottom end of the support leg.
[0014] The above technical solution involves a rotating component including a support column. The outer wall surface of the support column is connected to the inner wall surface of the sliding groove through a sliding mechanism, ensuring smooth movement of the component within the groove. A rotating ring is rotatably connected to the outer wall of the support column, enabling the entire component to rotate flexibly within the sliding groove.
[0015] As a further description of the above technical solution: The rotating assembly includes a support column, the outer wall of which is slidably connected to the inner wall of the sliding groove, and a rotating ring is rotatably connected to the outer wall of the support column.
[0016] The above technical solution includes a fixing screw, the bottom of which is tightly connected to the bottom of the rotating ring through a robust fixing connection, ensuring the stability of the rotating ring during rotation. To further enhance the fixing effect, the bottom of the outer wall of the fixing screw is also connected to a nut through a threaded connection. This threaded connection is not only strong and reliable, but also facilitates subsequent disassembly and maintenance. Two rotating handles are fixedly connected to the left and right sides of the nut. These two rotating handles not only facilitate the user's manual operation of the rotating component, but also further improve the operational flexibility and convenience of the entire device.
[0017] As a further description of the above technical solution: The fixing component includes a fixing screw, the bottom end of which is fixedly connected to the bottom end of the rotating ring. The bottom end of the outer wall of the fixing screw is threaded with a nut, and two rotating handles are fixedly connected to both the left and right sides.
[0018] Through the above technical solution, the top end of the stator is fixedly connected to the lifting ring, which makes it particularly suitable for convenient and efficient lifting and moving of casing-less motors, greatly improving the convenience of motor installation and maintenance.
[0019] As a further description of the above technical solution: A lifting ring is fixedly connected to the top of the stator, which is suitable for convenient lifting and moving of the casing-less motor.
[0020] This utility model has the following beneficial effects: 1. In this utility model, the heat generated by the shellless motor is dissipated through multiple heat sinks on the outer wall, while multiple heat dissipation holes opened inside the fixed shell one and fixed shell two further dissipate the heat, thereby achieving better heat dissipation for the shellless motor and preventing it from overheating and becoming unusable during operation, thus affecting work efficiency.
[0021] 2. In this utility model, the support column is slid into the sliding groove to the predetermined position, the rotating ring is rotated to the required angle on the outer wall of the support column, and then the rotating handle is rotated to drive the second nut to rotate, so as to quickly fix the caseless motor in the predetermined position; when the caseless motor needs to be removed, the rotating handle is reversed to make the second nut unscrewed from the outer wall of the fixing screw, so as to achieve quick removal and improve installation efficiency. Attached Figure Description
[0022] Figure 1 This is a perspective view of the front stator of the casing-less motor proposed in this utility model; Figure 2 This is a structural diagram of the support plate for the shell-less motor proposed in this utility model; Figure 3 This is a rotor structure diagram of the shell-less motor proposed in this utility model; Figure 4 This is a schematic diagram of the fan blade structure of the shell-less motor proposed in this utility model; Figure 5 This is a schematic diagram of the fixed shell structure of the shellless motor proposed in this utility model.
[0023] Legend: 1. Stator; 2. Heat dissipation mechanism; 201. Heat dissipation component; 2011. Heat sink; 2012. Heat dissipation hole one; 2013. Heat dissipation hole two; 202. Connecting component; 2021. Support block; 2022. Connecting bolt; 2023. Nut one; 203. Support component; 2031. Support leg; 2032. Support plate; 3. Fixing mechanism; 301. Sliding groove; 302. Rotating component; 3021. Support column; 3022. Rotating ring; 303. Fixing component; 3031. Fixing screw; 3032. Nut two; 3033. Rotating handle; 4. Rotor; 5. Fixing shell one; 6. Fixing shell two; 7. Fan blade; 8. Lifting ring. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see the appendix Figure 1 - Appendix Figure 3 This utility model provides an embodiment of a casing-less motor, including a stator 1, a rotor 4 rotatably connected inside the stator 1, a fixed housing 5 fixedly connected to the left side of the stator 1, a fixed housing 6 fixedly connected to the right side of the stator 1, a fan blade 7 fixedly connected to the right side of the rotor 4, a heat dissipation mechanism 2 provided on the outer wall of the stator 1, the main function of which is to effectively dissipate the heat generated by the casing-less motor during operation and prevent the motor from overheating, a fixing mechanism 3 provided at the bottom of the stator 1, the function of which is to quickly and firmly fix the casing-less motor to ensure the stability and safety of the motor during operation, the heat dissipation mechanism 2 includes a heat dissipation component 201, the interior of which is fixedly connected to the outer wall of the stator 1, a connecting component 202 provided around the heat dissipation component 201, and a support component 203 provided at the bottom of the stator 1 to provide additional support and stability to ensure the reliable operation of the entire motor system; Specifically, the stator 1 is internally connected to the rotor 4, ensuring smooth rotation of the rotor 4 within the stator 1. A fixed housing 5 is fixedly connected to the left side of the stator 1 to provide structural support and protection. A fixed housing 6 is fixedly connected to the right side of the stator 1, further enhancing overall stability and protective performance. A fan blade 7 is fixedly connected to the right side of the rotor 4 to drive effective airflow when the rotor 4 rotates. The outer wall of the stator 1 is equipped with a dedicated heat dissipation mechanism 2. The main function of this mechanism 2 is to effectively dissipate the heat generated by the casing-less motor during operation, preventing electrical leakage. In case of overheating, a fixing mechanism 3 is provided at the bottom of the stator 1. The function of the fixing mechanism 3 is to quickly and firmly fix the casingless motor, ensuring the stability and safety of the motor during operation. The heat dissipation mechanism 2 includes a heat dissipation component 201. The internal structure of the heat dissipation component 201 is tightly connected to the outer wall of the stator 1 through a fixed connection to ensure the maximum heat dissipation effect. Connecting components 202 are provided around the heat dissipation component 201 for connection and fixation with other components. A support component 203 is provided at the bottom of the stator 1 to provide additional support and stability, ensuring the reliable operation of the entire motor system.
[0026] Please see the appendix Figure 2 - Appendix Figure 3The fixing mechanism 3 includes a sliding groove 301, inside which a rotating component 302 is provided. At the bottom of the rotating component 302, a fixing component 303 is provided. The rotating component 302 includes a support column 3021. The outer wall of the support column 3021 is slidably connected to the inner wall of the sliding groove 301, ensuring smooth movement of the component in the groove. A rotating ring 3022 is rotatably connected to the outer wall of the support column 3021. The fixing component 303 includes a fixing screw 3031. The bottom end of the fixing screw 3031 is fixedly connected to the bottom end of the rotating ring 3022, allowing the entire component to rotate flexibly within the sliding groove 301. A nut 3032 is threadedly connected to the bottom end of the outer wall of the fixing screw 3031. Two rotating handles 3033 are fixedly connected to both sides of the fixing screw 3032. These two rotating handles 3033 not only facilitate the user's manual operation of the rotating component 302, but also further improve the operational flexibility and convenience of the entire device. Specifically, a rotating assembly 302 is provided inside the sliding groove 301. A fixing assembly 303 is provided at the bottom of the rotating assembly 302. The rotating assembly 302 includes a support column 3021. The outer wall surface of the support column 3021 is connected to the inner wall surface of the sliding groove 301 by sliding, ensuring smooth movement of the assembly within the groove. A rotating ring 3022 is rotatably connected to the outer wall of the support column 3021, allowing the entire assembly to rotate flexibly within the sliding groove 301. The fixing assembly 303 includes a fixing screw 3031. The bottom part of the fixing screw 3031 is connected to the rotating ring 3022. The bottom part is tightly connected by a sturdy fixing method to ensure the stability of the rotating ring 3022 during rotation. In order to further enhance the fixing effect, the bottom part of the outer wall of the fixing screw 3031 is also connected to a nut 3032 by a threaded connection. This threaded connection method is not only firm and reliable, but also facilitates subsequent disassembly and maintenance. Two rotating handles 3033 are fixedly connected to the left and right sides of the nut 3032. These two rotating handles 3033 not only facilitate the user's manual operation of the rotating component 302, but also further improve the operational flexibility and convenience of the entire device.
[0027] Please see the appendix Figure 3 - Appendix Figure 4 The heat dissipation assembly 201 includes a heat sink 2011, with one side of the heat sink 2011 fixedly connected to the outer wall of the stator 1. The interior of the first fixed shell 5 is provided with a plurality of heat dissipation holes 2012, and the interior of the second fixed shell 6 is provided with a plurality of heat dissipation holes 2013. The connecting assembly 202 includes a support block 2021, with one side of the support block 2021 fixedly connected to the outer wall of the second fixed shell 6. The interior of the support block 2021 is slidably connected with a connecting bolt 2022, and the other end of the connecting bolt 2022 is threadedly connected with a nut 2023. Specifically, the adjacent side of the heat sink 2011 is fixedly connected to the outer wall of the stator 1 to ensure that the heat sink 2011 can effectively conduct the heat generated by the stator. The interior of the fixed housing 1 5 is provided with multiple heat dissipation holes 2012. These heat dissipation holes 2012 are designed to enhance air circulation and improve heat dissipation. The interior of the fixed housing 2 6 is provided with multiple heat dissipation holes 2013. These heat dissipation holes 2013 are also used to optimize heat dissipation performance and ensure stable temperature during equipment operation. The connecting component 202 includes a support block 2021. The adjacent side of the support block 2021 is firmly fixed to the outer wall of the fixed housing 2 6 to ensure the stability of the overall structure. The support block 2021 is internally connected with a sliding bolt 2022. One end of the connecting bolt 2022 is slidably connected to the interior of the support block 2021, while the other end is tightly engaged with a nut 2023 through a threaded connection, thereby realizing reliable connection and adjustment functions between the components.
[0028] Please see the appendix Figure 3 - Appendix Figure 5 The support assembly 203 includes a support leg 2031, the top end of which is fixedly connected to the bottom end of the stator 1, ensuring the stability and reliability of the entire structure. The bottom end of the support leg 2031 is fixedly connected to a support plate 2032, which further enhances the overall support capacity. The top end of the stator 1 is fixedly connected to a lifting ring 8, which makes it particularly suitable for convenient and efficient lifting and moving of the caseless motor, greatly improving the convenience of motor installation and maintenance. Specifically, the top of the support leg 2031 is fixedly connected to the bottom of the stator 1, ensuring the stability and reliability of the entire structure. The bottom of the support leg 2031 is fixedly connected to the support plate 2032, further enhancing the overall support capacity. The top of the stator 1 is fixedly connected to the lifting ring 8, which makes it particularly suitable for convenient and efficient lifting and moving of the casing-less motor, greatly improving the convenience of motor installation and maintenance.
[0029] Working principle: During use, the heat generated by the casingless motor is dissipated through multiple heat sinks 2011 fixed on the outer wall of the casing 1. At the same time, multiple heat dissipation holes 2012 and 2013 inside the casing 5 further dissipate the heat generated by the casingless motor, thereby achieving better heat dissipation of the casingless motor and preventing it from overheating during operation, which would render it unusable and affect work efficiency. In use, slide the support column 3021 inside the sliding groove 301 to the predetermined position, then rotate the rotating ring 3022 in the outer wall of the support column 3021 to the required angle. After that, rotate the rotating handle 3033 to drive the second nut 3032 to rotate, thereby quickly fixing the caseless motor in the predetermined position. When it is necessary to remove the caseless motor, reverse the rotating handle 3033 to drive the second nut 3032 to unscrew it on the outer wall of the fixing screw 3031, thereby realizing the quick removal of the caseless motor and improving the installation efficiency.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A casingless motor, comprising a stator (1), characterized in that: The stator (1) is rotatably connected to the inside of the rotor (4), the left side of the stator (1) is fixedly connected to the first fixed shell (5), the right side of the stator (1) is fixedly connected to the second fixed shell (6), the right side of the rotor (4) is fixedly connected to the fan blade (7), the outer wall of the stator (1) is provided with a heat dissipation mechanism (2), the heat dissipation mechanism (2) is used to dissipate the heat generated when the shellless motor is working, and the bottom end of the stator (1) is provided with a fixing mechanism (3), the fixing mechanism (3) is used to quickly fix the shellless motor; The heat dissipation mechanism (2) includes a heat dissipation component (201), the interior of which is fixedly connected to the outer wall of the stator (1), a connecting component (202) is provided around the heat dissipation component (201), and a support component (203) is provided at the bottom of the stator (1).
2. The casing-less motor according to claim 1, characterized in that: The fixing mechanism (3) includes a sliding groove (301), a rotating component (302) is provided inside the sliding groove (301), and a fixing component (303) is provided at the bottom end of the rotating component (302).
3. The casing-less motor according to claim 1, characterized in that: The heat dissipation assembly (201) includes a heat sink (2011), one side of which is fixedly connected to the outer wall of the stator (1). The interior of the first fixed shell (5) is provided with a plurality of heat dissipation holes (2012), and the interior of the second fixed shell (6) is provided with a plurality of heat dissipation holes (2013).
4. The casingless motor according to claim 1, characterized in that: The connecting assembly (202) includes a support block (2021), one side of which is fixedly connected to the outer wall of the second fixed shell (6), and a connecting bolt (2022) is slidably connected inside the support block (2021), and a nut (2023) is threadedly connected to the other end of the connecting bolt (2022).
5. The casingless motor according to claim 1, characterized in that: The support assembly (203) includes a support leg (2031), the top end of which is fixedly connected to the bottom end of the stator (1), and a support plate (2032) is fixedly connected to the bottom end of the support leg (2031).
6. The casing-less motor according to claim 2, characterized in that: The rotating assembly (302) includes a support column (3021), the outer wall of the support column (3021) is slidably connected to the inner wall of the sliding groove (301), and a rotating ring (3022) is rotatably connected to the outer wall of the support column (3021).
7. The casing-less motor according to claim 2, characterized in that: The fixing component (303) includes a fixing screw (3031), the bottom end of which is fixedly connected to the bottom end of the rotating ring (3022), and the bottom end of the outer wall of the fixing screw (3031) is threaded with a nut (3032), and two rotating handles (3033) are fixedly connected to the left and right sides of the nut (3032).
8. The casing-less motor according to claim 1, characterized in that: The top of the stator (1) is fixedly connected to a lifting ring (8), which is suitable for convenient lifting and moving of the casing-less motor.