An asynchronous motor terminal box structure

Abstract

The utility model relates to motor manufacturing technical field discloses an asynchronous motor terminal box structure, including motor core, the front side fixed connection of motor core has the lead box, the inner wall of lead box is provided with heat abstractor, the bottom fixed connection of motor core has the bottom plate, the top of bottom plate is provided with connecting mechanism, the inner wall of lead box is provided with heat preservation mechanism, the inner wall front side fixed connection of lead box has the terminal, the front side of lead box is provided with wiring mechanism, the heat abstractor includes the graphene board, the front side fixed connection of graphene board is in the back of terminal. In the utility model, the heat of terminal is absorbed by graphene board and is given to the heat spreading plate, the heat spreading plate makes the heat even distribution, and the heat is radiated through the fin and the heat pipe, and the fan and the wind deflector can speed up the heat exchange rate, the dust screen keeps the cleanliness, improves the heat dissipation efficiency and prevents the device from overheating, prolongs the service life of the device.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to an asynchronous motor junction box structure. Background Technology

[0002] An asynchronous motor is a motor that works based on the principle of electromagnetic induction. It consists of a stator and a rotor. It is popular because the stator windings generate a rotating magnetic field when alternating current is applied, and the rotor rotates due to electromagnetic induction. The stable operation of an asynchronous motor is inseparable from its junction box.

[0003] The asynchronous motor junction box has a compact structure. The main body of the junction box is a box with a mounting base, which is fixed to the side or top of the motor base. The core component inside the box is the terminal block. The box cover has a wire inlet hole for the introduction of external power lines. The hole is equipped with a rubber sealing ring, which not only fixes the wires but also enhances the sealing. The overall structure ensures the standardization of wiring operations and provides reliable protection for the internal circuit.

[0004] Although the asynchronous motor junction box structure can adapt to different power supply voltages, the junction box is a closed structure, and the heat generated by the terminal contact resistance during motor operation is difficult to dissipate. Especially in high current operating environments, excessively high internal temperatures will accelerate the aging of the wire insulation and terminals, reducing the lifespan of the device. Existing solutions involve designing heat dissipation fins on the metal junction box shell, using highly conductive materials for the internal terminals to accelerate heat conduction to the shell, and adding a temperature sensor inside the junction box that is linked to the motor controller to automatically reduce the operating frequency when the internal temperature is too high to prevent overheating. However, heat dissipation fins are only effective in well-ventilated environments, and their heat dissipation effect decreases in enclosed spaces. Furthermore, the integration of the temperature sensor increases circuit complexity and failure rate. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an asynchronous motor junction box structure, which aims to improve the problems in the prior art where the heat dissipation effect of the heat sink fins decreases in a closed space, while the integration of temperature sensors increases circuit complexity and failure rate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an asynchronous motor junction box structure, including a motor core, a lead box fixedly connected to the front side of the motor core, a heat dissipation mechanism provided on the inner wall of the lead box, a base plate fixedly connected to the bottom of the motor core, a connecting mechanism provided on the top of the base plate, a heat insulation mechanism provided on the inner wall of the lead box, a terminal fixedly connected to the front side of the inner wall of the lead box, and a wiring mechanism provided on the front side of the lead box;

[0007] The heat dissipation mechanism includes a graphene plate, the front side of which is fixedly connected to the rear side of the terminal. A heat spreader is fixedly connected to the rear side of the graphene plate, and heat dissipation fins are fixedly connected to the rear side of the heat spreader. A miniature heat pipe is fixedly connected to the rear side of the heat dissipation fins. Ventilation holes are provided on both the left and right sides of the outer wall of the lead box. A miniature fan is fixedly connected to the inner wall of each of the two ventilation holes. A dustproof heat dissipation mesh is fixedly connected to the inner wall of each of the two ventilation holes. An air guide assembly is provided on the inner wall of the lead box.

[0008] As a further description of the above technical solution:

[0009] The connecting mechanism includes multiple elastic buckles, the tops of which are fixedly connected to the bottom left and right sides of the lead box. Multiple positioning holes are provided on the top front side of the base plate. Magnetic blocks one are fixedly connected to the bottom left and right sides of the lead box. Two magnetic blocks two are fixedly connected to the top front side of the base plate. Multiple bolts are threadedly connected to the outer wall of the lead box. Spring washers are slidably connected to the middle of the outer wall of each bolt. Anti-loosening nuts are threadedly connected to the bottom of the outer wall of each bolt. A buffer assembly is provided at the bottom of the lead box.

[0010] As a further description of the above technical solution:

[0011] The insulation mechanism includes multiple insulation boards, the outer walls of which are fixedly connected to the inner wall of the lead box. The inner wall of the lead box has multiple hollow buffer cavities, and the inner walls of the multiple hollow buffer cavities are fixedly connected with insulation cotton.

[0012] As a further description of the above technical solution:

[0013] The wiring mechanism includes an insulating base, the rear side of which is fixedly connected to the front side of the terminal, and the front side of the insulating base is fixedly connected to two waterproof connectors.

[0014] As a further description of the above technical solution:

[0015] The air guide assembly includes a micro motor, the top of which is fixedly connected to the top of the inner wall of the lead box, the output end of which is fixedly connected to a rotating shaft, and the outer wall of the rotating shaft is fixedly connected to two air guide plates.

[0016] As a further description of the above technical solution:

[0017] The buffer assembly includes a sealing ring, the top of which is fixedly connected to the bottom of the lead box, and a sealing groove is provided on the top front side of the base plate.

[0018] As a further description of the above technical solution:

[0019] A rubber pad is fixedly connected to the bottom of the base plate, and multiple anti-slip strips are fixedly connected to the bottom of the rubber pad.

[0020] As a further description of the above technical solution:

[0021] Multiple temperature sensors are fixedly connected to the left and right sides of the outer wall of the terminal, and a buzzer is fixedly connected to the top of the lead box.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the graphene plate quickly absorbs the heat generated by the terminal and transfers it to the heat spreader plate due to its high thermal conductivity. The heat spreader plate evenly diffuses the heat and expands the heat dissipation area through the heat dissipation fins. The micro heat pipe guides some of the heat to the rear side of the inner wall of the lead box. At the same time, the micro fan in the ventilation hole forms a directional airflow, which enables the air guide plate to accurately guide the cold air, accelerates heat exchange, and the dust screen ensures clean airflow, improves heat dissipation efficiency, avoids overheating of components, and extends service life.

[0024] 2. In this utility model, the elastic buckle is initially fixed by being inserted into the positioning hole and the lateral displacement is limited. The magnetic attraction force between the first magnetic block and the second magnetic block enhances the tightness of the connection. Then, it is locked by bolts and anti-loosening nuts. The spring washer buffers vibration. Through the cooperation of multiple components, the vibration resistance of the device is enhanced, the connection is stable and durable, and the sealing performance is increased. Attached Figure Description

[0025] Figure 1 This is a perspective view of an asynchronous motor junction box structure proposed in this utility model;

[0026] Figure 2 This is a front view of an asynchronous motor junction box structure proposed in this utility model;

[0027] Figure 3 This is a cross-sectional view of the base plate of an asynchronous motor junction box structure proposed in this utility model;

[0028] Figure 4 This is a cross-sectional view of the lead box of an asynchronous motor junction box structure proposed in this utility model;

[0029] Figure 5 This is an exploded view of the rubber pad in the asynchronous motor junction box structure proposed in this utility model;

[0030] Figure 6 This is a split view of the terminals of an asynchronous motor junction box structure proposed in this utility model.

[0031] Legend:

[0032] 1. Motor mechanism; 2. Lead box; 3. Heat dissipation mechanism; 301. Graphene plate; 302. Heat spreader; 303. Heat dissipation fins; 304. Ventilation holes; 305. Miniature fan; 306. Miniature heat pipe; 307. Dustproof heat dissipation mesh; 308. Air guide assembly; 3081. Miniature motor; 3082. Rotating shaft; 3083. Air guide plate; 4. Base plate; 5. Connecting mechanism; 501. Elastic buckle; 502. Positioning hole; 503. Magnetic block 504. Magnetic block two; 505. Bolt; 506. Anti-loosening nut; 507. Spring washer; 508. Buffer assembly; 5081. Sealing ring; 5082. Sealing groove; 6. Insulation mechanism; 601. Insulation board; 602. Hollow buffer cavity; 603. Insulation cotton; 7. Terminal; 8. Wiring mechanism; 801. Insulating base; 802. Waterproof connector; 9. Rubber pad; 10. Anti-slip strip; 11. Temperature sensor; 12. Buzzer. Detailed Implementation

[0033] 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.

[0034] Reference Figure 3 , Figure 4 and Figure 6 This utility model provides an embodiment of an asynchronous motor junction box structure, including a motor core 1, a lead box 2 fixedly connected to the front side of the motor core 1, a heat dissipation mechanism 3 provided on the inner wall of the lead box 2, the heat dissipation mechanism 3 being used to accelerate the heat dissipation speed of the internal components of the lead box 2, a base plate 4 fixedly connected to the bottom of the motor core 1, a connecting mechanism 5 provided on the top of the base plate 4, the connecting mechanism 5 being used to connect the base plate 4 and the lead box 2, a heat insulation mechanism 6 provided on the inner wall of the lead box 2, the heat insulation mechanism 6 being used to prevent the temperature inside the lead box 2 from being affected by the outside, a terminal 7 fixedly connected to the front side of the inner wall of the lead box 2, the terminal 7 being the main heat-generating component in the device, and a wiring mechanism 8 provided on the front side of the lead box 2, the wiring mechanism 8 being used for wiring;

[0035] The heat dissipation mechanism 3 includes a graphene plate 301, which accelerates heat conduction. The front side of the graphene plate 301 is fixedly connected to the rear side of the terminal 7. A heat spreader 302 is fixedly connected to the rear side of the graphene plate 301, which ensures uniform heat distribution and prevents localized overheating. Heat dissipation fins 303 are fixedly connected to the rear side of the heat spreader 302, increasing the heat dissipation area. A micro heat pipe 306 is fixedly connected to the rear side of the heat dissipation fins 303, guiding some of the heat. The heat is more easily blown away by the miniature fan 305. Ventilation holes 304 are provided on both the left and right sides of the outer wall of the lead box 2. The ventilation holes 304 are used to allow air to circulate inside and outside the lead box 2. The inner walls of the two ventilation holes 304 are fixedly connected to miniature fans 305. The miniature fans 305 are used to accelerate the air flow speed. The inner walls of the two ventilation holes 304 are fixedly connected to dustproof heat dissipation mesh 307. The dustproof heat dissipation mesh 307 is used to prevent dust. The inner wall of the lead box 2 is provided with an air guide component 308. The air guide component 308 is used to guide the air flow direction inside the lead box 2.

[0036] The air guide assembly 308 includes a micro motor 3081, which provides power for the rotation of the air guide plate 3083. The top of the micro motor 3081 is fixedly connected to the top of the inner wall of the lead box 2. The output end of the micro motor 3081 is fixedly connected to a rotating shaft 3082, which is used to transmit power. Two air guide plates 3083 are fixedly connected to the outer wall of the rotating shaft 3082, which is used to guide cool air to the high heat area.

[0037] Specifically, when the asynchronous motor junction box is running, terminal 7, as the main heat-generating component, generates heat. The graphene plate 301 behind terminal 7 quickly absorbs the heat and conducts it forward, efficiently transferring it to the heat spreader 302 using its high thermal conductivity. The heat spreader 302 evenly diffuses the localized heat across the entire surface, effectively preventing localized high temperatures at terminal 7. Meanwhile, the heat dissipation fins 303 behind the heat spreader 302 further expand the heat dissipation area. Simultaneously, the micro heat pipe 306 guides some of the heat from the fins to the rear inner wall of the junction box 2, improving heat dissipation efficiency. When the fan 305 inside the ventilation holes 304 on both sides of the junction box 2 starts, it draws in cold air from the outside and exhausts hot air, forming a directional airflow. The dustproof heat dissipation mesh 307 filters dust from the air. At the same time, the micro motor 3081 drives the rotating shaft 3082 to rotate, which drives the air guide plate 3083 to adjust its angle, precisely guiding the incoming cold air to the heat spreader 302 and the heat dissipation fins 303, accelerating the heat exchange between heat and air, optimizing the airflow path, effectively reducing the temperature inside the terminal 7 and the junction box 2, and ensuring the stable operation of the asynchronous motor junction box.

[0038] Reference Figure 1 , Figure 3 and Figure 5 The connecting mechanism 5 includes multiple elastic buckles 501, the tops of which are fixedly connected to the bottom left and right sides of the lead box 2. Multiple positioning holes 502 are provided on the top front side of the base plate 4. The elastic buckles 501 can engage with the positioning holes 502 to initially fix the connection between the lead box 2 and the base plate 4. Magnetic blocks 1 503 are fixedly connected to the bottom left and right sides of the lead box 2, and two magnetic blocks 2 504 are fixedly connected to the top front side of the base plate 4. Magnetic blocks 1 503 and magnetic blocks 2 504 have magnetic attraction, enabling... To increase connection stability, the outer wall of the lead box 2 is threaded with multiple bolts 505, which penetrate the bottom of the lead box 2 and the base plate 4. Spring washers 507 are slidably connected to the middle of the outer wall of each bolt 505 to reduce vibration. Anti-loosening nuts 506 are threaded to the bottom of the outer wall of each bolt 505. The base plate 4 and the lead box 2 are connected and fixed by the cooperation of the bolts 505 and anti-loosening nuts 506. A buffer component 508 is provided at the bottom of the lead box 2 to buffer vibration.

[0039] The buffer assembly 508 includes a sealing ring 5081, which can seal the connection and reduce vibration. The top of the sealing ring 5081 is fixedly connected to the bottom of the lead box 2. A sealing groove 5082 is provided on the front side of the top of the base plate 4. The sealing groove 5082 is used to accommodate the sealing ring 5081.

[0040] Specifically, during installation, first align the elastic buckle 501 at the bottom of the lead box 2 with the positioning hole 502 on the base plate 4, and press it to make the buckle 501 snap into the positioning hole 502, completing the initial fixation. At the same time, the magnetic block 503 at the bottom of the lead box 2 and the magnetic block 504 on the base plate 4 adhere to each other due to magnetic attraction, enhancing the connection stability. Next, insert the bolt 505 through the bottom of the lead box 2 and the base plate 4, put on the spring washer 507, and then tighten the anti-loosening nut 506 until the spring washer 507 deforms, using the spring washer... The elasticity of ring 507 counteracts the vibration generated during operation. Meanwhile, the sealing ring 5081 at the bottom of lead box 2 is embedded in the sealing groove 5082 of base plate 4, which can both seal and buffer vibration. During operation, the elastic buckle prevents the device from shifting laterally, the magnetic attraction helps to prevent the device from loosening, and the bolt 505 and anti-loosening nut 506 provide continuous fastening force. The vibration generated by the motor is buffered by the dual structure of spring washer 507 and sealing ring 5081, ensuring that lead box 2 and base plate 4 are firmly connected.

[0041] Reference Figure 1 , Figure 2 and Figure 3The insulation mechanism 6 includes multiple insulation panels 601, which are used to insulate the device. The outer walls of the multiple insulation panels 601 are fixedly connected to the inner wall of the lead box 2. The inner wall of the lead box 2 has multiple hollow buffer cavities 602, and the inner walls of the multiple hollow buffer cavities 602 are fixedly connected with heat insulation cotton 603 to increase the heat insulation effect. The wiring mechanism 8 includes an insulating base 801, which is used to prevent the device shell from conducting electricity. The rear side of the insulating base 801 is fixedly connected to the front side of the terminal 7. Two waterproof connectors 802 are fixedly connected to the front side of the insulating base 801. A rubber pad 9 is fixedly connected to the bottom of the base plate 4. The rubber pad 9 is used to increase the shock absorption capacity. Multiple anti-slip strips 10 are fixedly connected to the bottom of the rubber pad 9. The anti-slip strips 10 are used to increase the friction between the device and the ground. Multiple temperature sensors 11 are fixedly connected to the left and right sides of the outer wall of the terminal 7. The multiple temperature sensors 11 are used to detect the temperature at different positions of the terminal 7. A buzzer 12 is fixedly connected to the top of the lead box 2. The buzzer 12 will sound an alarm when the temperature of the terminal 7 is too high.

[0042] Specifically, during device operation, multiple heat insulation boards 601 on the inner wall of the lead box 2 form an inner heat insulation barrier, reducing heat exchange between the box and the outside. The hollow buffer cavity 602 on the inner wall is filled with heat insulation cotton 603. Through the double barrier of the air layer and the heat insulation cotton 603, the heat insulation effect is further enhanced, maintaining a stable temperature inside the box. In the wiring mechanism 8, the insulating base 801 isolates the terminal 7 from the outer shell of the lead box 2 to prevent the outer shell from becoming electrified, while the waterproof connector 802 fixes the external wires to prevent moisture from entering the wiring point. The rubber pad 9 at the bottom of the base plate 4 absorbs the vibration force of the motor, and the anti-slip strip 10 increases the friction with the ground to prevent the device from shifting. The temperature sensors 11 on both sides of the terminal 7 monitor the temperature at different locations in real time, and when the temperature is too high, the buzzer 12 on the top of the lead box 2 immediately sounds an alarm to remind the staff to deal with it in time and ensure the safe operation of the device.

[0043] Working principle: Terminal 7 generates a large amount of heat during device operation. This heat is first rapidly absorbed by the graphene plate 301 attached to the back of terminal 7. Utilizing the high thermal conductivity of the graphene plate 301, the heat is transferred to the heat spreader 302. The heat spreader 302, through internal medium circulation, evenly diffuses the localized heat across the entire plate surface, preventing localized high temperatures at terminal 7. The diffused heat is then conducted through the heat spreader 302 to the heat dissipation fins 303. The fins accelerate heat dissipation by increasing their surface area. Simultaneously, the micro heat pipe 306 guides some of the heat to… The rear inner wall of the junction box 2 improves heat dissipation efficiency. At the same time, the miniature fan 305 in the ventilation holes 304 on both sides of the junction box 2 forms a directional airflow, drawing in cold air and expelling hot air. The miniature motor 3081 of the air guide assembly 308 drives the air guide plate 3083 to adjust the angle, precisely guiding the cold air to the heat dissipation plate 302, heat dissipation fins 303 and miniature heat pipe 306, accelerating the heat dissipation speed of the device. The dustproof heat dissipation mesh 307 ensures the cleanliness of the airflow, prevents dust from clogging the filter, effectively reduces the internal temperature, and ensures the stable operation of the junction box.

[0044] Furthermore, the elastic buckle 501 engages with the positioning hole 502 to form a preliminary mechanical fixation, limiting the relative lateral displacement of the base plate 4 and the lead box 2. The magnetic attraction of magnetic block 1 503 and magnetic block 2 504 enhances the tightness of the device connection and helps prevent loosening. At the same time, the bolt 505 and the anti-loosening nut 506 provide continuous axial tightening force through threaded connection. With the elastic deformation of the spring washer 507, the impact force generated by the vibration during device operation is converted into elastic force, which counteracts the tendency of the connection to loosen. In addition, the sealing ring 5081 is embedded in the sealing groove 5082, which can not only buffer the longitudinal vibration force through elastic deformation, but also achieve the sealing of the connection. Through the all-round cooperation of multiple components, the vibration during motor operation is effectively resisted, ensuring long-term stability of the connection.

[0045] 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. An asynchronous motor junction box structure, comprising a motor core (1), characterized in that: A lead box (2) is fixedly connected to the front side of the motor core (1). A heat dissipation mechanism (3) is provided on the inner wall of the lead box (2). A base plate (4) is fixedly connected to the bottom of the motor core (1). A connecting mechanism (5) is provided on the top of the base plate (4). A heat preservation mechanism (6) is provided on the inner wall of the lead box (2). A terminal (7) is fixedly connected to the front side of the inner wall of the lead box (2). A wiring mechanism (8) is provided on the front side of the lead box (2). The heat dissipation mechanism (3) includes a graphene plate (301), the front side of which is fixedly connected to the rear side of the terminal (7), a heat spreader (302) is fixedly connected to the rear side of the graphene plate (301), a heat dissipation fin (303) is fixedly connected to the rear side of the heat spreader (302), a miniature heat pipe (306) is fixedly connected to the rear side of the heat dissipation fin (303), ventilation holes (304) are provided on both the left and right sides of the outer wall of the lead box (2), a miniature fan (305) is fixedly connected to the inner wall of each of the two ventilation holes (304), a dustproof heat dissipation mesh (307) is fixedly connected to the inner wall of each of the two ventilation holes (304), and an air guide assembly (308) is provided on the inner wall of the lead box (2).

2. The asynchronous motor junction box structure according to claim 1, characterized in that: The connecting mechanism (5) includes multiple elastic buckles (501), the tops of which are fixedly connected to the bottom left and right sides of the lead box (2). The top front side of the base plate (4) is provided with multiple positioning holes (502). The bottom left and right sides of the lead box (2) are fixedly connected with magnetic blocks (503). The top front side of the base plate (4) is fixedly connected with two magnetic blocks (504). The outer wall of the lead box (2) is threaded with multiple bolts (505). The middle part of the outer wall of the multiple bolts (505) is slidably connected with spring washers (507). The bottom end of the outer wall of the multiple bolts (505) is threaded with anti-loosening nuts (506). The bottom of the lead box (2) is provided with a buffer assembly (508).

3. The asynchronous motor junction box structure according to claim 1, characterized in that: The insulation mechanism (6) includes multiple insulation panels (601), the outer walls of the multiple insulation panels (601) are fixedly connected to the inner wall of the lead box (2), the inner wall of the lead box (2) is provided with multiple hollow buffer cavities (602), and the inner walls of the multiple hollow buffer cavities (602) are fixedly connected with insulation cotton (603).

4. The asynchronous motor junction box structure according to claim 1, characterized in that: The wiring mechanism (8) includes an insulating base (801), the rear side of which is fixedly connected to the front side of the terminal (7), and the front side of which is fixedly connected to two waterproof connectors (802).

5. The asynchronous motor junction box structure according to claim 1, characterized in that: The air guide assembly (308) includes a micro motor (3081), the top of which is fixedly connected to the top of the inner wall of the lead box (2), and the output end of the micro motor (3081) is fixedly connected to a rotating shaft (3082). Two air guide plates (3083) are fixedly connected to the outer wall of the rotating shaft (3082).

6. The asynchronous motor junction box structure according to claim 2, characterized in that: The buffer assembly (508) includes a sealing ring (5081), the top of which is fixedly connected to the bottom of the lead box (2), and a sealing groove (5082) is provided on the front side of the top of the base plate (4).

7. The asynchronous motor junction box structure according to claim 1, characterized in that: A rubber pad (9) is fixedly connected to the bottom of the base plate (4), and a plurality of anti-slip strips (10) are fixedly connected to the bottom of the rubber pad (9).

8. The asynchronous motor junction box structure according to claim 1, characterized in that: Multiple temperature sensors (11) are fixedly connected to the left and right sides of the outer wall of the terminal (7), and a buzzer (12) is fixedly connected to the top of the lead box (2).

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