Multi-magnet square coil closed-loop motor

Abstract

The utility model discloses a multi-magnet square coil closed-loop motor, and relates to the technical field of closed-loop motors, and the motor comprises a fixed end cover, the rear end of the fixed end cover is provided with a motor main body, the outer side of the fixed end cover is provided with a fixed plate, the outer side of the motor main body is provided with a stable protection assembly, and the surface of the motor main body is provided with a heat dissipation plate. The stable protection assembly comprises a protection shell movably connected to the outer side of the motor body, and a stable pad is arranged on the inner side of the protection shell. The whole motor body is installed in the protective shell and protected through the protective shell, meanwhile, the motor is prevented from being affected by an external magnetic field in the use process through the insulation performance and the magnetic isolation performance of the ceramic composite material, the stability of the motor in the use process is ensured, the motor body is extruded to a certain degree through the stabilizing pad, and the stability of the motor is improved. The motor main body is prevented from shaking in the protective shell, and the noise reduction effect is improved while the stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of closed-loop motor technology, and in particular to a multi-magnet square coil closed-loop motor. Background Technology

[0002] The multi-magnet square coil closed-loop motor is a special type of voice coil motor, mainly used in the autofocus system of cameras. The working principle of this motor is to use the interaction between the magnetic field generated by the permanent magnet and the energized coil to produce regular movements. The multi-magnet square coil closed-loop motor is characterized by simple structure, small size, fast response, high acceleration and high speed, so it is widely used in cameras of devices such as laptops, webcams, video surveillance, scanners, and mobile phones.

[0003] A search revealed that the document with publication number "CN210724528U" mentions "a multi-magnet square coil closed-loop motor, including a shell, a base, a carrier, a coil, a lower spring, and an upper spring. The shell covers the base, and the carrier, coil, lower spring, and upper spring are installed within the space defined by the shell and the base. The lower spring is positioned between the base and the carrier and is energized by the coil. The upper spring is positioned between the carrier and the shell to act on the carrier. The coil is a square coil, positioned around the carrier, and a group of bar magnets is arranged around the perimeter of the carrier to induct with the square coil." This design utilizes a square coil in conjunction with square bar magnets for higher magnetic field utilization. Furthermore, the circuit can be amplified by capacitors on the circuit board, generating more electromagnetic force to drive the carrier. However, the use of bar magnets also makes the motor more susceptible to interference from external magnetic fields, potentially affecting its performance.

[0004] To address these issues, we provide a multi-magnet square coil closed-loop motor. Utility Model Content

[0005] The purpose of this invention is to provide a multi-magnet square coil closed-loop motor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-magnet square coil closed-loop motor, including a fixed end cover, a motor body installed at the rear end of the fixed end cover, a fixing plate provided on the outer side of the fixed end cover, a stabilizing and protective component provided on the outer side of the motor body, and a heat dissipation plate installed on the surface of the motor body;

[0007] The stabilization and protection assembly includes a protective housing movably connected to the outside of the motor body, and a stabilizing pad is provided on the inner side of the protective housing.

[0008] Preferably, the surface of the protective shell is made of ceramic composite material, and a connecting buckle is provided on the outer front end of the protective shell, wherein the connecting buckle and the fixing plate are connected by a slot.

[0009] Preferably, the four corners of the connecting buckle are provided with fixing holes, and the fixing plate is provided with corresponding holes at the positions corresponding to the fixing holes.

[0010] Preferably, the stabilizing pad is made of rubber and is tightly fitted to the motor body.

[0011] Preferably, the heat sink is arranged in four groups evenly distributed on the surface of the motor body, and the heat sink is made of alumina ceramic.

[0012] Preferably, the inner wall of the protective shell is provided with a heat conduction groove, the rear end of the protective shell is fixedly connected to a mounting bracket, and a cooling fan is installed on the inner side of the mounting bracket.

[0013] Preferably, the inner side of the heat conduction groove is provided with an air inlet mesh, which is made of stainless steel.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The motor body is installed entirely into the protective housing, which protects it. The insulation and magnetic shielding properties of the ceramic composite material prevent the motor from being affected by external magnetic fields during use, ensuring the stability of the motor. The stabilizing pads apply pressure to the motor body to prevent it from shaking inside the protective housing, improving stability and noise reduction.

[0016] 2. The heat sink improves the heat dissipation of the motor body, and the cooling fan draws air outward to expel the heat on the heat sink through the heat conduction grooves, preventing heat from accumulating inside the protective shell and ensuring the motor's performance. The air intake mesh ensures airflow within the heat conduction grooves and prevents a large amount of dust from entering the protective shell, which would cause dust accumulation and affect the heat dissipation effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the mating structure of the motor body and the protective shell proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the mating structure of the motor body and the heat sink proposed in this utility model;

[0020] Figure 4This is a schematic diagram of the internal structure of the protective shell proposed in this utility model.

[0021] In the diagram: 1. Fixed end cap; 2. Motor body; 3. Fixing plate; 4. Stabilizing and protective components; 401. Protective shell; 402. Connecting buckle; 403. Fixing hole; 404. Stabilizing pad; 5. Heat sink; 6. Heat conduction groove; 7. Mounting bracket; 8. Cooling fan; 9. Air inlet mesh. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 As shown, a multi-magnet square coil closed-loop motor includes a fixed end cover 1, a motor body 2 installed at the rear end of the fixed end cover 1, a fixing plate 3 provided on the outer side of the fixed end cover 1, a stabilizing and protective component 4 provided on the outer side of the motor body 2, and a heat dissipation plate 5 installed on the surface of the motor body 2.

[0024] The stabilizing and protective assembly 4 includes a protective housing 401 that is movably connected to the outside of the motor body 2, and a stabilizing pad 404 is provided on the inner side of the protective housing 401.

[0025] Furthermore, the surface of the protective housing 401 is made of ceramic composite material, and a connecting buckle 402 is provided on the outer front end of the protective housing 401. The connecting buckle 402 and the fixing plate 3 are connected by a slot. The motor body 2 is installed into the protective housing 401 as a whole, and is protected by the protective housing 401. At the same time, the insulation and magnetic shielding properties of the ceramic composite material prevent the motor from being affected by external magnetic fields during use, thereby improving the stability of the motor.

[0026] Furthermore, the four corners of the connecting buckle 402 are provided with fixing holes 403, and the fixing plate 3 is provided with corresponding holes at the corresponding positions of the fixing holes 403. The connecting buckle 402 is connected and fixed to the fixing plate 3 by external bolts to ensure the stability of the motor body 2 installation.

[0027] Furthermore, the stabilizing pad 404 is made of rubber and fits tightly with the motor body 2. The stabilizing pad 404 applies a certain amount of pressure to the motor body 2 to prevent the motor body 2 from shaking inside the protective shell 401, thereby improving stability and increasing noise reduction.

[0028] Furthermore, the heat sink 5 is evenly distributed in four groups on the surface of the motor body 2. The heat sink 5 is made of alumina ceramic, which improves the heat dissipation effect on the motor body 2.

[0029] Furthermore, the inner wall of the protective housing 401 is provided with a heat conduction groove 6, and the rear end of the protective housing 401 is fixedly connected to a mounting bracket 7. A cooling fan 8 is installed on the inner side of the mounting bracket 7. When the cooling fan 8 is turned on, it draws air outward and discharges the heat on the heat sink 5 to the outside through the heat conduction groove 6, so as to avoid the heat from accumulating inside the protective housing 401 and ensure the performance of the motor.

[0030] Furthermore, an air inlet mesh 9 is provided on the inner side of the heat conduction groove 6. The air inlet mesh 9 is made of stainless steel. The air inlet mesh 9 ensures the airflow in the heat conduction groove 6 and can filter dust in the air to a certain extent, preventing a large amount of dust from entering the protective shell 401 and causing dust accumulation to affect the heat dissipation effect.

[0031] Working principle: First, install the device at the desired location. Then, install the motor body 2 entirely into the protective housing 401. The housing 401 protects the motor and, through the insulation and magnetic shielding properties of the ceramic composite material, prevents the motor from being affected by external magnetic fields during use. Next, connect and secure the connecting buckle 402 to the fixing plate 3 using external bolts to ensure the stability of the motor body 2. Second, use the stabilizing pad 404 to apply pressure to the motor body 2 to prevent it from shaking within the protective housing 401. To improve stability and reduce noise, the third step involves improving the heat dissipation of the motor body 2 through the heat sink 5, while simultaneously starting the cooling fan 8 to draw air outwards, expelling the heat from the heat sink 5 through the heat conduction groove 6, thus preventing heat accumulation inside the protective shell 401 and ensuring the motor's performance. The fourth step involves ensuring airflow within the heat conduction groove 6 through the air intake mesh 9, which also filters dust from the air, preventing a large amount of dust from entering the protective shell 401 and causing dust accumulation that affects the heat dissipation. This completes the use of a multi-magnet square coil closed-loop motor.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-magnet square coil closed-loop motor, comprising a fixed end cover (1), characterized in that: The motor body (2) is installed at the rear end of the fixed end cover (1), a fixing plate (3) is provided on the outside of the fixed end cover (1), a stabilizing protection component (4) is provided on the outside of the motor body (2), and a heat sink (5) is installed on the surface of the motor body (2). The stabilizing and protective assembly (4) includes a protective housing (401) movably connected to the outside of the motor body (2), and a stabilizing pad (404) is provided on the inner side of the protective housing (401).

2. The multi-magnet square coil closed-loop motor according to claim 1, characterized in that, The surface of the protective shell (401) is made of ceramic composite material. A connecting buckle (402) is provided on the outer front side of the protective shell (401). The connecting buckle (402) and the fixing plate (3) are connected by a slot.

3. The multi-magnet square coil closed-loop motor according to claim 2, characterized in that, The four corners of the connecting buckle (402) are provided with fixing holes (403), and the fixing plate (3) is provided with corresponding holes at the positions corresponding to the fixing holes (403).

4. The multi-magnet square coil closed-loop motor according to claim 1, characterized in that, The stabilizing pad (404) is made of rubber and is tightly fitted to the motor body (2).

5. A multi-magnet square coil closed-loop motor according to claim 1, characterized in that, The heat sink (5) is evenly distributed in four groups on the surface of the motor body (2), and the heat sink (5) is made of alumina ceramic.

6. A multi-magnet square coil closed-loop motor according to claim 1, characterized in that, The inner wall of the protective shell (401) is provided with a heat conduction groove (6), and the rear end of the protective shell (401) is fixedly connected to a mounting bracket (7), and a cooling fan (8) is installed on the inner side of the mounting bracket (7).

7. A multi-magnet square coil closed-loop motor according to claim 6, characterized in that, The heat conduction groove (6) has an air inlet mesh (9) on its inner side, and the air inlet mesh (9) is made of stainless steel.

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