Miniature brushless motor for new energy automobile

Abstract

The utility model relates to the technical field of brushless motors, and discloses a miniature brushless motor for a new energy automobile, which comprises a motor main body, and is characterized in that the output end of the motor main body is fixedly connected with a rotating shaft, the outer side of the rotating shaft is rotatably connected with a fixed plate, and one side, close to the motor main body, of the fixed plate is fixedly connected with a front shell; the front shell is provided with a limiting groove, a filter screen is arranged in the limiting groove, a rear shell is inserted into one side, far away from the rotating shaft, of the front shell, and the rear shell is fixedly connected with the inner side of the motor main body, so that external dust is prevented from entering the outer surface of the motor main body by forming the limiting groove in the front shell and arranging the filter screen in the limiting groove; therefore, the service life of the motor is indirectly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless motors, and in particular to a micro brushless motor for new energy vehicles. Background Art

[0002] Automotive micromotors, also known as micro-special motors, are miniature special motors used in automobiles. They integrate high-tech technologies from multiple disciplines such as motors, microelectronics, power electronics, computers, automatic control, precision machinery, and new materials. They are the actuators of basic functions such as braking, steering, heat dissipation, and battery charging. They are also the main actuators of comfort functions such as automobile air conditioning, seats, and shock absorbers. According to the working principle and power supply, automotive micromotors can be divided into many types, such as DC brush motors and DC brushless motors. These different types of micromotors play their respective roles in different systems and components of the car.

[0003] However, although the shell of the existing micro motor has a certain dust-proof ability, it is insufficient in terms of ventilation and heat dissipation. In addition, it is inconvenient when the shell needs to be opened to clean the dust. When the motor works for a long time and releases a lot of heat, the dust accumulated on the motor shell may affect the normal heat dissipation of the motor. In view of this, a micro brushless motor for new energy vehicles is proposed. Utility Model Content

[0004] In order to solve the technical problem of dust prevention of brushless motors, the utility model provides a micro brushless motor for new energy vehicles.

[0005] The utility model is implemented by the following technical solution: a micro brushless motor for new energy vehicles, including a motor body, the output end of the motor body is fixedly connected to a rotating shaft, the outer side of the rotating shaft is rotatably connected to a fixed plate, the side of the fixed plate close to the motor body is fixedly connected to a front shell, a limiting groove is provided on the front shell, and a filter is provided inside the limiting groove.

[0006] As a further improvement of the above solution, a rear shell is inserted into a side of the front shell away from the rotating shaft, and the rear shell is fixedly connected to the inner side of the motor body.

[0007] As a further improvement of the above solution, a plurality of hollow grooves are provided on the outer side of the front housing, and the plurality of hollow grooves are used to dissipate heat from the motor body.

[0008] As a further improvement of the above solution, a plurality of pressing plates are fixedly connected to one side of the filter screen close to the fixed plate, and a connecting rod fixing mechanism is provided on each of the plurality of pressing plates.

[0009] As a further improvement of the above-mentioned solution, the connecting rod fixing mechanism includes a plurality of connecting rods fixedly connected between the rear shell and the fixing plate, the plurality of connecting rods are distributed in a circular array, the plurality of connecting rods are paired with the plurality of pressure plates respectively, and each of the connecting rods passes outward through the fixing plate and is fixedly connected to the pressure plate.

[0010] As a further improvement of the above solution, an inner ring is provided between the rear shell and the front shell.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model provides a limit groove inside the front housing and sets a filter in the limit groove to prevent external dust from entering the outer surface of the motor body and affecting the normal heat dissipation of the motor, thereby indirectly improving the service life of the motor;

[0013] 2. The utility model installs and fixes the front shell, the rear shell, the pressure plate and the filter screen through a connecting rod. When a large amount of dust accumulates on the filter screen, the connecting rod can be removed to take out the filter screen, making it convenient for staff to clean the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a micro brushless motor for new energy vehicles provided by the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the first explosion structure;

[0016] Figure 3 for Figure 1 Schematic diagram of the second explosion structure;

[0017] Figure 4 for Figure 3 Side view of;

[0018] Figure 5 for Figure 4 A schematic structural diagram of the middle front housing (2).

[0019] Description of main symbols:

[0020] 1. Rear housing; 2. Front housing; 3. Filter; 4. Pressure plate; 5. Fixing plate; 6. Connecting rod; 7. Motor body; 8. Rotating shaft; 10. Grooves; 11. Limiting grooves; 12. Inner ring. DETAILED DESCRIPTION

[0021] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] Example:

[0023] Please combine Figures 1-4 , a micro brushless motor for new energy vehicles of this embodiment includes a motor body 7, which is a brushless motor consisting of a stator and a rotor. The output end of the motor body 7 is fixedly connected to a rotating shaft 8, and the outer side of the rotating shaft 8 is rotatably connected to a fixed plate 5. The fixed plate 5 is a circular structure, and the rotating shaft 8 passes through the fixed plate 5 outward, and the fixed plate 5 provides support for the rotating shaft 8. The fixed plate 5 is fixedly connected to a front shell 2 on the side close to the motor body 7. The front shell 2 is a cylindrical structure, and a limiting groove 11 is provided on the front shell 2. A filter screen 3 is provided inside the limiting groove 11. When the motor is working, the airflow driven by the filter screen 3 can filter the dust from the outside and block it on the filter screen 3 to prevent it from entering the core components inside the motor. The front shell 2 can prevent large objects from colliding with the core structure inside the motor body 7, and at the same time, it can also avoid the occurrence of electric shock, providing safety protection.

[0024] Please combine Figure 2 As shown, the rear housing 1 is inserted into the side of the front housing 2 away from the rotating shaft 8. The rear housing 1 is fixedly connected to the inner side of the motor body 7. The ports of the rear housing 1 and the front housing 2 are docked with each other, which facilitates the rapid installation and assembly of the motor housing. A power connection device is provided on the rear side of the rear housing 1, which passes through the rear housing 1 and establishes a connection with the motor body 7.

[0025] Please combine Figure 2 As shown, a plurality of grooves 10 are provided on the outer side of the front shell 2. The area of ​​the grooves 10 should not be too large so as to provide effective protective support for the motor body 7. The plurality of grooves 10 are used to dissipate heat from the motor body 7. When a large amount of heat is generated during operation of the motor, gas can be exchanged with the outside world through the filter mesh 3 on the grooves 10, thereby achieving the effect of heat dissipation and cooling.

[0026] Please combine Figure 3 As shown, three pressing plates 4 are fixedly connected to one side of the filter screen 3 close to the fixing plate 5. The three pressing plates 4 are all provided with a connecting rod fixing mechanism. A screw hole is opened on each pressing plate 4 to facilitate the passage of the connecting rod 6.

[0027] Please combine Figure 3 As shown, the connecting rod fixing mechanism includes three connecting rods 6 fixedly connected between the rear shell 1 and the fixed plate 5. The three connecting rods 6 are distributed in a circular array. The three connecting rods 6 are paired with the three pressure plates 4 respectively. Each connecting rod 6 passes through the fixed plate 5 outward and is fixedly connected to the pressure plate 4. Through the connecting rods 6, the pressure plate 4 can be assembled with the front shell 2 and the rear shell 1 at the same time, which facilitates the rapid assembly of the filter 3 and the motor.

[0028] Please combine Figure 4As shown, an inner ring 12 is provided between the rear shell 1 and the front shell 2, and the rear shell 1 and the front shell 2 can be seamlessly connected through the inner ring 12, which facilitates quick assembly and quick disassembly.

[0029] The implementation principle of a micro brushless motor for new energy vehicles in the embodiment of the present application is: when a large amount of dust accumulates on the filter 3 and needs to be cleaned, first remove the nut on the connecting rod 6 from one end of the fixing plate 5, then pull the connecting rod 6 out of one side of the rear shell 1, and then pull the filter 3 out of the limiting groove 11, and clean the dust attached to the filter 3 to avoid dust accumulation on the motor shell causing heat dissipation difficulties.

[0030] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A micro brushless motor for new energy vehicles, comprising a motor body (7), characterized in that: The output end of the motor body (7) is fixedly connected to a rotating shaft (8), the outer side of the rotating shaft (8) is rotatably connected to a fixed plate (5), the side of the fixed plate (5) close to the motor body (7) is fixedly connected to a front housing (2), a limiting groove (11) is provided on the front housing (2), a filter (3) is provided inside the limiting groove (11), and a plurality of hollow grooves (10) are provided on the outer side of the front housing (2), and the plurality of hollow grooves (10) are used to dissipate heat from the motor body (7).

2. A micro brushless motor for new energy vehicles as claimed in claim 1, characterized in that: A rear housing (1) is inserted into the side of the front housing (2) away from the rotating shaft (8), and the rear housing (1) is fixedly connected to the inner side of the motor body (7).

3. A micro brushless motor for new energy vehicles as claimed in claim 2, characterized in that: A plurality of pressing plates (4) are fixedly connected to one side of the filter screen (3) close to the fixing plate (5), and a connecting rod fixing mechanism is provided on each of the plurality of pressing plates (4).

4. A micro brushless motor for new energy vehicles as claimed in claim 3, characterized in that: The connecting rod fixing mechanism comprises a plurality of connecting rods (6) fixedly connected between the rear housing (1) and the fixing plate (5), wherein the plurality of connecting rods (6) are distributed in a circular array, and the plurality of connecting rods (6) are respectively paired with the plurality of pressure plates (4), and each connecting rod (6) passes through the fixing plate (5) outwardly and is fixedly connected to the pressure plate (4).

5. A micro brushless motor for new energy vehicles as claimed in claim 2, characterized in that: An inner ring (12) is provided between the rear housing (1) and the front housing (2).

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