Novel motor

Abstract

The utility model provides a novel motor, and belongs to the field of motors. The problem that seepage water easily enters the rear end cover of the motor is solved. The novel motor comprises a motor shell, a rear end cover and a fan, the cross section of the rear end cover is of a splayed structure, the fan is contained in the rear end cover, the opening end of the rear end cover is provided with a heat dissipation grating which has the functions of preventing impurities from invading and enhancing heat dissipation, the rear end of the motor shell is fixedly provided with a waterproof cylinder, and the waterproof cylinder wraps the rear end cover and the fan. The open end of the waterproof cylinder is provided with a conical water baffle, the conical tip portion of the water baffle extends out of the waterproof cylinder and is fixedly connected with the waterproof cylinder through connecting ribs distributed at intervals in the circumferential direction, the water baffle and the rear end cover are coaxially arranged, an annular waterproof gap is formed between the water baffle and the rear end cover, and the outer wall of the waterproof cylinder is provided with a plurality of arc-shaped ring portions distributed at intervals in the axial direction. A flow guide ring groove is formed between every two adjacent ring parts. The waterproof fabric has the advantage of being waterproof.

Description

Technical Field

[0001] This utility model belongs to the field of electric motors, and relates to an electric motor, and more particularly to a novel electric motor. Background Technology

[0002] With the widespread application of electric motors in new energy vehicles, industrial equipment, and home appliances, their operational reliability faces diverse environmental challenges. The rear end cover of the motor, as a key heat dissipation component, is typically designed with heat dissipation grilles to enhance air convection and reduce the operating temperature of internal windings and electronic components. However, traditional heat dissipation grille structures have significant drawbacks under complex operating conditions: the open design of the heat dissipation holes makes it easy for external liquids (such as rainwater, cleaning water, or condensate) to seep into the motor, causing problems such as insulation failure, bearing corrosion, or short circuits, seriously threatening the motor's safety and lifespan. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a novel motor to solve these problems.

[0004] The purpose of this utility model can be achieved through the following technical solution: a novel motor, including a motor housing, a rear end cover and a fan, characterized in that the cross section of the rear end cover is in the shape of an "eight" and the fan is housed inside it, and the opening end of the rear end cover is provided with a heat dissipation grille that has both the function of preventing impurities from entering and enhancing heat dissipation.

[0005] The rear end of the motor housing is fixed with a waterproof cylinder, which covers the rear end cover and the fan. The open end of the waterproof cylinder is provided with a conical water baffle. The tip of the water baffle extends out of the waterproof cylinder and is fixed to the waterproof cylinder by circumferentially spaced connecting ribs.

[0006] The baffle plate and the rear end cover are coaxially arranged, forming an annular waterproof gap between them;

[0007] The outer wall of the waterproof cylinder is provided with multiple arc-shaped rings spaced apart along the axial direction, and the adjacent rings form a flow guiding ring groove.

[0008] In the aforementioned novel motor, the waterproof sleeve is fixedly connected to the motor housing by fastening screws, and a sealing ring is provided at the fixed connection to prevent water leakage. The sealing ring is interference-fitted with the outside of the motor housing.

[0009] In the aforementioned novel motor, the width of the annular waterproof gap is 2-5mm, and the bottom of the gap is provided with equally spaced drainage holes.

[0010] Compared with existing technologies, this new type of motor has the following advantages:

[0011] 1. The "eight"-shaped rear end cover and heat dissipation grille form a directional air duct, which improves heat dissipation efficiency. Its guide ring groove optimizes airflow distribution, avoids local hot spots, and extends motor life.

[0012] 2. The active drainage structure is formed by the annular waterproof gaps and drainage holes, which can greatly resist water intrusion. The mechanical design of its conical water baffle and connecting ribs takes into account both waterproof performance and structural strength, forming multiple waterproof protections. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the new type of motor.

[0014] Figure 2 This is a partial cross-sectional structural diagram of the new type of motor.

[0015] In the diagram, 1 is the motor housing; 2 is the rear end cover; 3 is the fan; 4 is the heat dissipation grille; 5 is the waterproof sleeve; 6 is the water baffle; 7 is the connecting rib; 8 is the waterproof gap; 9 is the ring; and 10 is the drainage hole. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 , Figure 2 As shown, this novel motor includes a motor housing 1, a rear end cover 2, and a fan 3. The rear end cover 2 has an "eight" shaped cross-section, which houses the fan 3. The opening end of the rear end cover 2 is provided with a heat dissipation grille 4, which serves to prevent impurities from entering and enhance heat dissipation. A waterproof cylinder 5 is fixed to the rear end of the motor housing 1. The waterproof cylinder 5 covers the rear end cover 2 and the fan 3. Its opening end is provided with a conical baffle 6. The tip of the baffle 6 extends out of the waterproof cylinder 5 and is fixed to the waterproof cylinder 5 through circumferentially spaced connecting ribs 7. The baffle 6 and the rear end cover 2 are coaxially arranged, forming an annular waterproof gap 8 between them. The outer wall of the waterproof cylinder 5 is provided with multiple arc-shaped rings 9 spaced along the axial direction, and adjacent rings 9 form a guide ring groove.

[0018] The waterproof sleeve 5 is fixedly connected to the motor housing 1 by fastening screws. A sealing ring is provided at the fixed connection to prevent water leakage, and the sealing ring is interference-fitted with the outside of the motor housing 1. The annular waterproof gap 8 is 2-5mm wide, and equidistant drainage holes 10 are opened at the bottom of the gap. A directional airflow channel is formed by the figure-eight-shaped rear end cover 2 and the heat dissipation grille 4, improving heat dissipation efficiency. Its guide ring groove optimizes airflow distribution, avoids localized hot spots, and extends motor life. The annular waterproof gap 8 and drainage holes 10 constitute an active drainage structure, which can greatly resist water intrusion. The mechanical design of its conical water baffle 6 and connecting rib 7 balances waterproof performance and structural strength, forming multiple layers of waterproof protection.

[0019] Working principle

[0020] The rear cover 2 adopts an "eight"-shaped cross-section structure, housing the fan 3 internally, with a heat dissipation grille 4 at the open end. When the fan 3 is running, the airflow accelerates through the grille, effectively removing heat from the motor's interior. Simultaneously, the dense grille design balances heat dissipation resistance with dust prevention, blocking external dust, debris, and other impurities from entering, achieving both heat dissipation and protection. A conical baffle 6 coaxially forms an annular waterproof gap 8 (2-5mm) with the rear cover 2. When external water flows, the conical structure guides the water outwards, preventing direct entry into the motor. Equidistant drainage holes 10 at the bottom of the gap, combined with the arc-shaped flow path of the guide ring groove, quickly drain accumulated water, preventing water retention and leakage risks. The connection between the waterproof sleeve 5 and the motor housing 1 uses an interference-fit sealing ring, forming a physical barrier to further block water seepage. The arc-shaped ring 9 on the outer wall of the waterproof cylinder 5 forms axially spaced guide ring grooves. When the motor is running at high speed, the external airflow is guided to flow along the grooves by aerodynamic effect, which reduces wind resistance and noise and enhances surface heat dissipation efficiency.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0022] Although this document uses a lot of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any kind of additional limitation would contradict the spirit of this invention.

Claims

1. A novel motor, comprising a motor housing (1), a rear end cover (2), and a fan (3), characterized in that, The cross-section of the rear cover (2) is in the shape of an "eight" and the fan (3) is housed inside. The opening end of the rear cover (2) is provided with a heat dissipation grille (4) that has both the function of preventing impurities from entering and enhancing heat dissipation. The rear end of the motor housing (1) is fixed with a waterproof cylinder (5), which covers the rear end cover (2) and the fan (3). The open end of the waterproof cylinder (5) is provided with a conical baffle (6), the tip of which extends out of the waterproof cylinder (5) and is fixed to the waterproof cylinder (5) by connecting ribs (7) distributed circumferentially. The water baffle (6) and the rear cover (2) are coaxially arranged, and an annular waterproof gap (8) is formed between them. The outer wall of the waterproof cylinder (5) is provided with a plurality of arc-shaped rings (9) spaced apart along the axial direction, and the adjacent rings (9) form a flow guide ring groove.

2. The novel motor according to claim 1, characterized in that, The waterproof sleeve (5) is fixedly connected to the motor housing (1) by fastening screws. A sealing ring is provided at the fixed connection to prevent water leakage. The sealing ring is interference fit with the outside of the motor housing (1).

3. The novel motor according to claim 1, characterized in that, The width of the annular waterproof gap (8) is 2-5mm, and drainage holes (10) are provided at equal intervals at the bottom of the gap.

Images