DC brushless motor structure

Abstract

The utility model discloses a direct-current brushless motor structure, which comprises a motor casing, a stator arranged in the motor casing, a rotor arranged outside the stator, a motor shaft connected with the rotor, and an oil cup support sleeved on the motor shaft, an opening in one end of the oil cup support is attached to the end face of the motor shell to form an oil storage cavity, the end face sealing head is located in the oil cup support, and the stator is fixed to the outer side of the oil cup support. According to the direct current brushless motor structure, the oil cup support is sleeved on the motor shaft, and the lubricating oil is stored through the oil cup support structure, so that the frequency of adding the lubricating oil can be greatly reduced, the motor is convenient to maintain, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to a motor structure, in particular to a DC brushless motor structure. Background Art

[0002] A DC brushless motor is a motor that realizes the rotation of the rotor by electronically controlling the direction of the current. It combines the advantages of DC motors and AC motors, and has the characteristics of high efficiency, high reliability, long life and low noise. However, despite the many advantages of brushless motors, in practical applications, they still face some challenges in terms of maintenance and performance. Although the design of DC brushless motors aims to reduce the need for maintenance, they still require regular maintenance to maintain optimal performance. A common problem is the friction between the motor shaft and the end face seal head, which usually requires regular lubricant addition to reduce. However, due to the lack of an effective structure for storing lubricant, this results in the motor requiring frequent maintenance, increasing the complexity and cost of operation. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a DC brushless motor structure with a structure capable of storing lubricant, making the motor easy to maintain and reducing the use cost.

[0004] To solve the above technical problem, a DC brushless motor structure of the utility model includes a motor housing, a stator is installed inside the motor housing, a rotor is arranged outside the stator, the rotor is connected with a motor shaft, the motor shaft is cooperatively positioned with the motor housing through an end face seal head, an oil cup support is sleeved on the motor shaft, one end opening of the oil cup support is attached to the end face of the motor housing to form an oil storage cavity, the end face seal head is located inside the oil cup support, and the stator is fixed to the outside of the oil cup support.

[0005] The oil cup support is a stepped structure, the larger-diameter end of the oil cup support is attached to the end face of the motor housing, and the stator is fixed to the smaller-diameter end of the oil cup support. This structure can make full use of the space inside the motor to store more lubricant. The oil cup support is made of materials such as iron, aluminum or plastic, which is beneficial to reducing the production cost.

[0006] The motor housing is composed of a front end cover and a rear end cover, making the motor easy to disassemble, assemble and maintain.

[0007] A commutator connected to the motor shaft is installed on the rear end cover, which can deflect the output power of the motor to meet different working requirements.

[0008] Support rods are installed at the lower part of the motor housing, which can facilitate the installation and use of the motor.

[0009] The beneficial effects of the present utility model are as follows: In this structure of the DC brushless motor, an oil cup support is sleeved on the motor shaft. The lubricating oil for lubricating the motor bearing is stored through the structure of the oil cup support, which can greatly reduce the frequency of adding lubricating oil, making the motor easy to maintain and reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0013] Figure 3 is a schematic structural diagram of the oil cup support. SPECIFIC EMBODIMENTS

[0014] Refer to Figures 1 to 3 , a structure of a DC brushless motor of the present utility model includes a motor housing 1, a stator 2 is installed inside the motor housing 1, a rotor 3 is arranged outside the stator 2, the rotor 3 is connected to a motor shaft 4, the motor 4 shaft is cooperatively positioned with the motor housing 1 through an end face seal head 5, an oil cup support 6 is sleeved on the motor shaft 4, one end of the oil cup support 6 is open and fits with the end face of the motor housing 1 to form an oil storage cavity, the end face seal head 5 is located inside the oil cup support 6, and the stator 2 is fixed outside the oil cup support 6.

[0015] In this embodiment, the oil cup support 6 is of a stepped structure. The end with a larger diameter of the oil cup support 6 fits with the end face of the motor housing 1, and the stator 2 is fixed to the end with a smaller diameter of the oil cup support 6. The motor housing 1 is composed of a front end cover 11 and a rear end cover 12. A commutator 7 connected to the motor shaft 4 is installed on the rear end cover 12. A support rod 8 is installed below the motor housing 1.

[0016] The above are only the preferred embodiments of the present utility model. As long as the technical solutions that achieve the purpose of the present utility model by substantially the same means fall within the protection scope of the present utility model.

Claims

1. A brushless DC motor structure, comprising a motor housing, a stator installed in the motor housing, a rotor arranged outside the stator, and the rotor connected to a motor shaft, characterized in that: The motor shaft is positioned with the motor housing through an end face sealing head. An oil cup support is mounted on the motor shaft. An opening at one end of the oil cup support fits with the end face of the motor housing to form an oil storage cavity. The end face sealing head is located in the oil cup support, and the stator is fixed to the outside of the oil cup support.

2. The brushless DC motor structure according to claim 1, characterized in that: The oil cup support is a step-shaped structure, the end of the oil cup support with a larger diameter is fitted with the end surface of the motor housing, and the stator is fixed to the end of the oil cup support with a smaller diameter.

3. The brushless DC motor structure according to claim 2, characterized in that: The motor housing is composed of a front end cover and a rear end cover.

4. The brushless DC motor structure according to claim 3, characterized in that: The rear end cover is provided with a commutator connected with the motor shaft.

5. The brushless DC motor structure according to claim 1, characterized in that: A support rod is installed at the lower part of the motor housing.

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