Continuous lubrication micro motor

Abstract

The utility model discloses a continuously lubricated micro motor, which comprises a main body frame, a motor shaft and a reversing assembly, a stator is arranged on the inner wall of the main body frame, a rotor is arranged in an inner cavity of the main body frame, the motor shaft penetrates through the rotor, a first support and a second support are respectively arranged at the upper end and the lower end of the main body frame, the first support is provided with a first bearing, and the second support is provided with a second bearing. The first bearing is provided with a first lubricating dustproof sheet; the first lubricating dustproof piece is provided with a straight piece part, an arched middle opening is formed in the middle of the straight piece part, the first bearing is located at the middle opening, and a lubricating oil containing space is jointly defined by the first lubricating dustproof piece, the first support and the first bearing. According to the utility model, the structural design that the first support and the first lubricating dustproof sheet are combined is adopted, the first support facilitates heat dissipation of the motor during working, the first lubricating dustproof sheet can play a dustproof role on the first bearing, and the structural design of the lubricating oil accommodating space is combined, so that lubricating oil can be supplemented to the bearing; the technical effects of dust prevention and continuous lubrication are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a continuously lubricated micro motor. Background Art

[0002] Micro motors are often used in small household appliances such as hair dryers. After long-term use, the motor shaft may become stiff or even unable to rotate. This is usually caused by the evaporation of lubricating oil in the bearings and the entry of dust and fine fibers in the air into the bearings. The existing solution is mainly to adopt a closed outer shell structural design. Although this method can prevent dust and fine fibers in the air from entering the bearings, it also limits the effective heat dissipation of the motor. To this end, we propose a continuously lubricated micro motor. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a continuously lubricated micro motor.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a continuously lubricated micro motor, including a main frame, a motor shaft, and a reversing assembly, the inner wall of the main frame is provided with a stator, the inner cavity of the main frame is provided with a rotor matching the stator, the motor shaft is passed through the rotor, the upper and lower ends of the main frame are respectively provided with a first bracket and a second bracket, the first bracket and the second bracket are respectively provided with a first bearing and a second bearing at the rotation connection with the motor shaft, the first bearing and the second bearing are respectively provided with a first lubricating dustproof sheet and a second lubricating dustproof sheet; the first lubricating dustproof sheet is provided with a straight sheet portion for fixed connection with the first bracket, the middle of the straight sheet portion is provided with an arched middle opening, the first bearing is located at the middle opening, and the first lubricating dustproof sheet, the first bracket, and the first bearing together form a lubricating oil containing space.

[0005] To further explain, a first elastic gasket group is provided between the first bearing and the rotor, the upper end of the first elastic gasket group is in conflict with the first bearing, and the lower end of the first elastic gasket group is in conflict with the rotor.

[0006] To further explain, the structure of the second lubricating dustproof sheet is the same as the structure of the first lubricating dustproof sheet.

[0007] It is further explained that the commutation assembly includes a commutator, and the commutator is arranged at the lower end of the rotor. Brushes are arranged on the left and right sides of the commutator.

[0008] It is further explained that a second elastic gasket group is provided between the second bearing and the commutator, the upper end of the second elastic gasket group is in conflict with the commutator, and the lower end of the first elastic gasket group is in conflict with the second bearing.

[0009] To further explain, the first bracket and the second bracket are both U-shaped, and the first bracket and the main frame, as well as the second bracket and the main frame, are both connected by screws.

[0010] The beneficial effect of the utility model is that the utility model adopts a structural design combining a first bracket and a first lubricating dust-proof sheet. The first bracket is convenient for the motor to dissipate heat when working. The first lubricating dust-proof sheet can play a dust-proof role for the first bearing. The first lubricating dust-proof sheet, the first bracket, and the first bearing are combined to form a lubricating oil containing space. The lubricating oil containing space replenishes lubricating oil to the bearing, thereby achieving the technical effect of dust prevention and continuous lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a cross-sectional view of the utility model.

[0013] Figure 3 It is a schematic diagram of the structural decomposition of the utility model.

[0014] Figure 4 It is a schematic diagram of the structural decomposition of the utility model.

[0015] Figure numbers: 10, main frame; 11, first bracket; 12, second bracket; 20, motor shaft; 21, first bearing; 22, second bearing; 30, reversing assembly; 31, commutator; 32, brush; 40, stator; 50, rotor; 61, first lubricating dustproof sheet; 610, lubricating oil containing space; 611, straight sheet portion; 612, middle opening; 62, second lubricating dustproof sheet; 71, first elastic gasket group; 72, second elastic gasket group. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Combined with Figure 1 To Attachment Figure 4As shown, a continuously lubricated micro motor includes a main frame 10, a motor shaft 20, and a reversing assembly 30. A stator 40 is provided on the inner wall of the main frame 10, a rotor 50 matching the stator 40 is provided in the inner cavity of the main frame 10, and the motor shaft 20 is passed through the rotor 50. A first bracket 11 and a second bracket 12 are respectively provided at the upper and lower ends of the main frame 10. The first bracket 11 and the second bracket 12 are both U-shaped, and the first bracket 11 and the main frame 10, and the second bracket 12 and the main frame 10 are screw-connected. The structure of the first bracket 11 and the second bracket 12 is conducive to heat dissipation when the motor is working.

[0018] Combined with Figure 2 and attached Figure 3 As shown, the first bracket 11 and the second bracket 12 are respectively provided with a first bearing 21 and a second bearing 22 at the rotation connection with the motor shaft 20, and the first bearing 21 and the second bearing 22 are respectively provided with a first lubricating dustproof sheet 61 and a second lubricating dustproof sheet 62;

[0019] The first lubricating dustproof sheet 61 is provided with a straight sheet portion 611 for fixed connection with the first bracket 11, and a raised middle opening 612 is provided in the middle of the straight sheet portion 611. The first bearing 21 is located at the middle opening 612. The first lubricating dustproof sheet 61, the first bracket 11, and the first bearing 21 together form a lubricating oil containing space 610. The first lubricating dustproof sheet 61 can prevent dust and fine fibers in the air from entering the bearing, and the lubricating oil containing space 610 can contain lubricating oil. When the lubricating oil at the first bearing 21 is reduced due to volatilization, the lubricating oil in the lubricating oil containing space 610 can replenish the lubricating oil for the first bearing 21.

[0020] In order to facilitate heat dissipation of the motor during operation, the first bracket 11 adopts a U-shaped structural design, but this structure is easy to enter dust. The first lubricating dustproof sheet 61 can play a dust-proof role for the first bearing 21. The first lubricating dustproof sheet 61, the first bracket 11, and the first bearing 21 are combined to form a lubricating oil containing space 610. The lubricating oil containing space 610 replenishes lubricating oil to the bearing, thereby achieving the dual effects of dustproofing and lubrication.

[0021] The structure of the second lubricating dustproof sheet 62 is the same as that of the first lubricating dustproof sheet 61. The second lubricating dustproof sheet 62 can also prevent dust and fine fibers in the air from entering the bearing. When the lubricating oil at the second bearing 22 is reduced due to volatilization, the lubricating oil in the lubricating oil containing space of the second lubricating dustproof sheet 62 can replenish the lubricating oil for the second bearing 22.

[0022] A first elastic washer set 71 is provided between the first bearing 21 and the rotor 50 . The upper end of the first elastic washer set 71 abuts against the first bearing 21 , and the lower end of the first elastic washer set 71 abuts against the rotor 50 .

[0023] Combined with Figure 2 and attached Figure 4 As shown, the commutation assembly 30 includes a commutator 31, which is disposed at the lower end of the rotor 50, and brushes 32 are disposed on both the left and right sides of the commutator 31. A second elastic gasket group 72 is disposed between the second bearing 22 and the commutator 31, and the upper end of the second elastic gasket group 72 is in conflict with the commutator 31, and the lower end of the first elastic gasket group 71 is in conflict with the second bearing 22.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0026] The above description does not limit the technical scope of the present invention. Any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A continuously lubricated micro motor, comprising a main frame (10), a motor shaft (20), and a reversing assembly (30), wherein a stator (40) is provided on the inner wall of the main frame (10), a rotor (50) matching with the stator (40) is provided in the inner cavity of the main frame (10), and the motor shaft (20) passes through the rotor (50), characterized in that: A first bracket (11) and a second bracket (12) are respectively arranged at the upper and lower ends of the main frame (10); a first bearing (21) and a second bearing (22) are respectively arranged at the rotation connection between the first bracket (11) and the second bracket (12) and the motor shaft (20); a first lubricating dustproof sheet (61) and a second lubricating dustproof sheet (62) are respectively arranged at the first bearing (21) and the second bearing (22); the first lubricating dustproof sheet (61) is provided with a straight sheet portion (611) for fixed connection with the first bracket (11); a raised middle opening (612) is arranged in the middle of the straight sheet portion (611); the first bearing (21) is located at the middle opening (612); the first lubricating dustproof sheet (61), the first bracket (11), and the first bearing (21) together enclose a lubricating oil containing space (610).

2. A continuously lubricated micromotor according to claim 1, characterized in that: A first elastic gasket group (71) is provided between the first bearing (21) and the rotor (50), the upper end of the first elastic gasket group (71) abuts against the first bearing (21), and the lower end of the first elastic gasket group (71) abuts against the rotor (50).

3. A continuously lubricated micromotor according to claim 1, characterized in that: The structure of the second lubricating dustproof sheet (62) is the same as the structure of the first lubricating dustproof sheet (61).

4. A continuously lubricated micromotor according to claim 3, characterized in that: The commutation assembly (30) comprises a commutator (31), wherein the commutator (31) is arranged at the lower end of the rotor (50), and brushes (32) are arranged on both the left and right sides of the commutator (31).

Images