Micro motor

Abstract

The utility model relates to the technical field of micro motors, in particular to a micro motor which comprises a shell, a threaded hole is formed in the right end of the shell, the shell is in threaded connection with a screw through the threaded hole, a rear cover is installed on the shell through the screw, a heat dissipation structure is installed on the outer wall of the rear cover, and the heat dissipation structure comprises a first fixing ring. The heat dissipation structure comprises a shell and a first fixing ring, a rear lantern ring is installed on the side wall of the first fixing ring, the heat dissipation structure further comprises a second fixing ring, a front lantern ring is installed on the side wall of the second fixing ring, cooling fins are slidably connected to the inner wall of the front lantern ring, a stator is installed on the inner wall of the shell, and the shell is rotationally connected with a rotating shaft through a connecting hole. The heat dissipation structure is arranged to replace a traditional mode that heat dissipation holes are used for heat dissipation of the micro motor, the heat dissipation effect of the micro motor is improved, and therefore the service life of the micro motor is prolonged.

Description

Technical Field

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

[0002] Micro motors are small in size and capacity, with output power generally below a few hundred watts. They generate heat during operation. Traditional motors are relatively closed devices, and the heat generated is not easy to dissipate, which leads to an increase in the temperature inside the motor. The increase in motor temperature can cause the motor to demagnetize, thus affecting the performance and life of the motor.

[0003] Traditional micro motors use heat dissipation holes to dissipate heat, but the heat dissipation effect is poor, which affects the service life of the micro motor. Therefore, a micro motor is needed to improve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a micro motor to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A micro motor comprises a shell, a threaded hole is provided at the right end of the shell, a screw is threadedly connected to the shell through the threaded hole, a rear cover is installed on the shell through the screw, a heat dissipation structure is installed on the outer wall of the rear cover, the heat dissipation structure comprises a first fixing ring, a rear sleeve ring is installed on the side wall of the first fixing ring, the heat dissipation structure also comprises a second fixing ring, a front sleeve ring is installed on the side wall of the second fixing ring, a heat sink is slidably connected to the inner wall of the front sleeve ring, a stator is installed on the inner wall of the shell, the shell is rotatably connected to a rotating shaft through a connecting hole, and a rotor is installed on the outer wall of the rotating shaft and inside the stator.

[0007] As a preferred solution of the utility model, a plurality of threaded holes are provided and are evenly distributed at the right end of the shell, and a stepped hole corresponding to the threaded hole is provided on the back cover.

[0008] As a preferred solution of the utility model, the inner wall of the first fixing ring is fixedly connected to the outer wall of the rear cover, and the inner wall of the front sleeve ring is fixedly connected to the outer wall of the shell.

[0009] As a preferred solution of the utility model, the inner wall of the heat sink is slidably connected to the outer wall of the shell, the heat sink is slidably connected to the outer wall of the rear ring, and the right inner wall of the heat sink is slidably connected to the outer wall of the rear cover.

[0010] As a preferred solution of the utility model, the heat sink is arranged in a cylindrical structure, and the heat sink and the housing are arranged to be matched.

[0011] As a preferred solution of the utility model, the first fixing ring and the second fixing ring have the same structure, and the rear sleeve ring and the front sleeve ring have the same structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, a heat dissipation structure is provided in a micro motor, and the heat sink in the component is utilized to transfer the heat on the housing and the back cover to the air through the surface of the heat dissipation fins. The flow of air accelerates the diffusion speed of the heat, thereby achieving more efficient heat dissipation. The heat dissipation structure is provided to replace the traditional micro motor heat dissipation method using heat dissipation holes, thereby improving the heat dissipation effect of the micro motor and extending the service life of the micro motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the three-dimensional splitting of the utility model;

[0016] Figure 3 It is a schematic diagram of the partial cutaway structure of the utility model.

[0017] In the figure: 1. shell; 2. threaded hole; 3. screw; 4. back cover; 5. heat dissipation structure; 501. first fixing ring; 502. rear ring; 503. second fixing ring; 504. front ring; 505. heat sink; 6. stator; 7. rotating shaft; 8. rotor; 9. stepped hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] Example: See Figure 1-3 A micro motor shown in the figure comprises a shell 1, a threaded hole 2 is provided at the right end of the shell 1, a screw 3 is threadedly connected to the shell 1 through the threaded hole 2, a rear cover 4 is installed on the shell 1 through the screw 3, a heat dissipation structure 5 is installed on the outer wall of the rear cover 4, the heat dissipation structure 5 comprises a first fixing ring 501, a rear ring 502 is installed on the side wall of the first fixing ring 501, the heat dissipation structure 5 also comprises a second fixing ring 503, a front ring 504 is installed on the side wall of the second fixing ring 503, a heat sink 505 is slidably connected to the inner wall of the front ring 504, the shell A stator 6 is installed on the inner wall of the body 1, and the shell 1 is rotatably connected to a rotating shaft 7 through a connecting hole. A rotor 8 is installed on the outer wall of the rotating shaft 7 and inside the stator 6. The heat sink 505 in the component is used to transfer the heat on the shell 1 and the back cover 4 to the air through the surface of the heat dissipation fins. The flow of air accelerates the diffusion speed of the heat, thereby achieving more efficient heat dissipation. By setting the heat dissipation structure 5, the traditional micro-motor heat dissipation method using heat dissipation holes is replaced, thereby improving the heat dissipation effect of the micro-motor and extending the service life of the micro-motor.

[0023] In this embodiment, refer to Figure 2 As shown, a plurality of threaded holes 2 are provided and evenly distributed at the right end of the housing 1, and a stepped hole 9 corresponding to the threaded hole 2 is provided on the rear cover 4; the inner wall of the first fixing ring 501 is fixedly connected to the outer wall of the rear cover 4, and the inner wall of the front sleeve ring 504 is fixedly connected to the outer wall of the housing 1; the stepped hole 9 corresponding to the threaded hole 2 is provided on the rear cover 4, so that the screw 3 can be installed in a hidden manner, thereby making it more beautiful;

[0024] In this embodiment, refer to Figure 2 and 3As shown, the inner wall of the heat sink 505 is slidably connected to the outer wall of the housing 1, the heat sink 505 is slidably connected to the outer wall of the rear ring 502, and the inner wall on the right side of the heat sink 505 is slidably connected to the outer wall of the rear cover 4; the heat sink 505 is arranged in a cylindrical structure, and the heat sink 505 and the housing 1 are adapted to each other; the first fixing ring 501 and the second fixing ring 503 have the same structure, and the rear ring 502 and the front ring 504 have the same structure; the heat sink 505 and the housing 1 are adapted to each other, so that the heat dissipation effect of the micro motor is better;

[0025] Working principle: When the micromotor is in use, it generates heat, which is conducted to the housing 1 and the back cover 4. The heat sink 505 is used to transfer the heat on the housing 1 and the back cover 4 to the air through the surface of the heat sink fins. The flow of air accelerates the diffusion rate of heat, thereby achieving more efficient heat dissipation. The heat dissipation structure 5 is provided to replace the traditional micromotor heat dissipation method using heat dissipation holes, thereby improving the heat dissipation effect of the micromotor and extending the service life of the micromotor.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A micro motor, comprising a housing (1), characterized in that: A threaded hole (2) is provided at the right end of the housing (1), a screw (3) is threadedly connected to the housing (1) through the threaded hole (2), a rear cover (4) is mounted on the housing (1) through the screw (3), a heat dissipation structure (5) is mounted on the outer wall of the rear cover (4), a stator (6) is mounted on the inner wall of the housing (1), a rotating shaft (7) is rotatably connected to the housing (1) through the connecting hole, and a rotor (8) is mounted on the outer wall of the rotating shaft (7) and inside the stator (6); The heat dissipation structure (5) comprises a first fixing ring (501), a rear ring (502) being mounted on a side wall of the first fixing ring (501), and the heat dissipation structure (5) further comprises a second fixing ring (503), a front ring (504) being mounted on a side wall of the second fixing ring (503), and a heat sink (505) being slidably connected to an inner wall of the front ring (504).

2. A micro motor according to claim 1, characterized in that: A plurality of threaded holes (2) are provided and are evenly distributed at the right end of the housing (1), and a stepped hole (9) corresponding to the threaded hole (2) is provided on the rear cover (4).

3. A micro motor according to claim 1, characterized in that: The inner wall of the first fixing ring (501) is fixedly connected to the outer wall of the rear cover (4), and the inner wall of the front sleeve ring (504) is fixedly connected to the outer wall of the housing (1).

4. A micro motor according to claim 1, characterized in that: The inner wall of the heat sink (505) is slidably connected to the outer wall of the housing (1), the heat sink (505) is slidably connected to the outer wall of the rear sleeve ring (502), and the right inner wall of the heat sink (505) is slidably connected to the outer wall of the rear cover (4).

5. A micro motor according to claim 1, characterized in that: The heat sink (505) is arranged in a cylindrical structure, and the heat sink (505) and the housing (1) are arranged to match each other.

6. A micro motor according to claim 1, characterized in that: The first fixing ring (501) and the second fixing ring (503) have the same structure, and the rear sleeve ring (502) and the front sleeve ring (504) have the same structure.

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