CN218920156U

CN218920156U - Miniature DC motor of vibration/noise reduction formula

Info

Publication number: CN218920156U
Application number: CN202222700632.1U
Authority: CN
Inventors: 林淡标; 林钰熙
Original assignee: Jieyang Yuxin Motor Co ltd
Current assignee: Jieyang Yuxin Motor Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-04-25
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses a damping and noise-reducing miniature direct current motor, which comprises a miniature direct current motor main body, wherein the miniature direct current motor main body comprises a rotating shaft, stators, a rotor and a metal shell, the rotor is arranged in the metal shell, the stators are arranged on two sides of the rotor, the rotor is rotatably connected with the metal shell through the rotating shaft, a rear end cover is fixedly arranged at one end of the metal shell, a sound insulation shell is fixedly arranged on the outer side of the metal shell, a sound insulation layer is arranged on the inner wall of the sound insulation shell, air outlets are formed in the sound insulation shell and the sound insulation layer, and a fan is arranged in a mounting cavity of the rear end cover. The beneficial effects of the utility model are as follows: the damping and noise-reducing miniature direct current motor effectively reduces noise and improves the problem of internal high temperature through the built-in fan.

Description

Miniature DC motor of vibration/noise reduction formula

Technical Field

The utility model relates to the technical field of direct current motors, in particular to a damping and noise reduction type miniature direct current motor, and belongs to the technical field of direct current motors.

Background

The direct current motor is a motor driven by a direct current power supply to realize high-speed rotation, and most of miniature direct current motors on the market have basically the same structure.

The micro direct current motor in the existing market often has great noise when in operation, and the heat generated in the direct current motor can not be effectively discharged in time, so that the normal operation of the motor is affected;

the main reason for this problem is that the rotor inside the motor rotates at a high speed under the action of the magnetic field generated by the current, friction and collision are inevitably generated between the rotor and the housing in the rotating process, noise and friction heat are generated, the internal space of the motor is small, heat is difficult to rapidly discharge, and heat accumulation is serious, so that a damping and noise reduction type miniature direct current motor is required to be provided to solve the problems.

Disclosure of Invention

The utility model aims to solve the problems and provide the damping and noise reduction type miniature direct current motor which is simple in structure and high in practicability.

The utility model realizes the purpose through the following technical scheme that the miniature DC motor with vibration and noise reduction comprises;

the miniature direct current motor comprises a miniature direct current motor body, a motor body and a motor body, wherein the miniature direct current motor body comprises a rotating shaft, a stator, a rotor and a metal shell, the rotor is arranged in the metal shell, the stators are arranged on two sides of the rotor, and the rotor is rotationally connected with the metal shell through the rotating shaft;

the one end of metal casing is fixed to be provided with the rear end cap, the metal casing outside is fixed to be provided with sound insulation shell.

Preferably, the inner wall of the sound insulation shell is provided with a sound insulation layer, and the sound insulation shell and the sound insulation layer are provided with air outlets.

Preferably, the metal shell is provided with a heat radiation opening, the outer side of the metal shell is fixedly provided with a heat radiation box, two sides of the heat radiation box are provided with openings, and the openings at two sides of the heat radiation box are internally provided with a filter screen.

Preferably, the heat dissipation box is arranged inside the sound insulation shell, the rear end cover is internally provided with a mounting cavity, the mounting cavity of the rear end cover is internally provided with a fan, one side of the rear end cover, which is close to the metal shell, is provided with a through hole, and the mounting cavity of the rear end cover is communicated with the inside of the sound insulation shell through the through hole.

Preferably, the front end of the metal shell is provided with a front end cover, a protective rubber ring is mounted in the middle of the front end cover, the rotating shaft is rotationally connected to the inside of the protective rubber ring, and a fixing screw used for fixing the front end cover with the metal shell is arranged on the outer surface of the front end cover.

The beneficial effects of the utility model are as follows:

1. this miniature direct current motor of vibration/noise reduction through being provided with sound insulation shell and puigging, can effectively absorb the noise that reduces the work of miniature direct current motor main part inner element and produce, and the fan work can effectively blow in the sound insulation shell inside through the through-hole with outside air, effectively absorbs the heat on the heat dissipation casket to effectively discharge through the air outlet, the radiating effect is better.

2. This miniature direct current motor of vibration/noise reduction formula after long-time use, through unscrewing the fixed screw, then take off the front end cover from the front end of pivot, conveniently clear up inside and maintain.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present utility model;

FIG. 2 is a cross-sectional view of the internal structure of the miniature DC motor body of the present utility model;

fig. 3 is an enlarged schematic view of the structure of fig. 2 a according to the present utility model.

In the figure: 1. a miniature DC motor main body; 101. a rotating shaft; 102. a rotor; 103. a metal housing; 104. a heat radiation port; 2. a front end cover; 3. a set screw; 4. protective rubber rings; 5. a rear end cover; 501. a fan; 502. a through hole; 6. a sound insulation housing; 601. a sound insulation layer; 602. an air outlet; 7. a heat sink box.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model discloses a damping and noise reduction type miniature direct current motor, which is shown in figures 1-3 and comprises the following components;

the miniature direct current motor comprises a miniature direct current motor body 1, wherein the miniature direct current motor body 1 comprises a rotating shaft 101, a stator, a rotor 102 and a metal shell 103, the rotor 102 is arranged in the metal shell 103, the stators are arranged on two sides of the rotor 102, and the rotor 102 is in rotary connection with the metal shell 103 through the rotating shaft 101;

a rear end cover 5 is fixedly arranged at one end of the metal shell 103, and a sound insulation shell 6 is fixedly arranged outside the metal shell 103.

According to the figures 2 and 3, the inner wall of the sound insulation shell 6 is provided with a sound insulation layer 601, the sound insulation shell 6 and the sound insulation layer 601 are provided with an air outlet 602, and through the arrangement of the sound insulation shell 6 and the sound insulation layer 601, noise generated by the operation of the internal components of the miniature direct current motor main body 1 can be effectively absorbed and reduced, and through the arrangement of the air outlet 602, heat generated by the operation of the internal components of the miniature direct current motor main body 1 can be effectively discharged.

According to the drawings 2 and 3, a heat dissipation opening 104 is formed in the metal housing 103, a heat dissipation box 7 is fixedly arranged on the outer side of the metal housing 103, openings are formed in two sides of the heat dissipation box 7, filter screens are arranged in the openings on two sides of the heat dissipation box 7, heat generated by the operation of internal elements of the miniature direct current motor main body 1 can enter the heat dissipation box 7 through the heat dissipation opening 104, and the heat dissipation box 7 can effectively conduct heat.

According to the figures 2 and 3, the heat dissipation box 7 is arranged inside the sound insulation shell 6, the rear end cover 5 is internally provided with a mounting cavity, the mounting cavity of the rear end cover 5 is internally provided with a fan 501, one side of the rear end cover 5, which is close to the metal shell 103, is provided with a through hole 502, the mounting cavity of the rear end cover 5 is communicated with the inside of the sound insulation shell 6 through the through hole 502, external air can be effectively blown into the inside of the sound insulation shell 6 through the through hole 502 when the fan 501 works, heat on the heat dissipation box 7 is effectively absorbed, and is effectively discharged through the air outlet 602, and the heat dissipation effect is good.

According to the figures 1 and 2, the front end of the metal shell 103 is provided with a front end cover 2, the middle part of the front end cover 2 is provided with a protective rubber ring 4, the rotating shaft 101 is rotatably connected in the protective rubber ring 4, and the outer surface of the front end cover 2 is provided with a fixing screw 3 for fixing the metal shell 103.

Working principle: the sound insulation shell 6 and the sound insulation layer 601 are arranged, so that noise generated by the operation of the internal elements of the miniature direct current motor main body 1 can be effectively absorbed and reduced, the heat generated by the operation of the internal elements of the miniature direct current motor main body 1 can be effectively discharged through the air outlet 602, the external air can be effectively blown into the sound insulation shell 6 through the through hole 502 through the operation of the fan 501, the heat on the heat dissipation box 7 can be effectively absorbed, and the heat can be effectively discharged through the air outlet 602, so that the heat dissipation effect is good;

furthermore, it should be understood to those skilled in the art that although the present disclosure describes embodiments, not every embodiment contains only one independent technical solution, and that such descriptions are provided for clarity only, and that the technical solutions of the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

Claims

1. A miniature DC motor with vibration and noise reduction comprises;

the miniature direct current motor comprises a miniature direct current motor body (1), wherein the miniature direct current motor body (1) comprises a rotating shaft (101), a stator, a rotor (102) and a metal shell (103), the rotor (102) is arranged in the metal shell (103), the stators are arranged on two sides of the rotor (102), and the rotor (102) is rotationally connected with the metal shell (103) through the rotating shaft (101);

the method is characterized in that: one end of the metal shell (103) is fixedly provided with a rear end cover (5), and the outer side of the metal shell (103) is fixedly provided with a sound insulation shell (6).

2. The miniature dc motor of claim 1, wherein: the sound insulation shell (6) inner wall is provided with sound insulation layer (601), set up air outlet (602) on sound insulation shell (6) and the sound insulation layer (601).

3. The miniature dc motor of claim 1, wherein: the heat dissipation box is characterized in that a heat dissipation opening (104) is formed in the metal shell (103), a heat dissipation box (7) is fixedly arranged on the outer side of the metal shell (103), openings are formed in two sides of the heat dissipation box (7), and a filter screen is arranged in the openings in two sides of the heat dissipation box (7).

4. A miniature dc motor according to claim 3, wherein: the heat dissipation box (7) is arranged inside the sound insulation shell (6), an installation cavity is formed in the rear end cover (5), a fan (501) is arranged in the installation cavity of the rear end cover (5), a through hole (502) is formed in one side, close to the metal shell (103), of the rear end cover (5), and the installation cavity of the rear end cover (5) is communicated with the inside of the sound insulation shell (6) through the through hole (502).

5. The miniature dc motor of claim 1, wherein: the front end of the metal shell (103) is provided with a front end cover (2), a protective rubber ring (4) is mounted in the middle of the front end cover (2), the rotating shaft (101) is rotationally connected to the inside of the protective rubber ring (4), and a fixing screw (3) used for fixing the metal shell (103) is arranged on the outer surface of the front end cover (2).