CN215817776U - Mini motor of low noise - Google Patents

Abstract

The utility model provides a mini motor of low noise, including the direct current permanent-magnet machine main part, support and rubber post, the motor stabilizer blade is all installed to the bottom both sides front and back end of direct current permanent-magnet machine main part, the bottom of motor stabilizer blade is provided with the support, install the rubber post between the support motor stabilizer blade, the direct current permanent-magnet machine main part includes motor casing, central rotor, stator core and stator winding all set up the inside at motor casing, motor casing includes motor housing, the motor inner shell, the connecting bridge and inhale the sound cotton. The noise-absorbing cotton can absorb noise generated inside the motor during operation, and the rubber columns can absorb and buffer vibration generated during operation of the motor, so that the noise generated by vibration and the abrasion of the motor are reduced, and the purposes of reducing noise and prolonging the service life are achieved.

Description

Mini motor of low noise

Technical Field

The utility model belongs to the technical field of motors, and particularly relates to a low-noise mini motor.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the law of electromagnetic induction, the equipment related to people's life and production almost needs the motor as a main part, the motor plays an important role in people's daily life, the quality of the motor is directly related to the quality of the equipment, the mini motor is also called a micro motor and is a driving device used on smaller equipment, the existing mini motor mostly has the problem of high noise when in use, and the problem of short service life due to easy vibration and structural abrasion when in use is caused, so the existing technology is necessarily improved to solve the existing problems.

Disclosure of Invention

The utility model aims to provide a low-noise mini motor, which is characterized in that sound-absorbing cotton and a rubber column are arranged, the sound-absorbing cotton is arranged between an inner shell and an outer shell of the motor, the sound-absorbing cotton can absorb noise generated by the operation of the motor and can reduce the noise, the use experience is improved, the rubber column is arranged at the bottom of the motor, when the motor vibrates during the operation, the rubber column can play a role in shock absorption and reduce the influence of vibration on a motor support, so that the motor support is more stable, the motor support cannot collide with an installed structure to generate noise, the noise caused by vibration is reduced, the service life of the motor is longer, and the problems of high noise and short service life of the existing motor during the operation are solved.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a low-noise mini motor which comprises a direct-current permanent magnet motor main body, supports and rubber columns, wherein motor support legs are arranged at the front end and the rear end of the two sides of the bottom of the direct-current permanent magnet motor main body, the supports are arranged at the bottoms of the motor support legs, the rubber columns are arranged between the support motor support legs, the direct-current permanent magnet motor main body comprises a motor shell, a central rotor, a stator core and a stator winding, the central rotor, the stator core and the stator winding are all arranged inside the motor shell, the motor shell comprises a motor outer shell, a motor inner shell, a connecting bridge and sound absorbing cotton, the motor inner shell is arranged inside the motor outer shell, the sound absorbing cotton is arranged between the motor outer shell and the motor inner shell, and a plurality of sound absorbing holes are formed in the position, right opposite to the sound absorbing cotton, on the motor inner shell.

Furthermore, the central rotor is arranged in the middle of the motor shell, a stator core is arranged outside the central rotor, a stator winding is arranged between the stator core and the central rotor, a motor rotating shaft is arranged in the middle of the central rotor, the stator winding is electrified to generate a magnetic field to drive the rotor to rotate, and the rotor and the stator core form a finished magnetic circuit of the motor together to drive the motor device.

Further, central rotor all stretches out at the both ends of motor shaft, motor shaft's rear end rotates with the embedded rear bearing of installing at the motor casing rear end and is connected, motor shaft's front end rotates with the embedded front bearing of installing at the motor casing front end and is connected, and front bearing and rear bearing's setting can make motor shaft motor casing's front end and rear end rotate relatively, reaches nimble pivoted purpose.

Furthermore, the cross section of the support is in an isosceles trapezoid shape, the connecting holes are formed in the four corners of the support, the support with the cross section in the isosceles trapezoid shape is adopted, the motor is higher in stability during installation and not prone to noise generation, the motor can be conveniently installed in the appointed equipment through the bolt assembly due to the arrangement of the connecting holes, and convenience in installation of the motor is improved.

Further, the long screw rod has been concatenated in the centre of rubber column, motor stabilizer blade and support are passed respectively to the top and the bottom of long screw rod to hexagon nut is all installed to the top and the bottom of long screw rod, and the setting of long screw rod and hexagon nut can realize having detachability simultaneously to the fixed of rubber column, and the convenience is maintained and is changed after the rubber column is ageing or damages.

Further, equidistant a plurality of connecting bridges that are provided with between motor housing and the motor inner shell, the both ends of connecting the bridge respectively with motor housing and motor inner shell fixed connection, play the effect of connecting motor housing and motor inner shell when the effect of connecting the bridge is on the one hand, on the other hand can be with heat transfer to motor housing on the motor inner shell, the motor of being convenient for dispels the heat.

The utility model has the following beneficial effects:

1. according to the utility model, the motor inner shell, the motor outer shell and the sound absorption cotton are arranged, the sound absorption cotton is arranged between the motor inner shell and the motor outer shell, when the motor runs, internal noise can enter the sound absorption cotton through the sound absorption holes, then the sound absorption cotton absorbs the noise, so that the effect of reducing the noise is achieved, heat generated by the running of the motor can be firstly transmitted to the motor inner shell, then transmitted to the motor outer shell through the connecting bridge by the motor inner shell, and finally transmitted to the air by the motor outer shell, so that the heat dissipation is realized, the effect of reducing the noise is achieved, the heat dissipation of the motor is not influenced, and the problems of large internal noise and poor use experience of the existing motor are solved.

2. According to the utility model, the rubber column is arranged and fixed between the motor support leg and the support under the cooperation of the long screw and the hexagon nut, when the motor generates vibration during operation and vibration waves are transmitted to the rubber column at the lower part of the motor support leg, the rubber column can play a role in damping and reducing noise, so that the vibration sense of the support is reduced, the collision force between the support and the mounted structure is further reduced, and the noise generated by vibration is reduced.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the present invention;

FIG. 2 is a diagram illustrating an internal structure of the main body of the DC permanent magnet motor of FIG. 1 according to the present invention;

fig. 3 is an enlarged view of the structure of fig. 2 at a.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a DC permanent magnet motor main body; 101. a motor housing; 1011. a motor housing; 1012. a motor inner casing; 1013. a connecting bridge; 1014. sound-absorbing cotton; 1015. a sound absorption hole; 102. a central rotor; 103. a stator core; 104. a stator winding; 105. a front bearing; 106. a rear bearing; 107. a motor shaft; 2. a motor support leg; 3. a support; 4. a rubber column; 5. a long screw; 6. a hexagonal nut; 7. and connecting the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the utility model is a low-noise mini motor, comprising a dc permanent magnet motor body 1, a bracket 3 and a rubber column 4, wherein motor legs 2 are respectively installed at the front and rear ends of the bottom of the dc permanent magnet motor body 1, the bottom of the motor legs 2 is provided with the bracket 3, the cross section of the bracket 3 is in an isosceles trapezoid shape, four corners of the bracket 3 are provided with connecting holes 7, the rubber column 4 is installed between the motor legs 2 of the bracket 3, a long screw 5 is connected in series with the middle of the rubber column 4, the top end and the bottom end of the long screw 5 respectively penetrate through the motor legs 2 and the bracket 3, and hexagonal nuts 6 are respectively installed at the top end and the bottom end of the long screw 5, when the motor is started, vibration generated by the operation of the motor is transmitted downwards to the motor legs 2 from the motor body and then is transmitted downwards to the rubber column 4 from the motor legs 2, and the friction between rubber inner parts of the rubber column 4 enables the rubber column to have certain damping performance, the vibration absorbing device has the advantages that the vibration absorbing and absorbing effects can be achieved, and further the vibration is prevented from being transmitted to the support 3, so that the vibration received by the support 3 is reduced, the noise is not generated due to the collision of the support with a mounted structure, and the purpose of reducing the noise is achieved.

Referring to fig. 2-3, a dc permanent magnet motor body 1 includes a motor housing 101, a central rotor 102, a stator core 103 and a stator winding 104, the central rotor 102, the stator core 103 and the stator winding 104 are all disposed inside the motor housing 101, the central rotor 102 is disposed at the middle position of the motor housing 101, the stator core 103 is disposed outside the central rotor 102, the stator winding 104 is disposed between the stator core 103 and the central rotor 102, a motor shaft 107 is mounted in the middle of the central rotor 102, both ends of the motor shaft 107 extend out of the central rotor 102, the rear end of the motor shaft 107 is rotatably connected to a rear bearing 106 embedded at the rear end of the motor housing 101, the front end of the motor shaft 107 is rotatably connected to a front bearing 105 embedded at the front end of the motor housing 101, the motor housing 101 includes a motor outer housing 1011, a motor inner housing, a connecting bridge 1013 and a sound absorbing cotton 1014, the motor inner shell 1012 is arranged in the motor outer shell 1011, the sound absorption cotton 1014 is arranged between the motor outer shell 1011 and the motor inner shell 1012, a plurality of sound absorption holes 1015 are arranged on the motor inner shell 1012 at the position opposite to the sound absorption cotton 1014, a plurality of connecting bridges 1013 are arranged between the motor outer shell 1011 and the motor inner shell 1012 at equal intervals, two ends of each connecting bridge 1013 are fixedly connected with the motor outer shell 1011 and the motor inner shell 1012 respectively, most of the noise inside the motor enters between the motor inner housing 1012 and the motor outer housing 1011 through the sound absorbing holes 1015, then absorbed by the sound absorption cotton 1014 between the motor inner shell 1012 and the motor outer shell 1011 to achieve the purpose of noise reduction, meanwhile, the heat generated by the operation inside the motor is firstly transferred to the motor inner shell 1012, then, the heat is transferred from the motor inner housing 1012 to the motor outer housing 1011 through the connecting bridge 1013, and then is dissipated to the outside air by the motor outer housing 1011, thereby realizing the heat dissipation.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the present invention, and the present invention is not limited thereto, and any modifications to the technical solutions described in the above embodiments, and equivalents of some technical features are included in the scope of the present invention.

Claims (6)

1. The utility model provides a mini motor of low noise, includes direct current permanent-magnet machine main part (1), support (3) and rubber column (4), its characterized in that: the motor support legs (2) are installed at the front end and the rear end of the two sides of the bottom of the direct current permanent magnet motor main body (1), the bottom of the motor support legs (2) is provided with a support (3), rubber columns (4) are installed between the support (3) and the motor support legs (2), the direct current permanent magnet motor main body (1) comprises a motor shell (101), a central rotor (102), a stator core (103) and a stator winding (104), the central rotor (102), the stator core (103) and the stator winding (104) are all arranged inside the motor shell (101), the motor shell (101) comprises a motor outer shell (1011), a motor inner shell (1012), a connecting bridge (1013) and sound absorption cotton (1014), the motor inner shell (1012) is arranged inside the motor outer shell (1011), and the sound absorption cotton (1014) is arranged between the motor outer shell (1011) and the motor inner shell (1012), and a plurality of sound absorbing holes (1015) are formed in the position, which is opposite to the sound absorbing cotton (1014), on the motor inner shell (1012).

2. A low noise mini-motor according to claim 1, wherein the central rotor (102) is disposed at the middle position of the motor housing (101), the outside of the central rotor (102) is provided with a stator core (103), a stator winding (104) is disposed between the stator core (103) and the central rotor (102), and the middle of the central rotor (102) is provided with a motor rotating shaft (107).

3. A low noise mini-motor according to claim 2, wherein both ends of the motor shaft (107) extend out of the central rotor (102), the rear end of the motor shaft (107) is rotatably connected to a rear bearing (106) embedded in the rear end of the motor housing (101), and the front end of the motor shaft (107) is rotatably connected to a front bearing (105) embedded in the front end of the motor housing (101).

4. The mini motor with low noise as claimed in claim 1, wherein the cross section of the bracket (3) is in an isosceles trapezoid shape, and the four corners of the bracket (3) are provided with connecting holes (7).

5. The mini motor with low noise as claimed in claim 1, wherein a long screw (5) is connected in series in the middle of the rubber column (4), the top end and the bottom end of the long screw (5) respectively pass through the motor support leg (2) and the bracket (3), and hexagonal nuts (6) are installed on the top end and the bottom end of the long screw (5).

6. The mini motor with low noise as claimed in claim 1, wherein a plurality of connecting bridges (1013) are disposed between the motor outer shell (1011) and the motor inner shell (1012) at equal intervals, and both ends of the connecting bridges (1013) are fixedly connected to the motor outer shell (1011) and the motor inner shell (1012), respectively.

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