CN216904536U - Motor noise reduction mechanism and low-noise motor - Google Patents
Motor noise reduction mechanism and low-noise motor Download PDFInfo
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- CN216904536U CN216904536U CN202122100113.7U CN202122100113U CN216904536U CN 216904536 U CN216904536 U CN 216904536U CN 202122100113 U CN202122100113 U CN 202122100113U CN 216904536 U CN216904536 U CN 216904536U
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- motor
- rotor
- reduction mechanism
- noise reduction
- central shaft
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Abstract
The utility model discloses a motor noise reduction mechanism and a low-noise motor, which comprise a first support, an elastic gasket and a middle gasket, wherein the middle part of the first support is provided with a central hole for accommodating a central shaft of a rotor of the motor, and the elastic gasket and the middle gasket are sequentially arranged in the central hole from bottom to top. The motor noise reduction mechanism can buffer the axial movement of the central shaft of the motor rotor so as to reduce the noise of the motor.
Description
Technical Field
The utility model relates to a motor, in particular to a motor noise reduction mechanism.
Background
An existing motor generally includes a rotor, a stator core, a stator winding, a front bracket, and a rear bracket, the stator winding is disposed on the stator core, the rotor is disposed in the stator core, the front bracket is disposed at a front end of the stator core, and the rear bracket is disposed at a rear end of the stator core. The front end of the central shaft of the rotor passes through the front support and extends outwards, and the rear end of the central shaft of the rotor is accommodated in the rear support. In the process of motor operation, can produce the axial and move in series when the rotor rotates, if this kind of play is too big, can make the center pin of rotor and after-poppet bump the impact to make the motor take place vibrations than, and follow great noise, thereby reduce the performance of motor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a motor noise reduction mechanism which can buffer axial series motion of a central shaft of a motor rotor so as to reduce noise of a motor.
Another object of the present invention is to provide a low-noise motor with less vibration and low noise
In order to achieve the above object, the noise reduction mechanism for a motor according to the present invention includes a first bracket, an elastic washer, and an intermediate washer, wherein a central hole for receiving a central shaft of a rotor of the motor is formed in a middle portion of the first bracket, and the elastic washer and the intermediate washer are sequentially disposed in the central hole from a bottom portion to an upper portion.
Compared with the prior art, the elastic washer and the middle washer are sequentially arranged in the central hole of the first support from bottom to top, the middle washer can be abutted against the central shaft of the rotor of the motor, the central shaft of the rotor is prevented from being directly contacted with the elastic washer to generate larger friction resistance, the elastic washer can buffer the central shaft of the rotor, and the axial movement of the central shaft of the rotor is greatly reduced, so that the vibration of the motor is effectively reduced, and the noise of the motor is reduced.
Preferably, a first mounting hole concentric with the central hole is formed in the middle of the first bracket to mount a bearing.
Preferably, the elastic washer is a fiber washer.
Preferably, the intermediate gasket is a PEEK gasket. The gasket made of the PEEK material has the performances of high temperature resistance, self lubrication and high mechanism strength, can ensure long service life, and can reduce the friction resistance of the central shaft of the rotor of the motor when the central shaft rotates, thereby further reducing the noise of the motor.
Preferably, the outer circumference of the first bracket is provided with coupling holes circumferentially around the central axis of the first bracket.
The utility model provides a low noise motor, includes rotor, stator core, stator winding, second support and motor noise reduction mechanism, the stator winding set up in stator core, the second support set up in stator core's front end, motor noise reduction mechanism set up in stator core's rear end, wear out the front end of the center pin of rotor outside the second support, the rear end of the center pin of rotor insert in centre bore and terminal surface with the middle packing ring is contradicted.
Preferably, a first mounting hole concentric with the central hole is formed in the middle of the first support; a first bearing is arranged in the first mounting hole to bear the rear end of a central shaft of the rotor; and a second mounting hole is formed in the middle of the second support, and a second bearing is arranged in the second mounting hole to bear the front end of the central shaft of the rotor.
Preferably, the periphery of the stator core is circumferentially provided with a through hole parallel to the central axis of the rotor, the stator core, the second bracket and the first bracket are connected by bolts, and screws of the bolts penetrate through the through holes.
Drawings
Fig. 1 is a structural view of a low noise motor of the present invention.
Fig. 2 is a structural view of a motor noise reduction mechanism in the low noise motor of the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 1.
Detailed Description
In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following detailed description is given with reference to the embodiments and the accompanying drawings.
As shown in fig. 1 to 3, a low noise motor 100 according to the present invention includes a rotor 1, a stator core 2, a stator winding 3, a second bracket 4, and a motor noise reduction mechanism 5, wherein the stator winding 3 is disposed on the stator core 2, the second bracket 4 is disposed at a front end of the stator core 2, the motor noise reduction mechanism 5 is disposed at a rear end of the stator core 2, the motor noise reduction mechanism 5 includes a first bracket 51, an elastic washer 52, and an intermediate washer 53, a center hole 511 for accommodating a center shaft 11 of the rotor 1 of the motor is disposed at a center portion of the first bracket 51, and the elastic washer 52 and the intermediate washer 53 are disposed in the center hole 511 in sequence from bottom to top. The front end of the central shaft 11 of the rotor 1 penetrates out of the second bracket 4. The rear end of the central shaft 11 of the rotor 1 is inserted into the central hole 511, and the end surface of the central shaft 11 abuts against the intermediate washer 53, and the end surface of the central shaft 11 is an arc-shaped surface protruding outward, so that the contact area between the end surface and the intermediate washer 53 is reduced.
Referring to fig. 2 and 3, the elastic washer 52 is a fiber washer, and the fiber washer has a certain elastic buffering function, so as to buffer the central shaft 11 of the rotor 1. The intermediate gasket 53 is a PEEK gasket. The gasket made of the PEEK material has the performances of high temperature resistance, self lubrication and high mechanism strength, can ensure long service life, and can reduce the friction resistance of the central shaft 11 of the rotor 1 of the motor when rotating, thereby further reducing the noise of the motor.
Referring to fig. 1 and 2, a first mounting hole 512 concentric with the central hole 511 is formed in the middle of the first bracket 51. A first bearing 6 is arranged in the first mounting hole 512 to bear the rear end of the central shaft 11 of the rotor 1; a second mounting hole 41 is formed in the middle of the second bracket 4, and a second bearing 7 is arranged in the second mounting hole 41 to bear the front end of the central shaft 11 of the rotor 1.
Referring to fig. 1, the first bracket 51 is circumferentially provided with a connection hole 513 around a central axis of the first bracket 51 at an outer periphery thereof. The outer periphery of the second bracket 4 is provided with coupling holes 42 circumferentially around the central axis of the second bracket 4. The periphery of the stator core 2 is circumferentially provided with a through hole 21 parallel to the central axis 11 of the rotor 1, the through hole 21 is communicated with the connecting hole 513 of the first bracket 51 and the connecting hole 42 of the second bracket 4, and a bolt 8 is arranged in the three through holes, so that the stator core 2, the second bracket 4 and the first bracket 51 are connected and fixed.
Compared with the prior art, the elastic washer 52 and the middle washer 53 are sequentially arranged in the center hole 511 of the first bracket 51 from bottom to top, the middle washer 53 can be abutted against the central shaft 11 of the rotor 1 of the motor, so that the central shaft 11 of the rotor 1 is prevented from being directly contacted with the elastic washer 52 to generate larger friction resistance, the elastic washer 52 can buffer the central shaft 11 of the rotor 1, and the axial movement of the central shaft 11 of the rotor 1 is greatly reduced, so that the vibration of the motor is effectively reduced, and the noise of the motor is reduced.
The structure of the stator winding 3 and the rotor 1 of the low noise motor 100 according to the present invention is well known to those skilled in the art, and will not be described in detail herein.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.
Claims (8)
1. A motor noise reduction mechanism which characterized in that: the motor rotor structure comprises a first support, an elastic gasket and a middle gasket, wherein a central hole for accommodating a central shaft of a rotor of the motor is formed in the middle of the first support, and the elastic gasket and the middle gasket are sequentially arranged in the central hole from bottom to top.
2. The motor noise reduction mechanism according to claim 1, wherein: and a first mounting hole concentric with the central hole is formed in the middle of the first support to mount a bearing.
3. The motor noise reduction mechanism according to claim 1, wherein: the elastic gasket is a fiber gasket.
4. The motor noise reduction mechanism according to claim 1, wherein: the middle washer is a PEEK washer.
5. The motor noise reduction mechanism according to claim 1, wherein: the periphery of the first bracket is circumferentially provided with connecting holes around a central shaft of the first bracket.
6. A low noise motor, characterized in that: the motor noise reduction mechanism comprises a rotor, a stator core, a stator winding, a second support and the motor noise reduction mechanism according to any one of claims 1 to 5, wherein the stator winding is arranged on the stator core, the second support is arranged at the front end of the stator core, the motor noise reduction mechanism is arranged at the rear end of the stator core, the front end of a central shaft of the rotor penetrates out of the second support, and the rear end of the central shaft of the rotor is inserted into a central hole and the end face of the central shaft of the rotor is abutted to a middle gasket.
7. The low noise motor of claim 6, wherein: the middle part of the first bracket is provided with a first mounting hole concentric with the central hole; a first bearing is arranged in the first mounting hole to bear the rear end of a central shaft of the rotor; and a second mounting hole is formed in the middle of the second support, and a second bearing is arranged in the second mounting hole to bear the front end of the central shaft of the rotor.
8. The low noise motor of claim 6, wherein: the periphery of stator core is equipped with the through-hole that is on a parallel with the center pin of rotor circumferentially, stator core, second support and first support three pass through bolted connection, the screw rod of bolt passes the through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122100113.7U CN216904536U (en) | 2021-09-01 | 2021-09-01 | Motor noise reduction mechanism and low-noise motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122100113.7U CN216904536U (en) | 2021-09-01 | 2021-09-01 | Motor noise reduction mechanism and low-noise motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216904536U true CN216904536U (en) | 2022-07-05 |
Family
ID=82178940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122100113.7U Active CN216904536U (en) | 2021-09-01 | 2021-09-01 | Motor noise reduction mechanism and low-noise motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216904536U (en) |
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2021
- 2021-09-01 CN CN202122100113.7U patent/CN216904536U/en active Active
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