CN219509896U

CN219509896U - Fixing device that makes an uproar falls in motor stability

Info

Publication number: CN219509896U
Application number: CN202222959109.0U
Authority: CN
Inventors: 唐芳义
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-08-11
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a motor stable noise reduction fixing device, which comprises a volute component and a motor component arranged on the inner side of the volute component, wherein two opposite volute air inlets and fixing frames arranged corresponding to the volute air inlets are arranged on two sides of the volute component, the motor component comprises a stator component and a rotor component rotatably arranged on the outer side of the stator component, and the two fixing frames are used for respectively erecting two axial ends of the stator component; according to the utility model, the two axial ends of the motor component are fixed through the fixing frames at the two sides of the volute component, different from the mode of single-end fixing, the other end rotates around the single-end rotation, and the two axial ends of the motor component are mutually restricted, so that the swing amplitude of the motor component is reduced in operation, the stability of the motor component is improved, the noise generated by the motor is reduced, and the problems of low stability and high noise of the traditional motor fixing device are solved.

Description

Fixing device that makes an uproar falls in motor stability

[ field of technology ]

The utility model relates to the technical field of smoke exhaust ventilator, in particular to a fixing device for stabilizing and reducing noise of a motor.

[ background Art ]

The traditional motor fixing device adopts a mode that a motor shaft is fixed by a single end in the application process, the other end takes the fixed single end as a rotation center, and the motor shaft rotates around the rotation center continuously, but the stability between the single end and a motor accessory connected with the single end in the mode is low, the swing amplitude of the motor shaft is overlarge, and the generated noise is also increased, so that the motor fixing device with stable noise reduction is needed urgently at present.

For example, publication No. CN110374927B, publication No. 2021.01.12 discloses a fan, and fig. 1 of the publication shows that a motor shaft of the fan is fixed to a volute component at one end, a pretension member for fixing a wind wheel disposed in the middle of the motor shaft is sleeved at the other end, the one end connected to the volute component is taken as a rotation center, the other end continuously rotates around the rotation center due to rotation of the wind wheel, although the rotation is not obvious, noise is generated, especially when the wind wheel lifts up at a rotating speed, the noise generated is larger, and stability between the motor shaft and the pretension member connected with the motor shaft or the volute component is lower.

[ utility model ]

The utility model discloses a fixing device for stabilizing and reducing noise of a motor, which adopts a single-end fixing mode to fix a fixing device between a volute component and a motor shaft of a traditional motor so as to solve the problems of low stability and noise generation between the volute component and a wind wheel.

In order to solve the problems, the utility model provides the following scheme:

the motor stable noise reduction fixing device comprises a volute component and a motor component arranged on the inner side of the volute component, wherein two opposite volute air inlets and fixing frames which are arranged corresponding to the volute air inlets are arranged on two sides of the volute component, the motor component comprises a stator component and a rotor component which is rotatably arranged on the outer side of the stator component, and the two fixing frames are used for respectively erecting two axial ends of the stator component;

the fixing frame comprises three connecting brackets which are connected with each other, one end of each connecting bracket is connected with the volute component, and the other end of each connecting bracket is connected with two adjacent connecting brackets.

According to the fixing device for stable noise reduction of the motor, the damping flexible blocks used for noise reduction are arranged between the two axial ends of the stator assembly and the corresponding fixing frames, the arc plates are arranged at one ends of the connecting support, far away from the volute assembly, and the three arc plates are connected end to form the fixing through holes sleeved with the damping flexible blocks.

According to the fixing device for stably reducing noise of the motor, one side, away from the motor assembly, of the arc plate is provided with the positioning concave portion which is sunken towards the side of the fixing through hole, and the circumferential direction of the damping flexible block is provided with the positioning groove which is arranged corresponding to the positioning concave portion.

The fixing device for stable noise reduction of the motor is characterized in that the fixing rods are arranged at the two axial ends of the stator assembly in an extending mode, the rotor assembly is sleeved with the fixing rods, and the two axial ends of the fixing rods are respectively erected on the two fixing frames.

According to the fixing device for stably reducing noise of the motor, the connecting shaft sleeve which is clamped with the damping flexible block is sleeved on the fixing rod.

The fixing device for stably reducing noise of the motor comprises the connecting shaft sleeve, wherein the connecting shaft sleeve comprises three clamping keys which are mutually angled, the middle part of the damping flexible block is provided with the clamping holes, and each clamping hole comprises a clamping groove which is respectively embedded with each clamping key in a matched mode.

According to the fixing device for stably reducing noise of the motor, the rotor assembly comprises the cylindrical shell sleeved on the fixing rod, and the cylindrical shell rotates on the fixing rod through the two bearings.

According to the fixing device for stabilizing and reducing noise of the motor, the inner side of the volute component is provided with the wind wheel, and the wind wheel is circumferentially provided with the plurality of blades.

The fixing device for stably reducing noise of the motor comprises the wind wheel and a connecting turntable connected with the cylindrical shell.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the two axial ends of the motor component are fixed through the fixing frames at the two sides of the volute component, and compared with the fixing mode of single-end fixing, the fixing mode of the two ends is used for limiting the two axial ends of the motor component to each other, so that the amplitude of shaking of the motor component during operation is reduced, the stability is improved, the noise generated by the motor is reduced, and the problems of low stability and high noise of the fixing mode for connecting a wind wheel in the traditional range hood are solved.

2. Meanwhile, the damping flexible block is arranged between the fixing frame and the motor component, so that energy generated by the motor component during running shaking can be absorbed, flexible connection between the motor component and the volute component is realized, vibration and noise generated by instability between the motor component and the volute component are reduced, and the problems that a fixing mode for connecting a wind wheel in a traditional range hood is low in stability and high in noise are solved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.

Fig. 1 is a perspective view of the entire structure in the present embodiment;

FIG. 2 is an exploded view of the present device in its entirety along the axial direction of the rotor in this embodiment;

FIG. 3 is a perspective view of the present embodiment with the volute assembly and wind wheel hidden;

FIG. 4 is an exploded view of the present embodiment taken along the axial direction of the securing lever based on the overall structure of FIG. 3;

fig. 5 is a sectional view of the motor assembly in the present embodiment;

FIG. 6 is a right side view of the overall structure of FIG. 1 in this embodiment;

FIG. 7 is a cross-sectional view taken along the A-A direction of FIG. 6 in the present embodiment;

FIG. 8 is a bottom view of the overall structure of FIG. 1 in this embodiment;

fig. 9 is a sectional view of the present embodiment taken along the direction B-B of fig. 8.

[ detailed description ] of the utility model

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

When embodiments of the present utility model refer to the ordinal terms "first," "second," etc., it is to be understood that they are merely used for distinguishing between them unless the order of their presentation is indeed dependent on the context. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-9, a fixing device for stabilizing and reducing noise of a motor comprises a volute component 1 and a motor component 5 arranged on the inner side of the volute component 1, wherein two opposite volute air inlets 11 and fixing frames 6 arranged corresponding to the volute air inlets 11 are arranged on two sides of the volute component 1, the motor component 5 comprises a stator component 51 and a rotor component 52 rotatably arranged on the outer side of the stator component 51, and the two fixing frames 6 are used for respectively erecting two axial ends of the stator component 51;

the fixing frame 6 comprises three connecting brackets 61 connected with each other, one end of each connecting bracket 61 is connected with the volute component 1, and the other end is connected with two adjacent connecting brackets 61.

In the embodiment, the axial two ends of the motor component are fixed through the fixing frames at the two sides of the volute component, and compared with the fixing mode of single-end fixing, the fixing mode of the two ends is used for limiting the two axial ends of the motor component to each other, so that the shaking amplitude of the motor component is reduced during operation, the stability is improved, the noise generated by the motor is reduced, and the problems of low stability and high noise of the fixing mode for connecting a wind wheel in the traditional smoke exhaust ventilator are solved.

In this embodiment, the angle between each two adjacent connecting brackets 61 is 120 °, so that the connection relationship between the fixing frame 6 and the volute component 1 is more stable.

Further, a damping flexible block 7 for noise reduction is disposed between the two axial ends of the stator assembly 51 and the corresponding fixing frame 6, an arc plate 611 is disposed at one end of the connecting bracket 61 away from the volute assembly 1, and the three arc plates 611 are connected end to form a fixing through hole 612 sleeved with the damping flexible block 7.

In this embodiment, the two axial ends of the fixing rod 511 are erected on the two fixing frames 6, and the fixing through holes 612 make the connection between the fixing frames 6 and the damping flexible blocks 7 more stable.

Furthermore, the vibration-reducing flexible block is arranged between the fixing frame and the motor component, and the vibration amplitude and the generated noise are large only by the rigid collision between the fixing frame and the motor component, but because the vibration-reducing flexible block is made of flexible materials, the energy generated by the motor component during operation and swing can be absorbed, the flexible connection between the motor component and the volute component is realized, the vibration and the noise generated by instability between the motor component and the volute component are reduced, and the problems of low stability and high noise of a fixing mode for connecting a wind wheel in the traditional range hood are solved.

Still further, the motor assembly 5 includes a stator assembly 51 and a rotor assembly 52 rotatably disposed on the stator assembly 51, the stator assembly 51 includes a fixing rod 511 rotatably disposed with the rotor assembly 52, two axial ends of the fixing rod 511 are mounted on the two fixing frames 6, when the rotor assembly 52 rotates, the fixing rod 511 is affected by the rotor assembly 52 to shake therewith, and the damping flexible block 7 made of flexible material has a good damping effect on reducing the shake amplitude of the fixing rod.

Further, a positioning recess 613 recessed toward the fixing hole 612 is provided on the side of the circular arc plate 611 away from the motor assembly 5, and a positioning groove 71 provided corresponding to the positioning recess 613 is provided on the circumferential direction of the damper flexible block 7.

In this embodiment, the positioning recess 613 and the positioning groove 71 are cooperatively installed to position the fixing rod 511, so as to prevent the fixing rod 511 from falling out of the fixing hole 612, because the fixing rod 511 is also affected by the shaking generated when the rotor assembly 52 rotates, so that the fixing rod 511 is easy to fall out.

Further, fixing rods 511 are extended from two axial ends of the stator assembly 51, the rotor assembly 52 is sleeved with the fixing rods 511, and two axial ends of the fixing rods 511 are respectively erected on the two fixing frames 6.

Further, the fixing rod 511 is sleeved with a connecting shaft sleeve 8 which is clamped with the damping flexible block 7.

In this embodiment, the connecting sleeve 8 can make the connection between the shock absorbing flexible block 7 and the fixing lever 511 more stable.

Further, the connecting sleeve 8 includes three clamping keys 80 at a certain angle, the middle of the shock absorbing flexible block 7 is provided with a clamping hole 72, and the clamping hole 72 includes a clamping groove 73 respectively embedded with each clamping key 80.

In this embodiment, a connection through hole for connecting the fixing rod 511 is provided on a surface of the connection shaft sleeve 8 away from the shock absorbing flexible block 7, and an angle between every two adjacent clamping keys 80 is 120 °, so that the fixing rod can be more effectively connected with the shock absorbing flexible block 7 by matching with the clamping groove 73.

Further, the rotor assembly 52 comprises a cylindrical housing 521 which is fitted over the fixing rod 511, the cylindrical housing 521 being rotated on the fixing rod 511 by being provided with two bearings 53.

In the present embodiment, the bearing 53 is divided into an inner ring, an outer ring, and balls provided therebetween, the inner ring is connected to the fixing lever 511 in the stator assembly 51, the outer ring is connected to the cylindrical housing 521 in the rotor assembly 52, and the balls are provided so that the cylindrical housing 521 can rotate with respect to the fixing lever 5111.

Further, a wind wheel 2 is arranged on the inner side of the volute component 1, and a plurality of blades 21 are circumferentially arranged on the wind wheel 2.

Further, the rotor 2 comprises a connection turntable 22 connected to a cylindrical housing 521.

In this embodiment, the wind wheel 2 is circumferentially provided with a plurality of blades 21 curved along the same angle, so that the blades 21 have good pressure surface and suction surface, noise caused by flow separation generated by fluid in the air duct is effectively avoided, and contradictory relation among air quantity, static pressure and noise is reasonably solved.

In this embodiment, the gap formed between the peripheral side of the wind wheel 2 and the inner side of the volute component 1 is the suction air duct 3, and the cylindrical housing 521 rotates to drive the connection turntable 22 to rotate, so as to drive the plurality of blades 21 to rotate along the expansion direction of the suction air duct 3.

The working principle of the utility model is as follows:

according to the utility model, the two axial ends of the motor component are fixed through the fixing frames at the two sides of the volute component, and compared with the fixing mode of single-end fixing, the fixing mode of the two ends is used for limiting the two axial ends of the motor component to each other, so that the amplitude of shaking of the motor component during operation is reduced, the stability is improved, the noise generated by the motor is reduced, and the problems of low stability and high noise of the fixing mode for connecting a wind wheel in the traditional range hood are solved; meanwhile, the vibration-damping flexible block is arranged between the fixing frame and the motor component, and the vibration amplitude and the generated noise are large only by the rigid collision between the fixing frame and the motor component, but the vibration-damping flexible block is made of flexible materials and can absorb the energy generated by the motor component when the motor component swings in operation, so that the flexible connection between the motor component and the volute component is realized, and the vibration and the noise generated by instability between the motor component and the volute component are reduced; both have solved the fixed mode stationarity that is used for connecting the wind wheel in traditional smoke ventilator and have low and the big problem of noise.

The above description of one embodiment provided in connection with the specific content does not set forth a limitation on the practice of the utility model. The method, structure, etc. similar to or identical to those of the present utility model, or some technical deductions or substitutions are made on the premise of the inventive concept, should be regarded as the protection scope of the present utility model.

Claims

1. The motor stable noise reduction fixing device is characterized by comprising a volute component (1) and a motor component (5) arranged on the inner side of the volute component (1), wherein two opposite volute air inlets (11) and fixing frames (6) corresponding to the volute air inlets (11) are arranged on two sides of the volute component (1), the motor component (5) comprises a stator component (51) and a rotor component (52) rotatably arranged on the outer side of the stator component (51), and the two fixing frames (6) are used for respectively erecting two axial ends of the stator component (51);

the fixing frame (6) comprises three connecting brackets (61) which are connected with each other, one end of each connecting bracket (61) is connected with the volute component (1), and the other end of each connecting bracket is connected with the adjacent two other connecting brackets (61);

damping flexible blocks (7) for noise reduction are arranged between the two axial ends of the stator assembly (51) and the corresponding fixing frames (6), an arc plate (611) is arranged at one end of the connecting support (61) far away from the volute assembly (1), and the three arc plates (611) are connected end to form a fixing through hole (612) sleeved with the damping flexible blocks (7);

the arc plate (611) is far away from one side of the motor assembly (5) and is provided with a positioning concave part (613) which is sunken towards the side of the fixed through hole (612), and the shock absorption flexible block (7) is circumferentially provided with a positioning groove (71) which is arranged corresponding to the positioning concave part (613).

2. The motor stabilizing and noise reducing fixing device according to claim 1, wherein fixing rods (511) are arranged at two axial ends of the stator assembly (51) in an extending mode, the rotor assembly (52) is sleeved with the fixing rods (511), and two axial ends of the fixing rods (511) are respectively erected on the two fixing frames (6).

3. The motor stabilizing and noise reducing fixing device according to claim 2, wherein the fixing rod (511) is sleeved with a connecting shaft sleeve (8) which is clamped with the damping flexible block (7).

4. A motor stabilizing and noise reducing fixing device according to claim 3, wherein the connecting shaft sleeve (8) comprises three clamping keys (80) which are mutually angled, the middle part of the damping flexible block (7) is provided with a clamping hole (72), and the clamping hole (72) comprises clamping grooves (73) which are respectively embedded with each clamping key (80) in a matching way.

5. A stationary noise reducing fixture for an electric motor according to claim 2, characterized in that the rotor assembly (52) comprises a cylindrical housing (521) which is fitted over the stationary rod (511), the cylindrical housing (521) being rotated on the stationary rod (511) by means of two bearings (53).

6. The motor stabilizing and noise reducing fixing device according to claim 5, wherein a wind wheel (2) is arranged on the inner side of the volute assembly (1), and a plurality of blades (21) are circumferentially arranged on the wind wheel (2).

7. A stationary noise reducing fixture for an electric motor according to claim 6, characterized in that the wind wheel (2) comprises a connection turntable (22) connected to a cylindrical housing (521).