CN213990341U

CN213990341U - Motor fixing assembly, air duct assembly and household appliance

Info

Publication number: CN213990341U
Application number: CN202022453607.9U
Authority: CN
Inventors: 胡树锋; 姚新祥; 姚刚; 赵小军; 黄长苏; 刘浩
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-08-17
Anticipated expiration: 2030-10-29

Abstract

The application provides a fixed subassembly of motor, wind channel subassembly and domestic appliance. The motor fixing assembly comprises a first fixing bracket for fixing a motor; the output side frame of the motor shaft is arranged on the first fixed bracket. The output side frame of the motor shaft is arranged on the first fixing support, so that the distance of a cantilever is shortened compared with a traditional motor fixing structure, and the vibration transmission of the motor is effectively weakened.

Description

Motor fixing assembly, air duct assembly and household appliance

Technical Field

The application belongs to the technical field of household appliances, and particularly relates to a motor fixing assembly, an air duct assembly and a household appliance.

Background

Along with the gradual improvement of environmental protection consciousness, the energy efficiency grade of household appliances also gradually improves, and when developing the product of high energy efficiency, the high-efficient direct current motor of indispensable chooseing for use. Through retrieval, most of the existing direct current motors are matched with cross-flow blades or axial flow blades, and are rarely matched with centrifugal blades; because the direct current motor vibrates greatly, the direct current motor is matched with a centrifugal fan blade without a reliable damping structure, so that the motor is influenced by centrifugal force and stressed easily unevenly; particularly, the problem that how to ensure matching of centrifugal fan blades and reliably fix the motor and reduce vibration transmission by horizontally placing a direct current motor becomes urgent to be solved.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing a motor fixing component, wind channel subassembly and domestic appliance, can effectively weaken the vibration transmission of motor.

In order to solve the above problems, the present application provides a motor fixing assembly, including:

the first fixing bracket is used for fixing the motor;

and the output side frame of the motor is arranged on the first fixed bracket.

Optionally, the motor fixing assembly further includes a second fixing bracket for fixing the motor, and the opposite side frame of the output side is disposed on the second fixing bracket.

Optionally, the first fixing bracket comprises a U-shaped plate, and an end of the U-shaped plate is fixed on the second fixing bracket; the output side is arranged on the bottom of the U-shaped plate in a penetrating mode.

Optionally, the end portion of the U-shaped plate includes a fitting surface, and the fitting surface and the second fixing bracket are respectively provided with a corresponding limiting member.

Optionally, the limiting member includes a limiting hole, or a folded edge and a convex hull corresponding to the limiting hole.

Optionally, the motor fixing assembly further includes a vibration damping pad, and the output side is erected on the first fixing bracket through the vibration damping pad, or/and an opposite side of the output side is erected on the second fixing bracket through the vibration damping pad.

Optionally, a mounting hole is formed in the first fixing support or the second fixing support, and the vibration damping pad is arranged in the mounting hole in a penetrating manner in an interference fit manner.

Optionally, the contact surface of the damping pad and the mounting hole wall is provided with sawtooth-shaped protrusions.

According to another aspect of the present application, there is provided an air duct assembly including the motor fixing assembly as described above.

According to another aspect of the present application, there is provided a household appliance comprising the motor fixing assembly as described above or the air duct assembly as described above.

The application provides a subassembly is fixed to motor includes: the first fixing bracket is used for fixing the motor; the output side frame of the motor shaft is arranged on the first fixed bracket. The output side frame of the motor shaft is arranged on the first fixing support, so that the distance of a cantilever is shortened compared with a traditional motor fixing structure, and the vibration transmission of the motor is effectively weakened.

Drawings

FIG. 1 is a schematic view of a motor mounting assembly according to an embodiment of the present application;

FIG. 2 is a schematic view of a prior art motor mounting assembly;

fig. 3 is a schematic structural diagram of a first fixing bracket of the motor fixing assembly according to the embodiment of the present application;

fig. 4 is a schematic structural view of a second fixing bracket of the motor fixing assembly according to the embodiment of the present application;

FIG. 5 is a schematic structural view of a damping pad of the motor fixing assembly according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of another damping pad of the motor mounting assembly according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural view of an air duct assembly according to an embodiment of the present application;

fig. 8 is an exploded view of fig. 7 in accordance with an embodiment of the present application.

The reference numerals are represented as:

1. a motor; 11. a motor shaft; 21. a first fixed bracket; 211. a first mounting hole; 212. a mating surface; 2121. a limiting hole; 22. a second fixed bracket; 221. a second mounting hole; 222. folding edges; 223. a convex hull; 31. a first vibration damping pad; 311. a tooth-shaped structure; 32. a second vibration damping pad; 321. a tooth-shaped structure; 322. limiting teeth; 4. a centrifugal fan blade; 5. motor mount.

Detailed Description

Referring to fig. 1 to 8 in combination, according to an embodiment of the present application, a motor fixing assembly includes:

a first fixing bracket 21 for fixing the motor 1;

the output side of the motor 1 is disposed on the first fixing bracket 21.

As shown in fig. 1 and 2, the output side frame of the motor 1 is set on the first fixed bracket 21 so that a cantilever length L2 from the first fixed bracket 21 to the farthest end of the motor shaft 11; in the conventional motor fixing structure, the motor fixing frame 5 is arranged on the radial side wall of the motor shaft 11, so that the cantilever length of the conventional structure is L1, namely L2< L1; the utility model provides a cantilever length can be shortened relatively to the fixed subassembly of motor to effectively weaken motor 1's vibration transmission, can guarantee the operational reliability of collocation centrifugation fan blade 4.

The output side of the motor 1 may be provided on the first fixing bracket 21 through a housing, or may be erected on the first fixing bracket 21 through a bearing by the motor shaft 11.

In some embodiments, the motor fixing assembly further includes a second fixing bracket 22 for fixing the motor 1, and the opposite side frame of the output side is disposed on the second fixing bracket 22.

And a second fixing bracket 22 is arranged on the opposite side of the output side of the motor 1, so that a better fixing effect is achieved through the two fixing brackets, and the vibration of the motor 1 is weakened.

In some embodiments, the first fixing bracket 21 comprises a U-shaped plate, the end of which is fixed to the second fixing bracket 22; the output side is arranged on the bottom of the U-shaped plate in a penetrating mode.

The first fixing support 21 is of a U-shaped plate structure and is fixedly connected with the second fixing support 22, so that the motor 1 can be conveniently clamped, and the radial and axial double fixing functions are realized; correspondingly, a first mounting hole 211 is formed in the first fixing bracket 21, so that the output side of the motor 1 can extend out conveniently.

In some embodiments, the end of the U-shaped plate includes a mating surface 212, and the mating surface 212 and the second fixing bracket 22 are respectively provided with a corresponding limiting member.

For making things convenient for the U template to be connected fixedly with second fixed bolster 22, be provided with the fitting surface 212 with the tip of U template, conveniently set up limit structure, carry out spacing formula with second fixed bolster 22 and be connected, improve installation rate and efficiency.

In some embodiments, the limiting member includes a limiting hole 2121 or a folded edge 222 and a convex hull 223 corresponding to the limiting hole 2121.

The limiting member is a simple limiting hole 2121 or a structure corresponding to the limiting hole 222 or the convex hull 223, for example, the limiting hole 2121 is provided on the mating surface 212, the flange 222 or the convex hull 223 is provided on the second fixing bracket 22, and the flange 222 or/and the convex hull 223 are inserted into the limiting hole 2121 for limiting.

In some embodiments, the motor fixing assembly further includes a vibration damping pad, and the output side is mounted on the first fixing bracket 21 through the vibration damping pad, or/and the opposite side of the output side is mounted on the second fixing bracket 22 through the vibration damping pad.

The damping pad is arranged at the position where the first fixing support 21 or/and the second fixing support 22 is erected on the motor 1, and the damping pad is used for blocking vibration transmission to reduce the influence on a driven part.

In some embodiments, the first fixing bracket 21 or the second fixing bracket 22 is provided with a mounting hole, and the damping pad is inserted into the mounting hole in an interference fit manner.

The damping pad is assembled on the first fixing support 21 or/and the second fixing support 22 through interference fit, stability is improved, and the power distribution machine 1 is conveniently assembled on the fixing supports.

In some embodiments, the contact surface of the damping pad and the mounting hole wall is provided with sawtooth-shaped protrusions.

The contact surface is provided with the sawtooth-shaped bulges, so that the flexibility of the vibration damping pad is enhanced, and the interference assembly is facilitated.

In the actual assembly structure, in order to prevent the vibration damping pad and the fixed support from rotating, radial openings can be formed in the mounting holes, and limiting teeth 322 are arranged at corresponding positions on the vibration damping pad.

According to another aspect of the present application, there is provided an air duct assembly including the motor 1 fixing assembly as described above.

The air duct assembly adopts the motor fixing assembly, so that the vibration of the motor 1 can be reduced and transmitted to the fan blades, and the service life of the fan blades is prolonged.

The following describes a specific structure of an air duct assembly, which mainly comprises a centrifugal fan blade 4, a first fixing support 21, a first vibration damping pad 31, a direct current motor 1, a second vibration damping pad 32 and a second fixing support 22, wherein the above components are arranged in a casing to form a complete air duct component, and the air duct assembly uses the centrifugal fan blade 4, namely, axial air inlet and radial air outlet.

The first fixing bracket 21 is of an arch structure or a U-shaped structure, and comprises a first mounting hole 211 and more than one matching surface 212; the first vibration damping pad 31 is designed to be a step-shaped structure with a through hole, the small part of the first vibration damping pad is arranged in the first mounting hole 211 in a penetrating mode, the side face, in contact with the wall of the first mounting hole 211, of the first vibration damping pad 31 is provided with a sawtooth-shaped structure 311, the height of the sawtooth shape can be set to be 0.5mm-3mm, the end face, far away from the first mounting hole 211, of the large part of the first vibration damping pad is provided with a groove structure convenient for matching with the motor 1, and the depth of the groove is larger than 0.5 mm.

The second fixing bracket 22 is a straight plate structure, and includes a second mounting hole 221 and at least one position-limiting structure thereon. The first fixing bracket 21 and the second fixing bracket 22 may be provided with one or more lightening holes to ensure strength, to add one or more square or round convex hulls for structural reinforcement, and to save materials. The second vibration damping pad 32 is designed to be a step-shaped structure with a through hole, the small part of the second vibration damping pad is arranged in the second mounting hole 221 in a penetrating mode, a sawtooth-shaped structure 321 is formed on the side face, in contact with the inner wall of the second mounting hole 221, of the second vibration damping pad 32, the height of the sawtooth shape can be set to be 0.5mm-3mm, a groove structure convenient for matching with the motor 1 is arranged on the end face, far away from the second mounting hole 221, of the large part of the second vibration damping pad, and the depth of the groove is larger than 0.5 mm.

The second fixed bracket 22 is fixed in the shell and can also be integrated with the shell; the second vibration damping pad 32 is installed in the second installation hole 221 of the second fixing bracket 22 in a zigzag manner, and is in interference fit with the second fixing bracket 22 to achieve radial positioning, and the large-sized portion is in interference fit with the second fixing bracket 22 to achieve axial positioning.

The motor 1 is mounted between the first and second

vibration damping pads

31 and 32, and the large-sized portions of the two vibration damping pads are in close contact with the motor 1. Similarly, the first vibration damping pad 31 and the first fixing bracket 21 are also in interference fit to realize radial and axial dual positioning.

The first fixing bracket 21 is fixed to the second fixing bracket 22 and is engaged with the two fixing brackets by a limiting structure, which includes but is not limited to a limiting hole 2121, and a folded edge 222 and a convex hull 223 inserted into the limiting hole 2121. In addition, the limiting structure can adopt clearance fit according to different sizes and weights of the motor 1, the clearance is between 0.05mm and 0.5mm, the concentricity of the two fixing supports is guaranteed, and the parallelism of the motor 1 is realized.

This application is placed between two fixed bolsters through 1 main part of motor, and the power transmission of 1 output of motor is to second fixed bolster 22 with the bow font structure of first fixed bolster 21 simultaneously, has reduced the cantilever distance of motor 1 with centrifugal fan blade 4, makes 1 front and back ends of motor all obtain reliable spacing fixedly, guarantees that motor 1 installs reliably.

In addition, the radial and axial double interference fit design of the two fixing supports and the vibration damping pad is combined, so that the front and back support of the motor 1 is more stable, the centrifugal force effect can be effectively eliminated, and the stable operation of the motor 1 is ensured. Finally, the matching flexibility of the motor 1, the vibration damping pad and the fixed support is improved by arranging the groove and the sawtooth-shaped structure on the vibration damping pad, the sawtooth-shaped interference is designed to be 0-4 mm better according to different hardness of the vibration damping pad, the vibration transmission of the motor 1 is weakened, and the noise of the whole machine is reduced.

According to another aspect of the present application, there is provided a household appliance comprising a motor 1 fixing assembly as described above or an air duct assembly as described above.

It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. An electric motor fixing assembly, comprising:

a first fixing bracket (21) for fixing the motor (1);

the output side of the motor (1) is arranged on the first fixed bracket (21);

the motor fixing component further comprises a second fixing support (22) for fixing the motor (1), and the opposite side frame of the output side is arranged on the second fixing support (22).

2. The motor fixing assembly according to claim 1, characterized in that the first fixing bracket (21) comprises a U-shaped plate, the end of which is fixed to the second fixing bracket (22); the output side is arranged on the bottom of the U-shaped plate in a penetrating mode.

3. The motor fixing assembly according to claim 2, wherein the end of the U-shaped plate includes a fitting surface (212), and the fitting surface (212) and the second fixing bracket (22) are respectively provided with a corresponding limiting member.

4. The motor fixing assembly according to claim 3, wherein the limiting member comprises a limiting hole (2121) or a folded edge (222) and a convex hull (223) corresponding to the limiting hole (2121).

5. The motor fixing assembly according to any one of claims 1 to 4, further comprising a vibration damping pad, wherein the output side is mounted on the first fixing bracket (21) via the vibration damping pad, or/and wherein an opposite side of the output side is mounted on the second fixing bracket (22) via the vibration damping pad.

6. The motor fixing assembly according to claim 5, wherein the first fixing bracket (21) or the second fixing bracket (22) is provided with a mounting hole, and the vibration damping pad is arranged in the mounting hole in an interference fit manner.

7. The motor fixing assembly as claimed in claim 6, wherein the vibration-damping pad is provided with saw-toothed protrusions on a contact surface with the wall of the mounting hole.

8. An air duct assembly comprising a motor mount assembly according to any one of claims 1 to 7.

9. An electric household appliance comprising a motor mount assembly according to any one of claims 1 to 7 or an air duct assembly according to claim 8.