Front and rear shell connection noise reduction structure of portable dust collector

Abstract

The utility model belongs to the field of dust collectors, particularly relates to a noise reduction structure for connection of a front shell and a rear shell of a portable dust collector, and aims to solve the problems that an existing dust collector shell is relatively simple in structure, relatively low in noise reduction effect and not convenient for people to use, the following scheme is provided: the noise reduction structure comprises a front shell, and a rear shell is fixedly arranged on one side of the front shell; a first inner cavity and a second inner cavity which are communicated with each other are arranged in the rear shell, a plurality of guide ribs which are annularly distributed are arranged on the inner wall of the first inner cavity, air outlets are formed in two sides of the second inner cavity, two pieces of filter cotton are arranged on the inner wall of the second inner cavity, and the two pieces of filter cotton are respectively positioned on one sides of the two air outlets. According to the invention, air exhausted during operation of the motor can be guided and buffered, noise of the motor is effectively suppressed, the noise cannot be directly diffused outwards, the elasticity of the fixing ring can be increased, the fixing ring can be conveniently installed, abrasion to the motor can be reduced, and protection is provided for the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, in particular to a noise reduction structure for connecting front and rear shells of a portable vacuum cleaner. Background Art

[0002] Vacuum cleaners can be divided into vertical, horizontal and portable types according to their structure. The working principle of a vacuum cleaner is to use an electric motor to drive the blades to rotate at high speed, generate negative air pressure in a sealed shell, absorb dust, and the air mixed with dust is filtered and discharged to the outside through the exhaust port. However, existing portable vacuum cleaners have the following shortcomings when used:

[0003] 1. The existing vacuum cleaner shell structure is relatively simple, the noise reduction effect is low, and it is not conducive to people's use.

[0004] Therefore, we propose a noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art that the vacuum cleaner shell structure is relatively simple, the noise reduction effect is relatively low, and it is not conducive to people's use, and proposes a noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A noise reduction structure for connecting front and rear shells of a portable vacuum cleaner, comprising:

[0008] A front shell, one side of which is fixedly provided with a rear shell, a first inner cavity and a second inner cavity which are connected are provided in the rear shell, a plurality of guide ribs distributed in an annular shape are provided on the inner wall of the first inner cavity, exhaust ports are provided on both sides of the second inner cavity, two filter cottons are provided on the inner wall of the second inner cavity, and the two filter cottons are respectively located on one side of the two exhaust ports;

[0009] A motor, wherein the motor is disposed between the first inner cavity and the second inner cavity;

[0010] A fixing ring is threadedly connected in the first inner cavity, a limiting groove is provided on one side of the fixing ring, the limiting groove is adapted to the motor, a through hole and a vent are provided on the inner wall of the limiting groove, and the output shaft of the motor passes through the through hole.

[0011] In a possible design, a positioning block is fixedly provided at one end of the motor, and a positioning frame is integrally formed on an inner wall of one side of the second inner cavity, and the positioning block and the positioning frame cooperate with each other.

[0012] In a possible design, a soft pad is bonded to the inner wall of the limiting groove, and the motor and the soft pad are in contact with each other.

[0013] In a possible design, an annular groove is formed on one side of the fixing ring, and the limiting groove is located on the inner side of the annular groove.

[0014] In a possible design, the first inner cavity and the second inner cavity are both cylindrical, and the radius of the first inner cavity is larger than that of the second inner cavity.

[0015] In a possible design, a U-shaped handle is integrally formed on an outer wall of one side of the rear shell.

[0016] In the present application, when in use, the motor output shaft drives the blades to rotate at high speed, and the generated wind enters the first inner cavity from the vent. Under the guidance of the guide ribs, the wind rotates toward the center and enters the second inner cavity, and then is discharged to the outside from the exhaust port after being buffered by the filter cotton.

[0017] Beneficial effects:

[0018] In the utility model, the front and rear shells of the portable vacuum cleaner are connected to a noise reduction structure. Through the arrangement of multiple structures such as guide ribs, a first inner cavity and a second inner cavity, the wind exhausted by the operation of the motor rotates in the first inner cavity under the guidance of the guide ribs, then enters the second inner cavity, and finally is buffered by the filter cotton and discharged from the exhaust port, thereby effectively suppressing the noise of the motor and preventing it from directly spreading to the outside;

[0019] In the utility model, the noise reduction structure for connecting the front and rear shells of the portable vacuum cleaner can increase the elasticity of the fixing ring through the provision of the annular groove, making it easier to install the fixing ring;

[0020] In the utility model, the noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner can avoid direct contact and friction between the motor and the fixing ring through the provision of a soft pad, thereby reducing wear caused by friction and providing protection for the motor.

[0021] In the utility model, the wind exhausted by the operation of the motor can be guided and buffered, which effectively suppresses the noise of the motor and prevents it from directly spreading to the outside. The elasticity of the fixing ring can be increased, the installation of the fixing ring can be facilitated, the wear on the motor can be reduced, and protection for the motor can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view structural diagram of a noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner proposed by the utility model;

[0023] Figure 2 A schematic diagram of the internal top view of the rear shell of a portable vacuum cleaner with a noise reduction structure connected to the front and rear shells of the utility model;

[0024] Figure 3 The utility model is a side view structural schematic diagram of a noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner.

[0025] In the figure: 1. front shell; 2. rear shell; 3. exhaust port; 4. handle; 5. first inner cavity; 6. second inner cavity; 7. guide rib; 8. filter cotton; 9. motor; 10. fixing ring; 11. limiting groove; 12. soft pad; 13. annular groove; 14. positioning frame; 15. positioning block; 16. through hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Example 1

[0028] Reference Figure 1-Figure 3 A noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner, which is used in the field of vacuum cleaners, comprises a front shell 1 and a rear shell 2, the rear shell 2 is fixedly provided on one side of the front shell 1, a first inner cavity 5 and a second inner cavity 6 are provided in the rear shell 2, a plurality of guide ribs 7 distributed in an annular shape are provided on the inner wall of the first inner cavity 5, and the wind can be guided by the plurality of guide ribs 7 distributed in an annular shape so that the wind rotates toward the center, exhaust ports 3 are provided on both sides of the second inner cavity 6, two filter cottons 8 are provided on the inner wall of the second inner cavity 6, and the two filter cottons 8 are respectively located on one side of the two exhaust ports 3, and the arrangement of the filter cotton 8 can buffer the wind;

[0029] A motor 9, wherein the motor 9 is disposed between the first inner cavity 5 and the second inner cavity 6;

[0030] A fixing ring 10 is threadedly connected in the first inner cavity 5. A limiting groove 11 is provided on one side of the fixing ring 10. The limiting groove 11 is adapted to the motor 9. A through hole 16 and a vent are provided on the inner wall of the limiting groove 11. The output shaft of the motor 9 passes through the through hole 16. One end of the output shaft of the motor 9 extends to the outside of the first inner cavity 5 and is fixed with blades. The blades are driven to rotate by the motor 9, so that the outside air can be sucked into the vacuum cleaner and discharged from the vacuum cleaner through the exhaust port 3.

[0031] Example 2

[0032] Improved on the basis of Example 1:

[0033] A positioning block 15 is fixedly provided at one end of the motor 9, and a positioning frame 14 is integrally formed on the inner wall of one side of the second inner cavity 6. The positioning block 15 and the positioning frame 14 cooperate with each other, and the motor 9 can be positioned by the cooperation of the positioning block 15 and the positioning frame 14 to prevent the motor 9 from shaking;

[0034] The inner wall of the limiting groove 11 is bonded with a soft pad 12, and the motor 9 is in contact with the soft pad 12. The arrangement of the soft pad 12 can reduce the friction between the motor 9 and the inner wall of the limiting groove 11, thereby reducing the wear on the motor 9;

[0035] An annular groove 13 is provided on one side of the fixing ring 10, and the limiting groove 11 is located inside the annular groove 13. The setting of the annular groove 13 can increase the elasticity of the fixing ring 10, making it easier for people to install the fixing ring 10;

[0036] The first inner cavity 5 and the second inner cavity 6 are both cylindrical, and the radius of the first inner cavity 5 is larger than that of the second inner cavity 6;

[0037] A U-shaped handle 4 is integrally formed on one side outer wall of the rear shell 2 , and the arrangement of the handle 4 makes it convenient for a worker to move the vacuum cleaner.

[0038] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 9 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner, characterized in that: include: A front shell (1), a rear shell (2) is fixedly arranged on one side of the front shell (1), a first inner cavity (5) and a second inner cavity (6) are arranged in the rear shell (2), a plurality of guide ribs (7) distributed in an annular shape are arranged on the inner wall of the first inner cavity (5), exhaust ports (3) are arranged on both sides of the second inner cavity (6), two filter cottons (8) are arranged on the inner wall of the second inner cavity (6), and the two filter cottons (8) are respectively located on one side of the two exhaust ports (3); A motor (9), wherein the motor (9) is arranged between the first inner cavity (5) and the second inner cavity (6); A fixing ring (10) is threadedly connected in the first inner cavity (5); a limiting groove (11) is provided on one side of the fixing ring (10); the limiting groove (11) is adapted to the motor (9); a through hole (16) and a vent are provided on the inner wall of the limiting groove (11); and an output shaft of the motor (9) passes through the through hole (16).

2. A noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner according to claim 1, characterized in that: A positioning block (15) is fixedly provided at one end of the motor (9), and a positioning frame (14) is integrally formed on an inner wall of one side of the second inner cavity (6), and the positioning block (15) and the positioning frame (14) cooperate with each other.

3. A noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner according to claim 2, characterized in that: A soft pad (12) is bonded to the inner wall of the limiting groove (11), and the motor (9) and the soft pad (12) are in contact with each other.

4. A noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner according to claim 3, characterized in that: An annular groove (13) is provided on one side of the fixing ring (10), and the limiting groove (11) is located inside the annular groove (13).

5. A noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner according to claim 4, characterized in that: The first inner cavity (5) and the second inner cavity (6) are both cylindrical, and the radius of the first inner cavity (5) is greater than that of the second inner cavity (6).

6. A noise reduction structure for connecting the front and rear shells of a portable vacuum cleaner according to claim 5, characterized in that: A U-shaped handle (4) is integrally formed on one side outer wall of the rear housing (2).

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