CN104840154B - A kind of noise reduction structure of motor applied to dust catcher - Google Patents

Abstract

The invention discloses a kind of noise reduction structure of motor applied to dust catcher, the fixed two or more flexible support connections by motor both sides of its motor installation；The present invention reduces noise using elastic support connection motor and motor cover, the mode of this flexible connection while vibrations are reduced.

Description

A motor noise reduction structure applied to a vacuum cleaner

technical field

The invention relates to a motor noise reduction structure applied to a vacuum cleaner.

Background technique

As the motor power of the vacuum cleaner gradually increases, the noise of the vacuum cleaner also increases. In the prior art, in order to solve the noise problem of the vacuum cleaner motor, various manufacturers usually adopt the following methods:

1. Work hard on the motor itself to obtain low noise output by reducing power consumption while ensuring its working efficiency. However, the cost of this approach is high, and the actual noise reduction effect is not ideal;

2. Improve the air guide channel inside the motor shell, such as improving the shape of the dynamic and static wind guide wheels, or reducing noise by adding structures such as anechoic chambers and air guide pipes. The disadvantage is that the structural design of the motor shell is complicated. The difficulty of model manufacturing increases and the cost increases;

3. Since the low-frequency noise of the vacuum cleaner mainly comes from the vibration of the motor, in order to reduce the vibration of the motor, the motor seal ring and the motor pressure seat are fixed in the industry to fix the motor in the motor cover, but the existing motor and the motor cover are often fixed. It is a rigid connection, the noise reduction effect is still limited, and resonance may occur, and the low noise of the motor cannot be achieved.

Contents of the invention

The purpose of the present invention is to provide a motor noise reduction structure applied to a vacuum cleaner, which supports the motor with an elastic bracket. This flexible connection reduces vibration and noise at the same time.

The technical solution of the present invention is: a motor noise reduction structure applied to a vacuum cleaner, where the motor is installed and fixed by two or more elastic brackets on both sides of the motor.

The elastic bracket is an elastic bracket with supporting function.

A further technical solution of the present invention is: the motor noise reduction structure further includes a motor cover, and the elastic brackets on both sides of the motor are connected and fixed to the motor cover.

For better shock absorption and noise reduction, the lower part of the motor described in the present invention is suspended in the motor cover. Of course, other buffers (such as shock pads, springs, etc.) can also be arranged between the tail of the motor and the motor cover. To achieve the corresponding damping effect. In the present invention, the lower part of the motor is suspended in the motor cover, which can avoid the contact between the lower part of the motor and the motor cover, so that the vibration of the motor is transmitted to the motor cover, which can better reduce noise and reduce production costs. .

Further, a motor bracket for fixing the motor is provided on the peripheral side of the motor, and the elastic bracket is arranged between the motor cover and the motor bracket.

The specific installation structure of the elastic bracket is: the upper edge of the motor cover is respectively provided with positioning grooves relative to the positions of the elastic brackets, the first shock pad is installed in the positioning groove, and the first shock pad has a An installation groove for the outer end of the elastic bracket to be embedded, the motor cover is provided with a motor cover connected and fixed thereto, a second shock absorber is provided between the motor cover and the motor cover, and the second shock absorber The shock pad has a protruding portion corresponding to the mounting groove, and the outer end of the elastic bracket is embedded in the mounting groove, and is pressed and fixed by the protruding portion of the second shock-absorbing pad. The motor bracket includes at least one pair of brackets that are fastened with each other. An elastic bracket is connected between each bracket and the motor cover. The inner end of the elastic bracket fits with the corresponding bracket and is fixed by screw connection.

The elastic bracket is an elastic metal sheet.

The advantages of the present invention are:

1. The invention utilizes an elastic bracket to connect the motor bracket and the motor cover, and the flexible connection mode reduces vibration and reduces noise at the same time.

2. The present invention preferably suspends the lower part of the motor in the motor cover, which can avoid the contact between the lower part of the motor and the motor cover, so that the vibration of the motor is transmitted to the motor cover, which can better reduce noise and reduce production cost.

3. In the present invention, the outer end of the elastic support is embedded in the installation groove of the first shock pad, and is clamped and fixed by the first shock pad and the second shock pad. This installation method reduces the elastic support better. The vibration between the motor cover and the motor cover reduces the noise better.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is the sketch map of the present invention

Fig. 2 is a structural representation of the present invention;

Figure 3 is a partially enlarged view of Figure 1;

Fig. 4 is the assembly drawing of the present invention;

Fig. 5 is a schematic sectional view when the motor cover is not installed in the present invention;

Fig. 6 is a cross-sectional view of the present invention applied to a vacuum cleaner;

Fig. 7 is another sectional view of the present invention applied to a vacuum cleaner.

Among them: 1 motor;

2 motor cover;

3 motor cover; 31 positioning slot;

4 motor brackets; 41 brackets;

5 elastic brackets;

6. The first damping pad; 61. Mounting groove;

7 second shock absorbing pad; 71 protruding part;

8 screws.

Detailed ways

Embodiment: As shown in Figures 1 to 7, a motor noise reduction structure applied to a vacuum cleaner includes a motor 1 and a motor cover 3, and a motor bracket 4 for fixing the motor 1 is provided on the peripheral side of the motor 1. The motor support 4 and the motor cover 3 are connected and fixed through two or more elastic supports 5 with supporting functions. In this embodiment, there are two elastic brackets 5, which are correspondingly arranged on both sides of the motor bracket 4, and the elastic brackets 5 are elastic metal sheets.

For better shock absorption and noise reduction, the lower part of the motor 1 in the present invention is suspended in the motor cover 3, and of course other buffers (such as shock pads) can be arranged between the tail of the motor 1 and the motor cover 3 , springs, etc.), to achieve the corresponding damping effect. In this embodiment, the lower part of the preferred motor 1 is suspended in the motor cover, so that the contact between the lower part of the motor 1 and the motor cover 3 can be avoided, so that the vibration of the motor 1 is transmitted to the motor cover 3, and the noise can be better reduced. At the same time, the production cost can also be reduced.

As shown in Figure 4, the specific installation structure of the elastic bracket 5 is: the upper edge of the motor cover 3 is respectively provided with positioning grooves 31 relative to the positions of the elastic brackets 5, and the first shock absorber is installed in the positioning grooves 31. Pad 6, the first shock pad 6 has a mounting groove 61 for the outer end of the elastic bracket 5 to be embedded, and the motor cover 3 is provided with a motor cover 2 connected and fixed thereto, and the motor cover 2 A second shock absorber 7 is provided between the motor cover 3, and the second shock absorber 7 has a protrusion 71 corresponding to the installation groove 61, and the outer end of the elastic bracket 5 is embedded in the installation groove 61, And it is compressed and fixed by the protruding portion 71 of the second shock absorbing pad 7 . The motor bracket 4 includes at least a pair of brackets 41 that are fastened together, and an elastic bracket 5 is connected between each bracket 41 and the motor cover 3, and the inner end of the elastic bracket 5 is attached to the corresponding bracket 41. The combination is fixed by screw 8 connection. This installation method better reduces the vibration between the elastic support 5 and the motor cover 3 and the motor cover 2, and reduces the noise better.

Wherein the elastic bracket 5 is at least partly accommodated by the motor cover 3, its outer end and inner end intersect at right angles, and there is a gradual transition arc, and the outer end of the elastic bracket 5 is arranged on the first shock absorber 6 and the second shock absorber Between the pads 7, away from the direction of the motor center, and the outer end is provided with two support points, while the inner end is provided with a single fixed point, and is close to the direction of the motor center. The upper surface of the first shock absorbing pad 6 is substantially flush with the upper surface of the motor cover 3 . The centerline of the motor 1 is perpendicular to the horizontal plane, and the head of the motor 1 is positioned above the tail. The positioning groove 31 is provided with a positioning post, and the first shock absorbing pad 6 is provided with a positioning hole allowing the positioning post to pass through, and the sides of the two supporting points at the outer end are at least partly in contact with the protrusions of the first shock absorbing pad 6 . The first shock pad 6 is block-shaped, while the second shock pad 7 is closed-loop.

The present invention utilizes the elastic support 5 to connect the motor support 4 and the motor cover 3, while ensuring that the lower part of the motor 1 is suspended in the air, and a corresponding first shock absorber 6 is set between the outer end of the elastic support 5 and the motor cover 3 and the motor cover 2 And the second shock pad 7, the above-mentioned multiple shock-absorbing structure reduces the vibration, greatly reduces the motor noise, and realizes the low noise of the vacuum cleaner.

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. In addition to the above-mentioned embodiments, the present invention can also have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims (5)

1. A motor noise reduction structure applied to a vacuum cleaner, characterized in that: the motor (1) is installed and fixed by two or more elastic brackets on both sides of the motor (1), and the elastic brackets It is an elastic bracket (5) with a supporting function; the elastic bracket (5) is installed on the first shock pad (6), and the motor noise reduction structure also includes a motor cover (3), and the motor (1) has two The elastic support (5) on the side is connected and fixed with the motor cover (3), and the positions of the upper edges of the motor cover (3) relative to each elastic support (5) are respectively provided with positioning grooves (31), and the positioning grooves (31) is installed with a first shock pad (6), which has a mounting groove (61) for the outer end of the elastic bracket (5) to be embedded in, and the motor cover (3) is provided with the motor outer cover (2) that is connected with it fixedly, is provided with the second shock pad (7) between described motor outer cover (2) and motor cover (3), and described second shock pad (7) There is a protruding portion (71) corresponding to the mounting groove (61), the outer end of the elastic bracket (5) is embedded in the mounting groove (61), and the protrusion of the second shock pad (7) part (71) is compressed and fixed; the elastic bracket (5) is at least partly accommodated by the motor cover (3), and its outer and inner ends intersect at right angles, and there is a gradual transition arc, and the outer end of the elastic bracket (5) It is arranged between the first shock pad (6) and the second shock pad (7), and the outer end is provided with two supporting points; the upper surface of the first shock pad (6) and the motor cover (3) The upper surface is substantially flush, the positioning groove (31) is provided with a positioning column, and the first shock pad (6) is provided with a positioning hole allowing the positioning column to pass through, and the sides of the two supporting points at the outer end of the elastic bracket (5) are at least Part of it is in contact with the protrusion of the first shock absorbing pad (6); the first shock absorbing pad (6) is in block shape, while the second shock absorbing pad (7) is in a closed loop shape. 2. A motor noise reduction structure applied to a vacuum cleaner according to claim 1, characterized in that: the lower part of the motor (1) is suspended in the motor cover (3). 3. A motor noise reduction structure applied to a vacuum cleaner according to claim 1, characterized in that: a motor bracket (4) for fixing the motor is provided on the peripheral side of the motor (1), and the elastic bracket (5 ) is arranged between the motor cover (3) and the motor support (4). 4. A motor noise reduction structure applied to a vacuum cleaner according to claim 3, characterized in that: the motor bracket (4) includes at least a pair of brackets (41) that are interlocked with each other, and each bracket ( 41) and the motor cover (3) are connected with an elastic bracket (5), and the inner end of the elastic bracket (5) fits with the corresponding bracket (41) and is connected and fixed by screws (8). 5. A motor noise reduction structure applied to a vacuum cleaner according to claim 1, 2, 3 or 4, characterized in that the elastic support (5) is an elastic metal sheet.