JPH0584195A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To reduce vibration and noise by locating the center of a fan motor at the center of a polygonal supporter wherein opposite ends of a plurality of linear or planar springs are coupled with fixing members and bringing the polygonal supporter into contact with a rib of a body case. CONSTITUTION:A polygonal supporter 30 (quadrangle in the figure) comprises a plurality of linear or planar springs 31 and fixing members 36 attached to the opposite ends of the spring 31. The springs 31 are caused to abut the outer periphery of a motor portion 7 of a fan motor 1 so that the center of the fan motor 1 is positioned near the center of the supporter 30. Further, the supporter 30 is supported by a rib 41 of a body case 10. A polygonal supporter 34 having construction similar to the supporter 30 supports the rear of the housing of the motor portion 7 and the supporter 34 is supported by a rib 40 of the case 10. As a result, the fan motor is resiliently supported on the body case so as to isolate vibration, thereby reducing vibration and noise.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a domestic vacuum cleaner.

[0002]

2. Description of the Related Art A conventional vacuum cleaner will be described with reference to FIG. In the figure, 1 is a fan motor for sucking air, which is composed of a motor 7, a fan (not shown) rotated by the motor 7, and a fan case 4 for covering the fan. The fan case 4 has intake holes 2 and the motor 7 has exhaust air. It has a hole 3. In this fan motor 1, the outer peripheral portion 5 of the fan case 4 is provided with the vibration-proof rubber 6, and the housing portion 8 of the motor bearing is used.
Are elastically supported on the main body 10 by vibration-proof rubbers 9, respectively, and the main body 10 is vibration-insulated from the fan motor 1. As shown in FIG. 10, the antivibration rubber front 6 has a substantially cylindrical shape, and its front end portion 11 is in close contact with the partition plate 12 of the main body 10 so that the exhaust gas from the exhaust hole 3 flows back to the intake hole 2. It also plays the role of a seal to prevent this. Reference numeral 13 is a paper bag type dust collecting filter, which is detachably attached to the dust collecting portion 14 at the front part of the main body 10 and can be easily taken out by opening the front lid 15 of the main body 10. Reference numeral 16 denotes a dust collecting hose, which has a floor nozzle 17 attached to one end thereof and the front lid 1 at the other end thereof.
It is inserted into the filter 13 through the reference numeral 5. 18 indicates cordrill.

Next, the dust collecting action will be described. When the fan motor 1 is driven, air containing dust is sucked from the floor nozzle 17. This air passes through the dust collecting hose 1,
The air is sent to the inside of the paper bag type filter 13 and separated into dust and air, the dust remains inside the paper bag type filter 13, and the air is taken in through the air vents 19 of the partition plate 12 of the main body 10 of the fan motor 1. It flows into the hole 2, cools the motor 7, and is exhausted from the exhaust hole 3. The air exhausted from the fan motor 1 passes through an air passage 21 inside the main body 10 as shown by an arrow 20, and is exhausted outside the main body exhaust hole 22. The dust collected in this way is fed to the paper bag filter 13 one after another.
Accumulated inside. When the paper bag type filter 13 is filled with dust, the front lid 15 of the main body 10 is opened, the paper bag type filter 13 is taken out and discarded, and a new filter 13 is attached, so that dust can be treated without soiling the hands. Reference numeral 23 indicates a filter base for increasing the dust collection efficiency.

One of the problems with the conventional vacuum cleaner described above is noise. That is, the vibration due to the unbalanced rotation of the fan motor 1 is transmitted to the main body 10, and unpleasant noise is generated. The condition of the vibration isolation structure for isolating the vibration of the fan motor is that it must be sufficiently soft, have less creep, and have appropriate damping.
However, the conventional anti-vibration structure that uses rubber cannot be made sufficiently soft due to creep, etc., and the structure that uses a metal spring has insufficient damping and absorbs the impact force of a drop. It had a drawback that it was difficult to do.

[0005]

As described above, in order to reduce the noise of the electric vacuum cleaner, it is necessary to sufficiently isolate the fan motor from vibrations. For this reason, it is necessary to realize an anti-vibration structure that is sufficiently soft, has little settling and creep, and has appropriate damping.

[0006]

The means for solving the above-mentioned problems is, in claim 1, the fan motor for sucking dust and the like, the main body containing the fan motor, and the dust sucked together with air. The fan has a dust collection filter and a suction port for sucking dust together with air, and the fan is provided at approximately the center of a polygonal support body composed of a plurality of linear or plate-shaped spring members whose both ends are supported by the main body. By bringing the outer periphery of the fan motor into contact with the polygonal support so that the center of the motor is located, it is possible to realize an electric vacuum cleaner in which the fan motor is elastically and vibrationally supported by the main body.

According to a second aspect of the present invention, there are provided a fan motor for sucking dust and the like, a main body including the fan motor, a dust collecting filter for separating dust sucked together with air, and a suction port for sucking dust together with air. A plurality of plate-shaped spring members having elasticity in the radial direction are provided between the main body and the fan motor, and the plate-shaped spring members, the main body, and the fan motor are rotatably supported. Vacuum cleaner having a configuration.

[0008]

The operation of the above means is as follows.

According to the first aspect of the present invention, the rod-shaped or plate-shaped elastic body forming the polygonal support is strong in the lengthwise direction, but is sufficiently soft in the bending direction and has a small creep or settling. By bringing the outer periphery of the fan motor into contact with the polygonal support body, the fan motor vibrating and whirling is supported in the bending direction of one side of the polygonal elastic body and at the same time as the other side. Damped by the friction of. That is, the support with softness, small creep, and moderate damping can be performed, the vibration of the fan motor can be isolated, and the noise of the vacuum cleaner can be reduced.

According to the second aspect of the present invention, a plate-shaped spring material having elasticity in the radial direction is rotatably supported by the main body and the fan motor, so that the plate-shaped spring can be freely moved in the width direction of the fan. It is possible to flexibly support whirling vibrations of the motor, and the friction of the rotation support part causes appropriate damping, which makes it possible to provide a stable and excellent vibration damping support structure. Noise can be reduced.

[0011]

Embodiments of the present invention will be described below with reference to FIGS.

The same parts as those of the conventional example are designated by the same reference numerals, and the invention is omitted. The claim 1 will be described. Figure 1,
FIG. 2 shows a supporting portion of the fan motor of the present invention,
FIG. 1 is a side view of the fan motor portion, and FIG.
Shows a view from the rear. As shown in FIG. 3, reference numeral 30 is in front of the polygonal support, and four plate-shaped elastic bodies 3 are provided.
It is composed of 1. In the present embodiment, the plate-shaped elastic body 31 is made of a metal leaf spring, and both ends of each are press-fitted and fixed to the elastic body mounting body 36 to form a quadrangular support front 30 and support the main body. It is fixed to the main body by the rib front 41. Then, the central portion of the plate-shaped elastic body 31 comes into contact with the outer periphery 32 of the motor portion 7 of the fan motor 1,
The fan motor 1 is supported near the center of a quadrangular support. The housing portion 8 at the rear of the fan motor 1 is also supported by the rear support 34 having a polygonal shape and formed by four linear elastic bodies 33. That is, as shown in FIGS. 4 and 5, a support ring 38 having a groove 37 is attached to the housing portion 8, and the central portion of the linear elastic body 33 is slidably fitted in the groove 37. There is. The ends of the individual linear elastic bodies are press-fitted and fixed to the elastic body mounting body 39, and the whole is sandwiched by the supporting ribs 40 of the main body.
A disk-shaped sealing plate 3 is provided around the intake hole 2 of the fan motor.
5 is fixed, and the intake and exhaust are sealed by contacting the partition plate 12 with the dust collecting part.

Next, the operation will be described. Since the fan motor rotates at about 30,000 (rpm), about 500 (H
The fan motor vibrates at z). This vibration is whirling vibration and vibrates in all radial directions. Both ends of each elastic body are supported by the main body on a polygonal support body,
It is soft in the bending direction, and the fan motor and this elastic body are only in contact with each other, and the fan motor slides on the elastic body and generates frictional force between them when the vibration is in a direction other than the bending direction. .. That is, the whirling vibration fan motor is supported by the elastic force in the bending direction of the elastic body, and at the same time, causes a sliding frictional force between the elastic body and the elastic body, and this frictional force gives a damping force to the vibration. This damping force works effectively against the impact force at the time of dropping and absorbs the impact force. Further, in this example, since the rear support member 34 formed of a linear elastic member is fitted in the groove portion of the support ring fixed to the housing portion, it is elastic to the suction force acting in the axial direction. I support you.

The elastic support may have a triangular or pentagonal polygonal shape, and the elastic force in each direction can be changed by slightly bending the central portion of a part of the plate-like or linear elastic body inward. ..

It is also possible to increase the friction damping force by sticking a rubber sheet or the like on the surface of the elastic body. On the contrary, it is also possible to reduce the friction damping force by sticking a material having a good slip property.

Next, claim 2 will be described with reference to FIGS. FIG. 6 is a cross-sectional view of a fan motor support portion of one embodiment of the present invention as seen from the side. Reference numeral 51 is in front of an elastic support body, an inner ring support body 52, an outer ring support body 53, and six U-shaped plates. The spring 54 is formed. As shown in FIG. 7, small holes 55A and 55B are provided at both ends of the plate spring 54. The outer ring support 53 and the inner ring support 52 are provided with protrusions 56A and 56B, respectively, and rotatably fitted into the small holes 55A and 55B to support the plate spring 54. Elastic support 5 is shown in FIG.
1 is a cross-sectional view seen from the rear, and FIG. 8B is an enlarged cross-sectional view of the leaf spring. The inner ring support 52 of the elastic support front 51 is press-fitted and fixed to the outer periphery of the fan motor 1, and one outer ring support 53 is attached to the main body by the rib front fixed to the main body, so that the fan motor 1 is attached to the main body. Elastically supported. 57 is the same as that before the elastic support after the elastic support, and the outer ring support 58, the inner ring support 59,
It is composed of a leaf spring 60, and the leaf spring is rotatably attached. After this elastic support 57
The inner ring support 59 is fixed to the motor portion of the fan motor 1, and the outer ring support 58 is fixed to the main body by abutting against the rear of the rib of the main body. Reference numeral 35 denotes a disk-shaped seal plate, which is in contact with the partition plate 12 with respect to the dust collecting portion to seal intake and exhaust.

Next, the operation will be described. When the vacuum cleaner is driven to collect dust, the fan motor drives about 30,000
It rotates at 0 (rpm) and vibrates at about 500 (Hz). That is, the outer periphery of the fan motor has vibration components in both radial and axial directions. Since each leaf spring is bent in a U-shape, it is flexible in the radial direction (the bending direction of the leaf), but hard in the tangential direction, that is, the width direction of the leaf. However, since this plate spring is rotatably attached to the outer ring support (that is, the main body side) and the inner ring support (that is, the fan motor side), the plate spring is loosely supported in the width direction. Thus, the individual leaf springs in front of the elastic support are flexible in the bending direction and loose in the width direction, and the inner ring support is more rigid than the outer ring support in the bending direction rigidity of the leaf spring. Therefore, it is possible to flexibly support the whirling vibration. Further, the friction caused by the sliding between the plate spring and the outer ring support and the inner ring support gives a damping force, and appropriate damping can be added to vibration and impact. If this plate-shaped spring is made of a spring material such as metal, it is possible to make the fan motor excellent in vibration-proofing because it is flexible and can reduce creep and settling.
Further, as shown in FIG. 9, the small holes 55A, 5A of the plate spring 54 are
By shifting the center of 5B, it becomes possible to make the movement of the leaf spring in the width direction smoother. Further, it is of course possible to omit the inner ring support and the outer ring support and directly attach a plate spring to the main body and the fan motor.

[0018]

The present invention has a fan motor for sucking dust and the like, a main body containing the fan motor, a dust collecting filter for separating dust sucked together with air, and a suction port for sucking dust together with air. The outer periphery of the fan motor is placed on the polygonal support so that the center of the fan motor is located approximately at the center of the polygonal support that is composed of a plurality of linear or plate-shaped spring members whose both ends are supported by By contacting the fan motor with elastic vibration isolation support to the main body, it has appropriate damping, and is flexible, and can perform vibration isolation support with less fatigue and creep, realizing a vacuum cleaner with low noise. it can.

Further, the main body has a fan motor for sucking dust and the like, a main body containing the fan motor, a dust collecting filter for separating dust sucked together with air, and a suction port for sucking dust together with air. Between the fan motor and the fan motor, a plurality of plate-shaped spring materials having elasticity in the radial direction are provided, and the plate-shaped spring material, the main body, and the fan motor are rotatably supported. As a result, it is possible to realize a vacuum cleaner that has appropriate damping, is soft, and has a small amount of creep, and thus is low in noise.

[Brief description of drawings]

1 is a sectional view of a fan motor supporting portion of a vacuum cleaner according to an embodiment of the present invention related to claim 1;

FIG. 2 is a cross-sectional view of a fan motor supporting portion of the vacuum cleaner according to the first embodiment of the present invention as viewed from the rear.

FIG. 3 is a perspective view before the support of the present invention according to claim 1;

FIG. 4 is a perspective view after the support of the invention according to claim 1;

FIG. 5 (a) is a sectional view of a rear portion of a support member of a vacuum cleaner according to an embodiment of the present invention according to claim 1; and (b) is a rear portion of a support member of a cleaner according to an embodiment of the present invention according to claim 1. Sectional view seen from the rear

FIG. 6 is a sectional view of a fan motor supporting portion of the vacuum cleaner according to the second embodiment of the present invention.

FIG. 7 is a perspective view of the plate-shaped spring according to claim 2;

FIG. 8 (a) is a front sectional view before the support according to claim 2; (b) is an enlarged sectional view before the support according to claim 2;

FIG. 9 is another embodiment of the support according to claim 2.

FIG. 10 is a sectional view showing a conventional vacuum cleaner.

[Explanation of symbols]

 1 Fan Motor 31 Plate Spring 30 Support 54 Plate Spring

Claims (2)

[Claims] 1. A main body having a fan motor for sucking dust and the like, a main body containing the fan motor, a dust collecting filter for separating dust sucked together with air, and a suction port for sucking dust together with air. The outer periphery of the fan motor is positioned so that the center of the fan motor is located substantially at the center of the polygonal support body composed of a plurality of linear or plate-like elastic bodies whose both ends are supported by the polygonal support body. An electric vacuum cleaner in which the fan motor is elastically and vibrationally supported on the main body by being brought into contact with the vacuum cleaner. 2. A main body having a fan motor for sucking dust and the like, a main body containing the fan motor, a dust collecting filter for separating dust sucked together with air, and a suction port for sucking dust together with air. Between the fan motor and the fan motor, a plurality of plate-like springs having elasticity in the radial direction are provided, and the plate-like spring material and the main body and the fan motor are rotatably supported. Machine.