JP2850532B2 - Electric vacuum cleaner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vacuum cleaner having a vibration-proof structure.

2. Description of the Related Art In recent years, vacuum cleaners are widely used, and there is a high demand for reducing noise. A conventional vacuum cleaner generally has a configuration as shown in FIG. This will be described below with reference to the drawings.

As shown in the figure, an electric blower 1 for sucking air includes an impeller (not shown) having a plurality of blades, an air guide (not shown) installed on the outer periphery of the impeller,
It comprises a fan case 4 containing these components and an electric motor 5 for driving the impeller. The fan case 4 has an intake hole 6 protruding at the center, and a ring-shaped anti-vibration rubber / seal 7 is attached to this portion. A rectangular anti-vibration rubber 8 is attached to a rear portion of the motor 5, and the electric blower 1 is supported by the main body 9 through the anti-vibration rubbers 7 and 8.

The dust collecting chamber 10 containing the dust collecting paper bag and the exhaust chamber 11 containing the electric blower 1 are separated by a partition plate 12 having a communication hole 14 at the center. The front end portion 13 of the vibration-proof rubber / seal 7 abuts around the communication hole 14 of the partition plate 12 to seal the intake and exhaust air.

The operation of the anti-vibration seal in the above configuration will be described. Electric blower 1 is about 500 (Hz) due to rotational imbalance
The vibration is transmitted to the main body and causes noise. In order to prevent this noise, it is desirable to support the electric blower 1 softly and anti-vibration, and the electric blower 1 having a swing vibration mode due to whirling vibration.
The vibrating rubber / seal and vibrating rubber 8 which are as soft as possible in the vicinity of the axis of rotation are supported to be as soft as possible.

In such a conventional vacuum cleaner, if the vibration-proof rubber is softened, the contact force of the vibration-proof rubber and seal against the partition plate 12 is weakened, and the performance as a seal is deteriorated. Set occurs due to creep of the rubber itself. Therefore, the hardness of the vibration isolating rubber is determined by the sealing property and the durability of the rubber, and there is no support structure for the electric blower 1 having these contradictory characteristics, so that there is a problem that vibration and noise are high.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a vacuum cleaner capable of reducing noise around 500 (Hz) due to rotational vibration of an electric blower.

Means for Solving the Problems In order to achieve the above object, a first object of the present invention is to provide an electric blower in which an air inlet of an electric blower is made to correspond to an air inlet of a partition plate of a dust collecting chamber, and a seal is provided on an outer periphery of the air inlet. The vibration-absorbing rubber having an annular groove is attached to the rear end of the electric fan of the electric blower, and a support piece provided in the main body is fitted into the annular groove of the vibration-proof rubber. It is supported to regulate the load and rotation, and the outside of the electric motor of the electric blower is configured to be narrowly supported by a pair of elastic support bands having both ends locked to a support provided in the main body, The second means for solving the problem is that the support band is slidably inserted into the support using a non-stretchable material, and both ends of the support band are urged by a tension spring. The solution to the problem of A cap-shaped anti-vibration rubber is attached to the rear end of the motor of the electric blower, fitted with the support piece provided in the main body, a groove is provided on the outer periphery of the motor, and a folded piece made of a non-stretchable material is provided at the end. A pair of support bands having a pair of support bands are urged by a tension spring to pinch the electric motor, and the end of the folded piece is engaged with a support provided in the main body and is fitted into an outer peripheral groove of the electric motor. Further, a fourth object of the present invention is to provide a cap-shaped vibration isolating rubber with a flange portion fitted to a support piece provided in a mounting body at a rear end of the electric motor so as to provide a plurality of holes in a support band and the electric motor. Is provided with a convex portion on the outer peripheral portion thereof, and the convex portion is fitted into a hole of the support band.

Operation The operation of the first problem solving means described above is that the support band can be fitted to the vibration isolating rubber support piece to support the thrust load and rotation of the electric blower, and the support band can press and support the outside of the electric motor, The operation of the second means for solving the problem is that both ends of the support band are pulled by a tension spring to give tension,
The support band can press and support the outside of the motor, and the function of the third problem solving means is to insert the material of the support band into the groove of the motor by engaging the end of the folded piece with the support, The other end of the folded piece is urged by a pull spring to pinch and support the outer peripheral portion of the electric blower.
The operation of the means for solving the problem is that the convex portion provided on the outer peripheral portion of the electric blower is inserted into the hole of the support band, and both ends of the support band are pulled by a pull spring, so that the support band presses the outside of the motor. I can support it.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the embodiments, the same parts as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

FIGS. 1 and 2 show an embodiment of the first means for solving the problems of the present invention. As shown in the figure,
31a, 31b, 31c and 31d are support members located on both sides of the electric blower 1 and fixed to the main body 9. That is, in this example, the supports 31a, 31b, 31c, 31d are rectangular pipes, and the attachment portions 32a, 32b, 32c, 32d are provided at one end. The mounting portion 32 is fitted to ribs 33a and 33b provided on the side wall of the main body, and is fixed to the main body 9.

A total of four supports are provided, two on each side. Reference numerals 34a and 34b denote rubber support bands, which are bridged between the supports by being connected to the pipes of the supports. In this example, two upper and lower support bands are provided. The electric blower 1 is supported so as to be held between the support bands. That is, the outer periphery of the electric motor unit 2 of the electric blower 1 is placed on the lower support band 34b, and the electric blower 1 is elastically supported in the radial direction so as to be pressed by the upper support band.

The anti-vibration rubber 8 has a rectangular shape and is supported by restricting movement in the axial direction and the torque direction by being fitted to the main body support rib 36.

Reference numeral 37 denotes a seal provided around the intake hole 6 of the electric blower 1, which seals intake and exhaust by contacting the partition plate 12 of the main body.

In the above configuration, the electric blower 1 is supported by the elasticity of the pulling directions of the support bands 34a and 34b, and furthermore, because of the suspension configuration, the support can be very soft in all directions with a simple configuration, and The effect can be greatly improved, and the noise caused by the rotational vibration of the electric blower 1 can be greatly reduced.

Further, if the electric motor unit 2 of the electric blower 1 having a small outer diameter is supported, the space can be saved, and the weight applied to the anti-vibration rubber 8 is small because it is close to the center of gravity, so that the radial support can be softened.

FIG. 3 and FIG. 4 show an embodiment according to the second means for solving the problem of the present invention. In each figure, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals, and the description thereof will be omitted.

In the figure, 40a and 40b are non-stretchable support bands,
Through the support 31 fixed to the main body, tension springs 41a, 41b
Is biased through.

The upper support band 40a is provided such that the tension spring 41a is on the upper side, and the lower support band 40b is provided such that the tension spring 41b is on the lower side. The electric blower 1 is suspended so that the surface 45 on the side opposite to the spring of the support bands 40a and 40b is in contact with the electric blower 1. In this example, two upper and lower support bands 40
a, 40b, and metal coil springs are used as the tension springs 41a, 41b.

In this configuration, since spring elasticity is used, creep does not easily occur and very soft support can be realized. In addition, it is possible to provide damping due to friction between the support bands 40a, 40b and the electric blower 1 and friction between the support 31 and the support bands 40a, 40b. And a stable and extremely excellent vibration-proof effect can be realized.

FIG. 5, FIG. 6, and FIG. 7 show an embodiment according to the third means for solving the problem of the present invention. In each figure, the same parts as those in FIGS. 3 and 4 are denoted by the same reference numerals, and the description thereof will be omitted. In the figure
50a and 50b are non-stretchable support bands, which have folded pieces 50a and 51b and have a flat plate shape. Then, it is urged through the support 31 fixed to the main body and through the tension springs 41a and 41b. A groove 52 is provided on the outer periphery of the electric blower 1.
And the folded pieces 51a, 51b of the flat support bands 50a, 50b are
The electric blower 1 is suspended and vibration-proof supported so as to fit into the groove 52.

In this configuration, the folded pieces 51a and 51b of the flat support band 50 are used.
Is fitted in the groove 52 of the electric blower 1, it is possible to regulate the axial movement of the electric blower 1, and there is no need to regulate the axial direction by the vibration-proof rubber 8.
The configuration of 53 becomes simple. Also, the support bands 50a, 50b
Is small in the case of a small movement, and has a small adverse effect on the vibration isolation force.

FIGS. 8, 9 and 10 show an embodiment according to the fourth means for solving the problem of the present invention. In each drawing, the same parts as those in FIGS.
The same reference numerals are given and the description is omitted. In the figure, 60
a, 60b is a non-stretchable support band, which is in the shape of a flat plate, and is passed through supports 31a, 3b, 31c, 31d fixed to the main body, and urged through tension springs 41a, 41b. I have. The support bands 60a, 60b are provided with a plurality of holes 62. A plurality of protrusions 63 are provided on the outer periphery of the electric motor 5. The holes 62 provided on the surfaces of the support bands 60a and 60b on the side opposite to the springs are fitted to the convex portions 63 of the electric motor 5 to support the electric blower 1.

In this configuration, the convex portion of the electric motor 5 and the support bands 60a, 60b
Since the holes 62 of the electric blower 1 are fitted, the movement of the electric blower 1 in the thrust load and the torque direction can be regulated.
Therefore, the thrust load and the movement in the torque direction are not restricted, and the configuration of the vibration isolation rubber 64 is simplified. Further, since the suspension support by the support bands 60a and 60b is an elastic suspension support, there is no need to restrict it against minute movements, and there is little adverse effect on the anti-vibration effect.

In this embodiment, two support bands are used, but a configuration in which the support band is used only on the lower side and the upper part is held down by an elastic body may be used.

Further, instead of supporting the electric motor 5 at a position close to the center of gravity, the fan case may be supported, and the rear portion may be supported by a support band.

As is clear from the above description of the embodiment, according to the vacuum cleaner of the present invention, the vibration-proof rubber is fitted to the support piece to support the electric blower so as to regulate the thrust load and rotation, Since the support band clamps the outside of the electric motor to elastically support it, the vibration of the electric blower can be absorbed and noise reduction can be realized.

[Brief description of the drawings]

FIG. 1 is a sectional view of an electric vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. FIG. 4 is a cross-sectional view of a vacuum cleaner according to an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, and FIG. FIG. 6 is a sectional view of the vacuum cleaner, and FIG.
FIG. 7 is a side view showing the electric blower of the vacuum cleaner, FIG. 8 is a cross-sectional view of the vacuum cleaner of one embodiment according to the fourth means for solving the problem of the present invention, and FIG. 8 is a sectional view taken along line AA of FIG. 8, FIG. 10 is a side view showing the electric blower of the vacuum cleaner, FIG. 11 is a partial external perspective view of a support band of the vacuum cleaner, and FIG. It is sectional drawing of a vacuum cleaner. 1 ... electric blower, 3 ... electric motor, 8 ... anti-vibration rubber, 12
... partition plate, 14 ... suction port, 31 ... support piece, 34 ... support band, 36 ... support, 37 ... seal member.

Claims (4)

(57) [Claims] An air blower having an intake hole of an electric blower corresponding to a suction opening of a partition plate of a dust collecting chamber, a sealing member abutting on the outside of the intake hole, and an anti-vibration rubber having an annular groove at a rear end of the electric blower. Attach, a support piece provided in the main body is fitted into the annular groove of the vibration isolating rubber, and the support piece supports the thrust load and rotation so as to restrict the thrust load and rotation, and the outside of the motor of the electric blower is inserted into the main body. An electric vacuum cleaner which is supported with a narrow pressure by a pair of elastic support bands having both ends locked to a provided support. 2. An anti-vibration rubber having an air inlet of an electric blower corresponding to an inlet of a partition plate of a dust collecting chamber, a seal member abutting on the outside of the air inlet, and an annular groove at a rear end of the electric blower. Attach, a support piece provided in the main body is fitted into the annular groove of the vibration isolating rubber, and the support piece supports the thrust load and rotation so as to restrict the thrust load and rotation, and the outside of the motor of the electric blower is inserted into the main body. Slidably inserted through the support provided,
An electric vacuum cleaner comprising a pair of non-stretchable support bands urged at both ends by tension springs to narrowly support the electric blower. 3. An anti-vibration rubber in the form of a flanged cap is attached to the rear end of the electric motor of the electric blower, which is fitted to a support piece provided in the main body, a groove is provided on the outer periphery of the electric motor, and a non-stretchable A pair of support bands made of a material and having folded pieces at the ends,
An electric vacuum cleaner which is biased by a tension spring to narrow the electric motor, and an end of the folded piece is engaged with a support provided in a main body and is inserted into an outer peripheral groove of the electric motor. 4. An anti-vibration rubber in the form of a flange with a cap is attached to the rear end of the electric motor, fitted to a support piece provided in the main body, and provided with a plurality of holes in a non-stretchable support band. The vacuum cleaner according to claim 2, wherein a plurality of convex portions are provided on an outer periphery, and the convex portions are fitted into holes of the support band.