JPS6038130B2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vacuum cleaner in which a case is arranged around the outer circumference of an electric blower.

Conventional Structures and Problems Conventionally, in order to reduce the noise of electric vacuum cleaners, there have been electric blowers in which a substantially cylindrical case with a bottom is disposed around the outer circumference of the electric blower.

The closing part of the case fits the fan case of the electric blower, but since both are rigid bodies, it is difficult to exhaust the air, and there is an exhaust leak, and the sound generated by the electric blower also leaks. Turbulent flow also occurred, causing noise. However, there were problems such as vibrations from the electric blower being transmitted to the case and main body, increasing noise. Purpose of the Invention The present invention solves these conventional drawbacks.
The present invention provides a vacuum cleaner with reduced noise and vibration.

Structure of the Invention The vacuum cleaner of the present invention covers the outer periphery of an electric blower in which a front cushioning material is attached to the fan case part with a bottomed case having a case exhaust port in part, and a rear part of the electric blower. is supported at its bottom via a rear cushioning material, and the opening of this case is joined to the outer periphery of the front cushioning material with a fixed length of joining allowance, and the front cushioning material and both sides of the case are connected to each other. Three points are elastically held within the vacuum cleaner body.

Therefore, the exhaust air between the fan case portion and the case is reliably performed and a predetermined exhaust path is secured, thereby preventing noise leakage.

Furthermore, since the closing part of the case is attached to the fan case section via the front cushioning material, the vibrations of the electric blower are absorbed by the front cushioning material and are not transmitted to the case. Furthermore, the unit body consisting of the electric blower and the case is supported within the vacuum cleaner body using a so-called three-point support system, which includes the front cushioning material and both sides of the case, which provides stable support. Moreover, since there is a fixed length of joint allowance between the case entrance and the front cushioning material, even if the case is displaced relative to the electric blower due to wind pressure, etc. It does not create any gaps.

DESCRIPTION OF THE EMBODIMENTS The embodiments will be described below with reference to the drawings.

In the figure, 1 is a vacuum cleaner main body (hereinafter referred to as the main body), 2 is a dust collection box having an intake hole 3, and a handle 4 is disposed on the upper part of the dust collection box. 5 is a filter device built into the dust collection box 2.

The dust collection box 2 is detachably attached to the main body 1 by a buckle mechanism 6 provided on the handle 4. 7 is a cord winding device built into the lower part of the main body 1, and an electric blower 9 equipped with a substantially cylindrical bottomed case 8 is mounted on the upper part of the cord winding device, and an operation switch 10, a dust indicator 11, and an electric blower are mounted on the upper part of the cord winding device. A main printed circuit board 12 incorporating a control circuit for controlling the input of the blower 9, an LED printed circuit board 14 equipped with a light emitting diode 13, etc. are built-in.

The main body 1 is composed of a main body stand 15 and a main body 16, each of which has a cord winding device chamber 17 and an electric blower chamber 18 from the bottom.
, partition wall A20 and partition wall B for forming the functional component chamber 19
21 is formed and connected to hold and secure each of the above devices.

22 is an exhaust filter arranged at the rear of the electric blower 18, 23 is a main body exhaust port, and 24 is a main body handle arranged in a concave shape on the upper part thereof.

25 is a front cushioning material made of rubber attached to the fan case portion 9' of the electric blower 9, and 26 is a rear cushioning material.

The front air case 8 holds the electric blower 9 via the front and rear rib members 25 and 26, and furthermore, the support rubber 27 and the front cushioning material 25 arranged at both ends of the outer circumference are attached to the right side 15 of the main body and the left side 1 of the main body.
It is held at 6. 28 is a soundproofing material wrapped around the outer periphery of the electric blower 9 to reduce noise, and 29 is also a case bottom lining attached to the bottom of the case 8 for the same purpose.

The closed end of the case 8 is formed into a circular shape, and the front cushioning material 25
Approximately 5 ribs are press-fitted around the outer circumference.

Furthermore, a step 25' is formed at the mating end of the front cushioning material 25 so that the open end surface of the case 8 and the inner peripheral surface are mated, and
An annular lip 25'' is formed near the center of this step 25', and when the case 8 is inserted into the front cushioning material 25 from the state shown in FIG. 4 as shown by the arrow to form the state shown in FIG. The end surface of the entrance and the inner peripheral surface contact the entire surface of the stepped section 25' of the front cushioning material 25, and the annular lip 25r ensures the close contact.8' is the case placed in the case 8. At the exhaust port, the exhaust air flows to the exhaust port 9'' of the electric blower 9, the case exhaust port 8', and the main body exhaust port 23.

In the above configuration, the case 8 includes front and rear cushioning materials 25, 2.
6 to hold the electric blower 9, and the right side of the main body 1
5. The left side 16 of the main body holds the front cushioning material 25 and the support rubber 27 provided on both sides of the case 8, that is, three points.
A very stable holding state is obtained, and the vibrations of the electric blower 9 are not transmitted to the case 8 and the main body 1 (vibration is prevented, so noise is reduced).

In addition, since the closing part of the case 8 is press-fitted into the front cushioning material 25 with a certain length of joining allowance, the case 8 may be displaced in the direction of the ball relative to the electric blower 9 due to wind pressure or the like. There will be no gaps and no leakage of exhaust gas, which will prevent turbulence from occurring in those areas, reducing the number of sources of noise.

Furthermore, since the sound of the electric blower 9, which is the sound source, does not leak, a remarkable effect is produced in reducing noise.

In addition, if a corner radius is provided in the entrance part and the front cushioning material 25 of the case 8 so that it can be easily inserted and inserted, ease of insertion and assembly will be improved.

Effects of the Invention As described above, according to the present invention, since the electric blower rock is held elastically and stably, vibration and noise can be reduced, and the case can be prevented from pivoting against the electric blower due to wind pressure, etc. There is no leakage of exhaust gas even if it is relatively displaced in all directions, which can further promote noise reduction.

[Brief explanation of the drawing]

Fig. 1 is a cutaway sectional view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a half-cut sectional view of an electric blower section, Fig. 3 is a front sectional view of the same, and Fig. 4 is an electric blower. FIG. 5 is a cutaway sectional view of the main part showing a state in which the case is inserted. FIG. 5 is a cutaway sectional view of the main part showing a state in which the case is inserted into the electric blower. 1... Vacuum cleaner body, 8... Case, 8
'...Case exhaust port, 9...Electric blower, 9'...Fan case, 25...Front cushioning material, 25''...Lip, 26... Rear cushioning material. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1. The outer periphery of an electric blower with a front cushioning material attached to the fan case part is covered with a bottomed case having a case exhaust port in part, and the rear part of the electric blower is covered with a rear cushioning material. The opening of this case is joined to the outer periphery of the front cushioning material with a certain length of joining allowance, and the front cushioning material and both sides of the case are connected at three points. A vacuum cleaner that is elastically held within the vacuum cleaner body. 2. The vacuum cleaner according to claim 1, wherein a lip is formed on the outer periphery of the front cushioning material to make elastic contact with the inner surface of the case.