JPS6053619B2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a vacuum cleaner in which the exhaust side of a fan motor is surrounded by a case for the purpose of blocking exhaust noise.

2. Description of the Related Art In some conventional vacuum cleaners of this type, the exhaust side of the fan motor is surrounded by a case for the purpose of sound insulation.

The case is attached by press-fitting the opening of the case onto the outer periphery of a front support member that elastically supports the front part of the fan motor. Problems to be Solved by the Invention However, with this configuration, the vibration of the fan motor is transmitted to the case via the front support member, and the resonance increases noise at specific frequencies. .

The present invention eliminates these conventional drawbacks, eliminates resonance of the case, and improves noise reduction.

Means for Solving the Problems In order to solve these conventional problems, the present invention houses a fan motor unit in which the exhaust side of the fan motor is surrounded by a case within the main body of the vacuum cleaner, and The opening is press-fitted into a press-fit piece of a front support member that elastically supports the fan case portion of the fan motor to the main body of the vacuum cleaner, and the rear support member of the fan motor is supported at the bottom of the case, and A gap is formed between the press-fit piece and the fan case, and both sides of the case are supported by the vacuum cleaner itself.

In this configuration, since the pressure piece faces the fan case with a gap, it is able to flex well, and therefore vibrations are hardly transmitted to the case where the opening is press-fitted into the press-fit piece.

Furthermore, the fan motor unit can be reliably supported by a so-called three-point support system, including the support point of the front support member and the support points on both sides of the case. EXAMPLES Below, examples will be described with reference to the accompanying drawings.

In the figure, 1 has a built-in fan motor unit 2, cord reel 3, input power controller 4, etc., and wheels 5 at the bottom.
6 is a dust case removably connected to the front of the vacuum cleaner body 1, which has a filter device 7 therein, an air intake port 8 at the front, and a dust case 6 attached to the front part of the vacuum cleaner body 1. It has a handle 9 extending to one side, and casters 10 at the bottom. 11 is a vacuum cleaner body 1 provided behind the handle 9
This is a buckle for connecting the dust case 6 and the dust case 6.

The main body 1 of the vacuum cleaner is divided into three chambers 1, upper, middle and lower by partition walls 12 and 13.
The input power controller 4 is in the upper chamber 14, the fan motor unit 2 is in the hollow 15, and the lower chamber 1 is divided into 4, 15, and 16.
A cord reel 3 is housed in each of the cord reels 6 and 6. The fan motor unit 2 surrounds a fan motor 17, front and rear support members 18 and 19 made of an elastic material such as rubber, and the exhaust side of the fan motor 17, and has exhaust ports 20 at two locations on the peripheral wall. The case 21 has a cylindrical shape with one end open and a bottom.

More specifically, the front opening of the case 21 is press-fitted into the outer periphery of the front support member 18 attached to the fan case portion 17'' of the fan motor 17, and the rear support member 19 is held at the bottom wall thereof. The fan motor unit 2 is supported in the middle chamber 15 via a front power support member 18, and a boss 22 protruding from the case 21 to both sides is supported via a buffer material 23. The rear part of the fan motor unit 2 is supported by the inner chamber 15 by being fitted into the cylindrical rib 24 of the inner chamber 15. That is, the fan motor unit 2 is supported by the main body 1 of the vacuum cleaner by so-called three-point support.2
5 and 26 are sound-absorbing materials interposed between the fan motor 17 and the case 21, and 27 is a main body exhaust port equipped with an exhaust filter 28.

Now, FIG. 3 shows the front support member 18 of the case 21. In other words, an annular press-fit piece 29 is projected from the rear end of the front support member 18 and extends rearward with a gap t from the fan case portion 1r. is press-fitted.

In the above configuration, the vibration of the fan motor 17 is mainly transmitted to the case 21 via the front support member 18. However, in this embodiment, the gap t between the fan case portion 17' and the case 2 to the press-fit piece 29 that exists in
1 is press-fitted, there is almost no vibration transmitted to the case 21.

In other words, the presence of the gap t allows the press-fitting piece 29 to flex well, thereby significantly improving the damping function against vibrations. Figure 5 shows a comparison of the frequency characteristics of noise.The noise level reached the a value at a ratio of about 43, but the noise level of the example above reached the b value of about 10.
It decreased by dB.

Next, FIG. 4 shows an annular protrusion 30 on the outer periphery of the tip of the press-fit piece 29.
is provided in a protruding manner, and the inner surface of the opening of the case 21 is pressed onto this protruding portion 30.

In this example, the crimping properties between the protruding portion 30 and the case 21 are improved, ensuring air tightness between them, and the flexibility of the press-fitting piece 29 is also improved, increasing the cushioning performance against the vibration of the saw layer. be. Furthermore, since the fan motor unit 2 is supported at three points relative to the main body 1 of the vacuum cleaner, the support is stable and reliable. Effects of the Invention As described above, according to the present invention, vibration transmission from the fan motor to the case is suppressed, noise caused by resonance is reduced, quietness is achieved, and the fan motor unit can be mounted stably and reliably. It is possible to provide a vacuum cleaner.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side sectional view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a front sectional view, Fig. 3 is a sectional view of the case press-fit part, and Fig. 4 is a side sectional view of a vacuum cleaner according to another embodiment. FIG. 5, which is a sectional view of the press-fitted part of the case, is a frequency characteristic diagram of noise. 1...Vacuum cleaner main body, 2...Fan motor unit, 17...Fan motor, 17''...
...Fan case part, 18...Front support material, 19.
... Rear support material, 21 ... Case, 29.
...Press-fitting piece, 30...Protrusion part, t...
gap.

Claims (1)

[Scope of Claims] 1. A fan motor unit whose exhaust side of the fan motor is surrounded by a case is housed in a main body of the vacuum cleaner, and the opening of the case elastically supports the fan case portion of the fan motor in the main body of the vacuum cleaner. The fan motor is press-fitted into a press-fit piece of the front support material, and the rear support member of the fan motor is supported at the bottom of the case, and a gap is formed between the press-fit piece and the fan case; A vacuum cleaner in which both sides of the case are supported by the vacuum cleaner itself. 2. The vacuum cleaner according to claim 1, further comprising an annular protrusion that protrudes from the outer surface of the press-fitting piece and is press-fitted to the inner surface of the opening of the case.