JPH02289219A - Electric cleaner - Google Patents

Abstract

PURPOSE:To make the vibration of a fan motor hard to be propagated thereby lowering noise by making the front of ring-shaped rubber vibration insulator, which is mounted on the periphery of the suction port of a casing, abut on the rib of a cleaning material body thereby making it air tight, and providing space between the rear of the rubber and the front of casing. CONSTITUTION:The suction port 25 of the casing 24 of a fan motor 21 projects frontward, and ring-shaped front vibration proof rubber is mounted on the periphery. The front rubber vibration insulator 34 is made of soft material such as urethane foam, etc., and the front 35 abuts on the body partition wall 36 of the cleaner main body thereby making it air tight. Moreover, by a body flange 37 being formed integrally from the body partition wall 36, it is held in the diameter direction of a fan part 23 by the cleaner main body. A partition plate 40 of the cleaner main body rear parts fits in a groove 39 which is provided in rear rubber vibration insulator 38 fixed to the rear of a motor part 22, whereby it is held in the diameter directions of the motor part 22 and the fan part 23 of the cleaner main body. Space 42 is provided between the rear of the front rubber vibration insulator 34 and the front of the casing 24.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a household vacuum cleaner designed to reduce noise.

BACKGROUND OF THE INVENTION A conventional electric return line 1 will be explained with reference to FIG. In the figure, reference numeral 1 denotes a fan motor that sucks air, and the groove bottom is formed by a motor 7, a fan (not shown) rotated by the motor 7, and a casing 4 that covers the fan.
Intake port 2. The motor 7 has an exhaust port 3. This fan motor 1 has an outer peripheral part 5 of a casing 4 with anti-vibration rubber 6
By.

In addition, the motor bearing nozzle portion 8 is elastically supported by the anti-vibration rubber back 9 on the main TJF-10.
I was trying to shake the main body 10 from the fan motor 1. The vibration-proof rubber front 6Vi has a substantially circumferential shape, and its front end 11 is in close contact with the body partition wall 12 of the main body 1o, and also serves as a seal to prevent exhaust from the exhaust port 3 from flowing back into the intake port 2. I am accomplishing it.

Reference numeral 13 is a paper bag-type dust collection filter, which is detachably attached to the protrusion section 14 at the front of the main body 1o.
By releasing the lid 16, it can be easily taken out. 16 is a hose for collecting whispers.

A floor nozzle) lz17 is attached to one end, and a front cover 1 is attached to the other end.
6 is inserted into the filler 13. 18 indicates a needle reel. Reference numeral 19 is an air passage hole provided in the four walls 12 of the body.

There is a problem with J# in one of the four tuns between the conventional shikibengyoiso that I mentioned above. That is, vibrations due to the unbalanced rotation of the fan motor 1 are transmitted to the wood 1o, generating a strange noise. The vibration mode of the fan motor 1 itself has a property that the 0SJJ vibration in the axial direction becomes larger at the outer peripheral portion 5 of the casing.

Before the anti-vibration rubber 6. It is conceivable that the anti-vibration effect can be improved and the vibrations reduced by making the rear anti-vibration rubber 9 smoother. However, if the anti-vibration rubber 6 is made soft to obtain a sufficient anti-vibration effect, it is effective in absorbing vibration excitation, but the fan motor 1
The i4 sexual support function of the patient is impaired. In other words, since the anti-vibration rubber front e serves as a seal between the intake and exhaust air of the fan motor 1, the space near the intake port 2 becomes a negative pressure, and this suction force reaches about 5 to 10 kg. 5. As a result, the intake port 2 of the fan motor 1 comes into pressure contact with the body bulkhead 12, which causes severe vibration to the body 4 and 12, causing noise and insufficient intake air. This actually caused problems, such as a drop in power by 11, which had the opposite effect.

Also, if the vibration-proof rubber front 6 is too soft, the vacuum cleaner main body 10
The casing 4 was damaged due to impact such as dropping the casing 4.
As a result, whitening may occur on the main body 10.

Problems also occurred in that the casing 4 was easily separated and deformed.

Therefore, the anti-vibration rubber front 6 is a compromise between the two conditions: hardness to withstand and softness to absorb vibrations, which are contradictory to each other. The hardness was set to the point.

For this reason, conventional vacuum cleaners have the drawback of being unable to sufficiently dampen the unbalanced vibrations of the fan motor in the axial direction, resulting in excessive noise.

Problems to be Solved by the Invention As mentioned above, in the conventional fan motor vibration isolation structure, the front of the vibration isolation rubber of the fan motor part is sufficiently strong against axial compressive force and vtHa forces such as drops. Because it is set to a compromise point between two contradictory conditions: softness and softness to absorb vibrations, it is not possible to sufficiently compensate for unbalanced shooting in the axial direction.

The drawback is that it inevitably makes a lot of noise.

It has sufficient vibration damping effect and has axial compressive force.

Is it possible to create a support structure that is 1fft resistant to impact and strong enough to support a fan motor? ! This has become a major issue for the 1st removal machine.

The present invention is intended to solve the problem of the L problem, and its first purpose is to provide a vacuum cleaner with sufficient vibration damping effect. The second purpose is to measure strength and durability.

Means for Solving the Problems The means for achieving the first object is to drive a fan section having a casing having a protruding air intake port provided at the center of the front surface, and an impeller housed in the casing. A fan motor consisting of a motor section, a main body of the cleaner with the fan motor built in, a ring-shaped anti-vibration rubber attached to the outer periphery of the protruding intake port of the casing, and one end of the ring-shaped anti-vibration rubber attached to the rear of the motor section. The fan motor is attached to the vacuum cleaner body to support the fan motor on the vacuum cleaner body.

A space is provided between the rear surface and the front surface of the casing.

Further, in order to achieve the second objective, the intake port of the casing is made to protrude further forward than the intake hole provided in the cleaner body, which the front surface in front of the anti-vibration rubber comes into contact with.

action J:, The effects of the first means are as follows.

In other words, the fan motor is supported in the flea direction by the front of the anti-vibration rubber attached to the fan side and the back of the anti-vibration rubber attached to the rear, but the front of the anti-vibration rubber is supported by the anti-vibration rubber in the axial direction. It is provided in the center of the casing where the excitation component is small, and there is also a space between the rear surface of the vibration isolating rubber curve and the casing, so that = Jc! in the axial direction. la, the vibration is transmitted only to the outer periphery of the casing protrusion, that is, to the inner diameter portion of the vibration isolating rubber mJ, and the vibration to the vacuum cleaner body is extremely low.

In addition, in the second method, the intake port of the casing protrudes further forward than the intake hole that comes into contact with the front surface in front of the anti-vibration rubber of the main body, so there is no impact on the area along the railway or on the roadside. Even if the vacuum cleaner's main body is damaged, the load of the motor can be stopped at this part, and whitening, cracking, etc. of the vacuum cleaner body can be prevented.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, a fan motor 21a includes a motor section 22 and a fan section 23 having an impeller 234 driven by the motor section 22. Casing 24 covering impeller 231L
The casing 24 has a protruding intake port 25 at the center of the front surface, and the motor 22 has an exhaust port 26.

27 is a paper bag type dust collection filter.1. %・Deicing body 28
It is detachably attached to the front east back chamber 29, and can be easily taken out by opening the front cover 3o of the cleaner body 28. 31 is a dust collection hose, and a floor nozzle (VB2) is attached to one end.

The other end is inserted into the filler 27 across the front lid 30. 33 indicates a cord reel.

Next, according to FIG. 2, the vacuum cleaner body 28 of the fan motor 21
The support structure for this will be explained. An intake port 26 of the casing 24 of the fan motor 21 projects forward, and a ring-shaped anti-vibration rubber front 34 is attached to the outer periphery of the intake port 26. The vibration-proof rubber front 34 is made of a European wood such as foamed urethane, and its front 35 abuts against the body bulkhead 36 of the cleaning/deicing wood 28 to form an airtight seal. Also, a body flange 37 integrally formed from the body interval Ji36.
By P! The deicing main body 28 is sandwiched in the radial direction of the fan section 23. Anti-vibration rubber immersion 38 is installed behind the motor section 22.
is fixed, and the four parts 39 provided on the back 38 of this vibration-proof rubber
By fitting the partition plate 40 at the rear of the IC sweeper main body 28, the motor section 22 and the Isomotoki 28 are connected to the fan section 23.
The fan motor 21 is supported in the radial direction vc, and the entire fan motor 21 is prevented from moving forward (in the thrust direction). 41y is an intake hole provided in the body 4436, through which air flows into the casing 24.

Next, 42Vi anti-vibration rubber front 340 theory and casing 24
This is a space provided between the +ji and J sides.

The vibration isolation mechanism in this structure will be described below. −
The vibration mode of the fan motor is whirling vibration as shown in Figure 6, and the vibration near the shaft center on the 34 side before the anti-vibration rubber (X) and on the 38 side after the anti-vibration rubber (Y) is The axial component is very small. Therefore, supporting the fan motor 21 in the axial direction (thrust direction) at the shaft core can reduce the transmission. but.

Furthermore, in the embodiment of the present invention, V, the vibration isolating rubber front 3 attached to the outer periphery of the intake hole 26 of the casing 24 of the fan motor 21
Since a space 42 is provided between the rear surface of the intake port 26 and the front surface of the casing 24, vibrations in the axial direction are caused by the outer periphery of the intake port 26,
In other words, the vibration is transmitted only to the inner diameter portion of the front I vibration isolating rubber 34, and furthermore, the vibration overflow to the 4/1 main body 28 can be reduced. Therefore, the noise generated by the rotation of the fan motor 21 can be reduced, making it possible to provide an excellent 4-air remover.

Another embodiment is shown in FIG. 3, and by configuring the inner diameter D' of the intake hole 41 of the vacuum cleaner body 28 to be as large as possible than the outer diameter of the intake port 25 of the casing 24, the position α of D is While the axial vibration is transmitted from D' to position β, it is attenuated by the vibration isolating rubber front 34, further reducing noise.

Next, in FIG. 4, the intake port 25 of the casing 24 is made to protrude further and protrude further forward than the intake hole 41 provided in the body gap di36.

At this time, like the intake port 26, a part of the vibration-proof rubber front 34 is also made to protrude forward. In the case of a vacuum cleaner constructed in this way, even if something happens to the vacuum cleaner main body 28, the load of the fan motor 21 will be transferred to this body bulkhead 36.
Since the suction hole 41 can be stopped via the anti-vibration rubber front 34, it is possible to prevent whitening, marking, etc. on the outer surface of the vacuum cleaner main body 28.

Effect of the invention As mentioned above, according to the present invention, air cooling and calving are performed.

This makes it difficult for the vibration of the fan motor to spread over the vacuum cleaner body while sufficiently retaining the i-power of the fan motor, and exhibits the effect of lowering the IF of the vacuum cleaner body. In addition, it is 1 strength and can prevent whitening and cracking even if the main body of the vacuum cleaner is subjected to a strong impact.

1# This can also be achieved with Kusumi no Mukai.

[Brief Description of the Drawings] Fig. 1 is a sectional view of a vacuum cleaner according to a first embodiment of the present invention;
FIG. 2 is a partial cross-sectional side view of the same fan motor, FIG. 3 is a partial cross-sectional view of the fan motor showing an embodiment of the song of the present invention, and FIG. 4 shows yet another embodiment of the present invention! A partial cross-sectional view of a fan motor of a vacuum cleaner, FIG. 6 is a diagram showing the vibration mode of a general fan motor, and FIG. 6 (d) is a cross-sectional view showing a conventional vacuum cleaner. Fan motor, 24...Casing. 25...Intake port, 28...Vacuum cleaner body, 34...--Vibration isolating rubber front, 36... Body bulkhead, 3rd...Body flange, 38...
・After vibration-proof rubber, 41... Intake hole, 42...
·space. Name of agent: Patent attorney Shigetaka Kurino and 1 other person 2nd
Figure 42 - Space

Claims (2)

[Claims] (1) A fan part that has a casing with a protruding air intake port provided at the center of the front, a fan motor consisting of a motor part that drives an impeller housed in the casing, and a vacuum cleaner body that has the fan motor built-in. and a ring-shaped anti-vibration rubber attached to the front of the casing in contact with the outer periphery of the protruding intake port, and attached to the rear of the motor section,
It has a vibration-proof rubber rear part that supports the fan motor on the vacuum cleaner body by being latched onto the vacuum cleaner body at one end, and the vibration-proof rubber front comes in contact with a rib inside the vacuum cleaner body on the front side to create air tightness. , a vacuum cleaner that has a fan motor support structure with a space between the rear side and the front side of the casing. (2) The vacuum cleaner according to claim 1, wherein the intake port of the casing projects further forward than the intake hole provided in the vacuum cleaner main body, which the front surface in front of the vibration-proofing rubber comes into contact with.