JPH0665332B2 - Vacuum cleaner - Google Patents

Description

The present invention relates to a vacuum cleaner suitable for household use.

[Conventional technology]

As a conventional electric vacuum cleaner, as described in JP-A-61-115529, an electric blower storage chamber that is hermetically sealed in a main body case is provided, and the electric blower is placed horizontally in this storage chamber. Along with the sound insulation case that serves as a partition of the electric blower storage chamber, the outer periphery of the blower portion of the electric blower is supported by the vibration isolating rubber, and the electric motor portion of the electric blower is supported by the rear vibration isolating rubber, respectively. There is. Moreover, the anti-vibration rubber has a lip that presses against the inner wall of the sound insulating case so that the air tightness with the sound insulating case is sufficiently maintained.

[Problems to be Solved by the Invention]

In the above-mentioned conventional example, since the weight of the electric blower is applied only to the lower portions of the front antivibration rubber and the rear antivibration rubber, in particular, the lip portion of the lower portion of the antivibration rubber is strongly pressed. Sinking, and moreover, the rip portion of the upper portion of the front anti-vibration rubber moves in a direction away from the inner wall of the sound insulation case.
Furthermore, when the electric blower rotates, the upstream side of the electric blower becomes a negative pressure, so the pressing force that moves the front anti-vibration rubber to the upstream side, that is, the direction perpendicular to the direction of the pressing force due to the weight of the electric blower. Is generated. Therefore, there is a problem that a gap is generated between the sound absorbing case and the upper upper lip of the front anti-vibration rubber, and the air-tightness effect of the front anti-vibration rubber cannot be sufficiently obtained. .

Furthermore, in the above-mentioned conventional example, since the front anti-vibration rubber having a lip is press-fitted into the sound insulating case at the time of assembly, there is a very high risk that the lip portion will be turned over, resulting in sufficient airtightness and protection. There is a problem that the effect of shaking cannot be obtained.

Further, in the above-mentioned conventional example, no consideration is given to the configuration of incorporating the electric blower into the main body case, and there is the problem that the electric blower cannot be incorporated into the sound insulation case and the exhaust flow using the electric blower with a large capacity. No consideration was given to the case when the temperature became high, and in that case there was a risk that the sound insulation case would be thermally deformed.

Further, Japanese Utility Model Publication No. 55-51407 discloses an electric vacuum cleaner in which an electric blower is installed vertically, and Japanese Patent Application Laid-Open No. 62-16730 discloses an electric vacuum cleaner using a soundproof cylinder around the electric blower. Is disclosed. However, these examples, including the one described in the above-mentioned JP-A-61-115529 in which the exhaust passage is provided on the lower side, lack the consideration of workability in assembling the electric blower, and the rubber attached to the electric blower part is not provided. There is a possibility that the anti-vibration or airtight interference material may be in a defective state. or,
They also lacked consideration for thermal deformation of each part due to high temperature exhaust of the electric blower.

That is, the one disclosed in Japanese Utility Model Publication No. 55-51407 has a problem that the packing is rubbed and deformed by the inner wall of the main body because the packing is attached to the electric blower and is inserted and incorporated in the radial direction of the electric blower. Further, in the one disclosed in JP-A-62-16730, since the soundproof cylinder is covered in the axial direction of the electric blower and the soundproof cylinder is held vertically in a horizontal state by the support rubber, the weight of the entire soundproof cylinder is reduced. There was a problem that the upper part and the lower part of the supporting rubber were deformed unbalanced due to the vibration applied to the. Therefore, these materials have drawbacks that vibration is increased, airtightness is broken, and there is a risk of thermal deformation in each part due to high temperature exhaust of the electric blower.

An object of the present invention is to address the above-mentioned problems and to sufficiently perform vibration isolation and airtight support of an electric blower,
It is possible to prevent thermal deformation of the sound insulation case when using an electric blower with a large capacity, and it is easy to install it in the main body case of the electric blower, and it is hygienic and compact, low noise and low price electric cleaning. To provide the machine.

[Means for Solving the Problems]

In order to achieve the above object, the electric vacuum cleaner of the present invention is provided with a dust collecting chamber, a communication passage communicating with the dust collecting chamber, and an electric blower storage chamber communicating with the communication passage in a main body case composed of upper and lower cases. And an exhaust passage communicating with this electric blower storage chamber,
A sound deadening path communicating with this exhaust path and an exhaust chamber communicating with this sound deadening path are formed into a sealed compartment, and an electric blower consisting of a blower section and an electric motor section is formed in the electric blower storage chamber, and the blower section side is In an electric vacuum cleaner vertically arranged so as to be on the lower side, a partition wall that partitions the electric blower storage chamber is formed integrally with the main body case, and covers the blower unit side of the electric blower. -Shaped rib and a sound insulating case formed separately from the main body case and covering the electric motor side of the electric blower, and the sound insulating case is formed of a material having higher heat resistance than the main body case. And is detachably attached to the tubular rib, and the communication passage communicates with a lower portion of the tubular rib.
Moreover, in the exhaust passage, the inflow side is formed in the sound insulation case, and the outflow side is formed in the tubular rib,
It is configured to drop along the side wall of the sound insulation case, and the inside of the tubular rib is a rib provided on the lower case to perform airtight vibration isolation of the blower outer peripheral portion of the electric blower. A mounting portion for mounting the first elastic body is provided, and a mounting portion of a second elastic body for vibration-proofing and supporting the electric motor section of the electric blower is formed in the sound insulation case, and the sound deadening path is It is characterized in that it is arranged in a substantially U-shape at the bottom of the main body case, one or more rectifying vanes are provided inside, and a rectifying net is provided on the upstream side of the rectifying vanes.

[Action]

According to the above configuration, even when the exhaust flow flowing out of the electric motor section reaches a high temperature, only the sound insulation case is formed separately from the main body case, and is made of a material having high heat resistance,
In addition to preventing thermal deformation of the sound insulation case, the body case can be made of low-priced ordinary synthetic resin.

Further, when the electric blower is housed vertically with the blower unit facing downward, the mass of the electric blower and the pressing force due to the negative pressure generated by the rotation are applied in the same direction in the entire first elastic body. Therefore, since the first elastic body is pressed against the entire mounting portion by a strong and uniform pressing force, a stable airtight vibration damping effect can be obtained.

Further, since the partition wall of the electric blower storage chamber is formed of a tubular rib provided in the main body case and a sound insulation case separate from the main body case, the sound insulation case is attached to the tubular rib. After assembling the electric blower in the inside, the electric blower can be easily assembled in the electric blower storage chamber simply by attaching and fixing the sound insulation case to the tubular rib.

Further, the noise generated by the rotation of the electric blower is sound-insulated by the double wall of the sound-insulating case and the upper case, and sounds only extremely small above the main body case. Also,
The muffling path using the bottom of the lower case is also U-shaped, so the dimensions can be made longer without increasing the size of the main case. By providing guide vanes for rectification on this U-turn, exhaust The level of the entire frequency range of the sound decreases,
The rectifying net reduces the sound of air flow generated by the protrusions in the flow path.

In addition, air can be discharged to the outside of the main body case through the communication passage-electric blower storage chamber-exhaust passage-silence passage-exhaust chamber without leaking air from the dust collection chamber into the main body case. At the same time, noise reduction is achieved.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 7, a main body case 1 of an electric vacuum cleaner is formed of an upper case 2 and a lower case 3 which can be vertically divided into two parts. Upper case 2 and lower case 3
Is made of synthetic resin. Inside the body case 1, a dust collection chamber 4
And a communication passage 5 communicating with the dust collection chamber 4, and a communication passage 5
To the electric blower storage chamber 6, an exhaust passage 7 communicating with the electric blower storage chamber 6, a muffling passage 8 communicating with the exhaust passage 7, and an exhaust chamber 9 communicating with the muffling passage 8. Has been formed.

The partition wall that divides the electric blower storage chamber 6 is formed integrally with the lower case, and is formed separately from the cylindrical rib 11 that covers the blower unit 10a side of the electric blower 10 and the main body case 1, and is also an electric blower. Sound insulation case 12 covering the electric motor part 10b side of 10
It consists of The sound-insulating case 12 has a groove 12a formed on the entire circumference of the opening end surface thereof airtightly fitted to the entire circumference 11a of the opening end surface of the tubular rib 11, and then detachably attached to the tubular rib 11 by screws 13 and 13a. It is attached.

The dust collection chamber 4 is arranged side by side next to the electric blower storage chamber 6. The communication passage 5 communicates with the lower part of the partition wall of the electric blower storage chamber 6, that is, the lower part of the side wall of the tubular rib 11. The exhaust passage 7 communicates with the lower part of the partition wall of the electric blower housing chamber 6, that is, the upper part of the side wall of the sound insulation case 12.

The inflow side of the exhaust passage 7 is formed integrally with the sound insulation case 12. The exhaust path 7 is falling along the side wall of the sound insulation case. The outflow side of the exhaust passage 7 is formed integrally with a cylindrical rib 11 formed integrally with the lower case 3. Sound insulation case 12
Is formed of a material having higher heat resistance than the upper case 2 and the lower case 3.

The muffling path 8 is formed between the bottom surface of the lower case 3 and the case cover 14 that is hermetically held on the bottom surface. Silence route 8
Has a substantially U shape and communicates with an exhaust chamber 9 arranged at the rear of the main body case 1. A sound absorbing material 15 is attached to the inner surface of the case cover 14. The case cover 14 is made of synthetic resin. The exhaust passage 7 and the muffler passage 8 are communicated with each other through an opening formed in the bottom surface of the lower case 3.

The passage sectional area of the exhaust passage 7 is smaller than the passage sectional area of the sound insulating case 12. The passage cross-sectional area of the muffling passage 8 is larger than the passage cross-sectional area of the exhaust passage 7. The passage sectional area of the exhaust chamber 9 is made larger than the passage sectional area of the muffling passage 8.

A large number of small ribs 16 that prevent large dust such as paper pieces from flowing into the electric blower storage chamber 6 are formed at the entrance of the communication passage 5. A guide rib 17 is provided in the flow path from the communication passage 5 to the electric blower 10 provided in the electric blower storage chamber 6.
Is provided. The guide rib 17 is formed integrally with the case 3 and has a function of smoothly guiding the air from the dust collection chamber 4 toward the inlet of the blower unit 10a of the electric blower 10.

The inner wall of the flow passage from the electric blower storage chamber 6 to the exhaust passage 7 is
The exhaust flow is smoothly flowing. The inner wall of the flow path from the exhaust path 7 to the muffling path 8 has a shape in which the exhaust flow smoothly flows.

Inside the muffler path 8, a plurality of rectifying vanes 18 are provided for changing the direction of the exhaust flow by 180 ° and smoothly guiding it to the exhaust chamber 9. The straightening vanes 18 are formed integrally with the bottom surface of the lower case 3. The upstream side of the straightening vane 18, that is,
A rectifying net 19 is provided on the inflow side of the rectifying vane 18. The straightening net 19 is made of a fine mesh mesh made of a synthetic resin net or a metal net so as to prevent airflow noise from being generated on the inflow side of the straightening vane 18.

The inflow side of the exhaust passage 7 is integrally formed with the sound insulation case 12. The exhaust side of the exhaust path 7 is formed in the tubular rib 11. By attaching the sound insulation case 12 to the tubular rib 11, the exhaust flow from the electric blower storage chamber 6 is suppressed by the sound deadening passage 8.
The exhaust path 7 leading to is completed.

In the electric blower storage chamber 6, the electric blower 10 is vertically arranged so that the blower unit 10a is on the lower side. A mounting portion 21 on which a ring-shaped first elastic body 20 that performs airtight vibration isolation on the blower 10a side of the electric blower 10 is placed is formed on the lower inner periphery of the tubular rib 11. The mounting portion 21 is composed of a ring-shaped rib integrally formed with the lower case 3.

In the sound insulation case 12, a mounting portion 23 to which a second elastic body 22 for vibration-proofing support on the electric motor section 10b side of the electric blower 10 is mounted.
Are formed. The mounting portion 23 has a recess into which the second elastic body 22 can be press-fitted. Both the first elastic body 20 and the second elastic body 22 are made of vibration-proof rubber. A cylindrical sound-absorbing cover 24 is provided on the outer periphery of the electric blower 10 on the electric motor section 10b side.
Is provided. An electric blower 10 is provided on the inflow side of the exhaust passage 7.
Are arranged in the connecting direction on the outer periphery of the electric motor unit 10b. If necessary, a sound absorbing material can be attached to the inner wall of the sound insulation case 12. The second elastic body 22 is attached to the electric blower 10 by being fitted to the outer periphery of the rotary bearing protrusion 10c protruding on the upper surface of the electric motor unit 10b.

A lattice-shaped exhaust window 3a is integrally formed on the rear side wall of the lower case 3. The exhaust window 3a communicates with the exhaust chamber 9. A fine dust filter 25 is attached to the upstream side of the exhaust window 3a so as to be detachable from the outside of the main body case 1.
On the upper surface of the lower case 3, the caster 26 and the two wheels 27, 2
7a is installed.

The body case 1 is completed by fixing the upper case 2 to the lower case 3 with the screws 28. The opening of the upper case 2, that is, the opening of the dust collection chamber 4 is covered with a lid 29. The lid 29 is attached to the upper case 2 so as to be openable and closable. A suction port 30 is formed in the lid 29. A joint 32 of a suction hose 31 is detachably attached to the suction port 30. A handle 33 is attached to the upper surface of the upper case 2.

Inside the dust collection chamber 4, a dust collection case 34 made of non-woven fabric or the like is attached so that it can be attached and detached.
A disposable bag-shaped filter 35 made of a paper bag is housed in the dust collection case 34. When the lid 29 is closed, the inlet of the bag-shaped filter 35 is kept airtight at the suction port 30 of the lid 29.

The suction hose 31 is attached to the lid body 29 by a joint 32 so as to be rotatable by 360 °. Extension tube 3 on suction hose 31
6, the mouthpiece 37 is connected. The lid 29 has an fragrance storage chamber 38 for storing fragrance. Handles for carrying the main body case 3 are formed at the front ends of the upper case 2 and the lower case 3.

A dust collection meter is housed in the upper case 2. Lid
Reference numeral 29 is made of synthetic resin, and is configured to maintain airtightness with the opening of the upper case 2 when closed.
If necessary, a coarse filter can be mounted between the dust collection chamber 4 and the communication passage 5. The dust collection case 34
When the bag-shaped filter 35 is forgotten to be attached, it is required that the bag-shaped filter 35 be formed of a fine filter material so that the bag-shaped filter 35 can be cleaned by itself. The dust collection case 34 can be washed with water when it becomes dirty.

In the electric blower 10, the air flowing from the blower unit 10a is
After cooling the inside of the electric motor unit 10b, the electric motor unit 10b is configured so as to flow out from a window provided on the outer circumference of the electric motor unit 10b in a connecting direction of the outer circumference. A commutator electric mechanism is built in the electric motor section 10b.

Exhaust passage 7 formed by sound insulation case 12 and tubular rib 11
The fin 39a of the circuit board 39 is installed in the. The cord reel storage room 40 is an electric blower storage room 12 in the main body case 1.
Is formed adjacent to. A flat portion 12b is formed on the outer peripheral upper wall of the sound insulation case 12 so that the circuit board 39 can be easily placed thereon. A slit-like hole 12c into which the fin 39a is inserted is formed in the flat portion 12b.

In the above configuration, when the electric blower 10 is rotated, the bag-shaped filter 35 enters from the suction port 30 and the bag-shaped filter 35.
The air that has passed through the dust collecting case 34 flows into the electric blower storage chamber 6 from the communication passage 5 and is smoothly guided into the blower unit 10a by the guide vanes 17. The air flowing out from the blower unit 10a cools the inside of the electric motor unit 10b and then expands and flows out to the outer periphery of the electric motor unit 10b as an exhaust flow. At this time, sounds such as wind noise and ball bearing rotation noise generated from the electric blower 10 are insulated by the sound insulation case 12. The exhaust flow from the electric blower storage chamber 6 is compressed and flows into the exhaust passage 7, drops in the exhaust passage 7, and then expands and flows into the muffling passage 8. The exhaust flow that has flowed out into the muffling passage 8 is divided into a plurality of flows by a plurality of rectifying vanes, and the direction of the exhaust flow is changed by 180 ° to flow out of the main body case 1 through the exhaust window 3a. . The exhaust streams split in the muffling path 8 merge and then expand and flow into the exhaust chamber 9.

The noise generated by the rotation of the electric blower 10 is
It is reduced by repeating expansion and compression while flowing between the exhaust passage 7, the sound deadening passage 8 and the exhaust chamber 9, and is further reduced by the action of the sound absorbing material 15 in the sound deadening passage 8.

The fine dust that has passed through the dust collection case 34 and the fine dust such as brush dust generated by the rotation of the electric blower 10 is transferred from the electric blower housing chamber 6, the exhaust passage 7, the muffler passage 8 and the exhaust chamber 9 to the main body case 1.
It is hygienic because it is filtered by the fine dust filter 25 without leaking inside and outside, and only clean air flows out from the exhaust window 3a and the inside of the main body case 1 is not contaminated.

The noise generated by the rotation of the electric blower 10 is
The sound is blocked by the double wall of 12 and the upper case 3, and it can be heard only very small above the main case 1.

Since the muffling path 8 is formed in a U shape using the bottom surface of the lower case 1, it is easy to make a long one. Even if the silencing path 8 having a long dimension is formed, the body case 1 does not become large.

If a large capacity electric blower 10 is used, and if the dust collection case 34 or the bag-shaped filter 35 is clogged and the amount of cooling air in the electric motor unit 10b decreases,
The exhaust flow flowing out from the electric motor unit 10b has a high temperature. Therefore, the sound insulation case 12 can be heated to a high temperature, but the sound insulation case 12 can be prevented from being thermally deformed by making the sound insulation case 12 with a material having large heat resistance. In this case, since the sound insulation case 12 is formed separately from the main body case 1 and has a structure to be attached to the tubular rib 11, only the sound insulation case 12 is made of a material having high heat resistance. Can be made of low cost ordinary synthetic resin.

When the electric blower 10 is housed vertically in the electric blower storage chamber 6 so that the blower unit 10a is on the lower side, the weight of the electric blower 10 and the rotation of the electric blower 10 in the entire first elastic body 20 are stored. The pressing force due to the negative pressure generated by is applied in the same direction, and the first elastic body 20 is pressed by a strong uniform pressing force over the entire mounting portion 21, so that stable airtightness is achieved. Anti-vibration effect can be obtained.

In order to install the electric blower 10 in the lower case 3, first, the electric blower 10 is preliminarily attached with the first elastic body 20, the second elastic body 22 and the sound absorbing cover 24, and then the electric blower 10 is placed inside the tubular rib 11. And the first elastic body 20 is placed on the placing portion 21. Then, the sound insulation cover 12 is covered over the electric blower 10 and fixed to the tubular rib 11 with the screw 13, so that the electric blower 10 is completely assembled. The electric blower 10 is provided in advance with the first elastic body 20, the second elastic body and the sound absorbing cover 2
The first of the mounting portions 21 in the tubular rib 11 without mounting the first
After the elastic body 20 is placed and the electric blower 10 is placed on the first elastic body 20, the sound absorbing cover 24 and the second elastic body 22 are attached to the electric blower 10, and the sound insulating cover 12 is placed on the sound absorbing cover 24. It is also possible to cover.

FIG. 8 is a frequency characteristic diagram showing the sound deadening effect of the sound insulation case 12 according to the present embodiment. The measurement position is above the upper case 2.
I went in 1m. The graph a shows the conventional example, and the graph b shows the present embodiment. As can be understood from this characteristic diagram, according to the present embodiment, the silencing effect is significantly improved as compared with the conventional example.

In the present embodiment, the communication passage 5 is shortened, but it may be longer, or conversely, it may be only a simple hole that connects the dust collection chamber 4 and the electric blower storage chamber 6. Further, by using an electric blower with a small capacity, when the rotating noise of the electric blower is low, the muffler passage 8 may be deleted and the exhaust passage 7 may be directly communicated with the exhaust chamber 9.

In the present embodiment, air is taken from the dust collection chamber through the communication passage 5-electric blower storage chamber 6-exhaust chamber 7-silence passage 8-exhaust chamber 9.
Since it can be discharged from the exhaust window 3a to the outside of the main body case 1 without leaking it into the main body case 1, by providing the fine dust filter 25 in front of the exhaust window 3a, of course fine dust flowing from the dust collection chamber can be obtained. That is, fine dust such as brush powder generated from the electric blower can be reliably removed, and a more hygienic cleaning operation can be performed.

〔The invention's effect〕

As described above, according to the present invention, the following effects can be obtained.

(A) Use an electric blower with a large capacity,
Moreover, when the amount of cooling air in the electric motor unit decreases due to clogging of the dust collection case or the bag-shaped filter, the exhaust flow flowing out from the electric motor unit has a high temperature. Therefore, the sound insulation case can be heated to a high temperature, but by making the sound insulation case with a material having a large heat resistance, thermal deformation of the sound insulation case can be prevented. In this case, the sound insulation case
Since it is formed separately from the main body case and has a structure to be attached to the cylindrical rib, only the sound insulation case can be made of a material with high heat resistance, and the main body case can be made of low-priced ordinary synthetic resin. it can.

(B) When the electric blower is placed vertically with the blower section facing downward and stored in the electric blower storage chamber, the mass of the electric blower over the entire first elastic body and the load generated by the rotation of the electric blower Since the pressing force due to the pressure is applied in the same direction, and the first elastic body is pressed by a strong and uniform pressing force over the entire mounting portion, a stable airtight vibration damping effect can be obtained. .

(C) The partition wall of the electric blower storage chamber is formed of a tubular rib provided on the main body case and a sound insulation case that is separate from the main body case, and the sound insulation case is attached to the tubular rib. After installing the electric blower in the rib and then attaching and fixing the sound insulation case to the tubular rib, the electric blower can be easily assembled in the electric blower storage chamber.

(D) The noise generated by the rotation of the electric blower is shielded by the double wall of the sound insulation case and the upper case, and it is heard as only extremely small above the main body case.

(E) The silencer can be made to have a long U-shaped dimension by utilizing the bottom surface of the lower case, and the main body case does not become large. By providing the guide vanes for rectification in the U-turn portion, the level of the exhaust sound in the entire frequency range is lowered, and the rectifying net reduces the sound of air flow generated by the projections in the flow path.

(F) Air from the dust collection chamber, communication passage-electric blower storage room-
Since it can be discharged from the exhaust chamber to the outside of the main body case through the exhaust passage-silence passage-exhaust chamber without leaking into the main body case, it is hygienic and noise is reduced.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a longitudinal sectional view of an essential part, Fig. 2 is an overall perspective view, Fig. 3 is an exploded perspective view of an essential part of a lower case side, and Fig. 4 is a lower case. 5 is an exploded perspective view of the back side portion of FIG. 5, FIG. 5 is a perspective view of the upper case, FIG. 6 is a cross-sectional view of the sound insulating case portion, and FIG. 7 is a cross-sectional view of the sound deadening portion of the lower case.
The figure is a frequency characteristic diagram showing the silencing effect. 1 ... Main body case, 2 ... Upper case, 3 ... Lower case,
4 ... Dust collection chamber, 5 ... Communication passage, 6 ... Electric blower storage chamber, 7 ... Exhaust passage, 8 ... Silence passage, 9 ... Exhaust chamber, 11 ...
… Cylindrical ribs, 12 …… Sound insulation case.

Continuation of front page (56) References JP-A-61-115529 (JP, A) JP-A-62-167030 (JP, A) JP-B-55-51407 (JP, Y2)

Claims (9)

[Claims] 1. A dust collection chamber, a communication passage communicating with the dust collection chamber, an electric blower storage chamber communicating with the communication passage, and a communication with the electric blower storage chamber. An exhaust passage, a sound deadening passage communicating with this exhaust passage, and an exhaust chamber communicating with this sound deadening passage are formed into a sealed compartment,
An electric vacuum cleaner in which an electric blower composed of a blower unit and an electric motor unit is vertically arranged with the blower unit side facing downward in the electric blower storage chamber, wherein a partition wall defining the electric blower storage chamber is provided. A tubular rib formed integrally with the main body case and covering the blower section side of the electric blower; and a sound insulation case formed separately from the main body case and covering the electric blower section side of the electric blower. The sound insulation case is made of a material having heat resistance higher than that of the main body case, and is detachably attached to the tubular rib, and the communication passage is formed in a lower portion of the tubular rib. In addition, the exhaust passage is formed such that the inflow side is formed in the sound insulation case and the outflow side is formed in the tubular rib so as to fall along the side wall of the sound insulation case. Cylinder Inside the rib, there is provided a mounting portion for mounting the first elastic body for airtight vibration isolation of the blower outer peripheral portion of the electric blower, the mounting portion being formed of the rib provided in the lower case, A mounting portion of a second elastic body for vibration-proofing and supporting the electric motor portion of the electric blower is formed in the case, and the sound deadening path is arranged in a substantially U shape at the bottom of the main body case, and one is provided inside. An electric vacuum cleaner comprising the above-mentioned flow straightening vane and a flow straightening net provided on the upstream side of the flow straightening vane. 2. A tangential direction on the electric motor side of the electric blower,
The vacuum cleaner according to claim 1, wherein an inflow side of the exhaust passage is arranged. 3. The electric vacuum cleaner according to claim 1, wherein a passage blocking area of the exhaust passage is smaller than a passage sectional area of the sound insulating case. 4. The sound deadening path is provided on the bottom surface of the main body case,
The vacuum cleaner according to claim 1, wherein the vacuum cleaner is formed between the case cover and the case cover provided on the bottom surface. 5. The vacuum cleaner according to claim 1, wherein the passage cross-sectional area of the exhaust chamber is larger than the passage cross-sectional area of the muffling passage. 6. The vacuum cleaner according to claim 1, wherein a cross-sectional area of the muffler passage is larger than a cross-sectional area of the exhaust passage. 7. The first elastic body is mounted on the mounting portion, the electric blower is mounted on the first elastic body, and the electric motor side of the electric blower is covered with a sound absorbing material. The vacuum cleaner according to claim 1, wherein the sound insulation case is screwed to the tubular rib. 8. The electric vacuum cleaner according to claim 7, wherein the second elastic body is mounted in advance on the upper surface of the electric blower on the electric motor side. 9. The electric blower, the soundproof material, the first
The electric vacuum blower according to claim 1, wherein the electric blower is mounted on the mounting portion while the elastic body and the second elastic body are mounted in advance.