JPH026902Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a vacuum cleaner in which an electric blower is supported within the main body case.

[Conventional technology]

Generally, in vacuum cleaners, the main body case is formed from plastic, and an electric blower is supported within this main body case.
As shown in Japanese Patent No. 53-46386, the electric blower is supported by a single support wall formed integrally within the main body case, and the noise reduction mechanism around it is also insufficient.

[Problem that the invention attempts to solve]

Such a conventional structure not only fails to sufficiently prevent noise, but also is not easy to assemble.

The present invention aims to eliminate these drawbacks.

[Means to solve the problem]

In order to achieve the above object, the present invention
In a vacuum cleaner in which an electric blower 26 is arranged in a rear case 7 of a main body case 1 having an exhaust port 5,
A rear support wall 32 that supports the rear part of the electric blower 26
, a blower room 23 , an exhaust room 24 , and a partition wall 22
and a sound deadening wall 36 that rises above the partition wall 22 and divides the exhaust chamber 24 into a reverse concave shape, and the support wall 32 forms a boundary wall between the blower chamber 23 and the exhaust chamber 24. The sound deadening wall 36 forms sound deadening passages 37 and 38 between the rear support wall 32 and the exhaust port 5, respectively, a sound deadening material is attached to the sound deadening wall 36, and an electric blower 26 is installed on the inner wall of the rear case 7. To provide a vacuum cleaner characterized in that a movement prevention wall 34 is formed and a sound absorbing sheet 35 is held by the movement prevention wall 34.

〔Example〕

An embodiment of the vacuum cleaner of this invention will be described with reference to the drawings.

Figure 1 is a side view of a vacuum cleaner, Figure 2 is a cross-sectional view of a rear case of a vacuum cleaner according to an embodiment of this invention, and Figure 3 is a rear case of a vacuum cleaner according to an embodiment of this invention. 4 is a sectional view of the right case of the rear case of an embodiment of this invention, FIG. 5 is a perspective view of a sound absorbing sheet of an embodiment of this invention, and FIG. 6 is a diagram of FIG. A perspective view of the upper safety valve, FIG. 7 is an enlarged view of the main part on the upper left of FIG. 2, FIG. 8 is a perspective view of the compartment located below FIG. 7, and FIG. FIG. 2 is an enlarged perspective view of a conductive plate.

In the figure, 1 is a main body case which includes a dust collection case 3 having an inlet, and a rear case 7 which detachably supports this dust collection case with a latch 4, has an exhaust port 5 at the rear end, and a handle 6 at the upper part. The rear case 7 is divided into a pair of left and right cases 7A,
It is composed of 7B. 8 is a filter for capturing dust, which is housed in the dust collection case 3. 9,
9 is inserted and supported in the front upper part of the left case 7A of the rear case 7, and is connected to a pin (not shown) of the dust collection case 3.
10 is a safety valve (see FIG. 6) held above the left and right cases 7A, 7B, and has a suction hole 1 at one end.
The other end of the pipe 11 having 2 is formed in the shape of a square,
It is constructed by connecting a ventilation pipe 15 made of a soft material having an exhaust hole 13 and a lid 14 to its lower end, and when the intake side of an electric blower 26 (described later) reaches a predetermined negative pressure, outside air flows in through the intake hole 12, and the communication pipe 15 is connected to the ventilation pipe 15, which will be described later. Mouth 2
The electric blower 26 is air-cooled through the air blower 1.

Reference numeral 16 denotes a reinforcing rib formed on the outer wall of the ventilation pipe 15, which prevents the ventilation pipe 15 from being deformed when the inside of the ventilation pipe 15 becomes negative pressure, and also holds down the conductive plates 9, 9. This prevents it from floating up. 17 is a compartment (see Figure 8)
The communication port 18 is on one side, and the ventilation pipe 1 is on the upper side.
a pressing wall (not shown) having the same shape as the opening surface 20, the opening surface 20 of which is covered by the lid 14, and the entire circumference of the lid 14 is located on the right case 7B; is pressing.

21 is an intake port provided on one side of the rear case 7;
The rear case 7 is placed above the blower chamber 23 and the exhaust chamber 2.
4. Partition walls forming cord storage chambers 25 on the lower side. 26 is the front fan (not shown)
This is an electric blower comprised of a blower section 27 containing a blower and a motor section 28 that rotates the fan at the rear, and is housed in the blower room 23.

A front support rubber 29 is provided on the outer periphery of the blower portion 27 of this electric blower, a rear support rubber 30 is provided on the rear end of the motor portion 28, and a noise-deadening urethane 31 is provided on the outer periphery.

32 is a rear support wall that supports the rear part of the electric blower 26, and also serves as a boundary wall between the blower chamber 23 and the exhaust chamber 24, and its lower end forms an intermediate ventilation opening 33 between it and the partition wall 22. , the blower chamber 23 and the exhaust chamber 24 are communicated with each other. 34 is the blower room 2
The movement prevention wall provided near the blower part 27 of the electric blower 26 of No. 3 (see Fig. 4), should the main body case 1
If it is dropped from the exhaust port 5 side, the electric blower 26
This is to prevent the impact from being applied to the rear support wall 32 and bending this wall.
7B respectively.

Reference numeral 35 denotes a sheet of sound absorbing material (see FIG. 5) stored along the inner wall of the blower chamber 23, and has a cut groove 35A on one side, and as shown in FIG. The movement prevention wall 34 enters, and the entire seat 35 moves during assembly, causing the left and right cases 7 to move.
A, 7B to prevent a gap from forming between the left and right cases 7A, 7B.

Reference numeral 36 denotes a sound deadening wall that rises above the partition wall 22 and separates the exhaust chamber 24 into an inverted concave shape, and includes a sound deadening passage A37 having a predetermined gap between the rear support wall 32 and the exhaust port 5, respectively. A passage B is formed. 39 is an intermediate sound deadening material attached to the rear support wall 32 side of this sound dead wall 36, and 40 is a sound deadening passage B3.
Exhaust urethane foam covering the exhaust port 5 within 8, 4
1 is the muffling passage A37 and the muffling passage B3 of the exhaust chamber 24.
8, the exhaust urethane foam 39 is pressed and fixed at one end, and the other end is a bent urethane foam supported in a recess 43 formed in the rear support wall 32.

Reference numeral 44 denotes a sound deadening material attached to the sound deadening wall 36 of the sound deadening passage B38. Reference numeral 45 denotes a connector storage chamber which communicates with the blower chamber 23 above the exhaust chamber 24, and stores connectors 47 for connecting each lead wire 46, and prevents these connectors 47 from coming into contact with the electric blower 26 or the like, causing electrical trouble. It prevents you from doing so.

Numeral 48 is a screw boss for fixing the left and right cases 7A, 7B, and is formed in the connector storage chamber 45 to prevent the connector 47 from moving. 4
8 is a cord winding device stored in the cord storage chamber 25, and 50 is a relay that also serves as a transformer attached near the handle 6.

In the above configuration, when the electric blower 26 is operated, the electric blower 26 rotates at a high speed, generates noise as it rotates, sucks in outside air containing dust from the suction port 2, and causes the filter 8 to catch the dust. Only clean air passes through the electric blower 26 via the communication port 21. At this time, the noise also moves with the airflow, but is absorbed by the sound-absorbing sheet 35 provided on the inner wall of the blower chamber 23 and is discharged from the intermediate ventilation port 33 into the exhaust chamber 14 . The clean air containing noise discharged into the exhaust chamber 24 rises in the sound deadening passage A37 formed by the rear support wall 32 and the sound deadening wall 36, but at this time, the middle sound deadening material 3
The bent urethane foam 41 is air-cooled over almost the entire rear support wall 32, which is sound-absorbed by the electric blower 9 and has become hot due to the high heat generated by the electric blower 26.
collides with the object and attenuates its energy.

Furthermore, this time it begins to descend and enters the sound-deadening passage B38, passing through the exhaust urethane foam 40 and the rear sound-deadening material 44.
The quiet air is discharged from the exhaust port 5 while being absorbed by the air.

Also, the noise-muffling sheet 35 stored on the wall of the blower room 23 during assembly moves when storing the electric blower 26, etc., and its end surface is attached to the left and right cases 7A, 7.
However, there were problems such as a gap being created between the left and right cases 7A and 7B, causing exhaust leakage.
According to this embodiment, the movement prevention wall 34 that prevents movement of the electric blower 26 caused by falling of the main body etc. is located in the cut groove 36 of the sheet 35, so that movement of the sheet 35 and the electric blower 26 is simultaneously prevented. can do.

Furthermore, since a connector storage chamber 45 is provided to house a connector 47 that connects lead wires 46 that electrically connect each electrical component, the connector 47 does not move during assembly and come into contact with each electrical component. ,
It is not pinched by the left and right cases 7A and 7B. Furthermore, in the event that the filter 8 or the like is clogged and the air flow is extremely reduced, the intake side of the electric blower 26 becomes negative pressure, the safety valve 10 performs its function, and the electric blower 26 is air-cooled. At this time, the inside of the ventilation pipe 15 becomes a negative pressure and tends to be inwardly deformed, but the reinforcing ribs 16 prevent this deformation. In addition, in order to prevent the conductive plates 9, 9 inserted and supported by the left case 7A from lifting up, the reinforcing ribs also operate when they come into contact with pins (not shown) attached to the dust collection case 3 side. It will definitely be done.

[Effect of idea]

With the above-described configuration, the present invention has the effect of sufficiently preventing noise even with a simple structure and being easy to assemble.Furthermore, the electric blower is mounted on the inner wall of the rear case. By forming a movement prevention wall that prevents the movement, in the event that the main body case falls, the entire impact load applied to the rear support wall can be dispersed and received by the movement prevention wall, and the rear support Since damage to the wall can be prevented and the movement of the sound absorbing sheet is prevented by the movement prevention wall, the ease of assembly can be further improved.

[Brief explanation of drawings]

Fig. 1 is a side view of a vacuum cleaner showing an embodiment of this invention, Fig. 2 is a cross-sectional view of the rear case, Fig. 3 is a longitudinal sectional view of the rear case, and Fig. 4 is a sectional view of the right case. , Figure 5 is a perspective view of the sound-absorbing sheet, Figure 6 is a perspective view of the safety valve, Figure 7 is an enlarged view of the main part of Figure 2, Figure 8 is a perspective view of the compartment, and Figure 9 is the conductive plate. A perspective view of the figure is shown. 1 is a main body case, 5 is an exhaust port, 26 is an electric blower, 34 is a movement prevention wall, 35 is a sound absorbing sheet, 3
6 is a kerf. The same reference numerals in the figures indicate the same parts.

Claims (1)

[Scope of utility model registration request] In a vacuum cleaner in which an electric blower 26 is arranged in a rear case 7 of a main body case 1 having an intake port 2 and an exhaust port 5, a rear support wall 32 that supports the rear part of the electric blower 26, a blower chamber 23, and an exhaust chamber 24 are provided. , a partition wall 22, and a sound deadening wall 3 that rises above the partition wall 22 and divides the exhaust chamber 24 into a reverse concave shape.
6, the supporting wall 32 forms a boundary wall between the blower chamber 23 and the exhaust chamber 24, and the sound deadening wall 36 has a sound deadening passage 37 between the rear supporting wall 32 and the exhaust port 5, respectively. and 38, a sound deadening material is attached to the sound deadening wall 36, and the rear case 7
A vacuum cleaner characterized in that a movement prevention wall 34 of an electric blower 26 is formed on an inner wall, and a sound absorbing sheet 35 is held by this movement prevention wall 34.