JP2002330901A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of preventing blowing away dust on a floor surface. SOLUTION: In the vacuum cleaner provided with a cleaner body 11 having wheels 100 mounted at both of sidewalls 20A, a dust collecting chamber formed within this cleaner body 11, an electric blower for sucking air within this dust collecting chamber, a circulation air duct for circulating the air exhausted from this electric blower to a suction port body and exhaust holes 83 and 84 formed at the sidewall parts 20A opposing the wheels 100 to exhaust a part of the air exhausted to the circulation air duct from the holes 83 and 84, ribs 86 extending forward and backward are formed under the holes 83 and 84 on the outside surface of the sidewalls 20A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner which circulates air sucked from a dust collection chamber to a suction port and exhausts a part of the sucked air to the outside.

[0002]

2. Description of the Related Art Conventionally, a main body case having wheels mounted on both side walls, a dust collection chamber formed in the main body case,
An electric blower that sucks air from the dust collection chamber and exhausts the air to the outside of the dust collection chamber, a circulation air path that circulates the air exhausted by the electric blower to a suction port body, and is formed on the side wall portion facing the wheel. There is known an electric vacuum cleaner having an exhaust hole and exhausting a part of the air exhausted to the circulation air passage from the exhaust hole.

In such a vacuum cleaner, since the exhaust hole is provided in the side wall, air is not directly exhausted rearward from the rear surface of the main body case.

[0004]

However, since the wheel is located at a position facing the exhaust hole, air is exhausted downward from the gap between the wheel and the side wall, and dust on the floor surface is removed. There was a problem of blowing away.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vacuum cleaner capable of preventing dust on a floor from being blown off.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, a first aspect of the present invention is directed to a main body having wheels mounted on both side walls, a dust collection chamber formed in the main body, and a dust collection chamber. An electric blower for sucking indoor air, a circulating air path for circulating air exhausted from the electric blower to a suction opening body, and an exhaust port formed in the side wall portion facing the wheel, In a vacuum cleaner for exhausting a part of air exhausted to an air passage from an exhaust port, a first rib extending in a front-rear direction is formed below the exhaust port on an outer surface of the side wall. I do.

According to a second aspect of the present invention, the wheel includes an axle rotatably provided on the side wall portion, a disk portion provided at an end of the outer axle, and an outer peripheral edge of the disk portion. A flange portion that is formed and protrudes inward from the outer peripheral edge thereof, and a second rib that extends along the disk portion and enters the inside of the flange portion is provided on the side wall portion.

The invention according to claim 3 is characterized in that a third rib extending vertically is provided at an intermediate position in the front-rear direction of the exhaust port.

According to a fourth aspect of the present invention, a fourth rib extending vertically is provided at a position behind the exhaust port.

According to a fifth aspect of the present invention, the exhaust port is formed on both side walls of the main body, an electric blower is disposed on one side wall side, and a code reel is disposed on the other side wall side. A first silencer is attached to the exhaust port on the side, and a second silencer that is more permeable than the first silencer is attached to the exhaust port on the other side wall.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a vacuum cleaner according to the present invention will be described with reference to the drawings.

A vacuum cleaner 10 shown in FIG. 1 includes a cleaner body 11, a hose 13 having one end detachably connected to the cleaner body 11, and a hand-operated operation provided at the other end of the hose body 13. A suction port 16 detachably connected via an extension pipe 15 detachably connected to the portion 14.

The operation panel 14A of the hand operation unit 14 is provided with a plurality of switches for setting and turning off the power of the electric blower 60 described later.

The hose body 13 has a double structure. The inner inner hose 13A (see FIG. 4) forms a suction air passage for sucking dust, and the outer outer hose 13B is connected to the cleaner main body 1.
An exhaust air path for guiding the air exhausted from 1 to the suction port body 16 is formed. Similarly, the extension pipe 15 also has a double structure, and an inner inner pipe (not shown) forms a suction air passage for sucking dust and is connected to the inner hose 13A. The outer outer tube 15B forms an exhaust air path for guiding the air exhausted from the cleaner body 11 to the suction opening body 16, and communicates with the outer hose 13B.

A suction chamber (not shown) having a suction opening (not shown) formed on the lower surface and an air outlet (not shown) for discharging circulated air to the suction chamber are provided in the suction port body 16. No exhaust chamber is provided. The suction chamber communicates with the inner pipe of the extension pipe 15, and the exhaust chamber and the outer pipe 1 of the extension pipe 15 are connected.
5B.

As shown in FIGS. 2 and 3, the cleaner main body 11 includes a main body case 20 and a lid case 55 mounted on the main body case 20. Lid case 55
Is mounted so that it can rotate around the rear,
It opens and closes by this rotation.

As shown in FIG. 4, a dust collecting chamber 21 is formed on the front side of the main body case 20.
1 has an opening (not shown), and this opening is
5 closed. Further, a dust collecting filter F is detachably mounted in the dust collecting chamber 21.

In the main body case 20, a dust collecting chamber 21 is provided.
A storage case 30 in which an electric blower 60 is stored behind,
An exhaust air path case 90 covering the storage case 30 and a code reel 70 are provided. Exhaust air path case 9
The space formed by the main body case 0 and the main body case 20 is an exhaust chamber 71.

The storage case 30 is sealed by a vibration isolating rubber 31 mounted on the front end side of the electric blower 60. The partition wall 27 that divides the dust collecting chamber 21 is formed in a lattice shape. A rectifying plate 50 is provided behind the partition wall 27, and an opening 51 is formed at a substantially central portion of the rectifying plate 50.

The electric blower 60 is provided with an opening 51 of the current plate 50.
The air sucked from the dust collection chamber 21 through the
1 is discharged into the storage case 30 from an opening (not shown). A hole 31 is formed at the rear end of the storage case 30, and a space between the exhaust air path case 90 and the storage case 30 serves as an exhaust air path (circulation air path) 91. The air discharged into the storage case 30 is discharged from the hole 31 to the exhaust air passage 91.

An exhaust hole 93 is formed in the rear wall surface of the step portion of the exhaust air passage case 90 as shown in FIG.
A part of the air discharged into the inside is exhausted from the exhaust hole 93 to the exhaust chamber 71.

One end of a circulation air duct 25 having a circulation air duct is connected to the side of the exhaust air duct case 90 so that the air discharged to the exhaust air duct 91 is sent into the circulation air duct 25. It has become. The other end of the circulation air duct 25 is connected to a large-diameter pipe 41 described later.

On the other hand, a connection port 40 (see FIG. 4) to which one end of the hose body 13 is connected is provided at a front portion of the main body case 20. The connection port 40 has a large-diameter pipe 41 and a small-diameter pipe 42 communicating with the dust collection chamber 21. Connection port 4
When one end of the hose body 13 is connected to 0, the inner hose 13A of the hose 13 is connected to the small diameter pipe 42, and the outer hose 13B of the hose body 13 is connected to the large diameter pipe 41. And
The inner hose 13A communicates with the dust collection chamber 21 and the outer hose 13
B and the circulation air duct 25 communicate with each other.

Both side walls 20A, 20B of the main body case 20
A substantially circular concave portion 80 for mounting the wheel 100 is formed in the rear portion as shown in FIG.
A plurality of slit-shaped exhaust holes 81 are formed radially from the peripheral edge of the concave portion 80 in the side wall portion above.

The center of the recess 80 has a wheel 100
A cylindrical bearing portion 82 for rotatably holding the shaft portion 101 (see FIG. 5) is formed, and the bearing portion 82 of the concave portion 80 is formed.
6, a plurality of slit-shaped exhaust holes 83 extending in the front-rear direction are formed as shown in FIG. The plurality of exhaust holes 83 are vertically arranged. Also, the exhaust holes 83
A plurality of similar exhaust holes 84 are formed on the front side, and the exhaust hole 83 and the exhaust hole 84 form an exhaust port.

In FIG. 5, the right exhaust hole 83,
A sound-absorbing material having poor air permeability (first sound-absorbing material) 95 is provided inside 84.
Is attached. This silencer 95 is made of, for example, felt. On the other hand, a sound-absorbing sound-absorbing material (second
A silencer 96 is attached. This sound deadening material 96 is made of, for example, urethane. Note that the silencer 95 may be urethane or the like as long as the thickness is increased.

A vertically extending rib (third rib) 85 is formed between the plurality of exhaust holes 83 and the exhaust holes 84.

A rib 86 (first rib) extending in the front-rear direction is formed between the exhaust holes 83, 84 and the bearing portion 82. The rib 86 is composed of an arcuate rib portion 86A and an arcuate rib portion 86A. Before and after 86A, inclined rib portions 86B and 86C inclined upward are formed. The lower part of the rib 85 is connected to the arc rib 86A.

An arc-shaped rib (second rib) 87 is formed below the bearing portion 82, and a front portion 8 of the rib 87 is formed.
7A extends vertically to the upper position of the bearing portion 82.
The rear portion 87B of the rib 87 extends to a position substantially at the center of the bearing portion 82.

The wheel 100 has a cylindrical shaft portion 101, a disk portion 102 formed at one end of the shaft portion 101 on the outside,
Flange part 1 protruding inward on the periphery of this disk part 102
03 and the tire 1 mounted on the flange 103
04. And the shaft part 101 of the wheel 100
Are rotatably mounted on a bearing portion 82 of a concave portion 80 of the main body case 20, and a rib 87 of the main body case 20 is
0 along the flange 103 at the bottom and into the inside of the flange 103.

Next, the operation of the vacuum cleaner of the above embodiment will be described.

First, as shown in FIG.
The hose 13 is connected to the connection port 40 of the
The extension pipe 15 is connected to the hand operation unit 14 of the above, and the suction port body 16 is connected to the tip of the extension pipe 15. When one end of the hose 13 is connected to the connection port 40 of the cleaner body 11, the inner pipe 42 of the connection port 40 is connected to the inner hose 13A of the hose body 13 as shown in FIG. Is connected to the outer hose 13B of the hose body 13, and the inner hose 13A is connected to the inner tube 4
The outer hose 13 </ b> B communicates with the exhaust air duct 25 via the outer pipe 41.

When the electric blower 60 is driven by operating the operation switch provided on the hand operation unit 14, the dust collection chamber 21 becomes a negative pressure and the inner hose 1 of the hose body 13 becomes negative.
3A and the suction port body 1 through the inner pipe 15A of the extension pipe 15.
The suction chamber 6 has a negative pressure. Due to the negative pressure, air is sucked from the suction chamber, and dust is sucked together with the air. Dust sucked from the suction chamber is transferred to the inner pipe 15 of the extension pipe 15.
A is sucked into the dust collection chamber 21 through the hose A and the inner hose 13A of the hose body 13. The dust sucked into the dust collection chamber 21 is collected by the dust collection filter F.

The air sucked into the dust collecting chamber 21 is sucked into the electric blower 60 through a secondary filter (not shown) provided behind the dust collecting filter F and the opening 51 of the rectifying plate 50. . The air taken into the electric blower 60 passes through a motor (not shown) of the electric blower 60 and is discharged from an opening (not shown) of the motor case 61. The discharged air is further discharged from the hole 31 of the storage case 30 to the exhaust air passage 91. The air discharged to the exhaust air passage 91 is exhausted into the circulation air passage tube 25.

The air exhausted into the circulation duct 25 is supplied to the outer pipe 41, the outer hose 13B and the extension pipe 1 of the connection port 40.
5 is circulated to the exhaust chamber of the suction port body 16 via the outer pipe 15B. The air circulated in the exhaust chamber of the suction port body 16 is blown out from the outlet into the suction chamber. In this way, the air sucked from the suction chamber of the suction port body 16 circulates.

On the other hand, a part of the air discharged into the exhaust air passage 91 is discharged from the exhaust hole 93 of the exhaust air passage case 90 into the exhaust
It is exhausted to. The air exhausted to the exhaust chamber 71 is exhausted to the outside through the exhaust hole 81 and the sound deadening material 9.
The air is exhausted from the exhaust holes 83 and 84 to the outside through the holes 5 and 96.

The air exhausted from the exhaust holes 83 and 84 is
Although the wheels 100 are opposed to the exhaust holes 83 and 84, the wheels 86 are provided below the exhaust holes 83 and 84, so that the wheels 100 are prevented from going downward. For this reason, the amount of air discharged downward (from the floor surface) from between the lower portion of the wheel 100 and the lower portion of the concave portion 80 of the main body case 20 can be reduced, thereby preventing dust on the floor surface from being rolled up. can do. In addition, the flange portion 103 at the lower part of the wheel 100
The ribs 87 are provided along the inside of the flange portion 103 and along the inside of the flange portion 103, whereby the amount of air discharged toward the floor surface can be further reduced, and it is ensured that dust on the floor surface is rolled up. Can be prevented.

Further, since the rib 85 is provided behind the exhaust hole 84, the air exhausted from the exhaust hole 84 is suppressed from going rearward by the rib 85. For this reason, the rear portion of the wheel 100 and the recess 80
It is possible to reduce the amount of air that is exhausted rearward from between the rear part and the exhaust air that is directly applied to the human body, thereby preventing disgust. Further, the inclined rib portion 86C of the rib 86
By providing the rear portion 87B of the ribs 87 and the rear portion 87B, the amount of air exhausted rearward can be further reduced, and the exhaust air directly hitting the human body can be reduced as much as possible.

By the way, the exhaust hole 9 of the exhaust air passage case 90
A sound-absorbing material 95 with poor air permeability is attached to the inside of the exhaust holes 83 and 84 on the right side (in FIG. 5) close to the exhaust hole 93. Since a sound-absorbing sound-absorbing material 96 with good air permeability is attached to the inside of 83 and 84, that is, a sound-absorbing sound-absorbing material 95 with low airflow resistance is attached, and a gas-permeable noise-absorbing material 95 is installed with high airflow resistance Good sound deadening material 96
, A uniform exhaust balance can be secured as a whole.

FIG. 7 shows a cleaner main body 11 according to a second embodiment. In this second embodiment, a rib 88 is formed behind an exhaust hole 83. The ribs 88 can further reduce the amount of air discharged rearward.

[0041]

As described above, according to the first aspect of the present invention, a main body having wheels mounted on both side walls, a dust collecting chamber formed in the main body, and air in the dust collecting chamber. An air blower that sucks air, a circulation air path that circulates air exhausted from the electric blower to a suction port body, and an exhaust port formed in the side wall portion facing the wheel. In a vacuum cleaner for exhausting a part of the exhausted air from the exhaust port, a first rib extending in the front-rear direction is formed below the exhaust port on the outer surface of the side wall portion. The air that is exhausted from is prevented from going downward by the first ribs, and therefore, it is possible to prevent the dust on the floor from rolling up.

According to the second aspect of the invention, the wheel includes an axle rotatably provided on the side wall portion, a disk portion provided at the tip of the outer axle, and an outer peripheral edge of the disk portion. And a flange portion protruding inward from the outer peripheral edge thereof, and the second rib provided along the disk portion and inside the flange portion is provided on the side wall portion. The amount of air discharged toward the floor can be further reduced, and the dust on the floor can be reliably prevented from rolling up.

According to the third aspect of the present invention, since the third rib extending in the vertical direction is provided at an intermediate position in the front-rear direction of the exhaust port, the air exhausted from the exhaust port is supplied by the third rib. Going backward is suppressed. For this reason,
The amount of air exhausted rearward from between the rear part of the wheel and the rear part of the side wall part of the main body can be reduced, and the exhaust air directly hitting the human body can be weakened, resulting in disgust Can be prevented.

According to the fourth aspect of the present invention, since the fourth rib extending in the vertical direction is provided at the rear position of the exhaust port, the amount of air exhausted rearward can be further reduced, and the human body It is possible to further reduce the exhaust wind that is directly applied to the vehicle, and it is possible to reliably prevent the disgust.

According to the fifth aspect of the present invention, the exhaust port is formed on both side walls of the main body, the electric blower is arranged on one side wall side, and the code reel is arranged on the other side wall side. The first silencer is attached to the exhaust port on the side, and the second silencer that is more permeable than the first silencer is attached to the exhaust port on the other side wall, so that an even exhaust balance is secured as a whole. can do.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a vacuum cleaner according to the present invention.

FIG. 2 is a perspective view showing the cleaner body shown in FIG. 1;

FIG. 3 is a perspective view showing a state in which wheels are removed from the cleaner body of FIG. 2;

FIG. 4 is a vertical cross-sectional view schematically showing a configuration of a cleaner main body.

FIG. 5 is a cross-sectional view showing the cleaner body.

FIG. 6 is an enlarged perspective view showing the waist of the cleaner body.

FIG. 7 is a perspective view showing a cleaner body according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Vacuum cleaner main body 20A Side wall part 83 Exhaust hole (exhaust port) 84 Exhaust hole (exhaust port) 86 Rib (1st rib) 100 Wheel

Claims (5)

[Claims] 1. A main body having wheels mounted on both side walls, a dust collecting chamber formed in the main body, an electric blower for sucking air in the dust collecting chamber, and air exhausted from the electric blower. A circulation air path for circulating air to the suction port body, and an exhaust port formed in the side wall portion facing the wheel, and electricity for exhausting a part of the air exhausted to the circulation air path from the exhaust port. In the vacuum cleaner, a first rib extending in a front-rear direction is formed below the exhaust port on an outer surface of the side wall portion. 2. The wheel is formed on an axle rotatably provided on the side wall portion, a disk portion provided at the tip of the axle on the outside, and formed on an outer peripheral edge of the disk portion. The flange according to claim 1, further comprising a flange protruding inward from an outer peripheral edge, wherein a second rib is provided on the side wall along the disk portion and inside the flange. Vacuum cleaner. 3. A third rib extending in the vertical direction is provided at an intermediate position of the exhaust port in the front-rear direction.
Or the vacuum cleaner according to claim 2. 4. The vacuum cleaner according to claim 1, wherein a fourth rib extending vertically is provided at a position behind the exhaust port. 5. The exhaust port is formed on both side walls of the main body,
An electric blower is arranged on one side wall side, a code reel is arranged on the other side wall side, a first silencer is attached to an exhaust port on one side wall side, and a first silencer is installed on an exhaust port on the other side wall side. The vacuum cleaner according to any one of claims 1 to 4, further comprising a second sound deadening material having better ventilation than the material.