JP3985309B2 - Vacuum cleaner suction tool and vacuum cleaner using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vacuum cleaner suction tool used in general households and a vacuum cleaner using the same.
[0002]
[Prior art]
As shown in FIGS. 10 and 11, a conventional vacuum cleaner suction tool includes an upper cover body 19 and a lower cover provided with a dust passage 22 having a side air intake portion 20 and a pair of left and right front air intake portions 21. The body 23 and the central air intake 24 that is located in the center of the dust passage 22 and opens in the floor surface direction are provided.
[0003]
With the above configuration, air is taken in from the side air intake unit 20 and the front air intake unit 21 as well as between the lower cover body 23 and the floor surface, and is sucked in from the central air intake unit 24. It was removed.
[0004]
In recent years, as shown in FIGS. 12 to 16, the upper cover body 26 having a pair of left and right intake ports 25, a dust passage 28 having a side intake portion 27, and a pair of left and right intake ports 25 are taken in. The lower cover body 30 includes a pair of left and right exhaust ports 29 for discharging air to the dust passage 28, the upper isolation wall 31 of the upper cover body 26, and the lower isolation wall 32 of the lower cover body 30. Some are provided with a left and right independent communication passage 33 communicating with the exhaust port 29 and a central intake portion 34 that is located in the center of the dust passage 28 and opens in the floor surface direction. Note that the side wall 35 of the dust passage 28 facing the central air intake 34 is flat.
[0005]
In the above configuration, the intake air from the intake port 25 and the exhaust port 29 are exhausted independently from each other on the left and right sides, and the air discharged from the exhaust port 29 in the dust passage 28 collides with the floor surface to cause a vortex. Dust was rolled up from the floor to improve dust collection.
[0006]
Further, the amount of air taken in is larger than those shown in FIGS. 10 and 11, the suction pressure generated between the lower cover body 30 and the floor surface is reduced, and the operating force when moving the suction tool 36 is reduced. Was also realized.
[0007]
[Problems to be solved by the invention]
In the conventional vacuum cleaner suction tool shown in FIGS. 10 and 11, the amount of air taken in is small, the suction pressure generated between the lower cover body 23 and the floor surface is high, and the suction tool 37 is moved. The operation was large and the cleaning work was difficult. Further, on the floor surface located below the dust passage 22, the air only flows toward the central air intake portion 24, and the dust collection capability is not sufficient.
[0008]
On the other hand, in the conventional vacuum cleaner suction tool shown in FIGS. 12 and 13, as shown in FIGS. 14 to 16, via the left and right independent communication passages 33 constituted by the upper isolation wall 31 and the lower isolation wall 32. Since intake and exhaust are performed, if the intake port 25 or the exhaust port 29 is clogged with dust, a vortex air current cannot be generated, and there is a problem that dust collection performance is deteriorated. Further, dust accumulates in the dust collection chamber of the main body of the vacuum cleaner, and when the amount of intake air from the central intake portion 34 decreases, the amount of exhaust discharged from the exhaust port 29 also decreases, and from the side intake portion 27 to the central intake portion 34. It was canceled out by the air flow toward it, and it was difficult to stably generate the vortex air flow, and the dust collecting property was easily lowered.
[0009]
In addition, the communication passage 33 is a narrow space, and the air sucked into the communication passage 33 from the intake port 25 becomes a very turbulent air flow and is exhausted from the exhaust port 29, so that the exhaust noise becomes large, Since the intake air and the exhaust air are made from the same direction, there is a problem that sounds generated from the bottom surface of the suction tool 36 such as exhaust sound from the exhaust port 29 and intake sound from the central intake portion 34 are likely to leak from the intake port 25. .
[0010]
Further, when the side wall 35 of the dust passage 28 facing the central intake portion 34 is flat, the vortex airflow generated in the dust passage 28 is sucked from the central intake portion 34 and is smoothly changed in direction. There is a problem that the intake force is not performed and the central intake portion 34 having the highest adsorption pressure on the bottom surface of the suction tool 36 tends to sink into the floor surface due to insufficient contact area, resulting in an increase in operating force.
[0011]
The present invention is intended to solve the conventional problems as described above. In addition to improving dust collection performance, the vacuum cleaner suction tool and the cleaning workability that realizes reduction of noise and operation force are achieved. It aims to provide an excellent vacuum cleaner.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an upper cover body, a lower cover body having a dust passage opened in a lower surface , a central air intake portion located at the center of the dust passage, and the lower cover body. a communication passage configured in the passage and separated and the lower cover member and the upper cover member, a plurality of intake ports for taking the Re et disposed above the cover member air so as to communicate with the communicating passage from the front A plurality of exhaust ports provided in the dust passage are provided so that the air discharged from the upper side and the lower side in communication with the communication passage collides with the cleaning surface to generate a vortex .
[0013]
With the above configuration, the multiple intake ports of the upper cover body and the multiple exhaust ports of the lower cover body communicate with each other, so vortex airflow is generated even if any of the intake or exhaust ports is clogged with dust The air taken in from the upper cover body into the communication passage is taken in a large amount from a plurality of air intakes and the communication passage is wide. Since the air is rectified in the passage and then discharged from the exhaust port to the dust passage, the exhaust sound can be reduced.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
According to a first aspect of the present invention, there is provided an upper cover body, a lower cover body having a dust passage opened in a lower surface , a central air intake portion located at the center of the dust passage, and the lower cover body. a communication passage configured in the passage and separated and the lower cover member and the upper cover member, a plurality of intake ports for taking the Re et disposed above the cover member air so as to communicate with the communicating passage from the front And a plurality of exhaust ports provided in the upper portion of the dust passage so that the air discharged from the upper side and the lower side in communication with the communication passage collides with a cleaning surface to cause a vortex flow. Since the upper cover body and the lower cover body are connected to each other, the vortex flow can be generated even if any of the intake or exhaust ports are clogged with dust. , Collection The air taken into the communication passage from the upper cover body is rectified in the communication passage once because a large amount of air is taken in from a plurality of intake ports and the communication passage is wide. Since it is discharged from the rear exhaust port to the dust passage, the exhaust noise can be reduced.
[0015]
According to the second aspect of the present invention, the exhaust port facing the communication passage is directed rearward, and the flow of air flowing in from the plurality of intake ports is reversed in the communication passage. It is possible to make a detour, and it is possible to reduce the leakage of the sound generated from the bottom surface of the suction tool, such as the exhaust sound from the exhaust port and the intake sound from the central air intake, directly from the intake port of the upper cover body.
[0016]
Invention of Claim 3 of this invention arrange | positions a front intake part between several exhaust ports, dust accumulates in the dust collection chamber of a vacuum cleaner main body, and the intake amount from a center intake part reduces, Even when the amount of exhaust exhausted from the exhaust port of the lower cover body is reduced, the airflow taken from the front air intake is an airflow in the direction of accelerating the vortex, enabling stable vortex generation. , Decrease in dust collection performance can be reduced.
[0017]
According to a fourth aspect of the present invention, a protrusion projecting toward the central air intake section is provided on the side wall of the dust passage facing the central air intake section, and vortex airflow generated in the dust passage is sucked from the central air intake section. When changing direction suddenly, in addition to realizing smooth intake, increase the contact area in the vicinity of the central intake section with the highest adsorption pressure on the bottom of the suction tool, and reduce the sinking of the lower cover body to the floor , Increase in operating force can be reduced.
[0018]
Invention of Claim 5 of this invention is equipped with the electric blower which attracts | sucks dust, the dust collection chamber which collects dust, and the suction inlet connected to the said dust collection chamber, Any one of Claims 1-4 The vacuum cleaner suction tool according to the item is used as the vacuum cleaner that is connected to the suction port, and the vacuum cleaner having excellent cleaning workability can be provided.
[0019]
【Example】
Embodiments of the present invention will be described below with reference to FIGS.
[0020]
In FIG. 2, 2 is a main body of a vacuum cleaner, which incorporates an electric blower 2a and a dust collection chamber 2b. Reference numeral 2c denotes a suction port which communicates with the dust collection chamber 2b and is connected to one end of the hose 3. The suction tool 1 is connected to the other end of the hose 3 via the extension pipe 4.
[0021]
As shown in FIGS. 3 and 5, the suction tool 1 includes a pair of left and right intake ports 5, an upper cover body 7 having an upper intake port 6, and side intake portions 8 as shown in FIGS. A dust passage 10 having a front intake portion 9 arranged in a pair on the left and right side, and an outer exhaust port 11 and an inner exhaust port 12 for discharging air taken in from the intake port 5 and the upper intake port 6 to the dust passage 10 are arranged in a pair on the left and right. The lower cover body 13 and the central air intake portion 14 that is located in the center of the dust passage 10 and opens in the floor surface direction are provided.
[0022]
As shown in FIG. 1, the space partitioned by the upper isolation wall 15 (FIG. 6) of the upper cover body 7 and the lower isolation wall 16 (FIG. 7) of the lower cover body 13 is separated from the pair of left and right intake ports 5. A communication passage 17 that communicates the intake port 6 with the pair of left and right outer exhaust ports 11 and the inner exhaust port 12 is formed. Here, the pair of left and right front intake portions 9 are disposed between the pair of left and right outer exhaust ports 11 and the inner exhaust port 12.
[0023]
In addition, as shown in FIG. 1, intake air from the pair of left and right intake ports 5 and the upper intake port 6 is sucked from the front of the suction tool 1, and the intake air is a pair of left and right outer exhaust ports 11 and inner exhaust ports. 12 is sucked from behind and discharged into the dust passage 10. Further, as shown in FIG. 4, a protruding portion 18 that protrudes in the direction of the central intake portion 14 is disposed on the side wall of the dust passage 10 that faces the central intake portion 14.
[0024]
The operation of the above configuration is as follows. That is, the air sucked from the pair of left and right intake ports 5 and the upper intake port 6 is once merged in the communication passage 17 and then discharged from the pair of left and right outer exhaust ports 11 and the inner exhaust port 12 to the dust passage 10. Is done. The air discharged to the dust passage 10 collides with the floor surface and causes a vortex air flow, and is pushed toward the central air intake portion 14 by the air flow sucked from the side air intake portion 8, and extends from the central air intake portion 14 to the extension pipe 4 and the hose. 3 is sucked into the main body 2 of the vacuum cleaner.
[0025]
Here, since the pair of left and right intake ports 5 and the upper intake port 6 and the pair of left and right outer exhaust ports 11 and the inner exhaust port 12 communicate with each other via the communication passage 17, the intake port 5 and the upper intake port 6. Alternatively, even when either the outer exhaust port 11 or the inner exhaust port 12 is clogged with dust, it is possible to generate a vortex air flow, reduce the dust collection performance, and at the inside of the communication passage 17, the intake port 5. Since a large amount of air flows from the upper intake port 6 and the communication passage 17 is wide, the flow rate of the flowed-in air decreases and is rectified and discharged from the outer exhaust port 11 and the inner exhaust port 12 to the dust passage 10. Therefore, exhaust noise can be reduced.
[0026]
Further, as shown in FIG. 1, in the communication passage 17, the intake direction of the pair of left and right intake ports 5 and the upper intake port 6 and the exhaust direction of the outer exhaust port 11 and the inner exhaust port 12 are reversed. The airflow can be diverted, and the sound generated from the bottom surface of the suction tool 1 such as the exhaust sound from the outer exhaust port 11 and the inner exhaust port 12 and the intake sound from the central intake unit 14 is directly applied to the pair of left and right intake ports 5. Further, leakage from the upper intake port 6 can be reduced.
[0027]
Further, as shown in FIG. 9, the vortex airflow generated in the dust passage 10 is accelerated by the vortex airflow generated at the outer exhaust port 11 by the airflow from the front intake portion 9, and the accelerated vortex airflow is further increased. Since it merges with the vortex airflow generated from the inner exhaust port 12 and is further accelerated, dust accumulates in the dust collection chamber 2b of the vacuum cleaner body 2, and the intake air amount from the central intake portion 14 decreases, and the outer exhaust port 11 and Even when the amount of exhaust discharged from the inner exhaust port 12 is reduced, it is possible to generate a stable vortex and reduce the reduction in dust collection.
[0028]
Further, by providing a protruding portion 18 protruding in the direction of the central air intake portion 14 on the side wall of the dust passage 10 facing the central air intake portion 14, the vortex airflow generated in the dust passage 10 is sucked from the central air intake portion 14 and suddenly increases. When the direction is changed, the smooth suction is realized and the contact area near the central suction part where the suction pressure is the highest on the bottom of the suction tool is increased to reduce the sinking of the lower cover body to the floor surface. Increase in power can be reduced.
[0029]
【The invention's effect】
According to the first aspect of the present invention, it is possible to improve the dust collecting property by generating a stable vortex and to reduce the noise by the rectifying action in the communication passage.
[0030]
According to invention of Claim 2 of this invention, the noise by the detouring effect | action of the airflow in a communicating path can be reduced.
[0031]
According to the invention described in claim 3 of the present invention, the dust collecting property can be improved by the generation of a stable vortex.
[0032]
According to the fourth aspect of the present invention, it is possible to improve dust collection by smooth intake air, reduce noise, and improve operability by reducing sinking of the lower cover body to the floor surface.
[0033]
According to the invention described in claim 5 of the present invention, the cleaning workability can be improved by using the vacuum cleaner suction tool that realizes the reduction of noise and operation force while improving the dust collection performance.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part of a vacuum cleaner suction tool according to an embodiment of the present invention. FIG. 2 is an overall view of the vacuum cleaner. FIG. 3 is a top view of the vacuum cleaner suction tool. 4] Bottom view of the vacuum cleaner suction tool [FIG. 5] Front view of the vacuum cleaner suction tool [FIG. 6] Bottom view of the upper cover body of the vacuum cleaner suction tool [FIG. 7] Top view of lower cover body of vacuum cleaner suction tool [FIG. 8] AA sectional view of FIG. 5 [FIG. 9] BB sectional view of FIG. Fig. 11 is a bottom view of the vacuum cleaner suction tool. Fig. 12 is a top view of another vacuum cleaner suction tool. Fig. 13 is a bottom view of the vacuum cleaner suction tool. 14 is a bottom view of the upper cover body of the vacuum cleaner suction tool. FIG. 15 is a top view of the lower cover body of the vacuum cleaner suction tool. Cross-sectional view of the essential part 6] the vacuum cleaner for suction device [Description of symbols]
DESCRIPTION OF SYMBOLS 5 Intake port 6 Upper intake port 7 Upper cover body 8 Side intake part 9 Front intake part 10 Dust path 11 Outer exhaust port 12 Inner exhaust port 13 Lower cover body 14 Central intake part 17 Communication path

Claims (5)

An upper cover body, a lower cover body having a dust passage opened in a lower surface , a central air intake portion located at the center of the dust passage, and the lower cover body separated from the dust passage by the lower cover body; a communicating passage constituted by an upper cover member, a plurality of intake ports for taking the Re et disposed above the cover member air so as to communicate with the communicating passage from the front, from the upper communication with the communication passageway below A vacuum cleaner suction tool including a plurality of exhaust ports provided above the dust passage so that the air discharged to the surface collides with a cleaning surface to generate a vortex .   The suction tool for a vacuum cleaner according to claim 1, wherein an exhaust port facing the communication passage is directed rearward so that the flow of air flowing in from the plurality of intake ports is reversed in the communication passage.   The vacuum cleaner suction tool according to claim 1 or 2, wherein a front air intake portion is disposed between the plurality of exhaust ports.   The suction tool for a vacuum cleaner according to any one of claims 1 to 3, wherein a protruding portion that protrudes toward the central intake portion is provided on a side wall of the dust passage that faces the central intake portion.   An electric blower that sucks dust, a dust collection chamber that collects dust, and a suction port that communicates with the dust collection chamber, wherein the vacuum cleaner suction tool according to any one of claims 1 to 4 is provided. A vacuum cleaner that communicates with the inlet side.

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