JPH11113816A - Suction tool for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently suck dust, etc., on a floor by circulating a suction air of a suction tool at high speed and generating this high-speed circulation flow on the floor surface. SOLUTION: This suction tool is provided with a suction pipe 13 whose one end is communicated with an electric blower incorporated in a cleaner main body via a connecting tube, etc., and other end has a suction port 12, and an outside air introducing body 16 whose top end part is integrated with the suction pipe 13 in the outer circumference of the suction pipe 13 so as to form an outside air circulating space part and cover the bottom outer circumference of the suction pipe 13, and which is provided with the outside air introducing body 16 having an outside air introducing port 17 which is inserted into the outside air circulating space part 14 in its top part. The bottom end part of the outside air introducing body 16 is positioned lower than the suction port 12 of the suction pipe 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device for a vacuum cleaner, and more particularly, to an electric device for swirling outside air sucked by an electric blower and efficiently sucking dust and the like on a floor surface by the swirling airflow. The present invention relates to a suction device for a vacuum cleaner.

[0002]

2. Description of the Related Art FIG.
It is sectional drawing which shows the conventional suction tool shown by the No. 0 gazette.
In the drawing, reference numeral 1 denotes a suction pipe, a suction port 2 is formed at a lower end, and an upper end communicates with an electric blower (not shown). Reference numeral 3 denotes an outer tube provided outside the suction tube 1.
A space 4 is formed between the first and second spaces, and an intake port 5 is provided at an upper end of the space 4 and an exhaust port 6 is provided at a lower end of the space 4. Reference numeral 7 denotes a guide vane formed in the space portion 4, which serves to swirl the outside air sucked from the intake port 5, and uses the outside air exhausted from the exhaust port 6 as a swirling exhaust flow. Reference numeral 8 denotes dust or solid matter to be sucked, and H denotes a predetermined distance from the suction port 5 to the floor X, which indicates a distance at which the dust 8 on the floor X can be reliably sucked. In addition, the broken line in the figure shows the conical swirling airflow generated during operation between the predetermined distances H, A is the outer peripheral airflow, and B is the outer airflow.
Is an inner peripheral air flow, and C is an ascending air flow path.

In such a conventional suction device, when an electric blower (not shown) is operated and the suction device is brought closer to the floor surface X by a predetermined distance H, the swirling exhaust flow exhausted from the exhaust port 6 is reduced. The vehicle turns over a predetermined distance H by inertia force. For this reason,
The dust 8 on the floor surface X is also swirled at a high speed, is sucked and moved by the rising air flow path C having a low pressure, and is drawn by the electric blower (not shown) from the suction port 2 on the rising air flow. Go. As a result, dust 8 can be reliably collected by providing a filter (not shown) on the upstream side of the electric blower (not shown).

[0004]

In the conventional suction device as described above, when sucking dust 8 on the floor surface X, the suction device is moved while moving the suction device. The predetermined distance H is secured by a guide, and when the predetermined distance H is increased, the swirling airflow is weakened, and there is a problem that the dust 8 is not sucked into the suction port 2. In addition, since no shield is formed between the outside air in the room and the conical outer airflow A shown by the broken line generated during the predetermined distance H, the airflow circling at high speed is directly generated as noise in the room. , Intake port 5
Since the outside air other than the air flowing in from outside enters the outer peripheral airflow A, the swirling airflow stalls and the pressure in the upward air flow path C is easily increased. That is, the suction force is reduced. Furthermore, outer airflow A
Causes friction with the outside air in the room, which causes a reduction in the speed of the swirling airflow.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and the outside air sucked by a suction tool is swirled at high speed, and this high-speed swirling flow is also generated on the floor surface, so that the floor is swollen. It is an object of the present invention to obtain a suction device for a vacuum cleaner capable of efficiently sucking dust and the like on a surface.

[0006]

SUMMARY OF THE INVENTION A suction device for a vacuum cleaner according to the present invention has one end communicating with an electric blower built in the main body of the cleaner through a connecting pipe or the like, and having a suction port at the other end. A pipe and an upper end thereof are provided integrally with the suction pipe so as to form an outside air swirling space on the outer circumference of the suction pipe, cover a lower outer circumference of the suction pipe, and a circulation port is formed at a lower end thereof, An outside air introduction body provided with an outside air introduction port communicating with the outside air swirling space at an upper portion, wherein a lower end of the outside air introduction body is positioned below a suction port of the suction pipe.

Further, the suction tool for a vacuum cleaner according to the present invention has a suction pipe having one end communicating with an electric blower built in the cleaner body via a connection pipe or the like, and having a plurality of suction ports at the other end. An upper end portion is provided integrally with the suction pipe so as to form an outside air swirling space portion on an outer periphery of each of the plurality of suction openings, and covers an outer periphery of the plurality of suction openings. A plurality of circulation ports communicating with the outside air inlet, and an upper portion provided with an outside air introduction port communicating with the outside air swirling space at an upper portion thereof, and a lower end of the outside air introduction body is sucked into the suction pipe. It is located below the mouth. Further, the plurality of circulation ports were connected by a connection passage.

[0008] A seal member made of a soft material is provided at the lower end of the outside air introducing body of each of the suction devices for a vacuum cleaner described above so as to substantially contact the floor surface. Further, the above-mentioned sealing member was constituted by a brush which was densely planted.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 to 4 show a suction device for a vacuum cleaner according to Embodiment 1 of the present invention. Reference numeral 10 denotes a suction pipe, which is provided with a connection port 11 at an upper end and a suction port 12 at a lower end, and which is formed in a substantially rectangular shape with a substantially circular cross section, and a lower outer periphery of the suction pipe 13. An upper end portion is fixed to or integrally formed with the suction pipe 13 so as to form an outside air swirling space portion 14 so as to cover the outside air circulation space portion 14, and a circulation port 15 provided at a lower end portion is located below the suction port 12 and has a substantially circular shape. It is composed of The outside air introduction body 16 is inclined so that its cross-sectional area increases from the upper end to the lower end, and the circulation port 15 is formed by a wheel described later so as to have a small gap Δt with the floor X. I have. Reference numeral 17 denotes an outside air introduction port formed in a wall on the upper end side of the outside air introduction body 16, and is opened in a tangential direction so as to swirl when the outside air is sucked into the outside air swirling space 14.

A plurality of guide vanes 18 are provided in the outside air swirling space 14 for reliably turning the outside air into swirling air flow. Reference numeral 19 denotes an outside air introduction body 16 outside the circulation port 15.
A pair of front wheels provided on both sides in front of the
The rear wheels are provided outside the outside air introducing body 16 and outside the air inlet 5, and each of the circulation ports 15 is attached so as to maintain a small gap Δt with the floor surface X. Reference numeral 21 denotes a cleaner main body, in which a dust collecting chamber 22 and an electric blower 23 are built. Reference numeral 24 denotes a connector composed of an extension pipe, a hose, and the like. The distal end is connected to the suction tool 10, and the rear end is connected to the cleaner body 21. A indicates an outer airflow generated near the inner wall of the outside air introducing body 16, B indicates an inner airflow, C indicates a rising air flow path, and H indicates a distance from the floor surface X to the suction port 12. D indicates the inner diameter of the suction port 12.

In the suction device for a vacuum cleaner configured as described above, the outside air in the room is sucked from the outside air inlet 17 with the operation of the electric blower 23, and the outside air inlet 17 is connected to the outside air swirling space 14. A high-speed swirling airflow is generated by the guide vanes 18, and the airflow descends to the suction port 12. However, the high-speed swirling airflow passes through the suction port 12 due to its inertia force, descends along the wall surface inside the outside air introduction body 16 to the circulation port 15, that is, near the floor X, and rotates dust and the like on the floor X. Then, the dust and the like are moved into the rising air flow path C having a low pressure to start rising,
The cleaner body 21 is caused to suck through the suction pipe 11.

Although a small gap Δt is formed between the circulation port 15 and the floor X, the circulation port 15 is almost in contact with the floor X during cleaning. The outside air rarely enters. Therefore, only the intake air sucked from the outside air inlet 17 is sucked into the electric blower 24, so that the swirling airflow can maintain high-speed rotation. That is, the pressure of the rising air passage C becomes lower, and dust and the like on the floor surface X are reliably sucked. In addition, the relationship between the distance H from the floor surface X to the suction port 12 and the inner diameter D of the suction port 12 showed that, as the distance H was larger than the diameter D, a good value was obtained in the dust suction test results.

Embodiment 2 FIG. FIG. 5 is a longitudinal sectional view of a suction tool according to Embodiment 2 of the present invention. Embodiment 1
The same reference numerals are given to the same parts as those described above, and the description is omitted. In the figure, reference numeral 25 denotes a substantially circular sealing member which is attached to the lower end of the outside air introducing body 16 and is made of a soft material made of synthetic rubber or thermoplastic plastic. It hangs down to have a gap Δt.

Since the present embodiment is configured as described above,
When cleaning the room, the suction tool 10 moves on the floor X
For example, when moving over a threshold or the like, the seal member 21 made of a soft material does not scratch the floor surface X when moving over the sill or the like. Furthermore, when traveling on a carpet with long hairs, the wheels 19 and 20 sink and the sealing member 2
5 directly contacts the carpet, but the seal member 25 made of a soft material is deformed to reduce the contact resistance and reduce the running force. Note that the seal member 25 has a small gap Δ with the floor surface X.
Although t is provided, even if the suction tool 10 comes into contact with the floor surface X while traveling, there is no possibility that the floor surface X will be scratched or the like, so that the seal member 25 is configured to contact the floor surface X. You may keep it.

FIG. 6 shows another example of the present embodiment, in which the suction pipe 11 and the outside air introducing body 16 are respectively inclined by a predetermined angle θ with respect to the floor surface X, so that, for example, the indoor relatively The moving operation of the suction tool 10 can be easily performed at the time of cleaning a wall, a curtain, furniture, or the like at a high place.

Embodiment 3 7 and 8 show a main part of the third embodiment of the present invention. Instead of the seal member 25 described in the second embodiment, a brush 26 made of a soft material is used for the outside air introducing body 16. It is attached to the circulation port 15. That is, FIG. 7 shows a case in which one end of a brush 26 arranged closely and linearly is held by a U-shaped base 27 and is bent in a circle as indicated by a dashed line, and FIG. The bundle of brushes 26 is planted in proximity to the base 28.

Since the present embodiment is configured as described above,
The brush 26 forcibly removes dust and the like entangled in particular on the surface side of the carpet with fluff, and puts the dust and the like on the air current circling at a high speed in the lower end portion of the outside air introducing body 16. Can be aspirated. In addition, since the brush 26 is planted in proximity or is held in a sheet shape, the brush 26 naturally plays a role of shutting off the swirling airflow and the outside air.

Embodiment 4 9 to 11 show a fourth embodiment of the present invention. In the drawing, reference numeral 30 denotes a suction pipe having a connection port 11 at an upper end, a lower branch branched into two, and suction ports 12a and 12b formed at a lower end, respectively. 31 is an outside air introduction body, the upper end of which is a suction pipe 3.
0, and the lower portion is provided with a partition wall 32 at the center to cover the outer periphery of the suction ports 12a, 12b.
And outside air swirling spaces 14a and 14b are formed between them, and circulation ports 15a and 15b communicating with the outside air swirling spaces 14a and 14b, respectively, are provided at the lower end. 17a, 1
An outside air inlet 7b is provided above the outside air introduction body 31 and communicates with the outside air swirling spaces 14a and 14b. In addition,
The lower ends of the circulation ports 15a and 15b (therefore, the lower ends of the outside air introducing bodies 31) are located below the suction ports 12a and 12b. Reference numeral 25 denotes a substantially elliptical seal member which is attached to a lower end portion of the outside air introducing body 31 and connects the respective circulation ports 15a and 15b, and reference numerals 33a and 33b denote seal members 28.
Is a continuous passage communicating with the circulation ports 15a and 15b inside the inside of the container.

Since the present embodiment is configured as described above,
With the operation of the electric blower 23, the outside air enters through the respective outside air introduction ports 17a, 17b, descends while turning in the respective outside air swirling spaces 14a, 14b, and descends.
Head to a, 12b. At this time, the descending swirling air current descends along the inner wall of the outside air introducing body 31 to the floor surface X due to its inertia force, places dust and the like on the floor surface X into the swirling air flow, and generates an ascending air flow having a low atmospheric pressure generated at the center. The air is sucked into the passage C, and is sucked into the cleaner body 21 through the suction ports 12a and 12b together with the rising airflow.

At this time, a part of the two swirling air currents swirling at the same time is connected to the connecting passage 33 from a higher wind pressure to a lower wind pressure.
a, 33b are moved to equalize both swirling air pressures. This prevents variations in suction performance,
Dust and the like in the vicinity of the connection passages 33a and 33b can be absorbed, and cleaning can be performed over a wide range. In addition, since the seal member 25 that is almost in contact with the floor surface X is located outside the connection passages 33a and 33b, it prevents contact with the outside air and
Noise due to movement of the airflow can be cut off.

In the second to fourth embodiments, the case where the seal member 25 and the brush 26 are attached to the circulation port 15 has been described. The suction force can be adjusted by changing the distance H from the floor surface X to the suction port 12. In addition, the velocity of the outer airflow A can be increased by going from the upper part of the outside air swirling space portion 14 to the circulation port 15 and gradually increasing the opening area thereof,
The pressure in the ascending air flow path C can be further reduced.

[0022]

As described above, the suction device for a vacuum cleaner according to the present invention has an outside air inlet above the suction port having an outside air swirling space around it and a circulation port below and near the floor. By providing a structure in which the outside air is swirled at a high speed, the air can be swirled even on the floor surface, that is, between the boards and the surface of the tatami mats, and even to the root of the carpet, so that dust and the like can be lifted and sucked. . In addition, the swirling airflow on the floor can be shut off from the outside air by the outside air introducing body. As a result, the noise generated by the swirling airflow is shut off into the cleaning room and the speed of the swirling airflow is reduced, that is, the dust suction performance is prevented from lowering. Can be done.

Further, by forming a circulation port around each of the plurality of suction ports, the floor surface can be widely cleaned at a time, and an efficient suction tool including energy saving can be provided.

Furthermore, by connecting the plurality of circulation ports with the connection passage, the floor surface between the circulation ports can be cleaned, and the air pressure circling through each circulation port can be equalized. Unevenness can be eliminated.

In addition, by providing a sealing member made of a soft material at the circulation port, it is possible to prevent scratches and the like from being generated on the floor surface, especially when cleaning a floor surface or a sill having an uneven surface, and it is also possible to prevent the hair from growing. When cleaning a long carpet or the like, even if the suction tool sinks into the carpet, the sealing member is deformed so that running resistance is unlikely to occur, and light operability can be secured. Further, a sound absorbing effect of the swirling airflow on the floor surface can be obtained.

Further, by forming the seal member attached to the circulation port with a dense brush, the sticking to the floor surface facilitates the separation of dust from the floor surface, and also blocks the swirling airflow and the outside air. Can be.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view of a vacuum cleaner suction tool according to Embodiment 1 of the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a side view showing the entire vacuum cleaner according to the present invention.

FIG. 4 is a sectional view taken along line aa of FIG. 1;

FIG. 5 is a longitudinal sectional view of a vacuum cleaner suction tool according to Embodiment 2 of the present invention.

FIG. 6 is a longitudinal sectional view of another example of the second embodiment.

FIG. 7 is a perspective view showing a brush of the vacuum cleaner suction tool according to Embodiment 3 of the present invention.

FIG. 8 is a perspective view showing another brush of the third embodiment.

FIG. 9 is a front view of a vacuum cleaner suction tool according to Embodiment 4 of the present invention.

FIG. 10 is a longitudinal sectional view of FIG.

FIG. 11 is a bottom view of FIG. 9;

FIG. 12 is a partially cutaway longitudinal sectional view showing an example of a conventional vacuum cleaner suction tool.

[Explanation of symbols]

12 suction port, 13 suction pipe, 14 outside air swirl space, 15 circulation port, 16 outside air introduction body, 17 outside air introduction port, C rising air flow path, 25 seal member, 26 brush,
33a, 33b Connection passage.

Claims (5)

[Claims] 1. A suction pipe having one end communicating with an electric blower built in a cleaner body via a connection pipe and the like, and a suction pipe having a suction port at the other end, and an outside air swirling space formed on an outer periphery of the suction pipe. As described above, the upper end is provided integrally with the suction pipe to cover the lower periphery of the suction pipe, a circulation port is formed at the lower end, and an outside air introduction port communicating with the outside air swirling space is provided at the top. A suction unit for a vacuum cleaner, comprising: an outside air introduction body, wherein a lower end portion of the outside air introduction body is positioned below a suction port of the suction pipe. 2. A suction pipe having one end communicating with an electric blower built in the cleaner body via a connection pipe or the like, and a suction pipe having a plurality of suction ports at the other end, and outside air turning around the plurality of suction ports, respectively. An upper end thereof is provided integrally with the suction pipe so as to form a space, and covers an outer periphery of the plurality of suction ports, and a plurality of circulation ports communicating with the outside air swirling space are provided at a lower end thereof. And an outside air introduction body provided with an outside air introduction port communicating with the outside air swirling space portion, respectively, wherein a lower end of the outside air introduction body is located below a suction port of the suction pipe. Suction tool for vacuum cleaner. 3. The suction tool for a vacuum cleaner according to claim 2, wherein the plurality of circulation ports are communicated with each other through a connection passage. 4. The vacuum cleaner according to claim 1, wherein a seal member made of a soft material is provided at a lower end portion of the outside air introducing body so as to substantially contact the floor surface. Suction implement. 5. The suction tool for an electric vacuum cleaner according to claim 4, wherein the sealing member is formed of a brush that is densely planted.