JP2001161612A - Hose for vacuum cleaner and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dust from being blown up by the exhaust air in an exhaust air circulating vacuum cleaner. SOLUTION: In a flexible hose 21 with an exhaust channel B3 and an intake air channel A3, on an outer hose 22 of the hose 21, which forms the exhaust channel B3, there are formed numerous fine holes 22f as a ventilating means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner, and more particularly to an exhaust gas recirculation (circulation) type in which exhaust gas from an electric blower built in a cleaner body is returned to a suction tool through a hose and a pipe. It concerns vacuum cleaners and hoses.

[0002]

2. Description of the Related Art In general floor-moving vacuum cleaners, exhaust air from an electric blower built in the cleaner body is discharged to the outside through an exhaust port formed on the back side of the cleaner body. However, since all the exhaust air from the electric blower is exhausted, the air blows out to the outside with considerable force, and the exhaust air causes dust that stagnates on the floor or the carpet to fly up and diffuse into the room.

In order to solve this problem, a vacuum cleaner has been proposed in which a hose, a pipe, and a suction tool connected to a cleaner body are provided with an exhaust passage for recirculating exhaust air from an electric blower together with an intake passage. ing.

In this exhaust gas recirculation type vacuum cleaner, the recirculating air is heated by the heat of the electric blower when cooling the electric blower, but when the exhaust gas is completely recirculated,
Since no air is taken in from the outside, the temperature gradually rises, the durability of the hoses and the components of the main body is reduced, and there is a possibility that the hoses and the components of the main body may be damaged in a severe case.

Further, as disclosed in Japanese Patent Application Laid-Open No. 3-162814, when a part of the exhaust gas is exhausted from the exhaust port at the rear of the cleaner body instead of completely recirculating the exhaust gas, the suction Since the outside air can be sucked from the tool, the circulating air can be prevented from getting hot,
Dust stagnating on the floor or carpet was soared by the exhaust air from the exhaust port of the cleaner body, and could be diffused throughout the room.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vacuum cleaner capable of preventing the returning air from being heated to a high temperature and at the same time restraining the dust from rising due to the exhaust air.

[0007]

According to a first aspect of the present invention, there is provided a vacuum cleaner hose comprising a flexible hose having an exhaust passage and an intake passage formed therein. A ventilation means is formed in a hose forming a flow path.

[0008] In the above configuration, the ventilation means is constituted by a minute through hole formed in the hose.

[0009] The hose may be formed of a breathable member.

It is preferable that the hose has a double structure including an outer hose and an inner hose, and an exhaust passage is provided between the outer hose and the inner hose.

[0011] A second means for solving the problems is that a hose, a connecting pipe and a suction pipe connected to a cleaner body having a built-in electric blower are provided with an exhaust flow path for circulating the exhaust from the intake flow path and the electric blower. A vacuum cleaner having a passage formed therein, wherein a ventilation means is formed in a hose forming the exhaust passage.

In the above structure, the ventilation means is constituted by a minute through hole formed in the hose.

[0013] The hose may be formed of a breathable member.

Further, the hose has a double structure including an outer hose and an inner hose which are flexible hoses formed in a tubular shape, and an exhaust passage is provided between the outer hose and the inner hose. Is desirable.

[0015] A third means for solving the problem is that an exhaust flow which recirculates exhaust air from the intake flow path and the electric blower to a hose, a connection pipe, and a suction tool connected to a cleaner body incorporating the electric blower. A vacuum cleaner having a passage formed therein, wherein a ventilation means is formed in a connecting pipe forming the exhaust passage.

In the above-mentioned structure, the ventilation means is constituted by a minute through hole formed in the connection pipe.

Further, it is preferable that the connecting pipe has a double structure composed of an outer tubular portion and an inner tubular portion, and an exhaust passage is provided between the outer tubular portion and the inner tubular portion. .

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 8 show an embodiment of the present invention, and a description will be given below with reference to these drawings.

A cleaner body 1 is composed of an upper case 2, a lower case 3, and a dust collecting cover 4, as shown in FIG. The hose connection port 5 to which the hose connection portion 17 is connected is formed, and the slit-shaped exhaust port 6 is formed on the rear side. The bottom inside the cleaner body 1 is separated from the upper space inside the cleaner body 1 by a partition wall 7 and has an exhaust passage B1 communicating with the hose connection port 5 and an external exhaust flow communicating with the exhaust port 6. A road C is formed. A partition wall 8 that partitions the space above the partition 7 back and forth is provided upright on the partition 7.

Reference numeral 9 denotes a dust collecting chamber formed on the front side of the partition wall 8. A hose insertion port 9a is formed concentrically with the hose connection port 5 on the front side. A dust collecting bag mounting case 11 for detachably fixing the dust collecting bag 10 is detachably housed in the dust collecting chamber 9, and the opening of the dust collecting bag 10 is connected to a hose of the dust collecting chamber 9 in a mounted state. It is made to face the insertion port 9a.

Reference numeral 12 denotes a fine dust filter attached to the partition wall 8, which is located on the rear side of the dust collecting bag 10 and removes fine dust.

Reference numeral 13 denotes an electric blower storage chamber formed on the rear side of the partition wall 8, and an electric blower 14 is stored therein. An opening 13a is formed below the electric blower storage chamber 13 so as to communicate the electric blower storage chamber 13, the exhaust passage B1, and the external exhaust passage C. The electric blower 14 is driven by the electric blower 14. Exhaust gas from the exhaust pipe 14 is diverted by the ribs 15 erected on the lower case 3 and is guided from the opening 13a to the hose connection port 5 side via the exhaust passage B1 and partially from the opening 13a to the outside. The air is exhausted from the exhaust port 6 to the outside of the cleaner body 1 through an exhaust path C and an exhaust filter 16 provided in the exhaust port 6.

Reference numeral 17 denotes a main body-side hose connection portion which is connected to a hose 21 to be described later and is mounted on the hose connection port 5.
As shown in FIG. 4, the outer pipe 18 has a double structure including a cylindrical outer pipe 18 and an inner pipe 19 formed integrally with the outer pipe 18 by a plurality of support ribs 19a.

At one end of the outer pipe 18 attached to the hose connection port 5, a locking claw 18a is formed to be locked by a locked portion 5a provided at the hose connection port 5, while the other end is formed. On the side, a screw-shaped outer rib 18b is formed to be inclined with respect to the tube axis direction.

The inner pipe 19 is formed to be longer than the outer pipe 18 so that one end attached to the hose connection port 5 projects from the hose insertion port 9a into the dust collection chamber 9. On the other hand, the other end is formed to be longer than the outer pipe 18,
An inner rib 19b that is inclined in the same direction as the outer rib 18b of the outer pipe 18 is formed on the outer peripheral side. Reference numeral 20 denotes a cylindrical cover provided so as to cover the side of the main body side hose connection portion 17 to which the hose 21 is connected.

The main body-side hose connection portion 17 locks the locking claw 18a with the hose connection port 5 of the cleaner main body 1, thereby forming the inner pipe 19 of the main body-side hose connection portion 17.
Protrudes into the dust collecting chamber 9 and communicates with the inside of the dust collecting chamber 9, and the inside of the inner pipe 19 serves as an intake passage A <b> 2. Further, the outer pipe 18 communicates with an exhaust flow path B1 in the cleaner body 1, and a space between the outer pipe 18 and the inner pipe 19 becomes an exhaust flow path B2.

Reference numeral 21 denotes a hose attached to the main body-side hose connection portion 17 and a hose connection portion 27 described later, and has a double structure comprising an outer hose 22 and an inner hose 23 as shown in FIG.

As shown in FIG. 6, the outer hose 22 is formed by spirally winding a long member made of a styrene-based elastomer, and joining a bonding portion 22a at the widthwise end of the long member to a bonding agent made of polypropylene. It is formed in a tubular shape by joining at. Spiral ridges 22b and 22c are formed at approximately the center in the width direction of the joining portion 22a and the elongated member, respectively. The ridges 22b and 22c are formed with conductive coils 22d and 22e as signal lines. Is decorated,
The strength of the hose 21 is improved by the coil wires 22d and 22e of the outer hose 22. The outer hose 22 has countless minute through holes 22f as ventilation means through which air can pass.

The outer hose 22 is formed to be translucent so that the inner hose 23 can be seen through the outer hose 22 to improve the design. By making the outer hose 22 translucent, the coils 22d and 22e can be seen from the outside and give the user an uneasy feeling. , 22e are difficult to see.

On the other hand, as shown in FIG. 7, the inner hose 23 is formed by spirally winding an elongate member made of a styrene-based elastomer, and joining a joining portion 23a at the widthwise end of the elongate member to a joining member made of polypropylene. Spiral ridges 23b and 23c are formed at the joint 23a and at the approximate center in the width direction of the elongated member, respectively, by joining with an agent. The inner hose 23 is formed opaque by adding a coloring agent to the styrene-based elastomer.

The hose 21 first has an inner hose 23
The winding direction of the inner rib 19b of the body side hose connection portion 17
The inner hose 23 in the same direction as the inclination of the inner rib 19b.
Screwed into. At this time, the hose 21 of the inner pipe 19
Is protruded from the outer pipe 18 so that the inner hose 23 can be inserted and mounted on the protruding portion, and the inner hose 23 can be easily mounted.

Next, as in the case of the inner hose 23, the winding direction of the outer hose 22 is set to the same direction as the inclination of the outer rib 18b of the main body side hose connection portion 17, and the outer hose 22 is screwed into the outer rib 18b. The mounting of the hose 21 on the main body side hose connection part 17 is completed.

At this time, the inside of the inner hose 23 is communicated with the intake passage A2 of the hose connection 17 on the main body side to form an intake passage A3, while the connection between the outer hose 22 and the inner hose 23 is connected to the hose connection on the main body side. It is communicated with the seventeen exhaust passages B2, and becomes an exhaust passage B3.

Since the winding direction of the inner hose 23 and the winding direction of the outer hose 22 are the same, the directions in which the inner hose 23 and the outer hose 22 are easily bent or twisted are the same. . Therefore, when the hose 21 is twisted or bent while the cleaner body 1 is used, the outer hose 22 and the inner hose 23 are twisted or bent following each other.
The inner hose 23 does not become resistant to each torsion or bending, and the flexibility of the hose 21 is ensured.

Reference numeral 24 denotes a grip portion to which the hose 21 is connected to one end, and a grip portion to which a connecting pipe 32 described later is mounted, and a handle portion 35 to which the connecting pipe 32 is mounted, and the hose 21 to one end side. The other end is the handle 35
And a hose connection portion 27 mounted on the hose.

The hose connecting portion 27 has a double structure including a cylindrical outer pipe 28 and an inner pipe 29 integrally formed with the outer pipe 28 by a support rib 29a. Cover 3 to cover the side
1 is provided.

On the outer periphery of the outer pipe 28 and the inner pipe 29, the outer rib 18 of the main body side hose connection 17 is provided.
An outer rib 28a and an inner rib 29a having the same inclination as those of the inner rib 19b and the inner rib 19b are formed, so that the outer hose 22 and the inner hose 23 of the hose 21 can be screwed in the same direction and mounted. This facilitates the assembling work.

At this time, the outer pipe 28 and the inner pipe 29
The airflow passage B4 communicates with the exhaust passage B3 of the hose 21 to form an exhaust passage B4. The inside of the inner pipe 29 communicates with an intake passage A3 in the hose 21 to form an intake passage A4.

The handle portion 35 is composed of a U-shaped tubular portion 25 and a handle 26 extending above the tubular portion 25. The handle portion 35 has a mounting opening 25a in which the connecting pipe 32 is mounted. The clamp 2 is located above the mounting opening 25a.
5b is provided. A cylindrical portion 30 is formed inside the cylindrical portion 30 and communicates with the mounting port 25a, into which the end of the inner pipe 29 is inserted.
And an intake passage A5 communicating with the intake passage A4 of
An exhaust passage B4 formed by an inner pipe 29 and an outer pipe 28 between the outside of the cylindrical portion 30 and the outer periphery of the grip portion 24.
And an exhaust passage B5.

Reference numeral 32 denotes a connecting pipe which is locked by the clamp 25b and is mounted on the mounting port 25a of the grip portion 24.
It is formed by connecting the pipes 32a. The connecting pipe 32 has an outer cylindrical portion 32b having a substantially circular cross section.
And an inner cylindrical portion 32c eccentric to the outer cylindrical portion 32b and having an upper portion integrally formed with the outer cylindrical portion 32b. The inner cylindrical portion 32c and the outer cylindrical portion 32b form a crescent. A space is formed. When the connecting pipe 32 is attached to the grip portion 24, the inner tubular portion 32
c communicates with the intake passage A5 of the grip portion 24 to form an intake passage A6 therein, and between the outer tubular portion 32b and the inner tubular portion 32c communicates with the exhaust passage B5 of the grip portion 24. To form the exhaust passage B6.

Since the exhaust gas passing through the exhaust passage B6 is clean air from which dust has been removed through the dust collecting bag 10 and the fine dust filter 12 of the cleaner main body 1, the exhaust gas passes through the inner cylindrical portion 32c as shown in FIG. Focusing on the fact that it is not necessary to form a substantially circular cross section in consideration of dust clogging, in the present embodiment, as described above, the exhaust passage B6 has a substantially crescent cross section, and the outer cylindrical portion 32b has a substantially circular cross section. It is formed so that it becomes.

Reference numeral 33 denotes a suction tool connected to the connecting pipe 32, and joint pipes 33a, 33b to which the connecting pipe 32 is connected.
Are formed in a concentric double structure, and the connecting pipe 32
Has a shape similar to that of the connecting pipe 32.

When the electric vacuum cleaner configured as described above is used, the air mixed with the dust sucked from the suction tool 33 by the suction of the electric blower 14 causes the intake passage A5 of the connecting pipe 32, the hose 21 and is taken into the cleaner body 1 through the suction passage A3. In the cleaner body 1, dust is removed by the dust collecting bag 10, and the purified air is sucked by the electric blower 14 through the fine dust filter 12 to cool the electric blower 14.

A part of the exhaust air from the electric blower 14 is exhausted to the outside through the exhaust port 6 of the cleaner main body 1, and the other part passes from the exhaust passage B 1 of the cleaner main body 1 to the exhaust passage B 3 of the hose 21. .

At this time, part of the exhaust gas in the exhaust passage B3 is
Since the air is exhausted by the internal pressure through the innumerable minute through holes 22f provided in the outer hose 22 so as to diffuse slowly from the outer hose 22 to the surroundings, it is possible to suppress the dust from being sowed by the exhaust from the outer hose 22. . And
Since the exhaust from the outer hose 22 is clean exhaust from which dust has been removed, it does not pollute the surrounding air.
Clogging of the through hole 22f can also be prevented. When the hose 21 moves on the floor,
Even if dust adheres to 2, dust adhering by exhausting from the through-hole 22f can be removed and clogging can be prevented. Furthermore, even when dust adheres to the outer hose 22 when the cleaner body 1 is not used, the dust adhered to the outer hose 22 can be removed by exhausting from the through hole 22f when used, and clogging can be prevented.

The ridges 22b, 22 of the outer hose 22
Since the direction of c and the direction of the ridge 23 of the inner hose 23 are formed in the same direction, the airflow resistance between the outer hose 22 and the inner hose 23 due to the ridge 23 is reduced, and the exhaust flow path is reduced. Loss of the hose 21 in the exhaust passage B3 when passing through B3 can be suppressed.

After passing through the exhaust passage B3 of the hose 21, the air returns to the suction device 33 through the exhaust passage B6 of the connecting pipe 32, and is again returned to the connecting pipe together with the dust soared by the exhaust air. It circulates to 32 intake channels A6.

As described above, since the air is exhausted not only from the exhaust port 6 of the cleaner body 1 but also from the outer hose 22, the amount of exhaust from the exhaust port 6 of the cleaner body 1 can be reduced, and the wind speed of the exhaust can be reduced. Thereby, it is possible to effectively suppress the dust in the room being cleaned from rising by the exhaust air from the exhaust port 6. Further, by exhausting air from the exhaust port 6 and the outer hose 22 of the cleaner body 1, external air can be sucked from the suction tool 33, so that the temperature of the recirculating air can be prevented from becoming high. The components of the cleaner main body 1 can be prevented from being damaged.

The outer hose 22 and the inner hose 23
Since the elastomer is used as the material of the above, there is no generation of dioxin even when the hoses 22 and 23 are incinerated, so that environmental pollution can be suppressed.

Further, since the hoses 22 and 23 are formed of a styrene-based elastomer, strength can be improved, breakage can be prevented, and durability can be improved.

In the above-described embodiment, the exhaust port 6
From the hose 21 and the outside hose 2 of the hose 21
Although the air is exhausted from the outlet 2, it is desirable to eliminate the exhaust from the exhaust port 6 of the cleaner body 1 so that the air is exhausted only from the outer hose 22 and further suppress the dust from rising by the exhaust.

Although the through-holes 22f are formed in the outer hose 22 as ventilation means, the outer hose 22 may be made of a cloth, which is a permeable member. In the above embodiment, there is a possibility that the surroundings of the through hole 22f may be deteriorated and cracked due to aging during use, and the durability may be reduced. However, when the outer hose 22 is made of cloth, There is little risk of cracking, and durability can be improved. Also,
When the hose 21 has a double structure including the outer hose 22 and the inner hose 23, the pulling force during operation can be received by the durable outer hose 22 made of cloth. Lightweight hose 21
The overall weight can be reduced, and the operability of the hose 21 can be improved.

In addition, countless through holes 22 as ventilation means are provided.
f was formed in the hose 21 forming the exhaust passage B3,
It may be formed in a connecting pipe forming the exhaust passage B4.

[0054]

According to the first aspect of the present invention, the ventilation means provided in the hose which forms the exhaust passage allows the exhaust to be slowly dispersed to the surroundings from the hose without being concentrated and exhausted. Therefore, it is possible to reduce the possibility that dust is blown up by the exhaust.

According to the second aspect of the present invention, the minute through-holes formed in the hose prevent the exhaust from being concentrated, and allow the exhaust to be slowly dispersed to the surroundings from the hose. The fear of soaring can be reduced.

According to the third aspect of the present invention, since the hose is formed of a gas-permeable member, the exhaust is not concentrated and exhausted, but can be slowly dispersed around the hose and exhausted. It is possible to reduce the possibility of dust rising.

According to the fourth aspect of the present invention, since the inner hose can be protected by the outer hose, the possibility that the inner hose is damaged can be reduced.

According to the fifth aspect of the present invention, since the ventilation means provided in the hose does not exhaust the air in a concentrated manner, the air can be slowly exhausted from the hose to the surroundings, so that the exhaust air blows the dust. Fear can be reduced.

According to the sixth aspect of the present invention, the minute through-holes formed in the hose prevent the exhaust from being concentrated, and allow the exhaust to be slowly dispersed to the surroundings from the hose. The fear of soaring can be reduced.

According to the seventh aspect of the present invention, since the hose is formed of a breathable member, the exhaust is not concentrated and exhausted, but can be slowly dispersed around the hose and exhausted. It is possible to reduce the possibility of dust rising.

According to the eighth aspect of the present invention, since the inner hose can be protected by the outer hose, the possibility of damaging the inner hose can be reduced.

According to the ninth aspect of the present invention, since the ventilation means provided in the pipe does not exhaust the air in a concentrated manner, the air can be slowly scattered and discharged from the pipe to the surroundings. Fear can be reduced.

According to the tenth aspect of the present invention, the minute through-holes formed in the pipe allow the exhaust to be slowly dispersed around the pipe without being exhausted intensively. The fear of soaring can be reduced.

According to the eleventh aspect of the present invention, since the inner pipe can be protected by the outer pipe, the possibility of the inner pipe being damaged can be reduced.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of the overall configuration showing a vacuum cleaner according to the present invention, in which a part of a hose is omitted.

FIG. 2 is an enlarged sectional view of a main body of the electric vacuum cleaner.

FIG. 3 is an enlarged sectional view showing a state in which a hose is connected to a hose connection part on a main body side of the vacuum cleaner.

FIG. 4 is a cross-sectional view in a state where a hose in FIG. 3 is omitted.

FIG. 5 is a side view, partially broken away, of a hose of the vacuum cleaner.

FIG. 6 is a partially cutaway side view of the outer hose in FIG. 5;

FIG. 7 is a partially cutaway side view of the inner hose in FIG. 5;

FIG. 8 is a sectional view of a grip portion of the electric vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 14 Electric blower 21 Hose 22 Outer hose 22f Through-hole (venting means) 23 Inner hose 32 Connecting pipe 32b Outer cylindrical part 32c Inner cylindrical part 33 Suction tool A2-A6 Intake flow path B1-B6 Exhaust flow path

Claims (11)

[Claims] 1. A vacuum cleaner hose comprising a flexible hose having an exhaust passage and an intake passage formed therein, wherein said hose forming said exhaust passage has ventilation means formed therein. Characteristic vacuum cleaner hose. 2. The hose for an electric vacuum cleaner according to claim 1, wherein said ventilation means is constituted by a minute through hole formed in said hose. 3. The hose for a vacuum cleaner according to claim 1, wherein the hose is formed of a breathable member. 4. The hose according to claim 1, wherein the hose has a double structure including an outer hose and an inner hose, and an exhaust passage is provided between the outer hose and the inner hose.
The hose for an electric vacuum cleaner according to any one of claims 3 to 3. 5. A vacuum cleaner comprising: a hose, a connection pipe, and a suction tool connected to a cleaner body having a built-in electric blower, and an intake flow passage and an exhaust flow passage for circulating exhaust gas from the electric blower. A vacuum cleaner wherein ventilation means is formed in a hose forming the exhaust passage. 6. The vacuum cleaner according to claim 5, wherein the ventilation means is constituted by a minute through hole formed in the hose. 7. The vacuum cleaner according to claim 5, wherein the hose is formed of a breathable member. 8. The hose according to claim 5, wherein the hose has a double structure including an outer hose and an inner hose, and an exhaust passage is provided between the outer hose and the inner hose.
The vacuum cleaner according to claim 7. 9. An electric vacuum cleaner comprising: a hose, a connecting pipe, and a suction tool connected to a cleaner body having a built-in electric blower, and an exhaust passage for circulating exhaust air from the electric blower formed in a suction passage. A vacuum cleaner wherein ventilation means is formed in the connecting pipe forming the exhaust passage. 10. The vacuum cleaner according to claim 9, wherein the ventilation means is constituted by a minute through hole formed in the connection pipe. 11. The connecting pipe has a double structure including an outer tubular portion and an inner tubular portion, and an exhaust passage is provided between the outer tubular portion and the inner tubular portion. The vacuum cleaner according to claim 9 or 10, wherein