KR20010049848A - Hoses for an Electric Cleaner and an Electric Cleaner - Google Patents

Abstract

PURPOSE: To provide a vacuum cleaner with a hose reduceable in poof operation, allowing exhaust air from an electric blower built in a cleaner body to be returned into a suction implement via a hose and a pipe. CONSTITUTION: This vacuum cleaner has a suction passage and an exhaust passage formed in a hose 21, a pipe and a suction implement to be connected to a cleaner body in which an electric blower is built, the exhaust passage serving for returning exhaust air from the electric blower. The hose 21 consists of an outside hose 22 and an inside hose 23 to form the exhaust passage and the suction passage, and a long member is wound on the outside hose 22 and the inside hose 23 to form a tubular, flexible hose which assures easier flexibility of the outside hose 22 than that of the inside hose 23.

Description

Hoses for an Electric Cleaner and an Electric Cleaner}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner, and more particularly, to an exhaust reflux type electric vacuum cleaner and a hose configured to return the exhaust of an electric blower built in a vacuum cleaner body to a suction port or the like through a hose and a pipe.

In the general floor moving type vacuum cleaner, all the exhaust of the electric blower built in the cleaner main body is discharged to the outside from the exhaust hole formed in the back of the main body, but since all the exhaust of the electric blower is exhausted, Is flushed with. Therefore, due to the exhaust wind, the particles that are stagnant on the floor surface or the carpet are blown up, and irrationality is generated in the room.

For example, in order to reduce the exhaust air blown out to the outside or to increase the dust collection effect, for example, Japanese Unexamined Patent Application Publication No. 39-36553 or Japanese Patent Application Laid-Open No. 9-135795 are disclosed. As described above, there has been proposed an electric vacuum cleaner in which an exhaust flow path for refluxing part or all of the exhaust of the electric blower is formed in the hose, the pipe, and the suction port connected to the cleaner main body.

However, in the above, the hose and the pipe have a double structure, and an intake flow path is formed on the inside and an exhaust flow path is formed on the outside. However, no specific consideration has been given to the specific structure of the hose.

Moreover, since the hose and pipe are comprised by the double structure mentioned above, the hose became difficult to bend and there existed a fault that the operability of a hose became bad.

An object of the present invention is to provide an electric vacuum cleaner having a hose capable of reducing deterioration in operability in exhausting the electric blower incorporated in the vacuum cleaner body through a hose and a pipe to reflux.

Brief Description of Drawings Fig. 1 is a side sectional view of an overall configuration showing an electric vacuum cleaner showing an embodiment of the present invention, and the middle portion of the hose is omitted.

2 is an enlarged cross-sectional view of a main body portion of the vacuum cleaner.

3 is an enlarged cross-sectional view of a state in which a hose is connected to a hose connecting portion of the main body side of the vacuum cleaner.

4 is a cross-sectional view of a state in which the hose in FIG. 3 is omitted.

5 is a side view of a portion of the hose of the electric cleaner broken.

It is a side view which broke a part of outer hose in FIG.

FIG. 7 is a side view of a portion of the inner hose in FIG. 5 broken. FIG.

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

* Description of the sign *

1: cleaner body 14: electric blower

17: hose connection to the body

18: Outer tube of the hose connection on the body side

18b: Outer rib of the hose connection on the body side

19: inner tube of the main body side hose connection

19b: Inner rib of the hose connection on the body side

21: hose 22: outer hose

23: inner hose 27: hose connection

28: outer tube of hose connection

28b: Outer rib of hose connection

29: inner tube of hose connection

29b: Inner rib of hose connection

32: connector 33: inlet

A2 to A6: intake flow path B1 to B6: exhaust flow path

The 1st means for solving the said subject consists of an outer hose and an inner hose, The hose for electric cleaners which comprised each hose by the flexible hose which wound the long member, and joined the joint part and formed in tubular shape. As the outer hose, the inner hose is formed to be more flexible than the inner hose.

In 1st means for solving the said subject, it is preferable to form the said outer hose from the material which is easier to bend than an inner hose.

In 1st means for solving the said subject, it is preferable to make thickness of the joining member which joins the junction part of the said outer hose thinner than the thickness of the joining member which joins the junction part of an inner hose.

In 1st means for solving the said subject, it is preferable to make thickness of the elongate member which comprises the said outer hose thinner than the thickness of the elongate member which comprises an inner hose.

In 1st means for solving the said subject, it is preferable to make the width | variety of the elongate member which comprises the said outer hose narrower than the width of the elongate member which comprises an inner hose.

A second means for solving the above problems is an electric vacuum cleaner in which an exhaust flow path for refluxing the intake flow path and the exhaust of the electric blower is formed in a hose, a connecting pipe, and an intake port connected to a cleaner body having an electric blower built therein, The hose is composed of an outer hose and an inner hose to form an exhaust flow path and an intake flow path, and at the same time, each of the hoses is wound around a long member to join a joint to form a tubular flexible hose. The outer hose is characterized by being formed more easily bent than the inner hose.

In 2nd means for solving the said subject, it is preferable to form the said inner hose from the material which is more flexible than an outer hose.

In 2nd means for solving the said subject, it is preferable to make thickness of the joining member which joins the junction part of the said outer hose thinner than the thickness of the joining member which joins the junction part of an inner hose.

In 2nd means for solving the said subject, it is preferable to make thickness of the elongate member which comprises the said outer hose thinner than the thickness of the elongate member which comprises an inner hose.

In 2nd means for solving the said subject, it is preferable to make the width | variety of the elongate member which comprises the said outer hose narrower than the width of the elongate member which comprises an inner hose.

1 to 8 show one embodiment of the present invention and will be described below based on these drawings.

1 is a vacuum cleaner main body, and as shown in FIG. 2, it consists of the upper case 2, the lower case 3, and the dust collection lid 4, and the hose connection port to which the hose side connection part 17 which is mentioned later is connected to the front side of the cleaner main body 1 is mentioned later. 5 is formed, and the slit-shaped exhaust hole 6 is formed in the back side. In the bottom of the inside of the vacuum cleaner main body 1, the exhaust passage B1 which is partitioned with the upper space of the inside of the vacuum cleaner main body 1 by the partition 7 at the bottom of the inside of the vacuum cleaner main body 1 by the partition 7, and communicates with the said hose connection 5, An external exhaust flow path C communicating with the exhaust hole 6 is formed. The partition 7 is provided with a partition wall 8 that partitions the space above the partition 7 back and forth.

9 is a dust collection chamber formed in the front side of the said partition wall 8, and the hose insertion opening 9a is formed in the front side on the hose connection port 5 and concentric circles. In the dust collecting chamber 9, a dust collecting stand attaching case 11 for detachably fixing the dust collecting table 10 is detachably stored, so that the opening of the dust collecting table 10 faces the hose inserting hole 9a of the dust collecting chamber 9 in a mounted state. Doing.

12 is a dust filter attached to the partition wall 8, which is located on the rear side of the dust collecting table 10 to remove fine dust.

13 is an electric blower storage chamber formed at the rear side of the partition wall 8, in which the electric blower 14 is housed. An opening 13a is formed below the electric motor storage chamber 13 so as to communicate the electric motor storage chamber 13 with the exhaust flow path B1 and the external exhaust flow path C. The exhaust of the electric blower 14 is driven by the driving of the electric blower 14 to the lower case 3. It is divided by the rib 15 installed on the side, and is led from the opening 13a to the hose connecting port 5 through the exhaust flow path B1, and at the same time, a part of the exhaust filter 16 is provided in the external exhaust flow path C and the exhaust hole 6 in the opening 13a. Through the exhaust hole 6 is exhausted out of the cleaner body 1.

17 is a main body side hose connection part which is connected to the hose 21 and is attached to the hose connection port 5 mentioned later. As shown in FIG. 3 and FIG. 4, the outer tube 18 of a cylindrical shape, and several support ribs in this outer tube 18 are shown. It has a dual structure of an inner tube 19 integrally formed by 19a.

On one end mounted to the hose connecting port 5 of the outer tube 18 is formed a retaining tank 18a, which is latched on the locking part 5a installed at the hose connecting port 5, while the other end is formed in a screw shape. The side rib 18b is inclined with respect to the pipe axis direction.

The inner tube 19 is formed longer than the outer tube 18 such that one end of the hose fitting port 5 protrudes into the dust collecting chamber 9 from the hose inserting port 9a. On the other hand, the other end side is formed longer than the outer side tube 18, and the inner side rib 19b inclined in the same direction as the outer side rib 18b of the outer side tube 18 is formed in the outer peripheral side. 20 is a cylindrical cover provided so as to cover the side to which the hose 21 of the hose connection part 17 on the main body side is connected.

The main hose connecting part 17 latches the locking tank 18a at the hose connecting part 5 of the cleaner main body 1 so that the inner tube 19 of the main hose connecting part 17 protrudes into the dust collecting chamber 9 and communicates with the inside of the dust collecting chamber 9. Inner tube 19 is the intake flow path A2. The outer tube 18 communicates with the exhaust passage B1 inside the cleaner body 1, and the exhaust tube B2 is disposed between the outer tube 18 and the inner tube 19.

21 is a hose attached to the main body side hose connection part 17 and the hose connection part 27 mentioned later, and has a double structure which consists of an outer hose 22 and an inner hose 23 as shown in FIG.

As shown in Fig. 6, the outer hose 22 is made of a styrene-based elastomer, and a long member thinner than the inner hose 23 is wound in a screw shape, and the joint 22a at the widthwise end of the long member is made of polypropylene. It is formed in a tubular shape by joining with the attached adhesive, and screw-like protrusions 22b and 22c are formed in almost the center portion of the joint portion 22a and the elongated member in the width direction, respectively. In the protrusion 22b, the conductive coil 22d as the signal line is embedded, and the coil line 22e having the moldability in the protrusion 22c is incorporated. The strength of the hose 21 is preserved by the coil wires 22d and 22e of the outer hose 22. This outer hose 22 is made of a translucent material.

On the other hand, as shown in Fig. 7, the inner hose 23, like the outer hose, is wound around the long member made of styrene-based elastomer in a screw shape, and the joint 23a at the end in the width direction of the long member is joined with a binder made of polypropylene. Thereby, it is formed in a tubular shape, and screw-shaped protrusions 23b and 23c are respectively formed in the center portion in the width direction of the joint portion 23a and the elongate member.

Moreover, the said inner hose 23 is formed opaque by adding a coloring agent to a styrene-type elastomer, and is comprised so that an inner hose can be seen through the outer hose 22. FIG.

First, the hose 21 is screwed into the inner rib 19b with the inner winding direction of the inner hose 23 in the same direction as the inclination of the inner rib 19b of the hose connecting portion 17 on the main body side. At this time, since one end to which the hose 21 of the inner tube 19 is connected protrudes from the outer tube 18, the inner hose 23 can be inserted into the protruding portion once. Therefore, the inner hose 23 is easily made.

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

At this time, the inside of the inner hose 23 communicates with the intake flow path A2 of the main hose connection part 17, and becomes the intake flow path A3, while the outer hose 22 and the inner hose 23 communicate with the exhaust flow path B2 of the main hose connection part 17. It communicates and it becomes exhaust channel B3.

In addition, since the winding direction of the inner hose 23 and the winding direction of the outer hose 22 are in the same direction, the inner hose 23 and the outer hose 22 are in the same direction as the direction that is easy to bend and the twistable direction. Therefore, when the hose 21 is twisted or bent while the vacuum cleaner body 1 is in use, the outer hose 22 and the inner hose 23 follow each other and twist or bend, so that the outer hose 22 and the inner hose 23 are respectively twisted and twisted. Without resisting each other, the flexibility and elasticity of the hose 21 is ensured.

24 is a grip part to which a hose 21 is connected at one end, and a connector 32 which will be described later is attached at the other end, and a handle part 35 to which the connector 32 is mounted, and a hose 21 is connected to one end and the other end is a handle part 35 It consists of a hose connection part 27 to be mounted on.

The hose connecting portion 27 has a double structure consisting of a cylindrical outer tube 28 and an inner tube 29 in which support ribs 29a are integrally formed on the outer tube 28 so as to cover the side to which the hose 21 is connected. Cover 31 is installed.

On the outer circumference of the outer tube 28 and the inner tube 29, the outer ribs 28a and the inner ribs 29a of the same slope as the outer ribs 18b and the inner ribs 19b of the main hose connection part 17 are formed, respectively, and the outer side of the hose 21 The hose 22 and the inner hose 23 can be twisted and mounted in the same direction. Thereby, assembly work becomes easy.

At this time, the outer tube 28 and the inner tube 29 communicate with the exhaust flow path B3 of the hose 21, and become an exhaust flow path B4. Moreover, the inside of the inner pipe 29 communicates with the intake flow path A3 in the hose 21, and becomes the intake flow path A4.

The handle part 35 is composed of a Japanese letter U-shaped tubular part 25 and a handle 26 spoken above the tubular part 25, and a mounting hole 25a to which the connecting pipe 32 is mounted is formed. The clamp 25b is provided in the upper part of the mounting opening 25a. In addition, a cylindrical portion 30 is formed therein which communicates with the mounting hole 25a and is inserted into the end portion of the inner tube 29, and communicates the inside of the cylindrical portion 30 with the intake passage A4 of the inner tube 29 to become the intake passage A5. The outside of the cylindrical part 30 and the outside of the grip part 24 communicate with the exhaust flow path B4 formed from the inner pipe 29 and the outer pipe 28 to form the exhaust flow path B5.

32 is a connection pipe which is latched by the clamp 25b and is attached to the mounting hole 25a of the grip part 24, and is formed by connecting two pipes 32a. The connecting pipe 32 is constituted by an outer cylindrical portion 32b having a substantially circular cross section, and an inner cylindrical portion 32c which is eccentric with the outer cylindrical portion 32b and is formed integrally with the outer cylindrical portion 32b. The inner barrel 32c and the outer barrel 32b form a crescent shaped space. And when this connecting pipe 32 is attached to the grip part 24, while the inner cylindrical part 32c communicates with the intake flow path A5 of the grip part 24, and forms the intake flow path A6 inside, the outer cylindrical part 32b and the inside Between the cylindrical part 32b and the inner cylindrical part 32c, it communicates with the exhaust flow path B5 of the grip part 24, and forms the exhaust flow path B6.

In addition, since the exhaust air passing through the exhaust flow path B6 is clean air from which dust is removed through the dust collection zone 10 and the dust filter 12 of the cleaner body 1, almost circular, which is a cross section considering the clogging caused by the dust as in the inner cylindrical portion 32c. In view of the fact that it does not need to be formed in the present embodiment, in the present embodiment, as described above, the exhaust passage B6 has a nearly crescent cross section, and the outer cylindrical portion 32b is formed so that the cross section is almost circular.

33 is a suction port connected to the connection pipe 32, and the fitting pipes 33a and 33b to which the connection pipe 32 are connected are formed in the concentric double structure, and the fitting part with the connection pipe 32 has the same shape as the connection pipe 32. As shown in FIG.

By the way, in the use of the vacuum cleaner configured as described above, the air in which the dust sucked in the suction port is mixed by the suction of the electric blower 14 through the intake passage A5 of the connector 32 and the intake passage A3 of the hose 21. Coming into me. In the vacuum cleaner main body 1, the dust is removed by the dust collecting table 10, and the air cleaned by the dust filter 12 is attracted to the electric blower 14, and the electric blower 14 is cooled.

A part of the exhaust of the electric blower 14 is discharged to the outside from the exhaust hole 6 of the cleaner body 1, and the other passes through the exhaust flow path B3 of the hose 21 from the exhaust flow path B1 of the cleaner body 1. At this time, since the direction of the protrusions 22b and 22c of the outer hose 22 and the direction of the protrusions 23b and 23c of the inner hose 23 are formed in the same direction, between the outer hose 22 and the inner hose 23 by the protrusions 23b and 23c The aeration resistance to the air flowing through the air is reduced, and the loss in the exhaust passage B3 of the hose 21 can be reduced.

As mentioned above, the thickness of the elongate member which comprises the outer hose 22 is made thinner than the thickness of the elongate member which comprises the inner hose 23, and the outer hose 22 is formed to bend more easily than the inner hose 23. As shown in FIG.

Since the inside of the inner hose 23 is the intake flow path A3, the inside of the inner hose 23 becomes the negative pressure (negative pressure), and between the outer hose 22 and the inner hose 23 is the exhaust flow path B3, Positive pressure). Therefore, while the inner hose 23 is deformed inwardly, the inner hose 23 is less likely to be bent than the outer hose 22, so that the inner hose 23 is prevented from being deformed in the radial direction by the intake air pressure. It is possible to prevent the increase in the air permeation resistance of the dust due to the reduction in the cross-sectional area due to the deformation inward of the inner hose 23.

In addition, even when a force that crushes the hose 21 due to an accidental stepping on the hose 21 is applied, it is possible to prevent deformation of the inner hose 23, which is difficult to check from the outside of the outer hose 22, and has a double structure hose. 21 Can solve unique problems.

In addition, since the outer hose 22 is made to bend easily, the force to bend the hose 21 can be reduced as much as the outer hose 22 is made to bend, so that the deterioration of the operability of the hose 21 can be reduced.

After passing through the exhaust flow path B3 of the hose 21, it passes through the exhaust flow path B6 of the connecting pipe 32, refluxed to the intake port 33, and again with the dust blown up by this exhaust wind. It will cycle.

By circulating a part of the exhaust as described above, the exhaust wind blown out to the outside becomes weak, so that dust in the room during cleaning can be effectively suppressed.

Moreover, in the said embodiment, although the thickness of the long member which comprises the outer hose 22 was made thinner than the thickness of the long member which comprises the inner hose 23, the outer hose 22 was easy to bend, but the outer hose 22 is comprised. By making the width of the elongated member smaller than the width of the elongated member constituting the inner hose 23 and shortening the interval between the joint portions 22a, the outer hose 22 may be easily bent, and even in this configuration, it is the same as the above-described embodiment. Effect.

In the above embodiment, the thickness of the long member constituting the outer hose 22 is made thinner than the thickness of the long member constituting the inner hose 23 so that the outer hose 22 is easily bent, but the outer hose 22 The thickness of the protrusion 22b (bonding member) for joining the joints may be thinner than the thickness of the protrusion 23b (bonding member) for joining the joints of the inner hose 23, so that the outer hose 22 may be easily bent, or may be configured as such. The effect similar to embodiment mentioned above is exhibited.

Hose 21 is typically made of PVC. However, since incineration causes dioxins that adversely affect the environment, in the above-described embodiment, both the outer hose 22 and the inner hose 23 are formed of styrene-based elastomers in consideration of the environment.

In order to make the outer hose 22 more flexible than the inner hose 23, the inner hose 23 is formed of an olefin elastomer, and the outer hose 22 is formed of a material that is more flexible than the inner hose 23, such as an olefin elastomer. The hose 22 may be easily bent, and even in this configuration, the same effects as in the above embodiment can be obtained.

In addition, since the outer hose 22 may be bent by forming the outer hose 22 by a material that is more flexible than the inner hose 23, the material of the hose 21 is not limited to the elastomer used in the present embodiment.

According to the present invention, by forming the outer hose to bend more easily than the inner hose, the inner hose is negative pressure in the inner hose, plus the positive pressure received from the exhaust flow path between the inner hose and the outer hose, or It is possible to prevent deformation in the radial direction by pressure, and to prevent the increase of air permeation resistance of the dust due to the deformation of the inner hose, and at the same time, the force to bend the hose as much as the outer hose is easily bent. This can reduce the deterioration of the operability of the hose.

Claims (10)

It consists of an outer hose and an inner hose, and each hose is a hose for electric cleaners composed of a flexible hose formed by joining a joint to form a tubular shape by winding a long member, and the outer hose is easier to bend than an inner hose. An electric cleaner hose, characterized in that formed. The hose for electric cleaners of Claim 1 which formed the said outer hose from the material which is easier to bend than an inner hose. The thickness of the joining member which joins the junction part of the said outer hose was made thinner than the thickness of the joining member which joins the junction part of an inner hose, The hose for electric cleaners of Claim 1 characterized by the above-mentioned. The thickness of the long member which comprises the said outer hose was made thinner than the thickness of the long member which comprises an inner hose, The hose for electric cleaners of Claim 1 characterized by the above-mentioned. The width | variety of the elongate member which comprises the said outer hose was made narrower than the width of the elongate member which comprises an inner hose, The hose for electric cleaners of Claim 1 characterized by the above-mentioned. An electric vacuum cleaner formed by forming an exhaust flow path for refluxing an intake flow path and an exhaust of an electric blower in a hose, a connection pipe, and an intake port connected to a cleaner body incorporating an electric blower, wherein the hose comprises an outer hose and an inner hose. In addition to forming an exhaust flow path and an intake flow path, each of the hoses is wound around the elongated member, and the hoses are formed to bend more easily than the inner hoses by using a flexible hose formed by joining the joints to form a tubular shape. Electric cleaner, characterized in that. The electric cleaner according to claim 6, wherein the outer hose is formed of a material that is more flexible than the inner hose. The thickness of the joining member which joins the junction part of the said outer hose was made thinner than the thickness of the joining member which joins the junction part of an inner hose, The hose for electric cleaners of Claim 6 characterized by the above-mentioned. The thickness of the elongate member which comprises the said outer hose was made thinner than the thickness of the elongate member which comprises an inner hose, The electric vacuum cleaner of Claim 6 characterized by the above-mentioned. The width | variety of the elongate member which comprises the said outer hose was made narrower than the width of the elongate member which comprises an inner hose, The hose for electric cleaners of Claim 6 characterized by the above-mentioned.