JP2003000499A - Extension tube for vacuum cleaner and vacuum cleaner using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extension tube whose length is adjustable with one-touch operation for a vacuum cleaner and the vacuum cleaner using it. SOLUTION: In the extension tube for the vacuum cleaner consisting of an inner pipe 3 sliding in a large-diameter outer tube 1 and the outer tube 1, a driving source 9 is provided for sliding the inner pipe 3 in the outer pipe 1 to expand or reduce the extension tube for the vacuum cleaner by driving the driving source adjust the length of the tube with one-touch operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extension tube for an electric vacuum cleaner whose length can be adjusted with one touch and an electric vacuum cleaner using the extension tube.

[0002]

2. Description of the Related Art A conventional extension tube for an electric vacuum cleaner will be described with reference to FIG.

The inner tube 102 is composed of an outer tube 101 connected to the vacuum cleaner body (not shown) side and an inner tube 102 connected to the vacuum cleaner suction tool (not shown) side.
Is configured so that it can be taken in and out of the outer tube 101, and is fixed at an appropriate protruding position.

The outer pipe 101 is provided with a connecting portion 103 for connecting to the main body side and an operating portion 104 for releasing the engagement state between the outer pipe 101 and the inner pipe 102.

A plurality of engagement grooves 105 are formed in the inner pipe 102 at predetermined intervals, and an engagement portion 106 that engages with the engagement groove 105 is formed at the end of the operation portion 104.

The operation of the above configuration is as follows. That is, when the operation portion 104 is pushed, the engagement portion 106 is disengaged from the engagement groove 105, and the inner pipe 102 is slidable with respect to the outer pipe 101.

[0007]

In the conventional extension tube for a vacuum cleaner, in order to adjust the length of the extension tube, the operating portion 104 is pushed by one hand to engage the engaging portion 106. Since it was necessary to pull the inner tube 102 out of the groove 105 and pull the inner tube 102 with the other hand while keeping the inner tube 102 slidable, it takes time to adjust the length of the extension tube. There was a problem.

The present invention is intended to solve the above conventional problems, and an object thereof is to provide an extension tube for an electric vacuum cleaner whose length can be adjusted with one touch.

[0009]

In order to achieve the above object, the present invention provides a hose having one end connected to a cleaner body,
In the extension tube for the electric vacuum cleaner, the other end of which is connected to a suction tool for sucking dust and which includes an outer tube having a large diameter and an inner tube that slides in the outer tube, Since the drive source for sliding is provided, and the extension tube for the electric vacuum cleaner is extended or shortened by driving the drive source, the length can be adjusted with one touch.

[0010]

According to a first aspect of the present invention, one end is connected to a hose connected to the cleaner body, and the other end is connected to a suction tool for sucking dust. An extension tube for an electric vacuum cleaner, which comprises an inner tube that slides inside the tube, wherein a drive source for sliding the inner tube inside the outer tube is provided, and the electric vacuum cleaner is driven by driving the drive source. Since the extension tube for use is extended or shortened, the length can be adjusted with one touch.

According to a second aspect of the present invention, between the outer pipe and the inner pipe, a rotating body provided with a spring spring inside the outer pipe is provided so as to contact the outer periphery of the inner pipe, and the spring spring is tightened or loosened. The rotating body is rotated by, the inner tube slides in the outer tube by the rotation of the rotating body, and an operation unit for operating the rotation of the rotating body is provided. When loosened, the rotating body rotates and the inner tube in contact with the rotating body slides, and when the loosening of the mainspring is stopped, the rotating body stops,
The length can be adjusted with one touch.

According to a third aspect of the present invention, two rotating bodies are provided, and one of the mainspring springs is wound in the opposite direction to the other, and when one of the mainspring springs is loosened, the other mainspring spring is tightened. The expansion and contraction of the pipe can be easily switched.

According to a fourth aspect of the present invention, the rotating body is formed of a roller portion made of a soft material and a gear portion in which a mountain portion has a diameter substantially the same as the diameter of the roller portion, and an inner pipe is engaged with the gear portion. When the mainspring spring is loosened, the gear part meshes with the gear rail and slides the inner pipe, while another rotating body has the roller part on the outer surface of the inner pipe. Since the mainspring rotates as it rotates along with it, the extension tube can be reliably expanded and contracted.

According to a fifth aspect of the present invention, a fixed body for fixing the shaft portion of the rotating body is provided between the outer pipe and the inner pipe, and the fixed body is made movable by the operation unit. When the extension tube is operated so as to extend, the fixed body moves and acts on the rotating body, loosens the mainspring spring that is tightened to extend the extension tube, and the other rotating body also rotates and tightens the mainspring spring. The height can be adjusted and the extension tube can be easily expanded or contracted.

According to a sixth aspect of the present invention, the operating portion is provided at a substantially end portion of the outer pipe on the inner pipe joining side, and the operating portion can be easily operated and the length can be adjusted with one touch. .

According to a seventh aspect of the present invention, there is provided a cleaner main body having an electric blower for emitting suction air and having a connection port communicating with the electric blower, a hose having one end connected to the connection port, and the hose. An electric cleaning device comprising an extension tube for a vacuum cleaner according to any one of claims 1 to 6, further comprising: a suction tool communicating with the hose, the other end of which is connected to the hose and the other end of which is connected to the suction tool. Thus, it is possible to provide an electric vacuum cleaner that can be cleaned by adjusting the length of the extension tube with one touch and can be easily put in the stored state even when it is carried.

[0017]

EXAMPLES Example 1 Hereinafter, a first example of the present invention will be described.
This will be described with reference to FIGS.

In FIG. 1, an outer tube 1 connected to a hose (not shown) connected to a cleaner body (not shown),
Connecting member 2 connected to a suction tool (not shown), and outer tube 1
And an inner pipe 3 that connects the connecting member 2 to each other. The inner pipe 3 is configured to be able to be taken in and out of the outer pipe 1, and is fixed at an appropriate protruding position.

The outer pipe 1 has a fitting portion 4 for connecting to a hose (not shown) and an operating portion 5 for inserting and removing the inner pipe 3 on the inner pipe 3 side of the outer pipe 1. On the surface of the outer tube 1 provided at the end and in the vicinity of the operation section 5, there are provided indications of extension and contraction. Further, the connecting member 2 has a connecting portion 6 for connecting to a suction tool (not shown), and an extension for hooking the extension pipe 50 on an engaging portion (not shown) such as a main body when housed. A tube stopper 7 is formed. A guide body 8 is provided at the end of the outer pipe 1 on the inner pipe 3 side so as to surround the inner pipe 3 so that the inner pipe 3 can slide.

In FIG. 2, two rotating bodies 9 are provided between the outer tube 1 and the inner tube 3 as a driving source for sliding the inner tube 3, one at the upper portion and the other at the lower portion of the inner tube 3, and a total of two rotors are provided. The tube 3 is a rotating body 9
The part that comes into contact with is formed flat. The rotating body 9 is formed of a roller portion 10 and a gear portion 11 made of a soft material such as rubber. The roller portion 10 is formed on both sides of the gear portion 11 so that the gear rail 12 meshes with the gear portion 11 on the surface of the inner pipe 3 by the width of the gear portion 11 and the gear rail 12 includes the inner pipe 3. It is provided so as not to come out of the surface of.

The two rotating bodies 9 are connected by a fixed body 14 for fixing the shaft portions 13 to each other, and the fixed body 14 is connected to the operating section 5. The operating section 5 is fixed in the vertical direction.
Also, it is designed to move together with the rotating body 9.

In FIGS. 3 and 4, a mainspring spring 15 as a power source for rotating the rotary body 9 is provided inside the rotary body 9, and the mainspring springs 15 in the upper and lower rotary bodies 9 are wound in opposite directions to one side. ing. The diameter of the crest portion of the gear portion 11 is formed to be substantially the same as the diameter of the roller portion 10.

The operation of the above configuration is as follows.

When it is desired to extend the length of the extension pipe, the operating portion 5
Is moved in the display direction of "stretch", the mainspring spring 15 that has been tightened loosens, the rotor 9 rotates, and the inner tube 3 pops out due to friction with the inner tube 3. At this time, this rotating body 9
Is pressed against the inner pipe 3, and the gear portion 11 is a gear rail 12
Meshes with. Further, since the other rotating body 9 catches the inner tube 3 only at the roller portion 10 during this period, the power spring 15 inside the rotating body 9 is tightened. On the contrary, when it is desired to shorten the length, the length of the extension tube can be adjusted with one touch because it automatically shrinks when the operation unit 5 is moved in the opposite direction.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

An electric blower 57 for emitting suction air and a dust collecting chamber 58 for collecting dust are formed in front of the cleaner body 51, and a hose made of a soft material communicates with the dust collecting chamber 58. The connection port 52 is formed so as to connect the connection body 54 provided at one end of 53. At the other end of the hose 53, the extension tube 50 for the electric vacuum cleaner described in the first embodiment.
To one end of the vacuum cleaner extension tube 50, and a suction tool 56 for sucking dust is connected to the other end of the vacuum cleaner extension tube 50 to form a suction flow path. Further, the hose 53 is provided with a hand portion 55 that controls the driving operation of the cleaner body 51 and is a handle of the user.

The operation of the above configuration is as follows.

When the operation of the cleaner main body 51 is started at the hand portion 55, the electric blower 57 operates to generate suction air, so that the suction tool 56 and the vacuum cleaner extension tube 5 are generated.
0 Further, dust is sucked in the hose 53, and the dust collecting chamber 5
8, the exhaust air is discharged from the cleaner body 51.

In the electric vacuum cleaner to which the extension tube 50 is connected, the length of the extension tube can be adjusted by one-touch operation for cleaning, and the electric vacuum cleaner can be easily put in the housed state when carried.

[0030]

According to the present invention, it is possible to provide an extension tube for an electric vacuum cleaner whose length can be adjusted with one touch and an electric vacuum cleaner using the extension tube.

[Brief description of drawings]

FIG. 1 is an overall view of an extension tube for an electric vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the extension tube for the electric vacuum cleaner.

FIG. 3 is a sectional view of a main part of the extension tube for the electric vacuum cleaner.

FIG. 4 is a perspective view of a rotating body of the extension tube for the electric vacuum cleaner.

FIG. 5 is an overall perspective view for a vacuum cleaner showing a second embodiment of the present invention.

FIG. 6 is an overall cross-sectional view of a conventional extension tube for an electric vacuum cleaner.

[Explanation of symbols]

1 outer tube 3 inner tube 5 Operation part 8 Guide body 9 rotating body 15 Wind-up spring

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Katsuyuki Ota             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 3B057 BA09 BA26

Claims (7)

[Claims] 1. A hose having one end connected to a cleaner body, and the other end connected to a suction tool for sucking dust, the outer tube having a large diameter and an inner tube sliding inside the outer tube. An extension tube for an electric vacuum cleaner, comprising: a drive source for sliding the inner tube in the outer tube. 2. A rotating body provided with a mainspring spring inside the outer pipe and abutting against the outer periphery of the inner pipe, and the rotating body is rotated by tightening or loosening the mainspring spring. 2. The extension tube for an electric vacuum cleaner according to claim 1, further comprising an operation section for operating the rotation of the rotating body while the inner tube slides in the outer tube by the rotation of the rotating body. 3. The extension tube for an electric vacuum cleaner according to claim 1, wherein two rotating bodies are provided, and one of the main springs is wound in a direction opposite to the other. 4. The rotating body is formed of a roller portion made of a soft material and a gear portion having a mountain portion whose diameters are substantially the same as the diameter of the roller portion, and an inner pipe provided with a gear rail so as to mesh with the gear portion. An extension tube for an electric vacuum cleaner according to claim 2 or 3. 5. A fixing body for fixing a shaft portion of a rotating body between an outer pipe and an inner pipe, and the fixing body is movable by an operating portion. Extension tube for vacuum cleaner. 6. The extension tube for an electric vacuum cleaner according to claim 1, wherein the operating portion is provided at a substantially end portion of the outer tube on the inner tube joining side. 7. A cleaner body having a built-in electric blower that emits suction air and having a connection port communicating with the electric blower, a hose having one end connected to the connection port, and a suction tool communicating with the hose. An electric vacuum cleaner comprising the extension tube for the electric vacuum cleaner according to any one of claims 1 to 6, wherein one end is connected to the hose and the other end is connected to the suction tool.