JP2003093294A - Telescopic pipe for vacuum cleaner and vacuum cleaner using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a usable telescopic pipe for a vacuum cleaner which can be extended and contracted with a single motion by utilizing exhaust pressure from a motor-driven blower and a vacuum cleaner using the same. SOLUTION: This telescopic pipe 1 for the vacuum cleaner, each of which includes a suction air passage 11 and an exhaust air passage 8, causes an extending operation or a sliding force for helping the extending operation by exhaust air, therefore, the exhaust air from the motor-driven blower enables an easy extension and contraction of the telescopic pipe 1 for the vacuum cleaner.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention utilizes pneumatic pressure,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a user-friendly telescopic pipe for an electric vacuum cleaner, which can easily expand and contract a telescopic pipe for an electric vacuum cleaner, and an electric vacuum cleaner using the same.

[0002]

2. Description of the Related Art A conventional vacuum cleaner will be described with reference to FIGS.

FIG. 3 shows a telescopic pipe 17 for an electric vacuum cleaner in an exhaust circulation type electric vacuum cleaner, the inside of which is divided into two, one of which is an intake passage 17a for sucking dust,
The other is configured as an exhaust passage 17b for returning the exhaust from the electric blower 18 to the suction tool 19. Further, regarding the expansion and contraction configuration of the expansion pipe 17 for the electric vacuum cleaner, a plurality of recesses 21 are provided on the expansion pipe 20 side, and the fixed pipe 22.
On the side, a lock button 23 that engages with the concave portion 21 of the expandable pipe 2O is rotatably provided. The lock button 23 uses the force of a spring, and when the button is released, the lock button 23 is caught in the recess 21 and the expansion pipe 1 for the electric vacuum cleaner.
7 is fixed, and when the button is pressed, the lock button 23 is disengaged from the recess 21 to allow the telescopic pipe 17 for the electric vacuum cleaner to expand and contract.

The operation of the above configuration is as follows.

In FIG. 4, the exhaust air discharged from the electric blower 18 is the hose 24 and the expansion pipe 17 for the electric vacuum cleaner.
The dust sucked from the suction tool 19 while being discharged to the floor from the suction tool 19 via the exhaust passage 17b of the suction pipe 17 of the expansion pipe 17 for the electric vacuum cleaner and the hose 2
Dust is collected in the main body of the vacuum cleaner via 4. On the other hand, FIG.
As is clear from the above, the expansion and contraction of the expansion pipe 17 for the electric vacuum cleaner was performed by moving the expansion pipe 20 up and down while pressing the lock button 23 to adjust the length.

[0006]

However, in the above-mentioned conventional structure, the exhaust gas emitted from the electric blower 18 is returned to the suction tool 19 as it is, and is used only as an assistant for dust collection. A mechanical type was used for the expansion and contraction of the machine expansion / contraction pipe 17. for that reason,
When the expansion / contraction pipe 17 for the electric vacuum cleaner is expanded / contracted, it is necessary to expand / contract the sliding pipe 20 with the lock button 23 removed. In particular, when the telescopic pipe 17 for the electric vacuum cleaner is contracted from the fully extended state, the lock button 23 provided on the fixed pipe 22 side is pressed with one hand while the telescopic pipe 2O is pressed with the other hand. It was necessary to hold the part near the tip to draw it, which was very inconvenient for people with short hands such as children.

The present invention is intended to solve the above-mentioned conventional problems, and uses an expandable pipe for an electric vacuum cleaner which has a high usability and which can be extended with one touch by utilizing the exhaust pressure generated by an electric blower. The purpose is to provide a vacuum cleaner.

[0008]

In order to achieve the above object, the present invention is directed to an electric blower, which is provided in a cleaner body and emits suction air for sucking dust, and an intake air communicating with the intake side of the electric blower. The electric blower is a telescopic pipe for an electric vacuum cleaner that includes a passage and an exhaust passage that communicates with an exhaust side of the electric blower, and generates an extension operation or a sliding force that assists the extension operation by the exhaust gas emitted by the electric blower. This makes it possible to easily expand and contract the expandable pipe for the electric vacuum cleaner by utilizing the exhaust pressure.

[0009]

According to the first aspect of the present invention, an electric blower which is provided in a cleaner body and emits suction air for sucking dust, and an intake air which communicates with an intake side of the electric blower. The electric blower is a telescopic pipe for an electric vacuum cleaner that includes a passage and an exhaust passage that communicates with an exhaust side of the electric blower, and generates an extension operation or a sliding force that assists the extension operation by the exhaust gas emitted by the electric blower. This makes it possible to easily expand and contract the expandable pipe for the electric vacuum cleaner by utilizing the exhaust pressure.

According to the second aspect of the present invention, a fixed pipe having an intake passage and an exhaust passage, and a sliding pipe sliding in the exhaust passage are provided, and one end of the sliding pipe is provided. Is a telescopic pipe for electric vacuum cleaner with a passive part that receives the exhaust air from the electric blower, which makes it possible to easily expand and contract the telescopic pipe for the electric vacuum cleaner by using the exhaust pressure generated by the electric blower. is there.

According to the third aspect of the present invention, there is provided an extension pipe for an electric vacuum cleaner, wherein the exhaust pipe of the fixed pipe and the sliding pipe is provided with a communicating portion for communicating with the atmosphere. During operation of the electric blower with the stretchable pipe for expansion, the exhaust gas is released to the atmosphere, the flow of exhaust gas is stopped in the exhaust passage in the stretchable pipe for vacuum cleaner, and the suction operation is stopped. It can be prevented. Further, by blocking the hole in the communicating portion by hand, the flow of exhaust gas in the exhaust passage surrounded by the sliding pipe and the fixed pipe is stopped, so that the movement of the sliding pipe can be stopped. Therefore, it is possible to maintain a convenient length by closing the communication part when the expansion pipe for the electric vacuum cleaner extends to the right length.

According to a fourth aspect of the present invention, there is provided a main body of a cleaner having an electric blower for emitting suction air for sucking dust and a suction tool for sucking dust, the electric blower and the suction tool. A vacuum cleaner in which the air intake passage of the vacuum cleaner is connected to the vacuum cleaner expansion pipe according to any one of claims 1 to 3, and can be expanded / contracted by one-touch using exhaust pressure generated by an electric blower. A flexible pipe for a vacuum cleaner and a vacuum cleaner using the same can be provided.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 2 is an external view of an electric vacuum cleaner having a stretchable pipe 1 for an electric vacuum cleaner. A hose 3 in which a conductor is embedded is connected to the cleaner body 2, and an expandable telescopic pipe 1 for an electric vacuum cleaner is connected to the hose 3. Further, a suction tool 4 is connected to the tip of the expandable pipe 1 for the electric vacuum cleaner. Electric blower 5 of the cleaner body 2
Is controlled by the operation unit 6, and a power cord 7 is provided to supply power to the cleaner body 2. Further, the cleaner body 2 and the hose 3 are provided with an exhaust passage through which the exhaust air discharged from the electric blower 5 is circulated to the expandable pipe 1 for the electric vacuum cleaner.

FIG. 1 is a sectional view of a telescopic pipe 1 for an electric vacuum cleaner. The vacuum cleaner expansion pipe 1 is composed of a fixed pipe 9 connected to the hose 3 and a sliding pipe 10 connected to the suction tool 4, and the fixed pipe 9 includes an outer wall 9a and an inner wall 9b.
Has two passages formed by double pipes, the inner passage is an intake passage 11 for communicating with the intake side of the electric blower 5 to suck dust, while the outer passage is The exhaust passage 8 communicates with the exhaust side of the electric blower 5 and receives the exhaust gas. Each passage is connected to an intake passage 11 and an exhaust passage 8 on the hose 3 side. The sliding pipe 10 is configured to expand and contract the expandable pipe 1 for the electric vacuum cleaner by sliding in the exhaust passage 8 between the double pipes. Further, the sliding pipe 10 is adjacent to the pipe side forming the inner wall 9b, and an end portion thereof forms a flange-shaped passive portion 10a protruding outward.

Further, the end portion of this flange portion is the outer wall 9a.
It extends to the inside of the side pipe. On the other hand, the end portion of the fixed pipe 9 has a flange portion in which the pipe portion on the outer wall 9a side is bent inward, and when the telescopic pipe 1 for a vacuum cleaner is fully extended, each flange portion is in contact. This structure prevents contact and disconnection. Further, an airtight packing 12 is provided on the flange portion of the fixed pipe 9 side to keep the sliding portion of the sliding pipe 10 airtight.

A plurality of communicating portions 13 are provided in the longitudinal direction below the pipe forming the outer wall 9a of the fixed pipe 9 (on the side of the sliding pipe).

The operation of the above configuration is as follows.

The electric blower 5 in the main body 2 of the electric vacuum cleaner is moved by the operating portion 6, and the suction of the electric blower 5 sucks air from the suction tool 4. The sucked air passes through the expansion pipe 1 for the electric vacuum cleaner and the intake passage 11 of the hose 3,
It passes through the cleaner body 2 and the electric blower 5. The air that has passed through the electric blower 5 is returned as exhaust gas from the cleaner body 2 again to the expansion pipe 1 for the electric vacuum cleaner through the exhaust passage of the hose 3. The exhaust gas that reaches the vacuum cleaner telescopic pipe 1 flows into the exhaust passage 8 in the vacuum cleaner telescopic pipe 1, hits the flange portion of the sliding pipe 10, and slides in the direction in which the vacuum cleaner telescopic pipe 1 is extended. The moving pipe 10 can be moved. Also, the effect of the communication unit 13 is
The movement of the sliding pipe 10 can be stopped by blocking the flow of exhaust gas in the exhaust passage 8 surrounded by the sliding pipe 10 and the fixed pipe 9 by closing the hole by hand. Therefore, it is possible to maintain a convenient length by closing the communication portion 13 when the expandable pipe 1 for the electric vacuum cleaner extends to the right length. further,
Regardless of whether or not the electric vacuum cleaner 2 is in operation by providing a plurality of communication portions 13, when it is desired to fix the length of the vacuum cleaner telescopic pipe 1, by inserting a pin into the hole, the mechanical length can be increased. It is for making adjustments.

[0019]

According to the present invention, it is possible to provide an expandable pipe for an electric vacuum cleaner, which can be extended with one touch by utilizing the exhaust pressure generated by an electric blower, and an electric vacuum cleaner using the same.

[Brief description of drawings]

FIG. 1 is a sectional view of a telescopic pipe for an electric vacuum cleaner showing an embodiment of the present invention.

[Fig. 2] External view of the electric vacuum cleaner

FIG. 3 is a partial sectional view of a conventional telescopic pipe for an electric vacuum cleaner.

FIG. 4 is an external view of the electric vacuum cleaner.

[Explanation of symbols]

1 Telescopic pipe for vacuum cleaner 8 exhaust passage 9 Fixed pipe 10 Sliding pipe 10a Passive part 11 Intake passage 13 Communication

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takaaki Ogawa             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 3B057 BA09 BA27

Claims (4)

[Claims] 1. An electric blower, which is provided in a main body of the vacuum cleaner and emits suction air for sucking dust, an intake passage communicating with an intake side of the electric blower, and an exhaust passage communicating with an exhaust side of the electric blower. An expandable pipe for an electric vacuum cleaner, each of which includes an extension operation or a sliding force for assisting the extension operation, which is provided by exhaust air generated by the electric blower. 2. A passive pipe, which comprises a fixed pipe having an intake passage and an exhaust passage, and a sliding pipe that slides in the exhaust passage, and a passive portion for receiving exhaust gas from an electric blower at one end of the sliding pipe. An extendable pipe for an electric vacuum cleaner according to claim 1, which is provided. 3. The telescopic pipe for an electric vacuum cleaner according to claim 2, wherein a communication portion that communicates with the atmosphere is provided in the exhaust passage on the joint side of the fixed pipe and the sliding pipe. 4. A vacuum cleaner main body having an electric blower for emitting suction air for sucking dust and a suction tool for sucking dust, the suction passage having the electric blower and the suction tool. An electric vacuum cleaner, which is communicated with the expansion pipe for the electric vacuum cleaner according to any one of claims.