JP2001212037A - Electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner which solves a problem of that an engaging part is tightened to an extending pipe securely with a screw and an outer pipe dents to an inner pipe and it makes the pipes' extending and shortening motion harder. SOLUTION: An extending pipe unit consists of an outer pipe connecting to a handle part and an inner pipe which is flexible and connects to an inhalator, and an engaging part is fixed at the outer pipe and settled hooking on a hose near their connecting part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vacuum cleaner,
In particular, the present invention relates to a vacuum cleaner that can be stored vertically with a hose, an extension pipe, and the like attached.

[0002]

2. Description of the Related Art Conventionally, from the viewpoint of narrow house conditions or simplification of cleaning work itself, a configuration in which a vacuum cleaner main body can be stored vertically with a hose, an extension pipe and a suction port attached to the main body. Vacuum cleaners are widespread.

FIG. 8 is a view showing an example of a conventional vacuum cleaner which is stored vertically. In the figure, reference numeral 301 denotes a vacuum cleaner main body, 302 denotes a vacuum cleaner hose, 303 denotes a hose portion of the hose 302, 304 denotes a hose joint portion of the hose 302, 30
5 is a hose hand part of the hose 302, 306 is an extension pipe, 3
07 is a mouthpiece, 308 is a locking portion attached to the extension tube, 30
9 is a locked part provided on the front lower surface side of the cleaner body,
A locking portion 308 attached to the extension tube is engaged with the locking portion.

[0004] When storing the cleaner body 301 vertically,
The vacuum cleaner main body is arranged vertically with the rear surface portion facing the floor surface, and a locking portion 308 is attached to the extension tube 306. The locking portion 308 is locked to the locked portion 309. And store it.

[0005]

In the conventional vacuum cleaner, the ends of the fixing portion of the locking portion are fixed to the locking portion of the extension tube by tightening the ends of the fixing portion with screws. The locking portion prevents the backlash of the inner tube and the outer tube when the inner tube and the outer tube are expanded and contracted, and prevents the air flow from leaking from the gap between the inner tube and the outer tube. The gap had to be as small as possible. Therefore, when the fixing part of the locking part is strongly tightened with a screw in order to fix the locking part to the extension tube to coagulation,
When the outer tube of the portion covered by the fixing portion of the locking portion is deformed toward the inner tube side and the outer tube and the inner tube expand and contract, the inner tube is caught by the deformed portion of the outer tube, and There was a risk that the inner tube could not be expanded and contracted smoothly. Also, since the locking part is separate,
In some cases, the extension pipe was misaligned when stored in use or when the gap suction port was attached, and the extension tube could not be stored properly.

SUMMARY OF THE INVENTION The object of the present invention has been made in view of the above-mentioned various problems. It is possible to secure a degree of freedom in design, to stabilize the elasticity of the inner tube and the outer tube, and to provide a locking portion. The present invention provides a vacuum cleaner capable of reliably holding the extension pipe and the floor suction port, since the cost can be reduced as compared with the case where the suction pipe is formed separately, and the mounting height can be kept constant without any positional deviation.

[0007]

The present invention employs the following means in order to solve the above-mentioned problems.

A cleaner main body having a suction motor and a dust collecting part and having a hose connection part, a hose joint part fitted at one end to the hose connection part of the vacuum cleaner main body, and a hand part at the other end. It comprises a flexible hose having a hose proximal portion having an operating portion, an extension tube connected to the hose proximal portion, and a suction port connected to the extension tube, and the extension tube is connected to the hose proximal portion. An outer tube and an inner tube inserted into the outer tube and connected to the expandable and contractible suction port, and a locking portion integrally provided on the outer tube of the extension tube is provided near the vacuum cleaner main body or the hose joint portion. It is characterized by being locked to.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an external perspective view of a vacuum cleaner according to the present embodiment, and FIG. 2 is a sectional view thereof.

In these figures, 201 is a cleaner body, 202 is a suction motor, 203 is a control circuit for controlling the number of revolutions of the motor 202, 204 is a power cord, 20
Reference numeral 5 denotes a dust collecting portion for storing sucked dust, reference numeral 206 denotes a hose connection portion provided on the main body of the electric vacuum cleaner, and reference numeral 207 denotes a main body 201 of the vacuum cleaner.
209 is a flexible hose portion of the hose 208, 210 is a hose 208
A hose joint 211, a hose proximal portion connected to the hose 208; a hose proximal operating portion 212 for transmitting a control signal to the control circuit 203;
An extension pipe 214 connected to 11 is a suction port connected to the other end of the extension pipe. The extension tube 213 is the hose hand 21
1 and an inner tube 213b connected to the suction port 214. The inner tube 213b is slidably disposed in the outer tube 213a.
Are configured to be extendable. 215 is the hose joint 2
The locked portion 216 provided on the outer tube 2 of the extension tube 213
Locking portions 217 provided on the 13a side are fastening rings for fixing the inner tube 213b and the outer tube 213a of the extension tube 213 at arbitrary positions, and 218 is a gap suction port.

When the user carries the vacuum cleaner, the user can use the vacuum cleaner with the handle 207 standing upright as shown by the broken line. When not in use, the handle 207 falls down by its own weight in the horizontal direction and is housed in the main body 201.

FIG. 3 is a view showing a vertically stored state of the vacuum cleaner according to the present embodiment. In the drawings, the same portions as those shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted. When the vacuum cleaner is not used, the vacuum cleaner body is placed upright with the rear surface of the vacuum cleaner body facing the floor. Then, the protrusion 216 for locking the locking portion 216 provided integrally with the outer tube is provided on the extension tube.
a to the locked portion 21 formed on the hose joint portion 210.
5 is fitted and locked.

FIG. 4 is an enlarged perspective view showing the locked state of the locking portion of the vacuum cleaner according to the present embodiment. In the figure, 21
5a is a locked concave portion formed in the locked portion 215;
6a is a projection for locking the locking portion 216. In the drawings, the same portions as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the drawing, a locking projection 216a of a locking portion 216 provided on the extension tube 213 engages with a locked concave portion 215a of a locked portion attached to the joint portion, and 2
13 is held in engagement with the joint of the hose.

FIGS. 5A and 5B are side views of an external appearance of an extension pipe according to an embodiment of the present invention. (A) is a state where the inner tube 213b is stretched, and (b) is a state where the inner tube 213b is contracted. (C) is an exterior bottom view. 216a is the locking portion 21
Reference numeral 6 denotes a locking projection, and 216b is a protruding rib for attaching the gap suction port 218 to the locking portion 216. A plurality of protruding ribs 216b are formed in the same direction as the axial direction of the extension pipe 213, and are formed so as to easily insert the gap suction port 218 along the protruding rib 216b from the hose hand portion 211 side.

FIG. 6 shows a state in which the frames of the locking portion 216 are exchanged in one embodiment of the present invention. The locking portion 216 is separated by a frame dividing line 219 on the mold structure, and the position of the locking portion 216 can be freely changed by exchanging the frames.

FIG. 7 shows an embodiment of the present invention.
3 is a cross-sectional view of FIG. As can be seen from FIGS. 6 and 7, since a plurality of ribs 216 c of the locking portion 216 are provided along the radial direction of the outer tube 213 a of the extension tube 213,
The structure is strong against impact from the side. Locking part 216
Since the rib 216c is located outside the center line 230 of the outer tube 213a, the width of the locking portion 216 is smaller than the outer diameter of the outer tube 213a of the extension tube 213, and it looks slim in appearance.

FIG. 8 shows a conventional extension pipe 221,
FIG. 9 is a cross-sectional view of a state where a separate locking portion 220 is attached to one outer tube 221a. Locking part 22 by tightening screw 222
0 is fastened to the outer tube 221a.

As described above, in this embodiment, since the locking portion 216 is provided integrally with the outer tube 213a, the inner tube 21
3b and the outer tube 213a can be stabilized in elasticity,
In addition, since the mounting height can be kept constant without causing a positional shift of the locking portion 216, the extension pipe 213 and the floor suction port 218 can be reliably held. In addition, since the position of the locking portion 216 can be freely changed by exchanging the frames, the length of the cleaner main body and the suction joint 224 having different heights of the locked portion from the floor surface are reduced. Even with a combination of different suction ports, the tip of the suction port 214 can be stored in a stable state in contact with the floor surface. For this reason, it is possible to diversify the model configuration and share parts, thereby improving design flexibility.

[0020]

According to the present invention, since an integral locking portion is provided on the outer tube of the telescopic extension tube, the elasticity of the inner tube and the outer tube can be stabilized, and the positional deviation of the locking portion can be reduced. Since the mounting height can always be kept constant without causing the occurrence, the extension pipe and the floor suction opening can be reliably held. In addition, since the locking part can freely change the position of the locking part by replacing the frame,
Even in combination with a cleaner body having a different height of the locked portion from the floor surface and a suction opening having a different length of the suction joint, the tip of the suction opening can be stored in a stable state in contact with the floor surface. For this reason, it is possible to diversify the model configuration and share parts, thereby improving design flexibility.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the vacuum cleaner according to the first embodiment of the present invention.

FIG. 3 is a view showing a vertically stored state of the vacuum cleaner according to the first embodiment of the present invention.

FIG. 4 is an enlarged perspective view showing a locked state of a locking portion of the vacuum cleaner according to the first embodiment of the present invention.

FIG. 5 is an external side view and a bottom view of an extension tube according to an embodiment of the present invention.

FIG. 6 is a view showing frame division of a locking portion of an extension tube according to an embodiment of the present invention.

FIG. 7 is a sectional view of an extension tube according to the first embodiment of the present invention.

FIG. 8 is a sectional view of a conventional extension pipe.

FIG. 9 is a view showing an example of a conventional vacuum cleaner which is stored vertically.

[Description of References] 201: vacuum cleaner main body, 202: suction motor, 2
03: control circuit, 204: power cord, 205: dust collecting part,
206: Hose connection part, 207: Handle, 208: Hose, 209: Flexible hose part, 210: Hose joint part, 211: Hose hand part, 212: Hose hand control part, 213: Extension tube, 214: Suction, 215, 217: locked part, 216: locking part, 217: fastening ring, 21
8 ... Suction mouth, 219 ... Frame split line, 220 ... Conventional separate locking part.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigehiko Suzuki 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture Inside Hitachi Taga Electronics Co., Ltd. (72) Inventor Koichi Umezawa 1-1280 Higashi Koikebo, Kokubunji-shi, Tokyo F-term in Hitachi, Ltd. Design Laboratory (reference) 3B006 PA04

Claims (3)

[Claims] A vacuum cleaner body having a suction motor and a dust collecting part and having a hose connection part; a hose joint part fitted at one end to the hose connection part of the vacuum cleaner body; A flexible hose provided with a hose hand portion having a hand operating portion, an extension tube connected to the hose hand portion, and a suction port connected to the extension tube, wherein the extension tube is connected to the hose hand portion. The vacuum cleaner main body or the hose joint, comprising: an outer pipe to be inserted; and an inner pipe inserted into the outer pipe and connected to the expandable and contractible suction port, and provided integrally with the outer pipe of the extension pipe. An electric vacuum cleaner which is locked near a part. 2. The vacuum cleaner according to claim 1, wherein the locking portion integral with the outer tube is provided with a suction opening for a gap. 3. The vacuum cleaner according to claim 1, wherein the locking portion integral with the outer tube is set at an arbitrary position by exchanging pieces on a mold structure.