JP2648035B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner,
In particular, the present invention relates to a vacuum cleaner capable of preventing a flexible hose from being twisted.

2. Description of the Related Art As disclosed in Japanese Utility Model Laid-Open Nos. 49-32459 and 56-91558, a vacuum cleaner having a handle attached to a bent pipe has been proposed. The one using this bent pipe with a handle can move the floor suction tool with one hand more easily than the one without a handle, and when cleaning a place above a certain height such as furniture or ceiling, extra There is an advantage that the suction tool can be moved without imposing a heavy load, and cleaning is easy.

However, a hose is fixed to the bent pipe with a handle of the conventional vacuum cleaner, and the extension pipe is fitted to the tip of the bent pipe with the handle to assemble the vacuum cleaner. When the hose is twisted during cleaning or during cleaning, or due to aging, the spring of the hose rewinds from its original position, causing a springback, and the handle is inclined in the unwinding direction of the hose, and the handle is positioned upward. Without this, there was a problem that the usability was poor. Japanese Patent Publication No. 46-17346 discloses a suction pipe integrated with a hose that is rotatably connected to a suction port on the cleaner side. The aim of this is to make it easy to clean around the rotating hose that rotates around the center, and it is still insufficient to eliminate the twist of the hose itself.

SUMMARY OF THE INVENTION The present invention provides a flexible hose having one end connected to a cleaner body, a connection pipe connected to the other end of the hose, and a rotatable connection to the connection pipe. A handle pipe, an extension pipe connected to the handle pipe, and a floor suction tool connected to the extension pipe, and a handle portion is formed integrally with the handle pipe at a distance from the handle pipe. A remote control switch is provided on the extension pipe side of the handle, and a conductive sliding contact body connected to the remote control switch is provided on the handle pipe,
The connection pipe is electrically connected to a conductive sliding contact body,
A conductive sliding contact piece connected to the cleaner body via a conductive wire attached to the flexible hose is provided.

As a result, even if the hose is twisted, the hose can be automatically rotated with respect to the bent pipe with the handle in hand to eliminate the twist, and cleaning can be further facilitated.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an overall view of a vacuum cleaner according to one embodiment of the present invention. As shown in the drawing, an extension pipe 3 to a floor suction device 2 is connected to the suction side of the bent pipe 1 with a handle of the vacuum cleaner, and a hose 5 connected to the main body 4 is connected to the opposite discharge side. Is connected. As shown in the side view of FIG. 2 (a), the bent pipe 1 with a handle has a suction side, that is, a front part of the bent pipe 1 with a handle, and a discharge side, that is, a rear part of the bent pipe 1 with a handle. The handle 1A has a handle 1A whose middle portion is separated from the bent pipe 1 with a handle, and a remote control switch 6 is attached to the extension 1 side of the handle 1A. Also,
The suction side is a suction portion 1B connected to the extension pipe 3,
The discharge side is a suction hose cover 1C that covers the connection with the hose 5. In addition, as shown in the plan view of FIG.
Near C, a fastening portion 1D to which the screw 7 is fastened is formed at an end of the handle cover 1E. This bent pipe 1 with a handle has a handle pipe 8 as shown in the plan view of FIG.
Is provided. Three grooves 8A, 8B and 8C are formed on the outer periphery of the handle pipe 8 at the right end in the drawing. Two of the grooves 8A and 8B are filled with a ring-shaped conductive sliding contact body 9. One conductive wire 10 is connected to each of the conductive sliding members 9, and the two conductive wires 10 are connected to the remote control switch 6. The handle pipe 8 is formed with a fastening portion 8D for fixing with a screw to the fastening portion 1D of the handle cover 1E. On the other hand, a connecting pipe 11 is attached to the hose 5 as shown in the plan view of FIG. Three grooves 11A, 11B, and 11C are also formed on the outer periphery of the connection pipe 11, and a ring-shaped conductive sliding contact piece 12 is inserted into 11A and 11B. Each of the conductive sliding contact pieces 12 is also connected to a conductive wire 13 one by one. The conductive wire 13 is further connected to a hose steel wire 14 that passes through the inside of the hose 5 toward the main body 4. The groove 11C has a through hole 11D. FIG. 4 shows a connection state between the handle pipe 8 and the connection pipe 11. As shown in the figure, the handle pipe 8 is connected to the inside of the connection pipe 11, and the through-hole 11E is provided in a part of the two grooves 11A and 11B in which the conductive sliding contact pieces 12 are inserted. The conductive sliding contact piece 12 having a hemispherical shape only at this portion is pressed against the conductive sliding contact body 9 inserted in the grooves 8A and 8B of the inner handle pipe 8. Also, connection pipe 11
A part of the resin ring 15 for retaining which is inserted into the groove 11C is a convex portion 15A, and the convex portion 15A is engaged with the groove 8C of the handle pipe 8 through the through hole 11D in the groove 11C. You. As described above, according to the present embodiment, the connection pipe 11 having the hose 5 attached thereto is fitted around the outer periphery of the handle pipe 8, and the resin ring for retaining is inserted into the groove 11C from the outside of the connection pipe 11. The protrusion 15A of the retaining ring 15 is configured to engage with the groove 8C of the inner handle pipe 8 through the through hole 11D of the groove 11C.
Slides in the groove 8C, and the connecting pipe is
11 becomes rotatable. Therefore, when the bent pipe 1 with a handle is gripped by gripping the handle portion 1A, the hose 5 rotates with respect to the bent pipe 1 with the handle even if the hose 5 is twisted. it can. In addition, the conductive sliding contact pieces 12 in the grooves 11A and 11B of the connection pipe 11
The hose 5 rotates because the hemispherical portion of the hose 5 is in contact with the conductive sliding contact bodies 9 of the grooves 8A and 8B of the handle pipe 8 through the through holes 11E provided in a part of the grooves 11A and 11B. Even
The bent pipe with handle 1 and the main body 4 can be electrically connected. In addition, although the conductive sliding contact body 9 used the ring-shaped thing, it may be simply a contact-shaped thing, and what is necessary is just the electric contact piece connected to the conductive wire 13 and facing through the through hole 11E.
Further, the conductive wire 10 of the handle pipe 8 does not extend over the conductive sliding contact 9 or pass through the groove, but as shown in FIG. , 8C is embedded in a narrow groove 8E carved for the treatment of the conductive wire 10 at the bottom. Therefore, when the connection pipe 11 is inserted or when the through hole 8 is inserted.
When the wires 11 and 11 rotate relative to each other, the conductive wire 10 and the connecting portion between the conductive wire 10 and the conductive sliding contact body 9 do not hit the convex portion 15A of the pipe retaining resin ring 15 and can be inserted smoothly. , You can also rotate. The process of burying the conductive wire is the same for the connection pipe 11. As described above, according to the present embodiment,
The position of the extension pipe 3 and the hose 5 when the extension pipe 3 to which the floor suction tool 2 is attached can be connected to the extension pipe 3 with the handle 1 by a suction part 1B so that the bending pipe 1 with handle and the hose 5 can be rotatably connected. Hose 5 due to slippage or aging
Even if the hose is twisted due to a springback in which it is rewound, or even if the hose is cleaned at a high place, the hose 5 automatically rotates, so that cleaning becomes easier.

According to the present invention, since the hose and the handle pipe are rotatably connected via the connection pipe, even if the hose is twisted during the cleaning work by the user, the handle pipe is connected to the handle pipe. The hose and the gripping pipe rotate relative to each other simply by pulling while holding the formed gripping part, and the twist is eliminated. Since the remote control switch is provided on the handle, the direction of the handle and the direction of the remote control switch match, so the remote control switch always faces the user, so operability is good,
Easy to use. Since the handle is formed independently of the handle pipe, dust-containing air does not flow through the handle and the diameter of the handle does not affect the characteristics of the vacuum cleaner. Can be set.

[Brief description of the drawings]

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

FIG. 2 is a side view of the bent pipe with handle of FIG. 1 and a plan view of a state in which the bent pipe with handle and a hose are connected.

3 is a plan view of a handle pipe provided in the bent pipe with handle of FIG. 1 and a plan view of a connection pipe connected to the hose of FIG. 1;

FIG. 4 is a cross-sectional view of a connection portion when the handle pipe and the connection pipe of FIG. 3 are connected.

FIG. 5 is an explanatory view of a lead wire burying process of the handle pipe of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bent pipe with handle 1A Handle 5 Hose 6 Remote control switch 8 Handle pipe 9 Conductive sliding contact body 10 Conductive wire 11 Connection pipe 12 Conductive sliding contact piece 13 Conductive wire

Claims (1)

(57) [Claims] 1. A flexible hose having one end connected to the cleaner body, a connection pipe connected to the other end of the hose, a handle pipe rotatably connected to the connection pipe, and the handle. An extension pipe connected to the pipe, and a floor suction tool connected to the extension pipe, a handle portion is formed integrally with the handle pipe at a distance from the handle pipe, and And a conductive sliding contact body connected to the remote control switch is provided on the handle pipe, and the connection pipe is electrically connected to the conductive sliding contact body, and a flexible hose is provided. An electric vacuum cleaner comprising a conductive sliding contact piece connected to a cleaner main body through a conductive wire attached to the vacuum cleaner.