JPH0584198A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent short-circuit and breaking of conductor wire to improve operability by housing a slip ring, annular member, and conductor wire in a cover body of a grip pipe which connects a bellows hose and an extension pipe of a vacuum cleaner. CONSTITUTION:A bellows hose 3 and an extension pipe (not shown) are interconnected by a grip pipe 5. A cover body 38 molded integrally with the pipe 5 rotatably supports a fitting part 14 fixed to the hose 3 and an attachment part 15 fixed to the pipe 5 by means of a rotary pipe 13. The part 15 includes slip rings 30-33 and is connected to an operation part 9 through sliding contact points 43-46. A conductor wire passes from the hose 3 through a notch of an annular wall 16 of the part 14 and is connected to the slip rings 30-33, while being restrained from rising up by a protruding piece 39. During cleaning, by gripping a grip 10, start up and stoppage, and rotation control of a vacuum cleaner are controlled by means of the operation part 9. As a result, angles between the extension pipe and the bellows hose can be varied and hence operability is improved, thereby preventing short-circuit and breaking of conductor wire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an electric vacuum cleaner in which at least one of an insert pipe side and a handle pipe side of a bellows hose is rotatable.

[0002]

2. Description of the Related Art Conventionally, as an electric vacuum cleaner of this type, for example, Japanese Patent Application Laid-Open No. 2-182227 (A47L 9/28) is known.
In this electric vacuum cleaner, an insertion pipe that is detachably connected to the cleaner body is provided at one end of the bellows hose, and the other end of the bellows hose is connected to a floor suction tool having a rotating brush through an extension pipe. In addition, a handle pipe having an operation unit for controlling the rotation of the electric blower of the cleaner body and the rotating brush is provided. Then, the rotary pipe provided at the end of the bellows hose is rotatably fitted to the handle pipe, and the sliding ring provided on the handle pipe is brought into contact with the slip ring provided on the rotary pipe, and the vacuum cleaner is passed through the bellows hose. The main body and the handle pipe are electrically connected.

The rotary pipe is divided into a fitting portion fitted and fitted to the bellows hose, a fitting portion fitted with a slip ring and rotatably supported by the insertion pipe, and a fitting portion and the fitting portion. An annular wall is formed. Then, the conductive wire wound around the bellows hose is connected to the slip ring through a notch formed in the annular wall.

However, if the conductive wire comes into contact with the handle pipe and is used for a long period of time, there is a possibility that the conductive pipe may be stripped by the handle pipe to cause a short circuit or break.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide an electric vacuum cleaner which does not cause short-circuiting or disconnection of conductive wires.

[0006]

According to the present invention, there is provided a cleaner main body having an electric blower and a control circuit unit built therein, an insertion pipe detachably connected to the cleaner main body at one end, and a grip pipe at the other end. A bellows hose having, and an operation section formed on the handle pipe, for transmitting an electric blower control signal to the control circuit section through a conductive wire provided on the bellows hose,
One end is detachably connected to the handle pipe, and the other end is provided with an extension pipe to which a floor suction tool is detachably attached, and the end portion of the bellows hose has a bellows hose fitting portion at one end and the other end. A slip ring is attached to a rotary pipe having a mounting portion rotatably supported on at least one of an insertion pipe and a grip pipe, and a conductive wire provided on the bellows hose is formed on the rotary pipe. It is connected to the slip ring through a notch in an annular wall that divides the fitting portion and the mounting portion, and at least one of the insertion pipe and the handle pipe is provided with a sliding contact electrically connected to the slip ring. ,
The cover member that covers the connecting portion of the rotary pipe and the connecting portion of the bellows is formed with a protruding piece that is inserted into the notch to prevent the conductive wire from rising.

[0007]

According to the above construction, the twisting of the bellows hose due to the cleaning operation is prevented by the rotation of the handle pipe and the bellows hose or the rotation of the insertion pipe and the bellows hose.
The conductive wire is prevented from coming into contact with the handle pipe or the insertion pipe by the protrusion formed on the cover body.
Alternatively, even if the insertion pipe rotates with respect to the bellows hose, the clothing of the conductive wire is not peeled off by the handle pipe or the insertion pipe, and short circuit, disconnection, etc. are prevented.

[0008]

An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 5, reference numeral 1 is a cleaner body having an electric blower, a control circuit section, a dust collecting section (all not shown), and an intake port 2 is formed on the front upper surface thereof. The intake port 2 has a rotating member (not shown) for rotatably mounting an insertion pipe 4 of a bellows hose 3 described later. Three
Is a bellows hose, one end of which is connected to an insertion pipe 4 which is detachably connected to the intake port 2, and the other end of which is connected to a handle pipe 5.

The handle pipe 5 is, as shown in FIG.
Consists of a curved tube 6 curved in a substantially V shape, a lower case 7 having an upper surface opening integrally formed toward the upper surface of the curved tube 6, and an upper case 8 covering the upper surface opening of the lower case 7. Was
It has an operating portion 9 extending in the same direction as an extension pipe 11 to be described later, and a handle portion 10 curved at an obtuse angle with respect to the operating portion 9 from the operating portion 9 toward the bellows hose 3 side. The control circuit components are housed in the space surrounded by the upper case 8.

Reference numeral 11 denotes an extension pipe detachably connected to the handle pipe 5, which is a floor suction tool 12 having a rotating brush at its tip.
Is designed to be detachably connected. Then, the operating portion 9 of the handle pipe 5 is operated to control the electric blower of the cleaner body 1 and the rotating brush of the floor suction tool 12 to drive the electric blower to remove dust on the surface to be cleaned 12 from the floor. Is sucked into the dust collecting portion of the cleaner body 1 through the extension pipe 11 and the bellows hose 3.

Next, referring to FIGS. 1 to 4, the bellows hose 3 will be described.
The connection configuration between the handle pipe 5 and the handle pipe 5 will be described. Reference numeral 13 is a rotary pipe that is fitted and mounted on the bellows hose 3, and has a fitting portion 14 for fitting the bellows hose 3 on one end and a slip ring 30, 31, 32, 33 described later on the other end. Along with forming 15, a pair of annular walls 16 and 17 for partitioning the fitting portion 14 and the mounting portion 15 are formed, and conductive wires 34, 35, 36 and 37, which will be described later, are fitted to the annular walls 16 and 17, respectively. A pair of notches 18 and 19 to be inserted are formed. Reference numeral 20 denotes a locking projection formed on the fitting portion 14 so as to restrict rotation of the bellows hose 3 fitted and mounted on the fitting portion 14 with respect to the rotary pipe 13. The mounting portion 15 is provided with two annular recessed grooves 21 and 22 on the outer peripheral surface of the tip portion,
A plurality of ribs 23 are formed in the longitudinal direction between the annular wall 16 and the annular groove 22.

Numerals 24 and 25 are two annular members fitted to the outer periphery of the mounting portion 15 of the rotary pipe 13, and the groove portions 26 and 27 formed in the longitudinal direction of the inner peripheral surface are engaged with the ribs 23 of the mounting portion 15. It has been stopped. 28 is a concave groove formed in one annular member 25, 29 is a protrusion formed in the other annular member 24, which is a concave groove 28
The annular members 24 and 25 are positioned by the engagement of the protrusion 29 with the annular member 24. Also, two grooves are formed in the circumferential direction on the outer peripheral surfaces of the annular members 24 and 25, respectively.

Reference numerals 30, 31, 32 and 33 denote slip rings mounted in the grooves of the annular members 24 and 25, which are formed by bending a conductive material into a ring shape and bending both ends toward the center. The diameter of the ring member 24 is once expanded and fitted into the grooves of the annular members 24 and 25, and the bent portions are inserted into the notches of the annular members 24 and 25 and folded back to both sides so that they can be mounted on the annular members 24 and 25. It has become.

Reference numerals 34 and 35 denote conductive wires for remote control of the bellows hose 3, which are inserted into the notches 18 and 19 formed in the annular walls 16 and 17, respectively, and the slip rings 30, 31 and 32, respectively.
Of the 33, it is connected to the two inner slip rings 31, 32. 36 and 37 are conductive wires for feeding the bellows hose 3,
It is inserted into the notches 18 and 19 and is connected to the two outer slip rings 30 and 33.

Reference numeral 38 is a cover body for covering the fitting portion 14 of the rotary pipe 13 and the fitting portion of the bellows hose 3, and the annular wall 16,
Of the 17, a ring-shaped wall 17 on the fitting portion 14 side is locked and mounted. Reference numeral 39 denotes a protrusion integrally formed with the cover body 38, which is inserted into the notch 18 of the annular wall 16 to prevent the remote control conductive wires 34 and 35 and the power supply conductive wires 36 and 37 from being lifted up. When the rotary pipe 13 is rotated with respect to 5, the conductive wires 34, 35, 36, 37 are prevented from being scraped by the handle pipe 5 and broken.

Reference numeral 40 denotes a mounting portion formed on the lower surface side of the handle pipe 5, that is, on the side facing the operation portion 9 and the handle portion 10,
41 is a lid that covers the mounting portion 40, and is an integrally formed protrusion 42
Is fitted in an annular groove 22 formed in the rotary pipe 13 to prevent the rotary pipe 13 from coming off the handle pipe 5. Reference numerals 43, 44, 45 and 46 denote sliding contacts mounted on the lid 41 so as to make elastic contact with the slip rings 30, 31, 32 and 33 through the openings formed in the mounting portion 41 of the handle pipe 5. Of the sliding contacts 43, 44, 45, 46, the sliding contacts 44, 45 that are in sliding contact with the inner slip rings 31, 32 are connected to the control circuit components in the handle pipe 5, and the outer slip Sliding contacts 43, 46, which are in sliding contact with the rings 30, 33, are connected to a connection terminal (not shown), and power is supplied from this connection terminal to the rotary brush drive electric motor built in the floor suction device 12 via the extension pipe 11. It is supposed to do.

Reference numeral 47 denotes a packing which is fitted and mounted in the annular groove 21 formed in the rotary pipe 13, and which is in close contact with the inner circumference of the curved pipe 6 of the handle pipe 5 and is formed from the gap between the curved pipe 6 and the rotary pipe 13. It is designed to prevent a decrease in suction efficiency due to intake.

Thus, when cleaning, the handle pipe 5
The grip portion 10 is gripped, and the operation portion 9 located in front of the grip portion 10 is operated. The operation signal is the conductive wire of the bellows hose 3.
It is transmitted to the control circuit part built in the cleaner body 1 through 34, 35, the slip rings 31, 32, and the sliding contacts 44, 45, and the control circuit part is electrically driven in the cleaner body 1 according to the input signal. The blower and the suction tool 12 for the floor are controlled to stop and rotate the rotating brush driving electric motor. Further, power is supplied to the electric motor for driving the rotary brush of the floor suction tool 12 by using the conductive wires 36 and 37 of the bellows hose 3, the slip rings 30 and 33, and the sliding contacts.
43, 46, through extension tube 11.

For example, when cleaning a low place or the like, the handle pipe 5 is used in a state of being laid down by rotating it by about 90 degrees. At this time, since the rotating pipe 13 rotates with respect to the handle pipe 5, Since the rotation of the handle pipe 5 is not transmitted to the bellows hose 3 and the bellows hose 3 is not twisted, the usability can be improved. Further, since the handle pipe 5 held by the user rotates right behind, the movement of the handle pipe 5 during the cleaning operation is prevented from being transmitted to the bellows hose 3, and the twisting of the bellows hose 3 is surely prevented. be able to.

Further, the projecting piece 39 formed on the cover body 38 prevents the conductive wires 34, 35, 36, 37 from being lifted up, and the conductive wire 3
Since the wires 4, 35, 36, 37 are prevented from coming into contact with the handle pipe 5, even if the handle pipe 5 rotates, the conductive wires 34, 35, 3
6 and 37 will not be scraped by the handle pipe 5 and broken.

Further, since the lid 41 covering the sliding contacts 43, 44, 45, 46 is located at a position substantially facing the handle portion 10 of the handle pipe 5, that is, on the lower surface side, the lid 41 is provided. Is not conspicuous, the appearance is not deteriorated, and the lid 41 does not get in the way during use.

Although the bellows hose 3 is rotatable with respect to the handle pipe 5 in this embodiment, the bellows hose 3 may be rotatable with respect to the insertion pipe 4.

[0024]

As described above, according to the present invention, it is possible to reliably prevent a short circuit and a disconnection of a conductive wire with a simple structure.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts showing an embodiment of the present invention.

FIG. 2 is a partial sectional view of the same main part.

FIG. 3 is a top view of a main part with the handle pipe removed.

FIG. 4 is a perspective view of the cover body.

FIG. 5 is an external perspective view of the same electric vacuum cleaner.

[Explanation of symbols]

 1 Vacuum cleaner body 2 Air inlet 3 Bellows hose 4 Insert pipe 5 Handle pipe 9 Operating part 11 Extension pipe 12 Floor suction tool 13 Rotating pipe 14 Fitting part 15 Mounting part 16 Annular wall 18 Notch 31 Slip ring 32 Slip ring 35 Conductive wire 36 Conductive wire 38 Cover body 39 Projection piece

Claims (1)

[Claims] 1. A cleaner main body having an electric blower and a control circuit unit built-in, an insertion pipe detachably connected to the cleaner main body at one end, and a bellows hose having a handle pipe at the other end, and the handle. An operation part formed on a pipe and transmitting an electric blower control signal to the control circuit part through a conductive wire provided on the bellows hose, and one end detachably connected to the handle pipe and the other end for floor An extension pipe to which a suction tool is detachably attached is provided, and a bellows hose fitting portion is attached to one end of the bellows hose and a slip ring is attached to the other end of the bellows hose to rotate at least one of the insertion pipe and the handle pipe. A rotary pipe having a mounting portion that is freely supported is mounted, and a conductive wire provided on the bellows hose is inserted through a notch in an annular wall that divides the fitting portion and the mounting portion formed on the rotary pipe. Contact slip ring A slide contact electrically connected to the slip ring is provided on at least one of the insertion pipe and the grip pipe, and the cover member covers the connecting portion of the fitting portion of the rotary pipe and the bellows hose. An electric vacuum cleaner, characterized in that a protrusion is inserted into the notch to prevent the conductive wire from rising.