JPH0924002A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely keep the electric connection between both connecting terminals even if an inner tube is slid in an outer tube in an extension tube comprising an outer tube and an inner tube by disposing a conductor on each of the outer tube and the inner tube, and providing the end part of one of the conductors with a contact point brought into contact with the other conductor in such a manner as to freely slide. SOLUTION: An extension tube of a vacuum cleaner comprises an outer tube 108 provided with a connecting terminal 116 and an inner tube 109 provided with a connecting terminal 117, wherein the connecting terminals 116, 117 are respectively provided with conductors 118, 119, each one end of which is put in the electric connecting state. Further, the extension tube comprises an inner tube side storing part 120 for storing the conductor 119, and a regulating means 113 for regulating the position of the inner tube 109 in the outer tube 108, wherein the regulating means 113 is formed by a locked part 125 provided on the outer peripheral surface of the inner tube 109 and a locking part 128 provided on the outer tube 108 side. An inner tube side storing part 120 is extended integrally with one side surface of the inner tube 109 in the axial direction thereof, and the end part of one of the conductors 118, 119 is provided with a contact point 122 brought into contact with the other conductor in such a manner as to freely slide.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner provided with an extension tube which is composed of an outer tube and an inner tube which slides inside the outer tube and which can be expanded and contracted to a desired length and can be locked at an arbitrary position. It is a thing.

[0002]

2. Description of the Related Art A conventional extension tube for an electric vacuum cleaner is a shokai sho6.
There was a structure shown in Japanese Patent No. 1-164649. The structure of this extension pipe will be described with reference to FIGS. In FIG. 9, 3 is an extendable extension tube composed of an inner tube 4 and an outer tube 5. Reference numeral 9 is an extension cord having plugs 10 and 11 at both ends. By connecting one plug 10 to a connecting part of a suction tool (not shown) and the other plug 11 to a connecting part of a hand switch part, respectively. , The suction tool side and the cleaner body side are electrically connected via the hand switch section. The extension cord 9 is formed by curling the coil portion 9
a is provided, and the coil portion 9a is always stored and is extended by an external force.

12 is a code clip attached to the inner pipe 4,
Numeral 13 is a code clip which is integral with or separate from the outer tube 5, and the extension code 9 is retained by the code clips 12 and 13 at both ends thereof with the coil portion 9a as a boundary. Are supported by the inner and outer tubes 4 and 5, respectively. In the above structure, the extension pipe 3 is normally stored and stored with the inner and outer pipes 4 and 5 contracted as shown in FIG. 9, and at this time, the coil portion 9a of the extension cord 9 is contracted. Located along the extension pipe at. Next, when using the extension pipe 3, the lock button 14 is operated to extend the inner and outer pipes 4 and 5 as shown in FIG. 10. At this time, the extension cord 9 is used.
The coil portion 9a of is also expanded. Thus, the extension cord 9 is configured to expand and contract according to the extension and contraction state of the extension tube 3.

[0004]

However, in the conventional construction, the extension cord 9 is attached to the outer peripheral side of the extension pipe 3 in an exposed state, so that the extension cord 9 is caught on an object during the cleaning work. In addition, the workability of cleaning is poor and the extension cord 9 is easily damaged, and there is a problem in durability and safety. Also, when storing, etc., the inner and outer pipes 4 of the extension pipe 3,
Even when 5 was contracted, the extension cord 9 was exposed, and the appearance was not good, and it was easily caught or damaged by an object, and the storability was poor.

The present invention solves the above problems, and an object of the present invention is to provide an extension tube for an electric vacuum cleaner which does not impair cleaning workability and is excellent in durability, safety and storability. .

[0006]

An extension pipe is an inner pipe having a connecting terminal A at an end on the hose side, and an inner pipe sliding in the outer pipe and having a connecting terminal B at an end on the floor nozzle side. A conductor A having one end electrically connected to the connection terminal A and attached to an outer tube; a conductor B having one end electrically connected to the connection terminal B; and a conductor B housed therein. The inner tube side storage section,
An adjusting means for restricting the position of the inner pipe in the outer pipe is provided, and the adjusting means is provided on a locked portion provided on the outer peripheral surface of the inner pipe in the axial direction and on the locked portion provided on the outer pipe side. It is formed of a locking portion for locking and an operating body for operating the locking portion, and further, the inner pipe side storage portion is integrally extended in the axial direction of the inner pipe and on one side surface, and the conductor A or An electrical connection between the connection terminal A and the connection terminal B is provided by providing a contact that slidably contacts the other conductor on one end of the conductor B, even if the inner pipe is slid inside the outer pipe. Is reliably maintained, and the position of the inner pipe in the outer pipe can be fixed at a desired position by the adjusting means.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is
A hose connected to the cleaner body, a floor nozzle having an electric brush, and an extension pipe connecting one end of the hose to the floor nozzle, and the extension pipe is provided with a connection terminal A at an end on the hose side. An outer tube, an inner tube that slides in the outer tube and has a connection terminal B at the end portion on the floor nozzle side, and a conductor A that is electrically connected at one end to the connection terminal A and attached to the outer tube. And a conductor B whose one end is electrically connected to the connection terminal B,
An inner tube side housing portion for housing the conductor B and an adjusting means for restricting the position of the inner tube in the outer tube are provided, and a plurality of the adjusting means are provided on the outer peripheral surface of the inner tube in the axial direction. A locking portion provided on the outer pipe side for locking the locked portion, and an operating body for operating the locking portion, and further, the inner pipe side storage portion is formed in the axial direction of the inner pipe. Conductor A integrally extended to one side
Alternatively, by providing a contact at one end of the conductor B with which the other conductor slidably abuts, even if the inner pipe freely slides inside the outer pipe, the conductor A and the conductor B can be slid. By maintaining the electrical connection between them and extending the inner tube side storage part integrally in the axial direction of the inner tube and on one side surface, the rigidity of the inner tube is increased and it is easily deformed even when external force is applied. Furthermore, the outer tube and the inner tube can be freely expanded and contracted by the adjusting means, and the inner tube can be fixed in the outer tube with a required length.

According to a second aspect of the present invention, the conductor A
By providing a contact that slidably abuts on the outer tube side end of the conductor B, even if the inner tube slides in the outer tube, the contact connected to the conductor B will follow the movement according to the movement. It moves while contacting A, and the electrical connection between the connection terminals A and B is always maintained. The invention according to claim 3 of the present invention provides an outer tube side storage portion for accommodating the conductor A in the outer tube,
Since the outer pipe side storage part is slidable inside the inner pipe side storage part,
The conductor on the inner pipe side is protected by the inner pipe side storage part integrally provided in the inner pipe, and the conductor on the outer pipe side is double protected by the outer wall of the outer pipe and the outer pipe side storage part. Not affected by external force.

According to a fourth aspect of the present invention, the conductor B is
Is provided on the inner wall of the inner tube side storage portion, and the contact that slidably contacts the conductor B is provided at the inner tube side end of the conductor A.
When the inner pipe is slid in the outer pipe, the contact slides in contact with the conductor along with the movement, so that the electrical connection between the connection terminals A and B is always ensured. According to a fifth aspect of the present invention, the locked portion provided on the inner pipe is formed by a plurality of recesses provided at intervals along the axial direction, and the locking portion provided on the outer pipe side is provided. Since the recesses and the locking members are formed on the opposite sides of the conductors A and B, the recesses and the locking members are formed on the opposite sides of the conductors A and B, so that the formation of the locked portion affects the conductor containing portion. The extension tube can be assembled easily because it can be done without giving any influence and it does not affect the storage space of the conductor in the conductor storage portion.

[0010]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
This will be described below. First, the overall configuration of the vacuum cleaner will be described with reference to FIG. As shown in the figure, the hose 10 is attached to the suction port 102 of the cleaner main body 101 having a built-in electric blower (not shown).
3, one end of which is connected to the other end of the hose 103, and an operating portion 105 provided at a hand portion 104 provided at the other end of the hose 103.
The operation of the electric blower (not shown) built into the No. 1 is operated. A conductive wire (not shown) is built in the hose 103, and the hand portion 104 and the cleaner body 10 are connected through the conductive wire.
1 is electrically connected.

An extension tube 107 that is extendable and retractable is provided at the hand portion 104.
Is connected, and the extension tube 107 is
The outer pipe 108 is connected to the proximal portion 104 side and is made of an insulating material such as resin, and the inner pipe 109 is made of metal or the like and is inserted axially movably in the outer pipe 108. A connection pipe 106 for connecting a floor nozzle 111 having a built-in electric brush 110 is fixed to an end portion of the inner pipe 109. A conductor, which will be described later, is arranged in the axial direction of the extension pipe 107, and electric power is provided from the hand portion 104 to the electric brush 110 of the floor nozzle 111.

Reference numeral 113 is an adjusting means for adjusting the position of the inner tube 109 which is axially movable within the outer tube 108.
Reference numeral 4 denotes an operating body that is operated when making the adjustment. Details of the adjusting means 113 and the operating body 114 will be described later. 1
Reference numeral 15 denotes a hook portion fitted into a hook hole (not shown) provided in the cleaner body 101, which is wound around the connection pipe 106 and attached, and after the cleaning is completed, the extension pipe 107 is attached to the cleaner body 101. It is intended to be hooked in the hook hole to reduce the storage space of the entire vacuum cleaner.

Next, the structure of the extension pipe 107 will be described in detail with reference to FIGS. A hand portion 1 is provided on the hand portion 104 side of the outer tube 108.
04 is provided with a connection terminal A116 electrically connected to
On the other hand, a connection terminal B 117 for electrically connecting to the electric brush 110 built in the floor nozzle 111 is provided at the end of the connection pipe 106 fixed to the inner pipe 109.

Reference numeral 118 denotes a pair of conductors A made of metal pieces.
The hand 104 side is connected to the connection terminal A116 and the outer tube 1
The inner wall of 08 extends in the axial direction on one side surface. 119
Is a conductor B composed of a pair of general-purpose electric wires, and is a floor nozzle 111.
The side end portion is connected to the connection terminal B 117, and the outer pipe 108 side end portion is connected to the contact point 122 made of an elastic metal that slidably abuts on the conductor A 118. It is stored in the inner pipe side storage portion 120 provided on the side surface.

Reference numeral 123 designates the outer tube 10 of the inner tube side housing portion 120.
It is an opening provided at the end on the 8th side and through which the contact point 122 is led out. Reference numeral 124 denotes a gasket provided at an end portion of the inner pipe 109 on the outer pipe 108 side for maintaining airtightness between the inner pipe 109 and the outer pipe 108. In the above embodiment, the conductor A118 and the conductor B119 are connected to the floor nozzle 1
Although it is provided to supply electric power to the electric brush 110 built in 11, it can be used as a signal line between the hand portion 104 and the floor nozzle 111 in addition to the electric power supply.

Next, details of the adjusting means 113 and the operating body 114 will be described. 125 is a conductor A118 and a conductor B1
A plurality of locked portions are provided on the opposite side of 19 in the axial direction of the inner pipe 109 at regular intervals, and have a groove shape in a direction orthogonal to the axial direction of the inner pipe 109. On the other hand, the inner tube 1 of the outer tube 109
A guide body 126 is fixed to the end portion on the 09 side, and the guide body 126 has a locking member 128 that is vertically movable within an opening 127 provided in the outer pipe 108 and slides in the axial direction of the outer pipe 108. A part of the flexible operating body 114, a pressing plate 129 fixed to one side of the operating body 114, and an elastic body 13 formed with a spring or the like for constantly biasing the operating body 114 toward the inner tube 109.
0 is built in.

The locking member 128 is a grooved locked portion 12
It is formed in a round bar shape so as to engage with 5. The material of the locking member 128 is preferably metal, but may be hard resin. Next, the operation of the above configuration will be described. FIG.
The state where the inner pipe 109 of the extension pipe 107 is most pulled out from the outer pipe 108 is shown, and the locking member 128 shows the pressing plate 12.
The inner pipe 109 is pressed inward by 9 and engages with the locked portion 125 provided on the inner pipe 109 to prevent movement of the inner pipe 109 inside the outer pipe 108.

Next, as shown in FIG. 4, when the operating body 114 is slid rightward against the biasing force of the elastic body 130, the pressing plate 129 is integrated with the operating body 114 and moves rightward. When the inner tube 109 is moved into the outer tube 108 at this time, the locking member 128 becomes free.
Is retracted from the locked portion 125, and the inner tube 109 can be housed in the outer tube 108 by an arbitrary length.

Needless to say, the inner tube 109 once stored can be pulled out from the outer tube 108 while the operating body 114 is being slid to the right. Then, when the inner tube 109 is pushed into the outer tube 108 by a desired length and then the hand is released from the operating body 114, the pressing plate 129 is moved leftward by the urging force of the elastic body 130.

Therefore, when the locking member 128 is located between the two adjacent locked portions 125, the locking member 128 is only in contact with the outer wall of the inner pipe 109 when the hand is released from the operating body 114. , The inner tube 109 is slightly movable within the outer tube 108, but the locking member 128 is the closest locked portion 125.
At this point, the locking member 128 is fitted into the locked portion 125 by the pressing plate 129, and further movement of the inner pipe 109 is prevented.

When the inner tube 109 is moved within the outer tube 108, the contact 122 connected to the conductor B119 moves in contact with the conductor A118 according to the movement, and the contact between the connection terminal A116 and the connection terminal B117 is moved. The electrical connection is reliably maintained. Further, the locked portion 12 provided on the inner pipe 109
5 and the locking member 128 provided on the outer pipe 108 side are arranged on the opposite side of the conductor A118 and the conductor B119, so that the locked portion 125 is formed by the inner pipe side storage portion 120 and the conductor A11.
8 can be done without affecting the formation and arrangement of 8
The processing and assembly of 07 are easy. In the above embodiment, the locked portion 125 is formed in the groove shape and the locking member 128 is formed in the round bar shape. However, the locked portion 125 is formed in the concave shape, and the locking member 128 may be a sphere. The point is to set the shapes so that they engage with each other.

The outer tube 108 is made of a material such as resin in the above embodiment, and the conductor A118 is provided directly on the inner wall of the outer tube 108. However, a light metal such as aluminum is used. Is also good. In that case, the outer tube 108 is lightweight,
It can be thin and solid. However, in this case, it goes without saying that it is necessary to interpose an electrical insulator between the conductor A 118 and the inner wall of the outer tube 108.

On the other hand, if a light metal such as aluminum is used as the material of the inner tube 109, it can be made light-weight, thin-walled and solid like the above. Further, if the inner tube 109 is molded of resin or the like, there is an advantage that a rib for guide when the parts such as the conductor B119 and the connection terminal B117 are assembled can be easily formed. It is good to select.

Furthermore, since the inner pipe side housing portion 120 is integrally extended in the axial direction of the inner pipe 109 and on one side surface, the rigidity of the inner pipe 109 having an inner diameter smaller than that of the outer pipe 108 is increased,
It does not easily deform even when an external force is applied. (Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS.

The inner tube 109 is formed of an insulating material such as resin, and a pair of rail-shaped conductors B119, one end of which is connected to the connection terminal B117, are provided on the ceiling of the inner tube-side storage section 120. On the other hand, on the outer pipe 108 side, the end portion is the outer pipe 10.
8, a cylindrical outer tube side storage portion 133 integrally fixed to 8 and containing a conductor A118, a connection terminal A116 connected to one end of the conductor A118 and covered with a cover body 134,
The elastic contact 122 is connected to the other end of the conductor A118, and the outer tube side storage part 133 is slidable in the inner tube side storage part 120, and the contact 122 is held on the outer tube side storage part. It is provided at the outlet of 133 and brought into contact with the conductor B119.

Reference numeral 113 is an adjusting means for adjusting the position of the inner tube 109 in the outer tube 108. Since its structure and operation are the same as those of the first embodiment, the description thereof will be omitted. With the above configuration, when the inner tube 109 is slid in the outer tube 108, the contact 122 slides while contacting the conductor B119 along with the movement, so that the electrical connection between the connection terminal A116 and the connection terminal B117 is always maintained. Reserved.

Further, the rail-shaped conductor B is integrally extended in the axial direction of the inner pipe 109 and on one side surface thereof, and is accommodated in the inner pipe-side housing portion 120.
Since the housing 119 is housed, the housing 120 on the inner tube side can be made thin, the space for housing the entire conductor becomes small, the extension tube 107 can be made compact and lightweight, and the usability is good. It will be. Further, since the conductor A118 is built in the outer tube side storage section 133, the conductor A118 is not exposed to the dust that is sucked in, and is always stored in the outer wall of the outer tube 108 and the outer tube side storage section 133. It is heavily protected and is not affected by external forces, ensuring electrical connection for a long period of time.

Further, as shown in FIG.
The outer wall of the inner tube side storage section 120 of 9 is projected outward, and the guide section 108b fitted to the projecting section 136 is attached to the outer tube 108.
By providing it on the inner wall of the inner tube 109, a detent for the inner tube 109 and the outer tube 108 is formed. Further, in this embodiment, the inner pipe side storage portion 12
Since the rotation stopping portion is formed in the same portion as 0, the inner pipe 109,
It is not necessary to separately provide a rotation stopping mechanism at each different place of the outer tube 108.

Further, in the above embodiment, the inner tube 109 is made of resin, but it is of course possible to form it by a light metal such as aluminum. In that case, the rigidity of the inner tube 109 is remarkably improved, and the inner tube 109 is resistant to external impact. It becomes stronger against. The inner pipe 109
It is needless to say that when the above is formed of metal as described above, an appropriate insulator needs to be interposed between the conductor B119 and the inner wall of the inner tube 109.

[0030]

According to the first aspect of the present invention,
A hose connected to the cleaner body, a floor nozzle having an electric brush, and an extension pipe connecting one end of the hose to the floor nozzle, and the extension pipe is provided with a connection terminal A at an end on the hose side. An outer tube, an inner tube that slides in the outer tube and has a connection terminal B at the end portion on the floor nozzle side, and a conductor A that is electrically connected at one end to the connection terminal A and attached to the outer tube. And a conductor B whose one end is electrically connected to the connection terminal B,
An inner tube side housing portion for housing the conductor B and an adjusting means for restricting the position of the inner tube in the outer tube are provided, and a plurality of the adjusting means are provided on the outer peripheral surface of the inner tube in the axial direction. A locking portion provided on the outer pipe side for locking the locked portion, and an operating body for operating the locking portion, and further, the inner pipe side storage portion is formed in the axial direction of the inner pipe. Conductor A integrally extended to one side
Alternatively, since a contact that slidably abuts on the other conductor is provided at either end of the conductor B, even if the inner pipe is moved inside the outer pipe, the electric power between the conductor A and the conductor B is always maintained. Connection is secured. Further, since the inner tube side storage portion is integrally extended in the axial direction of the inner tube and on one side surface, the rigidity of the inner tube having the inner diameter smaller than that of the outer tube is increased, and the inner tube is not easily deformed even when an external force is applied. is there. Further, by operating the operating body provided on the outer pipe, the engagement part on the outer pipe side and the plurality of engaged parts on the inner pipe side can be freely engaged and disengaged, and the expansion and contraction of the outer and inner pipes can be performed. And the inner tube can be fixed in the outer tube with the required length.

According to the second aspect of the present invention, since the contact which slidably contacts the conductor A is provided at the end of the conductor B on the outer pipe side, the inner pipe slides in the outer pipe. Then, according to the movement, the contact point connected to the conductor B moves while contacting the conductor A, and the electrical connection between the connection terminal A and the connection terminal B is maintained. According to the third aspect of the present invention, the outer pipe side storage portion is slidable within the inner pipe side storage portion, so that the inner pipe side conductor is integrally provided in the inner pipe. The conductor on the inner tube side and the conductor on the outer tube side are doubly protected by the outer wall of the outer tube and the outer tube side housing, respectively, and are not affected by external force, so that electrical connection can be made for a long time. Reserved.

According to the fourth aspect of the present invention, the conductor B is provided on the inner wall of the inner pipe side accommodating portion, and the contact slidably contacting the conductor B is provided on the inner pipe side of the conductor A. Since it is provided at the end, when the inner pipe is slid in the outer pipe, the contact slides while contacting the conductor with the movement, and the electrical connection between the connection terminal A and the connection terminal B is always ensured. It Further, since the rail-shaped conductor B is housed in the inner pipe side accommodating portion, which is integrally extended in the axial direction of the inner pipe and on one side surface, the inner pipe side accommodating portion can be made thin, and the overall conductivity can be reduced. The space for accommodating the body is reduced, the extension tube can be made smaller and lighter, and the usability is improved.

According to the fifth aspect of the present invention, the locked portion provided on the inner pipe and the locking portion provided on the outer pipe side are arranged on the opposite side of the conductor A and the conductor B. Therefore, the formation of the locked portion does not affect the conductor accommodating portion, and also does not affect the conductor accommodating space in the conductor accommodating portion.
Assembling the extension tube becomes easy.

[Brief description of drawings]

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

FIG. 2 is a side view of an extension tube of the vacuum cleaner.

FIG. 3 is a side sectional view of the extension pipe.

FIG. 4 is a view showing an operation of an adjusting means provided in the extension pipe.

FIG. 5 is a sectional view taken along line AA of FIG. 3;

FIG. 6 is a sectional view taken along line BB of FIG. 3;

FIG. 7 is a side sectional view of an extension tube of an electric vacuum cleaner showing a second embodiment of the present invention.

8 is a sectional view taken along the line CC of FIG. 7;

FIG. 9 is a side view of an extension tube of an electric vacuum cleaner showing a conventional example.

FIG. 10 is a view showing a state in which the extension tube is extended.

[Explanation of symbols]

 101 Vacuum Cleaner Main Body 102 Suction Port 103 Hose 104 Hand Section 105 Operating Section 107 Extension Tube 108 Outer Tube 109 Inner Tube 110 Electric Brush 111 Floor Nozzle 114 Operating Body 116 Connection Terminal A 117 Connection Terminal B 118 Conductor A 119 Conductor B 121 Inner pipe side storage part 122 Contact point 125 Locked part 128 Locking part

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hidenori Kitamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Kazuma Suo, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Masakazu Onda 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A hose connected to the cleaner body, a floor nozzle having an electric brush, and an extension pipe connecting one end of the hose to the floor nozzle, the extension pipe being provided at an end on the hose side. An outer pipe provided with a connection terminal A, an inner pipe which slides in the outer pipe and has a connection terminal B at an end portion on the floor nozzle side, and one end of which is electrically connected to the connection terminal A and attached to the outer pipe. Conductor A, the conductor B whose one end is electrically connected to the connection terminal B, the inner pipe side housing portion for housing the conductor B, and the adjustment for regulating the position of the inner pipe in the outer pipe. A plurality of locking means provided in the outer peripheral surface of the inner pipe in the axial direction, a locking portion provided on the outer pipe side for locking the locking means, and the locking means. Formed of an operating body for operating the portion, and further, the inner pipe side accommodating portion is integrally extended in the axial direction of the inner pipe and on one side surface of the inner pipe. An electric vacuum cleaner in which one end of the conductor B is provided with a contact that slidably contacts the other conductor. 2. The electric vacuum cleaner according to claim 1, wherein a contact that slidably contacts the conductor A is provided at an end of the conductor B on the outer tube side. 3. The electric vacuum cleaner according to claim 1, wherein an outer tube-side housing portion containing the conductor A is provided in the outer tube, and the outer tube-side housing portion is slidable within the inner tube-side housing portion. 4. The conductor B is provided on the inner wall of the inner tube side storage portion,
The vacuum cleaner according to claim 1 or 3, wherein a contact that slidably contacts the conductor B is provided at an end portion of the conductor A on the inner pipe side. 5. The locked portion provided on the inner pipe is formed by a plurality of recesses provided at intervals along the axial direction, and the locking portion provided on the outer pipe side is engaged with the plurality of recesses. The vacuum cleaner according to any one of claims 1 to 4, wherein the vacuum cleaner is formed of a mating locking member, and the recess and the locking member are arranged on opposite sides of the conductor A and the conductor B.