JP2002095617A - Central cleaning equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide central cleaning equipment in which a vacuum cleaner with a built-in motor fan is connected to an insertion opening provided on a floor, a wall or others, via a pipe, which can be more widely used due to the nozzle made compatible with general cleaners for home use, and improves safety in arc-resistant tracking performance and others. SOLUTION: In this equipment, a vacuum cleaner body 23 with a built-in motor fan 2 is connected to one of the insertion openings 24 provided on floors, walls, and so on, via a pipe, and a hose 6 has, on one end, a pipe connecting section 27 to connect the hose to the insertion opening 24 and, on the other end, a hand controller 28, with which an extension pipe 9 and a nozzle 10 is connected furthermore. Thus, the connecting section 27, the hose 6, the hand controller 28, the extension pipe 9, and the nozzle, etc., comprise a hose unit 29. To this hose unit 29, electric power is supplied from a commercial power source 25 through the insertion opening 24, in which a breaking means 31 to interrupt the currency supply is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a central cleaner in which a cleaner body having a built-in motor fan is connected via a pipe to an insertion port provided on a floor or a wall.

[0002]

2. Description of the Related Art Conventionally, this kind of central cleaner has been constructed as shown in FIGS. Hereinafter, the configuration will be described.

As shown in FIG. 6, a cleaner body 1 has a built-in motor fan 2 and is provided on a floor or a wall of each room through a pipe 3 buried in a wall of a building or the like. Entrance 4
It is connected to. The communication line 5 is connected to the cleaner body 1 and the outlet 4
, Which is also used for the main body operation control communication and electrically connected to the nozzle 10, and is generally wired along the pipe 3 at a low voltage of 30V.

[0004] The hose 6 has a connection pipe 7 at one end,
It has a hand operation unit 8 at the other end, and is configured to connect an electric brush type nozzle 10 to the hand operation unit 8 via an extension tube 9. The hose 6, the connection pipe 7, the hand operation unit 8, and the nozzle 10 can be mechanically and electrically connected to form a hose unit 11. The power plug 12 is connected to the communication line 5
The connection terminal 13 electrically connects the receiving terminal 14 (see FIG. 7) of the insertion port 4 to the hose unit 11.

[0005] As shown in FIG. 7, an operation means 15 and a hand signal transmission means 16 are arranged in the hand operation unit 8. The signal processing means 17 is arranged in the cleaner main body 1, converts a signal from the hand signal transmission means 16 into a phase control signal, and, in accordance with the signal controlled by the phase control means 18, drives the motor by the electric blower driving means 19. The fan 2 is configured to be driven.

The operation of the above configuration will be described. The connection pipe 7 of the hose unit 11 is inserted into the insertion port 4 provided in each chamber.
When the operation is started by operating the operation means 15 of the hand operation unit 8, the signal is transmitted from the hand signal transmission means 16 to the hose 6, the connection pipe 7, the insertion port 4, the communication line 5.
The signal is transmitted to the signal processing means 17 disposed in the cleaner body 1 through the controller, converts the signal from the signal processing means 17 into a phase control signal, and in accordance with the signal controlled by the phase control means 18,
The motor fan 2 is rotated by the electric blower driving means 19 to start suction.

Due to the suction force, dust collected from the nozzle 10 passes through the extension pipe 9, the hose 6, the insertion port 4, and the pipe 3, and is stored in the dust box 20 of the cleaner body 1. The suction air is exhausted from the exhaust hole 22.

[0008]

In such a conventional configuration, a low voltage of 30 V is supplied to the communication line 5 connected to the insertion port 4 for the operation power supply of the nozzle 10, and the nozzle 1
A motor (not shown) for rotating the 0 rotating brush (not shown) is also required to rotate at a low voltage of 30V.
For this reason, it is generally incompatible with the nozzle of a household vacuum cleaner that operates at a high voltage of 100 V, and the nozzle 10 needs to be specially configured for a central cleaner, requiring special development, and requiring a wide range. There was a problem that product development became difficult.

As a solution to this problem, if a motor rotating with a commercial power supply (100 V voltage) is mounted on the nozzle 10, the communication line 5 inside the insertion port 4 where dust and the like tend to accumulate when not in use. , 100 V are always supplied, and it is necessary to consider the arc tracking resistance particularly when moisture is absorbed.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems. The nozzle is made compatible with a nozzle of a household vacuum cleaner to facilitate a wide range of product development, and the safety such as arc tracking resistance is improved. It is intended to be.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has an insertion port connected via a pipe to a cleaner body containing a motor fan, and a connection connected to this insertion port. A hand operation part is provided at the other end of the hose having a pipe part, an extension pipe and a nozzle are connected to the hand operation part, and a hose unit is configured with a connection pipe part, a hose, a hand operation part, an extension pipe and a nozzle, A commercial power supply is supplied to the hose unit from the insertion port, and a cutoff means for cutting off the power supply is provided at the insertion port.

[0012] This makes it possible to make the nozzle compatible with the nozzle of a household vacuum cleaner, thereby facilitating a wide range of product development. In addition, when the nozzle is not in use, the power supply is shut off by the shut-off means. Even if dust or the like accumulates in the insertion port, safety such as arc tracking resistance can be improved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention has a cleaner body having a built-in motor fan and a connecting pipe connected to an insertion port connected to the cleaner body via a pipe. A hose having a portion, a hand operating portion provided at the other end of the hose, an extension tube connected to the hand operating portion, and a hose unit having a nozzle, and commercial power is supplied to the hose unit from the insertion port. In addition, the outlet is provided with a shutoff means for shutting off power supply, the nozzle can be made compatible with a nozzle of a household vacuum cleaner, and a wide range of products can be easily developed and used. When the power is not supplied, the power supply is shut off by the shut-off means, so that even if dust or the like accumulates in the insertion port, safety such as arc tracking resistance when moisture is absorbed can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, an opening / closing lid is provided at the insertion port so as to be openable and closable, and a closing means such as a limit switch is opened / closed by the opening / closing operation of the opening / closing lid. When not in use, the open / close lid is closed and the limit switch is shut off to shut off the power supply. In addition, safety such as arc tracking resistance when moisture is absorbed can be improved.

According to a third aspect of the present invention, in the second aspect of the present invention, a convex portion is formed integrally with the opening / closing lid, and the limit switch is opened / closed by the convex portion.
The lid is closed when not in use, the limit switch is shut off by the projection, and the power supply is shut off, absorbing moisture even if dust accumulates in the outlet when not in use. In this case, safety such as arc tracking resistance can be improved.

According to a fourth aspect of the present invention, in the third aspect of the present invention, an inclined surface is provided at a tip of the convex portion, and the limit switch urging portion is urged by the inclined surface. Yes, when the opening / closing lid is closed after the cleaning operation, the tip of the convex portion collides with the biasing portion of the limit switch, but by providing the inclined surface at the tip of the convex portion, the biasing portion is frictionally rubbed with the inclined surface. Because of the contact, the impact force at the time of collision with the urging portion is weakened, and early damage of the limit switch can be prevented.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the limit switch urging portion is urged by the side surface of the convex portion, and the opening / closing lid is closed after the cleaning operation is completed. At this time, the convex portion collides with the limit switch urging portion, but the convex portion contacts obliquely with respect to the displacement direction of the urging portion,
The entire displacement distance in the displacement direction of the biasing part can be made longer in the biasing part than in the convex part, so even when the opening / closing lid is completely closed, the convex part does not bias too much. The breakage of the part can be prevented.

[0018] The invention described in claim 6 is the above-mentioned claim 1-
In the invention described in Item 5, a connector for connecting a power supply electric wire is provided in the vicinity of the interrupting means, and the connector is provided in the vicinity of the interrupting means. The projected area of the entire entrance can be reduced, and the mounting opening area can be reduced even when installing on a wall or a floor, thereby facilitating installation work.

According to a seventh aspect of the present invention, in the sixth aspect of the present invention, a dust removing rib is provided between the shutoff means and the connector. Through the hole into the outlet, close to the blocking means,
Although dust and the like enter, they are blocked by the dust removing ribs, water and dust do not come into contact with the electric wires and the connector, and arc tracking, short-circuit, etc. do not occur, and safety can be improved.

According to an eighth aspect of the present invention, in the invention of the sixth or seventh aspect, a case for housing the shut-off means and the connector is provided perpendicular to the mounting surface of the insertion port. The wires are routed in a direction perpendicular to the mounting surface of the insertion port, so that even when the wires are installed on a wall or a floor, the wires can be easily installed without being caught on the mounting opening ends.

According to the ninth aspect of the present invention, there is provided a method as set forth in the sixth aspect.
8. In the invention described in 8, the case accommodating the blocking means and the connector is detachably attached to the insertion port, and when manufacturing a model using a nozzle without a rotating brush, It can be easily realized by removing the case containing the connector, and a wide range of specifications can be easily realized.

[0022] The invention according to claim 10 is the invention according to claim 8.
Or, in the invention described in 9 above, the case is provided with a hole for fixing the electric wire, and the electric wire can be securely fixed to the case, so that the electric wire is caught on the mounting opening end even when the electric wire is installed on a wall or a floor. Installation work can be done easily without any problems.

[0023] The invention according to claim 11 is the invention according to claim 8.
In the invention described in any one of the first to tenth aspects, the case is provided with a drain hole, and when the insertion port is attached to the floor, water and dust are provided in the vicinity of the blocking means through the hole in which the protrusion enters the insertion port. However, it is discharged from the drain hole, does not come into contact with the electric wire or the connector, there is no occurrence of arc tracking, short circuit, and the like, and safety can be improved.

The twelfth aspect of the present invention is the first aspect of the present invention.
In the inventions described in the above-described embodiments, a casing for connecting the connection pipe portion is provided inside the insertion port, and the casing is formed of a flame-retardant resin. It is possible to prevent accidental burning when smoking cigarettes with a mark.

[0025] The invention of claim 13 provides the above-mentioned claim 1.
According to the inventions described in any one of Items 12 to 12, a casing for connecting the connection pipe portion is provided inside the insertion port, and the casing is formed of a resin having arc tracking resistance, and is originally highly safe. However, if the hose is left inserted for a long period of time while being inserted into the insertion port, it is possible to prevent the occurrence of arc tracking when moisture is attached to the accumulated dust.

[0026]

An embodiment of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIGS. 1 and 2, the cleaner body 23 has a built-in motor fan 2 and is mounted on a floor or wall of each room through a pipe 3 buried in a wall of a building or the like. It is connected to the insertion port 24 provided. Power is supplied to the outlet 24 from a commercial power supply 25 through an electric wire 26.

The hose 6 has a connection pipe portion 27 at one end and a hand operation portion 28 at the other end.
An electric brush type nozzle 10 is connected to 8 via an extension tube 9. Hose 6, connecting pipe 27,
The hand operation unit 28 and the nozzle 10 are mechanically and electrically connectable and constitute a hose unit 29. A commercial power supply 25 is supplied to the hose unit 29 from the insertion port 24, and the connection unit 30 is disconnected from the insertion port 24 with a cutoff unit 31 for cutting off power supply.
Is provided.

The wireless communication means 32 is provided inside the connection pipe section 27, and is connected to the cleaner main body 2 via the antennas 33 and 34.
3 is configured to perform wireless communication with the wireless communication unit 35 provided. The wireless communication control means 36 is connected to the connection pipe 27
And converts the hand signal transmitted via the hand signal transmitting means 38 into wireless communication information based on the input from the operating means 37 provided in the hand operating section 28 with the power from the wireless communication means 32. .

The signal processing means 39 converts the signal received by the wireless communication means 35 provided in the cleaner main body 23 into a phase control signal, and the electric blower driving means 41 drives the motor in accordance with the signal controlled by the phase control means 40. The fan 2 is driven.

The insertion port 24 is, as shown in FIGS.
An opening / closing lid 43 that opens and closes rotatably about a rotation shaft 42 is provided, and a casing 44 that connects the connection pipe 27 of the hose 6 is provided inside the lid 43. Here, the casing 4
4 is made of a flame-retardant resin, and is made of a resin having arc tracking resistance.

A motor drive current for driving the rotary brush of the nozzle 10 is supplied from the commercial power supply 25 to the connection terminal of the casing 44 via the electric wire 26, the connector 30, and the limit switch (cutoff means) 31a. When the opening / closing lid 43 is closed and the urging portion 45 of the limit switch 31a is urged by the inner convex portion 46 of the opening / closing lid 43, the motor driving current from the commercial power supply 25 is cut off in the limit switch 31a. When the lid 43 is opened and the bias of the biasing portion 45 of the limit switch 31a is removed, the motor for driving the nozzle 10 is supplied to the casing 44.

Here, the convex portion 46 is formed integrally with the opening / closing lid 43, and the urging portion 45 of the limit switch 31a is urged by the convex portion 46. Further, an inclined surface 47 is provided at the tip of the convex portion 46 so that when the opening / closing lid 43 is closed, the inclined surface 47 comes into contact with the urging portion 45 of the limit switch 31a while rubbing. Further, when the opening / closing lid 43 is closed, the urging portion 45 of the limit switch 31a is urged by the side surface of the convex portion 46.

The connector 30 for connecting the electric wire 26 connected to the insertion port 21 is provided near the limit switch 31a, and a dust removing rib 48 is provided between the connector 30 and the limit switch 31a. The connector 30 and the limit switch 31a are housed in a case 49, and the case 4
9 is attached to the back side of the insertion port 51 perpendicularly to the mounting surface of the insertion port 51, and the case 49 is detachable from the insertion port 51.

A fixing hole 50 for fixing the electric wire 26 is provided in the insertion portion of the electric wire 26 of the case 49, and the electric wire 26 is fixed. The case 49 is provided with a drain hole 51 near the limit switch 31a.

The operation of the above configuration will be described. When the operation is started by connecting the connecting pipe portion 27 of the hose unit 29 to the outlet 24 provided in each room and operating the operating means 37 of the hand operating section 28, the signal is transmitted from the hand signal transmitting means 38 to the hose signal transmitting means 38. 6 and connecting pipe 27
Is converted into wireless communication information by the wireless communication control means 36, and transmitted from the wireless communication means 32 on the hose 6 side via the antenna 33.

The transmission signal is received by the antenna 34 of the cleaner main body 23 and the radio communication means 35 in the cleaner main body 23 is received.
Is transmitted to This signal is converted into phase control by the signal processing unit 39, and the motor fan 2 is rotated by the electric blower driving unit 41 according to the signal controlled by the phase control unit 40, and suction is started.

The dust collected from the nozzle 10 by the suction force passes through the extension pipe 9, the hose 6, the insertion port 24, and the pipe 3, and is stored in the dust box 20 in the dust box 20 in the cleaner body 23. The suction air is discharged to the outside of the cleaner body 20 through the exhaust hole 22.

At this time, a limit switch (cutoff means) 31a for supplying power from the commercial power supply 25 to the hose unit 29 through the insertion port 24 and cutting off the power supply to the insertion port 24.
Is provided, the nozzle 10 can be made compatible with the nozzle of a household vacuum cleaner, so that a wide variety of products can be easily developed, and when not in use, the power supply is cut off by the limit switch 31a. Therefore, even if dust or the like accumulates in the insertion port 24, safety such as arc tracking resistance when absorbing moisture can be improved.

That is, when not in use, the casing 4
4. Pull out the connection pipe 27 of the hose 6 from the
Is closed, but the convex portion 46 on the inner side of the opening / closing lid 43 urges the urging portion 45 of the limit switch 31a.
Even if the motor drive current is cut off and dust or the like accumulates in the insertion port 24, safety such as arc tracking resistance when moisture is absorbed can be improved.

In use, the connecting pipe portion 27 of the hose 6 is inserted into the casing 44 by opening the opening / closing lid 43. At this time, even if dust or the like is accumulated in the casing 44, the connecting pipe portion of the hose 6 is not used. Since it is rubbed and removed by the portion 27, safety such as arc tracking resistance when moisture is absorbed can be improved.

Further, the convex portion 46 is formed integrally with the opening / closing lid 43, and the limit switch 31a is opened / closed by the convex portion 46. Therefore, when not in use, the opening / closing lid 43 is closed. Since the power supply is cut off when the power supply 31a is shut off, safety such as arc tracking resistance when absorbing moisture can be improved even if dust or the like accumulates in the outlet 24 when not in use. it can.

An inclined surface 47 is provided at the tip of the convex portion 46, and the biasing portion 45 of the limit switch 31a is connected to the inclined surface 47.
When the cover 43 is closed, the inclined surface 47 at the tip of the convex portion 46 urges the urging portion 45 of the limit switch 31a, but the inclined surface 47 urges the urging portion 45. , And the impact force at the time of collision is weakened, so that the urging portion 45 of the limit switch 31a can be prevented from being damaged early.

When closing the opening / closing lid 43, the convex portion 46 is closed.
Is configured to bias the biasing portion 45 of the limit switch 31a on the side surface of
The convex portion 46 urges the urging portion 45 of the limit switch 31a, but the convex portion 46 comes into contact with the moving direction of the urging portion 45 obliquely, and the moving distance of the urging portion 45 in the moving direction is convex. 46
Since the urging portion 45 can be made longer, even when the opening / closing lid 43 is completely closed, the convex portion 46 is not excessively urged, so that damage to the urging portion 45 can be prevented.

In the vicinity of the limit switch 31a,
Since the connector 30 for connecting the power supply electric wire 26 is provided, the projected area of the entire insertion port 24 that integrates these components can be reduced, and the mounting opening area can be set even when the connector is installed on a wall or a floor. Can be made smaller and installation work can be made easier.

When the outlet 24 is mounted on the floor,
The outlet 24 is directed toward the ceiling, and water or dust, etc., is present near the limit switch 31a through the hole 52 where the convex portion 46 enters the outlet 24, such as when water is zeroed into the outlet 24. Although there is a possibility of intrusion, since the dust removing rib 48 is provided between the connector 30 and the limit switch 31a, the dust removing rib 48 prevents the dust removing rib 48 from contacting the electric wire 26 and the connector 30 with water and dust. Arc tracking, short circuit, etc. do not occur, and safety can be improved.

When the insertion port 24 is installed on a wall or a floor, a mounting hole is provided and a case 49 is inserted into the mounting hole. The case 49 is provided vertically on the back surface of the insertion port 24. Also, the electric wire 26 is also routed in a direction perpendicular to the insertion port 24, so that the electric wire 26 does not catch on the end of the mounting hole, so that the installation work can be easily performed.

Since the case 49 is detachable from the insertion port 24, for example, when configuring a central cleaner using the nozzle 10 without a rotating brush, a case in which the limit switch 31a and the connector 30 are housed. By removing 49, the insertion port 24 can be easily realized, and a wide range of specifications can be easily realized.

Also, a fixing hole 50 for fixing the electric wire 26 is provided in the insertion portion of the electric wire 26 of the case 49, and the electric wire 26 is fixed. The case 49 is inserted into the hole, and the electric wire 26 is fixed in the fixing hole 50. Therefore, the electric wire 26 is not shaken and does not catch on the end of the mounting hole.

When the outlet 24 is mounted on the floor,
The outlet 24 is directed toward the ceiling, and water, dust, or the like is proximate to the limit switch 31a through the hole 52 in which the protrusion 46 enters the outlet 24, such as when water is zeroed in the outlet 24. However, since the case 49 is provided with the drain hole 51 near the limit switch 31a, the case 49 is discharged from the drain hole 51, and the electric wire 26 and the connector 30 are discharged.
, And there is no occurrence of arc tracking, short circuit, etc., and safety can be improved.

Further, since the casing 44 for connecting the connection pipe portion 27 provided inside the insertion port 24 is formed of a resin having arc tracking resistance, when a lit cigarette is sucked. However, even if the burning can be prevented, the safety is originally high, but the safety can be further improved.

Further, since the case 44 is formed of a resin having arc tracking resistance, the hose 6 is left for a long period of time with the hose 6 inserted into the insertion port 24, so that the case 6 can be used even when moisture adheres to the accumulated dust. Although the arc tracking can be prevented and the safety is originally high, the safety can be further improved.

[0053]

As described above, according to the first aspect of the present invention, the cutoff means for supplying commercial power to the hose unit from the insertion port and cutting off the power supply at the insertion port is provided. Therefore, the nozzle can be made compatible with the nozzle of a household vacuum cleaner, making it easy to develop a wide range of products.When not in use, the power supply is shut off by the shut-off means, so that the Even if dust or the like accumulates, safety such as arc tracking resistance when absorbing moisture can be improved.

According to the second aspect of the present invention, an opening / closing lid is provided at the insertion opening so as to be openable and closable, such as a limit switch, by opening / closing the opening / closing lid. The lid is closed when not in use and shuts off the limit switch to shut off the power supply. Safety such as arc tracking resistance can be improved.

According to the third aspect of the present invention, the convex portion is formed integrally with the open / close lid, and the limit switch is opened / closed by the convex portion. Therefore, the open / close lid is closed when not in use. The convex switch cuts off the limit switch and shuts off the power supply, so even if dust accumulates in the outlet when not in use, safety such as arc tracking resistance when absorbing moisture is reduced. Can be improved.

According to the fourth aspect of the present invention, an inclined surface is provided at the tip of the convex portion, and the limit switch urging portion is urged by the inclined surface. When the is closed, the tip of the projection collides with the limit switch biasing part, but by providing an inclined surface at the tip of the projection,
Since the biasing portion comes into contact with the inclined surface while rubbing, the impact force at the time of collision with the biasing portion is weakened, and early damage of the limit switch can be prevented.

According to the fifth aspect of the present invention, since the limit switch urging portion is urged by the side surface of the convex portion,
When the opening / closing lid is closed after cleaning work, the convex part collides with the limit switch urging part, but the convex part contacts obliquely with respect to the moving direction of the urging part, and all the movement in the moving direction of the urging part is changed. Because the distance can be made longer for the biasing part than for the convex part,
Even when the opening / closing lid is completely closed, the projection is not excessively biased, so that damage to the biasing portion can be prevented.

According to the sixth aspect of the present invention, since the connector for connecting the power supply electric wire is provided near the interrupting means, the connector is provided near the interrupting means. The projection area of the entire insertion opening that integrates the above components can be reduced, and the installation opening area can be reduced even when installing on a wall or a floor, thereby facilitating the installation work.

According to the seventh aspect of the present invention, since the dust removing rib is provided between the shut-off means and the connector, when the insertion port is mounted on the floor, the convex portion passes through the hole that enters the insertion port. , Water and dust enter the vicinity of the shut-off means, but are prevented by the dust removal ribs, so that water and dust do not come into contact with the wires and connectors.
No arc tracking, short circuit, etc.
Safety can be improved.

According to the eighth aspect of the present invention, the case for housing the shut-off means and the connector is provided perpendicular to the mounting surface of the insertion port. When the cable is installed on a wall or a floor, the wire can be easily installed without being caught by the mounting opening end.

According to the ninth aspect of the present invention, since the case accommodating the blocking means and the connector is detachably attached to the insertion port, a model using a nozzle without a rotary brush is manufactured. In this case, it can be easily realized by removing the entire case in which the shutoff means and the connector are housed, and a wide range of specifications can be easily realized.

According to the tenth aspect of the present invention,
Since the case is provided with a hole for fixing the electric wire, the electric wire can be securely fixed to the case. Therefore, even when the electric wire is installed on a wall or a floor, the electric wire is not caught on the end of the mounting opening, and the installation work can be easily performed.

According to the eleventh aspect of the present invention,
Since the case is provided with a drain hole, when the insertion port is mounted on the floor, water, dust, etc. enter the vicinity of the blocking means through the hole where the projection enters the insertion port, but is discharged from the drain hole. Without touching wires and connectors, arc tracking,
There is no short circuit or the like, and safety can be improved.

According to the twelfth aspect of the present invention,
A casing for connecting the connection pipe portion is provided inside the insertion port, and since the casing is formed of a flame-retardant resin, it is originally highly safe, but it is used when sucking a lit cigarette. In the unlikely event of burning, it can be prevented.

According to the thirteenth aspect of the present invention,
Since a casing for connecting the connection pipe portion is provided inside the insertion port, and the casing is formed of a resin having arc tracking resistance, although the safety is originally high, the hose is inserted into the insertion port. For a long time,
It is possible to prevent arc tracking in the event that moisture adheres to the accumulated dust.

[Brief description of the drawings]

FIG. 1 is a block diagram of a central cleaner according to an embodiment of the present invention.

FIG. 2 is an overall configuration diagram of the central cleaner with a part cut away.

FIG. 3 is a partially cutaway plan view of an insertion port of the central cleaner.

FIG. 4 is a cross-sectional view of the insertion port of the central cleaner.

FIG. 5 is an arrow view from the back side of the insertion port of the central cleaner.

FIG. 6 is a partially cutaway overall configuration view of a conventional central cleaner.

FIG. 7 is a block diagram of the central cleaner.

[Explanation of symbols]

 2 Motor fan 6 Hose 9 Extension pipe 10 Nozzle 23 Vacuum cleaner main body 24 Insert port 25 Commercial power supply 27 Connection pipe part 28 Hand operation part 29 Hose unit 31 Shut-off means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideki Hayashi 1006 Kadoma Kadoma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. Term (reference) 3B057 DA03 DA04 DA08 DB01 DE01

Claims (13)

[Claims] 1. A hose having a cleaner main body with a built-in motor fan and having a connection pipe portion connected to an insertion port connected to the cleaner main body via a pipe, a hand provided at the other end of the hose. An operation unit, an extension tube connected to the hand operation unit, a hose unit having a nozzle,
A central cleaner which supplies commercial power to the hose unit from the insertion port, and has a shutoff means for cutting off power supply to the insertion port. 2. The central cleaner according to claim 1, wherein an opening / closing lid is provided at the insertion port so as to be openable and closable, such as a limit switch, by the opening / closing operation of the opening / closing lid. 3. The central cleaner according to claim 2, wherein a convex portion is formed integrally with the opening / closing lid, and the limit switch is opened / closed by the convex portion. 4. An inclined surface is provided at the tip of the projection, and the limit switch urging portion is urged by the inclined surface.
The stated central cleaner. 5. The central cleaner according to claim 4, wherein the limit switch urging portion is urged by the side surface of the projection. 6. The central cleaner according to claim 1, further comprising a connector for connecting a power supply wire near the blocking means. 7. The central cleaner according to claim 6, wherein a dust removing rib is provided between the blocking means and the connector. 8. A case for housing the shut-off means and the connector,
The central cleaner according to claim 6 or 7, wherein the central cleaner is provided perpendicular to a mounting surface of the insertion port. 9. A case for storing the shut-off means and the connector,
The central cleaner according to any one of claims 6 to 8, wherein the central cleaner is detachably attached to the insertion port. 10. The central cleaner according to claim 8, wherein a hole for fixing an electric wire is provided in the case. 11. The case according to claim 8, wherein a drain hole is provided in the case.
11. The central cleaner according to any one of 10 above. 12. The central cleaner according to any one of 1 to 11, wherein a casing for connecting a connection pipe portion is provided inside the insertion port, and the casing is formed of a flame-retardant resin. 13. A casing provided with a connecting pipe portion inside the insertion port, wherein the casing is formed of a resin having arc tracking resistance.
Central cleaner according to the item.