JPS643495B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention comprises a vacuum cleaner body with a built-in electric blower, a plurality of pipes that transmit air flow and most of which are piped inside a house, and a vacuum cleaner provided at the end of each pipe. This invention relates to a central cleaner having a hose outlet and a cleaning hose (including an extension pipe and a floor suction port) attached to the hose outlet.

Traditionally, with this type of vacuum cleaner, it was not possible to connect the hose to two or more outlets at the same time, but in recent years, high-output vacuum cleaners have been used to connect the hose to several outlets at the same time. This led to cases where a hose was needed to be connected. However, if you start cleaning in another area when you have already cleaned one area, the pressure in all the pipes is already negative, so it takes a lot of force to put the lid on the other outlet. Moreover, when the hose is removed, the lid tries to close with strong force, resulting in damage to the insertion port or injury to the user's fingers.

Accordingly, an object of the present invention is to provide a central cleaner that can be easily and safely connected to and disconnected from a receptacle even if it is already used at one location.

A first embodiment of the invention is shown in FIGS. 1 to 4.

First of all, Figure 1 shows the piping configuration of the central cleaner, where 1 is the vacuum cleaner body installed at any position in the house, and 2 is the outlet 3a installed at a position suitable for cleaning each room. 3c and the vacuum cleaner main body 1.

Figure 3 shows the structure of the vacuum cleaner main body 1.
5 is a dust collection container removably attached to the lower part of the upper body 4 via a buckle 6; 7 is an air intake port of a conduit 2 provided in the dust collection container 5; 8 9 are U-shaped support legs fixed to both sides of the upper body 4 to support the cleaner body 1, and 9 is a handle for transporting the dust collection container 5.

FIG. 4 shows the configuration of the hose outlets 3a to 3c, where 10 is a wall or floor surface to which the hose outlets 3a to 3c are attached, and 11 is a connection body embedded in the wall or floor surface 10. A pipe section 12 to which the end of the pipe line 2 is connected is provided approximately at the center. Reference numeral 13 denotes a socket main body having a socket 14 for a cleaning hose (not shown), which is fixed to the outside (indoor side) of the wall or floor 10 together with the connector 11. 15 is a lid rotatably attached to the insertion port body 13, and 16 is a gasket fixed to the inside of the lid 15 to prevent air leakage from the insertion port 14. Reference numeral 17 indicates a gasket interposed at the joint between the outlet main body 13 and the connecting body 11, and 18 indicates a connection terminal provided in the outlet portion 14, and a hand switch (not shown) provided at the hand of the electric blower and the hose. The hose is provided for electrical connection by inserting the hose into the insertion port 14. 19 is a normally closed switch for temporary stop provided near the hose insertion port 14.

The electric circuit will be explained with reference to FIG. 20 is a plug connected to an AC power source, 21 is an electric blower built into the vacuum cleaner body 1, and 22 is a converter that converts the commercial power source to a low voltage and supplies current to hand switches 23a to 23c disposed near the hose. A transformer 24 is a relay that drives the electric blower 21. The normally closed switches 19 described above are installed on the side of each of the insertion ports 3a to 3c (referred to as 19a to 19c), and these are connected in series to each other to form a series circuit of the secondary side of the transformer 22 and the coil of the relay 24 (relay circuit). ). Similarly, the hand switches 23a to 23c are connected in parallel to each other and inserted into the relay circuit.

Explain circuit operation. When any of the hand switches 23a to 23c is operated, the relay circuit is closed, so the relay 24 is activated and the electric blower 21 is activated, thereby creating negative pressure in the pipe line 2 and the hose, making cleaning possible. When connecting a hose to another outlet 3b while one outlet 3a is in use and the blower 21 is operating, first connect the outlet 3a to the other outlet 3b.
When the normally-closed switch 19b of b is operated, the relay circuit opens, the power to the relay 24 is cut off, the electric blower 21 stops, and the negative pressure inside the pipe line 2 decreases, causing the cover 15 of the insertion port 3b to close. can be easily opened and the hose inserted.

After connecting the hose to the insertion port 3b, if the normally closed switch 19b is returned to its original position, the electric blower 21 will be activated again, allowing cleaning at two locations at the same time. Similarly, if the hose is used at two locations at the same time and you want to remove the hose from one of the locations from the insertion port 3b, operate the normally closed switch 19b to reduce the negative pressure in the conduit 2 before removing the hose. If it is pulled out, the cover 15 of the insertion port 3b will not close with strong force and damage the insertion port 3b or the user's fingers. The same applies to the other insertion ports 3c.

With this configuration, the hose insertion ports 3a~
By simply installing normally closed switches 19a to 19c on 3c, you can use a central cleaner with a strong suction force that can be used at two or more outlets at the same time without requiring much force when opening the lid. It is possible to obtain a central cleaner of great practical value, which does not damage the lid, insertion port, or fingers when the hose is pulled out.

A second embodiment of the invention is shown in FIGS. 5 and 6. In other words, this central cleaner is
In the first embodiment, normally closed switches 19a to 19c and pilot lamps 25a to 25c are provided near the hose insertion ports 3a to 3c, and each pilot lamp 25a to 25c is connected to the coil of a relay 24 in parallel.

Explain circuit operation. When any of the hand switches 23a to 23c is operated, the relay 24 is operated to energize the electric blower 21, creating negative pressure in the pipe line 2 and the hose, making cleaning possible. At this time, the pilot lamps 25a to 25c are also turned on. In this state, a person who tries to clean by connecting a hose to another outlet 3b sees the pilot lamp 25b lit and knows that the electric blower 21 is operating, and then operates the normally closed switch 19b. Then, the power to the relay 24 is cut off, the electric blower 21 stops, and the negative pressure inside the pipe line 2 decreases, causing the outlet 3b to
The lid body 15 can be easily opened. After connecting the hose to the insertion port 3b, turn the normally closed switch 19b
When the electric blower 21 is returned to its original state, the electric blower 21 is energized again and two places can be cleaned at the same time. Next, even if the hose is used at two locations at the same time and the hose is removed from one location, for example, from the insertion port 3b, the pilot lamp 25b remains lit even when the hand switch 23b of that hose is turned off. Inlet 3
If you use it in step a and therefore know that the electric blower 21 is in operation, operate the normally closed switch 25b to reduce the negative pressure in the pipe line 2 and then remove the hose, the difference will be Cover body 1 of entrance 3b
5 will not close with strong force and damage the insertion port 3b or the user's fingers.

With this configuration, it is possible to know whether or not the electric blower 21 is in operation by lighting the pilot lamps 25a to 25c near the insertion port, and it is convenient because it can be determined whether or not the normally closed switch is operated. .

As described above, the central cleaner of the present invention is provided with a normally closed temporary stop switch near each outlet to temporarily stop the operating blower, making it safe to open and close the cover of the outlet. It also has the advantage of being easy to perform. As an embodiment, if a pilot lamp is provided at the insertion port to display the operating status of the blower, it is easy to understand whether the blower is operating or not.

[Brief explanation of drawings]

Fig. 1 is a piping diagram of the central cleaner according to the first embodiment of the present invention, Fig. 2 is an electric circuit diagram, Fig. 3 is a perspective view of the main body, Fig. 4 is a sectional view of the outlet, and Fig. 5 is a diagram of the central cleaner.
The figure is a circuit diagram of the second embodiment, and FIG. 6 is a sectional view of the insertion port. 1...Vacuum cleaner body, 2...Pipe line, 3a to 3c...
...Inlet, 15...Lid, 19a-19c...Normally closed switch, 21...Electric blower, 23a-23
c...Hand switch, 25a-25c...Pilot lamp.

Claims (1)

[Scope of Claims] 1. A vacuum cleaner body that has a built-in electric blower and is driven by suction; an insertion port with an opening/closing lid provided at each end of a plurality of pipes communicating with the vacuum cleaner body; A cleaning hose with a hand switch that is removably inserted into the outlet and turns on the electric blower when turned on, and a cleaning hose that is attached to the side of the outlet to operate the electric blower that is already in operation. A central cleaner equipped with a normally closed switch to shut it down. 2. The central cleaner according to claim 1, wherein the insertion port is provided with a pilot lamp on the side that displays the operating status of the electric blower.