JPS6314763Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a vacuum cleaner.

Conventionally, there are devices that manually control the suction force, or the speed of the electric blower, depending on the type of floor surface or how clogged with dirt, etc. However, because it is manual, operation is cumbersome and there are many errors, making it difficult to use. It is questionable whether truly correct control is being performed depending on the type of suction port body. There are also electric blowers that automatically control the speed of the electric blower by detecting changes in vacuum pressure and air volume, but the condition settings are average and the user has no choice but to make the dust more effective. This method has the disadvantage that it is not possible to intentionally set the control state to the highest condition depending on the type of suction port body or the type of floor surface.

This idea was developed with these points in mind, and the purpose is to create a vacuum cleaner that can automatically control the speed of the electric blower depending on the type of suction port used. .

This idea involves installing a resistor with a resistance value corresponding to each suction port in each of the multiple types of suction ports, and collecting the suction ports to be used through suction pipes such as suction hoses and extension pipes. Connect to the suction port of the dust case in a conduit,
At this time, the resistance of the suction port is electrically connected to the vacuum cleaner's motor circuit, and the speed of the electric blower is automatically controlled according to the selected suction port. This structure is designed to simplify the process and improve the cleaning effect.

An embodiment of this invention will be explained based on the drawings.
First, the electric case 1 and the dust collection case 2 are detachably connected. Further, a suction hose 3 and an extension pipe 4, each of which is a suction pipe body, are provided. A connecting pipe 6 provided at one end of a suction hose 3 is fitted into the suction port 5 of the dust collecting case 2, and a remote control switch 8 is provided in a grip pipe 7 provided at the other end of the suction hose 3. A plurality of suction port bodies 9 and 10 are provided. These suction port bodies 9 and 10 have a connecting pipe 11 that is fitted into the extension pipe 4, and a control resistor 12 that is set to a set value corresponding to each suction port body 9 and 10 is installed inside. ing.

Next, the motor control circuit 13 provided in the electric case 1 will be explained with reference to FIG. A series circuit of a resistor 16 and a capacitor 17, a triac 18 as a phase control element, and a semi-fixed resistor 1 are connected between the power supply 14 and the electric blower 15, which are connected to each other.
9 and a series circuit of a resistor 20 and a capacitor 21 are connected in parallel. Furthermore, a pulse generating element 22 connected between the resistor 20 and the capacitor 21 is connected to the gate of the triac 18. Furthermore, a capacitor 23 for noise prevention is connected to the electric blower 15.
Further, a terminal 25 is connected between the semi-fixed resistor 19 and the resistor 20, a terminal 26 is connected to one pole of the electric blower 15 via a resistor 24,
These terminals 25 and 26 are provided inside the suction port 5. These terminals 25 and 26 are connected to connection terminals 27 and 28, which serve as connection terminals A, provided on the connection pipe 6 of the suction hose 3. These connection terminals 27 and 28 are connected to a movable contact a and a fixed contact b of the remote control switch 8 via coiled wires installed inside the suction hose 3. This fixed contact b and another fixed contact c are connected to connection terminals 29 and 30, which serve as connection terminals B, arranged on the grip tube 7 for each pole. Furthermore, connection terminals 31, 32 and 33, 34 are connected to each other pole by pole at both ends of the extension tube 4.
The connection pipes 11 of the suction ports 9 and 10 are provided with resistance terminals 35 and 36 connected to both poles of the resistance 12, respectively. connection terminal 29,
30 and the connecting terminals 31 and 32 are in contact with each other on a pole-by-pole basis when the extension tube 4 is fitted to the grip tube 7, and the connecting terminal 3
3 and 34 and the resistance terminals 35 and 36 come into contact with each other on a pole-by-pole basis when the connecting pipes 11 of the suction ports 9 and 10 are fitted into the extension pipe 4. Connection terminals 27, 28 and terminal 2
The connection structure with 5 and 26 is well known and the explanation thereof will be omitted. The connection terminals 29 and 30 are formed on the inner surface of the grip tube 7, as shown in FIG. connection terminal 31,
32 is formed on the outer periphery of one end of the extension tube 4, as shown in FIG. The structure of the connecting terminals 33 and 34 formed at the other end of the extension tube 4 is similar to that of the connecting terminal 2 of the grip tube 7.
Since it has the same shape as 9 and 30, illustration thereof is omitted. The resistance terminals 35 and 36 are as shown in FIGS. 4 and 5, and the shape of the extension tube 4 is as shown in FIG.
It has the same shape as the connecting terminals 31 and 32 formed at the tips of the.

In such a configuration, when the movable contact a of the remote control switch 8 is turned from neutral to the fixed contact b side, the resistor 24 is connected to the motor circuit 13.
The resistor 12 is disconnected from the motor circuit 13. Therefore, the suction port body 9 to be used
Or irrespective of the type 10, the electric blower 15 rotates at a predetermined speed by the current controlled by the resistor 24. When the movable contact a is connected to the other fixed contact c, the resistor 12 is connected to the motor circuit 13. This resistance 12 is the suction port body 9 or 10 to be used.
The charging value of the capacitor 21,
The conduction angle of the triax 18 changes and the electric blower 15
speed is controlled. Since the suction port body 9 includes a rotating brush and a turbine that drives the rotating brush (not shown), the resistance value of the resistor 12 is set to be small. Therefore, the speed of the electric blower 15 is maximized, and the flow speed of the suction airflow that drives the turbine is also increased, and the power is increased. Since the suction port body 10 such as the Tsuruguchi has a small suction port, the resistance value of the resistor 12 is set to the maximum value. Therefore, the electric blower 15 can prevent temperature rise even if the speed is low and the suction airflow is poor.

In this way, by connecting the movable contact a to the fixed contact c, the speed of the electric blower 15 can be automatically changed depending on the type of the suction ports 9 and 10.

Note that the remote control switch 8 may omit one fixed contact b. In this case, the resistor 24 is also unnecessary.

Since this invention is configured as described above, the electric blower can be driven at a speed that matches the conditions of the selected suction port, and at this time, the resistance that controls the current flowing to the electric blower is set for each suction port. Since it is internally installed, there is no risk of erroneous control, and it has the advantage of simplifying the operation and increasing the cleaning effect.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a reduced perspective view showing the overall configuration, Figure 2 is a perspective view of a part of the suction hose, Figure 3 is a perspective view of a part of the extension pipe 4, and Figures 4 and 5 are of the suction port body. The perspective view and FIG. 6 are electrical circuit diagrams. 2...Dust collection case, 3...Suction hose (suction pipe body), 4...Extension pipe (suction pipe body), 5...Suction port,
9-10... Suction port body, 11... Connection pipe, 1
2...Resistor, 13...Motor control circuit, 15...
Electric blower, 18... triax (phase control element), 25-26... terminal, 27, 28... connection terminal (connection terminal A), 29, 30... connection terminal (connection terminal B), 35-36... ...Resistance terminal.

Claims (1)

[Scope of utility model registration request] A terminal connected to a motor control circuit for driving an electric blower is provided at the suction port of the dust collection case, and a connection terminal A connected to the terminal is provided at one end of the suction pipe communicating with the suction port. A connecting terminal B electrically connected to the connecting terminal A at the other end of the suction pipe body.
and a plurality of types of suction ports each having a connecting pipe fitted to the other end of the suction pipe body, and each of these suction ports is provided with a control resistance having a set value corresponding to each suction port. A vacuum cleaner characterized in that a resistance terminal for connecting the control resistor to the connection terminal B of the suction pipe body is provided on the connection pipe of the suction port body.