JPS6314764Y2 - - Google Patents

Description

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

Conventionally, there have been vacuum cleaners in which the suction force, or the speed of the electric blower, can be controlled depending on the type of floor surface or how clogged with dirt, etc., using an operating section installed on the main body of the vacuum cleaner. It is questionable whether truly correct control is being carried out according to the type of equipment. 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 best condition depending on the type of suction port body or the type of floor surface.

This idea was developed in consideration of these points, and allows the speed of the electric blower to be changed depending on the conditions of the suction port used, and even with the same suction port, it can be adjusted depending on the type of floor surface. The purpose is to create a vacuum cleaner that can control the speed of an electric blower under the best conditions.

This idea connects a suction port body with a variable resistance internally to the suction port of the dust collection case via a suction pipe body such as a suction hose or an extension pipe, and at this time, the variable resistance of the suction port body is is electrically connected to the motor circuit on the vacuum cleaner side, thus controlling the speed of the electric blower within a range suitable for the suction body,
Furthermore, the variable resistance can be changed according to the type of floor surface using the operating section, so that cleaning can be performed under the best conditions.

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 collection 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 are provided. This suction port body 9 has a connecting pipe 10 that is fitted into the extension pipe 4, and a variable resistor 11 whose resistance value is set in a range suitable for this suction port body 9 is installed inside. Further, inside the suction port body 9, a brush chamber 13 with an opening at the bottom that accommodates the rotating brush 12 and a ventilation passage 15 that accommodates the turbine 14 are formed. The connecting pipe 10 is fitted into this ventilation passage 15 . The turbine 14 and the rotating brush 12 are connected by a belt 16. A partition plate 21 between the ventilation passage 15 and the brush chamber 13 is formed with nozzle holes 17 and 18 facing the lower part of the turbine 14 and an opening 19 having a large opening area in communication with each other. Furthermore, an operating section 20 for varying the variable resistance 11 is provided inside the suction port body 9 so as to be slidable and fixed at any position. A wind speed adjusting plate 22 that slides along the partition plate 21 is integrally connected to this operating section 20.

Next, the motor control circuit 23 provided in the electric case 1 will be explained with reference to FIG. A series circuit of a resistor 26 and a capacitor 27, a triac 28, a series circuit of a semi-fixed resistor 29, a resistor 30, and a capacitor 31 are connected in parallel between the power supply 24 and the electric blower 25, which are connected to each other. ing. Furthermore, the resistor 30 and the capacitor 31
A pulse generating element 32 is connected to the gate of the triac 28 as the phase control element. Furthermore, a capacitor 33 for noise prevention is connected to the electric blower 25. Further, a terminal 35 is connected between the semi-fixed resistor 29 and the resistor 30, and the electric blower 2
A terminal 36 is connected to one pole of the suction port 5 via a resistor 34, and these terminals 35 and 36 are provided inside the suction port 5. These terminals 35 and 36 are connected to a connecting terminal A provided on the connecting pipe 6 of the suction hose 3.
It is connected to connection terminals 37 and 38 as shown in FIG.
These connection terminals 37 and 38 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 39 and 40 as connection terminals B disposed on the grip tube 7 for each pole. Furthermore, connection terminals 41, 42 and 43 are connected to each other pole by pole at both ends of the extension tube 4.
44 is provided, and a connecting pipe 1 of the suction port body 9 is provided.
0 is provided with resistance terminals 45 and 46 connected to both poles of the variable resistor 11. Connection terminal 3
9, 40 and the connecting terminals 41, 42 are in contact with each other when the extension tube 4 is fitted to the grip tube 7, and the connecting terminals 43, 44 and the resistance terminals 45, 46 are in contact with the extension tube 4 at the suction port. When the connecting pipes 10 of No. 9 are fitted together, each pole makes contact. Connection terminals 37, 38 and terminal 35,
The connection structure with 36 is well known and its explanation will be omitted.
The connection terminals 39, 40 are formed on the inner surface of the grip tube 7, as shown in FIG. Connection terminals 41, 42
is formed on the outer periphery of one end of the extension tube 4, as shown in FIG. The structure of the connecting terminals 43 and 44 formed at the other end of the extension tube 4 is similar to that of the connecting terminals 39 and 4 of the grip tube 7.
Since it has the same shape as 0, illustration is omitted. The resistance terminals 45 and 46 are as shown in FIG. 4, and have the same shape as the connection terminals 41 and 42 formed at the tip of the extension tube 4 as shown in FIG.

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 34 is connected to the motor circuit 23.
The variable resistor 11 is disconnected from the motor circuit 23. Therefore, regardless of the type of suction port body 9 to be used, the electric blower 25 rotates at a predetermined speed by the current controlled by the resistor 34. When the movable contact a is connected to the other fixed contact c, the variable resistor 11 is connected to the motor circuit 23. The resistance value of this variable resistor 11 is determined within a range suitable for the suction port body 9 used, but it is possible to set the resistance value to a value that meets the best conditions depending on the type of floor surface. That is, the operation section 20
If the wind speed adjustment plate 22 is slid outward by operating the , the opening 19 and the nozzle holes 17, 18 are fully opened, the wind speed blowing against the turbine 14 is greatly weakened, and the turbine 14 loses its driving force. This turbine 1
4 and the rotating brush 12 are not driven when cleaning between tatami mats or wooden boards, and does not require much suction power. Therefore, by operating the operation unit 20, the resistance value of the variable resistor 11 is set to the maximum value and the speed of the electric blower 25 is lowered. When cleaning a carpet, the operating section 20 is slid inward together with the wind speed adjusting plate 22 to close the opening 19. This narrows the suction airflow and increases the wind speed, causing the turbine 14 to rotate and drive the rotating brush 12. Operation unit 20 at this time
As a result of this operation, the resistance value of the variable resistor 11 decreases and the speed of the electric blower 25 increases. This results in
It is possible to increase the suction airflow and rotate the rotating brush 12 at high speed to efficiently release dust adhering to the carpet. If the nozzle hole 18 is closed, the suction air speed will further increase, the resistance value of the variable resistor 11 will be minimized, the rotation of the electric blower 25 will increase, and the suction air volume will further increase. Depending on the length of the carpet, one of the two positions mentioned above is used.

In this way, since the variable resistor 11 is provided on the suction port body 9, the speed of the electric blower 25 can be controlled within a range suitable for the suction port body 9, and moreover, the speed of the electric blower 25 can be controlled according to the type of floor surface. It is possible to change the speed of the electric blower 25 to suit the best conditions. Furthermore, since the variable operation of the variable resistor 11 and the wind speed adjustment operation can be performed in conjunction with each other, the operation is extremely simple.

Since this invention is constructed as described above, the speed of the electric blower can be controlled within a range suitable for the suction port used by the variable resistor installed inside the suction port used, and moreover, it can be adjusted to suit the type of floor surface. By adjusting the resistance value of the variable resistor accordingly, the speed of the electric blower can be changed under the best conditions, resulting in extremely efficient cleaning.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
Figure 2 is a perspective view of a portion of the suction hose, Figure 3 is a perspective view of a portion of the extension pipe, Figure 4 is a perspective view of the suction port body, Figure 5 The figure is a plan view showing the inside of the suction port body, FIG. 6 is a vertical sectional side view of a portion of the suction port body taken along line A-A in FIG. 5, and FIG. 7 is an electric circuit diagram. 2...Dust collection case, 3...Suction hose (suction pipe body), 4...Extension pipe (suction pipe body), 5...Suction port,
9... Suction port body, 10... Connection pipe, 11...
variable resistor, 20... operating unit, 23... motor control circuit, 25... electric blower, 28... triax (phase control element), 35-36... terminal, 37,
38... Connection terminal (connection terminal A), 39, 40...
... Connection terminal (connection terminal B), 45-46 ... Resistance terminal, 47 ... Suction port body, 48 ... Operation section.

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.
The suction port body has a connecting pipe that is fitted to the other end of the suction pipe body, and is connected to an operating part for changing the usage pattern according to the floor surface and changing the resistance value. A vacuum cleaner characterized in that a resistance is provided, and a resistance terminal connected to the variable resistance and connected to the connection terminal B of the suction pipe body is provided on the connection pipe of the suction port body.