JPH0141327B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a vacuum cleaner in which an electric blower is controlled to turn on and off using optical signals in remote control operation.

BACKGROUND ART Conventionally, there is a vacuum cleaner of this type as shown in FIG. That is, an electric blower 3 connected to a commercial AC power supply 1 via a noise prevention capacitor 2, a main control section 4 equipped with a triax for controlling the electric blower 3, its trigger circuit, etc.
Photodetector 5 using photodiode etc. and LED
The vacuum cleaner main body 8 includes a remote control control section 7 that controls the main control section 4 and includes a light emitting device 6 such as a light emitter 6. and sends an optical signal from the optical path switch 11 to the remote control control unit 7 in the vacuum cleaner main body 8 via the hose 9 which has a built-in transmission optical path by an optical fiber 12, etc. 11 turns on the electric blower 3 when the optical fiber 12 closes the optical path.
The remote control operation part 13 is connected to the hose proximal part 1.
0.

That is, the optical path switch 11 transmits the optical signal sent from the light emitter 6 to the photodetector 5 via the optical fiber 12.
When the photodetector 11 is turned off, the remote controller control section 7 drives the main control section 4 to turn on the electric blower 3. On the other hand, when the optical path is not blocked by the optical path switch 11, the output of the photodetector 11 is turned on, and the remote controller controller 7 controls the electric blower 3 to turn off via the main controller 4. do.

The structure for achieving the above-mentioned function will be explained with reference to FIGS. 5 to 7. First, as shown in FIG. 5, the dust case 14 of the vacuum cleaner main body 8 is formed with a hose insertion port 16 equipped with a seal packing 15 and the like. A hose 9 reinforced with piano wire 17 can be attached to and detached from the hose insertion port 16 through a connecting tube 19 with a hose cover 18 provided at one end thereof. For this reason, the connecting pipe 19 has a lock claw 2 that is urged upward by a spring 20 and that locks into the locking portion 21 of the dust case 14.
2 is attached, and a lock release button 23 is also provided. Further, as shown in FIG. 6, a connecting pipe (hose proximal part) 10 with a hose cover 24 is provided on the distal end side of the hose 9.
The grip tube 25 will be connected to 0.

Therefore, the optical fiber 12 is divided into a plurality of parts, and first, in the vacuum cleaner main body 8, the optical fiber 12a from the light emitter 6 and the optical fiber 12b to the photodetector 11 are connected to the hose of the dust case 14. It is arranged up to the vicinity of the opening 16. Therefore,
One ends of these optical fibers 12a and 12b are a light output section 12a ₁ and a light input section 12b ₁ . On the other hand, two optical fibers 12c and 12d are also arranged in a helical manner within the hose 9 including the connecting pipes 19 and 10. These optical fibers 1
2c, 12d also have one end as a light input part 12c and a light output part _12d1 , and when the hose 9 is connected to the hose insertion port 16, the optical fibers 12a, 12
The optical signal connection section 26 is configured to face and be optically connected to the optical output section 12a ₁ and the optical input section 12b ₁ of b. Moreover, these optical fibers 12c,
The other end of 12d is connected to connecting pipe 1 as shown in FIG.
Opposed at the remote control operation section 13 provided at 0,
A light output section 12c ₂ and a light input section 12d ₂ are provided.
The remote control operation unit 13 has a switch cover 27, and a shielding plate 29 with a knob 28 constituting the optical path switch 11 has a click spring 30.
and a click groove 31 so as to be able to slide in a click-like manner. Therefore, the shielding plate 29 opens and closes the optical path by moving forward and backward between the light output section 12c ₂ and the light input section 12d ₂ .

Problems to be Solved by the Invention In such a conventional system, when the hose 9 is not connected to the hose insertion port 16, the electric blower 3 is not reliably stopped. In other words,
There is a problem that external light enters the light input section _12b1 of the exposed optical fiber 12b or is blocked in a dark place, resulting in an unstable state, which may cause the control section of the main body to malfunction.

An object of the present invention is to provide a vacuum cleaner that can reliably prevent malfunction and stop an electric blower when a hose is not connected to a hose insertion port.

Means for Solving the Problems In order to solve the above problems, the present invention includes an electric blower 3, a main control section 4 for controlling the electric blower 3, a photodetector 5, and a light emitter 6. A remote control control section 7 for controlling the main control section 4 is provided in the vacuum cleaner main body 8, and an optical path switch 11 for cutting off the optical path is provided at the hose proximal section 10 via the hose 9. An optical signal is sent to the remote control control unit 7 in the vacuum cleaner body 8 through the hose 9 which has a built-in transmission optical path through the optical fiber 12, etc., and when the optical path switch 11 closes the optical path through the optical fiber 12, the electric signal is activated. Based on the basic structure of having a remote control operation part 13 for turning on the blower 3 in the hose proximal part 10, a changeover switch is connected to the power supply line of the remote control control part 7 or the main control part 4 and opens and closes by attaching and detaching the hose 9. 32 is adopted.

Function The changeover switch 32 opens and closes by attaching and detaching the hose 9, so the hose 9 is connected to the hose insertion port 16.
When the electric blower 3 is not plugged in, the changeover switch 32 opens the power line of the remote controller 7 or the main controller 4, puts the remote controller 7 or the main controller 4 in an inoperable state, and turns the electric blower 3 off.
This is to reliably prevent malfunctions when the hose 9 is not inserted into the hose insertion port 16.

Embodiment An embodiment of the present invention will be described based on FIGS. 1 and 2. Components that are the same as those shown in FIGS. 4 to 7 are designated by the same reference numerals, and description thereof will be omitted. In this embodiment, a detection rod 33 is provided in the vicinity of the hose insertion port 16, which moves up and down in accordance with the attachment and detachment of the hose 9, and a changeover switch 32 that is switched by the detection rod 33 is provided. This switch 32 is connected to the power supply line of the remote controller 7, and closes when the hose 9 is connected to the hose insertion port 16 and the detection rod 33 is raised.
When the hose 9 is not connected to the hose insertion port 16 and the detection rod 33 is lowered, the power supply line is opened.

In such a configuration, first, when the hose 9 is connected to the hose insertion port 16, the detection rod 33 is raised by the lock claw 22 and the changeover switch 32 is closed, so that the control is performed in the same way as in the case of FIG. be done. When the hose 9 is not connected to the hose insertion port 16, the detection rod 33 becomes free and lowers, and the changeover switch 32 opens.
As a result, the power supply line of the remote control control section 7 is opened, and the remote control control section 7 becomes inoperative. Therefore, the main control unit 4 controls the electric blower 3 to stop. In this way, with a simple circuit configuration, when the hose 9 is not connected to the hose insertion port 16, the electric blower 3 is reliably maintained in a stopped state, and does not malfunction due to external light, external induction, etc. .

Next, a second embodiment of the present invention will be described with reference to FIG. In this embodiment, a changeover switch 32 is connected to the power supply line of the main control unit 4, and when the hose 9 is connected to the hose insertion port 16 and the detection rod 33 is raised, it closes and the hose 9 is closed. When the detection rod 33 is lowered and not connected to the hose insertion port 16, the power line of the main control section 4 is opened.

This embodiment also has the same effect as the previous embodiment, but in particular, according to this embodiment, in order to cut off the power line of the main control unit 4 that drives the electric blower 3, The blower 3 can be turned off reliably, reducing circuit instability.
For example, when driven by a bidirectional thyristor,
If the gate circuit is turned off, the drive current can also be increased and turned off reliably.

Effects of the Invention As described above, the present invention is provided with a changeover switch that is connected to the power line of the remote controller or main control unit and opens and closes by attaching and detaching the hose, and when the hose is not inserted into the hose outlet. Sometimes, the power supply line of the remote controller or main controller is opened using this changeover switch to control the electric blower to stop, so with a simple circuit configuration, the electric blower can be turned on when no hose is connected to the hose outlet. The blower can be reliably maintained in a stopped state and can be prevented from malfunctioning due to external light, external guidance, etc.

[Brief explanation of drawings]

FIG. 1 is a block circuit diagram showing a first embodiment of the present invention, FIG. 2 is a longitudinal sectional side view showing the structure, and FIG. 3 is a block circuit diagram showing a second embodiment of the invention.
FIG. 4 is a block circuit diagram showing a conventional example, FIGS. 5 and 6 are longitudinal sectional views showing the structure, and FIG. 7 is a plan view showing a part thereof. 3...Electric blower, 4...Main control unit, 5...Photodetector, 6...Light emitter, 7...Remote control unit,
8... Vacuum cleaner body, 9... Hose, 10... Hose proximal portion, 11... Optical path switch, 12... Optical fiber (transmission optical path), 13... Remote control operation unit,
16... Hose insertion port, 26... Optical signal connection part,
32... Changeover switch.

Claims (1)

[Claims] 1 The vacuum cleaner body includes an electric blower, a main control section that controls the electric blower, and a remote control section that is equipped with a photodetector and a light emitter and controls the main control section, and an optical path is provided at the hose proximal portion. It has an optical path switch for shutting off, and an optical signal is sent from the optical path switch to a remote control control unit in the vacuum cleaner body via a hose containing a transmission optical path using an optical fiber or the like, and the optical path switch is closed. Turn on the electric blower when
In the vacuum cleaner, the vacuum cleaner body is provided with a hose insertion port for attaching and detaching the hose, and the hose insertion port is connected to an optical path switch and a transmission optical path on the hose side, and a photodetector and light emitting device on the vacuum cleaner body side. A switching switch is provided, which is connected to the power supply line of the remote control control unit or the main control unit and opens and closes by attaching and detaching the hose, and the hose is inserted into the hose insertion port. When there is not,
A vacuum cleaner characterized in that the electric blower is controlled to be stopped by opening a power line of the remote control control section or the main control section using the changeover switch.