Vacuum cleaner with air ejection device

Abstract

To provide a vacuum cleaner provided with an air injection device capable of effectively cleaning even the edges and corners of a room which cannot be cleaned by the vacuum cleaner.SOLUTION: Compressed air is sent from a fan chamber 15 for ejecting air through an exclusive pipe 17, a connecting pipe 6 and a hose 7 from the main body of the cleaner, and the compressed air is sent from the upper fan chamber of the suction port through the inside of the extension pipe to blow off the dust at the corner of the object to be cleaned which could not be sucked, and the dust is sucked from the opening portion for sucking the dust. Further, a switch 11 is attached to a rotating fin 8 at the upper tip of the opening part 1, and when the contact of the fin 8 with the wall surface is sensed, an electromagnetic clutch 13 attached to a jetting fan 3 for jetting air is connected, and the jetting fan 3 is moved, and compressed air is jetted from another separated opening part 2, and the dust at the corner part is surely sucked.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a vacuum cleaner that sucks up dust from hard-to-vacuum edges and corners created by walls, baseboards, cabinets, furniture, etc. [Background technology]

[0002] Conventional dust suction technology generally involves providing multiple grooves at the tip of the suction port, as shown in Figure 8, to suck up corners that the dust suction brush does not reach.

[0003] As a mechanical suction method, there is a method as disclosed in Patent Document 3 in which a rotating brush is used to sweep out dust from areas that the dust suction brush does not reach.

[0004] In addition, as in Patent Document 2, there is also a method in which a separate jet nozzle is provided inside the suction port and air is blown out to suck the material. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Mito 3239079 [Patent Document 2] WO-A1-2015 / 115477 [Patent Document 3] Patent Publication No. 2021-159764 Summary of the Invention [Problem to be solved by the invention]

[0006] The method of adding grooves to the tip of the suction port is inexpensive but has the disadvantage of weak suction power. Furthermore, the method of attaching a rotating brush to the tip requires the brush to rotate continuously even when suctioning areas other than the corners of the object being cleaned, resulting in rapid brush wear and the brush becoming bent or worn when it hits a corner. The present invention aims to provide a durable dust removal device that does not wear out the tip because it uses a method of blowing air to blow away dust. [Means for solving the problem]

[0007] An opening for blowing away dust is provided above the opening for suctioning dust, and when the rotating fin attached to the tip of the opening hits the corner of the object to be cleaned, the fin rotates and a switch attached inside the fin detects it and sends an electric signal. When the electromagnetic clutch of the fan that generates suction power and the fan that generates ejection power, which is coaxial with the fan that generates suction power, is turned on, the ejection fan operates, blowing away dust from the corners of the body of the vacuumed device through the opening for blowing away dust, and sucking up the dust through the suction port of the opening. [Effects of the Invention]

[0008] The invention of the main body makes it possible to capture dust from corners efficiently and reliably at low cost. [Brief explanation of the drawings]

[0009] [Figure 1] Overall view of the vacuum cleaner. [Figure 2] Overall view of the vacuum cleaner. [Figure 3] A diagram showing the fins and switch on the back side of the opening. [Figure 4] A view showing the fins and switches from the top of the opening. [Figure 5] Diagram showing electrical wires attached to a hose. [Figure 6] FIG. [Figure 7] Front view of the opening. [Figure 8] View of the opening from the back. [Figure 9] Schematic diagram of the suction and ejection mechanism. DETAILED DESCRIPTION OF THE INVENTION

[0010] The mechanisms of the opening for sucking in dust and the opening for blowing out air are explained in Figure 9. Fan 3 for blowing out dust and fan 4 for sucking in air are attached to the left and right sides of the rotating shaft of motor 12, and electromagnetic clutch 13 is attached to the fan for blowing out dust, and when fin 8 does not come into contact with the object to be vacuumed, the electromagnetic clutch does not operate and the motor only operates fan 4 for sucking in dust, but when fin 8 comes into contact with the object to be vacuumed, sensing switch 11 is activated, the electromagnetic clutch is turned on and the fan for blowing out air is operated, and compressed air is blown out through opening 2. The method 9 can also be used for the air ejection devices shown in Figures 1 and 2.

[0011] Hereinafter, an embodiment of the present invention will be described. As shown in Figures 6 and 7, an opening 2 for blowing away dust may be made by injection molding of plastic above the opening for sucking dust, or a jet pipe for blowing away dust may be made of soft resin or rubber above the opening 1 for sucking dust, and a guide for passing the jet pipe may be molded above the opening for sucking dust, and the dust may be passed through this.

[0012] As shown in Figure 5, when the rotating fin 8 hits the corner of the object to be cleaned, it drives a fan that sprays air. If the power cord for the switch is wired spirally to the outside of the hose 7 as shown in Figure 5 when the hose is formed, it will be strong against bending and can be wired safely and practically as an integral part of the hose.

[0013] As shown in Figure 6, the rotating fin passes through shaft 5 at the top, rotates around it, and when it hits the corner of the object to be cleaned, the angle of the fin changes, pressing the center switch 11, which electrically energizes the switch, turning on electromagnetic clutch 13 and rotating the fan that blows out air. Note that a proximity switch can be used instead of a sensor switch; this mechanism has the above-mentioned configuration and structure.

[0014] As shown in Figures 3 and 4, when the fin 8 comes into contact with the object to be cleaned, the sensing switch is pressed by the fin, and when the fin detects this and moves away from the corner of the object to be cleaned, the fin returns to its original position by the spring 16. [Explanation of symbols]

[0015] 1 Suction part 2. Dust blowing nozzle 3. Fan for blowing air 4 Fan for sucking dust 5 Rotation Axis 6 Connecting pipe 7 Hose 8 Rotating Fins 9 Fan chamber above the intake body 10. Suction pipe 11 Switch 12 motors 13 Electromagnetic clutch 14 coax 15 Fan chamber for blowing air 16 Spring 17 Spout Pipe

Claims

1. The vacuum cleaner is provided with a suction section 1 for sucking up dust, a jet section 2 for blowing away the dust, a suction chamber where suction force acts, a suction fan 4 having a function for sucking air, and an air jet device in which a jet fan 3 disposed in a jet chamber and generating a jetting force is coaxially provided.

2. A vacuum cleaner equipped with the air injection device of claim 1, wherein an ejection pipe is provided above the opening for absorbing dust.

3. When the rotating fin 8 provided at the tip of the opening hits the corner of the object to be cleaned, a movable contact switch attached to the tip of the opening detects it and an electromagnetic clutch attached to the injection blower is activated by an electric signal.

4. 2. A vacuum cleaner equipped with the air ejection device of claim 1, wherein an electromagnetic clutch is attached to the fan 3 for ejecting air, for rotating the fan 3 for ejecting air, which is provided coaxially.

5. A vacuum cleaner equipped with the air ejection device of claim 1, wherein a contact switch and an electric wire for a motor power supply are inscribed in the suction pipe and the ejection pipe as shown in FIG. 5.

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