JP2004081892A - Suction port for vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction port for a vacuum cleaner which has a high dust collection efficiency, assemblability, and usability. <P>SOLUTION: The suction port for the vacuum cleaner includes a rotator 43 and an agitating blade 47 longitudinally provided on the peripheral surface of the rotator 43 for scraping dust, and the rotator 43 is formed with a recessed groove 45 of inverted V-shape for holding the agitating blade 47. When dust on a floor surface is scraped by the agitating blade 47, the dust undergoes a resilient action toward the center of a suction hole, and the dust is collected extremely efficiently. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a suction device for a vacuum cleaner having an agitator.

Conventionally, this type of vacuum cleaner suction tool is generally disclosed, for example, in the following (for example, see Patent Document 1).

Hereinafter, a description will be given with reference to FIGS. The agitator 1 is formed by extrusion while a substantially cylindrical rotor 2 and an engaging groove 3 having a narrow opening 3a in the longitudinal direction of the outer peripheral surface of the substantially cylindrical rotor 2 are continuously spirally twisted. A stirring band 4 made of a flexible material such as rubber is attached to the engagement groove 3 having a narrow opening 3a. At the end of the agitator, a pulley 6 for transmitting power from the drive source 5 is formed.
JP-A-1-314526

However, in the agitator of the suction tool, since the stirring band formed of a flexible material is formed in a spiral shape, during carpet cleaning, particularly when solid heavy materials such as sand trash are scraped up into the stirring band, The reaction force causes the spiral to fly off in the traveling direction, and the dust is gathered at one end of the agitator.At the center of suction, it takes time to completely suck up the dust that has been lifted. Spent.

Further, the engaging groove 3 having a narrower opening 3a in the longitudinal direction of the outer periphery of the rotor is formed continuously by helical extrusion molding. However, dimensional defects in the opening 3a are likely to occur at the time of molding. 3a spends time processing the narrow engagement groove 3. Furthermore, since a plurality of stirring bands are attached to the rotor in the longitudinal direction of the continuously extruded rotor, it is necessary to divide the rotor into equal parts, and a lot of time is required. There was a problem that cost was high.

Furthermore, when cleaning on a carpet, a large load will be applied to the agitator, and a load from the carpet that is opposite to the force in the transmitting direction will be applied to the pulley that transmits rotation from the drive source. Become. Therefore, it has been required to secure and fix the rotor and the pulley.

Furthermore, the agitator rotates at a high speed, and the vibration during rotation is transmitted to the handle during cleaning, which causes discomfort and has a problem of reducing the vibration value.

The object of the present invention is to solve the above-mentioned problems, and to provide a suction device for a vacuum cleaner which has good dust collection efficiency and assemblability, and is easy to use.

Means for Solving the Problems To achieve the above object, the present invention provides a rotor, and a stirrer provided in a longitudinal direction of the circumferential surface of the rotor for scraping dust, and a groove for holding the stirrer in the rotor. Is formed in a V-shape, and when the dust on the floor surface is swept up by the agitation zone, an action of repelling the dust toward the center direction of the suction opening works. Efficient dust collection work can be performed.

According to the present invention, it is possible to provide a suction device for a vacuum cleaner which has good dust collection efficiency and assemblability and is easy to use.

The invention according to claim 1 of the present invention includes a rotor, and a stirring band provided in a longitudinal direction of a peripheral surface of the rotor for scraping dust, and a groove for holding the stirring band on the rotor. Is a suction tool for a vacuum cleaner that is shaped like a letter V. When the agitation band comes in contact with the surface to be cleaned, it fits well on the same surface, and the surface is squeezed, and the dust is efficiently removed from the surface to be cleaned. The dust is well separated, and the loose dust is effectively sucked into the suction tool main body by the restoring force of the stirring band and the suction force of the vacuum cleaner. Furthermore, since the concave groove for holding the stirring band is formed in the shape of an ellipse in the longitudinal direction of the circumferential surface of the rotor, when dust on the floor surface is swept up by the stirring band, the dust flows toward the center of the suction port. The action that is soon repelled works, and extremely efficient dust collection work can be performed.

The invention according to claim 2 of the present invention is such that when the mold is separated outward at the mating surface of the mold, the concave groove is formed in a cross-sectional shape that can be separated without resistance, so that a pair of molds can be used. The groove can be integrally formed, and without dividing the mold structure into a particularly complicated structure, each split portion is integrally formed with a pair of molds to form a U-shaped groove on the rotor. Since the molding and the processing of the concave groove can be performed in one shot, the assembling work can be performed after the molding and the time can be reduced.

(Embodiment 1)
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The suction tool main body 20 is obtained by connecting an upper main body member 22 and a lower main body member 23 via a bumper 21, and has a suction port 24 having an open lower surface in the front inside. The center of the suction port 24 extends to the rear of the suction tool body 20 and is connected to the suction passage 25.

In addition, a room partitioned left and right by the suction passage 25 is set inside the suction port 24, and a drive motor 27 for driving an agitator 34 is provided in one room 26, and a room 28 is provided in the other room 28. Is provided with a control circuit 29 for controlling the drive motor 27.

Reference numeral 30 denotes a substantially semi-cylindrical suction joint which is connected to the suction passage 25 so as to be able to raise and lower. A connection pipe 33 is rotatable via a ring 32 to a cylindrical connection port 31 protruding from a part of the peripheral wall. An extension pipe (not shown) connected to the suction side of the vacuum cleaner via a hose is detachably connected to the connection pipe 33.

Reference numeral 34 denotes an agitator provided in parallel in the suction port 24, reference numeral 35 denotes a bearing right of the agitator 34 provided on both side walls of the suction chamber, and reference numeral 36 denotes a bearing left.

A belt 39 is stretched between a pulley 37 provided on one side of the agitator 34 and a small pulley 38 provided on the shaft of the drive motor 27. That is, the agitator 34 is forcibly driven by the drive motor 27.

# 40 is a hook pipe provided at the other end of the agitator 34. Reference numerals 41 and 42 denote a pair of wheels provided at the front and rear of the suction tool main body so that the suction ports are positioned at a fixed distance from the surface to be cleaned.

The agitator 34 is formed by a rotor 43 and a groove 45 extending in the longitudinal direction of the outer peripheral surface of the rotor 43 and having a substantially rectangular shape.

When the rotor 45 divides the rotor 43 into a plurality of portions in the longitudinal direction, the groove 45 formed on one division surface separates a portion outside the peripheral surface at a plane passing through the center of the rotor 43. Sometimes, it is formed in a cross-sectional shape that can be separated without resistance.

Further, a description will be given of a mold structure in the case of manufacturing the concave groove 45 by resin molding. In FIGS. 1B to 1H, the rotor 43 is divided into substantially the same dimensions, When the block B and the block C are divided into three, in the blocks A and C, the upper and lower surfaces passing through the center of the rotor 43 are molds as shown by the cross sections DD, EE, and FF. The groove 45 is configured to be able to be separated without resistance when it is separated to the left and right outward at the mating surface, that is, the parting line (P · L).

As for the block B, as shown by the cross section AA, the cross section BB, and the cross section CC, the right and left surfaces passing through the center of the rotor 43 are the mating surfaces of the mold, that is, the parting lines (P · L). The groove 45 is configured to be able to be separated without resistance when it is vertically separated outward.

As described later, # 46 is a holding portion into which a fixing portion 49 integrally formed with the pulley 37 and the suction pipe 40 is inserted and fitted.

No. 47 is a stirring band made of a flexible material for scraping up dust, which is arranged on the outer periphery of a cylindrical sleeve 48 in a plurality of equally divided parts and integrally formed. A convex rib 48 </ b> A is formed on the inner peripheral surface of the cylindrical sleeve 48. The convex rib 48 </ b> A is fitted into the concave groove 45 formed in the rotor 43, and the stirring band 47 is inserted by inserting the sleeve 48 into the rotor 43. Is formed in the shape of a letter F.

固定 The pulley 37 is integrally formed with a fixing portion 49 which is inserted and fitted into a holding portion 46 formed at an end of the rotor 43 and regulates rotation in the radial direction. Further, a fixing portion 49 is integrally formed on the other end of the rotor 43 with the fitting pipe 40 inserted and fitted.

Furthermore, a plurality of adjustment holes 50 for adjusting the amount of unbalance of the agitator 34 are provided at the outer end of the pipe 40.

数 Several adjustment pins 51 are driven into the adjustment hole 50 as a mass for canceling the unbalance amount. Numeral 52 denotes a rod integrally formed with the pulley 37 and the suction pipe 40. The rod 52 is press-fitted to both ends of the rotor 43 to allow the agitator 34 to rotate freely.

Next, the operation and operation of this embodiment will be described.

First, when the agitator 34 is rotating in the counterclockwise direction as shown in FIG. 4, when the agitation zone 47 comes into contact with the surface to be cleaned, the agitation zone 47 fits well on the surface to be cleaned, so that the surface is strongly affected. As a result, dust is released from the surface to be cleaned, and the released dust is effectively sucked into the suction tool body 20 by the restoring force of the stirring band 47 and the suction force of the vacuum cleaner. In particular, since the stirring band 47 is formed in a U-shape with a bending point near the suction port 24, when dust is swept up by the stirring band 47, the dust is swept in the direction of the suction port 24 as shown by an arrow in FIG. The effect of being repelled is generated, and extremely efficient dust collection work can be performed.

Further, since the stirring zone 47 is formed integrally with the sleeve portion 48 and is formed as a single component, the stirring zone 47 is inserted into the rotor 43 over the outer peripheral surface of the rotor 43 and is easily inserted. Assembly is completed by work.

固定 Furthermore, simultaneously with the operation of press-fitting the pulley 37 into the end of the rotor 43, the fixing portion 49 provided on the pulley 37 is automatically inserted and fitted into the holding portion 46 formed on the rotor 43. Since the fixing portion 49 and the holding portion 46 are formed integrally with the respective components, very strong holding and fixing can be performed against a load in the radial direction.

Furthermore, since an unbalance adjustment hole is provided at the end of the jig pipe 40 or the pulley 37, even if an imbalance occurs, the adjustment pin 51 can be inserted to adjust the amount of unbalance, and the mass of the adjustment pin 51 becomes unbalanced. A high-quality agitator 34 with extremely small imbalance is obtained by the action of canceling the amount.

INDUSTRIAL APPLICABILITY As described above, the vacuum cleaner suction tool according to the present invention has good dust collection efficiency, good assemblability, and is easy to use. It is widely useful for vacuum cleaners in general.

(A) A perspective view of a rotor of a suction device for a vacuum cleaner showing an embodiment of the present invention (b) A side view of the rotor (c) A-A cross-sectional view of FIG. (B) of FIG. 6 (b), (e) of FIG. 6 (b), of CC, (f) of FIG. 6 (b), of FIG. E sectional view (h) FF sectional view of the same figure (b) Exploded perspective view of the agitator of the suction tool Top view of the suction tool with the upper body removed and viewed from above Sectional view of the suction tool body Top view of the suction tool body viewed from below Top view of a conventional vacuum cleaner suction tool with its upper body removed and viewed from above Sectional view of the suction tool Partial sectional view of the agitator of the suction tool

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 20 Suction tool main body 34 Agitator 37 Pulley 40 Dirt pipe 43 Rotor 45 Depressed groove 46 Holding part 47 Stirring band 49 Fixed part 50 Adjustment hole 52 Adjusting hole 52

Claims (2)

An electric device comprising: a rotor; and a stir zone for removing dust, which is provided in a longitudinal direction of a circumferential surface of the rotor, wherein a groove for holding the stir zone is formed in the rotor in a U shape. Vacuum cleaner suction tool. When the mold is separated outward at the mating surface of the mold, the groove is formed in a cross-sectional shape that can be separated without resistance, so that the groove can be integrally formed by a pair of molds. The suction tool for a vacuum cleaner according to claim 1.

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