JP2006136489A - Suction nozzle for wet electric cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction nozzle for a wet electric cleaner having a jet nozzle within the same in which the shape of a distal end portion can be changed and a sufficient cleaning effect can be obtained even when the shape of the distal end portion is changed. <P>SOLUTION: In the suction nozzle for a wet electric cleaner connected to a suction hose jetting a cleaning liquid onto the substance to be cleaned from the jet nozzle 51 and sucking the stain of the substance to be cleaned along with water and air, the suction nozzle is separated to a rear side portion 11B of the suction hose side and a front side portion 11A of the front end portion 11C side, the fitting portion 72 of the rear side portion 11B is fitted into the inside of the rear end fitting portion 64 of the front side portion 11A, the jet nozzle 51 is arranged inside of the rear side portion 11B, and a circulation notched portion 74 for circulating the cleaning liquid is formed in the front end fitting portion 72 of the rear side portion 11B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a suction nozzle for a wet type vacuum cleaner that sucks dirt on an object to be cleaned together with moisture and air.

2. Description of the Related Art Conventionally, a wet type vacuum cleaner that sucks dirt on an object to be cleaned together with moisture and air while ejecting a cleaning liquid from the injection nozzle inside the suction nozzle to the object to be cleaned has been used mainly for business use.
Such a wet vacuum cleaner is provided with a shielding plate that shields the cleaning liquid sprayed from the spray nozzle between the tip of the suction nozzle and the spray nozzle of the spray nozzle, as in Patent Document 1 below. There is also. In such a wet type vacuum cleaner, when the suction nozzle is separated from the object to be cleaned, the cleaning liquid sprayed from the spray nozzle can be shielded by the shielding plate so that the cleaning liquid does not scatter from the suction nozzle.

JP 2001-299903 A

  By the way, in the wet type vacuum cleaner, it is desired to use a suction nozzle having a wide tip portion and a substantially cylindrical suction nozzle depending on the size and shape of the object to be cleaned. Document 1 does not mention devising the structure of the suction nozzle from such a viewpoint and providing a sufficient cleaning effect with any shape of the suction nozzle.

  Accordingly, an object of the present invention is to provide a wet-type vacuum cleaner that can change the shape of the tip portion in a suction nozzle having an injection nozzle therein, and can obtain a sufficient cleaning effect even when the shape of the tip portion is changed. It is to provide a suction nozzle for a machine.

  The present invention is a suction nozzle for a wet type vacuum cleaner that is connected to a suction hose, injects a cleaning liquid from an injection nozzle onto the object to be cleaned, and sucks dirt on the object to be cleaned together with moisture and air, the suction hose A rear part on the side and a front part on the tip part side, and a front end fitting part of the rear part is fitted inside the rear end fitting part of the front part, and the rear part By providing the suction nozzle for the wet vacuum cleaner in which the spray nozzle is disposed, and the front end fitting portion of the rear portion is provided with a flow notch for cleaning liquid flow, The above objective has been achieved.

  According to the suction nozzle for a wet type vacuum cleaner of the present invention, in the suction nozzle provided with the injection nozzle, the shape of the tip portion can be changed, and even when the shape of the tip portion is changed, a sufficient cleaning effect is obtained. Is obtained.

Hereinafter, a preferred embodiment of a suction nozzle for a wet electric vacuum cleaner (hereinafter simply referred to as “suction nozzle”) of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the suction nozzle 11 of the present embodiment sprays the cleaning liquid W from the spray nozzle 51 onto the object to be cleaned, and sucks dirt on the object to be cleaned together with moisture and air. Suction nozzle. Then, the suction nozzle 11 sucks the air C from the suction flow 11, the suction hose 12 that conducts the mixed flow A of dirt, moisture, and air sucked from the suction nozzle 11 and exhausts the air C from the mixed flow A. And an electric fan 15 having an output of 1.5 kW or less, and a sewage tank 14 for storing dirt and moisture (sewage B) separated from the mixed flow A from the suction hose 12, Used as a suction nozzle in a wet type vacuum cleaner used for cleaning.

The suction nozzle 11 according to the present embodiment will be described in more detail. The suction nozzle 11 is a hollow body having a divergent shape toward the distal end portion 11C as shown in FIG. The tip portion 11C is opened and serves as a contact surface with the object to be cleaned. The rear end portion is also opened and serves as a connecting portion (hose connecting portion 79) with the suction hose 12.
As shown in FIGS. 1 to 5, the suction nozzle 11 is divided into a front part 11 </ b> A on the front end part 11 </ b> C side and a rear part 11 </ b> B on the suction hose 12 side, and a cylindrical rear end fitting part 64 in the front part 11 </ b> A. The front part 11A and the rear part 11B are connected to each other by fitting a cylindrical front end fitting part 72 in the rear part 11B inside.

First, the front portion 11A will be described in detail.
As shown in FIG. 4, the front portion 11 </ b> A is a portion of the suction nozzle 11 on the tip end portion 11 </ b> C side, and has a wide front body 63 communicating with the rear end fitting portion 64, and the front main body 63 from the rear end fitting portion 64. A pair of hollow expanding portions 66 that expand toward the front end, and the entire shape thereof extends from the rear end fitting portion 64 toward the front end portion 61.

  As shown in FIGS. 3 and 4, the front end portion 61 of the front portion 11 </ b> A is provided with a soft member 62 over the entire circumference. The soft member 62 is a member that plays a role in preventing a gap between the tip 61 and the object to be cleaned during cleaning (this improves the suction effect and prevents the cleaning liquid from scattering) and prevents damage to the object to be cleaned. If it is a soft material, there will be no restriction | limiting in particular in the material. In this embodiment, a rubber sheet is used.

  As shown in FIGS. 3 and 4, the soft member 62 is provided with a ventilation slit 62 </ b> A that extends from the front end portion 61 toward the rear end fitting portion 64 as a ventilation mechanism. The ventilation slit 62 </ b> A secures ventilation through the ventilation slit 62 </ b> A and does not vent from the suction nozzle 11 even if the tip 61 and the object to be cleaned are in close contact with each other during cleaning. This is to prevent a load.

  As shown in FIGS. 3 and 4, a plurality of bundles of brushes 67 are provided on the inner side of the soft member 62 at predetermined intervals along the inner peripheral surface thereof. The brush 67 is a bundle formed of a plurality of hairs, and is used to scrape and remove dirt from the object to be cleaned.

  As shown in FIGS. 3 and 4, the front main body 63 is a cylindrical portion having a wide, substantially rectangular cross section, and a soft member 62 is provided on the front end portion 61 side, and the rear portion 11B side. Are provided with a rear end fitting portion 64 and a hollow expanding portion 66.

  As shown in FIGS. 3 and 4, the rear end fitting portion 64 is a cylindrical portion having a circular cross section provided on the rear portion 11B side of the front main body 63, and the front end fitting of the rear portion 11B is provided on the inner side thereof. The joint portion 72 is fitted.

  As shown in FIGS. 3 and 4, a pair of hollow expanding portions 66 and 66 are provided on both sides of the rear end fitting portion 64. The hollow expanding portion 66 has a substantially semicircular arc-shaped hollow cross section, and communicates with both sides of the rear end fitting portion 64 and a portion connected to the front main body 63. The pair of hollow expanding portions 66 are provided so as to be arranged at positions corresponding to a pair of flow notches 74 (described later) of the rear portion 11B in a fitted state between the front portion 11A and the rear portion 11B. Yes.

  As shown in FIGS. 3 and 4, a piston notch 65 is provided on the upper portion of the rear end fitting portion 64 of the front portion 11 </ b> A. The piston notch 65 has a concave semi-circular shape from the rear part 11 </ b> B toward the tip part 61 in plan view. As shown in FIG. 3, a cylindrical guide convex body 75 (described later) of the rear portion 11B is fitted into the piston notch portion 65 in a fitted state between the front portion 11A and the rear portion 11B. Yes.

Next, the rear part 11B will be described in detail.
As shown in FIGS. 1 and 3, the rear part 11 </ b> B is a part connected to the suction hose 12 in the suction nozzle 11. As shown in FIG. 5, the rear part 11 </ b> B is mainly configured by a rear main body 73 bent in a side view. As shown in FIGS. 3 and 5 to 7, the injection nozzle 51 is arranged inside the rear portion 11 </ b> B, and further, the front end portion 71 (end portion on the front portion 11 </ b> A side) of the rear portion 11 </ b> B and the injection nozzle 51. A shielding plate 53 is provided between the injection port 51A.
As shown in FIGS. 3, 5, and 7, the shielding plate 53 and the injection port 51 </ b> A of the injection nozzle 51 are arranged close to each other and at a position retracted from the front end portion 71 of the rear portion 11 </ b> B.

As shown in FIGS. 1 and 3, the injection nozzle 51 is connected to the liquid supply tube 52 via the bent conduit 54 and the tube connection portion 55, and injects the cleaning liquid supplied from the liquid supply tube 52. It can be sprayed from the mouth 51A toward the object to be cleaned.
The spray nozzle 51 can spray (spray) radially or spray the cleaning liquid in a straight line by exchanging the spray ports 51A. Usually, the injection port which injects radially is used, but when 11 A of front parts are the above-mentioned wide shape, the injection port which injects radially is especially preferable. The radiation angle is, for example, 90 ° to 150 °, preferably 110 ° to 130 °.
When the front portion 11A has a substantially cylindrical shape, which will be described later, an injection port that ejects linearly is also preferably used.

  As shown in FIGS. 3, 6 and 7, the shielding plate 53 is a crank-shaped member in a side view, and a conduction portion 53 </ b> A is provided at the center of the lower plate-like portion facing the injection nozzle 51. It has been. The other end of the shielding plate 53 is a rod-like portion 53B that passes through a shaft portion through hole 77 provided on the upper wall surface of the rear portion 11B. A coil spring 78 is provided around the rod-shaped portion 53B. The shielding plate 53 contacts the object to be cleaned while the electric fan 15 is operating, and moves to a predetermined position only while the inside of the suction nozzle 11 is in a negative pressure state. As will be described later, the cleaning liquid W sprayed from the spray nozzle 51 can reach the object to be cleaned. Further, the shielding plate 53 shields the cleaning liquid W sprayed from the spray nozzle 51 by the action of the coil spring 78 as will be described later when the suction nozzle 11 is separated from the object to be cleaned.

A piston 76 connected to the shielding plate 53 and a guide convex body 75 for guiding the piston 76 are provided on the upper portion of the front end fitting portion 72 of the rear portion 11B.
The piston 76 is connected to the head of the rod-shaped portion 53B of the shielding plate 53, and is accommodated in a guide convex body 75 that serves as a piston guide. The piston 76 is for forcibly moving the shielding plate 53 downward by pushing the piston 76 when the shielding plate 53 does not move downward due to a negative pressure or the like.

  As shown in FIG. 3 and FIGS. 5 to 7, a pair of flow notches 74 for flowing the cleaning liquid are provided on both sides of the front end fitting portion 72 of the rear portion 11 </ b> B. The pair of flow cutouts 74 are substantially semicircular in a concave shape toward the hose connection part 79 in a side view. The pair of flow notches 74 are provided to correspond to the pair of hollow expanded portions 66, and when the hollow expanded portions 66 are only one, the flow notched 74 is formed only on one side. May be. Considering the cleaning effect, it is usually preferable that the hollow expanding portions 66 be a pair, and accordingly, the flow notch portions 74 are also preferably a pair.

As shown in FIGS. 1 and 3, the hose connecting portion 79 of the rear portion 11 </ b> B is a portion that fits with the end portion of the suction hose 12.
As shown in FIGS. 5 to 7, a tube connection portion 55 that is a connection portion with the liquid feeding tube 52 is disposed below the rear portion 11 </ b> B. Further, a bent conduit 54 that communicates the tube connecting portion 55 and the injection nozzle 51 is provided so as to penetrate the lower outer periphery of the rear portion 11B.

As shown in FIG. 3, the front part 11 </ b> A and the rear part 11 </ b> B are connected by fitting the front end fitting part 72 to the rear end fitting part 64 to constitute the suction nozzle 11.
When the front part 11A and the rear part 11B are connected, as shown in FIG. 3, the guide convex body 75 that guides the piston 76 in the rear part 11B is an upper part of the rear end fitting part 64 of the front part 11A. The hollow portions of the pair of hollow expanding portions 66 in the front portion 11A are fitted to the piston cutout portions 65 formed in the front portion 11A, and a pair of flow notch portions 74 formed on both sides of the front end fitting portion 72 of the rear portion 11B. Are arranged corresponding to each.

The positional relationship between the spray nozzle 51 and the shielding plate 53 will be described.
When the electric fan 15 is not operating, as shown in FIGS. 6A and 7A, the lower plate-like portion of the shielding plate 53 is connected to the injection port 51 </ b> A by the action of the coil spring 78. In the opposite position.
When the electric fan 15 is operated and the suction nozzle 11 is brought into contact with the object to be cleaned, the inside of the suction nozzle 11 is in a negative pressure state, so that the shielding plate 53 is pulled downward, and FIG. 6 (b) and FIG. As shown in (b), the injection port 51A of the injection nozzle 51 and the conduction portion 53A of the shielding plate 53 are overlapped. Therefore, the cleaning liquid W ejected from the ejection port 51A reaches the object to be cleaned through the conduction portion 53A.

  On the other hand, if the operation switch of the electric fan 15 is turned off or the suction nozzle 11 is moved away from the surface to be cleaned even when the electric fan 15 is in operation, the negative pressure in the suction nozzle 11 is released to normal pressure. Therefore, the shielding plate 53 is pulled upward by the urging force of the coil spring 78, and the lower plate-like portion of the shielding plate 53 is again injected into the injection port as shown in FIGS. 6 (a) and 7 (a). Return to the position facing 51A. Therefore, even if the cleaning liquid W is sprayed, the cleaning liquid W will not be scattered from the suction nozzle 11 unless the suction nozzle 11 is brought into contact with the surface to be cleaned.

Next, one form of the wet vacuum cleaner 1 provided with the suction nozzle 11 of this embodiment is explained in full detail.
As shown in FIGS. 1 and 2, the suction hose 12 is a hose that connects the suction nozzle 11 and the sewage tank 14, and conducts a mixed flow A of dirt, moisture, and air sucked from the suction nozzle 11. To do.

As shown in FIGS. 1 to 3, one end portion 12 </ b> A of the suction hose 12 is fitted to the hose connecting portion 79 of the rear portion 11 </ b> B and communicates with the inside of the suction nozzle 11, and the other end portion 12 </ b> B is The sewage tank 14 is fitted in the inlet 14A at the upper side surface.
As the suction hose 12, a suction hose conventionally used for a wet vacuum cleaner can be used without particular limitation. For example, a bellows-like hose, a bellows-like outside and a smooth tubular hose inside, Examples thereof include a tubular hose. In the wet type vacuum cleaner 1 of the present embodiment, a hose having a bellows-like outer side and a smooth tubular inner side is used from the viewpoint of preventing sewage from adhering to the inner surface of the hose while ensuring ease of bending of the hose.

  The sewage tank 14 is a tank for storing dirt and moisture (sewage B) separated from the mixed flow A, and has a substantially cylindrical shape in the wet electric vacuum cleaner 1 of this embodiment. At the upper part of the sewage tank 14, a discharge part 14 </ b> B that discharges air C ′ that substantially separates the sewage B from the mixed flow A is provided.

Between the discharge part 14B of the sewage tank 14 and the suction part 15A of the electric fan 15, a filter 16 for further separating dirt and moisture from the air C 'from which the sewage B is substantially separated from the mixed flow A is provided.

  The electric fan 15 sucks the air C ′ from which the sewage B is substantially separated from the mixed flow A and discharges the air C from the exhaust part 15B. The electric fan having an output of 1.5 kW or less is a wet electric vacuum cleaner for home use. Although it is suitable for the machine, an electric fan of 1.2 kW or less or 1.0 kW or less can also be used depending on conditions such as an object to be cleaned.

  By the way, in the suction nozzle 11 of this embodiment, it is divided | segmented into the front part 11A by the side of the front-end | tip part 11C, and the rear part 11B by the side of the suction hose 12, and inside the cylindrical rear end fitting part 64 in 11 A of front parts. Since the front part 11A and the rear part 11B are connected by fitting the cylindrical front end fitting part 72 in the rear part 11B, by replacing the front part 11A with a different shape, The shape of the tip portion 11C can be changed.

The front portion 11A is not limited to a wide shape as shown in FIG. 4, and may be a substantially cylindrical shape as shown in FIG. 8, for example.
In the substantially cylindrical front portion 11A ′ shown in FIG. 8, the front main body 63 has a circular cross section. And the soft member 62 and the brush 67 are also arrange | positioned circularly corresponding to the shape of the front main body 63, and the hollow expansion part 66 in 11 A of wide shaped front parts is not provided. Other structures, shapes, and the like are the same as those of the wide-shaped front portion 11A, and corresponding portions are denoted by the same reference numerals.

  In the suction nozzle 11 of the present embodiment, a substantially cylindrical front portion 11A ′ as shown in FIG. 8 can be used in combination with the rear portion 11B. Such an embodiment is preferably used when a narrow space that cannot be reached by the wide front portion 11A as shown in FIG. 4 is washed, or when a narrow area is intensively washed.

  According to the suction nozzle 11 of the present embodiment, the injection nozzle 51, the shielding plate 53, and the piston 76, which are relatively complicated mechanisms, are provided in the rear part 11B, which is a part that is not replaced, and are replaced parts. Since there is no need to provide the front portion 11A, it is advantageous in terms of cost when several types of front portions 11A having different tip end shapes are used.

  Further, if the injection port 51A of the injection nozzle 51 is provided at a position far from the tip portion 11C of the suction nozzle 11, the cleaning liquid can be sprayed radially over a wide range, but the cleaning liquid is sucked before reaching the object to be cleaned. End up. Thus, according to the suction nozzle 11 of the present embodiment, the pair of flow notches 74 for flowing the cleaning liquid are provided on both sides of the front end fitting portion 72 of the rear portion 11B. Even if the injection port 51 </ b> A is provided close to the distal end portion 11 </ b> C of the suction nozzle 11, the cleaning liquid W injected from the injection nozzle 51 diffuses in the width direction via the pair of flow cutout portions 74. Therefore, when used in combination with the front portion 11A having a pair of hollow widening portions 66 that expand from the rear end fitting portion 64 toward the front end portion 61, the cleaning liquid flows through the flow notch portion 74 and the hollow widening portion. Through 66, the object to be cleaned reaches the object to be cleaned while expanding in the width direction from the tip 61 of the front portion 11A. Therefore, the object to be cleaned can be effectively cleaned over a wide width (area), and the work efficiency is excellent.

Further, for the substantially cylindrical front portion 11A ′ as shown in FIG. 8, it is preferable to use the injection port 51A for spraying the cleaning liquid linearly, considering only the cleaning power, but every time the front portion is replaced. In addition, it is complicated to replace the injection port 51A, and it is desired to cope without replacing the injection port 51A. Thus, according to the suction nozzle 11 of the present embodiment, since the injection port 51A of the injection nozzle 51 can be provided close to the tip end portion 11C of the suction nozzle 11, a substantially cylindrical front portion 11A ′ and a radial shape are provided. Even when used in combination with the injection port 51 </ b> A that injects the liquid, the majority of the cleaning liquid W directly reaches the object to be cleaned. Therefore, the detergency is not particularly reduced, and a sufficient detergency can be obtained.
Thus, according to the suction nozzle 11 of the present embodiment, a sufficient cleaning effect can be obtained when either the wide front part 11A or the substantially cylindrical front part 11A ′ is used.

The suction nozzle 11 of the present invention is not limited to the above-described embodiment, and can be appropriately changed as described below without departing from the spirit of the present invention.
In each of the above-described embodiments, the suction nozzle 11 is divided into two parts, the front part 11A and the rear part 11B. However, in the present invention, the suction nozzle 11 may be further divided. .
The structure of the shielding plate 53 in the suction nozzle 11 and the mechanism for moving it are not limited to those of the above-described embodiment.
The number of spray nozzles 51 is not limited to one and may be two or more. The spray angle of the spray nozzle 51 may also be changed according to the shape of the object to be cleaned.

The ventilation mechanism 62A is preferably provided at the distal end portion 11C of the suction nozzle 11 as in the above-described embodiment, but may be provided closer to the distal end portion 11C of the suction nozzle than the ejection port 51A of the ejection nozzle 51. The desired effect can be obtained. The ventilation mechanism 62A is not limited to the slit as in the above embodiment, and can be realized by providing a hole or using a wave-shaped member at the tip.
The suction nozzle 11 of the present invention is more suitable for cleaning objects to be cleaned with fine irregularities such as carpets than to clean objects to be cleaned such as flooring, but in addition to that, tatami mats, flooring, windows It can also be used to clean building structures such as glass. Moreover, it can also be used for washing | cleaning the seat of a car other than a building structure part, for example.

FIG. 1 is a perspective view of a wet type vacuum cleaner equipped with a suction nozzle according to an embodiment of the present invention, with its housing virtually seen through. FIG. 2 is a schematic view showing the whole of the wet type vacuum cleaner shown in FIG. 1 together with distribution channels such as dirt and moisture. 3A and 3B are perspective views showing a suction nozzle according to an embodiment of the present invention, in which FIG. 3A is a diagram showing a state in which a front portion and a rear portion are connected, and FIG. 3B is a diagram in which the front portion and the rear portion are divided. It is a figure which shows a state. 4A and 4B are diagrams showing a front portion of the suction nozzle according to the embodiment of the present invention, in which FIG. 4A is a perspective view, FIG. 4B is a plan view, and FIG. 4C is a front view. FIG. 5 is a side view showing a rear portion of the suction nozzle according to the embodiment of the present invention. FIG. 6 is a front view showing a rear portion of the suction nozzle according to the embodiment of the present invention, in which (a) shows a state in which the shielding plate is located above, and (b) shows a state in which the shielding plate is located below. FIG. 7A is a sectional view taken along the line VIIA-VIIA shown in FIG. 6A, and FIG. 7B is a sectional view taken along the line VIIB-VIIB shown in FIG. 6B. FIG. 8 is a view showing a front portion of another form of the suction nozzle of the present invention, in which (a) is a perspective view and (b) is a plan view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Suction nozzle 11A Front part 11B Back part 11C Tip part 12 Suction hose 14 Sewage tank 15 Electric fan 15B Exhaust part 16 Filter 51 Injection nozzle 51A Injection port 52 Liquid supply tube 53 Shielding plate 53A Conductive part 53B Rod-like part 54 Bend line 55 Tube connecting portion 61 Front end portion 62 Soft member 62A Ventilation mechanism 63 Front main body 64 Rear end fitting portion 65 Piston notch portion 66 Hollow expanding portion 67 Brush 71 Front end portion 72 Front end fitting portion 73 Rear main body 74 Flow notch portion 75 Guide convex Shaped body 76 Piston 77 Shaft through hole 78 Coil spring 79 Hose connecting part A Mixed flow B Sewage C Air C 'Air W in which sewage B is substantially separated from mixed flow A Cleaning fluid

Claims (3)

A suction nozzle for a wet type vacuum cleaner, connected to a suction hose, for spraying a cleaning liquid from a spray nozzle to the object to be cleaned and sucking dirt of the object to be cleaned together with moisture and air;
It is divided into a rear part on the suction hose side and a front part on the tip part side, and the front end fitting part of the rear part is fitted inside the rear end fitting part of the front part,
The spray nozzle is arranged inside the rear part,
A suction nozzle for a wet electric vacuum cleaner, wherein a flow notch for cleaning liquid flow is provided in the front end fitting portion of the rear portion. The front portion includes a wide-shaped front main body communicating with the rear end fitting portion and a pair of hollow widening portions extending from the rear end fitting portion toward the front main body. The part is provided in a pair on both sides of the front end fitting part of the rear part,
2. The pair of hollow widened portions are provided so as to be respectively disposed at positions corresponding to the flow notch portions of the rear portion under the fitted state of the front portion and the rear portion. Suction nozzle for wet vacuum cleaners. Inside the rear part, a shielding plate is provided between the front end part of the rear part and the injection port of the injection nozzle,
On the upper part of the front end fitting part of the rear part, a piston connected to the shielding plate and a guide convex body for guiding the piston are provided,
A piston notch is provided at an upper portion of the rear end fitting part of the front part, and the piston notch is provided in the rear part with the front part and the rear part in a fitted state. The suction nozzle for a wet electric vacuum cleaner according to claim 1 or 2, wherein the guide convex body is fitted.