JP4601419B2 - Suction nozzle for wet vacuum cleaner - Google Patents

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.
After the dirt on the object to be cleaned is sucked, dust or the like from the object to be cleaned tends to adhere to the suction nozzle, the injection nozzle or the injection port. In Patent Document 1 below, the structure of the suction nozzle is not particularly mentioned, but a suction nozzle having a configuration that can easily remove dust and the like has been desired.

JP 2001-299903 A

By the way, as described above, in the conventional wet type vacuum cleaner, when the suction nozzle inner wall surface, the injection nozzle injection port, and the shielding plate are provided, the surface of the shielding plate facing the injection nozzle or the shielding is provided. The suction nozzle structure makes it difficult to remove dust or the like (hereinafter referred to as “adhered matter”) adhering to a portion between the plate and the injection nozzle.
The injection nozzle can be sprayed (sprayed) in the form of a mist by spraying various nozzle tips at the injection port, or the cleaning liquid can be jetted in a straight line. It was difficult to replace the nozzle tip because of the structural factors.

  Accordingly, an object of the present invention is to provide a wet-type vacuum cleaner that can easily remove deposits such as the injection port of the injection nozzle and the inner wall surface of the injection nozzle and can easily replace the nozzle tip of the injection nozzle in the suction nozzle having the injection nozzle. It is to provide a suction nozzle for use.

  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 an object to be cleaned, and sucks dirt on the object to be cleaned together with moisture and air. The hose-side rear part and the front-end front part are divided so that the rear end fitting part of the front part and the front end fitting part of the rear part are fitted. The above object is achieved by providing a suction nozzle for a wet type vacuum cleaner that is divided into the front part and the rear part in the vicinity of the injection port. The rear part on the suction hose side is directly connected to the suction hose, but the front part on the tip side is not directly connected to the suction hose, but is connected via the rear part.

  According to the suction nozzle for a wet type vacuum cleaner of the present invention, it is easy to remove deposits such as the spray nozzle and the inner wall surface of the suction nozzle, and the nozzle tip of the spray nozzle can be easily replaced. For this reason, the suction nozzle of the present invention is particularly preferably used when cleaning objects to be cleaned such as hair, cotton dust, etc., such as carpets.

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.
The suction nozzle 11 of this embodiment is a suction nozzle that is connected to the suction hose 12 and sucks dirt and moisture together with air. 1 and 2, the suction nozzle 11, the suction hose 12 that conducts the mixed flow A of dirt, moisture, and air sucked from the suction nozzle 11, and the suction hose 12 are introduced. A steam separator 13 for separating dirt and moisture from the mixed flow A, and an electric fan 15 having an output of 1.5 kW or less for sucking and exhausting air C ′ from which the dirt and moisture are substantially separated from the mixed flow A. And a sewage tank 14 for storing dirt and water separated from the mixed flow A, and a suction nozzle used in a wet type vacuum cleaner used for cleaning a building structure such as a floor.

  As shown in FIGS. 2 to 7, the suction nozzle 11 of the present embodiment includes an injection nozzle 51 that is connected to the suction hose 12 and injects the cleaning liquid W therein, and further includes a tip portion of the suction nozzle 11. A shielding plate 56 that shields the cleaning liquid W sprayed from the spray nozzle 51 is provided between 61 and the spray nozzle 51 </ b> A of the spray nozzle 51. The dirt of the object to be cleaned is sucked together with moisture and air while spraying the cleaning liquid W from the spray nozzle 51 onto the object to be cleaned. The shielding plate 56 moves the suction nozzle 11 to a predetermined position only while the suction nozzle 11 is in a negative pressure state while the suction nozzle 11 is in contact with an object to be cleaned while the electric fan 15 is operating. In the meantime, the cleaning liquid W sprayed from the spray nozzle 51 can reach the object to be cleaned. Further, the shielding plate 56 moves upward by the action of the coil spring 74 when the suction nozzle 11 is not in contact with the object to be cleaned, and the cleaning liquid W sprayed from the spray nozzle 51 is sucked into the suction nozzle 11. The cleaning liquid W is blocked so as not to scatter from the outside to the outside, and the suction nozzle of the present invention is preferably provided with the shielding plate.

The suction nozzle 11 of this embodiment will be described in detail.
As shown in FIGS. 3 to 5, the suction nozzle 11 is a hollow body having a divergent shape in plan view. The tip 61 opens and serves as a contact surface with the object to be cleaned. The rear end portion is also opened to form a joint portion (hose joint portion) 68 with the suction hose 12.

As shown in FIG. 4, the suction nozzle 11 is divided into a front part 11 </ b> A and a rear part 11 </ b> B in the vicinity of the injection port 51 </ b> A of the injection nozzle 51. The shielding plate 56 is provided in the front portion 11A. As shown in FIG. 7, a piston 72 connected to the shielding plate 56 and a guide convex body 75 for guiding the piston 72 are provided on the upper surface of the front portion 11A. .
As shown in FIGS. 3 to 5, the front end portion 61 of the front portion 11 </ b> A is provided with a soft member 62 over substantially 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 (this improves the suction effect and prevents the cleaning liquid from scattering) and prevents damage to the object to be cleaned during cleaning. If it is a soft material, there is no restriction | limiting in particular in the material. In this embodiment, a rubber sheet is used.

As shown in FIG. 4, the end of the front part 11A on the rear part 11B side is a rear end fitting part 64 that fits to the inner peripheral surface of a front end fitting part 66 (described later) of the rear part 11B. A female screw portion 65 is provided around the periphery. As shown in FIG. 6, a shaft through hole 77 is formed on the upper surface of the front main body 63.
Between the front-end | tip part 61 and the rear-end fitting part 64 of 11 A of front parts is the front main body 63, and the injection port 51A of the injection nozzle 51 is located in the inside as shown in FIG.
As shown in FIGS. 6 and 7, a shielding plate 56 is provided between the front end portion 61 of the front body 63 and the injection port 51A of the injection nozzle 51 in the vicinity of the injection port 51A. As shown in FIGS. 6 and 7, a conduction hole 56A is formed.

  As shown in FIG. 6, the shielding plate 56 is a crank-shaped member, and a conduction hole 56 </ b> A is provided in an upper portion of a surface (a flat plate shape) facing the injection nozzle 51. One end of the shielding plate 56 is rod-shaped and penetrates the upper wall surface of the front portion 11A of the suction nozzle 11. A coil spring 74 is provided in the penetrating portion, and a piston 72 having a concave portion abuts on the head of the penetrating portion, and the piston 72 is accommodated in a guide convex body 75 serving as a piston guide. When the electric fan 15 is not in operation, the positional relationship between the injection nozzle 51 and the shielding plate 56 is such that the injection port 51A is blocked by the plate-like lower portion of the shielding plate 56, as shown in FIG. . When the suction nozzle 11 is brought into contact with an object to be cleaned while the electric fan 15 is in operation, the suction nozzle 11 is in a negative pressure state, and during that time, the shielding plate 56 is pulled downward and the injection port 51A and the shielding plate 56 The conductive holes 56A overlap each other, and the cleaning liquid W ejected from the ejection port 51A reaches the object to be cleaned through the conductive holes 56A. Even when the electric fan 15 is in operation, the negative pressure in the suction nozzle 11 is released and becomes normal pressure when the suction nozzle 11 is not in contact with the object to be cleaned. Thus, the shielding plate 56 is pulled upward, and the spray nozzle 51A and the shielding plate 56 are again in the positional relationship shown in FIG. Therefore, even when the electric fan 15 is in operation and the cleaning liquid W is sprayed from the injection port 51A, when the suction nozzle 11 is not in contact with the object to be cleaned, the cleaning liquid is blocked by the shielding plate 56. There is no scattering from the suction nozzle 11 to the outside.

As shown in FIGS. 4 and 6, the front end portion of the rear portion 11 </ b> B of the suction nozzle 11 is joined to the front portion 11 </ b> A of the suction nozzle 11 by the front end fitting portion 66. A plurality of screw through holes 71 are formed in the joint portion 66 so as to be spaced apart from each other in the circumferential direction so as to be aligned with the female screw portion 65 of the front portion 11A.
Further, the rear end portion of the rear portion 11 </ b> B is joined to the end portion of the suction hose 12 by the hose joint portion 68.
Below the rear portion 11 </ b> B, a tube joint portion 69 that is a joint portion with the liquid feeding tube 52 is disposed.
In addition, a bent conduit 70 that communicates the tube joint portion 69 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 formed by fitting the rear end fitting part 64 and the front end fitting part 66 and the male screw S to the female screw part 65 via the screw through hole 71. The suction nozzle 11 is configured by being connected by screwing.

  In the present invention, “divided into a front part and a rear part in the vicinity of the injection port of the injection nozzle” means that the injection port of the injection nozzle substantially coincides with the divided surface of the front part and the rear part of the suction nozzle. As shown in FIGS. 4, 10 and 11, when the injection port of the injection nozzle protrudes forward from the split surface, the embodiment shown in FIGS. This includes the case where the injection port of the injection nozzle is retracted from the dividing surface (vertical division surface closest to the front portion) within a range that does not hinder the cleaning of the injection port and the replacement of the nozzle tip of the injection port.

Next, one form of the wet vacuum cleaner 1 in which the suction nozzle 11 of the present embodiment is used will be described.
As shown in FIGS. 1 and 2, the suction hose 12 is a hose that communicates the suction nozzle 11 and the steam separator 13 via the sewage tank 14, and the dirt sucked from the suction nozzle 11; The mixed flow A of moisture and air is conducted.
As shown in FIGS. 2, 3 and 6, one end 12A of the suction hose 12 is joined to the hose joint 68 of the rear part 11B and communicates with the inside of the suction nozzle 11, and the other end 12B. Is fitted inside the introduction cylinder 31 at the upper peripheral surface of the sewage tank 14.
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 steam separator 13 separates dirt and moisture (sewage B) from the mixed stream A introduced from the suction hose 12.

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

  The sewage tank 14 is a tank for storing dirt and moisture (sewage B) separated from the mixed flow A, and in the wet vacuum cleaner 1 of this embodiment, has a cylindrical shape with an upper opening. As shown in FIGS. 1 and 2, the sewage tank 14 is disposed immediately below the steam / water separator 13, and the steam / water separator 13 is connected to the bottom of the steam / water separator 13 through the communication hole 13 </ b> B. It communicates with the inside.

  Between the discharge part 38 of the steam separator 13 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 dirt and moisture are substantially separated is provided.

In the suction nozzle 11 of the present embodiment, the injection nozzle 51 is connected to the liquid supply tube 52 via the bent conduit 70 and the tube joint portion 69, and the liquid supply tube is supplied from the injection port 51 </ b> A of the injection nozzle 51. The cleaning liquid W fed from 52 can be sprayed toward the object to be cleaned.
As the injection nozzle 51, by changing the nozzle tip, it is possible to use one that sprays (sprays) in the form of a mist or sprays the cleaning liquid in a straight line according to the object to be cleaned. In this embodiment, what is sprayed in a mist form is used.

  Further, in the suction nozzle 11 of the present embodiment, even if the cleaning liquid is sprayed from the spray nozzle 51 during the operation of the electric fan, if the suction nozzle 11 is not in contact with the object to be cleaned for the above-described reason, it is shielded. The plate 56 is pulled upward, and the lower plate-like portion of the shielding plate 56 is positioned in front of the injection port 51 </ b> A of the injection nozzle 51. Therefore, the cleaning liquid ejected from the ejection nozzle 51 hits the shielding plate 56 and does not scatter to the outside from the suction nozzle 11.

According to the suction nozzle 11 of this embodiment, since it is divided into the front part 11A and the rear part 11B in the vicinity of the injection port 51A of the injection nozzle 51, the injection port 51A of the injection nozzle 51 and the injection nozzle of the shielding plate 56 The portions between the shielding plate 56 and the injection nozzle 51 on the surface on the 51 side and the inner peripheral surface of the suction nozzle 11 are exposed, and these portions can be easily cleaned and the nozzle tip set in the injection port 51A Exchange is also easy. Furthermore, it is easy to remove the nozzle tip and remove the foreign matter clogged in the injection nozzle 51 (mixed in the cleaning liquid).
The suction nozzle of the present invention has a form in which the front part can be replaced. Therefore, the front part of various shapes can be selected and joined to the rear part.

The suction nozzle of the present invention is not limited to the above-described embodiment, and can be appropriately changed as described below without departing from the gist of the present invention.
The division form of the front part and the rear part in the suction nozzle of the present invention is, for example, a figure other than the form divided by a plane orthogonal to the axial direction of the suction nozzle 11 as shown in FIGS. 8 to 11 can be used.

In the divided form shown in FIG. 8, the tip portion of the cylindrical rear main body 67 is cut by 180 degrees to newly form a stepped surface, and this surface becomes a divided surface with the front main body 63. In addition, when viewed from the side, the injection port 51A of the injection nozzle 51 is located slightly on the suction hose side from the end of the rear body 67 that has not been cut off, and the stepped surface that has been cut off and newly generated is formed. It is located in front of the vertical plane (see FIG. 8B).
In the suction nozzle 11 of the form shown in FIG. 8, a part of the injection nozzle 51 is surrounded by the peripheral surface of the rear part 11B even in the divided state. Correspondingly, the injection nozzle 51 is protected from external impacts, loads, etc., and has the same level of ease of cleaning and parts replacement as the suction nozzle 11 in the form shown in FIGS. Will improve.

In the divided form shown in FIG. 9, the tip end portion of the cylindrical rear main body 67 is cut off by about 90 degrees to newly form a step surface, and this surface becomes a divided surface with the front main body 63. The position of the injection nozzle 51 is the same as that of the injection nozzle shown in FIG. 8 (see FIG. 9B).
In the suction nozzle 11 of the form shown in FIG. 9, the ease of cleaning and replacement of the suction nozzle 11 is slightly reduced as compared to the suction nozzle 11 of the form shown in FIG. Will improve.

  In the suction nozzle of the present invention, as shown in FIG. 10, the divided surface of the suction nozzle 11 can be linearly inclined with respect to the central axis of the suction nozzle 11 in a side view, as shown in FIG. 11. As described above, it is also possible to form a gentle curve inclined with respect to the central axis of the suction nozzle 11.

The joining structure of the front portion and the rear portion of the suction nozzle is not limited to screwing as in the embodiment shown in FIG. For example, a male screw is formed on the peripheral surface of the joint portion in the front portion, a female screw is formed on the peripheral surface of the joint portion in the rear portion, and the front portion and the rear portion are formed by screwing the male screw and the female screw. Can also be joined.
The structure of the shielding plate in the suction nozzle and the mechanism for moving it are not limited to those of the above-described embodiment.
The number of spray nozzles is not limited to one and may be two or more. The spray angle of the spray nozzle may also be changed according to the shape of the object to be cleaned.

  The suction nozzle of the present invention is more suitable for washing objects having fine irregularities such as carpets than washing of smooth objects such as flooring, but in addition to that, tatami mats, flooring, window glass It can also be used to clean building structures such as. In addition to the building structure, it can also be used for cleaning car seats and sofas, for example.

FIG. 1 is a perspective view showing a wet type vacuum cleaner using 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. FIG. 3 is a perspective view showing a suction nozzle according to an embodiment of the present invention. FIG. 4 is a perspective view showing the suction nozzle according to one embodiment of the present invention in a divided state. FIG. 5 is a plan view showing a suction nozzle according to an embodiment of the present invention. 6 is a schematic diagram of an AA cross section shown in FIG. FIG. 7 is a schematic diagram of a BB cross section shown in FIG. FIG. 8 is a schematic perspective view showing another divided form of the suction nozzle of the present invention, where (a) is a perspective view and (b) is a side view. FIG. 9 is a schematic perspective view showing still another divided form of the suction nozzle of the present invention, in which (a) is a perspective view and (b) is a side view. FIG. 10 is a schematic perspective view showing still another divided form of the suction nozzle of the present invention, where (a) is a perspective view and (b) is a side view. FIG. 11 is a schematic perspective view showing still another divided form of the suction nozzle of the present invention, wherein (a) is a perspective view and (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wet vacuum cleaner 11 Suction nozzle 11A Front part 11B Rear part 12 Suction hose 13 Air-water separator 14 Sewage tank 15 Electric fan 15A Suction part 15B Exhaust part 16 Filter 31 Introduction cylinder 38 Discharge part 51 Injection nozzle 51A Injection port 52 Feed Liquid tube 56 Shielding plate 56A Conducting hole 61 Front end portion 62 Soft member 63 Front main body 64 Rear end fitting portion 65 Female screw portion 66 Front end fitting portion 67 Rear main body 68 Hose joint portion 69 Tube joint portion 70 Bend pipe 71 Screw penetration Hole 72 Piston 74 Coil spring 75 Guide convex body A Mixed flow B Wastewater C Air C ′ Air W that substantially separates dirt and moisture from the mixed flow

Claims (2)

A suction nozzle for a wet type vacuum cleaner, connected to a suction hose, for spraying a cleaning liquid from a spray nozzle onto an object to be cleaned, and sucking dirt on 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 rear end fitting part of the front part and the front end fitting part of the rear part are fitted,
The wet type vacuum cleaner in which the injection port of the said injection nozzle is arrange | positioned in the part substantially corresponded with the division surface of the said rear part and the said front part, or the vicinity of the said division surface and the reverse part from the said division surface Suction nozzle. Inside the front part, a shielding plate for blocking the cleaning liquid sprayed from the spray nozzle is provided,
The suction nozzle for a wet electric vacuum cleaner according to claim 1, wherein a piston connected to the shielding plate and a guide convex body for guiding the piston are provided on an upper surface of the front portion.

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