JP5658302B2 - Cleaning nozzle - Google Patents

Description

  The present invention relates to a cleaning nozzle that performs cleaning by ejecting liquid and sucks the ejected liquid.

  2. Description of the Related Art A cleaning nozzle that jets a liquid (cleaning liquid) at a high pressure by a high-pressure pump to clean a floor, a wall surface, and the like is generally widely used because it can be cleaned in a short time without damaging the floor, the wall surface, and the like. In recent years, a circulation type cleaning nozzle has been proposed in which the cleaning liquid injected from the nozzle (injection unit) is sucked and collected in a storage tank, foreign matter is removed through a filter, and then injected from the injection unit again (for example, a patent) Reference 1). The cleaning nozzle described in Patent Document 1 is connected to a high-pressure pump, a suction device, and a storage tank placed on a carriage. The cleaning nozzle includes a casing that covers the periphery of the ejection unit, and the casing is provided with a suction port. The suction port is connected to a suction device, and the cleaning liquid sprayed from the spraying portion by the suction device is sucked and collected in a storage tank.

  The suction port and the suction device are connected by a thick and flexible hose, and the injection unit and the high-pressure pump are often connected by a thin and hard pipe. The user grips the pipe and moves the cleaning nozzle.

Japanese Patent No. 3984777

  However, since the pipe is thin, it is difficult to grasp, and the thick hose is easily entangled with the high-pressure pump, the suction device or the carriage due to the movement of the washing nozzle, and is difficult to handle.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a cleaning nozzle that is easy to grasp and handle.

A cleaning nozzle according to the present invention is a cleaning nozzle that includes an ejection unit that ejects liquid and a housing that covers the ejection unit and has a suction port that sucks liquid, and protrudes from the housing to the outside. A hose connection part for connecting a flexible hose through which the liquid supplied to the ejection part flows, and a suction pipe provided at the suction port, through which the sucked liquid flows and connects a pipe having a diameter larger than that of the hose and a pipe connection part which, the pipe connecting portion and said pivot tare Rukoto to the housing.

  The cleaning nozzle according to the present invention includes a pivot fixed to an edge portion of the suction port, the pipe connection portion has a hollow semi-cylindrical shape, and a circumferential surface thereof extends from the suction port to the outside of the housing. It is arranged in the housing so as to protrude and close the suction port, the pivot shaft passes through its end surface, and rotates around the pivot shaft, and protrudes from the peripheral surface of the rotation portion And a connecting portion for connecting the pipes.

  The cleaning nozzle according to the present invention is characterized in that a weight is disposed in the casing so as to be spaced apart from the pipe connecting portion.

  The cleaning nozzle according to the present invention is characterized in that a wheel is provided on the lower side of the casing, and the pipe connecting portion and the weight are arranged in parallel along a moving direction of the casing by the rotation of the wheel. And

  The cleaning nozzle according to the present invention includes an axle support portion that supports an axle of the wheel, and an elastic member disposed between the housing and the axle support portion.

  The cleaning nozzle according to the present invention includes a shaft protruding upward from the axle support portion and penetrating the housing, and the elastic member is provided around the shaft.

A cleaning nozzle according to the present invention includes an ejection unit that ejects liquid, a housing that covers the ejection unit and has a suction port that sucks the liquid, and a wheel disposed on the lower side of the housing. In the cleaning nozzle, an axle support portion that supports the axle of the wheel, an elastic member disposed between the housing and the axle support portion , and a shaft that protrudes upward from the axle support portion and penetrates the housing. wherein the elastic member is characterized tare Rukoto was provided around said axis.

  In the cleaning nozzle according to the present invention, the axle support portion has an upper surface portion and two opposing side surface portions protruding downward from the upper surface portion, and the axle is supported between both side surface portions. Protrudes upward from the upper surface and is inserted into a hole provided in the housing.

In the present invention, a flexible hose is connected to the hose connection, the liquid is supplied to the injection unit, a pipe having a diameter larger than that of the hose and a rigid pipe is connected to the pipe connection unit, and the liquid injected from the injection unit is Suction. The user easily grasps the large diameter and hard pipe, and the hose is small in diameter and flexible and easy to handle.
Moreover, the pipe connection part is pivotally supported by the housing, and rotates according to the operation of the pipe by the user.

  In the present invention, the rotating portion rotates around an axis fixed to the edge portion of the suction port, thereby realizing the rotation of the pipe connecting portion. Further, the rotating part is arranged so as to close the suction port, so that a reduction in suction force is prevented.

  In the present invention, even when the user pulls the pipe toward the pipe connection portion, a moment opposite to the moment generated by the pull is generated by the weight, and the casing does not tilt.

  In the present invention, even when the user pulls the pipe toward the pipe connecting portion, a moment on the opposite side to the moment generated by the pulling is generated by the weight, the casing does not tilt, and the wheel does not float.

In the present invention, a brush is often attached to the casing of the cleaning nozzle, and cleaning is performed by pressing the casing to bring the brush into contact with the floor, wall surface, and the like. In the present invention, when the concave portion is washed, the elastic member is shortened by the user pressing with a strong force, the distance between the casing and the axle support portion is shortened, the casing approaches the concave portion, and the brush is in the concave portion. Contact. Also, when cleaning the convex part, by loosening the force pressed by the user, the elastic member extends, the distance between the housing and the axle support becomes longer, a gap is created between the housing and the cleaning part, and the liquid The suction of the housing prevents the housing from sticking to the convex part.
In addition, an elastic member is provided on the shaft that protrudes upward from the axle support portion and penetrates the housing, and the expansion and contraction of the elastic member is guided to the shaft to smoothly shorten or extend the distance between the housing and the axle support portion. Do.

  In the present invention, the axle is supported between both side surfaces of the axle support portion, and the shaft protruding from the upper surface portion of the axle support portion is inserted into a hole formed in the housing. Since the elastic member is provided around the shaft, the elastic member expands and contracts according to the magnitude of the force pressed by the user, and the distance between the concave portion or the convex portion and the housing is appropriately maintained.

  In the cleaning nozzle according to the present invention, a flexible hose is connected to the hose connection, a liquid is supplied to the injection unit, a pipe having a larger diameter and harder than the hose is connected to the pipe connection unit, and the injection unit The liquid jetted from is sucked. Since the user can easily hold the large-diameter and hard pipe, the operability is improved. The hose has a small diameter and is easy to handle.

FIG. 3 is a perspective view schematically showing a cleaning nozzle. It is a front view which briefly shows a washing nozzle. It is a bottom view which shows a washing nozzle schematically. It is sectional drawing which made the IV-IV line shown in FIG. 2 the cutting line. It is a partial side sectional view showing typically a washing nozzle.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating a cleaning nozzle according to an embodiment. 1 is a perspective view schematically showing the cleaning nozzle, FIG. 2 is a front view schematically showing the cleaning nozzle, FIG. 3 is a bottom view schematically showing the cleaning nozzle, and FIG. 4 is a section line IV-IV shown in FIG. FIG. 5 is a partial side sectional view schematically showing the cleaning nozzle.

  The cleaning nozzle includes an ejection unit 1 that ejects liquid and a cover 2 that surrounds the ejection unit 1. The cover 2 has a lower cover portion 2a having a hollow pyramid shape and an upper cover portion 2b communicating with the upper portion of the lower cover portion 2a and having a rectangular tube shape. The lower surface of the lower cover portion 2a is open. The upper surface of the upper cover part 2b is opened, and the injection part 1 is arranged in the upper cover part 2b.

  The cover 2 is covered with a housing 3 and is fixed to the housing 3. The housing 3 has a rectangular parallelepiped shape in which an inclined surface 11 is formed on a part of the upper surface. The housing 3 is externally attached to a housing portion 10 for housing the cover 2 and two side surfaces 13 and 13 perpendicular to the inclined surface 11 in the housing portion 10. Side plate portions 20 and 20 projecting in the direction are provided. The accommodating portion 10 has a surface (hereinafter referred to as a back surface 15) continuous with the lower edge portion of the inclined surface 11, and a surface (hereinafter referred to as a front surface 14) facing the back surface 15. The other part of the upper surface of the housing part 10 forms a flat surface 12. In addition, the lower edge part of the accommodating part 10 is located above the lower edge part of the cover 2.

  The side plate portion 20 is substantially parallel to the flat surface 12 and extends along the side surface 13 of the housing portion 10. As shown in FIG. 5, two cylindrical bosses 21 and 21 (holes) penetrating vertically from the upper surface of the side plate portion 20 protrude. The cylindrical bosses 21 are spaced apart from each other on the inclined surface 11 side and the opposite side of the inclined surface 11.

  Wheels 5, 5, 5, 5 are arranged below the cylindrical bosses 21, 21, 21, 21 respectively. A through hole 5a penetrating in the axial direction is provided at the center of the wheel 5, and the axle 5b is inserted through the through hole 5a. The posture of the axle 5 b is perpendicular to the side surface 13 of the housing portion 10. An axle support portion 6 that supports the axle 5 b is provided below the side plate portion 20 so as to cover the upper portion of the wheel 5. The axle support portion 6 extends along the side plate portion 20. The axle support portion 6 is opposed to the side plate portion 20, and includes an upper surface portion 6a positioned between the side plate portion 20 and the wheel 5, and side surface portions 6b and 6b protruding downward from the two long edge portions of the upper surface portion 6a. With. The wheel 5 is located between the two side surfaces 6b, 6b, and the axle 5b passes through the two side surfaces 6b, 6b. A washer 5c is provided on the axle 5b between the side surface of the wheel 5 and the side surface portion 6b. The wheel 5 rotates around the axle 5b.

  Above the wheel 5, the shaft 7 protrudes upward from the upper surface portion 6a. The shaft 7 includes a small-diameter shaft portion 7a and a protruding end portion of the shaft portion 7a, and includes a head portion 7b having a diameter larger than that of the shaft portion 7a. The shaft portion 7 a is inserted into the cylindrical boss 21, and the head portion 7 b is positioned above the tip of the cylindrical boss 21. The diameter of the head 7 b is larger than that of the cylindrical boss 21, and a washer 7 c is provided between the head 7 b and the cylindrical boss 21. On the lower side of the cylindrical boss 21, a coiled spring 8 (elastic member) is provided around the shaft portion 7a. The spring 8 is located between the side plate portion 20 and the upper surface portion 6a. In place of the spring 8, other elastic members such as rubber and urethane sponge may be used.

  The side plate portion 20 of the housing 3 is supported by the axle support portion 6 and the wheel 5 via the spring 8. When a downward force is applied to the housing 3, the spring 8 is shortened using the shaft 7 as a guide, and the housing 3 is lowered. At this time, the shaft 7 relatively moves upward in the cylindrical boss 21. When the downward force is released, the elastic restoring force of the spring 8 causes the spring 8 to extend using the shaft 7 as a guide, and the housing 3 is raised. At this time, the shaft 7 relatively moves downward in the cylindrical boss 21.

  The inclined surface 11 is provided with a rectangular suction port 11a for sucking liquid. Support plates 11b and 11b that support a pivot 34, which will be described later, protrude from the two edge portions of the suction port 11a along the inclination direction of the inclined surface 11 toward the inside of the housing 3 respectively. The support plates 11b and 11b face each other. A pivot 34 is supported between the support plates 11b, and the axial length direction of the pivot 34 is substantially the same as the axial direction of the axle 5b. On the pivot 34, a pipe connecting portion 30 for connecting a pipe is rotatably supported.

  The pipe connecting portion 30 has a hollow semi-cylindrical shape (a shape obtained by cutting a circular cylinder in half along the axial direction, and a cross-sectional shape in a direction orthogonal to the axial direction forms a semicircular shape). A rotating portion 31 that can rotate around the pivot 34 is provided. The rotating part 31 has a peripheral surface and semicircular end faces, and a part of the rotating part 31 that faces the peripheral surface is open. The peripheral surface of the rotating portion 31 protrudes from the suction port 11a to the outside of the housing 3 so that the rotating portion 31 closes the suction port 11a. Through holes 31 a and 31 a are provided in both end faces of the rotating portion 31. The pivot 34 is inserted into the through holes 31a and 31a.

  A connecting portion 32 that connects the pipe protrudes from the peripheral surface of the rotating portion 31. The connecting portion 32 has a cylindrical shape. The pipe connection portion 30 is arranged in the suction port 11a so that the connection portion 32 protrudes outward from the suction port 11a. A cylindrical body 33 that can rotate around the axis is fitted around the pivot 34, and the rotating portion 31 is supported by the pivot 34 via the cylindrical body 33. The cylindrical body 33 guides the rotating unit 31 so that the rotating unit 31 rotates smoothly. The pipe connection portion 30 can rotate about the pivot 34 as a support shaft. In addition, the pipe connection part 30 is designed so that the peripheral surface of the rotation part 31 may block the suction port 11a no matter what direction the connection part 32 faces due to the rotation of the rotation part 31.

  In the accommodating portion 10, brushes 41, 41, 41, 41 are provided on the side surfaces 13, 13, the front surface 14, and the back surface 15, respectively. The brush 41 is supported by a support frame 40, and the support frame 40 is fixed to the front surface 14, the back surface 15, and both side surfaces 13, 13 with screws 42 so that the tip of the brush 41 is positioned on the lower side. The brush 41 surrounds the lower edge of the housing 3 from four directions.

  When no force from above is applied to the housing 3, the side plate portion 20 is pushed up by the spring 8, and the tip of the brush 41 is positioned between the lower edge of the cover 2 and the lower end of the wheel 5. To do. When the force from above acts on the housing 3, the spring 8 is shortened, and the tip of the brush 41 moves toward the lower end of the wheel 5 to contact the floor and the wall. Since the cover 2 is fixed to the housing 3, it moves together with the housing 3, and the relative positional relationship between the two does not change due to the expansion and contraction of the spring 8.

  An insertion hole 12 a for inserting the injection unit 1 is provided on the flat surface 12 (upper surface) of the housing unit 10. The position of the insertion hole 12a corresponds to the opening position of the upper surface of the upper cover portion 2b. One or more weights 60 are placed on the flat surface 12, and the weight 60 has a through hole 61. The weight 60 is provided on the flat surface 12 so that the position of the through hole 61 corresponds to the position of the insertion hole 12a. The weight 60 is screwed to the flat surface 12.

  A hose connection part 50 having a tubular shape curved toward the pipe connection part 30 side is inserted into the through hole 61. The injection part 1 is connected to the lower end portion of the hose connection part 50, and the injection part 1 is inserted into the insertion hole 12a and is disposed in the upper cover part 2b. The hose connection part 50 is fixed to the flat surface 12. The diameter of the upper end portion of the hose connection portion 50 is sufficiently smaller than the diameter of the connection portion 32 of the pipe connection portion 30. For example, the diameter of the upper end portion of the hose connection portion 50 is about 5 mm, whereas the diameter of the connection portion 32 is about 35 mm.

  A small diameter flexible hose (not shown), for example, one end portion of a hose made of a synthetic resin member is connected to the hose connection portion 50, and the other end portion of the hose is connected to a high pressure pump (not shown) that pumps liquid. . One end of a large-diameter hard pipe (not shown), for example, a stainless steel pipe is connected to the pipe connecting portion 30, and the other end of the pipe is connected to a suction device (not shown) for sucking liquid. . The suction device is connected to the storage tank, and a filter (not shown) for removing foreign matter is interposed in the connection path between the suction device and the storage tank. The liquid in the storage tank is sent to the hose by a high pressure pump.

  When the user operates an operation unit (not shown) and the high-pressure pump is driven, the liquid in the storage tank is sent to the hose by the high-pressure pump and is ejected from the ejection unit 1 through the hose connection unit 50. The user grasps the pipe and cleans the floor, wall, etc. while pressing the housing 3. The liquid ejected from the ejection unit 1 is concentrated on a predetermined area such as a floor or a wall by the cover 2, and a high pressure is applied to the area. Foreign matter adhering to the floor, walls, etc. is peeled off by the pressure of the injected liquid. Further, the foreign matter that cannot be completely peeled off by the pressure of the liquid can be scraped off by the brush 41.

  When the user operates the operation unit and the suction device is driven, the inside of the pipe and the pipe connection unit 30 becomes negative pressure, and the space between the housing 3 and the cover 2 also becomes negative pressure. As a result, foreign matter or fluid on the surface such as a floor or a wall is sucked from between the lower cover portion 2 a and the side surfaces 13, 13, the front surface 14, and the back surface 15 of the housing 3. As described above, since the tip of the brush 41 is substantially at the same position as the lower end of the wheel 5, the gap between the lower edge of the housing 3 and the floor, wall, etc. is closed by the brush 41. Therefore, foreign matter can be prevented from entering the housing 3 from the outside, and the jetted liquid can be prevented from splashing outside. In addition, air is prevented from entering the casing 3 from the outside, and the force for sucking in foreign matter or liquid is prevented from being reduced by the intrusion of air.

  The periphery of the injection unit 1 is covered with a cover 2, and a housing 3 is provided around the cover 2. The housing 3 is provided with a suction port 11a. For this reason, the compartment from which the liquid is ejected and the compartment from which the liquid is sucked are separated by the cover 2, and the pipe connecting portion provided in the suction port 11a before the liquid ejected from the ejecting section 1 reaches the floor, wall, etc. It is possible to prevent direct suction from 30. Further, since the lower edge portion of the housing 3 is located above the lower edge portion of the cover 2, it is even more effective that the liquid ejected from the ejection unit 1 is directly sucked from the pipe connection unit 30. Can be prevented.

  When the liquid is ejected from the ejection unit 1, the ejected liquid and the foreign matter separated from the floor, walls, and the like are sucked into the housing 3 and pass through the pipe connection unit 30 and the pipe. The sucked foreign matter is removed by a filter, and the liquid is stored in a storage tank. Then, the liquid is again ejected from the ejection unit 1 by the high-pressure pump and circulates.

  In the cleaning nozzle according to the embodiment, a small diameter and flexible hose is connected to the hose connection part 50 to supply liquid to the injection unit 1, and a pipe that is larger in diameter and harder than the hose is connected to the pipe connection part 30. The liquid ejected from the ejection unit 1 is sucked by connecting. Since the user can easily hold the large-diameter and hard pipe, the operability can be improved. In addition, the hose has a small diameter and is difficult to be entangled and easy to handle.

  In order to increase the pressure due to the liquid ejected from the ejection unit 1, it is desirable that the hose has a small diameter, while the pipe need not have a smaller diameter as the flow path for the ejection. Therefore, as described above, the suction flow path is made of a large-diameter hard pipe and is configured to be gripped by the user, so that both high-pressure maintenance and user convenience can be achieved.

  Moreover, the pipe connection part 30 is pivotally supported in the housing | casing 3, and rotates according to operation of the pipe by a user. More specifically, the rotating part 31 rotates around the pivot 34 supported by the support plate 11b of the suction port 11a, and the pipe connecting part 30 rotates. The user can move the pipe connecting portion 30 in the direction of the front 14 and upward by rotating, or move the pipe connection 30 in the direction of the rear 15 and downward. When pressing the cleaning nozzle against the floor, wall, etc., the user can move the pipe in the direction of the front 14 and upward, so that the posture of the pipe can be made substantially perpendicular to the floor, wall, etc. The washing nozzle can be pressed down with force. When moving the cleaning nozzle, the user can move the pipe toward the back surface 15 and downward to bring the pipe into a posture parallel to the floor or wall. Can be moved.

  Even when the user pulls the pipe toward the back surface 15, a moment opposite to the moment caused by the pull acts on the housing 3 by the weight 60, so that the housing 3 tilts toward the back surface 15 and the wheel 5 floats. And the stability of the cleaning nozzle can be improved. Further, when the wheel 5 is lifted, it is not necessary to return the cleaning nozzle to the original posture, the work is not interrupted, and the work efficiency can be improved.

  Further, the axle 5 b is supported between both side surface parts 6 b of the axle support part 6, and the shaft 7 protruding upward from the upper surface part 6 a of the axle support part 6 is inserted into the cylindrical boss 21 provided in the housing 3. Since the spring 8 is provided around the shaft 7, the spring 8 expands and contracts according to the magnitude of the force pressed by the user, and the distance between the recess or projection such as the floor or wall and the housing 3 can be appropriately maintained. it can.

  A brush 41 is attached to the housing 3 of the cleaning nozzle. By pressing the housing 3, the brush 41 can be brought into contact with a floor, a wall surface or the like for cleaning. When cleaning the recess, the user presses the cleaning nozzle with a strong force, so that the spring 8 is shortened. Therefore, the distance between the axle support portion 6 and the side plate portion 20 is shortened, and the housing 3 approaches the recess. The brush 41 can be brought into contact with the recess. Further, when the convex portion is washed, the user 8 loosens the force for pressing the washing nozzle, so that the spring 8 is extended and the distance between the axle support portion 6 and the side plate portion 20 becomes long, and the housing 3 and the convex portion are separated. Since a gap is generated between them, it is possible to prevent the housing 3 from adhering to the convex portion due to the suction of the liquid and hindering the movement of the cleaning nozzle.

The above-described cleaning nozzle is not only applied to the circulation type cleaning device, but can also be applied to other devices. For example, the present invention may be applied to a non-circular cleaning device in which a water pipe and a hose are connected and the liquid sucked into the pipe is discharged to a sewer pipe.
Although the washing nozzle described above has the wheel 5, the wheel 5 may not be provided. Even in this case, the brush 41 closes the gap between the lower edge of the housing 3 and the floor, wall, or the like. Therefore, foreign matter can be prevented from entering the housing 3 from the outside, and the jetted liquid can be prevented from splashing outside. Further, it is possible to prevent air from entering the housing 3 from the outside, and it is possible to prevent a force for sucking in foreign matter or liquid from being reduced due to the intrusion of air.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The technical features described in each embodiment can be combined with each other, and the scope of the present invention is intended to include all modifications within the scope of claims and the scope equivalent to the scope of claims. Is done.

DESCRIPTION OF SYMBOLS 1 Injection part 3 Housing | casing 5 Wheel 5b Axle 6 Axle support part 6b Side surface part 7 Axis 8 Spring (elastic member)
10 receiving portion 20 side plate portion 21 cylindrical boss (hole)
30 Pipe connection part 31 Rotating part 32 Connection part 34 Axis 50 Hose connection part 60 Weight

Claims (8)

In a cleaning nozzle comprising an ejection unit that ejects liquid, and a housing that covers the ejection unit and has a suction port that sucks liquid.
A hose connection part that protrudes outside from the housing and connects a flexible hose through which the liquid supplied to the ejection part flows;
A pipe connection part provided at the suction port, through which the sucked liquid flows, and connecting a pipe having a diameter larger than that of the hose and a hard pipe ;
Equipped with a,
Cleaning nozzle the pipe connecting portion, characterized in Thea Rukoto pivotally supported on the housing. A pivot fixed to the edge of the suction port;
The pipe connection part is
Forming a hollow semi-cylindrical shape, its peripheral surface protrudes from the suction port to the outside of the housing and is arranged in the housing so as to block the suction port, and the pivot passes through the end surface, A rotating part rotatable around the pivot axis;
Protrudes from the peripheral surface of the rotating part, the cleaning nozzle according to claim 1, characterized in that it comprises a connecting portion for connecting the pipe. The washing nozzle according to claim 1 or 2 , wherein a weight is arranged in the casing so as to be separated from the pipe connection portion. Wheels are provided on the lower side of the housing,
The cleaning nozzle according to claim 3 , wherein the pipe connection portion and a weight are arranged in parallel along a moving direction of the housing due to rotation of the wheel. An axle support for supporting the axle of the wheel;
The cleaning nozzle according to claim 4 , further comprising: an elastic member disposed between the casing and the axle support portion. A shaft that protrudes upward from the axle support and penetrates the housing;
The cleaning nozzle according to claim 5 , wherein the elastic member is provided around the shaft. In a cleaning nozzle comprising: an ejection unit that ejects liquid; a housing that covers the ejection unit and has a suction port that sucks liquid; and a wheel disposed on the lower side of the housing;
An axle support for supporting the axle of the wheel;
An elastic member disposed between the housing and the axle support ;
Projecting upwardly from the axle supporting portion, and a shaft passing through the housing,
Cleaning nozzle the elastic member is characterized tare Rukoto was provided around said axis. The axle support portion has an upper surface portion and two opposing side surface portions projecting downward from the upper surface portion,
The axle is supported between both sides,
The cleaning nozzle according to claim 7 , wherein the shaft protrudes upward from the upper surface portion and is inserted into a hole provided in the housing.

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