JP5762425B2 - Water saving top - Google Patents

Description

  The present invention is, for example, attached to a water faucet (including not only general water faucets but also special-purpose water faucets for laboratories) and water discharge pipes such as shower heads. The present invention relates to a water-saving coma that saves water discharged from a pipe.

Conventionally, water saving has been demanded in ordinary households and commercial facilities. As one of the water-saving means, a technique for attaching a water-saving top to a water discharge tap such as a water tap is known.
The water saving by the water saving top in the prior art is roughly divided into two types.

  The first type is attached to the back of a water discharge tap such as a water faucet and serves as a resistance against water pressure in the pipe to reduce the water pressure discharged from the water tap. When this type of water-saving top is used, even if the faucet is twisted to increase the amount of opening, water will only come out in a so-called “a little bit”.

  In the second type, the outflow diameter is narrowed down in the vicinity of the outlet of a water discharge tap such as a water faucet, and the outflow amount of water is forcibly reduced. When this type of water-saving top is used, if the amount of opening is increased by twisting the faucet, the water flow blows out vigorously, but it is a so-called thin water flow and the overall outflow amount can be kept small.

  Conventionally, foam water has been demanded in ordinary homes and commercial facilities. Foamed water has a gentle touch when washing hands and is a gentle water flow even when washing glass and ceramics, so it is used without fear of damaging the glass and ceramics. In addition, foamed water does not rebound even if it hits glass or ceramics during cleaning, and there is no risk of splashing water or affecting the surrounding environment, so not only ordinary households but also stations and public facilities Widely used such as water faucets and water faucets in laboratory laboratories.

  For example, a common water-saving piece has a structure in which the vicinity of the outlet of the water discharge pipe is closed and a through-hole penetrating from the upper surface on the inflow side to the lower surface on the outflow side is opened. When such a water-saving piece is attached, the outflow of water passes through a through-hole having a diameter smaller than the diameter of the discharge pipe, so that the amount of water outflow is controlled and a water-saving effect is obtained. Some of the through holes are provided at the center, and some of the two or three are appropriately arranged.

  For example, in a water-saving top disclosed in Japanese Patent Application Laid-Open No. 9-095985, a cylindrical top body and at least three penetrations formed from the water inflow side end surface of the top body to the other water outflow side end surface. The through holes are formed so that a mutual interval is widened from the water inflow side end surface of the top body toward the water outflow side end surface. In addition, a large-diameter flange is integrally formed on the edge of the water inflow side of the top body so that it can be fixed inside a water faucet, etc., and the three through holes are on the water inflow side of the top body. A device is disclosed that is formed on the end face, the inlets of the through holes are arranged concentrically at equal angular intervals, and the outlets of the through holes are also concentrically arranged at equal angular intervals.

JP-A-9-095985 JP 2000-104300 A JP 2007-154975 A

The conventional water-saving coma has the following problems.
The conventional water-saving coma has the following problems.
The first type of water-saving coma surely increases the water-saving effect itself, but the water is only so-called “a little bit” from the faucet, so it is not useful in actual use. In view of the purpose of washing hands, the so-called “slightly” water does not wash hands well, resulting in inconvenience to users.

  The second type of water-saving top, for example, the water-saving top as shown in JP-A-9-095985 has the following problems. This conventional water-saving coma passes through a through-hole having a smaller diameter than that of the water discharge pipe, so the water outflow diameter is certainly small, but the applied water pressure is large, so the water outflow is from the small-diameter through hole. There was a problem that the water flow to be strong became so strong that it hindered its use. In other words, there was a risk that the water flow became intensely strong from the small-diameter through hole, and the water flow became so thin that it was painful when the hand was held over. When attached to a water faucet in a general household, it may become unsuitable for hand washing, and when attached to a water faucet in a laboratory, it may become so strong that it is unsuitable for washing laboratory equipment.

In both the so-called first type and the second type, it is necessary to adjust the throttling of the water-saving coma according to the water pressure change of the water supply and the target water-saving rate.
Most conventional water-saving tops have a water-saving top throttle mechanism built into the housing, and most of them cannot be adjusted from the outside when attached to a water tap. The type with a built-in throttle mechanism for the water-saving top is removed from the faucet once to adjust the throttle of the water-saving top, and the internal throttling mechanism is opened with the top and bottom portions of the water-saving top open. Was to adjust. In this way, the type with a built-in water-saving top throttle mechanism cannot be adjusted dynamically while attached to a water faucet, so it is not suitable for finely adjusting the water-saving rate according to the usage situation. matched.

  Japanese Patent Application Laid-Open No. 2007-154975 discloses a conventional water-saving top that can operate a throttle mechanism from the outside. As shown in FIG. 10 of the publication, Japanese Patent Laid-Open No. 2007-154975 discloses a flow control valve that adjusts the amount of flowing water in a timely manner by rotating the discharge pipe portion 9 with respect to the relay pipe portion 5. Is disclosed. This is because the outlet of the relay pipe part 5 has a plurality of holes, the outlet of the water control plate 7 has a plurality of holes, and the discharge pipe part 9 is rotated with respect to the relay pipe part 5 to operate both of them. The amount of water passing therethrough is adjusted by changing the area where the holes overlap. As a result, it is possible to cause relative rotation of the internal member by gripping and rotating the outer peripheral wall surface of the member from the outside.

  As described above, the water-saving piece of Japanese Patent Application Laid-Open No. 2007-154975 can operate the throttle mechanism from the outside, but it is only a relative movement that rotates the members horizontally inside the water-saving piece. In other words, the water-saving piece of Japanese Patent Application Laid-Open No. 2007-154975 simply changes the area of the through-hole, and can dynamically change the diameter of the water flow flowing out in a columnar shape.

  Inventor Masaaki Takano has been working on the development of water-saving tops, and has also conducted extensive research on the throttling mechanism inside the water-saving top. Among them, in order to increase the water saving rate with the type of water saving piece attached to a general faucet, it is necessary to use a through-hole having an area smaller than the area of the water discharge pipe in the water saving piece. It was noted that the shape of the water flow launched from the through hole can be controlled by devising the shape of the through hole while reducing the area of the through hole. In other words, we have researched that various water flows can be formed by changing the shape of the throttling mechanism by giving the relative movement between the members inside the water-saving top by rotating or pushing the members from the outside. .

  As the inventor Masanobu Takano has been researching, the relative movement between members inside the water-saving top is not a horizontal relative rotational movement, but a variety of through-hole shapes such as vertical or diagonal three-dimensional relative movement. We focused on being able to control anything. For example, if the shape of the through hole is a slit-shaped gap and the water driven out from the through hole is made into the shape of a water flow film, a variety of ingenuity can be applied inside the water-saving piece to obtain a good quality water-saving piece, In order to adjust the thickness and shape of the water flow film from the outside, a three-dimensional relative movement such as vertical or diagonal is required as a relative movement between members inside the water-saving piece.

  Here, inventor Masaaki Takano is working on the development of a water-saving top that causes a three-dimensional relative movement, such as vertical or diagonal, between members inside the water-saving top when rotating a part of the outer wall of the water-saving top from the outside. Faced with the following problems. In the water-saving frame, when the members are screwed together with screws, the internal members move relatively by tightening or loosening the screws, but there is a limit to the processing accuracy of the screws. Since the screw rotates smoothly, it is necessary to play, so that it is difficult to precisely control the movement of the member only by screwing the screw.

  As in the conventional water-saving piece disclosed in Japanese Patent Application Laid-Open No. 2007-154975, only the relative rotation of the internal members does not require a high precision movement, and the accuracy of the screw screwing is sufficient. The accuracy is just in time and there are no difficulties. However, the movement of the member required by the inventor Masaaki Takano precisely adjusts the shape, width, and angle of the slit formed as the gap between the members inside the water-saving frame, and is more accurate than the accuracy of the screw screwing. However, high accuracy is required and is difficult.

  In view of the above-mentioned problems, the present invention operates the internal member with high accuracy by moving it in the vertical direction, moving in the oblique direction, or moving along the curve by operating it from the outside with the water-saving piece attached to the water tap. The object is to provide a water-saving frame that can be moved relative to each other in three dimensions. In particular, the present invention provides a water-saving piece that can relatively move an internal member in a three-dimensional manner with high accuracy even when the internal members move by screwing with a screw.

In order to achieve the above object of the present invention, a water-saving piece according to the present invention is a water-saving piece that is attached to a water discharge pipe and saves water to be discharged. A water flow forming portion where an accelerated water flow is launched downstream from the water flow tube, a cylindrical body for discharging the accelerated water flow launched from the water flow forming portion, and a first member provided with at least the cylindrical body. And the second member, a movable mechanism that relatively moves the first member and the second member, and the first member and the second member separately from the movable mechanism. A guide portion that guides the movable member to move in the same direction as the moving direction of the movable mechanism while keeping the wall surfaces of the first member and the second member relative to each other. The direction of movement is It is a water-saving frame to assist as directed to.
For example, a through hole is provided in the first member so as to penetrate the cylindrical body of the second member, and the guide portion includes an inner peripheral wall surface of the through hole of the first member and the first member. The guide member is moved so as to move in the same direction as the moving direction of the movable mechanism, along the outer peripheral wall surfaces of the cylindrical body of the two members, and the moving direction of the movable mechanism is aligned with the axis of the cylindrical body. Assistance can be provided to facilitate parallelism.

  With the above configuration, in addition to the movement of the members by the movable mechanism, the wall surfaces of the first member and the wall surface of the second member can be used as guides. Since the movement direction is determined by one movement control, high movement accuracy is likely to occur. Here, even if one of the two movement controls is a loosely-moving movable mechanism for screwing, the wall surface that is the other movement control, for example, the outer peripheral wall surface of the cylinder and the inner peripheral wall surface of the through hole are high. Since precise machining accuracy can be achieved, high movement accuracy can be obtained, and internal members can be relatively moved in a three-dimensional manner with high accuracy.

  Here, the structure of the water-saving coma can be classified into an internal space submerged structure that becomes a passage for the water flow and the accelerated water flow, and a non-internal space submerged structure that does not touch the water flow and the accelerated water flow. It is preferable that the outer peripheral wall surface of the cylindrical body and the guide portion belong to the non-internal space flooded structure, and that they do not touch water.

  With the above configuration, in the water-saving top that remains attached to the faucet for a long period of time, the movable mechanism serving as the movement control point, the outer peripheral wall surface of the cylindrical body, and the guide portion can be configured so as not to contact water. In addition, it is possible to avoid the occurrence of problems such as deterioration in accuracy and inability to move due to the adhesion of deposits called scale and corrosion due to the occurrence of rust.

Next, in the water-saving piece having the above-described configuration, in order to further increase the movement accuracy, there are a plurality of the cylinders, that is, a plurality of cylinders that divide and flow out the accelerated water flow launched from the water flow forming unit. And the structure by which the said guide part is provided with two or more corresponding to the said some cylinder is preferable.
As described above, there are a plurality of cylinders, and the movement control points are combined with a plurality of movable mechanism points by moving along the outer peripheral wall surfaces of the plurality of cylinders simultaneously by the plurality of guide portions. If it is, it becomes three or more, and an internal member can be relatively moved three-dimensionally with higher accuracy.

Examples configuration of the guide portion is a metal plate provided with through holes so as to correspond to the cylindrical body, which the through hole is provided with a peripheral wall inner along the outer wall of the cylindrical body, the metal plate Is disposed so as to pass the cylinder through the through-hole, and the movable plate moves the metal plate relatively in parallel with the axis of the cylinder.

  Next, while applying the principle of the water-saving piece of the present invention, it is possible to make the flowing water flow into foam water. That is, in addition to the above-described configuration, an air cavity that is provided in the middle of the water flow pipe as a passage location of the accelerated water flow and that is maintained in a state where the air is filled even when the accelerated water flow flows, and the air cavity An air passage having a conduction hole for conducting outside air, and a foam water generating means for forming foam water by entraining air blown into the air cavity from the conduction hole into the accelerated water flow, The outflow water is discharged as foam water.

  According to the water-saving piece of the present invention, since the movement direction is determined by two movement controls in at least a three-dimensional movement direction, the water-saving piece is operated from the outside with the water-saving piece attached to the water faucet. The member can be relatively moved in a three-dimensional manner such as a vertical movement, an oblique movement, or a movement along a curve. In particular, even if one of the two movement controls cannot be machined with a screw mechanism that is fast and slow, the outer peripheral wall surface and the guide part of the other movement control are highly precise. Since the processing accuracy can be achieved, the internal member can be relatively moved in a three-dimensional manner with high accuracy.

It is a figure which shows one structural example of the water-saving top 100 of this invention. It is the figure which decomposed | disassembled and shown to the four members at the time of taking the longitudinal cross section by the AA line of FIG. 1, and the longitudinal cross-sectional view of the water-saving piece 100 which took the longitudinal cross section by the AA line of FIG. It is the figure which decomposed | disassembled and shown to four members at the time of taking the longitudinal cross-section by the BB line of FIG. 1, and the longitudinal cross-sectional view of the water-saving piece 100 which took the longitudinal cross-section by the BB line of FIG. FIG. 5 is a diagram simply showing a movement of rotating the third member 30 from the outside and causing the first member 10 and the second member 20 to approach and separate from each other in the vertical direction via the movable mechanism 130. It is a figure which shows a mode that the disk body 11 of a 1st member is moving upwards relatively with respect to the mouth 21 on the mortar of a 2nd member. It is a figure explaining simply the guide function of the water-saving top 100 of the present invention. It is a figure which shows the state which sent the water flow through the water-saving top 100 shown in FIG.

DESCRIPTION OF SYMBOLS 100 Water-saving top 10 1st member 11 Disc body 12 Conduction hole 13 Cylindrical body 14 Disc body 15 Through-hole 16 Male screw 20 2nd member 21 Mouth on bowl 22 Cage body 23 Cage body 24 Cylinder body 25 outer peripheral wall surface 26 umbrella-shaped body 30 third member 31 hook-shaped body 32 female screw 40 fourth member 41 hook-shaped body 42 female screw 110 water flow forming portion 111 gap 120 cylindrical body 130 movable mechanism 140 guide portion

  An embodiment of the water-saving piece of the present invention will be described. However, it goes without saying that the scope of the present invention is not limited to the specific application, shape, number, etc. shown in the following examples.

Hereinafter, Example 1 is an example of the configuration of the water-saving piece 100 of the present invention, which is an example of a water-saving piece that can be relatively moved in the vertical direction by operating from the outside while being attached to the water tap. Indicates. A device in which the internal member is relatively moved along an oblique direction or a curve can be similarly applied.
The movable mechanism is a screw mechanism, but may be another movable mechanism.
Moreover, although it was set as the example which comprised the guide part by the outer peripheral wall surface of the cylinder of the 4th through-hole provided in the 1st member, and the 2nd member penetrated to the said 4th through-hole, it is restricted to the said combination First, the principle of the present invention can be applied as long as movement control is performed along some wall surface of the first member and some wall surface of the second member.

FIG. 1 is a diagram showing a configuration example of a water-saving piece 100 according to the present invention. The configuration example shown in FIG. 1 is a structure including a water flow forming unit 110, a cylindrical body 120, a movable mechanism 130, and a guide unit 140, and the water-saving piece 100 includes the first member 10, the second member 20, It is an example comprised from four members, the member 30 of 3 and the 4th member 40, and the top view, the side view, and the bottom view are represented.
The first member 10, the second member 20, the third member 30, and the fourth member 40 are not assembled as they are because some structures of the members abut each other on the drawing. In order to show the principle of the present invention in a simple manner, the description will be made with a small number of members. In actuality, it is necessary to configure each member with a plurality of small members so that each member can be separated.

2A is a longitudinal sectional view of the water-saving top 100 taken along the AA line in FIG. 1, and FIG. 2B is a longitudinal section taken along the AA line in FIG. It is the figure which decomposed | disassembled and showed the 1st member 10, the 2nd member 20, the 3rd member 30, and the 4th member 40 to four members.
3A is a vertical cross-sectional view of the water-saving top 100 taken along the vertical line BB in FIG. 1, and FIG. 3B is a case where the vertical cross-section is taken along the line BB in FIG. It is the figure which decomposed | disassembled and showed the 1st member 10, the 2nd member 20, the 3rd member 30, and the 4th member 40 to four members.
FIG. 4 shows a state where the assembled water-saving piece 100 is attached to the water tap 200, the third member 30 is rotated from the outside, and the first member 10 and the second member 20 are relatively perpendicular to each other. It is a figure which shows a mode that it adjusts to move to and approach / separate.
1, 2, 3, and 4 are shown as vertical sections so that the internal structure can be easily understood.
1, 2, 3, and 4, the water-saving piece 100 is a rotating body centered on the vertical axis. However, the cylindrical body (inner space 24, outer peripheral wall surface 25), guide portion, Reference numeral 15 is not a rotating body, but four are provided as shown in the bottom view of FIG.
Hereinafter, first, each component will be described, and then, in a state of being attached to the water tap 200, the third member 30 is rotated from the outside, and the first member 10 and the second member 20 are relative to each other. A mechanism for adjusting the position to move toward and away from each other in the vertical direction will be described.

  The first member 10 is a member having a longitudinal section as shown in FIGS. 2B and 3B, an inverted truncated cone-shaped disk body 11 at the upper portion, and a cylinder extending at the lower portion. A body 13 and a large disk body 14 disposed below the body 13 are provided. Further, a conduction hole 12 is provided on the side surface of the cylindrical body 13, and a large disk body 14 is provided with four through holes 15 provided in a circular shape and a male screw 16 provided on a circumferential edge. It has a configuration with.

In this example, in order to reduce the number of parts, the first member 10 is formed integrally with a structure that bears each component of a water flow forming portion, a movable mechanism, a guide portion, and a conduction hole, which will be described later. It is a structural example.
As will be described later, the four through-holes 15 of the first member 10 are fitted so that the shape and arrangement position thereof are smoothly and tightly aligned with the outer peripheral wall surface 25 of the four cylindrical bodies of the second member 20. Combined and assembled.

As shown in FIGS. 2 (b) and 3 (b), the second member 20 is provided with a mouth 21 on the mortar and a bowl-shaped body 22 at the upper part, and a bowl-shaped body 23 below the bowl 21. The four cylindrical bodies 24 (outer peripheral wall surface 25) provided in a circular shape are provided. In addition, an umbrella-like body 26 that is opened like an umbrella is provided on the wall surface inside the cylindrical body 24.
In this example, in order to reduce the number of parts, the cylindrical member 27 for securing a part of a water flow forming unit 110, an air cavity 120, a cylindrical body 130, and a conduction hole 160 to be described later with respect to the second member 20. It is a structural example formed by integrating the structure responsible for the configuration.
As will be described later, the four through-holes 15 of the first member 10 are fitted so that the shape and arrangement position thereof are smoothly and tightly aligned with the outer peripheral wall surface 25 of the four cylindrical bodies of the second member 20. Combined and assembled.

  As shown in FIGS. 2B and 3B, the third member 30 is a rotating body provided with a bowl-shaped body 31 and a female screw 32 on the inner periphery, and has a longitudinal section as shown. It is a cylindrical member. The female screw 32 serves as an attachment portion attached to the outer periphery of the water discharge pipe 200. Further, as shown in FIGS. 2A and 3A, the bowl-shaped body 31 is a structure that is locked to the bowl-shaped body 23 of the second member 20.

  As shown in FIGS. 2 (b) and 3 (b), the fourth member 40 is a rotating body provided with a collar 41 and a female screw 42 on the inner periphery, and has a longitudinal section as shown in the figure. It is a cylindrical member. The female screw 42 is a portion that is screwed with the male screw 16 of the first member 10 and forms a movable mechanism. Further, as shown in FIGS. 2A and 3A, the hook-like body 41 is a structure that is locked to the hook-like body 22 of the second member 20.

The water flow forming unit 110 is a portion that includes a gap serving as a passage for the water flow therein and launches an accelerated water flow downstream from the gap. In this configuration example, the gap between the disc body 11 of the first member 10 and the mouth 21 on the mortar of the second member 20 becomes the gap of the water flow forming portion.
In this configuration example, as shown in FIG. 7, which will be described later, a circulating water film 210 is punched as a water film from the gap of the water flow forming unit 110 and turns around.

  The cylindrical body 120 is a cylindrical body that discharges the accelerated water flow launched from the water flow forming unit 110, but in this configuration example, four cylindrical bodies 24 (outer peripheral wall surfaces 25) of the second member 20 are formed. The accelerated water stream launched from the water stream forming unit 110 is diverted to flow out. As will be described later, four guide portions 140 are provided as the through holes 15 of the first member 10 corresponding to the four cylinders 120.

  The movable mechanism 130 is a movable mechanism that relatively moves the first member 10 in which the cylindrical body 120 is provided and the second member 20 in which the through hole 15 is provided. The first member 10 and the second member 20 are relatively moved by the looseness of the screwing of the female screw 32 formed on the outer member of the large disk body 14 of the first member and the male screw 16 formed on the outer periphery of the first member. It is to be moved. Needless to say, the movable mechanism 130 may have a configuration other than the screw engagement of the screw.

  The guide unit 140 guides the first member 10 and the second member 20 so as to move in the same direction as the moving direction of the movable mechanism 130 along the wall surfaces of the first member 10 and the second member 20 separately from the movable mechanism 130. . The relative movement direction of the first member 10 and the second member 20 by the movable mechanism 130 is parallel to the axial direction of the cylindrical body 24, and assistance is provided so that the movement direction is accurately guided by the guide unit 140. Can do. The moving direction is the moving direction along the outer peripheral wall surface of the cylindrical body 120.

In this configuration example, the guide portion 140 is the metal plate 14 provided with the through hole 15 of the first member 10 so as to correspond to the outer peripheral wall surface 25 of the cylindrical body of the second member 20. An inner peripheral wall is provided along the outer peripheral wall surface 25 of the cylindrical body , and the metal plate 14 is disposed so that the outer peripheral wall surface 25 of the cylindrical body passes through the through hole 15.
In other words, the guide unit has a function of assisting the relative movement direction of the first member 10 and the second member 20 by the movable mechanism 130 to be easily parallel to the axial direction of the cylindrical body 120, that is, the vertical direction. To do.

FIG. 4 simply illustrates the movement of rotating the third member 30 from the outside and causing the first member 10 and the second member 20 to approach and separate from each other in the vertical direction via the movable mechanism 130. FIG.
FIG. 5 is a diagram illustrating a state in which the disk member 11 of the first member is moving upward relative to the mouth 21 on the mortar of the second member.
FIG. 6 is a diagram for briefly explaining the guide function of the water-saving top 100 of the present invention. In the drawing, hatching is given so that the portion of the first member 10 can be easily understood.

  First, as shown in FIG. 4, in this example, when the third member 30 is rotated from the outside to the right side, the female screw 32 formed on the third member and the large disc body 14 of the first member. The male screw 16 formed on the outer periphery of the first screw 10 is screwed and tightened, and the entire first member 10 is raised along the screwing direction of the screw. Here, the accuracy of the original movement control conforms to the processing accuracy of the female screw 32 formed on the third member and the male screw 16 formed on the first member.

  However, in the water-saving top 100 of the present invention, as shown in FIG. 6, the four through holes 15 of the first member 10 have shapes and arrangement positions of the outer peripheral wall surfaces 25 of the four cylinders of the second member 20. When the entire first member 10 moves relative to the second member 20, the four through-holes of the first member 10 are assembled so as to be smooth and tight. 15 rises along the outer peripheral wall surface 25 of the four cylinders of the second member 20 as a guide. Here, compared with the processing accuracy of the female screw 32 formed on the third member and the male screw 16 formed on the first member, the outer peripheral wall surface 25 of the four cylindrical bodies of the second member 20 is accurately It is easy to process vertically and has high processing accuracy, and the inner peripheral wall surfaces of the four through-holes 15 of the first member 10 are easy to process accurately vertically and have high processing accuracy. It is possible to move in the vertical direction relative to 10 and the second member 20.

Originally, since the screw is screwed, a certain amount of play is inevitably required, and it is difficult to increase the accuracy of the screwing direction of the screw. However, the water-saving top 100 of the present invention can be used as a kind of guide by moving both along the outer peripheral wall surface of the cylindrical body and the inner peripheral wall surface of the opening that are easy to obtain processing accuracy more easily. The accuracy of direction control can be obtained at a low cost.
With such a guide function, the metal plate 14 is moved relatively in parallel with the axis of the cylindrical body 24 by the movable mechanism 130, so that the accuracy of the movement direction control is increased.

  As the disc body 11 of the first member moves relatively upward with respect to the mouth 21 on the mortar of the second member, water is saved by the water pressure supplied from the water tap 200 as shown in FIG. A water flow is formed inside the top 100.

  Hereinafter, the flow of the water flow inside the water-saving piece 100 and the present configuration example will explain that foam water is formed and flows out from the water-saving piece 100 as a result.

  By adjusting the movable mechanism 130, the width of the gap 111 of the water flow forming part 110 is adjusted to the mouth 21 on the mortar of the second member of the disk member 11 of the first member, thereby forming a circular slit. Yes. The water flow struck out from the gap 111, which is a circular slit, becomes a circular film-shaped water flow film (circular water flow film 210).

  When a water flow is made to flow through the gap 111 of the water flow forming unit 110, a circulating water flow film 210 is formed. However, the circulating water flow film 210 becomes a three-dimensional water flow film continuous in the rotating direction, and the water flow film forms an inner space of the circulating water flow film 210. And the outer space are separated, and in this configuration example, the inner space is a sealed space in which airtightness is maintained. In this configuration example, as shown in FIG. 7B, the shape of the circulating water flow film 210 formed is a substantially inverted truncated cone.

  In addition, the water saving effect is also obtained by the circulating water flow film forming unit 210. As a result of reducing the amount of water discharged in the gap 111, a water-saving effect is obtained. In the water-saving top 100 of the present invention, water discharged from the water-saving top 100 of the present invention with respect to the actual amount of water by entraining a large amount of air in the water flow to form foam water having a large air content. The volume of the appearance increases, and the user's feeling of water use is not reduced.

  Here, although it is a place where the circulating water flow film 210 is formed, as shown in FIG. 7A, the internal space is always filled with air even when a water flow is formed and the water-saving piece 100 is in use. It is an air cavity in which a state is formed. The air cavity is a space filled with air provided in the middle of the water flow pipe as a place where the circulating water flow film 210 is formed. Even in a state where the water flow of the circulating water flow film 210 flows, the space filled with air is maintained. In this configuration example, the upper portion is constituted by the outer wall surface of the cylindrical body 13 of the member 10 and the inner peripheral wall surface of the mouth 21 on the mortar of the member 20, and the lower portion is constituted by the inner wall surface of the cylindrical body 24 and the upper surface of the umbrella-like body 26. The air space is an air cavity.

  In the air cavity, a conduction hole 12 is provided at a position located inside the circulating water flow film 210 to be formed, and air is supplied from outside air. Even when the air-saving piece 100 is in use, the air-filled state is always formed.

  Here, the circulating water flow film 210 is in a state as shown in FIG. 7B, but is brought into contact with the umbrella-like body 27 serving as the circulating water flow film contact body and is smoothly spread in the outer peripheral direction. The circulating water film abutting body is disposed on the lower surface of the circulating water film 210 in the air cavity space, and changes the direction of the water flow of the circulating water film 210. In this configuration example, the position and angle are adjusted so as to change the circulating water flow film 210 so as to expand to the peripheral side. In this configuration example, the umbrella-like body 26 of the member 20 is a circulating water film contact body. For example, the position is a position where the upper surface of the umbrella touches the position where the lower end of the circulating water flow film 210 that has been driven comes into contact, and the angle is gently along the rotating water flow film 210 that is in contact with the upper surface of the umbrella. The angle is such that the film 210 spreads outward from the center side so as to expand to the peripheral side.

  Next, foam water generation means formed in the water saving top 100 will be described. The foam water generation means reduces the air pressure at a location where the sealed space is expanded by changing the direction of the water flow of the circulating water flow film 210, and generates foam water by entraining air into the circulating water flow membrane 210 at that location. . The mechanism by which the foam water is generated by the foam water generation means will be described.

  FIG. 7A is a diagram showing a state in which a water flow is made to flow from the water discharge pipe 200 to the water-saving piece 100 shown in FIG. As in FIG. 1, the internal water flow is shown in a vertical cross section so that it can be easily understood. The flow of water flow, the flow of air, and the foamed water formed are shown typically.

  Although the air facing the circulating water flow film 210 is entrained by the accelerated water flow launched from the gap 111 flowing downstream vigorously, as shown in FIG. The air is drawn into the circulating water flow film 210 at a location where the water flow of the circulating water flow film 210 is in contact with the umbrella-like body 26 that is the rotating water flow film contact body, and foam water containing a large amount of air is formed. Since air is driven from the inner surface into the circular water flow film in a state of spreading in a thin film shape, an effect that air bubbles are uniformly diffused in the water flow film is obtained. As a result, high-quality foam water can be generated.

Here, since the conduction hole 12 is provided in the sealed space inside the circulating water flow film 210, when the pressure in the sealed space inside the circulating water flow film decreases, the pressure in the vicinity of the conduction hole 12 also decreases. Outside air is supplied from the passage 27 through the conduction hole 12.
When the circulating water flow film 210 expands in the outer peripheral direction at the lower part, the internal space is expanded. When the internal space is expanded, the air pressure drops rapidly in the vicinity. In this way, the air in the internal space is driven vigorously into the place where the atmospheric pressure drops rapidly. Since it is originally formed as a thin water flow film, a large amount of air is included when the air in the internal space is vigorously driven into the water flow film. That is, it becomes high-quality foam water containing a large amount of fine bubbles.

  In the conventional foam water generation mechanism, air is often drawn from a conduction hole provided in the wall surface of a water flow pipe filled with a water flow. In addition, an air cavity filled with air is provided, and a circulating water flow film 210 is formed in the air cavity to form a sealed space in which airtightness is maintained by the water film. This is a new concept technology that drives air into the water flow film vigorously due to a decrease in atmospheric pressure due to a change in direction. Moreover, since air is driven from the inside into the water that has spread in the form of a thin film in a space filled with air, it is possible to generate foam water having a high air content and high quality.

  In addition, as the speed of the accelerated water flow increases, the pressure drop due to the change in direction of the circulating water flow film 210 increases, so the speed of the air driven into the water flow film also increases and the mixing with the air is further promoted. In addition, the air driven into the inside from the side of the accelerated water flow diffuses into the water flow and becomes uniform and fine air bubbles.

Foam water that has passed through the umbrella-shaped body 26 that is a circulating water flow film contact body flows out of the cylindrical body 24. In addition, the umbrella body 26 which is a circulating water flow film contact body provides an effect (speed adjustment effect) in which the speed of foam water in an accelerated state is weakened to an appropriate speed for hand washing and guided to the downstream side. In addition, the diameter of the foamed water is expanded by the angle of the umbrella 27, and an effect (water diameter adjustment effect) that the diameter of the foamed water is expanded to an appropriate diameter for hand washing is obtained. Is adjusted.

  Here, it is preferable that the position, shape, and area of the cylindrical body 24 from which the foam water flows out is appropriately reduced, and the airtightness inside the sealed space is maintained while the foam water flows out. The foam water generated in the sealed space flows out from the cylindrical body 24. However, if the foam water flows out in the lower part of the umbrella-like body 26 in a state occupied by the entire surface, the outside air does not flow back into the sealed space. The sealed space is not directly connected to the outside air. In this way, by making the sealed space and the outside air not flow backward through the cylinder 24, the airtightness inside the sealed space can be maintained while the foam water flows out of the sealed space.

  Inventor Masaaki Takano has conducted extensive research and has confirmed in experiments that when the air in the internal space is vigorously driven into the circulating water flow film, it becomes high-quality foam water containing a large amount of fine bubbles. ing.

Next, the idea that the structure of the movable part does not come into contact with water will be described.
The structure of the water-saving top 100 of the present invention shown in the present embodiment is divided into an internal space submerged structure that serves as a passage for the water flow and the accelerated water flow, and a non-internal space submerged structure that does not touch the water flow and the accelerated water flow.
As shown in FIG. 7, the movable mechanism 130 and the guide portion 140 composed of the outer peripheral wall surface 25 and the through hole 15 of the cylinder belong to the non-interior space water-immersed structure, so that they do not touch water. ing.

Thus, even when the movable mechanism 130 and the guide part 140 are not in contact with the internal water, but in a non-interior space flooded structure that is not in contact with water, that is, even when a water flow is made to flow in the water-saving top 100, Since it is a structure that does not come into contact with water, it does not easily deteriorate due to deposits called rust or corrosion of rust, and the member can be moved in a good state.
If it is in a state where it is always in contact with water, deposits called so-called scales may adhere to the surface of the metal or may be corroded by rust, etc. If so, you will not cause such a problem.

It will be understood that various modifications can be made without departing from the scope of the invention. Therefore, the technical scope of the present invention is limited only by the description of the appended claims.
For example, the movable mechanism is a screw mechanism, but may be another movable mechanism.
Further, for example, in the above description, the guide portion is configured by four through holes provided in the first member and an outer peripheral wall surface of the cylindrical body of the second member that is passed through the four through holes. The principle of the present invention can be applied as long as the movement control is performed along some wall surface of the first member and some wall surface of the second member.

Industrial application fields

  The present invention is not limited to its use, as long as water comes out such as a water faucet for laboratories, a water faucet for washing eyes in a pool, a shower, etc. Function can be applied.

Claims (5)

A water-saving top that saves water discharged from a water discharge pipe,
A water flow forming portion provided with a gap serving as a passage for water flow inside, and an accelerated water flow is launched downstream from the gap,
A cylindrical body for flushing out the accelerated water stream launched from the water stream forming part;
The water-saving piece is composed of at least a first member provided with the cylindrical body and another second member, and a movable mechanism for relatively moving the first member and the second member. When,
Aside from the movable mechanism, a guide portion that guides the first member and the second member so as to move in the same direction as the moving direction of the movable mechanism, along with the wall surfaces of the second member,
A through hole is provided in the first member so as to penetrate the cylindrical body of the second member, and the guide portion includes an inner peripheral wall surface of the through hole of the first member and the second member. It guides to move in the same direction as the moving direction of the movable mechanism, along the outer peripheral wall surfaces of the cylindrical body of the member, and the first member and the second member of the movable mechanism A water-saving piece that supports the relative movement direction to be accurately guided by the guide portion. An air cavity that is provided in the middle of a water flow pipe as a passage location of the accelerated water flow, and is maintained in a state where air is filled even when the accelerated water flow flows;
An air passage having a conduction hole for conducting outside air to the air cavity;
The water-saving of Claim 1 provided with the foam water production | generation means which forms foam water by making the air blown in in the said air cavity from the said conduction hole involve with respect to the said acceleration water flow, and makes an outflow water flow out as foam water. Top.   When the water-saving top structure is classified into an internal space submerged structure that serves as a passage for the water flow and the accelerated water flow, and a non-internal space submerged structure that does not touch the water flow and the accelerated water flow, the movable mechanism and the cylinder The water-saving top according to claim 2, wherein an outer peripheral wall surface of the body and the guide portion belong to the non-internal space flooded structure, and the structure does not touch water.   There are a plurality of the cylinders, and a plurality of cylinders that divert and flow out the accelerated water flow launched from the water flow forming unit, and a plurality of the guide parts are provided corresponding to the plurality of the cylinders. The water-saving top according to any one of claims 1 to 3. The guide portion is a metal plate provided with a through hole so as to correspond to the cylindrical body , the through hole has an inner peripheral wall along the outer peripheral wall of the cylindrical body , and the metal plate is the through hole. 5. The apparatus according to claim 1, wherein the cylindrical body is disposed so as to pass through the hole, and the movable mechanism moves the metal plate relatively in parallel with an axis of the cylindrical body. The water-saving top described.

Images