JP6549916B2 - Water saving valve - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a water saving valve which is attached to an outlet side pipe of a faucet, a root of a shower head or the like for the purpose of water saving.

  There is a water-saving valve attached to the outlet pipe of the faucet for the purpose of water saving of tap water. The water-saving valve usually has a portion (hereinafter referred to as a throttling portion) in which the area of the flow path (water channel) is narrowed, and the throttling portion suppresses the water amount to save water. The water-saving valve includes a fixed type in which the area of the throttling portion can not be adjusted, and a water control valve for flow rate adjustment in which the area of the throttling portion can be adjusted.

  The water control valve for flow rate adjustment also has a type that can automatically change the area of the throttling part in response to water pressure and automatically adjust the discharge flow rate (see, for example, Patent Document 1), a type that can change the area of the throttling part (See, for example, Patent Document 2).

  Although the water-saving valve described in Patent Document 1 is a water-saving valve in which a spherical valve body automatically changes its position in response to water pressure, it is pointed out that vibration or sound is generated for this type of water-saving valve . The water-saving valve described in Patent Document 2 is composed of an inner cylinder, an outer cylinder and an adjustment cylinder, and the area of the water flow hole is increased or decreased by changing the position of the adjustment cylinder with respect to the inner cylinder. The clearance area between the inner cylinder and the outer cylinder is increased or decreased by changing the position of the cylinder, and the amount of water saving is adjusted by these.

Japanese Utility Model Application Publication No. 5-19743 JP, 2002-201688, A

  The amount of water discharged from the faucet depends on the user's preference and habits, so in the case of a water-saving valve of the type where the area of the throttling part can be changed, the area of the throttling part is changed by trial and error You need to find

  The water-saving valve described in Patent Document 2 has two places, the area corresponding to the throttling part, the area of the water flow hole, and the space area between the inner cylinder and the outer cylinder, so it is difficult to know which one should be adjusted. Further, the area of the water flow hole and the area of the gap between the inner cylinder and the outer cylinder can be increased or decreased by changing the screwing state, but it is not immediately known how much tightening or loosening should be done. Because of this it takes time to find out the amount of water you like.

  An object of the present invention is to provide a water-saving valve which can adjust the water-saving amount easily and reliably.

In the present invention, an inner piece having a weir at the upper part of the main body and provided with a through hole serving as a water channel, a cylindrical housing portion for receiving the main body of the inner member, and a through hole serving as a water channel at the lower end A water control valve having a bottom plate portion provided with the above and an outer piece provided with a weir at the upper end of the housing portion, the inner piece being fitted into the outer piece and used, provided in the inner piece The through hole is an inclined hole provided at a position where the center of the upper end is on the axis and the center of the lower end is offset from the axis, and the center of the upper end is on the axis The center of the lower end is an inclined hole provided on the shaft center at a position eccentric from the above, and when the inner and outer pieces are fitted into the outer piece, the inner and outer pieces are circumferentially arranged with respect to the outer piece comprising a fixing means for fixing at a predetermined position in a direction, said fixing means includes a projection provided on the main body outer wall of the inner frame, the housing portion of the outer frame Vignetting and consists of a recess in which the protrusion is fitted, the predetermined position is provided with a plurality of, the inner piece is water saving, wherein the possible variable mounting position relative to the outer frame via the fixing means It is a valve.

  In the water-saving valve of the present invention, since the through holes serving as the water channels provided in the inner and outer pieces are both inclined with respect to the axial center, and these inclination directions are set opposite to each other. The area of the water channel at the boundary between the inner and outer pieces can be reliably changed by changing the position in the circumferential direction when the outer piece is fitted. At this time, since the circumferential position of the inner piece with respect to the outer piece is set at a plurality of positions in advance by the fixing means, adjustment of the water saving amount can be easily and surely performed, and the favorite water amount can be found out. It does not take time.

  In the water-saving valve of the present invention, the fixing means can change the mounting angle of the inner piece with respect to the outer piece in the circumferential direction at 45 ° pitch, and the area of the water channel at the boundary between the inner piece and the outer piece It is characterized in that 5 patterns can be changed.

  According to the present invention, the area of the water channel at the boundary portion between the inner piece and the outer piece which is to be the throttling portion can be changed by 5 patterns, so that the user can easily find the desired water amount.

  In the water-saving valve of the present invention, a mark indicating a circumferential position when the inner piece is fitted into the outer piece is provided at the ridge of the inner piece and the ridge of the outer piece.

  According to the present invention, a mark indicating the position in the circumferential direction when the inner piece is fitted into the outer piece is provided, which is easy to use and enables adjustment of the water saving amount to be performed easily and reliably.

In the water-saving valve of the present invention, before the body of the SL in piece has a cylindrical body shape, the projection is a total of four plate-like body attached with parallel 90 ° pitch axis, the recess, It is a vertical groove provided from the weir of the outer piece to the housing portion, and the vertical grooves are provided in a total of eight places at a pitch of 45 ° in the circumferential direction.

  The fixing means can change the circumferential position of the inner piece with respect to the outer piece reliably while having a simple structure. In the case of a water-saving valve in which the area of the throttling part is changed using a screw mechanism, there is a concern that the screwing state changes due to vibration etc. during use, and the area of the throttling part changes. In addition, the surface of the diaphragm does not change during use and can be used safely.

  The water saving valve of the present invention further has a cylindrical packing for fixing the water saving valve to the pipe, and when the inner piece is fitted into the outer piece, a part of the plate-like body receives the outer piece. The packing is resilient and is mounted so as to cover the receiving part of the outer piece in which the inner piece is fitted. At this time, the packing protrudes to the outside of the receiving part of the outer piece. It is characterized in that the plate-like body of the inner piece as well as the plate-like body of the inner piece are brought into pressure contact with the accommodating portion of the outer piece.

  According to the present invention, the packing is brought into pressure contact with the outer pieces in a state in which the inner pieces are inserted into the outer pieces, so that the state of the inner pieces inserted into the outer pieces can be maintained. In particular, even if vibration occurs during use, the state of the inner piece fitted in the outer piece can be maintained, and therefore, it can be used with ease. Further, in the present invention, since the packing for fixing the water-saving valve to the pipe is used to hold the state of the inner piece inserted into the outer piece, the number of parts is reduced, the structure is simplified and the cost is reduced. Can.

  According to the present invention, it is possible to provide a water saving valve capable of adjusting the water saving amount easily and reliably. The water-saving valve of the present invention is highly reliable and easy to use, in addition to being able to adjust the amount of water saving simply and reliably.

They are the perspective view which shows the external appearance of the water valve 1 of 1st Embodiment of this invention, and the perspective view which shows the state which removed the packing 31 from the water valve 1. FIG. They are the perspective view which looked at the inner piece 11 which comprises the water valve 1 of FIG. 1 from the downward direction, a top view, and a front view. They are the perspective view which looked at the outer piece 21 which comprises the water valve 1 of FIG. 1 from upper direction, a top view, and a front view. They are the perspective view which looked at the packing 31 which comprises the water valve 1 of FIG. 1 from upper direction, a top view, and a front view. It is a figure for demonstrating the relationship between the attachment position with respect to the outer piece 21 of the inner piece 11 which comprises the water valve 1 of FIG. 1, and the area of the flow path of the boundary part. It is a figure which shows the example of use of the water valve 1 of FIG.

  FIG. 1 is a perspective view showing the appearance of a water valve 1 according to a first embodiment of the present invention and a perspective view showing a state in which the packing 31 is removed from the water valve 1. 2A is a perspective view of the inner piece 11 constituting the water-saving valve 1 as viewed from below, FIG. 2B is a plan view and FIG. 2C is a front view, and FIG. 4) a perspective view, (b) a plan view and (c) a front view, FIG. 4 is a (a) perspective view of the packing 31 as viewed from above, (b) a plan view and (c) a front view. FIG. 5 is a view for explaining the relationship between the attachment position of the inner piece 11 constituting the water saving valve 1 to the outer piece 21 and the area of the flow passage at the boundary, and FIG. 6 is a usage example of the water saving valve 1 FIG.

  The water-saving valve 1 according to the first embodiment of the present invention is a water-saving valve attached to an outlet side pipe (pipe) of a faucet, a root of a shower head, etc. for water saving purpose. And a packing 31.

  The inner piece 11 has a disc-shaped weir 13 at the upper end of a cylindrical main body 12 and is provided with a through hole 14 which is a water channel. The through hole 14 is an inclined hole in which the center of the upper end 15 is on the axis O and the center of the lower end 16 is eccentric from the axis O, and the cross-sectional shape is a circle. The material of the inner piece 11 is not limited to a specific material, and materials that do not rust such as plastics, metal materials such as stainless steel, and composite materials can be suitably used. The same applies to the outer piece 21 in this respect.

  A total of four plate-like members 17 are provided parallel to the axis O at a pitch of 90 ° in the circumferential direction on the outer wall surface of the main body 12 of the inner piece 11. The four plate-like members 17 have the same shape, and are provided such that the upper end is in contact with the lower surface of the crucible 13 and the lower end is flush with the lower end of the main body 12. In the inner piece 11 of the present embodiment, the main body 12 and the plate-like body 17 are integrally formed. However, the main body 12 and the plate-like body 17 are separately manufactured. May be fixed.

  The plate-like body 17 functions as a claw for fixing the inner piece 11 fitted in the outer piece 21. Specifically, when the inner piece 11 is fitted in the outer piece 21, the plate-like body 17 is fitted in the vertical groove 28 provided in the outer piece 21. Thereby, the inner piece 11 and the outer piece 21 are non-rotatably locked. As described above, since the plate-like member 17 functions as a claw to be fitted into and locked to the vertical groove 28, the height of the plate-like member 17 is within the range that can be locked to the vertical groove 28. It may be shorter.

  The crucible 13 is a disk-shaped member and is located at the upper end of the cylindrical main body 12. In the outer peripheral portion of the weir 13, a notch 18 which is a mark indicating the positional relationship between the inner piece 11 and the outer piece 21 is provided.

  The outer piece 21 has a cylindrical receiving portion 22 for receiving the main body 12 of the inner piece 11. At the lower end of the receiving portion 22, a bottom plate portion 23 is provided so as to close the bottom of the receiving portion 22. Further, at the upper end of the accommodation portion 22, a weir 24 is provided. In the outer piece 21 of the present embodiment, the housing portion 22 and the bottom plate portion 23 are integrally formed, but the housing portion 22 and the bottom plate portion 23 are separately manufactured, and the bottom plate portion 23 is formed at the bottom portion of the housing portion 22. May be fixed.

The inner diameter _{d 2} of the housing portion 22 is slightly larger than the outer diameter _{d 1} of the main body 12 of the inner frame 11, height _{H 2} of the accommodating portion 22, the same as the height _{H 1} of the main body 12 of the frame 11 is there. Therefore, when the inner piece 11 is fitted to the outer piece 21, the main body 12 of the inner piece 11 is fitted into the accommodation portion 22 of the outer piece 21 with almost no gap.

The bottom plate portion 23 is provided with a through hole 25 serving as a water channel. The through hole 25 is an inclined hole in which the lower end 27 is provided on the axial center O at a position where the center of the upper end 26 is eccentric from the axial center O. The cross-sectional shape of the through hole 25 is a circle, and the inner diameter d ₅ is the same as the through hole 14. The through holes 14 provided in the inner piece 11 and the through holes 25 provided in the outer piece 21 are the attachment positions of the inner piece 11 to the outer piece 21 when the inner piece 11 is fitted into the outer piece 21 It is provided to communicate even at any position).

  A total of eight longitudinal grooves 28 are provided parallel to the axis O at a pitch of 45 ° in the circumferential direction so as to penetrate the wall surface in the housing portion 22 of the outer piece 21. The eight longitudinal grooves 28 have the same shape, and the upper end thereof penetrates the weir 24 and the lower end is flush with the lower end of the housing 22 (the upper end of the bottom plate). The longitudinal groove 28 is provided at the portion of the weir 24 so that the plate-like body 17 of the inner piece 11 can be fitted therein.

Distance L ₂ between both ends of the opposing longitudinal grooves 28 in the portion of the collar 24 is slightly larger than the distance L ₁ between the ends of the opposed plate-like member 17, the width T ₂ of the flutes 28, the plate-like body slightly larger than the thickness _{T 1} of 17. For this reason, the inner piece 11 can be fitted into the outer piece 21 from above. Distance L ₁ between the ends of the opposed plate-like body 17 is set larger than the outer diameter d ₃ of the housing portion 22, when fitting the inner frame 11 to outer frame 21, a portion of the plate-like body 17 Protrudes from the vertical groove 28 (see FIG. 1 (b)). Thus, the circumferential positions of the inner piece 11 and the outer piece 21 are fixed.

  The weir 24 is a disk-like member and is located at the upper end of the housing 22. In the outer peripheral portion of the weir 24, a notch 29 which is a mark indicating the positional relationship between the inner piece 11 and the outer piece 21 is provided.

  In the present embodiment, when the inner piece 11 is fitted to the outer piece 21 so that the two notches 18 and 29 coincide with each other, the angle of the inner piece 11 with respect to the outer piece 21 becomes 0 ° It is provided as. The angle of 0 ° is a position where the lower end 16 of the through hole 14 and the upper end 26 of the through hole 25 completely coincide with each other (see FIG. 5B).

  The packing 31 is provided with a weir 33 at the upper end of the cylindrical main body 32, the weir 33 also has an opening of the same size as the inner diameter of the main body 32, and the packing 31 penetrates in the axial center O direction There is. Lateral grooves 34 are provided on the outer peripheral surface of the main body 32 at regular intervals in the height direction. In the present embodiment, four lateral grooves 34 are provided.

The packing 31 is made of silicone rubber including the collar 33 and has elasticity. The inner diameter d ₄ of the packing 31 is slightly larger than the housing outer diameter d ₃ of the outer frame 21 is set to be slightly smaller than the distance L ₁ between the ends of the opposed plate-like body 17 of the inner frame 11 .

When the packing 31 is attached to the outer piece 21 in which the inner piece 11 is fitted, the packing 31 is pushed and spread by hand, and is fitted from below the outer piece 21. Because the distance L ₁ between the ends of the opposed plate-like body 17 of the inner frame 11 at this time is slightly larger than the inner diameter d ₄ of the packing 31, the packing 31 is spread locally pressed at the portion in contact with the plate-like body 17 . As a result, the portion of the packing 31 not in contact with the plate-like body 17 enters inside. When the packing 31 is attached to the outer piece 21 in which the inner piece 11 is fitted by these, the packing 31 is in pressure contact with the outer peripheral portion of the accommodation portion 22 of the outer piece 21 and the plate-like body 17 protruding from the accommodation portion 22 of the outer piece 21. Do. As a result, the inner piece 11 does not fall off the outer piece 21. Further, water leakage from the vertical groove 28 of the outer piece 21 can be prevented.

  Next, in a state in which the inner piece 11 is fitted into the outer piece 21, the attachment position (angle) of the inner piece 11 to the outer piece 21 and the boundary portion between the lower end of the inner piece 11 and the upper end of the bottom plate portion 23 of the outer piece 21 The relationship between the area of the water channel and the area of the water channel will be described using FIG. The attachment angle of the inner piece 11 with respect to the outer piece 21 refers to an angle in the circumferential direction. The area of the water channel at the boundary between the lower end of the inner piece 11 and the upper end of the bottom plate portion 23 of the outer piece 21 is the area of the portion where the through hole 14 and the through hole 25 collide. The area of this portion is the portion of the water channel of the water-saving valve 1 where the area is the smallest, and is the throttling portion.

  FIG. 5A is a cross-sectional view schematically showing a state in which the inner piece 11 is fitted into the outer piece 21. In this state, the angle between the inner piece 11 and the outer piece 21 is 0 °. 5 (b) is the area of the water channel at the boundary between the lower end of the inner piece 11 and the upper end of the bottom plate 23 of the outer piece 21 when the fitting angle of the inner piece 11 with respect to the outer piece 21 is changed at 45 ° pitch. FIG. The mounting angle of the inner piece 11 with respect to the outer piece 21 can be changed at a 45 ° pitch because the vertical grooves 28 provided in the housing portion 22 of the outer piece 21 have a 45 ° pitch.

  In the case of 0 ° in FIG. 5B, the lower end 16 of the through hole and the upper end 26 of the through hole completely coincide, and the area of the boundary does not decrease. When the inner piece 11 is rotated 45 degrees counterclockwise while the outer piece 21 is fixed from the 0 ° state, the area of the boundary decreases as compared with the 0 ° arrangement. Similarly, at 90 °, 135 °, and 180 °, the area of the boundary decreases as the angle increases, and becomes minimum at 180 °. When the angle further increases to 225 ° and 270 °, the area of the boundary portion will gradually increase from now on. The area of the boundary between the mounting angle 135 ° and the mounting angle 225 ° is the same.

  As described above, in the case of the water valve 1 in which the mounting angle of the inner piece 11 with respect to the outer piece 21 can be changed at a 45 ° pitch, the area of the narrowed portion can be changed by 5 patterns. Therefore, the amount of water saving can be changed in five patterns by using the water saving valve 1.

When the mounting angle of the inner piece 11 with respect to the outer piece 21 is changed at 45 °, the change in the area of the diaphragm is determined by the inner diameter d _{5 of} the through holes 14 and 25 and the inclination angles of the through holes 14 and 25. Although an example of the area of the diaphragm is shown, the area of the boundary where the attachment angle of the inner piece 11 to the outer piece 21 is 0 ° is S ₀ , and the attachment angle of the inner piece 11 to the outer piece 21 is 180 °. Assuming that the area of the part is S ₁ , S ₁ / S ₀ = 0.35 can be obtained. Moreover, in the case of the water-saving valve 1 which can change the attachment angle with respect to the outer piece 21 of the inner piece 11 with a 45 degree pitch, as a result of experiment, it was possible to reduce water volume in 30 to 60% of range.

  In the present embodiment, the notch 18 and the notch 24 are provided on the collar 13 and the collar 24 as marks that allow the attachment angle of the inner piece 11 to the outer piece 21 to be immediately recognized from the outside. For example, it may be a number. Further, the positions at which the marks are provided may not be the ridges 13 and 24. Further, in the present embodiment, when the inner piece 11 is inserted into the outer piece 21, the notches 18, 29 are provided as marks at positions where the lower end 16 of the through hole 14 and the upper end 26 of the through hole 25 completely coincide. However, it is not limited to this position. For example, when the inner piece 11 is fitted into the outer piece 21, a mark may be provided at a position of 180 ° (see FIG. 5B), which is the position where the area of the water channel is the smallest. Moreover, you may provide the some mark which shows a water saving rate.

  The usage example of the said water-saving valve 1 was shown in FIG. The water saving valve 1 shown in FIG. 1A is attached to a connecting portion between a water faucet (valve) 101 and an outlet side pipe (pipe) 103. Since the water saving valve 1 is provided with a weir, the weir, more specifically, the lower surface of the weir 33 of the packing 31 is engaged with the pipe wall of the pipe 103. Thereby, the water saving valve 1 is sealed to the pipe 103 in a fluid tight manner. This can ensure water saving.

  As described above, in the water-saving valve 1, the through holes 14 and 25 serving as water channels provided in the inner piece 11 and the outer piece 21 are both inclined with respect to the axial center O, and these inclination directions are opposite to each other. Since it is set, the area of the water channel at the boundary between the inner piece 11 and the outer piece 21 can be reliably changed by changing the circumferential position (angle) when the inner piece 11 is fitted into the outer piece 21. can do.

  The circumferential position of the inner piece 11 with respect to the outer piece 21 is determined by the plate-like body 17 provided on the inner piece 11 and the longitudinal groove 28 provided on the outer piece 21 in which it is fitted, that is, the throttling portion in advance Because multiple areas are prepared, it is easy and reliable to adjust the amount of water saving, and it takes less time to find out the amount of water you like. Further, since the vertical grooves 28 are provided at a total of eight positions at a pitch of 45 ° in the circumferential direction, the area of the throttling portion can be changed by five patterns, and the user can easily find the desired amount of water.

  The pipe shown in FIG. 6 is an S-type pipe, but the faucet pipe 103 may be a U-type, an L-type, a Z-type, a swan type or the like in addition to the S-type as is known. When the water-saving valve 1 is attached to the U-shaped pipe, the water-saving valve 1 has the weir 33 at the bottom, so there is a concern that the water-saving valve 1 may fall when attached or in use. The packing of the conventional water-saving valve can also be seen as having a longitudinal groove on the outer peripheral surface, but in such packing, since the direction of the groove matches the falling direction, the water-saving valve 1 falls during mounting or use Easy to do. On the other hand, since the packing 31 of the water-saving valve 1 is provided with the lateral groove 34 on the outer peripheral surface, it is difficult for the packing 33 to fall even if it is used with the weir 33 downward.

  When changing the area of the throttling portion using a screw mechanism regardless of the water saving valve described in Patent Document 2, it is necessary to take measures to prevent the screwing state from changing due to vibration or the like during use. However, the water-saving valve attached to the outlet side pipe etc. of the faucet is small. As an example, the size of the water-saving valve is that the diameter of the weir is 15 mm, the outer diameter of the packing body is 11 mm, and the height is about 12 mm. So complicated mechanisms can not be adopted. On the other hand, in the water-saving valve 1, the plate-like member 17 provided in the inner piece 11 is fitted into the vertical groove 28 provided in the outer piece 21, and the packing 31 further causes the inner piece 11 and the outer piece 21 to come off. Since the function does not occur, the area of the diaphragm does not change even if vibration occurs during use. The function of the packing 31 for preventing the inner piece 11 and the outer piece 21 from coming off is a characteristic portion not found in the conventional packing.

  Further, in the water-saving valve 1, since the through holes 14 and 25 serving as water channels (flow channels) provided in the inner piece 11 and the outer piece 21 are inclined in opposite directions to each other, a swirling flow occurs. For this reason, even if the amount of water decreases, the user can feel the force of water, and even if the water-saving valve 1 is attached, it can be used without discomfort.

  As mentioned above, although the water-saving valve concerning this invention was demonstrated using the water-saving valve 1 of 1st Embodiment, the water-saving valve concerning this invention is not limited to the said embodiment, It changes in the range which does not change a gist. Can be used.

  In the water saving valve 1 according to the present invention, fixing of the position when the inner piece 11 is fitted to the outer piece 21 is performed by the plate-like body 17 of the inner piece 11 and the vertical groove 28 provided in the outer piece 21. However, the outer shape of the main body 12 of the inner piece 11 and the inner shape of the accommodation portion 22 of the outer piece 21 may be a regular octagon, and the inner piece 11 may be fixed to the outer piece 21.

  In the above embodiment, the plate-like member 17 of the inner piece 11 is provided to protrude from the vertical groove 28 of the outer piece 21, but the plate-like member 17 of the inner piece 11 protrudes from the vertical groove 28 of the outer piece 21. Instead, it may be locked in the vertical groove 28. However, the outer shape of the main body 12 of the inner piece 11 and the inner shape of the accommodation portion 22 of the outer piece 21 are fixed as a regular octagon, and the plate-like body 17 of the inner piece 11 is protruded from the vertical groove 28 of the outer piece 21 In the case of the method in which the inner groove 11 is locked to the vertical groove 28, the packing 31 of the above-described form can not prevent the inner piece 11 from coming off the outer piece 21, so a separate measure is required.

  In the above embodiment, although four plate-like members 17 are provided on the inner piece 11, the number of the plate-like members 17 may be one, two, or eight as many as the number of the longitudinal grooves 28. However, when the number of the plate-like members 17 is one or two, particularly in the case of one, when the packing 31 is attached to the outer piece 21 into which the inner piece 11 is fitted, load is uniformly applied to the packing 31 Since there are not, the number of plate-like bodies 17 is preferably four. When the number of plate-like members 17 is eight, load is uniformly applied to the packing 31, which is preferable. However, the number of plate-like members 17 increases, leading to an increase in cost.

  In the water-saving valve of the above embodiment, although the attachment position of the inner piece 11 to the outer piece 21 can be changed at 45 ° pitch and the water saving amount can be changed by 5 patterns, the number of changes of the water saving amount is 4 patterns , May be six or more patterns. When the number of changes in the water saving amount is four patterns, a total of three plate-like members 17 of the inner piece 11 of the above embodiment are provided at a pitch of 120 °, and the number of vertical grooves 28 of the outer piece 21 is at a pitch of 60 °. A total of six places should be taken. When the number of changes in the water saving amount is seven patterns, a total of three plate-like members 17 of the inner piece 11 of the above embodiment are provided at a pitch of 120 °, and the number of the vertical grooves 28 of the outer piece 21 is a pitch of 30 ° And 12 places in total. If the number of changes in the amount of water saving can be increased, the amount of water saving can be set finely, but since the water-saving valve mounted on the pipe 103 of the faucet is small, the number of flutes 28 is limited in structure . Practically, the pattern of the number of changes in the amount of water saving shown in the above embodiment would be appropriate.

  In order to change the mounting position of the inner piece 11 to the outer piece 21 and to change the water saving amount, changing the mounting position of the inner piece 11 to the outer piece 21 makes the boundary portion (diaphragm portion) between the inner piece 11 and the outer piece 21 It is sufficient to change the area of Therefore, in the water storage valve 11 of the above embodiment, the through hole 14 may be provided parallel to the axial center O at a position eccentric to the axial center O. For example, in FIG. 5A, the through hole 14 may be provided in parallel to the axial center O from the lower end 16 of the through hole 14. Further, the center of the upper end 15 of the through hole 14 may be decentered from the axis O. Further, the center of the lower end 27 of the through hole 25 of the outer piece 21 may be eccentric from the axis O.

  Even if the center of the upper end 15 of the through hole 14 of the inner piece 11 and the center of the lower end 27 of the through hole 25 of the outer piece 21 deviate from the axis O, the attachment position (angle) of the inner piece 11 to the outer piece 21 is changed. Thus, the amount of water saving can be changed, but the positions of the upper end 15 of the through hole 14 of the inner piece 11 and the lower end 27 of the through hole 25 of the outer piece 21, that is, the inlet and outlet of the water valve 1 are eccentric. Since the flow of water before and after the water-saving valve 1 also drifts, the center of the upper end 15 of the through hole 14 of the inner piece 11 and the center of the lower end 27 of the through hole 25 of the outer piece 21 should be provided on the axis O preferable.

  Further, in FIG. 5A, when the through hole 25 is provided from the upper end 26 of the through hole 25 in parallel to the axial center O, the through hole 25 does not become an inclined hole. In the case of such a through hole 25, it is difficult to feel the momentum of water since no swirling flow occurs.

  Although the example which attaches the water saving valve 1 to the connection part of the water faucet (valve) 101 and the exit side pipe (pipe) 103 was shown in the said embodiment, the attachment location of a water saving valve may be other places. Similar to conventional water-saving valves, they can be mounted and used at the junction of Java head and hose.

  While the preferred embodiments have been described above with reference to the drawings, those skilled in the art will readily recognize various changes and modifications within the obvious scope in view of the present specification. Accordingly, such changes and modifications are to be construed as being within the scope of the invention as defined in the appended claims.

DESCRIPTION OF SYMBOLS 1 water-saving water valve 11 inner piece 12 main body 13 through 14 through hole 15 upper end 16 lower end 17 plate-like body 18 notch 21 outer piece 22 accommodation portion 23 bottom plate portion 24 through 25 through hole 26 upper end 27 lower end 28 longitudinal groove 29 notch 31 packing 32 Body 33 鍔 34 Horizontal groove O axis

Claims (5)

An inner piece having a weir at the top of the main body and provided with a through hole to be a water channel,
A cylindrical accommodating portion for accommodating the main body of the inner piece, a bottom plate portion provided with a through hole serving as a water channel at the lower end of the accommodating portion, and an outer piece provided with a weir at the upper end of the accommodating portion;
A water-saving valve which has the inner piece fitted into the outer piece and is used,
The through hole provided in the inner piece is an inclined hole provided at a position where the center of the upper end is on the axis and the center of the lower end is eccentric from the axis,
The through hole provided in the outer piece is an inclined hole in which the center of the lower end is provided on the axial center at a position where the center of the upper end is offset from the axial center,
The inner and outer pieces are provided with fixing means for fixing the inner piece to the outer piece at a predetermined circumferential position when the inner piece is fitted into the outer piece,
The fixing means includes a protrusion provided on the main body outer wall of the inner piece, and a recess provided in the receiving portion of the outer piece, into which the protrusion is fitted.
A water saving valve characterized in that a plurality of the predetermined positions are provided, and the mounting position of the inner piece with respect to the outer piece can be changed via the fixing means.   The fixing means can change the mounting angle of the inner piece with respect to the outer piece in the circumferential direction at a pitch of 45 °, and can change five patterns of the water passage area at the boundary between the inner piece and the outer piece. The water saving valve according to claim 1, characterized in that.   The water saving according to claim 1 or 2, wherein a mark indicating a circumferential position when the inner piece is inserted into the outer piece is provided on the ridge of the inner piece and the ridge of the outer piece. valve. Before SL in the body of the piece has a cylindrical body shape, the projection is a total of four plate-like body attached with parallel 90 ° pitch axis,
The recess is a longitudinal groove provided from the ridge of the outer piece to the accommodation portion, and the longitudinal grooves are provided in a total of eight places at a pitch of 45 ° in the circumferential direction. The water saving valve according to any one of claims 3 to 10. Furthermore, it has a cylindrical packing for fixing the water-saving valve to the pipeline,
When the inner piece is fitted into the outer piece, a part of the plate-like body protrudes outside the accommodation portion of the outer piece,
The packing has elasticity, and is mounted so as to cover the receiving portion of the outer piece in which the inner piece is fitted. At this time, the packing is a plate-shaped body of the inner piece projecting to the outside of the receiving portion of the outer piece. saving valve according to any one of claims 1 to 4, characterized in that pressed against the housing portion of the outer piece including.

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