JP2015057539A - Shower head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shower head capable of improving drainage by easily suppressing dripping of droplets after the water stop.SOLUTION: A rib projecting to the upstream side with regard to a water running direction in a water discharge passage of a water discharge part 6, is arranged on the back side located on the body part 3 side of a water spray plate 17. Further, in the water discharge passage of the water discharge part 6, strainers 25a and 25b are arranged near the water spray plate upstream of the water spray plate with regard to a water running direction. Also, a strainer keep plate 27 is arranged upstream of the strainers with regard to a water running direction. In addition, the strainer is inserted between the rib and the strainer keep plate, and a gap for reserving the water is formed between the strainer and the water spray plate.

Description

  The present invention relates to a shower head.

  Conventionally, there has been a problem that water remaining in the shower head after water stoppage is dropped as water droplets. In particular, with regard to water spray plates and strainers installed in the middle of water discharge pipes, etc., it is likely to occur when the diameter of the holes formed in them is small. Ingenuity to improve is being studied.

  For example, in Patent Document 1 below, a photocatalytic material containing titanium oxide or the like is coated inside the holes of the watering plate, and a means for irradiating ultraviolet rays is disposed in the shower head. A strainer is produced by knitting a metal wire formed in the above, and an ultraviolet irradiation means is installed outside. By irradiation with ultraviolet rays, the inner surface of the hole is made hydrophilic in the watering plate, and the filament is made hydrophilic in the strainer, the contact angle of water becomes very small, the water spreads immediately after the water stops, the water flows out from the hole and the mesh, Water drainage is improved.

JP-A-10-76185

  However, in the watering plate and the strainer, irradiation with ultraviolet rays is indispensable for hydrophilic treatment, and it is necessary to incorporate ultraviolet irradiation means inside the shower head or install it outside. As a result, it is difficult to improve the drainage easily because the structure of the shower head and its surroundings needs to be complicated or redesigned.

  This invention is made | formed in view of the above situations, and makes it a subject to provide the shower head which can suppress dripping of the water drop after water stop simply, and can make a water drainage favorable.

  The present invention has the following features in order to solve the above problems.

  A first aspect of the present invention is a water discharge having a main body part in which a water flow channel is formed and a water discharge channel that is disposed at a downstream end portion that is located downstream of the main body unit in the flow direction and communicates with the water flow channel. A shower head in which a water spray plate in which a plurality of water spray holes are formed penetrating the front and back is disposed at the outlet of the water discharge passage in the water discharge portion, and located on the main body portion side of the water spray plate. A rib projecting upstream with respect to the direction of water flow in the water discharge path of the water discharge portion is disposed on the back surface side, and in the water discharge path of the water discharge portion, on the upstream side of the water spray plate with respect to the water flow direction and the water spray A strainer is disposed near the plate, and a strainer presser is provided upstream of the strainer with respect to the flow direction, and the strainer is sandwiched between the rib and the strainer presser. It is characterized in that a gap for water reservoir is formed in the water spray plates and the strainer.

  The second invention is characterized in that, in the feature of the first invention, the watering plate is made of a hydrophobic material, and the back surface of the watering plate has hydrophilicity.

  According to the first aspect of the invention, the strainer is sandwiched between the ribs by the strainer presser, and a gap for collecting water is formed between the strainer and the watering plate. The space for pooling water can be reliably formed. For this reason, the water remaining in the water discharge passage of the water discharge section after the water stop can be sufficiently accumulated and held in the gap for water accumulation, and dripping as water droplets from the water spray holes can be suppressed. Suppression of dripping of water droplets after water stoppage is easily realized, and water breakage is good.

  According to the second invention, in addition to the effects of the first invention, the watering plate is formed of a hydrophobic material, and the back surface of the watering plate has hydrophilicity. Water remaining in the water discharge channel of the water discharge part can be spread and held over the entire back surface of the water spray plate. The surface tension on the back surface of the water spray plate is reduced, and the water remaining in the water discharge path of the water discharge portion spreads in a thin layer or film form on the entire back surface of the water spray plate after water stoppage, and the back surface of the water spray plate Held on the side. Moreover, it is suppressed that the spread water is dripped as a water droplet from the watering hole. For this reason, the water remaining in the water discharge path of the water discharge section after the water stop can be reliably accumulated and held in the gap for water accumulation, and dripping of water droplets from the water spray holes is more sufficiently suppressed.

It is the disassembled perspective view which showed 1st Embodiment of the shower head of this invention. It is a perspective view of the shower head shown in FIG. It is sectional drawing and the expanded sectional view of the shower head shown in FIG. It is the disassembled perspective view which showed 2nd Embodiment of the shower head of this invention. It is the disassembled perspective view which showed 3rd Embodiment of the shower head of this invention.

  As described above, FIG. 1 is an exploded perspective view showing the first embodiment of the shower head of the present invention, and FIG. 2 is a perspective view of the shower head shown in FIG. 3 is a cross-sectional view and an enlarged cross-sectional view of the shower head shown in FIG.

  In the first embodiment, the shower head 1 includes a hollow main body 3 having a flow channel 2 formed therein, and a downstream located downstream of the main body 3 with respect to the flow direction indicated by an arrow in FIG. The water discharge part 6 which has the water discharge path 5a, 5b arrange | positioned by the edge part 4 and communicating with the flowing water path 2 is provided.

  With respect to the direction of water flow in the main body 3, the upstream end portion 7 located on the upstream side can be connected to the end of the water supply pipe A, and can supply water flowing through the water pipe to the water flow path 2 through the water supply pipe A. I can do it.

  The downstream end 4 of the main body 3 extends obliquely downward so as to change the flowing water direction from the horizontal direction to the obliquely downward direction. The downstream end 4 extending obliquely downward in this manner directs the shower spouted from the water discharger 6 to the front of the bathroom vanity, etc. so that hand washing and the like can be performed easily. It is possible to suppress the scattering of.

  A receiving part 8 for connecting the water discharge part 6 to the main body part 3 is disposed at the downstream end part 4 of the main body part 3. The receiving portion 8 has a cylindrical shape and is fitted inside the downstream end portion 4 with a packing or the like interposed therebetween. The outer peripheral portion of the receiving portion 8 is disposed slightly apart from the inner peripheral portion of the downstream end portion 4, and an annular groove 9 is formed between the outer peripheral portion of the receiving portion 8 and the inner peripheral portion of the downstream end portion 4. . Note that the cylindrical shape that the receiving portion 8 has is not limited to being truly a cylinder, but may be recognized as a cylinder when viewed as an overall shape, even though it is not truly a cylinder. Including things.

  A cylindrical water discharge socket 10 extending in the water flow direction is attached to the downstream end located on the downstream side with respect to the water flow direction in the receiving portion 8, and the water discharge socket 10 extends from the downstream end 4 of the main body portion 3 in the water flow direction. It protrudes. The water discharge part 6 is connected to the inside and the outside of the water discharge socket 10, and the water discharge part 6 is disposed at the downstream end 4 of the main body part 3. The definition of the cylindrical shape that is the shape of the water discharge socket 10 in the main building specification is the same as the definition of the shape of the receiving portion 8.

  The water discharger 6 includes a water spray cap 11 disposed on the outer periphery of the water discharge socket 10 and a water discharge plug 12 attached to the inside of the water discharge socket 10. The watering cap 11 is connected to the downstream end 4 of the main body 3 via the bush 13.

  The bush 13 has a cylindrical shape, and includes a thin leg portion 14 at an end portion on the main body portion 3 side. In such a bush 13, the leg portion 14 is inserted into the annular groove 9, is attached to the downstream end portion 4 of the main body portion 3, and is disposed outside the water discharge socket 10. In addition, an annular groove 15 that is recessed from the outside toward the inside is formed in the outer peripheral portion of the bush 13 at the downstream end portion located on the downstream side in the flowing water direction. The definition of the cylindrical shape that is the shape of the bush 13 in the present specification is the same as the definition of the shape of the receiving portion 8.

  The watering cap 11 has a cap-like shape, and an annular watering plate 17 is integrally disposed at one end of a cylindrical tube portion 16. The water spray plate 17 is formed with a plurality of water spray holes 18 penetrating the front and back. The water spray holes 18 are arranged in three rows concentrically with the annular water spray plate 17. The watering cap 11 is fitted around the bush 13 so that the packing 19 is inserted into the annular groove 15 of the bush 13, and is arranged on the outer periphery of the water discharge socket 10. Thus, the water spray plate 17 is disposed at the outlet of the water discharge channel 5 a located inside the water spray cap 11. In the present specification, the definition of the cylindrical shape that is the shape of the cylindrical portion 16 is the same as the definition of the shape of the receiving portion 8.

  The water discharge channel 5 a communicates with the water flow channel 2 of the main body 3 through the inside of the water discharge socket 10.

  In addition, a plurality of ribs 23 projecting upstream in the direction of water flow in the water discharge channel 5 a are also provided on the water spray plate 17 on the back surface 20 side located closer to the main body 3. The ribs 23 are arranged concentrically with the water spray plate 17 at a substantially central portion in the width direction of the annular water spray plate 17, and the interval between the adjacent ribs 23 is constant.

  The water discharge plug 12 has a cylindrical shape, and is fitted into and attached to the water discharge socket 10. The water discharge path 5 b located inside the water discharge plug 12 is also communicated with the water flow path 2 of the main body 3 through the water discharge socket 10. The definition of the cylindrical shape that is the shape of the water discharge plug 12 in the present specification is the same as the definition of the shape of the receiving portion 8.

  Moreover, in the water discharge plug 12, the flange part 24 extended outside is arrange | positioned in the edge part by the side of the outlet of the water discharge path 5b. By fitting the water discharge plug 12 into the water discharge socket 10, the flange portion 24 comes into contact with the inner peripheral edge portion of the surface 21 located farther from the main body portion 3 in the water spray plate 17, and prevents the water spray cap 11 from coming off. The watering cap 11 is connected to the water discharge socket 10.

  The watering cap 11 is provided with a lever 22 protruding outward on the outer peripheral portion of the cylindrical portion 16. The lever 22 facilitates the turning operation of the watering cap 11, and the water discharger 6 can select the water discharge from the water discharge paths 5 a and 5 b by the rotation of the watering cap 11 by operating the lever 22. It is said that. That is, when the water discharge socket 10 connected to the water spray cap 11 is rotated by the rotation operation of the water spray cap 11 and the flow path is switched, water is ejected from the water discharge path 5b located inside the water discharge plug 12, The shower head 1 realizes water discharge as a currant. On the other hand, when the communication between the water discharge channel 5b and the water flow channel 2 is interrupted along with the rotation of the water discharge socket 10, water is ejected from the water spray hole 18 through the water discharge channel 5a and a shower is realized.

  The water spray plate 17 is formed of a hydrophobic material that repels water. The hydrophobic material referred to in the present application includes a case where the material itself has a hydrophobicity with low wettability to water and an additive for hydrophobization, and the hydrophobicity is expressed in the entire material. Is included. In the present application, a material that is only partially hydrophobic by coating or the like is not included in the hydrophobic material. Such a hydrophobic material can be appropriately selected from materials that can be easily molded such as metals and resins in consideration of hydrophobicity. In the hydrophobic material, when water adheres, water droplets are formed in a spherical shape.

  On the other hand, the back surface 20 of the water spray plate 17 has hydrophilicity. For this reason, the water that contacts the back surface 20 of the water spray plate 17 is unlikely to form water droplets, and tends to spread in layers or films on the back surface 20. The hydrophilicity of the back surface 20 of the water spray plate 17 can be realized by applying a hydrophilic treatment to the back surface 20 of the water spray plate 17 formed of a material that is inherently hydrophobic, such as metal or resin. Examples of the hydrophilic treatment include simple application of a paint capable of forming a coating film having a contact angle with water of 50 ° or less. Examples of paints include inorganic paints containing alkali silicates, inorganic paints containing metal alkoxides, organic-inorganic composite paints, surface-hydrophilized paints, and the like. There is no. Various conventionally known hydrophilic paints can be appropriately selected.

  In such a shower head 1, two strainers 25 a and 25 b are arranged in a superposed manner in the water discharge path 5 a located inside the water spray cap 11, upstream of the water spray plate 17 in the direction of water flow and near the water spray plate 17. It is installed. The strainers 25a and 25b are net-like members having an annular shape. For example, the strainers 25a and 25b have a mesh-like pore 26 formed by knitting a wire having a small diameter vertically and horizontally, or a punching metal. Examples include those in which a large number of through-holes 26 are formed. The strainer 25a is disposed closer to the water spray plate 17, and the strainer 25b is disposed on the upstream side in the flowing direction of the strainer 25a.

  The number of strainers that can be disposed in the water discharge channel 5a is not limited to two, and may be one or a plurality of three or more.

  Moreover, in the shower head 1, in the water discharge path 5a, the strainer holding | suppressing 27 is arrange | positioned in the upstream of the strainer 25b regarding the flowing direction. The strainer presser 27 is also an annular member, and can be brought into contact with the upstream surface in the flowing direction of the strainer 25b. A circular groove 28 is formed on the surface facing the strainer 25b. With the attachment of the water discharge plug 12, the strainer retainer 27 comes into contact with the bush 13 at the upstream surface in the water flow direction of the water discharge path 5a, and contacts the strainer 25b at the downstream surface. At this time, the strainers 25 a and 25 b are in close contact with each other, and the downstream surface of the strainer 25 a is in contact with the ribs 23 in the flowing direction of the water. Therefore, the strainers 25 a and 25 b are sandwiched between the rib 23 formed on the back surface 20 side of the water spray plate 17 and the strainer holder 27 by the strainer holder 27. As a result, a water retaining gap 29 corresponding to the height of the rib 23 is formed between the water spray plate 17 and the strainer 25a. Since the groove 28 is formed in the downstream surface of the water discharge path 5a in the water discharge direction in the strainer presser 27, the pressure for pressing the strainer 25a, 25b against the rib 23 side is high, and the strainer 25a, 25b is More effective pressing toward the ribs 23 ensures the formation of the gap 29 for pooling water.

  When the rib 23 is not provided, the strainer 25 a comes into contact with the back surface 20 of the water spray plate 17 with the downstream surface in the direction of water flow with the attachment of the water discharge plug 12, and there is a slight gap between the strainer 25 a and the water spray plate 17. A gap is formed. With this slight gap, the water remaining in the water discharge channel 5a after the water stoppage can be held on the back surface 20 side of the water spray plate 17. Therefore, in the shower head 1, the rib 23 is provided to increase the gap that can hold the water as described above, and the space that can hold the water is expanded by the water gap 29 to reduce the amount of water droplets. A puddle effective for suppressing dripping can be formed in the puddle gap 29.

  As described above, in the shower head 1, the strainers 25 a and 25 b are sandwiched between the ribs 23 by the strainer presser 27, and the water collecting gap 29 is formed between the strainer 25 a and the water spray plate 17. A water pool space can be reliably formed on the back surface 20 side of the plate 17. For this reason, the water remaining in the water discharge channel 5a of the water discharger 6 after the water stop can be sufficiently accumulated and retained in the water retaining gap 29, and dripping as water droplets from the water spray holes 18 can be suppressed. Suppression of dripping of water droplets after water stoppage is easily realized, and water breakage is good.

  Further, by arranging the strainers 25a and 25b, dust and the like contained in the water can be removed, and in addition to the watering plate 17, the water flow can be adjusted better, and a water flow more suitable for the shower can be obtained.

  Further, since the water spray plate 17 is formed of a hydrophobic material and the back surface 20 of the water spray plate 17 has hydrophilicity, water remaining in the water discharge path 5a inside the water spray cap 11 after water stoppage is stored in the water spray plate 17. It can be spread and held on the back surface 20. The surface tension on the back surface 20 of the water spray plate 17 is reduced, and the water remaining in the water discharge channel 5a spreads in a thin layer or film form on the entire back surface 20 of the water spray plate 17 after water stoppage. Further, since the water spray plate 17 is made of a hydrophobic material, the water spread on the back surface 20 of the water spray plate 17 is difficult to spread on the water sprinkling hole 18 side. It is held in a film form. As a result, dripping as water droplets from the water spray hole 18 is more sufficiently suppressed, and water breakage is improved.

  FIG. 4 is an exploded perspective view showing a second embodiment of the shower head of the present invention.

  In the second embodiment, parts common to those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted below.

  In the second embodiment, the strainer retainer 27 having an annular shape shown in FIG. 1 is disposed integrally with the bush 13 and is disposed on the downstream side of the bush 13 in the flowing direction. Thus, by integrating the strainer holder 27 with the bush 13, the clamping of the strainers 25a and 25b can be further increased, and the number of parts of the shower head 1 can be reduced. In addition, the parts can be easily manufactured, and the shower head 1 can be easily assembled.

  FIG. 5 is an exploded perspective view showing a third embodiment of the shower head of the present invention.

  In the third embodiment, parts common to those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted below.

  In the third embodiment, the strainer holder 27 is disposed integrally with the bush 13 as in the second embodiment. Further, the strainer presser 27 presses the strainers 25a and 25b more locally against the ribs 23 to increase the clamping force of the strainers 25a and 25b. That is, the strainer retainer 27 is formed in a split shape, and the respective portions 27 a are arranged at a constant interval from each other, protrude downstream in the flowing direction of the bush 13, and are disposed outside the outer periphery of the water discharge socket 10. . With such a strainer presser 27, the shower head 1 can more reliably form the water gap 29.

  In addition, the shower head of this invention is not limited to the above embodiment. Various forms are possible for the shapes and structures of various members forming the main body and the water discharger, as well as the configuration and structure of the main body and the water discharger. Moreover, although only the discharge of water was described in the said description, it cannot be overemphasized that the shower head of this invention can also discharge hot water and other liquids.

DESCRIPTION OF SYMBOLS 1 Shower head 2 Flowing channel 3 Main-body part 4 Downstream end part 5a, 5b Water discharging path 6 Water discharging part 17 Sprinkling plate 18 Sprinkling hole 20 The back surface of a sprinkling plate 23 Rib 25a, 25b Strainer 27 Strainer holding | suppressing 29 Clearance for water pool

The shower head according to the present invention includes a main body portion in which a water flow channel is formed, and a water discharge channel that is disposed at a downstream end portion that is located downstream of the main body portion with respect to the flow direction and communicates with the water flow channel. A main body of the water spray plate, wherein the main body of the water spray plate is provided with an annular water spray plate formed with a plurality of water spray holes penetrating the front and back at the outlet of the water discharge passage in the water discharge portion. A rib that protrudes upstream with respect to the direction of water flow in the water discharge path of the water discharge portion is disposed on the back surface side that is located on the portion side, and in the water discharge path of the water discharge portion, on the upstream side of the water spray plate with respect to the water flow direction in and said annular strainer near the sprinkler plate is disposed, and strainer retainer is disposed relates the flowing water direction on an upstream side of the strainer, the strainer, the said ribs strike Is sandwiched between the Na pressing, it is characterized in that a gap for water reservoir to the water spray plates and the strainer are formed.

According to the shower head of the present invention, dropping of water droplets after the water stop conveniently suppressed, Ru can be as good drainage.

Claims (2)

  A main body portion having a water flow passage formed therein, and a water discharge portion having a water discharge passage that is disposed at a downstream end located downstream of the main body portion in the water flow direction and communicates with the water flow passage. In the shower head in which a watering plate in which a plurality of watering holes are formed penetrating the front and back are arranged at the outlet of the watering channel in the watering unit, on the back side located on the main body side of the watering plate, A rib projecting upstream in the direction of water flow in the water discharge section of the water discharge section is disposed, and in the water discharge path of the water discharge section, a strainer is located upstream of the water spray plate in the water discharge direction and near the water spray plate. A strainer presser is provided on the upstream side of the strainer with respect to the flowing water direction, and the strainer is sandwiched between the rib and the strainer presser, and the strainer Shower head is characterized in that the over said water spray plates clearance for puddles are formed. The shower head according to claim 1, wherein the watering plate is formed of a hydrophobic material, and a back surface of the watering plate has hydrophilicity.

Images