JP5524554B2 - shower head - Google Patents

Description

  The present invention relates to a shower head.

  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 section having a main body portion in which a water flow path is formed, and a water discharge path that is disposed at a downstream end portion that is located downstream in the flow direction in the main body section and communicates with the water flow path. A shower head in which a water spray plate in which a plurality of water spray holes are formed penetrating the front and back are arranged at the outlet of the water discharge channel in the water discharge part, and the water spray plate is formed of a hydrophobic material, The back surface located on the main body side of the water spray plate is hydrophilically treated, and the water remaining in the water discharge channel after water stop spreads on the water treated back surface of the water spray plate, hardly spreads on the water spray hole side, It is characterized in that it is held in the form of a thin layer or film on the back surface of the watering plate .

  According to a second aspect of the present invention, in the first aspect of the invention, a strainer is disposed in the water discharge path of the water discharge portion in the middle of reaching the water spray plate, and the strainer is disposed in contact with or close to the back surface of the water spray plate. It is characterized by being.

  According to the first aspect, the water spray plate in which the plurality of water spray holes are formed through the front and back surfaces is formed from the hydrophobic material, and the back surface located on the main body side of the water spray plate is subjected to the hydrophilic treatment. Therefore, the water remaining in the water discharge channel of the water discharge section after the water stop can be spread and held on the back surface of the water spray plate. The surface tension on the back surface of the water spray plate is reduced by the hydrophilic treatment, and the water remaining in the water discharge path of the water discharge portion spreads on the back surface of the water spray plate after water stoppage. Moreover, since the water spray plate is formed of a hydrophobic material, the spread water is prevented from dropping as water droplets from the water spray holes, and is held in a thin layer or film on the back surface of the water spray plate. It is not necessary to coat the photocatalytic material on the inside of the watering holes of the watering plate for the hydrophilic treatment, and a general hydrophilic treatment can be applied. Therefore, an ultraviolet irradiation means is incorporated in the shower head, There is no need to install it outside. Suppression of dripping of water droplets after water stoppage is easily realized, and water breakage is good.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the strainer is disposed on the way to the water spray plate in the water discharge path of the water discharge portion, and the strainer is in contact with or close to the back surface of the water spray plate. Therefore, it is possible to remove dust contained in the water and to adjust the water flow in combination with the watering plate, and to obtain a water flow more suitable for the shower. Moreover, water can be hold | maintained between a strainer and the back surface of a water spray plate, and it is suppressed more as a water drop dripping from a water spray hole, and water drainage becomes more favorable.

It is the perspective view which showed one Embodiment of the shower head of this invention. It is sectional drawing of the shower head shown in FIG. It is the perspective view which showed the watering cap in the water discharging part of the shower head shown in FIG.

  As described above, FIG. 1 is a perspective view showing an embodiment of the shower head of the present invention, and FIG. 2 is a cross-sectional view of the shower head shown in FIG. FIG. 3 is a perspective view showing a watering cap in the water discharge portion of the shower head shown in FIG.

  The shower head 1 is disposed in a hollow main body 3 having a flow channel 2 formed therein, and a downstream end 4 located on the downstream side 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 connected with the flowing water path 2 was 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 substantially cylindrical shape, and is fitted inside the downstream end portion 4 with 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. .

  A substantially 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 portion 4 of the main body 3 in the water flow direction. Protruding. 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 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 substantially 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 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.

  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.

  The water discharge plug 12 has a substantially cylindrical shape, and is fitted into the water discharge socket 10 and attached thereto. 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.

  Moreover, in the water discharge plug 12, the flange part 20 extended outside is arrange | positioned in the edge part by the side of the outlet of the water discharge path 5b. By inserting the water discharge plug 12 into the water discharge socket 10, the flange portion 20 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.

  In such a shower head 1, the water spray plate 17 is formed of a hydrophobic material that repels water, and the back surface 23 located on the main body 3 side of the water spray plate 17 is subjected to a hydrophilic treatment. 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.

  In the hydrophilic treatment applied to the back surface 23 of the water spray plate 17, for example, application of a paint capable of forming a coating film having a contact angle with water of 50 ° or less is exemplified. 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.

  Thus, in the shower head 1, since the watering board 17 is formed from the hydrophobic material and the back surface 23 of the watering board 17 is hydrophilically treated, the water discharge path 5a inside the watering cap 11 is stopped after the water is stopped. The remaining water can be spread and held on the back surface 23 of the water spray plate 17. The surface tension on the back surface 23 of the water spray plate 17 is reduced by the hydrophilic treatment, and the water remaining in the water discharge channel 5a spreads on the back surface 23 of the water spray plate 17 after the water stoppage. Further, since the water spray plate 17 is formed of a hydrophobic material, the water spread on the back surface 23 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 holes 18 is suppressed, and water drainage is improved.

  Therefore, it is not necessary to coat a photocatalytic material as described in Patent Document 1 on the inside of the water spray holes 18 of the water spray plate 17 for the hydrophilic process, and a general hydrophilic process can be applied. . For this reason, it is not necessary to incorporate ultraviolet irradiation means inside the shower head 1 or to install it outside, and the dripping of water droplets after the water stoppage in the shower head 1 is easily realized.

  Further, in the shower head 1, a strainer 24 is disposed on the way to the water spray plate 17 in the water discharge channel 5 a located inside the water spray cap 11. The strainer 24 is a net-like member, for example, one having a mesh formed by knitting a wire having a small diameter vertically and horizontally, or one having a large number of pores penetrating the front and back, such as punching metal, etc. Is done. Specifically, such a strainer 24 allows water to flow between the bush 13 and the water spray plate 17 in the water discharge channel 5 a, the portion in contact with the back surface 23 of the water spray plate 17, or the back surface 23 of the water spray plate 17. It is arranged in a portion close enough to be held. For this reason, the strainer 24 can remove dust and the like contained in the water, and in addition to the water spray plate 17, the water flow can be adjusted better, and a water flow more suitable for the shower can be obtained. In addition, water can be held between the strainer 24 and the back surface 23 of the water spray plate 17, and dripping as water droplets from the water spray holes 18 is further suppressed, resulting in better water drainage.

  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 Flow channel 3 Main-body part 4 Downstream end part 5a, 5b Water discharge path 6 Water discharge part 17 Water spray plate 18 Water spray hole 23 The back surface of a water spray plate 24 Strainer

Claims (2)

A main body portion having a water flow passage formed therein, and a water discharge portion having a water discharge passage disposed at a downstream end located on the downstream side in the water flow direction in the main body portion and communicating with the water flow passage. In the shower head in which a water spray plate having a plurality of water spray holes penetrating the front and back is disposed at the outlet of the water discharge channel in the water spray plate, the water spray plate is formed from a hydrophobic material, and the water spray plate has a main body side. The water surface that is left in the water discharge channel after water stoppage spreads on the back surface of the watering plate that has been hydrophilically treated, hardly spreads on the watering hole side, and the spread water is on the back surface of the watering plate. A shower head characterized by being held in a thin layer or film .   The shower head according to claim 1, wherein a strainer is disposed on the way to the water spray plate in the water discharge path of the water discharge portion, and the strainer is disposed in contact with or close to the back surface of the water spray plate.

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