JP5864844B2 - shower head - Google Patents

Description

  The present invention relates to a shower head capable of performing water discharge suitable for cleaning parts such as joints and wall surfaces in a bathroom in addition to a function as a normal shower head. Here, water includes hot water.

  As this kind of shower head, the applicant of the present application has previously proposed a shower head provided with a switching mechanism of a water discharge form (see Patent Document 1). This shower head has a function of selecting a plurality of water discharge modes.

JP 2005-131143 A

  By the way, when a narrow part such as a joint or a corner of a wall in a bathroom is washed, it is desirable that the water discharge form is straight and does not diffuse. On the other hand, when cleaning wall surfaces other than joints and corners, it is desirable to diffuse and spray water over a wide area. However, in the shower head described in Patent Document 1, the water discharge form is a form that diffuses from the water discharge hole without becoming straight. For this reason, the joints and corners could not be washed efficiently. On the other hand, when the wall surface is washed, water diffuses from the position of the hole, so that it is difficult for the water to reach far. For this reason, the wall surface is not suitable for proper cleaning.

  The present invention has been made paying attention to the problems of the prior art as described above, and its purpose is to clean a narrow part and a wide part in addition to the function of a normal shower head. The object is to provide a suitable shower head.

In order to achieve the above object, the shower head of the present invention is provided with a flow path and a cylindrical discharge port connected to the flow path through an introduction port as a communication path inside the head body. The head body is provided with a face member at the tip, and the face member is provided with a nozzle for discharging water from the discharge port to the outside, and the discharge port has a passage. A first portion of the passage located at the center of the discharge port, and a second portion of the passage located at the outer periphery of the first portion, and the first portion or the first portion by a switching mechanism. The communication between the two portions and the flow path is switched, the inside of the first portion is hollow, and the introduction port communicating with the first portion opens in a peripheral wall of the discharge port, Water introduced from the inlet to the first part The moving direction is a direction that intersects the flow direction of the water discharged from the nozzle, and the water flowing from the discharge port toward the nozzle is rectified between the first portion and the nozzle. A flow regulating member is disposed , and a ratio of a distance from the communication path to the nozzle with respect to the inner diameter of the first portion is set to 1.21 or more and 3.0 or less, where the inner diameter is 1. A spherical first recess is provided inside the nozzle, and a groove-like second recess is provided outside the nozzle so as to communicate with the first recess. lateral dimension is 10 to 30 mm, Ru said second vertical dimension of the recess 2 to 6 mm, the vertical dimension of the boundary between the first recess and the second recess is 1 to 5 mm, lateral dimension of the boundary 3~10mm der It is characterized by that.

  In the present invention configured as described above, since the ratio between the inner diameter of the discharge port and the distance from the introduction port to the nozzle is set appropriately, the water in the discharge port is rectified. For this reason, the water introduced into the discharge port from the communication path shows a water discharge form rectified straight from the nozzle, and shows a water discharge form spreading radially ahead. A narrow and narrow part in the bathroom can be effectively washed with straight water discharge, and a wide part can be effectively washed with diffuse water discharge. And since water discharge is discharged straight from a nozzle, it reaches | attains far.

In the configuration of the previous reporting, the rectifying member is preferably configured in a strainer with a 30 to 100 mesh net.

In the configuration described above, the rectifying member is not preferable to have been arranged to overlap over a distance a plurality of strainers.

  The said structure WHEREIN: It is desirable for the said nozzle to be formed in the shape which discharges water toward diagonally upward.

  ADVANTAGE OF THE INVENTION According to this invention, a narrow and narrow site | part can be wash | cleaned appropriately by a straight-form water discharge form, respectively, and a wide site | part can be wash | cleaned appropriately by a diffused water discharge form.

The principal part expansion longitudinal cross-sectional view which shows the discharge outlet and water discharge form of the shower head in embodiment. The cross-sectional view which shows the discharge outlet and water discharge form of a shower head. The front view which shows the face member of the discharge outlet of a shower head. The perspective view which shows a shower head. Sectional drawing which shows the inclination state of a nozzle. The side view of a shower head. It is a figure which shows the effect | action of a shower head, Comprising: The perspective view which shows the state which wash | cleans the joint of a bathroom by straight discharge. It is a figure which shows the effect | action of a shower head, Comprising: The perspective view which shows the state which wash | cleans the wall surface of a bathroom by radial discharge. The front view which shows the strainer used in embodiment. The front view which shows the modification of a nozzle. The front view which shows another modification of a nozzle. FIG. 3 is a plan sectional view showing discharged water. The top view which shows the modification of a strainer. The top view which shows another modification of a strainer.

Hereinafter, embodiments embodying the present invention will be described.
As shown in FIGS. 1 and 4, the shower head 10 of the present embodiment includes a head body 13 having a grip portion 11 and a flow path 12 through which water flows. A cylindrical discharge port 14 is provided at the tip of the head body 13. A button 15 is provided on the head main body 13, and the flow path 12 is blocked by pressing the button 15 in one direction, and the flow path 12 is opened by pressing the button 15 in the reverse direction. Accordingly, the button 15 switches the shower head 10 between a water discharge state and a discharge stop state. A passage 16 communicating with the flow path 12 is formed in the discharge port 14. A face member 17 is attached to the tip of the shower head 10. A nozzle 18 is formed at the center of the face member 17 to discharge water to the outside for cleaning the wall surface.

  The passage 16 includes a first portion 16a located at the center of the discharge port 14, a second portion 16b located on the outer periphery thereof, and a third portion 16c located on the outer periphery thereof. Then, any one of the first to third portions 16 a, 16 b, 16 c is alternatively communicated with the flow path 12 by the switching mechanism 19. The switching mechanism 19 is switched by rotating a ring 20 that is rotatably provided at a position between the outer periphery of the face member 17 and the head body 13. The knob 21 is for rotating the ring 20.

  That is, the switching mechanism 19 is integrally formed with the ring 20 and a spherical valve body 23 housed in the housing chamber 22, a coil spring 24 that biases the valve body 23 toward the valve (left side in FIG. 1). The switching member 25 is included. Then, when the ring 20 is rotated, the switching member 25 is rotated. By the rotation of the switching member 25, the correspondence relationship between the valve body 23 and a plurality of valve holes (not shown) is switched, and any one of the first to third portions 16a, 16b, 16c and the flow path 12 are connected. .

  An introduction port 37 serving as a communication path through which water is introduced from the flow path 12 is opened in the peripheral wall 14a of the discharge port 14 and at the bottom of the first portion 16a. Water introduced from the inlet 37 into the first portion 16a flows in the direction of the nozzle 18, that is, the discharge direction x. At this time, in order to rectify the water, the ratio between the inner diameter r of the first portion 16a and the distance L from the inlet 37 to the nozzle 18 is 1: 1.21 to 1: 3. It is set to 0. When the ratio of the distance L to the inner diameter r is smaller than 1.21, the length of the first portion 16a is insufficient. For this reason, even if the strainer 38 described later is present, it becomes difficult to rectify the water in the first portion 16a, and the water discharged from the nozzle 18 is disturbed and diffused. As a result, the straight water flow 32a cannot be obtained. On the other hand, when the ratio of the distance L to the inner diameter r exceeds 3.0, the length of the discharge port 14 becomes too long and the shower head 10 becomes large, and the handleability of the shower head 10 becomes worse.

  In addition, two strainers 38 as rectifying members are provided between the tip of the peripheral wall 14 a of the discharge port 14 and the face member 17 in the first portion 16 a. As shown in FIG. 9, the strainer 38 is made of stainless steel, and includes an annular ring 38a and a net 38b inside the ring 38a. The ring 38 a of the two strainers 38 is sandwiched between the peripheral wall 14 a of the discharge port 14 and the face member 17. The stainless steel wire used for the net 38b has a wire diameter of 0.1 to 0.3 mm, for example, 0.2 mm, and the net 38b is formed by weaving the background wires. An interval of 1 to 0.5 mm is provided between the two nets 38b.

  The strainer 38 is for rectifying the water introduced from the introduction port 37 into the first portion 16a in the discharge direction x. In order to exhibit a good rectifying effect while suppressing resistance to the flow of water, when the water pressure in the discharge port 14 is 0.025 to 0.075 Mpa (megapascal), the wire diameter of the net 38b is 0.1 to 0.00. If it is in the range of 3 mm, it is preferable to have a mesh of 30 to 100 mesh, for example 70 mesh. When the mesh is less than 30 mesh, the mesh becomes too coarse and the water rectifying effect cannot be sufficiently obtained. When the mesh exceeds 100 mesh, the mesh becomes too fine and resistance to the flow of water becomes too high. As a result, the discharge amount decreases, which is not preferable. Further, even if one strainer 38 is used, the rectifying effect can be effectively expressed, but the effect can be further improved by using two or more sheets. When there are a plurality of strainers 38, the position of the mesh has little influence on the rectification effect. That is, there is almost no difference in the rectification effect even if the mesh is shifted or corresponding in the ejection direction. Further, the size of the interval between the plurality of strainers 38 also hardly affects the rectification effect, but this interval is preferably 0.5 mm or more.

  As shown in FIG. 1 and FIG. 3, the nozzle 18 is provided in a forward protruding portion 26 at the center position of the face member 17, a first concave portion 27 having a spherical shape on the inner side of the face member 17, and a laterally long outer side. A groove-shaped second recess 28 is formed. The second recess 28 has an upper surface 28a and a lower surface 28b so as to expand from the inner back to the opening side. The second recess 28 communicates with the first recess 27 at the center position. Therefore, the water that has reached the first recess 27 is discharged in a state in which the water is expanded in the lateral direction by the second recess 28. As shown in FIG. 5, a surface 28 e located equidistant from the upper surface 28 a and the lower surface 28 b of the second recess 28 is perpendicular to the tip surface of the protrusion 26. It inclines so that the front side of the discharge direction of water may turn up with respect to the surface 26a to perform. In this embodiment, the angle θ of the surface 28e with respect to the surface 26a is 20 degrees. Accordingly, as indicated by a two-dot chain line in FIG. 1, the water from the nozzle 18 is discharged obliquely upward when the surface 26a perpendicular to the tip surface of the protrusion 26 is horizontal.

  That is, the water from the first portion 16a reaches the nozzle 18, passes through the first concave portion 27, passes through the second concave portion 28, is inclined straight upward, and forms a fan-like film (see FIGS. 1 and 2). 7). Thereafter, the discharged water flow receives air resistance and forms water droplets in a diffuse form (see the left position in FIG. 1). As shown in FIG. 8, this diffusing water discharge form forms an oblong shape that is horizontally long when viewed from the front. The narrow and narrow parts such as the joints 35 and the corners 36 in the bathroom 33 can be effectively washed by the straight water flow 32a, and the wide part such as the wall surface 34 in the bathroom 33 can be effectively washed by the diffused water flow 32b. Can be effectively cleaned.

  As shown in FIGS. 1 to 3, a plurality of holes 43 are penetrated through the annular position outside the nozzle 18 of the face member 17, and a so-called hard shower is caused by a plurality of fine water streams discharged from these holes 43. Is formed. A plurality of holes 44 are formed in an annular position outside the hole 43 of the face member 17, and a so-called soft shower is formed by mist-like water discharge from these holes 44. Then, by operating the knob 21 of the switching mechanism 19, any one of the flow path 12 and the first to third portions 16 a to 16 c of the discharge port 14 is connected, and a straight water flow 32 a and a hard shower are connected. And a soft shower is selected.

  As shown in FIG. 4, an indicator 45 for confirming the rotational position of the ring 20 is provided at the upper end of the face member 17, while the ring 20 has a mark indicating a water discharge form from the nozzle 18, that is, a straight water flow. A mark 46 indicating 32a, a mark 47 indicating a hard shower, and a mark 48 indicating a soft shower are provided. When the knob 21 is positioned at the lowest position, the mark 46 of the straight water flow 32a faces the index 45, and when the knob 21 is rotated counterclockwise by a predetermined angle from that position, the mark of the hard shower is shown. 47 is opposed to the indicator 45, and the soft shower mark 48 is opposed to the indicator 45 when rotated by a predetermined angle clockwise in FIG. Then, the switching mechanism 19 is operated according to the positions of the marks 46, 47, 48, and as described above, any of the straight water flow 32a, the hard shower, and the soft shower is selected.

Next, the function of the shower head 10 of this embodiment will be described.
Now, as shown in FIG. 7, when the shower head 10 is used, the grip 46 of the head body 13 is gripped, the ring 20 of the face member 17 is rotated, and a mark 46 indicating a desired water discharge form is shown. ˜48 is set to face the index 45. For example, by setting the hard shower mark 47 to face the index 45, the body can be washed or the hair can be rinsed in the hard shower.

  When cleaning the wall 34, joints 35, corners 36, etc. in the bathroom 33, the ring 20 is positioned at the lowermost position so that the mark 46 of the straight water flow 32 a faces the index 45. As shown in FIG. 1, in this state, water from the first portion 16 a flows from the first recess 27 of the nozzle 18 to the second recess 28. At this time, since the two strainers 38 are overlapped between the discharge port 14 and the nozzle 18, the water introduced from the introduction port 37 into the first portion 16 a passes through the strainer 38. Is rectified by. In this case, since the mesh 38b of the strainer 38 is formed by weaving metal wires, water wraps around each wire and becomes turbulent, but the entire mesh 38b is rectified by the stirring effect of the turbulent flow. At the same time, the pressure difference before and after the strainer 38 hardly occurs. In addition, since the ratio of the distance L from the nozzle 18 to the inlet 37 with respect to the inner diameter r of the first portion 16a is set to 1.21 to 3.0 with the inner diameter r being 1, The water introduced from 37 into the first portion 16 a is appropriately rectified toward the nozzle 18. For this reason, the water discharged from the nozzle 18 has a straight form, and the tip side thereof has a diffusion form.

  For this reason, as shown in FIG. 7, if the shower head 10 is brought close to the joint 35 of the bathroom 33, narrow portions such as the joint 35 and the corner 36 can be intensively washed by the straight water flow 32a. If the shower head 10 is separated from the joint 35 and the corner 36, as shown in FIG. 8, the wide wall surface 34 of the bathroom 33 can be efficiently cleaned by the diffused water flow 32b.

The effects exerted by the above embodiment will be collectively described below.
(1) In the shower head 10 according to the embodiment, the ratio between the inner diameter r of the first portion 16a of the discharge port 14 and the distance L from the introduction port 37 to the nozzle 18 is 1.21 to 3 with the inner diameter r being 1. Since it is set to 0.0, the first portion 16a has a shape sufficient for the flow of water therein. In addition, a strainer 38 as a rectifying member is disposed on the upstream side of the nozzle 18. For this reason, the water introduced into the first portion 16a from the introduction port 37 is rectified and flows in the discharge direction x. And the water discharged from the nozzle 18 shows the water discharge form rectified | straightened to the straight film form from the nozzle 18, and shows the water discharge form which spreads radially ahead.

  Therefore, according to the shower head 10 of the embodiment, a narrow and narrow part in the bathroom 33 can be effectively washed with the straight water flow 32a, and a wide part can be effectively washed with the diffusion water flow 32b.

  (2) When the water passes through the strainer 38, the rectifying member is composed of the strainer 38 having a mesh of 30 to 100 mesh formed by weaving a stainless wire having a wire diameter of 0.1 to 0.3 mm. The flow resistance can be effectively rectified in the discharge direction x from the discharge port 14.

  (3) Since the rectifying member is composed of two (several) strainers 38, the water is rectified in the discharge direction x of the nozzle 18 and rectified when passing through the first strainer 38. Is further rectified in the discharge direction x of the nozzle 18 when passing through the second strainer 38. Therefore, the water rectification effect can be further improved.

  (4) The shower head 10 is often used to supply water from above to a human head or body. For this reason, as shown in FIG. 6, the shower head 10 is formed so that the upper side thereof faces downward in the upright state. For this reason, the face member 17 is also arranged downward, and the hard shower and soft shower holes 43 and 44 are directed obliquely downward. However, the water discharged from the nozzle 18 is used for cleaning the wall surface and the like. Therefore, in the configuration in which the nozzle 18 is oriented in the same direction as the holes 43 and 44, the shower head 10 needs to be held upward when cleaning the wall surface, particularly when cleaning the upper part of the wall surface. In such a case, a heavy burden is placed on the upper arm and wrist, and the cleaning work is not easy. On the other hand, the nozzle 18 in the present embodiment is configured to discharge water obliquely upward. For this reason, it is less necessary to hold the shower head 10 upward, and the cleaning operation can be performed easily.

Next, regarding the shower head 10 of the above embodiment, the relationship between the inner diameter r of the first portion 16a and the distance L from the inlet 37 to the nozzle 18 was tested under various conditions.
That is, the inner diameter r of the first portion 16a and the distance L from the inlet 37 to the nozzle 18 were changed as shown in Table 1. Then, tap water having a predetermined pressure was supplied from the flow path 12 toward the nozzle 18. And the water discharge form was visually evaluated according to the following criteria. The results are shown in Table 1. In this case, the second recess 28 of the nozzle 18 is 10-30 mm (eg, 20 mm) in the horizontal direction, that is, the left-right dimension (left-right direction in FIG. 3), the vertical dimension is 2-6 mm, eg, 4 mm, and the first recess 27. The vertical dimension of the boundary between the first and second recesses 28 is 1 to 5 mm (for example, 2.5 mm), and the horizontal dimension of the boundary is 3 to 10 (for example, 7 mm).

  “◯” indicates a case where the straight water flow 32a is obtained, and “X” indicates a case where the straight water flow 32a is not obtained.

表１に示した結果より、第１部分１６ａの内径ｒが例えば８ｍｍの場合に、導入口３７からノズル１８までの距離Ｌが１０ｍｍ以上であれば、つまり、内径ｒと距離Ｌとの比率が１：１．２５であれば、ストレート水流３２ａが得られた。距離Ｌが１０ｍｍ未満の場合は、有効な整流が実行されないため、水流がノズル１８から吐出直後に拡散し、ストレート状の水流３２ａを得ることができない。

From the results shown in Table 1, when the inner diameter r of the first portion 16a is 8 mm, for example, the distance L from the inlet 37 to the nozzle 18 is 10 mm or more, that is, the ratio between the inner diameter r and the distance L is If it was 1: 1.25, a straight water stream 32a was obtained. When the distance L is less than 10 mm, since effective rectification is not performed, the water flow is diffused from the nozzle 18 immediately after the discharge, and the straight water flow 32a cannot be obtained.

  Further, when the inner diameter r of the first portion 16a is 15 mm, if the distance L from the inlet 37 to the nozzle 18 is 19 mm or more, that is, if the ratio is 1: 1.27, the straight water flow 32a is Obtained. When the distance L is 18 mm or less, the water flow diffuses immediately after being discharged from the nozzle 18, and the straight water flow 32a cannot be obtained.

  Further, when the inner diameter r of the first portion 16a is 19 mm, if the distance L from the inlet 37 to the nozzle 18 is 23 mm or more, that is, if the ratio is 1: 1.21, a straight water flow 32a is obtained. It was. When the distance L is 22 mm or less, the water flow diffuses immediately after being discharged from the nozzle 18, and the straight water flow 32a cannot be obtained.

  The results shown in Table 1 indicate that a straight water flow 32a can be obtained if the ratio between the inner diameter r and the distance L is 1: 1.21 or more. However, if the ratio exceeds 1: 3, L becomes longer, and the shower head 10 becomes larger and difficult to use.

  The dimensions of the nozzle 18 are the above-mentioned numerical values (the horizontal dimension of the second recess 28 is 20 mm, the vertical dimension is 4 mm, the vertical dimension of the boundary between the first recess 27 and the second recess 28 is 2.5 mm, and the horizontal dimension of the boundary is 7 mm). In this case, when the water pressure in the discharge port 14 was less than 0.03 MPa, the straight water flow 32a could be obtained, but the straight water flow 32a was weak and dropped without shifting to the diffusion state. Therefore, the water pressure in the discharge port 14 needs to be 0.03 MPa or more, and is desirably 0.05 MPa or more. Here, since the water pressure in the discharge port 14 decreases as the dimension increases, in this case, the tap water supply pressure needs to be increased in order to obtain the straight water flow 32a. As the water pressure in the discharge port 14 increases, the length α of the straight water flow is extended.

It should be noted that the above-described embodiments may be modified as follows.
As shown in FIG. 10, a recess 28 c is formed on the upper side of the second recess 28. Alternatively, as shown in FIG. 11, a protrusion 28 d is formed on the upper side of the second recess 28. In this way, as shown in FIG. 12, since a streak is visible at the center in the width direction of the straight water flow 32a, it is easy to determine the aim for the joint 35 and the like.

  As shown in FIG. 13, a strainer 38c having a rectifying plate 50 having an uneven shape such as a star shape inside the ring 38a can be used as the rectifying member. Or as shown in FIG. 14, the strainer 38d which has the some annular hole 51 which makes an annular | circular shape inside the ring 38a as a rectification | straightening member can be used. It is preferable that a plurality of these strainers 38c and 38d are arranged with a space therebetween.

The introduction ports 37 provided in the first portion 16a can be provided at a plurality of positions at equal intervals in the circumferential direction of the peripheral wall 14a of the discharge port 14.
-The 2nd recessed part 28 of the said nozzle 18 can also be comprised so that it may extend in the longitudinal direction of FIG.

  It is also possible to form the first portion 16a of the discharge port 14 in a tapered shape so that the inner diameter r becomes smaller toward the downstream side of the water.

  DESCRIPTION OF SYMBOLS 10 ... Shower head, 12 ... Flow path, 13 ... Head main body, 14 ... Discharge port, 17 ... Face member, 18 ... Nozzle, 27 ... 1st recessed part, 28 ... 2nd recessed part, 38, 38c, 38d ... As a rectifying member Strainer, r ... inner diameter, L ... distance.

Claims (4)

Inside the head body, a flow path and a cylindrical discharge port connected to the flow path via an introduction port as a communication path are provided.
The head body is provided with a face member at the tip, and the face member is provided with a nozzle for discharging water from the discharge port to the outside.
A passage is formed in the discharge port, and includes a first portion of the passage located at the center of the discharge port and a second portion of the passage located at an outer periphery of the first portion, and a switching mechanism. The communication between the first part or the second part and the flow path is switched, the inside of the first part is hollow, and the introduction port communicating with the first part is a peripheral wall of the discharge port is open, the flow direction of the water introduced into the first portion from the inlet is adapted in a direction intersecting the flow direction of the water ejected from the nozzle,
Wherein between the first portion and the nozzle, rectifying member for rectifying water toward the nozzle from the discharge port is disposed,
The ratio of the distance from the communication path to the nozzle with respect to the inner diameter of the first portion is set to 1.21 or more and 3.0 or less, where the inner diameter is 1 .
A spherical first recess is provided on the inner side of the nozzle, and a groove-like second recess is provided on the outer side of the nozzle so as to communicate with the first recess. 10 to 30 mm, the second vertical dimension of the recess 2 to 6 mm, said first recess and said vertical dimension of the boundary of the second concave portion is 1 to 5 mm, lateral dimension, wherein 3~10mm der Rukoto of the boundary And a shower head. The shower head according to claim 1, wherein the rectifying member is composed of a strainer having a mesh of 30 to 100 mesh. The shower head according to claim 2, wherein the rectifying member is formed by stacking a plurality of strainers with an interval therebetween. The shower head according to any one of claims 1 to 3 , wherein the nozzle is formed in a shape that discharges water obliquely upward.

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