JP5475312B2 - shower head - Google Patents

Description

  The present invention relates to a shower head that discharges water (including hot water).

  As a conventional shower head configured to discharge water from a plurality of through holes provided in a shower plate mounted on a shower head body, a plurality of types of shower plates having different numbers and diameters of the through holes are prepared. There is something that is.

  In this shower head, by using a shower plate of a type suitable for the pressure of the water supplied to the shower head (feed water pressure), it is possible to eliminate harmful effects caused by the difference in the feed water pressure and to provide good water discharge to the shower head. Can be done.

JP 2004-33627 A

  However, the above-described conventional shower head increases the cost because a plurality of types of shower plates are manufactured.

  The conventional shower head is sold as a set with a plurality of types of shower plates. However, unnecessary types of shower plates are not used for the user, leading to waste of resources.

  The present invention has been made in view of the above-described circumstances, and the object thereof is to achieve a good water discharge with a simple configuration that eliminates the adverse effects caused by the difference in the water supply pressure level, thereby reducing the manufacturing cost. Another object is to provide a shower head that contributes to waste and eliminates waste of resources.

In order to achieve the above object, a shower head according to the present invention includes a shower plate covering an opening provided in a shower head main body, and passes through the shower head main body from the upstream side of the shower head main body. Is a shower head configured such that water reaching the outside is discharged to the outside of the shower head body from a plurality of through holes provided in the shower plate,
The shower plate is mountable by changing a plurality of angles about the central axis of the shower plate to the shower head body,
By changing the angle at the time of mounting the shower plate to the shower head body, varying the degree to which the shower plate is narrowing the flow path of the water from the upstream side of the shower head body up to the plurality of through-holes and it is configured to be able (claim 1).

Further, the shower head according to the present invention, the shower plate has a rear tube portion extending toward the opening when the shower plate is mounted on the shower head body,
At the rear end of the rear tube portion, a notch portion, a protruding portion extending rearward, and a not protruding portion are cut out so as to correspond to the mounting posture of the shower plate with respect to the shower head body at an arbitrary angle. And at least any two of the flat portions not provided are provided,
A portion which is provided in the shower head body and protrudes to a boundary portion between the internal hole connected to the upstream side of the opening and the opening by changing the angle when the shower plate is attached to the shower head body. May be changed to at least any two of the cutout portion, the protruding portion, and the flat portion (claim 2).

Further, in the shower head according to the present invention, a plurality of the cutout portions having different degrees of narrowing the flow path may be provided, or a plurality of the protruding portions having different degrees of narrowing the flow path may be provided. It is which may be (claim 3).

  In the inventions according to claims 1 to 3, it is possible to realize a good water discharge with a simple configuration that eliminates the adverse effects caused by the difference in the water supply pressure level, contributing to a reduction in manufacturing costs and wasting resources. A shower head that eliminates the problem can be obtained.

  That is, in the invention according to claims 1 and 2, the flow path of water from the upstream side of the shower head body to the plurality of through holes is narrowed by changing the angle at the time of mounting the shower plate on the shower head body. Since the degree changes, it is possible to realize good water discharge that eliminates the adverse effects caused by the difference in the water supply pressure level, and for that purpose, it is only necessary to provide a flow path obstruction portion on the shower plate, so that the configuration is It becomes extremely simple.

  In addition, in the inventions according to claims 1 and 2, it is not necessary to manufacture a plurality of types of shower plates in order to cope with the difference in water supply pressure, and a single shower plate is sufficient, so that the manufacturing cost is reduced. Since the unused shower plate is not manufactured, it can contribute to resource saving.

  In addition, in the invention according to claim 3, since the degree of narrowing of the flow path of the water from the upstream side of the shower head body to the plurality of through holes can be switched in multiple stages, the functionality and convenience are improved. Can be achieved.

(A) And (B) is a disassembled perspective view which shows schematically the structure of the shower head which concerns on one embodiment of this invention, changing the angle of a shower board. (A) And (B) is the longitudinal cross-sectional view and front view which show schematically the structure of the said shower head when it exists in the position which does not narrow the flow path of the water until a flow-path obstruction part reaches a several through-hole. It is. (A) And (B) is the longitudinal cross-sectional view and front view which show schematically the structure of the said shower head when it exists in the position which narrows the flow path of the water until a flow-path obstruction part reaches a some through-hole. is there. (A)-(D) are the front view, side view, longitudinal cross-sectional view, rear view which shows the structure of the shower head main body of the said shower head roughly, (E) is the structure of the lower part of the said shower head main body. (F) is a cross-sectional view taken along the line II in (A), and (G) is a cross-sectional view taken along the line in (A). (A)-(E) are the rear view which shows the structure of the shower plate of the said shower head, one side view, another side view, a longitudinal cross-sectional view, and a front view. (A) And (B) is a disassembled perspective view which shows schematically the structure of the shower head which concerns on the modification of this invention, changing the angle of a shower board. (A)-(E) are the rear view which shows the structure of the shower plate of the said shower head which concerns on a modification, one side view, another side view, a longitudinal cross-sectional view, and a front view.

  Hereinafter, a shower apparatus provided with a shower head according to an embodiment of the present invention will be described with reference to FIGS.

  The shower apparatus according to the present embodiment is installed in, for example, a bathroom, and the shower head 1 shown in FIGS. 2 (A) and (B), FIGS. 3 (A) and (B), and the shower head. 1 is provided with a shower hose (not shown) connected to a connecting portion 1a provided on the base end side (lower end side), and a hot water / water mixing faucet (not shown) is provided upstream of the shower hose. ) Is provided.

  The shower head 1 includes a shower head main body 2 and a shower plate 3 that covers the opening 6 of the shower head main body 2 as shown in FIGS. A plurality of penetrating water provided in the shower plate 3 is led from the hot water / water mixture faucet, passes through the shower hose, and reaches the opening 6 from the upstream side of the shower head body 2 through the shower head body 2. It is configured to be discharged from the hole 11 to the outside of the shower head body 2.

  The shower head main body 2 is made of a synthetic resin, and is a member formed in a hollow curved shape as shown in FIGS. 4A to 4G, and the head 4 provided at the upper end (tip). And the grip part 5 provided from the center part to the lower end part (base end part).

  The head 4 has a substantially circular shape when viewed from the front as shown in FIG. 4 (A), and as shown in FIGS. 1 (A) and (B), FIGS. 4 (C), (F), and (G), It has an opening 6 opened on the front surface.

  As shown in FIGS. 1 (A) and 1 (B) and FIGS. 4 (A), (C), (F), and (G), the opening 6 includes a substantially circular back wall 7 and the back wall. 7 is a portion that can be referred to as a recessed portion that is recessed from the front surface of the head 4 toward the rear. And the inner diameter of the rear part 8b in the back is smaller than the inner diameter of the front part 8a of the surrounding wall 8. FIG.

  On the other hand, as shown in FIGS. 4A, 4B, and 4D, the grip portion 5 has a size and shape that can be easily gripped by the user. An internal hole 9 is formed so as to extend through (see FIG. 4C). As shown in FIGS. 4C, 4E, and 4F, the inner hole 9 has one end (lower end) facing the outside from the base end surface of the shower head body 2 and the other end (upper end) opened. It is comprised so that it may face in the opening part 6 from the rear side part 8b of the surrounding wall 8 of the part 6. FIG. 2B, FIG. 3B, and FIG. 4A, the illustration of the internal hole 9 that faces the base end surface of the shower head body 2 is omitted.

  The shower plate 3 is made of a synthetic resin, and as shown in FIGS. 1A and 1B and FIGS. 5A to 5E, the discharge surface portion 10 having a substantially circular shape in front view and the discharge surface portion 10. And a substantially cylindrical tube portion 11 which is connected to the outer peripheral portion and extends toward the rear side.

  As shown in FIGS. 5 (A), (D), and (E), the discharge surface portion 10 is provided with a plurality of through-holes 12 that penetrate through substantially the entire surface thereof, and FIGS. 5 (D) and (E). As shown in FIG. 5, a plurality of (three in this example) grooves 13 are provided along the outer peripheral portion of the ejection surface portion 10. In addition, illustration of the through-hole 12 is abbreviate | omitted in FIG. 1 (A) and (B).

  As shown in FIGS. 5B to 5D, the cylindrical portion 11 has an outer diameter of the front cylindrical portion 14 larger than an outer diameter of the rear cylindrical portion 15 provided on the rear side of the front cylindrical portion 14. In addition, an annular groove 14a in which an O-ring 16 (see FIGS. 2A and 3A) as a seal member is mounted is provided on the outer peripheral portion of the front cylinder portion 14.

  The shower plate 3 can be attached to the shower head body 2 by changing a plurality of angles (four in this example) around a central axis X (see FIG. 5D) extending in the front-rear direction of the shower plate 3. There is an engaging structure for that purpose provided in the opening 6 of the shower head body 2 and the shower plate 3.

  That is, as shown in FIGS. 1 (A) and 1 (B) and FIGS. 4 (A), (C), (F), and (G), a plurality of (books) are provided on the rear portion 8b of the peripheral wall 8 of the opening 6. In the example, four engagement grooves 17 are provided at equal intervals in the circumferential direction of the peripheral wall 8, as shown in FIGS. 1 (A) and 1 (B) and FIGS. 5 (A) to 5 (C). In addition, a plurality of (four in this example) engagement protrusions 18 that can be engaged with the engagement groove 17 are arranged at equal intervals in the circumferential direction of the rear cylinder portion 15 on the rear cylinder portion 15 of the cylindrical portion 11 of the shower plate 3. Is provided.

  Here, as shown in FIGS. 1 (A) and 1 (B), FIGS. 4 (C), (F), and (G), the engaging groove 17 includes a receiving groove 17a that extends toward the outside of the opening 6. And an engaging groove portion 17b extending in the circumferential direction of the peripheral wall 8 from the back side (rear side) of the receiving groove portion 17a. Therefore, in order to attach the shower plate 3 to the shower head body 2, the four engagement protrusions are aligned with the respective engagement protrusions 18 of the shower plate 3 and the respective engagement grooves 17 of the shower head body 2. 18 is inserted from the receiving groove portions 17a of the four engaging grooves 17 until it abuts into the engaging groove 17, and then the shower plate 3 is rotated around the central axis X by a predetermined angle. This mounting can be easily performed using, for example, a dedicated tool (not shown) having an insertion portion that can be inserted into and engaged with the three grooves 13 of the shower plate 3. Further, as shown in FIGS. 2 (A) and 3 (A), the mounted shower plate 3 is in a state of being tightly fixed to the opening 6 by an O-ring 16 that contacts the front portion 8a of the peripheral wall 8. .

  Further, each engagement groove 17 has a line that is equidistant from all the engagement grooves 17 (a line that overlaps the central axis X when the shower plate 3 is attached to the shower head body 2) as an axis. When it is rotated, it is configured to be exactly overlapped with the other engaging grooves 17 every predetermined angle (90 degrees in this example), and this point is the same for each engaging protrusion 18, so that the shower plate 3 is As described above, the angle (orientation) around the central axis X at the time of mounting on the shower head main body 2 can be changed to a plurality (four), so as to correspond to mounting postures at any two angles. A cutout portion 19 and a protruding portion 20 extending rearward are provided at the rear end of the rear cylinder portion 15 of the cylinder portion 11 (FIGS. 1A and 1B, FIG. 5A to FIG. 5). (See (D)).

  The protruding portion 20 extends into the opening 6 when the shower plate 3 is attached to the shower head main body 2, and the angle when the shower plate 3 is attached to the shower head main body 2 is changed to change the shower portion 20. A state in which the flow path of water from the upstream side of the head main body 2 to the plurality of through holes 12 through the internal holes 9 is narrowed (see FIGS. 3A and 3B) and a state in which it is not narrowed. (Refer to FIG. 2 (A) and (B)) It is a part which forms the channel obstruction part which switches.

  More specifically, when the shower plate 3 is mounted on the shower head body 2 so that the protruding portion 20 is located at the position shown in FIG. 3A, that is, the lowermost position in the rear cylinder portion 15 (FIG. 1B) The protruding portion 20 protrudes at the boundary portion between the internal hole 9 and the opening 6, and the flow path of water from the internal hole 9 into the opening 6 is greatly increased by the protruding portion 20 functioning as a weir. It narrows.

  Conversely, when the shower plate 3 is attached to the shower head body 2 so that the protruding portion 20 is at the position shown in FIG. 2A, that is, the uppermost position in the rear cylinder portion 15 (see also FIG. 1A). In addition, the flow path of water from the protruding portion 20 through the internal hole 9 to the plurality of through holes 12 is not narrowed. At this time, the lowermost portion of the rear cylinder portion 15 is the cutout portion 19, and the cutout portion 19 is cut so as not to protrude to the boundary portion between the internal hole 9 and the opening 6. Since the shape is lacking, the flow path of water from the internal hole 9 into the opening 6 cannot be narrowed.

  Further, the shower plate 3 is positioned so that the protruding portion 20 is positioned 90 degrees around the central axis X from the position shown in FIG. 3A or the position shown in FIG. 2A (left and right position in the rear cylinder portion 15). Is attached to the shower head main body 2, any of the portions surrounded by phantom lines in FIG. 1A (hereinafter, these portions are referred to as flat portions for convenience) 21, 21 is the outermost portion of the rear cylinder portion 15. Come down. And at this time, the flat part 21 will protrude in the boundary part of the internal hole 9 and the opening part 6, and the flow path of the water from the internal hole 9 in the opening part 6 is carried out by the flat part 21 which functions as a weir. Although narrowing, the degree of narrowing is smaller than when the protruding portion 20 comes to the lowest position of the rear cylinder portion 15. At this time, not only the notched portion 19 but also the protruding portion 20 does not narrow the water flow path from the internal hole 9 to the plurality of through holes 12.

  As described above, in the shower head of this example, when the shower plate 3 is attached to the shower head main body 2, a plurality of angles around the central axis X of the shower plate 3 can be changed to change a plurality of angles from the inner hole 9. The degree of narrowing the flow path of water reaching the through hole 12 can be changed, and thereby the pressure or flow rate of water sent from the internal hole 9 to the plurality of through holes 12 can be adjusted.

  Here, when the shower plate 3 is attached to the shower head main body 2, the rear surface side of the shower plate 3 is inserted into the opening 6 and hidden from the outside, so a mark is provided on the front side of the shower plate 3. It is preferable that the positions of the cutout portion 19, the protruding portion 20, and the flat portion 21 on the rear surface side of the shower plate 3 can be grasped. As a mark for that purpose, the three grooves 13 of the shower plate 3 can be used, but in addition, a notation or the like serving as a mark may be provided on the front side of the shower plate 3.

  In addition, the shower head of this example can change suitably components, such as a material and a shape of each member. Therefore, the modified example will be described below.

  The shower plate 3 can be attached to the shower head body 2 by changing the angle around the central axis X by four angles, but the shower plate 3 can be attached to the shower head body 2 by changing the angle to 2, 3 or 5 or more. On the other hand, it may be attachable.

  As a means for attaching the shower plate 3 to the shower head body 2, a fixing means such as screwing using a screw member, for example, is employed instead of the engagement structure composed of the engagement groove 17 and the engagement protrusion 18. May be. In such a case, if it is difficult to adjust (switch) the shower plate 3 to an arbitrary angle among a plurality of angles around the central axis X with only the fixing means, the above-mentioned arbitrary angle is supported. Thus, for example, it is preferable that the shower plate 3 and the opening 6 are provided with a plurality of projections and recesses to be fitted to each other to facilitate the angle adjustment of the shower plate 3.

  The protruding portion 20 can have various shapes, and the protruding portion 20 may have a shape such as a mountain shape or a saw-tooth shape.

  Any one of the cutout portion 19, the protruding portion 20, and the flat portion 21 may not be provided. That is, you may make it provide only the notch part 19 and the protrusion part 20, or only the notch part 19 and the flat part 21, or only the protrusion part 20 and the flat part 21 in the shower board 3. FIG. Incidentally, when only the cutout portion 19 and the flat portion 21 are provided, the flat portion 21 functions exclusively as the flow path obstruction portion that replaces the protruding portion 20. Further, when the notched portion 19, the protruding portion 20, and the flat portion 21 are provided as in this example, or when only the protruding portion 20 and the flat portion 21 are provided, only the protruding portion 20 is the above-described flow path obstructing portion. It can be said that the flat portion 21 also functions as a flow path obstruction portion.

  For example, as shown in FIGS. 6 (A) and 6 (B) and FIGS. 7 (A) to (D), it extends rearward as a protruding portion 20 at the rear end of the rear cylinder portion 15, and the extension amount A plurality (three in the illustrated example) of protruding portions 20A to 20C may be provided. In this case, by changing the angle around the central axis X when the shower plate 3 is attached to the shower head main body 2, any one of the plurality of projecting portions 20 </ b> A to 20 </ b> C is formed in the internal hole from the upstream side of the shower head main body 2. 9 and a state in which the flow path of water extending to the plurality of through holes 12 is narrowed, and a state in which any of the plurality of protruding portions 20A to 20C is in a position where the flow path is not narrowed (notched portion 19 Is in the lowest position of the rear cylinder portion 15).

  And the amount of protrusion to the back is the largest in the protruding portion 20A, then the protruding portion 20B is the largest, and the protruding portion 20C is the smallest, and accordingly, the protruding portions 20A to 20C narrow the flow path, That is, the degree of narrowing of the flow path when coming to the lowermost position of the rear cylinder portion 15 is also different.

  Moreover, as shown in FIG.7 (E), the position of the notch part 19 and protrusion part 20A-20C in the rear surface side of the shower board 3 is shown in the front side of the shower board 3 of the shower head which concerns on this modification. Notations 22A to 22C serving as markers for grasping are provided. The notation 22A indicates the position of the protruding portion 20A, the notation 22B indicates the position of the protruding portion 20B, the notation 22C indicates the position of the protruding portion 20C, and each notation 22A to 22C has a substantially equilateral triangle shape. The notation 22C is the largest, followed by the notation 22B, and the notation 20A is the smallest.

  Here, in the shower head according to the modification shown in FIGS. 6A and 6B and FIGS. 7A to 7E, the protruding portion 20 according to the shower head of this example is defined as a protruding portion 20B. Since the flat portions 21 and 21 shown in (A) are merely the protruding portions 20A and 20C, a more detailed description of the shower head according to this modification is omitted to avoid duplication.

  Although various modifications have been described above, in further detail, in the shower head of the present invention, when the shower plate 3 is attached to the shower head body 2, the angle about the central axis X of the shower plate 3 is described. It is only necessary to change the degree of narrowing of the flow path of water from the internal hole 9 to the plurality of through holes 12 by changing the plurality of holes, and if the degree of narrowing is different, only the cutout portion 19 is projected. Only the portion 20 or only the flat portion 21 may be provided on the shower plate 3.

  Furthermore, the present invention is not limited to a shower head, and can also be applied to a water discharge device configured to perform so-called curan water discharge, for example.

DESCRIPTION OF SYMBOLS 1 Shower head 2 Shower head main body 3 Shower board 6 Opening part 20 Flow path obstruction part 21 Flat part X Center axis

Claims (3)

A shower plate covering an opening provided in the shower head body is provided, and water that reaches the opening from the upstream side of the shower head body through the shower head body passes through the plurality of penetrations provided in the shower plate. A shower head configured to be discharged from the hole to the outside of the shower head body,
The shower plate is mountable by changing a plurality of angles about the central axis of the shower plate to the shower head body,
By changing the angle at the time of mounting the shower plate to the shower head body, varying the degree to which the shower plate is narrowing the flow path of the water from the upstream side of the shower head body up to the plurality of through-holes Shower head that is configured to be able to. The shower plate has a rear tube portion that extends toward the opening when the shower plate is attached to the shower head body,
At the rear end of the rear tube portion, a notch portion, a protruding portion extending rearward, and a not protruding portion are cut out so as to correspond to the mounting posture of the shower plate with respect to the shower head body at an arbitrary angle. And at least any two of the flat portions not provided are provided,
A portion which is provided in the shower head body and protrudes to a boundary portion between the internal hole connected to the upstream side of the opening and the opening by changing the angle when the shower plate is attached to the shower head body. The shower head according to claim 1, wherein the shower head can be changed into at least any two of the cutout portion, the protruding portion, and the flat portion . 3. The shower head according to claim 2, wherein a plurality of the cutout portions having different degrees of narrowing the flow path are provided, or a plurality of the protruding portions having different degrees of narrowing the flow path are provided. .

Images