JP2018114024A - Shower head and throttle member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shower head capable of improving maintainability.SOLUTION: A shower head 2 includes: a cover member 3; a water channel formation member 6 which has at least a part arranged inside the cover member 3, and forms a water channel through which water circulates, and has a first air introduction hole 64; and a throttle member 7 which is arranged near an end at an upstream side of the water channel formation member 6, and throttles a flow channel of water circulating inside the water channel formation member 6. The throttle member 7 is formed so as to be attachable/detachable to/from the water channel formation member 6.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a shower head and a throttle member.

2. Description of the Related Art Conventionally, a cover member, a water passage forming member disposed inside the cover member and having an air introduction hole, and a throttle member for restricting the flow path of water are provided, and air is supplied through the air introduction hole of the water passage formation member. A shower head to be introduced is known (see, for example, Patent Documents 1 and 2).
The throttle member of the shower head described in Patent Literature 1 is disposed on the downstream side of the water passage forming member at a connecting portion between two members obtained by dividing the water passage forming member into two members.
Moreover, in the shower head described in Patent Document 2, the throttle member is fixed to the end portion on the most upstream side of the water passage forming member. The lower end part of the throttle member of the shower head described in Patent Document 2 constitutes a hose attachment part, and a hose that supplies water to the shower head is detachably attached to the lower end part of the throttle member.

Japanese Patent No. 4632106 Japanese Patent No. 5777733

In the shower head described in Patent Document 1, since the water passage forming member is divided into two members and assembled, the number of connecting portions increases, and the assembling property tends to be deteriorated. In addition, since the throttle member is arranged on the downstream side of the water passage forming member and the water passage forming member is arranged inside the cover member, the water passage forming member is used when the throttle member is taken out for maintenance. Must be removed from the cover member. For this reason, it is difficult to maintain the diaphragm member.
Further, in the shower head described in Patent Document 2, the throttle member is integrated with the water passage forming member, and is fixed to the end portion on the most upstream side of the water passage forming member in a non-detachable manner. It is difficult to maintain the diaphragm member.
Therefore, it is desired that the maintainability of the diaphragm member can be improved.
In addition, it is desirable that the throttle member arranged in the water passage forming member other than the shower head can improve the maintainability for the same reason as the throttle member arranged in the shower head.

  An object of this invention is to provide the shower head and aperture member which can improve maintainability.

  The present invention includes a cover member (for example, a cover member 3 to be described later) and at least a part of the cover member to form a water passage through which water flows and a first air introduction hole (for example, to be described later). A water passage forming member (for example, a water passage forming member 6 described later) having a water passage forming member-side air introduction hole 64) and an upstream end portion of the water passage forming member are disposed near the water passage forming member. A shower head configured to be detachable with respect to the water passage forming member, and a throttle member (for example, an orifice member 7 to be described later) that squeezes a flow path of water flowing inside the member. For example, it relates to a shower head 2) described later.

  In addition, the throttle member is disposed on the upstream side and has a nozzle member (for example, a nozzle member 71 described later) that narrows the flow path, and a diffuser member that is disposed on the downstream side and expands the flow path (for example, a diffuser member 72 described later). ) And is preferably configured as a unit.

  Moreover, it is preferable that the said throttle member has an engaging part (For example, the below-mentioned orifice member attachment engaging part 724) which can be engaged / disengaged with the said 1st air introduction hole.

  Further, a second air introduction hole (for example, an external communication air introduction hole 301 described later) is formed between the cover member and the water passage forming member and communicates the first air introduction hole and the outside of the cover member. ).

  Moreover, it is preferable that the first air introduction hole and the second air introduction hole also serve as a drainage hole for discharging water that returns the inside of the water passage forming member from the downstream side to the upstream side.

  The second air introduction hole is preferably disposed on the front side and / or the rear side of the shower head.

  Further, the present invention provides a throttle member that forms a water passage through which water flows and is arranged in a water passage forming member having a first air introduction hole, and restricts the flow path of water that flows through the inside of the water passage forming member. The throttle member has a claw portion (for example, an orifice member mounting claw portion 724b to be described later) that can be engaged with and disengaged from the first air introduction hole, so that it can be attached to and detached from the water passage forming member. The present invention relates to a configured throttle member.

  ADVANTAGE OF THE INVENTION According to this invention, the shower head and diaphragm | throttle member which can improve maintainability can be provided.

It is a longitudinal cross-sectional view which shows the shower apparatus as one Embodiment of this invention. It is the elements on larger scale of the shower head in FIG. It is a perspective view which shows the state which removed the orifice member from the water flow path formation member of the shower head of this invention. It is a cross-sectional perspective view which shows the engagement state of an orifice member and a water flow path formation member. It is a perspective view which shows the state which isolate | separated the orifice member into the nozzle member and the diffuser member. It is the sectional view on the AA line in FIG. It is sectional drawing which cut | disconnected the shower head in the BB line in FIG. It is sectional drawing which cut | disconnected the shower head in the CC line in FIG. It is sectional drawing which cut | disconnected the shower head in the DD line | wire in FIG.

Hereinafter, a preferred embodiment of the shower device 1 of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a shower apparatus 1 as an embodiment of the present invention. FIG. 2 is a partially enlarged view of the shower head 2 in FIG. FIG. 3 is a perspective view showing a state where the orifice member 7 is removed from the water passage forming member 6 of the shower head 2 of the present invention. FIG. 4 is a cross-sectional perspective view showing an engaged state between the orifice member 7 and the water passage forming member 6. FIG. 5 is a perspective view showing a state where the orifice member 7 is separated into the nozzle member 71 and the diffuser member 72. 6 is a cross-sectional view taken along line AA in FIG. 7 is a cross-sectional view of the shower head 2 taken along line BB in FIG. FIG. 8 is a cross-sectional view of the shower head 2 taken along line CC in FIG. 9 is a cross-sectional view of the shower head 2 taken along line DD in FIG.
In the following description, in the direction of the shower head 2 hooked on the shower hook 13 in FIG. 1, the side opposite to the wall surface 12 in the shower head 2 is defined as the front side F (front side), and the wall surface 12 in the shower head 2. The side is defined as a rear side R (rear side, rear side). The left-right direction when the shower head 2 is viewed from the front side is referred to as a left-right direction X. Further, the vertical direction along the vertical direction is defined as the vertical direction Z.

  The shower apparatus 1 of this embodiment is arrange | positioned at a bathroom (not shown) etc., for example. As shown in FIG. 1, the shower device 1 includes a shower head 2, a water faucet (not shown), and a hose portion 11. A water supply pipe (not shown) is connected to the water tap (not shown), and hot water is supplied from this water supply pipe. One end of the hose portion 11 is connected to the faucet, and the other end is connected to the shower head 2. Hot water supplied from the faucet is circulated through the hose portion 11.

  The hose part 11 includes a hose body 111, a hose connection member 112, and a connecting member 113. The hose connecting member 112 is connected to the tip of the hose body 111 via a connecting member 113. A hose side threaded portion 112 a that is screwed into an outer circumferential threaded portion 61 of a water passage forming member 6 to be described later is formed on the inner peripheral surface on the distal end side of the hose connecting member 112.

  The shower head 2 is connected to a water faucet (not shown) via the hose portion 11. The shower head 2 discharges hot water supplied from the hose portion 11. The hose connection member 112 of the hose part can be hooked on the shower hook 13 attached to the wall surface 12. Thereby, the position of the shower head 2 is fixed with respect to the wall surface 12.

  The shower head 2 includes a cover member 3, a water spray plate 4, a water spray plate adapter 5, a water passage forming member 6, and an orifice member 7 as a throttle member. The cover member 3 constitutes the outer shape of the shower head 2 and has a head cover portion 31 and a cylindrical cover portion 32. The head cover portion 31 is disposed at the tip (upper end) of the shower head 2. The cylindrical cover portion 32 is formed in a cylindrical shape and extends downward from the lower end portion of the head cover portion 31. The head cover part 31 constitutes a water spray part, and the cylindrical cover part 32 constitutes a grip part.

The cover member 3 is disposed in a forward inclined posture in which the head cover portion 31 on the distal end side is inclined to the front side F in a state where the shower head 2 is hooked on the shower hook 13.
The head cover portion 31 of the cover member 3 has a circular cover member opening 31 a on the front side F. A circular water spray plate 4 is attached to the cover member opening 31a so as to close the cover member opening 31a.
The watering plate 4 has a plurality of watering holes 41 penetrating the watering plate 4 in the thickness direction. The plurality of water spray holes 41 are formed in almost the entire area of the water spray plate 4.

The water spray plate adapter 5 is disposed inside the head cover portion that is the tip end side of the cover member 3. The water spray plate adapter 5 allows hot water flowing through the inside of a water passage forming member 6 described later to flow toward the water spray plate 4.
The sprinkling plate adapter 5 includes a water flow guide cylindrical portion 51 and a flow passage expanding portion 52.
The water flow guide cylindrical portion 51 is formed in a cylindrical shape. The upstream end portion of the water flow guide tubular portion 51 is connected to the downstream end portion of the water flow path forming member 6 described later.
The flow path expanding part 52 is connected to the downstream end of the water flow guide cylindrical part 51, and spreads the hot water guided by the water flow guide cylindrical part 51 in the space on the back side of the water spray plate 4. Then, it guides to the plurality of water spray holes 41 of the water spray plate 4. Hot water guided to the plurality of water spray holes 41 is sprinkled from the surface side of the water spray plate 4.

  The water flow path forming member 6 is connected to the lower end portion of the water spray plate adapter 5. The water passage forming member 6 forms a water passage through which hot water flows. The water passage forming member 6 is formed in a cylindrical shape extending in the up-down direction Z, and is almost entirely disposed inside the cover member 3, and the lower end portion of the water passage forming member 6 extends downward from the lower end portion of the cover member 3. It is arranged at a position protruding.

  At this time, it is preferable that the water flow path forming member 6 protrudes upstream from the cover member 3 to an extent that enables engagement with the hose connecting member 112 on the hose portion 11 side. When using the elongate water passage forming member 6 as in this embodiment illustrated in FIG. 1, leave about 10% of the end in the longitudinal direction from the viewpoint of connection strength with the hose portion 11. It is preferable that 70% or more, preferably 80% or more of the longitudinal direction is inserted into the cover member 3. Hot water is circulated inside the water passage forming member 6 from the upstream side toward the downstream side. In the present embodiment, the upper side and the lower side of the shower head 2 are the upper side and the lower side when the shower head 2 is hooked on the shower hook 13 (see FIG. 1). Therefore, in the present embodiment, the lower side of the water passage forming member 6 is an upstream side in the flowing direction of hot water, and the upper side of the water passage forming member 6 is a downstream side in the flowing direction of hot water.

  As shown in FIG. 2 and FIG. 3, at the upstream end of the water passage forming member 6, an outer peripheral screw part 61, an O-ring locking part 62, a water passage forming member side flange part 63, and a first A pair of water passage forming member side air introduction holes 64 and 64 as air introduction holes are formed.

  The outer peripheral thread portion 61 is formed on the outer peripheral surface of the upstream end portion of the water passage forming member 6, and when the water passage forming member 6 is connected to the hose portion 11, as shown in FIG. The hose connecting member 112 is screwed into the hose side threaded portion 112a.

  As shown in FIG. 3, the O-ring locking portion 62 is formed adjacent to the downstream side of the outer peripheral screw portion 61. An O-ring 621 is disposed in the O-ring locking portion 62.

  The water passage forming member side flange portion 63 is formed adjacent to the downstream side of the O-ring engaging portion 62 and is formed so as to project annularly from the outer peripheral surface of the water passage forming member 6 in the radial direction of the water passage forming member 6. Is done. On the front side F of the water passage forming member side flange portion 63, two concave portions 631 and 631 that are recessed in the radial direction from the outer peripheral surface of the water passage forming member side flange portion 63 are formed.

  The two concave portions 631 and 631 are arranged in the circumferential direction across the vertical wall groove portion 632 extending in the axial direction of the water passage forming member 6 on the outer peripheral surface of the water passage forming member 6 on the front side F in the water passage forming member side flange portion 63. They are arranged side by side at a distance. An external communication air introduction hole 301 (see FIG. 6) as a second air conduction hole described later is formed in a portion between the two recesses 631 and 631 and the inner peripheral surface of the cover member 3.

  As shown in FIGS. 3 and 4, the pair of water passage formation member-side air introduction holes 64, 64 communicate the inside and the outside of the water passage formation member 6. The pair of water passage forming member-side air introduction holes 64, 64 are disposed on the upper surface of the water passage forming member-side flange 63 so as to be separated from each other in the left-right direction X of the water passage forming member 6. It penetrates in the front-back direction of the water flow path forming member 6 in the tangent of the inner peripheral surface.

  As shown in FIG. 4, the pair of water passage forming member side air introduction holes 64 and 64 have a pair of side surface openings 641 and 641 and an inner surface opening 642, respectively. The pair of side surface openings 641 and 641 are openings formed on the peripheral surfaces of both end portions in the front-rear direction of the water passage forming member 6 in the through holes formed along the tangent line of the inner peripheral surface of the water passage forming member 6. Communicate in the front-rear direction so as to connect each other. The inner surface opening 642 is an opening formed on the inner peripheral surface of the water passage forming member 6 and communicates with the pair of side surface openings 641 and 641.

  An orifice member 7 to be described later is the most upstream of the water passage forming member 6 at the edge 642a (the inner peripheral edge of the water passage of the water passage forming member 6) on the lower side of the inner surface opening 642 in the water passage forming member side air introduction hole 64. By being inserted from the end portion side, a pair of orifice member mounting engagement portions (engagement portions) 724 and 724 of the orifice member 7 described later can be engaged and disengaged.

  The orifice member 7, which is a throttle member, is installed in the vicinity of the uppermost stream side end of the water passage forming member 6. The orifice member 7 is disposed adjacent to the end portion on the most upstream side of the water flow path forming member 6. As shown in FIGS. 2 and 3, the orifice member 7 is disposed inside the water passage forming member 6 in the vicinity of the upstream end portion of the water passage forming member 6, and flows through the inside of the water passage forming member 6. It is a member that restricts the flow path of hot water. The orifice member 7 is detachable from the water passage forming member 6 by having a pair of orifice member mounting engaging portions 724 and 724 (described later) that can be engaged with and disengaged from the water passage forming member side air introduction hole 64. Composed. In the present embodiment, the upstream end portion 7a of the orifice member 7 is disposed so as to be located on the inner diameter side and downstream of the upstream end portion 6a of the water passage forming member 6, so that the coupling strength is increased. Are better. Note that “the vicinity of the upstream end portion” does not necessarily mean that the upstream end portion 6 a of the water flow path forming member 6 and the upstream end portion 7 a of the orifice member 7 are exactly coincident with each other. In consideration of ease of taking out during maintenance, the upstream end portion 7a of the orifice member 7 is preferably close to the upstream end portion 6a of the water passage forming member 6 in a range of about 0 to 10 mm. . The orifice member 7 may be entirely accommodated in the water passage forming member 6, or a part of the orifice member 7 may be exposed.

  As shown in FIGS. 3 and 5, the orifice member 7 includes a nozzle member 71 that is disposed on the upstream side and narrows the flow path, and a diffuser member 72 that is disposed on the downstream side and expands the flow path. The orifice member 7 is configured as a unit by a nozzle member 71 and a diffuser member 72. The nozzle member 71 and the diffuser member 72 are each formed in a cylindrical shape penetrating in the axial direction. The hollow portions of the nozzle member 71 and the diffuser member 72 constitute a flow path through which hot water flows. The nozzle member 71 and the diffuser member 72 are arranged inside the water passage forming member 6 in a state of being combined as the orifice member 7, and hot water flows therethrough.

As shown in FIG. 5, the nozzle member 71 is connected to the nozzle-side introduction cylindrical portion 711 and the downstream side of the nozzle-side introduction cylindrical portion 711 in order from the upstream side to the downstream side, and from the upstream side to the downstream side. A nozzle-side diameter-reduced cylindrical part 712 whose flow path becomes narrower as it goes toward the nozzle side, and a nozzle-side downstream-side cylindrical part 713 connected to the downstream side of the nozzle-side diameter-reduced cylindrical part 712 are formed.
The cross-sectional shape of the inner peripheral surface orthogonal to the flowing direction of hot water in the nozzle side introduction cylindrical portion 711, the nozzle side reduced diameter cylindrical portion 712, and the nozzle side downstream cylindrical portion 713 is formed in a circular shape. That is, in this embodiment, the hot water flow path in the nozzle side introduction cylindrical portion 711, the nozzle side reduced diameter cylindrical portion 712, and the nozzle side downstream cylindrical portion 713 is configured by a hollow portion penetrating in the axial direction. .

Hot water introduced from the upstream end of the water passage forming member 6 is introduced into the nozzle side introduction cylindrical portion 711.
The nozzle-side reduced diameter cylindrical portion 712 has a narrower channel as the flow channel through which the hot water flows from the upstream side toward the downstream side, and increases the flow rate of the hot water.
The nozzle-side downstream tubular portion 713 is connected to a diffuser-side upstream connection tubular portion 721 of a diffuser member 72 described later.

A pair of positioning protrusions 714 and 714 that protrude from the outer surface in the left-right direction of the nozzle-side downstream tubular portion 713 are formed at the downstream end of the nozzle-side downstream tubular portion 713.
As shown in FIGS. 5 and 9, the pair of positioning protrusions 714 and 714 are formed to have a predetermined width, and from the outer surface of the nozzle-side downstream tubular portion 713, the nozzle-side downstream tubular portion 713. Projecting away from each other in the radial direction. When the nozzle member 71 is attached to the diffuser member 72, the pair of positioning protrusions 714 and 714 are restricted from moving in the circumferential direction by the pair of positioning portions 728 and 728 formed on the inner peripheral surface of the diffuser member 72. Thus, the circumferential position is restricted.

  Specifically, the pair of positioning portions 728 and 728 of the diffuser member 72 are opposed to each other on the inner peripheral surface of the diffuser member 72 corresponding to the pair of positioning protrusions 714 and 714, as shown in FIG. Arranged. The positioning portion 728 is a pair of positioning members when the nozzle member 71 is attached to the diffuser member 72 among the plurality of protruding pieces 727 that protrude from the inner peripheral surface of the diffuser member 72 and are spaced apart in the circumferential direction. It is comprised by a pair of protrusion piece 727,727 arrange | positioned at the both sides of the width direction of the protrusion parts 714 and 714, and the movement of the circumferential direction of the positioning protrusion part 714 is controlled.

An O-ring engagement portion 715, a nozzle member side flange portion 716, and a pair of nozzle member side engagement portions 717 and 717 are formed at the upstream end portion of the nozzle member 71.
The O-ring locking portion 715 is formed slightly upward from the upstream end portion of the nozzle member 71. An O-ring 715 a is disposed in the O-ring locking portion 715.
The nozzle member side flange portion 716 is formed adjacent to the downstream side of the O-ring locking portion 715, and on the outer peripheral surface of the nozzle member 71, the nozzle side introduction tubular portion 711 and the nozzle side reduced diameter tubular portion 712 are formed. Arranged between. The nozzle member side flange portion 716 is formed to project from the outer peripheral surface of the nozzle member 71 in an annular shape in the radial direction of the nozzle member 71.

The pair of nozzle member side engaging portions 717 and 717 are formed at a nozzle member side extending portion 717 a extending upward from the upper surface of the nozzle member side flange portion 716 and an upper end portion of the nozzle member side extending portion 717 a. Nozzle member side claw portion 717b.
Each of the pair of nozzle member side engaging portions 717 and 717 can be deformed to the center side in the radial direction of the water passage forming member 6 with an elastic return force.
When the nozzle member 71 is attached to the diffuser member 72, the nozzle member side claw portion 717b can be engaged with and disengaged from a lower edge portion 726a of a pair of nozzle member attachment openings 726 and 726 described later.

As shown in FIG. 5, the diffuser member 72 includes, in order from the upstream side to the downstream side, the diffuser-side upstream connection cylindrical portion 721, the diffuser-side upstream introduction cylindrical portion 722, and the upstream side to the downstream side. A diffuser-side downstream-side diameter-enlarged cylindrical portion 723 whose flow path expands as it goes is formed.
The cross-sectional shape of the inner peripheral surface orthogonal to the flowing direction of the hot water in the diffuser side upstream connecting cylindrical portion 721, the diffuser side upstream introducing cylindrical portion 722, and the diffuser side downstream diameter expanding cylindrical portion 723 is formed in a circular shape. Is done. That is, in the present embodiment, the hot water flow paths in the diffuser side upstream connecting cylindrical portion 721, the diffuser side upstream introducing cylindrical portion 722, and the diffuser side downstream diameter expanding cylindrical portion 723 are hollow that penetrates in the axial direction. It consists of parts.

When the nozzle member 71 is attached to the diffuser member 72, the nozzle side downstream cylindrical portion 713 of the nozzle member 71 is inserted into the diffuser side upstream connection cylindrical portion 721.
Hot water is introduced into the diffuser side upstream introduction cylindrical portion 722 so that the flow path is narrowed by the nozzle side reduced diameter cylindrical portion 712 of the nozzle member 71.
The diffuser side downstream diameter-expanding cylindrical portion 723 expands the hot water introduced from the diffuser side upstream side introduction cylindrical portion 722.

  The diffuser side upstream connection tubular portion 721 includes a pair of orifice member mounting engaging portions 724 and 724 that can be engaged with and disengaged from the water passage forming member side air introduction hole 64 of the water passage forming member 6, and a pair of orifice sides Air introduction holes 725 and 725 and a pair of nozzle member attachment openings 726 and 726 are formed.

  The pair of nozzle member side claw portions 717b and 717b of the nozzle member 71 are engaged with the lower edge portion 726a of the pair of nozzle member mounting openings 726 and 726. The pair of nozzle member mounting openings 726 and 726 are formed by opening the peripheral surface of the diffuser member 72 in a rectangular shape and penetrating the pair of nozzle member side engaging portions 717 and 717 on the peripheral surface of the diffuser member 72. They are formed opposite to each other at corresponding positions.

  The pair of orifice-side air introduction holes 725 and 725 are formed to open through the peripheral surface of the diffuser member 72 in a rectangular shape, and are provided in a pair spaced apart in the left-right direction X on the peripheral surface of the diffuser member 72.

The pair of orifice member mounting engagement portions 724 and 724 respectively include an orifice member mounting extension portion 724a extending upward from the lower edge of the orifice-side air introduction hole 725, and an orifice member mounting extension. And an orifice member attaching claw portion 724b formed at the upper end portion of the protruding portion 724a.
Each of the pair of orifice member mounting engaging portions 724 and 724 can be deformed to the center side in the radial direction of the water flow path forming member 6 with an elastic return force.
As shown in FIGS. 4, 6, and 7, the orifice member attaching claw portion 724 b has a water passage forming member-side air introduction hole of the water passage forming member 6 when the orifice member 7 is attached to the water passage forming member 6. It is possible to engage with and disengage from the edge 642a of the 64 inner surface openings 642.

  The orifice member 7 configured as described above is disposed in the vicinity of the upstream end portion of the water passage forming member 6 and is configured to be detachable from the water passage forming member 6, so that the maintainability can be improved. . Further, by attaching or detaching the orifice member 7, another orifice having a different size or number of orifice-side air introduction holes 725 in consideration of the amount of air to be introduced, the comfort of hot water, the amount of water to be saved, etc. Can be replaced with a member.

  Further, the orifice member attaching claw portion 724b is engaged with the edge portion 642a of the inner surface opening 642 of the water passage forming member side air introduction hole 64 of the water passage forming member 6 as shown in FIGS. It is possible to attach the orifice member 7 to the water passage forming member 6 simply by making it. Therefore, the orifice member 7 can be attached to the water passage forming member 6 using the air passage forming member side air introduction hole 64 of the water passage forming member 6, so that the engagement with the claw portion 724 b for attaching the orifice member is possible. It is not necessary to provide the part in the water passage forming member 6. Therefore, since it is not necessary to provide the engaging part which engages with the claw part 724b for attaching the orifice member, the cost required for the water passage forming member 6 can be reduced.

  In addition, the orifice member 7 includes a nozzle member-side claw portion 717b of the nozzle member 71 in which the nozzle-side downstream tubular portion 713 of the nozzle member 71 is inserted into the diffuser-side upstream connection tubular portion 721 of the diffuser member 72. Are united by being engaged with and attached to the lower edge portion 726a of the nozzle member attachment opening 726 of the diffuser member 72.

  The orifice member 7 is detachable from the water passage forming member 6 in the uppermost stream of the water passage forming member 6 in a united state in which the nozzle member 71 and the diffuser member 72 are integrated. Specifically, the orifice member 7 is a united state in which the nozzle member 71 and the diffuser member 72 are integrated, and the orifice member mounting claw portion 724b of the orifice member 7 has a water passage forming member side air introduction hole. 64 is engaged.

Here, the advantage by having comprised the orifice member 7 by two members, the nozzle member 71 and the diffuser member 72, is demonstrated.
For example, when a plurality of orifice-side air introduction holes are formed in an orifice member constituted by a single member, the number of holes to be formed is limited because the strength of the orifice member decreases as the number of holes increases. The When the strength of the orifice member is weakened, the orifice member 7 disposed at the end on the most upstream side of the water passage forming member 6 may be damaged when the hose portion 11 is attached or removed.

On the other hand, in the present invention, the orifice member 7 is composed of two members, a nozzle member 71 and a diffuser member 72, and the nozzle member 71 is integrally configured to be detachable from the diffuser member 72. Unitized. For example, in the present embodiment, a plurality of orifice-side air introduction holes 725 are provided on the diffuser member 72 side, and the nozzle member 71 is engaged with the diffuser member 72. As a result, even if the plurality of orifice-side air introduction holes 725 are provided in the diffuser member 72, the vicinity of the plurality of orifice-side air introduction holes 725 of the diffuser member 72 is reinforced by the nozzle member 71 attached to the diffuser member 72. The strength of the member 7 can be ensured.
As a result, by configuring the orifice member 7 with two members, the nozzle member 71 and the diffuser member 72, the strength of the orifice member 7 can be ensured even if a plurality of orifice-side air introduction holes 725 are provided. It is possible to sufficiently introduce air into the orifice member 7 through the plurality of orifice-side air introduction holes 725 while maintaining the above strength.

  As shown in FIGS. 6 and 8, an external communication air introduction hole 301 as a second air introduction hole is formed between the cover member 3 and the two recesses 631 and 613 of the water passage forming member 6. The external communication air introduction hole 301 communicates the water passage forming member side air introduction hole 64 and the outside of the cover member 3. The external communication air introduction hole 301 is disposed on the front side F of the shower head 2.

  The orifice-side air introduction hole 725, the water passage forming member side air introduction hole 64, and the external communication air introduction hole 301 also serve as a drainage hole for discharging water that returns from the downstream side to the upstream side in the water passage formation member 6.

Next, the operation of the shower head 2 will be described.
For example, by operating a lever (not shown) for starting the supply of hot water to the start position, the hot water W supplied from the hose portion 11 to the shower head 2 is supplied to the water passage forming member 6 as shown in FIG. It is supplied and reaches the orifice member 7 attached to the inside of the water passage forming member 6. The hot and cold water W that has reached the orifice member 7 flows into the nozzle member 71 of the orifice member 7. The hot water W passing through the flow path having a reduced cross-sectional area in the nozzle member 71 reaches a diffuser member 72 arranged on the downstream side of the nozzle member 71 with an accelerated flow velocity. The hot water W that has reached the diffuser member 72 expands by passing through a flow passage having a cross-sectional area enlarged (expanded diameter) in the diffuser member 72.

  Here, in the orifice member 7, the flow path of the hot and cold water W is throttled to accelerate the flow velocity, whereby the inside of the orifice member 7 becomes negative pressure. Therefore, as shown in FIGS. 7 and 8, the orifice member 7 has an external communication air introduction hole 301 formed between the cover member 3 and the water passage forming member 6, and the passage of the water passage forming member 6. Air A outside the shower head 2 is sucked into the orifice member 7 through the water passage forming member side air introduction hole 64 and the orifice side air introduction hole 725 of the orifice member 7. Air A is introduced.

  Thereby, the air A introduced from the outside is mixed with the hot water W flowing through the orifice member 7. The hot water WA mixed with air is discharged from the plurality of water spray holes 41 of the water spray plate 4 through the water passage forming member 6 and the water spray plate adapter 5 (see FIG. 1).

  Thereafter, by operating a lever (not shown) for stopping the supply of hot water to the stop position, hot water from the faucet (not shown) supplied to the shower head 2 is stopped. During or after the supply of hot water, the shower head 2 is hooked on the shower hook 13 as shown in FIG.

  Here, in the present embodiment, the external communication air introduction hole 301 that introduces air into the orifice member 7, the water passage formation member side air introduction hole 64 of the water passage formation member 6, and the orifice side air of the orifice member 7. Since the introduction hole 725 is disposed at the upstream end of the shower head 2, the introduction hole 725 is positioned at the lower end in the vertical direction Z when the shower head 2 is hooked on the shower hook 13. Therefore, the hot water remaining in the water spray plate adapter 5 and the water passage forming member 6 of the shower head 2 is likely to move downward due to gravity, and the water head pressure is easily applied by the hot water remaining in the water passage forming member 6. , Moved to the external communication air introduction hole 301 for introducing air into the orifice member 7, the water passage formation member side air introduction hole 64 of the water passage formation member 6, and the orifice side air introduction hole 725 of the orifice member 7, It is discharged outside. As a result, when the supply of hot water is stopped, it is possible to prevent hot water from dripping from the plurality of water spray holes 41 of the water spray plate 4.

  Further, since the shower head 2 is tilted forward and is hooked on the shower hook 13, the hot water remaining in the shower head 2 easily moves to the front side of the shower head 2. In the present embodiment, the external communication air introduction hole 301 is disposed on the front side of the shower head 2. Thereby, the hot water remaining in the shower head 2 can be easily discharged to the outside.

The shower head 2 according to the present embodiment described above has the following effects.
The shower head 2 according to the present embodiment has a cover member 3 and at least a part of the shower head 2 disposed inside the cover member 3 to form a water passage through which water flows and a water passage forming member-side air introduction hole 64. A water passage forming member 6 and an orifice member 7 that is disposed in the vicinity of the most upstream end of the water passage forming member 6 and circulates inside the water passage forming member 6. The water passage forming member 6 is configured to be detachable.
Therefore, the orifice member 7 can be easily attached and detached from the end portion side on the most upstream side of the water passage forming member 6. Thereby, since assembly | attachment to the water flow path formation member 6 of the orifice member 7 becomes easy, a maintainability can be improved. In addition, since the orifice member 7 is configured to be detachable from the water passage forming member 6, the size of the orifice-side air introduction hole 725 is taken into consideration in consideration of the amount of air to be introduced, the comfort of hot water, the amount of water to be saved, and the like. It can be replaced with another orifice member having a different number of sheaths.

  Further, in the present embodiment, the orifice member 7 is configured as a unit by a nozzle member 71 disposed on the upstream side and narrowing the flow path, and a diffuser member 72 disposed on the downstream side and widening the flow path. The Therefore, by configuring the orifice member 7 with two members of the nozzle member 71 and the diffuser member 72, the strength of the orifice member 7 can be ensured even if a plurality of orifice-side air introduction holes 725 are provided. Thereby, air can be sufficiently introduced into the orifice member 7 through the plurality of orifice-side air introduction holes 725 while maintaining the strength of the orifice member 7. Further, by configuring the orifice member 7 with two members of the nozzle member 71 and the diffuser member 72, the orifice member 7 can be disposed on the bent water passage forming member 6 even if the water passage forming member 6 is bent.

  Further, in the present embodiment, the orifice member 7 has an orifice member attaching engagement portion 724 that can be engaged with and disengaged from the water passage forming member side air introduction hole 64. Therefore, the orifice member 7 can be attached to the water passage forming member 6 using the air passage forming member side air introduction hole 64 of the water passage forming member 6, so that the engagement with the claw portion 724 b for attaching the orifice member is possible. It is not necessary to provide the part in the water passage forming member 6. Therefore, since it is not necessary to provide the engaging part engaging with the claw part 724b for attaching the orifice member by using the air introduction hole 64 of the water passage forming member 6 of the water passage forming member 6, the water passage forming member 6 Manufacturing costs can be reduced.

  Further, in the present embodiment, the external communication air introduction hole 301 is formed between the cover member 3 and the water passage forming member 6 and communicates the water passage formation member side air introduction hole 64 and the outside of the cover member 3. The water passage forming member-side air introduction hole 64 and the external communication air introduction hole 301 also serve as a drainage hole for discharging water that returns the inside of the water passage forming member 6 from the downstream side to the upstream side. Therefore, when the supply of hot water to the shower head 2 is stopped, the hot water remaining in the shower head 2 easily moves downward due to gravity, and the hot water remaining in the water passage forming member 6 Since pressure is easily applied, it is easy to move to the external communication air introduction hole 301 into which air has been introduced into the orifice member 7 and the water passage formation member side air introduction hole 64 of the water passage formation member 6 and can be easily discharged to the outside. As a result, when the supply of hot water is stopped, it is possible to prevent hot water from dripping from the tip side of the shower head 2 (the plurality of water spray holes 41 of the water spray plate 4).

  Further, in the present embodiment, the external communication air introduction hole 301 is formed between the cover member 3 and the water passage forming member 6 and communicates the water passage formation member side air introduction hole 64 and the outside of the cover member 3. The external communication air introduction hole 301 is disposed on the front side of the shower head 2. Here, when the shower head 2 is tilted forward and is hooked on the shower hook 13, the hot water remaining in the shower head 2 easily moves to the front side of the shower head 2. Therefore, by arranging the external communication air introduction hole 301 on the front side F of the shower head 2, the hot water remaining inside the shower head 2 can be easily discharged to the outside.

The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the said embodiment, although it comprised so that substantially the whole water flow path formation member 6 might be arrange | positioned inside the cover member 3, it is not limited to this. The water passage forming member 6 disposed inside the cover member 3 may be at least a part of the water passage forming member 6 or the whole water passage forming member 6.

  Moreover, in the said embodiment, although the orifice member 7 (throttle member) was comprised so that attachment or detachment was possible to the water flow path formation member 6 of the shower head 2, it is not limited to this. For example, you may arrange | position a throttle member so that attachment or detachment is possible with respect to water flow paths other than a shower head (for example, spout etc.).

  Moreover, in the said embodiment, although the external communication air introduction hole 301 was arrange | positioned in the front side F of the shower head 2, it is not limited to this. For example, the external communication air introduction holes 301 may be arranged on the rear side R of the shower head 2, or the external communication air introduction holes 301 may be arranged on both the front side F and the rear side R of the shower head 2. When the external communication air introduction hole 301 is arranged on the rear side R of the shower head 2, hot water is discharged from the rear side R of the shower head 2 through the external communication air introduction hole 301 to the outside. The discharged hot water is less noticeable and can improve the appearance.

  Moreover, in the said embodiment, although the engaging part was comprised by the nail | claw part, it is not limited to this, The engaging part may not be the shape of a nail | claw. Moreover, you may fix by press-fit etc. instead of engaging by an engaging part.

  Moreover, in the said embodiment, although the water flow path of the nozzle side diameter reduction cylindrical part 712 was comprised so that the flow path of water might be restrict | squeezed by restrict | squeezing the diameter of one circular opening, it is not limited to this. As a configuration for narrowing the water flow path, it may be configured to narrow the water flow path by providing one opening having a small cross-sectional area, or by narrowing the water flow path by providing a plurality of openings having a small cross-sectional area. You may comprise as follows.

DESCRIPTION OF SYMBOLS 1 Shower head apparatus 2 Shower head 3 Cover member 6 Water flow path formation member 7 Orifice member (throttle member)
64 Water passage forming member side air introduction hole (first air introduction hole)
71 Nozzle member 72 Diffuser member 301 External communication air introduction hole (second air introduction hole)
724 Orifice member mounting engagement part (engagement part)
724b Orifice member mounting claw (claw)
F front

Claims (7)

A cover member;
A water passage forming member having at least a portion disposed inside the cover member, forming a water passage through which water flows, and having a first air introduction hole;
A throttle member that is disposed in the vicinity of the upstream end portion of the water passage forming member and restricts a flow path of water that circulates inside the water passage forming member.
The said throttle member is a shower head comprised so that attachment or detachment with respect to the said water flow path formation member is possible.   2. The shower head according to claim 1, wherein the throttle member is configured as a unit by a nozzle member that is disposed on the upstream side and narrows the flow path, and a diffuser member that is disposed on the downstream side and expands the flow path.   The shower head according to claim 1, wherein the throttle member has an engaging portion that can be engaged with and disengaged from the first air introduction hole.   4. The apparatus according to claim 1, further comprising a second air introduction hole that is formed between the cover member and the water passage forming member and communicates the first air introduction hole and the outside of the cover member. 5. shower head.   5. The shower head according to claim 4, wherein the first air introduction hole and the second air introduction hole also serve as a drainage hole for discharging water returning from the downstream side to the upstream side in the water passage forming member.   The shower head according to claim 4 or 5, wherein the second air introduction hole is disposed on a front side and / or a rear side of the shower head. A throttling member that forms a water passage through which water flows and is arranged in a water passage forming member having a first air introduction hole, and squeezes a water flow path through the inside of the water passage forming member,
The said throttle member is a throttle member comprised so that attachment or detachment is possible with respect to the said water flow path formation member by having a nail | claw part which can be engaged / disengaged in the said 1st air introduction hole.

Images