JP2019027257A - Water discharge part and faucet device - Google Patents

Abstract

To provide a technique capable of securing a cross-sectional area of a water hole while miniaturizing a water passage forming member.SOLUTION: The present invention comprises a water passage forming member 62 extending in an axial direction, a first water hole 94 and a second water hole 95 formed in the water passage forming member 62, a water passage provided on one side in the axial direction with respect to the water passage forming member 62 and allowing water to flow into the respective inlets of the first water hole 94 and the second water hole 95, and a valve body capable of opening and closing an inlet of the second water hole 95. Centers Cb1 and Cb2 of the first water hole 94 and the second water hole 95 are eccentric with respect to an outer shape center Cb0 of the water passage forming member in a cross section orthogonal to the axial direction of the water passage forming member 62. No hollow is formed in the water passage forming member 62 in directions Py1 and Py2 in which the water holes are eccentric from the outer shape center Cb0 with respect to the first water hole 94 and the second water hole 95, respectively.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a water discharge part and a faucet device using the same.

  Conventionally, a water discharge component capable of switching the water discharge mode has been proposed. Patent Document 1 discloses a water discharge component that holds a rotary handle rotatably on a joint member and moves a switching member disposed inside the handle up and down by rotating the handle. In this water discharge component, the water discharge mode is switched between shower water discharge and straight water discharge by the lifting and lowering operation of the switching member. The switching member of the water discharge part is formed with a first water flow hole for shower water discharge and a second water flow hole for straight water discharge. In this switching member, the first water passage hole and the second water passage hole have a concentric double cylinder structure.

JP 2008-303658 A

  The water channel forming member such as the switching member described above has a demand for miniaturization from the viewpoint of design. On the other hand, if the size of the water channel forming member is reduced, the cross-sectional area of the water passage hole is reduced, and it becomes difficult to secure the flow rate of water passing through the water passage hole. In particular, in the case where the inlet of the water passage hole formed in the water channel forming member is opened and closed by a valve body, the wall portion forming the inlet needs to be thickened, so that the cross-sectional area of the water passage hole is further reduced. It becomes easy to do. Under such a case, a technique for reducing the size of the water channel forming member and securing the cross-sectional area of the water passage hole has not yet been proposed.

  An aspect of the present invention is made in view of such a problem, and one of the purposes is to provide a technique capable of ensuring the cross-sectional area of the water passage hole while reducing the size of the water channel forming member.

  The first aspect of the present invention is a water discharge component. The water discharge component of the first aspect includes a water channel forming member extending in the axial direction, a first water flow hole and a second water flow hole formed in the water channel forming member, and one of the axial directions with respect to the water channel forming member. A water passage for allowing water to flow into each inlet of the first water hole and the second water hole, and a valve body capable of opening and closing the inlet of the second water hole. The center of each of the first water passage hole and the second water passage hole is eccentric with respect to the outer shape center of the water passage forming member in a cross section perpendicular to the axial direction of the water passage forming member, In the water channel forming member, no cavity is formed in each of the first water hole and the second water hole in a direction in which the water hole is eccentric from the center of the outer shape.

  According to the 1st mode, compared with the case where the 1st water hole and the 2nd water hole constitute a concentric double cylinder structure, a part of wall part required in order to constitute a double cylinder structure can be omitted. It becomes like this. Thereby, compared with the case where a water channel formation member comprises a double cylinder structure, it becomes easy to design so that the cross-sectional area of a 1st water flow hole and a 2nd water flow hole may be ensured, reducing a water channel formation member. .

It is a side view of the water discharging apparatus of this embodiment. It is a figure which shows the state with which the water discharging head of this embodiment was mounted | worn with the apparatus main body. It is a partial expanded sectional view of the water discharging apparatus of this embodiment. It is side surface sectional drawing of the water discharging head of this embodiment. It is a figure which shows how the water flows in the 2nd water channel formation member and 3rd water channel formation member of this embodiment. It is a figure which shows a part of base end side end surface of the 2nd water channel formation member of this embodiment. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. It is the figure which looked at the water discharging head from the arrow Xa of FIG. FIG. 10A is a cross-sectional view of the water channel forming member of the reference example, and FIG. 10B is a diagram of the water channel forming member of the reference example viewed from the same viewpoint as FIG. (C) is sectional drawing of the water channel formation member of other embodiment, and FIG.10 (d) is a figure for demonstrating the effect regarding the water channel formation member of other embodiment.

First, it demonstrates from the background which came to conceive the water discharging components of this embodiment.
FIG. 10A is a cross-sectional view showing a water channel forming member 200 of a reference example. In this figure, the cross section orthogonal to the axial direction of the water channel formation member 200 is shown. The water channel forming member 200 of this example has a double cylinder structure in which a first water flow hole 202 on the outer peripheral side and a second water flow hole 204 on the inner peripheral side are formed concentrically. The water channel forming member 200 of the present example includes a cylindrical outer peripheral wall portion 206 and a cylindrical partition wall portion 208 that separates the first water passage hole 202 and the second water passage hole 204.

  FIG.10 (b) is the figure which looked at the end surface of the water channel formation member 200 from the same viewpoint as Fig.10 (a). The 2nd water flow hole 204 has the 2nd inflow port 204a into which water flows in from the upstream waterway. The 2nd inflow port 204a can be opened and closed by the valve body 210 seated on the peripheral part of the 2nd inflow port 204a. In this figure, the seating location of the valve body 210 is shown.

  Under this structure, it is required to secure a contact area with respect to the seating location of the valve body 210 from the viewpoint of ensuring the sealing performance when the valve body 210 is closed. Along with this, it is necessary to increase the thickness of the wall portion (partition wall portion 208) that forms the second inflow port 204a, and the ratio of the partition wall portion 208 to the entire cross section of the water channel forming member 200 increases. As a result, it is difficult to secure the cross-sectional areas of the water passage holes 202 and 204 while reducing the outer diameter of the water channel forming member 200.

  Further, when a seal member such as an O-ring is attached to the outer peripheral surface portion of the water channel forming member 200, not only the partition wall portion 208 but also the outer peripheral wall portion 206 has a strength against the elastic force applied from the seal member. Thickening is also required. Along with this, the proportion of the outer peripheral wall portion 206 in the entire cross section of the water channel forming member 200 also increases, and the aforementioned problem is promoted.

  FIG.10 (c) is a figure which shows an example of the water channel formation member 212 which can aim at this countermeasure. In this example, a water channel forming member 212 according to an embodiment different from the embodiment described later is shown. The centers Ca <b> 1 and Ca <b> 2 of the first water passage hole 202 and the second water passage hole 204 in this example are eccentric with respect to the outer shape center Ca <b> 0 of the water channel forming member 200. Further, in the water channel forming member 200, cavities are not formed in the eccentric directions Px1 and Px2 of the water passage holes 202 and 204 with respect to the first water passage hole 202 and the second water passage hole 204, respectively. The center of the outer shape in this specification refers to the center of gravity of the shape formed by the outer peripheral surface of the water channel forming member referred to. Moreover, the eccentric direction in this specification means the direction which goes to the center of the water flow hole (cavity) referred from the external shape center of the water channel formation member referred to. In addition, the center of the water passage hole (cavity) in this specification refers to the center of gravity of the shape formed by the inner peripheral surface of the component referred to.

  In this case, it is not necessary to form the partition wall portion 208 separately from the outer peripheral wall portion 206 over the entire circumference around the center Ca2 of the water passage hole 204 as in the above-described double cylinder structure. Therefore, as shown in FIG. 10 (d), it is possible to omit a part Sb of the partition wall portion 208 which is necessary for forming the double cylinder structure. Thereby, compared with the case where the above-mentioned double cylinder structure is constituted, it becomes easy to design so as to secure the cross-sectional areas of the water passage holes 202 and 204 while reducing the outer diameter of the water channel forming member 212. Hereinafter, an example of an embodiment to which this idea is applied will be described.

  Hereinafter, in the embodiment and the modification, the same reference numerals are given to the same components, and the duplicate description is omitted. In the drawings, for convenience of explanation, some of the components are omitted as appropriate, and the dimensions of the components are appropriately enlarged and reduced.

  FIG. 1 is a side view of a water discharge device 10 of the present embodiment. 2 and 3 are enlarged cross-sectional views of a part of the water discharge device 10. FIG. 2 shows a state where the water discharge head 18 is attached to the apparatus main body 14, and FIG. 3 shows a state where the water discharge head 18 is pulled out from the apparatus main body 14.

  The water discharging apparatus 10 of this embodiment is installed on the surface of sinks, such as a kitchen. The water discharge device 10 mainly includes a device main body 14, a water supply hose 16, a water discharge head 18, and a sensor member 20. The apparatus main body 14 has a role of supporting the water discharge head 18 and the like. The apparatus main body 14 of this embodiment is comprised using the water discharge pipe 22 grade | etc.,. The water supply hose 16 is a flexible hose or the like, and is configured using a flexible material. The aforementioned water supply path 12 is formed inside the water supply hose 16. The water discharge head 18 is connected to the downstream end of the water supply hose 16.

  The water discharge head 18 can be pulled out and pushed back together with the water supply hose 16 with respect to the apparatus main body 14. The water discharge head 18 is capable of shower water discharge or straight water discharge from the water discharge port 42 for water flowing in from the water supply hose 16 on the water supply source side. “Shower water discharge” refers to a first water discharge mode in which water sent from the water supply source side is discharged as a plurality of water discharge flows in a shower shape. “Straight water discharge” refers to a second water discharge mode in which water sent from the water supply source side is discharged straight (as it is) as a single water discharge flow.

  The sensor member 20 is configured by housing the object detection sensor 24 and the like inside a sensor case. The sensor member 20 is accommodated in the apparatus main body 14. The object detection sensor 24 of the present embodiment is an infrared distance measuring sensor, that is, a photoelectric sensor. The object detection sensor 24 can detect the presence or absence of an object to be detected within a predetermined detection area 24a. The object detection sensor 24 accepts that an object is detected in the detection area 24 a as a switching operation for switching the operation state of the water discharge device 10. When the object detection sensor 24 receives a switching operation, a control unit (not shown) controls to open and close the on-off valve 40 (see also FIG. 1) provided in the water supply channel 12. Thereby, the operation state of the water discharging apparatus 10 is switched between the water discharging state and the water discharging stop state. Thus, the water discharging apparatus 10 of this embodiment functions as a water faucet apparatus which can switch a water discharge state and a water discharge stop state in response to a switching operation by a user.

  FIG. 4 is a side sectional view of the water discharge head 18. The water discharge head 18 includes a main body portion 46 in which a water discharge port 42 is formed and a water channel leading to the water discharge port 42 is formed therein, and a protrusion 48 that protrudes from the outer peripheral portion of the main body portion 46. The main body portion 46 of the present embodiment as a whole has a columnar shape extending in a first axial direction Pc described later. The protrusion 48 functions as a handle that the user has when pulling out and pushing back the water discharge head 18 with respect to the apparatus main body 14.

  The water discharge head 18 includes a case member 50, a water channel forming unit 52, and an operation unit 54.

  The case member 50 includes a cylindrical first case portion 50a and a cylindrical second case portion 50b protruding from the outer periphery of the first case portion 50a. The case member 50 has a hollow structure, and a continuous internal space is provided in the first case portion 50a and the second case portion 50b. The water discharge port 42 of the water discharge head 18 is formed in the front-end | tip part of the 1st case part 50a. The 2nd case part 50b makes bottomed cylindrical shape opened toward a front end side.

  Hereinafter, a direction along the central axis Lc of the first case portion 50a is referred to as a first axial direction Pc, and a radial direction of a circle centering on the central axis Lc is referred to as a first radial direction Pe. A direction along the central axis of the second case portion 50b is referred to as a second axial direction Pd. The first axial direction Pc is also the direction along the central axis Lc of each of the main body 46, the first water channel forming member 60, and the second water channel forming member 62.

  The water channel forming unit 52 is formed by unitizing a plurality of water channel forming members 60, 62, 64 that form a water channel leading to the water discharge port 42. The water channel forming unit 52 is accommodated in the first case portion 50 a of the case member 50. The water channel forming unit 52 is provided inside the main body 46 as a part of the main body 46 of the water discharge head 18.

  The operation unit 54 is obtained by unitizing the operation member 66 together with other members. The operation member 66 can be operated by receiving an external force to switch the open / close state of the valve body 102 of the valve mechanism 100 built in the water channel forming member 60. The operation unit 54 is accommodated in the second case portion 50 b of the case member 50. The operation unit 54 will be described later.

  The plurality of water channel forming members 60, 62, 64 are arranged in series in the first axial direction Pc of the first case portion 50a and are connected between the adjacent water channel forming members 60, 62, 64. The plurality of water channel forming members 60, 62, 64 include a first water channel forming member 60, a second water channel forming member 62, and a third water channel forming member 64 in order from the proximal end side to the distal end side in the first axial direction Pc. .

  The first water channel forming member 60 has a column shape extending in the first axial direction Pc. A connection hole 60 c to which the water supply hose 16 is connected via the coupler 44 is formed at the proximal end portion of the first water channel forming member 60. The first water channel forming member 60 is formed with a water channel 82 for allowing water flowing in from the water supply hose 16 to pass therethrough. The water passage 82 is provided on the base end side that is one side in the first axial direction Pc with respect to the second water passage forming member 62. The water passage 82 is for allowing water to flow into the inlets 94a and 95a of the first water passage 94 and the second water passage 95, which will be described later. The first water channel forming member 60 is provided with a barrier portion 84 on which water flowing from the water supply hose 16 collides. The barrier part 84 partitions the water passage 82 into an upstream part 82a and a downstream part 82b. A communication hole (not shown) that connects the upstream portion 82 a and the downstream portion 82 b of the water passage 82 is formed in the barrier portion 84. FIG. 4 shows the direction Pf of water passing through the communication hole for reference.

  The second water channel forming member 62 has a column shape extending in the first axial direction Pc. The second water channel forming member 62 includes a first outer diameter portion 62a, a second outer diameter portion 62b, and a third outer diameter portion 62c in order from the proximal end side to the distal end side in the first axial direction Pc. A first mounting groove 62d for mounting a first seal member 68 that is an elastic body such as an O-ring is formed in the first outer diameter portion 62a. A space between the first outer diameter portion 62 a and the first case portion 50 a of the case member 50 is sealed with a first seal member 68. The second outer diameter portion 62b is set to an outer diameter smaller than the first outer diameter portion 62a. The third outer diameter portion 62c is set to an outer diameter smaller than the first outer diameter portion 62a and the second outer diameter portion 62b. The third outer diameter portion 62c is formed with a second mounting groove 62e for mounting the second seal member 70, which is an elastic body such as an O-ring.

  The third water channel forming member 64 has a cylindrical portion 64a extending in the first axial direction Pc, and a plate-like water sprinkling portion 64b provided at the tip of the cylindrical portion 64a. A plurality of shower holes 64c penetrating the front and back are formed in the sprinkling portion 64b. The third outer diameter portion 62c of the second water channel forming member 62 is inserted into the tubular portion 64a. The space between the cylindrical portion 64a and the third outer diameter portion 62c is sealed by the second seal member 70.

  FIG. 5 is a diagram illustrating how water flows in the second water channel forming member 62 and the third water channel forming member 64. The second water channel forming member 62 is formed with a first water hole 94 through which water for shower water discharge passes and a second water hole 95 through which water for straight water discharge passes. The first water passage hole 94 extends along the first axial direction Pc, and a plurality of the first water passage holes 94 are formed in the second water channel forming member 62 (not shown in the figure). The second water passage hole 95 has an upstream portion 95c extending along the first axial direction Pc and a downstream portion 95d extending in the first radial direction Pe. The second water passage hole 95 is provided with a collision surface 95e that changes the flow direction so that water flowing through the upstream portion 95c collides and flows toward the downstream portion 95d.

  A first inflow port 94 a of the first water passage hole 94 and a second inflow port 95 a of the second water passage hole 95 are opened on the base end side end surface of the second water channel forming member 62 in the first axial direction Pc. A first outlet 94b of the first water passage hole 94 is opened on the end surface of the second water passage forming member 62 in the first axial direction Pc. A second outlet 95 b of the second water passage hole 95 opens on the outer peripheral surface of the second outer diameter portion 62 b of the second water channel forming member 62.

  The water passing through the first water flow hole 94 passes through a water spray chamber 96 formed between the second water channel forming member 62 and the third water channel forming member 64, and a plurality of showers serving as discharge channels for shower water discharge. It is guided to the hole 64c. The sprinkling chamber 96 has a larger cross-sectional area perpendicular to the first axial direction Pc than the first water passage hole 94.

  The water passing through the second water passage hole 95 is guided to the discharge channel 90 for straight water discharge. The discharge channel 90 is provided in an annular shape so as to surround the second water channel forming member 62 and the third water channel forming member 64. It can be said that the discharge flow path 90 is provided so as to surround the plurality of shower holes 64 c of the third water channel forming member 64.

  FIG. 6 is a diagram illustrating a part of the end surface on the proximal end side of the second water channel forming member 62. As shown in FIGS. 5 and 6, the second inflow port 95 a can be opened and closed by a valve body 102 seated on the peripheral edge of the second inflow port 95 a. The valve seat portion 112 on which the valve body 102 is seated is provided with a protrusion protruding in an annular shape from the end surface on the proximal end side of the second water channel forming member 62. An elastic member 116 that is a part of the valve body 102 is attached to the distal end portion of the valve body 102. The valve body 102 closes the second inlet 95a by seating the elastic member 116 of the valve body 102 on the valve seat portion 112. In FIG. 6, the contact range of the valve body 102 is indicated by a two-dot chain line.

  As shown in FIG. 5A, when the valve body 102 is in the closed state, the water flowing into the water passage 82 does not flow into the second water passage 95 but only the first water passage 94. Flow into. The water that flows in from the first inlet 94 a of the first water hole 94 flows out from the first outlet 94 b of the first water hole 94 to the water spray chamber 96. The water that has flowed into the watering chamber 96 is temporarily stored in the watering chamber 96 and discharged from the plurality of shower holes 64c as a plurality of water discharge flows Wf1. As a result, the water that has flowed into the first water flow hole 94 is discharged from the water discharge port 42 of the water discharge head 18 as a plurality of water discharge flows Wf1. That is, shower water is discharged.

  As shown in FIG. 5B, when the valve body 102 is in the open state, the water that has flowed into the water passage 82 flows into both the first water passage hole 94 and the second water passage hole 95. The water that flows in from the second inlet 95 a of the second water hole 95 flows out from the second outlet 95 b of the second water hole 95 to the discharge passage 90. The water that has flowed out into the discharge channel 90 is discharged from the discharge channel 90 and merges with a plurality of discharged water flows discharged from the shower holes 64c to form a single discharged water flow Wf1. As a result, the water that has flowed into both the first water flow hole 94 and the second water flow hole 95 is discharged from the water discharge port 42 of the water discharge head 18 as a single water discharge flow Wf2. That is, straight water discharge is performed.

  7 is a cross-sectional view taken along line BB in FIG. The outer peripheral surface of the second water channel forming member 62 of the present embodiment has a circular shape. Similarly, the inner bottom surface of the first mounting groove 62d formed on the outer peripheral surface of the second water channel forming member 62 has a circular shape. As described above, the plurality of first water passage holes 94 and the second water passage holes 95 are formed in the second water channel forming member 62. The plurality of first water passage holes 94 are formed around the outer shape center Cb <b> 0 of the second water channel forming member 62. The 2nd water flow hole 95 of this embodiment makes circular shape. The total cross-sectional area of the plurality of first water holes 94 is larger than the cross-sectional area of the second water holes 95.

  The center Cb1 of the first water passage hole 94 and the center Cb2 of the second water passage hole 95 are eccentric with respect to the outer shape center Cb0 of the second water passage forming member 62 in a cross section orthogonal to the first axial direction Pc. In the present embodiment, the entire first water flow hole 94 is provided at a position shifted in the eccentric direction Py1 of the first water flow hole 94 with respect to the outer shape center Cb0. The entire second water flow hole 95 is also provided at a position shifted in the eccentric direction Py2 of the second water flow hole 95 with respect to the outer shape center Cb0.

  The second water passage forming member 62 includes a first outer peripheral wall portion 62f that surrounds the internal spaces of the plurality of first water passage holes 94 and the second water passage holes 95, the plurality of first water passage holes 94, and the second water passages. It has the 1st partition wall part 62g which divides the hole 95, and the 2nd partition wall part 62h which divides the adjacent 1st water flow hole 94. As shown in FIG. The first outer peripheral wall portion 62f has a cylindrical shape that is continuous over the entire circumference around the outer shape center Cb0 of the second water channel forming member 62 with the outside of the second water channel forming member 62 being separated.

  In the second water channel forming member 62, cavities having closed cross sections are not formed in the eccentric directions Py 1 and Py 2 of the water flow holes 94 and 95 with respect to the first water flow hole 94 and the second water flow hole 95, respectively. Specifically, the second water passage forming member 62 is provided with only a wall portion without forming a cavity in the eccentric direction Py1 of the first water passage hole 94 with respect to the first water passage hole 94. Further, the second water passage forming member 62 is provided with only a wall portion without forming a cavity in the eccentric direction Py2 of the second water passage hole 95 with respect to the second water passage hole 95. Under this structure, the second inflow port 95a (see FIG. 6) mainly includes the first partition wall portion 62g and the wall portion S1 in the eccentric direction Py2 with respect to the center Cb2 of the second water passage hole 95. And form. In this figure, the wall portion S1 is hatched.

  Accordingly, as described above, the outer diameter of the second water channel forming member 62 is reduced in size even in the case where the wall portion forming the second inlet 95a of the second water channel forming member 62 needs to be thickened. The cross-sectional areas of the water holes 94 and 95 can be secured.

Other features of the second water channel forming member 62 will be described.
The first outer peripheral wall portion 62f extends with the same thickness in the range Sd located in the eccentric direction Py1 of the first water flow hole 94 with respect to the first water flow hole 94. In this range Sd, the first outer peripheral wall portion 62f extends with the smallest thickness or substantially the same thickness. “Equivalent” in the present specification includes both the case where the thickness is the same and the case where the thickness is substantially the same.

  Both end portions of the first partition wall portion 62g are connected to different portions of the first outer peripheral wall portion 62f. The first partition wall portion 62g extends with the same thickness at portions other than the connecting portions 62ga and 62gb with other wall portions. Here, the connection part with the other wall part means the connection part 62ga with the first outer peripheral wall part 62f or the connection part 62gb with the second partition wall part 62h.

  The second partition wall 62h is connected to the first outer peripheral wall 62f and the first partition wall 62g, and serves to reinforce the first outer wall 62f and the first partition wall 62g. The second partition wall portion 62h also extends with the same thickness at portions other than the connection portion with the other wall portion.

  Under the above configuration, the first outer peripheral wall portion 62f and the first partition wall portion 62g forming the first water passage hole 94 extend with the same thickness. Therefore, rather than making the first water passage hole 94 circular, the first water passage hole is secured in a wide range around the center Cb1 of the first water passage hole 94 while ensuring the wall thickness required for ensuring the required strength without waste. It becomes easy to ensure the cross-sectional area of the hole 94. In order to obtain such an effect, the first partition wall portion 62g has at least a portion of the meat other than the connection portions 62ga and 62b with the other wall portions such as both ends of the first partition wall portion 62g. What is necessary is just to extend with thickness. For example, the connecting portions 62ga at both ends of the first partition wall portion 62g may also extend with an equivalent thickness.

  The inner surface portion 62fa of the first outer peripheral wall portion 62f that forms each of the adjacent first water passage holes 94 is provided so as to pass on the curve Ld having the same curvature radius. Specifically, these are provided along the same curve Ld. The inner surface portion 62gc of the first partition wall portion 62g forming each of the adjacent first water passage holes 94 is provided so as to pass on the curve Le having the same curvature radius. Specifically, these are provided along the same curve Le. The curvature radius of the curve Ld is larger than the curvature radius of the curve Le. In the figure, these curves Ld and Le are shown in the range from the point Pk1 to the point Pk2.

  In the cross section orthogonal to the first axial direction Pc, the direction orthogonal to the eccentric direction Py2 of the second water passage hole 95 is defined as Py3. A portion 94 c of the first water passage hole 94 is provided in the direction Py3 with respect to the second water passage hole 95. The inner surface portion 62gc of the first partition wall portion 62g that forms the first water passage hole 94 and the inner surface portion 62fa of the first outer peripheral wall portion 62f that forms the first water passage hole 94 are the same as those of the second water passage hole 95. They are connected via a corner portion 94d that is convex in the eccentric direction Py2. The corner portion 94d of the present embodiment has an arc shape, but may have a cusp shape. Thereby, the cross-sectional area of the 1st water hole 94 can be expanded by utilizing the location of the direction Py3 with respect to the 2nd water hole 95 effectively.

  Returning to FIG. The water discharge head 18 includes a valve mechanism 100 having a valve body 102. The valve mechanism 100 is housed in a housing hole 104 provided in the first water channel forming member 60. The storage hole 104 can guide the valve body 102 in the opening / closing direction Pg along the first axial direction Pa.

  The valve body 102 has a columnar shape extending in the opening / closing direction Pg as a whole. As will be described later, the valve body 102 is actuated so as to move in the valve opening direction Pg <b> 1 that opens the second inflow port 95 a by pushing the operating member 66.

  The valve mechanism 100 includes a position holding mechanism 120 in addition to the valve body 102. The position holding mechanism 120 of this embodiment is a heart cam mechanism that uses a heart cam portion, a cam groove, a follower pin, and the like. Each time the valve body 102 moves in the valve opening direction Pg1, the position holding mechanism 120 has a valve closing state in which the valve body 102 is held in a valve closing position that closes the second inlet 95a, and a valve opening state that opens the second inlet 95a. The valve opening state in which the valve body 102 is held at the position can be switched.

  The storage hole 104 is a bottomed hole that opens in the valve closing direction Pg2 in which the valve body 102 closes the second inflow port 95a and has a bottom in the valve opening direction Pg1 of the valve body 102. A part of the valve body 102 is housed in the housing hole 104 regardless of the position of the valve body 102 in the movable range in the opening / closing direction Pg. The internal space of the storage hole 104 is not directly communicated with the water passage 82 through a portion other than the inlet opening 104c in the valve closing direction Pg2.

  8 is a cross-sectional view taken along the line CC of FIG. As shown in FIGS. 4 and 8, the outer peripheral surface of the first water channel forming member 60 of the present embodiment has a circular shape. The first water passage forming member 60 is formed with a water passage 82 as a first cavity and a storage hole 104 as a second cavity. The downstream portion 82b (see FIG. 4) of the water passage 82 is formed along the first axial direction Pc, and the accommodation hole 104 is formed along the first axial direction Pc. The downstream portion 82 b of the water passage 82 has a cross-sectional area larger than that of the storage hole 104.

  The center Cc1 of the water passage 82 and the center Cc2 of the storage hole 104 are eccentric with respect to the outer center Cc0 of the first water passage forming member 60 in a cross section orthogonal to the first axial direction Pc. In the present embodiment, the entire water passage 82 is provided at a position shifted in the eccentric direction Pz1 of the water passage 82 with respect to the outer shape center Cc0. The storage hole 104 is provided so as to include the outer shape center Cc0.

  The first water channel forming member 60 includes a second outer peripheral wall portion 60 d that surrounds the storage hole 104 and the water passage 82, and a partition wall portion 60 e that separates the storage hole 104 and the water passage 82. The second outer peripheral wall portion 60d separates the inside and outside of the first water channel forming member 60 and has a cylindrical shape that extends over the entire circumference around the outer shape center Cc0 of the first water channel forming member 60.

  The first water channel forming member 60 has a closed cross section in the eccentric directions Pz1 and Pz2 of the water channel 82 and the storage hole 104 with respect to the water channel 82 and the storage hole 104, respectively, in a cross section perpendicular to the first axial direction Pc. No other cavities are formed. Specifically, the first water passage forming member 60 is provided with only a wall portion without forming another cavity in the eccentric direction Pz1 of the water passage 82 with respect to the water passage 82. Further, the first water channel forming member 60 is provided with only a wall portion without forming another cavity in the eccentric direction Pz2 of the storage hole 104 with respect to the storage hole 104.

  Thus, as described with reference to FIG. 10, the outer diameter of the first water channel forming member 60 is reduced compared with the case where the double cylinder structure is configured, and the water channel 82 and the storage hole 104 are disconnected. It becomes easy to design so as to secure an area.

  Both end portions 60h of the partition wall portion 60e are connected to different portions of the second outer peripheral wall portion 60d. In the cross section orthogonal to the first axial direction Pc, the direction orthogonal to the eccentric direction Pz2 of the storage hole 104 is defined as Pz3. A portion 82c of the water passage 82 is provided on both sides in the direction Pz3 with respect to the storage hole 104. Thereby, the cross-sectional area of the water flow path 82 can be expanded by effectively utilizing the location in the direction Pc with respect to the storage hole 104.

  Returning to FIG. The operation unit 54 mainly includes an operation member 66, a support member 140, and a second urging member 142. The components of the operation unit 54 such as the operation member 66 are provided inside the protrusion 48 as a part of the protrusion 48 of the water discharge head 18.

  The operation member 66 is provided so as to be linearly operable along the second axial direction Pd. It can be said that the operation member 66 can operate linearly along a direction intersecting the opening / closing direction Pg of the valve body 102. The operation member 66 of this embodiment is a rod. The operation member 66 can move the valve body 102 by being moved in the operation direction Ph from the initial position (the position in FIG. 4) toward the operation position. The operation member 66 of the present embodiment is moved in the operation direction Ph by a pushing operation.

  The support member 140 has a cylindrical shape that is inserted into the second case portion 50b, and is fixed to the second case portion 50b using a snap-fit structure or the like. The support member 140 is formed with a through hole 140a through which the operation member 66 is inserted. The support member 140 supports the operation member 66 so as to be movable along the second axial direction Pd.

  The second urging member 142 is an elastic body such as a coil spring. The second urging member 142 is accommodated in the through hole 140a of the support member 140, and applies an urging force that pushes the operation member 66 back from the operating position to the initial position.

  In the operation unit 54 described above, when an external force in the operation direction Ph is applied to the operation member 66, the operation member 66 is linear from the initial position toward the operation position against the urging force of the second urging member 142. Moved to. When the external force applied to the operation member 66 is released, the operation member 66 is pushed back from the operating position to the initial position by the urging force of the second urging member 142.

  When the operating member 66 moves from the initial position to the operating position, the operating member 66 moves the valve body 102 in the valve opening direction Pg1. Each time the operating member 66 moves to the operating position and is pushed back to the initial position, the valve body 102 is held at the valve opening position by the position holding mechanism 120 and the valve body 102 is held at the valve closing position. The closed valve state is switched. As a result, the presence or absence of water flow to the second water passage hole 95 of the second water channel forming member 62 is switched, and the water discharge mode of the water discharge head 18 is switched between the shower water discharge and the straight water discharge. The operation member 66 can open and close the valve body 102 by being operated by receiving an external force, and can switch whether or not the second water passage hole 95 is switched by opening and closing the operation member 66.

  FIG. 9 is a view of the water discharge head 18 as viewed from the arrow Xa of FIG. The operation member 66 described above is provided as at least a part of the protruding portion 48 protruding from the outer peripheral portion of the main body portion 46. The protrusion 48 is provided in a partial range Sc around the central axis Lc of the main body 46. The protrusion 48 is not provided in the entire range around the central axis Lc of the main body 46, that is, the protrusion 48 is not cylindrical. The protrusion 48 of this embodiment is provided so as to be within a range of 90 ° around the central axis Lc. Thereby, in switching the presence or absence of water flow through the second water flow hole 95, it is not necessary to provide the rotary handle as described in Patent Document 1 in the main body 46, and the outer diameter of the main body 46 is small. Can be realized.

  In the above, the example of embodiment of this invention was demonstrated in detail. The above-described embodiments are merely specific examples for carrying out the present invention. The contents of the embodiments do not limit the technical scope of the present invention, and many design changes such as changes, additions, deletions, etc. of constituent elements are possible without departing from the spirit of the invention defined in the claims. Is possible. In the above-described embodiment, contents that can be changed in this way are emphasized with the notation of “embodiment”, “in the embodiment”, etc. Changes are allowed. Moreover, the hatching given to the cross section of drawing does not limit the material of the hatched object.

  As for the water discharging apparatus 10 which functions as a water faucet apparatus, the operation reception part which receives the switching operation by a user demonstrated the example whose object detection sensor 24 is. The operation receiving unit may be a handle or the like that receives a manual switching operation. In this case, the water discharge device 10 may switch the operation state between the water discharge state and the water discharge stop state by opening and closing the on-off valve 40 in response to a switching operation on the handle or the like.

  Although the apparatus main body 14 of the water discharging apparatus 10 demonstrated the example which has the water discharging pipe 22, it is not limited to this. The apparatus main body 14 may have a mirror cabinet etc., for example.

  The water discharge head 18 has been described as an example of a water discharge component capable of discharging a water discharge flow from the water discharge port 42. The water discharge component is not limited to the water discharge head, and may be, for example, a shower head. Moreover, although the water discharging component demonstrated the example which has the case member 50 and the water channel formation members 60, 62, and 64, the case member 50 does not need to be.

  The example in which the water discharge mode of the water discharge component is switched between shower water discharge (first water discharge mode) and straight water discharge (second water discharge mode) by switching the open / close state of the valve body 102 has been described. Specific examples of the first water discharge mode and the second water discharge mode are not limited thereto. For example, in the first water discharge mode, the flow rate of shower water discharge is reduced by passing water only through the first water flow hole 94, and in both the first water flow hole 94 and the second water flow hole 95 in the second water discharge mode. You may enlarge the flow volume of shower water discharge by letting it pass.

  If the second water passage forming member 62 is not formed with cavities in the eccentric directions Py1 and Py2 with respect to the first water passage hole 94 and the second water passage hole 95, the first water passage hole 94 and the second water passage hole. The shape of the hole 95 is not particularly limited. The first water channel forming member 60 is not particularly limited with respect to the shape of the water channel 82 and the storage hole 104 as long as no cavity is formed in the eccentric directions Pz1 and Pz2 with respect to the water channel 82 and the storage hole 104. In the first water channel forming member 60, the water channel 82 and the storage hole 104 may be provided concentrically.

  Although the operation member 66 has been described as being provided as a part of the protruding portion 48, the operation member 66 may be provided as a rotary handle that is rotatably supported by the main body portion 46. Moreover, although the operation member 66 demonstrated the example provided as a part of the protrusion part 48, you may comprise the whole protrusion part 48. FIG. In any case, the operation member 66 is provided as at least a part of the protrusion 48.

  Generalizing the invention embodied by the above embodiments and modifications leads to the following technical idea. Hereinafter, description will be made by using aspects described in the problems to be solved by the invention.

In the first aspect, the water discharge component of the second aspect is provided on one side in the axial direction with respect to the water channel forming member, and is formed on the other water channel forming member extending in the axial direction and the other water channel forming member A first cavity serving as the water channel, and a second cavity formed in the other water channel forming member and containing the valve body, each center of the first cavity and the second cavity being The cross section perpendicular to the axial direction of the other water channel forming member is eccentric with respect to the outer center of the other water channel forming member, and the other water channel forming member includes the first cavity and the second cavity. For each of these, another cavity does not need to be formed in the direction in which the cavity is eccentric from the center of the outer shape.
According to this aspect, compared with the case where the 1st cavity and the 2nd cavity comprise a concentric double cylinder structure, a part of wall part required in comprising a double cylinder structure can be omitted. Thereby, compared with the case where another water channel formation member comprises a double cylinder structure, it becomes easy to design so that the cross-sectional area of a water channel and a storage hole may be ensured, reducing another water channel formation member.

In the first or second aspect, the water discharge component of the third aspect has the water channel forming member and incorporates the valve body, and extends from the outer peripheral portion of the main body portion, the main body portion extending in the axial direction, and the main body A projecting portion provided in a partial range around the central axis of the portion, and an operation member provided as at least a part of the projecting portion and capable of switching an open / closed state of the valve body by being operated by receiving an external force , May be provided.
According to this aspect, when the presence / absence of water flow through the second water passage hole is switched, it is not necessary to provide the rotary handle in the main body portion, and the outer diameter of the main body portion can be reduced.

The water discharge component according to a fourth aspect is any one of the first to third aspects, wherein the water channel forming member includes a first outer peripheral wall portion surrounding the first water flow hole and the second water flow hole, and the first A first partition wall that separates the water passage hole and the second water passage hole, and the first outer peripheral wall portion has the outer shape center of the first water passage hole with respect to the first water passage hole. The first partition wall portion has at least a portion other than the connecting portion with the other wall portion in the range located in the eccentric direction from the first wall portion. It may extend.
According to this aspect, rather than making the first water passage hole into a circular shape, the first passage hole is secured in a wide range around the center of the first water passage hole while ensuring the wall thickness necessary for ensuring the required strength. It becomes easy to secure the cross-sectional area of the water hole.

  The fifth aspect is a faucet device. The water faucet device according to the fifth aspect includes the water discharge component according to any one of the first to fourth aspects.

46 ... Main body part, 48 ... Projection part, 60 ... First water channel forming member (other water channel forming member), 62 ... Second water channel forming member, 62f ... First outer peripheral wall part, 62g ... First partition wall part, 66 DESCRIPTION OF SYMBOLS Operation member, 82 ... Water flow path, 94 ... 1st water flow hole, 94a ... Inflow port, 95 ... 2nd water flow hole, 102 ... Valve body.

Claims (5)

A water channel forming member extending in the axial direction;
A first water hole and a second water hole formed in the water channel forming member;
A water flow path that is provided on one side in the axial direction with respect to the water flow path forming member, and allows water to flow into the respective inlets of the first water flow hole and the second water flow hole;
A valve body capable of opening and closing the inlet of the second water passage hole,
The center of each of the first water passage hole and the second water passage hole is eccentric with respect to the outer shape center of the water passage forming member in a cross section orthogonal to the axial direction of the water passage forming member,
A water discharge part in which a hollow is not formed in the water channel forming member in a direction in which the water passage hole is eccentric from the center of the outer shape with respect to each of the first water passage hole and the second water passage hole. Another water channel forming member provided on one side in the axial direction with respect to the water channel forming member and extending in the axial direction;
A first cavity formed in the other water channel forming member and serving as the water channel;
A second cavity that is formed in the other water channel forming member and houses the valve body,
The respective centers of the first cavity and the second cavity are eccentric with respect to the outer center of the other water channel forming member in a cross section perpendicular to the axial direction of the other water channel forming member,
2. The water discharge according to claim 1, wherein no other cavity is formed in the other water channel forming member in a direction in which the cavity is eccentric from the center of the outer shape with respect to each of the first cavity and the second cavity. parts. A main body having the water channel forming member and incorporating the valve body, and extending in the axial direction;
Projecting from the outer peripheral portion of the main body, and provided in a partial range around the central axis of the main body,
The water discharging part according to claim 1, further comprising: an operation member that is provided as at least a part of the projecting portion and can be operated by receiving an external force to switch the open / closed state of the valve body. The water channel forming member includes a first outer peripheral wall portion surrounding the first water passage hole and the second water passage hole, a first partition wall portion separating the first water passage hole and the second water passage hole, Have
The first outer peripheral wall portion extends with an equal thickness in a range where the first water passage hole is located in a direction decentered from the outer shape center with respect to the first water passage hole,
The water discharge component according to any one of claims 1 to 3, wherein the first partition wall portion extends at least at a portion other than a connection portion with another wall portion with an equivalent thickness.   A water faucet device comprising the water discharging component according to any one of claims 1 to 4.

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