JP2016102330A - Water discharge device and wash stand having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water discharge device for incorporating an impeller for lengthening the durability life.SOLUTION: An impeller 174 incorporated into a water discharge device intermittently passes a water flow by rotating with the water conduction direction as the axial direction. A water sprinkling plate member is installed on the downstream side of the impeller 174. The impeller 174 is formed with a plurality of blade parts 178a, 178b, 178c, 178d, 178e, 178f, 178g and 178h, and a plurality of sidewalls 180a, 180b, 180c and 180d are arranged at an interval on a side surface of the impeller 174. More specifically, an outer end part of the blade part 178a and an outer end part of the blade part 178b adjacent to the blade part 178a, are connected by the sidewall 180a, and a plurality of sidewalls are arranged so that a sidewall part and an opening part are alternately juxtaposed in a side surface part of the blade part by opening a part between the outer end part of the blade part 178b and the outer end part of the blade part 178c adjacent to the blade part 178b. A bottom surface part of the blade part is formed with a water conduction port of extending in the radial direction.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a water discharge device attached to a faucet or the like, and more particularly, to a structure of a water discharge device incorporating an impeller.

  Some faucets (water discharge devices) installed in washstands and kitchens have a built-in impeller. The impeller rotates about the direction of water flow by the water flow and intermittently passes water from a water flow port formed in the bottom surface. The impeller contributes to water saving by limiting the amount of water flow, while providing a unique and moderate strength tactile feel by intermittent water flow.

  Patent Document 1 is a faucet of a type incorporating an impeller proposed in the past by the present applicant. In this faucet, the impeller is rotated on the watering plate. By providing protrusions on the sprinkler plate or impeller, friction between the impeller and the sprinkler plate is reduced to improve the rotational performance.

  Patent Document 2 is also an invention proposed by the present applicant in the past, and discloses a bathroom shower incorporating an impeller. In the case of a bathroom shower, since the impeller can be rotated with a sufficient amount of water, the impeller can continue to rotate even if the balance is slightly lost. Moreover, since the shower head is large, a relatively large and robust impeller can be employed.

JP 2014-150822 A JP 2012-135606 A

  In the case of the impeller built into the faucet of the wash basin, a measure to prevent the impeller from being worn is particularly required by rotating it in a balanced manner with a small amount of water. The present inventors reexamined the faucet structure described in Patent Document 1 and further extended the product life of the water discharger by devising the parts built into the faucet, in particular, the structure of the impeller. I thought I could do it.

  This invention is made | formed based on the said subject recognition, The main objective is to provide the technique for extending the service life of the water discharging apparatus incorporating an impeller.

A water discharge device according to an aspect of the present invention includes an impeller that intermittently passes a water flow by rotating with a water flow direction as an axial direction, and a water spray plate member that is positioned on the downstream side of the impeller.
A plurality of blades are formed on the impeller, and a plurality of side walls are arranged at intervals on a side surface of the impeller.

  A plurality of side walls are provided on the side surface of the impeller, and a water escape path is formed between the side walls. Thereby, the pressure concerning the bottom face part of an impeller is reduced, and it becomes easy to extend the useful life of an impeller.

An even number of blades stand from the bottom surface of the impeller, the outer end of the first blade and the outer end of the second blade adjacent to the first blade are connected by a side wall, By opening between the outer end and the outer end of the third blade adjacent to the second blade, a plurality of side walls are arranged so that the side wall portions and the open portions are alternately arranged in the side surface portion of the impeller. May be.
By connecting or opening the outer ends of the even number of blades, it is easy to maintain the balance of the impeller by alternately arranging the side wall portions (shielding portions) and the open portions.

A water passage extending in the radial direction is formed in the bottom surface of the impeller, and the water passage has an opening area of the outer half portion larger than that of the inner half portion.
On the bottom surface of the impeller, the water pressure tends to be larger on the outer side (outer peripheral side) than on the inner side (rotating shaft side). Therefore, by increasing the opening area of the outer half part relative to the opening area of the inner half part, the water pressure in the entire water passage is leveled, and it becomes easy to realize a smooth feeling. The inner half is a region on the rotating shaft side when the water passage is divided into two in its diameter, and the outer half is a region on the outer periphery side when the water passage is divided into two in the diameter. It will be described later.

The side wall formed on the impeller may be formed such that the outer surface at the front end of the impeller is on the inner side of the outer surface at the rear end.
When the impeller is out of balance, the rotation front end (front side in the rotation direction of the impeller) of the side wall is in contact with the external member more easily than the rotation rear end (rear side in the rotation direction of the impeller). Thus, by forming the front end of the side wall in advance on the inner side in advance, such contact can be easily prevented.

On the surface facing the water spray plate member of the impeller, the outer peripheral side may be formed away from the water spray plate member rather than the rotating shaft side of the facing surface.
When the balance of the impeller is lost, the outer peripheral side of the facing surface is more likely to come into contact with the water spray plate member than the rotating shaft side. Therefore, it is easier to prevent such contact by forming the outer peripheral side away from the water spray member by an inclination or a step than the rotating shaft side.

A protrusion that contacts the water spray plate member may be formed at the rotation center of the surface of the impeller facing the water spray plate member, and a groove may be formed at the periphery of the protrusion.
By providing such a protrusion, the contact point between the impeller and the water spray plate member can be localized in the protrusion, and therefore the impeller can be improved in rotation. Furthermore, by forming a groove on the periphery of the protrusion, it becomes easy to sharpen the side surface of the protrusion when resin molding the impeller. When the kurtosis of the protrusion is increased, it is easy to maintain the rotational performance for a long period of time even if the protrusion is worn by rotation.

  The washstand in an aspect of the present invention may include a faucet incorporating a water discharge device and a wash bowl that receives water discharged from the faucet.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes easy to extend the service life of the water discharging apparatus which incorporates an impeller.

It is a front view of a washstand. It is a side view of a washstand. It is an external appearance perspective view of a faucet. It is a sectional side view of the upper end part of a faucet. It is sectional drawing of the water discharging apparatus in this embodiment. It is a disassembled perspective view of the water discharging apparatus in this embodiment. It is the upper side figure and side view of an impeller. It is an external appearance perspective view of a water impeller. It is a schematic diagram of a water flow opening. FIG. 10A is an enlarged cross-sectional view of a rotating protrusion, FIG. 10A corresponds to an ideal rotating protrusion, FIG. 10B corresponds to a general rotating protrusion, and FIG. 10C corresponds to the rotating protrusion in the present embodiment. It is a schematic diagram which illustrates wear and tear of a rotation protrusion.

FIG. 1 is a front view of the washstand 100. FIG. 2 is a side view of the washstand 100.
The wash basin 100 includes a faucet 110 and a wash bowl 104. The wash ball 104 is attached to the wall surface 120 by a support member 116. The upper surface of the wash basin 100 is covered with a wash basin cover 118, and a faucet 110 (a water discharge device) is attached on the wash basin cover 118.

  Water is supplied from a first water supply pipe 122 extending from the wall surface 120 to a water discharge control device 106 incorporating a solenoid valve. The water discharge control device 106 controls water discharge by opening and closing the electromagnetic valve with electric power supplied from the power supply 108. When the solenoid valve is opened, the water in the first water supply pipe 122 reaches the faucet 110 via the second water supply pipe 112. The water discharged from the faucet 110 is received by the wash bowl 104 and drained from the drain pipe 114.

FIG. 3 is an external perspective view of the faucet 110.
The water discharge part 124 of the faucet 110 is exposed on the counter of the washstand 100. The water discharge unit 124 includes a water discharge pipe 140 and an operation panel 142 that extends laterally from the root of the water discharge pipe 140. With the switch 144 of the operation panel 142, water discharge from the water discharge port 148 can be controlled by manual operation regardless of whether or not a human body detection sensor 146 described later is detected.

  A water discharge device 150 (pulse shower device) including a cylindrical water discharge port 148 is built in the upper end portion of the water discharge pipe 140, and a human body for detecting the hand inserted at the upper end of the water discharge portion 124. A detection sensor 146 is incorporated. Water discharge / water stop can be controlled by the human body detection sensor 146. Specifically, when the human body detection sensor 146 detects the insertion of a hand, a detection signal is sent to the water discharge control device 106, the electromagnetic valve is opened, and water is supplied from the second water supply pipe 112.

  A male screw tube 152 extends below the water discharge tube 140. The water discharge pipe 140 and the operation panel 142 are fixed on the wash basin cover 118 by a male screw pipe 152, a nut 154 and a triangular packing 156. The male screw pipe 152 includes a second water supply pipe 112, a sensor signal line 158 that transmits a detection signal of the human body detection sensor 146, and a switch signal line 160 that transmits an operation signal of the operation panel 142. The sensor signal line 158 and the switch signal line 160 are connected to the water discharge control device 106. The water discharge pipe 140 also includes a pull bar 162 for opening and closing the drain pipe 114.

FIG. 4 is a side sectional view of the upper end portion of the faucet 110.
The water discharge pipe 140 incorporates a water discharge device 150 and a human body detection sensor 146 at the upper end. The water discharge device 150 and the human body detection sensor 146 are supported by the holding member 164. The second water supply pipe 112 is connected to the water discharge device 150 via the holding member 164. The water sent from the second water supply pipe 112 enters the water discharge device 150 from the holding member 164 and is discharged from the water discharge port 148.

  The water discharge device 150 has a cylindrical inner connection portion 166. The water discharge device 150 is fixed to the holding member 164 by the screw groove on the outer side surface of the inner connection portion 166 meshing with the screw groove on the inner side surface of the outer connection portion 168 of the holding member 164. A space between the water outlet 148 and the holding member 164 is sealed by a ring-shaped elastic shield member 170.

FIG. 5 is a cross-sectional view of the water discharge device 150 in the present embodiment. FIG. 6 is an exploded perspective view of the water discharge device 150 in the present embodiment. FIG. 7 is a top view and a side view of the impeller 174. FIG. 8 is an external perspective view of the impeller 174.
The water discharge device 150 includes an impeller 174. Eight blade portions 178 are formed on the bottom surface portion 176 of the impeller 174 (see FIGS. 6 to 8), and four side walls connecting the outer ends of the adjacent blade portions 178 to the side surfaces of the impeller 174. 180 is formed. More specifically, referring to FIGS. 7 and 8, the side wall 180a connecting the blade part 178a and the blade part 178b, the side wall 180b connecting the blade part 178c and the blade part 178d, and the blade part 178e and the blade part 178f are connected. A side wall 180d that connects the side wall 180c, the blade part 178g, and the blade part 178h is formed. A space between the outer end portion of the blade portion 178b and the outer end portion of the blade portion 178c is opened, and a space between the outer end portion of the blade portion 178d and the outer end portion of the blade portion 178e is also opened. The space between the outer end portions of the blade portion 178g is also opened, and the space between the outer end portion of the blade portion 178h and the outer end portion of the blade portion 178a is also opened. Thus, the open areas and the shield areas (side walls 180) are alternately arranged on the side surfaces of the impeller 174.

  Two water inlets 182 are formed in the bottom surface portion 176 of the impeller 174. Specifically, in the bottom surface portion 176, a water passage 182a is formed between the blade portion 178a, the blade portion 178b, the side wall 180a, and the rotating shaft 184 (see FIG. 7), and the blade portion 178e, the blade portion 178f, and the side wall 180c. A water passage 182b is formed between the rotary shaft 184 and the rotary shaft 184.

  The impeller 174 receives the water supplied from the water discharge pipe 140 by the blade portion 178 and rotates in the direction indicated by the arrows in FIGS. The water supplied to the impeller 174 passes through the water inlet 182 while being blocked by the bottom surface portion 176. A part of the water is discharged from the open area on the side surface of the impeller 174. The impeller 174 is rotated by the water flow, and the water supplied from the water discharge pipe 140 is intermittently passed through the water inlet 182 of the impeller 174.

  The nozzle sheet 186 is an elastic sheet and has a plurality of nozzles 190. The nozzle sheet 186 in this embodiment is made of rubber. The cap member 188 has a plurality of water passage holes at positions corresponding to the plurality of nozzles 190. The nozzle 190 is fitted into the water passage opening of the cap member 188 (see FIG. 5). In addition, a screw groove is formed on the side surface 192 of the cap member 188 (see FIG. 6), and three slits 194 are also formed.

  A nozzle sheet pressing member 196 for pressing the nozzle sheet 186 is placed on the nozzle sheet 186. The nozzle sheet pressing member 196 is desirably a member having higher rigidity than the nozzle sheet 186. The nozzle sheet pressing member 196 in the present embodiment is made of resin. A plurality of water passage holes are also formed in the nozzle sheet pressing member 196. The nozzle sheet 186 and the nozzle sheet pressing member 196 are collectively referred to as a “sprinkling plate member 198”. The nozzle sheet pressing member 196 and the nozzle sheet 186 may be integrally formed.

  A rotation protrusion 200 is formed on the lower surface of the impeller 174 (see FIGS. 5 and 7), and the impeller 174 rotates around the rotation protrusion 200. By limiting the contact point between the impeller 174 and the nozzle sheet pressing member 196 to the top of the rotation protrusion 200, the friction between the impeller 174 and the nozzle sheet pressing member 196 is reduced, and the rotational performance of the impeller 174 is enhanced. In other words, the impeller 174 rotates on the nozzle sheet pressing member 196 around the rotation protrusion 200 as a rotation center like a top.

  A water jet member 172 is placed on the impeller 174 (see FIG. 6). A plurality of water passage holes 204 are formed on the upper surface of the water jet member 172. The water flow hole 204 of the water jet member 172 is opened in an oblique direction so that water can be applied to the side surface of the blade portion 178 to apply a rotational force to the impeller 174. The water jet member 172 has three legs 202 for fitting into the slits 194 of the cap member 188.

  As shown in FIG. 6, the nozzle sheet pressing member 196 has three cutout regions 212 on the outer peripheral portion. The notch region 212 is formed as a recess formed by cutting a part of the upper surface of the nozzle sheet pressing member 196. The impeller 174 is accommodated by fitting the leg 202 of the water jet member 172 into the cutout region 212 of the nozzle sheet pressing member 196. As a result, an “impeller unit 216” that is a combination of the water jet member 172, the nozzle sheet pressing member 196, and the impeller 174 is formed.

  Of the distal end surfaces of the leg portions 202, the inner peripheral side comes into contact with the cutout region 212 of the nozzle sheet pressing member 196, and the outer peripheral side comes into contact with the cap member 188 (see FIG. 5). A cover member 214 is attached from above the water jet member 172, and a screw groove (not shown) on the inner periphery of the cover member 214 and a screw groove on the side surface 192 of the cap member 188 are engaged with each other. That is, the impeller unit 216 is accommodated by the cap member 188 and the cover member 214.

  As shown in FIGS. 5 to 8, four side walls 180 and four open areas are alternately arranged on the side surface of the impeller 174. This open area serves as an escape path for water that has entered the impeller 174 from the water jet member 172.

  When the side surface of the impeller 174 is entirely surrounded by a side wall as in Patent Document 1, water entering the impeller 174 hardly escapes from the side surface portion, so that water pressure tends to concentrate on the bottom surface portion 176 of the impeller 174. . At this time, in particular, a large load is likely to be applied to the rotating protrusion 200. This load promotes the wear of the rotating protrusion 200. Although the water pressure applied to the bottom surface portion 176 can be reduced to some extent by increasing the number of water inlets 182 or increasing the number of water inlets 182, the water saving performance and intermittent water passing performance deteriorate as the total area of the water inlets 182 increases. Another problem arises.

  Therefore, in this embodiment, a plurality of side walls 180 are formed at intervals in the side surface portion of the impeller 174, and a water escape path is formed on the side surface of the impeller 174, thereby reducing the pressure on the bottom surface portion 176. ing. The water escaped from the side surface of the impeller 174 is received by the inner wall of the cap member 188 and the leg portion 202 of the water passage hole 204. Since there is a slight gap between the impeller unit 216 and the cap member 188 (see FIG. 5), part of the escaped water descends from this gap and is discharged from the water outlet 148 of the cap member 188. In summary, the pressure applied to the bottom surface portion 176 of the impeller 174, particularly the rotary protrusion 200, can be reduced by creating a path in which the water that has entered the impeller 174 descends from the side surface along the inner surface of the cap member 188. Yes. Since it is not the system which enlarges the area of the water flow opening 182, it is easy to maintain water saving performance or intermittent water flow performance.

  As in Patent Document 2 (see FIG. 8), when the half of the side surface of the impeller is covered with a side wall and the remaining half is opened, the balance of the impeller becomes poor. In the case of a bathroom shower, a solid impeller can be powerfully rotated with a large amount of water, but in the case of the faucet 110 of a wash basin, it is necessary to rotate the impeller 174 in a balanced manner with a small amount of water. Therefore, in the present embodiment, the blade portions 178 are arranged so that each side wall 180 is symmetrical with respect to the rotation center so that the center of gravity of the impeller 174 is positioned at the rotation center (the rotation protrusion 200). As an even number of eight sheets, four side walls 180 and four open portions are alternately arranged at substantially equal intervals. According to the acceleration test conducted by the present inventors (a test in which water pressure and water temperature are increased and a load is applied), as compared with an impeller of the type in which the side surface of the impeller 174 is entirely covered with a side wall as in Patent Document 1. It has been confirmed that the impeller 174 of the present embodiment has a service life of approximately three times.

  Furthermore, the side wall 180 of the present embodiment is slightly shifted in position on the outer surface at the front end of rotation (front side in the rotational direction of the impeller 174) and the rear end of rotation (rear side in the rotational direction of the impeller 174). Yes. If the side wall 180c is described as an object (see FIGS. 7 and 8), the front end side wall 220 located at the front end of rotation is slightly inward of the rear end side wall 218 located at the rear end of rotation. When the impeller 174 loses its balance and precesses, the front end side wall 220 of the side walls 180c becomes an external member (the leg 202 or the cap member 188 of the water jet member 172) rather than the rear end side wall 218. It turned out to be easy to collide. When the side wall 180 comes into contact with the external member, the rotational property becomes worse. Thus, the front end side wall 220 that is particularly likely to collide is formed slightly inside, thereby preventing the impeller 174 and the external member from coming into contact with each other. That is, the rotational performance of the impeller 174 is maintained for a long time by forming the front end side wall 220 having a high possibility of contact with an external member inside while maximizing the diameter of the impeller 174.

  Further, in the present embodiment, the opposed surface 222 (lower surface) of the impeller 174, that is, the surface on which the rotation protrusion 200 is formed and faces the nozzle sheet pressing member 196 is inclined so as to have a mortar shape. ing. This is because, when the balance of the impeller 174 is lost, it has been found that the portion closer to the outer periphery on the facing surface 222 is more likely to come into contact with the external member (the upper surface of the nozzle sheet pressing member 196). That is, the possibility of contact between the impeller 174 and the nozzle sheet pressing member 196 is suppressed by increasing the distance between the outer peripheral portion of the facing surface 222 that is particularly easy to contact and the upper surface of the nozzle sheet pressing member 196.

FIG. 9 is a schematic diagram of the water inlet 182.
As shown in FIG. 7, the water passage 182 has a fan shape that spreads from the inside to the outside. A larger water pressure is applied to the bottom surface 176 of the rotating impeller 174 on the outer peripheral side (outer side) than on the side closer to the rotation shaft 184 (inner side). Therefore, in the present embodiment, the water pressure as the whole water passage 182 is leveled by making the inside of the water passage 182 relatively narrow and making the outside relatively wide. The water inlet 182 in the present embodiment has a fan shape in accordance with the shape of the blade portion 178 and the side wall 180, but the shape of the water inlet 182 is arbitrary. However, when at least the radial length of the water inlet 182 is r, the inner r / 2 region is the inner half 224, and the outer r / 2 region is the outer half 226, the opening of the inner half 224 It is desirable to make the opening area of the outer half 226 larger than the area. Instead of applying a large water pressure to the outer half 226, the opening area is increased to equalize the difference between the inner and outer water pressures, thereby realizing a feeling of unevenness.

FIG. 10A to FIG. 10B are enlarged cross-sectional views of the rotating protrusion 200.
FIG. 10A shows an ideally shaped rotating protrusion 200. The rotating projection 200 of the impeller 174 is gradually worn out with age. Therefore, it is desirable that the rotation protrusion 200 has a shape that can easily maintain the rotation performance for a long time even when wear occurs. In the case of the rotating protrusion 200 shown in FIG. 10A, since the side surface of the rotating protrusion 200 stands upright with respect to the opposing surface 222, the diameter x1 of the rotating protrusion 200 does not change even if the rotating protrusion 200 is worn out. .

  However, if the rotating protrusion 200 shown in FIG. 10A is made by resin molding, the rotating protrusion 200 having a gentle shape as shown in FIG. Since the diameter x2 of the rotating protrusion 200 in FIG. 10B gradually increases due to wear, the rotating performance is likely to change over time.

  Therefore, in the present embodiment, as shown in FIG. 10C, a groove 228 is formed on the peripheral edge of the rotating projection 200. By using a mold for molding not only the rotating protrusion 200 but also the groove 228, the side surface of the rotating protrusion 200 can be made steeper compared to FIG. 10B, so that the ideal shape shown in FIG. Get closer. In other words, the provision of the groove 228 makes it easy to increase the kurtosis of the rotating protrusion 200 after molding. The diameter x3 of the rotating protrusion 200 in FIG. 10C is not as stable as the diameter x1, but does not increase larger than the diameter x2. By providing the groove 228 in this manner, the side surface of the rotation protrusion 200 is made steep so that the rotation performance can be easily maintained over a long period. According to experiments, when the depth of the groove 228 is about 50 to 70% of the height of the rotating protrusion 200, the side surface of the rotating protrusion 200 can be sharpened most.

FIG. 11 is a schematic view illustrating wear of the rotating protrusion 200.
When the use of the impeller 174 is continued, the nozzle sheet pressing member 196 is gradually scraped and recessed by the rotating protrusion 200. Further, the rotating protrusion 200 is also partially worn away. For example, as shown in FIG. 11, when the side surface of the rotation protrusion 200 is worn and the recess of the nozzle sheet pressing member 196 becomes deep, the impeller 174 does not rotate stably. The rotating protrusion 200 is not always worn from the top. As shown in FIG. 10C, the rotation can be stabilized for a long time by making the side surface of the rotation projection 200 steep, but if the wear of the rotation projection 200 increases, the impeller 174 stabilizes the rotation shaft. Without precession.

  As the impeller 174 precesses, the side wall 180 begins to contact the inner surface of the cap member 188. When the side wall 180 and the external member come into contact with each other, the rotational performance is further deteriorated. Therefore, as described above, the front end side wall 220 of the side wall 180 is slightly moved inward to make it difficult to make contact.

  Similarly, when the impeller 174 precesses, the facing surface 222 starts to contact the upper surface of the nozzle sheet pressing member 196. When the facing surface 222 comes into contact with the upper surface of the nozzle sheet pressing member 196, the rotational performance is deteriorated. Therefore, as described above, by forming an inclined surface on the facing surface 222, the possibility of contact is similarly reduced.

In the above, based on embodiment, it demonstrated centering on the structure of the water discharging apparatus 150, especially the structure of the impeller 174. FIG.
Since the impeller 174 of this embodiment can suppress the water pressure to the bottom face part 176 by allowing water to escape from the side face part, the load applied to the impeller 174 can be reduced. Thereby, the rotational performance of the impeller 174 can be favorably maintained over a long period of time. Further, by devising the shape of the side wall 180 of the impeller 174 and the shape of the facing surface 222, even if the impeller 174 precesses, the surrounding members (particularly, the water jet member 172 and the nozzle sheet pressing member 196) ).

  The present invention has been described based on some embodiments. Those skilled in the art will understand that these embodiments are examples, and that various modifications and changes are possible within the scope of the claims of the present invention, and that such modifications and changes are also within the scope of the claims of the present invention. It is where it is done. Accordingly, the description and drawings herein are to be regarded as illustrative rather than restrictive.

  In the present embodiment, by providing an inclined surface on the facing surface 222, the outer side of the facing surface 222 is separated from the upper surface of the nozzle sheet pressing member 196. This is because the outer end portion of the facing surface 222 is most likely to come into contact with the upper surface of the nozzle sheet pressing member 196 when the impeller 174 undergoes precession. Therefore, the inclined surface is not necessarily required. For example, a step is provided on the facing surface 222 such that the outer surface (outer peripheral side) of the inner surface (rotation center side) is separated from the upper surface of the nozzle sheet pressing member 196. Also good. Further, such an inclined surface or a step surface may be formed not on the facing surface 222 of the impeller 174 but on the upper surface of the nozzle sheet pressing member 196.

  In the present embodiment, the faucet 110 installed in the wash basin 100 has been described as an object. However, the structure of the water discharge device 150 in the present embodiment can also be applied to a kitchen faucet or a bathroom shower faucet. . In the case of a bathroom shower, the balance of the impeller 174 is not as important as the faucet 110 of the wash basin 100, but it is still desirable that the impeller 174 rotate in a balanced manner.

  DESCRIPTION OF SYMBOLS 100 Wash-basin, 104 Washing-ball, 110 Water faucet, 148 Water outlet, 150 Water discharge apparatus, 172 Water flow injection member, 174 Impeller, 176 Bottom face part, 178 Blade part, 180 Side wall, 182 Water outlet, 184 Rotating shaft, 186 Nozzle Sheet, 188 cap member, 190 nozzle, 192 side surface, 194 slit, 196 nozzle sheet pressing member, 198 water spray plate member, 200 rotating projection, 202 leg, 204 water passage hole, 212 notch region, 214 cover member, 216 impeller Unit, 218 rear end side wall, 222 facing surface, 224 inner half, 226 outer half, 228 groove.

Claims (7)

An impeller for intermittently passing the water flow by rotating the water flow direction as an axial direction;
A water spray plate member located on the downstream side of the impeller,
The impeller is formed with a plurality of blades, and a plurality of side walls are arranged at intervals on a side surface of the impeller. An even number of blades stand from the bottom of the impeller,
The outer end of the first blade and the outer end of the second blade adjacent to the first blade are connected by a side wall, and the outer end of the second blade and the second blade adjacent to the second blade are connected. 3. The plurality of side walls are arranged such that side walls and open parts are alternately arranged in a side surface of the impeller by opening between the outer end portions of the three blades. The water discharge apparatus of description. On the bottom surface of the impeller, a water passage extending in the radial direction is formed,
The water discharge device according to claim 1 or 2, wherein the water outlet has an opening area of an outer half portion larger than an opening area of an inner half portion.   The side wall formed in the said impeller is formed in the outer side surface in the rotation front side end of the said impeller inside the outer surface in the rotation rear side end, The Claim 1 characterized by the above-mentioned. Water discharge device.   5. The surface of the impeller facing the watering plate member is formed such that the outer peripheral side of the facing surface is separated from the watering plate member rather than the rotating shaft side. The water discharging apparatus in any one of.   The center of rotation of a surface of the impeller facing the watering plate member is formed with a protrusion that contacts the watering plate member, and a groove is formed on the periphery of the protrusion. The water discharging apparatus according to any one of 1 to 5. A faucet incorporating the water discharge device according to any one of claims 1 to 5,
A wash bowl that receives water discharged from the faucet;
A wash basin characterized by comprising:

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