Water supply structure for hand washing basin

Abstract

To provide a water supply structure for a hand washing basin capable of carrying out a flow system in which a small amount of water is always discharged from a push faucet provided in the hand washing basin when a water supply pipe is branched downstream of a stop valve so as to connect to a toilet bowl and a hand washing basin, respectively. [Solution] The system comprises a hand wash basin main body 3 installed in a toilet room 11, a push faucet 4 attached to the hand wash basin main body 3, a hand wash basin water supply pipe 5 branching off from a water supply pipe connected to a toilet 2 in the toilet room 11 and connected to the push faucet 4, and a hand wash basin stop valve 6 installed in the hand wash basin water supply pipe 5.

Description

[Technical Field]

[0001] The present disclosure relates to a water supply structure for a hand washing basin. [Background technology]

[0002] Conventionally, as disclosed in Patent Document 1, there are cases where a toilet room is equipped with a hand wash basin along with a toilet bowl. In such cases, the water supply pipe drawn into the toilet room branches off downstream of the stop valve and is connected to a flush tank, a private cleaning device, and the hand wash basin, all of which are installed in the toilet bowl. The hand wash basin faucet sometimes uses a push faucet, which allows the user to switch between water discharge and water stop by pressing a push button. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-110428 Summary of the Invention [Problem to be solved by the invention]

[0004] In cold regions, a flow-through system that constantly releases a small amount of water is sometimes used to prevent water supply pipes from freezing at night. With a flow-through system, the faucet is adjusted to keep the flow rate low. However, with a push-button faucet, the flow rate cannot be adjusted by the faucet when the flow-through system is used, so the flow rate must be adjusted by adjusting the stop valve. If the water supply pipe branches downstream from the stop valve to connect to the flush tank, personal cleaning device, and hand basin installed in the toilet, adjusting the stop valve to match the flow rate of the hand basin may affect the amount of water supplied to the toilet.

[0005] The present disclosure aims to provide a water supply structure for a hand wash basin that can use a flow method in which a small amount of water is always discharged from a push faucet installed on the hand wash basin when the water supply pipe branches off to connect to a toilet and a hand wash basin respectively downstream of a stop valve. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objective, the water supply structure of a hand wash basin according to the present disclosure comprises a hand wash basin body installed in a toilet room, a push faucet attached to the hand wash basin body, a hand wash basin water supply pipe branching from a water supply pipe connected to a toilet in the toilet room and connected to the push faucet, and a hand wash basin stop valve installed in the hand wash basin water supply pipe. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] This is an oblique view showing the water supply and drainage of the hand washing basin. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 10 is a diagram showing a modified example of the hand washing basin. DETAILED DESCRIPTION OF THE INVENTION

[0008] As shown in Figures 1 and 2, the hand wash basin 1 is installed in a toilet room 11 together with a toilet bowl 2. The toilet room 11 is installed in a building in a cold region. The toilet bowl 2 is installed in front of a first wall portion 111 of the toilet room 11. The hand wash basin 1 is installed in front of a second wall portion 112 of the toilet room 11. The first wall portion 111 and the second wall portion 112 are arranged perpendicular to each other. The first wall portion 111 and the second wall portion 112 form a corner portion 113. A rear cabinet 12 is provided between the toilet bowl 2 and the first wall portion 111. The rear cabinet 12 is provided along the first wall portion 111. A piping hole portion 121 is formed in the rear cabinet 12. The depth direction of the toilet bowl 2 is referred to as the front-rear direction. In the drawings, the front-rear direction is the direction of arrow A. The hand wash basin 1 is arranged forward of the front end portion 21 of the toilet bowl 2. A counter 13 is provided between the hand wash basin 1 and the first wall 111. The counter 13 is provided along the second wall 112. The counter 13 is connected to the front of the rear cabinet 12. The counter 13 is positioned at approximately the same height as the hand wash basin main body 3 of the hand wash basin 1. The rear cabinet 12, counter 13 and hand wash basin 1 are arranged in an L-shape behind and to the side of the toilet 2.

[0009] As shown in FIG. 3, the toilet 2 has a flush tank 22 and a pubic cleansing device 23. The flush tank 22 is housed in the rear cabinet 12. A water supply pipe 9 drawn into the toilet room 11 branches into three water supply ports: a first water supply port 91, a second water supply port 92, and a third water supply port 93. A stop valve 94 is provided on the water supply pipe 9 upstream of the first water supply port 91, the second water supply port 92, and the third water supply port 93. The water supply pipe 9, the stop valve 94, and the first water supply port 91, the second water supply port 92, and the third water supply port 93 are all located inside the rear cabinet 12. The first water supply port 91 is connected to a water supply pipe 221 of the flush tank 22. Water is supplied to the flush tank 22 from the water supply pipe 9 drawn into the toilet room 11 via the first water supply port 91 and the water supply pipe 221. The second water inlet 92 is connected to a water supply pipe 231 of the local cleaning device 23. Water is supplied to the local cleaning device 23 from a water supply pipe 9 drawn into the toilet room 11 via the second water inlet 92 and the water supply pipe 231. The third water inlet 93 is connected to a hand wash basin water supply pipe 5 of the hand wash basin 1. Water is supplied to the hand wash basin 1 from a water supply pipe 9 drawn into the toilet room 11 via the third water inlet 93 and the hand wash basin water supply pipe 5.

[0010] The drain pipe 24 of the toilet 2 is connected to the drain pipe 96 drawn into the toilet room 11. The hand wash basin drain pipe 7 of the hand wash basin 1 is connected to the drain pipe 24 of the toilet 2. Water from the hand wash basin 1 flows into the drain pipe 96 drawn into the toilet room 11 via the drain pipe 24 of the toilet 2.

[0011] In describing the hand wash basin 1, the horizontal direction along the second wall portion 112 is referred to as the width direction. The horizontal direction intersecting the width direction is referred to as the depth direction. In the width direction, the side on which the first wall portion 111 is located relative to the hand wash basin 1 is referred to as one side of the width direction, and the opposite side is referred to as the other side. In the drawings, the width direction is the direction of arrow A. In the depth direction, the side on which the hand wash basin 1 is located relative to the second wall portion 112 is referred to as the front side. In the drawings, the depth direction is the direction of arrow B.

[0012] As shown in Figures 2 to 4, the hand wash basin 1 has a hand wash basin main body 3, a push faucet 4, a hand wash basin water supply pipe 5, a hand wash basin stop valve 6, a hand wash basin drain pipe 7, and a hand wash basin cabinet 8. The push faucet 4 is attached to the hand wash basin main body 3. The hand wash basin water supply pipe 5 is connected to the push faucet 4. The hand wash basin stop valve 6 is provided on the hand wash basin water supply pipe 5. The hand wash basin drain pipe 7 is connected to the hand wash basin main body 3. The hand wash basin cabinet 8 is provided on the underside of the hand wash basin main body 3.

[0013] The hand wash basin main body 3 is made of, for example, ceramic. The hand wash basin main body 3 has a bowl 31 and a faucet mounting portion 32. A drain hole 33 is formed in the bowl 31. A hand wash basin drain pipe 7 is connected below the drain hole 33. The faucet mounting portion 32 is adjacent to the bowl 31. A push faucet 4 is attached to the upper surface of the faucet mounting portion 32. The hand wash basin water supply pipe 5 and the hand wash basin stop valve 6 are provided below the faucet mounting portion 32. The hand wash basin stop valve 6 is fixed to the second wall portion 112. The bowl 31 is arranged on one side of the faucet mounting portion 32 in the width direction. In other words, the push faucet 4 is arranged on the other side of the bowl 31 in the width direction.

[0014] The hand wash basin cabinet 8 has a pair of side panels 81, 82, a bottom panel 83, and a door 84. See FIG. 1 for the door 84. The door 84 is not shown in FIGS. 2 to 4. The pair of side panels 81, 82 are each fixed to the second wall portion 112. One side panel 81 of the pair of side panels 81, 82 is provided on one side in the width direction of the hand wash basin cabinet 8. The other side panel 82 is provided on the other side in the width direction of the hand wash basin cabinet 8. The upper ends of the pair of side panels 81, 82 are connected to the hand wash basin main body 3. The lower ends of the pair of side panels 81, 82 are located above the floor surface 15. See FIG. 2 for the floor surface 15. A piping hole 87 is formed in the vertical middle of one of the side panels 81. The piping hole 87 is formed at a height below the counter 13.

[0015] The lower plate 83 is provided at the lower end of the hand wash basin cabinet 8. Both widthwise ends of the hand wash basin cabinet 8 are connected to the lower ends of the pair of side plates 81, 82. The hand wash basin cabinet 8 has a hand wash basin cabinet space 86 that is open to the front in the depth direction and is surrounded by the second wall portion 112, the hand wash basin main body 3, the pair of side plates 81, 82, and the lower plate 83. The door 84 is provided on the front surface in the depth direction of the hand wash basin cabinet 8. The door 84 opens and closes the hand wash basin cabinet space 86. The door 84 is, for example, a hinged door.

[0016] The hand wash basin water supply pipe 5 has a first hand wash basin water supply pipe 51 and a second hand wash basin water supply pipe 52. The first hand wash basin water supply pipe 51 is located between the push faucet 4 and the hand wash basin stop valve 6. The second hand wash basin water supply pipe 52 is located between the hand wash basin stop valve 6 and the third water supply port 93 of the water supply pipe 9 drawn into the toilet room 11. The first hand wash basin water supply pipe 51 and the second hand wash basin water supply pipe 52 are both flexible pipes. The first hand wash basin water supply pipe 51 and the second hand wash basin water supply pipe 52 may each be in the form of multiple water supply pipes connected by fittings. The downstream sides of the first hand wash basin water supply pipe 51, the hand wash basin stop valve 6, and the second hand wash basin water supply pipe 52 are located in the hand wash basin cabinet space 86. The second washbasin water supply pipe 52 passes through the piping hole 87 of the washbasin cabinet 8. The second washbasin water supply pipe 52 extends from the washbasin cabinet 8 to the rear cabinet 12, passes through the piping hole 121 of the rear cabinet 12, and is connected to the third water supply port 93 inside the rear cabinet 12.

[0017] The push faucet 4 switches between discharging and stopping water from the water outlet 42 by pressing the push button 41. When the push button 41 is pressed and water is being discharged from the water outlet 42, the push faucet 4 does not automatically stop the water, but will not stop the water until the push button 41 is pressed again. The push faucet 4 is configured so that the amount of water discharged from the water outlet 42 cannot be adjusted by operating the push button 41.

[0018] As shown in FIG. 4 , the hand wash basin stop valve 6 is provided with a water flow adjustment valve 61. An adjustment groove 62 is formed on the surface of the water flow adjustment valve 61 on the front side in the depth direction. A user can adjust the amount of water discharged from the spout 42 of the push-button faucet 4 by inserting the insertion portion 631 of an adjustment tool 63 (shown in FIG. 5 ) into the adjustment groove 62 and turning the water flow adjustment valve 61. A user can adjust the water flow adjustment valve 61 from the front side in the depth direction of the hand wash basin cabinet 8 by opening the door 84 of the hand wash basin cabinet 8. In this way, because the water flow adjustment valve 61 is adjusted using the adjustment tool 63, the hand wash basin stop valve 6 can be made more compact than a hand wash basin stop valve that has a handle or grip for adjusting the water flow attached to the water flow adjustment valve. This makes it easier to install the water supply piping within the hand wash basin cabinet 8.

[0019] As shown in Figures 2 to 4, the hand wash basin drain pipe 7 has a first hand wash basin drain pipe 71, a second hand wash basin drain pipe 72, and a drain trap 73. The first hand wash basin drain pipe 71 is connected downstream of the drain hole 33 of the bowl 31 of the hand wash basin body 3. The drain trap 73 is connected downstream of the first hand wash basin drain pipe 71. The second hand wash basin drain pipe 72 is connected downstream of the drain trap 73. The second hand wash basin drain pipe 72 is connected to the drain pipe 24 of the toilet 2. The connections of the first hand wash basin drain pipe 71, the drain trap 73, and the second hand wash basin drain pipe 72 with the drain trap 73 are located in the hand wash basin cabinet space 86. The second hand wash basin drain pipe 72 passes through a piping hole 87 of the hand wash basin cabinet 8 and is drawn out toward the rear cabinet 12, where it is connected to the drain pipe 24 of the toilet 2.

[0020] When the door 84 of the hand wash basin cabinet 8 is opened, the first hand wash basin water supply pipe 51, hand wash basin stop valve 6, second hand wash basin water supply pipe 52, first hand wash basin drain pipe 71 and second hand wash basin drain pipe 72 arranged in the hand wash basin cabinet space 86 are exposed. The second hand wash basin water supply pipe 52 and second hand wash basin drain pipe 72, which pass through the piping hole 87 of the hand wash basin cabinet 8 and are drawn out to the rear cabinet 12 side, are covered by a piping cover 14 fixed to the second wall portion 112.

[0021] The hand wash basin stop valve 6 has an inlet 64 and an outlet 65. The inlet 64 is connected to the second hand wash basin water supply pipe 52. The inlet 64 is located below the hand wash basin stop valve 6. The outlet 65 is connected to the first hand wash basin drain pipe 71. The outlet 65 is located above the hand wash basin stop valve 6. The hand wash basin stop valve 6 is located below the piping hole 87 formed in the side panel 81 on one side of the width of the hand wash basin cabinet 8. The hand wash basin stop valve 6 is located on the other side of the width of the hand wash basin cabinet space 86. By arranging the hand wash basin stop valve 6 as described above, the hand wash basin stop valve 6 is less likely to interfere with the hand wash basin drain pipe 7. As a result, the user is less likely to interfere with the hand wash basin drain pipe 7 when adjusting the water volume adjustment valve 61 of the hand wash basin stop valve 6. The second washbasin water supply pipe 52 can be easily routed from the washbasin stop valve 6 to the piping hole 87.

[0022] In cold regions, a flow-type system that constantly discharges a small amount of water is sometimes adopted as a measure to prevent freezing of water supply pipes. In the water supply structure of the hand wash basin 1 of this embodiment, a flow-type system can be adopted in which a small amount of water is constantly discharged from the water outlet 42 of the push faucet 4 by pressing the push button 41 of the push faucet 4 to start the water discharge state and adjusting the water flow adjustment valve 61 of the hand wash basin stop valve 6 to reduce the amount of water discharged from the water outlet 42 of the push faucet 4. A small amount is, for example, approximately 0.1 to 0.7 L / min. The water discharge is stringy. When adopting the flow-type system as a measure to prevent freezing of the hand wash basin 1, it is sufficient to adjust the hand wash basin stop valve 6; there is no need to adjust the stop valve 94 of the water supply pipe 9 drawn into the toilet room 11. Therefore, adopting the flow-type system as a measure to prevent freezing of the hand wash basin 1 does not affect the amount of water supplied to the flush tank 22 or the private parts washing device 23 of the toilet stool 2. As a result, the anti-freezing measures of the toilet stool 2 are not affected.

[0023] The hand wash basin stop valve 6 is located forward of the front end 21 of the toilet 2. When adjusting the water volume adjustment valve 61 of the hand wash basin stop valve 6, the work can be easily performed without interference between the toilet 2 and the worker.

[0024] The hand wash basin stop valve 6 is housed in the hand wash basin cabinet space 86. Under normal circumstances, the hand wash basin stop valve 6 is not exposed, resulting in a good design.

[0025] The present disclosure is not limited to the above-described embodiments and may be modified as appropriate. For example, in the above-described embodiments, the hand wash basin 1 may be installed to the side or rear of the toilet 2. The hand wash basin 1 may not be provided with a hand wash basin cabinet 8. The hand wash basin stop valve 6 may not be housed in the hand wash basin cabinet 8. If a piping hole 87 is provided in the side panel 81 of the hand wash basin cabinet 8, its height may be set as appropriate. The toilet room 11 may not be provided with a rear cabinet 12, counter 13, or piping cover 14. The toilet 2 may not be provided with a flush tank 22 or a genital cleansing device 23. The toilet 2 may be provided with a device connected to a water supply pipe other than the flush tank 22 or the genital cleansing device 23.

[0026] The arrangement of the hand basin stop valve 6 and the hand basin drain pipe 7, and the positional relationship between the hand basin stop valve 6 and the piping hole 87 provided in the side panel 81 of the hand basin cabinet 8 may be other than those described above. The arrangement of the bowl 31 of the hand basin main body 3 and the faucet mounting part 32, i.e., the push faucet 4, may also be other than those described above. The position of the piping hole 87 in the hand basin cabinet 8 may also be other than those described above. For example, as in the hand basin 1B shown in Figure 6, the piping hole 87 may be provided in the side panel 81B on the side of the hand basin cabinet 8 closer to the hand basin stop valve 6. In such cases, the direction and posture of the second hand basin water supply pipe 52 and the hand basin drain pipe 7 may be set as appropriate. In Figure 6, the second hand basin drain pipe 72 of the hand basin drain pipe 7 is indicated by a dashed line.

[0027] The positions at which the first hand wash basin water supply pipe 51 and the second hand wash basin water supply pipe 52 are connected to the hand wash basin stop valve 6 may be set as appropriate. A handle or grip for adjusting the water volume may be fixed to the water volume adjustment valve 61 of the hand wash basin stop valve 6. [Explanation of symbols]

[0028] 1, 1B hand wash basin, 2 toilet, 3 hand wash basin body, 4 push faucet, 5 hand wash basin water supply pipe, 6 hand wash basin stop valve, 8 hand wash basin cabinet, 11 toilet room, 21 front end, 22 flush tank, 23 private cleaning device, 42 water outlet, 51 first hand wash basin water supply pipe, 52 second hand wash basin water supply pipe, 61 water volume adjustment valve, 62 adjustment groove, 63 adjustment tool, 84 door, 86 hand wash basin cabinet space, 9 water supply pipe, 9 first water supply inlet, 92 second water supply inlet, 93 third water supply inlet, 94 stop valve,

Claims

1. A hand washing basin body provided in the toilet room; A push faucet attached to the hand washing basin body; a hand wash basin water supply pipe branched from a water supply pipe connected to a toilet in the toilet room and connected to the push faucet; A water supply structure for a hand wash basin having a hand wash basin stop valve installed in the hand wash basin water supply pipe.

2. The water supply structure for a hand wash basin as described in claim 1, wherein the hand wash basin stop valve is provided forward of the toilet bowl.

3. A cabinet provided below the hand washing basin body and equipped with a door, The water supply structure for a hand wash basin according to claim 1 or 2, wherein the hand wash basin stop valve is housed inside the cabinet.

4. The hand wash basin stop valve is an inlet through which water flows; an outlet disposed above the inlet and through which water flows out, the cabinet has a side panel provided on one side in a width direction, The side plate is formed with a hole through which a water supply pipe connected to the inlet of the hand wash basin stop valve passes, The water supply structure for a hand wash basin as described in claim 3, wherein the hand wash basin stop valve is provided on the other side of the width direction inside the cabinet and below the hole portion.

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