Faucets and bathrooms

Abstract

To provide a faucet device capable of releasing excess water pressure to the outside without affecting the appearance of the faucet device.SOLUTION: A faucet device includes: a main body 10 having a water passage 19 inside; a mixing part 40 placed inside the main body 10 for mixing hot water flowing in the water passage 19; an opening / closing part 50 placed inside the main body 10 for opening / closing the water passage 19 at the downstream of the mixing part 40; and a pressure relief part 60 placed inside the main body 10 for releasing the water pressure when the water pressure of the water passage 19 exceeds a predetermined value. The pressure relief part 60 is configured to release the water pressure to an inner space S of the main body 10, and the inner space S communicates with the outside of the main body 10.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a faucet device.

Background Art

[0002] Conventionally, for example, a faucet device described in Patent Document 1 below is known. A pressure relief valve is provided in the main body of this faucet device. The pressure relief valve protrudes outward from the main body. When the pressure of the water in the main body suddenly rises, the pressure relief valve opens the flow path of the main body to the outside of the main body. Thereby, damage to the main body due to water pressure can be prevented.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the pressure relief valve of the faucet device as described above protrudes outward from the main body, it is likely to affect the appearance of the faucet device. There is a desire to release excessive water pressure to the outside without affecting the appearance of the faucet device.

[0005] The present disclosure has been completed based on the above circumstances, and an object thereof is to provide a faucet device capable of releasing excessive water pressure to the outside without affecting the appearance of the faucet device.

Means for Solving the Problems

[0006] The faucet device disclosed herein comprises a main body having a water passage inside; a mixing unit disposed inside the main body for mixing hot and cold water flowing into the water passage; an opening / closing unit disposed inside the main body for opening and closing the water passage downstream of the mixing unit; and a pressure relief unit disposed inside the main body for releasing the water pressure when the water pressure in the water passage exceeds a predetermined value, wherein the pressure relief unit releases the water pressure into the internal space of the main body, and the internal space is in communication with the outside of the main body.

[0007] The faucet device disclosed herein comprises a main body having a water passage inside; a mixing unit disposed inside the main body for mixing hot and cold water flowing into the water passage; an opening / closing unit disposed inside the main body for opening and closing the water passage downstream of the mixing unit; and a pressure relief unit disposed inside the main body for releasing the water pressure when the water pressure in the water passage exceeds a predetermined value. The main body has an axially elongated space, and the mixing unit, the opening / closing unit, and the pressure relief unit are arranged on the axis of the elongated space in the main body. [Brief explanation of the drawing]

[0008] [Figure 1] Perspective view showing the faucet device in Embodiment 1 [Figure 2] Exploded perspective view showing a faucet device. [Figure 3] Cross-sectional view showing a faucet device. [Figure 4] A perspective view showing a magnified portion of the pressure relief section. [Figure 5] A cross-sectional view showing a magnified view of the pressure relief section in the closed state. [Figure 6] A cross-sectional view showing an enlarged view of the pressure relief section in its open state. [Figure 7] A cross-sectional view showing an enlarged view of the pressure relief section of the faucet device in Embodiment 2. [Figure 8] Perspective view showing an elastic body [Figure 9] A cross-sectional view showing an enlarged view of the pressure relief section in its open state. [Figure 10]A cross-sectional view showing an enlarged view of the pressure relief section of the faucet device in Embodiment 3. [Figure 11] A cross-sectional view showing an enlarged view of the pressure relief section in its open state. [Modes for carrying out the invention]

[0009] <Embodiment 1> As shown in Figure 1, the faucet device M comprises a main body 10, a water outlet pipe 12, a shower elbow 13, a first crank leg 14, a second crank leg 15, a first operating section 16, and a second operating section 17. The faucet device M is a mixing faucet that is mounted on the wall of a bathroom or the like by the first crank leg 14 and the second crank leg 15.

[0010] Hereafter, for each component, the side on which the second operating section 17 is located will be the left side, the side on which the first operating section 16 is located will be the right side, the side on which the water discharge pipe 12 is located will be the front side, and the side on which the shower elbow 13 is located will be the rear side. In Figure 1, the positive direction of the X-axis is the right side, the negative direction of the X-axis is the left side, the positive direction of the Z-axis is the front side, and the negative direction of the Z-axis is the rear side. The X-axis is parallel to the axial direction of the main body 10. "Parallel" includes not only strictly parallel states but also generally parallel states. In Figure 1, the positive direction of the Y-axis is the upper side when the faucet device M is mounted on a wall, and the negative direction of the Y-axis is the lower side when the faucet device M is mounted on a wall.

[0011] The main body 10 is cylindrical in shape and elongated in the left-right direction. The water outlet pipe 12 extends forward from the bottom surface of the main body 10. A water outlet 18 is provided at the end of the water outlet pipe 12. The shower elbow 13 is connected to the rear surface of the main body 10. A shower hose (not shown) is connected to the shower elbow 13. A shower head (not shown) is connected to the end of the shower hose.

[0012] The first crank leg 14 is connected to the right side of the center in the left - right direction on the rear surface of the main body 10. The first crank leg 14 is a pipe for water supply. The inside of the first crank leg 14 is a water supply passage. The second crank leg 15 is connected to the left side of the center in the left - right direction on the rear surface of the main body 10. The second crank leg 15 is a pipe for hot water supply. The inside of the second crank leg 15 is a hot water supply passage.

[0013] The first operation part 16 is attached to the right - hand end of the main body 10. The first operation part 16 is an operation part for switching between water discharge and water stop of the faucet device M, switching between water discharge on the water discharge pipe 12 side and water discharge on the shower side, and adjusting the water discharge amount during water discharge. The first operation part 16 is operated by rotation.

[0014] The second operation part 17 is attached to the left - hand end of the main body 10. The second operation part 17 is an operation part for adjusting the temperature of the water discharged from the faucet device M. The second operation part 17 is operated by rotation.

[0015] As shown in FIG. 3, the main body 10 has a water passage 19 inside. The water passage 19 communicates with the downstream sides of the water supply passage of the first crank leg 14 and the hot water supply passage of the second crank leg 15. The water passage 19 has a passage for water, a passage for hot water, and a passage for mixed water in which water and hot water are mixed. The passage for water and the passage for hot water are formed upstream of a mixing part 40 described later. The passage for mixed water is formed downstream of the mixing part 40.

[0016] As shown in FIG. 2, the main body 10 has a long cylindrical shape in the left - right direction. Inside the main body 10, an axially - long space 10S is formed. At both the left and right ends of the main body 10, a first opening 21 and a second opening 22 are formed. The first opening 21 opens to the right side of the main body 10. The second opening 22 opens to the left side of the main body 10.

[0017] The main body portion 10 has a double structure having an outer pipe 23 and an inner pipe 24. The outer pipe 23 is made of metal. The outer pipe 23 is cylindrical. The inner surface of the outer pipe 23 is a smooth surface without irregularities. An opening (not shown) communicating with the water supply passage is formed in the outer pipe 23. A passage for water flowing in from the water supply passage is formed between the outer pipe 23 and the inner pipe 24.

[0018] The inner pipe 24 is made of resin. The inner pipe 24 is cylindrical. The inner pipe 24 forms a space 10S, a first opening 21, and a second opening 22. The first opening 21 is provided for arranging the opening / closing portion 50 inside the main body portion 10. The second opening 22 is provided for arranging the mixing portion 40 inside the main body portion 10. A hot water side opening (not shown) directly communicating with the hot water passage and a water side opening (not shown) communicating with the water passage are formed in the inner pipe 24. The hot water side opening and the water side opening are provided on the left side of the center in the left-right direction of the inner pipe 24.

[0019] A pipe sealing member 25 is arranged between the outer pipe 23 and the inner pipe 24. The pipe sealing member 25 is arranged at both left and right end portions of the outer pipe 23 and the inner pipe 24. The water passage is sealed by the left and right pipe sealing members 25.

[0020] Inside the main body portion 10, a mixing portion 40, an opening / closing portion 50, and a pressure relief portion 60 are arranged. The mixing portion 40, the opening / closing portion 50, and the pressure relief portion 60 are arranged on an axis L extending in the longitudinal direction of the space 10S of the main body portion 10. The axis L is parallel to the rotation axis of the mixing operation axis 43 and the extending direction of the opening / closing operation axis 53 described later.

[0021] The mixing portion 40 is arranged on the left side of the main body portion 10. The mixing portion 40 is inserted into the inside of the inner pipe 24 from the second opening 22 and assembled. The mixing portion 40 includes a thermostat type (with automatic temperature control function) hot water mixing valve. The mixing portion 40 includes a mixing case 41, a mixing valve body 42, a mixing operation axis 43, and a second operation portion 17.

[0022] The mixing case 41 has a water inlet and a hot water inlet (not shown). The inside of the mixing case 41 is in communication with the water passage via the water inlet. The inside of the mixing case 41 is in communication with the hot water passage via the hot water inlet.

[0023] The mixing case 41 has a mixing chamber 44. Water and hot water flowing into the mixing case 41 are mixed in the mixing chamber 44. The mixing chamber 44 houses a coil-shaped temperature-sensitive spring 46 made of shape memory alloy. The temperature-sensitive spring 46 expands and contracts in accordance with the temperature of the mixed water of water and hot water mixed inside the mixing chamber 44, adjusting the position of the mixing valve body 42.

[0024] The mixing valve body 42 moves from side to side, adjusting the amount of water flowing in from the water inlet and the amount of hot water flowing in from the hot water inlet. This changes the ratio of water and hot water mixed in the mixing chamber 44.

[0025] The mixing operation shaft 43 protrudes to the left from the second opening 22 and is connected to the second operating section 17. The mixing operation shaft 43 rotates when the second operating section 17 is operated, moving the mixing valve body 42.

[0026] The mixing section 40 is fixed to the inner pipe 24 by a second end member 26 and a second fixing member 27. The second end member 26 is located on the left side of the mixing section 40. The second fixing member 27 is fitted onto the outer circumference of the second end member 26. The second fixing member 27 is fixed to the left end of the inner pipe 24.

[0027] A sealing member 28 for the mixing section is positioned between the mixing section 40 and the inner pipe 24. The sealing member 28 for the mixing section is annular in shape and is in close contact with the outer surface of the mixing case 41 and the inner surface of the inner pipe 24. Multiple sealing members 28 for the mixing section are arranged at predetermined intervals in the left-right direction.

[0028] The inner pipe 24 has a wall portion 24W between the space where the mixing section 40 is located and the space where the opening / closing section 50 is located. An outlet 45 is formed in the wall portion 24W. The mixed water that has passed through the mixing section 40 flows out to the opening / closing section 50 side through the outlet 45.

[0029] The opening / closing section 50 is located on the right side of the main body section 10. The opening / closing section 50 is inserted into the inside of the inner pipe 24 through the first opening 21 and assembled. The opening / closing section 50 opens and closes the passage for the mixed water downstream of the mixing section 40.

[0030] The opening / closing section 50 includes an opening / closing case 51, an opening / closing valve body 52, an opening / closing operating shaft 53, and a first operating section 16. The opening / closing case 51 has an inlet 54, a discharge pipe side outlet 55, and a shower side outlet (not shown). The inlet 54 is formed at the left end of the opening / closing case 51. The inlet 54 is close to the outlet 45 of the inner pipe 24. The discharge pipe side outlet 55 communicates with the discharge pipe 12. The shower side outlet communicates with the shower elbow 13.

[0031] The on / off valve body 52 is a cylinder valve body. The on / off valve body 52 is housed inside the on / off case 51. The on / off valve body 52 has a discharge pipe side opening and a shower side opening (not shown). The discharge pipe side opening is positioned so that when the on / off valve body 52 is rotated it aligns with the discharge pipe side outlet 55 of the on / off case 51. The shower side opening is positioned so that when the on / off valve body 52 is rotated it aligns with the shower side outlet of the on / off case 51.

[0032] The opening / closing operation shaft 53 connects the first operating unit 16 and the opening / closing valve body 52 of the opening / closing unit 50. The opening / closing operation shaft 53 is positioned on the axis L of the space 10S of the main body 10. The rotation center of the opening / closing valve body 52 is parallel to the axis L. The opening / closing operation shaft 53 transmits the operation of the first operating unit 16 to the opening / closing valve body 52.

[0033] The opening / closing valve body 52 rotates when the first operating unit 16 is operated. When the discharge pipe side opening and the discharge pipe side outlet 55 are connected, the mixed water flows out to the discharge pipe 12 side. When the shower side opening and the shower side outlet are connected, the mixed water flows out to the shower side. The amount of water discharged is increased or decreased by increasing or decreasing the degree of overlap between the discharge pipe side opening and the discharge pipe side outlet 55, and between the shower side opening and the shower side outlet. When neither the discharge pipe side opening nor the discharge pipe side outlet 55, nor the shower side opening nor the shower side outlet are connected, the faucet device M stops the water flow.

[0034] The opening / closing section 50 is fixed to the inner pipe 24 by a first end member 29 and a first fixing member 31. The first end member 29 is located on the right side of the opening / closing section 50. The first fixing member 31 is fitted onto the outer circumference of the first end member 29. The first fixing member 31 is fixed to the right end of the inner pipe 24.

[0035] A sealing member 32 for the opening / closing section is positioned between the opening / closing section 50 and the inner pipe 24. The sealing member 32 is annular in shape and is in close contact with the outer surface of the opening / closing case 51 and the inner surface of the inner pipe 24. Multiple sealing members 32 are arranged at predetermined intervals in the left-right direction.

[0036] The pressure relief section 60 is located downstream of the mixing section 40 and on the primary side of the opening / closing section 50. The primary side of the opening / closing section 50 is upstream of the opening that is opened and closed by the rotation of the opening / closing valve body 52. ​​The secondary side of the opening / closing section 50 is downstream of the opening that is opened and closed by the rotation of the opening / closing valve body 52.

[0037] The pressure relief section 60 is located inside the opening / closing section 50. The pressure relief section 60 is formed on the opening / closing operation shaft 53. When the water pressure in the water passage 19 on the primary side of the opening / closing section 50 exceeds a predetermined level, the pressure relief section 60 releases the water pressure in the water passage 19 on the primary side of the opening / closing section 50 into the internal space S. The internal space S is in communication with the outside of the main body section 10.

[0038] As shown in Figures 3 to 6, the pressure relief section 60 includes a shaft hole 61, a sealing member 63 for the relief section, a shaft 62, a mounting member 64, and an elastic body 65. The shaft hole 61 is formed inside the opening / closing operation shaft 53. The shaft hole 61 extends to the right from the end face of the opening / closing operation shaft 53 along the axis L. The left end of the shaft hole 61 is an opening. The shaft hole 61 communicates with the outside of the opening / closing operation shaft 53 through a through hole 66. The shaft hole 61 and the through hole 66 are contained within the internal space S.

[0039] As shown in Figure 5, the relief seal member 63 is positioned inside the shaft hole 61. The relief seal member 63 is annular in shape. The relief seal member 63 is prevented from detaching from the shaft hole 61 by the mounting member 64. The relief seal member 63 is positioned to the left of the through hole 66.

[0040] The shaft 62 fits into the shaft hole 61 and passes through the relief seal member 63. The shaft 62 is cylindrical. The outer diameter of the shaft 62 is variable. The shaft 62 has a seal portion 62A and a non-seal portion 62B. The seal portion 62A is formed to the right of the non-seal portion 62B. The outer diameter of the seal portion 62A is larger than that of the non-seal portion 62B. The seal portion 62A is in close contact with the inner circumferential surface of the relief seal member 63. The non-seal portion 62B forms a gap between itself and the inner circumferential surface of the relief seal member 63.

[0041] The shaft 62 is equipped with a flange portion 67. The flange portion 67 is provided at the left end of the shaft 62. The flange portion 67 and the shaft 62 move together as a single unit. The shaft 62 is a movable member that moves toward the first opening 21 when the water pressure in the water passage 19 on the primary side of the opening / closing section 50 exceeds a predetermined value.

[0042] The mounting member 64 is attached to the tip of the opening / closing operating shaft 53 (see Figure 4). The mounting member 64 has a contact portion 68, a hook portion 71, and a cylindrical portion 69. The contact portion 68 is positioned to cover the end face of the opening / closing operating shaft 53. A first through hole 72 is formed in the contact portion 68. The shaft 62 is inserted through the first through hole 72.

[0043] The hook portion 71 extends to the right from the contact portion 68. The hook portion 71 hooks onto the receiving portion 73 provided on the outer circumferential surface of the opening / closing operation shaft 53. This holds the mounting member 64 in place while it is attached to the opening / closing operation shaft 53.

[0044] As shown in Figure 5, the cylindrical portion 69 is provided protruding to the right from the contact portion 68. The cylindrical portion 69 is fitted into the left end of the shaft hole 61.

[0045] The elastic body 65 is housed inside the cylindrical portion 69. The elastic body 65 is a coil spring. The elastic force of the elastic body 65 acts in a direction that moves the shaft 62 to the left. The elastic body 65 is mounted around the shaft 62. One end of the elastic body 65 abuts against the flange portion 67, and the other end abuts against the bottom wall of the cylindrical portion 69. The elastic body 65 expands and contracts between the flange portion 67 and the bottom wall in a direction parallel to the axis L. The elastic body 65 contracts until the flange portion 67 abuts against the contact portion 68. A second insertion hole 74 is formed in the bottom wall of the cylindrical portion 69. The shaft 62 is inserted through the second insertion hole 74.

[0046] The operation of the pressure relief section 60 will now be explained. When the water pressure in the water passage 19 on the primary side of the opening / closing section 50 is lower than a predetermined value, the pressure relief section 60 closes the water passage 19 on the primary side of the opening / closing section 50, as shown in Figure 5. This state is referred to as the closed state of the pressure relief section 60. In the closed state of the pressure relief section 60, the seal portion 62A of the shaft 62 is in close contact with the relief section seal member 63. As a result, the water passage 19 on the primary side of the opening / closing section 50 is sealed. The flange portion 67 is separated to the left from the contact portion 68.

[0047] For example, if the water pressure in the primary water passage 19 of the opening / closing section 50 rises above a predetermined value due to water freezing or other reasons, the force acting on the shaft 62 in a rightward direction increases. As a result, the shaft 62 moves to the right while compressing the elastic body 65. Due to the movement of the shaft 62, as shown in Figure 6, the non-sealed portion 62B of the shaft 62 is positioned at the location of the relief seal member 63. As a result, the pressure relief section 60 opens the primary water passage 19 of the opening / closing section 50. This state is referred to as the open state of the pressure relief section 60. Due to the gap between the relief seal member 63 and the non-sealed portion 62B, the water pressure in the primary water passage 19 of the opening / closing section 50 is released into the shaft hole 61 and becomes lower. At this time, the mixed water in the primary water passage 19 of the opening / closing section 50 leaks out into the shaft hole 61. The shaft hole 61 communicates with a gap formed inside the main body 10 by a through hole 66. The gaps formed inside the main body 10 are specifically the gap between the opening / closing section 50 and the first end member 29, the gap between the first end member 29 and the inner tube 24, and the gap between the main body 10 and the first operating section 16. These gaps are in communication with the outside of the main body 10.

[0048] When the water pressure in the primary water passage 19 of the opening / closing section 50 decreases due to the pressure relief section 60, the flange 67 is pushed to the left by the elastic force of the elastic body 65, and the shaft 62 moves to the left. As a result, the pressure relief section 60 returns to its closed state. The seal portion 62A of the shaft 62 comes into close contact with the relief section seal member 63, and the primary water passage 19 of the opening / closing section 50 is sealed.

[0049] The embodiment configured as described above provides the following effects. The faucet device M comprises a main body 10, a mixing unit 40, an opening / closing unit 50, and a pressure relief unit 60. The main body 10 has a water passage 19 inside. The mixing unit 40 is located inside the main body 10 and mixes the hot and cold water flowing into the water passage 19. The opening / closing unit 50 is located inside the main body 10 and opens and closes the water passage 19 downstream of the mixing unit 40. The pressure relief unit 60 is located inside the main body 10 and releases water pressure when the water pressure in the water passage 19 on the primary side of the opening / closing unit 50 exceeds a predetermined value. The pressure relief unit 60 releases water pressure into the internal space S of the main body 10. The internal space S is in communication with the outside of the main body 10.

[0050] With this configuration, the pressure relief section 60 releases the water pressure into the internal space S of the main body 10, so it does not affect the appearance of the main body 10. Since the internal space S of the main body 10 is in communication with the outside of the main body 10, the excess water pressure in the primary water passage 19 of the opening / closing section 50 is released to the outside of the main body 10. Therefore, the excess water pressure can be released to the outside without affecting the appearance of the faucet device M.

[0051] An axially elongated space 10S is formed inside the main body 10. The mixing section 40, the opening / closing section 50, and the pressure relief section 60 are arranged on the axis L of the space 10S in the main body 10. With this configuration, excess water pressure can be released to the outside without affecting the appearance of the faucet device M.

[0052] The pressure relief section 60 is located downstream of the mixing section 40. This configuration allows excess water pressure to be released to the outside downstream of the mixing section 40.

[0053] The pressure relief section 60 has a shaft 62 that moves axially in the space 10S of the main body section 10 when the water pressure in the water passage 19 on the primary side of the opening / closing section 50 exceeds a predetermined value. The shaft 62 moves toward the first opening 21. The pressure relief section 60 releases the water pressure by the movement of the shaft 62. With this configuration, since the shaft 62 moves axially in the space 10S of the main body section 10, the main body section 10 can be made compact.

[0054] The pressure relief section 60 is located inside the opening / closing section 50. This configuration allows the main body 10 to be made more compact.

[0055] The opening / closing section 50 includes an opening / closing valve body 52, a first operating section 16, and an opening / closing operating shaft 53. The first operating section 16 rotatably operates the opening / closing valve body 52. ​​The opening / closing operating shaft 53 connects the opening / closing valve body 52 and the first operating section 16. The pressure relief section 60 is formed on the opening / closing operating shaft 53. This configuration allows the main body 10 to be made compact.

[0056] <Embodiment 2> Next, a faucet device M according to Embodiment 2, which embodies the present disclosure, will be described with reference to Figures 7 to 9. The faucet device M of this embodiment differs from Embodiment 1 in that the mixing unit 87 is a movable member. Components similar to those in Embodiment 1 are denoted by the same reference numerals, and redundant explanations are omitted.

[0057] The faucet device M, like in Embodiment 1, comprises a main body 10, a water outlet pipe 12, a shower elbow 13, a first crank leg 14, a second crank leg 15, a first operating section 16, and a second operating section 17. The main body 10, like in Embodiment 1, has a double structure with an outer pipe 23 and an inner pipe 24. Inside the main body 10, like in Embodiment 1, a mixing section 87 and an opening / closing section 50 are arranged.

[0058] The pressure relief section 80 is provided in the mixing section 87. The pressure relief section 80 includes an elastic body 81, a sealing member 85 for the relief section, a non-sealing surface 82, and a mixing section 87 as a movable member. Similar to Embodiment 2, the mixing section 87 includes a mixing case 41, a mixing valve body 42, a mixing operation shaft 43, and a second operation section 17. The mixing section 87 moves toward the second opening 22 when the water pressure in the water passage 19 on the primary side of the opening / closing section 50 exceeds a predetermined value. The second end member 26 moves together with the mixing section 87.

[0059] The elastic body 81 is sandwiched between the second end member 26 and the second fixing member 27. As shown in Figure 8, the elastic body 81 is a wave spring made by winding a plate-shaped steel wire in a spiral shape.

[0060] The second end member 26 has a first surface 83 perpendicular to the axis L. The second fixing member 27 has a second surface 84 perpendicular to the axis L. "Perpendicular" includes not only strictly perpendicular states but also generally perpendicular states. The elastic body 81 expands and contracts between the first surface 83 and the second surface 84 in a direction parallel to the axis L.

[0061] The relief seal member 85 is one of several mixing seal members 28. The relief seal member 85 is positioned between the outer circumferential surface of the mixing case 41 and the inner circumferential surface of the inner pipe 24. The relief seal member 85 is fitted into a seal groove 86 formed on the outer circumferential surface of the mixing case 41.

[0062] The non-sealing surface 82 is formed on the inner circumferential surface of the inner pipe 24. The non-sealing surface 82 is located to the left of the relief sealing member 85. The non-sealing surface 82 is inclined with respect to the axis L. The non-sealing surface 82 gradually moves away from the outer circumferential surface of the mixing case 41 from the right to the left.

[0063] When the water pressure in the primary water passage 19 of the opening / closing section 50 is lower than a predetermined value, the pressure relief section 80 closes the primary water passage 19 of the opening / closing section 50, as shown in Figure 7. In the closed state of the pressure relief section 80, the relief section sealing member 85 is in close contact with the inner circumferential surface of the inner pipe 24. When the water pressure in the primary water passage 19 of the opening / closing section 50 rises above a predetermined value, the leftward force acting on the mixing section 87 increases, causing the mixing section 87 to move to the left while compressing the elastic body 81. The relief section sealing member 85 moves to the left together with the mixing section 87 and is positioned at the non-sealed surface 82, as shown in Figure 9. As a result, the pressure relief section 80 opens the primary water passage 19 of the opening / closing section 50. The gap between the relief sealing member 85 and the non-sealed surface 82 reduces the water pressure in the primary side water passage 19 of the opening / closing section 50 by allowing it to escape into the gap between the inner pipe 24 and the mixing case 41. The gap between the inner pipe 24 and the mixing case 41 is included in the internal space S.

[0064] When the water pressure in the primary water passage 19 of the opening / closing section 50 decreases due to the pressure relief section 80, the mixing section 87 is pushed to the right by the elastic force of the elastic body 81 and moves to the right. As a result, the pressure relief section 80 returns to a closed state. The sealing member 85 for the relief section becomes in close contact with the inner circumferential surface of the inner pipe 24, and the primary water passage 19 of the opening / closing section 50 is sealed.

[0065] As described above, in this embodiment, similar to Embodiment 1, the pressure relief section 80 releases water pressure into the internal space S of the main body 10, and therefore does not affect the appearance of the main body 10. Since the internal space S of the main body 10 is in communication with the outside of the main body 10, the excess water pressure in the primary water passage 19 of the opening / closing section 50 is released to the outside of the main body 10. Therefore, the excess water pressure can be released to the outside without affecting the appearance of the faucet device M.

[0066] The pressure relief section 80 has a mixing section 87 that moves axially in the main body section 10 when the water pressure in the water passage 19 on the primary side of the opening / closing section 50 exceeds a predetermined value. The mixing section 87 moves toward the second opening 22. The pressure relief section 80 relieves the water pressure by the movement of the mixing section 87. With this configuration, since the mixing section 87 moves axially in the space 10S of the main body section 10, the main body section 10 can be made compact, similar to Embodiment 1.

[0067] <Embodiment 3> Next, a faucet device M according to Embodiment 3, which embodies the present disclosure, will be described with reference to Figures 10 and 11. The pressure relief section 90 of the faucet device M in this embodiment differs from Embodiment 2 in that the sealing member 95 for the relief section is a movable member. Components similar to those in Embodiment 2 are denoted by the same reference numerals, and redundant explanations are omitted.

[0068] The faucet device M, like in Embodiment 1, comprises a main body 10, a water outlet pipe 12, a shower elbow 13, a first crank leg 14, a second crank leg 15, a first operating section 16, and a second operating section 17. The main body 10, like in Embodiment 1, has a double structure with an outer pipe 23 and an inner pipe 24. Inside the main body 10, like in Embodiment 1, a mixing section 40 and an opening / closing section 50 are arranged.

[0069] The pressure relief section 90 comprises a relief section sealing member 95, an elastic body 81, an annular body 91, and a non-sealing surface 82. The relief section sealing member 95 is one of a plurality of mixing section sealing members 28, similar to Embodiment 2. The relief section sealing member 95 is restricted from moving to the right by a stopper surface 92 formed on the mixing case 41. The stopper surface 92 is perpendicular to the axis L.

[0070] The elastic body 81 is a wave spring, similar to embodiment 2.

[0071] The annular body 91 is mounted on the outer circumferential surface of the mixing case 41. The annular body 91 is positioned to the left of the relief sealing member 95. The annular body 91 moves together with the relief sealing member 95 in the left-right direction.

[0072] The annular body 91 has a first surface 94 perpendicular to the axis L. The mixed case 41 has a second surface 93 perpendicular to the axis L. The elastic body 81 expands and contracts between the first surface 94 and the second surface 93 in a direction parallel to the axis L.

[0073] The non-sealing surface 82 is formed on the inner circumferential surface of the inner tube 24, similar to Embodiment 2.

[0074] When the water pressure in the primary water passage 19 of the opening / closing section 50 is lower than a predetermined value, the pressure relief section 90 closes the primary water passage 19 of the opening / closing section 50, as shown in Figure 10. In the closed state of the pressure relief section 90, the relief sealing member 95 is in close contact with the inner surface of the inner pipe 24. When the water pressure in the primary water passage 19 of the opening / closing section 50 rises above a predetermined value, the leftward force acting on the relief sealing member 95 increases, causing the relief sealing member 95 to push the annular body 91 to the left. The relief sealing member 95 moves to the left together with the annular body 91, compressing the elastic body 81, and is positioned at the non-seal surface 82, as shown in Figure 11. As a result, the pressure relief section 90 opens the primary water passage 19 of the opening / closing section 50. Similar to Embodiment 2, the water pressure in the primary water passage 19 of the opening / closing section 50 is reduced by the gap between the relief sealing member 95 and the non-sealed surface 82, allowing the pressure to escape into the gap between the inner pipe 24 and the mixing case 41.

[0075] When the water pressure in the primary water passage 19 of the opening / closing section 50 decreases due to the pressure relief section 90, the elastic force of the elastic body 81 pushes the annular body 91 to the right, and it moves to the right together with the relief section sealing member 95. As a result, the pressure relief section 90 returns to a closed state. The relief section sealing member 95 comes into close contact with the inner circumferential surface of the inner pipe 24, and the primary water passage 19 of the opening / closing section 50 is sealed.

[0076] As described above, in this embodiment, similar to Embodiment 2, the pressure relief section 90 releases the water pressure into the internal space S of the main body 10, and therefore does not affect the appearance of the main body 10. Since the internal space S of the main body 10 is in communication with the outside of the main body 10, the excess water pressure in the primary water passage 19 of the opening / closing section 50 is released to the outside of the main body 10. Therefore, the excess water pressure can be released to the outside without affecting the appearance of the faucet device M.

[0077] The pressure relief section 90 has a relief sealing member 95 that moves axially in the main body 10 when the water pressure in the water passage 19 on the primary side of the opening / closing section 50 exceeds a predetermined value. The relief sealing member 95 moves toward the second opening 22. The pressure relief section 90 releases the water pressure by the movement of the relief sealing member 95. With this configuration, since the relief sealing member 95 moves axially in the space 10S of the main body 10, the main body 10 can be made compact, similar to Embodiment 2.

[0078] <Other Embodiments> This disclosure is not limited to the embodiments described above and in the drawings, and the technical scope of this disclosure also includes, for example, the following embodiments. (1) In the above embodiment, the first operating section 16 and the second operating section 17 are operated by rotation. However, the first operating section and the second operating section may be operated by pushing. (2) In the above embodiment, the faucet device M can select either water discharge from the discharge pipe 12 or water discharge from the shower. However, the faucet device may only discharge water from the discharge pipe or only discharge water from the shower. (3) In the above embodiment, the main body 10 is exposed to the outside. However, the main body may be covered with a cover member. (4) In embodiments 2 and 3 described above, the elastic body 81 is a wave spring. However, it is not limited to this, and a coil spring, a disc spring, or a C-ring shaped wave spring may be used as the elastic body. (5) In the above embodiment, the main body 10 has a double structure having an outer tube 23 and an inner tube 24. However, the main body may be composed of a single tube. (6) In the above embodiment, the faucet device M is a mixing faucet that is mounted on the wall of a bathroom or the like. However, the faucet device may be mounted on a kitchen or vanity, for example. (7) In the above embodiment, the pressure relief section 60 releases the water pressure in the water passage 19 into the internal space S of the main body 10. However, the pressure relief section may release the water pressure directly into the external space of the main body. (8) In the above embodiment, the external shape of the main body 10 was illustrated. However, the external shape of the main body can be any shape as long as a long space is formed inside the main body. The external shape of the main body may be, for example, a flat rectangular shape. [Explanation of Symbols]

[0079] L...axis, M...faucet device, S...internal space, 10...main body, 10S...space, 16...first operating part (operating part), 19...water passage, 21...first opening (opening), 22...second opening (opening), 40...mixing part, 50...opening / closing part, 52...opening / closing valve body (cylinder valve body), 53...opening / closing operating shaft (rotating operating shaft), 60, 80, 90...pressure relief part, 62...shaft (movable member), 87...mixing part (movable member), 95...seal member for relief part (movable member)

Claims

1. A main body having a water passage inside, A mixing unit is located inside the main body and mixes the hot and cold water that flows into the water passage, An opening / closing unit is located inside the main body and opens and closes the water passage downstream of the mixing section, The main body is disposed inside the main body and includes a pressure relief section having an elastic body, which closes when the water pressure in the water channel is below a predetermined value due to the elastic force of the elastic body, and opens when the pressure exceeds the predetermined value due to the elastic force of the elastic body, thereby releasing the water pressure. The pressure relief section releases the water pressure into an internal space formed inside the main body. The aforementioned internal space is in communication with the outside of the main body, and is a faucet device.

2. A main body having a water passage inside, A mixing unit is located inside the main body and mixes the hot and cold water that flows into the water passage, An opening / closing unit is located inside the main body and opens and closes the water passage downstream of the mixing section, The main body is disposed inside the main body and includes a pressure relief section having an elastic body, which closes when the water pressure in the water channel is below a predetermined value due to the elastic force of the elastic body, and opens when the pressure exceeds the predetermined value due to the elastic force of the elastic body, thereby releasing the water pressure. A long space in the axial direction is formed inside the main body. The faucet device is arranged such that the mixing section, the opening / closing section, and the pressure relief section are located on the axis of the long space of the main body.

3. The faucet device according to any one of claims 1 to 2, wherein the pressure relief section is located downstream of the mixing section.

4. A long space in the axial direction is formed inside the main body. The faucet device according to any one of claims 1 to 3, wherein the pressure relief section has a movable member that moves in the axial direction of the long space when the water pressure in the water passage exceeds a predetermined value, and the water pressure is relieved by the movement of the movable member.

5. A long space in the axial direction is formed inside the main body, and an opening is formed on one end of the main body in the axial direction. The faucet device according to any one of claims 1 to 3, wherein the pressure relief section has a movable member that moves toward the opening when the water pressure in the water channel exceeds a predetermined value, and the water pressure is relieved by the movement of the movable member.

6. The faucet device according to any one of claims 1 to 5, wherein the pressure relief portion is provided inside the opening / closing portion.

7. The opening / closing unit comprises a cylinder valve body, an operating unit for rotatably operating the cylinder valve body, and a rotating operating shaft connecting the cylinder valve body and the operating unit. The faucet device according to any one of claims 1 to 6, wherein the pressure relief portion is formed on the rotating operating shaft.

8. A bathroom in which a faucet device according to any one of claims 1 to 7 is mounted on the wall.

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