Faucet device

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. The pressure relief valve opens the flow path of the main body to the outside of the main body when the pressure of the water in the main body suddenly rises. Thereby, breakage of 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 of the present disclosure includes a main body portion having a water passage inside, a mixing portion disposed inside the main body portion for mixing hot and cold water flowing into the water passage, an opening and closing portion disposed inside the main body portion for opening and closing the water passage on the downstream side of the mixing portion, and a pressure relief portion disposed inside the main body portion for relieving the water pressure when the water pressure in the water passage reaches a predetermined value or more. The pressure relief portion relieves the water pressure into the internal space of the main body portion, and the internal space communicates with the outside of the main body portion.

[0007] The faucet device of the present disclosure includes a main body portion having a water passage inside, a mixing portion disposed inside the main body portion for mixing hot and cold water flowing into the water passage, an opening and closing portion disposed inside the main body portion for opening and closing the water passage on the downstream side of the mixing portion, and a pressure relief portion disposed inside the main body portion for relieving the water pressure when the water pressure in the water passage reaches a predetermined value or more. A long space is formed inside the main body portion in the axial direction, and the mixing portion, the opening and closing portion, and the pressure relief portion are disposed on the axis of the long space of the main body portion.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Mode for Carrying Out the Invention

[0009] <Embodiment 1> As shown in FIG. 1, the faucet device M includes a main body portion 10, a water discharge pipe 12, a shower elbow 13, a first crank leg 14, a second crank leg 15, a first operation portion 16, and a second operation portion 17. The faucet device M is a mixing faucet attached to a wall surface in a bathroom or the like by the first crank leg 14 and the second crank leg 15.

[0010] Hereinafter, in each component member, the side where the second operation portion 17 is provided is the left side, the side where the first operation portion 16 is provided is the right side, the side where the water discharge pipe 12 is provided is the front side, and the side where the shower elbow 13 is provided is the rear side. In FIG. 1, the positive direction side of the X-axis is the right side, the negative direction side of the X-axis is the left side, the positive direction side of the Z-axis is the front side, and the negative direction side of the Z-axis is the rear side. The X-axis is parallel to the axial direction of the main body portion 10. "Parallel" includes a state that is generally parallel in addition to a strictly parallel state. The positive direction side of the Y-axis in FIG. 1 is the upper side in the state where the faucet device M is attached to the wall surface, and the negative direction side of the Y-axis is the lower side in the state where the faucet device M is attached to the wall surface.

[0011] The main body portion 10 has a long cylindrical shape in the left-right direction. The water discharge pipe 12 extends forward from the lower surface of the main body portion 10. A water discharge port 18 is provided at the tip of the water discharge pipe 12. The shower elbow 13 is connected to the rear surface of the main body portion 10. A shower hose (not shown) is connected to the shower elbow 13. A shower head (not shown) is connected to the tip 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 amount of water discharged during water discharge. The first operation part 16 is rotationally operated.

[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 rotationally operated.

[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 tube 23 and an inner tube 24. The outer tube 23 is made of metal. The outer tube 23 is cylindrical. The inner surface of the outer tube 23 is a smooth surface without irregularities. An opening (not shown) communicating with the water supply passage is formed in the outer tube 23. A passage for water flowing in from the water supply passage is formed between the outer tube 23 and the inner tube 24.

[0018] The inner tube 24 is made of resin. The inner tube 24 is cylindrical. The inner tube 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 supply passage and a water side opening (not shown) communicating with the water passage are formed in the inner tube 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 tube 24.

[0019] A pipe sealing member 25 is arranged between the outer tube 23 and the inner tube 24. The pipe sealing member 25 is arranged at both left and right end portions of the outer tube 23 and the inner tube 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 a mixing operation shaft 43 and the extending direction of an opening / closing operation shaft 53, which will be 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 tube 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 shaft 43, and a second operation portion 17.

[0022] The mixing case 41 has a water inlet and a hot water inlet (not shown). The interior of the mixing case 41 communicates with a water passage through the water inlet. The interior of the mixing case 41 communicates with a hot water passage through the hot water inlet.

[0023] The mixing case 41 has a mixing chamber 44. The water and hot water flowing into the interior of the mixing case 41 are mixed in the mixing chamber 44. A coil-shaped temperature-sensitive spring 46 made of a shape memory alloy is accommodated in the mixing chamber 44. The temperature-sensitive spring 46 expands and contracts according to the temperature of the mixed water of the water and hot water mixed inside the mixing chamber 44, and adjusts the position of the mixing valve body 42.

[0024] The mixing valve body 42 moves in the left-right direction and adjusts the inflow rate of the water flowing in from the water inlet and the inflow rate of the hot water flowing in from the hot water inlet. As a result, the ratio of the water and hot water mixed in the mixing chamber 44 changes.

[0025] The mixing operation shaft 43 protrudes leftward from the second opening 22 and is connected to the second operation portion 17. The mixing operation shaft 43 rotates by the operation of the second operation portion 17 and moves the mixing valve body 42.

[0026] The mixing portion 40 is fixed to the inner pipe 24 by the second end member 26 and the second fixing member 27. The second end member 26 is disposed on the left side of the mixing portion 40. The second fixing member 27 fits on the outer peripheral side of the second end member 26. The second fixing member 27 is fixed to the left end portion of the inner pipe 24.

[0027] A sealing member 28 for the mixing portion is disposed between the mixing portion 40 and the inner pipe 24. The sealing member 28 for the mixing portion is annular and is in close contact with the outer peripheral surface of the mixing case 41 and the inner peripheral surface of the inner pipe 24. A plurality of sealing members 28 for the mixing portion are arranged at a predetermined interval in the left-right direction.

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

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

[0030] The opening / closing part 50 has an opening / closing case 51, an opening / closing valve body 52, an opening / closing operation shaft 53, and a first operation part 16. The opening / closing case 51 has an inlet 54, an outlet on the water discharge pipe side 55, and an outlet on the shower side (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 outlet on the water discharge pipe side 55 communicates with the water discharge pipe 12. The outlet on the shower side communicates with the shower elbow 13.

[0031] The opening / closing valve body 52 is a cylinder valve body. The opening / closing valve body 52 is housed inside the opening / closing case 51. The opening / closing valve body 52 is formed with an opening on the water discharge pipe side (not shown) and an opening on the shower side. The opening on the water discharge pipe side is formed at a position that overlaps with the outlet on the water discharge pipe side 55 of the opening / closing case 51 when the opening / closing valve body 52 rotates. The opening on the shower side is formed at a position that overlaps with the outlet on the shower side of the opening / closing case 51 when the opening / closing valve body 52 rotates.

[0032] The opening / closing operation shaft 53 connects the first operation part 16 and the opening / closing valve body 52 of the opening / closing part 50. The opening / closing operation shaft 53 is arranged on the axis L of the space 10S of the main body part 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 operation part 16 to the opening / closing valve body 52.

[0033] By operating the first operation unit 16, the on-off valve body 52 rotates. As a result, when the opening on the water discharge pipe side and the water discharge pipe side outlet 55 communicate with each other, the mixed water flows out to the water discharge pipe 12 side. When the opening on the shower side and the shower side outlet communicate with each other, the mixed water flows out to the shower side. The amount of water discharged is increased or decreased according to the degree of overlap between the opening on the water discharge pipe side and the water discharge pipe side outlet 55 and the degree of increase or decrease in the degree of overlap between the opening on the shower side and the shower side outlet. When neither the opening on the water discharge pipe side and the water discharge pipe side outlet 55 nor the opening on the shower side and the shower side outlet communicate with each other, the faucet device M is shut off.

[0034] The opening and closing part 50 is fixed to the inner pipe 24 by the first end member 29 and the first fixing member 31. The first end member 29 is disposed on the right side of the opening and closing part 50. The first fixing member 31 fits on the outer peripheral side of the first end member 29. The first fixing member 31 is fixed to the right end of the inner pipe 24.

[0035] An opening and closing part seal member 32 is disposed between the opening and closing part 50 and the inner pipe 24. The opening and closing part seal member 32 is annular and is in close contact with the outer peripheral surface of the opening and closing case 51 and the inner peripheral surface of the inner pipe 24. A plurality of opening and closing part seal members 32 are arranged at a predetermined interval in the left-right direction.

[0036] The pressure relief part 60 is disposed on the downstream side of the mixing part 40 and on the primary side of the opening and closing part 50. The primary side of the opening and closing part 50 is upstream of the opening opened and closed by the rotation of the on-off valve body 52. The secondary side of the opening and closing part 50 is downstream of the opening opened and closed by the rotation of the on-off valve body 52.

[0037] The pressure relief part 60 is provided inside the opening and closing part 50. The pressure relief part 60 is formed on the opening and closing operation shaft 53. When the pressure of the water in the water passage 19 on the primary side of the opening and closing part 50 becomes a predetermined value or more, the pressure relief part 60 releases the pressure of the water in the water passage 19 on the primary side of the opening and closing part 50 to the internal space S. The internal space S communicates with the outside of the main body part 10.

[0038] As shown in FIGS. 3 to 6, the pressure relief portion 60 has a shaft hole 61, a seal member 63 for the relief portion, 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 along the axis L to the right from the end face of the opening / closing operation shaft 53. 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 included in the internal space S.

[0039] As shown in FIG. 5, the seal member 63 for the relief portion is disposed inside the shaft hole 61. The seal member 63 for the relief portion has an annular shape. The seal member 63 for the relief portion is prevented from detaching from the shaft hole 61 by the mounting member 64. The seal member 63 for the relief portion is disposed on the left side of the through hole 66.

[0040] The shaft 62 fits into the shaft hole 61 and penetrates the seal member 63 for the relief portion. The shaft 62 has a cylindrical shape. The outer diameter dimension 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 on the right side of the non-seal portion 62B. The outer diameter dimension of the seal portion 62A is larger than the outer diameter dimension of the non-seal portion 62B. The seal portion 62A is in close contact with the inner peripheral surface of the seal member 63 for the relief portion. The non-seal portion 62B forms a gap with the inner peripheral surface of the seal member 63 for the relief portion.

[0041] The shaft 62 is provided with a flange portion 67. The flange portion 67 is provided at the left end portion of the shaft 62. The flange portion 67 and the shaft 62 move integrally. The shaft 62 is a moving 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 portion 50 reaches a predetermined value or more.

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

[0043] The hooking portion 71 extends rightward from the abutting portion 68. The hooking portion 71 is hooked on a receiving portion 73 provided on the outer peripheral surface of the opening / closing operation shaft 53. Thereby, the mounting member 64 is held in a state of being mounted on the opening / closing operation shaft 53.

[0044] As shown in FIG. 5, the cylindrical portion 69 is provided so as to protrude rightward from the abutting portion 68. The cylindrical portion 69 is fitted into the left end portion of the shaft hole 61.

[0045] The elastic body 65 is accommodated 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 to move the shaft 62 to the left side. 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 in a direction parallel to the axis line L between the flange portion 67 and the bottom wall. The elastic body 65 contracts until the flange portion 67 abuts against the abutting 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 portion 60 will be described. When the water pressure in the water passage 19 on the primary side of the opening / closing portion 50 is lower than a predetermined value, the pressure relief portion 60 closes the water passage 19 on the primary side of the opening / closing portion 50 as shown in FIG. 5. This state is referred to as the closed state of the pressure relief portion 60. In the closed state of the pressure relief portion 60, the seal portion 62A of the shaft 62 is in close contact with the seal member 63 for the relief portion. Thereby, the water passage 19 on the primary side of the opening / closing portion 50 is sealed. The flange portion 67 is separated from the abutting portion 68 to the left side.

[0047] For example, when the water pressure in the water passage 19 on the primary side of the opening / closing part 50 becomes higher than a predetermined value due to freezing of water or the like, the rightward force applied to the shaft 62 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 FIG. 6, the non-sealing part 62B of the shaft 62 is disposed at the position of the sealing member 63 for the relief part. Thereby, the pressure relief part 60 opens the water passage 19 on the primary side of the opening / closing part 50. This state is referred to as the open state of the pressure relief part 60. Due to the gap between the sealing member 63 for the relief part and the non-sealing part 62B, the water pressure in the water passage 19 on the primary side of the opening / closing part 50 is released to the shaft hole 61 and becomes lower. At this time, the mixed water in the water passage 19 on the primary side of the opening / closing part 50 leaks out to the shaft hole 61. The shaft hole 61 communicates with the gap formed inside the main body part 10 by the through hole 66. Specifically, the gap formed inside the main body part 10 is, for example, the gap formed between the opening / closing part 50 and the first end member 29, the gap formed between the first end member 29 and the inner pipe 24, the gap formed between the main body part 10 and the first operation part 16, and the like. These gaps communicate with the outside of the main body part 10.

[0048] When the water pressure in the water passage 19 on the primary side of the opening / closing part 50 is lowered by the pressure relief part 60, the flange part 67 is pushed to the left by the elastic force of the elastic body 65, and the shaft 62 moves to the left. Thereby, the pressure relief part 60 returns to the closed state. The sealing part 62A of the shaft 62 comes into close contact with the sealing member 63 for the relief part, and the water passage 19 on the primary side of the opening / closing part 50 is sealed.

[0049] According to the embodiment configured as described above, the following effects are achieved. The faucet device M includes a main body portion 10, a mixing portion 40, an opening / closing portion 50, and a pressure relief portion 60. The main body portion 10 has a water passage 19 inside. The mixing portion 40 is disposed inside the main body portion 10 and mixes hot and cold water that has flowed into the water passage 19. The opening / closing portion 50 is disposed inside the main body portion 10 and opens and closes the water passage 19 on the downstream side of the mixing portion 40. The pressure relief portion 60 is disposed inside the main body portion 10 and relieves the water pressure when the water pressure in the water passage 19 on the primary side of the opening / closing portion 50 reaches a predetermined value or more. The pressure relief portion 60 relieves the water pressure into the internal space S of the main body portion 10. The internal space S communicates with the outside of the main body portion 10.

[0050] According to this configuration, since the pressure relief portion 60 relieves the water pressure into the internal space S of the main body portion 10, it does not affect the appearance of the main body portion 10. Since the internal space S of the main body portion 10 communicates with the outside of the main body portion 10, the excessive water pressure in the water passage 19 on the primary side of the opening / closing portion 50 is released to the outside of the main body portion 10. Therefore, the excessive water pressure can be released to the outside without affecting the appearance of the faucet device M.

[0051] Inside the main body portion 10, an axially long space 10S is formed. The mixing portion 40, the opening / closing portion 50, and the pressure relief portion 60 are disposed on the axis L of the space 10S of the main body portion 10. According to this configuration, the excessive water pressure can be released to the outside without affecting the appearance of the faucet device M.

[0052] The pressure relief portion 60 is disposed on the downstream side of the mixing portion 40. According to this configuration, the excessive water pressure can be released to the outside on the downstream side of the mixing portion 40.

[0053] The pressure relief portion 60 has a shaft 62 that moves in the axial direction of the space 10S of the main body portion 10 when the water pressure in the water passage 19 on the primary side of the opening / closing portion 50 reaches a predetermined value or more. The shaft 62 moves toward the first opening 21. The pressure relief portion 60 relieves the water pressure by the movement of the shaft 62. According to this configuration, since the shaft 62 moves in the axial direction of the space 10S of the main body portion 10, the main body portion 10 can be made compact.

[0054] The pressure relief portion 60 is provided inside the opening / closing portion 50. According to this configuration, the main body portion 10 can be made compact.

[0055] The opening / closing portion 50 has an opening / closing valve body 52, a first operation portion 16, and an opening / closing operation shaft 53. The first operation portion 16 rotatably operates the opening / closing valve body 52. The opening / closing operation shaft 53 connects the opening / closing valve body 52 and the first operation portion 16. The pressure relief portion 60 is formed on the opening / closing operation shaft 53. According to this configuration, the main body portion 10 can be made compact.

[0056] <Embodiment 2> Next, a faucet device M according to Embodiment 2 embodying the present disclosure will be described with reference to FIGS. 7 to 9. The faucet device M of the present embodiment is different from Embodiment 1 in that the mixing portion 87 is a moving member. Note that the same reference numerals are given to the same configurations as those in Embodiment 1, and redundant descriptions are omitted.

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

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

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

[0060] The second end member 26 has a first surface 83 orthogonal to the axis L. The second fixing member 27 has a second surface 84 orthogonal to the axis L. "Orthogonal" includes a state of being generally orthogonal in addition to a strictly orthogonal state. The elastic body 81 expands and contracts in a direction parallel to the axis L between the first surface 83 and the second surface 84.

[0061] The relief portion sealing member 85 is one of the plurality of mixing portion sealing members 28. The relief portion sealing member 85 is disposed between the outer peripheral surface of the mixing case 41 and the inner peripheral surface of the inner tube 24. The relief portion sealing member 85 is mounted in a sealing groove 86 formed on the outer peripheral surface of the mixing case 41.

[0062] The non-sealing surface 82 is formed on the inner peripheral surface of the inner tube 24. The non-sealing surface 82 is provided on the left side of the relief portion sealing member 85. The non-sealing surface 82 is inclined with respect to the axis L. The non-sealing surface 82 gradually separates from the outer peripheral surface of the mixing case 41 from the right side to the left side.

[0063] When the water pressure in the water passage 19 on the primary side of the opening / closing part 50 is lower than a predetermined value, the pressure relief part 80 closes the water passage 19 on the primary side of the opening / closing part 50 as shown in FIG. 7. In the closed state of the pressure relief part 80, the seal member 85 for the relief part is in close contact with the inner peripheral surface of the inner pipe 24. When the water pressure in the water passage 19 on the primary side of the opening / closing part 50 becomes higher than the predetermined value, the leftward force applied to the mixing part 87 increases, and the mixing part 87 moves to the left while compressing the elastic body 81. The seal member 85 for the relief part moves to the left together with the mixing part 87 and is disposed at the position of the non-sealing surface 82 as shown in FIG. 9. Thereby, the pressure relief part 80 opens the water passage 19 on the primary side of the opening / closing part 50. Due to the gap between the seal member 85 for the relief part and the non-sealing surface 82, the water pressure in the water passage 19 on the primary side of the opening / closing part 50 is released into the gap between the inner pipe 24 and the mixing case 41 and becomes lower. 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 water passage 19 on the primary side of the opening / closing part 50 is lowered by the pressure relief part 80, the mixing part 87 is pushed to the right by the elastic force of the elastic body 81 and moves to the right. Thereby, the pressure relief part 80 returns to the closed state. The seal member 85 for the relief part comes into close contact with the inner peripheral surface of the inner pipe 24, and the water passage 19 on the primary side of the opening / closing part 50 is sealed.

[0065] As described above, in the present embodiment, similar to the first embodiment, since the pressure relief part 80 releases the water pressure into the internal space S of the main body part 10, it does not affect the appearance of the main body part 10. Since the internal space S of the main body part 10 communicates with the outside of the main body part 10, the excessive water pressure in the water passage 19 on the primary side of the opening / closing part 50 is released to the outside of the main body part 10. Therefore, the excessive water pressure can be released to the outside without affecting the appearance of the faucet device M.

[0066] When the water pressure in the water passage 19 on the primary side of the opening / closing part 50 reaches or exceeds a predetermined value, the pressure relief part 80 has a mixing part 87 that moves in the axial direction of the main body part 10. The mixing part 87 moves toward the second opening 22. The pressure relief part 80 relieves the water pressure by the movement of the mixing part 87. According to this configuration, since the mixing part 87 moves in the axial direction of the space 10S of the main body part 10, the main body part 10 can be made compact as in the first embodiment.

[0067] <Embodiment 3> Next, the faucet device M according to Embodiment 3 embodying the present disclosure will be described with reference to FIGS. 10 and 11. The pressure relief part 90 of the faucet device M in this embodiment is different from that in Embodiment 2 in that the seal member 95 for the relief part is used as a moving member. In addition, the same components as those in Embodiment 2 are denoted by the same reference numerals, and redundant descriptions are omitted.

[0068] Similar to the first embodiment, the faucet device M includes a main body part 10, a water discharge pipe 12, a shower elbow 13, a first crank leg 14, a second crank leg 15, a first operation part 16, and a second operation part 17. Similar to the first embodiment, the main body part 10 has a double structure including an outer pipe 23 and an inner pipe 24. Inside the main body part 10, a mixing part 40 and an opening / closing part 50 are arranged as in the first embodiment.

[0069] The pressure relief part 90 includes a seal member 95 for the relief part, an elastic body 81, an annular body 91, and a non-sealing surface 82. The seal member 95 for the relief part is one of the plurality of seal members 28 for the mixing part, similar to the second embodiment. The movement of the seal member 95 for the relief part to the right is restricted by a stopper surface 92 formed on the mixing case 41. The stopper surface 92 is orthogonal to the axis L.

[0070] Similar to the second embodiment, the elastic body 81 is a wave spring.

[0071] The annular body 91 is attached to the outer peripheral surface of the mixing case 41. The annular body 91 is arranged on the left side of the seal member 95 for the relief part. The annular body 91 moves in the left-right direction together with the seal member 95 for the relief part.

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

[0073] The non-sealing surface 82 is formed on the inner peripheral surface of the inner tube 24 as in Embodiment 2.

[0074] When the water pressure in the water passage 19 on the primary side of the opening / closing part 50 is lower than a predetermined value, the pressure relief part 90 closes the water passage 19 on the primary side of the opening / closing part 50 as shown in FIG. 10. In the closed state of the pressure relief part 90, the seal member 95 for the relief part is in close contact with the inner peripheral surface of the inner tube 24. When the water pressure in the water passage 19 on the primary side of the opening / closing part 50 becomes higher than the predetermined value, the leftward force applied to the seal member 95 for the relief part increases, and the seal member 95 for the relief part pushes the annular body 91 to the left. The seal member 95 for the relief part moves to the left while contracting the elastic body 81 together with the annular body 91, and is disposed at the position of the non-sealing surface 82 as shown in FIG. 11. Thereby, the pressure relief part 90 opens the water passage 19 on the primary side of the opening / closing part 50. Similar to Embodiment 2, due to the gap between the seal member 95 for the relief part and the non-sealing surface 82, the water pressure in the water passage 19 on the primary side of the opening / closing part 50 is released into the gap between the inner tube 24 and the mixing case 41 and becomes lower.

[0075] When the water pressure in the water passage 19 on the primary side of the opening / closing part 50 is lowered by the pressure relief part 90, the annular body 91 is pushed to the right by the elastic force of the elastic body 81 and moves to the right together with the seal member 95 for the relief part. Thereby, the pressure relief part 90 returns to the closed state. The seal member 95 for the relief part is in close contact with the inner peripheral surface of the inner tube 24, and the water passage 19 on the primary side of the opening / closing part 50 is sealed.

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

[0077] The pressure relief portion 90 has a seal member 95 for the relief portion that moves in the axial direction of the main body portion 10 when the water pressure in the water passage 19 on the primary side of the opening / closing portion 50 becomes equal to or higher than a predetermined value. The seal member 95 for the relief portion moves toward the second opening 22. The pressure relief portion 90 releases the water pressure by the movement of the seal member 95 for the relief portion. According to this configuration, since the seal member 95 for the relief portion moves in the axial direction of the space 10S of the main body portion 10, similar to Embodiment 2, the main body portion 10 can be made compact.

[0078] <Other Embodiments> The present disclosure is not limited to the embodiments described by the above description and drawings. For example, the following embodiments are also included in the technical scope of the present disclosure. (1) In the above embodiment, the first operation portion 16 and the second operation portion 17 are rotated. However, the present disclosure is not limited to this, and the first operation portion and the second operation portion may be pushed. (2) In the above embodiment, the faucet device M can select either the water discharge from the water discharge pipe 12 or the water discharge of the shower. However, the present disclosure is not limited to this, and the faucet device may perform only the water discharge from the water discharge pipe or only the water discharge of the shower. (3) In the above embodiment, the main body portion 10 is exposed to the outside. However, the present disclosure is not limited to this, and a cover member may be covered on the main body portion. (4) In the above Embodiments 2 and 3, the elastic body 81 is a wave spring. However, the present disclosure is not limited to this, and a coil spring, a disc spring, etc. may be used as the elastic body, or a C-ring-shaped wave spring may be used. (5) In the above embodiment, the main body 10 has a double structure including an outer pipe 23 and an inner pipe 24. However, it is not limited thereto, and the main body may be composed of a single pipe body. (6) In the above embodiment, the faucet device M is a mixing faucet attached to a wall surface in a bathroom or the like. However, it is not limited thereto, and the faucet device may be attached to, for example, a kitchen or a washbasin vanity. (7) In the above embodiment, the pressure relief portion 60 relieves the water pressure in the water passage 19 to the internal space S of the main body 10. However, it is not limited thereto, and the pressure relief portion may directly relieve the water pressure to the external space of the main body. (8) In the above embodiment, the outer shape of the main body 10 is illustrated. However, it is not limited thereto, and as long as a long space is formed inside the main body, the outer shape of the main body may be any shape. The outer shape of the main body may be, for example, a flat rectangular shape.

Description of Reference Numerals

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

Claims

1. A main body portion having a water passage inside; A mixing portion disposed inside the main body portion for mixing hot and cold water flowing into the water passage; An opening / closing portion disposed inside the main body portion for opening and closing the water passage on the downstream side of the mixing portion; A pressure relief portion disposed inside the main body portion for relieving the water pressure when the water pressure in the water passage reaches a predetermined value or more, comprising: The pressure relief portion relieves the water pressure into the internal space of the main body portion; The internal space communicates with the outside of the main body portion. A faucet device.

2. A main body portion having a water passage inside; A mixing portion disposed inside the main body portion for mixing hot and cold water flowing into the water passage; An opening / closing portion disposed inside the main body portion for opening and closing the water passage on the downstream side of the mixing portion; A pressure relief portion disposed inside the main body portion for relieving the water pressure when the water pressure in the water passage reaches a predetermined value or more, comprising: A long space is formed inside the main body portion in the axial direction; The mixing portion, the opening / closing portion, and the pressure relief portion are disposed on the axis of the long space of the main body portion. A faucet device.

3. The pressure relief portion is disposed on the downstream side of the mixing portion. The faucet device according to any one of Claims 1 to 2.

4. A long space is formed inside the main body portion in the axial direction; The pressure relief portion has a moving member that moves in the axial direction of the long space when the water pressure in the water passage reaches a predetermined value or more, and relieves the water pressure by the movement of the moving member. The faucet device according to any one of Claims 1 to 3.

5. A long space is formed inside the main body portion in the axial direction, and an opening is formed at one end side of the main body portion in the axial direction; The pressure relief portion has a moving member that moves toward the opening when the water pressure in the water passage reaches a predetermined value or more, and relieves the water pressure by the movement of the moving member. The faucet device according to any one of Claims 1 to 3.

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

7. The opening / closing portion has a cylinder valve body, an operation portion for rotatably operating the cylinder valve body, and a rotary operation shaft for connecting the cylinder valve body and the operation portion; The pressure relief portion is formed on the rotary operation shaft. The faucet device according to any one of Claims 1 to 6.

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