JP2014181773A - Faucet device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a faucet device having a double pipe including a small diameter pipe inside a large diameter pipe and capable of water draining the inside of the large diameter pipe and the inside of the small diameter pipe through a water drain faucet.SOLUTION: This invention relates to a faucet device comprising a double pipe having a small diameter pipe inside a large diameter pipe; a water discharge part for discharging water supplied from a water supply source through either a large diameter pipe or a small diameter pipe; and a water drain faucet capable of water draining of the double pipe. The double pipe is provided with the first water drain hole communicating inside of the large diameter pipe with the outside of the large diameter pipe and the second water drain hole for communicating the inside of the small diameter pipe with the inside of the large diameter pipe. The water drain faucet comprises: a water drain main body operated to perform water drain; the first valve body arranged at the water drain main body that can be moved to or away from the first valve seat arranged at the first water drain hole; and the second valve body arranged at the water drain main body that can be moved to or away from the second valve seat arranged at the second water drain hole. The first valve body and the second valve body release or close the first water drain hole and the second water drain hole as the water faucet main body is moved.

Description

  The present invention relates to a faucet device that performs water discharge.

  Conventionally, as a faucet device that performs spout water, a switching unit that switches the flow path of raw water supplied to the tip of the spout, a water treatment unit that performs raw water treatment on the upstream side of the spout, and a switch to this water treatment unit A large-diameter pipe and a small-diameter arranged concentrically for supplying raw water from the switching unit to the water treatment unit and returning treated water treated by the water treatment unit to the switching unit. The thing provided with the double pipe which consists of a pipe | tube is known (for example, refer patent document 1). In this type of faucet device, the switching unit is provided with a switching lever that switches the flow path of the raw water, and by operating this switching lever, the flow path that discharges the raw water as it is, and the raw water is discharged in the form of a shower. Three types of water discharge can be performed by switching to either the flow path or the flow path for supplying raw water from the switching unit to the water treatment unit.

JP 2007-154961 A

  By the way, a faucet device used in a place where there is a risk of freezing such as in a cold region usually includes a water faucet capable of draining water in the faucet device. In the faucet device provided with the double pipe as described above, it is necessary to provide a water faucet for draining water from the small diameter pipe and the large diameter pipe in order to use in a place where there is a risk of freezing such as a cold district. There is. When the water drain plug is not provided, there is a possibility that the small-diameter pipe and the large-diameter pipe are damaged by freezing of the water in the small-diameter pipe and the large-diameter pipe.

  The present invention has been made in order to solve the above-described problem, and in a faucet device including a double pipe having a small diameter pipe inside a large diameter pipe, the water is drained from the large diameter pipe and the small diameter pipe by the water drain plug. It is an object of the present invention to provide a water faucet device capable of performing the above.

  The present invention includes a double pipe having a small diameter pipe inside a large diameter pipe, a water discharge section for discharging water supplied from a water supply source through the large diameter pipe or the small diameter pipe, and water in the double pipe A water faucet device comprising a water faucet that can be drained, wherein the double pipe is provided with a first water drain hole for communicating the inside of the large diameter pipe and the outside of the large diameter pipe, and the inside of the small diameter pipe And a second drain hole that communicates with the inside of the large-diameter pipe, the drain plug is a drain plug body that is operated to drain water, and a first valve seat that is provided in the first drain hole. A first valve body arranged in the water drain main body so as to be separable, and a second valve body arranged in the water drain main body so as to be separable from a second valve seat provided in the second water drain hole; The first valve body and the second valve body open the first water drain hole and the second water drain hole as the water drain plug body moves. The other is a water faucet device for closing.

  In the present invention configured as above, the water in the small-diameter pipe is discharged to the large-diameter pipe along with the movement of the water-plugging main body, and is discharged to the outside of the water plug with the water in the large-diameter pipe as it is. Water can be drained at the same time.

  The present invention further has a configuration in which a distance between the first valve seat and the second valve seat is held so as to be equal to a distance between the first valve body and the second valve body. Also good.

  In the present invention configured as described above, the distance between the first valve seat and the second valve seat is maintained to be equal to the distance between the first valve body and the second valve body, The first drain hole and the second drain hole can be simultaneously opened or closed by movement in one axial direction of the drain plug body.

  The present invention further includes a biasing member that biases the water drainage main body in a direction in which the first valve body and the second valve body hold the first drainage hole and the second drainage hole closed. It is good.

  In the present invention configured as described above, the urging member can prevent water leakage from the drain plug during normal use of the water discharging device.

  The present invention further includes an outer case that covers the protruding portion of the water draining plug body that protrudes to the outside of the large-diameter tube, and the outer case opens the first drain hole and the second drain hole. It is good also as a structure which has an opening part used as a drain outlet.

  In the present invention configured as described above, since the drained water is collected at the drain port provided in the exterior case and drained as it is, handling of the drainage at the time of draining becomes easy.

  The present invention may further be configured such that a tapered shape that reduces the diameter toward the first drain hole is provided in a region adjacent to the first drain hole of the large-diameter pipe.

  In this invention comprised in this way, it becomes easy for the water in piping to flow into a 1st drain hole by taper shape, and it can drain with less water remaining in piping.

  The present invention may further be configured such that a tapered shape that reduces the diameter toward the second drain hole is provided in a region adjacent to the second drain hole of the small-diameter pipe.

  In this invention comprised in this way, it becomes easy for the water in piping to flow into a 2nd drain hole by taper shape, and it can drain with less water remaining in piping.

  According to the water faucet device of the present invention, water can be drained from the large diameter pipe and the small diameter pipe by the water drain plug.

1 is an external perspective view showing a water faucet device according to an embodiment of the present invention. The side view showing the faucet device by one embodiment of the present invention. Sectional drawing which shows the flow-path formation member of the faucet device by one Embodiment of this invention. The top view which shows schematically the flow-path formation member of the water faucet device by one Embodiment of this invention, the fixed valve body above it, and the movable valve body above it. The partial expanded sectional view which expanded the connection part of the hose member and steel pipe member of the faucet device by one embodiment of the present invention. (A) The partial expanded sectional view which shows the normal state of the water tap of the water faucet device by one Embodiment of this invention. (B) The partial expanded sectional view which shows the draining state of the drain plug of the faucet device by one Embodiment of this invention. The plane sectional view showing the discharging head part of the faucet device by one embodiment of the present invention. (A) The figure which demonstrated schematically the water discharging operation | movement of the raw water straight water discharging mode in the water discharging head part of the faucet device by one Embodiment of this invention. (B) The figure explaining roughly the water discharging operation | movement of the raw | natural water shower water discharging mode in the water discharging head part of the faucet device by one Embodiment of this invention. (C) The figure which demonstrated schematically the water discharging operation | movement of the purified water straight water discharging mode in the water discharging head part of the faucet device by one Embodiment of this invention. (A) The partial expanded sectional view which shows the normal state of the water tap of the water faucet device by the modification of one Embodiment of this invention. (B) The elements on larger scale which show the draining state of the drain plug of the faucet device by the modification of one Embodiment of this invention.

  Hereinafter, a faucet device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view showing a faucet device according to an embodiment of the present invention, and FIG. 2 is a side view showing the faucet device according to an embodiment of the present invention.

  As shown in FIGS. 1 and 2, the faucet device 1 according to one embodiment of the present invention supplies hot water adjusted in flow rate and temperature by operating one operation handle 6 at the water discharge portion 8 a of the water discharge head portion 8. A so-called single lever type mixed faucet body 10 having a water purifying function capable of discharging water and allowing water to be discharged at the water discharging portion 8a by operating the operation handle 6 is provided. The faucet device 1 includes a hot water supply pipe 2 that guides heated hot water (raw water) supplied from a water supply source (not shown) to the mixed water faucet device body 10 and a mixed water faucet device body 10 from the water supply source (not shown). And a water supply pipe 4 for supplying water (raw water).

  The mixing faucet body 10 is disposed on a counter 12 such as a kitchen sink or a wash basin, and when the operation handle 6 is rotated upward (in the direction of the arrow “open” shown in FIG. 1). Can be switched from water stop to water discharge in the water discharge portion 8a of the water discharge head portion 8. The flow rate of the hot water discharged from the water discharge part 8a of the water discharge head part 8 can be set larger as the operation handle 6 is set to a position rotated further upward.

  On the other hand, when the operation handle 6 is rotated to the lowest position (the direction of the arrow “closed” shown in FIG. 1), the hot water discharged from the water discharge portion 8 a of the water discharge head portion 8 is stopped. It can be set to the state.

  Further, when the operation handle 6 is rotated from the front side in the horizontal direction (rightward in the horizontal direction in FIG. 1) of the arrow “C” in FIG. 1 about the vertical center axis A1 of the mixing faucet body 10. Can be set to a mode in which water is discharged from raw water from the water discharge portion 8a of the water discharge head portion 8 (hereinafter referred to as “water discharge mode”). Further, when the operation handle 6 is further rotated in the horizontal direction (right side in the horizontal direction in FIG. 1) of the arrow “C” about the central axis A1 from the state of the water discharge mode, It can be set to a mode in which purified water is discharged from the water discharge portion 8a of the head portion 8 (hereinafter referred to as “purified water discharge mode”).

  On the other hand, when the operation handle 6 is turned from the front side in the horizontal direction (left side in FIG. 1) of the arrow “H” in FIG. 1 around the central axis A1 in the vertical direction of the mixing faucet body 10. Can be set to a mode in which hot water is discharged from the water discharge portion 8a of the water discharge head portion 8 (hereinafter referred to as “hot water discharge mode”). Further, when the operation handle 6 is rotated to a position between the position in the water discharge mode and the position in the hot water discharge mode, a mode in which hot water and water from the raw water are mixed and discharged (hereinafter referred to as “hot water”). The mixed water discharge mode ") can be set.

  Next, as shown in FIG. 2, the water discharge head portion 8 is detachably attached to a water discharge head attachment portion 14 that protrudes forward and obliquely upward from the front surface of the mixing faucet body 10. The user grasps the water discharge head portion 8 and removes it from the water discharge head mounting portion 14 of the mixing faucet main body 10 so that the user can use it while being pulled forward (in the direction of arrow A in FIG. 2). It has become.

  In addition, at the front end portion of the water discharge head unit 8, a water discharge mode (hereinafter “shower water discharge mode”) for performing shower-like water discharge in the water discharge unit 8 a or a water discharge mode (hereinafter “straight water discharge mode”) for performing straight water discharge. A changeover switch 8b for switching is provided.

  Further, as shown in FIGS. 1 and 2, a hose member 16 is connected to the rear end portion (upstream side) of the water discharge head portion 8, and the upstream side of the hose member 16 is built in the mixing faucet body 10. The steel pipe member 18 connected to the flow path forming member 30 and the connecting member 20 are connected. The hose member 16, the steel pipe member 18, and the connecting member 20 function as a double pipe having a small diameter pipe inside a large diameter pipe. Further, the mixing faucet device main body 10 has a valve cartridge 28 (flow channel switching unit) that selects and switches as a flow channel through which a predetermined flow channel passes through a plurality of flow channels in the mixed faucet device main body 10. Is built-in.

  Further, the connecting member 20 is provided with a mixed faucet device main body 10, a steel pipe member 18, and a water faucet 120 that can drain water from the connecting member 20.

  Next, the valve cartridge and the flow path forming member will be described with reference to FIGS. FIG. 3 is a cross-sectional view of a flow path forming member of a faucet device according to an embodiment of the present invention, and FIG. 4 is a flow path forming member of a faucet device according to an embodiment of the present invention, a fixed valve body above the same. It is a top view which shows an upper movable valve body roughly. In FIG. 3, each of the hot water flow and the water flow on the primary side, and the non-purified raw water flow F1 and the purified raw water flow F2 on the secondary side are indicated by arrows.

  As shown in FIG. 3, the flow path forming member 30 built in the mixing faucet body 10 includes a primary hot water flow path 30a, a primary side water flow path 30b, a secondary raw water side flow path 30c extending in the vertical direction, and Four channels of secondary side purified water side channel 30d are formed, respectively.

  As shown in FIG. 4, the valve cartridge 28 provided on the upper side of the flow path forming member 30 in the mixing faucet device main body 10 is provided on the fixed valve body 22 and slidably provided on the fixed valve body 22. It has a movable valve body 24 and an operation unit (not shown) that is connected to the movable valve body 24 and operates the movable valve body 24.

  The fixed valve body 22 is formed with four flow paths, namely, a primary hot water flow path 22a, a primary water flow path 22b, a secondary raw water flow path 22c, and a secondary clean water flow path 22d that extend in the vertical direction. Yes. On the other hand, the movable valve body 24 has a primary flow path 24a into which water discharged from the fixed valve body 22 side (upstream side of the movable valve body 24) flows, and water discharged from the primary side flow path 24a to the fixed valve body 22. And a secondary flow path 24b that discharges to the side (downstream of the movable valve body 24).

  As shown in FIGS. 3 and 4, the primary hot water flow path 30 a of the flow path forming member 30 has an upper end portion (downstream end portion) of the primary hot water flow path 22 a of the fixed valve body 22 of the valve cartridge 28. The lower end side (upstream side) is connected in communication. On the other hand, the upper end portion (downstream end portion) of the hot water supply pipe 2 is inserted into and connected to the lower end portion (upstream end portion) of the primary-side hot water flow passage 30a of the flow path forming member 30. Similarly, the primary side water flow path 30b of the flow path forming member 30 is connected to the lower end side (upstream side) of the primary side water flow path 22b of the fixed valve body 22 of the valve cartridge 28 at its upper end (downstream end). ing. On the other hand, the upper end portion (downstream end portion) of the water supply pipe 4 is inserted and connected to the lower end portion (upstream end portion) of the primary side water flow passage 30b of the flow passage forming member 30.

  Further, the upper end portions (upstream end portions) of the secondary side raw water side flow channel 30 c and the secondary side purified water side flow channel 30 d of the flow path forming member 30 are the secondary side raw water side flow channels 22 c of the fixed valve body 22. And the lower end side (downstream side) of each of the secondary side purified water flow path 22d is connected in communication.

  Further, as shown in FIG. 3, the steel pipe member 18 is connected to the secondary raw water side flow path 30 c of the flow path forming member 30 from the lower side. This steel pipe member 18 is a double pipe comprising an elongated substantially circular tubular outer steel pipe member 36 (large diameter pipe) and an inner steel pipe member 38 (small diameter pipe) arranged concentrically inside the outer steel pipe member 36. It is a member. Further, the upper end portion (upstream end portion) of the inner steel pipe member 38 is an inner steel pipe member connection portion 40 that is a downstream end portion of the secondary-side raw water-side flow passage 30c located a predetermined distance above the bottom surface of the flow passage forming member 30. Are connected in a liquid-tight manner through a seal member 42. Thereby, the inner peripheral side of the inner steel pipe member 38 forms a raw water side flow path 38a through which only non-purified raw water flowing from the secondary side raw water side flow path 30c flows.

  On the other hand, an outer steel pipe member connecting portion 44 is provided at a position immediately below the bottom surface of the flow path forming member 30 and the inner steel pipe member connecting portion 40 (downstream side of the inner steel pipe member connecting portion 40). The upper end (upstream end) is liquid-tightly connected via the seal member 46. Furthermore, on the upstream side of the outer steel pipe member connection portion 44 of the flow path forming member 30 and the downstream side of the inner steel pipe member connection portion 40, the lower end portion of the secondary water purification side flow passage 30d and the outer steel pipe member connection portion 44 are provided. A connection channel 48 extending in a substantially horizontal direction is formed so as to connect the two.

  In addition, the secondary raw water side flow path 30c and the secondary side purified water side flow path 30d of the flow path forming member 30 located on the upstream side of the outer steel pipe member connection portion 44 are such that the central axes of the cross sections of the flow paths are mutually Since it is eccentric, the raw water for water purification in the secondary-side water purification-side channel 30d is formed between the outer peripheral surface of the inner steel pipe member 38 and the inner peripheral surface of the outer steel pipe member 36 via the connection channel 48. It flows through the purified water side flow path 36a (see FIG. 4). That is, the raw water side flow path 38a on the inner peripheral side of the inner steel pipe member 38 and the purified water flow path 36a formed between the outer peripheral surface of the inner steel pipe member 38 and the inner peripheral surface of the outer steel pipe member 36 are mutually connected. Since the independent flow path is formed, the raw water for non-purifying water and the raw water for water purification flowing through each flow without being mixed with each other.

  With such a configuration, when the operation portion (not shown) of the valve cartridge 28 is operated by operating the operation handle 6, the movable valve body 24 slides or rotates along the upper surface of the fixed valve body 22, The communication state between the flow path of the flow path forming member 30 and the flow path of the movable valve body 24 and the flow path of the fixed valve body 22 can be switched. Thereby, it can select and switch as a flow path which lets a predetermined flow path pass through among a plurality of flow paths in mixing faucet device main part 10, and the water discharge mode in water discharge part 8a of water discharge head part 8 is mentioned above. It is possible to switch to any one of the water discharge mode, the hot water mixed water discharge mode, the hot water discharge mode, or the purified water discharge mode.

  Next, with reference to FIG. 5, the detail of the connection part of a hose member and a steel pipe member is demonstrated. FIG. 5 is a partially enlarged cross-sectional view in which a connecting portion between a hose member and a steel pipe member of the faucet device according to the embodiment of the present invention is enlarged. In addition, in FIG. 5, the flow F1 of the non-purified raw water F1 and the flow F2 of the purified water are respectively indicated by arrows. As shown in FIG. 5, a connecting member 20 composed of a plurality of parts is connected to the lower side (downstream side) of the steel pipe member 18, and a hose member is connected to the lower side (downstream side) of the connecting member 20. 16 are connected.

  The connecting member 20 has a one-touch socket 56 (large diameter pipe), a relay pipe 58 (large diameter pipe), and a coupler 60 (small diameter) built in the relay pipe 58 from the upper side to the lower side in FIG. Tube) and a tubular inner hose joint 62 (small-diameter tube). Further, the connecting member 20 is provided with a water drain plug 120.

  The one-touch socket 56 is a connecting member for detachably connecting the outer steel pipe member 36 and the inner steel pipe member 38 and the relay pipe 58 by a built-in compression coil spring (not shown). In a state where the outer steel pipe member 36 and the inner steel pipe member 38 and the relay pipe 58 are connected via the one-touch socket 56, a gap between the outer peripheral surface of the inner steel pipe member 38 extending in the relay pipe 58 and the inner peripheral surface of the relay pipe 58. The purified water raw water flow path 58a is formed in the water purification raw water flow path 58a, and the purified water raw water flow path 58a communicates with the purified water raw water flow path 36a inside the outer steel pipe member 36 thereabove.

  The coupler 60 built in the relay pipe 58 is a connection member for connecting the lower end portion of the inner steel pipe member 38 and the upper end portion of the inner hose joint 62 below the inner steel pipe member 38. In a state where the lower end portion of the inner steel pipe member 38 and the upper end portion of the inner hose joint 62 are connected by the coupler 60, the flow path formed on the inner peripheral side of the coupler 60 is not in the inner steel pipe member 38 above it. The non-purified raw water flow path 60a communicated with the raw water flow path 38a for water purification, and the flow path formed on the inner peripheral side of the inner hose joint 62 is the raw water for non-clean water of the coupler 60 thereabove. A non-purified raw water flow path 62a communicates with the water flow path 60a. Further, between the outer peripheral surface of the coupler 60 and the inner peripheral surface of the relay pipe 58 opposed to the coupler 60, a purified water raw water channel 58a communicating with the purified water raw water channel 36a inside the outer steel pipe member 36 is provided. Is formed.

  The relay pipe 58 is a connection member for connecting the inner hose joint 62 and the hose member 16 at the lower end thereof. Specifically, the hose member 16 includes an inner hose 72 (small-diameter pipe), an outer hose 74 (large-diameter pipe), and a flexible tube 76 that are arranged substantially concentrically from the inside toward the outside.

  Further, the outer peripheral surface of the relay pipe 58 is provided with a convex portion 58b protruding from the outer peripheral surface in a direction perpendicular to the central axis of the relay pipe 58, and the convex portion 58b is used for water purification of the relay pipe 58. A first water drain hole 58c is provided for communicating the raw water flow path 58a with the outside of the relay pipe 58. On the other hand, a concave portion 60b that is recessed from the outer peripheral surface in a direction perpendicular to the central axis of the coupler 60 is provided on the outer peripheral surface of the coupler 60. The non-purified raw water flow path 60a of the coupler 60 is provided in the concave portion 60b. And a first water drain hole 58b that communicates the purified water source flow path 58a of the relay pipe 58 with each other. The first drain hole 58c and the second drain hole 60c are formed concentrically, both are provided with a female screw, and are closed by a drain plug 120 described later in detail.

  The inner hose joint 62 extends in the vertical direction, and the lower end portion of the inner hose joint 62 is inserted and connected to the inner peripheral side of the inner hose 72 inside the outer hose 74. That is, a non-purified raw water flow path 72 a that communicates with the non-purified raw water flow path 62 a of the inner hose joint 62 is formed on the inner peripheral side of the inner hose 72. Further, between the outer peripheral surface of the inner hose joint 62 and the inner peripheral surface of the outer hose 74, a purified water raw water channel 74a communicating with the purified water raw water channel 58a in the relay pipe 58 is formed.

  Here, the inner hose 72 is an elastic material that can be elastically deformed by the water pressure in the non-purified raw water flow path 72a on the inner peripheral side or the water pressure in the raw water flow path 74a on the outer peripheral side, such as vinyl chloride. , Silicone and fluoro rubber. Further, the outer peripheral surface of the outer hose 74 is covered with a reinforcing layer, and even if a large water pressure is applied in the non-purified raw water flow path 72 a or the purified water raw water flow path 74 a inside the outer hose 74, The cross section of the flow path in the hose 74 can be prevented from expanding beyond the radial direction beyond a predetermined value, and damage such as the outer hose 74 rupturing can be prevented. Furthermore, the flexible tube 76 is a metal flexible hose member made of a material such as stainless steel.

  Next, a water drain plug will be described with reference to FIG. FIG. 6A is a partially enlarged cross-sectional view showing a normal state of the water faucet of the faucet device according to the embodiment of the present invention, and FIG. 6B is a water faucet of the faucet device according to the embodiment of the present invention. It is a partial expanded sectional view which shows the water draining state. As shown in FIGS. 6A and 6B, the water drain plug 120 includes a substantially cylindrical water drain main body 122 and a first O-ring 124 (first valve body) provided on the water drain main body 122. And a second O-ring 126 (second valve body).

  The drain plug body 122 is stepped from one end side to the other end side (from left to right in FIG. 6) so that it can be inserted and screwed into the first drain hole 58b and the second drain hole 60b. While reducing the diameter, a male screw is provided on the outer periphery thereof. The step on the other end side of the water drain main body 122 is formed so as to coincide with the concave portion 60b of the coupler 60, whereby the insertion position of the water drain main body 122 can be easily determined. A first O-ring 124 and a second O-ring 126 are fitted on the outer periphery of the water drain main body 122. Further, when inserted into the first drain hole 58b and the second drain hole 60b and screwed, the outer surface of one end side (left end in FIG. 6) of the drain plug body 122 exposed to the outside of the relay pipe 58 is An insertion hole 122a for inserting a tool such as a screwdriver is formed.

  The first O-ring 124 is deformed between the faucet body 122 and the convex portion 58b when the drain cock body 122 is inserted and screwed into the first drain hole 58b and the second drain hole 60b. It arrange | positions at the drain plug main body 122 so that the 1st drain hole 58c may be closed. That is, the convex portion 58b functions as a first valve seat with which the first O-ring 124 is separated from and contacting. Similarly, the second O-ring 126 deforms between the water drain main body 122 and the recess 60b, and is disposed in the water drain main body 122 so as to close the second water drain hole 60c. That is, the recess 60b functions as a second valve seat with which the second O-ring 126 is separated from and contacting. In addition, when the water drain main body 122 is inserted into the connecting member 20, the diameter of the water drain main body 122 is reduced stepwise in the insertion direction, so that the first O-ring fitted to the outer periphery of the water drain main body 122. The positions of 124 and the second O-ring 126 are held at predetermined positions by the steps. For this reason, the distance between the portion where the first O-ring 124 of the convex portion 58 b comes in contact with and the portion where the second O-ring 126 of the concave portion 60 b comes into contact with and separates is the distance between the first O-ring 124 and the second O-ring 126. To be equal to the distance between the two.

  Next, the details of the internal structure of the water discharge head unit will be described with reference to FIG. FIG. 7 is a plan sectional view showing the water discharge head portion of the faucet device according to the embodiment of the present invention. In addition, in FIG. 7, the flow F1 of the raw water for non-purified water and the flow F2 of the raw water for purified water and the purified water are respectively indicated by arrows. In FIG. 7, the faucet device is set to the straight water discharge mode.

  As shown in FIG. 7, the water discharge head portion 8 includes a hose connection portion 80 to which the hose member 16 is connected. The water discharge head unit 8 includes an outer casing member 96, an inner casing member 98 provided inside the outer casing member 96, and a substantially cylindrical water purification cartridge 100 ( Water purification section).

  Between the outer peripheral surface of the inner casing member 98 and the inner peripheral surface of the outer casing member 96, there is a raw water side channel 102 communicating with the downstream side of the raw water side channel 72 a of the inner hose 72 via the hose connection portion 80. Is formed. On the other hand, between the inner peripheral surface of the inner casing member 98 and the outer peripheral surface of the water purification cartridge 100, the purified water side between the outer peripheral surface of the inner hose 72 and the inner peripheral surface of the outer hose 74 via the hose connection portion 80. A purified water flow path 104 communicating with the downstream side of the flow path 74 a is formed independently from the raw water flow path 102.

  The raw water for water purification in the purified water side flow path 104 is made purified by passing through the inside of the purified water cartridge 100, and then flows to the water discharger 8a side. In addition, the raw water for non-purified water in the raw water-side channel 102 does not pass through the water purification cartridge 100 and flows to the water discharger 8a side without being purified (raw water, hot water, or mixed hot water). ing.

  Further, as shown in FIG. 7, a straight water discharge channel 106 and a shower water discharge channel 108 are formed inside the water discharge unit 8 a of the water discharge head unit 8.

  When the straight water discharge mode is set by the changeover switch 8b, the straight water discharge water discharge channel 106 is supplied with non-purified raw water (water, hot water, or water) that flows through the non-purified raw water flow channel 102 in the water discharge head unit 8. Mixed hot water) or purified water that has passed through the purified water cartridge 100 flows from the purified water flow path 104 in the water discharge head unit 8 and is a flow path that discharges water straight in the downstream side. At this time, the shower water discharge channel 108 is closed by a switching valve (not shown) of the changeover switch 8b so that the water discharge does not flow in.

  On the other hand, when the shower water discharge mode is set by the changeover switch 8b, the shower water discharge water flow channel 108 is supplied with non-purified raw water (water, hot water) that flows through the non-purified raw water flow channel 102 in the water discharge head unit 8. , Or mixed hot water) flows in, and forms a flow path for discharging water in the form of a shower on the downstream side. At this time, the water discharge flow path 106 for straight water discharge is closed by the switching valve (not shown) of the changeover switch 8b so that the water discharge does not flow in.

  Further, the purified water flow path 110 formed downstream of the purified water cartridge 100 and through which the purified water that has passed through the purified water cartridge 100 flows, is connected to the straight water discharge flow path 106 for the water discharge section 8a regardless of the operation position of the changeover switch 8b. The structure is always in communication and does not always communicate with the shower water discharge channel 108. Thereby, even if the changeover switch 8b of the water discharge head 8 is set to the shower water discharge mode with the operation handle 6 set to the water discharge mode, the shower-type water discharge is not performed and only the straight water discharge is performed. It has come to be.

  Next, with reference to FIGS. 1-8, operation | movement of the water tap apparatus 1 by one Embodiment of this invention mentioned above is demonstrated. FIG. 8A is a diagram schematically illustrating the water discharging operation in the raw water straight water discharging mode in the water discharging head portion of the water faucet device according to the embodiment of the present invention, and FIG. 8B is the water faucet device according to the embodiment of the present invention. The figure explaining roughly the water discharging operation | movement of the raw water shower water discharging mode in the water discharging head part of this, (c) The water discharging operation | movement of the clean water straight water discharging mode in the water discharging head part of the faucet device by one Embodiment of this invention is demonstrated roughly. FIG.

  First, as shown in FIG. 8 (a), the raw water straight water discharge mode is a state in which the changeover switch 8b of the water discharge head unit 8 is set to the straight water discharge mode, and the operation handle 6 is operated in the water discharge mode. It means the water discharge mode when set to either the operation position of the mode or the operation position of the hot water / mixed water discharge mode.

  When the raw water straight water discharge mode is set, as shown in FIGS. 3 and 4, when the operation handle 6 is set to the water discharge mode, the raw water (water) for non-purified water supplied from the water supply pipe 4 is used. ) Passes from the primary side water flow path 30b of the flow path forming member 30 to the primary side water flow path 22b of the fixed valve body 22, and from the primary side flow path 24a and the secondary side flow path 24b of the movable valve body 24 to the fixed valve body. It passes through the secondary side raw water side flow path 30c of the flow path forming member 30 through the secondary side raw water side flow path 22c. The raw water (water) for non-purifying water is, as shown in FIGS. 3, 5, and 7, the raw water in the inner water hose 72 and the raw water side flow path 38 a in the inner steel pipe member 38 toward the downstream side. The side flow path 72 a flows through the raw water side flow path 102 in the water discharge head unit 8. A switching valve (not shown) of the changeover switch 8b of the water discharge head unit 8 opens the straight water discharge flow passage 106 and closes the shower water discharge flow passage 108, so that the raw water (water) is straight water discharge. It flows through the water discharge flow path 106 and is finally discharged straight from the straight water discharge port 112 of the water discharge part 8a.

  Similarly, when the operation handle 6 is set to the hot water discharge mode or the hot water mixed water discharge mode, the upstream side of the secondary side raw water side flow channel 30c of the flow path forming member 30 enters the secondary side raw water side flow channel 30c. As shown in FIGS. 3, 5, and 7, the inflowing raw water (hot water or mixed hot water) flows into the raw water side flow path 38 a and the inner hose 72 in the inner steel pipe member 38 toward the downstream side. The raw water side flow path 72a passes through the straight water discharge flow path 106 from the raw water side flow path 102 in the water discharge head section 8, and finally, the raw water (hot water or mixed hot water) flows into the straight water discharge port of the water discharge section 8a. 112 is discharged straight.

  Next, as shown in FIG. 8 (b), the raw water shower water discharge mode is a state where the changeover switch 8b of the water discharge head unit 8 is set to the shower water discharge mode, and the operation handle 6 is moved to the operation position of the water discharge water mode, hot water. It means the water discharge mode when set to either the operation position in the water discharge mode or the operation position in the hot water mixed water discharge mode.

  When this raw water shower discharge mode is set, the raw water for non-purified water (water, water) that has flowed into the secondary raw water side flow path 30c from the upstream side of the secondary raw water side flow path 30c of the flow path forming member 30. As shown in FIGS. 3, 5, and 7, the hot water or mixed hot water passes through the raw water side flow path 38 a in the inner steel pipe member 38 and the raw water side flow path 72 a in the inner hose 72 toward the downstream side. About the point which flows through the raw | natural water side flow path 102 in the water discharge head part 8, although it is common in the case of the raw water straight water discharge mode mentioned above, the change-over valve (not shown) of the changeover switch 8b of the water discharge head part 8 is for straight water discharge. The water discharge channel 106 is closed and the shower water discharge channel 108 is opened. As a result, the raw water (water, hot water or mixed hot water) flows through the shower water discharge channel 108 and is finally discharged from the shower water outlet 114 of the water discharge part 8a.

  Next, as shown in FIG. 8 (c), the water purification straight water discharge mode is a state in which the operation handle 6 is purified with the changeover switch 8b of the water discharge head unit 8 set to either the straight water discharge mode or the shower water discharge mode. It means the water discharge mode when set to the operation position of the water discharge mode.

  In the case where the water purification straight water discharge mode is set, as shown in FIGS. 3 and 4, when the operation handle 6 is set to the water purification water discharge mode, the raw water for non-clean water supplied from the water supply pipe 4 (to be purified). The previous raw water) passes from the primary side water flow path 30b of the flow path forming member 30 to the primary side water flow path 22b of the fixed valve body 22, and from the primary side flow path 24a and the secondary side flow path 24b of the movable valve body 24. It passes through the secondary side purified water side channel 30 d and the connection channel 48 of the channel forming member 30 through the secondary side purified water side channel 22 d of the fixed valve body 22.

And as shown in FIG.3, FIG5 and FIG.7, this raw water for water purification (raw water before water purification) faces the downstream side, and the purified water side flow path 36a of the outer peripheral side of the inner side steel pipe member 38 is shown in FIG. The water is purified by passing through the water purification cartridge 100 in the inner casing member 98 of the water discharge head portion 8 through the water purification side flow path 74a on the outer peripheral side of the inner hose 72. Further, the purified water flows into the straight water discharge flow passage 106 and is finally discharged straight from the straight water discharge port 112 of the water discharge portion 8a.
In addition, when set to the purified water straight water discharge mode, since the water purification side flow path 104 is always connected with the straight water discharge water flow path 106 of the water discharge part 8a irrespective of the operation position of the changeover switch 8b, water discharge Even if the changeover switch 8b of the head unit 8 is set to the shower water discharge mode, the shower-like water discharge is not performed, and only the straight water discharge is performed.

Next, the operation of the water drain plug will be described with reference to FIG.
As shown in FIG. 6A, in the normal state where drainage is not required, the first O-ring 124 and the second O-ring 126 are connected to the projection 58a of the relay pipe 58 and the coupler by the drain plug body 122. 60, the first drain hole 58c and the second drain hole 60c are closed.

  On the other hand, when it is necessary to drain water such as when there is a risk of freezing due to a decrease in temperature or the like, a drain screw main body is inserted by inserting a screwdriver into the insertion hole 122a of the water drain main body 122 and rotating it. 122 moves to the outside of the relay pipe 58 in the axial direction, and the drain plug 122 is drained as shown in FIG. 6 (b).

  In the drained state, the first drain hole 58c and the second drain hole 60c are simultaneously opened, and the relay pipe 58 and the coupler 60 are in communication with the outside through the first drain hole 58c and the second drain hole 60c. It becomes. Therefore, the raw water flows from the non-purified raw water flow path 60a of the coupler 60 into the purified water raw water flow path 58a of the relay pipe 58 through the second drain hole 60c. The first water drain hole 58c is also opened simultaneously with the second water drain hole 60c, and together with the raw water remaining in the purified water raw water path 58a via the first water drain hole 58c, the raw water flow path for non-purified water of the coupler 60 is used. The raw water that has flowed from 60a into the raw water flow path 58a for water purification of the relay pipe 58 flows out to the outside. That is, in the drained state, the raw water in the mixed faucet body 10, the steel pipe member 18, and the connecting member 20 is discharged to the outside through the first drain hole 58c and the second drain hole 60c.

  According to the faucet device 1 according to the embodiment of the present invention described above, the distance between the portion where the first O-ring 124 of the convex portion 58b comes into contact with and separates from the portion where the second O-ring 126 of the concave portion 60b comes into and out of contact. Is equal to the distance between the first O-ring 124 and the second O-ring 126. Therefore, two independent channels, namely, a purified water raw water channel 58a of the relay pipe 58 and a non-purified raw water channel 60a of the coupler 60 provided inside the purified water raw water channel 58a as the water drain main body 122 moves. It is possible to drain water at the same time. Therefore, even in a place where there is a risk of freezing such as in a cold district, the water faucet device 1 can prevent the water faucet device 1 from being damaged due to water drainage. Further, since the first water drain hole 58c and the second water drain hole 60c are formed concentrically, the water in the non-purified raw water flow path 60a of the coupler 60 is discharged to the purified water raw water flow path 58a of the relay pipe 58. The water in the raw water flow path 58a for water purification is discharged to the outside. Therefore, the place where the water is discharged is not dispersed and the usability can be improved.

  Further, when the water drain main body 122 is inserted into the connecting member 20, since the water drain main body 122 is reduced in a stepped shape toward the insertion direction, the first O-ring fitted to the outer periphery of the water drain main body 122. The positions of 124 and the second O-ring 126 are held at predetermined positions by the steps. For this reason, the distance between the portion where the first O-ring 124 of the convex portion 58 b comes in contact with and the portion where the second O-ring 126 of the concave portion 60 b comes into contact with and away from the first O-ring 124 and the second O-ring 126. To be equal to the distance between the two. Accordingly, the first drain hole 58c and the second drain hole 60c can be simultaneously opened or closed by movement in the uniaxial direction of the drain plug body 122.

  In addition, in one Embodiment of this invention mentioned above, although the drain plug 120 is provided in the connection member 20, this invention is not limited to such a structure. For example, the hose member 16 and the steel pipe member 18 may be provided. When the hose member 16 is provided, the drain plug 120 can be provided at a position where it is easy for the user to reach and easy to perform the draining operation, and the usability can be improved. Moreover, in one Embodiment of this invention mentioned above, it is set as the structure which drains water by moving the water drain main body 122 in the direction pulled out from the inside of the connection member 20, However, This invention is such a structure. It is not limited. For example, it is good also as a structure which drains water by moving the drain plug main body 122 in the direction pushed in in the connection member 20. FIG.

  Moreover, in one Embodiment of this invention mentioned above, the raw water for non-purification flows through the inside of a small diameter pipe (the inner steel pipe member 38, the coupler 60, the inner hose coupling 62, and the inner hose 72), and the said small diameter pipe and the large diameter pipe ( Although the raw water for water purification flows between the outer steel pipe member 36, the one-touch socket 56, the relay pipe 58, and the outer hose 74), the present invention is not limited to such a configuration. Depending on the design of the flow path in the valve cartridge 28 or the flow path forming member 30, it can be selected as appropriate. For example, the raw water for water purification flows inside, that is, the inside of the small-diameter pipe, and the raw water for non-purification water outside, It is good also as a structure which flows between the said small diameter pipe and the said large diameter pipe. When the raw water for water purification flows inside and the raw water for non-purification water flows outside, the raw water for water purification is poured into the water purification cartridge 100 located inside the water discharge head portion 8 with a simpler structure. Can do. In addition, since the raw water for water purification usually requires a smaller flow rate than the raw water for non-purification water, the inner diameter of the small-diameter pipe and the thickness of the peripheral wall are reduced by adopting a configuration in which the raw water for water purification flows in the small-diameter pipe. The flow rate of the raw water for non-purifying water flowing between the small diameter pipe and the large diameter pipe can be easily secured.

  Next, with reference to FIGS. 9A and 9B, a second embodiment, which is a modification of the above-described embodiment, will be described. FIG. 9A is a partially enlarged cross-sectional view showing a normal state of a water faucet of a faucet device according to a modification of the embodiment of the present invention, and FIG. 9B is a modification of the embodiment of the present invention. It is a partial expanded sectional view which shows the draining state of the drain plug of a water faucet device.

  As shown in FIG. 9, the water drain plug 120 according to the second embodiment includes a water drain main body 128 in which the first O-ring 124 and the second O-ring 126 are fitted to the outer periphery, and the water drain main body 128. And an exterior case 130 that covers a part of the protruding portion that protrudes to the outside of the relay pipe 58. A coil spring 132 (biasing member) that urges the water drain main body 128 toward the relay pipe 58 is provided in the exterior case 130. In addition, the wall surface of the outer case 130 has an opening 130a that opens downward and drains water to the outside in a drained state.

  Furthermore, a taper portion 58d that decreases in diameter toward the first drain hole 58c is provided at a portion facing the convex portion 58b on the inner periphery of the relay pipe 58. Similarly, a taper portion 60d that decreases in diameter toward the second drain hole 60c is provided at a portion facing the concave portion 60b on the inner periphery of the coupler 60.

  In the second embodiment of the present invention described above, the coil spring 132 can prevent water leakage from the drain plug 120 in the normal state of the faucet device 1. Further, in the drained state, water is collected in the opening 132a provided in the outer case 130 and drained as it is, so that it becomes easy to handle drainage in the drained state. Further, the tapered portion 58d and the tapered portion 60d make it easier for water to flow into the first drain hole 58c and the second drain hole 60c in the drained state, so that drainage can be performed more reliably.

DESCRIPTION OF SYMBOLS 1 Water faucet device 2 Hot water supply pipe 4 Water supply pipe 6 Operation handle 8 Water discharge head part 8a Water discharge part 8b Changeover switch 10 Mixing water faucet apparatus main body 12 Counter 14 Water discharge head attaching part 16 Hose member 18 Steel pipe member 20 Connection member 22 Fixed valve body 22a Primary side hot water flow path 22b Primary side water flow path 22c Secondary side raw water side flow path 22d Secondary side purified water side flow path 24 Movable valve element 24a Primary side flow path 24b Secondary side flow path 28 Valve cartridge (flow path switching unit)
30 flow path forming member 30a primary side hot water flow path 30b primary side water flow path 30c secondary side raw water side flow path 30d secondary side purified water side flow path 36 outer steel pipe member 36a purified water raw water flow path 38 inner steel pipe member 38a raw water side flow Road 40 Inner steel pipe member connection part 42 Seal member 44 Outer steel pipe member connection part 46 Seal member 48 Connection flow path 58 Relay pipe 58a Raw water flow path for purified water 58b Convex part 58c First water drain hole 60 Coupler 60a Raw water flow path for non-purified water 60b Recess 60c Second drain hole 72 Inner hose 72a Raw water side flow path 74 Outer hose 74a Water purification side flow path 76 Flexible tube 80 Hose connection part of water discharge head part 96 Outer casing member 98 Inner casing member 100 Water purification cartridge (water purification part)
102 Raw water side channel 104 Purified water side channel 106 Straight water discharge channel 108 Shower water discharge channel 112 Straight water outlet 114 Shower water outlet 120 Water drain plug 122 Water drain plug body 122a Insert hole 124 First O-ring 126 2nd O-ring

Claims (6)

A double pipe having a small diameter pipe inside a large diameter pipe, a water discharge section for discharging water supplied from a water supply source through the large diameter pipe or the small diameter pipe, and drainage of the double pipe are possible. A water faucet device comprising:
The double pipe is provided with a first drain hole for communicating between the inside of the large diameter pipe and the outside of the large diameter pipe, and a second drain hole for communicating between the inside of the small diameter pipe and the inside of the large diameter pipe,
The drain plug includes: a drain plug body operated to drain water; a first valve body disposed in the drain plug body so as to be detachable from a first valve seat provided in the first drain hole; And a second valve body disposed in the drain plug body so as to be detachable from a second valve seat provided in the second drain hole,
The first valve body and the second valve body are water faucet devices that open or close the first water drain hole and the second water drain hole as the water drain main body moves. The faucet according to claim 1, wherein a distance between the first valve seat and the second valve seat is held so as to be equal to a distance between the first valve body and the second valve body. apparatus. The said 1st valve body and the said 2nd valve body have a biasing member which urges | biases the said water draining plug main body in the direction holding the closure of the said 1st drain hole and the said 2nd drain hole. Faucet device. An exterior case that covers the protruding portion of the drain plug body that protrudes to the outside of the large-diameter pipe, and the exterior case is an opening that serves as a drain port when the first drain hole and the second drain hole are opened. The faucet device according to any one of claims 1 to 3, further comprising a portion. The water discharging apparatus according to any one of claims 1 to 4, wherein a tapered shape that reduces a diameter toward the first drain hole is provided in a region adjacent to the first drain hole of the large-diameter pipe. The water discharge device according to any one of claims 1 to 5, wherein a taper shape having a diameter reduced toward the second drain hole is provided in a region adjacent to the second drain hole of the small diameter pipe.