JPWO2019138472A1 - Water discharge head with water purification function, water purification cartridge and faucet device - Google Patents

Abstract

An object of the present invention is to provide a water purification cartridge capable of preventing erroneous recognition of water discharge. A water discharge head (8) can switch between a first mechanism (J1) and a second state (J2) and a switching mechanism capable of switching between water discharged from a discharge port and raw water or purified water. It has a regulating member RG1 that regulates switching to purified water and permits switching from raw water to purified water in the second state J2, and a regulation release section DR1 that transitions the regulating member RG1 from the first state J1 to the second state J2. And a water purification cartridge PC1. When the water purification cartridge PC1 is not mounted, the regulating member RG1 is in the first state J1, and when the water purification cartridge PC1 is mounted, the regulating member RG1 is in the second state J2. [Selection diagram] FIG.

Description

  The present invention relates to a water discharge head with a water purification function, a water purification cartridge, and a faucet device.

  2. Description of the Related Art A water discharge head having a water purification cartridge and having a water purification function is known. Japanese Patent No. 3454756 discloses a shower head with a water purification function capable of switching between a raw water flow path that does not pass through a water purification cartridge and a water purification flow path that passes through a water purification cartridge.

Japanese Patent No. 3454756

  This type of water discharge head or a faucet device having the water discharge head has an operation unit capable of switching between raw water and purified water. Examples of the operation unit include a push button, a lever, and a dial. In some cases, a display unit that indicates whether the spout is raw water or purified water is provided.

  Through operation, display, and the like, the user can recognize whether the discharged water is raw water or purified water. A state in which the water purification cartridge is not inserted may occur due to reasons such as forgetting to insert the water purification cartridge. However, even in this state, the user sometimes uses the faucet while misunderstanding that the purified water has come out. In other words, a situation occurs in which it is erroneously recognized that purified water is coming out although raw water is actually coming out.

  An object of the present invention is to provide a water discharge head and a water purification cartridge that can prevent erroneous recognition of water discharge.

  The preferred water discharge head with a water purifying function is a discharge port, a switching mechanism capable of switching between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state. In the second state, the switching mechanism controls the switching from the raw water to the purified water by the switching mechanism, and in the second state, the regulating member allows the switching from the raw water to the purified water by the switching mechanism. The water purifying cartridge includes a water purifying cartridge having a regulation release section for shifting to the two states, and a water purifying cartridge mounting section. When the water purification cartridge is not mounted on the cartridge mounting portion, the restricting member is in the first state, and when the water purification cartridge is mounted on the cartridge mounting portion, the restricting member is caused by the restriction release portion. The second state is set.

  Preferably, the restricting member has a switching restricting portion that is in the first position in the first state and is in the second position in the second state. Preferably, the switching restricting portion at the first position comes into contact with an interlocking contact portion interlocked with the switching mechanism in a process of switching from raw water to purified water by the switching mechanism. Preferably, the switching restricting portion at the second position does not abut on the interlocking abutting portion in a process of switching from raw water to purified water by the switching mechanism.

  Preferably, when the regulation release portion contacts the regulation member, the regulation member shifts from the first state to the second state.

  Preferably, the regulating member is rotatably fixed. Preferably, mutual rotation between the first state and the second state is achieved by rotation of the regulating member.

  A preferred faucet device includes the water discharge head described above.

  A preferred water purification cartridge has a discharge port, a switching mechanism capable of switching between discharged water from the discharge port and raw water, and a reciprocal transition between a first state and a second state, and the switching in the first state. A water discharge head with a water purification function, comprising: a regulating member that regulates switching from raw water to purified water by a mechanism and permits switching from raw water to purified water by the switching mechanism in the second state. It is a water purification cartridge that can be attached to Preferably, the water purification cartridge includes a water purification function unit and a regulation release unit that shifts the regulation member from the first state to the second state.

  Preferably, the regulation release section can move the regulation member from the first state to the second state by contacting the regulation member.

  Preferably, the regulation release section is an end face on the downstream side of the water purification cartridge.

  Preferably, the water purification cartridge has a connection end that constitutes a downstream end of the water purification cartridge. Preferably, the water purification cartridge mounting portion has an insertion portion into which the connection end is inserted. Preferably, the connection end portion has a gap forming portion that forms a gap between the connection end portion and the insertion portion. Preferably, an end surface of the gap forming portion is the restriction release portion.

  Preferably, the connection end further includes an O-ring disposed on the upstream side of the restriction release section, and a wall disposed between the restriction release section and the O-ring. Preferably, the outermost portion in the radial direction of the restriction release portion is located radially inward of the outermost portion in the radial direction of the wall portion.

  False positives for water discharge are prevented.

FIG. 1 is a perspective view of the faucet device according to the first embodiment. FIG. 2 is a front view of the water discharge head in the faucet apparatus of FIG. FIG. 3A is a cross-sectional view taken along the line AA of FIG. 2, and FIG. 3B is a cross-sectional view taken along the line BB of FIG. FIG. 3A and FIG. 3B are cross-sectional views in a raw water discharge state. FIG. 4A is a sectional view taken along line AA of FIG. 3A, and FIG. 4B is a sectional view taken along line BB of FIG. 3A. FIG. 5A is a cross-sectional view corresponding to FIG. 3A, and is a cross-sectional view in a state of discharging purified water. FIG. 5B is a cross-sectional view corresponding to FIG. 3B, and is a cross-sectional view in a state of discharging purified water. FIG. 6A is a cross-sectional view corresponding to FIG. 4A, and is a cross-sectional view in a state of discharging purified water. FIG. 6B is a cross-sectional view corresponding to FIG. 4B, and is a cross-sectional view in a state of discharging purified water. FIG. 7 is an exploded perspective view of the faucet device of FIG. FIG. 8A is an enlarged sectional view of the water discharge head according to the first embodiment in a raw water discharge state, and FIG. 8B is an enlarged sectional view in a switching restricted state. 8A and 8B are cross-sectional views in a state where the water purification cartridge is not mounted. FIG. 9A is an enlarged cross-sectional view of the water discharge head of the first embodiment in a raw water discharge state, and FIG. 9B is an enlarged cross-sectional view in a switching restricted state. 9A and 9B are cross-sectional views in a state where the water purification cartridge is not mounted. FIG. 10A is an enlarged sectional view of a part of FIG. FIG. 10B is an enlarged cross-sectional view of a part of FIG. FIGS. 11A and 11B are cross-sectional views showing a state immediately before the water purification cartridge is mounted at a normal position. The cross-sectional position in FIG. 11A is the same as that in FIG. The cross-sectional position in FIG. 11B is the same as that in FIG. FIG. 12A is a perspective view of the regulating member according to the first embodiment, FIG. 12B is a plan view of the regulating member, and FIG. 12C is a side view of the regulating member. FIG. 13A is a perspective view of the ball holder according to the first embodiment, FIG. 13B is a plan view of the ball holder, and FIG. 13C is a side view of the ball holder. It is. FIG. 14A is a perspective view of a water purification cartridge according to the first to fourth embodiments, FIG. 14B is a side view of the water purification cartridge, and FIG. 14C is a plan view of the water purification cartridge. . FIG. 15 is a perspective view of a faucet device according to the second embodiment. FIG. 16 is a front view of the water discharge head in the faucet device of FIG. FIG. 17 is a sectional view taken along line AA of FIG. FIG. 18 is a sectional view taken along line AA of FIG. FIG. 19 is a cross-sectional view corresponding to FIG. 17, and is a cross-sectional view in a purified water discharge state. FIG. 20 is a sectional view taken along line AA of FIG. FIG. 21 is an exploded perspective view of the faucet device of FIG. FIG. 22A is an enlarged cross-sectional view of the water discharge head according to the second embodiment in a raw water discharge state, and FIG. 22B is an enlarged cross-sectional view of the water discharge head in a switching restricted state. FIGS. 22A and 22B are cross-sectional views in a state where the water purification cartridge is not mounted. FIG. 23A is an enlarged sectional view of the water discharge head according to the second embodiment in a raw water discharge state, and FIG. 23B is an enlarged sectional view of the water discharge head in a switching restricted state. FIGS. 23A and 23B are cross-sectional views in an unmounted state. 24A is a cross-sectional view in which a part of FIG. 17 is enlarged, and FIG. 24B is a cross-sectional view in which a part of FIG. 19 is enlarged. FIG. 25A is a perspective view of a regulating member according to the second embodiment, FIG. 25B is a plan view of the regulating member, and FIG. 25C is a side view of the regulating member. FIG. 26 is a perspective view of a faucet device according to the third embodiment. FIG. 27A is a front view of the water discharge head according to the third embodiment in a raw water discharge state, and FIG. 27B is a front view of the water discharge head at a switching restriction position. (c) is a front view of the water discharge head in a purified water discharge state. FIG. 28 is a cross-sectional view of the water discharge head according to the third embodiment. FIG. 28 is a sectional view in a raw water discharge state. FIG. 29 is a sectional view of a water discharge head according to the third embodiment. FIG. 29 is a cross-sectional view in a purified water discharge state. FIG. 30A is an enlarged cross-sectional view of the water discharge head according to the third embodiment in a raw water discharge state, and FIG. 30B is an enlarged cross-sectional view of the water discharge head in a switching restricted state. FIGS. 30A and 30B are cross-sectional views in a state where the water purification cartridge is not mounted. FIG. 31 is a perspective view of a faucet device according to the fourth embodiment. FIG. 32A is a side view of the water discharge head according to the fourth embodiment in a raw water discharge state, and FIG. 32B is a side view of the water discharge head in a purified water discharge state. 32A and 32B, the cover of the head portion is removed. FIG. 33 is a sectional view of a water discharge head according to the fourth embodiment. FIG. 33 is a cross-sectional view in a raw water discharge state. FIG. 34 is a sectional view of a water discharge head according to the fourth embodiment. FIG. 34 is a cross-sectional view in a purified water discharge state. FIG. 35A is an enlarged cross-sectional view of the water discharge head of the fourth embodiment in a raw water discharge state, and FIG. 35B is an enlarged cross-sectional view of the water discharge head in a switching restricted state. FIGS. 35A and 35B are cross-sectional views in a state where the water purification cartridge is not mounted. FIG. 36 is a side view showing the first state and the second state of the regulating member according to the first embodiment. FIG. 37 is an enlarged sectional view of the water discharge head of the first embodiment. FIG. 38 is the same enlarged cross-sectional view as FIG.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with reference to the drawings as appropriate.

  Note that, unless otherwise specified, the radial direction in the present application means the radial direction of the water purification cartridge PC1 attached at a regular position. Unless otherwise described, the axial direction in the present application means the axial direction of the water purification cartridge PC1 attached at the regular position.

  Unless otherwise specified, the upstream side in the present application means the upstream side in the flow of water, and the downstream side means the downstream side in the flow of water.

[First Embodiment]
FIG. 1 is a perspective view of the faucet device 2 according to the first embodiment. The faucet device 2 is attached to a sink (not shown). In FIG. 1, a portion that is not visually recognized, that is, a portion inside the sink is not illustrated. In addition, as an installation place of the faucet device 2, a sink, a wash basin, and a bathroom are illustrated.

  The faucet device 2 has a main body 4, a lever handle 6, and a water discharge head 8. The faucet device 2 is a so-called single lever type faucet. The temperature of water discharge can be adjusted by turning the lever handle 6 left and right. The amount of water discharged can be adjusted by turning the lever handle 6 up and down. A valve mechanism that allows adjustment of the temperature and the amount of water discharged is built in the main body 4. This valve mechanism is known.

  Although not shown, the faucet device having the faucet device 2 has a hot water introducing pipe and a water introducing pipe. The hot water introduction pipe is connected to, for example, a pipe extending from the water heater. The water introduction pipe is connected to a water supply pipe without passing through a water heater, for example.

  Heated hot water is introduced into the hot water introduction pipe. Heating is provided by a water heater. Unheated water is introduced into the water introduction pipe. The mixing ratio of hot water and water is adjusted by the valve mechanism. With this mixing ratio, temperature control of the water discharge is achieved. In the following, heated hot water, unheated water, and a mixed liquid thereof are also simply referred to as “water”.

  The water discharge head 8 includes a water guide unit 10, a switching unit 12, an operation unit 14, a water shape adjustment unit 16, a display unit 20, and a discharge port 22. In the present embodiment, the operation unit 14 is a push button. The water guide 10 also functions as a grip.

  The water shape adjusting unit 16 can change the shape (water shape) of the discharged water. The water shape adjustment unit 16 has a water shape adjustment lever 18. By operating the water shape adjusting lever 18, the water shape can be changed. By operating the water shape adjusting lever 18, a shower water shape, a straight water shape, and a water shape intermediate therebetween can be selected.

  The water discharge head 8 has a raw water flow path and a purified water flow path. When the raw water flow path is selected, the raw water is discharged from the discharge port 22. The state in which the raw water is discharged is also referred to as a raw water discharge state. When the purified water flow path is selected, purified water is discharged from the discharge port 22. The state in which purified water is discharged is also referred to as a purified water discharge state.

  The switching unit 12 has a switching mechanism that can switch between purified water and raw water by operating the operation unit 14. The details of this switching mechanism will be described later.

  FIG. 2 is a front view of the water discharge head 8. FIG. 3A is a sectional view taken along line AA of FIG. FIG. 3B is a cross-sectional view taken along line BB of FIG. FIG. 4A is a cross-sectional view taken along the line AA of FIG. FIG. 4B is a cross-sectional view taken along line BB of FIG.

  The operation unit 14 functions as a switching button. When switching the flow path, the operation unit 14 is pressed. Each time the operation unit 14 is pressed, switching between the raw water flow path and the purified water flow path is performed. In other words, each time the operation unit 14 is pressed, switching between the raw water discharge state and the purified water discharge state is performed. As described later, the switching mechanism has an alternate operation type thrust lock mechanism. With this thrust lock, a push button operation of the operation unit 14 is realized. Each time the pressing operation is performed, the push button 14 shifts between the protruding position and the depressed position.

  In addition, the position of the operation unit 14 when the raw water is discharged is also referred to as a raw water discharge position. In the present embodiment, the raw water discharge position is the pop-out position. Further, the position of the operation unit 14 when the purified water is discharged is also referred to as a purified water discharge position. In the present embodiment, the purified water discharge position is the push-in position.

  In the present application, the operation direction of the push button 14 is also referred to as the front-back direction. By pressing, the push button 14 moves backward. The projecting position is ahead of the pushed-in position. In the mutual movement between the pop-out position and the pushing position, the maximum pushing position is passed. The maximum pushing position is behind the pushing position. When the push button 14 at the pop-out position is pressed, the push button 14 stops at the pushed-in position via the maximum pushed-in position. The switching operation position is set at or immediately before the maximum pushing position. When the switching operation position is reached, the switching is effective and the operation shifts to the pushing position. Even if the operation is released, the pressed position is maintained. When the push button 14 at the push position is pressed, the push button 14 stops at the pop-out position via the maximum push position (switching operation position). Even when the operation is canceled, the pop-out position is maintained.

  In FIGS. 1, 2, 3 (a), 3 (b), 4 (a) and 4 (b), the push button 14 is at the protruding position. In the water discharge head 8, when the push button 14 is at the protruding position, the raw water flow path is selected. In the water discharge head 8, when the push button 14 is at the protruding position, the raw water is discharged. Conversely, when the push button 14 is at the protruding position, purified water may be discharged.

  FIGS. 5A and 5B are cross-sectional views of the water discharge head 8 when the push button 14 is at the pressed position. The cross-sectional position in FIG. 5A is the same as that in FIG. The cross-sectional position in FIG. 5B is the same as that in FIG. FIG. 6A is a cross-sectional view along the line AA in FIG. FIG. 6B is a cross-sectional view taken along line BB of FIG. 5A.

  5 (a), 5 (b), 6 (a) and 6 (b), the push button 14 is in the depressed position. In the water discharge head 8, when the push button 14 is at the pushed-in position, the purified water flow path is selected. In the water discharge head 8, when the push button 14 is at the pressed position, purified water is discharged. Conversely, when the push button 14 is at the protruding position, the raw water may be discharged.

  FIG. 7 is an exploded perspective view of the water discharge head 8.

  As shown in FIG. 7, the water discharge head 8 has a water purification cartridge PC1. The water purification cartridge PC1 is arranged inside the outer cylinder part 24. The above-described water guide (grip) 10 includes an outer cylinder 24 and a water purification cartridge PC1.

  A raw water flow path WG is formed outside the water purification cartridge PC1 (see a cross-sectional view of FIG. 3A and the like). A water purification channel WJ is formed inside the water purification cartridge PC1 (see a cross-sectional view of FIG. 3A and the like). When in the raw water discharge state, the raw water that has passed through the raw water flow path WG is discharged from the discharge port 22 via the raw water flow path WG in the switching mechanism. On the other hand, when in the purified water discharge state, the raw water is filtered by the permeation portion 26 of the purified water cartridge PC1 in the process from the outside to the inside of the purified water cartridge PC1, and becomes purified water. The purified water is discharged from the discharge port 22 via the purified water flow path WJ in the purified water cartridge PC1 and the purified water flow path WJ in the switching mechanism. In addition, this transmission part 26 is an example of a water purification function part.

  The water discharge head 8 includes a head main body 28, an upper head cover 30, and a lower head cover 32.

  The switching section 12 of the water discharge head 8 has a thrust lock mechanism 34. The thrust lock mechanism 34 is housed in the head main body 28. The thrust lock mechanism 34 includes a first switching frame 36, a second switching frame 38, a switching ring 40, a switching shaft 42, a coil spring 44, a switching cover 46, and an O-ring 48. The switching shaft 42 has push rods 50 and 51, and a button holding part 52. The switching cover 46 has a rear bottom portion 56 and a slit 58. The switching ring 40 is fixed to the front side of the switching cover 46. The switching shaft 42 moves in the front-back direction guided by the slit 58. The second switching frame 38 moves together with the switching shaft 42. In conjunction with the pressing operation of the operation unit 14, the second switching frame 38 and the switching shaft 42 move (reciprocate) in the front-rear direction. The coil spring 44 urges the switching cover 46 and the switching shaft 42 in a direction away from each other. The first switching frame 36 rotates each time a button is pressed, and can be held at two different positions.

  The thrust lock mechanism 34 implements an alternate operation. Also in the aforementioned Japanese Patent No. 3454756, the same thrust lock mechanism as that of the present embodiment is employed. Generally, a heart-shaped cam mechanism, a rotary cam mechanism, a ratchet cam mechanism, and the like are known as a so-called alternate operation type thrust lock mechanism. All of these mechanisms are known. As the thrust lock mechanism 34, for example, any of these mechanisms can be adopted.

  The water discharge head 8 has a water shape switching assembly 70. The water shape switching assembly 70 has the water shape adjustment unit 16, the water shape adjustment lever 18, and the discharge port 22 described above. Further, the water type switching assembly 70 has a valve seat forming portion 80.

  The switching mechanism of the water discharge head 8 includes the above-described operation unit 14, a first valve V1, and a second valve V2. The water discharge is switched by opening and closing the two valves.

  The first valve V1 has a valve seat 101a, a first valve body 101b, a ball holding body 101c, and an elastic body 101d. The first valve V1 is a ball valve. The first valve body 101b is a ball. The valve seat 101a is an opening edge of the circular hole. The valve seat 101a is formed in the valve seat forming section 80. The ball 101b is held by a ball holding body 101c. The ball holder 101c is open downward. An elastic body 101d is arranged between the upper part of the ball holding body 101c and the ball 101b. This elastic body 101d is a coil spring. The ball 101b is constantly urged toward the valve seat 101a by the elastic body 101d.

  The second valve V2 has a valve seat 102a, a second valve body 102b, a ball holder 102c, and an elastic body 102d. The second valve V2 is a ball valve. The second valve body 102b is a ball. The valve seat 102a is an opening edge of the circular hole. The valve seat 102a is formed in the valve seat forming section 80. The ball 102b is held by a ball holding body 102c. The ball holder 102c is open downward. An elastic body 102d is arranged between an upper portion of the ball holding body 102c and the ball 102b. This elastic body 102d is a coil spring. The ball 102b is constantly biased toward the valve seat 102a by the elastic body 102d.

  The end of the push rod 50 of the switching shaft 42 is connected to the ball holder 101c. The end of the push rod 51 of the switching shaft 42 is connected to the ball holder 102c. The ball holder 101c and the ball holder 102c move in the front-rear direction together with the switching shaft 42. The ball 101b moves in the front-rear direction together with the ball holder 101c. The ball 102b moves in the front-rear direction together with the ball holder 102c. Then, the switching shaft 42 moves in the front-rear direction together with the operation unit 14.

  The valve seat 101a and the valve seat 102a are arranged side by side in a direction substantially perpendicular to the front-back direction, but their front-back positions are (slightly) different. The valve seat 101a is located behind the valve seat 102a.

  When the operation unit 14 is at the protruding position, the ball 102b fits into the valve seat 102a, and the second valve V2 closes. At this time, since the center of the ball 101b is shifted from the center of the valve seat 101a, the first valve V1 is open. In this state, raw water is discharged. The second valve V2 is a water purification valve that closes the water purification flow path.

  When the operation unit 14 is at the pushing position, the ball 101b fits into the valve seat 101a, and the first valve V1 closes. At this time, since the center of the ball 102b is shifted from the center of the valve seat 102a, the second valve V2 is open. In this state, purified water is discharged. The first valve V1 is a raw water valve that closes a raw water flow path.

  The water discharge head 8 has a regulating member RG1. The regulating member RG1 plays a role in regulating switching to the purified water discharge state when the purified water cartridge PC1 is not mounted.

  The water discharge head 8 has an urging member 104. The urging member 104 urges the regulating member RG1 such that the regulating member RG1 is in a first state J1 (described later). In the present embodiment, the biasing member 104 is a torsion spring (a torsion coil spring). Thus, the regulating member RG1 is urged to be in the first state J1.

  The ball holder 102c has an interlocking contact part LC1. The interlocking contact part LC1 is a rod-shaped part whose rear end is a free end. The interlocking contact portion LC1 interlocks with the movement of the operation unit 14. The interlocking contact part LC1 moves in the front-back direction with the operation of the operation unit 14. When the movement of the interlocking contact part LC1 is stopped, the operation unit 14 cannot be moved. When the movement of the interlocking contact part LC1 is stopped, the operation unit 14 cannot be operated.

  3 (a), 3 (b), 4 (a) and 4 (b), the operation unit 14 is at the protruding position. When the operation unit 14 is at the protruding position, the water discharge head 8 is in a raw water discharge state. 5 (a), 5 (b), 6 (a) and 6 (b), the operation unit 14 is in the pushed-in position. When the operation unit 14 is at the pushed-in position, the water discharge head 8 is in a purified water discharge state. In each of these drawings, the water purifying cartridge PC1 is mounted on the water discharge head 8 (at a regular position). The water purification cartridge PC1 is mounted on the cartridge mounting section. In the water discharge head 8, the cartridge mounting portion is a portion that extends from the inside of the outer cylindrical portion 24 to the inside of the head main body 28. The water purification cartridge PC1 can exhibit its function (generation of purified water) by being mounted on (the regular position of) the cartridge mounting portion.

  FIGS. 8A, 8B, 9A, and 9B are cross-sectional views in a state where the water purification cartridge PC1 is not mounted on the cartridge mounting portion. 8 (a) and 8 (b) are the same as those in FIG. 3 (b). The positions of the cross sections in FIGS. 9A and 9B are the same as those in FIG. 4B.

  8A and 9A, the operation unit 14 is at the protruding position. 8B and 9B, the operation unit 14 is at the switching restriction position. The switching restriction position is a position where the operation of the operation unit 14 to the purified water discharge state is restricted.

  FIG. 10A is an enlarged cross-sectional view of a part of FIG. FIG. 10B is an enlarged cross-sectional view of a part of FIG.

  In addition, for convenience of description, in the present application, a state in which the water purification cartridge PC1 is not mounted on the cartridge mounting portion is also referred to as an unmounted state. The state in which the water purification cartridge PC1 is mounted on the cartridge mounting portion is also referred to as a mounted state. 8 (a), 8 (b), 9 (a) and 9 (b) are cross-sectional views in a non-mounted state. FIGS. 10A and 10B are cross-sectional views of the mounted state.

  The state of the regulating member RG1 is different between the mounted state and the non-mounted state. In the unmounted state shown in FIGS. 8A, 8B, 9A, and 9B, the regulating member RG1 is in the first state J1. In the mounted state shown in FIGS. 10A and 10B, the regulating member RG1 is in the second state J2.

  In the present embodiment, the difference in the state of the regulating member RG1 is a difference in the posture of the regulating member RG1. The regulating member RG1 is urged by the urging member 104 to be in the first posture. For this reason, in the unmounted state, the regulating member RG1 is in the first posture (see FIGS. 8A and 8B). In the mounted state, the regulating member RG1 is in the second posture (see FIGS. 10A and 10B). This difference in posture is achieved by rotation. By mounting the water purification cartridge PC1 on the cartridge mounting portion, the downstream end surface of the water purification cartridge PC1 comes into contact with the regulating member RG1, and the regulating member RG1 rotates. By this rotation, the regulating member RG1 shifts from the first state J1 (first posture) to the second state J2 (second posture). Details of the operation of the regulating member RG1 will be described later.

  As described above, the urging member 104 urges the regulating member RG1 toward the first state J1. Therefore, when the water purification cartridge PC1 is inserted against the urging force of the urging member 104 and the regulating member RG1 is in the second state J2, the urging member 104 presses the water purification cartridge PC1 in the removal direction. . The detaching direction is a direction from the connection end 140 toward the rear forming part 142 (see FIG. 14B). Therefore, removal of the water purification cartridge PC1 becomes easy. As for the urging member 104, the O-ring 162 attached to the water purification cartridge PC1 may adhere to the water purification cartridge PC1 to make it difficult to remove the urging member 104. However, the urging member 104 contributes to solving this inconvenience. As described above, the regulating member RG1 has an effect of supporting removal of the water purification cartridge PC1 (removal support effect).

  As shown in FIGS. 10A and 10B, when the water purification cartridge PC1 is mounted and the regulating member RG1 is in the second state J2, the interlocking contact portion LC1 is irrespective of the position of the operation portion 14. Does not contact the regulating member RG1. When the regulating member RG1 is in the second state J2, switching from raw water to purified water is not regulated by the regulating member RG1. When the regulating member RG1 is in the second state J2, the transition from the raw water discharge state (FIG. 10A) to the purified water discharge state (FIG. 10B) is achieved.

  On the other hand, when the water purification cartridge PC1 is not mounted and the regulating member RG1 is in the first state J1, in the process of switching from raw water to purified water, the interlocking contact portion LC1 contacts the regulating member RG1 (FIG. b) and FIG. 9 (b)). When the operating section 14 is pushed in from the protruding position, the interlocking contact section LC1 contacts the regulating member RG1 before the operating section 14 reaches the pushed-in position. Due to this contact, the operation unit 14 cannot be pushed further. When the regulating member RG1 is in the first state J1, switching from raw water to purified water is regulated by the regulating member RG1. When the regulating member RG1 is in the first state J1, the transition from the raw water discharge state (FIG. 10A) to the purified water discharge state (FIG. 10B) is restricted. When the regulating member RG1 is in the first state J1, the operation unit 14 cannot be moved from the raw water discharge position to the purified water discharge position.

  In order to switch the water discharge by operating the above-described thrust lock mechanism, it is necessary to push the operation unit 14 further than the pushing position. That is, in order to switch the water discharge, an overstroke is required. The position of the operation unit 14 at the time when it is pushed down the most is also referred to as a maximum pushing position. The operation direction distance between the pop-out position and the push-in position is X mm, and the operation direction distance of the overstroke is Y mm. The distance between the pressed position and the maximum pressed position is Ymm. Therefore, the maximum movable distance of the operation unit 14 is (X + Y) mm. In the present embodiment, X is 4 mm and Y is 2 mm. In addition, the operation direction means the moving direction of the operation unit 14.

  The switching restriction position may be between the pop-out position and the push-in position. That is, the switching restriction position may be in the range of the Xmm. Further, the switching restriction position may be within an overstroke range. That is, the switching restriction position may be between the pushed position and the maximum pushed position. In other words, the switching restriction position may be in the range of the Ymm. However, before the switching by the thrust lock mechanism operates, the movement of the operation unit 14 needs to be restricted. That is, the switching of the operation unit 14 needs to be restricted before the switching operation position is reached. From the viewpoint of the certainty of the switching control, the switching control position is preferably between the pop-out position and the push-in position.

  FIGS. 11A and 11B are cross-sectional views showing a state immediately before the water purification cartridge PC1 is mounted at a regular position. The cross-sectional position in FIG. 11A is the same as that in FIG. The cross-sectional position in FIG. 11B is the same as that in FIG.

  As described above, in the unmounted state, the regulating member RG1 is in the first state J1. 11A and 11B, the regulating member RG1 is in the first state J1. In the process of mounting the water purification cartridge PC1, the downstream end surface EF1 of the water purification cartridge PC1 contacts the regulating member RG1. FIGS. 11A and 11B show a state where the end face EF1 is about to come into contact with the regulating member RG1. From this state, the water purification cartridge PC1 is inserted further downstream (see black arrows in FIGS. 11A and 11B). By this insertion, the regulating member RG1 is pushed by the end face EF1 and rotates. As a result of this rotation, the regulating member RG1 shifts from the first state J1 (FIGS. 11A and 11B) to the second state J2 (FIGS. 10A and 10B).

  FIG. 12A is a perspective view of the regulating member RG1. FIG. 12B is a plan view of the regulating member RG1. FIG. 12C is a side view of the regulating member RG1.

  The regulating member RG1 has a shaft portion 110, a regulation releasing contact portion 112, and a switching regulating portion 114. Further, the regulating member RG1 has a first state holding portion 116. The shaft 110 is a rotation shaft of the regulating member RG1.

  The first state holding unit 116 holds the regulating member RG1 in the first state J1 by abutting on the adjacent portion by the urging force of the urging member 104. The adjacent portion is a member adjacent to the regulating member RG1, and may be any member.

  The restriction release contact portion 112 is located on one side of the shaft portion 110, and the switching restriction portion 114 is located on the other side of the shaft portion 110. In the first state J1 (see FIGS. 11A and 11B), the regulation release contact portion 112 is located on the upstream side (rearward) of the shaft portion 110, and the switching restriction portion 114 is located downstream of the shaft portion 110. Side (front).

  As the restriction release contact part 112, a first restriction release contact part 112a and a second restriction release contact part 112b are provided. The first restriction release contact portion 112a is an end of a protruding portion 118 protruding from the first position of the shaft portion 110. The second restriction release contact portion 112b is an end of the protrusion 120 protruding from the second position of the shaft 110.

  The regulating member RG <b> 1 has a U-shaped portion 122 extending from a position of the shaft portion 110 and reaching another position of the shaft portion 110. The switching restricting section 114 is provided on the U-shaped section 122. The first state holding portion 116 is an end surface of a protrusion 124 protruding from the U-shaped portion 122.

  FIG. 13A is a perspective view of the ball holding body 102c. The ball holding member 102c has a ball housing portion 130 and the above-described interlocking contact portion LC1. The ball housing section 130 is a cylindrical section whose lower part is open. The ball 102b is housed in the ball housing 130. The interlocking contact part LC1 is a rod-shaped part protruding from the ball housing part 130. The interlocking contact portion LC1 extends in the front-rear direction. The interlocking contact portion LC1 has an end face 132. The end face 132 is a rear end face of the interlocking contact part LC1.

  As shown in FIG. 8B, in the unmounted state, the interlocking contact part LC1 (the end face 132) is in the first state J1 while the operation unit 14 is being moved from the raw water discharge position to the purified water discharge position. It comes into contact with the regulating member RG1 (the switching regulating portion 114 thereof). Due to this contact, the interlocking contact portion LC1 cannot move further backward. Due to this contact, the operation unit 14 cannot be pushed further. Therefore, the operation unit 14 cannot be set to the clean water discharge position.

  On the other hand, as shown in FIG. 10B, in the mounted state, in the process of moving the operation unit 14 from the raw water discharge position to the purified water discharge position, (the end surface 132 of the interlocking contact part LC1) changes to the second state J2. It does not come into contact with (a switching control unit 114 of) a certain control member RG1. Therefore, the interlocking contact part LC1 can move further backward, and reaches the purified water discharge position.

  FIG. 14A is a perspective view of the water purification cartridge PC1. FIG. 14B is a side view of the water purification cartridge PC1. FIG. 14C is a front view of the water purification cartridge PC1. FIG. 14C is a view of the water purification cartridge PC1 as viewed from the downstream side.

  The water purification cartridge PC1 includes the above-described transmitting portion 26, a connection end portion 140 disposed at a front end portion of the transmitting portion 26, and a rear forming portion 142 disposed at a rear end portion of the transmitting portion 26. The material of the connection end 140 is a resin. The connection end 140 is integrally formed as a whole. The connection end 140 is integrally formed of resin. The connection end 140 is coaxial with the transmission section 26. The rear forming part 142 is coaxial with the transmitting part 26. As described above, the transmission section 26 is an example of a water purification function section (a section that exhibits a water purification function). The water purification cartridge PC1 does not need to have the transmission part 26.

  The connection end 140 is provided on the downstream side of the transmission unit 26. The inside of the connection end 140 is hollow. This cavity functions as a purified water channel WJ. That is, the connection end 140 has the purified water flow path WJ therein. The end of the connection end 140 is an end EF1 on the downstream side of the water purification cartridge PC1.

  The transmission part 26 is cylindrical. The transmission part 26 has a hollow part inside. This hollow portion functions as a purified water flow path WJ. The transmission part 26 may have, for example, an outer filtration layer and an inner filtration layer. A water purification material may be disposed between the outer filtration layer and the inner filtration layer. The water purification material contains, for example, activated carbon as a main component. For example, a nonwoven fabric is used for the outer filtration layer and the inner filtration layer. A ceramic having a sterilizing action may be employed for the outer filtration layer and / or the inner filtration layer. An ion exchanger may be employed for the outer filtration layer and / or the inner filtration layer. The outer filtration layer may be a plurality of layers. The inner filtration layer may be a plurality of layers.

  The rear formation part 142 closes the rear side of the transmission part 26. On the other hand, the connection end 140 is permeable to water. The internal space of the connection end 140 is a purified water flow path WJ. The purified water generated by passing through the transmission section 26 passes through the connection end 140 and reaches the switching section 12.

  The connection end 140 has a first cylindrical portion 150. Further, the connection end 140 has a second cylindrical portion 152. Further, the connection end 140 has a third cylindrical portion 154. The second cylindrical portion 152 is located downstream of the third cylindrical portion 154. The first cylindrical part 150 is located downstream of the second cylindrical part 152. The second cylindrical portion 152 is located between the first cylindrical portion 150 and the third cylindrical portion 154. The first cylindrical part 150 and the second cylindrical part 152 are coaxial. The second cylindrical portion 152 and the third cylindrical portion 154 are coaxial. The central axis of the first cylindrical portion 150 coincides with the central axis of the water purification cartridge PC1. The central axis of the second cylindrical portion 152 coincides with the central axis of the water purification cartridge PC1. The central axis of the third cylindrical portion 154 coincides with the central axis of the water purification cartridge PC1.

  The connection end 140 has a maximum outer diameter portion. In the present embodiment, the maximum outer diameter portion of the connection end 140 is the third cylindrical portion 154. This maximum outer diameter portion (the third cylindrical portion 154) covers the downstream end of the transmission portion 26.

  The outer diameter of the third cylindrical portion 154 is larger than the outer diameter of the second cylindrical portion 152. A step surface 156 is formed between the third cylindrical portion 154 and the second cylindrical portion 152. The step surface 156 extends in the radial direction of the water purification cartridge PC1. The outer diameter of the second cylindrical portion 152 is larger than the outer diameter of the first cylindrical portion 150. A step surface 158 is formed between the second cylindrical portion 152 and the first cylindrical portion 150. The step surface 158 extends in the radial direction of the water purification cartridge PC1.

  The first cylindrical portion 150 has a flange 160 and an O-ring 162. The O-ring 162 is mounted on the outer surface of the first cylindrical portion 150. The flange 160 extends in the radial direction of the water purification cartridge PC1. The flange 160 is located downstream of the O-ring 162. The flange 160 supports the O-ring 162 on the downstream side.

  As described above, the water purification cartridge PC1 has the end surface EF1 on the downstream side. The end face EF1 is an end face of the first cylindrical portion 150. When the end face EF1 comes into contact with the protrusions 118 and 120 of the regulating member RG1, the regulating member RG1 rotates. This rotation is a rotation using the shaft portion 110 as a rotation axis. By this rotation, the regulating member RG1 shifts from the first state J1 to the second state J2.

[Second embodiment]
FIG. 15 is a perspective view of a faucet device 200 according to the second embodiment. The faucet device 200 is attached to a sink (not shown). In FIG. 15, a portion that is not visually recognized, that is, a portion inside the sink is not illustrated. In addition, as an installation place of the faucet device 200, a wash basin and a bathroom are illustrated besides a sink.

  The faucet device 200 has a main body 204, a lever handle 206 and a water discharge head 208. The faucet device 200 is a so-called single lever type faucet. The temperature of the spout can be adjusted by turning the lever handle 206 left and right. The water discharge amount can be adjusted by turning the lever handle 206 up and down. A valve mechanism that enables adjustment of the temperature and the amount of water discharged is built in the main body 204. This valve mechanism is known. Although not shown, the faucet device having the faucet device 200 has a hot water introduction pipe and a water introduction pipe.

  The water discharge head 208 includes a water guide unit 210, a switching unit 212, an operation unit 214, a water shape adjustment unit 216, a display unit 220, and a discharge port 222. In the present embodiment, the operation unit 214 is a push button. The water guide 210 also functions as a grip. In the present embodiment, the display unit 220 is a side surface of the push button 214. Whether the raw water discharge state or the purified water discharge state can be determined from the appearance of the side surface, this side surface is also one mode of the display unit. The water shape adjusting unit 216 can change the shape (water shape) of the discharged water.

  The water discharge head 208 has a raw water flow path and a purified water flow path. When the raw water flow path is selected, the raw water is discharged from the discharge port 222. The state in which the raw water is discharged is also referred to as a raw water discharge state. When the purified water flow path is selected, purified water is discharged from the discharge port 222. The state in which purified water is discharged is also referred to as a purified water discharge state.

  The switching unit 212 has a switching mechanism that can switch between purified water and raw water by operating the operation unit 214. The details of this switching mechanism will be described later.

  FIG. 16 is a front view of the water discharge head 208. FIG. 17 is a sectional view taken along line AA of FIG. FIG. 18 is a sectional view taken along line AA of FIG.

  The operation unit 214 functions as a switching button. When switching the flow path, the operation unit 214 is pressed. Each time the operation unit 214 is pressed, switching between the raw water flow path and the purified water flow path is performed. In other words, each time the operation unit 14 is pressed, switching between the raw water discharge state and the purified water discharge state is performed. As in the first embodiment, this switching mechanism has an alternate operation type thrust lock mechanism. With this thrust lock, a push button operation of the operation unit 214 is realized. Each time the push operation is performed, the push button 214 shifts between the pop-out position and the push-in position.

  In the present embodiment, the raw water discharge position is the pop-out position. In the present embodiment, the purified water discharge position is the push-in position.

  By pressing, the push button 214 moves backward. The projecting position is ahead of the pushed-in position. In the mutual movement between the pop-out position and the pushing position, the maximum pushing position is passed. The maximum pushing position is behind the pushing position. When the push button 214 at the pop-out position is pressed, it stops at the pushed-in position via the maximum pushed-in position. Even if the operation is released, the pressed position is maintained. When the push button 214 at the pushed-in position is pushed, it stops at the pop-out position via the maximum pushed-in position. Even when the operation is canceled, the pop-out position is maintained.

  15 to 18, the push button 214 is at the protruding position. In the water discharge head 208, when the push button 214 is at the protruding position, the raw water flow path is selected. In the water discharge head 208, when the push button 214 is at the protruding position, the raw water is discharged.

  19 and 20 are cross-sectional views of the water discharge head 208 when the push button 214 is at the pressed position. The sectional position of FIG. 19 is the same as that of FIG. FIG. 20 is a sectional view taken along line AA of FIG.

  In the water discharge head 208, when the push button 214 is at the pressed position, the purified water flow path is selected. In the water discharge head 208, when the push button 214 is at the pressed position, purified water is discharged.

  FIG. 21 is an exploded perspective view of the water discharge head 208.

  As shown in FIG. 21, the water discharge head 208 has a water purification cartridge PC1. This water purification cartridge PC1 is the same as that used in the first embodiment. The above-described water guide unit (grip unit) 210 includes an outer tube 224 and a water purification cartridge PC1 disposed inside the outer tube 224.

  As shown in FIGS. 17 to 20, a raw water flow path WG is formed outside the water purification cartridge PC1, and a purified water flow path WJ is formed inside the water purification cartridge PC1. When in the raw water discharge state, the raw water that has passed through the raw water flow path WG is discharged from the discharge port 222 via the switching mechanism. On the other hand, when in the purified water discharge state, the raw water is purified by the function of the water purification function unit (transmission unit 26) of the purified water cartridge PC1 in the process of passing through the purified water cartridge PC1. The purified water is discharged from the discharge port 222 via the purified water flow path WJ inside the purified water cartridge PC1 and the purified water flow path WJ inside the switching mechanism.

  The water discharge head 208 has a head main body 228, an upper head cover 230, and a lower head cover 232.

  The switching section 212 of the water discharge head 208 has a thrust lock mechanism 234. The thrust lock mechanism 234 is housed in the head main body 228. The thrust lock mechanism 234 includes a first switching frame 236, a second switching frame 238, a switching ring 240, a switching shaft 242, a coil spring 244, a switching cover 246, and an O-ring 248. The switching shaft 242 has a push rod 250, and a button holding part 252. The switching cover 246 has a rear bottom 256 and a slit 258. The switching ring 240 is fixed to the front side of the switching cover 246. The switching shaft 242 is guided by the slit 258 and moves in the front-back direction. The second switching frame 238 moves together with the switching shaft 242. In conjunction with the pressing operation of the operation unit 214, the second switching frame 238 and the switching shaft 242 move (reciprocate) in the front-rear direction. The coil spring 244 urges the switching cover 246 and the switching shaft 242 in a direction away from each other. The first switching frame 236 is rotated every time the button is pressed, and can be held at two different positions. As in the first embodiment, the thrust lock mechanism 234 implements an alternate operation.

  The water discharge head 208 has a water shape switching assembly 270. The water shape switching assembly 270 has the water shape adjustment unit 216 and the discharge port 222 described above. Further, the water type switching assembly 270 has a valve seat forming portion 280.

  The switching mechanism of the water discharge head 208 includes the above-described operation unit 214, a first valve V1, and a second valve V2. The water discharge is switched by opening and closing the two valves.

  The first valve V1 has a valve seat 301a, a first valve body 301b, a ball holder 301c, and an elastic body 301d. The first valve V1 is a ball valve. The first valve body 301b is a ball. The valve seat 301a is an opening edge of the circular hole. The valve seat 301a is formed in the valve seat forming part 280. The ball 301b is held by a ball holder 301c. The ball holder 301c is open downward. An elastic body 301d is arranged between the upper part of the ball holder 301c and the ball 301b. This elastic body 301d is a coil spring. The ball 301b is constantly urged toward the valve seat 301a by the elastic body 301d.

  The second valve V2 has a valve seat 302a (see FIGS. 19 and 20), a second valve body 302b, and a shaft body 302c. The second valve V2 is a shaft valve. The second valve body 302b is an O-ring. The valve seat 302a is a slope formed on the periphery of the opening of the flow path hole (see FIGS. 19 and 20). This slope is a rearward facing surface. The O-ring 302b is mounted on the shaft 302c. The shaft 302c is connected to the switching shaft 242 via the ball holder 301c. The shaft 302c moves in the front-rear direction together with the switching shaft 242. The switching shaft 242 is connected to the operation unit 214. The shaft 302c moves in the front-rear direction together with the operation unit 214 (push button).

  The shaft 302c has an interlocking contact part LC2. The interlocking contact part LC2 is a rear end of the shaft 302c. The interlocking contact portion LC2 moves in the front-back direction with the operation of the operation unit 214.

  The end of the push rod 250 of the switching shaft 242 is connected to the ball holder 301c (see FIGS. 18 and 20). The ball holder 301c moves in the front-rear direction together with the switching shaft 242. The ball holder 301c moves in the front-rear direction together with the operation unit 214.

  When the operation unit 214 is at the protruding position, the center of the ball 301b is displaced from the center of the valve seat 301a, so that the first valve V1 is open. On the other hand, when the operation unit 214 is at the protruding position, the O-ring 302b mounted on the shaft 302c abuts on the valve seat 302a (see FIGS. 17 and 18). By this contact, the second valve V2 closes. In this state, raw water is discharged. The second valve V2 is a water purification valve that closes the water purification flow path.

  When the operation unit 214 is at the pushed-in position, the ball 301b fits into the valve seat 301a, and the first valve V1 closes. At this time, the O-ring 302b attached to the shaft 302c is separated from the valve seat 302a (see FIGS. 19 and 20). In this state, purified water is discharged. The first valve V1 is a raw water valve that closes a raw water flow path.

  As shown in an enlarged manner in FIG. 21, the water discharge head 208 has a regulating member RG2. The regulating member RG2 plays a role of regulating switching to the purified water discharge state when the purified water cartridge PC1 is not mounted.

  As shown in an enlarged manner in FIG. 21, the water discharge head 208 has a biasing member 304. The urging member 304 urges the regulating member RG2 such that the regulating member RG2 is in the first state. In the present embodiment, the biasing member 304 is a torsion spring (a torsion coil spring).

  17 and 18, the operation unit 214 is at the protruding position. When the operation unit 214 is at the protruding position, the water discharge head 208 is in a raw water discharge state. 19 and 20, the operation unit 214 is in the pushed-in position. When the operation unit 214 is at the pushed-in position, the water discharge head 208 is in a purified water discharge state. In each of these drawings, the water purification cartridge PC1 is attached to the water discharge head 208 (at a regular position). The water purification cartridge PC1 is mounted on the cartridge mounting section. In the water discharge head 208, the cartridge mounting portion is a portion that extends from the inside of the outer cylinder 224 to the inside of the head main body 228. The water purification cartridge PC1 can exhibit its function (generation of purified water) by being mounted on (the regular position of) the cartridge mounting portion.

  FIGS. 22 (a), 22 (b), 23 (a) and 23 (b) are cross-sectional views in an unmounted state. In FIG. 22A and FIG. 23A, the operation unit 214 is at the protruding position. In FIGS. 22B and 23B, the operation unit 214 is at the switching restriction position. 22 (b) and FIG. 23 (b), the water discharge head 208 is in the switching restricted state. The switching restriction state means a state in which the movement of the interlocking contact part LC2 is restricted by the contact of the interlocking contact part LC2 with the regulating member RG2.

  FIG. 24A is an enlarged cross-sectional view of a part of FIG. FIG. 24B is an enlarged cross-sectional view of a part of FIG. FIGS. 24A and 24B are cross-sectional views of the mounted state. In FIG. 24A, the operation unit 214 is at the protruding position. In FIG. 24B, the operation unit 214 is at the pushed position.

  The state of the regulating member RG2 is different between the mounted state and the non-mounted state. In the unmounted state shown in FIGS. 22A, 22B, 23A, and 23B, the regulating member RG2 is in the first state J1. In the mounted state shown in FIGS. 24A and 24B, the regulating member RG2 is in the second state J2.

  In the present embodiment, the difference in the state of the regulating member RG2 is a difference in the posture of the regulating member RG2. The regulating member RG2 is urged by the urging member 304 so as to be in the first posture. For this reason, in the unmounted state, the regulating member RG2 is in the first posture (see FIG. 22A). In the mounted state, the regulating member RG1 is in the second posture (see FIG. 24A). This difference in posture is achieved by rotation. By mounting the water purification cartridge PC1 on the cartridge mounting portion, the end surface EF1 of the water purification cartridge PC1 comes into contact with the regulating member RG2, and the regulating member RG2 rotates. With this rotation, the regulating member RG2 shifts from the first state J1 (first posture) to the second state J2 (second posture).

  As shown in FIG. 24A, when the water purification cartridge PC1 is mounted, the regulating member RG2 is in the second state J2, and the operation unit 214 is at the raw water discharge position, the interlocking contact part LC2 (of the shaft 302c) The rear end) does not come into contact with the regulating member RG2.

  As shown in FIG. 24B, when the water purification cartridge PC1 is mounted, the regulating member RG2 is in the second state J2, and the operation unit 214 is at the purified water discharge position, the interlocking contact portion LC2 is moved to the regulating member RG2. Can abut. However, the regulating member RG2 in the second state J2 is not in a state where the backward movement of the interlocking contact portion LC2 (the rear end of the shaft body 302c) can be prevented. At this time, although the regulating member RG2 is pushed (slightly) rotated by the interlocking contact portion LC2 (the rear end of the shaft body 302c), it inhibits the rearward movement of the interlocking contact portion LC2 (shaft body 302c). do not do. Therefore, when the regulating member RG2 is in the second state J2, switching from raw water to purified water is not regulated by the regulating member RG2. When the regulating member RG2 is in the second state J2, the transition from the raw water discharge state to the purified water discharge state is achieved.

  On the other hand, when the water purification cartridge PC1 is not mounted and the regulating member RG2 is in the first state J1, the interlocking contact portion LC2 (the rear end of the shaft 302c) is regulated in the process of switching from raw water to purified water. It comes into contact with the member RG2 (see FIGS. 22B and 23B). When the operating section 214 is pushed in from the protruding position, the interlocking contact section LC2 comes into contact with the regulating member RG2 before the operating section 214 reaches the pushed-in position. Due to this contact, the operation unit 214 cannot be pushed further. The regulating member RG2 in the first state J1 is in a state (posture) in which the operation force transmitted from the operation section 214 to the interlocking contact section LC2 (the shaft body 302c) can be received. As shown in FIG. 23B, when a part of the regulating member RG2 enters into the concave portion r1 provided on the rear end surface of the shaft 302c, the regulating member RG2 stabilizes the shaft 302c (the interlocking contact portion LC2). I support it.

  As described above, when the regulating member RG2 is in the first state J1, switching from raw water to purified water is regulated by the regulating member RG2. When the regulating member RG2 is in the first state J1, the transition from the raw water discharge state to the purified water discharge state is restricted. When the regulating member RG2 is in the first state J1, the operation unit 214 cannot be moved from the raw water discharge position to the purified water discharge position.

  24 (a) and FIG. 24 (b), the posture of the regulating member RG2 is different, but both restrict the movement of the interlocking contact portion LC2 (the operation portion 214) to the purified water discharge position. Since the postures cannot be performed, all are in the second state J2.

  FIG. 25A is a perspective view of the regulating member RG2. FIG. 25B is a plan view of the regulating member RG2. FIG. 25C is a side view of the regulating member RG2.

  The restricting member RG2 has a shaft portion 310, a restriction releasing contact portion 312, and a switching restricting portion 314. The shaft 310 is a rotation shaft of the regulating member RG2. The restriction release contact part 312 is located on one side of the shaft part 310, and the switching restriction part 314 is located on the other side of the shaft part 310. In the first state J1 (see FIGS. 22A and 23B), the regulation release contact portion 312 is located on the upstream side (rearward) of the shaft portion 310, and the switching restriction portion 314 is located downstream of the shaft portion 310. Side (front).

  As the restriction release contact part 312, a first restriction release contact part 312a and a second restriction release contact part 312b are provided. The first regulation release contact portion 312a is an end of a protruding portion 318 that protrudes from the first position of the shaft portion 310. The second restriction release contact part 312b is an end of the protruding part 320 protruding from the second position of the shaft part 310.

  Further, the regulating member RG2 has a first state holding portion 316. The first state holding portion 316 holds the regulating member RG2 in the first state J1 by abutting on the adjacent portion by the urging force of the urging member 304.

  The switching restricting portion 314 is provided at an end of the protruding extending portion 322 extending from the shaft portion 310. The switching restricting portion 314 has a protrusion 324 and support portions 326 provided on both left and right sides of the protrusion 324. When the regulating member RG2 prevents the movement of the interlocking contact portion LC2 (the shaft body 302c), the protrusion 324 enters the above-mentioned convex portion r1 of the shaft body 302c, and the right and left support portions 326 contact the rear end face of the shaft body 302c. (See FIG. 23B). Therefore, the regulating member RG2 stably comes into contact with the rear end of the shaft 302c, and the movement of the shaft 302c is reliably regulated.

[Third embodiment]
FIG. 26 is a perspective view of a faucet device 400 according to the third embodiment. The faucet device 400 is attached to a sink (not shown). In FIG. 26, a portion that is not visually recognized, that is, a portion inside the sink is not illustrated.

  The faucet device 400 has a main body 404, a lever handle 406, and a water discharge head 408. The faucet device 400 is a so-called single lever type faucet. The temperature of the spout can be adjusted by turning the lever handle 406 left and right. The amount of water discharged can be adjusted by turning the lever handle 406 up and down. Inside the main body 404, a valve mechanism that allows adjustment of the temperature and the amount of water discharged is incorporated. Although not shown, the faucet device having the faucet device 400 has a hot water introduction pipe and a water introduction pipe.

  The water discharge head 408 has a water guide unit 410, a switching unit 412, an operation unit 414, a water shape adjustment unit 416, a display unit 420, and a discharge port 422. In the present embodiment, the operation unit 414 is a dial. By switching the operation unit 414, it is possible to switch between raw water and purified water. In the present application, the water discharge head 408 is also called a dial type. This dial type water discharge head is known.

  In the present embodiment, the display unit 420 is a display window. From the display in the display window, it can be determined whether the raw water is discharged or the purified water is discharged. The water shape adjusting unit 416 can change the shape (water shape) of the discharged water.

  The water discharge head 408 has a raw water flow path and a purified water flow path. When the raw water flow path is selected, the raw water is discharged from the discharge port 422. When the purified water flow path is selected, purified water is discharged from the discharge port 422.

  The switching unit 412 has a switching mechanism that can switch between purified water and raw water by operating the operation unit 414 (rotating operation). The details of this switching mechanism will be described later.

  FIGS. 27A, 27B, and 27C are front views of the water discharge head 408. FIG. FIG. 27A is a front view in a raw water discharge state. FIG. 27B is a front view in the switching restricted state. FIG. 27C is a front view in a purified water discharge state.

  FIG. 28 is a sectional view taken along line AA of FIG. FIG. 28 is a cross-sectional view in a raw water discharge state. FIG. 29 is a cross-sectional view taken along the line AA of FIG. FIG. 29 is a cross-sectional view in a purified water discharge state.

  The operation unit 414 functions as a switching dial. When switching the flow path, the operation unit 414 is rotated. By switching the operation unit 414, switching between the raw water flow path and the purified water flow path is performed. In the raw water discharge state, the operation unit 414 is at the first rotation position (see FIG. 27A). In the purified water discharge state, the operation unit 414 is in the second rotation position (see FIG. 27C). In the present embodiment, the angle θ between the first rotation position and the second rotation position is 90 °. In the present embodiment, switching between the raw water discharge state and the purified water discharge state is performed by rotating the operation unit 414 by the angle θ (90 °).

  The water discharge head 408 includes a cam mechanism 430 that can convert the rotation of the operation unit 414 into a forward-backward movement, and a shaft 432 that moves in the forward-backward direction by the cam mechanism 430. As FIG. 29 shows well, the shaft 432 has a shaft 432a, a disk 432b, a rear inlet 432c, a main flow path 432d, and a branch flow path 432e. Further, the shaft body 432 has an interlocking contact part LC3. The interlocking contact portion LC3 is a rear end surface of the shaft member 432.

  The disk portion 432b has a purified water outlet 432f and a raw water outlet 432g. The branch flow path 432e connects the main flow path 432d and the purified water outlet 432f. The main flow path 432d is opened rearward by the rear inlet 432c. The purified water outlet 432f is provided at one location in the circumferential direction of the disk portion 432b. The raw water outlet 432g is provided at one location in the circumferential direction of the disk portion 432b. The circumferential position of the purified water outlet 432f is different from the circumferential position of the raw water outlet 432g.

  On the other hand, the adjacent portion adjacent to the shaft body 432 has a support hole 440 that supports the shaft body 432 movably in the front-rear direction, a disk facing portion 442, and a flow path hole 444. This adjacent portion is fixed regardless of the operation of the operation unit 414.

  By the cam mechanism 430, the shaft body 432 moves back and forth with the rotation of the operation unit 414. When the operation unit 414 is at the raw water discharge position and the purified water discharge position, the disk 432 b of the shaft 432 is in contact with the disk facing unit 442. The position of the shaft 432 at this time is also referred to as a reference position below. When the operation unit 414 is located between the raw water discharge position and the purified water discharge position, the disk unit 432b moves away from the disk facing unit 442. That is, when the operation unit 414 is located between the raw water discharge position and the purified water discharge position, the shaft 432 is located behind the reference position.

  The shaft 432 rotates integrally with the operation unit 414. That is, the shaft body 432 rotates with the operation unit 414 while moving back and forth with the rotation of the operation unit 414.

  In the purified water discharge state, the purified water outlet 432f of the shaft 432 overlaps the flow path hole 444 (see FIG. 29). At this time, the raw water outlet 432g is closed by the disk facing portion 442. As a result, the purified water that has passed through the purified water flow path WJ inside the purified water cartridge PC1 is discharged from the discharge port 422 via the main flow path 432d, the purified water outlet 432f, and the flow path hole 444.

  In the raw water discharge state, the raw water outlet 432g of the shaft 432 overlaps the flow path hole 444 (see FIG. 28). At this time, the purified water outlet 432f is closed by the disk facing portion 442. As a result, the purified water that has passed through the purified water flow path WJ inside the purified water cartridge PC1 is stopped, and the raw water that has passed through the raw water flow path WG outside the purified water cartridge PC1 passes through the raw water outlet 432g and the flow path hole 444. And is discharged from the discharge port 422.

  As described above, the switching mechanism of the third embodiment is a discharge port selection mechanism that uses the disk portion that rotates with the operation portion (dial) and the opposed disk portion. By adding the above-described cam mechanism to the discharge port selection mechanism, the disk portion and the opposed disk portion can be separated from each other between the raw water discharge state and the purified water discharge position. This separation prevents the disadvantage that both the raw water and the purified water are stopped and a high water pressure acts.

  As shown in FIGS. 28 and 29, the water discharge head 408 has a regulating member RG3. The regulating member RG3 plays a role of regulating switching to the purified water discharge state when the purified water cartridge PC1 is not mounted.

  Although not shown, the water discharge head 408 has an urging member. This urging member urges the regulating member RG3 such that the regulating member RG3 is in the first state.

  As shown in FIGS. 28 and 29, in the mounted state, the regulating member RG3 is in the second state J2. In this second state J2, the regulating member RG3 does not prevent the shaft 432 from moving in the front-rear direction. Even when the shaft 432 is moved rearmost, the front end of the regulating member RG3 in the second state J2 enters the main flow path 432d from the rear inlet 432c, so that the movement of the shaft 432 is reduced. Does not hinder (see FIG. 29). As a result, the transition from the raw water discharge state to the purified water discharge state is achieved.

  FIGS. 30A and 30B are cross-sectional views in a non-mounted state. In FIG. 30A, the operation unit 414 is at the raw water discharge position. In FIG. 30B, the operation unit 414 is at the switching restriction position. As described above, the switching restriction position is a position between the raw water discharge position and the purified water discharge position, and is a position at which the operation of the operation unit 414 toward the purified water discharge state is restricted.

  FIG. 27B shows the operation unit 414 at the switching restriction position. FIG. 27A shows the operation unit 414 at the raw water discharge position, and FIG. 27C shows the operation unit 414 at the purified water discharge position. As described above, the raw water discharge position, the purified water discharge position, and the switching restriction position are concepts that include the rotational position in the circumferential direction.

  As shown in FIG. 30A, in the unmounted state, the regulating member RG3 is in the first state J1. On the other hand, as described above, in the mounted state, the regulating member RG3 is in the second state J2 (see FIGS. 28 and 29).

  In the present embodiment, the difference in the state of the regulating member RG3 is the difference in the posture of the regulating member RG3. This difference in posture is achieved by rotation. By mounting the water purification cartridge PC1 on the cartridge mounting portion, the end surface EF1 of the water purification cartridge PC1 comes into contact with the regulating member RG3, and the regulating member RG3 rotates. By this rotation, the regulating member RG3 shifts from the first state J1 (first posture) to the second state J2 (second posture).

  When the water purification cartridge PC1 is not mounted and the regulating member RG3 is in the first state J1, in the process of switching from the raw water to the purified water, the interlocking contact portion LC3 (the rear end face of the shaft member 432) is connected to the regulating member RG2. It comes into contact with the switching restricting portion (see FIG. 30B). When the operation unit 414 is rotated from the raw water discharge position, before the operation unit 414 reaches the purified water discharge position, the interlocking contact portion LC3 contacts the switching restricting portion 460 of the restricting member RG3. The switching restricting portion 460 is a front end of the restricting member RG3 in the first state J1. Due to this contact, the operation unit 414 cannot be further rotated to the purified water discharge position side.

  The regulating member RG3 in the first state J1 is in a state (posture) in which the operation force transmitted from the operation section 414 to the interlocking contact section LC3 (the shaft member 432) can be received. As shown in FIG. 30 (b), the distal end of the regulating member RG3 is locked at a corner formed by the rear end surface LC3 of the shaft member 432 and the inner peripheral surface 450 of the adjacent portion, so that the regulating member RG3 Supports the rear end surface of the shaft member 432 stably without rotating.

  Thus, when the regulating member RG3 is in the first state J1, the switching from the raw water to the purified water is regulated by the regulating member RG3. When the regulating member RG3 is in the first state J1, the transition from the raw water discharge state to the purified water discharge state is restricted. When the regulating member RG3 is in the first state J1, the operation unit 414 cannot be rotated from the raw water discharge position to the purified water discharge position.

[Fourth embodiment]
FIG. 31 is a perspective view of a faucet device 600 according to the fourth embodiment. The faucet device 600 is attached to a sink (not shown). In FIG. 31, a portion that is not visually recognized, that is, a portion inside the sink is not illustrated.

  The faucet device 600 has a main body 604, a lever handle 606, and a water discharge head 608. The faucet device 600 is a so-called single lever type faucet. The temperature of the spout can be adjusted by turning the lever handle 606 left and right. The amount of water discharged can be adjusted by turning the lever handle 606 up and down. Inside the main body 604, a valve mechanism that allows adjustment of the temperature and the amount of the discharged water is incorporated. Although not shown, the faucet device having the faucet device 600 has a hot water introduction pipe and a water introduction pipe.

  The water discharge head 608 includes a water guide 610, a switching unit 612, an operation unit 614, a water shape adjustment unit 616, a display unit 620, and a discharge port 622. In the present embodiment, the operation unit 614 is a lever. By operating (rotating) the operation unit 614, switching between raw water and purified water is possible. In the present application, the water discharge head 608 is also referred to as a lever type. Further, since the lever 614 is located beside the switching unit 612, the water discharge head 608 is also called a horizontal lever type. This lateral lever type water discharge head is known.

  In the present embodiment, the display unit 620 is a display window. From the display in the display window, it can be determined whether the raw water is discharged or the purified water is discharged. The water shape adjustment unit 616 has a water shape adjustment lever 618. By operating the water shape adjustment lever 618, the shape (water shape) of the discharged water can be changed.

  The water discharge head 608 has a raw water flow path and a purified water flow path. When the raw water flow path is selected, the raw water is discharged from the discharge port 622. When the purified water flow path is selected, the purified water is discharged from the discharge port 622.

  The switching unit 612 has a switching mechanism that can switch between purified water and raw water by operating the operation unit 614 (rotating the horizontal lever). The details of this switching mechanism will be described later.

  FIGS. 32A and 32B are side views showing a part of the water discharge head 608. FIG. FIG. 32A is a side view in a raw water discharge state. FIG. 32B is a side view in a purified water discharge state. Note that in FIGS. 32A and 32B and FIGS. 33 and 34 to be described later, illustration of a cover that covers the switching unit 612 and the water shape adjustment unit 616 is omitted.

  The operation unit 614 functions as a switching lever. When switching the flow path, the operation unit 614 is rotated. By switching the operation unit 614, switching between the raw water flow path and the purified water flow path is performed. In the raw water discharge state, the operation unit 614 is in the first rotation position (see FIG. 32A). In the purified water discharge state, the operation unit 614 is at the second rotation position (see FIG. 32B). In the present embodiment, the angle θ between the first rotation position and the second rotation position is 90 °. By rotating the operation unit 614 by an angle θ (90 °), switching between the raw water discharge state and the purified water discharge state is performed.

  FIG. 33 is a sectional view of the water discharge head 608 in the raw water discharge state. FIG. 34 is a cross-sectional view of the water discharge head 608 in the purified water discharge state.

  The switching mechanism of the water discharge head 608 has a rotating unit 630 that rotates together with the operation unit 614. The rotating part 630 is cylindrical as a whole. The inside of the rotating part 630 is hollow. The rotating part 630 has a flow path hole 632 penetrating between the outer surface and the inner surface. Further, the rotating part 630 has a convex part p4 and a concave part r4 adjacent to the convex part p4. As shown in FIGS. 33 and 34, the rotating portion 630 has a double structure portion having an outer layer and an inner layer, and an outer layer removing portion in which a part of the outer layer in the double structure portion is removed is provided. Thereby, the concave portion r4 is formed. Further, in a portion corresponding to the outer layer removing portion, a projection is formed on the outer surface of the inner layer portion, and the projection is a projection p4.

  The adjacent portion adjacent to the rotating portion 630 has a water purification port 634 for discharging purified water that has passed through the inside of the water purification cartridge PC1 toward the rotating portion 630.

  In the raw water discharge state, the flow path hole 632 does not overlap the water purification port 634, and the water purification port 634 is closed by the rotating unit 630 (see FIG. 33). At this time, the flow path hole 632 communicates with the raw water flow path WG. For this reason, the purified water is stopped, and the raw water flows into the inside of the rotating part 630 from the flow path hole 632 and is discharged from the discharge port 622.

  In the purified water discharge state, the flow path hole 632 overlaps the purified water port 634 (see FIG. 34). At this time, the flow path hole 632 does not communicate with the raw water flow path WG. Therefore, the raw water is stopped, the purified water flows into the inside of the rotating part 630 from the flow path hole 632, and is discharged from the discharge port 622.

  The rotating part 630 has an interlocking contact part LC4. The interlocking contact portion LC4 is the above-mentioned convex portion p4.

  As shown in FIGS. 33 and 34, the water discharge head 608 has a regulating member RG4. The regulating member RG3 plays a role of regulating switching to the purified water discharge state when the purified water cartridge PC1 is not mounted.

  Although not shown, the water discharge head 608 has a biasing member. This urging member urges the regulating member RG4 such that the regulating member RG4 is in the first state.

  As shown in FIGS. 33 and 34, in the mounted state, the regulating member RG4 is in the second state J2. In the second state J2, the regulating member RG4 does not hinder the movement (rotation) of the rotating portion 630. In the second state J2, (the front end of) the regulating member RG4 is at a position away from the rotating unit 630. Therefore, the regulating member RG4 does not affect the rotation of the rotating unit 630. As a result, the transition from the raw water discharge state to the purified water discharge state is achieved.

  FIG. 35A and FIG. 35B are cross-sectional views in an unmounted state. In FIG. 35A, the operation unit 614 is at the raw water discharge position. In FIG. 35B, the operation unit 614 is at the switching restriction position.

  As shown in FIG. 35A, in the unmounted state, the regulating member RG4 is in the first state J1. On the other hand, as described above, in the mounted state, the regulating member RG4 is in the second state J2 (see FIGS. 33 and 34).

  In the present embodiment, the difference in the state of the regulating member RG4 is the difference in the posture of the regulating member RG4. This difference in posture is achieved by rotation. By mounting the water purification cartridge PC1 on the cartridge mounting portion, the end surface EF1 of the water purification cartridge PC1 comes into contact with the regulating member RG4, and the regulating member RG4 rotates. By this rotation, the regulating member RG4 shifts from the first state J1 (first posture) to the second state J2 (second posture). This rotation is such that the front end of the regulating member RG4 is raised.

  In the unmounted state, when the regulating member RG4 is in the first state J1 and in the raw water discharge state, the front end of the regulating member RG4 enters the concave portion r4 (FIG. 35A). When the operation unit 614 is rotated to the purified water discharge position from this state, the switching restricting unit 660 of the restricting member RG4 comes into contact with the convex part p4 (the interlocking contact part LC4). As shown in FIG. 35B, the switching restricting portion 660 of the restricting member RG4 is in a state of being sandwiched between the convex portion p4 and the adjacent portion. Therefore, the operation unit 614 cannot be further rotated to the purified water discharge position side. The switching restricting portion 660 is a front end of the restricting member RG4 in the first state J1.

  The regulating member RG4 that is in the first state J1 and is in contact with the protrusion p4 is in a state where it can receive the operation force transmitted from the operation unit 614 to the interlocking contact part LC4 (the protrusion p4). As described above, since the switching restricting portion 660 of the restricting member RG4 is sandwiched between the convex portion p4 and the adjacent portion, the restricting member RG4 can stably support the convex portion p4 without rotating.

  As described above, when the regulating member RG4 is in the first state J1, the switching from the raw water to the purified water is regulated by the regulating member RG4. When the regulating member RG4 is in the first state J1, the transition from the raw water discharge state to the purified water discharge state is restricted. When the regulating member RG4 is in the first state J1, the operation unit 614 cannot be rotated from the raw water discharge position to the purified water discharge position.

[First to Fourth Embodiments]
As described above, each of the above-described embodiments has the switching mechanism that can switch between the discharged water from the discharge port and the purified water, the regulating member, and the purified water cartridge. The restricting member is capable of transition between the first state J1 and the second state J2.

  In each of the above embodiments, the transition between the first state J1 and the second state J2 is achieved by the rotation of the regulating member. The method of this transition is not limited to the rotation of the regulating member. In addition to rotation, movement (parallel movement), movement accompanied by rotation, and the like are exemplified. The state change between the first state J1 and the second state J2 is not limited, as long as the purpose of the first state J1 and the second state J2 is achieved. That is, in the first state J1, the switching from the raw water to the purified water by the switching mechanism may be restricted, and in the second state J2, the switching from the raw water to the purified water by the switching mechanism may be permitted.

  The water purification cartridge PC1 has a regulation release section for shifting the regulation member from the first state J1 to the second state J2. In each of the above-described embodiments, the restriction release portion is the downstream end surface EF1 of the water purification cartridge PC1. This restriction release part is not limited to the end face EF1. Any part of the water purification cartridge PC1 can be a regulation release part. In each of the embodiments described above, the regulation release section of the water purification cartridge PC1 is in direct contact with the regulation member. From the viewpoint of direct contact with the restricting member, the restriction releasing portion is preferably (any part of) the connection end 140, and more preferably the end surface EF1. However, the restriction release section does not need to directly contact the restriction member, and in this case, the degree of freedom in setting the position of the restriction release section is further increased.

The following configurations (a) and (b) include, for example, examples in which the regulation release section does not directly contact the regulation member.
(A) The water discharge head has a link portion connected to the regulation member, and the regulation release portion abuts on this link portion. When the regulation release section contacts the link section, the state of the link section changes, and the state of the regulation member shifts from the first state J1 to the second state J2 in conjunction with the link section.
(B) The water discharge head has a detection unit that can detect the presence of the regulation release unit and a drive unit that can drive the regulation member. When the regulation release section is detected by the detection section, the regulation section is driven by the drive section, and the state of the regulation member shifts from the first state J1 to the second state J2.

  The link portion (a) may be in the form of, for example, a push button (projection). The detection unit of (b) may detect the restriction release unit electrically or magnetically, for example.

  Each of the above embodiments has an urging member for urging the regulating member to the first state J1. With this urging member, the regulating member can be reliably set to the first state J1 in the unmounted state. This urging member may not be provided. It is sufficient that the regulating member is in the first state J1 in the unmounted state. For example, the regulating member may be in the first state J1 by gravity acting on the regulating member.

  The restricting member has a switching restricting portion that is in the first position in the first state J1 and is in the second position in the second state J2. In each of the above-described embodiments, the front end (the end on the operation unit side) of the regulating member in the first state J1 is the switching regulating unit. The position of the switching restricting portion in the restricting member is not limited.

  In each of the above-described embodiments, the first position and the second position of the switching restricting unit are caused by a difference in posture of the restricting member.

  FIG. 36 is a side view showing rotation of the regulating member RG1 according to the first embodiment. As the restricting member rotates around the rotation center line Z1, the switching restriction unit 114 moves on a circumference centered on the rotation center line Z1. With this movement, the position of the switching restricting section 114 changes. The position of the switching restricting unit 114 in the first state J1 is the first position PS1. The position of the switching restricting portion 114 in the second state J2 is the second position PS2.

  As described above, the method of reciprocal transition between the first state J1 and the second state J2 is not limited to the rotation of the regulating member, but may be the movement of the regulating member (parallel movement or the like). For example, the regulating member may slide. Therefore, the difference between the first position PS1 and the second position PS2 is not limited to the difference on a single arc.

  In the process of switching from raw water to purified water by the switching mechanism, the switching restricting unit 114 at the first position PS1 abuts on the interlocking contact part LC1 that is interlocked with the switching mechanism. Note that, in a single embodiment, the first position PS1 may be at one location or at multiple locations.

  As described above, the regulating member RG1 according to the first embodiment has the first state holding unit 116. The first state holding unit 116 holds the regulating member RG1 in the first state J1 by contacting the adjacent portion AJ1 by the urging force of the urging member 104. Further, the first state holding unit 116 abuts on the adjacent part AJ1, so that the first state J1 is stably maintained even when the switching restricting unit 114 is pressed by the interlocking abutting part LC1. Therefore, switching to the purified water discharge state is reliably prevented (see FIG. 36). The adjacent portion AJ1 is a portion adjacent to the regulating member RG1.

  The regulating member RG1 is urged by the urging member 104 in the first rotation direction from the second state J2 to the first state J1. The contact force from the interlocking contact portion LC1 acts in a direction to rotate the regulating member RG1 in the first rotation direction, but this rotation is prevented by the contact between the first state holding portion 116 and the adjacent member AJ1. I have. On the other hand, by being in contact with the regulation release section DR1 of the water purification cartridge PC1, the regulation member RG1 rotates in the second rotation direction from the first state J1 to the second state J2. In the regulation member RG1 in the second state J2, the pressing force of the regulation release unit DR1 and the urging force of the urging member 104 are balanced. Therefore, the second state J2 is stably maintained. Then, as described above, the urging force of the urging member 104 allows the restricting member RG1 to exert a removal support effect.

  The members constituting the interlocking contact portion are not limited. The interlocking contact portion is interlocked with the switching mechanism. The interlocking contact part is interlocked with the operation part. The interlocking contact part may be a member included in the switching mechanism or a member not included in the switching mechanism. By restricting the movement of the interlocking contact portion to the purified water discharge state side, the operation of the operation unit to the purified water discharge state side is restricted.

  The switching restricting portion 114 at the second position PS2 does not abut on the interlocking abutting portion LC1 in the process of switching from raw water to purified water by the switching mechanism. Note that, in a single embodiment, the second position PS2 may be at one location or at multiple locations.

  From the viewpoint that the transition between the first state J1 and the second state J2 can be achieved by a simple structure, it is preferable that the restricting member is rotatably fixed. It is preferable that mutual rotation between the first state J1 and the second state J2 is achieved by the rotation of the regulating member.

  As described above, in each embodiment, the regulation release section of the water purification cartridge PC1 is the downstream end surface EF1. When the water purification cartridge PC1 is mounted at the regular position, the regulation release section shifts the regulation member from the first state J1 to the second state J2.

  As shown in FIGS. 14A and 14C, the restriction release portion DR1 (end surface EF1) is an annular surface. The regulation release part DR1 is a surface along the circumferential direction of the water purification cartridge PC1. The regulation release section DR1 is an annular surface coaxial with the water purification cartridge PC1. The restriction release section DR1 is a flat surface. The restriction release part DR1 is along a plane perpendicular to the center line of the water purification cartridge PC1.

  Due to manufacturing errors, the entire length of the water purification cartridge PC1 varies. Due to this variation, variation occurs in the axial position of the restriction release portion DR1 (end surface EF1) in the mounted state. This axial direction means the axial direction of the water purification cartridge PC1.

  If the axial position of the restriction release section DR1 is shifted, contact between the restriction release section DR1 and the restriction release contact section of the restriction member RG1 may be hindered. However, since the restriction release portions DR1 are annularly distributed, even if the axial position of the restriction release portion DR1 is shifted, the contact between the restriction release portion DR1 and the restriction member RG1 is easily maintained. In other words, even if the attitude (angle) of the regulating member RG1 is slightly changed, the contact between the regulation releasing portion DR1 and the regulating member RG1 is easily maintained. Therefore, the second state J2 is reliably achieved.

  In the second state J2, the regulating member RG1 is in contact with the regulation releasing section DR1 at two places. The first position is a contact by the restriction release contact portion 118 (first restriction release contact surface 112a), and the second position is a contact by the restriction release contact portion 120 (second restriction release contact surface 112b). (See FIG. 12B). Therefore, the stability and reliability of the contact are enhanced, and the second state J2 is reliably maintained.

  FIG. 37 is an enlarged cross-sectional view of the water discharge head 8 of the first embodiment. FIG. 37 is a cross-sectional view in the vicinity of the downstream end of the water purification cartridge PC1.

  As described above, the water purification cartridge PC1 has the connection end 140. The water purification cartridge mounting portion of the water discharge head 8 has an insertion portion 800 into which the connection end 140 is inserted. The insertion portion 800 means a portion adjacent to the connection end portion 140 on the outside in the radial direction. This radial direction means the radial direction of the water purification cartridge PC1. In the embodiment of FIG. 37, the insertion section 800 is configured by a plurality of members.

  The connection end portion 140 has a gap forming portion 802 that forms a gap gp1 with the insertion portion 800. The gap forming portion 802 forms a downstream end of the connection end 140. The gap forming portion 802 forms a downstream end of the first cylindrical portion 150 (see FIG. 14). The gap gp1 is located radially outside the gap forming portion 802. This radial direction means the radial direction of the water purification cartridge PC1. The gap gp1 exists over the entire circumference of the gap forming portion 802. The end face of the gap forming portion 802 is the above-described end face EF1. The end surface of the gap forming portion 802 is the restriction release portion DR1.

  The end face EF1 is a circumferentially continuous end face that is continuous over the entire circumferential direction (360 °) of the water purification cartridge PC1. The circumferential continuous end face EF1 extends in a direction perpendicular to the axial direction. With this configuration, it is possible to satisfactorily abut and operate the regulating member RG1 without performing circumferential alignment between the water purification cartridge PC1 and the insertion portion 800 of the water discharge head 8. In other words, even if the water purification cartridge PC1 is mounted on the water discharge head 8 in any circumferential positional relationship, the regulating member RG1 can be satisfactorily contacted and operated. The end surface EF1 is preferably a surface that continuously extends in a direction perpendicular to the axial direction. However, the end surface EF1 can be satisfactorily brought into contact with the regulating member RG1 even if it is mounted on the water discharge head 8 in any circumferential positional relationship. Within a range in which it can be operated, a form including a concave portion or the like in the middle can also be adopted.

  The end surface EF1 is preferably a surface, and the surface is preferably in contact with the regulating member RG1, but the end surface EF1 and the regulating member RG1 may be in contact with a line or a point. Specifically, contact between the ridge line of the end surface EF1 and the surface of the regulating portion RG1, contact between the end surface EF1 and the ridge line of the regulating portion RG1, contact between the end surface EF1 and a point of the regulating member RG1, and the like are possible. is there. The contact between the end surface EF1 and the regulating member RG1 may be a surface contact, a line contact, or a point contact.

  As described above, the connection end 140 has the O-ring 162 (see FIG. 14). The O-ring 162 is located between the insertion portion 800 and the connection end 140 and seals between them. With this seal, the connection end 140 can connect the purified water flow path WJ1 in the connection end 140 and the purified water flow path WJ2 downstream of the connection end 140 with high watertightness.

  As described above, the connection end 140 has the flange 160 (see FIG. 14). The flange 160 is provided entirely in the circumferential direction. The circumferential direction means the circumferential direction of the water purification cartridge PC1 (connection end 140). The flange 160 is an example of a wall disposed on the upstream side of the restriction release section DR1 (end surface EF1). The flange 160 is an example of a wall portion disposed between the O-ring 162 disposed upstream of the restriction release portion DR1 and the restriction release portion DR1. The wall 160 may not be provided entirely in the circumferential direction. The wall 160 does not have to support the O-ring 162. For example, the wall 160 may be provided independently at a position away from the O-ring.

  The O-ring 162 is arranged in the O-ring arrangement groove. The O-ring arrangement groove is a groove continuously connected to the circumference. The O-ring arrangement groove is a groove for arranging an O-ring provided on the upstream side of the wall 160. Here, the following E1, E2, and E3 are defined. E1 is the groove width of the O-ring arrangement groove. E2 is the maximum width of the O-ring when the O-ring is mounted on the O-ring arrangement groove and the water purification cartridge is not mounted on the cartridge mounting portion. E3 is the maximum width of the O-ring when the O-ring is mounted in the O-ring arrangement groove and the water purification cartridge is mounted on the cartridge mounting portion. E1, E2, and E3 are all axial widths of the water purification cartridge. E1 is preferably greater than E2. E1 is preferably larger than E3. Due to the size relationship, the O-ring easily moves slightly inside the O-ring arrangement groove when the water purification cartridge is attached to and detached from the cartridge attachment section, and the O-ring adheres to the O-ring arrangement groove and the cartridge attachment section. It becomes difficult. As a result, the attachment and detachability of the water purification cartridge to and from the cartridge attachment portion are improved.

  In the present embodiment, the O-ring 162 having a circular cross section is used, but an O-ring having an elliptical cross section may be used. The cross-sectional shape of the annular packing is not limited. For example, as the annular packing, a square packing having a square cross section, a U packing having a U cross section, a V packing having a V cross section, a Y packing having a Y cross section, an X packing having an X cross section, or the like can be used. In addition, an O-ring is preferable, and an O-ring having a circular cross section is particularly preferable in terms of overall suppression of adhesion between the water purification cartridge and the peripheral member and the annular packing and securing water tightness.

  In the present application, the radially outermost M1 of the regulation release section DR1 is defined. The radially outermost part M1 means a part located on the radially outermost side in the restriction release part DR1. In the embodiment of FIG. 37, the radially outermost M1 is the outer peripheral edge of the end face EF1. The radial direction means the radial direction of the water purification cartridge PC1 (connection end 140).

  In the present application, the radially outermost M2 of the wall 160 is defined. The radially outermost portion M2 means a portion located on the outermost side in the radial direction in the wall portion 160. In the embodiment of FIG. 37, the radially outermost M2 is the outer peripheral edge of the wall 160. The radial direction means the radial direction of the water purification cartridge PC1 (connection end 140).

  The radially outermost M1 of the restriction release part DR1 is located radially inward of the radially outermost M2.

  The restriction release part DR1 is a part that comes into contact with the restriction member RG1. If the regulation release section DR1 is damaged or the regulation release section DR1 is dented, inconvenience may occur in contact with the regulation member RG1. For example, the contact with the regulating member RG1 may be insufficient, or the rotation angle of the regulating member RG1 may change depending on the circumferential position (phase) of the water purification cartridge PC1. From this viewpoint, when the water purification cartridge PC1 is mounted, it is preferable that collision between the restriction release unit DR1 and other members be avoided. In other words, it is preferable that the regulation release section DR1 has excellent collision avoidance.

  However, in reality, a collision between the regulation release part DR1 and another member is likely to occur. When mounting the water purification cartridge PC1, such as when replacing the used water purification cartridge PC1 with a new water purification cartridge PC1, the water purification cartridge PC1 is inserted into the cartridge mounting portion. In this insertion, the restriction release section DR1 is the leading end in the insertion direction. Therefore, another member (such as the insertion section 800) easily hits the restriction release section DR1.

  From the viewpoint of collision avoidance, the connection end portion 140 preferably has the gap forming portion 802 described above. Because of the gap forming portion 802, the restriction release portion DR1 is located radially inward of the adjacent insertion portion 800, so that collision avoidance is enhanced.

  From the viewpoint of collision avoidance, the connection end 140 preferably has the above-described wall 160. As shown in FIG. 37, a circumferential outer surface 804 is formed between the wall portion 160 and the restriction release portion DR1. The gap gp1 is located radially outward of the outer circumferential surface 804. The diameter of the outer circumferential surface 804 is constant. The diameter of the circumferential outer surface 804 is equal to the diameter of the radially outermost M1 of the restriction release part DR1.

  It is preferable that the wall 160 be provided from the viewpoint of collision avoidance. Due to the presence of the wall portion 160, when the water purification cartridge PC1 is inserted, the probability that the wall portion 160 collides with another member becomes higher than that of the restriction release portion DR1. The wall section 160 can function to protect the regulation release section DR1. For this reason, collision avoidance is enhanced. From the viewpoint of collision avoidance, it is preferable that the radially outermost M1 of the restriction release part DR1 be located radially inward of the radially outermost M2 of the wall 160.

  The insertion portion 800 has an inward convex portion 810. The inward convex portion 810 protrudes radially inward. The inward protrusion 810 is located downstream of the wall 160. The inward protrusion 810 is in contact with the wall 160. By this contact, the water purification cartridge PC1 is positioned.

  In the present application, the radially innermost part M3 of the inner convex part 810 is defined. The radially innermost part M3 means a part located on the innermost side in the radially protruding part 810. In the embodiment of FIG. 37, the radially innermost portion M3 is the inner peripheral edge of the inwardly protruding portion 810. The radial direction means the radial direction of the water purification cartridge PC1 (connection end 140).

  From the viewpoint of collision avoidance, it is preferable that the radially outermost portion M1 of the restriction release portion DR1 be located radially inward of the radially innermost portion M3 of the inner convex portion 810.

  FIG. 38 is the same cross-sectional view as FIG. Since the codes are crowded in FIG. 37, FIG. 38 is described from the viewpoint of clarity.

  In FIG. 38, what is indicated by the double-headed arrow D1 is the diameter of the virtual cylindrical surface passing through the radially outermost M1 of the restriction release part DR1. In the present embodiment, D1 is the outer diameter of the end face EF1. Note that the virtual cylindrical surface in the present application is coaxial with the water purification cartridge PC1.

  In FIG. 38, what is indicated by a double-headed arrow D2 is the diameter of a virtual cylindrical surface passing through the radially outermost M2 of the wall 160. In the present embodiment, D2 is the outer diameter of the outer peripheral edge of the wall 160.

  In FIG. 38, what is indicated by a double-headed arrow D3 is the diameter of a virtual cylindrical surface passing through the radially innermost portion M3 of the inward convex portion 810. In the present embodiment, D3 is the inner diameter of the inward convex portion 810.

  In FIG. 38, what is indicated by a double-headed arrow D4 is the diameter of the virtual cylindrical surface passing through the radially outermost M4 of the connection end 140. In the present embodiment, D4 is the outer diameter of the maximum outer diameter portion of the connection end 140. In the present embodiment, D4 is the outer diameter of the radially outermost M4. In the present embodiment, D4 is the outer diameter of the maximum outer diameter portion of the connection end 140. In the present embodiment, D4 is the outer diameter of the third cylindrical portion 154.

  In FIG. 38, what is indicated by a double-headed arrow D5 is the diameter of a virtual cylindrical surface passing through the radially innermost portion M5 of the adjacent portion AJ2 facing the radially outermost portion M4 of the connection end portion 140. In the present embodiment, D5 is the inner diameter of a portion of the cartridge mounting portion that faces the radially outermost M4. In other words, in the present embodiment, D5 is the inner diameter of the adjacent portion AJ2. The adjacent portion AJ2 is a portion adjacent to the radially outermost M4.

  The surface facing the outer surface of the gap forming portion 802 has a radially innermost portion M6 (see FIG. 37). In FIG. 38, what is indicated by a double-headed arrow D6 is the diameter of a virtual cylindrical surface passing through the radially innermost part M6. In the present embodiment, D6 is the inner diameter of the facing surface facing the outer surface of the gap forming portion 802.

  In FIG. 38, what is indicated by a double-headed arrow D7 is the axial distance between the center of the connection end O-ring 162 and the restriction release part DR1.

  The unit of D1 to D7 is mm.

  From the viewpoint of collision avoidance, the difference (D2-D1) is preferably large. The difference (D2-D1) is preferably equal to or greater than 0.5 mm, more preferably equal to or greater than 1.0 mm, and still more preferably equal to or greater than 2.0 mm. When D1 is too small, the inner diameter of the end face EF1 becomes small, and the flow passage area of the purified water may be reduced. Considering the flow rate, an excessively small D1 is not preferable. In this respect, the difference (D2-D1) is preferably equal to or less than 6.0 mm, more preferably equal to or less than 5.0 mm, and still more preferably equal to or less than 4.0 mm. In the present embodiment, the difference (D2-D1) is 3.0 mm.

  In light of collision avoidance, the difference (D3-D1) is preferably large. The difference (D3-D1) is preferably equal to or greater than 0.1 mm, more preferably equal to or greater than 0.5 mm, and still more preferably equal to or greater than 0.8 mm. Considering the flow rate, an excessively small D1 is not preferable. In this respect, the difference (D3-D1) is preferably equal to or less than 3.0 mm, more preferably equal to or less than 2.0 mm, and still more preferably equal to or less than 1.5 mm. In the present embodiment, the difference (D3-D1) is 1.0 mm.

  As described above, the gap gp1 is preferably large from the viewpoint of collision avoidance. In this respect, the difference (D6-D1) is preferably equal to or greater than 0.2 mm, more preferably equal to or greater than 0.5 mm, and still more preferably equal to or greater than 1.0 mm. Considering the flow rate, an excessively small D1 is not preferable. In this respect, the difference (D6-D1) is preferably equal to or less than 6.0 mm, more preferably equal to or less than 5.0 mm, and still more preferably equal to or less than 4.0 mm. In the present embodiment, the difference (D6-D1) is 2.0 mm.

  As shown in FIG. 37, a gap gp2 exists between the radially outermost portion M4 of the connection end portion 140 and the radially innermost portion M5 of the adjacent portion AJ2. It is preferable that the gap gp2 is small from the viewpoint of avoiding collision between the restriction release part DR1 and another member. Since the gap gp2 is narrowed, the displacement of the water purification cartridge PC1 in the radial direction during insertion is suppressed. Therefore, the collision avoidance between the restriction release part DR1 and another member is enhanced.

  From the viewpoint of collision avoidance, the difference (D5-D4) is preferably smaller than the difference (D6-D1).

  From the viewpoint of increasing the flow rate in the raw water flow path WG, it is preferable that the difference (D5-D4) is large. In this respect, the difference (D5-D4) is preferably equal to or greater than 0.5 mm, more preferably equal to or greater than 1.0 mm, and still more preferably equal to or greater than 1.5 mm. If D5 is too large, the water discharge head with a water purification function and the water purification cartridge tend to be large. On the other hand, if D4 is too small, the flow rate of the water purification flow path WJ will be small, and the storage amount of the water purification material or the like will be small, and the water purification capacity will likely be low. From these viewpoints, the difference (D5-D4) is preferably equal to or less than 5 mm, more preferably equal to or less than 4 mm, and still more preferably equal to or less than 3 mm. In the present embodiment, the difference (D5-D4) is 2.0 mm.

  From the viewpoint of increasing the flow rate of the water purification flow path WJ and increasing the storage amount of the water purification material and the like to increase the water purification capacity, D4 is preferably larger. In this respect, D4 is preferably equal to or greater than 20 mm, more preferably equal to or greater than 25 mm, and still more preferably equal to or greater than 27 mm. From the viewpoint of preventing the water discharge head with the water purification function and the water purification cartridge from being enlarged, an excessively large D4 is not preferable. In this respect, D4 is preferably equal to or less than 40 mm, more preferably equal to or less than 35 mm, and still more preferably equal to or less than 32 mm. In the present embodiment, D4 is 29.5 mm.

  The connection end portion 140 has a contact defining portion 812 that positions the water purification cartridge PC1 in the axial direction. In the embodiment of FIG. 37, the contact defining section 812 is the wall section 160.

  When the water purification cartridge PC1 is inserted, the inwardly protruding portion 810 may collide with the contact defining portion 812. In addition, a force acts on the contact defining portion 812 due to the water pressure of the purified water flowing downstream. Therefore, the contact defining portion 812 needs rigidity and strength. From this viewpoint, it is preferable that the contact defining portion 812 has an appropriate axial thickness. Further, as described above, it is preferable to secure the gap gp1, and it is preferable to provide the gap forming portion 802 for that purpose. In these respects, D7 is preferably equal to or greater than 2.0 mm, more preferably equal to or greater than 4.0 mm, and still more preferably equal to or greater than 5.0 mm. In consideration of the miniaturization of the water discharge head, D7 is preferably 15.0 mm or less, more preferably 10.0 mm or less, and still more preferably 8.0 mm or less. In the present embodiment, D7 is 6.0 mm.

  As described above, the regulating member RG1 rotates around the rotation center line Z1 in the transition from the first state J1 to the second state J2. By this rotation, both ends of the regulating member RG1 (the regulation releasing contact portion 112 and the switching regulating portion 114) can move to positions away from the center line Z2 of the water purification cartridge PC1 (see FIG. 38). For this reason, both ends of the regulating member RG1 can easily come into contact with the adjacent portion AJ1. When this contact occurs, the rotation of the regulating member RG1 is inhibited, and the second state J2 cannot be realized. As described above, since the length of the water purification cartridge PC1 has a dimensional error, the position of the end face EF1 may vary. In order to realize the second state J2 in the entire range of the variation, an angle range is required in the second state J2. When the contact occurs in this angle range, the rotation of the regulating member RG1 is hindered, and the number of defective water purification cartridges PC1 in which the second state J2 cannot be realized increases.

  In order to avoid these problems, the rotation center line Z1 is preferably arranged at a position close to the center line Z2. The distance between the rotation center line Z1 and the center line Z2 is preferably 3.0 mm or less, more preferably 2.0 mm or less, and still more preferably 1.0 mm or less. The lower limit of the distance between the rotation center line Z1 and the center line Z2 is 0 mm. In the present embodiment, the distance between the rotation center line Z1 and the center line Z2 is 0 mm (see FIG. 38).

  When the rotation center line Z1 of the regulating member RG1 is close to the center line Z2, it is preferable that the regulation release portion DR1 abutting on the regulating member RG1 is also close to the center line Z2. That is, D1 is preferably small from the viewpoint of contact with the regulating member RG1. In this respect, D1 is preferably equal to or less than 20.0 mm, more preferably equal to or less than 16.0 mm, and still more preferably equal to or less than 14.0 mm. In light of the flow rate, D1 is preferably equal to or greater than 6.0 mm, more preferably equal to or greater than 8.0 mm, and still more preferably equal to or greater than 10.0 mm. In the present embodiment, D1 is 12.0 mm.

  In light of contact with the regulating member RG1 and collision avoidance, D1 / D2 is preferably equal to or less than 0.95, more preferably equal to or less than 0.90, and still more preferably equal to or less than 0.85. In light of the flow rate, D1 / D2 is preferably equal to or greater than 0.60, more preferably equal to or greater than 0.70, and still more preferably equal to or greater than 0.75. In the present embodiment, D1 / D2 is 0.80.

  In light of contact with the regulating member RG1 and collision avoidance, D1 / D4 is preferably equal to or less than 0.70, more preferably equal to or less than 0.60, and still more preferably equal to or less than 0.50. In light of the flow rate, D1 / D4 is preferably equal to or greater than 0.25, more preferably equal to or greater than 0.30, and still more preferably equal to or greater than 0.35. In the present embodiment, D1 / D4 is 0.41.

  Examples of the material of the regulating member include resin and metal. From the viewpoint of cost, when the material is metal, sintering, casting or forging is preferable as the manufacturing method of the regulating member. When the material is a resin, a thermoplastic resin that is easy to mold is preferable. From the viewpoint of moldability, polyoxymethylene (POM), polyphenylene sulfide (PPS), acrylonitrile butadiene styrene copolymer (ABS) and polypropylene (PP) are more preferred. From the viewpoint of strength, polyphenylene sulfide (PPS) is particularly preferred.

  As a material of the regulation release part of the water purification cartridge, a resin or a metal is used. From the viewpoint of cost, when the material is metal, sintering, casting, or forging is preferable as the method of manufacturing the regulation release part. When the material is a resin, a thermoplastic resin that is easy to mold is preferable. From the viewpoint of moldability, polyoxymethylene (POM), polyphenylene sulfide (PPS), acrylonitrile butadiene styrene copolymer (ABS), and polypropylene (PP) are more preferred. From the viewpoint of moldability and cost, acrylonitrile butadiene styrene copolymer (ABS) and polypropylene (PP) are particularly preferred.

  While the water purification cartridge PC1 is replaced every predetermined use period, the regulating member is not replaced. It is preferable that the regulating member used repeatedly for a long time has high rigidity and high wear resistance. In this respect, the longitudinal elastic modulus of the material of the regulating member is preferably equal to or greater than 0.1 GPa, more preferably equal to or greater than 1.0 GPa, and still more preferably equal to or greater than 3.0 GPa. In consideration of the above-mentioned preferable materials, the longitudinal elastic modulus of the material of the regulating member is preferably 10 GPa or less, more preferably 9 GPa or less, and still more preferably 8 GPa or less. It is preferable that the longitudinal elastic coefficient of the material of the regulating member is larger than the longitudinal elastic coefficient of the material of the regulation releasing section of the water purification cartridge. The longitudinal elastic modulus is obtained from the relationship between the amount of strain and the tensile stress, is a proportional constant between the amount of strain and the stress in the elastic range, and is also called Young's modulus. The longitudinal elastic modulus of a general material is described in many documents and is well known. Where the literature values are unclear, the modulus of longitudinal elasticity can be measured according to ASTM D638. In this measurement, a test piece made of the same material as the member to be measured can be used.

  In the above-described embodiment, the transmission unit 26 is configured to transmit water from the outer peripheral surface of the water purification cartridge PC1 to the inside, but the configuration of the transmission unit is not limited to this configuration. For example, the outer peripheral surface of the water purification cartridge PC1 may be formed by a non-water-permeable outer peripheral wall, and a transmission portion may be provided inside the outer peripheral wall. In this case, water can flow into the water purification cartridge PC1 from the upstream end (rear end) of the water purification cartridge PC1, pass through the permeation part, and reach the connection end 140. In this configuration, a through-hole or the like is provided in the above-described rear forming portion 142, and the inflow of water from the rear end of the water purification cartridge PC1 is allowed.

  In the above-described embodiment, the water purification function unit is a transmission unit, and purified water is generated by transmitting raw water through the transmission unit. As described above, the transmission section is merely an example of the water purification function section. The purified water may be generated without passing through the permeation part. For example, the water purification cartridge may include a metal material, and purified water may be generated by releasing metal ions having an effect of disinfecting, antibacterial, sterilizing, or inhibiting bacterial growth from the metal material.

In the present application, purified water is a concept including the generated water of the following (1) and (2).
(1) Produced water from which substances or ions in water are removed by an adsorbent or a filtration membrane.
(2) Produced water in which water contains metal ions, electrons, substances, and the like to impart useful functions to water, such as adding metal ions to water in order to provide water with functions such as sterilization.

  Specifically, the purified water in the present application is a concept including water generated by the following function A and / or function B. In other words, the water purification function unit in the present application is a concept including a function unit having the following function A and / or function B.

[Function A]
The function A is one or more functions selected from the group consisting of the following A1, A2, A3, A4, and A5.
A1: A function of adsorbing and removing substances in water using an adsorbent such as activated carbon.
A2: A function of filtering substances in water using a filter medium. Preferably, the filter medium is a filtration membrane such as a reverse osmosis membrane, an ultrafiltration membrane, a microfiltration membrane, a nanofiltration membrane, a porous hollow fiber membrane, and a function of filtering substances in water using the filtration membrane.
A3: A function of taking in and removing metal ions and the like in water using an ion exchange resin or the like.
A4: Function of releasing metal ions having an effect of removing bacteria, antibacterial, sterilizing, and / or inhibiting the growth of bacteria from a metal material.
A5: A function of releasing metal ions from a metal material and generating active oxygen by incorporating electrons generated by the release of the metal ions into oxygen in water.

  Examples of substances in water to be purified include chlorine, volatile organic compounds, pesticide substances, musty odor substances, heavy metals, and the like. Preferably, one or more selected from the group consisting of chlorine, volatile organic compounds, pesticide substances, musty odor substances and heavy metals are removed.

  Examples of the volatile organic compounds include chloroform, bromodichloromethane, dibromochloromethane, broloform, tetrachloroethylene, trichloroethylene, 1,1,1-trichloroethane, and total trihalomethane. Preferably, one or more selected from the group consisting of chloroform, bromodichloromethane, dibromochloromethane, broloform, tetrachloroethylene, trichloroethylene, 1,1,1-trichloroethane, and total trihalomethane are removed.

  Examples of the agrochemical substance include 2-chloro-4,6-bistylamino-1,3,5-triazine. Preferably, the 2-chloro-4,6-bistylamino-1,3,5-triazine is removed.

  Examples of the musty odor substance include 2-methylisoborneol, geosmin, and phenols. Preferably, one or more selected from the group consisting of 2-methylisoborneol, geosmin and phenols are removed.

  Examples of the heavy metal include lead, mercury, copper, arsenic, and cadmium. Preferably, one or more selected from the group consisting of lead, mercury, copper, arsenic and cadnium is removed.

  Examples of the metal ion in the function A4 include a zinc ion and a silver ion. Preferably, one or more selected from the group consisting of zinc ions and silver ions are released.

  Examples of the bacterium in the function A4 include Escherichia coli and staphylococci, and also include various germs defined (inclusive) as general bacteria. It is preferred that one or more of the fungi is eradication, antibacterial, germicidal or growth inhibited.

  The active oxygen in the function A5 can decompose organic substances such as bacteria. Examples of the bacteria include Escherichia coli and staphylococci, and also include various bacteria defined (inclusive) as general bacteria. Preferably, one or more of these bacteria is degraded.

  From the viewpoint that chlorine and harmful substances can be effectively removed and the manufacturing cost of the water purification cartridge can be reduced, a water purification cartridge having the function A1 is preferable. It should be noted that a water purification cartridge having one or more functions selected from the functions A2, A3, A4, and A5 and the function A1 can also be used.

[Function B]
Function B is described in “Six Water Purifiers” in Schedule 2 (Related to Article 2) of the General Goods and Industrial Products Quality Labeling Regulations (Revision Date: March 30, 2017 / Effective Date: April 1, 2017). This is a function of purifying water using a defined filter medium and / or medium. In other words, the water purification cartridge is based on “6 Purified Water” in Schedule 2 (Related to Article 2) of the General Goods and Industrial Products Quality Labeling Regulations (Revision Date: March 30, 2017 / Effective Date: April 1, 2017). It is preferable to include a water purification function unit that purifies water using a filter medium and / or a medium defined in the “vessel”.

  The water purification function unit having the function A and / or the function B may form a part of the water purification flow path, may be arranged in the water purification flow path, or circulates in the water purification flow path. It may be arranged in a pool.

  The water purification cartridge may be an integral type in which the whole is inseparably integrated, or may be a composite type composed of a plurality of members that can be separated from each other.

  The composite type may have, for example, a configuration including an adapter member having the restriction release section and a cartridge body. The adapter member may or may not be connectable to the cartridge body. In other words, the adapter member may be attachable to the cartridge body, or may not be attachable to the cartridge body. When the adapter member is attachable to the cartridge body, the adapter member may be removably attached to the cartridge body, or may be irremovably attached to the cartridge body.

The configurations of the adapter member and the cartridge body are not limited, and may be, for example, any of the following configurations B1 to B4.
B1: A configuration in which the adapter member is mounted on the cartridge mounting portion with the adapter member mounted on the cartridge body.
B2: A configuration in which the adapter member is first mounted on the cartridge mounting portion, and then the cartridge body is mounted on the adapter member.
B3: A configuration in which the adapter member is mounted on a part of the cartridge mounting portion, and the cartridge body is mounted on the other portion of the cartridge mounting portion.
B4: A configuration in which the adapter member is first mounted on a part of the cartridge mounting portion, and then the cartridge body is mounted on the other portion of the adapter member and the cartridge mounting portion.

  In the above configurations B1 to B4, the adapter member may be configured to be removably attached to the cartridge mounting portion, or may be configured to be non-removably attached. However, when the regulating member cannot be removed, the regulating member is held in the second state. Therefore, it is preferable that the adapter member is detachably attached to the cartridge mounting portion.

  This application also describes other inventions that are not included in the claimed invention (including the independent claim). Respective forms, members, configurations, and the like described in the claims and the embodiments of the present application are recognized as inventions based on the respective functions and effects.

  Each form, member, configuration, and the like shown in each of the above embodiments may be individually applied to the present invention, including the invention according to the claims of the present application, without including all the forms, members, or configurations of these embodiments. The invention can be applied to all the described inventions.

  The method described above can be used for faucets for any purpose.

2, 200, 400, 600 ... faucet device 4, 204, 404, 604 ... main body 6, 206, 406, 606 ... lever handle 8, 208, 408, 608 ... water discharge head 14 , 214, 414, 614 ... operation part RG1-RG4 ... regulating member DR1-DR4 ... regulation release part LC1-LC4 ... interlocking contact part PC1 ... water purification cartridge 140 ... water purification cartridge EF1 end face (downstream end face of water purification cartridge PC1)
J1: first state of the regulating member J2: second state of the regulating member

Claims (10)

A discharge port,
A switching mechanism that can switch between water discharged from the discharge port and raw water or purified water,
A transition between the first state and the second state is possible. In the first state, the switching from the raw water to the purified water by the switching mechanism is regulated, and in the second state, the raw water to the purified water by the switching mechanism. A regulating member that allows switching of
A water purification cartridge having a regulation release section for shifting the regulation member from the first state to the second state;
A water purification cartridge mounting part,
Has,
When the water purification cartridge is not mounted on the cartridge mounting portion, the restricting member is in the first state, and when the water purification cartridge is mounted on the cartridge mounting portion, the restricting member is caused by the restriction releasing portion. The water discharge head with a water purification function that is in the second state. The restricting member has a switching restricting portion that is in the first position in the first state and is in the second position in the second state,
In the process of switching from raw water to purified water by the switching mechanism, the switching restrictor at the first position abuts on an interlocking abutment that is interlocked with the switching mechanism,
The water discharge head with a water purification function according to claim 1, wherein the switching restricting portion at the second position does not abut on the interlocking abutting portion in a process of switching from raw water to purified water by the switching mechanism.   3. The water discharge head with a water purification function according to claim 1, wherein the regulating member shifts from the first state to the second state when the regulation releasing section contacts the regulating member. 4. The regulating member is rotatably fixed,
The water discharge head with a water purification function according to any one of claims 1 to 3, wherein mutual rotation between the first state and the second state is achieved by rotation of the regulating member.   A faucet device comprising the water discharge head according to claim 1. A discharge port, a switching mechanism capable of switching between water discharged from the discharge port and raw water, and a transition between a first state and a second state is possible. In the first state, water is purified from the raw water by the switching mechanism. And a water purification head having a water purification function, comprising: a regulating member that regulates switching from raw water to purified water by the switching mechanism in the second state, and a water purification cartridge mounting portion. A cartridge,
A water purification cartridge comprising: a water purification function section; and a regulation release section that shifts the regulation member from the first state to the second state.   7. The water purification cartridge according to claim 6, wherein the regulation release section is capable of shifting the regulation member from the first state to the second state by contacting the regulation member. 8.   8. The water purification cartridge according to claim 6, wherein the restriction release portion is an end surface on a downstream side of the water purification cartridge. 9. It has a connection end that constitutes a downstream end of the water purification cartridge,
The water purification cartridge mounting portion has an insertion portion into which the connection end is inserted,
The connection end portion has a gap forming portion that forms a gap with the insertion portion,
The water purification cartridge according to any one of claims 6 to 8, wherein an end surface of the gap forming portion is the restriction release portion. The connection end portion further includes an O-ring disposed on the upstream side of the restriction release section, and a wall disposed between the restriction release section and the O-ring,
The water purification cartridge according to claim 9, wherein a radially outermost portion of the restriction release portion is located radially inward of a radially outermost portion of the wall portion.

Images