JP6640952B2 - Water discharge head with water purification function, water purification cartridge and faucet device - Google Patents

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 that can switch 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.

  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.

Japanese Patent No. 3454756

  With regard to this problem, the international patent application PCT / JP2018 / 000349 has been filed. The water discharge head with a water purification function disclosed in this application is capable of switching between a first state and a second state, and a switching mechanism capable of switching between water discharged from the discharge port and raw water or purified water. A regulating member that regulates switching from raw water to purified water by the switching mechanism in the first state, and a regulating member that permits switching from raw water to purified water by the switching mechanism in the second state; It has a water purification cartridge having a regulation release section for shifting from the first state to the second state, and a 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. In this water discharge head, when the water purification cartridge is not mounted on the cartridge mounting portion, the regulating member is in the first state, so that switching from raw water to purified water is restricted. Therefore, misidentification of the water discharge can be prevented.

  The present inventor has found room for further improvement of the faucet provided with the regulating member. An object of the present invention is to provide a water discharge head and a water purification cartridge that can prevent misidentification of water discharge and have excellent reliability.

  In one aspect, a water discharge head with a water purification function includes a discharge port, a raw water flow path, a purified water flow path, a switching mechanism that can switch between discharged water from the discharge port and raw water or purified water, a first state and a second state. It is possible to reciprocate with the state. In the first state, the switching from the raw water to the purified water by the switching mechanism is restricted, and in the second state, the switching from the raw water to the purified water by the switching mechanism is permitted. A member, a regulation release section that shifts the regulation member from the first state to the second state, a water purification cartridge having a non-water-permeable front end closed outer surface, and a 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. It is configured to be in the second state. The outer surface of the closed end faces the raw water flow path. The regulating member is arranged in the purified water flow path.

  In another aspect, the water purification cartridge includes a discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state. A regulating member that regulates switching from raw water to purified water by the switching mechanism in the state, and a switching member that allows switching from raw water to purified water by the switching mechanism in the second state; and a purified water flow path in which the regulating member is disposed. And a water purifying cartridge having a water purifying function and a raw water flow path and a cartridge mounting portion. The water purification cartridge includes a water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, and a non-water-permeable front end closed outer surface facing the raw water flow path. are doing.

  Another embodiment is a faucet device including the water discharge head with a water purification function.

  In one aspect, misidentification of water discharge is prevented, and the reliability of the misidentification prevention mechanism is increased.

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. 3A is a cross-sectional view of the water discharge head along the line aa of FIG. 3B, and FIG. 3B is a cross-sectional view of the water discharge head along the line bb of FIG. It is sectional drawing. 4A is a cross-sectional view of the water discharge head along the line aa in FIG. 4B, and FIG. 4B is a cross-section of the water discharge head along the line bb in FIG. FIG. FIG. 5 is an exploded perspective view of the water discharge head of FIG. 6A is a perspective view of the regulating member, FIG. 6B is a perspective view of the regulating member seen from a different angle from FIG. 6A, and FIG. 6C is a side view of the regulating member. FIG. 6D is a plan view of the regulating member. 7A is a perspective view of a ball holding body of the water purification shutoff valve, FIG. 7B is a perspective view of the ball holding body seen from a different angle from FIG. 7A, and FIG. FIG. 7D is a side view of the body, and FIG. 7D is a plan view of the ball holding body. FIG. 8 is a perspective view of the water purification cartridge. 9A is a side view of the water purification cartridge, FIG. 9B is a front view of the water purification cartridge, and FIG. 9C is a cross-sectional view taken along line cc of FIG. 9B. FIG. 9D is a sectional view taken along line dd of FIG. 9B. FIG. 10 is an enlarged cross-sectional view of a part of FIG. FIG. 11 is an enlarged sectional view of a part of FIG. 12A is a perspective view of the transmission member, FIG. 12B is a perspective view seen from another angle, FIG. 12C is a front view of the transmission member, and FIG. FIG. 4 is a side view of a transmission member. 13A is a perspective view of the receiving portion forming member, FIG. 13B is a side view of the receiving portion forming member, and FIG. 13C is a front view of the receiving portion forming member. FIG. 14 is an enlarged sectional view of a part of FIG. FIG. 15A is a side view showing a transmission member, a regulating member, an interlocking contact portion, and the like in a non-attached state, and FIG. 15B shows a state in which the operation unit is pressed from the state of FIG. FIG. FIG. 16A is a side view showing a transmission member, a regulating member, an interlocking contact portion, and the like in a mounted state, and FIG. 16B shows a state in which the operation unit is pressed from the state of FIG. 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 attached at a regular position. Unless otherwise specified, the axial direction in the present application means the axial direction of the water purification cartridge installed 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. In the water purification cartridge, the upstream side and the downstream side are determined based on the axial direction. That is, in the water purification cartridge, the front end side in the axial direction is the downstream side, and the rear end side in the axial direction is the upstream side. Unless otherwise specified, the downstream side is also referred to as the front side, and the upstream side is also referred to as the rear side.

  In the present application, a state in which the water purification cartridge is not mounted on the cartridge mounting section 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. In the mounted state, the water purification cartridge PC1 is mounted at a regular position.

[Kinds underlying the present disclosure]
In the type of faucet described above, the time during which the water purification cartridge is mounted is long. As long as the water purification cartridge is mounted, the regulation member and the regulation release section do not move. In the faucet disclosed in PCT / JP2018 / 000349, the regulating member and the regulation canceling part are in a stationary state (an immobile state) for a long time.

  Due to the long-term immobile state, water residue, dirt, and the like easily adhere to the regulating member, the regulation releasing portion, and the vicinity thereof. Due to the long-term immobile state, sticking is likely to occur between the regulating member and the regulation releasing portion and between the regulating member and the supporting portion that supports the regulating member. This sticking can cause a malfunction.

  The present disclosure is based on such knowledge, and discloses a configuration that can suppress a malfunction.

[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. A lever and a dial are exemplified as the operation unit 14 other than the push button. The operation unit of the lever and the operation unit of the dial are known.

  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, two or more water shapes can be selected. In the case of a configuration in which two types of water forms can be selected, it is preferable that a straight water form and a shower water form can be selected. In the case of a configuration in which three types of water shapes can be selected, it is preferable that a straight water shape, a first shower water shape and a second shower water shape in different shower water discharge modes can be selected, and in the present embodiment, A configuration is employed. The shower water discharge mode includes a shower water discharge range, a shower water discharge amount, a shower water discharge momentum, and the like.

  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. FIGS. 3A and 3B are cross-sectional views of the water discharge head 8 in a non-mounted state. 4A and 4B are cross-sectional views of the water discharge head 8 in the mounted state.

  FIG. 3A is a cross-sectional view taken along the line aa of FIG. FIG. 3B is a cross-sectional view along the line bb in FIG. 3A and 3B, the operation unit 14 is located at the protruding position. FIGS. 3A and 3B show a raw water discharge state. Although not shown, raw water is also discharged when the operation unit 14 is at the protruding position even when the water purification cartridge PC1 is mounted. In a normal use state, the water purification cartridge PC1 is mounted even in a raw water discharge state.

  FIG. 4A and FIG. 4B are cross-sectional views of the water discharge head 8. FIG. 4A is a cross-sectional view taken along the line aa of FIG. 4B. FIG. 4B is a cross-sectional view taken along line bb of FIG. 4A. In FIGS. 4A and 4B, the operation unit 14 is in the pushed-in position. 4 (a) and 4 (b) show a purified water discharge state.

  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 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 enabled, 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 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. 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 in the pressed position, the raw water may be discharged.

  FIG. 5 is an exploded perspective view of the water discharge head 8.

  As shown in FIG. 5, 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 FIG. 4A). A water purification channel WJ is formed inside the water purification cartridge PC1 (see FIG. 4A). 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 and becomes purified water in the process from the outside to the inside of the purified water cartridge PC1. 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.

  Returning to FIG. 5, the water discharge head 8 has 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 unit 70. The water shape switching unit 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 section 70 has a valve seat forming section 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 101b and the elastic body 101d are accommodated in the 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 102b and the elastic body 102d are housed in the ball holder 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 purified water cutoff valve that closes the purified water 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 shutoff valve that closes a raw water flow path.

  The water discharge head 8 has a regulating member RG1. The regulating member RG1 is arranged in the purified water flow path WJ. The regulating member RG1 is rotatably fixed. 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.

  As shown in FIG. 3B, in a state where the water purification cartridge PC1 is not mounted, the regulating member RG1 is in the first state J1. As shown in FIG. 4B, in a state where the water purification cartridge PC1 is mounted, the regulating member RG1 is in the second state J2. The mutual transition between the first state J1 and the second state J2 is achieved by the rotation of the regulating member RG1. The posture of the regulating member RG1 is different between the first state J1 and the second state J2. The first state J1 is a first posture of the regulating member RG1. The second state J2 is a second posture of the regulating member RG1.

  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. The rear end of the interlocking contact portion LC1 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.

  The water discharge head 8 has a transmission member TR1. The transmission member TR1 can move in the front-back direction. When the water purification cartridge PC1 is mounted, the transmission member TR1 moves forward. The transmission member TR1 that has moved forward contacts the regulating member RG1. By this contact, the regulating member RG1 shifts from the first state J1 to the second state J2. The transmission member TR1 transmits to the regulating member RG1 that the water purification cartridge PC1 is mounted (at a regular position).

  The water discharge head 8 has a receiving portion forming member 106. The receiving portion forming member 106 is opened rearward. A connection end (described later) of the water purification cartridge PC1 is connected to the receiving portion forming member 106 in a watertight manner. The receiving portion forming member 106 has a connection receiving portion (described later) that can be connected to the water purification cartridge PC1 in a watertight manner.

  The water discharge head 8 has a water-permeable member 108. The water-permeable member 108 is disposed in front of the distal end surface of the water purification cartridge PC1. In the present embodiment, the water-permeable member 108 is a net. This net is a metal net (mesh metal net).

  FIG. 6A is a perspective view of the regulating member RG1. FIG. 6B is a perspective view of the regulating member RG1 viewed from a different direction from FIG. 6A. FIG. 6C is a side view of the regulating member RG1. FIG. 6D is a plan 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 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. The restriction release contact portion 112 is an end of a protruding portion extending from the shaft portion 110 to one side. The switching restricting portion 114 is an end of a protruding portion extending from the shaft portion 110 to the other side. In the first state J1 (see FIG. 3B), the regulation release contact portion 112 is located on the upstream side (rearward) of the shaft portion 110, and the switching regulating portion 114 is located on the downstream side (frontward) of the shaft portion 110. I do.

  FIG. 7A is a perspective view of the ball holder 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.

  The ball holder 102c has a connection portion 134. The connection portion 134 is connected to the push rod 51 (rear end) (see FIG. 5). The ball holder 101c also has a connection portion similar to the connection portion 134, and this connection portion is connected to the push rod 50 (rear end) (see FIG. 5).

  FIG. 8 is a perspective view of the water purification cartridge PC1. 9 (a) is a side view of the water purification cartridge PC1, FIG. 9 (b) is a front view of the water purification cartridge PC1, and FIG. 9 (c) is a cross section taken along line cc of FIG. 9 (b). FIG. 9D is a sectional view taken along line dd of FIG. 9B.

  The water purification cartridge PC1 has a middle part 150, a connection end part 152 arranged at a front end part of the middle part 150, and a rear formation part 154 arranged at a rear end part of the middle part 150. The connection end 152 is coaxial with the intermediate part 150. The rear forming part 154 is coaxial with the intermediate part 150.

  The connection end 152 is provided on the downstream side of the intermediate unit 150. The inside of the connection end 152 is hollow. This cavity functions as a purified water channel WJ. That is, the connection end 152 has a purified water flow path WJ therein. The material of the connection end 152 is a resin. The connection end 152 is integrally formed as a whole. The connection end 152 is integrally formed of resin. The connection end 152 may be formed by combining a plurality of separately molded members.

  The middle part 150 is cylindrical. The intermediate section 150 has a transmission section 151 through which water can pass. The intermediate section 150 has a filtering function. The intermediate part 150 has a hollow part inside. This hollow portion functions as a purified water flow path WJ. The intermediate section 150 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. In addition, the intermediate | middle part 150 of this embodiment is an example of the water purification function part (the part which exhibits a water purification function). The intermediate section 150 may not have a filtering function. The intermediate section 150 may be a cylindrical wall that does not allow water to permeate.

  The water purification cartridge PC1 of the present embodiment has a purifying material capable of removing chlorine. Activated carbon is exemplified as this purifying material.

  The rear forming part 154 closes the rear side of the intermediate part 150. On the other hand, the connection end 152 is permeable to water. The internal space of the connection end 152 is a purified water flow path WJ. The purified water generated by passing through the intermediate section 150 passes through the connection end 152 and reaches the switching section 112.

  In addition, the rear formation part 154 may be made water-permeable. For example, the raw water may flow into the intermediate portion 150 from a through hole provided in the rear formation portion 154 of the water purification cartridge PC1. In this case, the intermediate part 150 may be a non-permeable cylindrical wall part.

  The connection end 152 has a first cylindrical portion 160. Further, the connection end 152 has a second cylindrical portion 162. Further, the connection end 152 has a third cylindrical portion 164. Further, the connection end 152 has a holding cylindrical portion 166. The first cylindrical portion 160 is located downstream of the second cylindrical portion 162. The second cylindrical portion 162 is located downstream of the third cylindrical portion 164. The third cylindrical portion 164 is located downstream of the holding cylindrical portion 166. The second cylindrical portion 162 is located between the first cylindrical portion 160 and the third cylindrical portion 164. The first cylindrical portion 160 and the second cylindrical portion 162 are coaxial. The second cylindrical portion 162 and the third cylindrical portion 164 are coaxial. The third cylindrical portion 164 and the holding cylindrical portion 166 are coaxial. The center line of the first cylindrical portion 160 coincides with the center line z1 of the water purification cartridge PC1. The center line of the second cylindrical portion 162 matches the center line z1 of the water purification cartridge PC1. The center line of the third cylindrical portion 164 matches the center line z1 of the water purification cartridge PC1. The center line of the holding cylindrical portion 166 matches the center line z1 of the water purification cartridge PC1.

  The connection end 152 has a first annular packing s1 and a second annular packing s2. In the present embodiment, the first annular packing s1 is an O-ring. In the present embodiment, the second annular packing s2 is an O-ring.

  The connection end 152 has a maximum outer diameter portion. In the present embodiment, the maximum outer diameter portion of the connection end 152 is the holding cylindrical portion 166. This maximum outer diameter portion (holding cylindrical portion 166) covers the downstream end of the intermediate portion 150. The maximum outer diameter portion (holding cylindrical portion 166) holds the downstream end of the intermediate portion 150.

  The outer diameter of the first cylindrical portion 160 is smaller than the outer diameter of the second cylindrical portion 162. The outer diameter of the second cylindrical portion 162 is smaller than the outer diameter of the third cylindrical portion 164. The outer diameter of the third cylindrical portion 164 is smaller than the outer diameter of the holding cylindrical portion 166.

  The connection end 152 has a first annular packing s1 and a second annular packing s2. The first annular packing s1 is arranged on the first cylindrical portion 160. The second annular packing s2 is arranged on the second cylindrical portion 162.

  FIG. 10 is a partially enlarged view of FIG. FIG. 11 is a partially enlarged view of FIG.

  The first cylindrical portion 160 constitutes a downstream end of the connection end 152. The first cylindrical portion 160 constitutes the downstream end of the water purification cartridge PC1.

  The first cylindrical portion 160 constitutes the downstream end of the water purification cartridge PC1. The first cylindrical portion 160 constitutes a downstream end of the connection end 152.

  The connection end 152 has a tip 170. In the present embodiment, the first cylindrical portion 160 is the tip portion 170. A portion in front of the water purification outlet 240 (described later) may be defined as the tip 170. The tip 170 has a first groove 172. The first groove 172 is formed on the outer peripheral surface of the distal end portion 170 (the first cylindrical portion 160). The first groove 172 is a peripheral groove. The first groove 172 is formed between the front wall 173a and the rear wall 173b. The front wall portion 173a forms a front side surface of the first groove 172. The rear wall portion 173b forms a rear side surface of the first groove 172.

  The first annular packing s1 is arranged at the tip 170. The first annular packing s1 is arranged in the first groove 172.

  The tip 170 has a tip surface 174. The tip surface 174 is the tip surface of the water purification cartridge PC1. The distal end surface 174 is a distal end surface of the connection end 152. The tip surface 174 is a flat surface. The tip surface 174 extends in the radial direction. The tip surface 174 is annular (see FIG. 9B). The distal end surface 174 is provided over the entire circumference. The center of the distal end surface 174 is located on the center line z1 of the water purification cartridge PC1. The tip surface 174 is not the restriction release section DR1. The tip 170 does not have the regulation release section DR1. The regulation release section DR1 will be described later.

  Tip 170 is impermeable to water. The inner surface of the tip 170 faces the purified water channel WJ. In the present embodiment, the inner surface of the distal end portion 170 includes an inner surface 194 described later. The outer surface of the tip 170 faces the raw water flow path WG. In the present embodiment, the outer surface of the tip 170 includes a tip 174 and a recess 176. The outer surface of the tip 170 has a recess 176. The inner surface and the outer surface of the tip 170 are separated by a first annular packing s1. That is, the flow path of the water in contact with the inner surface of the tip and the flow path of the water in contact with the outer surface of the tip are separated by the first annular packing s1. The center line of the tip 170 coincides with the center line z1 of the water purification cartridge PC1. The tip 170 is disposed at a position that intersects the center line z1 of the water purification cartridge PC1.

  The recess 176 is open to the downstream side. The recess 176 is open forward in the axial direction. The recess 176 is open to the raw water flow path WG. The recess 176 is impermeable to water. The cross-sectional shape of the recess 176 is circular (see FIG. 9B). A distal end surface 174 is arranged around the concave portion 176 (outside in the radial direction). The recess 176 forms a cavity inside the tip 170. The recess 176 forms a cylindrical cavity. The cavity formed by the recess 176 exists radially inside the first annular packing s1. The cavity formed by the concave portion 176 exists inside the first groove 172 in the radial direction. The center line of the distal end surface 174 matches the center line z1 of the water purification cartridge PC1.

  As shown in FIGS. 10 and 11, the concave portion 176 has a side surface 178 and a bottom surface 180. Side 178 is a circumferential surface. The side surface 178 is located inside the first groove 172 in the radial direction. The bottom surface 180 is a plane. The bottom surface 180 extends in the radial direction. The bottom surface 180 is circular. The center of the bottom surface 180 is located on the center line z1 of the water purification cartridge PC1.

  A cavity is formed by a recess 176 on the radially inner side of the first groove 172. A cavity is formed by a recess 176 on the radially inner side of the bottom surface 172a.

  The tip 170 has a partition wall 190. The partition wall 190 is impermeable. The partition wall 190 is located on the upstream side of the distal end surface 174. The partition wall 190 extends in the radial direction. The center line of the partition wall 190 coincides with the center line z1 of the water purification cartridge PC1.

  The partition wall 190 crosses the center line z1 of the water purification cartridge PC1. That is, the partition wall 190 is provided at a position crossing the center line z1 of the water purification cartridge PC1. In the present embodiment, the partition wall 190 intersects the center line z1 of the water purification cartridge PC1 at the center. The partition wall 190 may intersect the center line z1 of the water purification cartridge PC1 at a position other than the center. The partition wall 190 forms the bottom surface 180 of the concave portion 176. The bottom surface 180 is the outer surface 192 of the partition wall 190. As described above, the outer surface of the distal end portion 170 has the concave portion 176 having the outer surface 192 of the partition wall 190 as the bottom surface 180.

  The partition wall 190 partitions the inside and the outside of the water purification cartridge PC1. The outer surface 192 of the partition wall 190 constitutes the outer surface of the water purification cartridge PC1. The outer surface 192 faces the raw water flow path WG. The inner surface 194 of the partition wall 190 constitutes the inner surface of the water purification cartridge PC1. The inner surface 194 faces the purified water flow path WJ.

  The tip 170 has a tip closure outer surface 196. The distal end closed outer surface 196 forms a part of the outer surface of the distal end portion 170. The distal end closed outer surface 196 is located downstream of the purified water outlet hole 240. The distal end closed outer surface 196 has a distal end surface 174, a bottom surface 180 (outer surface 192) of the concave portion 176, and a side surface 178 of the concave portion 176. The distal end closed outer surface 196 has a concave portion 176. The distal closure outer surface 196 may not have the recess 176. For example, the distal closure outer surface 196 may be planar. The distal end closed outer surface 196 has a surface (outer surface 192) along the radial direction. The distal end closed outer surface 196 is provided at a position crossing the center line z1 of the water purification cartridge PC1. Tip closure outer surface 196 is impermeable to water. The distal end closed outer surface 196 does not have the regulation release part DR1 (described later).

  The distal end closed outer surface 196 faces the raw water flow path WG. The downstream side of the distal end closed outer surface 196 is a raw water flow path WG. On the other hand, the upstream side of the distal end closed outer surface 196 is a purified water flow path WJ. The upstream side of the distal end closed outer surface 196 is the inside of the water purification cartridge PC1.

  The connection end 152 has a connection extension 200. The connection extending part 200 connects the first cylindrical part 160 and the second cylindrical part 162. As shown in FIG. 9B, a plurality of connection extending portions 200 are arranged at equal intervals in the circumferential direction. In the present embodiment, four connection extending portions 200 are arranged at equal intervals in the circumferential direction. The connection extending portion 200 extends in a direction inclined with respect to the center line z1 of the water purification cartridge PC1. The connection extending portion 200 extends radially inward toward the downstream side. The connection extending portion 200 connects the downstream side of the second cylindrical portion 162 and the upstream side of the first cylindrical portion 160.

  The second cylindrical portion 162 has a second groove 210. The second groove 210 is a peripheral groove. The second groove 210 is formed on the outer peripheral surface of the second cylindrical portion 162. The second annular packing s2 is disposed in the second groove 210. The inside of the second cylindrical portion 162 is a cavity. The inside of the second cylindrical portion 162 is a purified water flow path WJ.

  The second cylindrical portion 162 has a downstream end surface 212. The downstream end surface 212 is a flat surface. The downstream end surface 212 extends in the radial direction. The downstream end surface 212 is annular. The downstream end surface 212 is formed over the entire circumference.

  The downstream end surface 212 may have a first configuration formed continuously without interruption throughout the circumferential direction. The downstream end surface 212 may have a second configuration in which the partitioning portions partitioned by the connection extending portion 200 are arranged in the circumferential direction. The downstream end surface 212 may have a third form having a portion formed continuously without interruption in the entire circumferential direction and a portion in which the partitioning portions partitioned by the connection extending portion 200 are arranged in the circumferential direction. . In the present embodiment, the downstream end surface 212 is formed by arranging four dividing portions 214 divided by the connection extending portion 200 in the circumferential direction, that is, a second embodiment.

  In any of the second and third embodiments, the smaller the width of the connection extending portion 200, the wider the area of the partitioning portion 214 that becomes the restriction release portion DR1. Since the area of the partitioning part 214 is widened, the alignment capability between the member (the transmission member TR1 in the present embodiment) which comes into contact with the restriction release part DR1 and forms a part of the restriction release function and the restriction release part DR1 is improved. , The contact function, the accuracy of the positional relationship in the contact, and the like are improved. In this respect, the width of the connection extension portion 200 is preferably equal to or less than 5.0 mm, more preferably equal to or less than 3 mm, and particularly preferably equal to or less than 2.5 mm. If the width of the connecting extension portion 200 is too small, the strength of the connecting extending portion 200 tends to decrease. In this respect, the width of the connection extension portion 200 is preferably equal to or greater than 0.5 mm, more preferably equal to or greater than 1 mm, and particularly preferably equal to or greater than 1.5 mm. The width of the connection extending portion 200 is a width measured in a direction perpendicular to the extending direction of the connection extending portion extending in the radial direction. If the width changes, the average width is used. In the embodiment, the width of the connecting extension 200 is 2 mm.

  In FIG. 11, what is indicated by a double-headed arrow P is the diameter at the radial center position of the partitioning part 214 (the restriction release part DR1). If the diameter P is too small, the flow rate of purified water tends to decrease. In this respect, the diameter P is preferably equal to or greater than 10 mm, more preferably equal to or greater than 12 mm, and still more preferably equal to or greater than 15 mm. If the diameter P is too large, the water purification cartridge PC1 and the water discharge head 108 become large, and the water faucet is likely to become large. In this respect, the diameter P is preferably equal to or less than 22 mm, more preferably equal to or less than 20 mm, and still more preferably equal to or less than 17 mm. In the above embodiment, the diameter P is 15 mm.

  In the second mode or the third mode, the same radial area is shared by the restriction release section DR1 and the connection extending section 200. In this case, it is possible to prevent the water purification cartridge PC1 and the water discharge head 108 from becoming large and the water tap becoming large. From this viewpoint, it is preferable to adopt the second mode or the third mode.

  Which of the second mode and the third mode is to be selected is preferably selected from the viewpoint of the strength of the regulation release section DR1 and the necessity of the above-described effect of improving the release function. In the case where priority is given particularly to the viewpoint of preventing the water purification cartridge PC1 and the water discharge head 108 from increasing in size and increasing the size of the faucet, the second mode may be adopted. When it is necessary to consider both the strength of the regulation release section DR1 and the viewpoint of the necessity of the above-described release function improvement effect, it is preferable to adopt the third embodiment.

  In FIG. 11, what is indicated by the double-headed arrow Q1 is the radial width of the downstream end surface 212 (the restriction release portion DR1). When the radial width Q1 is small, the above-described effect of improving the release function tends to be insufficient. In this respect, the radial width Q1 is preferably equal to or greater than 1.0 mm, more preferably equal to or greater than 2.0 mm, and particularly preferably equal to or greater than 2.5 mm. If the radial width Q1 is too large, the water purification cartridge PC1 and the water discharge head 108 become large, so that the water faucet becomes large and the water purification outlet hole 240 is apt to be narrow. In this respect, the radial width Q1 is preferably equal to or less than 6.0 mm, more preferably equal to or less than 5.0 mm, and particularly preferably equal to or less than 4.0 mm. In the case of the second embodiment and the third embodiment, the radial width Q1 is the radial width of the dividing portion 214.

  In the third embodiment, the downstream end surface 212 is divided into a continuous portion that is a portion formed continuously without interruption in the entire circumferential direction, and a portion in which the partitioning portions partitioned by the connection extending portion 200 are arranged in the circumferential direction. Have. If the value of the ratio (Q2 / Q1), which is the ratio between the radial width Q2 of the continuous portion and the radial width Q1, becomes too small, the above-described effect of improving the release function tends to be insufficient. In this respect, the value of the ratio (Q2 / Q1) is preferably equal to or greater than 0.2, more preferably equal to or greater than 0.4, and particularly preferably equal to or greater than 0.6. If the value of the ratio (Q2 / Q1) is too large, the strength of the connecting extension 200 tends to decrease. From this viewpoint, the value of the ratio (Q2 / Q1) is preferably 0.9 or less, more preferably 0.8 or less, and particularly preferably 0.7 or less.

  The connection extension part 200 has an extension part downstream surface 202. The extension portion downstream surface 202 is a surface on the downstream side of the connection extension portion 200. The extension portion downstream surface 202 has a configuration 1 in which the extension portion extends radially inward toward the downstream side. With this configuration 1, when the connection end portion 152 of the water purification cartridge PC1 is inserted into the connection reception portion of the cartridge mounting portion, the portion of the connection reception portion 274 abutting on the extension portion downstream surface 202 is aligned with the center line of the connection end portion 152. And the center line of the connection receiving portion are displaced in the same direction. As a result, it is possible to prevent the connection end portion 152 and each portion of the connection receiving portion from being damaged and to connect the connection end portion 152 of the water purification cartridge PC1 to the connection receiving portion. The effect 1 that the operability at the time of insertion into the device is improved.

  On the other hand, the downstream end surface 212 has a configuration 2 that extends in the radial direction, that is, is a surface that is perpendicular to the axial direction. As will be described later, the water discharge head 8 has a transmission member TR1 pressed against the water purification cartridge PC1 when the connection end 152 of the water purification cartridge PC1 is inserted into the connection receiving portion 274. The downstream end surface 212 is a regulation release section DR1. Since the restriction release portion DR1 extends in the radial direction, that is, is a surface perpendicular to the axial direction, the effect 2 that the pressing of the pressing portion can be performed accurately and / or satisfactorily occurs. The effect 2 is exhibited by the restriction release portion DR1 extending in the radial direction.

  Configuration 1 and Configuration 2 can achieve both Effect 1 and Effect 2 despite being disposed in the same axial direction region of the connection end 152. Further, since both the components are arranged in the same axial direction area of the connection end 152, as a result, the water discharge head with the water purification function, the water purification cartridge and the faucet device can be prevented from being enlarged, and the arrangement of the purification function portion can be prevented. An increase in the possible area can also be achieved.

  The third cylindrical portion 164 has a circumferential surface 220 and a step surface 222. The circumferential surface 220 is a circumferential surface. The center line of the circumferential surface 220 is the center line z1 of the water purification cartridge PC1. The step surface 222 is a flat surface. The step surface 222 extends in the radial direction. The step surface 222 is annular. The step surface 222 is formed over the whole in the circumferential direction. The inside of the third cylindrical portion 164 is a purified water flow path WJ.

  The holding cylindrical portion 166 has a circumferential surface 230 and a step surface 232. The circumferential surface 230 is a circumferential surface. The center line of the circumferential surface 230 is the center line z1 of the water purification cartridge PC1. The step surface 232 is a flat surface. The step surface 232 extends in the radial direction. The step surface 232 is annular. The step surface 232 is formed over the whole in the circumferential direction. The step surface 232 connects the upstream side of the circumferential surface 220 and the downstream side of the circumferential surface 230.

  The connection end 152 has a purified water outlet hole 240. The purified water generated by the purified water cartridge PC1 is discharged from the purified water outlet port 240 to the outside of the purified water cartridge PC1. The first annular packing s1 is located downstream of the purified water outlet hole 240. The second annular packing s2 is located upstream of the purified water outlet hole 240. The water purification outlet 240 is located between the first annular packing s1 and the second annular packing s2. The water purification outlet 240 is located between the first cylindrical portion 160 (the distal end portion 170) and the second cylindrical portion 162. The first cylindrical portion 160 is separated from the second cylindrical portion 162, and the separation forms the purified water outlet hole 240. A water purification outlet hole 240 is formed between the connection extending portions 200 adjacent in the circumferential direction.

  In FIG. 11, what is indicated by the double-headed arrow G1 is the outer diameter of the first annular packing s1. The outer diameter G1 is measured in a state where the first annular packing s1 is mounted on the first groove 172 and the water purification cartridge PC1 is not mounted on the water discharge head 8. In other words, the outer diameter G1 is measured in the state of the water purification cartridge PC1 alone. In FIG. 11, what is indicated by the double-headed arrow G2 is the outer diameter of the second annular packing s2. The outer diameter G2 is measured in a state where the second annular packing s2 is mounted on the second groove 210 and the water purification cartridge PC1 is not mounted on the water discharge head 8. In other words, the outer diameter G2 is measured in a state of the water purification cartridge PC1 alone. When the diameter of the bottom surface of the groove changes, as in the bottom surface 172a of the first groove 172, the outer diameters G1 and G2 of the annular packing are determined at positions where the outer diameter of the bottom surface of the groove is maximum. Measured in the deployed state. The outer diameter G1 of the first annular packing s1 is smaller than the outer diameter G2 of the second annular packing s2.

  By making the outer diameter G1 of the first annular packing s1 smaller than the outer diameter G2 of the second annular packing s2, it is possible to increase the radial width and / or area of the downstream end surface 212 that is the restriction release part DR1. Thus, even if there is a manufacturing error or a temporal change due to use of a part, the contact (interaction) between the regulation release part DR1 and the cartridge contact surface 254 of the transmission member TR1 can be made to function well.

  If the difference (G2-G1), which is the value of (outer diameter G2-outer diameter G1), is too small, it becomes difficult to sufficiently secure the radial width and / or area of the downstream end surface 212 that is the restriction release part DR1. . In this respect, the difference (G2-G1) is preferably equal to or greater than 3 mm, more preferably equal to or greater than 4 mm, and still more preferably equal to or greater than 6 mm. If the difference (G2-G1) is excessive, the water purification cartridge PC1 and the water discharge head 108 become large, and the water faucet is likely to become large. In this respect, the difference (G2-G1) is preferably equal to or less than 15 mm, more preferably equal to or less than 12 mm, and still more preferably equal to or less than 10 mm. In the above embodiment, the difference (G2-G1) is 7.8 mm.

  If the ratio (G2 / G1), which is the ratio of the outer diameter G2 to the outer diameter G1, is too small, it becomes difficult to sufficiently secure the radial width and / or area of the downstream end surface 212 that is the restriction release part DR1. In this respect, G2 / G1 is preferably equal to or greater than 1.2, more preferably equal to or greater than 1.3, and still more preferably equal to or greater than 1.5. If G2 / G1 is excessively large, the water purification cartridge PC1 and the water discharge head 108 become large, and the size of the faucet is easily increased. In this respect, G2 / G1 is preferably equal to or less than 2.5, more preferably equal to or less than 2.3, and still more preferably equal to or less than 1.9. In the above embodiment, G2 / G1 is 1.7.

  If the outer diameter G1 of the first annular packing s1 is too small, the strength of the distal end of the water purification cartridge PC1 tends to decrease, and the watertightness of the first annular packing s1 tends to decrease. In this respect, the outer diameter G1 is preferably equal to or greater than 7 mm, more preferably equal to or greater than 9 mm, and still more preferably equal to or greater than 10 mm. If the outer diameter G1 is too large, the water purification cartridge PC1 and the water discharge head 108 become large, and the water faucet is likely to become large. In this respect, the outer diameter G1 is preferably equal to or less than 18 mm, more preferably equal to or less than 15 mm, and still more preferably equal to or less than 13 mm. In the above embodiment, the outer diameter G1 is 11 mm.

  Further, if the outer diameter G2 of the second annular packing s2 is too small, the flow rate of purified water tends to decrease. In this respect, the outer diameter G2 is preferably equal to or greater than 12 mm, more preferably equal to or greater than 14 mm, and still more preferably equal to or greater than 16 mm. If the outer diameter G2 is excessively large, the water purification cartridge PC1 and the water discharge head 108 become large, and the size of the faucet is easily increased. In this respect, the outer diameter G2 is preferably equal to or less than 25 mm, more preferably equal to or less than 23 mm, and still more preferably equal to or less than 21 mm. In the above embodiment, the outer diameter G2 is 18.8 mm.

  FIG. 12A is a perspective view of the transmission member TR1. FIG. 12B is a perspective view of the transmission member TR1 viewed from an angle different from that of FIG. FIG. 12C is a front view of the transmission member TR1 as viewed from the front. FIG. 12D is a side view of the transmission member TR1.

  The transmission member TR1 has a base 250 and a rear extension 252. The rear extension 252 is connected to the base 250 and extends rearward. A plurality (three) of rear extending portions 252 are provided. Each of the plurality (three) of the rear extending portions 252 extends from a different position of the base 250. The plurality (three) of the rear extending portions 252 are dispersedly arranged in the circumferential direction. Each of the rear extending portions 252 extends rearward from the base 250. The rear end of each of the rear extending portions 252 is a free end.

In the present embodiment, the rear extending portion 252 is a leg 253. The leg 253 has an elongated shape, and the cross-sectional area per leg 253 is small. From the viewpoint of the flow rate of purified water, the cross-sectional area of one leg portion 253 (one rear extending portion 252) is preferably 15 mm ² or less, more preferably 10 mm ² or less, particularly preferably 5 mm ² or less. From the viewpoint of the strength of the legs 253 (the rear extending portion 252), the cross-sectional area of one leg portion 253 (one rear extending portion 252) is preferably 1 mm ² or more, more preferably 2 mm ² or more, 3 mm ² or more is particularly preferred. In the present embodiment, the cross-sectional area of one leg 253 (one rear extension 252) is 3.8 mm ² . This cross-sectional area is a cross-sectional area perpendicular to the center line z1 of the water purification cartridge PC1.

  The transmission member TR1 has a cartridge contact surface 254. Each of the rear extending portions 252 has a cartridge contact surface 254. In the present embodiment, the cartridge contact surface 254 is a rear end surface of the rear extending portion 252. As shown in FIG. 12D, the axial positions of the plurality (three) of the cartridge contact surfaces 254 coincide with each other.

  The base 250 has a guide hole 256. The guide hole 256 passes through the base 250. The guide hole 256 is a through hole extending in the axial direction.

  The transmission member TR1 has a release contact surface 260. The release contact surface 260 is provided on the base 250. The front surface of the base 250 has a release contact surface 260.

  FIG. 13A is a perspective view of the receiving portion forming member 106. FIG. 13B is a side view of the receiving portion forming member 106. FIG. 13C is a front view of the receiving portion forming member 106 as viewed from the front.

  FIG. 14 is a partially enlarged view of FIG. FIG. 14 includes a cross-sectional view of the receiving portion forming member 106.

  The receiving portion forming member 106 is disposed inside the water discharge head 8. The receiving portion forming member 106 forms a connection receiving portion (described later). With reference to FIGS. 13 and 14, a configuration of the receiving portion forming member 106 will be described below.

  The water discharge head 8 has a cartridge mounting part 270. The cartridge mounting portion 270 has a cylindrical hollow portion 272 in which an intermediate portion of the water purification cartridge PC1 is arranged (see FIG. 3), and a connection receiving portion 274 (see FIG. 14). As shown in FIGS. 3A and 3B, the cylindrical hollow portion 272 is formed inside the outer cylindrical portion 24. The connection receiving portion 274 is provided in front of the cylindrical hollow portion 272. In the present embodiment, the receiving portion forming member 106 has the connection receiving portion 274.

  As shown in FIG. 14, the connection receiving portion 274 includes a first receiving cylindrical portion 276 and a second receiving cylindrical portion 278. The first receiving cylindrical portion 276 is located closer to the axial front end than the second receiving cylindrical portion 278 is. The first receiving cylindrical portion 276 is located downstream of the second receiving cylindrical portion 278. The inner diameter of the first receiving cylindrical portion 276 is smaller than the inner diameter of the second receiving cylindrical portion 278. The outer diameter of the first receiving cylindrical portion 276 is smaller than the inner diameter of the second receiving cylindrical portion 278.

  As shown in FIG. 14, the connection end portion 152 of the water purification cartridge PC1 is connected to the connection receiving portion 274 in a watertight manner. The first annular packing s1 and the second annular packing s2 ensure watertightness. The first cylindrical portion 160 (tip portion 170) of the connection end 152 is inserted inside the first receiving cylindrical portion 276. The first annular packing s1 is in close contact with the inner peripheral surface of the first receiving cylindrical portion 276. The second cylindrical portion 162 of the connection end 152 is inserted inside the second receiving cylindrical portion 278. The second annular packing s2 is in close contact with the inner peripheral surface of the second receiving cylindrical portion 278. An end surface 280 of the second receiving cylindrical portion 278 is in contact with the step surface 222. With this contact, the water purification cartridge PC1 is positioned in the axial direction.

  As shown in FIG. 13A, the receiving portion forming member 106 has an outer cylindrical portion 106a. The outer cylindrical portion 106a has a small-diameter outer wall portion 106b and a large-diameter outer wall portion 106c. The large-diameter outer wall portion 106c forms a second receiving cylindrical portion 278. An end surface 280 of the second receiving cylindrical portion 278 is constituted by a rear end surface of the receiving portion forming member 106.

  The connection receiving portion 274 has a purified water passage WJ1 that separates purified water flowing out of the purified water outlet hole 240 from the raw water passage WG and forms a part of the purified water passage WJ (see FIG. 14). In the water purification passage WJ1, a space between the first receiving cylindrical portion 276 and the second receiving cylindrical portion 278 is a water purification passage WJ1. The connection receiving portion 274 has a raw water passage WG1 that separates raw water from the purified water passage WJ1 and forms a part of the raw water passage WG (see FIG. 14). The connection receiving portion 274 has a raw water opening 282 serving as an inlet and an outlet to the raw water passage WG1 (see FIGS. 13A and 13B). Although not shown, two raw water openings 282 are provided, one each on the left and right sides of the receiving portion forming member 106. The raw water passage WG1 penetrates the receiving portion forming member 106 by penetrating from the first raw water opening 282 to the second raw water opening 282. Raw water can flow through the raw water passage WG1. The raw water passage WG1 forms a raw water passage WG penetrating in the radial direction (left-right direction). The raw water passage WG1 guides the raw water to the distal end closed outer surface 196 of the water purification cartridge PC1. The raw water passage WG1 guides raw water to the distal end surface 174 of the water purification cartridge PC1. The raw water passage WG1 guides the raw water to the concave portion 176. The distal end closed outer surface 196 faces the raw water flow path WG. The recess 176 faces the raw water flow path WG. The first annular packing s1 and the second annular packing s2 prevent purified water flowing out of the purified water outlet 240 from flowing into the raw water flow path WG. The first annular packing s1 prevents water from the raw water passage WG1 from flowing into the purified water passage WJ. The second annular packing s2 prevents water from the raw water flow path WG from flowing into the outlet of the purified water outlet 240. The second annular packing s2 prevents purified water flowing out of the purified water outlet 240 from flowing into the raw water flow path WG.

  The water-permeable member 108 is provided downstream of the distal end closed outer surface 196 (recess 176). The water-permeable member 108 is arranged to face the distal end surface 174. The water-permeable member 108 is installed facing the raw water passage WG1. The water-permeable member 108 is disposed between the raw water passage WG <b> 1 and the distal end closed outer surface 196. The water-permeable member 108 is disposed between the raw water passage WG1 and the concave portion 176. The water-permeable member 108 does not hinder the flow of the raw water flow path WG. The water flow of the raw water passage WG1 may hit the tip closed outer surface 196. The water flow in the raw water passage WG1 can flow into the recess 176. The water-permeable member 108 can prevent foreign matter from entering the raw water passage WG1.

  As shown in FIG. 13C, the receiving portion forming member 106 has an inner cylindrical portion 106d. The inner cylindrical portion 106d forms a first receiving cylindrical portion 276 (see FIG. 14). The water purification passage WJ1 described above is formed between the inner cylindrical portion 106d and the outer cylindrical portion 106a.

  As shown in FIGS. 13A and 13B, the water discharge head 8 (the receiving portion forming member 106) has a regulating member supporting portion 106e. The regulating member supporting portion 106e rotatably supports (the shaft portion 110 of) the regulating member RG1.

  As shown in FIGS. 13A, 13C, and 14, the water discharge head 8 (the receiving portion forming member 106) has a slide protrusion 106f. The slide protrusion 106f extends along the axial direction. The slide protrusion 106f extends forward. The slide protrusion 106f penetrates the guide hole 256 of the transmission member TR1 (see FIGS. 14 and 12).

  As shown in FIG. 13C, the water discharge head 8 (the receiving portion forming member 106) has a gap 106g. The gap 106g is formed between the outer cylindrical portion 106a and the inner cylindrical portion 106d. The gap 106g forms a cylindrical space. The gap 106g is formed along the circumferential direction of the outer cylindrical portion 106a. The rearward extending portion 252 of the transmission member TR1 is inserted into the gap 106g. All of the plurality (three) of the rear extending portions 252 are inserted into the gap 106g. As a result, the transmission member TR1 holds the first receiving cylindrical portion 276 (the inner cylindrical portion 106d) by the plurality (three) of the rear extending portions 252. The transmission member TR1 is supported from the inside by the first receiving cylindrical portion 276 (the inner cylindrical portion 106d) so as to be movable in the front-rear direction. The transmission member TR1 is supported by the inner cylindrical portion 106d and the outer cylindrical portion 106a so as to be movable in the front-rear direction. Further, as described above, the slide protrusion 106f is inserted into the guide hole 256. The guide hole 256 can slide while being guided by the slide protrusion 106f. That is, the transmission member TR1 is supported by the slide protrusion 106f so as to be movable in the front-rear direction.

  The gap 106g forms a purified water passage WJ1. That is, the gap 106g is the purified water flow path WJ. The transmission member TR1 is arranged in the purified water flow path WJ. The transmission member TR1 arranged in the water purification channel WJ can easily abut on the regulating member RG1 arranged in the water purification channel WJ.

  Since the rear extending portion 252 of the transmission member TR1 is configured like the plurality of legs 253 shown in the present embodiment, a space is generated between the rear extending portions 252, and the space is formed of a clean water flow. It becomes road WJ and helps to secure the flow rate of purified water. That is, the transmission member TR1 includes the base 250 having the release contact surface 260 and the rear extension 252 extending rearward from the base 250 and terminating at the cartridge contact surface 254. It is useful to secure a flow rate of purified water by providing a configuration including a space part that constitutes a part of the purified water flow path WJ therebetween.

  FIGS. 15A and 15B show the regulating member RG1, the transmitting member TR1, the interlocking contact portion LC1, and the like when the water purification cartridge PC1 is not mounted. 15A and 15B, the illustration of the receiving portion forming member 106 is omitted. As shown in FIG. 15A, in this unmounted state, the regulating member RG1 is in the first state J1. As described above, the regulating member RG1 is urged by the urging member 104 in the rotation direction in which the first state J1 is attained. In the unmounted state, the transmission member TR1 is not pressed from behind. In this unmounted state, the transmission member TR1 is at the rear position P1. Even if the transmission member TR1 is located ahead of the rear position P1, the transmission member TR1 is moved to the rear position P1 by the regulating member RG1 urged by the urging member 104 unless the water purification cartridge PC1 is mounted. Pushed back.

  As shown in FIG. 15B, when the operation member 14 is to be shifted from the protruding position to the pushing position in a state where the regulating member RG1 is in the first state J1, the interlocking contact portion LC1 interlocked with the operation member 14 is provided. Contact the regulating member RG1 in the first state J1. That is, the end surface 132 of the interlocking contact portion LC1 contacts the switching restricting portion 114 of the restricting member RG1. Due to this contact, the operation unit 14 cannot reach the switching operation position. As a result, the operation of shifting the operation unit 14 to the pressed position is hindered. Even if the operation unit 14 is pressed, the operation unit 14 cannot be set to the pressed position. Thus, the regulating member RG1 in the first state J1 regulates the switching from the raw water to the purified water by the switching mechanism.

  Note that the water discharge head 8 has a holding contact portion 296 that contacts the regulating member RG1 in the first state J1 (see FIG. 3B). In the present embodiment, the holding contact portion 296 is the slide protrusion 106f (see FIGS. 13A and 13C). In the first state J1, the holding contact part 296 is in contact with the first state holding part 116 (see FIG. 6C) of the regulating member RG1. The contact between the first state holding portion 116 and the holding contact portion 296 is configured to prevent rotation of the regulating member RG1 in the first direction caused by the switching restricting portion 114 being pushed by the interlocking contact portion LC1. Have been. In FIG. 3B, the switching member 114 is pushed by the interlocking contact portion LC1, and the regulating member RG1 tries to rotate clockwise. However, the switching between the first state holding portion 116 and the holding contact portion 296 occurs. The contact prevents this clockwise (first direction) rotation.

  FIGS. 16A and 16B show the regulating member RG1, the transmitting member TR1, the interlocking contact portion LC1, and the like when the water purification cartridge PC1 is mounted. 16A and 16B, the illustration of the receiving portion forming member 106 is omitted. As shown in FIG. 16A, in this mounted state, the regulating member RG1 is in the second state J2. The water purification cartridge PC1 mounted at the regular position presses the transmission member TR1 forward. That is, the downstream end surface 212 of the water purification cartridge PC1 presses the cartridge contact surface 254 of the transmission member TR1. Due to this pressing, the transmission member TR1 moves forward. Due to this pressing, the transmission member TR1 moves to the front position P2 ahead of the rear position P1. With the movement to the front position P2, the transmission member TR1 rotates the regulating member RG1. When the release contact surface 260 of the transmission member TR1 presses the restriction release contact portion 112 of the restriction member RG1, the restriction member RG1 rotates. This rotation is a rotation in a second direction opposite to the first direction. The holding contact portion 296 does not prevent the regulation member RG1 in the first state J1 from rotating in the second direction. Thus, the transmission member TR1 moves the regulating member RG1 to the second state J2 by moving to the front position P2. The transition from the first state J1 to the second state J2 is achieved by rotation of the regulating member RG1 around the shaft 110. This rotation is performed against the urging force of the urging member 104.

  As shown in FIG. 16B, in a state where the regulating member RG1 is in the second state J2, the operation unit 14 is allowed to shift from the protruding position to the pushing position. Even if the operation part 14 reaches the switching operation position, the interlocking contact part LC1 is not interfered by the regulating member RG1. That is, the end surface 132 of the interlocking contact portion LC1 does not contact the switching restricting portion 114 of the restricting member RG1. As a result, the operation unit 14 is allowed to shift to the pushed position, and the purified water discharge state is achieved. As described above, the regulating member RG1 in the second state J2 allows switching from raw water to purified water by the switching mechanism.

  The switching restricting portion 114 of the restricting member RG1 is at the first position in the first state J1, and is at the second position in the second state J2. In the present embodiment, the mutual transition between the first position and the second position is achieved by rotation of the regulating member RG1. In the process of switching from raw water to purified water by the switching mechanism, the switching restricting section 114 at the first position comes into contact with the interlocking contact portion LC1 that interlocks with the switching mechanism (see FIG. 15B). The switching restricting portion 114 at the second position does not abut on the interlocking abutting portion LC1 in the process of switching from raw water to purified water by the switching mechanism (see FIG. 16B).

  The method of transition between the first state J1 and the second state J2 is not limited to the rotation of the regulating member RG1. 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 DR1 for shifting the regulation member from the first state J1 to the second state J2. In the above-described embodiment, the downstream end surface 212 (the partitioning portion 214) is the restriction release portion DR1 (see FIGS. 8 and 16A and 16B).

  The regulation release section DR1 is a surface facing forward. In a front view of the water purification cartridge PC1 as viewed from the front (FIG. 9B), there is a regulation release section DR1. The restriction release section DR1 is located upstream of the first annular packing s1. The restriction release part DR1 is located downstream of the second annular packing s2. It is located between the first annular packing s1 and the second annular packing s2. The regulation release section DR1 is arranged in the purified water flow path WJ. The regulation release section DR1 faces the purified water flow path WJ.

  The restriction release section DR1 contacts the transmission member TR1. As shown in FIG. 16A, when the water purification cartridge PC1 is mounted at the regular position, the regulation release unit DR1 presses the transmission member TR1 forward. That is, the regulation release section DR1 presses the cartridge contact surface 254 of the transmission member TR1. Due to this pressing, the transmission member TR1 moves forward. Due to this pressing, the transmission member TR1 moves to the front position P2 ahead of the rear position P1. With the movement to the front position P2, the transmission member TR1 rotates the regulating member RG1. When the release contact surface 260 of the transmission member TR1 presses the restriction release contact portion 112 of the restriction member RG1, the restriction member RG1 rotates. The regulation release section DR1 does not directly contact the regulation member RG1. The regulation release unit DR1 causes the regulation member RG1 to transition to the second state J2 via the transmission member TR1.

  In switching from raw water to purified water, the raw water cutoff valve V1 is closed. At the moment when the raw water cutoff valve V1 is closed and the flow of the raw water is cut off, a water hammer or a high water pressure occurs. This water hammer or high water pressure propagates through the raw water flow path WG to the upstream side starting from the vicinity of the raw water cutoff valve V1.

  The same applies to switching from purified water to raw water. In switching from purified water to raw water, the purified water cutoff valve V2 is closed. At the moment when the water purification shutoff valve V2 is closed and the flow of the purified water is interrupted, a water hammer or a high water pressure occurs. This water hammer or high water pressure propagates to the upstream side of the purified water flow path WJ, starting from the vicinity of the purified water cutoff valve V2.

  The water hammer or the high water pressure reaches the downstream side of the tip 170 of the water purification cartridge PC1. The water hammer or high water pressure reaches the distal occlusion outer surface 196 and exerts pressure on the distal occlusion outer surface 196. This pressure causes the water purification cartridge PC1 to swing (vibrate). Due to this swing, the transmission member TR1 and the regulation member RG1 also vibrate in conjunction with the movement of the water purification cartridge PC1. Due to these vibrations, sticking between members can be suppressed.

  When the regulating member RG1 is disposed in the raw water flow path WG, dirt or the like adheres to the regulating member RG1, and an operation failure is likely to occur. Similarly, when the regulation release section DR1 is disposed in the raw water flow path WG, dirt or the like adheres to the regulation release section DR1, and an operation failure is likely to occur. In particular, when water pipes and the like are repaired after installation of a water faucet device in a kitchen or the like, dirt and the like contained in raw water increases, and the problem of malfunctions is likely to occur.

  In the water discharge head 8, the regulating member RG1 is disposed in the purified water flow path WJ. Therefore, dirt and the like hardly adhere to the regulating member RG1. Dirt and the like hardly adhere to the regulation release contact portion 112 and the switching regulation portion 114 of the regulation member RG1. Further, dirt and the like hardly adhere to the shaft portion 110 of the regulating member RG1. A regulating member supporting portion 106e (see FIG. 13A) that rotatably supports the shaft portion 110 is also disposed in the water purification passage WJ1, and dirt and the like hardly adhere. Therefore, an operation failure caused by the regulating member RG1 is suppressed.

  In the water discharge head 8, the regulation release section DR1 is disposed in the purified water flow path WJ. Therefore, dirt and the like hardly adhere to the regulation release section DR1. Therefore, an operation failure caused by the regulation release section DR1 is suppressed.

  In the water discharge head 8, the transmission member TR1 is disposed in the purified water flow path WJ. Therefore, dirt and the like hardly adhere to the transmission member TR1. Dirt and the like hardly adhere to the rear extending portion 252, the cartridge contact surface 254, the guide hole 256, and the release contact surface 260. Therefore, operation failure due to the transmission member TR1 is suppressed.

  In the water discharge head 8, the interlocking contact part LC1 is arranged in the purified water flow path WJ. Therefore, dirt and the like hardly adhere to the interlocking contact portion LC1. Dirt and the like hardly adhere to the end surface 132 of the interlocking contact portion LC1. Therefore, an operation failure caused by the interlocking contact portion LC1 is suppressed.

  In the water discharge head 8, a contact portion of each member related to regulation of switching from raw water to purified water and a contact portion of each member related to release of the regulation are arranged in the purified water flow path WJ. For this reason, malfunctions related to the regulation and the cancellation of the regulation are suppressed.

  The regulating member RG1 is arranged downstream of the water purification cartridge PC1. With the arrangement of the regulating member RG1 in the water purification channel WJ, it is conceivable that the downstream side of the water purification cartridge PC1 is also used as the water purification channel WJ. However, in this case, the vibration of the water purification cartridge PC1 is reduced. As described above, the water hammer or the high water pressure occurs when the raw water shutoff valve V1 is shut off and also when the purified water shutoff valve V2 is shut off. However, the water hammer or the high water pressure occurs when the raw water shutoff valve V1 is shut off. , Water hammer or water pressure is large. That is, the water hammer or the water pressure is larger in the raw water flow path WG than in the purified water flow path WJ. By configuring the distal end closed outer surface 196 so as to face the raw water flow path WG, the water hammer or the water pressure can be increased, and the vibration of the water purification cartridge PC1 and members associated therewith can be promoted.

  As described above, the concave portion 176 is provided on the distal end closed outer surface 196 (the outer surface of the distal end portion 170). As compared to a flat surface or the like without a concave portion, the concave portion 176 can efficiently capture water hammer or high water pressure. The concave portion 176 can promote the vibration of the water purification cartridge PC1 and the members associated therewith.

  The raw water passage WG1 extends in the radial direction. By providing the concave portion 176, the water flow in the raw water passage WG1 extending along the radial direction can be effectively captured. The concave portion 176 can effectively capture a water hammer or a high water pressure in the raw water passage WG1 extending along the radial direction. Therefore, the vibration of the water purification cartridge PC1 and the members linked thereto can be promoted.

  In order to realize a configuration in which the distal end closed outer surface 196 faces the raw water flow path WG while the regulating member RG1 is disposed in the purified water flow path WJ, the water discharging head 8 has the distal closed outer surface 196 on the downstream side of the distal closed outer surface 196. A facing raw water passage WG1 is provided (see FIG. 14). The downstream side of the raw water passage WG1 is a purified water passage WJ. The raw water passage WG1 and the purified water passage WJ located downstream thereof are separated by a partition wall 290. The partition 290 is located downstream of the raw water passage WG1. On the downstream side of the partition wall 290, the purified water flow path WJ and the regulating member RG1 are arranged. In the present embodiment, the partition 290 is formed by the receiving portion forming member 106 (see FIG. 13C).

  Thus, the raw water flow path WG and the partition 290 are provided between the regulating member RG1 and the water purification cartridge PC1. The regulating member RG1 is separated from the water purification cartridge PC1. By providing the transmission member TR1, the raw water flow path WG and the partition wall 290 can be provided between the regulating member RG1 provided in the purified water flow path WJ and the purified water cartridge PC1. The base 250 of the transmission member TR1 is located downstream of the raw water flow path WG and the partition 290. The cartridge contact surface 254 of the transmission member TR1 is located on the upstream side of the distal end closed outer surface 196.

  As shown in FIG. 14, the regulation release section DR1 of the water purification cartridge PC1 is located on the upstream side of the distal end closed outer surface 196. By providing the restriction release part DR1 at a position different from the distal end closure outer surface 196, the restriction release part DR1 can be arranged in a flow path different from that of the distal end closure outer surface 196.

  The restriction release part DR1 is arranged between the first annular packing s1 and the second annular packing s2. Further, the water purification outlet 240 is provided between the first annular packing s1 and the second annular packing s2. The first annular packing s1 and the second annular packing s2 partition the raw water flow path WG and the purified water flow path WJ. Therefore, the regulation release part DR1 can be disposed in the purified water flow path WJ while the distal end closed outer surface 196 is disposed in the raw water flow path WG. By providing the regulation release section DR1 in the purified water flow path WJ, it is easy to provide the transmission member TR1 and the regulation member RG1 in the purified water flow path WJ.

  As shown in FIG. 11, the purified water outlet hole 240 has an outlet opening edge 242. The outlet opening edge 242 has a radially inner edge 242a and a radially outer edge 242b. The radial inner edge 242a and the radial outer edge 242b are coaxially arranged. The radial inner edge 242a is circular. The radial outer edge 242b is circular. The radial outer edge 242b is located radially outward of the radial inner edge 242a. The radial outer edge 242b is located upstream of the radial inner edge 242a.

  The regulation release section DR1 is provided adjacent to the purified water outlet hole 240 that connects the purified water flow path WJ (the purified water passage WJ1) of the connection receiving section 274 with the purified water flow path WJ inside the purified water cartridge PC1. The restriction release portion DR1 is a surface extending radially outward from the radially outer edge 242b. As described above, the restriction release portion DR1 is the downstream end surface 212 (the partitioning portion 214) and is an annular surface. The radial inner edge of the restriction release portion DR1 that is an annular surface constitutes the radial outer edge 242b of the outlet opening edge 242. In this configuration, the regulation release part DR1 can be formed at a middle position on the upstream side of the distal end closed outer surface 196 while securing the cross-sectional area of the purified water outlet hole 240.

  As shown in FIG. 11, the connection end portion 152 includes a purified water outlet hole 240, a first annular packing s <b> 1 located downstream of the purified water outlet hole 240, and a second annular member located upstream of the purified water outlet hole 240. And a packing s2. The outer diameter G1 of the first annular packing s1 is smaller than the outer diameter G2 of the second annular packing s2. With this configuration, it is easy to form the restriction release portion DR1 between the first annular packing s1 and the second annular packing s2. With this configuration, the restriction release part DR1 can be formed while suppressing the complexity of the shape of the water purification cartridge PC1, the increase in cost, and the decrease in flow rate.

  In the present embodiment, the regulation release section DR1 is composed of a plurality of division sections 214. The restriction release portions DR1 are annularly distributed (see FIG. 9B). On the other hand, the plurality of cartridge contact surfaces 254 of the transmission member TR1 are arranged along the circumferential direction. Therefore, even if the circumferential position (phase) of the water purification cartridge PC1 changes, the cartridge contact surface 254 can stably contact the regulation release part DR1.

  The number of the rear extending portions 252 is not limited. The number of the rear extending portions 252 may be one or two. From the viewpoint of stable contact with the restriction release portion DR1, the number of the rear extension portions 252 is preferably three or more. If the number of the rear extending portions 252 is excessive, the flow rate of the purified water may decrease when the rear extending portions 252 are arranged in the purified water flow passage WJ. In this respect, the number of the rear extending portions 252 is preferably equal to or less than 8, more preferably equal to or less than 6, and even more preferably equal to or less than 4.

  In the above embodiment, O-rings are used as the annular packings s1 and s2. The cross-sectional shape of the O-ring is circular. The cross-sectional shape of the annular packing need not be circular. For example, an O-ring having an elliptical cross section may be used as the annular packing. The annular packing is not limited to the O-ring. Further, the 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. Note that 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 of sealing properties (water tightness).

  As a material of the regulating member RG1, a resin or a metal is used. When the material is metal, sintering, casting, or forging is preferable as the manufacturing method of the regulating member RG1 from the viewpoint of cost. 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.

  The material of the transmission member TR1 includes resin or metal. From the viewpoint of cost, when the material is metal, sintering, casting, or forging is preferable as the method of manufacturing the transmission member TR1. 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. Polyoxymethylene (POM) is particularly preferred when importance is placed on slidability with an adjacent member such as the regulating member RG1, and polyphenylene sulfide (PPS) is particularly preferred when importance is placed on strength.

  As a material of the regulation release section DR1 of the water purification cartridge PC1, 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 member including the restriction release part DR1. 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.

  As a material of the connection receiving portion 274, a resin or a metal is used. From the viewpoint of cost, when the material is metal, sintering, casting, or forging is preferable as a method for manufacturing a member including the connection receiving portion 274. 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 RG1 is not replaced. It is preferable that the regulating member RG1 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 RG1 is preferably 3 GPa or more, more preferably 5 GPa or more, and still more preferably 10 GPa or more. In consideration of the above preferable materials, the longitudinal elastic modulus of the material of the regulating member RG1 is preferably 30 GPa or less, more preferably 20 GPa or less, and even more preferably 15 GPa or less. It is preferable that the longitudinal elastic coefficient of the material of the regulating member RG1 is larger than the longitudinal elastic coefficient of the material of the regulation releasing portion DR1. The longitudinal elastic modulus of the material of the regulating member RG1 is preferably larger than the longitudinal elastic modulus of the material of the transmission member TR1.

  While the water purification cartridge PC1 is replaced every predetermined use period, the transmission member TR1 is not replaced. It is preferable that the transmission member TR1 used repeatedly for a long period of time has high slidability, high rigidity and high wear resistance. In respect of having high rigidity and high wear resistance, the longitudinal elastic modulus of the material of the transmission member TR1 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 2.0 GPa. In consideration of the above preferable materials, the longitudinal elastic modulus of the material of the transmission member TR1 is preferably 10 GPa or less, more preferably 7 GPa or less, and even more preferably 5 GPa or less. It is preferable that the longitudinal elastic coefficient of the material of the transmission member TR1 is larger than the longitudinal elastic coefficient of the material of the restriction release part DR1.

  As a configuration of the water purification cartridge PC1, it is preferable that the longitudinal elastic coefficient EM1 of the material of the regulation release section DR1 be smaller than the longitudinal elastic coefficient EM2 of the material of the counterpart part with which the regulation release section DR1 contacts. This can prevent damage or abrasion of a partner site (for example, the transmission member TR1) that is used repeatedly for a long time. From this viewpoint, the value of the ratio (EM1 / EM2), which is the ratio between EM1 and EM2, is preferably 0.9 or less, more preferably 0.8 or less, and particularly preferably 0.7 or less. If the value of the ratio (EM1 / EM2) is too small, the strength and wear of the water purification cartridge PC1 are likely to be excessively reduced. Therefore, from this viewpoint, the value of the ratio (EM1 / EM2) is preferably 0.2 or more, more preferably 0.4 or more, and particularly preferably 0.5 or more.

  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 water purification cartridge PC1 of the above embodiment, the intermediate portion 150 has the transmission portion 151 that can transmit water from the outer peripheral surface of the water purification cartridge PC1 to the inside. The configuration of the intermediate section 150 is not limited to this mode. 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, the inflow of water from the rear end of the water purification cartridge PC1 may be allowed. For example, an inflow port may be provided at an upstream end (rear end) of the water purification cartridge PC1. This inflow port may be provided in the rear formation part 154. Water can flow into the water purification cartridge PC1 from the inflow port, pass through the permeation section, and reach the connection end 152.

  In the above embodiment, the water purification function unit is a permeation unit, and purified water is generated by transmitting raw water through the permeation 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: A 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 with 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.

  In the present application, “chlorine” is a concept including residual chlorine in tap water. This residual chlorine includes free residual chlorine and combined residual chlorine. The free residual chlorine includes hypochlorous acid and hypochlorite ion. Bound residual chlorine includes monochloramine, dichloramine and trichloramine. When chlorine gas is dissolved in water for the purpose of disinfecting the water, these residual chlorines can be generated.

  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 part 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 non-removably 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 mounted. However, when the restriction 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.

Regarding the above-described embodiment, the following supplementary notes are disclosed.
[Appendix 1]
A discharge port,
A raw water channel,
A water purification channel,
A switching mechanism capable of switching 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 regulation release section that shifts the regulation member from the first state to the second state, and a water purification cartridge having a non-water-permeable front end closed outer surface;
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. Is configured to be in the second state,
The tip obstruction outer surface faces the raw water flow path,
A water discharge head with a water purification function, wherein the regulating member is disposed in the water purification flow path.
[Appendix 2]
It further comprises a transmission member capable of mutual transition between the front position and the rear position,
The transmission member moves to the front position by mounting the water purification cartridge,
2. The water discharge head according to claim 1, wherein the regulating member shifts to the second state by the transmission member moved to the front position.
[Appendix 3]
The restriction release unit is located upstream of the outer surface of the distal end occlusion,
3. The water discharge head according to claim 2, wherein when the water purification cartridge is mounted, the restriction release unit presses the transmission member, and the transmission moves the transmission member to the front position by the pressing.
[Appendix 4]
The cartridge mounting portion has a connection receiving portion,
The water purification cartridge has a connection end connected to the connection receiving portion,
The connection end has a purified water outlet hole, a first annular packing located downstream of the purified water outlet hole, and a second annular packing located upstream of the purified water outlet hole,
An outer diameter G1 of the first annular packing is smaller than an outer diameter G2 of the second annular packing,
The water discharge head according to attachment 3, wherein the restriction release portion is formed between the first annular packing and the second annular packing.
[Appendix 5]
On the downstream side of the water purification cartridge, a raw water passage forming the raw water flow path is provided,
The tip obstruction outer surface faces the raw water passage,
A partition wall is provided on the downstream side of the raw water passage,
The water discharge head according to any one of supplementary notes 1 to 4, wherein the water purification channel and the regulating member are arranged downstream of the partition.
[Appendix 6]
A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification cartridge comprising: a water purification function unit; a regulation release unit that shifts the regulation member from the first state to the second state; and a non-water-permeable front end closed outer surface facing the raw water flow path. .
[Appendix 7]
The water discharge head further includes a transmission member capable of mutual transition between a front position and a rear position,
The transmission member is moved to the front position by the restriction release unit with the mounting of the water purification cartridge,
7. The water purification cartridge according to claim 6, wherein the regulating member can be shifted to the second state J2 by the transmission member moved to the front position.
[Appendix 8]
A faucet device comprising the water discharge head according to any one of supplementary notes 1 to 5.

  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.

2 faucet device 4 body part 6 lever handle 8 water discharge head 14 operating part 106 receiving part forming member 106f slide protrusion 112 regulation Member regulation release contact portion 114: regulation member switching regulation portion 116: first state holding portion of regulation member 132: end face of interlocking contact portion 152: connection end portion of water purification cartridge 170 ································································································ ··· Connection receiving part 290 ··· Partition wall s1 ··· first annular packing s2 ··· second annular packing RG1 ··· regulation member DR1 ··· regulation release part TR1 ··· transmission member LC1 ··· Interlocking contact Part PC1 Water purification cartridge J1 First state of regulating member J2 Second state of regulating member P1 Rear position (transmission member)
P2: Front position (transmission member)
WJ: Purified water channel WJ1: Purified water channel WG: Raw water channel WG1: Raw water channel

Claims (26)

A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, and a non-water-permeable front end closed outer surface facing the raw water flow path;
The water purification cartridge, wherein the regulation release section faces the water purification flow path. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, and a non-water-permeable front end closed outer surface facing the raw water flow path;
The water purification cartridge, wherein the restriction release portion is a surface facing forward, and the restriction release portion is visually recognized in a front view of the water purification cartridge viewed from the front. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, and a non-water-permeable front end closed outer surface facing the raw water flow path;
The water purification cartridge, wherein the regulation release section is located on an upstream side of the outer surface of the front end blockage. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, and a non-water-permeable front end closed outer surface facing the raw water flow path;
The water purification cartridge, wherein the restriction release portion is a surface extending in a radial direction. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, and a non-water-permeable front end closed outer surface facing the raw water flow path;
The water purification cartridge, wherein the outer surface of the closed end has a concave portion. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, a non-water-permeable front end closed outer surface facing the raw water flow path, and a water purification outlet hole. And
A water purification cartridge in which the front end closed outer surface is located downstream of the water purification outlet hole. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, a non-water-permeable front end closed outer surface facing the raw water flow path, and a water purification outlet hole. And
The water purification cartridge, wherein the regulation release part is adjacent to the water purification outlet hole. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, a non-water-permeable front end closed outer surface facing the raw water flow path, and a water purification outlet hole. And
The water purification outlet hole has an outlet opening edge,
The outlet opening edge has a radially inner edge and a radially outer edge,
The water purification cartridge, wherein the radially outer edge is located radially outward of the radially inner edge.   The water purification cartridge according to claim 8, wherein the radially outer edge is located on an upstream side of the radially inner edge.   The water purification cartridge according to claim 8, wherein the restriction release portion is a surface extending radially outward from the radially outer edge. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
It has a water purification function part and a connection end part,
The connection end portion is a first annular packing, a second annular packing, a regulation release section for shifting the regulation member from the first state to the second state, and a non-water-permeable surface facing the raw water flow path. And has a closed water outlet hole,
The water purification cartridge, wherein the water purification outlet is located between the first annular packing and the second annular packing. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
It has a water purification function part and a connection end part,
The connection end portion is a first annular packing, a second annular packing, a regulation release section for shifting the regulation member from the first state to the second state, and a non-water-permeable surface facing the raw water flow path. And has a closed water outlet hole,
A water purification cartridge wherein the outer diameter G1 of the first annular packing is smaller than the outer diameter G2 of the second annular packing. The outer diameter G1 is 7 mm or more and 18 mm or less;
The water purification cartridge according to claim 12, wherein the difference (G2-G1) is 3 mm or more and 15 mm or less. The outer diameter G2 is 12 mm or more and 25 mm or less,
The water purification cartridge according to claim 12, wherein the difference (G2-G1) is 3 mm or more and 15 mm or less. The outer diameter G1 is 7 mm or more and 18 mm or less;
The water purification cartridge according to claim 12, wherein G2 / G1 is 1.2 or more and 2.5 or less. The outer diameter G2 is 12 mm or more and 25 mm or less,
The water purification cartridge according to claim 12, wherein G2 / G1 is 1.2 or more and 2.5 or less. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
It has a water purification function part and a connection end part,
The connection end portion is a first annular packing, a second annular packing, a regulation release section for shifting the regulation member from the first state to the second state, and a non-water-permeable surface facing the raw water flow path. And has a closed water outlet hole,
The water purification cartridge, wherein the restriction release unit is disposed between the first annular packing and the second annular packing.   The water purification cartridge according to claim 17, wherein the restriction release section is located upstream of the first annular packing and downstream of the second annular packing. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates the switching to raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
It has a water purification function part and a connection end part,
The connection end portion is a restriction release section that causes the restriction member to transition from the first state to the second state, a non-water-permeable front end closed outer surface facing the raw water flow path, a water purification outlet hole, And a connection extending portion of
A water purification cartridge in which the water purification outlet hole is formed between the connection extending portions adjacent in the circumferential direction.   20. The water purification cartridge according to claim 19, wherein the restriction release part is formed by arranging in a circumferential direction division parts divided by the connection extending part.   The said restriction release part has the part continuously formed in the whole circumferential direction without a break, and the part in which the division | segmentation part divided by the said connection extension part was arranged in the circumferential direction. Water purification cartridge.   22. When the radial width of the restriction release portion is Q1 and the radial width of the continuously formed portion is Q2, Q2 / Q1 is 0.2 or more and 0.9 or less. The described water purification cartridge.   The water purification cartridge according to any one of claims 20 to 22, wherein a diameter at a radial center position of the partitioning portion is 10 mm or more and 22 mm or less.   The water purification cartridge according to any one of claims 19 to 23, wherein a width of the connection extending portion is 0.5 mm or more and 5.0 mm or less. The connection extending portion has an extending portion downstream surface that is a surface on the downstream side thereof,
25. The water purification cartridge according to any one of claims 19 to 24, wherein the downstream surface of the extending portion extends radially inward toward the downstream side. A discharge port, a switching mechanism that can switch between water discharged from the discharge port and raw water, and a mutual transition between a first state and a second state; and in the first state, water is purified from the raw water by the switching mechanism. A regulating member that regulates switching to the purified water from the raw water by the switching mechanism in the second state, a purified water flow path in which the regulating member is disposed, a raw water flow path, and a cartridge mounted. A water purification cartridge attachable to a water discharge head with a water purification function comprising:
A water purification function unit, a regulation release unit that shifts the regulation member from the first state to the second state, and a non-water-permeable front end closed outer surface facing the raw water flow path;
A water purification cartridge, wherein a radial width Q1 of the restriction release portion is 1.0 mm or more and 6.0 mm or less.

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