JP6999126B2 - Faucet device - Google Patents

Description

The present invention relates to a faucet device.

A shower head with a water purification function that has a built-in water purification cartridge and can switch between raw water and purified water has been proposed. Japanese Patent No. 4653846 discloses a shower head in which a ball valve is used as a flow path switching valve. Japanese Patent No. 5746492 discloses a faucet with a water purification function having a raw water valve having a plurality of raw water faucet rods and a water purification valve connected to the raw water valve via a connecting member.

Japanese Patent No. 4653846 Japanese Patent No. 5746492

In the technique described in Japanese Patent No. 4653846, a ball valve is used as a flow path switching valve. In this ball valve, since the packing pedestal, the ball valve body, the valve body support member, and the spring are arranged perpendicular to the movable direction of the switching button, the head tends to be large in the vertical direction. Further, since the two ball valves are arranged in parallel, the head tends to be further enlarged.

In the technique described in Japanese Patent No. 5746492, since a plurality of raw water valves are arranged in parallel, the head tends to be large. Further, since a plurality of raw water valves are connected to a single water purification valve, the structure is complicated and the reliability and durability tend to decrease.

An object of the present invention is to provide a small and highly reliable faucet device.

A preferable faucet device according to the present invention is a water guide portion having a built-in water purification material, a water discharge portion located on the downstream side of the water guide portion and having a discharge port, and a water discharge port that permeates the water purification material to the discharge port. It has a water purification flow path leading to the water purification material and a raw water flow path leading to the discharge port without penetrating the water quality purification material. The water discharge unit includes a switching valve that switches whether the water discharged from the discharge port is raw water or purified water, an adjacent portion adjacent to the switching valve, and an operation unit that can move the switching valve along a specific direction. Have. The switching valve has a raw water valve portion that can open and close the raw water flow path and a water purification valve portion that can open and close the purified water flow path. Due to the movement of the switching valve in the specific direction, the raw water valve portion is in the closed state and the water purification valve portion is in the open state, and the raw water valve portion is in the open state and the water purification valve portion is in the open state. Mutual transition from the closed raw water discharge state is possible. The raw water valve portion and the water purification valve portion are arranged along the same straight line extending in the specific direction. The raw water valve portion and the water purification valve portion are integrally moved along the specific direction by the operation of the operation portion.

Preferably, the adjacent portion has an inclined surface for a water purification valve that is inclined with respect to the specific direction. Preferably, the water purification valve portion has a water purification seal member. Preferably, the water purification valve portion is closed by the contact between the inclined surface for the water purification valve and the water purification seal member. In addition, instead of the inclined surface for the water purification valve, a vertical surface for the water purification valve which is perpendicular to the specific direction may be adopted. The vertical surface for the water purification valve is perpendicular to the specific direction. The concept of combining the inclined surface for a water purification valve and the vertical surface for a water purification valve is also called a contact surface for a water purification valve.

Preferably, the adjacent portion has an inclined surface for a raw water valve that is inclined with respect to the specific direction. Preferably, the raw water valve portion has a raw water sealing member. Preferably, the raw water valve portion is closed by the contact between the raw water valve inclined surface and the raw water sealing member. In addition, instead of the inclined surface for the raw water valve, a vertical surface for the raw water valve which is perpendicular to the specific direction may be adopted. The vertical surface for the raw water valve is perpendicular to the specific direction. The concept of combining the inclined surface for the raw water valve and the vertical surface for the raw water valve is also called the contact surface for the raw water valve.

Preferably, in the purified water discharge state, a raw water pool space is formed between the raw water valve portion and the adjacent portion. Preferably, the faucet device has, as the pressure receiving surface facing the raw water pool space, the switching valve, the tip side pressure receiving surface on which the force due to the water pressure of the raw water acts toward the faucet tip, and the said in the purified water discharge state. It has a pressure receiving surface on the main body side where the force due to the water pressure of the raw water acts toward the main body of the faucet. Preferably, the raw water seal member is configured so as to be able to abut on the faucet main body side of the raw water valve contact surface (raw water valve inclined surface and raw water valve vertical surface). Preferably, the area Ms of the pressure receiving surface on the distal end side is larger than the area Mh of the pressure receiving surface on the main body side.

Preferably, the faucet device has an inclined surface for a water purification valve that is inclined with respect to the specific direction, an insertion space portion provided on the faucet main body side of the inclined surface for the water purification valve, and an insertion space portion. It further has an arranged support elastic body. Preferably, the water purification valve portion has a water purification seal member and an insertion portion that can enter the insertion space portion. Preferably, the insertion portion is urged toward the tip of the faucet by the supporting elastic body.

Preferably, the insertion space portion is a space formed inside the inner surface of the cylinder. Preferably, the insertion portion has a guide portion that can slide with respect to the inner surface of the cylinder.

Preferably, in the purified water discharge state, a raw water pool space is formed between the raw water valve portion and the adjacent portion. Preferably, as the pressure receiving surface facing the raw water pool space, the switching valve has the tip side pressure receiving surface on which the force due to the water pressure of the raw water acts on the faucet tip side in the purified water discharge state, and the said in the purified water discharge state. It has a pressure receiving surface on the main body side where the force due to the water pressure of the raw water acts on the main body side of the faucet. Preferably, the area Ms of the pressure receiving surface on the distal end side and the area Mh of the pressure receiving surface on the main body side are substantially the same.

A small and highly reliable faucet device can be obtained.

FIG. 1 is a side view of the faucet device according to the first embodiment. In FIG. 1, the operation unit is in the push-in position. FIG. 2 is a cross-sectional view of the faucet device of FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. FIG. 4 is a side view of the faucet device according to the first embodiment. In FIG. 4, the operation unit is in the pop-out position. FIG. 5 is a cross-sectional view of the faucet device of FIG. FIG. 6 is a cross-sectional view taken along the line AA of FIG. FIG. 7 is an exploded side view of the faucet device of FIG. FIG. 8 is an exploded cross-sectional view of the faucet device of FIG. FIG. 9 is an exploded plan view of the faucet device of FIG. 10 (a) is a perspective view of the shaft body of the raw water valve portion in the first embodiment, FIG. 10 (b) is a plan view of the shaft body, and FIG. 10 (c) is a side view of the shaft body. Is. 11 (a) is a perspective view of the shaft body of the water purification valve portion in the first embodiment, FIG. 11 (b) is a plan view of the shaft body, and FIG. 11 (c) is a side view of the shaft body. Is. FIG. 12 is a side view of the faucet device according to the second embodiment. In FIG. 12, the operation unit is in the push-in position. FIG. 13 is a cross-sectional view of the faucet device of FIG. FIG. 14 is a cross-sectional view taken along the line AA of FIG. FIG. 15 is a side view of the faucet device according to the second embodiment. In FIG. 15, the operation unit is in the pop-out position. FIG. 16 is a cross-sectional view of the faucet device of FIG. FIG. 17 is a cross-sectional view taken along the line AA of FIG. FIG. 18 is an exploded perspective view of the faucet device of FIG. Some parts are shown as a cross-sectional perspective view. FIG. 19 is a cross-sectional view of a main part of the faucet device of the second embodiment. FIG. 19 is a cross-sectional view when the operation unit is in the pop-out position. FIG. 20 is a cross-sectional view of a main part of the faucet device of the second embodiment. FIG. 20 is a cross-sectional view when the operation unit is in the maximum pushing position. FIG. 21 is a cross-sectional view of a main part of the faucet device of the second embodiment. FIG. 21 is a cross-sectional view when the operation unit is in the pushed-in position. 22 (a) is a perspective view of the shaft body of the raw water valve portion in the second embodiment, FIG. 22 (b) is a plan view of the shaft body, and FIG. 22 (c) is a side surface of the shaft body. It is a figure. 23 (a) is a perspective view of the shaft body of the water purification valve portion in the second embodiment, FIG. 23 (b) is a plan view of the shaft body, and FIG. 23 (c) is a side surface of the shaft body. It is a figure. FIG. 24 is a side view of the faucet device according to the third embodiment. In FIG. 24, the operation unit is in the push-in position. FIG. 25 is a cross-sectional view of the faucet device of FIG. 24. FIG. 26 is a cross-sectional view taken along the line AA of FIG. 24. FIG. 27 is a side view of the faucet device according to the third embodiment. In FIG. 27, the operation unit is in the pop-out position. FIG. 28 is a cross-sectional view of the faucet device of FIG. 27. FIG. 29 is a cross-sectional view taken along the line BB of FIG. 27. 30 is an exploded side view, an exploded sectional view, and an exploded plan view of the faucet device of FIG. 24, in order from the top. 31 (a) is a perspective view of the shaft body of the switching valve in the third embodiment, FIG. 31 (b) is a plan view of the shaft body, and FIG. 31 (c) is a side view of the shaft body. be. FIG. 32 is a side view of the faucet device according to the fourth embodiment. In FIG. 32, the operation unit is in the push-in position. 33 is a cross-sectional view of the faucet device of FIG. 32. FIG. 34 is a cross-sectional view taken along the line AA of FIG. 32. FIG. 35 is a side view of the faucet device according to the fourth embodiment. In FIG. 35, the operation unit is in the pop-out position. FIG. 36 is a cross-sectional view of the faucet device of FIG. 35. FIG. 37 is a cross-sectional view taken along the line AA of FIG. 35. 38 is an exploded plan view, an exploded sectional view, and an exploded side view of the faucet device of FIG. 32 in order from the top. FIG. 39 is a cross-sectional view of a main part of the faucet device of the fourth embodiment. FIG. 39 is a cross-sectional view when the operation unit is in the pop-out position. FIG. 40 is a cross-sectional view of a main part of the faucet device of the fourth embodiment. FIG. 40 is a cross-sectional view when the operation unit is in the maximum pushing position. FIG. 41 is a cross-sectional view of a main part of the faucet device of the fourth embodiment. FIG. 41 is a cross-sectional view when the operation unit is in the pushed-in position. 42 (a) is a perspective view of the shaft body of the raw water valve portion in the fourth embodiment, FIG. 42 (b) is a plan view of the shaft body, and FIG. 42 (c) is a side surface of the shaft body. It is a figure. 43 (a) is a perspective view of the shaft body of the water purification valve portion in the fourth embodiment, FIG. 43 (b) is a plan view of the shaft body, and FIG. 43 (c) is a side surface of the shaft body. It is a figure. FIG. 44 is a cross-sectional view of a main part of the faucet device of the fifth embodiment. FIG. 44 is a cross-sectional view when the operation unit is in the pop-out position. FIG. 45 is a cross-sectional view of a main part of the faucet device of the fifth embodiment. FIG. 45 is a cross-sectional view when the operation unit is in the maximum pushing position. FIG. 46 is a cross-sectional view of a main part of the faucet device according to the fifth embodiment. FIG. 46 is a cross-sectional view when the operation unit is in the pushed-in position. FIG. 47 is an exploded plan view, an exploded sectional view, and an exploded side view of the faucet device of the fifth embodiment in order from the top. FIG. 48 (a) is a perspective view of the shaft body of the raw water valve portion according to the fifth embodiment, and FIG. 48 (b) is a perspective view of the shaft body viewed from another angle, FIG. 48 (b). c) is a side view of this shaft body. FIG. 49 (a) is a perspective view of the shaft body of the water purification valve portion according to the fifth embodiment, and FIG. 49 (b) is a perspective view of the shaft body viewed from another angle, FIG. 49 (b). c) is a side view of this shaft body. 50 (a) is a perspective view of the valve joint according to the fifth embodiment, FIG. 50 (b) is a perspective view of the valve joint as viewed from another angle, and FIG. 50 (c) is a perspective view of the valve joint. It is a side view of this valve joint. FIG. 51 is a partial cross-sectional perspective view showing a shaft body, a valve joint, a second switching case, a switching shaft, and the like in the assembled water discharge portion. This perspective view is a view seen from diagonally rearward. FIG. 52 is a partial cross-sectional perspective view showing a valve joint, a shaft body, a third switching case, and the like in the assembled water discharge portion. This perspective view is a view seen from diagonally forward. FIG. 53 is an enlarged cross-sectional view showing the vicinity of the raw water seal member. 54 (a) and 54 (b) are cross-sectional views for explaining the displacement and deformation of the sealing member due to the fluid. FIG. 55 is an enlarged cross-sectional view showing the seal structure of the modified example. FIG. 56 is an enlarged cross-sectional view showing a seal structure of another modified example. FIG. 57 is an enlarged cross-sectional view showing a seal structure of still another modified example.

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

[First Embodiment]
FIG. 1 is a side view of the faucet device 100 according to the first embodiment, and FIG. 2 is a cross-sectional view of the faucet device 100. FIG. 3 is a cross-sectional view taken along the line AA of FIG. In FIGS. 1 to 3, the operation button (described later) is in the pushed position.

4 is a side view of the faucet device 100, FIG. 5 is a cross-sectional view of the faucet device 100, and FIG. 6 is a cross-sectional view taken along the line AA of FIG. In FIGS. 4 to 6, the operation button (described later) is in the pop-out position.

The faucet device 100 is a faucet device with a water purification function capable of switching between raw water and purified water. In the faucet device 100, the relationship between the position of the operation button and the water discharge switching is as follows.
(1a) When the operation button is in the pushed position (button concave), purified water is discharged.
(1b) When the operation button is in the pop-out position (button convex), the raw water is discharged.

The faucet device 100 has a water guiding unit 102 and a water discharging unit 104. Although not shown in each cross-sectional view, the water guiding portion 102 has a cavity for arranging the water purification cartridge 106 and a water purification cartridge 106 inserted in the cavity. The water quality purification cartridge 106 is replaceable.

The water quality purification cartridge 106 has a water permeable portion 106a including a water quality purification material and a hollow portion 106b. The shape of the water permeable portion 106a is substantially cylindrical. Although not shown, a typical permeable portion has a water purification material, an outer filter layer and an inner filter layer. The water purification material contains, for example, activated carbon as a main component. For the outer filtration layer and the inner filtration layer, for example, a non-woven fabric is used. Ceramic having a sterilizing action may be adopted for the outer filtration layer and / or the inner filtration layer. An ion exchanger may be adopted for the outer filtration layer and / or the inner filtration layer. The outer filtration layer may be a plurality of layers. The inner filtration layer may be a plurality of layers.

The water permeable portion 106a can allow water to permeate. The raw water is purified by passing through the permeable portion 106a. The raw water permeates the water purification material from the outside of the water permeable portion 106a and reaches the hollow portion 106b to become purified water.

In the water guide portion 102, a gap flow path GW1 is formed between the inner surface defining the cavity portion and the water permeable portion 106a (outer surface). The gap flow path GW1 is a raw water flow path of the water conveyance portion 102. In the raw water discharge state, the raw water reaches the raw water flow path GW2 of the water discharge section 104 from the gap flow path GW1 without penetrating the water permeation section 106a. The raw water reaches the spout 110 from the raw water flow path GW2 and is discharged.

In the water guide portion 102, the hollow portion 106b of the water quality purification cartridge 106 is a water purification channel JW1. The water purification channel JW1 is a water purification channel of the water conveyance section 102. In the purified water discharge state, the purified water reaches the purified water channel JW2 of the water discharge unit 104 from the purified water channel JW1. The purified water reaches the spout 110 from the purified water channel JW2 and is discharged.

In the purified water discharge state, foreign matter or the like adheres to the outer surface of the water permeable portion 106a. However, this foreign matter or the like is discharged together with the raw water in the raw water discharge state. Therefore, clogging of the water purification cartridge 106 is suppressed. The water purification performance of the water purification cartridge 106 is maintained for a long period of time.

The faucet device 100 can be used by removing it from the faucet body. In this case, the water guiding portion 102 functions as a gripping portion.

The water discharge unit 104 is located on the downstream side of the water guide unit 102. The water discharge unit 104 constitutes the tip portion of the faucet device 100. The water discharge portion 104 is detachably attached to the water guide portion 102. When replacing the water quality purification cartridge, the water discharge part 104 is removed from the water guide part 102, the old water quality purification cartridge is pulled out from the faucet tip side, and the new water quality purification cartridge is inserted into the cavity from the faucet tip side. To.

The water guiding unit 102 and the water discharging unit 104 may be integrated.

The water spouting unit 104 has a spouting port 110. Water is discharged from the spout 110. Either purified water or raw water is discharged from the spout 110.

FIG. 7 is an exploded plan view of the water discharge portion 104. FIG. 8 is an exploded cross-sectional view of the water discharge portion 104. FIG. 9 is an exploded side view of the water discharge portion 104.

The water discharge unit 104 has an operation unit 120. The operation unit 120 is a push button. The push button 120 functions as a switching button for switching between the raw water flow path and the purified water flow path.

The water discharge unit 104 has an alternate operation type push button mechanism 130. By this push button mechanism 130, each time the push button 120 is pushed, the position of the push button 120 is switched between the first position (pop-out position) and the second position (push position).

As shown in FIGS. 7 to 9, the push button mechanism 130 includes a first switching top 132, a second switching top 134, a switching ring 136, a switching shaft 138, a switching cover 140, and a coil spring CS1. When the push button 120 moves in the front-rear direction, the first switching top 132 moves in the front-back direction together with the second switching top 134 and the switching shaft 138. The second switching top 134 rotates each time the button is pressed, and each rotation switches the axial position of the second switching top 134 with respect to the switching ring 136. As a result, the pushbutton 120 is held in two different positions (first and second positions).

The push button mechanism 130 is a thrust lock mechanism. This thrust lock mechanism is widely used as a button mechanism. The thrust lock mechanism is also used in ballpoint pens, for example, and allows the core of the ballpoint pen to be taken in and out. For example, Japanese Patent No. 3454756 and Japanese Patent No. 5721679 also employ this thrust lock mechanism. The push button mechanism 130 of the present embodiment is the same as the mechanism described in these patent publications.

Generally, as a so-called alternate operation type push button mechanism, a heart-shaped cam mechanism, a rotary cam mechanism, a ratchet cam mechanism, and the like are known. All of these mechanisms are known. Any of these mechanisms may be employed as the pushbutton mechanism 130. Any button mechanism that enables an alternate operation method can be adopted.

The details of the alternate operation of the push button mechanism 130 are as follows. When the operation unit 120 in the pop-out position (first position) is pressed, the operation unit 120 moves to the most pushed position (maximum push position: third position). When the pressing is released, the operation unit 120 moves from this maximum pushing position (third position) to the pushing position (second position) and stands still. This pushing position (second position) is maintained unless the pushing pressure is applied again. Next, when the operation unit 120 in the push-in position (second position) is pressed, the operation unit 120 moves to the maximum push-in position (third position). When the pressing is released, the operation unit 120 moves from this maximum pushing position (third position) to a pop-out position (first position) and stands still. In this way, each time the operation unit 120 is pressed, the operation unit 120 alternately stops at the pop-out position (first position) and the push-in position (second position), and at each mutual transition, the maximum push-in position is reached. (Third position) is passed. The movable range of the operation unit 120 is from the first position to the third position. The moving direction of the operation unit 120 is a specific direction (axial direction).

As described above, in the present application, the terms "front-back direction", "forward" and "rear" are used. The front in the front-rear direction means the faucet tip side (left side in FIG. 1). The rear in the front-rear direction means the faucet main body side (right side in FIG. 1). The front is in the opposite direction to the rear.

The faucet device 100 has a water purification flow path that permeates the water purification material and reaches the spout 110, and a raw water flow path that reaches the spout 110 without permeating the water purification material. Details of these purified water channels and raw water channels will be described later.

The water discharge unit 104 has a switching valve V1 for switching whether the water discharged from the water discharge port 110 is raw water or purified water. As shown in FIGS. 7 to 9, the switching valve V1 has a raw water valve portion VG capable of opening and closing the raw water flow path and a water purification valve portion VJ capable of opening and closing the purified water flow path.

The raw water valve portion VG and the water purification valve portion VJ are directly connected. The raw water valve portion VG and the water purification valve portion VJ may be indirectly connected via other members.

The raw water valve portion VG has a shaft body Z1 and a raw water sealing member S1. The raw water seal member S1 is an O-ring. The raw water valve portion VG has two raw water sealing members S1. The raw water seal member S1 is coaxial with the switching valve V1.

The water purification valve portion VJ has a shaft body Z2 and a water purification seal member S2. The purified water seal member S2 is an O-ring. The water purification valve portion VJ has one water purification seal member S2. The purified water seal member S2 is coaxial with the switching valve V1.

10 (a) is a perspective view of the shaft body Z1 of the raw water valve portion VG, FIG. 10 (b) is a plan view of the shaft body Z1, and FIG. 10 (c) is a side view of the shaft body Z1. The shaft body Z1 has a front end portion 160 that engages with the push button mechanism 130 (switching shaft 138) and a rear end portion 162 that engages with the shaft body Z2. Further, the shaft body Z1 has a first seal holding portion 164 to which the first raw water sealing member S11 is attached, and a second seal holding portion 166 to which the second raw water sealing member S12 is attached. The first seal holding portion 164 has a front flange 168 that supports the first raw water seal member S11 from the front, and a rear flange 170 that supports the first raw water seal member S11 from the rear. The second seal holding portion 166 has a front flange 172 that supports the second raw water seal member S12 from the front, and a rear flange 174 that supports the second raw water seal member S12 from the rear. The first seal holding portion 164 is located in front of the second seal holding portion 166. Further, the shaft body Z1 has a protrusion 176. A plurality (4) protrusions 176 are evenly arranged in the circumferential direction. The protrusion 176 is located behind the second seal holding portion 166.

11 (a) is a perspective view of the shaft body Z2 of the water purification valve portion VJ, FIG. 11 (b) is a plan view of the shaft body Z2, and FIG. 11 (c) is a side view of the shaft body Z2. The shaft body Z2 has a front end portion 190 that engages with the shaft body Z1 (rear end portion 162), and a seal holding portion 192 to which the water purification seal member S2 is attached. The seal holding portion 192 has a front flange 194 that supports the water purification seal member S2 from the front, and a rear flange 196 that supports the water purification seal member S2 from the rear.

As shown in each cross-sectional view (FIG. 2, FIG. 3, FIG. 5, FIG. 6), the shaft body Z1 is connected to the shaft body Z2. The shaft body Z2 is provided behind the shaft body Z1 (on the water-based main body side). Regardless of the operation of the operation unit 120, the relative positional relationship between the shaft body Z1 and the shaft body Z2 does not change. The shaft body Z1 and the shaft body Z2 are arranged along the same straight line extending in a specific direction. That is, the shaft body Z1 and the shaft body Z2 are arranged so that at least a part of the shaft body Z1 and the shaft body Z2 intersect this straight line. In the present embodiment, the specific direction coincides with the axial direction of the shaft body Z1. The specific direction coincides with the axial direction of the shaft body Z2. The straight line coincides with the central axis of the shaft body Z1. The straight line coincides with the central axis of the shaft body Z2. The shaft body Z1 and the shaft body Z2 are arranged coaxially.

The axial direction common to the shaft body Z1 and the shaft body Z2 is also referred to as "axis body axial direction" in the present application. In this embodiment, the specific direction coincides with the axis direction. When the shaft body is integrated between the raw water valve portion VG and the water purification valve portion VJ, the axial direction of the shaft body is the shaft body axial direction.

As shown in each cross-sectional view (FIG. 2, FIG. 3, FIG. 5, FIG. 6), the raw water valve portion VG has a shaft body Z1 and two raw water sealing members S1. The first raw water sealing member S11 is arranged at the first position in the axial direction of the shaft body Z1. The second raw water sealing member S12 is arranged at the second position in the axial direction of the shaft body Z1. The shaft body Z1, the first raw water sealing member S11, and the second raw water sealing member S12 are coaxial.

The water purification valve portion VJ has a shaft body Z2 and one water purification seal member S2. The shaft body Z2 and the water purification seal member S2 are coaxial.

The raw water valve portion VG is connected to the water purification valve portion VJ. A water purification valve portion VJ is connected to the faucet main body side of the raw water valve portion VG. Regardless of the operation of the operation unit 120, the relative positional relationship between the raw water valve unit VG and the water purification valve unit VJ does not change. The raw water valve portion VG and the water purification valve portion VJ are arranged along the same straight line extending in a specific direction. In the present embodiment, this specific direction coincides with the axial direction of the raw water valve portion VG. In the present embodiment, this specific direction coincides with the axial direction of the water purification valve portion VJ. The raw water valve portion VG and the water purification valve portion VJ are arranged coaxially.

Unless otherwise specified, the axial direction common to the raw water valve portion VG and the water purification valve portion VJ is also simply referred to as "axial direction" in the present application. In this embodiment, the specific direction coincides with the axial direction.

As shown in FIG. 2, the faucet device 100 (water discharge unit 104) has a first adjacent portion R1 as an adjacent portion and a second adjacent portion R2 as an adjacent portion. In the present application, the portion adjacent to the switching valve V1 is broadly collectively referred to as an adjacent portion. The adjacent portion may be composed of one member or may be composed of two or more members. In the present embodiment, the first adjacent portion R1 is the switching cover 140, and the second adjacent portion R2 is the head 144.

The first adjacent portion R1 has a cylindrical inner surface C1 and a cylindrical hollow portion defined by the cylindrical inner surface C1. The inner surface C1 of the cylinder is coaxial with the switching valve V1. As the switching valve V1 moves, the first raw water sealing member S11 slides on the inner surface C1 of the cylinder. The contact position between the inner surface C1 of the cylinder and the raw water sealing member S11 may vary in the axial direction.

The second adjacent portion R2 has a cylindrical inner surface C2 and a cylindrical hollow portion defined by the cylindrical inner surface C2. The inner surface C2 of the cylinder is coaxial with the switching valve V1. As the switching valve V1 moves, the second raw water sealing member S12 slides on the inner surface C2 of the cylinder. The inner surface C2 of the cylinder is a valve seat of the raw water valve portion VG. The contact position (seal position) between the inner surface C2 of the cylinder and the raw water seal member S12 may vary in the axial direction. That is, in the raw water valve portion VG, the seal position may fluctuate in the axial direction.

As shown in FIGS. 2 and 5, the second adjacent portion R2 has an inclined surface K1 for a water purification valve that is inclined with respect to a specific direction. The inclined surface K1 for the water purification valve is a valve seat of the water purification valve portion VJ. The inclined surface K1 for the water purification valve is coaxial with the switching valve V1. The inclined surface K1 for the water purification valve is a surface facing rearward. As shown in FIG. 5, the water purification valve portion VJ is closed by the contact between the water purification valve inclined surface K1 and the water purification seal member S2. Therefore, the purified water from the hollow portion 106b of the water quality purification cartridge 106 cannot pass through the water purification valve portion VJ and is stopped. In the present application, a surface facing backward, such as the inclined surface K1 for a water purification valve, is also referred to as a rear facing surface. In the water purification valve portion VJ, the seal position does not fluctuate in the axial direction.

As shown in FIGS. 2 and 5, in the first embodiment, the water purification seal member S2 is configured to be able to come into contact with the faucet main body side of the water purification valve inclined surface K1. In the raw water discharge state of FIG. 5, the water purification seal member S2 is pressed against the water purification valve inclined surface K1 by the urging force of the coil spring CS1. The urging force of the coil spring CS1 presses the switching valve V1 toward the tip of the faucet.

As shown in each cross-sectional view (FIG. 2, FIG. 3, FIG. 5, FIG. 6), the switching valve V1 has a raw water valve portion VG, a water purification valve portion VJ, and a coil spring CS1.

The front end of the coil spring CS1 is in contact with the protrusion 176 of the shaft body Z1. On the other hand, the rear end of the coil spring CS1 is in contact with the inwardly projecting portion 200 formed in the second adjacent portion R2. The inward protrusion 200 defines the rear end of the inner surface C2 of the cylinder.

The coil spring CS1 always urges the switching valve V1 (shaft body Z1) forward. As the switching valve V1 moves, the distance between the protrusion 176 and the inward protrusion 200 changes. With this change, the coil spring CS1 expands and contracts.

This switching valve V1 is connected to the push button mechanism 130 (switching shaft 138). The switching valve V1 moves in conjunction with the alternate operation of the push button mechanism 130. In conjunction with the position of the operation unit 120 (button), the switching valve V1 may adopt the first position P1, the second position P2, and the third position P3. The first position P1 is the position closest to the tip of the faucet in the movable range of the switching valve V1. The third position P3 is the position closest to the faucet body in the movable range of the switching valve V1. The second position P2 is located between the first position P1 and the third position P3. The moving direction of the operation unit 120 is the specific direction. The moving direction of the switching valve V1 is the specific direction. By operating the operation unit 120, the switching valve V1 integrally moves along a specific direction. In other words, by operating the operation unit 120, the raw water valve unit VG and the water purification valve unit VJ move integrally along a specific direction.

Regardless of the position of the switching valve V1, the relative positional relationship between the raw water valve portion VG and the water purification valve portion VJ does not change.

As shown in FIGS. 5 and 6, when the operation unit 120 is in the pop-out position (first position), the switching valve V1 is in the first position P1. When the switching valve V1 is in the first position P1, the raw water is discharged. As shown in FIGS. 2 and 3, when the operation unit 120 is in the pushing position (second position), the switching valve V1 is in the second position P2. When the switching valve V1 is in the second position P2, purified water is discharged. When the push button mechanism 130 is not operated, the push button mechanism 130 can take only the first position P1 and the second position P2. In the mutual transition between the first position P1 and the second position P2, the third position P3 is passed through.

In this way, due to the movement in a specific direction, the raw water valve portion VG is in the closed state and the water purification valve portion VJ is in the open state, and the raw water valve portion VG is in the open state and the water purification valve portion VJ is closed. The raw water discharge state in the state is achieved. By simply pressing the operation unit 120, mutual transition between the purified water discharge state and the raw water discharge state is possible. The valves of the raw water valve portion VG and the water purification valve portion VJ can be opened and closed only by moving the switching valve V1.

In the raw water discharge state shown in FIG. 5, the first raw water sealing member S11 is in contact with the inner surface C1 of the cylinder, but the second raw water sealing member S12 is not in contact with the inner surface C2 of the cylinder. As the switching valve V1 moves, the water purification seal member S2 comes out of the cylindrical cavity defined by the inner surface C2 of the cylinder, and is located closer to the tip of the faucet than the inner surface C2 of the cylinder. The second raw water sealing member S12 is located in the space between the inner surface C1 of the cylinder and the inner surface C2 of the cylinder, and is in a non-contact state. As a result, the water stoppage on the inner surface C2 of the cylinder is released, and the raw water flows into the hollow portion of the inner cylinder of the inner surface C2 of the cylinder. This raw water is discharged from the spout 110. In this way, the contact between the second raw water sealing member S12 and the inner surface C2 of the cylinder is released, so that the open state of the raw water valve portion VG is achieved. On the other hand, the water purification valve portion VJ is in the closed state. That is, the water purification is stopped by the contact between the water purification seal member S2 and the inclined surface K1 for the water purification valve.

In the purified water discharge state shown in FIG. 2, the first raw water sealing member S11 is in contact with the inner surface C1 of the cylinder from the inside, and the second raw water sealing member S12 is in contact with the inner surface C2 of the cylinder from the inside. By these abutments, the closed state of the raw water valve portion VG is achieved. On the other hand, the water purification valve portion VJ is in the open state. In the purified water discharge state, the purified water seal member S2 is separated from the inclined surface K1 for the water purification valve. The water purification seal member S2 is located closer to the faucet main body than the inclined surface K1 for the water purification valve. Purified water flows from between the purified water seal member S2 and the inclined surface K1 for the water purification valve, and this purified water is discharged from the spout 110.

In the purified water discharge state, the raw water pool space E1 is formed. A raw water pool space E1 is formed by the raw water valve portion VG and the adjacent portions (first adjacent portion R1 and second adjacent portion R2) (see the enlarged portion in FIG. 2). In the present embodiment, the raw water pool space E1 is a space between the first raw water sealing member S11 and the second raw water sealing member S12. In the purified water discharge state, the raw water is stopped at the raw water pool space E1.

[Second Embodiment]
FIG. 12 is a side view of the faucet device 300 according to the second embodiment, and FIG. 13 is a cross-sectional view of the faucet device 300. FIG. 14 is a cross-sectional view taken along the line AA of FIG. In FIGS. 12 to 14, the operation button is in the pushed position.

15 is a side view of the faucet device 300, FIG. 16 is a cross-sectional view of the faucet device 300, and FIG. 17 is a cross-sectional view taken along the line AA of FIG. In FIGS. 15 to 17, the operation button is in the pop-out position.

The faucet device 300 is a faucet device with a water purification function capable of switching between raw water and purified water. In the faucet device 300, the relationship between the position of the operation button and the water discharge switching is as follows. This relationship is the opposite of the faucet device 100 described above.
(2a) When the operation button is in the pushed position (button concave), the raw water is discharged.
(2b) When the operation button is in the pop-out position (button convex), purified water is discharged.

The faucet device 300 has a water guiding unit 302 and a water discharging unit 304. Although not shown in each cross-sectional view, the water guide portion 302 has a cavity for arranging a water quality purification cartridge and a water purification cartridge arranged in the cavity. This water purification cartridge is replaceable. This water quality purification cartridge is the same as the above-mentioned water quality purification cartridge 106. In the drawings according to this embodiment, the description of the water quality purification cartridge is omitted.

The faucet device 300 can be used by removing it from the faucet body. In this case, the water guide portion 302 functions as a grip portion.

The water discharge portion 304 is located on the downstream side of the water guide portion 302. The water discharge unit 304 constitutes the tip portion of the faucet device 300.

The water spouting unit 304 has a spouting port 310. Water is discharged from the spout 310. Either purified water or raw water is discharged from the spout 310.

The upper part of FIG. 18 is an exploded plan view of the water discharge portion 304. The middle part of FIG. 18 is an exploded cross-sectional view of the water discharge portion 304. The lower part of FIG. 18 is an exploded side view of the water discharge portion 304.

The water discharge unit 304 has an operation unit 320. The operation unit 320 is a push button. The push button 320 functions as a switching button for switching between the raw water flow path and the purified water flow path.

The water discharge unit 304 has an alternate operation type push button mechanism 330. By this push button mechanism 330, each time the push button 320 is pushed, the position of the push button 320 is switched between the first position (pop-out position) and the second position (push position).

As shown in FIG. 18, the push button mechanism 330 includes a first switching frame 332, a second switching frame 334, a switching ring 336, a switching shaft 338, a first switching case 340, an O-ring 342, a second switching case 344, and a packing. It has 346, a third switching case 348, an O-ring 350, a coil spring CS1 and a coil spring CS2. Further, the water discharge unit 304 has a head 352.

The push button mechanism 330 also uses a thrust lock mechanism. Similar to the push button mechanism 130 described above, the push button mechanism 330 is an alternate operation type push button mechanism.

19, FIG. 20 and FIG. 21 are cross-sectional views showing a main part of the water discharge portion 304. FIG. 19 is a cross-sectional view when the operation unit 320 is in the pop-out position. FIG. 20 is a cross-sectional view when the operation unit 320 is in the maximum pushing position. FIG. 21 is a cross-sectional view when the operation unit 320 is in the pushed-in position.

The details of the alternate operation of the push button mechanism 330 are as follows. When the operation unit 320 in the pop-out position (first position) is pressed, the operation unit 320 moves to the most pushed position (maximum push position: third position). When the pressing is released, the operation unit 320 moves from this maximum pushing position (third position) to the pushing position (second position) and stands still. This pushing position (second position) is maintained unless the pushing pressure is applied again. Next, when the operation unit 320 in the push-in position (second position) is pressed, the operation unit 320 moves to the maximum push-in position (third position). When the pressing is released, the operation unit 320 moves from this maximum pushing position (third position) to a popping out position (first position) and stands still. In this way, each time the operation unit 320 is pressed, the operation unit 320 alternately stops at the pop-out position (first position) and the push-in position (second position), and at each of these mutual transitions, the maximum push-in position is reached. (Third position) is passed. The movable range of the operation unit 320 is from the first position to the third position.

The faucet device 300 has a water purification flow path that penetrates the water purification material and reaches the spout 310, and a raw water flow path that does not permeate the water purification material and reaches the spout 310. The purified water flow path and the raw water flow path leading to the water discharge portion 304 are the same as those of the above-mentioned faucet device 100.

The water discharge unit 304 has a switching valve V1 for switching whether the water discharged from the water discharge port 310 is raw water or purified water. As shown in FIG. 18, the switching valve V1 has a raw water valve portion VG capable of opening and closing the raw water flow path and a water purification valve portion VJ capable of opening and closing the purified water flow path.

The raw water valve portion VG and the water purification valve portion VJ are directly connected. The positional relationship between the raw water valve portion VG and the water purification valve portion VJ does not change. The details of this connection structure will be described later.

The raw water valve portion VG has a shaft body Z1 and a raw water sealing member S1. The raw water seal member S1 is an O-ring. The raw water valve portion VG has one raw water sealing member S1.

The water purification valve portion VJ has a shaft body Z2 and a water purification seal member S2. The purified water seal member S2 is an O-ring. The water purification valve portion VJ has one water purification seal member S2.

22 (a) is a perspective view of the shaft body Z1 of the raw water valve portion VG, FIG. 22 (b) is a plan view of the shaft body Z1, and FIG. 22 (c) is a side view of the shaft body Z1. The shaft body Z1 has a front end portion 360 that engages with the push button mechanism 330 (switching shaft 338) and a rear end portion 362 that engages with the shaft body Z2. Further, the shaft body Z1 has a seal holding portion 364 to which the raw water seal member S1 is attached. The seal holding portion 364 has a front flange 366 that supports the raw water seal member S1 from the front, and a rear flange 368 that supports the raw water seal member S1 from the rear. Between the front end portion 360 and the seal holding portion 364, a large diameter portion 370 including the front end portion 360, a medium diameter portion 372 located behind the large diameter portion 370, and the rear of the medium diameter portion 372. A small diameter portion 374 located at is provided.

The rear end portion 362 has an insertion portion 376 inserted into the shaft body Z2 and an engaging protrusion 378 that engages with the shaft body Z2.

23 (a) is a perspective view of the shaft body Z2 of the water purification valve portion VJ, FIG. 23 (b) is a plan view of the shaft body Z2, and FIG. 23 (c) is a side view of the shaft body Z2. The shaft body Z2 includes a front end portion 390 that engages with the shaft body Z1 (rear end portion 362), a cylindrical outer peripheral surface portion 392 that includes the front end portion 390 and forms an outer peripheral surface having a constant outer diameter. It has a flange 394 provided behind the cylindrical outer peripheral surface portion 392 and a rear end portion 396 provided behind the flange 394.

The inside of the outer peripheral surface portion 392 of the cylinder is a cavity, and this cavity opens forward (see the middle stage of FIG. 18). The insertion portion 376 of the shaft body Z1 is inserted into this open cavity. The front end portion 390 has an engaging hole 398 that engages with the engaging projection 378 of the shaft body Z1.

As shown in FIGS. 19 to 21, the shaft body Z1 is connected to the shaft body Z2. The shaft body Z2 is provided behind the shaft body Z1 (on the water-based main body side). The shaft body Z1 and the shaft body Z2 are arranged along the same straight line extending in a specific direction. That is, the shaft body Z1 and the shaft body Z2 are arranged so that at least a part of the shaft body Z1 and the shaft body Z2 intersect this straight line. The straight line coincides with the central axis of the shaft body Z1. In the present embodiment, this specific direction coincides with the axial direction of the shaft body Z2. The straight line coincides with the central axis of the shaft body Z2. The shaft body Z1 and the shaft body Z2 are arranged coaxially. Since the engaging protrusion 378 and the engaging hole 398 are engaged with each other, the relative positional relationship between the shaft body Z1 and the shaft body Z2 is unchanged regardless of the operation of the operation unit 320. In this embodiment, the specific direction coincides with the axial direction.

As shown in FIGS. 19 to 21, the raw water valve portion VG has a shaft body Z1 and a raw water sealing member S1. The shaft body Z1 and the raw water sealing member S1 are coaxial.

As shown in FIGS. 19 to 21, the water purification valve portion VJ has a shaft body Z2, a water purification seal member S2, a coil spring CS1, and a packing support T1. The shaft body Z2, the water purification seal member S2, the coil spring CS1 and the packing support T1 are coaxial.

As shown in FIGS. 19 to 21, the raw water valve portion VG is connected to the water purification valve portion VJ. A water purification valve portion VJ is connected to the faucet main body side of the raw water valve portion VG. Regardless of the operation of the operation unit 320, the relative positional relationship between the raw water valve unit VG and the water purification valve unit VJ does not change. The raw water valve portion VG and the water purification valve portion VJ are arranged along the same straight line extending in a specific direction. In the present embodiment, this specific direction coincides with the axial direction of the water purification valve portion VJ. The raw water valve portion VG and the water purification valve portion VJ are arranged coaxially. In this embodiment, the specific direction coincides with the axial direction.

As shown in FIGS. 19 to 21, the faucet device 300 (water discharge unit 304) has a first adjacent portion R1 as an adjacent portion, a second adjacent portion R2 as an adjacent portion, and a third adjacent portion as an adjacent portion. It has a portion R3.

As shown in FIGS. 20 and 21, the first adjacent portion R1 has an inclined surface M1 for a raw water valve. The inclined surface M1 for the raw water valve is a valve seat of the raw water valve portion VG. The inclined surface M1 for the raw water valve is coaxial with the switching valve V1. The inclined surface M1 for the raw water valve is inclined with respect to a specific direction (axial direction). The inclined surface M1 for the raw water valve is a rear facing surface. As shown in FIG. 19, the raw water seal member S1 comes into contact with the raw water valve inclined surface M1 to stop the raw water. In addition, instead of the inclined surface M1 for the raw water valve, a vertical surface for the raw water valve may be adopted. An example of this vertical surface for a raw water valve is shown in the fifth embodiment described later.

As shown in FIG. 19, the second adjacent portion R2 has an inclined surface K1 for a water purification valve. The inclined surface K1 for the water purification valve is inclined with respect to the axial direction (specific direction). The inclined surface K1 for the water purification valve is a forward facing surface. The inclined surface K1 for the water purification valve is coaxial with the switching valve V1. In addition, instead of the inclined surface K1 for the water purification valve, a vertical surface for the water purification valve may be adopted.

The second adjacent portion R2 has an insertion space portion U1. The insertion space U1 is a space defined by the inner surface of the cylinder. The insertion space U1 is provided on the faucet main body side (rear) of the inclined surface K1 for the water purification valve. The inner surface of the insertion space portion U1 is a cylindrical surface. The insertion space U1 is coaxial with the switching valve V1.

A coil spring CS2 is arranged in the insertion space U1. The coil spring CS2 is an example of the supporting elastic body referred to in the present application. The outer diameter Q1 (not shown) of the coil spring CS2 (supporting elastic body) is smaller than the diameter A2 (not shown) of the insertion space U1 but is close to the diameter of the insertion space U1. From the viewpoint of stable support of the insertion portion N1 and suppression of spring tilt, the difference (A2-Q1) is preferably 1.0 mm or less, more preferably 0.8 mm or less, and even more preferably 0.5 mm or less. The difference (A2-Q1) is preferably 0.1 mm or more, more preferably 0.2 mm or more, and even more preferably 0.3 mm or more, from the viewpoint of improving the slidability due to the expansion and contraction of the spring and suppressing scratches. The outer diameter Q1 of the coil spring CS2 is measured in a natural state where no external force is applied. The axial direction of the coil spring CS2 coincides with the specific direction. The coil spring CS2 is arranged so as to be able to expand and contract in the axial direction.

As described above, the water purification valve portion VJ has a rear end portion 396 (see FIG. 23). In the present embodiment, the rear end portion 396 constitutes an insertion portion N1 that can enter the insertion space portion U1. The insertion portion N1 prevents the coil spring CS2 from coming into contact with the water purification valve inclined surface K1. As a result, damage to the inclined surface K1 for the water purification valve is prevented, and the watertightness of the water purification valve portion VJ is maintained.

The inclined surface K1 for the water purification valve is a valve seat of the water purification valve portion VJ. As shown in FIG. 21, when the water purification seal member S2 comes into contact with the water purification valve inclined surface K1, the water purification valve portion VJ is closed and the water purification is stopped. As described above, since the water purification valve inclined surface K1 is a forward facing surface, the water purification seal member S2 abuts on the front side (faucet tip side) of the water purification valve inclined surface K1. The insertion portion N1 is urged toward the tip of the faucet by the coil spring CS2.

The insertion portion N1 has a guide portion N2 that can slide with respect to the inner surface of the cylinder of the insertion space portion U1. As shown in FIG. 23, the portion of the insertion portion N1 (rear end portion 396) that protrudes outward is the guide portion N2. In the present embodiment, the guide portions N2 are evenly arranged at a plurality of locations (4 locations) in the circumferential direction. The guide portion N2 allows the insertion portion N1 to stably slide and move inside the insertion space portion U1. The front end of the coil spring CS2 is in contact with the rear end surface of the guide portion N2.

As described above, the water purification valve portion VJ has a coil spring CS1 and a packing support T1. As shown in FIG. 18, the packing support T1 is a ring-shaped member. The packing support T1 has a flange portion T11 and a cylindrical portion T12 having an outer diameter smaller than that of the flange portion T11. The flange portion T11 constitutes the rear end portion of the packing support T1. The cylindrical portion T12 is located in front of the flange portion T11. The inner diameter of the packing support T1 is substantially equal to the outer diameter of the cylindrical outer peripheral surface portion 392 (see FIG. 23) of the shaft body Z2. The outer diameter of the cylindrical portion T12 is substantially equal to the inner diameter of the coil spring CS1. The outer diameter of the packing support T1 is larger than the inner diameter of the coil spring CS1.

The water purification seal member S2 and the packing support T1 are externally fitted to the cylindrical outer peripheral surface portion 392 of the shaft body Z2. The packing support T1 is located on the front side of the water purification seal member S2. The water purification seal member S2 is in contact with the rear end surface (flange portion T11) of the packing support T1. Regardless of the position of the switching valve V1, the packing support T1 supports the water purification seal member S2 from the front. A flange 394 (see FIG. 23) is located behind the water purification seal member S2. The outer diameter of the flange 394 is smaller than the inner diameter of the insertion space U1.

The coil spring CS1 is arranged between the shaft body Z1 of the raw water valve portion VG and the packing support T1. The front end of the coil spring CS1 is in contact with the rear flange 368 of the shaft body Z1. The rear end of the coil spring CS1 is in contact with the flange portion T11 of the packing support T1.

The water purification seal member S2 and the packing support T1 can slide on the outer peripheral surface portion 392 of the cylinder. Since this sliding occurs inside the water purification seal member S2, it is also referred to as inner diameter sliding.

In the purified water discharge state shown in FIG. 19, the purified water seal member S2 is separated from the inclined surface K1 for the water purification valve. In this state, the water purification seal member S2 is sandwiched between the packing support T1 and the flange 394 by the elastic force of the coil spring CS1.

In the purified water discharge state shown in FIG. 19, the raw water pool space E1 is formed. A raw water pool space E1 is formed by a raw water valve portion VG and an adjacent portion (first adjacent portion R1 and third adjacent portion R3). In the present embodiment, the raw water pool space E1 is a space between the raw water sealing member S1 and the O-ring 342. The O-ring 342 is in contact with the outer peripheral surface of the large diameter portion 370 of the shaft body Z1 and slides on the outer peripheral surface. This sliding is an inner diameter sliding. In the purified water discharge state, the raw water is stopped at the raw water pool space E1.

In the raw water discharge state shown in FIG. 21, the water purification seal member S2 is in contact with the water purification valve inclined surface K1. The contact causes the water purification seal member S2 to be pushed forward, causing the inner diameter sliding. Due to this inner diameter sliding, the water purification seal member S2 is (slightly) separated from the flange 394.

In the raw water discharge state, the insertion portion N1 is inserted into the insertion space portion U1. It is inserted deeper than the purified water discharge state. Along with this, the coil spring CS2 is compressed. The length L2b of the coil spring CS2 in the raw water discharge state is shorter than the length L2a of the coil spring CS2 in the purified water discharge state.

In addition, the coil spring CS1 is compressed as compared with the purified water discharge state. The length L1b of the coil spring CS1 in the raw water discharge state is shorter than the length L1a of the coil spring CS1 in the purified water discharge state.

As can be understood from the occurrence of the inner diameter sliding, the water purification seal member S2 is not fixed to the shaft body Z2. However, in the raw water discharge state, the contact pressure between the water purification seal member S2 and the water purification valve inclined surface K1 is secured by the elastic force of the compressed coil spring CS1. Therefore, watertightness (water purification seal) is achieved.

In the maximum pushed state shown in FIG. 20, the water purification seal member S2 is in contact with the inclined surface K1 for the water purification valve (therefore, the purified water is stopped). In the maximum pushed state, the same discharge state (in this embodiment, the raw water discharge state) as when the operation unit is in the pushed position is achieved. Since the position of the inclined surface K1 for the water purification valve does not move, the water purification seal member S2 is pushed forward by the inclined surface K1 for the water purification valve as the switching valve V1 moves backward, and the inner diameter sliding occurs. Since the pushing amount of the operation unit 320 is further larger than the raw water discharge state, the water purification seal member S2 slides more forward with respect to the shaft body Z2. As a result, the coil spring CS1 is further compressed. The length L1c of the coil spring CS1 in the maximum pushed state is shorter than the length L1b.

In the maximum pushed state, the insertion portion N1 is inserted into the insertion space portion U1. It is inserted deeper than the raw water discharge state. Along with this, the coil spring CS2 is compressed. The length L2c of the coil spring CS2 in the maximum pushed state is shorter than the length L2b.

Due to the thrust lock mechanism, the switching valve V1 needs to move further to the faucet main body side than the raw water discharge state (FIG. 21) in which the water purification seal member S2 abuts on the water purification valve inclined surface K1. The inner diameter sliding allows the switching valve V1 to move toward the faucet main body side (movement after contacting) after the raw water sealing member S1 comes into contact with the inclined surface K1 for the water purification valve. The expansion and contraction of the coil spring CS1 and the coil spring CS2 also allow this movement after contact.

As described above, due to the thrust lock mechanism, the switching valve V1 moves further rearward (toward the faucet body side) than when the operation unit 320 is in the pushing position. The backward movement of the switching valve V1 due to this maximum pushing state is also referred to as an overstroke. The structure in which the insertion portion N1 is inserted into the insertion space portion U1 allows an overstroke. Due to the inner diameter sliding, the closed state of the water purification valve portion VJ is maintained in the maximum pushed state.

[Third Embodiment]
FIG. 24 is a side view of the faucet device 500 according to the third embodiment, and FIG. 25 is a cross-sectional view of the faucet device 500. FIG. 26 is a cross-sectional view taken along the line AA of FIG. 24. In FIGS. 24 to 26, the operation button is in the pushed position.

27 is a side view of the faucet device 500, FIG. 28 is a cross-sectional view of the faucet device 500, and FIG. 29 is a cross-sectional view taken along the line BB of FIG. 27. In FIGS. 27 to 29, the operation button is in the pop-out position.

The faucet device 500 is a faucet device with a water purification function capable of switching between raw water and purified water. In the faucet device 500, the relationship between the position of the operation button and the water discharge switching is as follows.
(3a) When the operation button is in the pushed position (button concave), the raw water is discharged.
(3b) When the operation button is in the pop-out position (button convex), purified water is discharged.

The faucet device 500 has a water guiding unit 502 and a water discharging unit 504. Although not shown in each cross-sectional view, the water guide portion 502 has a cavity for arranging a water quality purification cartridge and a water purification cartridge arranged in the cavity. This water purification cartridge is replaceable. This water quality purification cartridge is the same as the above-mentioned water quality purification cartridge 106. In the drawings according to this embodiment, the description of the water quality purification cartridge is omitted.

The faucet device 500 can be used by removing it from the faucet body. In this case, the water guide portion 502 functions as a grip portion.

The water discharge unit 504 is located on the downstream side of the water guide unit 502. The water discharge unit 504 constitutes the tip end portion of the faucet device 500. The water spouting unit 504 has a spouting port 510. Water is discharged from the spout 510. Either purified water or raw water is discharged from the spout 510.

The upper part of FIG. 30 is an exploded plan view of the water discharge portion 504. The middle part of FIG. 30 is a cross-sectional view taken along the line AA of the upper part of FIG. The lower part of FIG. 30 is an exploded side view of the water discharge portion 504.

The water discharge unit 504 has an operation unit 520. The operation unit 520 is a push button. The push button 520 functions as a switching button for switching between the raw water flow path and the purified water flow path.

The water discharge unit 504 has an alternate operation type push button mechanism 530. By this push button mechanism 530, the position of the push button 520 is switched between the first position (pop-out position) and the second position (push position) each time the push button 520 is pushed.

As shown in FIG. 30, the push button mechanism 530 includes a first switching frame 532, a second switching frame 534, a switching ring 536, a switching shaft 538, a first switching case 540, an O-ring 542, a second switching case 544, and a packing. It has 546, a third switching case 548, an O-ring 55, and a coil spring CS1. Further, the water discharge unit 504 has a head 560.

The push button mechanism 530 also uses a thrust lock mechanism. Similar to the push button mechanism 130 described above, the push button mechanism 530 is an alternate operation type push button mechanism.

The water discharge unit 504 has a switching valve V1 for switching whether the water discharged from the water discharge port 510 is raw water or purified water. As shown in FIGS. 25, 26, 28 and 29, the switching valve V1 has a raw water valve portion VG capable of opening and closing the raw water flow path and a water purification valve portion VJ capable of opening and closing the raw water flow path. There is.

The switching valve V1 has a shaft body Z12, a raw water sealing member S1, and a purified water sealing member S2. In the present embodiment, the raw water valve portion VG and the water purification valve portion VJ are configured on the integrally formed shaft body Z12. The shaft body Z12, the raw water seal member S1, and the purified water seal member S2 are coaxial.

31 (a) is a perspective view of the shaft body Z12, FIG. 31 (b) is a plan view of the shaft body Z12, and FIG. 31 (c) is a side view of the shaft body Z12.

The shaft body Z1 has a first seal holding portion 564 to which the raw water seal member S1 is attached, and a second seal holding portion 566 to which the purified water seal member S2 is attached. The first seal holding portion 564 is located in front of the second seal holding portion 566.

The first seal holding portion 564 has a front flange 568 that supports the raw water seal member S1 from the front, and a rear flange 570 that supports the raw water seal member S1 from the rear. The second seal holding portion 566 has a front flange 572 that supports the water purification seal member S2 from the front, and a rear flange 574 that supports the water purification seal member S2 from the rear.

Further, the shaft body Z12 has a cylindrical portion 576 constituting a front end portion and a thin cylindrical portion 578 adjacent to the rear portion thereof. A first seal holding portion 564 is formed at the rear end portion of the thin cylindrical portion 578. As shown in the cross-sectional view of FIG. 25 and the like, the inside of the cylindrical portion 576 is a cavity, and this cavity opens forward. The switching shaft 538 is engaged with this cavity.

Further, the shaft body Z12 has a rear end portion 580. The rear end portion 580 constitutes an insertion portion N1 to be inserted into the insertion space portion U1.

As shown in FIG. 25, the faucet device 500 (water discharge portion 504) includes a first adjacent portion R1 as an adjacent portion, a second adjacent portion R2 as an adjacent portion, and a third adjacent portion R3 as an adjacent portion. Has.

The first adjacent portion R1 has an inclined surface M1 for a raw water valve. The inclined surface M1 for the raw water valve is a valve seat of the raw water valve portion VG. The inclined surface M1 for the raw water valve is coaxial with the switching valve V1. The inclined surface M1 for the raw water valve is inclined with respect to a specific direction (axial direction). The inclined surface M1 for the raw water valve is a rear facing surface. As shown in FIG. 28, the raw water is stopped by the raw water sealing member S1 coming into contact with the raw water valve inclined surface M1. In addition, instead of the inclined surface M1 for the raw water valve, a vertical surface for the raw water valve may be adopted. An example of this vertical surface for a raw water valve is shown in the fifth embodiment described later.

As shown in FIG. 25, the second adjacent portion R2 has a sliding inner surface D1 for a water purification valve. The cylindrical cavity is defined by the sliding inner surface D1 for the water purification valve. The sliding inner surface D1 for the water purification valve is coaxial with the switching valve V1.

The hollow portion defined by the sliding inner surface D1 for the water purification valve is also the insertion space portion U1. The insertion space U1 is coaxial with the switching valve V1.

A coil spring CS1 is arranged in the insertion space U1. The coil spring CS1 is an example of the supporting elastic body referred to in the present application. The coil spring CS1 is arranged so as to be able to expand and contract in the axial direction.

As described above, the shaft body Z12 (switching valve V1) has an insertion portion N1 (see FIG. 31). This insertion portion N1 can enter the insertion space portion U1. The rear end surface of the insertion portion N1 is supported by the coil spring CS1. The front end of the coil spring CS1 is in contact with the rear end surface of the insertion portion N1. The insertion portion N1 is urged toward the tip of the faucet by the coil spring CS1.

In the present embodiment, the water stoppage of the purified water is achieved by the contact between the sliding inner surface D1 for the water purification valve and the water purification seal member S2. In other words, the water purification seal member S2 enters the sliding inner surface D1 (insertion space portion U1) for the water purification valve, so that the water purification is stopped. The water purification seal member S2 can slide on the sliding inner surface D1 for the water purification valve. Therefore, the position of the seal by the water purification seal member S2 may fluctuate in the axial direction. The sliding of the water purification seal member S2 is also referred to as an outer diameter sliding.

The sliding inner surface D1 for the water purification valve is a valve seat of the water purification valve portion VJ. This valve seat is coaxial with the switching valve V1. In the inclined surface M1 for the raw water valve and the inclined surface K1 for the water purification valve, the contact position with the seal member is constant, whereas in the sliding inner surface D1 for the water purification valve, the contact position with the seal member is in the axial direction. Can fluctuate in.

In the purified water discharge state shown in FIG. 28, the purified water seal member S2 has escaped from the sliding inner surface D1 (insertion space portion U1) for the water purification valve. In the purified water discharge state, the purified water seal member S2 is located in front of the sliding inner surface D1 for the water purification valve. Therefore, the water purification valve portion VJ is in the open state. On the other hand, in this purified water discharge state, the raw water seal member S1 is in contact with the raw water valve inclined surface M1. That is, the raw water valve portion VG is in the closed state.

In the purified water discharge state shown in FIG. 28, the raw water pool space E1 is formed. A raw water pool space E1 is formed by a raw water valve portion VG and an adjacent portion (first adjacent portion R1 and third adjacent portion R3). In the present embodiment, the raw water pool space E1 is a space between the raw water sealing member S1 and the O-ring 542. The O-ring 542 is in contact with the outer peripheral surface of the cylindrical portion 576 of the shaft body Z12 and slides on the outer peripheral surface. This sliding is an inner diameter sliding. In the purified water discharge state, the raw water is stopped at the raw water pool space E1.

In the raw water discharge state shown in FIG. 25, the water purification seal member S2 enters the inside of the water purification valve sliding inner surface D1 and is in contact with the water purification valve sliding inner surface D1. Due to this contact, the purified water is stopped and the water purification valve portion VJ is in the closed state. On the other hand, in this raw water discharge state, the raw water seal member S1 is separated from the raw water valve inclined surface M1. The raw water seal member S1 is located behind the inclined surface M1 for the raw water valve. Therefore, the raw water valve portion VG is in the open state. The position of the switching valve V1 in the raw water discharge state is behind the purified water discharge state.

In the maximum pushed state (not shown), the switching valve V1 is located further behind the raw water discharge state. Therefore, the amount of insertion into the insertion space portion U1 is further increased. By inserting the insertion portion N1 into the insertion space portion U1, an overstroke is allowed. Due to the outer diameter sliding, the contact position (seal position) between the water purification seal member S2 and the water purification valve sliding inner surface D1 may fluctuate in the axial direction. Therefore, the closed state of the water purification valve portion VJ is maintained in the maximum pushed state.

[Fourth Embodiment]
32 is a side view of the faucet device 700 according to the fourth embodiment, and FIG. 33 is a cross-sectional view of the faucet device 700. FIG. 34 is a cross-sectional view taken along the line AA of FIG. 32. In FIGS. 32 to 34, the operation button is in the pushed position.

35 is a side view of the faucet device 700, FIG. 36 is a cross-sectional view of the faucet device 700, and FIG. 37 is a cross-sectional view taken along the line AA of FIG. 35. In FIGS. 35 to 37, the operation button is in the pop-out position.

The faucet device 700 is a faucet device with a water purification function capable of switching between raw water and purified water. In the faucet device 700, the relationship between the position of the operation button and the water discharge switching is as follows.
(4a) When the operation button is in the pushed position (button concave), the raw water is discharged.
(4b) When the operation button is in the pop-out position (button convex), purified water is discharged.

The faucet device 700 has a water guiding unit 702 and a water discharging unit 704. Although not shown in each cross-sectional view, the water guide portion 702 has a cavity for arranging a water quality purification cartridge and a water purification cartridge arranged in the cavity. This water purification cartridge is replaceable. This water quality purification cartridge is the same as the above-mentioned water quality purification cartridge 106. In the drawings according to this embodiment, the description of the water quality purification cartridge is omitted.

The faucet device 700 can be used by removing it from the faucet body. In this case, the water guide portion 702 functions as a grip portion.

The water discharge portion 704 is located on the downstream side of the water guide portion 702. The water discharge unit 704 constitutes the tip portion of the faucet device 700.

The water spouting unit 704 has a spouting port 710. Water is discharged from the spout 710. Either purified water or raw water is discharged from the spout 710.

The upper part of FIG. 38 is an exploded plan view of the water discharge portion 704. The middle part of FIG. 38 is an exploded cross-sectional view of the water discharge portion 704. The lower part of FIG. 38 is an exploded side view of the water discharge portion 704.

The water discharge unit 704 has an operation unit 720. The operation unit 720 is a push button. The push button 720 functions as a switching button for switching between the raw water flow path and the purified water flow path.

The water discharge unit 704 has an alternate operation type push button mechanism 730. By this push button mechanism 730, each time the push button 720 is pushed, the position of the push button 720 is switched between the first position (pop-out position) and the second position (push position).

As shown in FIG. 38, the push button mechanism 730 includes a first switching frame 732, a second switching frame 734, a switching ring 736, a switching shaft 738, a first switching case 740, an O-ring 742, a second switching case 744, and a packing. It has a 746, a third switching case 748, an O-ring 750, a coil spring CS1 and a coil spring CS2. Further, the water discharge unit 704 has a head 752.

The push button mechanism 730 also uses a thrust lock mechanism. Similar to the push button mechanism 130 described above, the push button mechanism 730 is an alternate operation type push button mechanism.

39, 40 and 41 are cross-sectional views showing a main part of the water discharge portion 704. FIG. 39 is a cross-sectional view when the operation unit 720 is in the pop-out position. FIG. 40 is a cross-sectional view when the operation unit 720 is in the maximum pushing position. FIG. 41 is a cross-sectional view when the operation unit 720 is in the pushed-in position.

The alternate operation of the push button mechanism 730 is the same as that of the first to third embodiments described above.

The faucet device 700 has a water purification flow path that permeates the water purification material and reaches the spout 710, and a raw water flow path that reaches the spout 710 without permeating the water purification material. The purified water flow path and the raw water flow path leading to the water discharge portion 704 are the same as those of the above-mentioned faucet device 100.

The water discharge unit 704 has a switching valve V1 for switching whether the water discharged from the water discharge port 710 is raw water or purified water. As shown in FIG. 38, the switching valve V1 has a raw water valve portion VG capable of opening and closing the raw water flow path and a water purification valve portion VJ capable of opening and closing the purified water flow path.

The raw water valve portion VG and the water purification valve portion VJ are directly connected. The positional relationship between the raw water valve portion VG and the water purification valve portion VJ does not change. The details of this connection structure will be described later.

The raw water valve portion VG has a shaft body Z1 and a raw water sealing member S1. The raw water seal member S1 is an O-ring. The raw water valve portion VG has one raw water sealing member S1.

The water purification valve portion VJ has a shaft body Z2 and a water purification seal member S2. The purified water seal member S2 is an O-ring. The water purification valve portion VJ has one water purification seal member S2.

42 (a) is a perspective view of the shaft body Z1 of the raw water valve portion VG, FIG. 42 (b) is a plan view of the shaft body Z1, and FIG. 42 (c) is a side view of the shaft body Z1. The shaft body Z1 has a front end portion 760 that engages with the push button mechanism 730 (switching shaft 738) and a rear end portion 762 that engages with the shaft body Z2. Further, the shaft body Z1 has a seal holding portion 764 to which the raw water seal member S1 is attached. The seal holding portion 764 has a front flange 766 that supports the raw water seal member S1 from the front, and a rear flange 768 that supports the raw water seal member S1 from the rear. Between the front end portion 760 and the seal holding portion 764, a large-diameter portion 770 including the front end portion 760 and an intermediate portion 772 located behind the large-diameter portion 770 are provided. The intermediate portion 772 has a shape as if two flat plates intersect at a right angle.

The rear end portion 762 has an insertion portion 776 inserted into the shaft body Z2 and an engaging protrusion 778 that engages with the shaft body Z2.

43 (a) is a perspective view of the shaft body Z2 of the water purification valve portion VJ, FIG. 43 (b) is a plan view of the shaft body Z2, and FIG. 43 (c) is a side view of the shaft body Z2. The shaft body Z2 includes a front end portion 790 that engages with the shaft body Z1 (rear end portion 762), a cylindrical outer peripheral surface portion 792 that includes the front end portion 790 and forms an outer peripheral surface having a constant outer diameter. It has a flange 794 provided behind the cylindrical outer peripheral surface portion 792 and a rear end portion 796 provided behind the flange 794.

The inside of the outer peripheral surface portion 792 of the cylinder is a cavity, and this cavity opens forward. The insertion portion 776 of the shaft body Z1 is inserted into this open cavity. The front end portion 790 has an engaging hole 798 that engages with the engaging projection 778 of the shaft body Z1.

As shown in FIGS. 39 to 41, the shaft body Z1 is connected to the shaft body Z2. The shaft body Z2 is provided behind the shaft body Z1 (on the water-based main body side). The shaft body Z1 and the shaft body Z2 are arranged along the same straight line extending in a specific direction. That is, the shaft body Z1 and the shaft body Z2 are arranged so that at least a part of the shaft body Z1 and the shaft body Z2 intersect this straight line. The straight line coincides with the central axis of the shaft body Z1. The straight line coincides with the central axis of the shaft body Z2. The shaft body Z1 and the shaft body Z2 are arranged coaxially.

Since the engaging protrusion 778 and the engaging hole 798 are engaged with each other, the relative positional relationship between the shaft body Z1 and the shaft body Z2 is unchanged regardless of the operation of the operation unit 720. In this embodiment, the specific direction coincides with the axial direction.

As shown in FIGS. 39 to 41, the raw water valve portion VG has a shaft body Z1 and a raw water sealing member S1. The shaft body Z1 and the raw water seal member S1 are coaxial. The water purification valve portion VJ has a shaft body Z2, a water purification seal member S2, a coil spring CS1, a packing support T1, and a spring support T2. The shaft body Z2, the water purification seal member S2, the coil spring CS1, the packing support T1 and the spring support T2 are coaxial.

The raw water valve portion VG is connected to the water purification valve portion VJ. A water purification valve portion VJ is connected to the faucet main body side of the raw water valve portion VG. Regardless of the operation of the operation unit 320, the relative positional relationship between the raw water valve unit VG and the water purification valve unit VJ does not change. The raw water valve portion VG and the water purification valve portion VJ are arranged along the same straight line extending in a specific direction. In the present embodiment, this specific direction coincides with the axial direction of the water purification valve portion VJ. The raw water valve portion VG and the water purification valve portion VJ are arranged coaxially. In this embodiment, the specific direction coincides with the axial direction.

As shown in FIGS. 39 to 41, the faucet device 700 (water discharge portion 704) has a first adjacent portion R1 as an adjacent portion, a second adjacent portion R2 as an adjacent portion, and a third adjacent portion as an adjacent portion. It has a portion R3. In the present embodiment, the third adjacent portion R3 is the second switching case 744.

The first adjacent portion R1 has an inclined surface M1 for a raw water valve. The inclined surface M1 for the raw water valve is inclined with respect to a specific direction (axial direction). The inclined surface M1 for the raw water valve is a rear facing surface. As shown in FIG. 39, the raw water is stopped by the raw water sealing member S1 coming into contact with the raw water valve inclined surface M1. In addition, instead of the inclined surface M1 for the raw water valve, a vertical surface for the raw water valve may be adopted. An example of this vertical surface for a raw water valve is shown in the fifth embodiment described later.

The second adjacent portion R2 has an inclined surface K1 for a water purification valve. The inclined surface K1 for the water purification valve is inclined with respect to the axial direction (specific direction). The inclined surface K1 for the water purification valve is a forward facing surface. The inclined surface K1 for the water purification valve is coaxial with the switching valve V1. In addition, instead of the inclined surface K1 for the water purification valve, a vertical surface for the water purification valve may be adopted.

The second adjacent portion R2 has an insertion space portion U1. The insertion space U1 is a space defined by the inner surface of the cylinder. The insertion space U1 is provided on the faucet main body side (rear) of the inclined surface K1 for the water purification valve. The inner surface of the insertion space portion U1 is a cylindrical surface. The insertion space U1 is coaxial with the switching valve V1.

A coil spring CS2 is arranged in the insertion space U1. The coil spring CS2 is an example of the supporting elastic body referred to in the present application. The axial direction of the coil spring CS2 coincides with the specific direction. The coil spring CS2 is arranged so as to be able to expand and contract in the axial direction.

As described above, the water purification valve portion VJ has a rear end portion 796 (see FIG. 43). In the present embodiment, the rear end portion 796 constitutes an insertion portion N1 that can enter the insertion space portion U1. The front end of the coil spring CS2 is in contact with the insertion portion N1. The insertion portion N1 is supported by the coil spring CS2 and urged forward. The insertion portion N1 prevents the coil spring CS2 from coming into contact with the water purification valve inclined surface K1. As a result, damage to the inclined surface K1 for the water purification valve is prevented, and the watertightness of the water purification valve portion VJ is maintained.

As shown in FIG. 41, when the water purification valve member S2 comes into contact with the water purification valve inclined surface K1, the water purification valve portion VJ is closed and the water purification is stopped. Since the water purification valve inclined surface K1 is a forward facing surface, the water purification seal member S2 abuts on the front side (faucet tip side) of the water purification valve inclined surface K1.

The insertion portion N1 is urged toward the tip of the faucet by the coil spring CS2. As shown in FIG. 43, the rear end portion 796 has a step portion 800. The front end of the coil spring CS2 is fitted in the step portion 800.

The insertion portion N1 has a guide portion N2 that can slide with respect to the inner surface of the cylinder of the insertion space portion U1. As shown in FIG. 43, the portion of the insertion portion N1 (rear end portion 796) that protrudes outward is the guide portion N2. In this embodiment, the flange 794 is the guide portion N2. The guide portion N2 allows the insertion portion N1 to stably slide and move inside the insertion space portion U1.

As described above, the switching valve V1 has a coil spring CS1, a packing support T1, and a spring support T2.

As shown in FIG. 38, the packing support T1 is a ring-shaped member. The packing support T1 has a flange portion T11 and a cylindrical portion T12 having an outer diameter smaller than that of the flange portion T11. The flange portion T11 constitutes the rear end portion of the packing support T1. The cylindrical portion T12 is located in front of the flange portion T11. The inner diameter of the packing support T1 is substantially equal to the outer diameter of the cylindrical outer peripheral surface portion 792 (see FIG. 43) of the shaft body Z2. The outer diameter of the cylindrical portion T12 is substantially equal to the inner diameter of the coil spring CS1. The outer diameter of the packing support T1 is larger than the inner diameter of the coil spring CS1.

As shown in FIG. 38, the spring support T2 has a small diameter portion T21 and a large diameter portion T22. The small diameter portion T21 is located behind the large diameter portion T22. The outer diameter of the small diameter portion T21 is substantially equal to the inner diameter of the coil spring CS1. A coil spring CS1 is externally fitted to the small diameter portion T21. The rear flange 768 of the raw water valve portion VG is fitted inside the large diameter portion T22.

The purified water seal member S2 and the packing support T1 are externally fitted to the cylindrical outer peripheral surface portion 792 of the shaft body Z2.

The packing support T1 is located on the front side of the water purification seal member S2. The water purification seal member S2 is in contact with the rear end surface of the packing support T1. Regardless of the position of the switching valve V1, the packing support T1 supports the water purification seal member S2 from the front. A flange 794 (see FIG. 43) is located behind the water purification seal member S2. The outer diameter of the flange 794 is smaller than the inner diameter of the insertion space U1.

The spring support T2 is located in front of the coil spring CS1. The spring support T2 is located behind the raw water seal member S1. The spring support T2 is fixed to the switching valve V1 (shaft body Z1). The spring support T2 supports the coil spring CS1 from the front.

The coil spring CS1 is arranged between the spring support T2 and the packing support T1. The front end of the coil spring CS1 is in contact with the spring support T2. The rear end of the coil spring CS1 is in contact with the packing support T1.

The water purification seal member S2 and the packing support T1 can slide on the outer peripheral surface portion 392 of the cylinder. This sliding occurs inside the water purification seal member S2, and is the above-mentioned inner diameter sliding.

In the purified water discharge state shown in FIG. 39, the purified water seal member S2 is separated from the inclined surface K1 for the water purification valve. In this state, the water purification seal member S2 is sandwiched between the packing support T1 and the flange 794 by the elastic force of the coil spring CS1.

In the raw water discharge state shown in FIG. 41, the water purification seal member S2 is in contact with the water purification valve inclined surface K1. The contact causes the water purification seal member S2 to be pushed forward, causing the inner diameter sliding. Due to this inner diameter sliding, the water purification seal member S2 is (slightly) separated from the flange 794.

In the raw water discharge state, the insertion portion N1 is inserted into the insertion space portion U1. It is inserted deeper than the purified water discharge state. Along with this, the coil spring CS2 is compressed. The length L2b of the coil spring CS2 in the raw water discharge state is shorter than the length L2a of the coil spring CS2 in the purified water discharge state.

In addition, the coil spring CS1 is compressed as compared with the purified water discharge state. The length L1b of the coil spring CS1 in the raw water discharge state is shorter than the length L1a of the coil spring CS1 in the purified water discharge state.

As can be understood from the occurrence of the inner diameter sliding, the water purification seal member S2 is not fixed to the shaft body Z2. However, in the raw water discharge state, the contact pressure between the water purification seal member S2 and the water purification valve inclined surface K1 is secured by the elastic force of the compressed coil spring CS1. Therefore, watertightness (water purification seal) is achieved.

In the maximum pushed state shown in FIG. 40, the water purification seal member S2 is in contact with the water purification valve inclined surface K1 (therefore, the water purification is stopped). Since the position of the inclined surface K1 for the water purification valve does not move, the water purification seal member S2 is pushed forward by the inclined surface K1 for the water purification valve as the switching valve V1 moves backward, and the inner diameter sliding occurs. Since the pushing amount of the operation unit 320 is further larger than the raw water discharge state, the water purification seal member S2 slides more forward with respect to the shaft body Z2. As a result, the coil spring CS1 is further compressed. The length L1c of the coil spring CS1 in the maximum pushed state is shorter than the length L1b.

In the maximum pushed state, the insertion portion N1 is inserted into the insertion space portion U1. It is inserted deeper than the raw water discharge state. Along with this, the coil spring CS2 is compressed. The length L2c of the coil spring CS2 in the maximum pushed state is shorter than the length L2b.

Due to the thrust lock mechanism, the switching valve V1 needs to move further to the faucet main body side than the raw water discharge state (FIG. 41) in which the water purification seal member S2 abuts on the water purification valve inclined surface K1. The inner diameter sliding allows the switching valve V1 to move toward the faucet main body side (movement after contacting) after the raw water sealing member S1 comes into contact with the inclined surface K1 for the water purification valve. The expansion and contraction of the coil spring CS1 and the coil spring CS2 also allow this movement after contact.

The structure in which the insertion portion N1 is inserted into the insertion space portion U1 allows an overstroke due to the thrust lock mechanism. Due to the inner diameter sliding, the closed state of the water purification valve portion VJ is maintained in the maximum pushed state.

In the purified water discharge state shown in FIG. 39, the raw water pool space E1 is formed. A raw water pool space E1 is formed by a raw water valve portion VG and an adjacent portion (first adjacent portion R1 and third adjacent portion R3). In the present embodiment, the raw water pool space E1 is a space between the raw water sealing member S1 and the O-ring 742. The O-ring 742 is in contact with the outer peripheral surface of the large diameter portion 770 of the shaft body Z1 and slides on the outer peripheral surface. This sliding is an inner diameter sliding. In the purified water discharge state, the raw water is stopped at the raw water pool space E1.

[Fifth Embodiment]

44, 45 and 46 are cross-sectional views showing a main part of the water discharge portion 904 in the faucet device 900 of the fifth embodiment.

FIG. 44 is a cross-sectional view when the operation unit 920 is in the pop-out position. FIG. 45 is a cross-sectional view when the operation unit 920 is in the maximum pushing position. FIG. 46 is a cross-sectional view when the operation unit 920 is in the pushed-in position.

The faucet device 900 is a faucet device with a water purification function capable of switching between raw water and purified water. In the faucet device 900, the relationship between the position of the operation button and the water discharge switching is as follows.
(5a) When the operation button (operation unit 920) is in the pushed position (button concave), the raw water is discharged.
(5b) When the operation button (operation unit 920) is in the pop-out position (button convex), purified water is discharged.

The faucet device 900 has a water guiding unit 902 and a water discharging unit 904. Although not shown in its entirety, the structure of the headrace section 902 is similar to that of other embodiments. The water guide portion 902 has a cavity portion for arranging the water quality purification cartridge and a water quality purification cartridge arranged in the cavity portion. This water purification cartridge is replaceable. This water quality purification cartridge is the same as the above-mentioned water quality purification cartridge 106.

The water discharge portion 904 is located on the downstream side of the water guide portion 902. The water discharge unit 904 constitutes the tip portion of the faucet device 900.

The water discharge unit 904 has a water discharge port (not shown). Water is discharged from the spout. Either purified water or raw water is discharged from the spout.

The upper part of FIG. 47 is an exploded plan view of the water discharge portion 904. The middle part of FIG. 47 is an exploded sectional view of the water discharge portion 904. The lower part of FIG. 47 is an exploded side view of the water discharge portion 904.

The water discharge unit 904 has an operation unit 920. The operation unit 920 is a push button. The push button 920 functions as a switching button for switching between the raw water flow path and the purified water flow path.

The water discharge unit 904 has an alternate operation type push button mechanism 930. By this push button mechanism 930, each time the push button 920 is pushed, the position of the push button 920 is switched between the first position (pop-out position) and the second position (push position).

As shown in FIG. 47, the push button mechanism 930 includes a connecting member 931, an O-ring 933, a first switching frame 932, a second switching frame 934, a switching ring 936, a switching shaft 938, a first switching case 940, and an O-ring 942. It has a second switching case 944, a packing 946, a third switching case 948, an O-ring 950, a coil spring CS1 and a coil spring CS2. Further, the water discharge unit 904 has a head 952. The connecting member 931 connects the operation unit 920 and the first switching top 932.

The push button mechanism 930 also uses a thrust lock mechanism. Similar to the push button mechanism 130 described above, the push button mechanism 930 is an alternate operation type push button mechanism.

The alternate operation of the push button mechanism 930 is the same as that of the first to fourth embodiments described above.

The faucet device 900 has a water purification flow path that permeates the water purification material and reaches the spout, and a raw water flow path that reaches the spout without permeating the water purification material. The water purification flow path and the raw water flow path leading to the water discharge unit 904 are the same as those of the above-mentioned faucet device 100.

The water discharge unit 904 has a switching valve V1 for switching whether the water discharged from the water discharge port is raw water or purified water. As shown in FIG. 47, the switching valve V1 has a raw water valve portion VG capable of opening and closing the raw water flow path and a water purification valve portion VJ capable of opening and closing the purified water flow path. Further, the switching valve V1 has a valve joint Z3.

The raw water valve portion VG and the water purification valve portion VJ are indirectly connected via a valve joint Z3. The positional relationship between the raw water valve portion VG and the water purification valve portion VJ changes. The details of this connection structure will be described later.

The raw water valve portion VG has a shaft body Z1 and a raw water sealing member PK1. The raw water seal member PK1 is a packing. The raw water valve portion VG has a raw water seal member PK1.

The water purification valve portion VJ has a shaft body Z2 and a water purification seal member S2. The purified water seal member S2 is an O-ring. The water purification valve portion VJ has a water purification seal member S2.

One end of the valve joint Z3 is connected to the shaft body Z1. The other end of the valve joint Z3 is connected to the shaft body Z2.

48 (a) is a perspective view of the shaft body Z1 of the raw water valve portion VG, FIG. 48 (b) is a perspective view of the shaft body Z1 viewed from another angle, and FIG. 48 (c) is a perspective view of the shaft body Z1. It is a side view of. The shaft body Z1 has a front end portion 960 that engages with the push button mechanism 930 (switching shaft 938) and a rear end portion 962 that engages with the valve joint Z3. Further, the shaft body Z1 has a seal holding portion 964 to which the raw water seal member PK1 is attached. The seal holding portion 964 has a front flange 966 that supports the raw water seal member PK1 from the front, and a rear flange 968 that supports the raw water seal member PK1 from the rear. Between the front end portion 960 and the seal holding portion 964, a large diameter portion 970 including the front end portion 960 and an intermediate portion 972 located behind the large diameter portion 970 are provided. The intermediate portion 972 has a shape as if two flat plates intersect at a right angle.

The rear end 962 has an insertion portion 976 that is inserted into the valve joint Z3 and an engaging protrusion 978 that engages the valve joint Z3.

49 (a) is a perspective view of the shaft body Z2 of the water purification valve portion VJ, FIG. 49 (b) is a perspective view of the shaft body Z2 viewed from another angle, and FIG. 49 (c) is a perspective view of the shaft body Z2. It is a side view of. The shaft body Z2 has a front end portion 990 engaged with the valve joint Z3 and a rear end portion 994 provided behind the front end portion 990.

The front end portion 990 has a central shaft portion 996 and a rail portion 998. The central shaft portion 996 extends along the center line of the shaft body Z2. The rail portion 998 is provided on the central shaft portion 996. The rail portion 998 extends along the central shaft portion 996. A plurality (two) rail portions 998 are provided. The plurality of rail portions 998 are evenly arranged (every 180 °) in the circumferential direction of the central shaft portion 996.

The front end 990 has an engaging projection 1000. The engagement protrusion 1000 is provided on the central shaft portion 996.

The rear end portion 994 has a seal holding portion 1002. The seal holding portion 1002 forms a peripheral groove for holding the purified water seal member S2. The packing holding portion 1002 has a front flange 1004 that supports the water purification seal member S2 from the front, and a rear flange 1006 that supports the water purification seal member S2 from the rear. The water purification seal member S2 is arranged between the front flange 1004 and the rear flange 1006.

50 (a) is a perspective view of the valve joint Z3, FIG. 50 (b) is a perspective view of the valve joint Z3 as viewed from another angle, and FIG. 50 (c) is a side view of the valve joint Z3. .. The valve joint Z3 has a front end portion 1110 that engages with the shaft body Z1 and a rear end portion 1112 that engages with the shaft body Z2.

Further, the valve joint Z3 has a support protrusion 1114. The support projection 1114 extends outward. In this embodiment, four support protrusions 1114 are provided. The support projection 1114 has a rear end surface 1116. The rear end surface 1116 is parallel to the plane perpendicular to the center line of the valve joint Z3.

The front end portion 1110 has a large-diameter inner surface 1120, an annular stepped surface 1122, and a small-diameter inner surface 1124 (see FIG. 50 (a)). The large diameter inner surface 1120 is a circumferential surface. The large-diameter inner surface 1120 extends rearward from the front end surface of the valve joint Z3. The small diameter inner surface 1124 is a circumferential surface. The diameter of the small diameter inner surface 1124 is smaller than the diameter of the large diameter inner surface 1120. The small diameter inner surface 1124 is located behind the large diameter inner surface 1120. The annular step surface 1122 is located at the boundary between the large diameter inner surface 1120 and the small diameter inner surface 1124. The annular step surface 1122 connects the large-diameter inner surface 1120 and the small-diameter inner surface 1124. The annular step surface 1122 is a surface facing forward. The large-diameter inner surface 1120, the annular stepped surface 1122, and the small-diameter inner surface 1124 are coaxial.

The rear end portion 1112 forms a cylindrical portion 1125 as a whole. The rear end portion 1112 has a circumferential outer surface 1126 and a slide portion 1127. The slide portion 1127 has a shaft insertion hole 1128 and a slit 1130. The circumferential outer surface 1126 constitutes the outer surface of the cylindrical portion 1125.

The shaft insertion hole 1128 is formed along the center line of the cylindrical portion 1125. The shaft insertion hole 1128 extends along the center line of the valve joint Z3. The shaft insertion hole 1128 is opened rearward (see FIG. 50 (b)).

The slit 1130 extends along the center line of the valve joint Z3. The slit 1130 extends in the same direction as the shaft insertion hole 1128. A plurality (two) slits 1130 are provided. The plurality of slits 1130 are evenly arranged (every 180 °) around the center line of the valve joint Z3. The slit 1130 penetrates between the shaft insertion hole 1128 and the outside of the valve joint Z3. As a result, the cylindrical portion 1125 is divided into two parts. The slit 1130 is opened rearward (see FIG. 50 (c)).

The shaft body Z1 and the shaft body Z2 are connected via such a valve joint Z3.

As shown in FIGS. 44, 45 and 46, the engaging projection 978 of the shaft body Z1 is engaged with the recess formed inside the valve joint Z3. In this way, the rear end portion 962 of the shaft body Z1 is engaged with the valve joint Z3. Regardless of the position of the operation unit 920 (protruding position, pushing position, maximum pushing position, etc.), the relative positional relationship between the shaft body Z1 and the valve joint Z3 does not change.

As shown in FIGS. 44, 45 and 46, the front end portion 990 of the shaft body Z2 is inserted into the shaft insertion hole 1128 (see FIG. 50 (b)) of the valve joint Z3. As can be seen by comparing FIGS. 44 to 46, the front end 990 can slide within the shaft insertion hole 1128. That is, the shaft body Z2 and the valve joint Z3 are connected to each other in a slidable state. The faucet device 900 includes a first slide member and a second slide member that are slidably connected to each other. The valve joint Z3 is an example of the first slide member. The shaft body Z2 is an example of the second slide member. FIG. 44 shows a state in which the valve joint Z3 is slid forward most forward with respect to the shaft body Z2. In this state, the engaging protrusion 1000 of the shaft body Z2 is in contact with the stepped surface of the valve joint Z3.

The slide movement changes the relative positional relationship between the shaft body Z2 and the valve joint Z3. The shaft body Z2 and the valve joint Z3 can move relative to each other along the specific direction (the front-rear direction). Along with this, both the shaft body Z1 and the shaft body Z2 can move relative to each other. The shaft body Z1 and the shaft body Z2 are connected so as to be able to move relative to each other along the specific direction (the front-back direction).

FIG. 51 is a partial cross-sectional perspective view showing a shaft body Z2, a valve joint Z3, a second switching case 944, a switching shaft 938, and the like in the assembled water discharge portion 904. This perspective view is a view seen from diagonally rearward. In the cross section of this perspective view, the rear end portion 1112 of the valve joint Z3 and the central shaft portion 996 and the rail portion 998 of the shaft body Z2 inserted therein are shown. As shown in this figure, the central shaft portion 996 is slidably inserted into the shaft insertion hole 1128. Further, the rail portion 998 of the shaft body Z2 is slidably inserted into the slit 1130 of the valve joint Z3. With these structures, the valve joint Z3 and the shaft body Z2 are slidably connected to each other. As described above, the valve joint Z3 connecting the raw water valve portion VG and the water purification valve portion VJ has a slide portion 1127. The water purification valve portion VJ has a front end portion 990 that can slide and move in a specific direction in the slide portion 1127.

A coil spring CS1 is arranged between the shaft body Z2 and the valve joint Z3. As shown in FIGS. 44 to 46, the front end of the coil spring CS1 is in contact with the valve joint Z3. The rear end of the coil spring CS1 is in contact with the shaft body Z2 (front flange 1004). The coil spring CS1 urges the shaft body Z2 and the valve joint Z3 in a direction in which they are separated from each other. Regardless of the relative positional relationship between the shaft body Z2 and the valve joint Z3, the coil spring CS1 urges the shaft body Z2 and the valve joint Z3 in a direction to separate them from each other.

The shaft body Z2, the valve joint Z3, and the coil spring CS1 form a cushioning mechanism that allows an overstroke. This cushioning mechanism includes a stretchable elastic body that expands and contracts according to the amount of movement of the operation unit 920 from the push-in position to the maximum push-in position. In the present embodiment, the coil spring CS1 is adopted as the stretchable elastic body. This buffering mechanism allows the operating unit 920 to take the maximum pushing position.

As described above, the cushioning mechanism has a first slide member, a second slide member, and a stretchable elastic body. The first slide member and the second slide member are configured to be able to slide and move with each other in a specific direction. The stretchable elastic body urges the first slide member and the second slide member in a direction in which they are separated from each other. The first slide member can slide and move with respect to the second slide member according to the amount of movement of the operation unit 920 from the push-in position to the maximum push-in position. The valve joint Z3 is an example of the first slide member. The shaft body Z2 is an example of the second slide member. The coil spring CS1 is an example of a stretchable elastic body.

FIG. 52 is a partial cross-sectional perspective view showing a valve joint Z3, a shaft body Z1, a third switching case 948, a shaft body Z1, and the like in the assembled water discharge portion 904. This perspective view is a view seen from diagonally forward.

In FIG. 52, the intermediate portion 972 of the shaft body Z1 is shown in cross section. As shown in FIGS. 44 to 46, the intermediate portion 972 is inserted into the insertion cavity portion 949 of the third switching case 948. As shown in FIG. 52, the intermediate portion 972 is composed of a plurality of (four) plate-shaped portions evenly arranged in the circumferential direction. The intermediate portion 972 is guided by the insertion cavity portion 949 and moves the insertion cavity portion 949 in a specific direction (front-back direction). As shown in FIG. 52, due to the structure of the intermediate portion 972, a space is secured in the insertion cavity portion 949 in the state where the intermediate portion 972 is inserted. This space functions as a raw water flow path. The intermediate portion 972 is an example of an insertion guide portion that is guided while being inserted into the insertion cavity portion 949. The insertion guide portion (intermediate portion 972) is configured to secure a space in the insertion cavity portion 949 while being guided by the insertion cavity portion 949. This space secures a flow path for the fluid (raw water).

As described above, the adjacent portion (third switching case 948) has an insertion cavity portion 949 through which the raw water valve portion VG can be inserted. The raw water valve portion VG has an insertion guide portion 972 that is inserted into the insertion cavity portion 949 and guided to move in the specific direction. In this embodiment, it is not necessary to provide the guide portion N2 (see FIG. 19 and the like) at the rear end portion of the switching valve V1. Therefore, the channel area of purified water can be increased.

As shown in FIGS. 44 to 46, the coil spring CS2 is arranged outside the coil spring CS1. The inner diameter of the coil spring CS2 is larger than the outer diameter of the coil spring CS1. The front end of the coil spring CS2 is in contact with the valve joint Z3 (support projection 1114). More specifically, the front end of the coil spring CS2 is in contact with the rear end surface 1116 of the support projection 1114. The rear end of the coil spring CS2 is in contact with the head 952. The coil spring CS2 urges the valve joint Z3 forward. Regardless of the position of the valve joint Z3, the coil spring CS2 urges the valve joint Z3 forward.

The coil spring CS2 is a component of the thrust lock mechanism portion of the alternate operation method. The coil spring CS2 bears the driving force of the thrust lock mechanism portion by urging the valve joint Z3 forward. Further, the coil spring CS2 realizes a state in which the water purification valve portion VJ is released (purified water discharge state) by urging the switching valve V1 forward.

When the operation unit 920 is in the protruding position, the raw water sealing member PK1 comes into contact with the raw water valve sealing surface M3 (FIG. 44). Due to this contact, the raw water valve portion VG is closed. Further, when the operation unit 920 is in the protruding position, the water purification seal member S2 is separated from the water purification valve sealing surface K3. Therefore, the water purification valve portion VJ is opened. As a result, purified water is discharged.

When the operation unit 920 is in the push-in position, the raw water sealing member PK1 is separated from the raw water valve sealing surface M3 (FIG. 46). Therefore, the raw water valve portion VG is opened. Further, when the operation unit 920 is in the pushed-in position, the water purification seal member S2 is in contact with the water purification valve seal surface K3. Therefore, the water purification valve portion VJ is closed. As a result, raw water is discharged.

FIG. 53 is an enlarged cross-sectional view showing the vicinity of the raw water sealing member PK1. The seal structure according to the raw water seal member PK1 has a structure capable of achieving a more reliable valve seal. Since this seal structure can be widely applied to both the raw water valve portion VG and the water purification valve portion VJ, the seal structure will be generally generalized and described below.

This seal structure has a seal member PK. The raw water seal member PK1 according to the fifth embodiment is an example of the seal member PK. The seal member PK may be a raw water seal member or a purified water seal member.

The seal member PK has a base portion 1200 and a seal portion 1202 integrally connected to the base portion 1200. The base 1200 is annular as a whole. The seal portion 1202 is annular as a whole. This seal member PK is installed in the first member F1. In the fifth embodiment, the first member F1 is composed of a shaft body Z1 and a valve joint Z3. The first member F1 may be a single member or may be composed of two or more members. The bottom surface of the base 1200 (the inner peripheral surface of the seal member PK) is parallel to the center line of the first member F1.

The first member F1 has an installation portion 1210 on which at least a part of the base portion 1200 is installed. The installation portion 1210 is a recess formed toward the center side of the first member F1 (inward in the radial direction of the shaft body Z1). The installation portion 1210 is annular as a whole. The bottom surface of the installation portion 1210 is parallel to the specific direction. Each of the side surfaces of the installation portion 1210 is perpendicular to a particular direction. In the fifth embodiment, the installation portion 1210 is a peripheral groove formed by the front flange 966 and the rear flange 968 (see FIGS. 48 (a) to 48 (c)).

The first member F1 has a first seal contact portion 1212 that abuts on the seal portion 1202. The first seal contact portion 1212 is in contact with the rear surface of the seal portion 1202. The first seal contact portion 1212 is annular as a whole. The first seal contact portion 1212 is perpendicular to a specific direction.

The second member F2 abuts on the seal member PK to achieve valve sealing. In the fifth embodiment, the second member F2 is the third switching case 948. The third switching case 948 is an example of an adjacent portion. The second member F2 may be a single member or may be composed of two or more members. The seal member PK (the first seal contact portion 1202) is compressed between the first member F1 and the second member F2 to seal between the two members.

The second member F2 has a second seal contact portion 1216 that abuts on the seal portion 1202. The second seal contact portion 1216 is annular as a whole. In the fifth embodiment, the second seal contact portion 1216 is a seal surface M3 for a raw water valve.

With the operation of the operation unit 920, the relative positions of the first member F1 and the second member F2 change. The direction of this change is a specific direction. Due to this change, the distance between the first seal contact portion 1212 and the second seal contact portion 1216 changes. Due to this change in distance, the flow path between the first member F1 and the second member F2 is closed, and the flow path between the first member F1 and the second member F2 is opened. The state and is achieved. FIG. 53 shows a closed state.

In the present embodiment, the second seal contact portion 1216 has a convex portion 1218. The convex portion 1218 is annular as a whole. The convex portion 1218 projects rearward. When the second seal contact portion 1216 comes into contact with the seal member PK, the convex portion 1218 bites into the seal member PK. The convex portion 1218 deforms the seal member PK into a shape (concave state) corresponding to the convex portion 1218 (not shown). This deformation improves the sealing property.

The installation portion 1210 of the first member F1 has a storage portion 1220 in which at least a part of the base 1200 is housed. The storage portion 1220 is annular as a whole. In the fifth embodiment, the storage portion 1220 is a recess formed by the shaft body Z1 and the valve joint Z3. The storage portion 1220 is a recess toward the rear. A part of the base 1200 is housed in this recess. Further, the installation portion 1210 of the first member F1 has a foundation portion 1222 which is a portion other than the storage portion 1220. The base portion 1222 is circular as a whole. The storage portion 1220 is located behind the base portion 1222. The storage portion 1220 is located on the side opposite to the second member F2 with respect to the base portion 1222.

The base 1200 has a surface 1226 on the side of the seal 1202. This surface 1226 is annular as a whole. The storage portion 1220 has a base holding surface 1228 that abuts on the surface 1226 of the base 1200. The base holding surface 1228 is annular as a whole. The base holding surface 1228 is parallel to a specific direction. The base holding surface 1228 is in contact with the outer peripheral surface of the storage portion 1220.

The first member F1 has a cover portion 1230. The cover portion 1230 is located on the radial outer side of the seal member PK. The cover portion 1230 is annular as a whole. The cover portion 1230 is a cylinder as a whole. The cover portion 1230 abuts on the surface 1232 of the seal portion 1202 of the seal member PK opposite to the base portion 1200. The cover portion 1230 is in contact with the outer peripheral surface of the seal portion 1202.

The seal member PK has a surface 1240 that abuts on the second seal contact portion 1216. The surface 1240 is perpendicular to a particular direction. The second seal contact portion 1216 is annular as a whole. The angle θ1 shown in FIG. 53 is an angle formed by the surface 1240 and the change direction DR1 in the relative positions of the first member F1 and the second member F2. From the viewpoint of suppressing wear and damage of the seal portion 1202, this angle is preferably substantially vertical (80 degrees or more and 100 degrees or less), more preferably 85 degrees or more and 95 degrees or less, and even more preferably 90 degrees. In the present embodiment, the change direction DR1 is a specific direction. In the present embodiment, the change direction DR1 is the front-back direction.

In the embodiment of FIG. 53, the first member F1 is composed of the shaft body Z1 and the valve joint Z3, and the second member F2 is composed of the third switching case 948. However, it goes without saying that it is not limited to this form. The first member F1 and the second member F2 may be in a relationship in which their relative positions can be changed. A member constituting at least a part of the switching valve V1 or one of the adjacent portions is referred to as a first member F1. A member constituting at least a part of the switching valve V1 or the other of the adjacent portions is referred to as a second member F2.

In all of the above-described embodiments 1 to 5, the raw water valve portion VG and the water purification valve portion VJ are arranged along the same straight line extending along a specific direction (moving direction of the switching valve V1). Therefore, it is possible to reduce the size of the water discharge portion. Further, since the moving direction of the operating portion coincides with the moving direction of the switching valve V1, the transmission of the operating force is ensured without waste. Therefore, it is excellent in operability and opening / closing certainty.

In the faucet described in Japanese Patent No. 4653846 described above, the valve is closed by fitting the ball valve into the valve seat portion. Therefore, a large operating force may be required when removing the ball valve from the fitting. When a large operating force is required, the durability of the operating portion may be adversely affected. In addition, the ball valve may wear the corners of the opening of the valve seat, resulting in poor closing. On the other hand, in the first to fourth embodiments, since the valve is opened and closed only by moving the switching valve V1 in the axial direction, the above-mentioned problem related to the ball valve can be solved.

In the raw water valve portion VG and the water purification valve portion VJ described in the above embodiment, the mode in which the valve is closed is roughly classified into three types. The first form is a configuration in which a sealing member (for example, an O-ring) is brought into contact with the inner surface of the cylinder. The raw water valve portion VG of the first embodiment and the water purification valve portion VJ of the third embodiment are of this embodiment. This first form is also referred to as an inner surface contact seal. The second form is a configuration in which a sealing member (for example, an O-ring) is brought into contact with an inclined surface. This second form is also referred to as an inclined surface contact seal. The third form is a configuration in which the seal member (for example, the seal member PK) is brought into contact with the vertical surface. This third form is also referred to as a vertical surface contact seal.

The inner surface contact seal has the effect that the position of the seal can fluctuate in the axial direction, which contributes to the certainty of the seal due to the absorption of dimensional error and also to the tolerance of the overstroke.

On the other hand, the inclined surface contact seal and the vertical surface contact seal have the effect of increasing the cross-sectional area of the flow path. In the inner surface contact seal, this insertion length is essential because the seal member is more or less inserted inside the inner surface of the cylinder. The seal member moves by a predetermined stroke between the open state and the closed state of the valve, but the distance between the open end of the inner surface of the cylinder and the seal member in the open state is the stroke minus the insertion length. Will be. The stroke cannot be fully utilized as the flow path width by the amount of the insertion length, and the flow path cross-sectional area becomes small. On the other hand, in the inclined surface contact seal and the vertical surface contact seal, the insertion length is zero, so that the distance between the inclined surface or the vertical surface and the seal member in the open state is equal to the stroke. That is, since the stroke can be fully utilized as the flow path width, the flow path cross-sectional area becomes large.

It is the first embodiment, the second embodiment and the fourth embodiment that the inclined surface contact seal is adopted for the water purification valve portion VJ. It is the second embodiment, the third embodiment and the fourth embodiment that the inclined surface contact seal is adopted for the raw water valve portion VG. It is the fifth embodiment that the vertical surface contact seal is adopted for the raw water valve portion VG.

In the second embodiment and the fourth embodiment, the water purification valve inclined surface K1 is a forward facing surface, and the water purification seal member S2 abuts on the front side of the water purification valve inclined surface K1. Therefore, the water purification seal member S2 cannot move behind the inclined surface K1 for the water purification valve. In this case, the problem is how to allow the overstroke caused by the thrust lock mechanism. In each of the above embodiments, the insertion space portion U1 is provided to allow the switching valve end portion to move backward due to the overstroke. Further, by providing a support elastic body (for example, a coil spring) in the insertion space portion U1, the switching valve V1 is supported while being urged forward while allowing the insertion amount of the insertion portion N1 to fluctuate. ..

Further, the relative position between the switching valve V1 and the water purification seal member S2 can be changed by the above-mentioned inner diameter sliding. Therefore, the movement of the switching valve V1 due to the overstroke is allowed while the inclined surface contact seal is achieved.

The inner diameter sliding has a smaller frictional force and less wear than the outer diameter sliding. Inner diameter sliding contributes to reduction of operating force and improvement of durability.

As described above, in the second embodiment and the fourth embodiment, since the guide portion N2 is provided, the inclination of the entire switching valve V1 is prevented, and stable operability and open / close reliability are achieved.

As described above, the inclined surface contact seal has a larger flow path cross-sectional area than the inner surface contact seal. Inclined surface contact seals also have other advantages. The piston movement in the inner surface contact seal causes the O-ring to be inserted and removed into the cylindrical surface. Therefore, it is preferable that the O-ring is coated with grease for reducing sliding resistance. When grease runs out due to repeated insertion and removal, sliding resistance increases. Therefore, an increase in the switching operation load and a malfunction in switching may occur. On the other hand, since the inclined surface contact seal does not slide on the seal surface, the above-mentioned problem associated with running out of grease does not occur. Further, the inclined surface contact seal can eliminate the need for grease.

The outer diameter of the guide portion N2 is A1 (mm), and the diameter of the inner surface of the cylinder of the insertion space portion U1 into which the guide portion N2 is inserted is A2 (mm). From the viewpoint of slidability and scratch suppression, the difference (A2-A1) is preferably 0.05 mm or more, more preferably 0.1 mm or more, still more preferably 0.15 mm or more. From the viewpoint of suppressing the inclination of the switching valve V1, the difference (A2-A1) is preferably 1.0 mm or less, more preferably 0.6 mm or less, and further preferably 0.4 mm or less. The outer diameter A1 of the guide portion N2 is preferably 3 mm or more, more preferably 5 mm or more, still more preferably 6 mm or more, from the viewpoint of securing the flow path area and the rigidity required for the guide portion N2. Further, from the viewpoint of suppressing the increase in size of the faucet device, the outer diameter A1 of the guide portion N2 is preferably 12 mm or less, more preferably 10 mm or less, and further preferably 8 mm or less.

The cross-sectional shape of the guide portion N2 may be circular, but a shape other than circular is preferable. In the case of a circular shape, the flow path is only the gap of (A2-A1), and a sufficient flow path area cannot be secured. Therefore, it is preferable to divide the guide portion N2. In addition, this "division" means having an outward extending portion divided into a plurality of positions in the circumferential direction and extending outward, and the "division number" means the number of the outward extending portion. do. Since the guide portion N2 also serves as a spring retainer, the number of divisions should be at least three from the viewpoint of the stability of the spring retainer. Further, if the number of divisions is large, the flow area approaches a circle and the flow rate area becomes small. Therefore, it is desirable that the number of divisions is 8 divisions or less, further 6 divisions or less, and particularly 4 divisions or less.

If it is not circular, the guide portion N2 preferably satisfies the following (configuration a).
(Structure a) All of the four circumferential regions (90 ° regions) obtained by partitioning the guide portion N2 at 90 ° intervals in the circumferential direction include a portion that satisfies the numerical limitation of (A2-A1) above.
In this (configuration a), the distance between the outer extending portion and the inner surface of the cylinder corresponds to the above (A2-A1). Further, although there are a large number of partition positions for partitioning every 90 ° in the circumferential direction, it is preferable that the above (configuration a) is satisfied at all the partition positions.

When the cross-sectional shape of the guide portion N2 is other than a circle, the circumscribed circle circumscribed to each of the divided outer extending portions of the guide portion N2 is specified, and the diameter of the circumscribed circle is set to the above A1 to satisfy the above numerical limitation. It is better to make it.

A space portion is formed between adjacent outward extending portions. The total cross-sectional area of the space in the circumscribed circle (total cross-sectional area obtained by adding the cross-sectional areas of the circumscribed circle and the outer contour of the outer extending portion) is H1, and the area of the circumscribed circle is defined as H1. When H2 is used, the value of (H1 / H2), which is the ratio thereof, is preferably 0.1 or more, more preferably 0.3 or less, and particularly preferably 0.5 or more, from the viewpoint of securing the flow path area. From the viewpoint of ensuring the rigidity and strength required for the guide portion N2, it is preferably 0.9 or less, more preferably 0.8 or less, and particularly preferably 0.7 or less.

As described above, in the first embodiment (enlarged portion of FIG. 2), the second embodiment (FIG. 19), the third embodiment (FIG. 28) and the fourth embodiment (FIG. 39), the original water is discharged in the purified water discharge state. A puddle space E1 is formed. With respect to this raw water pool space E1, in the present application, the pressure receiving surface PS1 on the distal end side and the pressure receiving surface PH1 on the main body side are defined.

In the raw water pool space E1, the switching valve V1 has a pressure receiving surface PS1 on the tip side in which the force due to the water pressure of the raw water acts toward the tip of the faucet in the purified water discharge state, and the force due to the water pressure of the raw water in the purified water discharge state toward the faucet body. It has a main body-side pressure receiving surface PH1 that acts (see the enlarged portion in FIG. 2 and FIG. 39). Both the front end side pressure receiving surface PS1 and the main body side pressure receiving surface PH1 are pressure receiving surfaces facing the raw water pool space E1.

In the present application, the area of the pressure receiving surface PS1 on the front end side is Ms, and the area of the pressure receiving surface PH1 on the main body side is Mh. The area Ms and the area Mh are defined as projected areas projected on a plane perpendicular to the axial direction. Therefore, the value obtained by multiplying the water pressure in the raw water pool space E1 by the area Ms is the water pressure in the axially forward direction acting on the pressure receiving surface PS1 on the distal end side. Further, the value obtained by multiplying the water pressure in the raw water pool space E1 by the area Mh is the water pressure in the axial direction rearward acting on the pressure receiving surface PH1 on the main body side.

Since the raw water does not permeate the water purification cartridge, the water pressure is higher than that of the purified water. This high water pressure greatly affects the operating force in the operating unit. In particular, when the operating direction of the operating portion coincides with the acting direction of the water pressure, the influence on the operating force is large.

In the first embodiment, the rearward facing surface 170a (see FIGS. 10A to 10C) formed on the rear flange 170 of the shaft body Z1 is the front end side pressure receiving surface PS1. In addition, on the surface of the first raw water sealing member S11, the portion facing the raw water pool space E1 is also the tip side pressure receiving surface PS1. This is because the first raw water seal member S11 is fixed to the shaft body Z1.

In the first embodiment, the forward facing surface 172a (see FIGS. 10A to 10C) formed on the front flange 172 of the shaft body Z1 is the main body side pressure receiving surface PH1. In addition, on the surface of the second raw water sealing member S12, the portion facing the raw water pool space E1 is also the pressure receiving surface PH1 on the main body side. This is because the second raw water seal member S12 is fixed to the shaft body Z1.

In the first embodiment, the area Ms and the area Mh are substantially the same. Approximately the same means that Ms / Mh is 0.9 or more and 1.1 or less, the lower limit is more preferably 0.97 or more, further preferably 0.99 or more, and the upper limit is about. It is more preferably 1.05 or less, still more preferably 1.03 or less, still more preferably 1.01 or less.

In the present embodiment, since the area Ms and the area Mh are substantially the same, the water pressure in the front acting on the pressure receiving surface PS1 on the tip side and the water pressure in the rear acting on the pressure receiving surface PH1 on the main body side are almost the same. Will be offset. Therefore, although the high water pressure due to the raw water acts on the switching valve V1, the influence on the operating force can be suppressed, and the operability of switching is enhanced.

In the fourth embodiment, the stepped surface 771 formed at the boundary between the large diameter portion 770 and the intermediate portion 772 is a rearward facing surface (see FIGS. 42 (a) to 42 (c)). The rear facing surface 771 is the tip side pressure receiving surface PS1. Of the surface of the O-ring 742, the portion facing the raw water pool space E1 is not the O-ring fixed to the switching valve V1, and therefore does not correspond to the tip side pressure receiving surface PS1.

In the fourth embodiment, the slope 773 formed at the boundary between the intermediate portion 772 and the front flange 766 is a forward facing surface (see FIGS. 42 (b) and (c)). The forward surface 773 is a pressure receiving surface PH1 on the main body side. Of the surface of the raw water sealing member S1, the portion facing the raw water pool space E1 is also the pressure receiving surface PH1 on the main body side.

In the fourth embodiment, the area Ms is larger than the area Mh.

As described above, in the fourth embodiment, the inclined surface M1 for the raw water valve is a rearward surface (see FIG. 40). In the fourth embodiment, the raw water sealing member S1 is configured to abut on the faucet main body side of the raw water valve inclined surface M1. Further, as described above, in the fourth embodiment, the operation unit 720 is in the pop-out position in the purified water discharge state.

In this fourth embodiment, the following phenomenon occurs. In the purified water discharge state, if the operation unit 720 (button) is not intended to be pressed and the operation unit 720 is accidentally touched by a hand or the like, the raw water seal member S1 is slightly separated from the raw water valve inclined surface M1. Once separated a little, the raw water flows between the raw water sealing member S1 and the inclined surface M1 for the raw water valve. The urging force due to the flow of the raw water is added to the force due to the water pressure, and the switching valve V1 is pushed toward the faucet main body side. As a result, the switching valve V1 is in a situation where the opening of the raw water valve portion VG is more likely to continue, and unintended discharge (including mixing) of raw water is likely to occur.

As a method for solving this problem, it is conceivable to increase the spring elasticity (spring constant) of the coil spring CS2 that urges the switching valve V1 to the faucet main body side. However, if the spring elasticity is increased, the force (operating force) required for the normal operation of the button 720 also increases, and the operability deteriorates.

On the other hand, in the fourth embodiment, the area Ms of the front end side pressure receiving surface PS1 is larger than the area Mh of the main body side pressure receiving surface PH1. With this structure, the switching valve V1 is pushed toward the tip of the faucet by the water pressure of the raw water in the raw water pool space E1. This solves the above problem.

From such a viewpoint, Ms / Mh is preferably larger than 1.0, more preferably 1.05 or more, further preferably 1.1 or more, and particularly preferably 1.15 or more. When Ms / Mh is excessive, the operating force required to start pressing the button 720 in the normal operation becomes large, and the operability may decrease. From this viewpoint, Ms / Mh is preferably 1.5 or less, more preferably 1.4 or less, further preferably 1.3 or less, and particularly preferably 1.25 or less.

As described above, since the raw water valve portion VG and the water purification valve portion VJ are arranged along the same straight line extending in a specific direction (moving direction of the switching valve V1), the water discharge portion can be miniaturized.

As described above, in the fifth embodiment, the coil spring CS2 having a large diameter and the coil spring CS1 having a small diameter are used. Of these, the coil spring CS2 plays the same role as the support elastic body described above.

In the second embodiment or the like, the switching valve V1 is supported while being urged toward the front by providing a support elastic body (coil spring CS2) in the insertion space U1. By this urging, the state where the water purification valve portion VJ is released is achieved. Also in the fifth embodiment, the large-diameter coil spring CS2 urges the switching valve V1 toward the front, and the state in which the water purification valve portion VJ is released is achieved by this urging.

On the other hand, unlike the second embodiment, in the fifth embodiment, the large-diameter coil spring CS2 is arranged not behind the switching valve V1 but around (outside) the switching valve V1. In this configuration, it is not necessary to provide a spring receiving surface on the rear end surface of the shaft body Z2 in the water purification valve portion VJ. Therefore, the channel area of running water can be increased. Further, in the configuration in which the coil spring as the supporting elastic body is inserted into the insertion space portion U1, the flow path area is determined by the inner diameter of the spring, so that the flow path area is further smaller than that of the insertion space portion U1. On the other hand, in the fifth embodiment, since there is no spring that further narrows the flow path area of the insertion space portion U1, the flow path area increases. In addition, the coil spring CS2 arranged around (outside) the switching valve V1 has a large inner diameter and does not narrow the water purification flow path.

With respect to the fifth embodiment, the embodiment of FIG. 53 contributes to enhancing the stability of the seal.

54 (a) and 54 (b) are diagrams for explaining the deformation and displacement of the sealing member due to the influence of the fluid. In the embodiment of FIGS. 54 (a) and 54 (b), the seal member S1 is arranged on the movable shaft body Z1, and the seal member S1 comes into contact with the seal surface A1 to close the valve. FIG. 54A shows a state immediately before the closed state. In FIG. 54 (a), the curved arrow indicates the flow of fluid (water). In the state of FIG. 54 (a), the flow velocity of the fluid is large because the water flow area is small. Therefore, the pressure of the portion of the surface of the seal member S1 that is in contact with the fluid drops, and a differential pressure is generated. Due to this differential pressure, a force acting outward in the radial direction acts on the seal member S1 (see the black arrow in FIG. 54 (a)). Further, the drag force from the fluid acts on the seal member S1 displaced outward (fluid side) in the radial direction. Therefore, the seal member S1 is displaced and / or deformed so as to expand radially outward (see FIG. 54 (b)). When such displacement and / or deformation occurs, leakage may occur from the sealing surface A1 or the sealing surface A2.

On the other hand, in the embodiment of FIG. 53, the displacement and deformation of the seal member PK are suppressed by the installation portion 1210, the storage portion 1220, and the base holding surface 1228. Further, the cover portion 1230 further suppresses the displacement and deformation of the seal member PK.

The above-mentioned differential pressure increases as the flow velocity increases. Therefore, the displacement and deformation of the seal member PK increase as the flow velocity increases. The water pressure of raw water is higher than the water pressure of purified water. Therefore, in the raw water valve, the seal member PK is likely to be displaced and deformed. From this point of view, the embodiment of FIG. 53 is preferably applied to the raw water valve. The seal member PK in the embodiment of FIG. 53 is preferably the raw water seal member PK1.

FIG. 55 is an enlarged cross-sectional view showing the seal structure of the modified example.

In the embodiment of FIG. 55, the seal member PK is the same as the embodiment of FIG. 53. The seal member PK is annular as a whole. The first member F1 has an installation portion 1210 on which at least a part of the base portion 1200 is installed. The installation portion 1210 is annular as a whole. The installation portion 1210 is a recess formed toward the center side of the first member F1. The bottom surface of the installation portion 1210 is parallel to the specific direction. Each of the side surfaces of the installation portion 1210 is perpendicular to a particular direction.

The first member F1 has a first seal contact portion 1212 that abuts on the seal portion 1202. The first seal contact portion 1212 is in contact with the rear surface of the seal portion 1202. The first seal contact portion 1212 is perpendicular to a specific direction.

The second member F2 abuts on the seal member PK to achieve valve sealing. The seal member PK (the first seal contact portion 1202) is compressed between the first member F1 and the second member F2 to seal between the two members.

The second member F2 has a second seal contact portion 1216 that abuts on the seal portion 1202. The second seal contact portion 1216 has a convex portion 1218. The convex portion 1218 projects rearward. When the second seal contact portion 1216 comes into contact with the seal member PK, the convex portion 1218 bites into the seal member PK. The convex portion 1218 improves the sealing property.

The installation portion 1210 of the first member F1 has a storage portion 1220 in which at least a part of the base 1200 is housed. The storage portion 1220 is a recess toward the rear. A part of the base 1200 is housed in this recess. Further, the installation portion 1210 of the first member F1 has a foundation portion 1222 which is a portion other than the storage portion 1220. The storage portion 1220 is located behind the base portion 1222. The storage portion 1220 is located on the side opposite to the second member F2 with respect to the base portion 1222.

The base 1200 has a surface 1226 on the side of the seal 1202. The storage portion 1220 has a base holding surface 1228 that abuts on the surface 1226 of the base 1200. The base holding surface 1228 is parallel to a specific direction. The base holding surface 1228 is in contact with the outer peripheral surface of the storage portion 1220. The embodiment of FIG. 55 does not have the cover portion 1230 described above. The seal member PK has a surface 1240 that abuts on the second seal contact portion 1216. The surface 1240 is perpendicular to a particular direction.

In the embodiment of FIG. 55, the displacement and deformation of the seal member PK are suppressed by the installation portion 1210, the storage portion 1220, and the base holding surface 1228. However, there is no cover portion as in the embodiment of FIG. 53. Therefore, the degree to which the displacement and deformation of the seal member PK are suppressed is smaller than that of the embodiment of FIG. 53.

FIG. 56 is an enlarged cross-sectional view showing a seal structure of another modified example.

The seal structure shown in FIG. 56 has a seal member PK. The seal member PK has a base portion 1300 and a seal portion 1302 integrally connected to the base portion 1300. This seal member PK is installed in the first member F1.

The first member F1 has an installation portion 1310 in which at least a part of the base portion 1300 is installed. The installation portion 1310 is a recess formed toward the center side of the first member F1. The bottom surface of the installation portion 1310 is parallel to the specific direction. Each of the side surfaces of the installation portion 1310 is perpendicular to a specific direction.

The first member F1 has a first seal contact portion 1312 that abuts on the seal portion 1302. The first seal contact portion 1312 is in contact with the rear surface of the seal portion 1302. The first seal contact portion 1312 is perpendicular to a specific direction.

The second member F2 abuts on the seal member PK to achieve valve sealing. The seal member PK (the first seal contact portion 1302) is compressed between the first member F1 and the second member F2 to seal between the two members.

The second member F2 has a second seal contact portion 1316 that abuts on the seal portion 1302. The second seal contact portion 1316 has a convex portion 1318. The convex portion 1318 is annular as a whole. The convex portion 1318 projects rearward. When the second seal contact portion 1316 comes into contact with the seal member PK, the convex portion 1318 bites into the seal member PK. The convex portion 1318 improves the sealing property.

The installation portion 1310 of the first member F1 has a storage portion 1320 in which at least a part of the base portion 1300 is housed. The storage portion 1320 is a recess toward the rear. A part of the base 1300 is housed in this recess. Further, the installation portion 1310 of the first member F1 has a foundation portion 1322 which is a portion other than the storage portion 1320. The storage portion 1320 is located behind the base portion 1322. The storage portion 1320 is located on the side opposite to the second member F2 with respect to the base portion 1322.

The base 1300 has a surface 1326 on the side of the seal 1302. The storage portion 1320 has a base holding surface 1328 that abuts on the surface 1326 of the base 1300. The base holding surface 1328 is parallel to a specific direction. The base holding surface 1328 is in contact with the outer peripheral surface of the storage portion 1320. The embodiment of FIG. 56 does not have the cover portion 1230 described above. The seal member PK has a surface 1340 that abuts on the second seal contact portion 1316. The surface 1340 is tilted with respect to a particular direction. The surface 1340 is inclined so as to be rearward toward the outside of the first member F1. The surface 1340 is a convex curved surface.

The convex portion 1318 is formed on the opening edge of the hollow portion 1350 (cylindrical hole) formed in the second member F2. Therefore, the convex portion 1318 tends to come into contact with the slope 1340. The convex portion 1318 easily bites into the slope 1340.

In the second member F2, a concave portion 1352 adjacent to the convex portion 1318 is formed. The recess 1352 is annular as a whole. In the second member F2, the concave portion 1352 is provided on the radial outer side of the convex portion 1318. The presence of the recess 1352 prevents portions other than the convex portion 1318 from coming into contact with the surface 1340. The recess 1352 ensures contact between the convex 1318 and the surface 1340.

In the embodiment of FIG. 56, the displacement and deformation of the seal member PK are suppressed by the installation portion 1310, the storage portion 1320, and the base holding surface 1328.

The embodiment of FIG. 56 does not have a cover portion as in the embodiment of FIG. 53. However, as described above, the surface 1340 that abuts on the second seal contact portion 1316 is inclined. Due to this inclination, the second seal contact portion 1316 that comes into contact with the surface 1340 is in a state of suppressing the seal member PK from the outside in the radial direction thereof. Therefore, the displacement and deformation of the seal member PK are further suppressed.

FIG. 57 is an enlarged cross-sectional view showing a seal structure of another modified example.

The seal structure shown in FIG. 57 has a seal member PK. The seal member PK has a base portion 1400 and a seal portion 1402 integrally connected to the base portion 1400. This seal member PK is installed in the first member F1.

The first member F1 has an installation portion 1410 on which at least a portion of the base portion 1400 is installed. The installation portion 1410 is a recess formed toward the center side of the first member F1. The bottom surface of the installation portion 1410 is parallel to the specific direction. Each of the side surfaces of the installation portion 1410 is perpendicular to a particular direction.

The first member F1 has a first seal contact portion 1412 that abuts on the seal portion 1402. The first seal contact portion 1412 is in contact with the rear surface of the seal portion 1402.

The first seal contact portion 1412 has a convex portion 1414. The convex portion 1414 projects forward. The convex portion 1414 is annular as a whole.

The seal portion 1402 has a recess 1415. The recess 1415 is annular as a whole. In the seal member PK, the recess 1415 is provided on the surface opposite to the surface 1440 (described later). The recess 1415 is provided on the rear surface of the sealing member PK. The shape of the concave portion 1415 corresponds to the shape of the convex portion 1414. The convex portion 1414 is fitted in the concave portion 1415.

The second member F2 abuts on the seal member PK to achieve valve sealing. The seal member PK (the first seal contact portion 1402) is compressed between the first member F1 and the second member F2 to seal between the two members.

The second member F2 has a second seal contact portion 1416 that abuts on the seal portion 1402. The second seal contact portion 1416 has a convex portion 1418. The convex portion 1418 is annular as a whole. The convex portion 1418 projects rearward. When the second seal contact portion 1416 comes into contact with the seal member PK, the convex portion 1418 bites into the seal member PK. The convex portion 1418 improves the sealing property.

The installation portion 1410 of the first member F1 has a storage portion 1420 in which at least a part of the base portion 1400 is housed. The storage portion 1420 is a recess toward the rear. A part of the base 1400 is housed in this recess. Further, the installation portion 1410 of the first member F1 has a foundation portion 1422 which is a portion other than the storage portion 1420. The storage section 1420 is located behind the foundation section 1422. The storage portion 1420 is located on the side opposite to the second member F2 with respect to the foundation portion 1422.

The base 1400 has a surface 1426 on the side of the seal 1402. The storage portion 1420 has a base holding surface 1428 that abuts on the surface 1426 of the base 1400. The base holding surface 1428 is parallel to a particular direction. The base holding surface 1428 is in contact with the outer peripheral surface of the storage portion 1420. The embodiment of FIG. 57 does not have the cover portion 1230 described above. The seal member PK has a surface 1440 that abuts on the second seal contact portion 1416. The surface 1440 is tilted with respect to a particular direction. The surface 1440 is inclined so as to be rearward toward the outside of the first member F1.

The convex portion 1418 is formed on the opening edge of the hollow portion 1450 (cylindrical hole) formed in the second member F2. Therefore, the convex portion 1418 tends to come into contact with the slope 1440. The convex portion 1418 easily bites into the slope 1440.

In the second member F2, a concave portion 1452 adjacent to the convex portion 1418 is formed. In the second member F2, the concave portion 1452 is provided on the radial outer side of the convex portion 1418. The presence of the recesses 1452 prevents portions other than the protrusions 1418 from coming into contact with the surface 1440. The recess 1452 ensures contact between the protrusion 1418 and the surface 1440.

In the embodiment of FIG. 57, the displacement and deformation of the seal member PK are suppressed by the installation portion 1410, the storage portion 1420, and the base holding surface 1428.

The embodiment of FIG. 57 does not have a cover portion as in the embodiment of FIG. 53. However, as described above, the surface 1440 that abuts on the second seal contact portion 1416 is inclined. Due to this inclination, the second seal contact portion 1416 that abuts on the surface 1440 is in a state of suppressing the seal member PK from the radial outside thereof. Therefore, the displacement and deformation of the seal member PK are further suppressed.

As described above, the convex portion 1414 and the concave portion 1415 are in mesh with each other. An uneven engagement is formed between the first member F1 and the seal member PK. This uneven engagement is formed on the surface of the seal member PK opposite to the surface 1440. Concavo-convex engagement is formed between the convex portion protruding along the specific direction and the convex portion formed along the specific direction. This uneven engagement suppresses the displacement and deformation of the seal member PK.

In each embodiment, the adjacent portion has an inner peripheral surface (hereinafter, also referred to as an adjacent inner peripheral surface) adjacent to the periphery of the switching valve V1. For example, in the first embodiment, the inner surface C1 of the cylinder and the inner surface C2 of the cylinder are provided. For example, the second embodiment, the third embodiment, and the fourth embodiment have an insertion space portion U1. Since these adjacent inner peripheral surfaces are coaxial with the switching valve V1, the attitude of the switching valve V1 is maintained while allowing the switching valve V1 to move in the axial direction, and the force can be easily transmitted from the operation unit. do. From the viewpoint of miniaturization of the water discharge portion, the diameter of the adjacent circumferential surface is preferably 15 mm or less, more preferably 12 mm or less, still more preferably 10 mm or less. Considering the support or flow rate of the switching valve V1, the diameter of the adjacent cylindrical surface is preferably 5 mm or more, more preferably 7 mm or more, still more preferably 8 mm or more.

In each embodiment, all coil springs (elastic bodies) are arranged coaxially with the switching valve V1. Therefore, there is no loss in the transmission of the elastic force to each shaft, smooth operation is possible, and it is not necessary to excessively increase the spring elasticity of the coil spring. In addition, since the structure is simplified, it leads to reduction of failures and cost reduction. In addition, miniaturization of the water discharge portion is achieved.

Resin is preferable as the material of the shaft body Z1, the shaft body Z2, and the shaft body Z12. Preferred resins include polyoxymethylene (POM), polyphenylene sulfide (PPS), acrylonitrile butadiene styrene copolymer (ABS) and polypropylene (PP). From the viewpoint of durability and heat resistance, polyoxymethylene (POM) and polyphenylene sulfide (PPS) are more preferable.

Examples of materials for sealing members such as O-rings include rubber and elastomer. Preferred rubbers include NBR, EPDM, fluororubber and silicone rubber. EPDM and fluororubber are more preferable from the viewpoint of cost and chlorine resistance, and from the viewpoint of low compression set, and EPDM is further preferable in consideration of cost.

As described above, in the present invention, a small and highly reliable faucet device is realized.

The present application also describes other inventions not included in the claimed invention (including the independent form claim). Each of the forms, members, configurations, etc. described in the claims and embodiments of the present application is recognized as an invention based on the action and effect of each.

Each of the embodiments, members, configurations, etc. shown in the above embodiments is the present application, including the invention according to the present invention, individually, even if all the embodiments, members, or configurations of these embodiments are not provided. It can be applied to all the described inventions.

The device described above can be used in faucets for all purposes.

100, 300, 500, 700 ... Faucet device 102, 302, 502, 702 ... Water guide part 104, 304, 504, 704 ... Water discharge part 110, 310, 510, 710 ... Water spout 120 , 320, 520, 720 ... Operation unit (button)
V1 ・ ・ ・ Switching valve Z1 ・ ・ ・ Shaft body of raw water valve part Z2 ・ ・ ・ Shaft body of water purification valve part Z12 ・ ・ ・ Shaft body integrated with raw water valve part and water purification valve part VG ・ ・ ・ Raw water Valve part VJ ・ ・ ・ Water purification valve part S1 ・ ・ ・ Raw water seal member S11 ・ ・ ・ First raw water seal member S12 ・ ・ ・ Second raw water seal member S2 ・ ・ ・ Water purification seal member K1 ・ ・ ・ For water purification valve Inclined surface M1 ... Inclined surface for raw water valve E1 ... Raw water pool space R1, R2, R3 ... Adjacent parts CS1, CS2 ... Coil spring (elastic body)
PS1 ・ ・ ・ Tip side pressure receiving surface PH1 ・ ・ ・ Main body side pressure receiving surface

Claims (13)

A water guide with a built-in water purification material and
A water discharge part located on the downstream side of the water guide part and having a discharge port,
A water purification flow path that penetrates the water purification material and reaches the discharge port,
The raw water flow path leading to the discharge port without penetrating the water purification material,
Have and
The water discharge unit includes a switching valve that switches whether the water discharged from the discharge port is raw water or purified water, an adjacent portion adjacent to the switching valve, and an operation unit that can move the switching valve along a specific direction. Have and
The switching valve has a raw water valve portion that can open and close the raw water flow path and a water purification valve portion that can open and close the purified water flow path.
Due to the movement of the switching valve in the specific direction, the raw water valve portion is in the closed state and the water purification valve portion is in the open state, and the raw water valve portion is in the open state and the water purification valve portion is in the open state. Mutual transition from the closed raw water discharge state is possible,
The raw water valve portion and the water purification valve portion are arranged along the same straight line extending in the specific direction, and are integrally moved along the specific direction by the operation of the operation unit.
The adjacent portion has a contact surface for a raw water valve.
The raw water valve portion has a raw water sealing member, and the raw water valve portion has a raw water sealing member.
The raw water valve portion is closed by the contact between the raw water valve contact surface and the raw water seal member.
In the purified water discharge state, a raw water pool space is formed between the raw water valve portion and the adjacent portion.
As the pressure receiving surface facing the raw water pool space, the switching valve has a tip side pressure receiving surface on which the force due to the water pressure of the raw water acts toward the tip of the faucet and a force due to the water pressure of the raw water acts toward the faucet main body. It has a pressure receiving surface on the main body side,
The raw water seal member is configured to be able to abut on the faucet main body side of the raw water valve contact surface.
A faucet device in which the area Ms of the pressure receiving surface on the tip side is larger than the area Mh of the pressure receiving surface on the main body side. The faucet device according to claim 1, wherein the contact surface for the raw water valve is an inclined surface for the raw water valve that is inclined with respect to the specific direction. A water guide with a built-in water purification material and
A water discharge part located on the downstream side of the water guide part and having a discharge port,
A water purification flow path that penetrates the water purification material and reaches the discharge port,
The raw water flow path leading to the discharge port without penetrating the water purification material,
Have and
The water discharge unit includes a switching valve that switches whether the water discharged from the discharge port is raw water or purified water, an adjacent portion adjacent to the switching valve, and an operation unit that can move the switching valve along a specific direction. Have and
The switching valve has a raw water valve portion that can open and close the raw water flow path and a water purification valve portion that can open and close the purified water flow path.
Due to the movement of the switching valve in the specific direction, the raw water valve portion is in the closed state and the water purification valve portion is in the open state, and the raw water valve portion is in the open state and the water purification valve portion is in the open state. Mutual transition from the closed raw water discharge state is possible,
The raw water valve portion and the water purification valve portion are arranged along the same straight line extending in the specific direction, and are integrally moved along the specific direction by the operation of the operation unit.
An inclined surface for a water purification valve that is inclined with respect to a specific direction, an insertion space portion provided on the faucet main body side of the inclined surface for a water purification valve, and a supporting elastic body arranged in the insertion space portion. I have more
The water purification valve portion has a water purification seal member and an insertion portion that can enter the insertion space portion.
A faucet device in which the insertion portion is urged toward the tip of the faucet by the supporting elastic body. The insertion space portion is a space formed inside the inner surface of the cylinder.
The faucet device according to claim 3, wherein the insertion portion has a guide portion that can slide with respect to the inner surface of the cylinder. A water guide with a built-in water purification material and
A water discharge part located on the downstream side of the water guide part and having a discharge port,
A water purification flow path that penetrates the water purification material and reaches the discharge port,
The raw water flow path leading to the discharge port without penetrating the water purification material,
Have and
The water discharge unit includes a switching valve that switches whether the water discharged from the discharge port is raw water or purified water, an adjacent portion adjacent to the switching valve, and an operation unit that can move the switching valve along a specific direction. Have and
The switching valve has a raw water valve portion that can open and close the raw water flow path and a water purification valve portion that can open and close the purified water flow path.
Due to the movement of the switching valve in the specific direction, the raw water valve portion is in the closed state and the water purification valve portion is in the open state, and the raw water valve portion is in the open state and the water purification valve portion is in the open state. Mutual transition from the closed raw water discharge state is possible,
The raw water valve portion and the water purification valve portion are arranged along the same straight line extending in the specific direction, and are integrally moved along the specific direction by the operation of the operation unit.
In the purified water discharge state, a raw water pool space is formed between the raw water valve portion and the adjacent portion.
As the pressure receiving surface facing the raw water pool space, the switching valve has a tip side pressure receiving surface on which the force due to the water pressure of the raw water acts on the faucet tip side and a force due to the water pressure on the raw water acts on the faucet main body side. It has a pressure receiving surface on the main body side,
A faucet device in which the area Ms of the pressure receiving surface on the tip side and the area Mh of the pressure receiving surface on the main body side are substantially the same. A water guide with a built-in water purification material and
A water discharge part located on the downstream side of the water guide part and having a discharge port,
A water purification flow path that penetrates the water purification material and reaches the discharge port,
The raw water flow path leading to the discharge port without penetrating the water purification material,
Have and
The water discharge unit includes a switching valve that switches whether the water discharged from the discharge port is raw water or purified water, an adjacent portion adjacent to the switching valve, and an operation unit that can move the switching valve along a specific direction. Have and
The switching valve has a raw water valve portion that can open and close the raw water flow path and a water purification valve portion that can open and close the purified water flow path.
Due to the movement of the switching valve in the specific direction, the raw water valve portion is in the closed state and the water purification valve portion is in the open state, and the raw water valve portion is in the open state and the water purification valve portion is in the open state. Mutual transition from the closed raw water discharge state is possible,
The raw water valve portion and the water purification valve portion are arranged along the same straight line extending in the specific direction, and are integrally moved along the specific direction by the operation of the operation unit.
When the member constituting at least a part of the switching valve or one of the adjacent portions is a first member, and the member constituting at least a part of the switching valve or the other adjacent portion is a second member.
A seal member as a raw water seal member or a purified water seal member is attached to the first member.
The sealing member has a base portion and a sealing portion integrally connected to the base portion.
The sealing portion is compressed between the first member and the second member to seal between the first member and the second member.
The first member has an installation portion in which at least a part of the base portion is installed, and a first seal contact portion that abuts on the seal portion.
The second member has a second seal contact portion that abuts on the seal portion.
With the operation of the operation unit, the relative position between the first member and the second member changes, and due to this change, the distance between the first seal contact portion and the second seal contact portion. Changed,
Due to the change in the distance, the flow path between the first member and the second member is closed, and the flow path between the first member and the second member is opened. The state and achieved,
The installation portion of the first member has a storage portion in which at least a part of the base portion is stored and a foundation portion which is a portion other than the storage portion, and the storage portion is in the foundation portion. On the other hand, it is located on the opposite side of the second member.
A faucet device in which the storage portion has a base holding surface that abuts on a surface of the base portion on the side of the seal portion. The faucet device according to claim 6, wherein the first member has a cover portion in the seal portion of the seal member that abuts on a surface opposite to the base portion. A water guide with a built-in water purification material and
A water discharge part located on the downstream side of the water guide part and having a discharge port,
A water purification flow path that penetrates the water purification material and reaches the discharge port,
The raw water flow path leading to the discharge port without penetrating the water purification material,
Have and
The water discharge unit includes a switching valve that switches whether the water discharged from the discharge port is raw water or purified water, an adjacent portion adjacent to the switching valve, and an operation unit that can move the switching valve along a specific direction. Have and
The switching valve has a raw water valve portion that can open and close the raw water flow path and a water purification valve portion that can open and close the purified water flow path.
Due to the movement of the switching valve in the specific direction, the raw water valve portion is in the closed state and the water purification valve portion is in the open state, and the raw water valve portion is in the open state and the water purification valve portion is in the open state. Mutual transition from the closed raw water discharge state is possible,
The raw water valve portion and the water purification valve portion are arranged along the same straight line extending in the specific direction, and are integrally moved along the specific direction by the operation of the operation unit.
The adjacent portion has a contact surface for a raw water valve.
The raw water valve portion has a raw water sealing member, and the raw water valve portion has a raw water sealing member.
The raw water valve portion is closed by the contact between the raw water valve contact surface and the raw water seal member.
A faucet device in which the contact surface for a raw water valve is an inclined surface for a raw water valve that is inclined with respect to the specific direction. A water guide with a built-in water purification material and
A water discharge part located on the downstream side of the water guide part and having a discharge port,
A water purification flow path that penetrates the water purification material and reaches the discharge port,
The raw water flow path leading to the discharge port without penetrating the water purification material,
Have and
The water discharge unit includes a switching valve that switches whether the water discharged from the discharge port is raw water or purified water, an adjacent portion adjacent to the switching valve, and an operation unit that can move the switching valve along a specific direction. Have and
The switching valve has a raw water valve portion that can open and close the raw water flow path and a water purification valve portion that can open and close the purified water flow path.
Due to the movement of the switching valve in the specific direction, the raw water valve portion is in the closed state and the water purification valve portion is in the open state, and the raw water valve portion is in the open state and the water purification valve portion is in the open state. Mutual transition from the closed raw water discharge state is possible,
The raw water valve portion and the water purification valve portion are arranged along the same straight line extending in the specific direction, and are integrally moved along the specific direction by the operation of the operation unit.
The switching valve further has a valve joint that connects the raw water valve portion and the water purification valve portion.
The valve joint has a slide portion and has a slide portion.
A faucet device in which the water purification valve portion has a front end portion that can slide and move in the specific direction in the slide portion. A water guide with a built-in water purification material and
A water discharge part located on the downstream side of the water guide part and having a discharge port,
A water purification flow path that penetrates the water purification material and reaches the discharge port,
The raw water flow path leading to the discharge port without penetrating the water purification material,
Have and
The water discharge unit includes a switching valve that switches whether the water discharged from the discharge port is raw water or purified water, an adjacent portion adjacent to the switching valve, and an operation unit that can move the switching valve along a specific direction. Have and
The switching valve has a raw water valve portion that can open and close the raw water flow path and a water purification valve portion that can open and close the purified water flow path.
Due to the movement of the switching valve in the specific direction, the raw water valve portion is in the closed state and the water purification valve portion is in the open state, and the raw water valve portion is in the open state and the water purification valve portion is in the open state. Mutual transition from the closed raw water discharge state is possible,
The raw water valve portion and the water purification valve portion are arranged along the same straight line extending in the specific direction.
The raw water valve portion has a raw water sealing member, and the raw water valve portion has a raw water sealing member.
The water purification valve portion has a water purification seal member, and the water purification valve portion has a water purification seal member.
The raw water valve portion is closed when the raw water seal member that moves in the specific direction together with the operating portion abuts on the valve seat of the raw water valve portion formed in the adjacent portion.
The water purification valve portion is a faucet device that is closed when the water purification seal member that moves in the specific direction together with the operation portion abuts on the valve seat of the water purification valve portion formed in the adjacent portion. The raw water valve portion has a shaft body and the raw water seal member attached to the shaft body.
The water purification valve portion has a shaft body and the water purification seal member attached to the shaft body.
The faucet device according to claim 10, wherein the shaft body of the raw water valve portion and the shaft body of the water purification valve portion are directly or indirectly connected to each other. The faucet device according to claim 11 , wherein the shaft body of the raw water valve portion and the shaft body of the water purification valve portion are arranged along the straight line. The adjacent portion has an insertion cavity portion through which the raw water valve portion can be inserted.
The faucet device according to any one of claims 1 to 12, wherein the raw water valve portion has an insertion guide portion that is inserted into the insertion cavity portion and guided to move in the specific direction.

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