JP6629087B2 - Water faucet - Google Patents

Description

  The present invention relates to a faucet, and more particularly, to a structure for attaching and detaching a spout head in a faucet.

  A faucet that discharges water from a faucet at the tip of a tubular portion extending from a faucet body is known. On the other hand, at the time of purchase, there is a case where a faucet having no water purification function is selected, and it is desired to add a water purification function later. For example, Patent Literature 1 describes a faucet direct-connection type water purifier attached to a faucet of a faucet having no water purification function.

JP-A-11-290839

  By the way, the water purifier described in Patent Document 1 is a so-called retrofit type water purifier, in which a fastening cap for attaching an upper portion of the water purifier main body to the tip of the faucet is externally fitted, and an upper portion of the water purifier main body is provided. It is configured to be attached by being screwed into.

  However, if a retrofit water purifier is attached to the tip of the faucet, as in the case of the water purifier described in Patent Literature 1, the appearance becomes uncomfortable, which is not preferable in terms of design. Also, when the water purifier is attached in this manner, the water purifier projects below the faucet faucet, so that the space between the water discharge port of the water purifier and the sink is narrowed, and the usability may be reduced accordingly.

In order to alleviate the discomfort in appearance, it is conceivable to replace the entire faucet with a faucet containing a water purification cartridge. However, in order to replace the faucet as a whole, it is necessary to use a special technique for replacing the faucet, a special tool for the replacement, and the like. There is a problem that costs money.
As described above, the conventional faucet has room for improvement from the viewpoint of facilitating the operation of replacing a faucet having no water purification function with a faucet having a water purification function, and suppressing the replacement cost.

  The object of the present invention has been made in view of such problems, and facilitates the work of replacing a faucet without a water purification function with a faucet with a water purification function, and reduces the replacement cost. It is to provide a possible faucet technology.

  In order to solve the above-described problems, a faucet according to an aspect of the present invention includes a faucet main body to which a water discharge head is detachably mounted on a side surface. The faucet main body is configured to be replaceable from a water discharge head having no water purification function to another water discharge head having a water purification function.

  According to this aspect, since the water discharge head having no water purification function can be replaced with another water discharge head having a built-in water purification cartridge, the replacement operation is facilitated and the replacement cost can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, while facilitating the operation | work which replaces the faucet which does not have a water purification function with the faucet with a water purification function, the technique of the faucet which can hold down the replacement cost can be provided. .

It is a side view of the faucet which concerns on embodiment. It is a disassembled perspective view of the faucet which concerns on embodiment. It is an exploded perspective view of the spout head of the faucet according to the embodiment. It is a side view of the periphery of the protrusion pipe part of the faucet which concerns on embodiment. It is explanatory drawing explaining the periphery of the urging | biasing mechanism of the faucet which concerns on embodiment. It is explanatory drawing explaining the elastic body of the faucet which concerns on embodiment. It is explanatory drawing explaining the sliding member of the faucet which concerns on embodiment. It is explanatory drawing explaining the fastener of the faucet which concerns on embodiment. It is sectional drawing of the water discharge head of the faucet which concerns on embodiment. It is sectional drawing of another water discharge head which has a water purification function. FIG. 11 is a cross-sectional view of the faucet in a state where another water discharge head of FIG. 10 is mounted. It is a front view of the faucet which concerns on embodiment. It is a mimetic diagram showing operation of the check valve of the faucet concerning an embodiment. It is a side view of the faucet which concerns on 2nd Embodiment. It is a fragmentary sectional view which met an AA line of a faucet concerning a 2nd embodiment. It is a perspective view of the buffer member of the faucet which concerns on 2nd Embodiment. It is a schematic diagram of the buffer member of the faucet which concerns on 2nd Embodiment.

(Embodiment)
Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. The same or equivalent components and members shown in each drawing are denoted by the same reference numerals, and repeated description will be omitted as appropriate. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. In each drawing, some members that are not important for describing the embodiments are omitted.

  FIG. 1 is a side view of a faucet 100 according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the faucet 100. The faucet 100 includes a faucet body 112 and a water discharge head 106 that is detachably attached to a side surface of the faucet body 112. The water faucet 100 is configured so that even a general user can replace the water discharge head 106 having no water purification function with another water discharge head 148 containing a water purification cartridge 158 (see also FIG. 10). Another water discharge head 148 will be described later.

  Hereinafter, a description will be given based on the XYZ orthogonal coordinate system. The direction X corresponds to a horizontal left-right direction, the direction Y corresponds to a horizontal front-back direction, and the direction Z corresponds to a vertical up-down direction. The directions Y and Z are each orthogonal to the direction X at right angles. The direction X may be described as a left or right direction, the direction Y may be described as a forward or rearward direction, and the direction Z may be described as an upward direction or a downward direction. In FIG. 1, the right side is referred to as right and the left side is referred to as left when the faucet 100 is viewed from the direction of arrow P. Note that such notation of the direction does not limit the usage posture of the faucet according to the embodiment of the present invention.

  As shown in FIG. 2, the faucet 100 includes a faucet main body 112 having a projecting tube portion 20 protruding from the side surface of the main body, and a water discharge head 106 detachably attached to the faucet main body 112. The projecting pipe section 20 includes a joint pipe 118 and a cylindrical member 172 that is inserted into the joint pipe 118 and partially exposed in the axial direction to be exposed. The water discharge head 106 accommodates the projecting pipe section 20. It has a housing 10. An urging mechanism 60 that urges the water discharge head 106 toward the water faucet main body 112 is provided between the water faucet main body 112 and the water discharge head 106. The biasing mechanism 60 will be described later.

(Faucet body)
The faucet main body 112 includes a protruding tube portion 20, a connection joint 82, a water discharge handle 102, a rotating portion 104, a strut portion 108, and a strut cap 114. The faucet main body 112 is erected in a column shape from the fixed surface. The protruding tube portion 20 protrudes radially, preferably obliquely upward, from the rotating portion 104 that is the side surface of the main body. Hereinafter, a direction along the central axis M of the protruding tube portion 20 is referred to as an axial direction, and a direction orthogonal to the central axis M is referred to as a radial direction.

  The strut 108 is fixed to a kitchen or the like, and incorporates a part of the downstream side of a water pipe 110 for introducing tap water into the faucet main body 112. The cylindrical rotating part 104 is installed so as to cover the support part 108. The rotating portion 104 has a function as a housing that covers the connection joint 82, the valve, the support portion, and the like. The rotating unit 104 rotates in a horizontal direction about the support 108. The rotating portion 104 is resin-plated, and has an outer surface provided with a plated surface having metallic luster. The column cap 114 is provided above the rotating unit 104 and is connected to the column 108. The rotating portion 104 is positioned by the column cap 114 so as not to be pulled up and down. When the user moves the water discharging handle 102 on the column cap 114 in the vertical direction, the water discharging handle 102 moves the operation protrusion 116 back and forth, whereby a valve (not shown) built into the column 108 and connected to the water pipe 110. Is opened and closed.

(Protruding tube)
As shown in FIG. 2, the protruding pipe portion 20 includes a joint pipe 118 and a tubular member 172. The joint pipe 118 is a tubular part that projects continuously from the rotating part 104. The tubular member 172 is inserted into the inside of the joint pipe 118, and is connected to the connection joint 82 via the water outlet 124. The connection joint 82 is connected to the water pipe via a valve. The water discharge head 106 is detachably attached to the rotating part 104 in a state where the projecting pipe part 20 is housed. As shown in FIG. 1, an end of the water discharge head 106 faces a side surface (outer peripheral surface) of the rotating unit 104. That is, at the base of the joint pipe 118 where the joint pipe 118 branches from the rotating section 104, the water discharge head 106 and the rotating section 104 (the faucet main body 112) face each other.

  The water discharge head 106 includes a housing 10 that houses the projecting tube 20. The water discharge head 106 accommodates up to the root of the joint pipe 118 when mounted. It is desirable that the water discharge head 106 be in contact with the outer surface of the rotating unit 104, but at least it is close to the outer surface of the rotating unit 104 so that the connection between the rotating unit 104 and the water discharge head 106 is inconspicuous.

  An insertion port 122 extending in the circumferential direction is provided at a lower portion of the water discharge head 106. After inserting the protruding tube part 20 into the accommodation part 10 of the water discharge head 106, the user inserts the fastener 120 through the insertion port 122. The fastener 120 has a clip shape and is made of, for example, a resin having predetermined strength and elasticity. When the water discharge head 106 is mounted on the faucet main body 112, the projecting pipe 20 is housed in the housing 10 of the water discharge head 106, and the water discharge head 106 is pushed toward the rotating unit 104. Next, the fastener 120 is pushed in from the insertion port 122 by hand. When the fastener 120 grips (clamps) the joint pipe 118 like a clip, the water discharge head 106 is fixed to the rotating unit 104. If the fastener 120 is removed, the water discharge head 106 can be removed from the faucet main body 112 by pulling the water discharge head 106 in the axial direction.

  Note that “detachable” in the present embodiment does not include a structure in which the water discharge head 106 and the faucet main body 112 are completely fixed by bonding, welding, or the like. It is preferable that the structure is such that a general user can attach and detach it at home, and does not require a dedicated tool for attachment and detachment such as a screwdriver. Therefore, in the faucet 100 of the present embodiment, the water discharge head 106 and the faucet main body 112 are fixed by the fastener 120. The fastener 120 can be inserted and removed with a finger or a nail without using a tool. Note that the fastener 120 may be detached by hooking an arbitrary metal rod or the like. The use of the fastener 120 is not essential.

  The rotation unit 104 may be rotated by operating the water discharge head 106 by applying a rotation force. At this time, stress due to rotation concentrates on the root portion of the joint pipe 118. For this reason, it is desirable to improve the connection strength between the joint pipe 118 and the rotating part 104. Therefore, in the faucet 100 of the present embodiment, the outer diameter enlarged portion 174 having an outer diameter larger than the outer diameter of the central portion of the joint pipe 118 is provided at the base of the joint pipe 118. The outer diameter enlarged portion 174 has, for example, a tapered shape.

  The water discharge head 106 is mounted by being pushed toward the rotating part 104 so as to accommodate all or a part of the outer diameter enlarged part 174. The water discharge head 106 may have its end abutted on the outer surface of the rotating part 104 to completely accommodate the outer diameter enlarged part 174.

  From the viewpoint of securing a work space for the user, it is preferable that the water discharge space, which is a space between the water discharge head 106 and the sink, be large. Therefore, in the faucet 100 of the embodiment, as shown in FIG. 1, the angle θ formed by the upper surface of the water discharge head 106 and the side surface extending upward from the water discharge head 106 of the faucet main body 112 is an acute angle. With this configuration, the downstream side of the water discharge head 106 is located at an upper position as compared with the case where the angle θ is an obtuse angle, so that the distance from the sink becomes longer and the water discharge space can be widened.

(Water spouting head)
FIG. 3 is an exploded perspective view of the water discharge head 106. The water discharge head 106 includes an outer shell 126, an inner pipe 128, a water discharge port member 130, and a rectifying member 132.

(Inner tube)
The inner tube 128 is a tubular member extending substantially in the axial direction, and the housing portion 10 is provided at an end on the upstream side. The accommodating portion 10 accommodates the protruding tube portion 20 including the tubular member 172 and the joint tube 118. The inner pipe 128 has a water passage part 184 which is a water passage inside, and tap water is supplied from the water pipe 110 via the cylindrical member 172 and the water passage part 184 of the inner pipe 128 to the water outlet member. The water reaches the sink 130 and is discharged to a sink (not shown) through the flow regulating member 132.

  The outer shell 126 is a casing of the water discharge head 106 and is a tubular member that covers the outside of the inner tube 128. That is, the water discharge head 106 has a double structure of the inner tube 128 and the outer shell 126. The water discharge head 106 has a double structure, thereby improving the overall strength of the water discharge head 106. The rotating part 104 is rotatably supported with the support part 108 as a rotation axis. The water discharge head 106 is connected to the protruding tube portion 20 branched from the rotating portion 104. The rotation of the rotation unit 104 causes the water discharge head 106 to rotate together with the rotation unit 104. The connection joint 82 and the cylindrical member also rotate integrally with the water discharge head 106.

  Since the water discharge head 106 is provided on the extension of the protruding pipe part 20, by rotating the water discharge head 106 in the horizontal direction, the rotational force is transmitted to the joint pipe 118 of the protruded pipe part 20 as it is. Therefore, the rotation operation by the user can be transmitted as the rotation force of the rotation unit 104. Since the projecting pipe portion 20 is housed in the water discharge head 106, the appearance does not constitute when the water discharge head 106 is mounted.

  The inner tube 128 may extend from the water outlet member 130 to an end of the outer shell 126 facing the rotating portion 104 so as to cover substantially the entire area of the outer shell 126. In particular, the end of the inner tube 128 and the end of the outer shell 126 substantially coincide. When the inner tube 128 is attached to the faucet main body 112, it is pushed in so as to accommodate all or a part of the outer diameter enlarged portion 174. The inner tube 128 may have a shape in which a part of the inner tube 128 protrudes from the end of the outer shell 126.

  Since the outer shell 126 constitutes the appearance, aesthetics are emphasized. Since the inner tube 128 is covered by the outer shell 126, there is little opportunity to configure the appearance, and the aesthetics are less important. Since the inner pipe 128 is a water passage and is directly connected to the joint pipe 118, high processing accuracy is particularly required for its internal structure.

  The outer shell 126 and the inner tube 128 can be formed from a resin material such as ABS resin or polyacetal by a molding process. In this case, the outer shell 126 and the inner tube 128 are advantageous in reducing the weight and cost. By reducing the weight of the outer shell 126, the replacement water discharge head 106 can be easily carried. The outer shell 126 is subjected to resin plating, and a plating surface having a metallic luster is provided on the outer surface.

  In the step of plating a resin component, the resin component is immersed in a high-temperature plating solution, so that the resin component may be deformed by high-temperature stress and processing accuracy may be reduced. Therefore, in the water discharge head 106 in the embodiment, the inner tube 128 has a double structure that is covered with the outer shell 126, so that the outer shell 126, where aesthetics are important, is formed with a plated surface, and processing accuracy is important. The tube 128 has no plating surface. In particular, the entire surface of the inner tube 128 including the first housing portion 186 and the second housing portion 188 is formed of a non-plated surface.

  The outer surface of the rotating unit 104 has a cylindrical curved surface. The end surface of the outer shell 126 and the end surface of the inner tube 128 have a shape that matches the curved shape of the outer surface of the rotating part 104. In particular, the end surface of the outer shell 126 and the end surface of the inner tube 128 have a shape that matches the tapered surface of the outer diameter enlarged portion 174. With this configuration, the water discharge head 106 and the rotating unit 104 can be connected without any gap.

(Removable mechanism)
Next, the attachment / detachment mechanism of the faucet 100 will be described. In the present embodiment, the water discharge head 106 is connected to the faucet main body 112 by housing the protruding tube portion 20 protruding from the rotating portion 104 in the housing portion 10 of the water discharge head 106. The accommodation unit 10 includes a first accommodation unit 186 and a second accommodation unit 188 described below. A boundary portion that is a connection portion between the water discharge head 106 and the rotating portion 104 is formed at the base of the joint pipe 118 of the protruding pipe section 20. In the faucet 100, the water discharge head 106 covers the joint pipe 118 and the cylindrical member 172 of the protruding pipe section 20 protruding from the side surface of the main body. Therefore, the outer diameter of the outer shell 126 of the water discharge head 106 can be designed relatively freely. Further, if the water discharge head is connected in the middle of the protruding pipe portion, a step occurs in the connection portion when replacing the water discharge head with another water discharge head having a different outer diameter. In addition, since there is a deviation due to manufacturing variations in the outer diameter of the water discharge head and the outer diameter of the protruding tube portion, a step may be generated in these connection portions due to a difference in outer diameter. A state having such a level difference is not good in appearance. Therefore, in the faucet 100 of the embodiment, the water discharge head 106 is attached to the faucet main body 112 in a state in which the protruding tube 20 is housed up to the base of the protruding tube 20. With this configuration, since the water discharge head 106 is connected at the base of the protruding tube portion 20, a step difference due to an outer diameter difference or a manufacturing error of the outer diameter can be eliminated. Further, since there is no need to consider the difference in the outer diameter of the connection portion, the outer diameter of the outer shell 126 can be designed relatively freely.

  As shown in FIG. 1, in a configuration in which the water discharge head 106 accommodates the protruding tube portion 20 protruding from the outer surface of the rotating portion 104 up to the root portion, since the surface of the rotating portion 104 becomes a boundary portion, the boundary surface becomes The connection portion is less noticeable than in the case where the portion 20 is located halfway in the axial direction. As shown in FIG. 1, the water discharge head 106 is directly connected to the rotating part 104 while the inner pipe 128 accommodates the protruding pipe part 20. The outer shell 126 covers the connecting portion of the inner tube 128 and does not directly participate in the connecting portion. For this reason, since the outer shell 126 is less likely to receive stress due to connection, the degree of freedom in designing the shape and material of the outer shell 126 can be increased.

  FIG. 4 is a side view of the periphery of the protruding tube 20 of the faucet 100. FIG. 4 shows a state where the O-ring 152 is not mounted. As shown in FIG. 4, the protruding tube portion 20 includes a joint tube 118 and a tubular member 172. The tubular member 172 has an outer diameter smaller than the distal end of the joint pipe 118 and is inserted inside the joint pipe 118. One end 172a on the upper side (downstream side) of the cylindrical member 172 protrudes from the joint pipe 118 in the axial direction, and is exposed from the joint pipe 118. The lower end (upstream side) other end 172b of the cylindrical member 172 is inserted into the water outlet 124 in the rotating part 104 and connected to the connection joint 82 (see also FIG. 1). An outer diameter enlarged portion 174 is formed at a portion of the joint pipe 118 connected to the rotating portion 104. The outer diameter expanding portion 174 has a tapered shape in which the outer diameter increases as approaching the rotating portion 104. The joint pipe 118 is formed integrally with the rotating part 104 from a resin material by molding. When removing the joint pipe 118 and the rotating part 104 from the mold, a portion corresponding to the joint pipe 118 may be extruded. In this case, damage to the rotating portion 104 exposed to the outside can be reduced.

(Engagement groove)
As shown in FIG. 4, in the faucet 100, an engagement groove 190 is provided in a cylindrical portion of the joint pipe 118. The engagement groove 190 is engaged with an engagement protrusion (not shown), which is a projection provided on the outer surface of the tubular member 172 and protruding in the radial direction. The cylindrical member 172 is connected to the joint pipe 118 by engaging the engagement protrusion with the engagement groove 190.

  As shown in FIG. 2, the end face of the outer shell 126 and the end face of the inner tube 128 face the outer diameter enlarged portion 174. The outer shell 126 and the inner tube 128 are provided with a water discharge head end face 180 which is a tapered end face (see also FIG. 9). The tapered surface of the water discharge head end surface 180 faces the tapered surface of the outer surface of the outer diameter enlarged portion 174 at an angle substantially in parallel. By making the tapered surface of the water discharge head end surface 180 the same curved shape as the tapered surface of the outer diameter enlarged portion 174, the gap at the boundary can be made less noticeable. The water discharging head 106 may face the rotating unit 104 in a state where at least a part of the water discharging head end face 180 is in contact with the rotating unit 104 or in a non-contact state. Here, the “same curved surface shape” refers to the shape of the water discharge head end face 180 such that a large gap, for example, a gap of 1.0 mm or more is not formed between the water discharge head 106 and the outer diameter enlarged portion 174. To approximate the curved shape of the outer diameter enlarged portion 174.

(Container)
As shown in FIG. 1, a water passage part 184, a first storage part 186, and a second storage part 188 are provided on the inner side surface of the inner pipe 128. The water passage part 184 is a water passage provided on the downstream side of the first storage part 186. The first storage section 186 is provided on the downstream side of the second storage section 188, and mainly stores the tubular member 172. The second storage section 188 is provided on the upstream side of the first storage section 186 and mainly stores the joint pipe 118. The upstream end face 188 a of the second storage section 188 constitutes the water discharge head end face 180. The first storage section 186 has an inner diameter larger than the water passage section 184, and the second storage section 188 has an inner diameter larger than the first storage section 186. Since the storage unit 10 has a two-stage structure of the first storage unit 186 having a small diameter and the second storage unit 188 having a large diameter, a seal is formed between the first storage unit 186 and the cylindrical member 172 to prevent water leakage. It is possible to suppress the play in the radial direction between the second housing portion 188 and the joint pipe 118.

  As shown in FIG. 1, the cylindrical member 172 has an outer diameter smaller than that of the joint pipe 118, and an O-ring 152 is attached to an outer peripheral surface thereof. The O-ring 152 is formed from a material such as rubber having elasticity. The O-ring 152 serves as a seal between the tubular member 172 and the first housing portion 186 to suppress leakage of water.

(Biasing mechanism)
Next, the urging mechanism 60 will be described. FIG. 5 is an explanatory view showing the periphery of the urging mechanism 60. The urging mechanism 60 is provided between the faucet main body 112 and the water discharge head 106. The urging mechanism 60 is configured to urge the water discharge head 106 toward the faucet main body 112 while the water discharge head 106 is mounted on the faucet main body 112. The urging mechanism 60 is incorporated into the urging mechanism mounting portion 70 of the joint pipe 118 (see also FIG. 4). As shown in FIG. 5, the urging mechanism 60 includes an elastic body 66, a sliding member 64, a fastener 120, and a first insertion port 122a. The elastic body 66, the sliding member 64, and the fastener 120 are mounted on the urging mechanism mounting section 70.

(Biasing mechanism mounting part)
The urging mechanism mounting section 70 will be described. As shown in FIG. 4, the faucet 100 is provided with an urging mechanism mounting part 70 that is a part for incorporating the urging mechanism 60 into the joint pipe 118. The biasing mechanism mounting portion 70 has a substantially cylindrical small-diameter portion 77 recessed in the radial direction from the outer peripheral portion 118e. The small diameter portion 77 is a portion formed to have a smaller diameter than the outer peripheral portion 118e. The small diameter portion 77 is provided with an elastic member mounting portion 71, a sliding member mounting portion 72, and a fastener mounting portion 73 from the downstream side. An annular elastic body 66 is fitted into the elastic member mounting portion 71. The sliding member 64 is fitted into the sliding member mounting portion 72. The fastener 120 is mounted on the fastener mounting portion 73.

  Each of the elastic member mounting portion 71, the sliding member mounting portion 72, and the fastener mounting portion 73 has a cylindrical surface. The cylindrical surfaces of the elastic member mounting portion 71 and the sliding member mounting portion 72 are formed to have substantially the same diameter, and are uniformly connected to these boundaries without forming a step. The cylindrical surface of the fastener mounting portion 73 has a larger diameter than the cylindrical surface of the sliding member mounting portion 72, and a step 78 is provided at the boundary between these. The step 78 limits the range of movement of the sliding member 64 in the axial direction.

  On a part of the circumference of the small-diameter portion 77, a restricting convex portion 74, which is a portion protruding in the radial direction, extends in the axial direction from the fastener attaching portion 73 to the sliding member attaching portion 72. The restriction protrusion 74 is located above the small diameter portion 77 as shown in FIG. The urging mechanism 60 has an upstream wall 75 on the upstream side of the small diameter portion 77 and a downstream wall 76 on the downstream side of the small diameter portion 77. The upstream wall portion 75 and the downstream wall portion 76 extend radially from the upstream end and the downstream end of the small diameter portion 77 toward the outer peripheral portion 118e. The end face of the fastener 120 abuts on the upstream wall 75, and the elastic body 66 abuts on the downstream wall 76.

(Elastic body)
Next, the elastic body 66 will be described. FIG. 6 is an explanatory view of the elastic body 66. FIG. 6A shows a side view, and FIG. 6B shows a front view. FIG. 6A shows a part in cross section. The elastic body 66 may be, for example, an O-ring that is an annular rubber member. The elastic body 66 is fitted into the elastic member mounting portion 71 of the small diameter portion 77. The downstream end surface of the elastic body 66 contacts the downstream wall portion 76.

  Next, the function of the elastic body 66 will be described. As the urging mechanism, it is desirable that the urging force can be generated by a simple mechanism. Therefore, in the faucet 100, the biasing mechanism 60 includes the elastic body 66 interposed between the faucet main body 112 and the water discharge head 106. By including the elastic body 66, the elastic body 66 itself generates an urging force, so that the mechanism is simplified and the number of parts can be reduced.

  It is desirable that the elastic body has a small shape that can be accommodated between the faucet main body 112 and the water discharge head 106. Therefore, in the faucet 100, the elastic body 66 is compressed with the water discharge head 106 attached to the faucet main body 112. In this case, since the elastic body 66 is mounted in a state of being compressed in the thickness direction, the accommodation space can be reduced. The compressed elastic body 66 outputs a thrust J (see also FIG. 5) directed toward the faucet main body 112 due to a repulsive force in the thickness direction. It is not essential that the elastic body is mounted in a compressed state.

(Sliding member)
Next, the sliding member 64 will be described. 7A and 7B are explanatory views of the sliding member 64. FIG. 7A shows a side view, and FIG. 7B shows a front view. The sliding member 64 has, for example, a hollow disk shape, and has a substantially C-shaped shape with a part cut away. The sliding member 64 is provided with a first surface 64a on the downstream side, a second surface 64b on the upstream side, an inclined surface 64c, and a notch 64d. The second surface 64b has a smaller diameter than the first surface 64a. The inclined surface 64c has such an inclination that the outer surface of the second surface 64b is closer to the first surface 64a from the outer periphery. The notch 64d is provided on the upper part of the sliding member 64 so as to sandwich the restricting protrusion 74 via a gap. By sandwiching the limiting projection 74, the sliding member 64 is easily formed to slide in the axial direction with the limiting projection 74 as a guide. The sliding member 64 may be formed by molding from a resin material having good slidability, such as polyacetal.

  Next, the function of the sliding member 64 will be described. In a case where the sliding member 64 is not provided, in order to make the elastic body 66 compressed in a state where the fastener 120 is mounted, the upstream side of the elastic body 66 is fixed with the elastic body 66 in an uncompressed state. The area 73 is projected. In this case, the area of the fastener attaching portion 73 becomes narrow, and the fastener 120 is rubbed directly with the elastic body 66 when the fastener 120 is inserted. Further, the elastic body 66 may be deformed or damaged due to friction when the fastener 120 is inserted. In particular, when the elastic body 66 is made of rubber, the frictional resistance when the fastener 120 is inserted is large. Therefore, in the faucet 100, the urging mechanism 60 includes the sliding member 64 interposed between the fastener 120 and the elastic body 66. The sliding member 64 has an upstream end surface in contact with the fastener 120 and a downstream end surface in contact with the elastic member 66. By forming the sliding member 64 from a material having good slidability, the frictional resistance when the fastener 120 is inserted can be reduced. Further, since the elastic body 66 and the fastener 120 are not in direct contact with each other, deformation and damage of the elastic body 66 when the fastener 120 is inserted can be suppressed. In a state where the fastener 120 is not mounted, the second surface 64b and the inclined surface 64c on the upstream side of the sliding member 64 slightly protrude into the area of the fastener mounting portion 73, and the downstream wall of the first insertion port 122a. It protrudes upstream from 122ab. When the fastener 120 is inserted, the inclined surface 64c serves as a guide, the fastener 120 is inserted along the inclined surface 64c to the back side, and the fastener 120 pushes the sliding member 64 to the downstream side so that the elastic body 66 is formed. Is compressed. Further, the axial movement range of the sliding member 64 is limited by the step portion 78 at the boundary between the fastener attaching portion 73 and the sliding member attaching portion 72. The protrusion amount of the portion 73 in the region is appropriately maintained, and the fastener 120 can be easily inserted.

(Fastener)
Next, the fastener 120 will be described. 8A and 8B are explanatory views of the fastener 120. FIG. 8A shows a front view, FIG. 8B shows a side view, and FIG. 8C shows a bottom view. As an example, the fastener 120 includes a pair of legs 120b extending upward from both ends of a base 120a extending in the left-right direction, and has a so-called clip shape. The fastener 120 has a base 120a and a pair of legs 120b integrally formed of a resin material. At the lower part of the base 120a, there is provided a hook 120f for pinching with a fingernail or a tool. The hook 120f has a shape that is recessed in the thickness direction, so that a gap enough to allow a claw or a tool to be inserted between the hook 120f and the insertion port 122 with the fastener 120 attached to the insertion port 122. Form. A recess 120e is formed inside the base of the leg 120b of the base 120a to improve the flexibility of the leg 120b.

(Inlet)
The insertion port 122 includes a first insertion port 122a formed in the outer shell 126 and a second insertion port 122b formed in the inner tube 128, as shown in FIG. The first insertion port 122a and the second insertion port 122b are connected in the radial direction. The first insertion port 122a and the second insertion port 122b are substantially rectangular or oval openings that are horizontally long when viewed from below. The fastener 120 penetrates the first insertion port 122a and the second insertion port 122b in the radial direction to grip the joint pipe 118. The urging force H is input to the first insertion port 122a via the fastener 120. At this time, it is desirable to minimize the gap between the outer shell 126 and the faucet main body 112 in appearance. Therefore, in the faucet 100, the second insertion port 122b of the inner tube 128 is formed to be wider in the axial direction than the first insertion port 122a of the outer shell 126. With such a configuration, a gap is formed between the second insertion port 122b and the fastener 120, and the biasing force H can be preferentially applied to the first insertion port 122a of the outer shell 126. As a result, the gap between the outer shell 126 and the faucet main body 112 can be made as small as possible. It is preferable that the first insertion port 122a and the fastener 120 are formed such that the widths in the axial direction substantially coincide with each other.

  Next, the operation of the urging mechanism 60 will be described. As shown in FIG. 5, the elastic body 66 outputs a thrust J to the fastener 120 via the sliding member 64 in a state where the elastic body 66 is fitted into the elastic member mounting portion 71. The fastener 120 having received the thrust J outputs an urging force H to the wall 122aa on the upstream side of the first insertion port 122a of the outer shell 126. As a result, the water discharge head 106 is urged toward the faucet main body 112 in the axial direction.

  Since the gap between the water discharge head end face 180 and the rotating portion 104 of the faucet main body 112 includes a manufacturing error, if there is no gap in all areas of the water discharge head end face 180, the manufacturing yield may be reduced. There is. In particular, since the shape of the water discharge head end surface 180 that matches the outer peripheral surface of the faucet main body 112 becomes complicated, it is difficult to completely match the shape. Therefore, in the faucet 100, the upper portion 180 a of the water discharge head end face 180, which is the opposite portion of the water discharge head 106 that faces the rotating portion 104 of the faucet main body 112, is provided so as to be closer to the rotating portion 104 than the lower portion 180 b. (See also FIG. 9). Since the gap at the upper part 180a of the water discharge head end face 180 is more noticeable to the user than the gap at the lower part 180b, the upper part 180a of the water discharge head end face 180 can be set to be closer to the rotating unit 104 in preference to the lower part 180b. For example, the upper portion 180a of the water discharge head end face 180 is set to protrude from the lower portion 180b toward the rotating portion 104, and the water discharge head 106 is urged by the urging mechanism 60 toward the faucet main body portion 112, whereby the upper portion 180a Can be closer to the rotating part 104 than the lower part 180b. Since the gap in the upper portion 180a that is easily recognized by the user can be reduced, the deterioration of the aesthetic appearance due to the gap is reduced. The upper part 180 a of the water discharge head end face 180 may abut on the faucet main body 112.

  Next, the structure of the faucet 100 will be described. FIG. 9 is a sectional view of the water discharge head 106 of the water faucet 100 according to the embodiment, which is the water discharge head 106 connected to the water faucet main body 112 of FIG. Hereinafter, the faucet in which the faucet body 106 having no water purification function is attached to the faucet body 112 may be referred to as a faucet 100a. As shown in FIG. 9, the inner pipe 128 of the water discharge head 106 is connected to the water discharge port member 130. Water between the inner pipe 128 and the water outlet member 130 is stopped by the O-ring 154. The outlet of the water outlet member 130 is capped by the rectifying member 132. The rectifying member 132 rectifies the flowing water from the inner pipe 128 and changes it into foamed water.

  As shown in FIG. 1, the tubular member 172 is inserted into the joint pipe 118, and the lower end (upstream side) other end 172 b of the tubular member 172 is connected to the water outlet 124. Water is stopped by the O-ring 155 between the other end 172b of the tubular member 172 and the water outlet 124.

  The water discharge head 106 is fixed to the joint pipe 118 by the fastener 120 gripping the joint pipe 118 in a state where the joint pipe 118 is inserted into the inner pipe 128. In particular, the fastener 120 is inserted from the first insertion port 122 a of the outer shell 126, and grips the joint pipe 118 through the second insertion port 122 b of the inner pipe 128.

(Another spouting head)
Next, another water discharge head 148 including the water purification cartridge 158 will be described. FIG. 10 is a sectional view of another water discharge head 148 having a water purification function. Another water discharge head 148 includes an inner tube 170, an outer shell 164, a water discharge member 160, a water purification handle 162, an O-ring 166, a valve 168, a cartridge holding portion 156, and a water purification cartridge 158. In particular, another water discharge head 148 includes an inner pipe 170 for receiving water from the faucet main body 112, and the inner pipe 170 is provided with a cartridge holding section 156 for holding the water purification cartridge 158. The outer circumference of the inner tube 170 is covered by an outer shell 164. Another water discharge head 148 has a double structure of the inner tube 170 and the outer shell 164. The joint pipe 118 is inserted into the inner pipe 170. The water discharging member 160 is attached to a downstream end of the inner pipe 170. The water purification handle 162 is an operation member for switching between raw water and purified water, and is provided on a side surface of the outer shell 164 that is closer to the downstream side.

  The cartridge holding section 156 is fitted as a part of the inner tube 170 and is provided as a part of the inner tube 170. The O-ring 166 is inserted between the inner tube 170 and the cartridge holding part 156. The water purification cartridge 158 is incorporated in the cartridge holding unit 156. The water purification cartridge 158 can be replaced by removing the water discharging member 160.

  The valve 168 is provided inside the cartridge holding unit 156. The valve 168 is pushed out by the water purification cartridge 158 set in the cartridge holding unit 156, and connects the inner tube 170 and the cartridge holding unit 156. The valve 168 is closed by the water pressure in the inner pipe 170 when the water purification cartridge 158 is removed. That is, the valve 168 is a safety device for preventing the water in the inner pipe 170 from being directly sprayed from the tip of another water discharge head 148 when the water purification cartridge 158 is removed in a water-flowing state.

  FIG. 11 is a cross-sectional view of the faucet 100b in a state where another water discharge head 148 is attached to the faucet main body 112. The water faucet 100b is obtained by removing the water discharge head 106 having no water purification function from the water faucet main body 112 of the water faucet 100a and replacing it with another water discharge head 148 having a water purification function. Another spouting head 148 is fixed to the joint pipe 118 by the fastener 120 gripping the joint pipe 118 with the joint pipe 118 inserted into the inner pipe 170. In particular, the fastener 120 is inserted from the first insertion port 122 a of the outer shell 164, and grips the joint pipe 118 through the second insertion port 122 b of the inner pipe 170. In this manner, the separate water discharge head 148 can be easily attached to and detached from the faucet main body 112 in the same manner as the water discharge head 106.

(Check valve)
Next, the check valve 50 will be described. FIG. 12 is a front view of the faucet 100. The faucet 100 includes a water pipe 110a for introducing unheated tap water to the water pipe 110, and another water pipe 110b for introducing heated hot water. The water pipe 110a is provided with a check valve 50a, and another water pipe 110b is provided with a check valve 50b.

  Another water discharge head 148 having a water purification function has a high water flow resistance in the water purification cartridge 158, and has a higher pressure than the water discharge head 106, so that the pressure on the upstream side of the faucet main body 112 decreases (particularly, When a pressure difference occurs between the water pipe 110a for introducing tap water into the faucet main body 112 and another water pipe 110b), there is a high possibility that a backflow will occur as compared with the water discharge head 106. Therefore, in the faucet 100 of the embodiment, the check valve 50 is provided in the faucet main body 112 or in the water channel on the upstream side of the faucet main body 112. By providing the check valve 50, the backflow of water to the upstream side can be suppressed.

  In the faucet 100 of the embodiment, the check valve 50 is provided in the water pipe 110 for introducing tap water into the faucet main body 112. In this case, it is advantageous from the viewpoint of miniaturization of the faucet main body 112.

  Next, the operation of the check valve 50a will be described. The operation of the check valve 50a is common to the operation of the check valve 50b. FIG. 13 is a schematic view showing the operation of the check valve 50a. FIG. 13A shows a state in which the check valve 50a is open, and FIG. 13B shows a state in which the check valve 50a is closed. The check valve 50a is provided in the water pipe 110a on the upstream side of the faucet main body 112, and is provided below a fixing surface (a kitchen counter or the like) to which the faucet main body 112 is fixed. The check valve 50a is formed in a joint 48 for connecting the water pipe 110a to the upstream water pipe. The joint 48 includes a joint body 53, a joint cup 58, and a female screw 58a. The joint body 53 is a hollow cylindrical portion, and a water passage of the check valve 50a is formed on the inner peripheral surface thereof. The joint cup portion 58 is a hollow cylindrical portion provided on the upstream side of the joint body portion 53, and a female screw portion 58a is formed on an inner peripheral surface thereof. The joint cup 58 may be formed integrally with the joint body 53 from a metal material such as brass. The outer diameter and the inner diameter of the joint cup 58 are formed larger than the joint body 53.

  The check valve 50a includes a valve member 51, a valve seat member 52, a guide 54, a spring 55, an O-ring 56, and an O-ring 57. The valve seat member 52 is a hollow annular member, and is fixedly provided on the inner peripheral surface of the joint body 53. An O-ring 57 is fitted between the valve seat member 52 and the joint body 53. At the end of the valve seat member 52, a valve seat 52a is formed in a region where the valve element 51a of the valve member 51 abuts. The valve member 51 includes a valve body 51a and a shaft portion 51b. The shaft portion 51b is a rod-shaped portion extending downstream from the valve body 51a and has a smaller diameter than the valve body 51a. The shaft portion 51b and the valve body 51a may be integrally formed from a metal material such as brass. An O-ring 56 is fitted on the outer peripheral surface of the valve body 51a.

  The guide 54 is a hollow cylindrical member fixedly provided in the middle of the joint body 53. The valve member 51 is movably supported by the guide 54 because the shaft portion 51b is slidably received in the inner peripheral portion of the guide 54. By being supported by the guide 54, the valve member 51 can move freely between the upstream side and the downstream side in the direction of the water channel (the vertical direction in FIG. 13). The spring 55 is a coil spring that surrounds the shaft portion 51b. One end of the spring 55 contacts the inner surface of the joint body 53, and the other end contacts the downstream surface of the valve body 51a. The valve member 51 is pressed toward the valve seat member 52 by receiving the repulsive force of the spring 55 and the water pressure.

  The check valve 50a is closed when the valve member 51 contacts the valve seat member 52, and is opened when the valve member 51 is separated from the valve seat member 52. In the check valve 50a, as shown in FIG. 13 (a), when the water pressure on the upstream side is higher than that on the downstream side, the pressure difference causes the valve member 51 to separate from the valve seat member 52, and as shown by an arrow 59a, Flows. On the other hand, when the water pressure on the downstream side is higher than that on the upstream side, the pressure difference causes the valve member 51 to be pressed toward the valve seat member 52 as shown in FIG. 13B, and the check valve 50a is closed. The water flow is shut off as indicated by arrow 59b. As a result, the backflow of the downstream water to the upstream side can be suppressed.

Next, features of the water faucet 100 thus configured will be described.
In the faucet 100, the faucet main body 112 is configured to be replaceable from the water discharge head 106 having no water purification function to another water discharge head 148 having a water purification function. For this reason, compared with the case of replacing the entire faucet, the work of replacing a faucet without a water purification function with a faucet with a water purification function is facilitated, and the user can easily replace the faucet at home. As a result, replacement costs can be kept low. In addition, since the water purification cartridge can be incorporated in the water discharge head 148, the external appearance is less uncomfortable and the appearance is better as compared with a case where a water purifier protruding below the faucet is attached later. In addition, since the water purification cartridge is built in the water discharge head 148, the water discharge head is prevented from protruding below the water discharge port, and the space between the water discharge port and the sink is not impaired, and the device is easy to use.

  In the faucet 100, the check valve 50 is provided in the faucet main body 112 or on the upstream side of the faucet main body 112. Therefore, when a user who has purchased a water faucet without a water purification function replaces the water discharge head 106 with another water discharge head 148 after the purchase, the user can install the water discharge head downstream of the water faucet main body 112 without retrofitting a check valve. Backflow of the water on the upstream side to the upstream side can be suppressed. That is, since the check valve 50 is provided in the faucet 100 in preparation for replacing the water discharge head in advance, the user only needs to replace the water discharge head.

  The faucet 100 has a water pipe 110a for introducing tap water into the water faucet main body 112, and the check valve 50 includes a check valve 50a provided in the water pipe 110a. Therefore, even when the pressure on the downstream side increases, the possibility that water flows backward through the water pipe 110a can be reduced.

  The faucet 100 has another water pipe 110b for introducing hot water into the water faucet main body 112, and the check valve 50 includes a check valve 50b provided in another water pipe 110b. Therefore, even when the pressure on the downstream side increases, the possibility that water flows backward through the water pipe 110b can be reduced.

  In the faucet 100, the faucet main body 112 has a joint pipe 118 that protrudes from a side surface of the faucet main body 112 and is housed in the water discharge head 106. For this reason, it is easy to replace the water discharge head 106, and the connection portion of the water discharge head to the inner tube is provided in a region protruding from the faucet main body 112. Leaks can be found and corrected early.

(2nd Embodiment)
Next, a faucet 200 according to a second embodiment of the present invention will be described. FIG. 14 is a side view of the faucet 200, and FIG. 15 is a partial cross-sectional view of the faucet 200 along the line AA. The faucet 200 is different from the faucet in that a check valve 250 is provided in the faucet body 212 instead of the check valve 50, and a buffer member 134 is provided between the water discharge head 106 and the faucet body 212. 100 and the other configuration is the same as the faucet 100. Therefore, different points will be mainly described, and redundant description will be omitted. Similarly to the faucet 100 of the embodiment, the faucet 200 of the second embodiment is configured to be exchangeable from the water discharge head 106 having no water purification function to another water discharge head 148 having a water purification function. The faucet main body 212 has a similar configuration corresponding to the faucet main body 112 and is different in that a check valve 250 is provided. The faucet main body 212 includes a column 208, a rotating part 104, and a joint pipe 118.

(Check valve)
Next, the check valve 250 will be described. The check valve 250 includes check valves 250 a and 250 b provided in the middle of the column 208 of the faucet main body 212. The check valve 250a is provided between the upstream water passage 260a and the downstream water passage 260b in the middle of the water passage 260 communicating with the water pipe 110a. The check valve 250b is provided between the upstream water passage 261a and the downstream water passage 261b in the middle of the water passage 261 communicating with the water pipe 110b. The check valves 250a and 250b include a valve member 251, a valve seat member 252, a guide 254, a spring 255, an O-ring 256, and an O-ring 257. The valve member 251 is the valve member 51, the valve seat member 252 is the valve seat member 52, the guide 254 is the guide 54, the spring 255 is the spring 55, the O ring 256 is the O ring 56, and the O ring 257 is the O ring 57. , And have the same configuration and perform the same operation. As a result, even if the faucet 200 is replaced with another water discharge head 148 having a water purification function from the water discharge head 106 not equipped with the water purification function, the backflow of water to the upstream side can be suppressed.

(Buffer)
Next, the cushioning member 134 will be described. FIG. 16 is a perspective view of the buffer member 134 of the faucet 200. FIG. 16A is a perspective view of the buffer member 134 viewed from the side, and FIG. 16B is a perspective view of the buffer member 134 viewed from the rear. The buffer member 134 is a rubber spacer provided between the faucet main body 212 and the water discharge head 106. The cushioning member 134 includes a tubular portion 134b and an overhang portion 134c. The tubular portion 134b is a tubular portion that is connected to the upstream side of the inner pipe 128. The overhang portion 134c is a portion that extends in the radial direction from the upstream side of the cylindrical portion 134b. The overhang portion 134c is provided with a contact surface 136 and a curved edge portion 134a that is a curved outer edge. The contact surface 136 is a portion that contacts the faucet main body 212 at the upstream end surface of the overhang portion 134c. The curved edge portion 134a is a portion provided on the outer edge of the overhang portion 134c. In the faucet 200, the outer shell 126 of the water discharge head 106 does not directly contact the faucet body 212, but comes into contact with the faucet body 212 via the buffer member 134.

  The buffer member 134 has an overhang 134 c that covers the end surface of the outer shell 126 on the faucet main body 212 side. With such a configuration, since the projecting portion 134c of the buffer member 134 is sandwiched in the gap between the faucet main body 212 and the water discharge head 106, this gap becomes inconspicuous and the appearance is improved. In particular, the gap can be made inconspicuous by sandwiching the projecting portion 134c of the cushioning member 134 having flexibility. In addition, when the water discharge head 106 is attached to and detached from the water faucet main body 212, the possibility that the water discharge head 106 damages the water faucet main body 212 can be reduced.

  In the faucet 200, the buffer member 134 is provided at an upstream end of the inner tube 128 as a part of the inner tube 128. The buffer member 134 has a shape that covers the end surface of the outer shell 126. The buffer member 134 may be formed integrally with the inner tube 128. The cushioning member 134 may be formed separately and coupled to the inner tube 128 by bonding or the like. The outer shell 126 of the water discharge head 106 faces the faucet main body 212 via the buffer member 134.

  The buffer member 134 may be a member having a higher elastic modulus than the outer shell 126. The contact width T of the contact surface 136 of the buffer member 134 is at least larger than the thickness of the outer shell 126. The contact surface 136 of the buffer member 134 is processed into a curved shape corresponding to the curved shape of the faucet main body 212. For this reason, the water discharge head 106 and the faucet main body 212 can be connected with a smooth appearance without any gap. Note that the contact surface 136 of the buffer member 134 may have a curved shape that matches the curved shape of the side surface of the faucet main body 212.

  Further, since the water discharge head 106 and the water faucet main body 212 are connected via the elastic buffer member 134, the gap between the water discharge head 106 and the water faucet main body 212 can be made smaller and in close contact. In addition, since the contact surface 136 is enlarged by increasing the contact width T, the pressure due to the connection is easily dispersed, and the faucet main body 212 is not easily damaged by the connection of the water discharge head 106.

  Next, the shape of the edge of the buffer member 134 will be described. FIGS. 17A and 17B are schematic diagrams of the edge shape of the cushioning member 134. FIG. FIG. 17A shows the water discharge head 106 in the state of being mounted. The contact surface 136 is in contact with the faucet main body 212, but the projecting pipe portion 20 is completely accommodated in the accommodating portion 10 of the water discharge head 106. Indicates a state that has not been performed. FIG. 17B shows a state in which the contact surface 136 is in contact with and pressed against the faucet main body 212 in the water discharge head 106 in a state after mounting. From the viewpoint of improving the appearance, it is preferable that the portion of the buffer member 134 which protrudes from the gap between the faucet main body 212 and the water discharge head 106 to the outside is small. Therefore, in the water faucet 200, the buffer member 134 is provided with a curved edge portion 134a which is an outer edge curved. In particular, the cross section of the curved edge portion 134a is curled outward and rounded, and the distal end portion 134d faces the outer peripheral surface of the cylindrical portion 134b. By providing the curved edge portion 134a between the faucet main body 212 and the water discharge head 106, the elasticity at this portion is enhanced, and the faucet main body 212 and the water discharge head 106 can be brought into close contact with no gap. In particular, by connecting the curled portion of the curved edge portion 134a while rolling it in, the gap between the water discharge head 106 and the faucet main body portion 212 is filled, and the portion protruding from the outside can be reduced, and the appearance can be improved. As shown in FIG. 17B, the distal end portion 134d approaches the outer peripheral surface of the tubular portion 134b in the state after the mounting, compared to the state before the mounting. Note that the curved edge portion 134a may be formed in an annular shape at the end of the cushioning member 134, or may be formed by cutting out a part. The curved edge portion 134a may have a tubular section.

  The faucet 200 thus configured has the same features as the faucet 100 by having the same configuration as the faucet 100. In addition, since the buffer member 134 is provided between the faucet main body 212 and the water discharge head 106 in the faucet 200, the buffer member 134 is sandwiched in the gap between the faucet main body 112 and the water discharge head 106. The gap is less noticeable, and the aesthetic appearance is improved. In addition, since the cushioning member 134 has the curved edge portion 134a, the curved edge portion 134a is sandwiched between the outer shell 126 and the faucet main body 112, and the repulsive force makes the both sides adhere to each other to make the gap less noticeable.

  The above has been described based on the embodiments of the present invention. It is understood by those skilled in the art that these embodiments are exemplifications, and that various modifications and changes are possible within the scope of the present invention, and such modifications and changes are also within the scope of the present invention. Is about to be done. Accordingly, the description and drawings in this specification should be treated as illustrative rather than limiting.

  In the description of the faucet 100 of the embodiment, an example is described in which the water discharge head 106 is attached to the faucet main body 112 in a state in which the projecting tube 20 is accommodated up to the base of the projecting tube 20. Not limited. The water discharge head may be configured to be attached to the faucet main body 112 in a state where a part of the projecting pipe portion is housed.

  In the description of the faucet 100 according to the embodiment, an example has been described in which the accommodating portion 10 is provided in the water discharge head 106 and the protruding tube portion 20 is provided in the faucet main body 112, but the invention is not limited thereto. The water discharge head may be provided with a protruding tube portion so that the protruding tube portion is housed in the faucet main body.

  In the drawings used in the description, cross-sections of some members are hatched in order to clarify the relationship between the members, but the hatching does not limit the materials or materials of these members.

  REFERENCE SIGNS LIST 100 faucet, 10 receiving section, 20 projecting pipe section, 50 check valve, 51 valve member, 52 valve seat member, 60 biasing mechanism, 64 sliding member, 66 elastic body, 70 biasing mechanism mounting section, 82 connection Coupling, 104 rotating part, 106 water discharge head, 108 column, 110 water pipe, 110a water pipe, 110b water pipe, 112 faucet body part, 114 column cap, 118 joint pipe, 120 fastener, 122 insertion port, 124 Water inlet, 126 outer shell, 128 inner pipe, 134 buffer member, 134a curved edge, 136 contact surface, 148 water discharge head, 156 cartridge holding part, 158 water purification cartridge, 164 outer shell, 170 inner pipe, 172 tubular member , 174 outer diameter enlarged section, 180 water discharge head end face, 184 water passage section, 186 1st accommodation part, 188 second accommodation part, 190 engaging groove part, 200 faucet, 208 prop part, 212 faucet main body part, 250 check valve, 250a check valve, 250b check valve.

Claims (4)

Equipped with a faucet main body to which the water discharge head is detachably mounted on the side,
The faucet, wherein the faucet main body is configured to be replaceable from a water discharge head having no water purification function to another water discharge head having a water purification function.   The faucet according to claim 1, wherein a check valve is provided in the faucet main body or on an upstream side of the faucet main body. A water pipe for introducing water into the faucet main body,
The faucet according to claim 2, wherein the check valve includes a check valve provided in the water pipe. Said faucet main body, protruding from the side surface of the faucet body portion, and have a joint tubes accommodated in the water discharge head,
The water tap according to any one of claims 1 to 3, wherein the another water discharge head has a water discharge member that can be removed to replace a built-in water purification cartridge .

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