JP2006037582A - Water faucet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water faucet having a higher degree of freedom in design. <P>SOLUTION: A water faucet body 10 has an internal flow path 12 which has a flow path end 18 with a flow path cross section in a double structure where an approximately annular or framed discharge flow path 15 is formed outside a supply flow path 13. The flow path end 18 has a flow-in port (an opening portion 51a) communicated with the supply flow path 12 and a flow-out port (an opening hole 51m) communicated with the discharge flow path 15. An on-off valve 50 is mounted thereon for opening and closing flow paths 53c, 55c communicated with the flow-in port and the flow-out port, respectively. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a faucet, and more particularly to a faucet that can increase the degree of freedom in design.

  The faucet is usually connected to the faucet body connected to the end of the main pipe (the end of the water pipe or the end of the hot water supply pipe) and the faucet body. It comprises a water discharge means (for example, curan water discharge means, shower water discharge means) constituting a part. This faucet body is a “water faucet body part” that incorporates an on-off valve and a temperature control valve. The faucet body has a valve arrangement part on which the on-off valve is arranged, and is located inside the valve arrangement part. A flow path is provided.

Such an internal flow path includes a primary flow path (for example, a water supply flow path) provided on the primary side (upstream side) of the valve arrangement site, and a secondary side flow provided on the secondary side (downstream side) of the valve arrangement site. It is common to provide a channel (for example, a water discharge channel (see FIG. 7 of Patent Document 1)).
JP 2001-81819 A

  In such a faucet, it is considered that it may be difficult to increase the degree of freedom in designing the faucet body, and thus the faucet, due to the configuration of the internal flow path. That is, the appearance of the faucet body and the installation position of the water discharge means can be factors that greatly influence the design of the entire faucet together with the appearance of the operation unit (operation handle and operation lever) and the appearance of the water discharge means. For this reason, in order to increase the design choice of the faucet and, in turn, the degree of freedom in design, it is required to increase the degree of freedom in the choice of the appearance of the faucet body and the installation position of the water discharge means. It may be difficult to increase the value.

  For example, FIG. 8A illustrates a faucet 1 of a type that receives water supply from a terminal portion of the original piping that has reached the lower side of the faucet body 10. In this type of faucet 1, the present applicant, for example, (1) “request that the faucet body 10 be configured to have a more vertically and smart appearance” and (2) “the operation portion of the on-off valve 50” A more innovative appearance can be achieved by simultaneously satisfying the “request to arrange the lever and handle etc.” and the “request to arrange the protruding portion of the water discharge means 70 on the lower side” at the same time. The following studies were conducted on the assumption that it could be obtained.

  First, in order to satisfy the requirements (2) and (3), the valve arrangement portion 11 is provided on the upper end side of the faucet body 10 and the protruding position (installation position) of the water discharge means 70 is set to the faucet body 10. Therefore, it is necessary to configure the internal flow path 12 as follows. That is, as shown in FIG. 8A, the water supply channel 13 is provided in a state of rising from the lower end side of the faucet body 10 toward the valve arrangement site 11, and the water discharge channel 15 is supplied from the valve arrangement site 11 to the water. It is necessary to provide the plug body 10 so as to be lowered to the lower end side or the middle portion in the vertical direction. In other words, the internal flow path 12 includes a water supply flow path 13 that rises from the lower end side of the faucet body 10 toward the arrangement site 11, and a lower side of the faucet body 10 from the arrangement site 11 (primary of the water supply flow path 13. It is necessary to have a configuration including a water discharge passage 15 (hereinafter referred to as a “reverse water discharge passage”) that goes back to the side.

  However, when the water discharge channel 15 is configured in a retrograde type, as shown in FIG. 8B, a water supply channel 13 having a circular channel cross section (a transverse cross section perpendicular to the path direction), and a circular It is necessary to incorporate the water discharge channel 15 having the channel cross section in the faucet body 10 without interfering with each other. That is, the cross section of the faucet body 10 (cross section perpendicular to the direction of the water supply flow path 13 and the water discharge flow path 15) is sufficiently sized, and the water supply flow path 13 that does not interfere with each other in the faucet main body 10 It is necessary to coexist with the water discharge channel 15 in a substantially parallel state. For this reason, the faucet body 10 must be thickened, and the request (1) (“request to configure the faucet body 10 to have a more vertically and smart appearance”) cannot be satisfied. .

  On the other hand, if the designer or manufacturer of the faucet 1 sticks to the request (1) (“request to configure the faucet body 10 to be more vertically long and smart”), for example, As shown in FIG. 9, it is necessary to stop the formation of the “reverse water discharge flow path 15”, for example, to protrude the water discharge means 70 from the side of the valve arrangement site 11. That is, in order to satisfy the request (1), the installation position of the water discharging means 70 is yielded, and the request (3) (“request to place the protruding portion of the water discharging means 70 on the lower side”). It is necessary to give up.

  Thus, in the faucet 1 shown in this specific example, a plurality of design requirements cannot be satisfied at the same time, and the designer, manufacturer, consumer, etc. of the faucet 1 “designs that are truly wanted” It is considered that there is a case where a water faucet having “ability” cannot be obtained.

  This invention solves the above-mentioned subject, and it aims at providing the water tap which can raise the freedom degree of design.

The faucet of the invention of claim 1
The internal flow path provided in the faucet body has a flow path end portion having a dual-structure flow path cross-section in which a substantially annular or substantially frame-like water discharge flow path is provided outside the water supply flow path,
An opening / closing valve that opens and closes the flow path communicating with the inflow port and the outflow port is installed at the end of the flow path, having an inflow port communicating with the water supply flow channel and an outflow port communicating with the water discharge flow channel. It is characterized by becoming.

  According to the invention of claim 1, for example, in a faucet having an internal flow path including a water supply flow path and a retrograde water discharge flow path (a water discharge flow path that goes back to the primary side of the water supply flow path) The degree of freedom can be increased. In other words, in the first aspect of the present invention, the end of the flow path constituting the “folded portion of the flow path” among the internal flow paths (that is, the end on the secondary side of the water supply flow path and the primary of the water discharge flow path). The cross section of the flow path at the end of the flow path constituted by the end portion on the side is a double structure. For this reason, with respect to the predetermined cross section of the faucet body, the secondary side end of the water supply channel and the primary side end of the water discharge channel coexist, The degree of freedom in selecting (thickness) can be increased.

  According to the first aspect of the present invention, according to the “embodiment in which the retrograde water discharge channel is provided in a substantially annular shape or a frame shape outside the water supply channel”, the discharge is performed while suppressing the cross-sectional area of the faucet body. “Ensuring the area of the cross section of the water flow path” means “a mode in which a retrograde water discharge flow path is simply provided (for example, the aspect shown in the specific example of FIG. 8 described above, in which the water discharge flow path and the water supply flow are It is easier compared to the case where the roads are separated from each other and none of them surround the other. Therefore, according to the first aspect of the present invention, the cross-sectional area of the faucet body can be suppressed and the faucet body can be made thin and smart while forming the “reverse water discharge channel” in the faucet body. it can. However, the invention of claim 1 does not preclude the thickening of the faucet body without restricting the cross-sectional area of the faucet body.

  Thus, according to the first aspect of the present invention, the degree of freedom in selecting the size (cross-sectional area) of the faucet body can be increased while forming the “reverse water discharge channel” in the faucet body. For this reason, according to invention of Claim 1, the freedom degree of design of a faucet can be raised.

  Here, in the first aspect of the present invention, the “channel cross section” refers to a cross section (hereinafter referred to as “transverse section”) orthogonal to the path direction of the flow paths (water supply flow path and water discharge flow path). The “channel cross section” at the end of the channel is, for example, the outside of the cross section of the water supply channel (for example, a cross section configured in a substantially circular shape, a substantially elliptical shape, a triangular shape, or a polygonal shape). Is surrounded by a cross-sectional portion configured to have a substantially annular shape or a substantially frame shape of the water discharge channel, with a transverse cross-sectional portion of the partition wall (for example, a cross-sectional portion configured in a substantially annular shape or a substantially frame shape) interposed therebetween.

  The faucet body according to the invention of claim 1, wherein the “portion having the channel cross section having a double structure” may be provided only in the “site where the flow path end is formed”. May be provided in a wider area (more extensive area including the area where the channel end is formed). Specifically, in the faucet body, “substantially the entire region of the water supply channel and the retrograde water discharge channel (for example, a substantially parallel region)” is “a dual-structured channel. It may be a portion having a cross section.

The faucet of the invention of claim 2 is the faucet of claim 1,
The faucet body includes a first cylindrical portion and a second cylindrical portion that is loosely inserted into the first cylindrical portion,
The water supply flow path is configured to include an internal space of the second cylindrical portion, and the water discharge flow path includes a space between the first cylindrical portion and the second cylindrical portion; It is characterized by being.

  Invention of Claim 2 comprises said "part which comprises the channel section of a double structure" using a separate cylindrical part (a 1st cylindrical part and a 2nd cylindrical part). Therefore, it is intended to further increase the degree of freedom in designing the faucet. That is, in the invention of claim 1, the faucet body can be constituted by “an integral product such as a casting”, but as in the invention of claim 2, the faucet body is separated by using a separate cylindrical portion. When configured, the degree of freedom in designing the faucet body is further increased.

  That is, when the faucet body having the above-mentioned “portion having a dual-structure flow passage cross section” is configured as “an integral part of casting”, the wall portion (outer wall) on the outer side of the faucet body, It is necessary to maintain the wall thickness to some extent. The “part having a dual-structure flow path cross section” is provided with a complicated wall structure including a double-structured wall (outer wall and inner wall). Such a complicated wall structure This is because it is necessary to maintain the wall thickness (outer wall and inner wall) to some extent due to molding restrictions if the part provided with is to be integrally formed by casting. In addition, when the faucet body is formed in a long shape and the “part having a complicated wall structure” is also in a long shape, the wall portion (outer wall and inner wall) has a particularly sufficient thickness. It is necessary to make it.

  On the other hand, if a separate cylindrical part is used, the “wall part (outer wall and inner wall) has a double structure” is not created by integral molding, so the thickness of the wall part constituting the part is reduced. This is because the thickness can be reduced as compared with the above-described case of integral molding. In particular, according to the invention of claim 2, a faucet body having a “part having a dual-structure channel cross section” and having a complicated channel configuration (complex wall configuration) is machined (cut). It has a great significance in that it can be created depending on the processing. That is, in the case of manufacturing depending on the cutting process, the thickness can be reduced and the faucet body can be easily manufactured as compared with the case of manufacturing depending on casting (casting).

  In addition, in invention of Claim 2, even if it comprises a water supply flow path only by the internal space of a 2nd cylindrical part, the internal space and other space part (for example, 1st cylindrical shape of a 2nd cylindrical part) The inner space of the cylindrical portion arranged in a state protruding from the first cylindrical portion without being inserted into the portion may be configured. Similarly, even if the water discharge flow path is constituted only by the space between the first cylindrical portion and the second cylindrical portion, this space and another space portion (for example, the second cylindrical portion). May be configured with an internal space of a cylindrical portion into which no intrusion occurs.

The faucet of the invention of claim 3
A faucet body having an internal flow path comprising a primary flow path provided on the primary side of the valve placement site and a secondary flow path provided on the secondary side of the valve placement site;
An on-off valve arranged at the valve placement site and for selecting communication and blocking of the primary side flow path and the secondary side flow path,
A dual-structured channel in which one of the primary-side channel and the secondary-side channel surrounds the other of the primary-side channel and the secondary-side channel. The internal flow path has a cross section.

  According to invention of Claim 3, it has an internal flow path provided with a primary side flow path and a retrograde type secondary side flow path (secondary side flow path going back to the primary side of a primary side flow path), for example. In the faucet, the degree of design freedom can be increased. That is, in the invention of claim 3, for example, in the internal flow path, the flow path end portion constituting the “flowback portion of the flow path” (that is, the secondary side end of the primary flow path and the secondary flow The channel cross section of the channel end portion formed by the primary side end portion of the path has a double structure. And while making the end of the secondary side of the primary side flow path and the end of the primary side of the secondary side flow path coexist with the predetermined cross section of the faucet body, The degree of freedom in selecting the area (thickness) can be increased.

  Therefore, according to the invention of claim 3, for example, while forming a “reverse-type secondary flow path” in the faucet body, the cross-sectional area of the faucet body is suppressed, and the faucet body is thin and smart. It can be. However, the invention of claim 3 does not exclude the aspect of thickening the faucet body without intentionally suppressing the cross-sectional area of the faucet body. Here, in the invention of claim 3, “one of the primary side flow path and the secondary side flow path” is defined as “the other outside of the primary side flow path and the secondary side flow path. “Envelop” refers to the following cases. For example, as a particularly preferable embodiment, an embodiment in which “to one” surrounds the entire outer edge of “to the other” (100%) can be exemplified. Moreover, the aspect which surrounds the desired range selected from "30% or more and less than 100%" of the outer edge part of "... the other" can also be illustrated.

  The “flow channel cross section” of the invention of claim 3 also refers to a flow channel (a cross section orthogonal to the path direction of the primary side flow path and the secondary side flow path, that is, a cross section). Further, in the faucet body of the invention of claim 3, “the portion having the channel section of the double structure” is “the channel end (the secondary side end of the primary side channel and the secondary side). It may be provided only in the “part where the end part of the flow path constituted by the primary side end part of the flow path is formed”, but the wide range part (the part where the end part of the flow path is formed) Regardless of whether it is included or not, it may be provided in a wider area). Specifically, in the faucet body, “a substantially entire region of a part where the primary side flow path and the retrograde secondary side flow path are provided side by side (for example, a substantially parallel part)” is “a double structure. It may be a portion having a flow path cross section. In the faucet body of the invention of claim 3, the “portion having a double-structure channel cross section” may be provided only at a site other than the “channel end”.

  In the invention of claim 3, any one of the primary side flow path and the secondary side flow path may be arranged inside. Moreover, the number of primary side flow paths may be one or plural. For example, as a primary side flow path, a flow path for water supply (for example, a flow path for directly supplying water supplied from the terminal portion of the water pipe to the faucet body), and a flow path for hot water supply (for example, Rather than being supplied as it is from the terminal of the water pipe, it is provided with one of the following: a flow path for supplying water that has been heated to a desired temperature and then heated or heated. Both may be provided. In the case where the primary flow path is composed of a water supply flow path and a hot water supply flow path, the open / close valve has water supplied from the water supply flow path and hot water supplied from the hot water supply flow path. And a function as a mixing valve for mixing the two. Alternatively, another valve arrangement part may be provided on the primary side of the valve arrangement part, and a mixing valve may be separately arranged in this other valve arrangement part.

  In the invention of claim 3, the number of secondary side flow paths may be one or plural. That is, as the secondary channel, one water discharge channel may be provided, or a plurality of water discharge channels may be provided. In addition, as an aspect of the former, the aspect provided with the water discharge flow path for currant water discharge or the water discharge flow path for shower water discharge can be illustrated as a water discharge flow path, and as the water discharge flow path, as the water discharge flow path, Examples include a case where a water discharge channel and a water discharge channel for shower water discharge are provided, or a case where a plurality of one of a water discharge channel for water discharge and a water discharge channel for shower water discharge are provided. Moreover, in the aspect provided with two or more secondary side flow paths, the on-off valve may have a function as a “flow path switching valve” for selecting which water discharge flow path is used for water discharge.

The faucet of the invention of claim 4 is the faucet of claim 3,
In the cross section of the dual structure, one of the primary side flow path and the secondary side flow path has a substantially annular shape, a substantially frame shape, a substantially arc shape, a substantially U shape, and a substantially C shape. The outer side of the primary side flow path and the secondary side flow path is surrounded while being substantially U-shaped or substantially V-shaped.

  The invention of claim 4 shows a specific example of “a cross section of the channel having a double structure” shown in the invention of claim 3. That is, as described above, in the invention according to claim 3, the aspect of the “double-structure channel cross section” is that the channel (one of the primary side channel and the secondary side channel) arranged on the outside is Further, the present invention is not limited to an aspect in which the flow path (the other of the primary flow path and the secondary flow path) disposed inside is completely surrounded. That is, the aspect which the part which is not surrounded by the flow path arrange | positioned outside may exist in a part along the circumferential direction among the flow paths arrange | positioned inside. The invention of claim 4 shows specific examples of these aspects. In addition, when the flow path (one of the primary side flow path and the secondary side flow path) arranged on the outer side has a substantially arc shape, the central angle is from 120 degrees or more and less than 360 degrees. Preferably it is selected.

  The “double-structure channel cross section” of the invention of claim 4 is, for example, a cross section (for example, approximately) of a channel (the other of the primary side channel and the secondary side channel) disposed inside. The outer side of the circular, substantially elliptical, triangular, or polygonal cross section is sandwiched between the cross section of the partition wall (for example, the cross section configured in a substantially annular shape or a frame shape). The cross section (substantially annular, substantially frame-shaped, substantially arc-shaped, substantially U-shaped, substantially C-shaped) of the channel (one of the primary-side channel and the secondary-side channel) disposed on the outside Shape, a substantially U-shape, or a substantially V-shaped cross section).

The faucet of the invention of claim 5 is the faucet according to claim 3 or claim 4,
The faucet body includes a first cylindrical portion and a second cylindrical portion that is loosely inserted into the first cylindrical portion,
One of the primary side flow path and the secondary side flow path is configured to include an internal space of the second cylindrical portion, and the other of the primary side flow path and the secondary side flow path. However, it is set as the structure containing the space between a said 1st cylindrical part and a said 2nd cylindrical part.

  In the invention of claim 5, as in the invention of claim 2, by using a separate cylindrical part, a “part having a dual-structure channel section” in the faucet body is constituted. It is intended to further increase the design freedom of the faucet. In the invention of claim 5, even if one of the primary side flow path and the secondary side flow path is constituted only by the internal space of the second cylindrical part, the internal space of the second cylindrical part and the other (For example, an internal space of the cylindrical portion that is not loosely inserted into the first cylindrical portion and is disposed so as to protrude from the first cylindrical portion). Similarly, even if the other of the primary side flow path and the secondary side flow path is configured only by the space between the first cylindrical portion and the second cylindrical portion, this space and the other You may comprise by a space part (For example, the internal space of the cylindrical part into which the 2nd cylindrical part is not inserted).

The faucet of the invention of claim 6 is the faucet according to any one of claims 1 to 5,
The on-off valve is a sliding valve having a fixed disk and a movable disk.

  According to the sixth aspect of the present invention, since the slide valve that can be easily made compact is used as the on-off valve, the degree of freedom in designing the faucet can be further increased. That is, in the case of a sliding valve, it is easy to reduce the thickness of the valve body (fixed disk and movable disk) itself, which is the main part of the valve, and it is not necessary to lift the valve body when opening and closing the valve. For this reason, when a sliding valve is used, the on-off valve can be made compact. Therefore, since the arrangement space of the on-off valve does not become large in the faucet body, the degree of freedom in designing the faucet body and thus the faucet can be further increased.

  Here, in the present application, the “sliding valve” refers to, for example, “a valve (valve device) configured using a fixed disk and a movable disk that slide to open and close the flow path”. In addition, in invention of Claims 1-5, valve apparatuses other than a "sliding valve" can also be used as an on-off valve. For example, a lift-type valve device (a valve device that selects a discharge and adjusts the amount of discharged water by moving the valve body forward and backward with respect to a pair of opposed valve ports) can also be used. In addition, the “open / close valve” of the first to sixth aspects of the invention may select only the discharge or may adjust the water discharge amount together with the selection of the discharge.

  As described above, according to the inventions of the present invention, a water faucet having a higher degree of design freedom can be obtained.

  Next, the best mode (hereinafter referred to as “Example”) of the “water faucet” according to each invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the faucet 1 is a deck-type single faucet that is used by being installed in a deck part (base part) 2. The faucet 1 includes a faucet body 10, an on-off valve 50, water discharge means 70, and an operation handle 80. Further, the faucet body 10 includes an outer body 20 constituting an outer shell and an internal flow path member 30 that forms a flow path while allowing the upper half side portion to enter the outer body 20.

  The outer body 20 is manufactured by machining (cutting or the like), is configured using a substantially cylindrical body that is long in the vertical direction (axial direction), and has openings 21 at the upper and lower ends. , 22. In the outer body 20, the upper end side (site close to the upper end opening 21) is the valve fixing part 20 a, and the lower end side (part close to the lower end opening 22) is the female connection part 20 b. In addition, the other portion (portion sandwiched between the valve fixing portion 20a and the female connection portion 20b) is used as the first cylindrical portion 20c.

  The inner diameter of the valve fixing portion 20a is made smaller than the inner diameter of the first cylindrical portion 20c positioned below the valve fixing portion 20a. A female screw portion 24 for screwing and fixing an on-off valve 50 described later is provided on the inner wall of the valve fixing portion 20a. Furthermore, the inner diameter of the female connection portion 20b is made larger than the inner diameter of the first cylindrical portion 20c located above the female connection portion 20b. A female screw portion 25 is formed on the inner wall on the upper half side of the female connection portion 20b.

  In the side surface of the first cylindrical portion 20c, an opening hole 23 is provided in a lower portion along the vertical direction (axial direction). And the water discharging means 70 protrudes and is fixed to this downward site | part, making the axial center go up and making it inclined. The water discharge means 70 is a so-called “curan” and has an internal space communicating with the inside of the outer body 20 through the opening hole 23. The opening hole 23 constitutes an end portion on the secondary side of the “water discharge channel 15” as will be described later. Further, in the present embodiment, the water discharge means 70 separate from the outer body 20 is integrated by being retrofitted to the outer body 20, but the water discharge means 70 may be integrally formed as a part of the outer body 20. Good. In this case, the terminal portion of the water discharging means 70 constitutes the secondary side end portion of the “water discharging flow path 15”.

  The internal flow path member 30 is configured separately from the outer body 20, and forms a water supply flow path 13 in the faucet body 10, and a partition wall section that partitions the water supply flow path 13 and the water discharge flow path 15. It constitutes. The internal flow path member 30 is also manufactured by machining (cutting or the like), and is configured using a substantially cylindrical body that is long in the vertical direction (axial direction), and has an upper end and a lower end. Openings 31 and 32 are provided.

  The inner diameter of the internal flow path member 30 is substantially constant along the vertical direction (axial direction). Further, the internal flow path member 30 is provided with a large-diameter portion 30c whose outer diameter is enlarged like a bowl in the middle along the vertical direction (axial direction), and is located above the large-diameter portion 30c. The site | part located is made into the 2nd cylindrical part 30a, and the site | part located below the large diameter part 30c is used as the piping connection part 30b.

  The outer diameter of the second cylindrical portion 30a is smaller than the inner diameter of the first cylindrical portion 20c. The total length (length along the axial direction) of the second cylindrical portion 30a is shorter than the total length (length along the axial direction) of the first cylindrical portion 20c. Furthermore, the upper end surface 31b of the second cylindrical portion 30a (that is, the upper end surface of the internal flow path member 30) is a smooth surface.

  On the outer peripheral surface of the large-diameter portion 30c, a male screw portion 33 that can be screwed with the above-described “female screw portion 25 of the female connecting portion 20b” is provided at a portion other than the lower end side. Further, a circumferential groove is provided at a lower end portion of the outer peripheral surface of the large diameter portion 30c, and a seal packing 33a is attached to the circumferential groove. Furthermore, the external thread part 35 is provided in the outer peripheral surface of the piping connection part 30b.

  The outer body 20 configured as described above and the internal flow path member 30 are assembled as follows. That is, with the upper end surface 31b of the second cylindrical portion 30a as the head, the second cylindrical portion 30a is loosely inserted into the first cylindrical portion 20c through the opening 22 at the lower end of the outer body 20. At the same time, when the male thread portion 33 of the large diameter portion 30c is screwed into the female thread portion 25 of the female connection portion 20b, the assembly of the outer body 20 and the internal flow path member 30 is completed, and the faucet body 10 is completed. . As described above, in this embodiment, the faucet body 10 is simply completed by combining two tubular bodies (the outer body 20 and the inner flow path member 30) that can be easily manufactured by machining (cutting estuary). .

  In the completed faucet body 10, the internal space of the internal flow path member 30 constitutes a water supply flow path 13 having a substantially circular cross section (cross section orthogonal to the flow path direction of the flow path). In addition, a space is formed between the outer wall of the second cylindrical portion 30a and the inner wall of the first cylindrical portion 20c, and a flow path cross section (a cross section perpendicular to the path direction of the flow path) is formed by this space. A substantially annular water discharge channel 15 is formed. Further, in the faucet body 10, a substantially columnar “vacant space 6” is formed between the back end portion 20e of the first cylindrical portion 20c and the upper end surface 31b of the second cylindrical portion 30a. The And this empty space 6 and the internal space of the valve fixing | fixed part 20a connect, and the valve arrangement | positioning site | part 11 (valve mounting site | part) where the on-off valve 50 is arrange | positioned is comprised.

  In the faucet body 10, as the internal flow path 12, a water supply flow path 13 (primary side flow path) provided on the primary side of the valve arrangement site 11 and a water discharge flow path 15 provided on the secondary side of the valve arrangement site 11. And. Further, the water discharge channel 15 is configured in a “reverse type” in which the water discharge channel 15 moves backward to the primary side of the water supply channel 13. Then, in the substantially entire region of the portion where the water supply passage 13 and the retrograde water discharge passage 15 are provided (for example, a portion aligned in parallel) (that is, in the first cylindrical portion 20c, the second The entire portion in which the cylindrical portion 30a is inserted is defined as “a portion having a dual-structure channel cross section”.

  That is, as shown in FIG. 2, the flow path end 18 configured such that the secondary end 13 a of the water supply flow path 13 and the primary end 15 a of the water discharge flow path 15 are arranged in the same cross section. Not only the water supply flow path 13 and the substantially entire region where the retrograde water discharge flow path 15 is provided is defined as “a portion having a double-structure flow path cross section”.

  Next, the opening / closing valve 50 arranged in the valve arrangement part 11 of the faucet body 10 will be briefly described with reference to FIGS. The on-off valve 50 is configured by using a sliding valve, and includes a housing 51, a spindle 52, a fixed disk 53, and a movable disk 55 as shown in FIG.

  As shown in FIG. 2, the housing 51 is formed in a substantially cylindrical shape having openings 51a and 51b at both front and rear ends, and is a ring member that is detachably attached to the rear end of the housing main body 51c and the housing main body 51c. 51d. Further, a flange portion 51p protrudes from an intermediate portion along the front-rear direction in the outer peripheral surface of the housing main body 51c. Furthermore, a male screw portion 51e that can be screwed into the female screw portion 24 of the valve fixing portion 20a is provided in a portion of the outer peripheral surface of the housing main body 51c at the rear of the flange portion 51p. In addition, an opening 51m that communicates the inside and the outside of the housing main body 51c is provided in a portion of the outer peripheral surface of the housing main body 51c behind the male screw portion 51e. The opening holes 51m are provided at two locations along the circumferential direction of the housing body 51c.

  In the housing main body 51c, a portion in front of the flange portion 51p constitutes a bearing portion 51n for supporting the spindle 52 in a rotatable manner. The opening 51a at the front end of the housing 51 is provided at the front end of the bearing 51n, and the opening 51b at the rear end of the housing 51 is provided in the ring member 51d. The opening 51b at the rear end of the housing 51 constitutes a specific example of the “inlet (inlet communicating with the water supply channel 13)” of the first aspect of the invention. Moreover, the opening hole 51m of the housing main body 51c constitutes a specific example of the “outlet (outlet communicating with the water discharge passage 15)” of the first aspect of the invention.

  Circumferential grooves that surround the opening 51b are provided on the front and back surfaces (front and rear surfaces) of the ring member 51d, and ring-shaped packings 51f and 51g are attached to these peripheral grooves, respectively. Yes.

  The spindle 52 includes a shaft portion 52a that constitutes the first half portion and a drive transmission portion 52b that constitutes the second half portion. A male serration portion 52c is provided on the outer peripheral surface on one end side of the shaft portion 52a, and three circumferential grooves are provided on a portion of the outer peripheral surface on the rear side of the serration portion 52c. Each of these circumferential grooves is provided with a ring-shaped packing 52g. Further, the rear end portion of the drive transmission portion 52b is an engagement protrusion 52d having a substantially rectangular cross section.

  The spindle 52 is incorporated in the housing 51 in a state where the serration portion 52c is exposed to the front of the housing 51 (housing main body 51c) through the opening 51a and the three packings 52g are in sliding contact with the inner wall of the bearing portion 51n. ing.

  The fixed disk 53 is made of ceramic and has a substantially disk shape as shown in FIG. As shown in FIG. 3A, the fixed disk 53 has a front surface (upper surface) as a sliding surface 53a on which the movable disk 55 slides, and a rear surface (lower surface) supported by the front surface of the ring member 51d. Yes. The fixed disk 53 includes two passage holes 53c so as to penetrate the upper and lower surfaces. These passage holes 53c are provided at positions separated by approximately 180 degrees along the circumferential direction of the fixed disk 53, and the planar shape is substantially fan-shaped.

  As shown in FIG. 3A, positioning projections 53d are provided at positions on the outer peripheral surface of the fixed disk 53 that are separated by approximately 180 degrees along the circumferential direction. The fixed disk 53 is inserted into the housing main body 51c from the rear end of the housing main body 51c with the sliding surface 53a facing forward and the “surface opposite to the sliding surface 53a (rear surface)” facing rearward. Has been. At this time, the two positioning protrusions 53d are locked to locking portions (not shown, but, for example, in the form of grooves) on the inner wall of the housing body 51c, and the fixed disk 53 is positioned around the axis. .

  As described above, the ring member 51d is attached to the rear end of the housing main body 51c with the fixed disk 53 inserted into the housing main body 51c. However, as shown in FIG. ”Of the packing 51f” is pressed in a watertight manner on the peripheral side portion of the “surface on the anti-sliding surface 53a side (rear surface)”. At this time, the passage hole 53c of the fixed disk 53 is opened to the rear of the housing 51 through the opening 51b of the ring member 51d.

  The movable disk 55 is also made of ceramic, and as shown in FIGS. 3B and 3C, the planar shape is a substantially oval plate-like body. The movable disk 55 has a front surface (upper surface) as an engagement surface 55a and a rear surface (lower surface) as a sliding surface 55b that slides with the “sliding surface 53a of the fixed disk 53”. Further, as shown in FIGS. 3B, 3C, 4A, and 4B, a notch-shaped communication path 55c is provided in a portion along each long side of the movable disk 55. In the movable disk 55, the communication path 55c opens at the sliding surface 55b and the outer peripheral surface, but does not open at the locking surface 55a. That is, the two communication passages 55 c provided along the long sides of the movable disk 55 open in a substantially V shape on the sliding surface 55 b and open in a substantially rectangular shape on the outer peripheral surface of the movable disk 55. is doing.

  An engaging hole 55d having a substantially rectangular planar shape (a long, substantially rectangular shape) is opened in front (upward) of the movable disk 55 on the engagement surface 55a of the movable disk 55. The engaging projection 52d of the spindle 52 can be fitted (engaged) in the engaging hole 55d. The movable disk 55 is a housing in which the fixed disk 53 and the sliding surfaces 55b and 53a are brought into contact with each other, and the axis of the movable disk 55 is coaxially aligned with the axis of the fixed disk 53. 51.

  However, in this embodiment, as shown in FIG. 2, a disk presser 56 is disposed between the movable disk 55 housed in the housing 51 and the spindle 52. As shown in FIGS. 3 (c) and 4 (c), the disk retainer 56 is formed in a substantially disc shape, and “disc gripping protrusion 56a from a position approximately 180 apart on the rear surface (lower surface)”. Is hanging down. These protrusions 56a oppose smooth gripping surfaces 56b to each other. The distance between the two opposing gripping surfaces 56 b is equal to the distance between the long sides of the movable disk 55. Further, the disk presser 56 is provided with a substantially rectangular through hole 56c penetrating the upper and lower surfaces. The through hole 56c is formed substantially parallel to the gripping surface 56b.

  As shown in FIG. 3C and the like, the movable disk 55 is held by a disk presser 56 on the side of the engaging surface 55a. That is, the rear surface (lower surface) of the disk retainer 56 and the engaging surface 55a of the movable disk 55 are brought into contact with each other, and the side surface portion on the long side of the movable disk 55 is held by the grip surfaces 56b of the two disk grip protrusions 56a. Is held. The engagement hole 55d of the movable disk 55 is opened forward (upward) of the disk retainer 56 through the through hole 56c. In this state, the engagement protrusions 52d are engaged (fitted) into the engagement holes 55d from the front side of the disk presser 56 through the through holes 56c.

  In this on-off valve 50, as shown in FIG. 2, a spindle 52, a movable disk 55, a disk retainer 56 for holding the movable disk 55, and a fixed disk 53 are accommodated in a housing 51 while being coaxial. Has been. In the shaft portion 52a of the spindle 52, a circumferential groove is provided in a portion between the male serration portion 52c and the ring-shaped packing 52g, and an E ring 58 is elastically engaged with the circumferential groove. Yes.

  A female serration portion (not shown) of the operation handle 80 is serrated and fitted to the male serration portion 52c of the spindle 52 exposed to the front (upper) of the housing 51. When the operation handle 80 is rotated, the rotational driving force of the spindle 52 is transmitted to the disk presser 56 and the movable disk 55 as shown in FIG. Thereby, the movable disk 55 slides on the fixed disk 53 and opens and closes the flow path of the on-off valve 50. Note that the flow path of the on-off valve 50 (the flow path communicating with the flow path port and the outlet) includes a passage hole 53c and a communication path 55c.

  As shown in FIG. 5B, the on-off valve 50 is closed when the passage hole 53c of the fixed disk 53 is closed on the sliding surface 53a side. That is, when the “opening on the sliding surface 53a side of the passage hole 53c” is closed by the “non-formation portion of the communication passage 55c in the movable disk 55”, the on-off valve 50 is closed, and the water supply flow path 13 and the water discharge flow path 15 will be in the state interrupted | blocked. On the other hand, when the movable disk 55 is slidably rotated on the fixed disk 53 and the passage hole 53c and the communication path 55c are communicated with each other as shown in FIG. 5C, the on-off valve 50 is opened. The water supply channel 13 and the water discharge channel 15 are in communication. The opening degree (valve opening amount) of the on-off valve 50 at this time is determined in proportion to the opening area of the “opening of the passage hole 53c on the sliding surface 53a side”.

  Next, a construction example of the faucet 1 will be described. First, the mounting hole 2a which penetrates the upper and lower surfaces is provided in the deck part (base part) 2 (see FIG. 1). On the other hand, the faucet body 10 is assembled (assembly of the outer body 20 and the internal flow path member 30), and the on-off valve 50 is attached to the faucet body 10. The on-off valve 50 is mounted with the front end of the spindle 52 facing upward and the rear end of the housing 51 facing downward, while the rear portion of the housing 51 from the flange portion 51p is swung in the valve arrangement portion 11. The insertion is performed by screwing the male screw part 51e of the housing 51 into the female screw part 24 of the valve fixing part 20a. When the rear end surface of the flange portion 51p comes into contact with the upper end surface of the outer body 20, the mounting of the on-off valve 50 is completed.

  At this time, the front portion of the housing 51 from the flange portion 51p protrudes above the faucet body 10 together with the serration portion 52c of the spindle 52. In addition, the rear portion of the flange 51p in the housing 51 is inserted into the “empty space 6” described above, and the rear end surface of the housing 51 is in contact with the upper end surface 31b of the second tubular portion 30a. A substantially annular space portion 6b (see FIG. 2) exists between the outer peripheral surface of the rear portion of the flange portion 51p and the inner wall of the outer body 20 in the housing 51, and an opening hole 51m. However, it communicates with the water discharge channel 15 through the space portion 6b.

  An opening 51b at the rear end of the housing 51 (opening 51b of the ring member 51d) is aligned coaxially with the second cylindrical portion 30a, and a rear end surface of the housing 51 (a rear surface of the ring member 51d). ) And the upper end surface 31b of the second cylindrical portion 30a is ensured by the ring-shaped packing 51g. At this time, the water supply flow path 13 constituted by the internal space of the internal flow path member 30 and the inflow port of the on-off valve 50 (the opening 51b at the rear end of the housing 51) are in communication with each other.

  Subsequently, the pipe connection part 30b of the faucet body 10 is inserted from the upper part to the lower part of the deck part (base part) 2 through the attachment hole 2a. Then, a fixing member (fixing nut) 8 is screwed into the pipe connection portion 30b below the deck portion (base portion) 2, and the fixing member (fixing nut) 8 and the lower end surface of the faucet body 10 are connected to each other. Thus, the faucet 1 is attached to the deck part (base part) 2 while sandwiching the deck part (base part) 2. Furthermore, the terminal part T of water supply piping is connected to the piping connection part 30b below the deck part (base part) 2. When the female serration portion (not shown) of the operation handle 80 is serrated and fitted to the male serration portion 52c of the spindle 52 above the deck portion (base portion) 2, the faucet 1 is It will be ready for use.

  As shown in FIG. 1, between the lower end surface of the faucet body 10 (the lower surface of the large-diameter portion 30c) and the upper surface of the deck portion (the base portion) 2, or the fixing member (the fixing nut) 8 and the deck Seal members 9 a and 9 b are arranged between the lower surface of the portion (base portion) 2. A washer 9c is disposed between the fixing member (fixing nut) 8 and the seal member 9b.

  In the faucet 1, when the operation handle 80 is opened, the on-off valve 50 is opened. Thereby, the water supplied to the water supply flow path 13 from the terminal part T of water supply piping is the flow path of the on-off valve 50 (consisting of the passage hole 53c and the communication path 55c), the space portion 6b, and the water discharge flow path 15. Then, water is discharged from the water discharging means 70. On the other hand, when the closing operation is performed on the operation handle 80, the on-off valve 50 is closed. Thereby, the flow path of the on-off valve 50 is closed, and water discharge through the water discharge means 70 is stopped.

  According to the present embodiment, in the faucet 1 including the internal flow path 12 including the water supply flow path 13 and the retrograde water discharge flow path 15, the degree of freedom in design can be increased. That is, in the faucet body 10 of the present embodiment, not only “the channel end 18 constituting the folded portion of the channel in the internal channel 12” but also “the water supply channel 13, the retrograde water discharge channel 15, and “Substantially the entire region of the portion where the two are arranged in parallel” is defined as “a portion having a dual-structure channel cross section”. For this reason, compared with the aspect which only provides "the water supply flow path 13 and the water discharge flow path 15 which are both circular flow path cross sections," "the water discharge flow path 15 while suppressing the cross-sectional area of the faucet main body 10. It is easy to ensure the area of the flow path cross section.

  That is, unlike the present embodiment, if the “circular cross section of the water supply flow path and the circular cross section of the water discharge flow path” are simply attached to the same cross section of the faucet body 10, The cross section of the faucet body 10 needs to be sized so that “two circular cross sections” can be formed in the horizontal direction. For this reason, it is difficult to make the faucet body 10 compact. That is, it is necessary to make the diameter of the cross section of the faucet body 10 larger than the “diameter of two circular cross sections”. For this reason, the transverse cross section of the faucet body 10 is set to a sufficient size as shown by a one-dot chain line (a line illustrating the outer edge of the faucet body 10 according to the comparative example) L in FIG. is necessary.

  On the other hand, as shown by a solid line M in FIG. 6A (a line exemplifying the outer edge portion of the faucet body 10 according to the embodiment), the transverse section of the water supply passage 13 is held by the transverse section of the water discharge passage 15. When enclosing (when enclosing), the size of the cross section of the faucet body 10 can be reduced. That is, across the "substantially circular cross section G1 (transverse section of the water supply flow path 13)", the cross section G2 of the substantially annular partition wall (the cross section of the second cylindrical portion 30c) is sandwiched, According to the aspect in which the “circular cross section G3 (transverse section of the water discharge channel 15)” is arranged, the size of the cross section of the faucet body 10 is made smaller than in the case of arranging two circular cross sections. This is because it is easy.

  Thus, according to the present embodiment, while forming the “reverse water discharge channel 15” in the faucet body 10, the cross-sectional area of the faucet body 10 is suppressed, and the faucet body 10 has a thin and smart outer shape. can do. Moreover, since the water supply flow path 13 and the water discharge flow path 15 are configured using separate cylindrical bodies (the outer body 20 and the internal flow path member 30), the degree of freedom in designing the faucet 1 is further increased. Can be increased. In particular, in the present embodiment, the outer portion 20 constituting the faucet body 10 and the internal flow path member 30 are produced depending on the cutting process, and therefore, compared with the case where the production is carried out depending on casting (casting). The wall thickness can be reduced and the faucet body 10 can be easily manufactured. For this reason, the manufacturing cost of the faucet body 10, and thus the faucet 1, can be reduced and the weight can be reduced.

  In addition, in the present Example, the same outer body 30 and the internal flow path member 30 can also be used universally in the water tap 1 of various aspects. That is, in this embodiment, since the faucet body 10 is configured by inserting the internal flow path member 30 into the external body 30, the external body 30 and the internal flow path member are different in form (different in shape, external shape, size, etc.). 30 can be combined to obtain various types of faucets 1.

  In the present embodiment, since the slide valve that is easy to make compact is used as the on-off valve 50, the degree of freedom in designing the faucet 1 can be further increased. In other words, if it is a sliding valve, it is easy to reduce the thickness of the valve body (the fixed disk 53 and the movable disk 55) itself that is the main part, and it is not necessary to lift the valve body when opening and closing the valve. Is possible. For this reason, in the faucet main body 10, since the arrangement space of the on-off valve 50 does not become large, the freedom degree of design of the faucet main body 10, and by extension, the faucet 1 can be improved further.

  The scope of each invention is not limited to the specific modes shown in the above embodiments, and various modifications can be exemplified within the scope of each invention. That is, unlike the present embodiment, the outer flow path may be surrounded without completely surrounding the inner flow path. For example, as shown in FIG. 6B, the water supply flow path 13 having a substantially circular flow path cross section may be surrounded by the water discharge flow path 15 having a substantially circular arc cross section.

  Further, unlike the present embodiment, each invention can be applied to a hot and cold water mixing faucet. For example, as shown in FIG. 7A, a hot water supply water supply channel (hot water supply channel) 13b having a substantially annular channel cross section surrounds the outside of the water supply water supply channel 13a, Furthermore, the outside of the water supply channel (hot water supply channel) 13b for supplying hot water is surrounded by a water discharge channel 15 having a substantially annular channel cross section, and the arrangement order of these channels (whichever is outside) An example of changing the order of arrangement).

  Furthermore, the aspect which illustrates the aspect etc. which the water discharge flow path 15 surrounds the outer side of the water supply flow path 13a for water supply, and the water supply flow path (hot water supply flow path) 13b for hot water supply, A mode of changing the positional relationship (the positional relationship of which two are inside) can be exemplified.

  Further, in the present embodiment, a specific example in which the path of the primary side channel (water supply channel 13) and the path of the secondary side channel (water discharge channel 15) are formed in a substantially vertical direction is illustrated. However, the paths of the primary side channel (water supply channel 13) and the secondary side channel (water discharge channel 15) are not limited to this. For example, these paths may be formed in an inclined direction or a lateral direction, or may be formed in an arc shape or the like. Further, in the path of the primary side channel (water supply channel 13) and the secondary side channel (water discharge channel 15), a portion formed in a substantially vertical direction, a portion formed in an inclined direction, Two or more of the part formed in the horizontal direction and the part formed in the arc shape may be mixed. Furthermore, in the present embodiment, the deck type faucet 1 is illustrated, but the faucet type to which the invention of each claim is applied is not limited thereto. For example, other types of faucets such as a wall type may be used.

  Each of the present invention is more suitable when applied to a cold district. In the case where a faucet is applied to a cold region, a drain faucet is provided in the middle of the water supply channel. And when freezing is anticipated, the drain plug is opened and the water in the water supply flow path is discharged to prepare for freezing. In this case, if a large amount of water remains in the water discharge flow path, the remaining water freezes, and when it is desired to discharge water from the faucet again, a long thawing time is forced. However, since the cross-sectional area of the water discharge channel can be reduced in each of the present inventions, the remaining water in the water discharge channel can be reduced, and even when freezing occurs, the amount of freezing can be reduced and the thawing time can be shortened. Because it can.

  The present invention can be used, for example, in the field of manufacturing, selling, installing, processing and the like of faucets.

It is a longitudinal cross-sectional view of the water tap of an Example. It is a longitudinal cross-sectional view of the on-off valve of a present Example. (A) is a plan view of a fixed disk constituting the on-off valve of this embodiment, (b) is a plan view of a movable disc constituting the on-off valve of this embodiment, and (c) is a construction of the on-off valve of this embodiment. FIG. 3B is a longitudinal sectional view showing the relationship between the spindle, the disk presser, and the movable disk {corresponding to the bb section in FIG. 3B. }. (A) is a bottom view of the movable disk constituting the on-off valve of the present embodiment, (b) is a cross-sectional view of the movable disk constituting the on-off valve of the present embodiment {cross-section cc of FIG. Equivalent to. } And (c) are plan views of the disk presser constituting the on-off valve of this embodiment. (A) is explanatory drawing for demonstrating the movable state etc. of a movable disk in the on-off valve of a present Example, (b) is explanatory drawing which shows a valve closing state in the on-off valve of a present Example, (c) is this implementation. It is explanatory drawing which shows a valve opening state in the example on-off valve. (A) is explanatory drawing for demonstrating the flow path cross section of a double structure in an Example, (b) is explanatory drawing for demonstrating the flow path cross section of a double structure in the 1st modification of an Example. is there. (A) is explanatory drawing for demonstrating the flow path cross section of a double structure in the 2nd modification of an Example, (b) demonstrates the flow path cross section of a double structure in the 3rd modification of an Example. It is explanatory drawing for doing. (A) is a schematic longitudinal cross-section of the faucet body according to a specific example compared with the faucet according to the present invention, and (b) is a schematic cross-sectional view of the faucet body of FIG. 8 (a). It is a schematic longitudinal cross-section of the faucet body which concerns on the other specific example contrasted with the faucet which concerns on this invention.

Explanation of symbols

1; faucet,
10; faucet body,
11; valve arrangement site,
12; internal flow path,
13; water supply channel,
15; water discharge channel,
18; end of flow path,
50; on-off valve,
51a; opening (inlet),
51m; opening hole (outlet),
53c and 55c; flow path,
70; Water discharge means.

Claims (6)

The internal flow path provided in the faucet body has a flow path end portion having a dual-structure flow path cross-section in which a substantially annular or substantially frame-like water discharge flow path is provided outside the water supply flow path,
An opening / closing valve that opens and closes the flow path that communicates with the inflow port and the outflow port is installed at the end of the flow path and has an inflow port that communicates with the water supply flow path and an outflow port that communicates with the water discharge flow path. A faucet characterized by The faucet body includes a first cylindrical portion and a second cylindrical portion that is loosely inserted into the first cylindrical portion,
The water supply flow path is configured to include an internal space of the second cylindrical portion, and the water discharge flow path includes a space between the first cylindrical portion and the second cylindrical portion; The faucet according to claim 1, wherein: A faucet body having an internal flow path comprising a primary flow path provided on the primary side of the valve placement site and a secondary flow path provided on the secondary side of the valve placement site;
An on-off valve arranged at the valve placement site and for selecting communication and blocking of the primary side flow path and the secondary side flow path,
A dual-structured channel in which one of the primary-side channel and the secondary-side channel surrounds the other of the primary-side channel and the secondary-side channel. A faucet characterized in that the internal channel has a cross section.   In the cross section of the dual structure, one of the primary side flow path and the secondary side flow path has a substantially annular shape, a substantially frame shape, a substantially arc shape, a substantially U shape, and a substantially C shape. 4. The outer side of the primary side flow path and the secondary side flow path is surrounded and configured to be substantially U-shaped or substantially V-shaped. The faucet described in 1. The faucet body includes a first cylindrical portion and a second cylindrical portion that is loosely inserted into the first cylindrical portion,
One of the primary side flow path and the secondary side flow path is configured to include an internal space of the second cylindrical portion, and the other of the primary side flow path and the secondary side flow path. The water faucet according to claim 3, wherein the water faucet includes a space between the first cylindrical portion and the second cylindrical portion.   The faucet according to any one of claims 1 to 5, wherein the on-off valve is a sliding valve including a fixed disk and a movable disk.

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