Saddle-type water splitter valve

Abstract

To provide a saddle-type water distribution valve that can simultaneously prevent displacement of the valve body during earthquakes and improve ease of installation during drilling. [Solution] The saddle-type water tap 100 comprises a water tap body 1 to which a water supply pipe is connected, a saddle 2 fixed to the outer circumference of a water distribution pipe P and having a through hole 2c into which a cylindrical portion 1c formed in the water tap body 1 is rotatably inserted, a retaining member 4 installed on the outer circumference of the cylindrical portion 1c on the water distribution pipe side of the saddle 2, and a restricting member 5 that restricts the relative rotation between the saddle 2 and the water tap body 1. The water tap body 1 has a projection 1d on the outer circumference of the cylindrical portion 1c, and the peripheral edge 2d of the through hole 2c is sandwiched between the projection 1d and the retaining member 4. The restricting member 5 is movable between a restricting position that engages across the peripheral edge 2d of the through hole 2c and the projection 1d, and an allowable position that allows relative rotation between the peripheral edge 2d of the through hole 2c and the projection 1d.

Description

Technical Field

[0001] The present invention relates to a saddle-type water distribution faucet installed at a location where a water supply pipe branches from a water distribution pipe such as a main water pipe.

Background Art

[0002] The saddle-type water distribution faucet supplies water from the water distribution pipe such as the main water pipe to each house etc. by connecting a joint etc. to the water supply pipe connection part of the saddle-type water distribution faucet.

[0003] In recent years, earthquakes have occurred frequently. When the water distribution pipe moves during an earthquake, the saddle-type water distribution faucet may move from the water distribution pipe and shift to the outside of the water stop member (saddle mounting gasket) that covered the hole drilled in the water distribution pipe, resulting in a risk of leakage.

[0004] Also, during an earthquake, a load is applied to the water supply pipe, so there is a risk that the water supply pipe connected to the saddle-type water distribution faucet may be damaged or displaced, resulting in leakage. As a means for suppressing leakage by making the water distribution faucet body, saddle, etc. rotatable or preventing rotation during such an earthquake, for example, a saddle-type water distribution faucet described in Patent Document 1 is known.

[0005] The earthquake-resistant saddle water distribution faucet described in Patent Document 1 attaches the water distribution faucet to the upper saddle rotatably by screwing the upper saddle with the attachment port of the water distribution faucet and the tightening nut. With this configuration, when there is ground movement due to an earthquake or the like, the saddle water distribution faucet relieves stress by the rotation of the attachment port part, preventing the attachment part etc. from being destroyed.

[0006] Generally, in a saddle-type water distribution faucet, after attaching the saddle-type water distribution faucet to the water distribution pipe, drilling work for water supply and core insertion work for rust suppression of the hole part are performed. Note that the earthquake-resistant saddle water distribution faucet described in Patent Document 1 does not mention a structure that does not rotate the water distribution faucet.

Prior Art Documents

Patent Documents

[0007] [Patent Document 1] Japanese Patent Application Publication No. 11-230461 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] The saddle-type water splitter described in Patent Document 1 is configured so that the water splitter can rotate relative to the upper saddle. When a rotational load is applied due to an earthquake, the mounting port rotates to relieve the stress, making it less susceptible to the effects of earthquakes. However, the saddle-type water splitter described in Patent Document 1 may cause the water splitter to rotate during installation, potentially complicating the installation process.

[0009] This invention was created to solve these problems, and its objective is to provide a saddle-type water tap that can simultaneously prevent displacement of the tap body during earthquakes and improve workability during drilling. [Means for solving the problem]

[0010] To solve the aforementioned problems, the present invention provides a saddle-type branch valve comprising: a branch valve body to which a water supply pipe is connected; a saddle fixed to the outer circumference of a water distribution pipe and having a through hole into which a cylindrical portion formed in the branch valve body is rotatably inserted; a retaining member installed on the outer circumference of the cylindrical portion on the water distribution pipe side of the saddle; and a restricting member that restricts the relative rotation between the saddle and the branch valve body, wherein the branch valve body has a projection on the outer circumference of the cylindrical portion, the peripheral edge of the through hole is sandwiched between the projection and the retaining member, and the restricting member is movable between a restricting position that engages across the peripheral edge of the through hole and the projection and a permissible position that allows relative rotation between the peripheral edge of the through hole and the projection. [Effects of the Invention]

[0011] The saddle-type water splitter valve of the present invention can achieve both the prevention of displacement of the water splitter valve body during earthquakes and improved workability during drilling. [Brief explanation of the drawing]

[0012] [Figure 1] This is a front view showing a partial cross-section of a saddle-type water tap according to an embodiment of the present invention. [Figure 2] This is a right side view showing a partial cross-section of a saddle-type water tap. [Figure 3] This is a plan view of a saddle-type water splitter valve, showing the range of rotation of the valve body. [Figure 4] This is a cross-sectional view taken along line IV-IV in Figure 1. [Figure 5A] This is an enlarged longitudinal cross-sectional view of the main part showing the installation state of the regulating member during drilling. [Figure 5B] This is an enlarged longitudinal cross-sectional view of the main part showing the installation state when the regulating member is pushed into the pin insertion hole after drilling is complete. [Figure 5C] This is an enlarged longitudinal cross-sectional view of a key part showing the state when a rotational load is applied to the water distribution valve body against the saddle due to an earthquake or other event, causing the water distribution valve body to rotate. [Figure 6A] This figure shows a first modified example of a saddle-type water tap according to an embodiment of the present invention, and is an enlarged longitudinal cross-sectional view of the main part showing the installation state of the regulating member during drilling. [Figure 6B] This figure shows a first modified example of a saddle-type water tap according to an embodiment of the present invention, and is an enlarged plan view of the main part showing the state when the retaining member is removed. [Figure 6C] This figure shows a first modified example of a saddle-type water tap according to an embodiment of the present invention, and is an enlarged longitudinal cross-sectional view of the main part showing the state when the retaining member has been removed. [Figure 6D] This figure shows a first modified example of a saddle-type water tap according to an embodiment of the present invention, and is an enlarged longitudinal cross-sectional view of the main part showing the installed state when the regulating member is pushed into the pin insertion hole. [Figure 7] This figure shows a second modified example of a saddle-type water tap according to an embodiment of the present invention, and is a schematic enlarged longitudinal cross-sectional view showing the regulating member. [Figure 8]It is a schematic enlarged longitudinal sectional view showing a regulating member, and is a view showing a third modification of the saddle-type water faucet according to an embodiment of the present invention. [Figure 9A] It is a view showing a fourth modification of the saddle-type water faucet according to an embodiment of the present invention, and is a main part enlarged longitudinal sectional view showing the installation state of the regulating member during drilling. [Figure 9B] It is a view showing a fourth modification of the saddle-type water faucet according to an embodiment of the present invention, and is a main part enlarged cross-sectional view showing the state when the holding member is removed. [Figure 9C] It is a view showing a fourth modification of the saddle-type water faucet according to an embodiment of the present invention, and is a main part enlarged longitudinal sectional view showing the state when the holding member is removed. [Figure 10] It is a view showing a fifth modification of the saddle-type water faucet according to an embodiment of the present invention, and is a main part enlarged longitudinal sectional view showing the state when the holding member is removed.

Embodiments for Carrying Out the Invention

[0013] The saddle-type water faucet 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5C. When explaining the directions, for the sake of convenience, the water faucet body 1 side shown in FIG. 1 is the upper side, the water distribution pipe P side is the lower side, the pair of bolt B and nut N sides are the left and right sides, and the axial direction of the water distribution pipe P is the front and rear sides. Note that the saddle-type water faucet 100 is formed in a bilaterally symmetric shape as a whole except for the water supply pipe connection portion 1e of the water faucet body 1 and the plug rod 13. Therefore, mainly one side on the left and right will be described, and the description of the other side will be omitted as appropriate. Also, the same components are denoted by the same reference numerals and their description is omitted.

[0014] ≪Saddle-Type Water Faucet≫ The saddle-type water faucet 100 shown in FIG. 1 or FIG. 2 is a water faucet used for branching a water supply pipe (not shown) for supplying water from a metal water distribution pipe P such as a main water pipe to each house or the like. The saddle-type water faucet 100 includes a water faucet body 1, a saddle 2, a band 3, a retaining member 4, a regulating member 5, a core 7, a saddle mounting gasket 9, an O-ring O1, bolts B, and nuts N.

[0015] Furthermore, the saddle-type branch valve 100 includes a water shut-off mechanism 10 provided on the branch valve body 1, a saddle mechanism 20 for attaching the saddle 2 and band 3 around the water distribution pipe P, and a rotation control mechanism 60 that rotates when a load exceeding a predetermined amount is applied between the branch valve body 1 and the saddle 2 in the rotation direction F (see Figure 3). The saddle-type branch valve 100 is used with its size and shape appropriately changed to match the material and diameter of the water distribution pipe P.

[0016] The saddle-type water tap 100 is attached to the outer circumference of the water pipe P by inserting bolt B through the bolt insertion hole 2g in the flange portion 2b of the saddle 2 and the bolt insertion hole 3c in the flange portion 3b of the band 3 and tightening nut N.

[0017] ≪Water distribution valve body≫ As shown in Figure 1, the water tap body 1 is a housing that forms the outer case of the water shut-off mechanism 10. The water tap body 1 has a vertical hole 1a and a horizontal hole 1b, and is made of a hollow metal member such as bronze that is formed in a roughly cross shape when viewed from the front. The water tap body 1 has a vertical hole 1a, a horizontal hole 1b, a cylindrical part 1c, a projection 1d, a water supply pipe connection part 1e, an O-ring installation groove 1f, a core insertion hole 1g, a threaded part 1h for connecting a retaining member, and a regulating member installation hole 1i. There is a gap between the cylindrical part 1c of the water tap body 1 and the through hole 2c of the saddle 2. For this reason, when the regulating member 5 is not present, the water tap body 1 is positioned to rotate relative to the saddle 2.

[0018] The water-stopping mechanism 10 is a device for temporarily or completely stopping the flow of water. The water-stopping mechanism 10 consists of a vertical hole 1a, a horizontal hole 1b, a ball valve 12 positioned in the center of the vertical hole 1a and the horizontal hole 1b, and a stopper rod 13 provided at the right end of the horizontal hole 1b.

[0019] The vertical hole 1a is formed to penetrate vertically along the axis of the water distribution valve body 1. A male threaded portion 1k for screwing on the cap 11 is formed on the outer circumference of the upper opening of the vertical hole 1a. A cylindrical portion 1c is formed on the lower side of the vertical hole 1a.

[0020] Furthermore, when drilling a hole Pa in the water pipe P for attaching the core 7, a drilling machine (not shown) is used. The drilling machine (not shown) is inserted from the upper opening into the vertical hole 1a of the saddle-type branch valve 100 attached to the water pipe P by fastening the saddle mechanism 20 shown in Figure 1 to the water pipe P. The drilling machine (not shown) then drills a hole Pa in the water pipe P.

[0021] The horizontal hole 1b is formed perpendicular to the vertical hole 1a, penetrating the central part of the water distribution valve body 1 in the left-right direction. A water supply pipe connection part 1e is formed on the outside of the left end of the horizontal hole 1b. A stopper rod 13 connected to the ball valve 12 is attached to the right end of the horizontal hole 1b.

[0022] As shown in Figure 1, the cylindrical portion 1c is a cylindrical projection formed in the center of the lower end of the water distribution valve body 1. The upper part of the cylindrical portion 1c communicates with the vertical hole 1a inside the water distribution valve body 1. A core insertion hole 1g is formed in the lower part of the cylindrical portion 1c. A projection 1d, an O-ring installation groove 1f, a threaded portion 1h for connecting the retaining member, and a gasket engagement portion 1j are formed on the outer circumferential surface of the cylindrical portion 1c.

[0023] As shown in Figures 2 and 4, the projection 1d is a projection for installing the regulating member 5. The projection 1d consists of, for example, a semicircular, flat flange portion formed to protrude from the upper outer circumference of the cylindrical portion 1c in a longitudinal cross-section. The lower surface of the projection 1d is positioned opposite the upper end surface 2e of the saddle 2 with a spacer SP interposed therebetween. The projection 1d has a regulating member installation hole 1i for inserting the regulating member 5. Furthermore, the projection 1d may be any projection that protrudes from the upper outer circumference of the cylindrical portion 1c and has a regulating member installation hole 1i, and is not limited to a semicircular projection as shown in Figure 4.

[0024] As shown in Figure 1, the water supply pipe connection part 1e is a part for attaching a water supply pipe (not shown) to the branch valve body 1. The water supply pipe connection part 1e consists of a male threaded portion to which a water supply branch pipe fitting (not shown) for connecting the water supply pipe (not shown) is screwed.

[0025] As shown in Figures 5A and 5B, the O-ring installation groove 1f is the installation area where the O-ring O1 for preventing water leakage is installed. The O-ring installation groove 1f consists of an annular groove recessed at a position opposite the through hole 2c on the outer surface of the cylindrical portion 1c.

[0026] As shown in Figures 1 and 2, the core insertion hole 1g is the portion into which the upper outer circumferential surface of the cylindrical core 7 is inserted. The core insertion hole 1g is formed by the lower end of the inner circumferential surface of the cylindrical portion 1c.

[0027] As shown in Figures 1 and 5A, the threaded portion 1h for connecting the retaining member is a male threaded portion for connecting the water tap body 1 to the retaining member 4 by screwing it into the female threaded portion 4a formed on the retaining member 4. The threaded portion 1h for connecting the retaining member is formed at the lower end of the outer surface of the cylindrical portion 1c.

[0028] As shown in Figures 5A and 5B, the regulating member installation hole 1i consists of an insertion hole into which the fragile portion 52 and the large-diameter portion 53 of the regulating member 5 are inserted so as to be movable in the vertical direction. As shown in Figure 4, the regulating member installation hole 1i is formed as a semicircular projection 1d.

[0029] As shown in Figure 1, the gasket engagement portion 1j is positioned to fit the annular saddle mounting gasket 9 onto its outer surface and holds the inner circumference 9a of the saddle mounting gasket 9. The gasket engagement portion 1j is formed at the lower end of the cylindrical portion 1c in a stepped shape with a smaller diameter than the threaded portion 1h for connecting the retaining member.

[0030] ≪Saddle Mechanism≫ As shown in Figure 1, the saddle mechanism 20 is a mechanism for attaching the saddle 2 and the band 3 around the water pipe P. The saddle mechanism 20 is composed of the saddle 2, the band 3, the bolt B, the nut N, the upper insulator 91, the lower insulator 92, the flat washer 93, and the insulator guide 94. The saddle mechanism 20 is constructed by inserting the bolt B through the bolt insertion hole 3c in the flange portion 3b of the band 3 and the bolt insertion hole 2g in the flange portion 2b of the saddle 2, and screwing it with the nut N on the tip side of the bolt B.

[0031] ≪Saddle≫ As shown in Figure 1, the saddle 2 is the upper half of the water distribution pipe P, positioned on the outer circumference of the water distribution pipe P to embrace its upper outer circumference and to be fixed to the water distribution pipe P. The saddle 2 is attached to the lower end of the water distribution valve body 1. The saddle 2 has an embracing portion 2a, a pair of left and right flange portions 2b with bolt insertion holes 2g formed therein, a through hole 2c, a peripheral edge portion 2d, a regulating member insertion hole 2f, and a bolt insertion hole 2g. The saddle 2 is made of a metal member such as cast iron or copper alloy, which is strip-shaped and extends in the left-right direction when viewed from above. The saddle 2 has a through hole 2c in the center and bolt insertion holes 2g at both the left and right ends. When viewed from the front, the saddle 2 is formed in a roughly Ω shape, with the central embracing portion 2a formed in an arc shape and the flange portions 2b at both ends formed in a flat plate shape.

[0032] The gripping portion 2a is the part that grips the water pipe P from one side (the upper side). When viewed from the front, the gripping portion 2a is formed in an arc shape. A gasket mounting recess 2i is formed at the lower central side of the gripping portion 2a into which the saddle mounting gasket 9 is fitted from below. The flange portion 2b is a pair of left and right flat plate-shaped portions that protrude outward from both the left and right ends of the gripping portion 2a. Bolt insertion holes 2g are formed in the left and right flange portions 2b, into which the male threaded portion Bc of the bolt B is inserted.

[0033] The through-hole 2c is a support hole into which the cylindrical portion 1c of the water tap body 1 is rotatably inserted. The O-ring O1 provided in the O-ring installation groove 1f of the water tap body 1 is positioned in contact with the inner surface of the through-hole 2c. As a result, the O-ring O1 provided in the opposing O-ring installation groove 1f is in close contact with the through-hole 2c, sealing the space between the cylindrical portion 1c of the water tap body 1 and the saddle 2. The through-hole 2c is formed in the center of the holding portion 2a.

[0034] The peripheral portion 2d is the peripheral part of the through hole 2c formed in the center of the saddle 2. When viewed from the side, the peripheral portion 2d is formed at the upper central end of the saddle 2. The peripheral portion 2d of the through hole 2c is sandwiched between the projection 1d and the retaining member 4. A spacer SP is placed between the projection 1d and the peripheral portion 2d to assist the relative rotation of the water distribution valve body 1 and the saddle 2.

[0035] The upper end surface 2e is an annular, flat surface formed at the upper end of the central part of the saddle 2. A spacer SP is placed on the upper end surface 2e. As shown in Figures 2 and 5A, a regulating member insertion hole 2f, which is recessed in shape when viewed in a longitudinal section, is formed on the upper end surface 2e.

[0036] As shown in Figures 5A and 5B, the restricting member insertion hole 2f is a hole formed in a recessed shape in a longitudinal cross-section into which the large-diameter portion 53 of the restricting member 5 is inserted. The restricting member insertion hole 2f is formed at one location on the upper end surface 2e of the saddle 2. Note that there may be multiple restricting member insertion holes 2f.

[0037] Spacer The spacer SP is positioned between the lower surface of the projection 1d of the water distribution valve body 1 and the upper end surface 2e of the saddle 2, and is a component that assists in the rotation of the water distribution valve body 1 during an earthquake, making it easier to rotate. The spacer SP consists of an annular flat plate member. The spacer SP has a regulating member insertion hole SPa formed in it at a position that matches the regulating member installation hole 1i, with the same inner diameter d1 as the regulating member installation hole 1i.

[0038] ≪Band≫ As shown in Figure 1, the band 3 is positioned opposite the saddle 2 with the water pipe P in between, and is the lower half for holding the water pipe P together with the saddle 2. The band 3 has an arc-shaped holding portion 3a when viewed from the front, a pair of flange portions 3b projecting outward from both the left and right ends of the holding portion 3a, and bolt insertion holes 3c formed in each of the pair of flange portions 3b. The band 3 is formed in a shape that is substantially symmetrical with respect to the saddle 2 when viewed from the front. The band 3 is formed in a substantially inverted Ω shape when viewed from the front, with the central holding portion 3a formed in an arc shape and the flange portions 3b at both ends formed in a flat plate shape. The band 3 is made of a strip of metal extending in the left-right direction when viewed from above, and has bolt insertion holes 3c at both the left and right ends.

[0039] ≪Retaining component≫ As shown in Figures 1 and 2, the retaining member 4 is a member that prevents the water tap body 1 from detaching from the saddle 2. The retaining member 4 consists of a rectangular annular member in vertical cross-section that is fitted into a stepped portion 2h formed at the lower end of the through hole 2c of the saddle 2. The retaining member 4 is installed on the outer circumference of the cylindrical portion 1c on the water pipe side of the saddle 2. The inner surface of the retaining member 4 has a female threaded portion 4a that screws into the threaded portion 1h for connecting the retaining member of the water tap body 1. The female threaded portion 4a is a threaded portion for connecting the water tap body 1 and the saddle 2 by screwing it into the threaded portion 1h for connecting the retaining member of the cylindrical portion 1c.

[0040] ≪Regulatory Components≫ As shown in Figures 5A to 5C, the restricting member 5 is a member that restricts the relative rotation between the saddle 2 and the water tap body 1. The restricting member 5 consists of a cylindrical metal member with an annular groove (with a neck) that is inserted across the peripheral edge 2d and projection 1d of the through hole 2c. The restricting member 5 is inserted into the restricting member installation hole 1i, the restricting member insertion hole SPa, and the restricting member insertion hole 2f. The restricting member installation hole 1i, the restricting member insertion hole SPa, and the restricting member insertion hole 2f are formed at appropriate positions so that the threaded portion 1h for connecting the retaining member of the water tap body 1 can be rotated by 45° or more in the rotational direction to the female threaded portion 4a.

[0041] The restricting member 5 is movable between a restricting position (see Figure 5A) in which it engages across the peripheral edge 2d of the through hole 2c and the projection 1d, and a permissible position (see Figure 5B) in which relative rotation between the peripheral edge 2d of the through hole 2c and the projection 1d is permitted.

[0042] The restricted position refers to the state in which the large-diameter portion 53 of the restricting member 5 is inserted into the restricting member installation hole 1i, the restricting member insertion hole SPa, and the restricting member insertion hole 2f, as shown in Figure 5A, so that the water tap body 1 and the saddle 2 cannot rotate relative to each other. When the restricting member 5 is positioned in the restricted position, the large-diameter portion 53 is positioned at the boundary between the peripheral edge portion 2d and the projection portion 1d of the through hole 2c.

[0043] The permissible position is the position in which the weak portion 52 of the regulating member 5 is positioned within the regulating member installation hole 1i and the regulating member insertion hole SPa, and the water tap body 1 and the saddle 2 can rotate relative to each other with a rotational force greater than or equal to a predetermined value, as shown in Figures 5B and 5C. As shown in Figure 5B, when the regulating member 5 is positioned in the permissible position, the weak portion 52 is positioned at the boundary between the peripheral edge 2d and the projection 1d of the through hole 2c.

[0044] The restricting member 5 may consist of one piece, for example, but it may also consist of multiple pieces (for example, two pieces). Below, we will explain an example of a single restricting member 5. The rotation control mechanism 60 will be explained later.

[0045] As shown in Figure 5A, the restricting member 5 consists of a pin 50 integrally formed with a head 51 formed at the upper end of the restricting member 5, a weak portion 52 formed below the head 51, and a large-diameter portion 53 formed below the weak portion 52.

[0046] <Pin> As shown in Figure 5A, the pin 50 is inserted into the regulating member installation hole 1i, the regulating member insertion hole SPa, and the regulating member insertion hole 2f, which are positioned downward from the upper surface of the annular projection 1d. During drilling and core insertion, the large-diameter portion 53 of the pin 50 is press-fitted into the regulating member installation hole 1i, fixing the water tap body 1, the spacer SP, and the saddle 2. Therefore, the pin 50 makes drilling and core insertion easier.

[0047] As shown in Figure 5B, during drilling and after core insertion, the pin 50 is positioned with its weak portion 52 in the regulating member installation hole 1i and the regulating member insertion hole SPa, and its large-diameter portion 53 in the regulating member insertion hole 2f. By positioning the pin 50 in this way, as shown in Figure 3, when an earthquake occurs and a load exceeding a predetermined amount is applied in the rotational direction F, the pin 50 will break, causing the water tap body 1 to rotate and absorb the load, thereby preventing the saddle-type water tap 100 from shifting position.

[0048] <Head> The head portion 51 shown in Figure 5A is the part used to grip the pin 50 when inserting it into the regulating member installation hole 1i, etc. The width D1 of the head portion 51 is formed to be larger than the inner diameter d1 of the regulating member installation hole 1i. Therefore, as shown in Figure 5B, even when pushed in, the head portion 51 abuts against the periphery of the regulating member installation hole 1i and does not enter the regulating member installation hole 1i. The inner diameter d1 of the regulating member installation hole 1i is the same as the inner diameter of the regulating member insertion hole SPa.

[0049] <Vulnerable parts> As shown in Figure 5A, the weak portion 52 is formed to be thinner than the head portion 51 and the large diameter portion 53. In other words, the width D2 of the weak portion 52 is formed to be smaller than the width D1 of the head portion 51 and the widths D3 and D4 of the large diameter portion 53 in order to weaken the strength of the weak portion 52. Therefore, as shown in Figure 5C, the weak portion 52 is configured to break or break when a load exceeding a predetermined value is applied in the rotational direction F, causing the water tap body 1 to rotate. The predetermined load refers to a load greater than or equal to the strength required to withstand drilling and core insertion.

[0050] Furthermore, as shown in Figure 5B, when the fragile portion 52 is placed within the regulating member installation hole 1i, it is preferable that it has sufficient strength to prevent the water distribution valve body 1 from rotating when a load less than a predetermined amount is applied between the projection 1d and the saddle 2 in the rotational direction F.

[0051] <Large diameter section> As shown in Figure 5A, the large-diameter portion 53 is formed with an upper width D3 (see Figure 5B) that is wider than the width D2 of the weak portion 52. Therefore, when the large-diameter portion 53 is positioned from the regulating member installation hole 1i to the regulating member insertion hole 2f during drilling and core insertion, it has the strength to withstand drilling by a drilling machine (not shown) and the load from the installation of the core 7. The large-diameter portion 53 provided in the regulating member installation hole 1i of the projection 1d restricts the rotation of the water distribution valve body 1 when a load less than a predetermined amount is applied in the rotational direction between the projection 1d and the saddle 2.

[0052] As shown in Figure 5A, the inner diameter d2 of the restricting member insertion hole 2f into which the large-diameter portion 53 fits is formed to be larger than the inner diameter d1 of the restricting member installation hole 1i and the restricting member insertion hole SPa. As shown in Figure 5B, the large-diameter portion 53 is formed such that its upper width D3 fits into the restricting member insertion hole 2f, and its lower width D4 is loosely fitted into the restricting member insertion hole 2f. Therefore, since the lower end of the large-diameter portion 53 is narrower, it is easy to insert into the restricting member insertion hole 2f. In addition, the largest part of the width D3 is locked into the groove in the restricting member installation hole 1i, preventing the large-diameter portion 53 from accidentally entering the restricting member insertion hole 2f.

[0053] The regulating member 5 and the water tap body 1 configured in this way are designed so that they do not rotate when a weak load below a predetermined value is applied in the rotational direction F between the projection 1d and the saddle 2 during drilling or core installation. As shown in Figure 5C, when a load stronger than a predetermined value is applied in the rotational direction between the projection 1d and the peripheral edge 2d of the through hole 2c, the weak part 52 breaks, and the water tap body 1 rotates relative to the saddle 2.

[0054] ≪Rotation Control Mechanism≫ The rotation control mechanism 60 is a device that prevents damage or leakage of water from the water supply piping (joints, water supply pipes, stopcocks, etc.) caused by the saddle-equipped water tap 100 shifting from its position on the water distribution pipe P during an earthquake. As shown in Figures 1 and 3, the rotation control mechanism 60 is a rotation control device that causes the water tap body 1 to rotate relative to the saddle 2 when a load exceeding a predetermined value is applied in the rotational direction to the regulating member 5 that locks the water tap body 1 and the saddle 2.

[0055] As shown in Figure 5B, the rotation control mechanism 60 is configured to include a projection 1d on the water tap body 1 and a restricting member 5 that fixes the restricting member insertion hole 2f in the saddle 2. Therefore, as shown in Figure 5C, the water tap body 1 becomes rotatable relative to the saddle 2 if the restricting member 5 breaks or is destroyed.

[0056] The regulating member installation hole 1i is formed such that the fragile part 52 inserted into the regulating member installation hole 1i breaks, allowing the water distribution valve body 1 to rotate at least 45 degrees on one side relative to the saddle 2. In this configuration, the presence of the rotation control mechanism 60 ensures that, in the event of an earthquake or the like, if the water distribution valve body 1 rotates 45 degrees or more to one side in the rotational direction, the water supply piping can be adequately protected from the load in practical terms.

[0057] Furthermore, the water tap body 1 is screwed into the threaded portion 1h for connecting the retaining member with respect to the female threaded portion 4a of the retaining member 4, leaving a range of rotation of 45 degrees or more in the tightening direction. In this screwed state, the rotation of the water tap body 1 relative to the saddle 2 is restricted by the restricting member 5.

[0058] <core> As shown in Figure 1, the core 7 is a roughly cylindrical member that is installed inside the water distribution pipe P and in the core insertion hole 1g at the lower end of the cylindrical part 1c, and suppresses the shrinkage of the perforated hole Pa of the water distribution pipe P due to rust. The lower end of the core 7 is inserted into the perforated hole Pa, which is drilled by a drilling machine (not shown) inserted into the vertical hole 1a of the saddle-type water distribution valve 100. The upper end of the core 7 is installed inside the core insertion hole 1g. Note that the installation of the core 7 is optional.

[0059] <Saddle mounting gasket> As shown in Figure 1, the saddle mounting gasket 9 is a sealing member for preventing water leakage from the perforated hole Pa of the water pipe P. The saddle mounting gasket 9 has an inner circumference portion 9a that is fitted onto the gasket engagement portion 1j and a cylindrical portion 9b that is inserted into the gasket mounting recess 2i.

[0060] <Oリング> As shown in Figure 1, the O-ring O1 is a sealing member that prevents water from leaking out of the gap between the outer surface of the cylindrical portion 1c of the water tap body 1 and the inner surface of the through hole 2c of the saddle 2, and also prevents foreign matter from entering. Therefore, even if the water tap body 1 rotates relative to the saddle 2, the O-ring O1 prevents water from leaking out of the gap between the water tap body 1 and the saddle 2. The O-ring O1 consists of a rubber annular member that is attached to an O-ring installation groove 1f formed on the outer surface of the cylindrical portion 1c. While it is preferable for the O-ring O1 to be present in the saddle-type water splitter valve 100, it is not necessary as the saddle mounting gasket 9 provides waterproofing.

[0061] <Bolts and nuts> The bolt B and nut N shown in Figure 1 are a pair of left and right fastening members for connecting and fixing the saddle 2 and band 3 to the outer circumference of the water pipe P. The bolt B is inserted through the insulator guide 94, the lower insulator 92 fitted into the bolt insertion hole 3c of the band 3, and the upper insulator 91 fitted into the bolt insertion hole 2g of the saddle 2, and is screwed with the nut N with a flat washer 93 in between.

[0062] [Function of a saddle-type water tap] Next, with reference to Figures 1 to 5C, the operation of the saddle-type water tap 100 according to an embodiment of the present invention will be explained in accordance with the assembly procedure.

[0063] First, as shown in Figures 1 and 2, the O-ring O1 is attached to the O-ring installation groove 1f of the water distribution valve body 1. Next, the spacer SP is fitted onto the cylindrical portion 1c of the water distribution valve body 1 and positioned on the lower surface of the projection 1d. Then, the through hole 2c of the saddle 2 is fitted onto the cylindrical portion 1c from the lower side of the water distribution valve body 1.

[0064] The saddle-type water splitter valve 100 conforms to the Japan Water Works Association standard "JWWA B 117 Water Splitter Valves with Saddles for Water Supply," which stipulates that the saddle 2 and band 3 must be painted (epoxy resin powder coating). Since saddle 2 does not have a threaded section on its upper part, masking that was previously required for the threaded section is unnecessary. This reduces the effort required during painting.

[0065] Next, the retaining member 4 is fitted into the stepped portion 2h of the saddle 2, and the female threaded portion 4a of the retaining member 4 is screwed into the threaded portion 1h for connecting the retaining member. At that time, as shown in Figure 3, the water distribution valve body 1 is screwed in such a way that it rotates by 45° or more in the rotational direction. In this way, by fixing the retaining member 4 having a female threaded portion 4a to the saddle 2, it becomes unnecessary to thread the saddle 2. Furthermore, since the saddle 2 only needs to have a regulating member insertion hole 2f for installing the pin 50, it is less affected by changes in thickness due to painting, and the productivity of the saddle 2 can be improved.

[0066] Next, as shown in Figure 5A, the pin 50 is inserted into the regulating member installation hole 1i of the projection 1d, and the large-diameter portion 53 is positioned within the regulating member installation hole 1i, the regulating member insertion hole SPa, and the regulating member insertion hole 2f. By positioning the large-diameter portion 53 from the regulating member installation hole 1i of the water tap body 1 to the regulating member insertion hole 2f of the saddle, mutual rotation between the water tap body 1 and the saddle 2 can be suppressed. Therefore, the large-diameter portion 53 suppresses rotation between the water tap body 1 and the saddle 2 during drilling and core insertion, making drilling and core insertion easier.

[0067] After drilling and core insertion are complete, the regulating member 5 is positioned by pressing its head 51 against the bottom surface of the regulating member insertion hole 2f, as shown in Figure 5B. This positions the pin 50 with its weak portion 52 positioned within the regulating member installation hole 1i and the regulating member insertion hole SPa, and its large-diameter portion 53 retracted into the regulating member insertion hole 2f. With this, the pin 50 is installed.

[0068] As shown in Figure 5C, when the water distribution valve body 1 is installed, if a rotational load is applied due to an earthquake or the like, it rotates and damages the weak point 52 of the pin 50, thereby cushioning the load. In this way, the saddle-type water tap 100 has a weak point 52 of the pin 50 extending from the water tap body 1 to the saddle 2, so that when a load due to an earthquake or the like is applied to the water tap body 1, the load can be buffered by the weak point 52. For this reason, when a rotational load is applied due to an earthquake or the like, the pin 50 can suppress the displacement movement of the water tap body 1 and the water distribution pipe P caused by the earthquake, thereby preventing damage to the joint, water supply pipe, stopcock, etc.

[0069] As described above, the present invention, as shown in Figures 1, 2, 5A, or 5B, is a saddle-type branch valve 100 comprising: a branch valve body 1 to which a water supply pipe is connected; a saddle 2 fixed to the outer circumference of a water distribution pipe P, having a through hole 2c into which a cylindrical portion 1c formed in the branch valve body 1 is rotatably inserted; a retaining member 4 installed on the outer circumference of the cylindrical portion 1c on the water distribution pipe side of the saddle 2; and a restricting member 5 that restricts the relative rotation between the saddle 2 and the branch valve body 1. The branch valve body 1 has a projection 1d on the outer circumference of the cylindrical portion 1c, the peripheral edge 2d of the through hole 2c is sandwiched between the projection 1d and the retaining member 4, and the restricting member 5 is movable between a restricting position that engages across the peripheral edge 2d of the through hole 2c and the projection 1d, and an allowable position that allows relative rotation between the peripheral edge 2d of the through hole 2c and the projection 1d.

[0070] With this configuration, the saddle-type water tap 100A of the present invention can be held in place without rotating even when a load less than a predetermined amount is applied in the rotational direction between the water tap body 1 and the saddle 2, by positioning the regulating member 5 at the regulating position. Therefore, the saddle-type water tap 100A can be securely fixed by the regulating member 5 between the water tap body 1 and the saddle 2 when no earthquake occurs, when a small earthquake of less than the desired magnitude occurs, or during construction. Since the water tap body 1 does not rotate relative to the saddle 2 during construction, construction work such as drilling can be easily performed. The saddle-type water splitter valve 100A, by positioning the regulating member 5 in an allowable position, can cushion the load when a load exceeding a predetermined amount is applied between the water splitter valve body 1 and the saddle 2 in the rotational direction by rotating the water splitter valve body 1 relative to the saddle 2. Therefore, in the event of a large earthquake exceeding the desired size, the saddle-type water splitter valve 100 can prevent damage to the joint, water supply pipe, stopcock, etc., caused by the water splitter valve body 1 moving from its position on the water distribution pipe P due to the load from the earthquake. As a result, the saddle-type water splitter valve 100A can achieve both efficient prevention of displacement of the water splitter valve body during earthquakes and improved workability during drilling.

[0071] Furthermore, as shown in Figures 5A to 5C, the pin 50 has a large-diameter portion 53 and a weak portion 52 that is thinner than the large-diameter portion 53. When the pin 50 is positioned in the allowable position, the weak portion 52 is located at the boundary between the peripheral portion 2d of the through hole 2c and the projection 1d.

[0072] With this configuration, the pin 50 can rotate the water distribution valve body 1 when a load exceeding a predetermined amount is applied in the rotational direction between the water distribution valve body 1 and the saddle 2 during an earthquake, provided that the weak point 52 is in an acceptable position. Therefore, the pin 50 can buffer the load applied to the water distribution valve body 1 during an earthquake by breaking the weak point 52, thereby preventing damage to the joint, water supply pipe, stopcock, etc.

[0073] Furthermore, as shown in Figures 5A and 5B, a spacer SP is positioned between the projection 1d and the peripheral edge 2d to assist the relative rotation of the water distribution valve body 1 and the saddle 2.

[0074] In this configuration, the placement of a spacer SP between the projection 1d and the peripheral edge 2d assists in the relative rotation of the water tap body 1 and the saddle 2.

[0075] [First variation] Although the saddle-type water tap 100 according to this embodiment has been described in detail above with reference to Figures 1 to 5C, the present invention is not limited thereto and can be modified as appropriate without departing from the spirit of the invention.

[0076] Figure 6A is a diagram showing a first modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is an enlarged cross-sectional view of the main part showing the installation state of the regulating member 5A during drilling. Figure 6B is a diagram showing a first modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is a plan view of the main part showing the state when the retaining member 6 is removed. Figure 6C is a diagram showing a first modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is an enlarged cross-sectional view of the main part showing the state when the retaining member 6 is removed. Figure 6D is a diagram showing a first modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is an enlarged cross-sectional view of the main part showing the installation state when the regulating member 5A is pushed into the regulating member insertion hole 2f.

[0077] For example, the saddle-type water tap 100 of the embodiment (see Figure 2) may include a holding member 6 that holds the regulating member 5A in the regulated position, as shown in Figures 6A to 6D. Alternatively, the regulating member 5A may move from the regulated position to the permitted position by removing the holding member 6.

[0078] In this case, as shown in Figure 6A, the projection 1Ad of the water tap body 1A has a weak point installation hole 1Ai in which the weak point 52A of the regulating member 5A (pin 50A) is placed, and a large-diameter installation hole 1Al in which the large-diameter portion 53A can be placed. The inner diameter of the weak point installation hole 1Ai is formed to be slightly smaller than the outer diameter of the large-diameter portion 53A of the regulating member 5A. The large-diameter portion 53A of the regulating member 5A is pressed into the weak point installation hole 1Ai and passed through, allowing the large-diameter portion 53A to pass through to the large-diameter installation hole 1Al. The large-diameter portion 53A, which is placed in the large-diameter installation hole 1Al in this way, is locked to the weak point installation hole 1Ai even if an attempt is made to remove it from the large-diameter installation hole 1Al, thus preventing it from coming out of the large-diameter installation hole 1Al.

[0079] The restricting member 5A (pin 50A) differs from the restricting member 5 (pin 50) of the embodiment in that the large-diameter portion 53A is formed in a cylindrical shape with the same outer diameter from the top to the bottom. The weak portion 52A is a thin and relatively weak part, and its shape is not particularly limited as long as it does not break or break during drilling and core insertion. The large-diameter portion 53A is a thick and relatively strong part, and its shape is not particularly limited.

[0080] As shown in Figure 6A, the retaining member 6 is a member for maintaining the state in which the large diameter portion 53A is located within the large diameter portion installation hole 1Al, the regulating member insertion hole SPa, and the regulating member insertion hole 2f. The retaining member 6 consists of a tag such as a luggage tag, which is formed in a horizontally elongated, flat shape. As shown in Figure 6B, the retaining member 6 has a notched groove 61 that is inserted into the weak portion 52A of the regulating member 5A, and an engaging portion 62 that detachably engages with the weak portion 52A. The notched groove 61 is formed as a notch in the center of the short side of the rectangular retaining member 6. The engaging portion 62 consists of a roughly C-shaped hole formed at the far end of the notched groove 61.

[0081] As shown in Figure 6A, the retaining member 6 engages its engaging portion 62 with the fragile portion 52A during drilling and core insertion, thereby maintaining the large-diameter portion 53A within the large-diameter portion installation hole 1Al, the regulating member insertion hole SPa, and the regulating member insertion hole 2f. By attaching the retaining member 6 to the fragile portion 52A and maintaining the state in which the regulating member 5A is raised, the rotation of the water distribution valve body 1 and the saddle 2 can be suppressed by the large-diameter portion 53A during drilling and core insertion.

[0082] As shown in Figure 6C, after drilling, the retaining member 6 is removed from the restricting member 5A. Once the retaining member 6 is removed, as shown in Figure 6D, the restricting member 5A pushes its head 51A toward the saddle 2 (downward) and immerses its large-diameter portion 53A into the restricting member insertion hole 2f. This completes the installation of the restricting member 5A.

[0083] In the state shown in Figure 6D, when a load exceeding a predetermined value is applied to the branch valve body 1 in the rotational direction during an earthquake, the branch valve body 1 rotates, causing the vulnerable part 52A to break, and the rotation of the branch valve body 1 provides cushioning. This prevents the saddle-type water tap 100A from being damaged or shifting relative to the water pipe P during an earthquake.

[0084] With this configuration, as shown in Figure 6A, the saddle-type water tap 100A is equipped with a holding member 6 that holds the regulating member 5A in the regulating position, thereby holding the water tap body 1 and the saddle 2 in a state where they cannot rotate relative to each other. Therefore, the holding member 6 can hold the water tap body 1 and the saddle 2 in place so that they do not move, making it easier to perform drilling work during drilling and to install the core 7 during core insertion. Furthermore, the restricting member 5A can be moved from the restricted position to the permissible position by removing the holding member 6, allowing the water tap body 1 and the saddle 2 to rotate relative to each other. Therefore, if a load exceeding a predetermined value is applied to the saddle-equipped water tap 100A during an earthquake, the water tap body 1 will rotate, preventing the saddle-equipped water tap 100A from being damaged or shifting relative to the water pipe P.

[0085] [Second variation] Figure 7 shows a second modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is a schematic enlarged cross-sectional view showing the regulating member 5B.

[0086] Furthermore, as shown in Figure 7, the restricting member 5B may be a pin 50B inserted across the peripheral edge 2d of the through hole 2c and the projection 1d. The pin 50B may have a high-strength portion 53B and a low-strength portion 52B which is weaker than the high-strength portion 53B. When the restricting member 5B is positioned in the allowable position, the low-strength portion 52B may be positioned at the boundary between the peripheral edge 2d of the through hole 2c and the projection 1d.

[0087] In this case, the pin 50B (regulating member 5B) has a head 51B, a thin low-strength portion 52B integrally formed with the head 51B, and a high-strength portion 53B that is thicker and stronger than the low-strength portion 52B and connected to the lower end of the low-strength portion 52B. A male threaded portion 52Ba is formed at the lower end of the low-strength portion 52B. A female threaded portion 53Ba is formed on the upper surface of the high-strength portion 53B for screwing the male threaded portion 52Ba into. The inner diameter of the opening edge of the regulating member installation hole 1i is formed to be slightly smaller than the outer diameter of the high-strength portion 53B of the regulating member 5B.

[0088] In this configuration, the pin 50B has a low-strength portion 52B that is weaker than the high-strength portion 53B. The pin 50B can rotate the water distribution valve body 1 when a load exceeding a predetermined amount is applied in the rotational direction between the water distribution valve body 1 and the saddle 2. Therefore, the pin 50B can buffer the load applied to the water distribution valve body 1 during an earthquake by destroying the low-strength portion 52B, thereby preventing the saddle-equipped water distribution valve 100B from being damaged or shifting relative to the water distribution pipe P.

[0089] [Third variation] Figure 8 shows a third modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is a schematic enlarged cross-sectional view showing the regulating member 5C.

[0090] Furthermore, as shown in Figure 8, the restricting member 5C may be a pin 50C inserted across the peripheral edge 2d of the through hole 2c and the projection 1d. The pin 50C may have a high-strength metal portion 53C and a low-strength resin portion 52C with lower strength than the high-strength portion 53C. When the restricting member 5C is positioned in the allowable position, the low-strength portion 52C may be positioned at the boundary between the peripheral edge 2d of the through hole 2c and the projection 1d.

[0091] In this case, the pin 50C has a head 51C, a low-strength portion 52C integrally formed of resin on the head 51C, and a high-strength portion 53C made of metal that is thicker and stronger than the low-strength portion 52C. A connecting projection 52Ca is integrally formed at the lower end of the low-strength portion 52C. The high-strength portion 53C has a connecting hole 53Ca formed from the center of the upper surface to the lower surface for inserting the projection 52Ca. Furthermore, the inner diameter of the opening edge of the regulating member installation hole 1i is formed to be slightly smaller than the outer diameter of the high-strength portion 53C of the regulating member 5C.

[0092] In this configuration, the pin 50C (regulating member 5C) has a low-strength portion 52C that is weaker than the high-strength portion 53C. If a load exceeding a predetermined amount is applied in the rotational direction between the water tap body 1 and the saddle 2, the water tap body 1 can be rotated. Therefore, the pin 50C can cushion the load applied to the water tap body 1 during an earthquake by the low-strength portion 52C breaking, thereby preventing the saddle-equipped water tap 100C from being damaged or shifting relative to the water pipe P.

[0093] [Fourth variation] Figure 9A is a diagram showing a fourth modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is an enlarged cross-sectional view of the main part showing the installation state of the regulating member 5D during drilling. Figure 9B is a diagram showing a fourth modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is a plan view of the main part showing the state when the retaining member 6D is removed. Figure 9C is a diagram showing a fourth modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is an enlarged cross-sectional view of the main part showing the state when the retaining member 6D is removed.

[0094] Furthermore, as shown in Figures 9A to 9C, the saddle-type water tap 100D may also include a retaining member 6D that holds the regulating member 5D (pin 50D) in the regulated position. The regulating member 5D may also be configured such that, by removing the retaining member 6D, it descends from the regulated position to the allowable position due to its own weight and automatically retracts into the regulating member insertion hole 2f.

[0095] In this case, as shown in Figures 9A and 9C, the restricting member 5D (pin 50D) may consist only of a cylindrical large-diameter portion 53D with the same outer diameter from top to bottom. In other words, the pin 50D does not need to have a head 51 and a weak portion 52 as long as it has a large-diameter portion 53D. The pin 50D only needs to be able to descend from the restricted position to the allowable position by its own weight, and its shape is not particularly limited.

[0096] The lower surface of the projection 1Dd of the water distribution valve body 1D is recessed with a regulating member placement hole 1Dl, which allows the upper part of the regulating member 5D (pin 50D) to be placed. The saddle 2D has a pin insertion hole 2Df recessed in its upper end surface 2De, and a retaining member insertion hole 2Dj that penetrates from the inner bottom of the pin insertion hole 2Df to the side surface of the saddle 2D.

[0097] The pin insertion hole 2Df is a hole into which the upper part of the pin 50D is inserted so as to be able to move up and down. The pin insertion hole 2Df is formed on the upper end surface 2De of the saddle 2D at a position that coincides with the regulating member placement hole 1Dl and the regulating member insertion hole SPa. As shown in Figures 9A and 9C, the retaining member insertion hole 2Dj is a rectangular lateral hole in side view into which the retaining member 6D is inserted so as to be able to be inserted and removed.

[0098] As shown in Figure 9A, the retaining member 6D is a member for maintaining the state in which the pin 50D is located within the regulating member placement hole 1Dl, the regulating member insertion hole SPa, and the pin insertion hole 2Df. As shown in Figures 9A to 9C, the retaining member 6D consists of a rectangular, flat plate-shaped member that is elongated in the front-to-back direction. The retaining member 6D has a locking portion 6Da formed at its tip and convex portions 6Db formed at the center of its upper and lower surfaces.

[0099] As shown in Figures 9A to 9C, the locking portion 6Da is a projection that allows a finger to hook onto the tip of the retaining member 6D, which is inserted into the retaining member insertion hole 2Dj, making it easier to pull the retaining member 6D out of the retaining member insertion hole 2Dj. The protrusion 6Db is a support portion that contacts the ceiling and bottom surfaces of the retaining member insertion hole 2Dj when the retaining member 6D is inserted into the retaining member insertion hole 2Dj, thereby supporting the retaining member 6 without rattling.

[0100] In this configuration, the restricting member 5D (pin 50D) is formed from a single component consisting only of a cylindrical large-diameter portion 53D. Therefore, the restricting member 5D can be easily manufactured by simplifying its part shape, and the number of component parts can be reduced, thus lowering costs. Furthermore, when the retaining member 6D is pulled out of the retaining member insertion hole 2Dj, the pin 50D automatically descends from the restricted position to the permitted position due to its own weight, thus eliminating the need to manually press the pin 50D from the restricted position to the permitted position.

[0101] [Fifth variation] Figure 10 is a diagram showing a fifth modified example of the saddle-type water tap 100 according to an embodiment of the present invention, and is a plan view of the main part showing the state when the retaining member 6E is immersed in the pin insertion hole 2Df.

[0102] Furthermore, the saddle-type water tap 100D of the fourth modified example may be such that the pin 50E (regulating member 5E) is made of a permanent magnet, as shown in Figure 10, as in the saddle-type water tap 100E. The peripheral edge 2Dd of the saddle 2D may be formed of a magnetic material and have a pin insertion hole 2Df (regulating member insertion hole) into which the pin 50E (regulating member 5E) is inserted by the magnetic force of the pin 50E.

[0103] With this configuration, the pin 50E (regulating member 5E) is made of a permanent magnet, so when the retaining member 6D is pulled out from the retaining member insertion hole 2Dj, the magnetic force of the pin 50E attracts it to the inner bottom of the pin insertion hole 2Df (regulating member insertion hole) of the saddle 2D, and it moves from the regulated position to the permitted position.

[0104] [Other variations] For example, in the above embodiment, as shown in Figures 5A to 5C, the regulating member installation hole 1i provided in the projection 1d of the water tap body 1 was described as a through hole, but the regulating member installation hole 1i may also be a notched groove through which the pin 50 passes. [Explanation of symbols]

[0105] 1,1A,1D Water Distribution Valve Body 1c Cylindrical part 1d protrusion 2.2D Saddle 2c through hole 2d, 2Dd Peripheral area 2Df Pin insertion hole (regulating member insertion hole) 2f Restriction member insertion hole 4. Retaining member 5, 5A, 5B, 5C, 5D, 5E Regulating members 6, 6D, 6E Retaining member 50, 50A, 50B, 50C, 50D, 50E pins 52,52A Weak part 52B,52C Low strength part 53, 53A Large diameter section 53B,53C High strength part 100, 100A, 100B, 100C, 100D, 100E Water tap with saddle P water pipe SP Spacer

Claims

1. The branch valve body to which the water supply pipe is connected, The saddle, which is fixed to the outer circumference of the water distribution pipe, has a through hole into which a cylindrical portion formed in the water distribution valve body is rotatably inserted, A retaining member is installed on the outer circumference of the cylindrical portion on the water pipe side of the saddle, A restricting member that restricts the relative rotation between the saddle and the water distribution valve body, A saddle-type water tap equipped with, The water distribution valve body has a projection on the outer circumference of the cylindrical part, The peripheral edge of the through hole is sandwiched between the projection and the retaining member. The restricting member is movable between a restricting position that engages across the peripheral edge of the through hole and the projection, and a permissible position that allows relative rotation between the peripheral edge of the through hole and the projection. A water splitter valve with a saddle.

2. The regulating member is a pin inserted across the peripheral edge of the through hole and the projection, The pin has a high-strength portion and a low-strength portion that is less strong than the high-strength portion. When the regulating member is positioned in the permissible position, the low-strength portion is positioned at the boundary between the peripheral edge of the through hole and the projection. A saddle-type water tap according to claim 1.

3. The aforementioned pin has a large diameter portion and a weaker portion that is thinner than the large diameter portion. When the pin is positioned in the acceptable position, the fragile portion is located at the boundary between the peripheral edge of the through hole and the projection. A saddle-type water tap according to claim 2.

4. The system includes a holding member for holding the regulating member in the regulating position, The restricting member moves from the restricting position to the allowable position by removing the retaining member. A saddle-type water tap according to claim 1.

5. The regulating member is made of a permanent magnet. The peripheral portion is formed of a magnetic material and has a restricting member insertion hole into which the restricting member is retracted by the magnetic force of the restricting member. A saddle-type water tap according to claim 1.

6. A spacer is positioned between the projection and the peripheral edge to assist the relative rotation of the water distribution valve body and the saddle. A saddle-type water tap according to any one of claims 1 to 5.

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