Water tap with tools

Abstract

To provide a corporation cock attachment tool which can be easily removed from a corporation cock.SOLUTION: A corporation cock attachment tool includes: a tool body for performing processing to a water distributing pipe attached with a corporation cock; and an attachment part for detachably attaching the tool body to the corporation cock. The attachment part moves in an approach direction to be attached to the corporation cock and maintain a sealing state, in which a space between the attachment part and the corporation cock is sealed, and includes a pressure relief part for allowing the interior and exterior to communicate with each other when the sealing state is released by its movement in a separation direction.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present invention relates to a water distribution valve installation tool comprising a tool body for processing a water distribution pipe to which a water distribution valve is attached, and an attachment part for detachably attaching the tool body to the water distribution valve. [Background technology]

[0002] The above-mentioned branch valve installation tool has an attachment part watertightly attached to the branch valve, and the tool body processes the water main pipe as a water distribution pipe. Examples of the branch valve installation tool include a drilling machine that drills holes in the water main pipe to divert water from the water main pipe through the branch valve, and an inserter that inserts a water distribution core into the hole drilled by the drilling machine. Then, when processing using the tool body is completed, the branch valve installation tool is removed from the branch valve (for example, see Patent Document 1).

[0003] However, since water pressure is applied to the water main, the water tap, and the water tap attachment tool during the above-mentioned process, residual pressure remains inside the water tap tool even if the water tap valve is closed after the process is completed. Therefore, when trying to remove the attachment part of the water tap tool, a very large force is required due to the residual pressure, which is hard work. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-180674 A Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE PRESENT DISCLOSURE In view of the above-mentioned circumstances, an object of the present invention is to provide a water faucet installation tool that can be easily removed from a water faucet. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the branch valve installation tool of the present invention comprises a tool body for processing a distribution pipe to which a branch valve is attached, and an attachment part for removably attaching the tool body to the branch valve, the attachment part having a pressure relief part capable of releasing internal pressure to the outside, and the pressure relief part is configured so that when the attachment part is attached to the branch valve so that the tool body can process the distribution pipe, the pressure relief part is in a sealed state that seals the internal pressure from escaping to the outside, and when the attachment part in the attached state loosens in the direction of removal from the branch valve, the sealed state is released and a pressure relief state is entered in which the internal pressure is released to the outside.

[0007] According to the present invention, when the attachment part is attached to the faucet, a sealed state is created between the attachment part and the faucet. In this sealed state, the tool body performs treatment on the water pipe. When treatment by the tool body is completed, the attachment part is loosened in the direction of removal from the faucet, thereby releasing the internal pressure to the outside and depressurizing the water pipe.

[0008] In addition, in the branch valve installation tool of the present invention, the pressure relief portion may comprise a hole that connects the inside and outside of the installation portion, a sealing material that seals between the installation portion and the branch valve when the installation portion is in the installed state, and a pressing portion that presses the sealing material toward the branch valve to seal, and when the installation portion in the installed state loosens in the direction to be removed, the pressure applied by the pressing portion is released and the seal is released, thereby connecting the inside and outside through the hole and achieving the pressure relief state.

[0009] As described above, the pressure applied by the pressing portion is released and the seal is released, whereby the inside and outside are communicated through the hole, resulting in a depressurized state.

[0010] In addition, in the branch valve installation tool of the present invention, the installation part comprises a side wall part having a female threaded part that screws into a male threaded part formed on the outer peripheral surface of the branch valve, and a pressing part that is provided at the upper end of the side wall part and presses the sealing material towards the branch valve, and by rotating the installation part in a tightening direction in which the female threaded part is tightened relative to the male threaded part, the pressing part presses the sealing material towards the branch valve, sealing the space between the installation part and the branch valve and bringing the pressure relief part into a sealed state, and by rotating the installation part in a loosening direction in which the female threaded part is loosened relative to the male threaded part, the pressing part moves away from the branch valve, releasing the seal between the installation part and the branch valve and bringing the pressure relief part into a depressurized state.

[0011] As described above, by rotating the mounting part in the tightening direction, the pressing part presses the sealant towards the diverter valve, sealing the mounting part and the diverter valve, and the mounting part can be attached. After the mounting part is attached, the tool body is used to process the water pipe. When processing by the tool body is completed, the mounting part is rotated in the loosening direction to release the seal between the mounting part and the diverter valve, establishing communication between the inside and outside through the pressure relief part, and the internal pressure is released to the outside through the hole to relieve pressure. Effect of the Invention

[0012] According to the present invention, it is possible to provide a water distributor tap installation tool that can be easily removed from a water distributor tap by releasing pressure using a pressure release portion provided in the installation portion. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a front view of an insertion tool serving as a faucet installation tool of the present invention being installed on the faucet. [Diagram 2] FIG. 2 is a side view of a main part of the insertion device, with a portion in cross section. [Diagram 3] FIG. 4 is a cross-sectional view of a main part showing the pressure relief portion of the insertion device in a sealed state. [Figure 4] FIG. 4 is a cross-sectional view of a main part showing the pressure relief portion of the insertion device in a sealed state. [Diagram 5] FIG. 2 is a vertical cross-sectional view showing the state in which the insertion tool is attached to the water diversion faucet and in a first state immediately before the water diversion core is to be attached. [Figure 6] 6 is a vertical cross-sectional view of the insertion device showing a state in which the operating part has been lowered from the state shown in FIG. 5 so that the lower end of the water diversion core is inserted into the water diversion hole. FIG. [Figure 7] 7 is a vertical cross-sectional view showing a state in which the operating part is lowered from the state shown in FIG. 6 to expand the diameter of the water diversion core and complete attachment to the water diversion hole. FIG. [Figure 8] FIG. 2 is a vertical cross-sectional view showing the state in which the insertion tool is attached to the water diversion faucet and in a first state immediately before the water diversion core is to be attached. [Figure 9] 9 is a vertical cross-sectional view of the insertion device showing a state in which the operating part has been lowered from the state shown in FIG. 8 so that the lower end of the water diversion core is inserted into the water diversion hole. [Figure 10] 10 is a vertical cross-sectional view showing a state in which the operating part is lowered from the state shown in FIG. 9 to expand the diameter of the water diversion core and complete attachment to the water diversion hole. FIG. [Figure 11] FIG. 2 is a side view of a water distribution core with half of the core in cross section. [Figure 12] FIG. 2 is a front view of a drilling machine as a faucet installation tool of the present invention attached to the faucet. [Figure 13] FIG. 2 is a side view of a main part of the drilling machine, partly in cross section. [Figure 14] FIG. 11 is a front view of another type of drilling machine attached to a water distribution valve. [Figure 15] FIG. 15 is a side view, partly in section, of the essential parts of the drilling machine of FIG. 14. [Figure 16] FIG. 11 is a cross-sectional view of a main part showing a pressure relief portion of another embodiment. [Figure 17] 3 is a side view, partially in cross section, showing a connection between the water meter and piping. FIG. [Figure 18] 18 is a side view, partly in section, showing a state in which internal pressure is released to the outside through a pressure relief portion provided in the connection portion in FIG. 17. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] 1, 2, and 5 to 10 show an insertion tool 1 as a water distribution valve installation tool of the present invention. This insertion tool 1 is used to insert and install a water distribution core 9 into a water distribution hole 8A opened in a water distribution pipe 8 by a drilling machine S (see FIG. 12) described later.

[0015] 5, the inserter 1 includes a cylindrical body 2, an operating unit 3, a moving body 4, an elastic body 5, and a head 6. A tool main body H is formed by a second cylindrical body 22 (to be described later) constituting the cylindrical body 2, the operating unit 3, the moving body 4, the elastic body 5, and the head 6.

[0016] The cylindrical body 2 includes a metallic cylindrical first cylindrical body 21 that is detachably attached to the opening 72a at the upper end of the water distribution valve 7 by screwing, and a metallic cylindrical second cylindrical body 22 that is connected and fixed to the upper end of the first cylindrical body 21 by screwing. In this embodiment, the cylindrical body 2 is composed of two members, the first cylindrical body 21 and the second cylindrical body 22, but it may be composed of one member or any number of members equal to or greater than three. The first cylindrical body 21 constitutes an attachment portion for detachably attaching the tool main body H to the water distribution valve 7.

[0017] The first cylindrical body 21 is attached to the diverter tap 7 by moving in an approaching direction toward the diverter tap 7, maintaining a sealed state that seals the space between the first cylindrical body 21 and the diverter tap 7, and is equipped with a pressure relief section A (see Figures 1 and 2) that can release internal pressure to the outside when the sealed state is released by moving in a moving away direction away from the diverter tap 7.

[0018] As shown in Figs. 1 to 3, the pressure relief section A includes a plurality of (four in Fig. 1) circular (may be rectangular or elliptical) holes 21K that communicate the inside and outside of the first cylindrical body 21, a ring-shaped (annular) seal 25 that seals the first cylindrical body 21 and the diverter valve 7 when the first cylindrical body 21 is attached, and a pressing section 21D that presses the seal 25 against the diverter valve side to seal. When the first cylindrical body 21 in the attached state loosens in the direction of removal from the diverter valve 7, the pressure from the pressing section 21D is released and the sealing is released, so that the inside and outside are communicated through the holes 21K and the internal pressure is released to the outside, resulting in a pressure relief state. The holes 21K are located radially outward of the seal 25. In other words, the holes 21K are located outside the sealing area sealed by the seal 25.

[0019] 3, the first cylindrical body 21 is provided with a cylindrical side wall portion 21B having a female thread portion 21b formed on its inner circumferential surface which screws from the outside into a male thread portion 7N formed on the outer circumferential surface of the diverter tap 7, and a plate-like, ring-shaped pressing portion 21D at the upper end of the side wall portion 21B which presses the sealing material 25 towards the diverter tap. Therefore, by rotating the first cylindrical body 21 in the tightening direction (clockwise (right) in a plan view) in which the female thread portion 21b of the first cylindrical body 21 is tightened onto the male thread portion 7N of the diverter tap 7, the pressing portion 21D presses the sealing material 25 towards the diverter tap, sealing the first cylindrical body 21 and the diverter tap 7 and bringing the pressure relief portion A into a sealed state. Furthermore, by rotating the first cylindrical body 21 in the installed state in the loosening direction (counterclockwise (left) when viewed in a plan) in which the female threaded portion 21b loosens relative to the male threaded portion 7N, the pressing portion 21D moves away from the diversion tap 7 (see Figure 4), releasing the seal between the first cylindrical body 21 and the diversion tap 7 and causing the depressurization portion A to enter a depressurized state.

[0020] In addition, the multiple holes 21K are formed at a predetermined interval in the circumferential direction only in a predetermined range in the circumferential direction at the upper end of the side wall portion 21B (see FIG. 1). By forming the multiple holes 21K only in a predetermined range in the circumferential direction in this manner, it is possible to prevent the residual water discharged to the outside when the pressure is released from splashing on the worker. In this embodiment, multiple holes 21K are formed, but it may be one hole. In the case of one hole, it may be a horizontally elongated hole that is long in the circumferential direction. In addition, by providing multiple holes 21K, the amount of discharged residual water discharged to the outside when the pressure is released to the outside per unit time is increased, thereby reducing the flight distance of the discharged water, and it is possible to prevent the residual water from splashing on the worker. In this embodiment, the multiple holes 21K are formed in the circumferential direction, but they may be formed in the up-down direction, diagonal direction, or randomly.

[0021] FIG. 3 shows a sealed state in which the first cylindrical body 21 and the diverter tap 7 are sealed by rotating the first cylindrical body 21 in the tightening direction (clockwise (right) in plan view) and pressing the seal material 25 toward the diverter tap with the pressing part 21D. In this sealed state, the pressure inside the first cylindrical body 21 is not discharged to the outside. Also, a gap B is formed between the outer peripheral surface of the seal material 25 and the inner surface of the first cylindrical body 21, and a plurality of holes 21K are formed to face this gap B. Therefore, when the installation work of the water distribution core 9 described later is completed, in order to remove the inserter 1, the first cylindrical body 21 is rotated in the loosening direction (counterclockwise (left) in plan view) to separate the pressing part 21D from the diverter tap 7. As a result, as shown in Figure 4, the seal between the first cylindrical body 21 and the diverter tap 7 is released, connecting the sealed internal space C with the gap B, and the pressure inside (space C) is released to the outside from gap B through the multiple holes 21K. By releasing the internal pressure, only a very small rotational force is required to rotate the first cylindrical body 21 in the loosening direction from the state shown in Figure 4, and the insertion tool 1 can be easily removed from the diverter tap 7.

[0022] As shown in FIG. 5, the first cylindrical body 21 has the above-mentioned cylindrical side wall portion 21B at the lower end of the cylindrical cylindrical main body 21A, which has an outer diameter larger than the outer diameter of the cylindrical main body 21A and a length shorter than the length of the cylindrical main body 21A, and has a cylindrical small diameter portion 21C at the upper end of the cylindrical main body 21A, which has an outer diameter smaller than the outer diameter of the cylindrical main body 21A and a length shorter than the length of the cylindrical main body 21A. The female thread portion 21b is formed on the inner peripheral surface of the side wall portion 21B. The inserter 1 can be attached to the diverter tap 7 by screwing this female thread portion 21b into the male thread portion 7N formed on the outer surface of the upper end portion 72A that forms the opening 72a at the upper end of the diverter tap 7. In addition, a male thread portion is formed on the outer peripheral surface of the small diameter portion 21C. The second cylindrical body 22 can be fixed to the first cylindrical body 21 by screwing the female threaded portion formed on the inner surface of the second mounting portion 22A at the lower end of the second cylindrical body 22 into this male threaded portion.

[0023] As shown in FIG. 1, the water distributor 7 is composed of a saddle water distributor having a saddle body 71 that is attached to a water distribution pipe 8 and a water distributor body 72 that is attached to the saddle body 71 so as to be rotatable relative to the saddle body 71.

[0024] The water distribution valve body 72 is made of metal, and as shown in Fig. 5, has an upper end 72A having a circular opening 72a at the upper end, an intermediate portion 72B extending downward from the upper end 72A, and a lower end 72C connected to the lower end of the intermediate portion 72B and having a circular opening 72c at the lower end. The intermediate portion 72B has a ball valve (three-way valve) 73 and a branch joint portion 74 for connecting a joint (not shown). The ball valve (three-way valve) 73 is connected to a rotatable operating shaft 75. By rotating the operating shaft 75 in one direction, the ball valve 73 is opened to supply water from the water distribution pipe 8 to the water distribution valve body 72, and by rotating the operating shaft 75 in the opposite direction, the ball valve 73 is closed to prevent water from the water distribution pipe 8 from being supplied to the water distribution valve body 72. The lower end portion 72C has a first lower end portion 72D connected to the lower end portion of the intermediate portion 72B, and a second lower end portion 72E connected to the lower end of the first lower end portion 72D and having an arc-shaped abutment surface that abuts against the surface of the water distribution pipe 8.

[0025] As shown in FIG. 1, the saddle body 71 includes an upper saddle 71A that is placed on the upper part of the water distribution pipe 8, a lower saddle 71B that is placed on the lower part of the water distribution pipe 8, and a pair of fasteners 71C, 71C consisting of a bolt and a nut for fixing the upper saddle 71A and the lower saddle 71B to the water distribution pipe 8.

[0026] As shown in FIG. 5, a female screw portion 22N is formed on the inner surface of the support portion 22C. A male screw portion 31N that screws into the female screw portion 22N is formed on the outer circumferential surface of the operation portion body 31 that constitutes the operation portion 3. In addition, an annular groove 22a that is recessed outward is formed on the inner surface of the mounting portion 22A, and an O-ring 23 is accommodated in this groove 22a. The O-ring 23 is engaged with a circular groove 41M, which will be described later, formed on the lower end of the moving body 4, so that the moving body 4 is held so as not to move downward. This prevents the moving body 4 from accidentally moving downward due to its own weight when the inserter 1 is mounted on the diverter valve 7, causing the lower end of the head 6 provided at the lower end of the moving body 4 to come into contact with the ball valve 73 in the closed state provided on the diverter valve 7, thereby damaging the ball valve 73.

[0027] The operating unit 3 is made of metal, and comprises an operating unit main body 31 located on the inside, a cylindrical cover portion 32 located on the outside of the operating unit main body 31 and screwed and fixed to the side wall of the upper end of the operating unit main body 31, rod-shaped handles 33, 33 that are screwed and fixed into threaded portions formed at two circumferential points on the upper end of the operating unit main body 31, and a cap portion 34 formed on the inner surface of a circular skirt portion 34A at the lower end, and a female threaded portion that screws into a male threaded portion formed on the outer surface above the handles 33, 33 of the operating unit main body 31.

[0028] The operation unit body 31 has a top plate portion 31A having a hole 31a at its upper end through which the movable body 4 can be inserted, and on the outer surface of the lower end portion, a male screw portion 31N is formed which screws into the female screw portion 22N of the support portion 22C of the second cylindrical body 22. Therefore, by holding the handles 33, 33 and rotating the operation unit body 31, the operation unit body 31 moves along the female screw portion 22N, and moves the head 6 up and down.

[0029] The moving body 4 is made of metal, and is a circular rod-shaped member, and has a large diameter portion 41 having the largest diameter at the lower end, a small diameter portion 42 having the smallest diameter at the upper end, and an intermediate portion 43 having a smaller diameter than the large diameter portion 41 and a larger diameter than the small diameter portion 42 at the vertical intermediate portion. A step portion 44 between the intermediate portion 43 and the large diameter portion 41 abuts against a step portion 24 between the mounting portion 22A and the neck portion 22B of the second cylindrical body 22, thereby preventing the moving body 4 from moving further upward. At this time, as described above, the O-ring 23 provided on the second cylindrical body 22 engages with the lower end portion of the moving body 4, i.e., the groove 41M formed on the upper portion of the large diameter portion 41, thereby preventing the moving body 4 from moving downward (see FIG. 5).

[0030] Two nuts 45, 46 (also called double nuts) are screwed and attached to the upper end of the small diameter portion 42 of the moving body 4. The upper nut 45 is configured as a cap nut with a closed upper end. By screwing the two nuts 45, 46 to the small diameter portion 42 of the moving body 4 in this manner, it is possible to prevent the nuts 45, 46 from loosening relative to the moving body 4.

[0031] The upper nut 45 also has a second-side abutment portion with which the lower end (first-side abutment portion) of the plug 12 described later comes into contact and abuts. The second-side abutment portion (upper end) of the upper nut 45 and the first-side abutment portion (lower end) of the plug 12 described later have opposing surfaces facing each other in the direction of abutment, and are configured to abut by partially contacting each other's opposing surfaces. The partial contact may be a point contact or a line contact, but any contact may be used as long as the contact is partial. Specifically, for example, as shown in the enlarged view of FIG. 10, the upper end 45A, which is the second-side abutment portion of the upper nut 45, is made into a substantially conical shape tapering toward the upper side. Therefore, the upper end 45A of the upper nut 45 is in point contact (partial contact) with the flat surface 12a of the threaded portion 12A at the lower end of the plug 12, so that the rotational friction torque at the contact portion between the plug 12 and the upper nut 45 can be reduced, and the plug 12 can be prevented from rotating in the loosening direction due to the contact with the nut 45. In this embodiment, the upper end of the nut 45 is conical, but the upper end of the nut 45 may be flat and the lower end of the plug 12 may be conical. In this embodiment, two nuts 45, 46 are screwed onto the moving body 4, but one nut may be screwed onto the moving body 4, or the nuts may be omitted and the upper end of the moving body 4 may be conical.

[0032] In addition, an annular groove 45M (see FIG. 7) is formed on the side of the upper nut 45. This groove 45M is a mark for confirming the insertion position of the water distribution core 9. The groove 45M may be colored with paint or the like to make it conspicuous. Then, when the handles 33, 33 are rotated clockwise (right-handed) in a plan view to move the operation part 3 downward to insert the water distribution core 9 into the water distribution hole 8A of the water distribution pipe 8, the elastic body 5 contracts due to a reaction force from the water distribution hole 8A, and only the operation part 3 moves downward (see FIG. 7). As a result, the groove 45M of the upper nut 45 is exposed from the cap part 34. The worker can confirm that the water distribution core 9 has been inserted to the correct position and attached by the exposure of the groove 45M. The position where the upper nut 45 is exposed from the cap part 34 is the state where the water distribution core 9 is inserted in the correct position (normal) as shown in FIG. 7. 11, there are water diversion cores of different lengths, and these water diversion cores are attached to the water diversion hole 8A using a plug 12 described later. In this embodiment, an annular groove 45M is formed on the side surface of the nut 45, but a plurality of annular ridges protruding radially outward or protrusions protruding radially outward may be formed in the circumferential direction, or an annular line may be formed on the side surface of the nut 45 with paint or the like.

[0033] The elastic body 5 is made of a coil spring, and is disposed in the operation unit main body 31 in a state in which it penetrates the moving body 4 as shown in Fig. 5, with its upper end supported by the upper spring bearing 10 and its lower end supported by the lower spring bearing 11. The upper spring bearing 10 is restricted from moving upward by the top plate portion 31A of the operation unit main body 31, and the lower spring bearing 11 is engaged from above with a step portion 47 between the small diameter portion 42 and the intermediate portion 43 of the moving body 4, and is restricted from moving downward. Therefore, when the handles 33, 33 are rotated clockwise (right-handed) in a plan view to move the operation unit 3 downward, the spring pressure of the elastic body 5 moves the lower spring bearing 11 downward, and moves the moving body 4 downward together. Then, when the insertion pressure of the water distribution core 9 into the water distribution hole 8A reaches or exceeds a predetermined pressure, that is, when the insertion pressure of the water distribution core 9 attached to the head 6 into the water distribution hole 8A becomes greater than the spring pressure of the elastic body 5, the downward movement of the movable body 4 is prevented by the reaction force from the insertion pressure. This causes the elastic body 5 to contract. This contraction of the elastic body 5 causes only the operating part 3 to move downward, so that the upper nut 45 is exposed from the upper end of the cap part 34 of the operating part 3.

[0034] The head 6 is made of metal and has a generally cylindrical shape, is attached by screwing it to the lower end of the movable body 4, and has multiple steps spaced apart in the axial (longitudinal) direction. A water distribution core 9 is fitted to the head 6, and after the head 6 is inserted into the water distribution hole 8A, the head 6 is raised so as to be pulled out of the water distribution hole 8A, whereby the water distribution core 9 is attached in a state of intimate contact with the water distribution hole 8A.

[0035] As shown in FIG. 11, the water distribution core 9 is composed of a cylindrical resin sleeve 91 and a cylindrical metal sleeve 92. The lower part of the metal sleeve 92 is inserted into the upper part of the resin sleeve 91 and assembled. The resin sleeve 91 is made of, for example, polyethylene resin, and the metal sleeve 92 is made of stainless steel, but they may be made of other materials. Then, the water distribution core 9 in the state shown in FIG. 11 is attached to the head 6, and the head 6 is inserted into the water distribution hole 8A, so that the metal sleeve 92 completely enters the resin sleeve 91, thereby expanding and deforming the resin sleeve 91. As a result, the resin sleeve 91 is attached in a state of close contact between the water distribution hole 8A and the inner surface of the lower end of the water distribution valve 7.

[0036] When the inserter 1 having the above-mentioned configuration is used to mount the water distribution core 9 shown in FIG. 11 in the water distribution hole 8A, the plug 12 as a switching member is not attached to the operation unit 3, and is switched to the first state in which the elastic body 5 is allowed to contract. The plug 12 is made of metal (or a material having a strength substantially equivalent to that of metal), and as shown in the enlarged view of FIG. 10, includes a threaded portion 12A that is screwed into a female threaded portion 34a formed on the inside of the upper end of the cap portion 34, a disk-shaped abutment portion 12B that extends upward from the upper end of the threaded portion 12A and is configured to have a larger diameter than the threaded portion 12A so as to abut against the upper end surface 34T of the cap portion 34, and a cylindrical plug body 12C that extends from the upper end of the abutment portion 12B and has substantially the same outer diameter as the abutment portion 12B. The threaded portion 12A can be screwed into the female threaded portion 34a of the cap portion 34 by rotating the plug body 12C.

[0037] Therefore, when the water distribution core 9 shown in FIG. 11 is attached to the water distribution hole 8A, the plug 12 is switched to the first state in which it is not attached (screwed) to the cover part 32 of the operation part 3, and when a water distribution core having a length different from that of the water distribution core 9 shown in FIG. 11 is attached to the water distribution hole 8A, the plug 12 is screwed to the cap part 34 and switched to the second state (see FIG. 8). The first state is a state in which the contraction of the elastic body 5 is permitted. In other words, when the water distribution core 9 is inserted into the water distribution hole 8A, if the insertion pressure for inserting the head 6 into the water distribution hole 8A becomes greater than the elastic force of the elastic body 5, the elastic body 5 contracts, causing only the operation part 3 to move downward, and the moving body 4 does not move downward. In the second state, the plug 12 is screwed to the cap part 34 to integrate the operation part 3 and the moving body 4, that is, the moving body 4 is prevented from moving upward relative to the operation part 3. As a result, when the operation unit 3 moves downward, the movable body 4 can be moved downward by the same amount.

[0038] The procedure for mounting the water distribution core 9 shown in FIG. 11 to the water distribution hole 8A using the inserter 1 in the first state (a state in which the plug 12 is not attached to the cap portion 34 (not screwed)) will be described. First, the water distribution core 9 is fitted to the head 6 of the inserter 1, and the lower end of the cylindrical body 2 of the inserter 1 is screwed into the opening 72a at the upper end of the water distribution valve 7 to fix the inserter 1 (see FIG. 5). At this time, the groove 41M of the moving body 4 is engaged with the O-ring 23, and the moving body 4 is held so that it does not move downward under its own weight. The ball valve 73 of the water distribution valve 7 in FIG. 5 is closed until the inserter 1 is fixed (mounted), and opens after the fixing (mounting) is completed. Next, the handles 33, 33 are held and rotated clockwise (right) in a plan view to rotate the operating part 3 in the same direction, thereby lowering the operating part 3 and the moving body 4. As a result, as shown in FIG. 6, the lower end of the head 6 is inserted into the water distribution hole 8A, and the lower end of the water distribution core 9 is inserted into the water distribution hole 8A. When the handles 33, 33 are further rotated clockwise (right) in a plan view from the state shown in FIG. 6, the insertion pressure for inserting the head 6 into the water distribution hole 8A becomes greater than the elastic force of the elastic body 5. Therefore, when the handles 33, 33 are further rotated clockwise (right) in a plan view, the elastic body 5 contracts, and only the operating part 3 moves toward the water distribution valve (downward) relative to the moving body 4. This downward movement of the operating part 3 exposes the upper nut 45 from the upper end of the operating part 3. Then, when the groove 45M on the side of the upper nut 45 is exposed (see FIG. 7), the worker determines that the installation of the water distribution core 9 into the water distribution hole 8A is complete, and stops rotating the handles 33, 33 to end the installation work.

[0039] After the operation is completed, the state of FIG. 5 is returned to, the ball valve 73 is switched to the closed state, and the cylindrical body 2 is removed from the diverter tap 7. At this time, as described above, the handles 33, 33 are rotated counterclockwise (left) in a plan view, which is the opposite direction to the rotation, so that the attached first cylindrical body 21 is loosened in the direction of removal from the diverter tap 7. This releases the seal between the first cylindrical body 21 and the diverter tap 7, connecting the sealed internal space C with the gap B, and the pressure inside (space C) is discharged to the outside through the multiple holes 21K from the gap B. By releasing the internal pressure, the rotational force required to rotate the first cylindrical body 21 in the loosening direction from the state of FIG. 4 is very small, and the inserter 1 can be easily removed from the diverter tap 7.

[0040] Next, a procedure for mounting a water distribution core 13 having dimensions (e.g., length) different from the water distribution core 9 shown in FIG. 11 in the water distribution hole 8A using the inserter 1 in the second state (a state in which the plug 12 is attached to the cap portion 34 (screwed state)) will be described. First, the water distribution core 13 is fitted onto the head 6 of the inserter 1, and the lower end of the cylindrical body 2 of the inserter 1 is screwed into the opening 72a at the upper end of the water distribution valve 7 to fix the inserter 1 (see FIG. 8). At this time, the groove 41M of the moving body 4 is engaged with the O-ring 23, and the moving body 4 is held so as not to move downward under its own weight (see the enlarged view of FIG. 8). The ball valve 73 of the water distribution valve 7 in FIG. 1 is closed until the inserter 1 is fixed, and opens after the fixing is completed (it is in the open state in FIG. 8). Next, the handles 33, 33 are rotated clockwise (right) in a plan view to rotate the operating part 3 in the same direction, lowering the operating part 3 and the moving body 4. As a result, as shown in Fig. 9, the lower end of the head 6 is inserted into the water distribution hole 8A and the lower end of the water distribution core 13 is inserted into the water distribution hole 8A. When the handles 33, 33 are further rotated clockwise (right) in a plan view from the state shown in Fig. 9, the insertion pressure for inserting the head 6 into the water distribution hole 8A becomes greater than the elastic force of the elastic body 5. However, since the elastic body 5 is not contracted by the plug 12, when the handles 33, 33 are further rotated clockwise (right) in a plan view, the operating part 3 and the moving body 4 move in the same direction and by the same amount toward the water distribution valve side (downward). While checking the insertion pressure of the water distribution core 13 transmitted from the water distribution hole 8A to the handles 33, 33 of the operation unit 3, the worker determines that the installation of the water distribution core 13 into the water distribution hole 8A is complete by operating the handles 33, 33 of the operation unit 3, and stops the rotation of the handles 33, 33 to end the installation work. After completion, the worker rotates the handles 33, 33 counterclockwise (left) in a plan view in the opposite direction to the rotation to return to the state shown in FIG. 5, switches the ball valve 73 to a closed state, and then removes the cylindrical body 2 from the water distribution tap 7. During this removal, the internal pressure of the inserter 1 is released, as described above, so that the cylindrical body 2 can be easily removed from the water distribution tap 7.

[0041] When the inserter 1 in the first state is used, the plug 12 becomes unnecessary, and it becomes difficult to find a place to store the plug 12. To solve this problem, for example, a screw hole 3N may be formed in the operation part 3, and the lower end of the plug 12 may be screwed into the screw hole 3N, as shown in Fig. 1. If the plug 12 is connected to the operation part 3 by a connecting member such as a wire 26 (which may be a rope, string, or chain) having a length that allows it to be screwed into the screw hole 3N and the cap part 34, it is possible to avoid problems such as loss of the plug.

[0042] 12 and 13 show a state in which a drilling machine S having a branch valve cutter 27 for drilling holes in a water distribution pipe (not shown) is attached to a branch valve body 72 via an attachment 28. The drilling machine S is provided with a cylindrical fixing part 50, which is a mounting part fixed to the attachment 28 by screwing the attachment 28 to the upper end part 72A of the branch valve body 72 via a seal material 56. The upper end of the fixing part 50 is provided with a cylindrical part 51 that has an outer diameter smaller than that of the fixing part 50, extends upward, and has a male thread part 51N formed on the outer surface, an operating part 52 that has an inner diameter larger than the outer diameter of the cylindrical part 51, and has a female thread part (not shown) formed on the inner surface that screws into the male thread part 51N of the cylindrical part 51, and a plurality of (for example, four) handles 53 that are attached to the approximately vertical center of the operating part 52 at predetermined intervals in the circumferential direction.

[0043] The fixing part 50 is attached to the diverter tap 7 by moving in an approaching direction toward the diverter tap 7, thereby sealing the space between the first cylindrical body 21 and the diverter tap 7, and is provided with a pressure relief part A for establishing a state in which the inside and outside are connected when the sealing state is released by moving in a moving away direction away from the diverter tap 7.

[0044] The pressure relief section A comprises a plurality of (for example, four) circular (or rectangular or elliptical) holes 50K (see FIG. 12) that communicate between the inside and outside of the fixed section 50, a ring-shaped sealant 54 that seals the fixed section 50 and the diverter valve 7 when the fixed section 50 is attached, and a pressing section 55 that presses the sealant 54 against the diverter valve side to seal. When the pressure from the pressing section 55 is released, the seal is released, and the inside and outside are connected through the holes 50K, resulting in a pressure relief state.

[0045] The fixing part 50 is provided with a cylindrical side wall part 50A having a female thread part 50N formed on the inner circumferential surface thereof, which is screwed from the outside into a male thread part 28N formed on the outer circumferential surface of the upper end part of the attachment 28, and a plate-like, annular pressing part 55 at the upper end of the side wall part 50A, which presses the sealing material 54 toward the water faucet. Therefore, by rotating the fixing part 50 in a tightening direction (clockwise (right) in a plan view) in which the female thread part 50N is tightened relative to the male thread part 28N, the pressing part 55 presses the sealing material 54 toward the water faucet, sealing the fixing part 50 and the attachment 28, and by rotating the fixing part 50 in a loosening direction (counterclockwise (left) in a plan view), the pressing part 55 moves away from the attachment 28, releasing the seal between the fixing part 50 and the attachment 28. Incidentally, the attachment 28 may be omitted and the fixing part 50 may be fixed directly to the water distribution valve main body 72 by screwing.

[0046] As shown in FIG. 12, the multiple holes 50K are formed at a predetermined interval in the circumferential direction only in a predetermined range in the circumferential direction at the upper end of the side wall portion 50A. By forming the multiple holes 50K only in the predetermined range in the circumferential direction in this manner, it is possible to prevent the residual water discharged to the outside when the pressure is released from splashing on the worker. In this embodiment, multiple holes 50K are formed, but it may be one hole. In the case of one hole, it may be a horizontally elongated hole that is long in the circumferential direction. In addition, by providing multiple holes 50K, the amount of discharged residual water discharged to the outside when the pressure is released to the outside per unit time is increased, thereby reducing the flight distance of the discharged water, and it is possible to prevent the residual water from splashing on the worker. In this embodiment, the multiple holes 50K are formed in the circumferential direction, but they may be formed in the up-down direction, diagonal direction, or randomly.

[0047] The upper end of the split tap cutter 27 penetrates the upper end 52A of the operating part 52 and is connected to rotate integrally with the operating part 52. Therefore, after mounting the drilling machine S equipped with the split tap cutter 27, the ball valve 73 is opened, and then the handles 53, 53 are rotated clockwise (right) in a plan view to move the split tap cutter 27 downward while rotating. The blade 27A at the lower end of the split tap cutter 27 abuts against the water distribution pipe 8, and the handles 53, 53 are further rotated to cut the water distribution pipe 8 and form a hole in the water distribution pipe. After the hole is formed, the handles 53, 53 are rotated in the opposite direction (counterclockwise in a plan view) to move the blade 27A at the lower end of the split tap cutter 27 to its original position above the ball valve 73. After the movement, the ball valve 73 is closed and the tightened fixing part 50 is loosened to release the seal between the fixing part 50 and the attachment 28, and as shown in Fig. 4, the sealed internal space C is connected to the gap B, and the internal pressure is discharged to the outside from the gap B through the multiple holes 50K. By releasing the internal pressure, only a very small rotational force is required to rotate the fixing part 50 in the loosening direction, and the insertion tool 1 can be easily removed from the attachment 28.

[0048] 12 and 13, the multiple holes 50K are formed in the fixing portion 50, but Figures 14 and 15 show a case where multiple (for example, four) holes 28K are formed in the attachment 28. The attachment 28 comprises a cylindrical fixing portion 28A which is an attachment portion that is attached by screwing into a male threaded portion 72N formed in an upper end portion 72A of the water distribution valve main body 72, and a cylindrical portion 28B which extends upward from the upper end of the fixing portion 28A and has a smaller outer diameter than the fixing portion 28A and has a male threaded portion 28N formed on its outer surface.

[0049] The fixed part 28A is attached to the diverter tap 7 by moving in an approaching direction toward the diverter tap 7, thereby entering a sealed state that seals the space between the fixed part 28A and the diverter tap 7, and is provided with a pressure relief part A for establishing a state in which the inside and outside are connected when the sealed state is released by moving in a moving away direction away from the diverter tap 7.

[0050] The pressure relief section A comprises a plurality of (for example, four) circular (or rectangular or elliptical) holes 28K that communicate between the inside and outside of the fixed section 28A, a ring-shaped sealant 57 that seals the fixed section 28A and the diverter valve 7 when the fixed section 28A is attached, and a pressing section 28C that presses the sealant 57 against the diverter valve side to seal. When the pressure by the pressing section 28C is released to release the seal, the inside and outside are brought into communication through the holes 28K.

[0051] The fixing part 28A is provided with a cylindrical side wall part 28D having a female thread part 28d formed on its inner circumferential surface which screws from the outside into a male thread part 72N formed on the outer circumferential surface of the upper end part of the diverter tap body 72 of the diverter tap 7, and a plate-like, annular pressing part 28C at the upper end of the side wall part 28D which presses the sealing material 57 towards the diverter tap. Thus, by rotating the fixing part 28A in the tightening direction (clockwise (right) in plan view), the pressing part 28C presses the sealing material 57 towards the diverter tap, sealing the fixing part 28A and the diverter tap 7, and by rotating the fixing part 28A in the loosening direction (counterclockwise (left) in plan view), the pressing part 28C moves away from the diverter tap 7, releasing the seal between the fixing part 28A and the diverter tap 7.

[0052] As shown in FIG. 14, the holes 28K are formed at a predetermined interval in the circumferential direction only in a predetermined range in the circumferential direction at the upper end of the side wall portion 28D. By forming the holes 28K only in a predetermined range in the circumferential direction in this manner, it is possible to prevent the residual water discharged to the outside when the pressure is released from splashing on the worker. In this embodiment, the holes 28K are formed, but one hole may be formed. In the case of one hole, it may be a horizontally elongated hole that is long in the circumferential direction. In addition, by providing the holes 28K, the amount of discharged residual water discharged to the outside when the pressure is released to the outside per unit time is increased, thereby reducing the flight distance of the discharged water and preventing the residual water from splashing on the worker. In this embodiment, the holes 50K are formed in the circumferential direction, but they may be formed in the vertical direction, oblique direction, or randomly.

[0053] As described above, the upper end of the split tap cutter 27 penetrates the upper end 52A of the operating part 52 and is connected to rotate integrally with the operating part 52. Therefore, after mounting the drilling machine S equipped with the split tap cutter 27, the ball valve 73 is opened, and then the handles 53, 53 are rotated clockwise (right) in a plan view to move the split tap cutter 27 downward while rotating. The blade 27A at the lower end of the split tap cutter 27 abuts against the water distribution pipe 8, and the handles 53, 53 are further rotated to cut the water distribution pipe 8 and form a hole in the water distribution pipe. After the hole is formed, the handles 53, 53 are rotated in the opposite direction (counterclockwise in a plan view) to move the blade 27A at the lower end of the split tap cutter 27 upward to its original position. After the movement, the ball valve 73 is closed and the tightened attachment 28 is loosened from the diverter tap 7, releasing the seal between the fixed part 28A and the diverter tap main body 72, and as shown in Figure 4, the sealed internal space C is connected to the gap B, and the internal pressure is released to the outside from the gap B through the multiple holes 28K. By releasing the internal pressure, only a very small rotational force is required to rotate the fixed part 28A in the loosening direction, and the drilling machine S can be easily removed from the diverter tap main body 72.

[0054] FIG. 16 shows a case where the holes 21K are formed to be downwardly inclined holes located downward toward the outside. By forming the holes inclined downward in this manner, the direction of the water discharged with force can be directed downward, thereby preventing the water from splashing on the worker. Also, in FIG. 16, a water guide member 58 that receives the water discharged from the holes 21K and guides it downward may be attached. When the water guide member 58 is attached, the direction of the holes 21K may be inclined downward or may be horizontal.

[0055] 17 shows a case where a pressure relief hole 61K is formed in a meter connecting nut 61 provided on a pipe 60 in order to connect the pipe 60 to a water meter M. The meter connecting nut 61 is provided with a semicircular annular groove 61m formed on the inner surface of one axial end portion, and is provided with a sealant 62 having a circular cross section in the groove, and with a female thread portion 61N on the inner surface of the other axial end portion, which is screwed into a male thread portion N provided on the outer surface of one end portion of the water meter M. Therefore, a ring-shaped, plate-like packing 63 is disposed between one end face of the water meter M and the corresponding end face 60T of the pipe 60, and the female thread portion 61N of the meter connecting nut 61 is screwed into the male thread portion N of the water meter M, thereby connecting the water meter M and the pipe 60 in a sealed state with the packing 63. When replacing the water meter M, a stop valve (not shown) located on the primary side (water supply side) of the meter connecting nut 61 is closed, and then the meter connecting nut 61 is rotated in a loosening direction to release the seal (see FIG. 18), and the residual pressure in the water meter M and the piping 60 is discharged from the hole 61K. This makes it easy to rotate the meter connecting nut 61 thereafter. The meter connecting nut 61 having the hole 61K may be used when connecting the water meter M to either the primary side piping or the secondary side piping, or may be used to connect both the primary side piping and the water meter M and the secondary side piping and the water meter M.

[0056] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention.

[0057] 3 in the above embodiment, the sealing material 25 is moved toward the diverter valve side by rotating the first cylindrical body (mounting part) 21, but the sealing material 25 may be moved closer to the diverter valve side by hitting the first cylindrical body (mounting part) 21 with a hammer or the like. In this case, to release the seal, the first cylindrical body (mounting part) 21 is hit with a hammer or the like from the opposite direction to the above so as to move it away from the diverter valve 7.

[0058] In addition, in the embodiment shown in FIG. 3, the hole 21K is formed in the side wall portion 21B, but it may be formed in the pressing portion (top wall portion) 21D formed at the upper end of the side wall portion 21B.

[0059] In the above embodiment, the hole 21K is formed to have the same diameter from the beginning to the end in the penetrating direction, but the diameter at the end may be larger than the diameter at the beginning. Also, the hole is formed in a straight line, but it may be formed in a curved line. [Explanation of symbols]

[0060] 1...insertion tool, 2...tubular body, 3...operation part, 3N...screw hole, 4...moving body, 5...elastic body, 6...head, 7...water distribution valve, 7N...threaded part, 8...water distribution pipe, 8A...water distribution hole, 9...water distribution core, 12...plug, 12A...threaded part, 12B...contact part, 12C...plug body, 12a...flat surface, 13...water distribution core, 21...first cylindrical body (mounting part), 21A...tubular body, 21B...side wall part, 21C...small diameter part, 21D...pressing part (top wall part), 21K...hole, 21b...threaded part, 22A...second mounting part, 22B...neck part, 22C...support part, 22N...threaded part, 22a...groove, 23...O-ring, 24...step part, 25...sealing material, 26...wire, 27...water distribution valve cutter, 2 7A...blade portion, 28...attachment, 28A...fixed portion (mounting portion), 28B...cylindrical portion, 28C...pressing portion, 28D...side wall portion, 28K...hole, 28N...threaded portion, 28d...threaded portion, 31...operating portion main body, 31A...top plate portion, 31N...threaded portion, 31a...hole, 32...cover portion, 33...handle, 34...cap portion, 34A...skirt portion, 34T...upper end surface, 34a...threaded portion, 41...large diameter portion, 41M...groove, 42...small diameter portion, 43...middle portion, 44...step portion, 45,46...nut, 45A...upper end, 45M...groove, 47...step portion, 50...fixed portion (mounting portion), 50A...side wall portion, 50K...hole, 50N...threaded portion, 51...cylindrical portion, 51N...threaded portion, 52... Operation part, 52A...upper end, 53...handle, 54...sealing material, 55...pressure part, 56, 57...sealing material, 58...water guide member, 59...sealing material, 60...piping, 60T...end face, 61...meter connection nut, 61K...hole, 61N...threaded part, 61m...groove, 62...sealing material, 63...packing, 71...saddle body, 71A...upper saddle, 71B...lower saddle, 71C... Fastener, 72...water distribution valve body, 72A...upper end, 72B...middle part, 72C...lower end, 72N...threaded part, 72a...opening, 72c...opening, 73...ball valve (three-way valve), 74...branch joint part, 75...operating shaft, 91...plastic sleeve, 92...metal sleeve, A...pressure relief part, B...gap, C...inside (space), H...tool body, M...water meter, N...threaded part, S...drilling machine

Claims

1. A tool body for processing a water pipe to which a water distribution valve is attached, and an attachment part for detachably attaching the tool body to the water distribution valve, The mounting part has a pressure relief part capable of releasing internal pressure to the outside, and the pressure relief part is configured to be in a sealed state that seals the internal pressure so as not to escape to the outside when the mounting part is attached to the water distribution valve so that the tool body can treat the water supply pipe, and to be in a depressurized state in which the internal pressure is released to the outside when the mounting part in the attached state is loosened in a direction in which it is removed from the water distribution valve, and The depressurization portion comprises a hole that connects the inside and outside of the mounting portion, a sealing material that seals the space between the mounting portion and the branch tap when the mounting portion is in the mounted state, and a pressing portion that presses the sealing material toward the branch tap to seal, and when the mounting portion in the mounted state loosens in the direction of removal, the pressure applied by the pressing portion is released and the seal is released, thereby connecting the inside and outside of the mounting portion through the hole and entering the depressurized state.

2. The branch tap installation tool described in claim 1, characterized in that the mounting portion comprises a side wall portion having a female threaded portion that screws into a male threaded portion formed on the outer peripheral surface of the branch tap, and a pressing portion that is provided at the upper end of the side wall portion and presses the sealing material toward the branch tap, characterized in that by rotating the mounting portion in a tightening direction that tightens the female threaded portion relative to the male threaded portion, the pressing portion presses the sealing material toward the branch tap, sealing the space between the mounting portion and the branch tap and bringing the depressurization portion into a sealed state, and by rotating the mounting portion in a loosening direction that loosens the female threaded portion relative to the male threaded portion, the pressing portion moves away from the branch tap, releasing the seal between the mounting portion and the branch tap and bringing the depressurization portion into a depressurized state.

3. A water distributor tap installation tool as described in Claim 1, characterized in that the holes are formed in multiple locations at predetermined intervals circumferentially only within a predetermined circumferential range of the installation portion.

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