JP7621644B2 - Water distribution core inserter - Google Patents

Description

The present invention relates to an inserter for a water distribution core.

The inserter for the water distribution core is used to lower an insertion rod that moves up and down by rotating a horizontally rotating handle, and insert and attach the water distribution core into the water distribution hole of the water main pipe through the water distribution valve using a stretcher head attached to the lower end of the insertion rod. This prevents corrosion of the water distribution hole. The inserter is equipped with an inserter body that is fixed to the water distribution valve with the insertion rod inserted and has a threaded portion at the top, a handle body that has a feed screw portion that screws with the threaded portion of the inserter body and moves up and down by rotating the handle with the top of the insertion rod penetrated, a spring that is installed between the handle body and the insertion rod and transmits the rotational torque of the handle to the insertion rod, and a cap that is attached to the top of the handle body and has a window hole through which the top of the insertion rod that penetrates from the handle body can freely enter and exit. When the handle body is lowered a certain amount to insert the water distribution core into the water distribution hole, if the insertion pressure of the water distribution core into the water distribution hole exceeds a certain pressure, the spring is compressed and the upper penetrating part of the insertion rod protrudes from the window hole by a length corresponding to the amount of contraction of the spring. This allows the user to know that the installation of the water distribution core is complete (see, for example, Patent Document 1).

Water distribution cores come in a variety of lengths, but the inserter is designed to allow standard length water distribution cores to be easily attached. For example, when attaching a short water distribution core, the spring's stroke toward the contraction side is large, so the water distribution core is inserted into the water distribution hole more than necessary. This can result in deformation of the water distribution core, leading to poor installation. Conversely, when attaching a long water distribution core, the spring's stroke toward the contraction side is small, so the insertion length for inserting the water distribution core into the water distribution valve is insufficient, leading to poor installation.

JP 2019-107705 A

In view of the above situation, the present invention aims to solve the problem by providing a water distribution core inserter that can reduce installation defects.

In order to solve the above-mentioned problems, the water distribution core inserter of the present invention is a water distribution core inserter for inserting and attaching a cylindrical water distribution core into a water distribution hole formed in a water distribution pipe to which a water distribution valve is attached, the water distribution core inserter comprises a cylindrical body having a fixing part attached to the opening of the water distribution valve at one end in the axial direction, an operating part that moves in the axial direction of the cylindrical body by screwing into the cylindrical body and rotating it about the axis, a movable body that is provided to penetrate the cylindrical body and the operating part and is movable in the axial direction, an elastic body that is interposed between the operating part and the movable body to transmit the moving force of the operating part in the axial direction to the movable body, and a water distribution core that is attached to the tip of the one end side of the axial direction of the movable body. and a head that detachably holds the operating part, and when the operating part is rotated to move toward one end in the axial direction, the moving body moves toward one end in the axial direction via the elastic body, and the water distribution core is inserted into the water distribution hole, and when the insertion pressure of the water distribution core into the water distribution hole reaches a predetermined pressure or higher, the elastic body contracts, so that only the operating part moves relative to the moving body toward the one end, and the switching member is configured to be switchable between a first state that allows the contraction of the elastic body to allow the operating part to move relative to the moving body, and a second state that restricts the contraction of the elastic body to restrict the relative movement of the operating part to the moving body.

According to the present invention, when the water distribution core is attached to the water distribution hole by switching to the first state with the switching member, when the insertion pressure of the water distribution core into the water distribution hole reaches or exceeds a predetermined pressure, the elastic body contracts, and only the operating unit moves toward the water distribution valve side relative to the moving body. At this time, the worker determines that the installation of the water distribution core into the water distribution valve is complete by checking the amount of movement of the operating unit relative to the moving body. Then, when a water distribution core of a length that is difficult to install in the first state is to be attached to the water distribution hole, the switching member is switched to the second state. In this case, even if the insertion pressure of the water distribution core into the water distribution hole reaches or exceeds a predetermined pressure, the elastic body does not contract and moves toward the water distribution valve side together with the operating unit. Therefore, the worker determines that the installation of the water distribution core into the water distribution valve is complete by operating the operating unit while checking the insertion pressure of the water distribution core transmitted from the water distribution hole to the operating unit.

The inserter for the water distribution tap core of the present invention may also be configured so that the switching member is attached to one of the operating unit and the movable body and engages with the other to enter the second state, and is switched to the first state by releasing the engagement with the other.

As described above, the second state can be achieved simply by engaging the switching member attached to either the operating unit or the movable body with the other. Also, the first state can be achieved simply by disengaging the switching member that is engaged with the other.

The inserter for the water distribution core of the present invention may also be configured such that the switching member is detachably attached to one of the operating unit and the moving body, and is disengaged from one by removing it from the other.

As described above, the switching member attached to either the operating unit or the moving body can be disengaged from the other simply by removing it from the other.

The inserter for the water distribution tap core of the present invention may be configured such that the switching member has a one-side abutment portion that abuts to engage with the other of the operating portion and the moving body, and the other has an other-side abutment portion that abuts against the one-side abutment portion, and the one-side abutment portion and the other-side abutment portion have opposing surfaces that face each other in the direction of abutment, and the opposing surfaces abut by partially contacting each other.

As described above, the opposing surface of the abutment portion on one side and the opposing surface of the abutment portion on the other side come into partial contact with each other, so the rotational friction torque can be reduced. This makes it possible to prevent the switching member from rotating in the loosening direction due to contact with the moving body.

According to the present invention, it is possible to provide a water distribution core inserter that can suppress installation defects by providing a switching member that switches between a first state that allows the elastic body to contract and a second state that restricts the contraction of the elastic body.

FIG. 2 is a vertical cross-sectional view showing a state immediately before the insertion tool for a water diversion core of the present invention is attached to a water diversion faucet and the water diversion core is attached in a first state. 2 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. 1 so that the lower end of the water diversion core is inserted into the water diversion hole. FIG. 3 is a vertical cross-sectional view showing a state in which the operating part is lowered from the state shown in FIG. 2 to expand the diameter of the water diversion core and complete attachment to the water diversion hole. FIG. FIG. 2 is a vertical cross-sectional view showing a state immediately before the insertion tool for a water diversion core of the present invention is attached to a water diversion faucet and the water diversion core is attached in a first state. 5 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. 4 to insert the lower end of the water diversion core into the water diversion hole. FIG. 6 is a vertical cross-sectional view showing a state in which the operating part is lowered from the state shown in FIG. 5 to expand the diameter of the water diversion core and complete attachment to the water diversion hole. FIG. FIG. 2 is a side view of a water distribution core with half of the core in cross section.

Figure 1 shows the inserter 1 of the water distribution core of the present invention (hereinafter simply referred to as the inserter). Note that in this embodiment, the axial direction will be described as the up-down direction.

The inserter 1 comprises a cylindrical body 2, an operating unit 3, a moving body 4, an elastic body 5, and a head 6.

The cylindrical body 2 comprises a fixed 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, three or more.

The first cylindrical body 21 comprises a cylindrical main body 21A, a cylindrical large diameter portion 21B at the lower end of the cylindrical main body 21A that 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 a cylindrical small diameter portion 21C at the upper end of the cylindrical main body 21A that 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.

A female thread is formed on the inner peripheral surface of the large diameter portion 21B. The inserter 1 can be attached to the water faucet 7 by screwing this female thread into a male thread formed on the outer surface of the upper end portion 72A that forms the opening 72a at the upper end of the water faucet 7. In addition, a male thread 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 this male thread into a female thread formed on the inner peripheral surface of the mounting portion 22A at the lower end of the second cylindrical body 22 (described later).

The second cylindrical body 22 is provided with an attachment section 22A having a female thread formed on its inner surface that screws into a male thread formed on the outer surface of the small diameter section 21C of the first cylindrical body 21, a cylindrical neck section 22B that has a smaller diameter and extends upward from the upper end of the attachment section 22A, and a cylindrical support section 22C that has a larger diameter than the attachment section 22A and supports the operating section 3 so that it can move up and down from the upper end of the neck section 22B.

The water distribution valve 7 is composed of a saddle water distribution valve that includes a saddle body 71 that is attached to the water distribution pipe 8 and a water distribution valve body 72 that is rotatably attached to the saddle body 71.

The water distribution valve body 72 is made of metal and has an upper end 72A with 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 to the one 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 72C has a first lower end 72D that is connected to the lower end of the middle portion 72B, and a second lower end 72E that is connected to the lower end of the first lower end 72D and has an arc-shaped abutment surface that abuts against the surface of the water pipe 8.

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.

A female thread 22N is formed on the inner surface of the support 22C. A male thread 31N that screws into the female thread 22N is formed on the outer circumferential surface of the operating unit body 31 that constitutes the operating unit 3. As shown in the enlarged view of FIG. 1, 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 attached to the water distribution 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 closed ball valve 73 provided on the water distribution valve 7 and damage the ball valve 73. In this embodiment, when the lower end of the head 6 is located above the ball valve 73, the O-ring 23 engages with a circular groove 41M formed at the lower end of the moving body 4, as described below. However, when there is no ball valve 73, when the lower end of the head 6 is located above the water distribution hole 8A, the O-ring 23 engages with a circular groove 41M formed at the lower end of the moving body 4, as described below.

All of the components of the operating unit 3 are made of metal, and the operating unit 3 includes an operating unit main body 31 located on the inside, a cylindrical cover part 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, a plurality of rod-shaped handles 33, 33 (two in FIG. 1, but any number is acceptable) screwed and fixed to threaded parts formed at two circumferential points on the upper end of the operating unit main body 31, and a cap part 34 formed on the inner circumferential surface of an annular skirt part 34A at the lower end, with a female threaded part that screws into a male threaded part formed on the outer surface above the handles 33, 33 of the operating unit main body 31.

The operating unit body 31 has a top plate portion 31A with a hole 31a at the upper end through which the movable body 4 can be inserted, and a male thread portion 31N that screws into the female thread portion 22N of the support portion 22C of the second cylindrical body 22 is formed on the outer surface of the lower end portion of the operating unit body 31. Therefore, by holding the handles 33, 33 and rotating the operating unit body 31 around the vertical axis, the operating unit body 31 moves along the female thread portion 22N to move the head 6 up and down (it is moved downward in Figures 2 and 3).

The moving body 4 is made of metal, and is a circular rod-shaped member, and has a large diameter portion 41 with the largest diameter at the lower end, a small diameter portion 42 with the smallest diameter at the upper end, and an intermediate portion 43 with a smaller diameter than the large diameter portion 41 and a larger diameter than the small diameter portion 42 at the vertical intermediate portion. The step portion 44 (see the enlarged view in FIG. 1) between the intermediate portion 43 and the large diameter portion 41 abuts against the step portion 24 between the mounting portion 22A and the neck portion 22B of the second cylindrical body 22, preventing further upward movement of the moving body 4. At this time, as described above, the O-ring 23 provided on the second cylindrical body 22 engages with the lower end of the moving body 4, i.e., the groove 41M formed on the upper part of the large diameter portion 41, thereby preventing downward movement of the moving body 4 (see FIG. 1).

Two nuts 45, 46 (also called double nuts) are screwed and attached to the upper end of the small diameter section 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 onto the small diameter section 42 of the moving body 4 in this way, it is possible to prevent the nuts 45, 46 from loosening relative to the moving body 4.

In addition, the upper nut 45 has a second-side abutment portion with which the lower end (one-side abutment portion) of the plug 12 described later comes into contact and abuts. The other-side abutment portion (upper end) of the upper nut 45 and the one-side abutment portion (lower end) of the plug 12 described later have opposing surfaces that face 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. 6, the upper end 45A, which is the other-side abutment portion of the upper nut 45, is made into an approximately conical shape that tapers toward the upper side. Therefore, since 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, 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 abutment 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.

In addition, an annular groove 45M (see the enlarged view of FIG. 3) 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 more noticeable. Then, the handles 33, 33 are rotated clockwise (rightward) in a plan view (axial view) to move the operating part 3 downward and insert the water distribution core 9 into the water distribution hole 8A of the water distribution pipe 8. During this insertion, the elastic body 5 contracts due to the reaction force from the water distribution hole 8A, and only the operating part 3 moves downward (see FIG. 3). This exposes the groove 45M of the upper nut 45 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 this groove 45M. The position in which the upper nut 45 is exposed from the cap part 34 is the state in which the water distribution core 9 is inserted in the correct position (normal) as shown in FIG. 3. In addition to the water distribution core 9 shown in FIG. 7, there are water distribution cores of different lengths, and these water distribution cores can be attached well to the water distribution hole 8A by using a plug 12 described later. In this embodiment, an annular groove 45M is formed on the side of the nut 45, but it is also possible to form multiple annular ridges or protrusions that protrude radially outward in the circumferential direction, or to form an annular line on the side of the nut 45 with paint or the like.

The elastic body 5 is composed of a coil spring, and is disposed in the operating unit main body 31 while passing through the moving body 4, 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 operating unit main body 31, and the lower spring bearing 11 is engaged from above with the step portion 47 between the small diameter portion 42 and the middle 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 operating 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 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 reaction force from the insertion pressure prevents the moving body 4 from moving downward. 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 (see Figure 3).

The head 6 is made of metal and is generally cylindrical, and is attached to the lower end of the moving body 4 by screwing, forming multiple steps spaced apart in the axial (longitudinal) direction. The 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.

As shown in FIG. 7, 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. 7 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, 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.

When the water distribution core 9 shown in FIG. 7 is attached to the water distribution hole 8A using the inserter 1 of the above configuration, the plug 12 as a switching member is not attached to the operating part 3, and the elastic body 5 is allowed to contract, switching to the first state in which the operating part 3 is allowed to move relative to the moving body 4. The plug 12 is made of metal (or a material having a strength substantially equivalent to that of metal), and as shown in FIG. 6, includes a threaded part 12A that is screwed into the female threaded part 34a formed at the upper end of the cap part 34, a disk-shaped abutment part 12B that extends upward from the upper end of the threaded part 12A and abuts against the upper end surface 34T of the cap part 34 and is configured with a larger diameter than the threaded part 12A, and a cylindrical plug body 12C that extends from the upper end of the abutment part 12B and has substantially the same outer diameter as the abutment part 12B. The threaded part 12A can be screwed into the female threaded part 34a of the cap part 34 by rotating the plug body 12C. The lower end of the threaded portion 12A has a flat surface 12a, which is the one-side abutment portion that partially contacts and abuts the upper end 45A, which is the other-side abutment portion.

Therefore, when the water distribution core 9 shown in FIG. 7 is attached to the water distribution hole 8A, the plug 12 is removed from the cap part 34 and switched to the first state in which the plug 12 is not attached to the cap part 34 (see FIG. 1), and when a water distribution core of a different length from the water distribution core 9 shown in FIG. 7 is attached to the water distribution hole 8A, the plug 12 is attached to the cap part 34 and switched to the second state (see FIG. 4). 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, when 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 operating part 3 to move downward, and the moving body 4 does not move downward. In the second state, the plug 12 is screwed into the cap part 34 to integrate the operating part 3 and the moving body 4, that is, the upward movement of the moving body 4 relative to the operating part 3 is restricted. As a result, when the operating unit 3 moves downward, the moving body 4 moves downward by the same amount.

The procedure for mounting the water distribution core 9 shown in FIG. 7 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) 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. 1). 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. 1 is closed until the inserter 1 is fixed, and opens after the fixing 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. 2, 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. 2, 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. When the groove 45M on the side of the upper nut 45 is exposed (see Fig. 3), the worker determines that the installation of the water distribution core 9 to the water distribution valve 8A is complete, and the rotation of the handles 33, 33 is stopped to end the installation work. After finishing, rotate the handles 33, 33 counterclockwise (left) to return them to the state shown in FIG. 1, then switch the ball valve 73 to the closed state and remove the cylindrical body 2 from the water distribution valve 7.

Next, the procedure for installing the water distribution core 13, which has a different length from the water distribution core 9 shown in FIG. 7, in the water distribution hole 8A using the inserter 1 in the second state (the state in which the plug 12 is screwed and attached to the cap part 34) will be described. First, the water distribution core 13 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. 4). 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 (see FIG. 4). 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. 4). 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. 5, 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. If the handles 33, 33 are further rotated clockwise (right) in plan view from the state shown in Fig. 5, 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 plug 12 restricts the elastic body 5 from being contracted, if the handles 33, 33 are further rotated clockwise (right) in plan view, the operation unit 3 and the moving body 4 move in the same direction and by the same amount toward the water distribution valve side (downward). The operator determines that the installation of the water distribution core 13 to the water distribution valve 8A is complete by operating the handles 33, 33 of the operation unit 3 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, and stops the rotation of the handles 33, 33 to end the installation work. After finishing, rotate the handles 33, 33 counterclockwise (left) to return them to the state shown in FIG. 1, then switch the ball valve 73 to the closed state and remove the cylindrical body 2 from the water distribution valve 7.

When using the inserter 1 in the first state, the plug 12 is no longer needed, and so there is a problem with where to store the plug 12. To solve this problem, for example, a screw hole (not shown) may be formed in the operating unit 3, and the plug 12 may be screwed into the screw hole. If the plug 12 is connected to the operating unit 3 by a connecting member such as a wire, string, or rope that is long enough to be screwed into the screw hole and the cap portion 34, problems such as loss can be avoided.

The present invention is not limited to the above embodiment, and various modifications are possible without departing from the spirit of the present invention.

In the above embodiment, the switching member is configured from a plug 12 that is detachably screwed into the cap portion 34, but a through hole (not shown) that passes horizontally through both the cap portion 34 and the moving body 4 in the state shown in FIG. 1 may be formed, and the switching may be made between a second state in which a pin that passes horizontally through the through hole of the cap portion 34 passes through the through hole of the moving body 4 and is attached, and a first state in which the pin is not attached; the specific configuration of the switching member may be freely changed.

In addition, in the above embodiment, a coil spring is used as the elastic body 5, but a leaf spring or synthetic rubber with a restoring force may also be used.

1...insertion device for water distribution core, 2...cylindrical body, 3...operation unit, 4...moving body, 5...elastic body, 6...head, 7...water distribution valve, 8...distribution pipe, 8A...water distribution hole, 9...water distribution core, 10...upper spring receiver, 11...lower spring receiver, 12...plug (switching member), 12A...threaded portion, 12B...contact portion, 12C...plug body, 12a...flat surface, 13...water distribution core, 21...first cylindrical body, 21A...cylindrical body, 21B...large diameter portion, 21C...small diameter portion, 22...second cylindrical body, 22A...mounting portion, 22B...neck portion, 22C...support portion, 22N...threaded portion, 22a...groove, 23...O-ring, 24...step portion, 31...operation unit body, 31A...top plate portion, 31 N...male threaded portion, 31a...hole, 32...cover portion, 33, 33...handle, 34...cap portion, 34A...skirt portion, 34T...upper end surface, 34a...female 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, 71...saddle body, 71A...upper saddle, 71B...lower saddle, 71C...fastener, 72...water distribution valve body, 72A...upper end, 72B...middle portion, 72C...lower end, 72a...opening, 72c...opening, 73...ball valve (three-way valve), 74...branch joint portion, 75...operating shaft, 91...resin sleeve, 92 metal sleeve

Claims (4)

A water distribution core inserter for inserting and attaching a cylindrical water distribution core into a water distribution hole formed in a water distribution pipe to which a water distribution valve is attached,
the water diversion valve includes a cylindrical body having a fixed portion at one axial end thereof that is attached to an opening of the water diversion valve; an operating portion that moves in the axial direction of the cylindrical body by being screwed into the cylindrical body and rotated about the axis; a movable body that is provided to pass through the cylindrical body and the operating portion and is movable in the axial direction; an elastic body that is interposed between the operating portion and the movable body to transmit the moving force of the operating portion in the axial direction to the movable body; and a head that is provided at the tip of the one axial end side of the movable body and that detachably holds the water diversion core;
When the operating part is rotated to move it toward one end in the axial direction, the movable body moves toward the one end in the axial direction via the elastic body, and the water diversion core is inserted into the water diversion hole, and when the insertion pressure of the water diversion core into the water diversion hole reaches or exceeds a predetermined pressure, the elastic body contracts, causing only the operating part to move toward the one end relative to the movable body,
A water distribution core inserter characterized in that it is provided with a switching member that is configured to be switchable between a first state that allows the elastic body to contract and allows relative movement of the operating part with respect to the moving body, and a second state that restricts the contraction of the elastic body and restricts the relative movement of the operating part with respect to the moving body. The water distribution core inserter according to claim 1, characterized in that the switching member is attached to one of the operating unit and the movable body and engages with the other to enter the second state, and is switched to the first state by disengaging from the other. The water distribution core inserter according to claim 2, characterized in that the switching member is detachably attached to one of the operating unit and the moving body, and is disengaged from one by being removed from the other. The water distribution core inserter according to claim 2 or 3, characterized in that the switching member has a one-side abutment portion that abuts to engage with the other of the operating portion and the moving body, and the other has a other-side abutment portion that abuts against the one-side abutment portion, and the one-side abutment portion and the other-side abutment portion have opposing surfaces that face each other in the direction of abutment, and are configured to abut by partial contact of the opposing surfaces.