JP2021042554A - Meter unit - Google Patents

Abstract

To provide a meter unit with a low-cost having a simple structure, capable of being easily attached to primary side piping and secondary side piping provided upward from a floor of a pipe shaft.SOLUTION: A meter unit A can be attached to a water meter M arranged between an upper end part of primary side piping P1 provided upward from a floor 20a of a building frame 20 and an upper end part of secondary side piping P2 provided upward from the floor 20a of the building frame 20. The meter unit A includes a rotation mechanism RM that is arranged on one side of the water meter M in a flow path direction and can rotate around a pipe axis with respect to the water meter M and a telescopic mechanism TM that is arranged on the other side of the water meter M in the flow path direction and can expand and contract in the flow path direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a meter unit installed in an apartment house or the like.

Generally, a water meter is installed in an installation space (called a "pipe shaft") such as a water supply / drainage pipe in an apartment house such as an apartment. Water meters have a period of use specified by the Measurement Law and must be replaced before the specified period has elapsed. There are various types of meter units, but most of them are intended for use in new installations.
Some water meters are installed horizontally between the primary side pipe and the secondary side pipe, which is called the torii pipe buried in the building frame, so it can be easily replaced or newly installed. It has a structure that cannot be done.

For example, the meter unit (1) described in Patent Document 1 is known as a device capable of suitably renewing a water supply facility such as an aged water supply pipe.
The meter unit (1) of Patent Document 1 includes an elbow portion (5) rotatably arranged to the left and right of the water meter (M), a base portion (2) that supports the left and right elbow portions (5), and a base portion (2). It is provided with a support leg portion (3) that supports the base portion (2) on the ground plane (B).

In addition, when replacing the water meter, a load may be applied to the primary side pipe and the secondary side pipe, resulting in misalignment and troubles such as water leakage. In addition, the primary side piping and the secondary side piping may be misaligned during use due to the influence of the skeleton or the like. Even in the buried (soil) pipes of a detached house, a meter unit is used because the pipes are likely to be misaligned due to the influence of earth pressure or the like. When replacing a water meter, replacing a water stopcock, or repairing due to aging equipment, it is desired to replace the water meter with a meter unit that facilitates the replacement work of the water meter after the repair.

The piping device described in Patent Document 2 is known as a device corresponding to the misalignment of the primary side piping and the secondary side piping of an apartment house.
The piping device of Patent Document 2 includes a sleeve (4), a terminal straight pipe portion (12), a gasket (16), a packing (17), and a tightening nut (20), and has an upstream piping outlet (2). ) And the elbow (11) are connected to each other.
Further, the piping devices of different embodiments of Patent Document 2 include a sleeve (9), a terminal straight pipe portion (14), a gasket (18), a packing (19), and a tightening nut (21). It constitutes a pipe joint that connects the elbow (11) and the water meter unit inlet (7).

Japanese Unexamined Patent Publication No. 2018-053495 Japanese Unexamined Patent Publication No. 2005-213788

In the meter unit (1) of Patent Document 1, in order to shorten the longitudinal dimension, the water meter (M) is connected by a screw type, and both ends of the base portion (2) are raised to raise the elbow portion (5). Since it is supported from below, piping connection from the skeleton (lower part of the meter unit) side is not assumed. Therefore, in the meter unit (1) of Patent Document 1, a water meter (M) is installed in the primary side pipe and the secondary side pipe protruding upward from the floor (ground plane B) of the pipe shaft. There was a problem that it could not be done.

The piping device of Patent Document 2 is assumed to be newly installed on the floor (84) of the pipe shaft. Therefore, in the piping device of Patent Document 2, the water meter unit (85) connected to the upstream pipe (81) and the downstream pipe (90) extending upward is attached to the floor (84) of the pipe shaft. The structure is such that it is held by a stand attached to).

Therefore, the piping device of Patent Document 2 has the same amount as the meter unit (1) of Patent Document 1 in the primary side pipe and the secondary side pipe protruding upward from the floor (84) of the pipe shaft. There was a problem that the water device unit (85) could not be installed.

The piping device of Patent Document 2 includes a pipe joint that connects the upstream pipe outlet (2) and the elbow (11), and a pipe joint that connects the elbow (11) and the water meter unit inlet (7). Each is composed of a large number of components. Therefore, there is a problem that the number of parts, the number of assembling man-hours, and the man-hours for management are large, the structure is complicated, and the cost increases.

The present invention was created to solve such a problem, and the meter unit can be easily provided for the primary side pipe and the secondary side pipe provided upward from the floor of the pipe shaft. An object of the present invention is to provide a meter unit that can be installed, has a simple structure, and is low in cost.

In order to solve the above problems, the present invention presents an upper end portion of a primary side pipe provided upward from the floor of the skeleton and an upper end portion of a secondary side pipe provided upward from the floor of the skeleton. A meter unit that can be attached to a water meter arranged between the water meter and a rotating mechanism that is arranged on one side of the water meter in the flow path direction and can rotate about the pipe axis with respect to the water meter. The water meter is provided with an expansion / contraction mechanism that is arranged on the other side of the water meter in the flow path direction and can expand / contract in the flow path direction.

The present invention provides a low-cost meter unit having a simple structure in which a meter unit can be easily attached to a primary side pipe and a secondary side pipe provided upward from the floor of a pipe shaft. can do.

It is a front sectional view of the meter unit which concerns on embodiment of this invention. It is a top view of the meter unit. It is the enlarged left side view of the meter unit. It is a front view which shows the modification of the meter unit which concerns on embodiment of this invention. It is an enlarged left side view which shows the modification of the meter unit which concerns on embodiment of this invention.

The meter unit A according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3. When explaining the direction, the water stopcock 2 side shown in FIG. 1 is left (primary side), the elbow 17 side is right (secondary side), the water meter M side is up, and the base 1 side is down. To do.

<Meter unit>
The meter unit A includes a water stop valve 2 provided on the primary side pipe P1 side of the water meter M, a check valve 16 and an elbow 17 provided on the secondary side pipe P2 side of the water meter M, and a holding valve. It mainly has a base 1. The meter unit A is optimized as a repair meter unit so that the water meter M, the check valve 16 and the like can be easily replaced when they need to be replaced. The meter unit A is the same as the upper end of the primary side pipe P1 protruding upward from the floor 20a (floor surface of the pipe shaft) of the embedded skeleton 20 and the primary side pipe P1 via the length interval of the meter unit A. It is installed between the upper end portion of the secondary side pipe P2 arranged in.

Therefore, the primary side pipe P1 and the secondary side pipe P2 are installed in a so-called torii pipe shape with the water meter M interposed therebetween. The primary side pipe P1 and the secondary side pipe P2 are existing existing pipes installed on the floor 20a of the skeleton 20. By opening the water stop valve 2, tap water flows from the primary side pipe P1 side to the secondary side pipe P2 side via the water meter M.

<Water meter>
As shown in FIG. 1, the water meter M includes a primary side connection portion Ma formed at the end on the primary side pipe P1 side and a secondary side connection portion Mb formed at the end on the secondary side pipe P2 side. And a lid Mc that is pivotally supported on the upper side of the central portion so as to be openable and closable. On one side (primary side pipe P1) of the water meter M in the flow path direction, a rotating mechanism RM that can rotate about the pipe axis with respect to the water meter M is provided between the water meter M and the water stop valve 2. Have been placed. On the other side (secondary side pipe P2) of the water meter M in the flow path direction, an expansion / contraction mechanism TM that can expand and contract in the flow path direction is arranged between the water meter M and the elbow 17. Therefore, the meter unit A has a function of absorbing the deviation in the pipe axis direction and the deviation in the rotation direction.

The primary side connecting portion Ma is connected by crimping to the packing 11a on the primary side arranged via the slider handle 5 on the water meter M side of the water stopcock 2. The secondary side connecting portion Mb is connected by crimping to the secondary side packing 11b arranged on the elbow 17 with the check valve 16 interposed therebetween.

<Water stopcock>
The water stopcock 2 is an angle ball water stopcock for opening the faucet to allow water to flow from the primary side pipe P1 side to the water meter M side, or for closing the faucet to stop the water. The faucet 2 includes a faucet housing 2a, a faucet handle 2b, a spindle 2c, a faucet ball valve body 2d, seal members S1 and S2, a water supply side connection portion 2e, and a discharge side connection. It has a portion 2f and a detachable nut 2g.

The water stopcock housing 2a is a member that forms the outer case of the water stopcock 2, and is made of a bronze casting or the like.
The water stop valve handle 2b is an operating member for rotating the water stop valve 2 when opening and closing the water stop valve 2.
The spindle 2c is a shaft member extending downward from the shaft center portion of the water stop valve handle 2b.
The water stop valve ball valve body 2d is a valve body provided at the lower end of the spindle 2c. The water stop valve handle 2b, the spindle 2c, and the water stop valve ball valve body 2d are integrally fixed and rotate integrally.

The seal members S1 and S2 are annular resin members arranged on the left and right sides of the water stop valve ball valve body 2d.
The water supply side connection portion 2e is a screw portion into which a nut 41 (see FIG. 4) for attaching the primary side pipe P1 to the water stop valve 2 is screwed. The water supply side connection portion 2e is formed at the lower end portion of the water stopcock housing 2a.
The discharge side connecting portion 2f is a tubular female thread portion to which the water stopcock connecting member 6 is attached. The discharge side connection portion 2f is formed on the meter side of the water stopcock housing 2a.
The attachment / detachment nut 2g is a bag nut-shaped female thread portion that is screwed into the male thread portion formed at the upper end portion of the water stopcock housing 2a.

<Rotation mechanism>
As shown in FIG. 1, the rotation mechanism RM is a connecting device for rotatably connecting the water meter M to the water stop valve 2 connected to the primary side pipe P1. The rotation mechanism RM includes a slider case 3, a ring 4, a slider handle 5, a water stopcock connecting member 6, a screw 7, a meter piece 9, a retaining ring 10, a packing 11a, and a water stop member (O). Ring) O1 and O2 are provided.

The slider case 3 is a tubular member having a function as an outer housing of the rotation mechanism RM. The outer peripheral portion of the slider case 3 has an engaging protrusion 3a projecting from the lower side and a flange portion 3b (see FIG. 2) projecting from the front and rear side portions. The slider case 3 engages the engaging protrusion 3a with the primary side holding portion 1b of the base 1, and fixes the flange portion 3b (see FIG. 2) to the base main body 1a with the base fixture 81, whereby the primary side of the base 1 is primary. It is fixed to the upper part of the side. A ring 4, a slider handle 5, and a water stopcock connecting member 6 are rotatably arranged on the inner peripheral portion of the slider case 3.

As shown in FIG. 1, the ring 4 is a substantially C-shaped retaining ring formed of a metal spring material such as phosphor bronze. The inside of the ring 4 is fitted on the outer peripheral surface of the water stopcock connecting member 6, and the outside is fitted on the inner peripheral surface of the slider case 3, so that the water stopcock connecting member 6 can rotate with respect to the slider case 3. In addition to supporting it, it also supports it so that it cannot move in the axial direction.

The slider handle 5 is an operating member for an operator to rotate with a tool or the like when attaching the water stop valve 2 to the primary side connection portion Ma of the water meter M via the rotation mechanism RM (FIG. 3). reference). The slider handle 5 is composed of a tubular member rotatably arranged inside the slider case 3 and the water stopcock connecting member 6 with an O-ring O1 interposed therebetween. The water meter M side end of the slider handle 5 has a handle operating portion 5a on the outer peripheral portion, and a meter connecting portion 5b for accommodating the O-ring O2, the meter piece 9, and the primary side connecting portion Ma on the inner peripheral portion. doing. The slider handle 5 is made of a metal such as bronze casting.

The water stopcock connecting member 6 is a tubular member for rotatably connecting the water stopcock 2 and the slider case 3. In the water stop valve connecting member 6, the water stop valve 2 side is connected to the discharge side connecting portion 2f, and the slider case 3 side is connected to the slider case 3 via the ring 4.

The screw 7 is a fixing member for positioning the water stopcock connecting member 6 on the slider case 3.
The base fixtures 81 and 82 consist of, for example, hexagon socket head cap screws.
The meter piece 9 is, for example, a ring-shaped member made of polyphenylene sulfide resin. The meter piece 9 is rotated into the meter connecting portion 5b by the retaining ring 10 with the O-ring O2 mounted on the side surface on the water stop valve 2 side and the packing 11a for the meter mounted on the side surface on the water meter M side. It is arranged freely.
The packing 11a for the meter on the primary side is a rubber annular member that is crimped while the primary side connection portion Ma of the water meter M is pressed.

<Check valve>
As shown in FIG. 1, the check valve 16 allows water to flow from the water stop valve 2 to the elbow 17 side via the water meter M, but automatically closes and regulates the flow of water in the opposite direction. It is a valve that does. The check valve 16 includes a check valve main body 16a, a check valve cartridge 16b, a check valve valve body 16c, a meter receiver 12, a check valve retainer 13, a check valve spacer 15, and an O-ring. It is configured to include an O3, a spring 16i, a check valve seat 16h, and a disc 16j. The check valve 16 is interposed between the water meter M and the elbow 17.

The check valve body 16a is a tubular metal case member that functions as an outer housing of the check valve 16. The outer peripheral portion of the check valve main body 16a has an engaging projection 16f projecting from the lower side and a flange portion 16g (see FIG. 2) projecting from the front and rear side portions. The check valve main body 16a engages the engaging protrusion 16f with the secondary side holding portion 1c of the base 1, and fixes the flange portion 16g to the base main body 1a with the base fixture 82, whereby the secondary side of the base 1 is used. It is fixed to the top (see FIG. 2).

A male screw portion 16e into which the bag nut 14 is screwed is formed at the secondary side end portion of the outer peripheral portion of the check valve main body 16a. A check valve cartridge 16b, a check valve retainer 13, and an elbow 17 are installed on the inner peripheral portion of the check valve main body 16a. In the check valve main body 16a, the primary side end of the elbow 17 is inserted into the cylindrical male threaded portion 16e, and the bag nut 14 is screwed into the male threaded portion 16e via the telescopic packing 18 and the telescopic ring 19. ing. Therefore, the elbow 17 is attached to the secondary side of the water meter M so as to be expandable and contractible in the pipe axis direction (arrows b and c direction) with a check valve 16 interposed therebetween. The check valve main body 16a holds the secondary side of the water meter M by screwing the female screw portion 16d formed inside the primary side end portion with the male screw portion 13d of the check valve retainer 13.

The check valve cartridge 16b is a substantially tubular member that supports the check valve valve body 16c so as to be able to advance and retreat in the water flow direction. The check valve cartridge 16b is housed in the check valve main body 16a.
The packing 11b for the meter on the secondary side is a rubber annular member that is crimped while the secondary side connection portion Mb of the water meter M is pressed.

As shown in FIG. 1, the meter receiver 12 is a portion that supports the secondary side end portion of the water meter M from below in order to prevent the water meter M from falling. The meter receiver 12 is formed of a side-viewing arc-shaped projecting piece projecting from the lower end of the annular check valve retainer 13 when viewed from the side to the water meter M side.

The check valve retainer 13 is a substantially tubular member that supports the check valve cartridge 16b or the like inserted in the check valve main body 16a via an O-ring O3 or the like. The check valve retainer 13 includes a nut-shaped octagonal portion 13a and a partition portion 13b formed on the inner wall of the octagonal portion 13a and installed between the packing 11b, the check valve spacer 15, and the O-ring O3. , A cylindrical portion 13c formed on the right side of the octagonal portion 13a, and a male screw portion 13d on the outer peripheral portion of the cylindrical portion 13c. A meter receiver 12 and packing 11b are provided on the primary end surface of the check valve retainer 13.

The check valve seat 16h is an annular member that regulates the movement of the check valve valve body 16c in the primary side direction due to the repulsive force of the spring. The check valve seat 16h is engaged with the check valve cartridge 16b and is arranged between the check valve cartridge 16b and the check valve spacer 15.

<Expansion mechanism>
The expansion / contraction mechanism TM is a mechanism that holds the elbow 17 so as to be able to advance and retreat in the water flow direction (the pipe axis direction (arrows b and c direction) of the meter unit A). The expansion / contraction mechanism TM includes a check valve main body 16a, an O-ring O4, an elbow 17, a telescopic packing 18, a telescopic ring 19, a male screw portion 16e of the check valve main body 16a, and a bag nut 14. It is configured. Therefore, the expansion / contraction mechanism TM includes a trapezoidal annular expansion / contraction packing 18 in cross section and an L-shaped expansion / contraction ring 19 in cross section, and the expansion / contraction packing 18 is crushed to position and fix the elbow 17. By doing so, the elbow 17 can be expanded and contracted so that the position can be adjusted in the flowing water direction.

The male screw portion 16e is formed on the outer peripheral surface of the cylindrical portion formed at the secondary side end portion of the check valve main body 16a. Inside the cylindrical male screw portion 16e, the primary side end portion of the elbow 17 equipped with the O-ring O4 is inserted. When the bag nut 14 is screwed into the male threaded portion 16e, the telescopic packing 18 and the telescopic ring 19 are interposed between the secondary end of the male threaded portion 16e and the bag nut 14. The secondary end of the male threaded portion 16e serves to hold and support the telescopic packing 18.

The telescopic packing 18 and the telescopic ring 19 are fitted onto the outer peripheral portion of the elbow 17, and are sandwiched between the tip of the male screw portion 16e on the secondary side and the bag nut 14. The expansion / contraction packing 18 and the expansion / contraction ring 19 are made of members such as POM resin and synthetic rubber.
The bag nut 14 is a fixing member screwed into the male threaded portion 16e with the telescopic packing 18 and the telescopic ring 19 interposed at the secondary end of the check valve main body 16a.

<Elbow>
The elbow 17 is an L-shaped piping joint. The elbow 17 is connected to the check valve 16 in a horizontal state with the primary side connected to the check valve 16 in a horizontal state, and is connected to the secondary side pipe P2 with the secondary side facing downward. An O-ring O4, which is a rubber sealing material for preventing water leakage, is fitted on the outer peripheral portion of the primary side of the elbow 17, and a key-shaped protrusion (not shown) extending in the axial direction is provided. .. A male screw portion is formed on the outer peripheral portion of the secondary side of the elbow 17 to which a nut 42 (see FIG. 4) for attaching the secondary side pipe P2 to the elbow 17 is screwed.

<Base>
As shown in FIG. 1 or 2, the base 1 is a holding base for holding the meter unit A from below. The base 1 has a base main body 1a, a primary side holding portion 1b, a secondary side holding portion 1c, a protruding piece 1d, a fixture engaging portion 1e, and base fixtures 81 and 82. .. As shown in FIGS. 1 and 2, the base 1 is directly mounted on the floor 20a of the skeleton 20 such as a pipe shaft with a fixture 30, or anchor bolts or the like (not shown) are mounted on the floor 20a. It is fixed by intervening.

The base body 1a is made of a metal casting member formed in a substantially rectangular shape (see FIG. 2) in a plan view.
The primary side holding unit 1b is a holding unit that holds the primary side of the meter unit A. The primary side holding portion 1b is an engaging portion on which the engaging projection 3a projecting from the lower side of the outer peripheral portion of the slider case 3 is mounted. The primary side holding portion 1b is formed in the upper central portion of the primary side end portion of the base body 1a.

The secondary side holding unit 1c is a holding unit that holds the secondary side of the meter unit A. The secondary side holding portion 1c is an engaging portion on which the engaging projection 16f projecting from the lower side of the outer peripheral portion of the check valve main body 16a is mounted. The secondary side holding portion 1c is formed in the upper central portion of the secondary side end portion of the base main body 1a.

As shown in FIG. 2, the projecting piece 1d is a plate-shaped portion having a substantially quadrangular shape in a plan view, which is projected from four side surfaces of the front and rear ends of the primary side and the secondary side of the base 1.
The fixture engaging portion 1e is a notch groove into which a fixture 30 such as a bolt is inserted. The fixture engaging portion 1e is formed with a U-shaped notch in a plan view from the tip end of the projecting piece 1d toward the base end portion side.
The fixture 30 shown in FIG. 3 is composed of a bolt that is directly screwed to the floor 20a, a bolt that is fully screwed so as to protrude from the floor 20a, and the like. The fixture 30 is not particularly limited as long as it can fix the base 1 to the floor 20a. The fixture 30 shown in FIG. 3 is an example thereof, and includes anchor bolts that are screwed into and fixed to an anchor plug 31 inserted into a fixing hole formed in the floor 20a.

[Action]
Next, with reference mainly to FIGS. 1 to 3, the case where the operation of the meter unit A according to the embodiment of the present invention is attached between the existing primary side pipe P1 and the secondary side pipe P2 is taken as an example. I will explain it by listing it.

First, the fastening member of the water meter (not shown) M attached between the existing primary side pipe P1 and the secondary side pipe P2 is loosened, and the water meter or the like (not shown) is removed.

Next, the water supply side connection 2e of the water stopcock 2 provided with the rotation mechanism RM is connected to the upper end of the primary side pipe P1, and the nut 41 (see FIG. 4) is tightened with a tool such as a spanner to perform the primary. The water stopcock 2 is connected to the side pipe P1. Subsequently, the water discharge side connection portion 17a of the elbow 17 provided with the check valve 16 is connected to the upper end portion of the secondary side pipe P2, and the nut 42 (see FIG. 4) is tightened with a tool such as a spanner. The elbow 17 is connected to the next side pipe P2.

When the water meter M is installed between the primary side pipe P1 and the secondary side pipe P2, the position between the primary side pipe P1 and the secondary side pipe P2 is deviated in the rotation (arrow a) direction. Can fine-tune the position in the rotation (arrow a) direction. After the fine adjustment, the finely adjusted position state can be maintained by tightening the screw 7.

Further, when the water meter M is installed between the primary side pipe P1 and the secondary side pipe P2, the position between the primary side pipe P1 and the secondary side pipe P2 is in the pipe axis (arrows b, c) direction. If it is misaligned, the position in the pipe axis (arrows b and c) direction can be finely adjusted by loosening or tightening the cap nut 14.

Next, the secondary side connection portion Mb of the water meter M is placed on the meter receiver 12. Subsequently, the primary side connection portion Ma is fitted into the meter connection portion 5b. Then, the slider handle 5 is rotated to move the meter piece 9 or the like to the water meter M side, the primary side connection portion Ma is crimped to the packing 11a on the primary side, and the water meter M is connected to the rotation mechanism RM. .. At this time, the packing 11b on the secondary side is crimped to the connection portion Mb on the secondary side to connect with the check valve 16. Therefore, the meter unit A has an excellent function as a repair meter unit.

As described above, in the present invention, as shown in FIG. 1, the upper end of the primary side pipe P1 provided upward from the floor 20a of the skeleton 20 and the upper end of the skeleton 20 from the floor 20a upward. It is a meter unit that can be attached to the water meter M arranged between the upper end of the provided secondary side pipe P2, and is arranged on one side of the water meter M in the flow path direction with respect to the water meter M. It is provided with a rotation mechanism RM that can rotate about the pipe axis, and a telescopic mechanism TM that is arranged on the other side of the water meter M in the flow path direction and can expand and contract in the flow path direction.

According to this configuration, the meter unit A includes the rotation mechanism RM and the expansion / contraction mechanism TM, so that the primary side pipe P1 and the secondary side pipe P protruding from the floor 20a of the skeleton 20 are the cores. Even if the water meter M is misaligned (axis misalignment) and position misalignment (distance misalignment), the water meter M can be installed by rotating it around the pipe axis to adjust the position, and further expand and contract in the flow path direction. It can be installed by adjusting the position. Therefore, in the meter unit A, the meter unit A can be easily attached to the primary side pipe P1 and the secondary side pipe P2 provided upward from the floor 20a of the skeleton 20 (pipe shaft). , A low-cost meter unit A having a simple structure can be provided.

Further, the rotary mechanism RM is connected to the water stop valve 2 on the primary side pipe P1, the telescopic mechanism TM is connected to the elbow 17 on the secondary side pipe P2 side, or the rotary mechanism RM is connected to the secondary side pipe. The elbow 17 is connected to the P2 side, and the water stop valve 2 is connected to the primary side pipe P1 side of the expansion / contraction mechanism TM.

According to such a configuration, in the meter unit A, the water stop valve 2 on the primary side pipe P1 side can be rotatably attached by the rotation mechanism RM. Further, in the meter unit A, the elbow 17 of the secondary side pipe P2 can be flexibly attached in the axial direction by the expansion / contraction mechanism TM. Further, the rotation mechanism RM and the expansion / contraction mechanism TM may be appropriately attached in reverse directions. As a result, the meter unit A can adjust the misalignment of the entire meter unit A at once by adjusting the misalignment of one part of the rotation mechanism RM. Further, the meter unit A can adjust the distance deviation of the entire meter unit A at once by adjusting the distance deviation of one place of the expansion / contraction mechanism TM. Therefore, since the meter unit A has a small number of parts and man-hours for position adjustment for position adjustment, the structure is simple and the cost can be reduced.

Further, on one side of the rotation mechanism RM side or the expansion / contraction mechanism TM side, a slider handle 5 is interposed on the water meter M side and is arranged at the tip of the water meter M side, and is arranged on one side of the water meter M in the flow path direction. A primary side packing 11a (one side packing) is provided to be crimped to the primary side connection part Ma (one side connection part) when connecting to the primary side connection part Ma (one side connection part) formed at the end of the water supply. On the other side of the rotation mechanism PM side or the expansion / contraction mechanism TM side, a check valve 16 is interposed on the water meter M side and is arranged at the tip of the water meter M side, and the other side in the flow path direction of the water meter M. Secondary side packing 11b (the other side) that is crimped to the secondary side connection part Mb (the other side connection part) when connecting to the secondary side connection part Mb (the other side connection part) formed at the side end. Packing) is provided.

According to such a configuration, when the water meter M is attached to the meter unit A, the primary side connection portion Ma (one side connection portion) is pushed into the primary side packing 11a side and crimped to be crimped, and the secondary side connection portion Mb is formed. The primary side connection portion Ma and the secondary side connection portion Mb can be easily attached to the slider handle 5 and the elbow 17 by pushing the (other side connection portion) into the packing 11b side on the secondary side and crimping the joint portion. Therefore, since the meter unit A has a simple structure for attaching the water meter M to the water stopcock 2 and the elbow 17, the attachment work can be simplified and the cost can be reduced.

Further, as shown in FIG. 1, the meter unit A includes a base 1 for holding the meter unit A from below, and a fixture 30 for fixing the meter unit A to the skeleton 20 is provided on the side portion of the base 1. Has a fixture engaging portion 1e to which the is attached.

According to such a configuration, the meter unit A engages with a base 1 for holding the meter unit A from below and a fixture 30 for providing a fixture 30 for fixing the base 1 to the floor 20a or the like on the side portion of the base 1. It has parts 1e and. Therefore, in the meter unit A, after attaching the water stop valve 2 and the elbow 17 to the primary side pipe P1 and the secondary side pipe P2, the base 1 can be easily attached to the skeleton 20 or the floor 20a. Further, the meter unit A can easily connect the pipes to the primary side pipe P1 and the secondary side pipe P2 provided from the lower side to the upper side.

[Modification example]
The meter unit A according to the present embodiment has been described in detail with reference to FIGS. 1 to 3, but the present invention is not limited thereto and is appropriately modified without departing from the gist of the present invention. It is possible. The configurations already described are designated by the same reference numerals and the description thereof will be omitted.

FIG. 4 is a front view showing a modified example of the meter unit A according to the embodiment of the present invention. FIG. 5 is a left side view showing a modified example of the meter unit A according to the embodiment of the present invention.

As shown in FIGS. 4 and 5, the primary side pipe P1 and the secondary side pipe P2 may be extended so as to project upward from the floor 20a of the skeleton 20. Further, the base 1 may be installed above the floor 20a of the skeleton 20 at appropriate intervals.

In that case, the fixture 30A comprises an implant bolt 30Aa and two nuts 30Ab, 30Ac. The lower end of the implanting bolt 30Aa is embedded in the floor 20a of the skeleton 20, and the upper end is inserted into the fixture engaging portion 1e of the protruding piece 1d. The nuts 30Ab and 30Ac are screwed into the implantation bolt 30Aa, and the protruding piece 1d is sandwiched between the upper nut 30Ab and the lower nut 30Ac.

With this configuration, even when the primary side pipe P1 and the secondary side pipe P2 extend upward from the floor 20a of the skeleton 20, the meter unit A is held in the same manner as in the above embodiment. can do.

[Other variants]
Further, the meter unit A shown in FIG. 1, the primary side connection portion Ma and the secondary side connection portion Mb of the water meter may be of a screw connection type.

1 Base 1e Fixture engagement part 2 Water stopcock 5 Slider handle 11a Packing (one side packing)
11b packing (packing on the other side)
13 Check valve retainer 16 Check valve 17 Elbow 20 Frame 20a Floor 30, 30A Fixture A Meter unit M Water meter Ma Primary side connection (one side connection)
Mb secondary side connection (other side connection)
P1 Primary side piping P2 Secondary side piping RM Rotation mechanism TM Expansion and contraction mechanism

Claims (4)

Attach to a water meter placed between the upper end of the primary side pipe provided upward from the floor of the skeleton and the upper end of the secondary side pipe provided upward from the floor of the skeleton. It is a meter unit that can be used
A rotating mechanism that is arranged on one side of the water meter in the flow path direction and can rotate about the pipe axis with respect to the water meter.
A meter unit characterized by having an expansion / contraction mechanism arranged on the other side of the water meter in the flow path direction and expandable / contractible in the flow path direction. In the rotating mechanism, a water stopcock is connected to the primary side piping side.
An elbow is connected to the secondary piping side of the expansion / contraction mechanism.
Or
In the rotation mechanism, an elbow is connected to the secondary piping side, and the elbow is connected.
The meter unit according to claim 1, wherein the expansion / contraction mechanism is characterized in that a water stop valve is connected to the primary side piping side. On one side of the rotation mechanism side or the expansion / contraction mechanism side, a slider handle is interposed on the water meter side and is arranged at the tip of the water meter side, and one end of the water meter in the flow path direction. When connecting to the one-sided connecting portion formed in, a one-sided packing for crimping to the one-sided connecting portion is provided.
On the other side of the rotation mechanism side or the expansion / contraction mechanism side, a check valve is interposed on the water meter side and is arranged at the tip of the water meter side, and the other end of the water meter in the flow path direction. The meter unit according to claim 1 or 2, wherein a packing on the other side is provided to be crimped to the connecting portion on the other side when connecting to the connecting portion on the other side formed in the portion. A base for holding the meter unit from below is provided.
Any one of claims 1 to 3, wherein the side portion of the base has a fixture engaging portion to which a fixture for fixing the meter unit to the skeleton is attached. The meter unit described in the section.

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