JP2017133250A - Meter unit for tap water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a meter unit for tap water which is the meter unit for tap water for meter fastening for tap water, which can be connected surely while changing the direction according to primary side piping without separately providing a fastening component for piping connection on the primary side, and which has secured compactness as a whole by preventing the increase in size on the primary side piping connection side.SOLUTION: A primary side mounting member 3 and a secondary side mounting member 4 are disposed for crimp-fixing a meter 5 for tap water in the longer direction of a base body 2. The primary side mounting member 3 includes: a slide case 20 provided at a base body 2; a crimping member 21 movably provided at the slide case 20; and a locking part 30 comprising an elbow member 22 provided at the slide case 20 so that it can be screwed, and provided on an inner peripheral surface 24 of the slide case 20. The elbow member 22 includes a contact part 45 for coming into contact with the locking part 30 when screwing the elbow member 22. A predetermined gap S1 is provided between the locking part 30 and the contact part 45 when disposing the primary side mounting member 3 on the base body 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to, for example, a water meter unit for mounting a water meter for measuring the amount of water used, and particularly relates to a primary side pipe connection portion of the meter unit.

  In recent years, for example, when installing a new water meter for each house in an apartment house, it is often required to use a water meter unit. In addition, a water meter unit is also used in a detached house. Often done. This type of meter unit can be fixed while changing the orientation of the connection side in accordance with the primary side pipe in order to reliably connect the primary side pipe when laying.

  For example, in the meter units of Patent Document 1 and Patent Document 2, an elbow is rotatably attached as a connection member for primary side pipe connection, and a set screw or a parallel pin is tightened from a direction perpendicular to the rotation axis of the elbow. ing. As a result, the elbow rotated in accordance with the direction of the primary side pipe is fixed by the set screw or the parallel pin in a retaining state, and the primary side pipe can be connected to the elbow.

  On the other hand, in Patent Document 3 and Patent Document 4, an elbow, which is a connecting member, is rotatably attached to a holder for holding a water meter via a retaining ring in a state in which the elbow is prevented from coming off. The rotation is prevented by being fixed in a predetermined direction by a set screw or the like through the plurality of locking holes and screw holes. In this case, the locking hole and the screw hole are provided in a flange or a locking piece formed in the elbow, and the elbow can be held in a predetermined direction by changing the fixing position of the flange or the locking piece.

In Patent Document 5, a tightening nut is screwed to a sleeve formed on the inlet side of the water meter unit via a gasket, and the elbow can be fixed in a predetermined direction by tightening the tightening nut.
There is also generally known a water meter unit in which a union nut is provided on the primary side, and an elbow having a union screw can be connected in a predetermined direction via the union nut.

Japanese Patent Laying-Open No. 2015-52215 JP 2007-322387 A Japanese Patent No. 4291808 Japanese Patent No. 3612483 Japanese Patent No. 4395724

In Patent Document 1 to Patent Document 4, when the elbow is tightened and fixed using another tightening part such as a set screw or a parallel pin, in addition to the increase in the number of parts, a female screw or a lock on the mounting part of the meter unit Hole processing is also required separately. When assembling the meter unit, the assembly man-hours due to the incorporation of set screws and parallel pins also increase, and there is a problem that the work becomes complicated and the work time increases.
In particular, in Patent Document 1 and Patent Document 2, since a set screw or a parallel pin is tightened from a direction perpendicular to the rotation axis of the elbow, processing from a direction different from the insertion hole of the elbow is required. Becomes complicated and the assembly work becomes more complicated. If the elbow is fixed from the direction perpendicular to the rotation axis, the sealing O-ring may be deformed or eccentric, causing leakage, or the rotation operation of the water meter tightening handle may become heavy. It is necessary to improve the dimensional accuracy of parts.
Furthermore, if a set screw or parallel pin is provided, assembly may be forgotten, lost, or intentionally loosened by mischief.In these cases, the elbow may tilt or jump out due to water pressure. The safety is reduced and the quality of the meter unit is reduced.

  On the other hand, when the elbow is connected using a tightening nut or a union nut as in Patent Document 5, in order to provide a sleeve, a tightening nut, or a union nut on the water meter unit inlet side, The primary side connecting portion is extended in the axial direction. Thereby, the dimension from a primary side connection part to a secondary side connection part may become large, the connection of primary side piping may be restrict | limited, and the whole may enlarge and the installation place of a meter unit may be restricted.

  The present invention has been developed in order to solve the above-mentioned problems, and the object of the present invention is a water meter unit for fixing a water meter, and a fastening part for connecting a pipe on the primary side is provided. To provide a water meter unit that can be securely connected while changing the direction according to the primary side piping without being separately provided, and prevents the enlargement of the primary side piping connection side and ensures the overall compactness. .

  In order to achieve the above object, the invention according to claim 1 is provided with a primary side mounting member and a secondary side mounting member, which are provided with a primary side mounting member that crimps and fixes a water meter in the longitudinal direction of the base body. Is composed of a slide case provided on the base body, a crimping member provided movably on the slide case, and an elbow member provided so as to be screwable to the slide case, and a locking portion provided on the inner peripheral surface of the slide case, The elbow member has an abutting portion that abuts the engaging portion when the elbow member is screwed, and when the primary side mounting member is disposed on the base body, A water meter unit having a predetermined gap therebetween.

  The invention according to claim 2 is provided with a primary side mounting member and a secondary side mounting member for crimping and fixing a water meter in the longitudinal direction of the base body, and the primary side mounting member is a slide provided on the base body. It consists of a case, a crimping member movably provided on the slide case, and an elbow member provided so as to be able to be screwed to the slide case, and comes into contact with the screw-side end surface of the elbow member when screwing the elbow member. A water meter unit that includes a contact surface of a crimping member and includes a predetermined gap between the screw-side tip surface and the contact surface when the primary side mounting member is disposed on the base body. .

  In the invention according to claim 3, a sliding resistance member is interposed between the inner peripheral surface of the slide case and the outer peripheral surface of the elbow member, and the elbow member can be temporarily fixed at an arbitrary position by the sliding resistance member. This is a water meter unit.

  The invention which concerns on Claim 4 is the meter unit for water supply which provided this elbow member so that engagement to a part of base body was possible on the rotation track | orbit of an elbow member.

  The invention according to claim 5 is a water meter unit in which a mounting portion is provided on the slide case integrally or separately, and the mounting portion is mounted on the primary side of the base body.

  According to the first aspect of the present invention, there is provided a water meter unit for adhering a water meter, and when the primary side mounting member is disposed on the base body, the locking portion on the inner peripheral surface of the slide case, and the elbow member By providing a predetermined gap with the abutting portion, the elbow member can be reliably connected by changing the orientation of the elbow member according to the orientation of the primary pipe by rotating the elbow member. The overall size can be secured by preventing the side mounting member from being enlarged or extended. As a result, it is not necessary to separately provide tightening parts such as set screws and parallel pins for connecting the piping on the primary side, so the increase in the number of parts can be suppressed, and it is also necessary to process the tightening parts on the slide base. Absent. Since the locking portion of the slide case is provided in the screwing direction of the elbow member, these machining axes are the same, making it easy to mold and simplifying assembly. Since the elbow member is not applied with a force offset from the circumferential direction, sealing performance can be ensured, parts can be prevented from being forgotten or lost, and can be prevented from being intentionally loosened due to mischief. Since there is no fear that the elbow member tilts or jumps out due to water pressure, the safety is improved and the overall quality is enhanced.

  According to the second aspect of the present invention, when the primary side mounting member is disposed on the base body, in addition to the gap between the locking portion of the slide case and the contact portion of the elbow member, the screw of the elbow member The elbow member can be rotated and adjusted in a predetermined direction through a predetermined gap provided between the mating front end surface and the contact surface of the crimping member. As a result, the rotation of the elbow member can be restricted until either the locking portion and the abutting portion, or the screw engagement side tip surface and the abutting surface abut, and the contact between the locking portion and the abutting portion can be restricted. The rotation restricting position of the elbow member can be arbitrarily set by bringing the front end surface of the screwing side into contact with the contact surface before contact.

  According to the invention of claim 3, the elbow member is temporarily fixed with the sliding resistance member while aligning from the circumferential direction to prevent deformation and eccentricity of the elbow member to prevent leakage, and to the elbow member The elbow member can be held in a predetermined direction by a manual rotation operation while preventing a force offset from the circumferential direction, and the elbow member can be firmly connected corresponding to the direction of the external piping.

  According to the fourth aspect of the present invention, the elbow member is rotated so as to be engageable with a part of the base body, so that the base body serves as a stopper and restricts the rotation of the elbow member one or more times to prevent the elbow member from coming off. The elbow member can be reliably and firmly connected while rotating the elbow member corresponding to the orientation of any primary side piping.

  According to the invention which concerns on Claim 5, a slide case can be attached to the primary side of a base body via an attaching part, and according to the kind and magnitude | size of a water meter, the length of a base body, etc. The primary side attachment member can be attached at a predetermined position and can be provided so as to be connectable to the primary side pipe while adjusting the distance between the primary side pipe and the primary side pipe. Since the attachment portion can be formed in any manner according to the installation location and the piping situation, the slide case and the base body can be simplified.

It is a partially cutaway side view showing an embodiment of a water meter unit in the present invention. It is a principal part expanded sectional view of FIG. It is a principal part expanded sectional view which shows the state which rotated the elbow member of FIG. It is a partially omitted left side view showing the rotation state of the elbow member. It is sectional drawing which shows other embodiment of the water meter unit of this invention. It is sectional drawing which shows other embodiment of the water meter unit of this invention.

Hereinafter, embodiments of a water meter unit according to the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the meter unit of the present invention, and FIGS. 2 and 3 show the vicinity of the primary side in which a part of the water meter unit of FIG. 1 is omitted.
In the figure, a water meter unit (hereinafter referred to as a meter unit body 1) has a base body 2, a primary side mounting member 3, and a secondary side mounting member 4, and these primary side mounting member 3 and secondary side. The attachment member 4 is disposed in the longitudinal direction of the base body 2, and a water meter 5 is provided between the attachment members 4 so as to be fixed by crimping. The base body 2 is provided with a support member 6 for primary side support of the water meter 5 and a support portion 7 for secondary side support, which are detachable. The distance can be adjusted according to the size of 5 and the distance between the surfaces.

As shown in FIG. 1, the base body 2 is formed in a long shape by press drawing from a metal plate material such as steel. The base body 2 has a base portion 12 that is open downward and has a substantially U-shaped cross section having a hanging surface 10 and an upper surface 11 on both sides, and flange portions 13 and 13 on both sides of the base portion 12. . Two insertion holes 15 for inserting bolts are formed near both ends of the upper surface 11 of the base body 2, and a notch groove (not shown) for fixing the anchor bolt is formed at the center position of the outer end of the flange portion 13. The
In general, the drawing process refers to a pressing process in which a plane is contracted to form a seamless container shape.

  The primary side attachment member 3 includes a slide case 20, a crimping member 21, and an elbow member 22, and a handle 23 is attached to the primary side attachment member 3.

  The slide case 20 is formed of an appropriate metal, for example, by casting, and an internal thread portion 25 is provided on the inner peripheral surface 24 of the slide case 20 in the axial direction for crimping and fixing the water meter 5, A mounting hole 26 for mounting the elbow member 22 and a parallel female screw 27 having a relatively small pitch are formed on the mounting side of the elbow member 22 and the mounting hole 25. A locking portion 30 is provided between the mounting hole 26 and the parallel female screw 27 so as to project from the inner peripheral side. In this embodiment, the locking portion 30 is an end portion of the parallel female screw 27. Provided by an incomplete thread on the side.

  On the base body 2 side of the slide case 20, an attachment portion 31 extends and is provided integrally, and the attachment portion 31 is provided with a female screw 32. The attachment portion 31 is attached to the primary side of the base body 2 with two fixing bolts 33 made of hexagon socket head bolts, whereby the slide case 20 is provided at a predetermined position on the upper surface 11 of the base body.

  In FIG. 2, the crimping member 21 is formed in a substantially cylindrical shape, and a male screw portion 35 is formed on the outer peripheral side of the crimping member 21. The crimping member 21 is provided on the slide case 20 so as to be movable at a predetermined stroke by screwing the male screw portion 35 and the female screw portion 25, and the primary side of the water meter 5 can be crimped. The crimping member 21 has different outer diameters on the insertion side to the inner periphery of the elbow member 22 and the screwing side to the slide case 20, and a stepped surface 36 is provided at the boundary between them. Reference numeral 36 denotes a contact surface with an elbow member 22 described later.

  On the pressure bonding side of the water supply meter 5 of the pressure bonding member 21, a substantially cylindrical pressure bonding portion 37 having a diameter larger than that of the male screw portion 35 is provided, and a pressure bonding surface is provided on the surface of the pressure bonding portion 37 facing the water meter 5. For example, a hexagonal polygonal portion 39 is formed on the outer periphery. A mounting groove 40 is provided on the outer periphery of the end of the crimp member 21 on the elbow member 22 side, and a sealing O-ring 41 is mounted in the mounting groove 40.

  The elbow member 22 has an appearance that is bent in a substantially L shape so that it can be connected to the external pipe 48 such as a water stopper shown in FIG. A parallel male screw 42 having a relatively small pitch that can be screwed into the 20 parallel female screws 27 is provided.

  In the elbow member 22, a cylindrical mounting portion 43 is formed on the rear side after the male screw 42, and the mounting portion 43 is formed to have an outer diameter that can be fitted into the mounting hole 26. On the rear end side of the male screw 42, a contact portion 45 comprising an end face of the mounting portion 43 is provided. The contact portion 45 is provided with a larger diameter than the male screw 42, and is parallel to the male screw 42 and the female screw. 27, when the elbow member 22 is screwed into the slide case 20 via 27, it is provided so as to be able to be locked with the locking portion 30. When the primary attachment member 3 is disposed on the base body 2, a predetermined gap S <b> 1 is provided between the locking portion 30 and the contact portion 45.

  An annular concave groove 46 is formed on the outer periphery of the mounting portion 43 of the elbow member 22, and the sliding resistance member 50 is mounted in the concave groove 46. Thereby, the sliding resistance member 50 is interposed between the inner peripheral surface 24 of the slide case and the outer peripheral surface 51 of the elbow member, and the elbow member 22 manually rotated by the sliding resistance member 50 is temporarily fixed at an arbitrary position. It is fixed.

A seal surface 52 is formed on the inner periphery of the mounting portion 43 of the elbow member 22, and the insertion side outer peripheral surface portion 53 of the crimping member 21 is inserted into the seal surface 52. In this case, the elbow member 22 and the pressure-bonding member 21 are sealed by the O-ring 41 being in liquid-tight contact with the sealing surface 52, and external leakage between the slide case 20 and the elbow member 22 is caused by the O-ring 41, External leakage between the slide case 20 and the crimping member 21 is also prevented.
A gasket seal surface 54 is provided on the connection end surface side of the elbow member 22 with the external pipe 48, and a union nut 55 is mounted on the outer periphery of the connection side with the external pipe 48.

  The sliding resistance member 50 is provided in an annular shape using, for example, an elastic material such as rubber, resin, or fiber, and generates a frictional force with the slide case 20 when the elbow member 22 rotates. The elbow member 22 is provided so as to be manually rotatable while suppressing rotation, and the elbow member 22 can be held at an arbitrary rotational position where the manual operation is stopped. In order to ensure this function, the sliding resistance member 50 can exhibit a sliding resistance that can be opposed to the axial driving force when the elbow member 22 is screwed, and when the rotation is stopped, a predetermined sliding resistance is given in the circumferential direction. The elbow member 22 is made of a material that can be used to hold the elbow member 22 in position. The sliding resistance member 50 may have a shape other than an annular shape as long as the elbow member 22 can be held in position, and sealing performance is not required.

  The elbow member 22 is rotatably provided via the male screw 42 and the parallel female screw 27 after being attached to the slide case 20. In this case, when the primary side attachment member 3 having the elbow member 22 is attached to the base body 2, the elbow member 22 is more than the contact state between the engagement portion 30 and the contact portion 45, which is the screwing limit. In a state where the pitch is returned by about 1 to 1.5 pitches, in FIG. 4, the gasket seal surface 54 is provided so as to be adjustable from a state in which the gasket seal surface 54 is directed upward to a horizontal state rotated at least 90 ° clockwise and counterclockwise. It is done.

  In the present embodiment, as shown in FIG. 4, the union nut 55 of the elbow member 22 is provided on the rotation track of the elbow member 22 so as to be able to engage (contact) with a part of the base body 2. The elbow member 22 rotates to the state shown in FIGS. 4A and 4B so that the gasket seal surface 54 can be rotated more than 90 ° from right to left and right.

  Instead of the locking structure between the contact portion 45 of the elbow member 22 and the locking portion 30 of the slide case 20 as described above, the elbow member 22 is provided with a screw-end side end surface 60, and this tip The surface 60 may be provided so as to be able to contact the contact surface 36 of the crimping member 21 when the elbow member 22 is screwed to the slide case 20. In this case, when the primary attachment member 3 is disposed on the base body 2, a predetermined gap S <b> 2 is provided between the screwing-side distal end surface 60 and the contact surface 36. The gap S2 may be different from the size of the gap S1 between the locking part 30 and the contact part 45.

  The handle 23 is formed with a hexagonal portion that can be fitted to the polygonal portion 39 on the inner peripheral side, and is integrated with the crimping member 21 by fitting the polygonal portion 39 to the hexagonal portion. Thus, when the handle 23 is rotated, the rotational force is transmitted to the crimping member 21, and the crimping member 21 can be advanced and retracted with respect to the slide case 20 via the male screw portion 35 and the female screw portion 25.

  The handle 23 is made of, for example, a resin such as polyacetal, is attached to the polygonal portion 39 by press-fit fitting, and is firmly integrated with the crimping member 21. The handle 23 is provided with a through hole (not shown), and the handle 23 can be fixed through the through hole after the water meter 5 is crimped.

  With the structure described above, the primary side attachment member 3 is rotated by the rotation operation of the handle 23 and the pressure bonding member 21 is rotated. By this rotation, the primary side of the water meter 5 is pressure bonded. Alternatively, the pressure bonding can be released, and the water meter 5 can be attached and detached between the primary side mounting member 3 and the secondary side mounting member 4 when the pressure bonding is released.

  On the other hand, the secondary side attachment member 4 has a case member 62, a fixing member 63, and a check valve (not shown). Similar to the slide case 20 on the primary side, the case member 62 is formed by casting, for example, and is provided with a female screw (not shown) that communicates with the insertion hole 15 of the base body 2. The case member 62 and the base body 2 are integrated by screwing the fixing bolt 33 onto the female screw in the same manner as the primary side.

  The fixing member 63 is formed in a substantially cylindrical shape and has a crimping surface 64 that is in pressure contact with the secondary side of the water meter 5. The check valve is provided in an appropriate internal structure, and can prevent backflow from the secondary side. The check valve is built in the case member 62, and the fixing member 63 is screwed onto the case member 62 from above.

When the water meter 5 is crimped and fixed to the meter unit main body 1, the water meter 5 is placed on the support member 6 and the support portion 7 as shown in FIG. Rotate. Thereby, the crimping member 21 advances in the crimping direction while rotating together with the handle 23, and the water meter 5 placed on the support member 6 and the support portion 7 can be crimped and fixed while securing the alignment state. In this case, the sealing surfaces 38 and 64 can ensure the sealing and sealing performance, and even if the handle 23 is to be rotated more than necessary, the handle 23 and the crimping member 21 come into contact with the support member 6 and the advancement of the handle 23 is prevented. Definitely blocked.
On the other hand, when the water meter 5 is removed by replacement or the like, the water meter 5 can be attached or detached by rotating the handle 23 counterclockwise in FIG.

  The engaging portion 30 of the slide case inner peripheral surface 24 is not necessarily provided adjacent to the parallel female screw 27. If the contact portion 45 of the elbow member 22 can contact, the slide case inner peripheral surface It can be provided at any 24 positions. On the other hand, the abutting portion 45 can be provided other than the end face of the mounting portion 43 as long as it can abut on the locking portion 30.

  Moreover, the attachment part 31 may be provided separately with respect to the slide case 20, for example, may be provided integrally on the base body 2 side. The base body 2 may be provided by a processing means other than press processing. For example, the attachment portion 31 may be integrally formed by casting.

Subsequently, an assembling method and operation of the meter unit in the embodiment of the present invention will be described.
First, the sliding resistance member 50 is mounted in the concave groove 46 of the elbow member 22, and the male screw 42 of the elbow member 22 is screwed into the parallel female screw 27 of the slide case 20 before the crimping member 21 is mounted, as shown in FIG. Then, the contact portion 45 is brought into contact with the locking portion 30. Thus, when the contact part 45 contacts the locking part 30, the screwing of the advanced elbow member 22 into the slide case 20 is completed. In FIG. 3 and FIG. 2, the slide case 20 to be mounted later is also illustrated for convenience of explanation to be described later.

  From this screwing completion state, the elbow member 22 is reversed in the direction opposite to the screwing direction, and the screw pitch is retracted by about 1 to 1.5. As shown in FIG. It becomes the state which became.

  In this case, the sliding resistance member 50 is mounted on the outer periphery of the elbow member 22, and the elbow member 22 is in sliding contact with the inner peripheral surface 24 of the slide case in a state where the sliding resistance member 50 is compressed and deformed. This can be maintained while temporarily fixing and fixing at an arbitrary position, and the temporary fixing of the elbow member 22 to the slide case 20 is completed. The sliding resistance member 50 has a holding force that allows an operator to rotate the elbow member 22 against the frictional force, and maintains the orientation of the elbow member 22 even after the primary side pipe is connected. Can be prevented.

  In this state, the male screw portion 35 of the crimping member 21 to which the handle 23 is attached is screwed into the female screw portion 25 of the slide case 20. At this time, as shown in FIG. 3, when the abutting surface 36 of the crimping member 21 abuts on the front end surface 60 of the elbow member 22, the mounting of the crimping member 21 to the slide case 20 is completed. .

  Next, the primary side mounting member 3 including the above-described temporarily assembled elbow member 22, the crimping member 21 having the handle 23, and the slide case 20 is placed on the primary side of the upper surface 11 of the base body 2, and the mounting portion 31. The fixing bolt 33 is screwed to the female screw 32 and fixed to the base body 2.

  At this time, the abutting portion 45 is reversed after abutting on the locking portion 30 and temporarily fixed at a predetermined position, whereby the entire elbow member 22 can be easily assembled while accurately arranging the elbow member 22. As shown in FIG. 2, in a state before being brought into contact with the slide case 20 and the pressure-bonding member 21, the male screw 42 and the parallel female screw 27 can rotate the slide case 20. Accordingly, the number of parts and the number of processing steps can be reduced without providing a separate part for holding the elbow member 22 in the rotational position, and the male screw 42 and the parallel female screw 27 can be easily processed along the axial direction.

A gap S <b> 1 is formed between the contact portion 45 and the locking portion 30, and a gap S <b> 2 is formed between the screwing-side tip surface 60 and the contact surface 36. For this reason, the elbow member 22 can be rotated and moved to the pressure-bonding member 21 side by a screw pitch of about 1 to 1.5 via the threaded engagement of the male screw 42 and the parallel female screw 27.
On the other hand, the elbow member 22 is rotatable about a screw pitch of about 1 to 1.5 on the opposite side to the crimping member 21 via the male screw 42 and the parallel female screw 27.

  In FIG. 4, after fixing the primary side mounting member 3, the elbow member 22 is rotated 90 ° or more clockwise or counterclockwise from the state where the gasket seal surface 54 of the elbow member 22 is directly above to be in the horizontal position. The elbow member 22 or the union nut 55 engages (interferences) with a part of the base body 2 when exceeding. Thereby, the base body 2 serves as a stopper for the elbow member 22 and functions as a rotation restricting member, and the elbow member 22 can be removed from the slide case 20 using screw connection without providing a separate locking mechanism. Can be prevented.

  When connecting the external pipe 48, the elbow member 22 is rotated clockwise or counterclockwise by at least about 90 ° in accordance with the direction of the external pipe 48, and the connection direction is adjusted. 22 can be easily connected to the pipe. In addition, by providing a relatively small pitch between the male screw 42 and the parallel female screw 27, the amount of advancement / retraction of the elbow member 22 during rotation is extremely reduced, and adverse effects when connecting external piping are suppressed.

  As described above, since the direction of the elbow member 22 can be adjusted by the screwed structure to the slide case 20, it is possible to suppress the expansion of the dimension from the primary side connection portion to the secondary side connection portion and to provide a margin while maintaining the margin. The external pipe 48 can be connected, and the entire meter unit can be downsized and installed in a narrow pipe space.

  In addition to the above assembling method, the crimping member 21 is mounted on the slide case 20 in advance, and the elbow member 22 is screwed in this state so that the screwing-side distal end surface 60 contacts the contact surface 36. It may be. In this case, after contact, the elbow member 22 is reversed and separated from the crimping member 21, or the crimping member 21 is reversed and separated from the elbow member 22 to provide a predetermined gap, and the pipe connection is established via this gap. The elbow member 22 required for work can be rotated. Furthermore, when the screwing side tip surface 60 and the contact surface 36 are brought into contact with each other, the contact portion 45 and the locking portion 30 can be omitted.

In FIG. 5, other embodiment of the water meter unit of this invention is shown. In the following embodiments, the same parts as those in the above embodiments are denoted by the same reference numerals, and the description thereof is omitted.
In this embodiment, the straight pipe member 70 is screwed into the slide case 20 instead of the elbow member, and the contact portion 71 provided on the straight pipe member 70 is provided so as to be able to contact the locking portion 30 of the slide case 20. In this state, the primary attachment member 3 is disposed on the base body 2 shown in FIG. In this way, by providing the straight pipe member 70 in the same screw-in structure as in the above embodiment, the slide case 20 and the crimping member 21 are used as common parts, and the straight pipe member 70 forms a straight connection type meter unit on the primary side. it can.

  In this case, it is not necessary to invert the straight pipe member 70, and the threaded side distal end surface 72 provided on the distal end side of the straight pipe member 70 is in contact with the contact portion 71 in contact with and fixed to the locking portion 30. By contacting the surface 36, the crimping member 21 can be mounted and the assembly of the primary side mounting member 3 can be completed. For this reason, a sliding resistance member is not required, and the number of parts can be reduced.

FIG. 6 shows still another embodiment of the water meter unit of the present invention.
In this embodiment, a sealing surface 81 is formed on the inner periphery of the crimping member 80, and an elbow member 82 is inserted into the sealing surface 81. A mounting groove 83 is formed on the outer periphery of the elbow member 82 on the insertion side, and a sealing O-ring 84 is mounted on the mounting groove 83, and the O-ring 84 comes into liquid-tight contact with the sealing surface 81 so that the crimping member 80 and the elbow The member 82 is sealed to prevent external leakage. Thus, even when the insertion relationship between the crimping member 80 and the elbow member 82 is reversed, the same function as in the above embodiment is exhibited.

  Moreover, although not shown in figure, it is good also as a structure which provided the screw in the elbow member connection side of the slide case, and screwed the elbow member through the internal thread screwed in this male screw. In this case, if a concave groove is provided in the slide case and a sliding resistance member having sealing properties is provided in the concave groove while exhibiting sliding resistance, the elbow member is rotated with respect to the slide case by the sliding resistance member. The orientation can be maintained while being possible, and fluid leakage between them can be prevented.

DESCRIPTION OF SYMBOLS 1 Meter unit main body 2 Base body 3 Primary side attachment member 4 Secondary side attachment member 5 Water meter 20 Slide case 21 Crimping member 22 Elbow member 24 Inner peripheral surface 30 Locking portion 31 Mounting portion 36 Contact surface 45 Contact Part 51 Peripheral surface 50 Sliding resistance member 60 Front end surface of screwing side S1, S2 Clearance

Claims (5)

  A primary side mounting member and a secondary side mounting member for crimping and fixing a water meter in the longitudinal direction of the base body are disposed, and the primary side mounting member is provided on a slide case provided on the base body, and a slide case It consists of a crimping member provided movably and an elbow member provided so as to be able to be screwed to the slide case, and the elbow member is screwed to the locking portion provided on the inner peripheral surface of the slide case and the elbow member. A contact portion that contacts the locking portion, and a predetermined gap is provided between the locking portion and the contact portion when the primary side mounting member is disposed on the base body. This is a water meter unit.   A primary side mounting member and a secondary side mounting member for crimping and fixing a water meter in the longitudinal direction of the base body are disposed, and the primary side mounting member is provided on a slide case provided on the base body, and a slide case It consists of a crimp member that is movably provided and an elbow member that is screwable to the slide case. The front end surface of the elbow member is brought into contact with the crimp member that abuts when the elbow member is screwed. And a predetermined gap is provided between the front end surface of the screwing side and the contact surface when the primary side mounting member is disposed on the base body. Meter unit.   The sliding resistance member is interposed between the inner peripheral surface of the slide case and the outer peripheral surface of the elbow member, and the elbow member is temporarily fixed at an arbitrary position by the sliding resistance member. The water meter unit according to 2.   The water meter unit according to any one of claims 1 to 3, wherein the elbow member is provided on a rotating orbit of the elbow member so that the elbow member can be engaged with a part of the base body.   The water meter unit according to any one of claims 1 to 4, wherein an attachment portion is provided integrally or separately on the slide case, and the attachment portion is attached to a primary side of the base body.

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