JP2011153489A - Meter unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a meter unit which enables a check valve to be easily replaced by efficient replacement operations without detachment of secondary-side piping, and which enables a water works meter to be mounted in a predetermined installation direction without adjustment of a mounting portion of the water works meter after the replacement of the check valve. <P>SOLUTION: The meter unit keeps primary-side and secondary-side mounting members 3 and 4 for crimp-fixing the water works meter 5 mounted in the longitudinal direction of a base body 2 which is equipped with a protrusion 75 for prevention of inverse installation of the meter. In this meter unit, a cap member 51 for housing the check valve 50 is screw-connected to the secondary-side mounting member 4, a meter retainer member 8 is provided between the cap member 51 and a top surface 2a of the base body; and an upper portion of the meter retainer member 8 and the cap member 51 are provided in such a manner that the meter retainer member 8 can be attached to/detached from the cap member 51 via an attachment/detachment engagement portion 79. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to, for example, a meter unit for installing a water meter for measuring the amount of water used, and more particularly to a mechanism part on the secondary side of a crimp-fixed meter unit.

  In recent years, pressure-fixing type meter units are generally used as meter units for water meters. The crimp-fixed meter unit is usually provided with a tongue-shaped receiving portion on the primary side and the secondary side of the water meter, and the water meter is crimped and fixed in a state of receiving the side portion on the receiving portion. It has a connection structure. Normally, a cartridge-like check valve is accommodated on the secondary side of the meter unit, and this check valve is provided in a replaceable manner.

As a meter unit provided with this kind of cartridge-like check valve, for example, a connection device for a water meter of Patent Document 1 is known. In this connection device, a mounting hole is provided in the secondary support base, and the check valve unit is accommodated in the mounting hole. In addition, a detachable end portion having a receiving portion is integrally provided at the inner end of the mounting hole, and first and second connection portions are provided on the secondary side of the mounting hole so as to communicate with the mounting hole. The cap is attached to the part, and the rotary joint is attached to the second connection part.
When replacing the check valve unit, remove the cap and rotary joint on the secondary side, remove the check valve unit and replace it from the pipe side, and then attach the cap and rotary joint again. It has become.

On the other hand, as a meter unit having a structure in which the cartridge check valve can be replaced from the primary side of the base attached to the base, for example, a water meter unit of Patent Document 2 is known. In the meter unit of the literature 2, a check valve body as a base is provided on the secondary side of the base, and a cartridge body is mounted inside the check valve body. An attachment ring is attached to the primary side of the check valve body by screw connection, and the check cartridge is fixed in the check valve body by screwing of the attachment ring. The mounting ring is provided with a cap-shaped screw receiving member so as to be fitted therein, and the side portion of the meter is received by the screw receiving member.
When replacing the non-return cartridge, unscrew the screw receiving member, unscrew the mounting ring and replace the non-return cartridge from the primary side, then screw the mounting ring, and fix the screw receiving member to a predetermined position. It is designed to be mounted in the direction. Thus, in the meter unit having a structure having a screw-coupled mounting ring, the mounting ring itself rotates. Therefore, a screw receiving member is provided separately from the mounting ring, and the screw receiving member is arranged in the direction in which the meter is placed. It is necessary to adjust to.

Further, as a meter unit having another structure in which the non-return cartridge can be replaced from the primary side, a meter receiver serving as the screw receiving member is provided, and the meter unit having a structure in which the meter receiver is attached to the base and the secondary base portion is provided. Are known. The meter receiver is formed in a pedestal shape, and the lower side thereof is detachably attached to a predetermined position of the base by fitting, and the secondary side is fixed by being fitted to the attachment ring of the base.
When replacing the non-return cartridge, remove the fitting of the meter receiver from the base and the mounting ring, then remove the mounting ring in the same manner as described above, replace the non-return cartridge, and attach the meter receiver to the base and the mounting ring. Fits and attaches.
By the way, in general, a pressure-fixing type meter unit is provided with a reverse installation prevention mechanism for preventing reverse installation of a water meter. In the meter unit having a structure provided with the meter receiver, a reverse installation preventing mechanism capable of mounting the secondary side of the water meter is provided integrally with the meter receiver.

JP 2008-274697 A JP 2007-297910 A

  However, in the connection device of the water meter of Patent Document 1, when replacing the check valve unit, it is necessary to attach or detach the cap or rotary joint on the secondary side piping side. In particular, when the rotary joint is piped in the direction in which the check valve unit is attached or detached, it is inefficient to remove the rotary joint that has already been piped every time the check valve unit is replaced. When the meter unit is provided in a narrow installation space, it is difficult to replace the check valve unit.

  On the other hand, the water meter unit of the literature 2 requires an operation for adjusting the circumferential direction of the screw receiving member when the check cartridge is replaced and the mounting ring and the screw receiving member are mounted. It was. Moreover, in order to mount the meter while preventing the water meter from rotating, it is necessary to perform this adjustment work accurately.

  The meter unit with a structure where the meter receiver is attached to the base and the base side is provided with a reverse installation prevention mechanism integrated with the meter receiver. If the installation prevention mechanism is not disposed at an appropriate position for placing the water meter, the reverse installation prevention function may be invalidated.

  The present invention has been developed to solve the above-described problems, and the object of the present invention is to easily replace the check valve by an efficient replacement operation without removing the secondary side pipe. An object of the present invention is to provide a meter unit capable of mounting a water meter in a predetermined installation direction without adjusting the mounting portion of the water meter after replacement of the stop valve.

  To achieve the above object, the invention according to claim 1 is directed to a primary side mounting member and a secondary side for crimping and fixing a water meter in the longitudinal direction of a base body provided with a protrusion for preventing reverse installation of the meter. A mounting member is mounted, a cap member for accommodating a check valve is screwed to the secondary mounting member, and a meter receiving member is provided between the cap member and the upper surface of the base body. This is a meter unit in which a meter receiving member is detachably provided from a cap member via a member.

  In the invention according to claim 2, the attachment / detachment engaging portion includes an uneven fitting portion provided on the upper portion of the meter receiving member and an annular groove provided on the cap member, and the uneven fitting portion is detachably snapped into the annular groove. It is an engaged meter unit.

  According to a third aspect of the present invention, a long holding band having a protrusion is placed on the upper surface of the base body, and the primary side mounting member and the secondary side mounting member are placed on the upper surface of the base body with the holding band interposed therebetween. It is a fixed meter unit.

  The invention according to claim 4 is provided with a rail portion for guiding the meter receiving member along the axis for attaching the meter to the holding band, and a concave groove that can be fitted to the rail portion is provided on the meter receiving member. And a concave groove, and a meter receiving member is slidably attached to the holding band.

  In the invention according to claim 5, in order to match the mounting positions of the primary side mounting member and the secondary side mounting member in accordance with the inter-surface dimension of the water meter, the holding band is provided to be replaceable with respect to the base body. It is a meter unit.

  According to the first aspect of the invention, when replacing the check valve, the meter receiving member can be easily detached from the cap member by removing the engaging portion, and the cap member can be removed from the primary side of the secondary side mounting member. By removing the screw connection, the check valve can be easily replaced by an efficient operation without attaching or detaching the secondary side pipe. After replacement of the check valve, it is not necessary to adjust the circumferential direction of the meter receiving member by attaching the meter receiving member between the cap member and the upper surface of the base body, so that it is surely placed in the predetermined installation direction. The mounted water meter can be fixed by crimping. In addition, since the meter receiving member and the protruding portion can be separated, the function of preventing reverse installation of the water meter by the protruding portion is effectively exhibited even when the meter receiving member is removed. Furthermore, due to the separation structure of the meter receiving member and the protruding portion, the protruding portion is formed integrally with the holding band, and by replacing this holding band, the meter receiving member can be shared without sticking to the inter-surface dimensions of the water meter. Available.

  According to the second aspect of the present invention, the meter receiving member can be detachably attached to the cap member after screw connection by snap fitting, whereby both sides of the water meter are provided between the cap member and the meter receiving member. A water meter can be installed while preventing the surrounding area from falling and demonstrating the alignment function.

  According to the invention according to claim 3, it is possible to cope with water meters having different face-to-face dimensions by providing holding bands having different lengths or holding bands having different mounting positions with the secondary side mounting member in advance. Therefore, water meters of all aspects can be accurately attached by simply changing the holding band while sharing the base body. In addition, since the meter receiving member and the secondary side mounting member are separately mounted on the base body, it is easy to assemble, and no hole processing for mounting the meter receiving member to the base body is required. Strength reduction is suppressed. In addition to making the entire meter unit compact by unitizing the holding band, it is possible to reduce the weight by forming the holding band and the meter receiving member with resin, etc., and share these parts. This facilitates parts management and transportation.

  According to the invention which concerns on Claim 4, a meter receiving member can be slid with respect to a holding | maintenance band, maintaining a centering state by fitting a rail part and a concave groove, and the water supply from which a dimension between surfaces differs Even in the case of a water meter, the meter receiving member can be attached while adjusting the position according to the inter-surface dimension while ensuring the alignment state of the holding band corresponding to the water meter.

  According to the fifth aspect of the present invention, it is possible to attach a water meter having different face-to-face dimensions to one base body without trouble by simply changing the holding band and without processing the base body.

It is sectional drawing which shows 1st Embodiment of the meter unit of this invention. It is a perspective view which shows the state which mounted | wore the holding | maintenance band with the meter receiving member. It is a perspective view which shows a holding belt. It is the sectional view on the AA line of FIG. It is a partial expanded sectional view of the meter unit which showed the attachment process of the meter receiving member. It is the BB sectional view taken on the line of FIG. It is a partial expanded sectional view of the meter unit which showed the attachment process of the primary side support member. It is sectional drawing which showed the state before crimping | compression-bonding of the water meter. It is sectional drawing which shows 2nd Embodiment of the meter unit of this invention. It is the perspective view which showed the other example of the meter receiving member. It is the perspective view which showed the other example of the meter receiving member. It is sectional drawing which showed the other example of the support member.

An embodiment of a meter unit in the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment of a meter unit of the present invention, and FIGS. 2 and 3 show a holding band, a supporting member, and a meter receiving member.
In FIG. 1, a meter unit main body 1 has a base body 2, a primary side mounting member 3, and a secondary side mounting member 4, and the base body 2 includes a protrusion 75 for preventing reverse installation of the meter. It has been. A primary side attachment member 3 and a secondary side attachment member 4 are attached in the longitudinal direction of the base body 2, and a water meter 5 is crimped between the primary side attachment member 3 and the secondary side attachment member 4. Fixed. A holding band 6 is disposed between the primary side mounting member 3, the secondary side mounting member 4 and the base body 2, and the holding band 6 has a primary side support member 7 and a secondary side mounting member 7. A meter receiving member 8 is provided.

For example, the base body 2 is formed in a long shape from a metal plate material such as steel by press drawing. The base body 2 is opened downward and has a base portion 12 having a substantially U-shaped cross section having both side lower surfaces 10 and 10 and an upper surface 2a, and flange portions 13 and 13 on both sides of the base portion 12. Yes. Guide rails 14 and 14 are formed projectingly on both sides of the base portion 12 in the longitudinal direction, that is, on both sides of the upper surface 2a, and the holding band 6 can be placed on the upper surface 2a between the guide rails 14 and 14. The guide rail 14 guides the holding band 6.
Four insertion holes 15 are formed in the vicinity of both sides of the upper surface 2a, and a notch groove 16 for fixing anchor bolts (not shown) is formed at the center position of the outer end of the flange portion 13.

  Of the primary side mounting member 3 and the secondary side mounting member 4, the primary side mounting member 3 is the crimping side, and the secondary side mounting member 4 is the side crimped by the primary side mounting member 3. ing. Among these, the secondary side attachment member 4 side is demonstrated first.

The secondary side attachment member 4 is formed of an appropriate metal material by casting or the like, and a female screw portion 62 is formed on the inner peripheral side. Further, an opening hole 63 is provided in communication with the female screw portion 62, and a female screw 64 is formed in a part of the opening hole 63. A plug 66 having a sealing O-ring 65 can be screwed onto the female screw 64, and when the plug 66 is removed, the cap member 51 from the outer side of the secondary mounting member 4 through the opening hole 63. The wearing state of can be visually confirmed. Furthermore, the opening hole 63 can also be used for pressure inspection. In this case, by connecting an inspection plug (not shown) to the opening hole 63, the pressure of the internal channel can be inspected even when the water meter 5 is fixed by crimping. become. A female screw 40 is provided on the bottom surface side of the secondary mounting member 4, and a fixing bolt 41 can be screwed to the female screw 40.
As shown in FIGS. 1, 4, and 5, the secondary side mounting member 4 is provided with a check valve 50 and a cap member 51.
The check valve 50 is formed in an appropriate internal structure that allows water flowing through the water meter 5 to flow to the secondary side and prevents backflow from the secondary side. This check valve 50 is formed in a cartridge shape that can be attached to and detached from a mounting portion 53 that is a recess formed in the secondary side mounting member 4, and is formed by a pipe-shaped spacer 52 that is mounted in the secondary side mounting member 4. It is accommodated in the secondary side attachment member 4 while being positioned.

The cap member 51 in FIG. 5 is formed in a substantially cylindrical shape, and is provided with a screw portion 55 on the outer peripheral side and a crimping portion 56 on the side to be crimped to the secondary side of the water meter 5. A gasket 27 is attached to the crimping portion 56, and a crimping surface 58 is formed on the water meter 5 side of the gasket 27. An annular groove 60 is formed on the outer peripheral side in the vicinity of the crimping surface 56 of the cap member 51, and an O-ring 61 is mounted between the male screw portion 55 and the crimping portion 56.
The cap member 51 is fixed from the primary side of the check valve 50 by screwing a screw portion 55 to a female screw portion 62 of the secondary side mounting member 4 to be described later, and is crimped to the pressure meter surface 58 on the water meter 5 side. Is disposed.

On the other hand, the primary side attachment member 3 is formed from an appropriate metal material, for example, by casting or the like, similarly to the secondary side attachment member 4, and a female screw portion 36 is formed on the inner peripheral side. The primary side mounting member 3 is provided with a hole-like portion penetrating from the female screw portion 36, and a female screw 37 is formed in communication with the hole-like portion, and a fixing screw 38 is screwed to the female screw 37. It is provided as possible. A female screw 40 is provided on the bottom surface side of the primary side mounting member 3, and a fixing bolt 41 such as a hexagon socket bolt can be screwed to the female screw 40. A through hole 42 extends on the side of the female screw 40 that communicates with the hole-like portion, and a pin 43 can be inserted into the through hole 42.
As shown in FIGS. 1, 6, and 7, the primary side attachment member 3 is provided with a crimping member 20, a handle 21, and a pipe 23.

  The crimping member 20 is formed in a substantially cylindrical shape, and has a male screw portion 25 on the outer peripheral side of attachment to the primary side attachment member 3 and an enlarged diameter crimping portion 26 on the crimping side with the water meter 5. . In the same manner as in the case of the pressure-bonding portion 56, the pressure-bonding portion 26 is provided so that the gasket 27 can be attached. The gasket 27 has a pressure-bonding surface 28 with the water meter 5. On the outer peripheral side in the vicinity of the crimping surface 28 of the crimping member 20, a latching portion 30 is formed as a latching groove formed continuously on the outer periphery of the crimping member 20, and the outer periphery of the end of the crimping member 20 on the pipe 23 side is formed. Is attached with an O-ring 31. A substantially hexagonal hexagonal portion 32 is formed on the outer peripheral side of the enlarged diameter portion of the crimping portion 26, and the handle 21 is integrated with the crimping member via the hexagonal portion 32.

  Although not shown, a part of the inner peripheral side of the handle 21 is provided in a hexagonal shape that can be fitted to the hexagonal portion 32, and the hexagonal portion is fitted and fixed to the hexagonal portion 32, so The member 20 is integrated. When the handle 21 is rotated by this integration, the pressure-bonding member 20 rotates integrally with the handle 21, and at this time, the contact portion 34 formed to project from the inner peripheral side is formed from the secondary side of the pressure-bonding member 20. This prevents the crimping member 20 from coming out of the handle 21.

  The pipe 23 is provided so as to be connectable to an external flow path (not shown), and includes, for example, an elbow as shown in FIG. An annular groove 45 is formed on the outer periphery of the pipe 23 on the insertion side to the primary attachment member 3. A ball valve 47 is connected to the side of the pipe 23 connected to the external flow path by a tightening nut 46.

  In the above-described primary side mounting member 3, the crimping member 20 is fitted into the pipe 23 while the primary side is sealed by the O-ring 31, and is attached to the primary side mounting member 3 together with the pipe 23. At this time, the male screw portion 25 of the crimping member 20 and the female screw portion 36 of the primary side attachment member 3 are screwed together. The pipe 23 is inserted from the primary side of the primary side attachment member 3, and a pin 43 is fitted into the lower side of the annular groove 45 from the through hole 42, and 1 is placed on the upper side of the annular groove 45. A fixing screw 38 that is screwed into the female screw 37 of the secondary attachment member 3 is fitted. With this structure, the pipe 23 is rotatably attached to the primary attachment member 3 while being prevented from being pulled out. The pipe 23 can be rotated with respect to the primary side mounting member 3 by loosening the fixing screw 38, and is simply fixed to the primary side mounting member 3 by tightening the fixing screw 38.

  When the handle 21 is rotated by the above-described attachment structure of the crimping member 20 to the primary side mounting member 3, the crimping member 20 is rotated with respect to the crimping direction of the water meter 5 while the crimping surface 28 rotates. It is provided to move freely.

  On the other hand, the holding band 6 shown in FIG. 2 and FIG. 3 is formed in a long shape with a width that can be placed on the upper surface 2a of the base body 2 by an elastic resin such as ABS resin or polyacetal. As shown in FIG. 1, a protrusion 70 that can be inserted into the insertion hole 15 is formed in a downward direction at a position corresponding to the insertion hole 15 in the vicinity of both sides of the holding band 6. A through hole 71 for fixing the fixing bolt 41 is formed corresponding to the insertion hole 15.

  On the inner side of the through holes 71, 71 of the holding band 6, a substantially rectangular parallelepiped rail portion 72 that guides the support member 7 along the shaft core P for attaching the water meter 5 is formed to project on the primary side. Has been. On the other hand, a meter receiving member is guided along the axis P on the secondary side, and a substantially rectangular parallelepiped rail portion 73 having a different cross-sectional shape from the rail portion 72 is formed to project. Each rail part 72 and 73 is provided in the holding band 6 so that the supporting member 7 and the meter receiving member 8 can be guided along the axis P. A protruding portion 75 is formed on the distal end side of the secondary rail portion 73 so as to be displaced from the axis P, and this protruding portion 75 is formed on the bottom surface side of the water meter 5 placed in a predetermined direction. The reverse installation of the water meter 5 is prevented by contacting the rib 5c. Although not shown, the holding band 6 may have a separate structure.

  The holding band 6 is placed on the base body upper surface 2 a and is integrally fixed to the base body 2 while being interposed between the base body 2 and the primary side mounting member 3 and the secondary side mounting member 4. At this time, the protrusion 70 is fitted into the insertion hole 15 so that the holding band 6 is positioned on the upper surface 2a of the base body. In this state, the primary attachment members 3 and 2 are placed on the base body 2 from above the holding band 6. By mounting the secondary side attachment member 4 and screwing the fixing bolt 41 to the female screw 40 through the insertion hole 15 and the through hole 71 from the lower side of the base body 2, the base body 2, the holding band 6, 1 The secondary attachment member 3 and the secondary attachment member 4 are integrated. At this time, as shown in FIG. 2, a boss portion 76 is formed around the through hole 71, and on the other hand, as shown in FIG. 1, a recess 77 into which the boss portion 76 can be fitted is formed around the female screw 42. The primary side mounting member 3 and the secondary side mounting member 4 are easily positioned on the holding band 6 by fitting the boss portion 76 into the recess 77.

Furthermore, in order to match the mounting positions of the primary side mounting member 3 and the secondary side mounting member 4 according to the inter-surface dimension of the water meter 5, the holding band 6 is provided to be exchangeable with respect to the base body 2. Thus, it becomes possible to correspond to the water meter 5 having various face-to-face dimensions.
Although not shown, the holding band may have a separate structure. In this case as well, each holding band is connected to the primary side mounting member 3 and the secondary side mounting member 4 in the same manner as described above. The base body 2 can be fixed.

  As shown in FIGS. 1 and 2, the support member 7 and the meter receiving member 8 are formed of the same resin material as the holding band 6 and are provided so as to be attachable from the upper side of the holding band 6. The side portions 5a and 5b on both sides can be supported.

Among these, the meter receiving member 8 is provided between the cap member 51 and the base body upper surface 2 a and is detachably provided from the cap member 51.
The meter receiving member 8 has an uneven fitting portion 81 and an arcuate support portion 83 formed at the upper portion thereof, and a concave groove 85 and a contact surface 87 that can be fitted to the rail portion 73 at the lower portion thereof. The concave groove 85 and the rail portion 73 are fitted to be slidable with respect to the holding band 6. Thereby, the meter receiving member 8 is provided to be movable in the longitudinal direction of the base body 2.

In the meter receiving member 8, the concave / convex fitting portion 81 is detachably snap-engaged with an annular groove 60 provided in the cap member 51 as shown in FIGS. 2 and 5. The concavo-convex fitting portion 81 and the annular groove 60 constitute a detachable engagement portion 79, and the snap-engagement of the detachable engagement portion 79 makes the meter receiving member 8 detachable from the cap member 51. Yes. Height H ₂ of the uneven portions of the uneven fitting portion 81, for example provided as low as about 0.5 mm, a height (not shown) of the annular groove 60, a high fittable to the recess-projection fitting portion 81 Is formed.

The secondary side support part 83 is formed in a substantially circular arc shape, and the secondary side of the water meter 5 can be supported by placing the secondary side part 5 b of the water meter 5. ing. The width W ₂ of the bottom of the concave groove 85 of the meter receiving member 8 is provided, for example, to about 11 mm. As shown in FIG. 4, a gap G is formed between the upper surface 73a of the rail portion 73 and the bottom surface 85a of the concave groove 85. By providing this gap G, the meter receiving member 8 shown in FIG. At the time of mounting, the meter receiving member can be easily attached and detached from the oblique direction.

  The secondary contact surface 87 is provided in a step shape by providing a step portion 8 a on the bottom surface side of the meter receiving member 8. When the meter receiving member 8 and the rail portion 73 are fitted, the contact surface 87 is Abutting on the upper surface 73a of the rail portion, contact between the bottom surface side of the meter receiving member and the base body upper surface 2a is prevented.

When the meter receiving member 8 is attached to the holding band 6 attached to the base body 2, the meter receiving member is in a state where the cap member 51 is screwed to accommodate the check valve 50 in the secondary mounting member 4. The meter receiving member 8 is detachably mounted from the cap member 51 by engaging the upper portion of the member 8 and the cap member 51 via the attachment / detachment engaging portion 79. At that time, in that the height H ₂ of the convex-concave engagement portion 81 by about 0.5 mm, weakens the engagement between the convex-concave engagement portion 81 and the annular groove 60, the meter receiving member after assembly of the meter unit body 1 8 can be easily attached and detached.
At this time, in this embodiment, as shown in FIG. 4, since at least the side surface 85 b of the concave groove 85 abuts on the side surface 73 b of the rail portion 73, the meter receiving member 8 is moved in the direction of the axis P by the rail portion 73. It is installed so that it can be surely guided.

  Further, as shown in FIG. 1, on the meter receiving member 8 side, it is necessary to set the distance D between the projecting portion 75 and the end surface side of the cap member 51 to be larger than the length L of the meter receiving member 8. . This is because when the meter receiving member is attached and detached in FIG. 5, the meter receiving member can be inserted and removed from between the protrusion 75 and the end face side of the cap member 51.

  On the other hand, the support member 7 is provided between the crimping member 20 and the base body upper surface 2a so as to be able to support the primary side of the meter, and the upper part of the support member 7 is engaged with the crimping member 20. The crimping member 20 is provided so as to move as the crimping member 20 advances and retreats.

  2 and 6, the support member 7 has an engaging portion 80 and an arc-shaped support portion 82 formed at the upper portion thereof, and a concave groove 84 that can be fitted to the rail portion 72 at the lower portion, and a contact surface 86. And is slidably attached to the holding band 6 by fitting the concave groove 84 and the rail portion 72. Thus, the support member 7 is provided so as to be movable in the longitudinal direction of the base body 2.

As shown in FIGS. 2 and 7, the engagement portion 80 is an engagement groove formed along the arc-shaped support portion 82 of the support member 7. The engagement member 30 is engaged, and by this engagement, the crimping member 20 is rotatable with respect to the support member 7. The height H ₁ of the concave and convex portion of the engaging portion 80 is provided, for example, as high as about 2 mm. In FIG. 1, the height (not shown) of the locking portion 30 of the crimping member is fitted into the engaging portion 80. It is formed to a height that can be matched.

The primary side support part 82 is formed in a substantially arc shape having the same shape as the secondary side support part 83, and the primary side part 5 a of the water meter 5 is placed on the support part 82. Thus, the primary side of the water meter 5 can be supported.
The width W ₁ of the concave groove 84 in the lower portion of the support member 7 in FIG. 6 is, for example, about 14 mm, and the primary rail portion 72 is fitted into the concave groove 84 by making it wide in this way. When they are joined, the sliding of the support member 7 is stabilized. Furthermore, by setting the above-described width W ₂ <width W ₁ , it is possible to prevent the support member 7 and the meter receiving member 8 from being erroneously installed in different rail portions from the corresponding rail portions. The height of the concave groove (not shown) from the contact surface may be substantially the same as the height of the primary rail portion 72 of the holding band 6, but in order to further reduce the resistance during sliding, the concave groove 84 is used. The height may be made larger than the height of the rail portion, and a gap may be provided between them.

  Similar to the meter receiving member 8, the primary contact surface 86 is provided in a step shape by a step portion 7 a formed on the bottom surface side of the supporting member 7, and the supporting member 7 and the rail portion 72 are fitted to each other. Sometimes, the contact surface 86 is in contact with the upper surface 72a of the rail portion. Thus, by providing the structure in which the contact between the bottom surface side of the support member 7 and the base body upper surface 2a is prevented, the support member 7 is not affected by the roughness of the upper surface shape of the base body upper surface 2a. It is possible to ensure stable attachment / detachment and sliding.

When the support member 7 is attached to the holding band 6 attached to the base body 2, the support member 7 is attached to the crimping member 20 so that the engaging portion 80 and the locking portion 30 are engaged. As a result, the support member 7 can move as the crimping member 20 advances and retreats. At this time, that the height H ₁ of the engaging portion 80 by about 2 mm, and the engaging portion 80 and the locking portion 30 is firmly engaged in the upper side of the支受member 7, fitting of the upper side And the fitting of the lower concave groove 84 and the rail portion 72 make it difficult to attach and detach the support member 7 after the meter unit body 1 is assembled.
In the present embodiment, as shown in FIG. 4, at least the side surface 84 a of the concave groove 84 is in contact with the side surface 72 b of the rail portion 72. It is installed to be surely guided in the direction of.

In the above embodiment, the holding band 6 is provided with the support member 7 and the meter receiving member 8, and the holding band 6 is attached to the base body 2. However, the holding band may be omitted. It is also possible to arrange a support member or a protrusion directly on the upper surface of the body.
In addition, the meter unit is mainly provided corresponding to a water meter having a nominal diameter of 13A, 20A, or 25A. However, the meter unit of the present invention can be commonly used for a water meter of 13A or 20A. It has become. In this case, only the pressure bonding member 20, including the gasket 27, the O-rings 31, 61, the cap member 51, the support member 7, the meter receiving member 8, and the holding band 6 are provided separately corresponding to the nominal diameters 13A and 20A. The spacer 52 may be provided for the diameter 13A, and the parts other than these can be shared by the nominal diameters 13A and 20A.

Next, the operation of the meter unit of the present invention in the above embodiment will be described.
The meter unit of the present invention includes a primary side mounting member 3 and a secondary side mounting member 4 for fixing a water meter 5 by pressure in the longitudinal direction of the base body 2 provided with a protrusion 75 for preventing reverse installation of the meter. The cap member 51 for accommodating the check valve 50 is screwed to the mounting member 4 on the secondary side, and the meter receiving member 8 is provided between the cap member 51 and the base body upper surface 2a. Since the meter receiving member 8 is detachably provided from the cap member 51 via the attachment / detachment engaging portion 79, the concave and convex fitting portion 81 which is the attachment / detachment engaging portion 79 in FIG. By removing the snap-engagement with the groove 60 and removing the meter receiving member 8, removing the screw and removing the cap member 51, the check valve 50 can be easily replaced without attaching or detaching the secondary side pipe. it can. In this case, the moving distance necessary for removing the meter receiving member 8 is from the snap engagement position with the cap member 51 to the projection 75, and it is easy to slide the meter receiving member 8 by this distance. It can be removed.

  The meter receiving member 8 is snap-fitted to the cap member 51 by the detachable engaging portion 79 at the upper portion and is slidably attached to the holding band 6 by fitting the concave groove 85 and the rail portion 73 at the lower portion. The meter receiving member 8 can be mounted in a predetermined direction in which the water meter 5 can be placed without adjusting the circumferential direction, and when the water meter 5 is mounted, the water meter 5 is prevented from rotating. It can be installed in an accurate state.

  Moreover, since the protrusion 75 is formed integrally with the holding band 6 and the holding band 6 and the meter receiving member 8 are provided separately, the shape and the inter-surface dimensions of the water meter 5 are different. However, by sliding the meter receiving member 8 with respect to the holding band 6 and adjusting the position, the water meter 5 can be placed at a predetermined position of the meter unit main body 1 and the reverse installation preventing function can be surely exhibited. it can.

  When the water meter 5 is attached to the meter unit body 1, the crimping member 20 and the support member 7 are rotated by rotating the crimping member 20 with the handle 21 from the state where the water meter 5 of FIG. 8 is placed. It moves in the crimping direction, presses the water meter 5 in a state where the side 5a of the water meter 5 is supported by the crimping member 20 and the support member 7, and the crimping member 20 and the support member 7, The cap member 51 and the meter receiving member 8 can be crimped and fixed in an aligned state while supporting the primary side and the secondary side of the water meter 5.

In FIG. 9, 2nd Embodiment of the meter unit of this invention is shown. In this embodiment, the same parts as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The meter unit main body 90 in this embodiment is provided so that a long-type water meter 92 can be attached by using a holding band 91 that is longer than the holding band 6 described above.

  The holding band 91 is provided with two through holes 93 and 93 for fixing with the fixing bolts 41 in the vicinity of each side portion, and projecting portions 94 and 94 are formed to protrude inside the through hole 93. When the long-type meter unit main body 90 is configured using the holding band 91, the protrusion 94 is inserted into the through hole 93 to position the holding band 91 on the base body 2, and in this state, the primary side mounting is performed. The member 3 and the secondary attachment member 4 are placed on the base body 2, and the fixing bolt 41 is screwed onto the female screw 40 from the lower side of the base body 2 through the insertion hole 15 and the through hole 93. Then, the base body 2, the primary side attachment member 3, and the secondary side attachment member 4 are integrated. In this way, by providing the elongated holding band 91 in which the positions of the projecting portion 94 and the through hole 93 differ with respect to the communication hole 15 formed in the base body 2, components of each part other than the holding band 91 are provided. A long-type water meter 92 can be attached while sharing the same.

  FIG. 10 shows another example of the meter receiving member. The meter receiving member 120 has tapered surfaces 123 and 124 formed at the edge portions of the bottom surface 121a of the concave groove 121 and the contact surface 122 on the cap member side. These tapered surfaces 123 and 124 are formed at, for example, an angle of 15 °, and are inclined toward the tapered surfaces 123 and 124, so that the meter receiving member 120 is placed on the end surface side between the protrusion 75 and the cap member 51. It can be easily inserted and removed diagonally from between.

  FIG. 11 shows still another example of the meter receiving member. This meter receiving member 115 is provided with an uneven fitting portion 116 intermittently in the circumferential direction. In this case, the snap engagement of the concave / convex fitting portion 116 with respect to the annular groove 60 of the cap member 51 can be easily performed.

  FIG. 12 shows another example of the support member. The support member 110 is provided with a substantially semicircular arc-shaped protruding portion 112 on the primary side of the engaging portion 111. Thus, when the protrusion 112 is formed in the engaging portion 111, a long engagement region with the locking portion 80, which is a locking groove formed continuously on the outer periphery of the crimping member 20, can be secured. In addition, it is possible to prevent tilting when moving with the advancement and retraction of the crimping member 20.

DESCRIPTION OF SYMBOLS 1 Meter unit main body 2 Base body 2a Upper surface 3 Primary side attachment member 4 Secondary side attachment member 5 Water meter 6 Retaining band 8 Meter receiving member 50 Check valve 51 Cap member 60 Annular groove 73 Rail part 75 Projection part 79 Detachment part Engagement part 81 Concave and convex part 85 Concave groove P Shaft core

Claims (5)

  A primary side mounting member and a secondary side mounting member for crimping and fixing a water meter are attached in the longitudinal direction of the base body having a protrusion for preventing reverse installation of the meter, and a check valve is mounted on the secondary side mounting member. A cap member for housing the screw, and a meter receiving member is provided between the cap member and the upper surface of the base body, and the upper portion of the meter receiving member and the cap member are connected to the meter via an attaching / detaching engaging portion. A meter unit, wherein the receiving member is detachable from the cap member.   The detachable engagement portion includes an uneven fitting portion provided on an upper portion of a meter receiving member and an annular groove provided on a cap member, and the uneven engagement portion is detachably snap-engaged with the annular groove. The meter unit according to 1.   A long holding band having the protrusions is placed on the upper surface of the base body, and the primary side mounting member and the secondary side mounting member are fixed to the upper surface of the base body with the holding band interposed therebetween. The meter unit according to claim 1 or 2.   The holding band is provided with a rail portion for guiding the meter receiving member along the axis for mounting the meter, and the meter receiving member is provided with a concave groove that can be fitted to the rail portion, and the rail portion, the concave groove, The meter unit according to claim 3, wherein the meter receiving member is slidably mounted on the holding band.   5. The holding band is provided to be replaceable with respect to the base body in order to make the mounting positions of the primary side mounting member and the secondary side mounting member correspond to the inter-surface dimension of the water meter. The meter unit described in.

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