JP4541000B2 - Water meter unit - Google Patents

Description

  The present invention relates to a water meter unit for holding a water meter for measuring water usage, for example, a water meter in which a water meter is installed in a pipe shaft provided near each doorway of an apartment house. Regarding the unit.

Conventionally, a storage space called a pipe shaft has been provided near the doorway of an apartment house, etc., and a meter unit with a water meter for measuring water usage is installed in this storage space. Yes. Since the water meter installed in the middle of the water pipe needs to be replaced after a lapse of a predetermined period stipulated by the Measurement Law, it is detachably attached to the meter unit main body.
When a water meter is attached to the meter unit, if it is attached in the opposite direction with respect to the flow path, a correct measurement guideline will not be displayed, so this must be avoided. If the metering portion of the water meter is tilted, the meter performance, metering accuracy, durability, etc. will be significantly reduced. For these reasons, when replacing the water meter, it is necessary to install the meter with the measuring part level and the upstream and downstream directions correct.

  As a water meter unit that prevents erroneous installation of a water meter, the amount is placed on the middle lower side of a substantially rectangular frame that penetrates the water meter support device that supports the water meter in a replaceable manner. By forming a detent part that fits the rib of the water device, and the rib on the lower surface side of the water meter is locked to this detent part, the meter is mounted with the rotation or lateral displacement of the water meter and the mounting direction being incorrect. There is an apparatus for supporting a water meter that prevents this (for example, see Patent Document 1).

  In addition, a water meter position restricting portion that protrudes in a trapezoidal shape upward in the surface of the lower connecting portion of the main body frame integrally formed by pressing a single plate member and restricts the water meter in a downward direction, There is a connection device for a water meter that positions the water meter in a downward direction by contacting the rib on the bottom surface of the water meter when the water meter is attached to the water meter position restricting portion (for example, (See Patent Document 2). In this water meter connection device, if the water meter is to be mounted in the reverse direction, the disc-shaped position restricting portion provided on the first attachment is triangularly moved upward in the plane of the lower connecting portion. It hits the protruding part formed in a shape, so that it can not be set to the normal position, so that the direction of the water meter is confirmed to be opposite.

In addition, a restriction projection is provided on the horizontal plate portion on the upper surface of the base portion having a receiving portion connected to the water pipe side, and the bottom portion of the water meter is directly placed on the restriction projection so that the horizontal position of the water meter There is a watering device attachment / detachment device that is connected while regulating (see, for example, Patent Document 3).
JP-A-11-131538 Japanese Patent No. 2660813 Japanese Patent Publication No. 6-102911

The water meter has a nominal diameter of 13 mm. As shown in FIG. 9, this water meter has a shape in which the connection to the meter unit is eccentric in the horizontal direction in addition to the vertical direction with respect to the metering portion. ing. Further, a rib projecting in a cross shape is formed on the bottom surface side of the measuring portion. This water meter is classified into a short type and a long type, which are attached to a short meter unit and a long meter unit, respectively. Thus, the water meter with a nominal diameter of 13 mm has a different shape from the nominal diameters of 20 mm and 25 mm.
When this water meter is to be attached to the meter unit, the water meter support device of Patent Document 1 is for attaching a water meter having a nominal diameter of 20 mm, 25 mm, etc. It cannot be installed.

  Moreover, in the connection device of the water meter of patent document 2, the water meter position control part provided in the main body frame is planar, and the rib of a water meter is mounted in this water meter position control part. Since it is a structure to be connected, the mounting direction of the water meter could not be restricted when a water meter with a nominal diameter of 13 mm was placed on the water meter position restricting portion. Therefore, even if the first and second attachments are mistakenly attached to the upstream and downstream sides of the water meter, the water meter can be attached to the connecting device. On the other hand, there was a possibility of mounting in the opposite direction.

  Since the apparatus for attaching and detaching the water meter of Patent Document 3 has a structure in which the bottom surface of the water meter is directly supported by the restriction protrusion while avoiding the rib on the bottom surface of the water meter, In the case where it was not possible to regulate the mounting in the direction and an attempt was made to mount a water meter having a nominal diameter of 13 mm in the same manner as described above, there was a risk of connection in the opposite direction.

Here, the meter unit body to which the water meter is connected is fitted with an alternative pipe (steel pipe or resin pipe) as an alternative to the meter for the period until the water meter is installed, and the water flow test of the entire pipe including the meter unit It is necessary to do. On the other hand, in the water meter 103 having a nominal diameter of 13 mm, as shown in FIG. 9, the lower portion 106 a of the screw portion 106, which is a connection portion, is on the lower surface than the bottom surface 107 a of the water amount measuring portion 107. Therefore, in the case of a meter unit that fits and supports the rib piece 104 on the lower surface of the meter in the position restricting portion, there is a possibility that the substitute tube may interfere with the position restricting portion and cannot be attached even if the meter substitute tube is attached to the unit. is there.
In order to avoid this, the shape of the position restricting portion is not to fit the rib piece 104 on the lower surface of the meter, but as shown in FIG. 9, a concave portion 102 is provided at the center of the position restricting member 101 to form a wide shape. The two position restricting members 101 and 101 must support both ends of the water amount measuring unit 107. However, in this structure, when attaching a heat insulating material to the outer periphery of the water meter 103, it is difficult to provide a shape that can sufficiently block the outside air due to the position restricting members 101 and 101 being obstructed. There was a problem. For this reason, especially in cold regions and in winter, the heat retention is insufficient, and there is a possibility that the metering function of the water meter cannot be exhibited.

  The present invention has been developed in order to solve the conventional problems, and the object of the present invention is to provide a water meter unit capable of connecting a water meter whose connecting portion is eccentric to the measuring portion. It is possible to reliably prevent the water meter from being attached in the reverse direction, tilting or rotating and being installed incorrectly, and the metering function of the water meter can be fully used even in cold regions and in winter. It is in providing the water meter unit which can be demonstrated.

In order to achieve the above object, the invention according to claim 1 is characterized in that a meter for a water meter is provided in a first support mechanism and a second support mechanism provided on both sides in the longitudinal direction of a base body having a shape such as a base shape and a frame shape. In the water meter unit for joining the first connection part and the second connection part provided on both sides of the part, the water meter has an axis of the first connection part and a second connection part on the left and right sides with respect to the measuring part. And a rib projectingly formed at the center of the flow passage direction on the lower surface of the measuring portion. The upper portion of the base has a width with respect to the central axis direction of the first and second support mechanisms. A regulating member protrudingly formed at a position eccentric to one side of the direction, the regulating member having an upper end positioned below the outer peripheral lower surface of the first and second connecting portions, and one side surface of the rib while disposed in a position to engage in, engage the rib of the regulating member The length in the direction, when attached to the different connections direction the meter, the lower surface of the ribs is set to a length enough to ride on the upper end of the regulating member, whereas, when the joining of the meter to the proper position, the In the water meter unit, the upper one side surface of the restricting member is engaged with one side surface of the rib to maintain the metering portion of the meter in a horizontal state.

  The invention according to claim 2 is the water meter unit, wherein the restricting member is a rod-like restricting piece integrally projecting from a base-shaped base.

  According to the first aspect of the present invention, a water meter with an eccentric connection portion can be connected to the metering portion, and the water meter is connected in the opposite direction, or in a tilted or rotated state. This is a water meter unit that can reliably prevent the meter from being erroneously attached. In addition, since a heat insulating material having a shape that wraps the entire meter can be attached, the metering function of the meter can be sufficiently exhibited even in a cold region or in winter.

  According to the second aspect of the present invention, erroneous mounting of the meter can be prevented at low cost, and when the heat insulating material is mounted, it can be easily mounted from the left and right sides of the meter, and the heat retaining effect is high. This is a water meter unit to which materials can be attached.

A preferred embodiment of a water meter unit according to the present invention will be described with reference to the drawings.
In FIG. 1, the meter unit main body 1 is for attaching a first connection portion 51 on the upstream side of a water meter 50 and a second connection portion 52 on the downstream side of a base body 4 having a base shape. A first support mechanism 2 and a second support mechanism 3 are provided. The first and second connection portions 51 and 52 are, for example, connection screws made of male screws, and the first and second support mechanisms 2 and 3 are screwed with the connection screws 51 and 52. A screw fixing type having a female screw to be fixed, or a support member for supporting the meter at both ends of the base, respectively, and pressing one end side of the meter by pressing the support member on one side with a rotary handle, It is possible to adopt a crimping fixing type that is clamped and fixed to the support member of the other, a fixing method by other slide types, or other fixing methods, and the meter 50 is fixed to the first and second supporting mechanisms. I have to. In the present embodiment, the first and second support mechanisms 2 and 3 are a pressure-fixing type meter unit body 1 that clamps and fixes both ends of the meter 50.
In addition, the base 4 to which the first and second support mechanisms 2 and 3 are attached has a base shape (long shape as shown in the present embodiment), but may have other forms, for example, It may be a water meter unit in which the base is formed in a frame shape.

A restricting member 10 is erected on the base 4, and the restricting member 10 is a rod-like restricting piece that is integrally projected on the base 4.
The regulating member 10 has an upper end 10a below the outer peripheral lower surfaces 51a and 52a of the first and second connection portions 51 and 52 of the meter 50 fixed to the first and second support mechanisms 2 and 3, that is, the meter unit. It is positioned below the bearing surfaces 18 and 28 and is disposed at a position to engage with the rib side surface 55 in the flow path direction of the flat cross-shaped rib 54 formed on the lower surface 53 of the meter 50. is doing.
The regulating member 10 is formed on the perpendicular S of the central axis O of the first and second support mechanisms 2 and 3 in FIGS. 2 and 3, and the length L in the direction of engagement with the rib 54 is the central axis. The distance L ₁ from O to the engaging portion of the rib side surface 55 and the distance L ₂ longer than the distance L ₁ are combined symmetrically with the central axis O, and the regulating member 10 is eccentric from the perpendicular S of the central axis O. The asymmetric shape. Distance L ₂ of the regulating member 10, the upper end of the first and second connecting portions 51 and 52 when attempting to connect with a different connection direction, the lower surface 54a is regulating member 10 of the meter lower surface of the rib 54 of the meter 50 The first and second connecting portions 51 and 52 are set so as not to be placed on the bearing surfaces 18 and 28. In this embodiment, L = about 12 mm, L ₁ = about 2 mm, L ₂ = about 10 mm, and the engagement height between the regulating member 10 and the rib side surface 55 when the meter 50 is connected in the correct connection direction. The length h is set to about 5 mm.
The width W (see FIG. 2) of the regulating member 10 may be the minimum necessary to engage with the side surface 55 of the rib 54 of the meter 50 and prevent its rotation. In consideration of formability when the regulating member 10 is provided integrally with the base 14 of the meter unit and the strength of the regulating member 10 itself, W is set to about 8 mm. The regulating member 10 is desirably provided integrally with the base body 4 as described above, but a member provided separately from the base body 4 can be fixed.

The base 5 is provided in a hollow shape having a substantially trapezoidal cross section with an open bottom, and has a stronger strength than a hollow shape having a rectangular cross section. For this reason, the base | substrate 4 has the intensity | strength which can fully endure the reaction force at the time of pressing and holding the meter 50, aiming at weight reduction.
The holding part 6 is provided so as to stand up from the base part 5 through a gently curved surface. The holding parts 6 and 6 are provided with mounting holes 6a and 6a coaxially, and the mounting holes 6a and 6a are first supported. The mechanism 2 and the second support mechanism 3 are connected. In the holding parts 6, 6, the mounting holes 6 a, 6 a and the vicinity thereof are provided in a planar shape, and the enlarged diameter part 14 a of the cylindrical member 14 of the first support mechanism 2 and the enlarged diameter part 7 a of the cylindrical member 7 of the second support mechanism 3. Is in contact with the surface. Reference numeral 4a denotes a notch provided by notching both ends of the base 4. The base 4 can be fixed to a floor surface or a wall surface by engaging a not-shown bolt with the notch 4a.
The substrate 4 in the present embodiment is made of, for example, ductile cast iron, and the entire surface is coated with the epoxy resin powder with a film thickness of about 600 μm at maximum. It is possible to select from these materials, and painting can be omitted.

  The first support mechanism 2 includes a cylindrical member 14 provided in the holding portion 6, a slide cylinder 12 slidably provided on the circumferential surface of the cylindrical member 14, and a rotating member screwed onto the outer periphery of the cylindrical member 14. 11, and the slide cylinder 12 is provided so as to be able to advance and retract by rotating the rotating member 11. In the present embodiment, the first support mechanism 2 on the upstream side is pressed against the meter 50, but a pressing structure may be provided on the downstream side.

In FIG. 5, the enlarged diameter portion 14 a is provided on the outer peripheral side of the cylindrical member 14, and when the cylindrical member 14 is inserted into the mounting hole 6 a, the enlarged diameter portion 14 a comes into contact with and engages with the outer surface of the holding portion 6. In this state, the cylindrical member 14 is fixed to the holding portion 6 by screwing the nut 33 into the male screw portion 14b provided on the outer periphery on the connection side with the meter. The cylindrical member 14 is provided with an elastic washer 34 such as NBR or PE resin in the mounting hole 6a, so that the cylindrical member 14 can be attached under an appropriate frictional force without removing the nut 33 by the elastic force of the washer 34. It can be rotated. The washer 34 may be interposed between the enlarged diameter portion 14 a of the cylindrical member 14 and the holding portion 6.
The cylindrical member 14 is provided with an elbow part 21, and a water stopper 36 is provided on the elbow part 21 via a union nut 35 so that the position of the elbow part 21 can be adjusted.
As will be described later, the rotating member 11 is also screwed into the male screw portion 14b, and the male screw portion 14b is commonly used for screwing the nut 33 and the rotating member 11, so that the cylindrical member 14 is attached to the mounting hole 6a. It is not necessary to provide a screw for fixing to the screw separately from the screwing of the rotating member 11.

In addition, a pressure reducing valve (not shown) can be attached between the elbow portion 21 and the stop cock 36, and in this case, the union nut 35 is connected to the downstream side of the stop cock 36. The pressure reducing valve is an adjustment valve that maintains the pressure on the secondary side at a certain constant pressure that is lower than the fluid pressure on the primary side, and can prevent high pressure from being applied to the meter.
Usually, when connecting the meter unit to other pipes, it is necessary to connect to a water supply branch pipe 38 branched from a water supply main pipe (not shown) using a joint having a union connection structure. In the meter unit main body 1 of the present embodiment, since the union nut 35 can be attached to the elbow part 21, the water supply branch pipe 38 is directly connected to the meter unit main body 1 without using a union joint. It is possible to reduce the number of parts and simplify the piping work. Further, as described above, a water stop valve 36, a pressure reducing valve, and the like can be appropriately selected between the meter unit main body 1 and the water supply branch pipe 38, and can be directly connected to the meter unit main body 1 side.
Thus, by allowing the pressure reducing valve to be connected to the meter unit main body 1 side via the union nut 35, for example, when cleaning the inside of the pipe after installing the meter unit, the pressure reducing valve is replaced. Thus, it is possible to perform the cleaning work by connecting the temporary pipe, and then removing the temporary pipe and attaching the pressure reducing valve.
In addition, in this embodiment, although it is set as the elbow shape which provided the elbow part 21 in the cylindrical member 14, other shapes, such as a straight pipe, may be sufficient.

In the slide cylinder 12, the cylindrical portion 12a is provided so as to be able to be inserted into the inner peripheral surface 14d of the cylindrical member 14 with the O-ring 22 attached, and slides by sliding the cylindrical portion 12a on the inner peripheral surface 14d. The cylinder 12 is provided so as to be slidable with respect to the cylindrical member 14.
The flange portion 17 provided integrally with the slide cylinder 12 is provided with a larger diameter than the male screw portion 14 b of the cylindrical member 14. The outer end surface of the slide cylinder 12 is provided with an end portion 51 b that is one end surface of the meter 50 and a clamping surface 16 that is clamped via an O-ring 23. When the clamping surface 16 is cut, it may be provided in an inlay structure in which the end portion 51b of the meter is fitted. In this case, the end portion 51b can be positioned as described later. The O-ring 23 may have another sealing member shape as long as it is annular.
Further, by cutting only the abutting portion of the clamping surface 16 with the end portion 51b and making the rest as a cast surface or a finished surface, it is possible to reduce the processing man-hour and processing time of the slide cylinder 12. ing.

  An arc-shaped support surface 18 that supports the first connection portion 51 of the meter 50 is projected from the outer end portion 13 of the slide cylinder 12, and the first connection portion 51 is placed on the support surface 18. It is possible. A linear anti-rotation groove 19 extending in the sliding direction of the slide cylinder 12 is formed on the bearing surface 18, and a cylindrical (rod-like) pin 20 protruding in the vertical direction from the base 4 in the anti-rotation groove 19. Locked.

In the rotating member 11, the female screw portion 11 b provided on the inner peripheral side is screwed with the male screw portion 14 b of the cylindrical member 14, and the diameter of the connecting side of the meter 50 is increased by expanding the diameter of the female screw portion 11 b. A step portion 11a is provided. 11c is a stepped surface which is formed by providing an enlarged diameter stepped portion 11a, and is a surface that comes into contact with the back surface 17a on the back side of the clamping surface 16 of the flange portion 17 provided at the outer end portion 13 of the slide cylinder 12. By rotating the rotating member 11, the back surface 17a is pressed by the step surface 11c and slid. When the stepped surface 11c and the back surface 17a come into contact with each other, the rotating member 11 can be rotated while being aligned by the slide cylinder 12.
A retaining ring 41 is provided in the annular groove portion 11d provided on the meter side of the enlarged diameter step portion 11a, and the flange portion 17 and the outer end portion 11e of the rotating member 11 are latched via the retaining ring 41. . When the rotating member 11 is retracted to the opposite side of the meter 50, the retaining ring 41 is hooked on the slide cylinder 12, so that the slide cylinder 12 is also retracted as the rotating member 11 rotates and retracts.
The operation handle 15 formed in a fin shape is radially provided integrally with the rotating member 11 so that the rotating member 11 can be manually rotated. Each operation handle 15 has a through hole 15a. The through hole 15a and the through hole 4b formed in the upper part of the base 4 are provided so as to be fastened by a fastening member such as a binding band (not shown). Can prevent the rotation of the rotating member 11 and maintain the meter 50 held in the meter unit main body 1.
Further, the female screw portion 11b has both a locking function for rotatably locking the rotating member 11 to the cylindrical member 14 and a function for moving the slide cylinder 12 forward and backward, so that the cylindrical member 14 is compact. Can be made lighter and lighter, and the meter unit body 1 is downsized.

  The second support mechanism 3 includes a substantially cylindrical tubular member 7, a nut member 8 that is screwed into the tubular member 7 and has a support portion 28 on which the downstream connection portion 52 of the meter is placed, A check valve cartridge 9 incorporated in the tubular member 7 and a pipe end anticorrosion core 40 are used. The second support mechanism 3 is mounted in a mounting hole 6 a coaxial with the first support mechanism 2, so that the meter 50 can be mounted in a reliably centered state.

  Reference numeral 7a denotes an enlarged diameter portion. The tubular member 7 is inserted into the downstream side mounting hole 6a of the base body 4 from the upstream side so that the enlarged diameter portion 7a is engaged with the mounting hole 6a. The cylindrical member 7 is fixed by screwing a nut 42 into the male screw portion 7b formed in the above. A pipe female thread 43 is formed on the downstream inner periphery of the tubular member 7, and a downstream pipe 44 is provided so as to be connectable to the pipe female thread 43.

  The check valve cartridge 9 is accommodated in a cylindrical portion 46 formed to extend from the cylindrical member 7 to the connection side of the meter 50, and the nut member 8 is screwed onto the outer periphery of the cylindrical portion 46. A male screw 46a is formed, and an O-ring 47 for sealing the nut member 8 and the cylindrical portion 46 is disposed closer to the meter 50 than the male screw 46a. The check valve cartridge 9 is liquid-tightly attached to the stepped portion 8d of the nut member 8 using the elastic force of the O-ring 25 attached to the stepped mounting portion 9a provided on the meter 50 side. It is possible to always maintain the check performance of the check valve cartridge 9 and to remove the check valve cartridge 9 integrally with the nut member 8 when the nut member 8 is removed from the tubular member 7. It has excellent maintainability.

  On the inner peripheral side of the nut member 8, a female screw 8 a that is screwed with the male screw 46 a of the tubular member 7 and a step portion 48 that can fit the end portion of the check valve cartridge 9 are formed. Further, on the outer peripheral side of the nut member 8, the nut member 8 is manually rotated, and fin-shaped grip portions 8 b that can be manually attached to and detached from the cylindrical member 7 are radially projected integrally with the nut member 8. Is formed. The grip portion 8b is formed so as to cover the region where the female screw 8a of the nut member 8 is formed in the axial direction, thereby minimizing the length of the nut member 8 in the axial direction. In this manner, by overlapping the formation regions in the axial direction of the gripping portion 8b and the female screw 8a, it is not necessary to increase the length of the nut member 8, and it is possible to shorten the length of the meter unit main body 1 by extension. It becomes. Note that the gripping portion may be formed in a shape other than a protruding shape, for example, a concave shape.

The clamping surface 26 of the nut member 8 with the meter 50 is formed in an inlay structure that is one step lower than the outer diameter with which the downstream end 52b of the meter 50 can come into contact, as with the upstream cylindrical member 14. The clamping surface 26 is provided with an O-ring 24 that seals between the end 52b of the meter. Thus, since the clamping surface 26 and the clamping surface 16 on the slide cylinder 12 side are provided in an inlay structure, when the meter 50 is clamped between the cylindrical member 7 and the cylindrical member 14, the end portion 51 b of the meter 50. , 52b are locked to the inlay portion to prevent the meter from being removed from the cylindrical member 7 and the cylindrical member 14. The O-ring 24 may have another sealing member shape as long as it is annular.
The processing of the clamping surface 26 is performed by cutting only the portion in contact with the end 52a in the same manner as the slide cylinder 12, and setting the rest as a cast surface or a finished surface. Shortening is possible.

The support portion 28 is provided so as to extend from the vicinity of the lower portion of the nut member 8 on the connection side of the meter, and a connection portion 52 on the downstream side of the meter 50 is provided on the support portion 28 so as to be placed thereon. The gripping portion 8b of the nut member 8 is provided so as to radiate every 90 ° in the circumferential direction in the vertical and horizontal directions with the support portion 28 at the bottom. The number and shape of the gripping portions 8b are as follows. It is optional, and at least two support portions 28 are provided at the lowermost portion, so that they are provided at two locations in the horizontal direction, so that when the cylindrical member 7 is inserted into the mounting hole 6a on the downstream side of the base body 4, the gripping portion 8b The nut member 8 is provided so as to be accurately positioned in the circumferential direction.
Further, when the nut member 8 is screwed to the tubular member 7, the tubular member 7 is attached to the attachment hole 6a in a state where the bearing portion 28 is adjusted in advance so as to be the lowermost portion. When the member 8 is removed from the tubular member 7 and reattached, when the inner end surface 8c provided on the inner peripheral side of the nut member 8 comes into contact with the end surface 7c of the tubular member 7, the support portion 28 is made the lowermost portion. The positioning in the rotational direction when the nut member 8 is tightened can always be the same, and the state of the support portion 28 relative to the downstream end 52a can be reliably maintained. It is.

  The pipe end anti-corrosion cores 39 and 40 are water supply branch pipes 38 and downstream pipes 44 which are inner surface coated steel pipes connected to a piping system such as the meter unit body 1 for water supply and hot water supply using inner surface coated steel pipes. It prevents the fluid from coming into contact with the end of the pipe that has not been protected against corrosion, thereby preventing the occurrence of rust, which prevents the fluid from becoming dirty, and rusting from damaging or damaging this piping component.

  As described above, the meter 50 is formed by projecting the flat cross-shaped rib 54 on the lower surface 53, and the restriction member 10 is provided on the rib side surface 55 in the flow path direction so as to be engageable. Moreover, the 1st, 2nd connection parts 51 and 52 are the shapes eccentrically right and left and up and down with respect to the measurement part 56 which measures water quantity.

Next, the effect | action of the said embodiment in the water meter unit of this invention is demonstrated.
When the meter 50 is connected to the meter unit main body 1, if the first and second connection parts 51 and 52 of the meter 50 are placed in the correct connection direction as shown in FIG. The portions 51 and 52 are placed on the bearing surfaces 18 and 28 as they are, and the regulating member 10 protruding from the base 4 is engaged (contacted) with the side surface 55 of the rib 54 in the flow path direction on the meter lower surface 53. Therefore, the rotation around the axis P that is the central axis of the first and second connection portions 51 and 52 is restricted. At this time, since the axis P of the first and second connecting portions 51 and 52 in the meter 50 having a nominal diameter of 13 mm is eccentric from the measuring portion 56 in the left-right direction, the rotational moment M acts on the meter 50 in the direction of the arrow. However, the rib side surface 55 is pressed against the restricting member 10, and the horizontal state of the measuring unit 56 can be maintained in order to maintain this state.

  When the meter 50 is connected to the meter unit main body 1, the slide cylinder 12 slides in the axial direction by rotating the rotating member 11 of the first support mechanism 2 in this state, and the slide cylinder 12 is the cylindrical member 14. The meter end 51b is moved forward and backward with the rotating member 11 screwed and supported, and the meter 50 thus pressed slides in the direction of the second support mechanism 3 so that the end 52b contacts the clamping surface 26, and By rotating the rotating member 11, the meter 50 is sandwiched between the slide cylinder 12 and the cylindrical member 8 and connected to the meter unit 1 main body.

Further, as shown in FIG. 4, even if the first and second connection portions 51 and 52 of the meter 50 are to be connected in different connection directions, the regulating member 10 can be engaged with the side surface 55 of the rib 54 in the flow path direction. Yes, and cannot be engaged in different directions, that is, when the meter 50 is placed in the correct connection direction, the restricting member 10 sets the length L in the engagement direction to the rib 54 from the central axis O. The distance L ₁ to the engagement portion of the side surface 55 of the rib and the center axis O are symmetrically combined with the distance L ₂ longer than the distance L ₁ and provided in an asymmetric shape that is eccentric from the perpendicular S of the center axis O. Therefore, the regulating member 10 does not engage with the side surface 55 of the rib of the meter 50 when it is not in the flow path direction, and the rib 55 does not move even if the meter 50 is placed on the bearing surfaces 18 and 28. Contact the regulating member 10 from above Since the first and second connecting portions 51 and 52 of the meter 50 are lifted from the bearing surfaces 18 and 28 of the meter unit by the engagement height h shown in FIG. 3, the meter 50 can be placed. In addition, erroneous mounting of the meter 50 can be reliably prevented.

  Since the regulating member 10 has an upper end 10a positioned below the outer peripheral lower surfaces 51a and 52a of the first and second connecting portions 51 and 52 of the meter 50, the meter unit 1 is supported before the meter 50 is connected. When the meter replacement tube C placed on the receiving surface is connected, the meter replacement tube C does not contact the regulating member. Further, the restricting member 10 engages with the side surface 55 of the rib 54 of the meter 50 to prevent the meter 50 from rotating, and when the meter 50 is to be connected in an incorrect connection direction, The lower surface 54 a of the rib 54 is placed on the upper surface 10 a of the regulating member 10 so that the first and second connection portions 51 and 52 of the meter 50 do not contact the support surfaces 18 and 28 of the meter unit main body 1. Therefore, it is sufficient that the meter installation operator can recognize that the meter 50 is an incorrect pipe. Therefore, a sufficient gap is provided between the meter 50 and the meter unit main body 1 after the meter 50 is connected. It can be made into a thin shape that can be formed, and by providing a heat insulating material with a shape that covers the entire outer periphery of the meter in the gap, the outside air is surely shut off, and excellent heat retention is achieved. It is possible to sufficiently exhibit the metering function of the meter 50 is. Further, if the regulating member 10 is formed in a rod shape, the regulating member 10 is provided on the perpendicular S of the central axis O of the first and second support mechanisms 2 and 3, so that the heat insulating material is attached from the left and right of the meter 50. In addition, since the heat insulating material can be shaped so as not to come into contact with outside air, the meter 50 can be further protected from freezing.

  6 and 7 show another embodiment of the water meter unit according to the present invention, in which a long-type meter 61 is attached to the meter unit main body 60. FIG. In this case, the regulating member 62 is eccentric to the opposite side to the above-described embodiment with respect to the center line Q of the first and second support mechanisms 2 and 3. In this way, the restricting member can be decentered to the left or right side from the center line of the first and second support mechanisms. In the water meter unit of this embodiment, the same parts as those of the above embodiment are denoted by the same reference numerals, and the description thereof is omitted. Further, the meter 61 can be connected in the same manner as in the case of the short type, and the operation and effect thereof are also the same.

  FIG. 8 is an end view showing still another embodiment of the water meter unit according to the present invention. An engaging portion 72a is provided on the regulating member 72 of the meter unit main body 70 so as to project substantially horizontally. The portion 72 a is engaged with the rib side surface 55 in the flow channel direction of the meter 50. In this case, since the distal end side of the engaging portion 72a makes point contact with the rib side surface 55, the level of the meter 50 when the meter 50 is connected to the meter unit main body 70 can be further increased. Therefore, the tilt and rotation of the meter 50 can be reliably prevented.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a water meter unit that holds a meter in which a metering portion and a connecting portion are eccentric among meters for metering water usage, for example, in a pipe shaft provided near each doorway of an apartment house. In addition to this, it can be used for embedding other than pipe shafts, as well as piping as a holding device that connects the connection part eccentric from the main body. It can be applied to various connection mechanisms as well as equipment.

It is front sectional drawing which shows one Embodiment of the meter unit for water supplies of this invention. It is a top view which shows one Embodiment of the meter unit for water supplies of this invention. It is an AA line end view of FIG. It is an end view which shows the state which connected the meter accidentally. It is a partially expanded sectional view of the water meter unit of FIG. It is front sectional drawing which shows other embodiment of the water meter unit of this invention. It is a top view which shows other embodiment of the meter unit for water supplies of this invention. It is an end view which shows other embodiment of the meter unit for water supplies of this invention. It is sectional drawing which shows an example of the conventional water meter unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Meter unit main body 2 1st support mechanism 3 2nd support mechanism 4 Base | substrate 10 Restriction member (regulation piece)
10a upper end 50 meter 51 first connection portion 51a outer peripheral lower surface 52 second connection portion 52a outer peripheral lower surface 53 meter lower surface 54 rib 55 rib side surface

Claims (2)

A first connection mechanism and a second connection section provided on both sides of the metering section of the water meter are provided on the first support mechanism and the second support mechanism provided on both sides in the length direction of the base body having a shape such as a base shape and a frame shape. In the water meter unit to be joined, the water meter is configured such that the axis of the first connection portion and the second connection portion is decentered in the left-right direction with respect to the measurement portion, and the flow passage center on the lower surface of the measurement portion A rib is projected and formed at a position, and a regulating member is projected and formed on the upper portion of the base at a position eccentric to one side in the width direction with respect to the central axis direction of the first and second support mechanisms. The restricting member is disposed at a position where the upper end is positioned below the outer peripheral lower surface of the first and second connecting portions and is engaged with one side surface of the rib, and the rib of the restricting member the length of longitudinal engaging the mounting to different connecting direction meter When the meter is joined to an appropriate position, the upper side surface of the regulating member is engaged with one side surface of the rib. A meter unit for water supply, characterized in that the metering section of the meter is maintained in a horizontal state.   2. The water meter unit according to claim 1, wherein the restriction member is a rod-like restriction piece integrally provided on a base-shaped base.

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