JP3883549B2 - Water connection device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a connection device for a water meter suitable for use in connecting a water meter in the middle of a water pipe arranged on the floor of an apartment or the like.

  In general, a water meter connected in the middle of a water pipe needs to be replaced as a result of the expiration date of a specified certification. For this reason, a predetermined connection device is connected in the middle of a water pipe, and a water meter is made detachable from the connection device.

Conventionally, as this type of connecting device, a connecting device for a water meter disclosed in Japanese Patent No. 2903388 already proposed by the present applicant is known. The connection device includes a pair of connection plate portions having a connection mechanism portion and a plurality of connecting rod portions for connecting the pair of facing connection plate portions, and a water pipe connection portion provided at an outer end of each connection mechanism portion. In the connecting device for a water meter, wherein the water meter is detachably connected between the water meter connecting portions provided at the inner ends of the connection mechanism portions, The lower part is connected by a pair of lower connecting rods that are horizontally spaced apart, and the upper part that is positioned vertically above one of the lower connecting bars is connected by an upper connecting bar. In addition to facilitating and speeding up the work, the overall cost of the apparatus can be reduced, and the size and weight can be reduced.
Japanese Patent No. 2903388

  However, the above-described conventional device for connecting water meters has the following problems to be solved.

  First, the components (parts) used in this type of connecting device are usually made of gun metal (a type of bronze casting) that is easy to cast, withstands wear and corrosion, and has high toughness. In addition to 90% copper and 10% tin, it usually contains lead for the purpose of improving processability and yield, and this lead may be mixed into tap water (drinking water). There is.

  Secondly, since this type of connecting device is assumed to be installed mainly in a meter box embedded in the ground, it is difficult to install in a pipe space on the floor of an apartment or the like that has been increasing in recent years. That is, such an installation space is usually arranged together with a water pipe, a gas pipe, an electric wire, and the like, so the installation space is limited and cannot be easily installed. Replacement and maintenance cannot be performed easily.

  An object of the present invention is to provide a connecting device for a water meter that solves the problems existing in the background art.

  In order to solve the above-described problem, the present invention includes a pair of opposing connection portions 2f and 2r connected in the middle of the water pipe P and a connection portion 3 for connecting the connection portions 2f and 2r, and a pair of connection portions. When configuring the connecting device 1 of the water meter in which the water meter M is configured to be detachable between 2f and 2r, a pair of connecting portions 2f and 2r are connected to the connecting portion 3 and support bases 4f and 4r. A primary side connection mechanism 5f and a secondary side connection mechanism 5r supported by mounting holes 4fh and 4rh formed through the support bases 4f and 4r are configured, and the primary side connection mechanism is provided at the outer end. A primary-side outer cylinder portion 11 having a connection end portion 5fo connected to the water pipe Pf side, and a detachable end that is extendably inserted into the primary-side outer cylinder portion 11 and that attaches and detaches the water meter M to the inner end. Primary side inner cylinder part 12 which has part 5fi, and expansion and contraction of this primary side inner cylinder part 12 The secondary connection mechanism 5r has a connection end 5ro connected to the water pipe Pr side at the outer end, and a check valve from the inner end opening 16i to the inside. A secondary side outer cylinder part 16 capable of accommodating the part 15, and a secondary end part 5ri which is attached to and detached from the inner end opening 16i to the secondary side outer cylinder part 16 and attaches and detaches the water meter M to the inner end. The primary side outer cylinder part 11, the primary side inner cylinder part 12, and the secondary side which comprise the water channel Rf and Rr between the attachment / detachment end parts 5fi and 5ri and the connection end parts 5fo and 5ro are provided. The outer cylinder part 16 and the secondary side inner cylinder part 17 are formed of a lead-free material.

  In this case, according to a preferred aspect of the invention, an elbow pipe 11 s that can be attached by changing the protruding direction of the tip can be used for the primary side outer cylinder portion 11. The support bases 4f and 4r can be provided with anchor hook attachment portions 18f and 18r attached to anchor hooks Af and Ar provided on the installation surface F. Further, the connecting portion 3 includes a lower stay 3d disposed on the lower side of the center, and a pair of left and right disposed on both upper sides of the lower stay 3d and disposed at a position below the axis H of the water meter M by a predetermined height Ld. The upper stays 3p and 3q can be configured, and the lower stay 3d is provided with a water meter reversal prevention unit 19 that contacts the water meter M in the reverse direction and prevents the water meter M from being reversed. be able to.

  According to the connecting device 1 of the water meter according to the present invention having such a configuration, the following remarkable effects can be obtained.

  (1) In order to form the primary side outer cylinder part 11, the primary side inner cylinder part 12, the secondary side outer cylinder part 16, and the secondary side inner cylinder part 17 which comprise the connecting device 1 of a water meter with a lead-free material. In addition, there is no risk of lead being mixed into tap water (drinking water), and the safety of tap water can be further increased. In addition, expensive lead-free materials can be used only where needed, thus reducing the overall cost. be able to.

  (2) The secondary-side connection mechanism portion 5r has a connection-end portion 5ro at the outer end, and a secondary-side outer cylinder portion 16 that can accommodate the check valve portion 15 from the inner-end opening 16i; Since the secondary side inner cylinder part 17 which is attached to and detached from the inner end opening 16i of the secondary side outer cylinder part 16 and has the detachable end part 5ri at the inner end is provided, the check valve part 15 can be easily replaced and maintained. It can be carried out.

  (3) According to a preferred embodiment, if an elbow pipe 11s that can be attached to the primary side outer cylinder portion 11 by changing the protruding direction of the tip is used, the floor of a condominium or the like where gas pipes and electric wires are also arranged Even in a limited installation space S such as a pipe space, the water meter M can be easily replaced and maintained.

  (4) By providing the anchor hook attaching portions 18f and 18r attached to the anchor hooks Af and Ar provided on the installation surface F on the support bases 4f and 4r according to a preferred embodiment, it is easy even on the floor of an apartment or the like. And it can be installed reliably.

  (5) According to a preferred embodiment, the connecting portion 3 is arranged on the lower stay 3d on the lower side of the center, and on both upper sides of the lower stay 3d, and only a predetermined height Ld from the axis H of the water meter M. If the left and right upper stays 3p and 3q arranged at the lower position are configured, the upper stays 3p and 3q are located below the axis H of the water meter M in addition to ensuring the overall rigidity and increasing the strength. Therefore, it is possible to easily attach and detach the water meter M from the obliquely upward and lateral directions and to perform an operation at the time of attaching and detaching (handle operation).

  (6) According to a preferred embodiment, if the lower water stay 3d is provided with the water meter reverse attachment preventing portion 19 that contacts the water meter M in the reverse direction and prevents the water meter M from being reversed, the amount of the water will be mistaken. It is possible to reliably avoid the problem that the water device M is mounted in the opposite direction.

  Next, the best embodiment according to the present invention will be given and described in detail with reference to the drawings.

  First, the structure of the connection device 1 of the water meter which concerns on this embodiment is demonstrated with reference to FIGS.

  The connecting device 1 includes a pair of connecting portions 2f and 2r facing each other and a connecting portion 3 that connects the connecting portions 2f and 2r. Each connection part 2f, 2r is comprised by the connection base part 4f, 4r couple | bonded with the connection part 3, and the connection mechanism part 5f, 5r supported by each support base part 4f, 4r, respectively. And the attachment end part which attaches the attachment / detachment end part 5fi, 5ri which attaches / detaches the water meter M to the inner end of each connection mechanism part 5f, 5r, and connects to the water pipe P (Pf, Pr) side at an outer end 5fo and 5ro are arranged, and water channels Rf and Rr are provided between the detachable end portion 5fi and the connection end portion 5fo, and between the detachable end portion 5ri and the connection end portion 5ro, respectively. In this case, one connection portion 2f is a primary side (upstream side), and the other connection portion 2r is a secondary side (downstream side).

  Hereinafter, details of each component will be described. The support bases 4f and 4r provided in the connection portions 2f and 2r can be cast using a general bronze alloy (bronze casting). This type of bronze alloy has excellent properties such as castability, wear resistance, corrosion resistance, pressure resistance (toughness), machinability, etc., and is usually called gunmetal and is about 90% copper and 10% tin. In addition, lead is contained in order to improve the workability and the yield. However, since the support bases 4f and 4r are not members directly constituting a water channel, a general bronze alloy (gun metal) having a cost merit can be used regardless of whether or not it contains lead. The support bases 4f and 4r have mounting holes 4fh and 4rh having a circular cross section formed in the horizontal direction, and anchor hook mounting parts 18f and 18r are fixed to the outer surfaces of the support bases 4f and 4r. . The anchor hook mounting portions 18f and 18r are formed by bending the plate material into an L shape, screwing the vertical portions to the outer surfaces of the support base portions 4f and 4r, and extending downwards. U-shaped notches 21f and 21r through which anchor hooks Af and Ar bolts fixed to the installation surface F are inserted are provided.

  On the other hand, as shown in FIG. 3, the connection mechanism portion 5 f provided in the primary side connection portion 2 f includes a primary side outer cylinder portion 11 provided with a connection end portion 5 fo at the outer end, and the primary side outer cylinder portion 11. And a primary side inner cylinder part 12 which is inserted in a telescopic manner and has an detachable end part 5fi at the inner end, and an operation part 13 for displacing the primary side inner cylinder part 12 in the extension / contraction direction. The primary-side outer cylinder portion 11 uses an elbow pipe 11s that can be fixed to the primary-side support base portion 4f by changing the protruding direction of the tip. In this case, the elbow pipe 11s is L-shaped, and has an end 5fo for connecting the water pipe side at one end, a flange part 22 at the other end, and an insertion cylinder protruding from the flange part 22. Part 23. As shown in FIG. 5, the flange portion 22 has four screw insertion holes 24 arranged at intervals of 90 ° in the circumferential direction, and the outer surface of the support base portion 4f located below the mounting hole 4fh 2 is provided. In addition, a ring groove 27 is provided on the outer peripheral surface of the insertion cylinder portion 23, and a ring groove 28 corresponding to the ring groove 27 is provided on the inner peripheral surface of the mounting hole 4fh in the support base portion 4f.

  When assembling the elbow pipe 11s into the support base 4f (mounting hole 4fh), the stopper ring 29 shown in FIG. 3 is accommodated in the ring groove 27, and the insertion cylinder part 23 of the elbow pipe 11s is inserted into the mounting hole 4fh. When the flange portion 22 is brought into contact with the outer surface of the support base portion 4f, the positions of the ring grooves 27 and 28 coincide with each other, and the stopper ring 29 straddles between the ring grooves 27 and 28, as shown in FIG. Intervene. As a result, the elbow pipe 11s is allowed to be pivotally displaced even though the insertion cylinder portion 25 is prevented from coming off. In this case, as shown in FIG. 5, one end (tip) of the elbow pipe 11s can be changed in three protruding directions, that is, upward, rightward, and leftward. Is screwed into the screw hole 25 through the selected screw insertion hole 24, the elbow pipe 11s can be fixed to the support base 4f. Therefore, by attaching and detaching the screw 26, the protruding direction (direction) of the tip of the elbow pipe 11s can be changed and attached.

  Furthermore, the primary side inner cylinder part 12 has the insertion cylinder part 30 penetrated to elbow pipe 11s, and provides the attachment / detachment end part 5fi in the front-end | tip exposed outside. In this case, sealing is performed by interposing an O-ring packing between the outer peripheral surface of the insertion tube portion 30 and the inner peripheral surface of the elbow pipe 11s, and packing is attached to the end surface of the detachable end portion 5fi. Sealing is performed when the connection port of the container M comes into contact (pressure contact). Further, a threaded portion 31 is provided on a portion of the outer peripheral surface of the insertion tube portion 30 that is not inserted into the elbow pipe 11s. On the other hand, the guide groove 32 along the axial direction is provided on the outer peripheral surface of the insertion tube portion 30, and the engagement pin 33 protruding from the inner peripheral surface of the mounting hole 4fh is screwed to the upper end of the support base portion 4f. The tip of the engagement pin 33 is engaged with the guide groove 32. Thereby, the insertion cylinder part 30 is allowed to be displaced in the axial direction but is restricted from rotating.

  By the way, the member which comprises the water channel Rf in the connection part 2f of the primary side is formed with a lead-free material. In this case, the members constituting the water channel Rf are the primary side outer cylinder part 11 and the primary side inner cylinder part 12. As the lead-free material, a lead-free bronze alloy disclosed in JP 2000-129375 A, JP 2000-336442 A, or the like can be used. This type of lead-free bronze alloy is a bronze alloy containing a substitute material for lead, and basically has the same level of properties as the above-mentioned general bronze alloy (bronze casting), that is, castability and corrosion resistance. It has excellent properties such as pressure resistance and machinability.

  On the other hand, the operation unit 13 has an operation tube portion 34 and an operation handle portion 35 provided at one end of the operation tube portion 34, and is provided on the outer peripheral surface of the insertion tube portion 30 on the inner peripheral surface of the operation tube portion 34. A screw hole portion 36 to be screwed into the screw portion 31 is provided. Further, a ring groove 37 is provided on the outer peripheral surface of the operation cylinder portion 34, and a ring groove 38 corresponding to the ring groove 37 is provided on the inner peripheral surface of the mounting hole 4fh in the support base portion 4f.

  When assembling the operation cylinder 34 to the support base 4f (attachment hole 4fh), if the operation cylinder 34 is inserted into the attachment hole 4fh with the stopper ring 29 shown in FIG. As shown, the positions of the ring grooves 37 and 38 coincide with each other, and the stopper ring 29 is interposed between the ring grooves 37 and 38. Thereby, although the rotation displacement of the operation cylinder part 34 is accept | permitted, omission is prevented. Therefore, as shown in FIG. 6, by rotating the operation handle portion 35, the primary inner cylinder portion 12 that is prevented from rotating can be moved forward or backward in the axial direction by the stroke Ls.

  On the other hand, as shown in FIG. 3, the connection mechanism portion 5r provided in the secondary-side connection portion 2r is provided with a connection end portion 5ro at the outer end and can accommodate the check valve portion 15 inside from the inner end opening 16i. The secondary side outer cylinder part 16 and the inner end opening 16i of the secondary side outer cylinder part 16 are attached and detached, and the check valve part 15 accommodated in the secondary side outer cylinder part 16 at the time of mounting is fixed, The secondary side inner cylinder part 17 which provided the attachment-and-detachment edge part 5ri in the inner end is provided. In this case, when the secondary outer cylinder portion 16 is assembled to the support base 4r (attachment hole 4rf), the flange portion 41 provided on the inner end opening 16i side is inserted into the attachment hole 4rf, and the screw 42 is attached. Used to fix to the outer surface of the support base 4r. Moreover, the secondary side inner cylinder part 17 consists of the cylinder part main body 43 and the fixing ring 44, and while providing the attachment / detachment end part 5ri at one end of the cylinder part main body 43, the valve seat 43s (FIG. 7) is provided at the other end. Further, the check valve portion 15 contacts the valve support portion 45, the valve body portion 46 supported by the valve support portion 45 so as to be axially displaceable, and the valve body portion 46 against the valve seat 43s. A spring 47 biased in the direction is provided, and the whole is configured as a unit.

  Therefore, when assembling the check valve portion 15, as shown in FIG. 7, the unit configured check valve portion 15 is fitted to the valve seat 43s side of the cylindrical portion main body 43, and in this state, the inner end It accommodates in the inside of the secondary side outer cylinder part 16 from the opening 16i. Then, if the screw portion provided on the outer peripheral surface of the fixing ring 44 is screwed into the screw hole portion provided on the inner peripheral surface of the secondary side outer cylinder portion 16, the secondary side with the check valve portion 15 incorporated therein The outer cylinder part 16 and the secondary side inner cylinder part 17 can be integrated. In addition, since the check valve portion 15 is pressed against the urging force of the spring 47 (right direction in FIG. 1), the valve body portion 46 is pressed against the urging force of the spring 47 because the water pressure causes the valve body portion 46 to be pressed. When the valve body portion 46 is separated from the valve seat 43s, the water channel Rr is opened. On the other hand, when water flow is stopped due to water breakage or the like, the water pressure from the upstream side disappears, so the valve body 46 is displaced to the valve seat 43s side by the urging force of the spring 47 and abuts the valve seat 43s ( The pressure water is prevented from returning from the downstream water pipe Pr (see FIG. 9).

  As described above, the check valve portion 15 can be easily assembled, and the check valve portion 15 can be easily replaced and maintained by attaching and detaching the fixing ring 44. Sealing is performed between the cylinder main body 43 and the secondary outer cylinder 16 by interposing an O-ring packing, and packing is attached to the end face of the detachable end 5ri provided on the cylinder main body 43. Sealing is performed when the connection port of the water meter M comes into contact (pressure contact). Reference numeral 48 denotes a core for preventing the generation of red water in the pipe due to rust of the threaded portion of the water pipe Pr to be connected.

  By the way, the member which comprises the water path Rr in the connection part 2r of the secondary side is formed with a lead-free material. In this case, the members constituting the water channel Rr are the secondary side outer cylinder part 16 and the secondary side inner cylinder part 17 (cylinder part main body 43). As the lead-free material, a lead-free bronze alloy similar to the primary-side outer cylinder portion 11 and the primary-side inner cylinder portion 12 provided in the above-described primary-side connection portion 2f can be used. The water channel Rr in the secondary-side connecting portion 2r includes a check valve portion 15 and a core 48, which are basically made of a material that does not contain lead. Specifically, the support portion 45 and the valve portion 46 in the check valve portion 15 are formed using a plastic material, and the spring 47 is formed of a stainless material. The core 48 is formed of a plastic material and a synthetic rubber material.

  Thus, in this embodiment, the members constituting the water channels Rf and Rr, that is, the primary side outer cylinder part 11 and the primary side inner cylinder part 12, and further the secondary side outer cylinder part 16 and the secondary side inner cylinder part. 17 (cylinder part main body 43) is made of lead-free material, so there is no fear that lead will be mixed into tap water (drinking water), and the safety of tap water can be further improved. Since it is used only in necessary places, the overall cost can be reduced.

  On the other hand, the connecting part 3 is arranged on the lower stay 3d arranged on the lower side of the center, on both sides above the lower stay 3d, and on the left and right arranged below the axis H of the water meter M by a predetermined height Ld. A pair of upper stays 3p and 3q are provided. Each of the stays 3d, 3p, and 3q is screwed at one end to one support base 4f, and the other end is inserted through the other support base 4f, and then fixed by nuts 51. Further, the lower stay 3d is provided with a water meter reverse attachment preventing portion 19 that contacts the water meter M in the reverse direction and prevents the water meter M from being reversed. As shown in FIG. 4, the water meter reverse attachment preventing portion 19 has an engaging portion 52 formed at the upper end by a U-groove. The water meter reverse attachment preventing portion 19 can be fixed to the lower stay 3d by the fixing screw 53 after being fitted to the outer peripheral surface of the lower stay 3d. Thereby, when the water meter M is mounted in a regular orientation, the rib-shaped protruding plate portion Mr provided at the bottom of the water meter M is accommodated in the engaging portion 52 as shown in FIG. Therefore, normal mounting is allowed. However, as shown in FIG. 8, when the water meter M is to be mounted in the reverse direction, the bottom of the water meter M abuts on the upper end of the water meter reverse attachment preventing portion 19 and moves downward. The reverse of the water meter M is prevented by restricting the displacement.

  Next, the installation method and function of the connection device 1 according to the present embodiment will be described with reference to FIGS.

  First, the case where the connection apparatus 1 is installed will be described. FIG. 9 shows an installation space S such as a pipe space provided on the floor of an apartment or the like. When installing the connection device 1, a pair of spaced anchor hooks Af, Ar are installed on the installation surface F of the installation space S. Since the anchor hooks Af and Ar are formed with bolts at the top, the upper and lower two fixing nuts 61... 62 are respectively screwed together, and the notches 21 f and 21 r are engaged by the fixing nuts 61. The anchor hook attaching portions 18f and 18r thus made are sandwiched and fixed. At this time, the height of the connection device 1 can be set (adjusted) by the positions of the fixing nuts 61... Thus, in this embodiment, since the anchor hook attaching portions 18f and 18r are provided, it can be easily and surely installed even on the floor of an apartment or the like.

  Then, one end of the stop cock Mc is connected to the primary connection end 5fo in the connection device 1, and the other end of the stop cock Mc is connected to the upstream water pipe Pf branched from the water main pipe Pm. To do. In this case, since the elbow pipe 11s that can be mounted by changing the protruding direction of the tip is provided, the elbow pipe 11s even in a limited installation space S such as a pipe space in which gas pipes and electric wires are also arranged. Can be easily installed by changing the protruding direction, and the water meter M can be easily replaced and maintained. Further, the secondary connection end 5ro is connected to the downstream water pipe Pr.

  Next, a method for attaching and detaching the water meter M will be described. The water meter M can be connected (detached) between the primary attachment / detachment end 5fi and the secondary attachment / detachment end 5ri in the connection device 1. First, when connecting the water meter M, the operation handle portion 35 is turned to one side and operated, and the primary side inner cylinder portion 12 is moved backward. In this case, since the primary side inner cylinder portion 12 is restricted in displacement in the rotational direction, the primary side inner cylinder portion 12 is displaced backward in a direction away from the detachable end portion 5ri (shortening direction). This state is shown in FIG. Thereby, since the space | interval between the attachment / detachment edge part 5fi on the primary side and the attachment / detachment edge part 5ri on the secondary side becomes wide, the prepared water meter M is accommodated between the upper stays 3p and 3q, and the connection ports on both ends are connected. The detachable end portion 5fi and the detachable end portion 5ri are opposed to each other. Next, the operation handle portion 35 is turned to the other side and operated, and the primary side inner cylinder portion 12 is moved forward in the extending direction. This state is shown in FIG. Thereby, the connection port in the both ends of the water meter M is pinched | interposed between the attachment / detachment edge part 5fi and the attachment / detachment edge part 5ri, respectively, and attachment of the water meter M is complete | finished. When the water meter M is attached or detached, the stop cock Mc is switched to the closed side. On the other hand, removal of the water meter M can also be easily removed by performing an operation opposite to the operation at the time of mounting.

  As described above, in the present embodiment, the connecting portion 3 is arranged on the lower stay 3d arranged on the lower side of the center, and on both upper sides of the lower stay 3d, and has a predetermined height Ld from the axis H of the water meter M. The upper stays 3p and 3q are lower than the axis H of the water meter M, in addition to ensuring the overall rigidity and increasing the strength. Therefore, it is possible to easily attach and detach the water meter M from the obliquely upward and lateral directions, and to perform an operation (handle operation) during the attachment and detachment. At this time, the lower stay 3d is provided with the water meter reverse attachment preventing portion 19 that contacts the water meter M in the reverse direction and prevents the water meter M from being reversed. It is possible to surely avoid the problem of mounting on the opposite side.

  Although the best embodiment has been described in detail above, the present invention is not limited to such an embodiment, and departs from the gist of the present invention in the detailed configuration, shape, material, quantity, numerical value, and the like. It can be changed, added, or deleted as long as it is not. For example, although the primary side outer cylinder part 11 showed the case where the elbow pipe 11s which can be attached by changing the protrusion direction of a front-end | tip was used, a simple cylindrical connection pipe may be sufficient. Moreover, although the case where the projection direction of the elbow pipe 11s is changed in units of 90 ° has been shown, it can be changed to an arbitrary angle. Furthermore, although the case where the separate anchor hook attachment portions 18f and 18r are attached to the support base portions 4f and 4r is shown, the anchor hook attachment portions 18f and 18r and the support base portions 4f and 4r may be integrally formed. On the other hand, although the connection part 3 showed the case where the three stays 3d, 3p, and 3q were used, the number and attachment position are arbitrary.

Sectional side view of the connection device according to the best embodiment of the present invention, A cross-sectional side view of the connection device with the connection mechanism portion removed, Cross-sectional side view clearly showing only the connection mechanism part of the connection device, A perspective view of the connection device, Front view of the connection device, A cross-sectional side view showing a state in which the primary side inner cylinder portion of the connection device is displaced backward, Sectional side view showing a state in which the secondary side connection part in the connection device is disassembled, Functional explanatory diagram of the water meter reverse installation prevention unit in the connection device, Installation method explanatory diagram of the connection device,

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection apparatus 2f ... Connection part 3 Connection part 3d Lower stay 3p ... Upper stay 4f ... Support base part 4fh ... Mounting hole 5f ... Connection mechanism part 5fi ... Detachable end part 5fo ... Connection end part 11 Primary side outer cylinder part (constitutes water channel) To do)
11s elbow pipe 12 primary side inner cylinder part (member constituting water channel)
13 Operation part 15 Check valve part 16 Secondary side outer cylinder part (member which comprises waterway)
16i Inner end opening 17 Secondary side inner cylinder part (member constituting water channel)
18f ... Anchor hook attachment part 19 Metered water device reverse prevention part P Water pipe M Metered water device Rf ... Water channel F Installation surface Af ... Anchor hook H Meter water meter axis Ld Predetermined height

Claims (5)

  A device for connecting a water meter comprising a pair of connecting portions connected in the middle of a water pipe and a connecting portion for connecting the connecting portions, wherein a water meter is configured to be detachable between the pair of connecting portions. The pair of connection portions are constituted by a support base portion coupled to the coupling portion, a primary side connection mechanism portion supported by an attachment hole formed through the support base portion, and a secondary side connection mechanism portion. The connection mechanism portion on the side has a primary outer cylinder portion having a connection end portion connected to the water pipe at the outer end, and is inserted into the primary end outer cylinder portion so as to be expandable and contractible. A primary side inner cylinder part having a detachable end part for attaching and detaching the vessel, and an operation part for displacing the primary side inner cylinder part in the expansion and contraction direction, and the connection mechanism part on the secondary side is connected to the water pipe side at the outer end Secondary side outer cylinder that has a connecting end connected to the inner end and can accommodate a check valve portion inside from the inner end opening And a secondary-side inner cylinder portion having a detachable end portion that attaches / detaches to / from the inner end opening of the secondary-side outer cylinder portion and attaches / detaches the water meter to the inner end, and further, the detachable end portion and the connection The primary side outer cylinder part, the primary side inner cylinder part, the secondary side outer cylinder part, and the secondary side inner cylinder part constituting the water channel between the end parts are formed of a lead-free material. Water device connection device.   The apparatus for connecting a metering device according to claim 1, wherein the primary outer cylinder part is an elbow pipe that can be attached by changing the protruding direction of the tip.   The apparatus for connecting a metering device according to claim 1, wherein the support base is provided with an anchor hook attachment portion attached to an anchor hook provided on an installation surface.   The connecting portion includes a lower stay arranged at the center lower side, and a pair of left and right upper stays arranged on both upper sides of the lower stay and arranged at a position lower than the axis of the water meter by a predetermined height. The connecting device for a water meter according to claim 1.   The apparatus for connecting a metering device according to claim 4, wherein the lower stay includes a metering device reverse-preventing portion that abuts the metering device in the reverse direction and prevents the metering device from being reversed. .

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