JP4878246B2 - Water meter - Google Patents

Description

  The present invention relates to a water meter.

Conventionally, a water meter that displays an accumulated usage amount of tap water has been used. Based on the accumulated usage displayed on the water meter, a water bill is charged.
JP 2002-310741 A

  A water meter can only be used if it has passed a verification test stipulated by the Measurement Law. For water meters that have passed this certification test, the certification stamp is indicated along with the expiration date.

  An example of the notation method of the test indicia is shown in FIG. As shown in the figure, a conventional water meter has a transparent ball-like member called a sealing ball 103 connected to a connecting portion between a water pipe 101 and a main body case 105 using a metal wire 104. The seal and the expiration date are enclosed in the seal ball 103.

  In some cases, a certification stamp and an expiration date are written on a ring (not shown) that supports the lid 106, or a seal with a certification stamp or the like is affixed to the back surface of the lid 106.

  In general, water meters are installed underground. Therefore, when the sealing ball 103 is attached at the position shown in FIG. 10, there is a problem that it is difficult to confirm from above. Further, the sealing ball 103 may be buried in the soil, and may be dirty and difficult to see.

  When the test indicia and the expiration date are written on the ring that supports the lid 106, the space for the ring is narrow, so that there is a problem that the display becomes small and difficult to see. In addition, when a seal is pasted on the back surface of the lid 106, it cannot be seen unless the lid 106 is opened. Therefore, there has been a demand for a water meter that can display the verification seal and the expiration date in a large and easy-to-see position.

  Also, it is required that the certification seal and the expiration date cannot be easily written. As shown in FIG. 10, a conventional water meter has a structure that cannot be easily removed by attaching a sealing ball 103 with a metal wire 104. Therefore, when it is written in a place where it is easy to see the test indicia and the expiration date, it is required that the notation be made as difficult to remove as the sealed ball 103.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a water meter that can display the certification seal and the expiration date in a large and easy-to-see position and that makes it difficult to display the mark.

Means for Solving the Problems and Effects of the Invention

In order to solve the above-mentioned problem, the present invention is a water meter that is arranged on a tap water supply path and displays the accumulated usage amount of tap water,
A body case with an open top;
A measuring unit that is stored inside the main body case and measures the amount of tap water used,
An integrated display unit that is disposed at a position that is visible from the upper opening of the main body case, and displays the accumulated usage of tap water;
A lid portion that is attached to be openable and closable between a closed position that conceals the integrated display portion and an open position where the integrated display portion is visible, with respect to the edge portion that forms the upper opening of the main body case,
One main surface is formed in the shape of a plate or sheet that has a test mark indicating that the weighing unit and the integration display unit have passed a predetermined test, together with the expiration date, and the upper surface of the lid And a test indicia notation member in which the notation member side regulating surface is formed as its own thickness direction exposed surface, and is fixedly arranged in a predetermined test indicia placement region of
The lid part side regulating surface is formed along the thickness direction of the lid part with respect to the lid part, and the lid part side regulating surface is brought into contact with the notifying member side regulating surface so that the test seal marking member is in the in-plane direction The in-plane positioning part of the test indicia notation member that mechanically regulates the positioning in the test indicia placement region at
It is characterized by having.

  According to the above invention, the lid portion is provided in the upper opening of the main body case so as to be freely opened and closed, and the test mark arrangement region is formed at a predetermined position on the upper surface of the lid portion. A plate-shaped or sheet-shaped test mark marking member on which a test mark and a notation surface for indicating the expiration date are formed is fixedly arranged in this test mark marking area. In this way, since the verification stamp and the expiration date are displayed on the upper surface of the lid, the display is less likely to be buried in the soil, and it can be easily confirmed from the outside without opening the lid. Furthermore, since the certification seal and the expiration date can be displayed large, it is easy to see.

  In addition, an in-plane positioning portion for a test mark marking member is formed on the lid. A lid-side regulating surface is formed along the thickness direction of the lid by the in-plane positioning portion of the test mark marking member. When the lid-side regulating surface is in contact with the marking member-side regulating surface, the certification stamp marking member is mechanically regulated to the certification marking arrangement region in the in-plane direction. As a result, the test mark notation member can be firmly fixed to the lid.

  The present invention has a bottomed or penetrating recess for accommodating a test stamp marking member at a position corresponding to the test stamp layout area of the lid, and the inner peripheral surface of the recess is a lid-side regulating surface, The inner peripheral surface forming portion of the concave portion of the lid portion may be formed with the test mark marking member in-plane positioning portion in a form in which the outer peripheral surface of the member is the notifying member side regulating surface. If it does in this way, an inspection indicia and an expiration date can be easily indicated only by accommodating an inspection indicia notation member in a crevice formed in a lid.

  In this case, the test mark marking member can be press-fitted and fixed in the recess. In addition, the test indicia notation member may be bonded to the inner peripheral surface of the recess at least on the outer peripheral surface. If it does in this way, detachment | leave from the cover part of a test | inspection-mark-inscription member can be prevented.

  In addition, the inner peripheral surface of the recess is formed in a stepped shape or a tapered shape so that the in-plane cross-sectional area is reduced toward the lower surface of the lid portion in the depth direction. It may be formed in a stepped shape or a tapered shape corresponding to the surface. According to this configuration, when the test mark notation member is inserted from the upper surface of the lid portion, alignment in the thickness direction can be easily performed.

  Furthermore, the concave portion is formed in a shape penetrating the lid portion, and the inner peripheral surface of the concave portion and the outer peripheral surface of the test seal mark notation member may be formed in a staircase shape bonded to each other in a fitting form. it can. According to this configuration, when the test mark notation member is inserted from the upper surface of the lid portion, it is possible to prevent the drop to the lower surface side. Moreover, since it adhere | attaches, a test | inspection mark notation member does not come out upwards.

  Further, the water meter of the present invention has a positioning projection that protrudes from the upper surface of the lid portion that forms a region in the calibration mark arrangement region of the lid portion, and on the other hand, a positioning hole that penetrates the certification mark notation member in the thickness direction is formed. The positioning protrusion is inserted into the positioning hole so that the outer peripheral surface of the positioning protrusion is the lid-side regulating surface, and the inner peripheral surface of the positioning hole is the marking member-side regulating surface. An in-plane positioning portion for the test mark notation member may be formed. If it does in this way, the positioning protrusion part inserted in the positioning hole can perform the positioning in the in-plane direction of the verification mark marking member in the verification mark arrangement region.

  Furthermore, the water meter of the present invention is such that when the test mark marking member is positioned on the lid while the positioning protrusion is inserted into the positioning hole, the positioning projecting portion protrudes from the upper surface side of the test mark marking member. Further, the height of the protrusion is determined, and a heat crimping portion having a diameter larger than that of the positioning hole is formed at the tip of the positioning protrusion. According to this configuration, the test mark marking member can be positioned by the positioning protrusion, and the heat stamping portion can prevent the test mark marking member from being detached from the upper surface side.

  Furthermore, the water meter of the present invention can be such that a recess is formed in a bottomed shape on the top surface of the lid and a positioning protrusion is formed on the bottom surface of the recess. According to this configuration, when the test mark notation member is fitted from the upper surface, the bottom portion prevents the bottom of the test mark notation from falling off, and the positioning projecting portion can position the test mark notation member in the in-plane direction. .

In addition, a positioning protrusion that protrudes from the upper surface of the lid portion that forms an area is formed at the periphery of the test mark arrangement area of the cover portion, and on the other hand, a notation member side regulating surface is formed on the outer peripheral surface of the inspection mark notation member, and the positioning protrusion Can be formed with the in-plane positioning portion of the test indicia notation member in such a manner that its inner side surface is the lid-side regulating surface. If it does in this way, a positioning protrusion part will come to be located in the outer-periphery edge part of a test | inspection mark description member. Thereby, it is possible to prevent the certification indicia and the notation of the expiration date from being obscured by the tip of the positioning protrusion.

  More specifically, a plurality of positioning protrusions are formed at predetermined intervals in the circumferential direction of the test mark arrangement region, and on the other hand, a guide groove for inserting each positioning protrusion is thick on the outer peripheral surface of the test mark marking member. It may be formed in a cutout shape in the direction. By forming a plurality of positioning protrusions in the circumferential direction, it is possible to reliably position and fix the test mark marking member.

  In this case, an engagement claw that engages with the outer peripheral edge of the upper surface of the test mark marking member can be formed at the upper end of the positioning protrusion. If it does in this way, even if it does not perform a heat caulking process, it becomes possible to fix a test-mark-marking member.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an external view of a water meter 1 according to the present invention, and FIG. 2 is a cross-sectional view. As shown in the figure, the water meter 1 is visually recognized from a main body case 3 having an upper opening, a measuring unit 35 that is stored in the main body case 3 and measures the amount of tap water used, and an upper opening 50 of the main body case 3. The integrated display part 40 (refer FIG. 3) which is arrange | positioned in the position which can be displayed and displays the accumulated usage-amount of tap water is provided. Further, a lid part that is attached to the edge forming the upper opening 50 of the main body case 3 so as to be openable and closable between a closed position that conceals the integrated display part 40 and an open position where the integrated display part 40 is visible. 2 is provided.

  The main body case 3 includes an upper case 33 and a lower case 10. The lower case 10 is provided with an inflow side nozzle 11a and an outflow side nozzle 11b, and a strainer 12 for removing foreign matter is attached to the inflow side nozzle 11a. In addition, a horizontal installation support 13 protruding in a cross shape is formed at the bottom of the lower case 10, and an impeller 18 is rotatably provided in the internal measurement chamber A.

  A magnet 17 is attached to the upper end of the shaft portion of the impeller 18. A register box 20 is assembled inside the lower case 10 with a lower gasket 19 interposed therebetween.

  The register box 20 is provided with an upper base plate 24, a magnet gear 26, a gear train 27, a pointer 28, and a numeral wheel 29, and a glass plate 30 is provided above the register box 20 with an O-ring 31 interposed therebetween. The magnet gear 26 is disposed at a position facing the magnet 17 of the impeller 18 across the bottom wall of the register box 20.

  An upper case 33 is attached to the upper portion of the register box 20 with an upper gasket 32 interposed therebetween, and is screwed to the lower case 10. The lid 2 described above is attached to the upper case 33 by a pin 34 so as to be freely opened and closed.

  The tap water flows into the measuring chamber A from the inflow side nozzle 11a, rotates the impeller 18 according to the amount of water, and then flows out from the outflow side nozzle 11b. The magnet gear 26 is rotated by the rotation of the impeller 18, the rotational force is transmitted to the gear train 27, and the pointer 28 is rotated. In addition, the number wheel 29 rotates to display the accumulated usage amount of tap water. By such a mechanism, the measuring unit 35 and the integration display unit 40 of the present invention are configured.

  In FIG. 3, the top view of the state which opened the cover part 2 is shown. As shown in the figure, the integrated display portion 40, the pointer 28, the manufacturer mark 43, the caliber / maximum flow rate 42, the model approval number 41, and the water flow direction 44 formed on the upper base plate 24 are passed through the glass plate 30 from the upper opening 50. It can be visually recognized.

  Next, a top view and a cross-sectional view of the lid 2 are shown in FIG. On the upper surface of the lid portion 2, a marking portion 48 such as a manufacturing number, a manufacturer name 45, a manufacturer mark or a city mark 46 is displayed. In addition, a concave portion D (see a cross-sectional view) is formed in the lid portion 2, and a test mark marking member 4 in which the test stamp is written together with an expiration date is fitted and fixed in the concave portion D. The test indicia marking member 4 is fixed to the lid portion 2 by adhesion or welding.

  More specifically, in the test indicia marking member 4, one main surface is a notation surface S on which the test indicia that certifies that the measuring unit 35 and the integration display unit 40 have passed a predetermined test is displayed together with an expiration date. It is formed in a plate shape or a sheet shape, and is fixedly arranged in a predetermined test mark arrangement area A of the lid portion 2.

  FIG. 5 shows an enlarged view of the main part. FIG. 6 shows a modification thereof. As shown in FIGS. 5 and 6, the notation member regulating surface S <b> 1 is formed on the notation member 4 as its own thickness direction exposed surface. In addition, by forming a lid-side regulating surface S2 along the thickness direction of the lid 2 with respect to the lid 2, the lid-side regulating surface S2 is brought into contact with the notation member-side regulating surface S1. In addition, an in-plane positioning portion 5 is formed for mechanically restricting the positioning of the test mark notation member 4 in the in-plane direction in the test mark arrangement area A.

  With the above configuration, since the verification stamp and the expiration date are displayed on the upper surface of the lid portion 2, it is difficult to embed the display in the soil, and the verification stamp and the expiration date can be set from the outside without opening the lid portion 2. It can be easily confirmed. Furthermore, since the certification seal and the expiration date can be displayed large, it is easy to see. In addition, since the verification mark notation member 4 is positioned and fixed by abutment between the lid part side regulation surface S2 and the notation member side regulation surface S1, it is possible to firmly fix the certification mark notation member 4 to the lid part 2. it can.

  In addition, it is also possible to change the color of the test mark notation member 4. That is, depending on the user (waterworks department), the year 2 such as the expiration date is changed by changing the color of the lid 2, but the color of the lid 2 is the same by changing the color of the test mark notation member 4. However, it is possible to sort the fiscal year. Thereby, the cover part 2 can be shared.

  This will be described in more detail with reference to FIGS. As shown in the drawing, a recessed portion D having a bottom (FIG. 6) or a penetrating form (FIG. 5) for accommodating the verification mark notation member 4 is formed at a position corresponding to the verification mark arrangement region A of the lid portion 2. The inner peripheral surface is defined as a lid-side regulating surface S2, and the outer circumferential surface of the test-mark-indicating member 4 is defined as a marking-member-side regulating surface S1. An inner positioning portion 5 is formed.

  In the embodiment of FIG. 5, the inner peripheral surface of the recess D is formed in a staircase shape such that the in-plane cross-sectional area decreases toward the lower surface side of the lid portion 2 in the depth direction. And the outer peripheral surface of the test-mark inscription member 4 is formed in the step shape corresponding to the inner peripheral surface of the recessed part D. As shown in FIG. If it does in this way, when the test-mark-inscription member 4 is inserted from the upper surface of a cover part, position alignment of a thickness direction can be performed easily. That is, the height positions of the marking surface S of the test mark marking member 4 and the upper surface S ′ of the lid 2 can be easily matched. In addition to the staircase shape as shown in FIG. 5, a taper shape is also possible.

  In the embodiment of FIG. 5, the inner peripheral surface of the recess D and the outer peripheral surface of the test certificate notation member 4 are formed in a stepped shape bonded to each other in a fitting form. According to this configuration, when the test seal marking member 4 is inserted from the upper surface side of the lid portion 2, it can be prevented from falling off to the lower surface side, and the test seal seal marking member 4 and the lid portion 2 are bonded. The marking member 4 does not come out upward.

  Next, another embodiment is shown in FIG. In this embodiment, a positioning projection 7 that projects from the lid upper surface 5a (bottom surface of the recess D) forming an area in the test mark arrangement region A of the lid 2 is formed. On the other hand, as shown in the top views of FIGS. 7 and 8, a positioning hole 6 penetrating in the thickness direction is formed in the test mark marking member 4. By inserting the positioning projection 7 into the positioning hole 6, the outer peripheral surface of the positioning projection 7 is used as a lid-side regulating surface S2, and the inner circumferential surface of the positioning hole 6 is used as a notation member-side regulating surface S1. The positioning protrusion 7 forms an in-plane positioning portion for the test mark notation member. In this way, the positioning protrusion 7 inserted into the positioning hole 6 can position the test mark marking member 4 in the in-plane direction in the test mark placement region.

  Further, as shown in FIGS. 7A and 7B, when the test mark notation member 4 is positioned in the recess D while the positioning protrusion 7 is inserted into the positioning hole 6, the positioning protrusion 7 The protruding height is determined such that the portion protrudes toward the upper surface side of the test mark marking member 4. And the heat crimping part 8 which becomes larger diameter than the positioning hole 6 is formed by carrying out the heat crimping of the front-end | tip part of the positioning protrusion part 7. As shown in FIG. According to this configuration, the test mark marking member 4 can be positioned by the positioning protrusion 7 and the heat crimping portion 8 can prevent the test mark marking member 4 from being detached from the upper surface side.

Next, another embodiment of the present invention is shown in FIG. In this embodiment, a positioning protrusion 7 that protrudes from the lid upper surface 5a (the bottom surface of the recess D) that forms the area is formed on the periphery of the test mark arrangement area of the lid 2. On the other hand, on the outer peripheral surface 80 of the certification seal notation member 4, a notation member side regulation surface S1 is formed. The positioning protrusion 7 forms an in-plane positioning portion for the test mark notation member in such a manner that the inner side surface of the positioning protrusion 7 is the lid-side regulating surface S2. If it does in this way, the positioning protrusion part 7 comes to be located in the outer-periphery edge part of the test | inspection mark description member 4. FIG. Thereby, it can prevent that the notation of a test | inspection mark and an expiration date becomes difficult to see by the front-end | tip of the positioning protrusion part 7. FIG.

  More specifically, in the embodiment of FIG. 9, a plurality of positioning protrusions 7 are formed at predetermined intervals in the circumferential direction of the test mark arrangement region. In addition, a guide groove 9 for inserting each positioning protrusion 7 is formed in a cutout shape in the thickness direction on the outer peripheral surface 80 of the test mark marking member 4. An inner peripheral surface of the guide groove 9 is a lid side regulation surface S1. In this way, by forming a plurality of positioning protrusions 7 in the circumferential direction, it is possible to reliably position and fix the test mark marking member 4.

  Further, as shown in the enlarged view of the main part of FIG. 9B, an engaging claw 70 is formed at the upper end of the positioning projection 7 to engage with the outer peripheral edge of the upper surface of the test mark marking member 4. The engaging claw 70 is made of an elastically deformable material. While the engaging claw 70 is elastically deformed, the test mark marking member 4 is inserted into the recess D. When the insertion is completed, the engaging claw 70 is elastically restored to the state shown in FIG. By this engaging claw 70, the test mark marking member 4 is fixed, and the upward detachment is prevented.

The external view of the water meter which concerns on this invention. Sectional drawing of a water meter. The figure which looked at the inside from the upper part opening of a main part case. The top view and sectional drawing of a cover part. The principal part enlarged view of FIG. The modification of FIG. The example which formed the positioning protrusion part and fixed the test-mark-marking member by heat caulking. The upper side figure of the test | inspection seal mark description member in which the positioning hole was formed. Another embodiment. Conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water meter 2 Lid part 3 Main body case 4 Test certificate notation member 5 Test certificate mark notation member surface positioning part 5a Bottom surface (of recessed part D) 6 Positioning hole 7 Positioning protrusion 8 Heat-clamping part 9 Guide groove 70 Engagement claw D Recessed part S1 Notation member side regulating surface S2 Lid side regulating surface

Claims (11)

A water meter that is arranged on the tap water supply path and displays the accumulated usage of the tap water,
A body case with an open top;
A measuring unit that is stored inside the main body case and measures the amount of tap water used,
An integrated display unit that is disposed at a position that is visible from the upper opening of the main body case, and displays the accumulated usage of the tap water,
A lid portion attached to the edge forming the upper opening of the main body case so as to be openable and closable between a closed position for concealing the integrated display portion and an open position where the integrated display portion is visible;
One main surface is formed in a plate-like or sheet-like shape having a notation surface for indicating the certification indicia that proves that the weighing unit and the integration display unit have passed a predetermined certification test together with an expiration date, and the lid A test mark notation member which is fixedly arranged in a predetermined test mark placement region on the upper surface of the part and whose notation member side regulation surface is formed as its own thickness direction exposed surface;
Forming the lid-side regulating surface along the thickness direction of the lid with respect to the lid, and bringing the lid-side regulating surface into contact with the marking member-side regulating surface, A test mark notation member in-plane positioning part that mechanically regulates the positioning of the member in the in-plane direction within the test mark placement region; and
A water meter characterized by comprising:   A concave portion having a bottom or a penetrating shape is formed in the lid portion in a position corresponding to the certification indicia arrangement region of the lid portion, and an inner peripheral surface of the concave portion is the lid portion side regulating surface, 2. The test mark marking member in-plane positioning portion is formed by an inner peripheral surface forming portion of the concave portion of the lid portion, wherein the outer circumferential surface of the indicia marking member is the marking member-side regulating surface. Water meter.   The water meter according to claim 2, wherein the test mark notation member is press-fitted and fixed in the recess.   The water meter according to claim 2, wherein the test mark marking member is bonded to the inner peripheral surface of the recess at least on the outer peripheral surface.   The inner peripheral surface of the concave portion is formed in a stepped shape or a tapered shape so that the in-plane cross-sectional area is reduced toward the lower surface of the lid portion in the depth direction. The water meter according to any one of claims 2 to 4, wherein the water meter is formed in a stepped shape or a tapered shape corresponding to the peripheral surface.   A positioning projection that protrudes from the upper surface of the lid portion that forms the area is formed in the area where the test mark is placed in the lid, and a positioning hole that penetrates the test mark marking member in the thickness direction is formed, and the positioning By positioning the protruding portion into the positioning hole, the outer peripheral surface of the positioning protruding portion is used as the lid-side regulating surface, and the inner circumferential surface of the positioning hole is used as the marking member-side regulating surface. The water meter according to claim 1, wherein the projecting portion forms an in-plane positioning portion of the test mark marking member. When positioning the test mark notation member on the lid while inserting the positioning protrusion into the positioning hole, the positioning protrusion has a front end protruding to the upper surface side of the test mark notation member. The water meter according to claim 6 , wherein a protrusion height is determined, and a heat crimping portion having a diameter larger than that of the positioning hole is formed at a tip portion of the positioning protrusion. With concave portion is formed in a bottomed form before Kifuta upper surface, according to claim 7 water meter according to the positioning protrusion on the bottom surface of the concave portion is formed. A positioning protrusion that protrudes from the upper surface of the lid portion that forms the region is formed at the periphery of the inspection indicia placement region of the lid portion, while the notation member side regulating surface is formed on the outer peripheral surface of the inspection indicia notation member, 2. The water meter according to claim 1, wherein the positioning projecting portion is formed with an in-plane positioning portion of the test mark notation member in a form in which an inner side surface of the positioning projecting portion is the lid-side regulating surface. A plurality of the positioning protrusions are formed at predetermined intervals in the circumferential direction of the test mark arrangement region, and on the other hand, guide grooves for inserting the positioning protrusions are provided in the thickness direction on the outer peripheral surface of the test mark marking member. The water meter according to claim 9 , wherein the water meter is formed in a notch shape. The water meter according to claim 10 , wherein an engaging claw that engages with an outer peripheral edge portion of the upper surface of the test mark marking member is formed at an upper end of the positioning protrusion.

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