JP4845648B2 - 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

  On the lid of the water meter, the name, serial number, diameter, etc. of the manufacturer that manufactured the water meter are written. In addition, the seal (city mark) of the area where the water meter is used may be written.

  The lid of the water meter is manufactured by resin molding. The manufacturer name, serial number, and the like described above are formed in advance on the surface of the mold by unevenness, and by performing resin molding using this mold, a lid having the manufacturer name and the like described on the surface as uneven is manufactured.

  Therefore, when a city mark is written on the lid, it is necessary to prepare a dedicated mold for each city. It is also necessary to divide the lid color for each city. For these reasons, when trying to sell water meters across multiple cities, a dedicated lid must be prepared for each city, and there is a problem that the lid cannot be shared.

  The subject of this invention is providing the water meter which can use the cover in common even if the description matter of a cover changes for every area.

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;
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;
With respect to the edge that forms the upper opening of the main body case, a closed position that conceals the integrated display portion, and a lid portion that can be freely opened and closed between an open position where the integrated display portion is visible,
The lid portion has a transparent portion made of a transparent material that can be seen through from the front surface side to the rear surface side in the thickness direction, and includes a main body portion that can be freely opened and closed with respect to the edge of the upper opening, and a non-transparent member. It is formed in a plate shape or a sheet shape, and at least the front surface side is attached in a form in close contact with the back surface of the see-through portion of the main body portion, and includes a notation member that is a description item notation region in which predetermined description items are indicated, A description item notation region formed on the surface of the notation member is visible from the surface side of the see-through part of the main body.

  According to the water meter of the present invention, the lid portion includes a main body portion having a see-through portion made of a transparent material, and a notation member attached to the back surface of the main body portion. The surface of the notation member is a description item notation area in which predetermined description items (manufacturer name, manufacturer mark or city mark, aperture, city designation number, etc.) are described. The notation member is attached so that the notation area is closely attached to the back surface of the transparent portion. And the description item description area | region formed in the surface of the description member can be visually recognized from the surface side of the see-through | perspective part of a main-body part. According to this configuration, since it is not necessary to describe anything in the main body, the main body can be used in common over a plurality of regions. Moreover, since the description items on the surface of the notation member can be printed, a mold for resin molding is not required, and therefore, even if the description items change in each region, it is only necessary to change the printing contents. That is, the notation member can be used in common.

  In this case, a back side description item notation region can be formed on the back surface of the notation member separately from the description item notation region. Thereby, information that cannot be written on the front surface can be written on the back surface. In recent years, there has been a need for more information to be described in addition to the items described in the conventional water meter due to a request from an international standard (OIML). These pieces of information are often displayed near the integrated display section (dial), but there may be cases where sufficient space cannot be secured. However, as in the present invention, more information can be written by using the back surface of the writing member. Further, according to the present invention, even if another information needs to be newly described, it is only necessary to print additional information on the back surface of the notation member, and it is not necessary to change the mold for resin molding as in the prior art. .

  The notation member is formed so that the peripheral shape thereof is smaller than the peripheral shape of the main body portion, and the region between the peripheral portion of the fluoroscopic portion to which the notation member is attached and the peripheral portion of the main body portion is the back surface side from the lid portion surface side. It may be a light shielding region in which see-through in the thickness direction to the side is prevented. The size of the lid of the water meter varies depending on the diameter, and as the diameter increases from the smallest (13 mm) to 20 mm, 25 mm, and 40 mm, the lid gradually increases. The notation member with the smallest aperture (13 mm) can be used in common and used as a lid with a large aperture. However, if the periphery of the notation member is transparent, the balance becomes worse, or a sense of incongruity occurs when viewed. Sometimes. In this case, this problem can be avoided by making only the portion (the see-through portion) to which the notation member is attached transparent and making the region between the peripheral portion of the see-through portion and the peripheral portion of the main body portion opaque (light-shielding region). Can do. In addition, this shading area may be colored to be a user identification color (a color designated by a water bureau in each city) or a year identification color (a color for identifying a year in which a test is conducted).

  Specifically, the portion that forms the light shielding region in the main body portion may be formed of a light shielding material having a light transmittance smaller than that of the see-through portion in the thickness direction.

  Further, the main body portion may be made of a transparent material that forms a see-through portion as a whole, and a light-shielding body having a light transmittance smaller than that of the see-through portion may be attached to the back surface of the main body portion in the light-shielding region. When the water meter is recycled, it may be necessary to change the user identification color or the year identification color. However, according to the above configuration, the color can be easily changed by replacing the light shield.

  On the other hand, a notation member-side position restriction surface is formed along the thickness direction on the notation member, and a main body side position restriction surface is formed along the thickness direction of the main body portion on the back surface of the main body portion. When the part side position restricting surface comes into contact with the notifying member side position restricting surface, the notifying member can be positioned in the in-plane direction on the back surface of the main body part. If it does in this way, positioning of the notation member 5 in the in-plane direction can be performed easily.

  For example, a positioning protrusion that protrudes in the thickness direction from the back surface of the main body is formed, a positioning hole into which the positioning protrusion is inserted is formed in the notation member, and the outer peripheral surface of the positioning protrusion is positioned on the main body side. The inner peripheral surface of the positioning hole is a notation member side position restricting surface, and the notifying member is faced on the back surface of the main body portion by the contact between the main body portion side position restricting surface and the notation member side position restricting surface. It can be positioned in the inward direction. According to this configuration, the notation member can be easily positioned by inserting the positioning hole formed in the notation member into the positioning protrusion formed in the main body.

  Next, according to the present invention, when the positioning projection is inserted into the positioning hole, the projection length of the positioning projection is determined so that the tip of the positioning projection projects from the back surface of the marking member. The notched member can be fixed in such a manner that a heat swaged portion larger in diameter than the positioning hole is formed in the portion, and the seating surface of the heat swaged portion is in close contact with the back surface of the notable member. . If it does in this way, a description member can be firmly fixed to a main part, and a malfunction that a description member falls from the back of a main part will not arise easily.

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 at a rotation speed corresponding 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, and the accumulated usage amount of tap water is displayed on the accumulation display unit 40.

  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.

  A surface view and a cross-sectional view of the lid 2 are shown in FIG. As shown in the figure, the lid portion 2 has a see-through portion 4a made of a transparent material that can be seen through in the thickness direction from the front surface side to the back surface side, and is attached to the edge of the upper opening 50 so as to be freely opened and closed. 4 is provided. In the present embodiment, the entire main body 4 is made of a transparent material. Further, it is formed in a plate shape or a sheet shape made of a non-transparent member, and is attached in such a manner that at least the surface S1 side is in close contact with the back surface of the fluoroscopic portion 4a, and a predetermined description item (manufacturer name 45, manufacturer mark or city mark) 46, a description item notation region A1 provided on the surface of the notation member 5 from the surface side of the see-through portion 4a, including the notation member notation region A1 in which the manufacturing number marking space 48 and the diameter 47) are indicated. Is visible.

  According to this configuration, there is no need to describe anything in the main body 4. Therefore, the main body 4 can be used in common over a plurality of regions. In addition, since the description items on the surface of the notation member 5 can be printed, a mold for resin molding is not required, and therefore, even if the description items change for each region, it is only necessary to change the printing contents. That is, the notation member 5 can be used in common.

  Next, the back view of the cover part 2 is shown in FIG. As shown in the drawing, a back side description item notation area A2 is formed on the back surface of the notation member 5 separately from the description item notation region A1. Thereby, information that cannot be written on the front surface can be written on the back surface. Specifically, a display item 61 added at the request of an international standard (OIML), a serial number 62, and a seal 60 for certifying that the water meter 1 has passed a certification test stipulated by the Measurement Law, Is written in the back side description item notation area A2.

  In recent years, due to a request for an international standard (OIML), it has become necessary to describe more information in addition to the items described in conventional water meters. These pieces of information are often displayed near the integrated display section 40 (see FIG. 3), but there may be cases where sufficient space cannot be secured. However, by using the back surface of the notation member 5 as in the present invention, more information can be indicated, and the international standard additional display item 61 can be indicated as shown in FIG. Further, according to the present invention, even if another information needs to be newly described, it is only necessary to print additional information on the back surface of the notation member 5, and it is not necessary to change the mold for resin molding as in the past. Absent.

  Next, another embodiment of the present invention is shown in FIG. In this embodiment, the notation member 5 is formed so that the peripheral shape thereof is smaller than the peripheral shape of the main body portion 4, and the region between the peripheral portion of the see-through portion 4 a to which the notation member 5 is attached and the peripheral portion of the main body portion 4. Is a light shielding region 6 in which see-through in the thickness direction from the front surface side to the back surface side of the lid portion 2 is prevented. The size of the lid of the water meter varies depending on the diameter, and the radius of the lid gradually increases as the diameter increases from the smallest (13 mm) to 20 mm, 25 mm, and 40 mm. In this embodiment, the aperture is 20 mm, but the notation member 5 is for 13 mm. If it does in this way, it will become possible to use the description member 5 in common between water meters with different diameters. Although the light shielding region 6 is not formed here, it is possible to make it transparent in the same manner as the see-through portion 4a. However, since the back side can be seen through, the balance may be deteriorated or a strange feeling may occur when viewed. is there. However, as in this embodiment, only the portion (the see-through portion 4a) to which the notation member 5 is attached is made transparent, and the region between the peripheral portion of the see-through portion 4a and the peripheral portion of the main body portion 4 is opaque (the light-shielding region 6). By doing so, this problem can be avoided. In addition, the shading region 6 may be colored to be a user identification color (a color designated by a water bureau in each city) or a year identification color (a color for identifying a year in which a test is performed).

  Next, a cross-sectional view of the lid 2 shown in FIG. 6 is shown in FIG. As shown in the drawing, a portion forming the light shielding region 6 in the main body portion 4 is made of a light shielding material having a light transmittance smaller than that of the see-through portion 4a in the thickness direction. The main body 4 is made of, for example, a transparent synthetic resin. By coloring only the portion of the main body 4 that forms the light shielding region 6, a light shielding material can be obtained.

  Moreover, the cover part 2 can also be comprised like FIG. In this embodiment, the main body 4 is entirely made of a transparent material that forms the see-through portion 4 a, and a light-shielding body 60 having a light transmittance smaller than that of the see-through portion 4 a is attached to the back surface of the main-body portion 4 in the light-shielding region 6. ing. When the water meter 1 is recycled, it may be necessary to change the user identification color or the year identification color. However, according to the above configuration, the color can be easily changed by replacing the light shield 60.

  Next, a method of fixing the notation member 5 to the main body 4 will be described with reference to FIG. As shown in FIG. 9A, the notation member-side position restricting surface S <b> 3 is formed along the thickness direction on the notation member 5, and the back surface of the main body portion 4 is along the thickness direction of the main body portion 4. Thus, the main body portion side position restricting surface S4 is formed, and the main body portion side position restricting surface S4 contacts the notifying member side position restricting surface S3, thereby positioning the notifying member 5 on the back surface of the main body portion 4 in the in-plane direction. ing. If it does in this way, positioning of the notation member 5 in the in-plane direction can be performed easily.

  Specifically, the positioning protrusion 7 formed on the main body 4 is inserted into the positioning hole 8 formed on the notation member 5 and fixed with an adhesive or the like. More specifically, as shown in FIG. 9A and FIG. 9B, a positioning protrusion 7 that protrudes in the thickness direction from the back surface of the main body 4 is formed. The positioning hole 8 into which the portion 7 is inserted is formed, the outer peripheral surface of the positioning protrusion 7 is a main body side position restricting surface S4, and the inner peripheral surface of the positioning hole 8 is a notation member side position restricting surface S3. The notation member 5 is positioned in the in-plane direction on the back surface of the main body part 4 by the contact between the main body part side position restriction surface S4 and the notation member side position restriction surface S3. As a result, the notation member 5 can be easily positioned and fixed in the in-plane direction simply by inserting the positioning protrusion 7 into the positioning hole 8.

  More specifically, two positioning holes 8 are provided on a straight line 1 passing through the center point O of the notation member 5 at positions opposite to each other with respect to the center point O. The distance L1 from the positioning hole 8a formed on the pin 34 side to the outer peripheral edge of the marking member 5 is made smaller than the distance L2 from the positioning hole 8b formed on the opposite side to the outer peripheral edge of the marking member 5. Yes. Further, a distance L3 from the inner surface of the pin hole forming portion 34a protruding in the thickness direction from the back surface of the main body portion 4 to the positioning protruding portion 7a is shorter than L2. According to this configuration, when the lid member 2 is manufactured, even if the notation member 5 is mistakenly attached to the opposite side by 180 °, L2> L3 holds, so the outer peripheral edge of the notation member 5 is the pin holding portion. The positioning protrusions 7a and 7b do not enter the positioning holes 8a and 8b due to contact with the inner surface of 34a. Therefore, an error in the orientation of the notation member 5 can be prevented.

  On the other hand, the marking member 5 can be fixed as shown in the enlarged view of the main part of FIG. In this embodiment, when the positioning protrusion 7 is inserted into the positioning hole 8, the protrusion length of the positioning protrusion 7 is determined so that the tip end protrudes from the back surface S <b> 2 of the notation member 5. A heat crimping portion 9 having a diameter larger than that of the positioning hole 8 is formed at the distal end portion of the positioning protrusion 7, and the seating surface S 5 of the heat crimping portion 9 is in close contact with the back surface S 2 of the notation member 5. The notation member 5 is fixed to the back surface of the main body 4. According to this configuration, the marking member 5 can be firmly fixed to the main body portion 4, and a problem that the marking member 5 falls off from the back surface of the main body portion 4 is less likely to occur.

  Next, another method of attaching the notation member 5 is shown in FIG. In the embodiment of FIG. 11, the positioning protrusion 7 is formed on the back surface of the outer peripheral edge of the main body 4 so as to protrude in the thickness direction, and the inner side surface of the positioning protrusion 7 is the main body side position restriction. The surface is S4. In addition, a guide groove 80 is formed on the outer peripheral surface of the notation member 5, and the inner surface of the guide groove 80 serves as a notation member side position regulating surface S3. The notation member side position restricting surface S <b> 3 of the guide groove 80 abuts on the main body side position restricting surface S <b> 4, whereby the notation member 5 is positioned in the in-plane direction on the back surface of the main body portion 4. Further, an engaging claw 70 that engages with the outer peripheral edge of the notation member 5 is formed at the distal end of the positioning protrusion 7. When the marking member 5 is inserted, the marking member 5 is inserted while the engaging claw 70 is elastically deformed. When the insertion is completed, the engagement claw 70 is elastically restored, and thereby the notation member 5 is fixed to the main body 4.

The external view of the water meter which concerns on this invention. Sectional drawing of a water meter. The lid is open. The surface view and sectional drawing of a cover part. The back view of a cover part. Another embodiment of the lid. FIG. 6 is a cross-sectional view. The modification of FIG. The figure which shows the example of attachment of a description member. The example which formed the heat crimping part. The other example of the attachment method of a description member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water meter 2 Lid part 3 Main body case 4 Main body part 4a See-through part 5 Notation member 6 Shading area 7 Positioning protrusion 8 Positioning hole 9 Heat-clamping part A1 Description item description area A2 Back side description item description area S3 Notation member side position regulation Surface S4 Body side position regulating surface

Claims (8)

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;
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 closed position for concealing the integrated display portion with respect to an edge portion forming the upper opening of the main body case, and a lid portion that can be opened and closed between an open position where the integrated display portion is visible. Prepared,
The lid portion has a see-through portion made of a transparent material that can be seen through in the thickness direction from the front surface side to the back surface side of the lid portion, and a body portion that is attached to the edge portion of the upper opening so as to be freely opened and closed, and non-transparent A notation that is formed in a plate shape or a sheet shape made of a member, and is attached in a form in which at least the front side is in close contact with the back surface of the fluoroscopic portion of the main body portion, and is a description item notation region in which predetermined description items are indicated The water meter is characterized in that the description item notation area formed on the surface of the notation member is visible from the surface side of the see-through part of the main body.   The water meter according to claim 1, wherein a back side description item notation area is formed separately from the description item notation region on the back surface of the notation member. The notation member is formed with a peripheral shape smaller than the peripheral shape of the main body,
A region between the peripheral portion of the see-through portion to which the notation member is attached and the peripheral portion of the main body portion is a light-shielding region in which see-through in the thickness direction from the front surface side to the back surface side is prevented. The water meter according to claim 1 or 2.   The water meter according to claim 3, wherein a portion forming the light shielding region in the main body portion is made of a light shielding material having a light transmittance smaller than that of the see-through portion in the thickness direction.   The said main-body part consists of the transparent material which makes the said see-through part entirely, and the light-shielding body whose light transmittance is smaller than the said see-through part is attached to the back surface of the said main-body part in the said light-shielding area | region. Water meter. In the notation member, a notation member side position restricting surface is formed along the thickness direction,
On the back surface of the main body part, a main body part side position restriction surface is formed along the thickness direction of the main body part, and the main body part side position restriction surface abuts on the notation member side position restriction surface, The water meter according to any one of claims 1 to 5, wherein a notation member is positioned in an in-plane direction on the back surface of the main body portion. A positioning protrusion that protrudes in the thickness direction from the back surface of the main body is formed,
A positioning hole into which the positioning protrusion is inserted is formed in the notation member,
The outer peripheral surface of the positioning protrusion is the main body side position restricting surface, the inner peripheral surface of the positioning hole is the notation member side position restricting surface, and the main body side position restricting surface and the notation member side position are The water meter according to claim 6, wherein the notation member is positioned in an in-plane direction on the back surface of the main body portion by contact with the restriction surface.   When the positioning protrusion is inserted into the positioning hole, a protrusion length of the positioning protrusion is determined so that the tip protrudes from the back surface of the notation member, and the tip of the positioning protrusion A heat caulking portion having a diameter larger than that of the positioning hole is formed in the portion, and the notation member is fixed in a form in which a seating surface of the heat caulking portion is in close contact with the back surface of the notation member. 7. The water meter according to 7.

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