JP3051973U - Lid for water meter box - Google Patents

Abstract

(57) [Summary] [Problem] To ensure freezing of a water meter by ensuring heat insulation of a water meter box, and to solve a problem that mud and dust easily accumulate in the water meter box. . A box body 2 in a water meter box B is provided.
When the water meter box lid 1 is attached to the upper end opening 2o to open and close the upper end opening 2o, the heat insulating material 4 is fixed to the back surface 3i of the lid main body 3 attached to the upper end opening 2o.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a lid for a water meter box attached to a water meter box buried underground.

[0002]

[Prior art]

 Generally, a water meter connected to a water pipe is housed inside a water meter box buried underground. The water meter box usually consists of a box body with an upper end opening and a lid placed inside the upper end opening, and this lid is supported by a hinge part provided on one side of the box body to be openable and closable. Is done. The water meter box is buried outdoors under the ground so that the position of the lid is almost the same height as the ground.

[0003]

[Problems to be solved by the invention]

 However, the conventional water meter box described above, particularly, the lid attached to the box body has the following problems.

First, when the water meter box is installed in a cold region, the box body buried in the ground is insulated by geothermal heat, but the lid is directly in contact with the outside air. There is a possibility that the internal temperature of the water meter may drop and the water meter may freeze.

Secondly, since the lid is made of a single piece of iron casting, muddy water or the like intrudes into the water meter box through a gap formed between the box body and the lid, and mud or dust enters the inside. Etc. easily accumulate.

[0006] The present invention solves such problems in the conventional technology, and ensures freezing of the water meter by ensuring the heat insulating properties of the water meter box. The purpose of the present invention is to provide a lid for a water meter box that eliminates the problem that mud and dust easily accumulate inside the box.

[0007]

Means and Embodiments for Solving the Problems

 According to the present invention, a lid attached to the upper end opening 2o is provided when the water meter box lid 1 is attached to the upper end opening 2o of the box main body 2 of the water dispenser box B to open and close the upper end opening 2o. A heat insulating material 4 is fixed to the back surface 3i of the main body 3.

In this case, according to a preferred embodiment, the heat insulating material 4 uses a heat insulating plate 10 integrally formed of a foam material such as styrofoam or urethane foam, and the heat insulating plate 10 closes the lid body 3. In this case, part or all of the outer edge 10 s of the heat insulating plate 10 is formed in a shape that comes into contact with or comes close to the lid receiving portion 2 s provided on the box body 2.

As a result, since the back surface 3i of the lid body 3 is covered with the heat insulating plate 10 (heat insulating material 4), the heat insulation of the entire lid 1 is greatly improved. Further, depending on the shape of the heat insulating plate 10, a part or all of the outer edge portion 10s of the heat insulating plate 10 comes into contact with or comes close to the lid receiving portion 2s of the box main body 2, so that there is no gap between the lid 1 and the box main body 2. Alternatively, the size becomes small, and intrusion of muddy water or the like into the water meter box B is prevented.

[0010]

【Example】

 Next, a preferred embodiment according to the present invention will be described in detail with reference to the drawings.

First, the structure of a water meter box B including the lid 1 according to the present embodiment will be described with reference to FIGS.

The water meter box B is roughly divided into a box body 2 and a lid 1 attached to the box body 2. The box body 2 is made of iron casting and has a substantially trapezoidal overall side shape and a substantially oval planar shape. The upper end of the box body 2 is opened to provide an upper end opening 2o, and a lid receiving portion 2s horizontally projecting inward by a predetermined width is integrally formed on the inner peripheral surface 2i of the upper end opening 2o. To be provided. On the other hand, holes 21 and 22 for passing water pipes P1 and P2 are provided on the front and rear side surfaces of the lower part of the box body 2. Further, a bulging portion 23 bulging outward is formed at one end of the upper end of the box body 2 as shown in FIG. As a result, a concave portion 24 is provided on the inner peripheral surface 2i, and a pair of bracket portions 25 and 26 are formed so that both sides of the concave portion 24 face each other. A shaft 27 combining bolts and nuts is installed between the brackets 25 and 26.

On the other hand, the lid 1 according to the present embodiment is attached to the upper end opening 2 o of the box body 2. The lid 1 includes a lid main body 3 and a heat insulating plate 10 (heat insulating material 4) fixed to the back surface 3i of the lid main body 3. The lid body 3 is formed of an iron casting into a shape that can be accommodated inside the inner peripheral surface 2i. The lid body 3 has an edge portion 31 extending from the periphery to the back surface 3i side, and has a rib portion 32 standing upright on the back surface 3i.

On the other hand, the heat insulating plate 10 is integrally formed into an oval shape as shown in FIG. 4 using a foam material such as styrene foam or urethane foam. The heat insulating plate 10 is fixed to the back surface 3i of the lid body 3 with an adhesive or a double-sided tape. Thereby, the heat insulating plate 10 covers almost the entire back surface 3 i of the lid body 3. Further, the heat insulating plate 10 has a predetermined thickness, and as shown in FIG. 5, when fixed to the back surface 3 i of the lid main body 3, is housed inside the edge 31 of the lid main body 3. A step 11 is formed at the lower end of the outer edge 10 s of the box 10, and when the lid main body 3 is closed, part or all of the step 11 is brought into contact with or close to the lid receiving section 2 s of the box main body 2. In FIG. 4, reference numeral 12 denotes a groove for accommodating the rib portion 32 of the lid main body 3, and reference numeral 13 denotes a recess for accommodating the handle 28 provided on the lid main body 3.

Further, on one side of the lid body 3, a convex portion 33 that can be accommodated in the concave portion 24 is formed so as to protrude outward in the surface direction. Further, a bearing groove 34 having a substantially U-shaped cross section, which is concave in the surface direction of the lid 1, is formed at the tip of the projection 33. The shaft 27 is accommodated in the bearing groove portion 34 to form a hinge portion 35.

Next, the overall function of the water meter box B including the function of the lid 1 according to the present embodiment will be described.

First, as shown in FIG. 1, the box body 2 is buried underground E, and contains a water meter M therein. The water pipes P1 and P2 are connected to both ends of the water meter M, respectively, and are led out of the holes 21 and 22 to the outside.

On the other hand, a substantially U-shaped bearing groove 34 provided on the convex portion 33 of the lid 1 is engaged with the shaft 27. Thereby, the convex portion 33 is accommodated in the concave portion 24, and the lid 1 is arranged inside the inner peripheral surface 2 i of the box main body 2. The state shown in FIG. 1 is a state in which the lid 1 is fully closed, and the upper surface of the lid 1 substantially coincides with the upper end opening 2o of the box body 2.

The lid 1 can be opened by manually lifting the handle 28 provided on the opposite side of the hinge 35. The lid 1 stands upright and diagonally when fully opened, and can lean against the box body 2 side. In this case, since the bearing groove 34 provided in the projection 33 is provided in a concave shape in the surface direction of the lid 1, the lid 1 can be pulled out in the surface direction except when the lid 1 is fully closed, and can be removed from the box body 2 as necessary. it can. Therefore, inspection work and the like of the water meter M can be easily performed.

Meanwhile, since the back surface 3 i of the lid body 3 is covered with the heat insulating plate 10, the heat insulation of the entire lid 1 is greatly improved. Therefore, freezing of the water meter M is reliably prevented even when the water meter M is installed in a cold region. In particular, in the case of the present example in which the heat insulating plate 10 was provided, the internal temperature of the water meter box B during the cold period was higher by 3 to 4 ° C. than in the case where the heat insulating plate 10 was not provided.

Moreover, the shape of the heat insulating plate 10 is formed such that a part or all of the outer edge 10 s of the heat insulating plate 10 is in contact with or close to the lid receiving portion 2 s of the box main body 2 when the lid main body 3 is closed. As a result, the gap between the lid 1 and the box body 2 is eliminated or reduced, and the intrusion of muddy water or the like into the water meter box B is prevented. The problem that the liquid is easily accumulated is eliminated.

Although the embodiment has been described in detail above, the present invention is not limited to such an embodiment, and a detailed configuration, shape, material, and the like do not depart from the gist of the present invention. It can be arbitrarily changed, added, or deleted. For example, the heat insulating material 4 is exemplified by the heat insulating plate 10 using a foam material. However, as a material of the heat insulating plate 10, other materials other than those illustrated can be used. In addition, the present invention is not limited to the heat insulating plate 10, but includes a method of applying a heat insulating material or the like.

[0023]

[Effect of the invention]

 As described above, the present invention relates to a water meter box lid attached to the upper end opening of the box body of the water meter box and opening and closing the upper end opening, and is provided on the back surface of the lid body attached to the upper end opening. Since the heat insulating material is fixed, the following remarkable effects can be obtained.

Since the back surface of the lid body is covered with a heat insulating material, the heat insulation of the entire lid can be greatly improved, and the water meter can be reliably prevented from freezing.

According to a preferred embodiment, if the shape of the heat insulating plate is formed so that part or all of the outer edge portion is in contact with or close to the lid receiving portion of the box main body, the gap between the lid and the box main body is reduced. It is lost or reduced, preventing intrusion of muddy water and the like into the water meter box, and it is possible to solve a problem that mud and dust easily accumulate inside the water meter box.

It is sufficient to attach a heat insulating material to the back surface of the lid body, so that it is excellent in low cost performance and can be retrofitted, so that it can be easily applied to the installed water meter box. Excellent in nature.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a water meter box provided with a water meter box lid according to an embodiment of the present invention;

FIG. 2 is a longitudinal front view of the same water dispenser box,

FIG. 3 is a plan view of the same water dispenser box,

FIG. 4 is a plan view of a heat insulating plate used for a water meter box cover according to the embodiment;

FIG. 5 is an enlarged view of a main part of a lid for the same water container box,

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lid for water meter box 2 Box main body 2o Upper end opening part 2s Lid receiving part 3 Lid main body 3i Back surface of lid main body 4 Heat insulating material 10 Heat insulating plate 10s Outer edge of heat insulating plate B Water meter box

Claims (3)

[Utility model registration claims] 1. A water meter box lid attached to an upper end opening of a box main body of a water meter box to open and close the upper end opening, wherein a heat insulating material is provided on a back surface of the lid main body attached to the upper end opening. A lid for a water meter box, which is fixed. 2. The water meter box lid according to claim 1, wherein the heat insulating material is a heat insulating plate integrally formed of a foam material such as styrene foam or urethane foam. 3. The heat insulating plate according to claim 1, wherein, when the lid main body is closed, a part or all of an outer edge portion of the heat insulating plate is formed in a shape to be in contact with or close to a lid receiving portion provided in the box main body. A lid for a water meter box according to claim 2, characterized in that: