JP5209986B2 - Water bottle - Google Patents

Description

  The present invention relates to a water meter tub that accommodates and protects a meter, a valve, and the like for waterworks installed in the ground.

  The water tank buried in the ground is generally composed of a frame body that accommodates a meter, a valve, and the like, and a lid body that can be opened and closed at an open top portion of the frame body. It is installed so that the upper surface of the lid body faces the ground surface.

  Conventionally, the lid body of such a water bottle is mainly made of a thermosetting resin. For example, a frame structure for underground structures shown in Patent Document 1 is known. As shown in FIG. 12, this underground structure fence frame includes a quadrilateral frame 100 having an open portion on the upper surface, and a lid body 200 that closes the upper surface open portion 101 of the frame 100 so as to be openable and closable. The pivot pins 102 protrude from the inner side surfaces of the upper surface opening portion 101 of the frame body 100, and the recess portions 201 and 202 into which the pivot pins 102 are loosely fitted are formed on both side surfaces of the lid body 200. In one recess 202, a communication portion 203 through which the pivot pin 102 can pass is formed.

  In addition, a cross-shaped rib structure 204 is provided on the back surface of the lid body 200 in the frame for the underground structure in order to complement the strength of the lid body 200.

Such a cross-girder-shaped rib structure is provided to supplement the strength of the lid main body, but in order to satisfy the strength standard of the lid main body by the cross-girder-shaped rib structure, The size, the thickness of the lid body, and the like had to be increased, which was a factor in increasing the weight of the lid body. In addition, to reduce costs, even if the lid body material is changed from a thermosetting resin to a thermoplastic resin, the simple cross-girder rib structure cannot meet the lid body strength standards, and the cost is reduced. It was in a situation that could not realize material conversion.
Utility Model Registration No. 2517091

  The problem to be solved by the present invention is to provide a lightweight and high-strength water tank, and more specifically, to provide a new rib structure on the back surface of the lid body.

The present invention includes a frame body and a lid body attached to the upper surface opening portion of the frame body so as to be openable and closable, and a water tank bowl provided with a rib structure on the back surface of the lid body. forming a rib unit ribs arranged in regular triangular shape, arranged with one another to share one side of the equilateral triangle, as that each rib intersect is made from the apex of the six equilateral triangle, formed by concatenating It is characterized by being.

Thus, water meter筺of the present invention, the back surface of the lid body, the three ribs units ribs arranged in regular triangular shape (hereinafter, referred to as "triangular units rib" or simply "unit ribs". ), The lid body can be effectively reinforced and the lid body can be reduced in weight compared to the conventional simple cross-shaped rib structure. In addition, in order to reduce costs, sufficient strength can be ensured even if the material of the lid body is changed from a thermosetting resin to a thermoplastic resin, and cost reduction by material change can be realized.

  That is, the rib structure composed of triangular unit ribs is the most stable minimum unit structure in which a load is evenly applied to the three ribs when a load is applied from above the lid body, so a small amount of resin A high-strength lid body can be formed by the amount. In addition, in the rib structure composed of triangular unit ribs, the resin is easy to flow when injection molding is performed, and the moldability is good.

  Table 1 shows a lid body having a rib structure composed of triangular unit ribs according to the present invention, a lid body having a square rib structure (hereinafter referred to as “comparative object 1”), and a hexagonal shape as comparative objects. The result of having performed the strength analysis (FEM analysis) about the lid main part (henceforth "comparison 2") which has a rib structure is shown.

  This strength analysis occurs in the rib in the maximum displacement in the vertical direction and when the load plate (250 mm × 100 mm) load (17 KN) is applied from the top to the center of the lid body (421 mm × 205 mm) in the vertical direction. The maximum stress is calculated.

  As a result, as shown in Table 1, under the conditions in which the present invention, comparison target 1 and comparison target 2 have substantially the same mass (resin amount), the present invention has a maximum displacement, compared with comparison target 1 and comparison target 2. Both maximum stresses are small values, indicating that the strength is high. In particular, regarding the maximum stress, the present invention is reduced by about 40% compared with the comparative object 1 and the comparative object 2, and it can be seen that the maximum stress is exhibited significantly.

  Moreover, in this invention, a design pattern can be formed by providing a convex part on the surface of a lid | cover main body. In this case, it is preferable that at least a part of the convex portion is formed at a position that matches a rib structure formed of triangular unit ribs. In this way, by aligning the position of the convex portion on the surface of the lid body with the position of the rib structure on the back surface of the lid body, the resin sink can be made inconspicuous when the lid body is injection molded. The strength can be improved efficiently with a small amount of resin.

  This will be described with reference to FIG. 11. First, when only the rib B exists on the back surface of the lid main body A as shown in FIG. Sinking is likely to occur at a portion C where the rib B intersects the opposite side of the rib B. This is because the solidification rate of the resin is slow at the thick portion, and a force that contracts during solidification (the force in the direction of the arrow in FIG. 11A) acts. On the other hand, as shown in FIG. 11 (b), when the convex portion D is formed at a position aligned with the rib B, the force shrinks during solidification after the injection molding process (in the direction of the arrow in FIG. 11 (b)). Even if the force) works, since the convex part D is formed, sink marks can be made inconspicuous.

  Furthermore, in this invention, a heat insulating board can be attached to the back surface of a lid | cover main body. By attaching a heat insulating plate to the back of the lid body in this way, the heat retaining effect in the water meter can be demonstrated, so that it is possible to prevent water pipes from freezing in the winter, and water drops generated in the water meter can It is possible to prevent the meter reading operation from being hindered by freezing.

As a structure for attaching the heat insulating plate to the back surface of the lid body, a protrusion is formed on the surface of the heat insulating plate facing the back surface of the cover body, and this protrusion is fitted to the hollow portion of the unit rib of the rib structure. Is preferred. As a result, the heat insulating plate can be reliably attached to the back surface of the lid body, and the heat retaining effect is improved. Furthermore, it is preferable that a heat insulating plate cover is attached so as to cover the lower surface of the heat insulating plate, and a protrusion formed on the heat insulating plate cover is fixed to the back surface of the lid body. Thereby, the heat insulating plate can be reliably fixed to the back surface of the lid body.

  The metered water bottle of the present invention is provided with a rib structure composed of triangular unit ribs on the back surface of the lid body, so that the lid body can be effectively reinforced and the lid body can be reduced in weight. In addition, in order to reduce costs, sufficient strength can be ensured even if the material of the lid body is changed from a thermosetting resin to a thermoplastic resin, and cost reduction by material change can be realized.

  Embodiments of the present invention will be described below based on examples shown in the drawings.

  FIG. 1 is an exploded perspective view showing an embodiment of a metered water bottle of the present invention. A metered water bottle of the present invention includes a frame body 10 that accommodates a meter, a valve, and the like therein, and a lid body 20 that is attached to the upper surface opening portion 11 of the frame body 10 so as to be opened and closed. In addition to this, the metered water tank of the present embodiment is provided on the lower surface of the heat insulating plate cover 50 and the heat insulating plate cover 50 that covers the lower surface of the reactant 30 and the heat insulating plate 40, and the lower surface of the heat insulating plate 40. A display plate 60 is provided.

FIG. 2 is a perspective view showing the back surface of the lid body 20. The lid body 20 of this embodiment is formed by molding (specifically, injection molding) a thermoplastic resin (specifically, polypropylene resin), and as shown in FIG. Is provided with a rib structure. The rib structure is formed by arranging three ribs 21a~21c a plurality of unit ribs 21 formed by arranging a positive triangular shape, and connected to each other so as to share one side of the positive triangle ing.

  Also, a rectangular reactant mounting seat 22 is formed in the vicinity of the center of the back surface of the lid main body 20 by removing a rib on one side of the unit rib 21, and the reactant mounting seat 22 is shown in FIG. The reactant 30 shown is attached. As shown in FIG. 3, the reactant 30 is formed in a shape in which a side surface of a rectangular metal plate is bent as a burrs 31, and is mounted on the reactant mounting seat 22 so as to shrink the burrs 31. It is fixed to the reactant mounting seat 22 by the restoring force of the burrs 31. By attaching the metal reactant 30 to the lid main body 20 in this way, the position of the water meter can easily be detected by the metal detector, and the meter reading worker can easily determine the position of the water meter. You can search.

  As shown in FIG. 2, it is not necessary to provide a rib structure on the entire back surface of the lid body 20, but from the viewpoint of reinforcement of the lid body 20, the minimum necessary amount of the reactant mounting seat 22, screw mounting hole 26, etc. The area where the rib structure is provided is preferably as large as possible except for the limited portion.

  As shown in FIG. 1, a design pattern is formed on the surface of the lid body 20 by the convex portions 23. The convex portion 23 forming the design pattern is composed of a linear convex portion 23a and a curved convex portion 23b. Of these, the linear convex portion 23a is a rib 21a to a rib 21a constituting the rib structure shown in FIG. It is formed at a position aligned with 21c and the lid body front and back direction. As described above with reference to FIG. 11, the resin sink mark is obtained by aligning the positions of the linear protrusions 23a on the lid body surface and the ribs 21a to 21c on the back surface of the lid body in the front-back direction. Can be made inconspicuous.

  A mark seat 24 and a multipurpose display seat 25 are formed on the surface of the lid body 20. The mark seat 24 is provided with a mark such as a city emblem in addition to the characters “water” shown in FIG. The mark seat 24 is not provided with a mark or the like by molding. Instead, as shown in FIG. 4, a mark component 70 is used, and a leg portion 71 formed on the back surface of the mark component 70 is attached to the mark seat 24. After mounting in the mounting hole 24a formed in the above, the triangular protrusion 72 portion formed on the entire outer periphery of the back surface of the mark component 70 may be fixed by melting and welding with ultrasonic waves. At this time, by mounting the mark component 70 so that the protrusion 73 formed on the base end portion of the leg portion 71 of the mark component 70 is fitted into the notch 24b formed in the mounting hole 24a of the mark seat 24, The orientation of the mark component 70 can be aligned to a desired orientation.

Further, as a method of fixing the mark component 70, a method of fixing with a screw can be employed in addition to a method of melting and welding with ultrasonic waves. In this case, as shown in FIG. 5, screws 80 are attached to the screw attachment holes 26 formed in advance at positions corresponding to the mark seats 24 on the front surface of the lid body 20 from the back surface of the lid body 20 via the washers 81. Then, it is screwed to the leg portion 71 of the mark component 70.

  On the other hand, the multipurpose mark 25 shown in FIG. 1 is provided with a loading prohibition pictogram, a water saving pictogram, a request sticker, and the like. In the case of non-loading pictograms and water-saving pictograms, they are provided integrally by molding, and in the case of request seals, they are provided by sticking with seals. Therefore, in the case of a wish seal, it can be attached and detached.

  Next, the heat insulating plate 40 shown in FIG. 1 is made of foamed polypropylene, and a plurality of protrusions 41 are formed on the surface facing the back surface of the lid body 20. The protrusion 41 has a triangular unit rib having a shape and position so that the protrusion 41 can be fitted into a hollow portion of the triangular unit rib 21 (see FIG. 2) constituting the rib structure provided on the back surface of the lid body 20. 21 so as to correspond to 21.

  After the projection 41 is fitted in the hollow portion of the unit rib 21 on the back surface of the lid body 20, the heat insulation plate 40 is covered so as to cover the lower surface of the heat insulation plate 40 in order to securely fix the heat insulation plate 40 to the back surface of the lid body 20. A heat insulating plate cover 50 of the same material is attached, and the heat insulating plate cover 50 is fixed to the back surface of the lid body 20. Specifically, as shown in FIG. 6, the protrusion 51 formed on the heat insulating plate cover 50 is fitted into the through hole 42 of the heat insulating plate 40, and the tip of the protrusion 51 is ultrasonically applied to the end surface of the rib structure of the lid body 20. Fix by melting and welding. Alternatively, as shown in FIG. 7, the screw 90 is screwed into the protrusion 51 of the heat insulating plate cover 50 and penetrated, and screwed into the screw hole 27 formed at the intersection of the unit ribs 21 on the back surface of the lid body 20 to be fixed. .

  Further, a display plate 60 is attached to the back surface of the heat insulating plate cover 50. Specifically, as shown in FIG. 8, the four corners of the display plate 60 are engaged with the engaging portions 52 formed at four places on the heat insulating plate cover 50. On the display plate 60, the name of the operator, the date of construction, the name of the construction shop, the faucet number, and the like are displayed. By attaching such a display plate 60 to the back side of the lid body 20 so as to be detachable, it becomes possible to provide information to water managers, construction contractors, maintenance managers, etc., and to improve the efficiency of inspection and replacement work. Can do.

  Next, a structure for attaching the lid body 20 to the frame body 10 will be described.

  FIG. 9 is a cross-sectional view showing a connecting portion between the lid body 20 and the frame body 10. Referring to FIGS. 1 and 9, pivot pins 12 project from both inner side surfaces of the upper surface opening portion 11 of the frame body 10, and the pivot pins 12 are loosely fitted to rear side portions of the lid body 20. A recess 28 is formed, and one recess 28a is formed with a communication portion 28b that opens to the rear edge of the lid body 20 and through which the pivot pin 12 can pass. Although the other recess is not shown, it is formed in a substantially circular shape so that the pivot pin 12 can be loosely fitted. The pivot pin 12 is formed in a D-shaped cross-section obtained by cutting a part of the circular cross-section, and the opening length L1 of the communication portion 28b formed in one recess 28a of the lid body 20 is the shortest length of the D-shaped cross-section. It is formed substantially the same as the length L2.

  In such a configuration, when the lid body 20 is attached to the frame body 10, one of the pivot pins 12 of the frame body 10 is loosely fitted in the other recess of the lid body 20 described above, and then shown in FIG. As described above, the communicating part 28b of the one recess 28a of the lid body 20 is aligned with the shortest part of the pivot pin 12 of the frame body 10, and the lid body 20 is pushed in as it is, so that the pivot pin 12 is moved to the one recess. It passes from the communication part 28b of 28a, and it is made to loosely fit in one recessed part 28a. As a result, the lid body 20 is connected to the frame body 10 so as to be openable and closable. After the lid body 20 is once connected to the frame body 10, the positional relationship between the lid body 20 and the pivot pin 12 of the frame body 10 is again as shown in FIG. 10 unless the lid body 20 is pulled out with a strong force. The connection state between the lid body 20 and the frame body 10 is stably maintained.

It is a disassembled perspective view which shows one Example of the metering water bottle of this invention. It is a perspective view which shows the back surface of a lid body. It is explanatory drawing which shows the point which attaches a reactant to a lid body. It is explanatory drawing which shows the structure for mounting | wearing a mark component with a lid | cover main body. It is explanatory drawing which shows the other structure for mounting | wearing a mark component with a lid body. It is explanatory drawing which shows the structure for attaching a heat insulation board to a lid body. It is explanatory drawing which shows the other structure for attaching a heat insulating board to a lid body. It is explanatory drawing which shows the point which attaches a display plate to the heat insulation board cover of a lid main body back surface. It is sectional drawing which shows the connection part of a lid body and a frame. It is explanatory drawing which shows the point which connects a cover main body to a frame. It is explanatory drawing which shows the condition when shape | molding a cover main body. It is a disassembled perspective view which shows the conventional water meter bowl.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Frame body 11 Upper surface open part 12 Pivoting pin 20 Lid body 21 Unit rib 21a-21c Rib 22 Reactor mounting seat 23, 23a, 23b Convex part 24 Mark seat 24a Mounting hole 24b Notch 25 Multipurpose display seat 26 Screw mounting hole 27 Screw holes 28, 28a Recessed portion 28b Communication portion 30 Reactor 31 Frog portion 40 Heat insulation plate 41 Protrusion 42 Through hole 50 Heat insulation plate cover 51 Protrusion 52 Engagement portion 60 Display plate 70 Mark component 71 Leg portion 72 Triangular protrusion 73 Protrusion 80 screw 81 washer 90 screw 100 frame 101 upper surface open part 102 pivot pin 200 lid body 201, 202 recess 203 communication part 204 rib structure

Claims (3)

A frame body, a lid body attached to be opened and closed in the open-top portion of the frame, the water meter筺having a rib structure on the back surface of the cover body, the rib structure, a positive three ribs Unit ribs arranged in a triangular shape are arranged side by side so as to share one side of the equilateral triangle, and are formed so that the points where each rib intersects are formed from the vertices of six equilateral triangles . Water meter bowl characterized by.   The water meter bowl according to claim 1, wherein a design pattern is formed by providing a convex portion on a surface of the lid main body, and at least a part of the convex portion is formed at a position aligned with the rib structure. And heat insulating plate are attached to the rear surface of the lid body, the heat insulating plate, a projection formed on the rear surface opposite to the surface of the lid body, is fitted to the hollow portion of the unit ribs of the rib structure Rutotomoni The amount of water according to claim 1 or 2 , wherein a heat insulating plate cover is attached so as to cover a lower surface of the heat insulating plate, and a protrusion formed on the heat insulating plate cover is fixed to the back surface of the lid body. Instrument.

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