JP5188252B2 - Cover attachment structure of liquid container - Google Patents

Description

  The present invention relates to a lid attachment part structure of a liquid container in which it is difficult to remove a lid provided in a liquid outlet opening of a liquid container such as a container for containing liquid.

  As disclosed in, for example, Patent Document 1, a conventional container for storing a liquid is provided with an openable / closable lid that closes a liquid outlet opening of the container by screw-type screwing. It is known that the liquid inside the container can be taken out by removing from the container.

That is, in the container disclosed in Patent Document 1, the lid is easily removed, and the disadvantage is that the liquid in the container is easily extracted and the liquid is not used correctly.
JP-A-11-1254

  Since the lid of the container disclosed in Patent Document 1 is merely screwed into the liquid outlet opening of the container, the problem is that the lid can be easily removed from the container, as a result. There are problems that the liquid in the container can be easily and illegally extracted, and that the extracted liquid is misused or not used correctly.

  The object of the present invention is to solve such a problem, and prevents the lid from being easily removed from the liquid storage body such as a container or a synthetic resin bag, so that the liquid in the liquid storage body can be tampered with. An object of the present invention is to provide a lid mounting part structure for a liquid container that is difficult to be pulled out.

According to the first aspect of the present invention, the lid mounting portion structure of the liquid container is a liquid in which a lid made of a synthetic resin is screwed into a cylindrical portion serving as a liquid extraction opening of the liquid container. A lid attachment structure of a storage body, comprising a protective cover made of hard synthetic resin that wraps around the lid, and this protective cover is formed by combining two semicircular cover bodies together. Each cover body is provided with an insertion piece protruding from the other end of the other cover body on one end side, and the cover bodies are moved toward each other on the other end side of each cover body. And a locking piece that fits into a concave portion formed on the outer surface of the insertion piece inserted inside the other end side and stops the movement of the cover body in the direction opposite to the insertion direction, and further includes a cover. The lid on the upper and lower ends of the body Plate portion sandwiching from above and below is provided, the cover member is opened to form part of the linking portions and the engaging pieces of the plug piece at both ends of the configured and the cover body so as to idle relative to the lid The window part to be formed is formed .

  As described above, in the lid mounting portion structure of the liquid container according to the present invention, the periphery of the lid is wrapped with the protective cover made of hard synthetic resin, and the cover of the protective cover is idle with respect to the lid. Therefore, even if the protective cover and the lid are to be rotated together, the protective cover cannot be rotated around the lid and cannot be removed by rotating the lid. In addition, in the state where the protective cover is set so as to wrap around the lid body, even if an attempt is made to open the lid body in order to take out the liquid in the container, the two cover bodies may be shifted to the left and right in order to remove the coupling. Since it hits the outer surface of the lid as soon as it is moved, it cannot be moved in the direction shifted to the left or right, and when the two cover bodies are moved in the direction opposite to the insertion direction of the insertion piece, the insertion piece Since the latching piece is fitted in the concave portion of this, it cannot be moved in the direction opposite to the insertion direction, and the protective cover cannot be removed. When removing the protective cover, remove the engagement between the concave part of the insertion piece and the engagement piece using an appropriate jig, or use a blunt device to remove the engagement part between the concave part of the insertion piece and the engagement piece. It can be done by destroying.

Hereinafter, an embodiment of the present invention will be specifically described with reference to FIGS.
In the figure, reference numeral 1 denotes a synthetic resin container for storing a liquid such as a detergent or a cleaning liquid (specifically, a stock solution which is diluted and used later). The upper end of the container 1 is for taking out liquid near one side. The opening 2 is formed to open upward. Specifically, the liquid take-out opening 2 is formed in a short cylindrical portion 4 that rises from a shoulder portion 3 formed so as to be one step higher than the upper surface of the container 1, and an external thread is provided on the outer peripheral surface of the cylindrical portion 4. Part 5 is formed. The liquid take-out opening 2 is closed by a synthetic resin lid body 7 formed on the inner peripheral surface with a female screw portion 6 screwed into the male screw portion 5 of the cylindrical portion 4. A circular liquid outlet 7b is formed at the center of the upper end plate portion 7a of the lid 7, and an air hole 7c smaller than the liquid outlet 7b is formed in the vicinity of the liquid outlet 7b. A flexible valve body 8 made of silicon or rubber is provided inside the lid body 7 so as to overlap the lower surface of the upper end plate portion 7a, and the valve body 8 is placed inside the lid body 7. An O-ring-shaped packing 9 is provided so as to be sandwiched between the upper end plate portion 7 a of the lid body 7. The outer diameter of the packing 9 is substantially the same as the inner diameter of the lid body 7, so that the packing 9 does not fall off without permission when the lid 9 has the packing 9 inside. The valve body 8 is connected by an O-ring-shaped outer peripheral portion 8a and an upper end plate of the lid body 7 that is connected to the outer peripheral portion 8a by a single connecting portion 8b that is within a range surrounded by the outer peripheral portion 8a. And a circular valve plate 8c for opening and closing the liquid outlet 7b of the portion 7a from below. The packing 9 is configured by sandwiching a ring-shaped member 9a made of a foam material from above and below with sheets 9b and 9c made of a synthetic resin film. The lid 9 is screwed into the cylinder 4 and tightened to press the packing 9 against the upper end of the cylinder 4, and the outer peripheral portion 8 a of the valve body 8 is connected to the upper end plate 7 a of the lid 7 and the packing. 9, the sealing performance between the cylindrical portion 4 and the lid body 7 is maintained.

  By the way, a tube 10 connected to a suction means (not shown) is inserted into the liquid take-out port 7b formed in the upper end plate portion 7a of the lid body 7 by pushing down the valve plate 8c obliquely to the bottom in the container 1. Thus, the liquid (stock solution) in the container 1 is sucked up in a fixed amount and automatically taken out, diluted and used.

  In the above configuration, the lid body 7 is screwed into the cylindrical portion 4, and therefore the lid body 7 can be easily detached from the cylindrical portion 4 by pulling out the tube 10 from the container 1 and reversing the lid body 7. There arises a problem that the liquid in the container 1 is illegally extracted.

  Therefore, in the present embodiment, a protective cover 11 made of a hard synthetic resin that wraps around the lid body 7 is provided, and the lid body 7 is reversed and removed from the outside of the protective cover 11 in order to open the liquid extraction opening 2. However, the lid 7 cannot be turned. More specifically, the protective cover 11 is constituted by combining two semicircular cover bodies 12 and 13 combined with each other, and the other cover is provided on one end side of each of the cover bodies 12 and 13. Insertion pieces 12a and 13a to the other end sides of the bodies 13 and 12 are provided so as to protrude, and the cover bodies 12 and 13 are moved toward each other on the other end sides of the cover bodies 12 and 13, respectively. A locking piece 12c that fits into the recessed portions 13b, 12b formed on the outer surface of the insertion pieces 13a, 12a inserted on the other end side and stops the movement of the cover bodies 12, 13 in the direction opposite to the insertion direction, 13c. It should be noted that the upper and lower ends of the cover bodies 12 and 13 have plate portions 12d and 13d that are in contact with the upper shoulder 7d of the lid body 7 so as to sandwich the lid body 7 from above and below, and plate portions 12e and 12e that are close to the lower surface of the lid body 7 13e is provided. Further, on the inner surfaces of the cover bodies 12 and 13, reinforcing ribs 12 f and 13 f are formed in such a length that the front ends thereof do not come into contact with the outer periphery of the lid body 7 except for the other end. Furthermore, the window parts 12g and 13g opened to the connection part with the said insertion pieces 12a and 13a and the formation part of the latching pieces 12c and 13c are formed in the both ends of the cover bodies 12 and 13. FIG.

  In the above configuration, when wrapping the periphery of the lid body 7 with the protective cover 11, the two cover bodies 12 and 13 are positioned on both sides of the lid body 7, and in this state, the cover bodies 12 and 13 are moved toward each other. Insertion pieces 12 a and 13 a on one end side of each cover body 12 and 13 are inserted inside the other end side of the other cover bodies 13 and 12. Accordingly, the locking pieces 13c and 12c are fitted into the concave portions 12b and 13b of the insertion pieces 12a and 13a, and the movement of the cover bodies 12 and 13 in the direction opposite to the insertion direction is stopped. In a state where the protective cover 11 is set so as to wrap around the lid body 7, if the two cover bodies 12 and 13 are moved in a direction shifted to the left and right in order to remove the coupling, the outer surface of the lid body 7 is immediately hit. If the two cover bodies 12 and 13 cannot be moved in the direction opposite to the insertion direction, and if the two cover bodies 12 and 13 are to be moved in the direction opposite to the insertion direction, they are engaged with the concave portions 12b and 13b of the insertion pieces 12a and 13a. Since the stop pieces 13c and 12c are fitted, they cannot be moved in the direction opposite to the insertion direction. Further, even if the protective cover 11 is strongly pressed against the outer periphery of the lid body 7 and the protective cover 11 and the lid body 7 are rotated together, the protective cover 11 is made of a hard synthetic resin and is hard, and the ribs 12f and 13f The protective cover 11 is idle with respect to the lid 7 so that the lid 7 cannot be rotated. Therefore, even if it is attempted to open the lid 7 to take out the liquid in the container 1 unnecessarily, the lid 7 cannot be opened unless the protective cover 11 is destroyed. It is a structure that can easily be found. It is also possible to prepare a dedicated jig for removing the protective cover 11 without destroying it, and the manager manages the dedicated jig, so that any fraud at the site where the liquid is used cannot be made. Then, by preparing a dedicated jig, the liquid inside the container 1 disappears, and the lid 7 can be removed from the cylindrical portion 4 in order to inject the liquid into the container 1 again. When the coupling between the recessed portions 12b, 13b of the 13a and the locking pieces 13c, 12c is removed, either one of the insertion pieces 12a, 13a is strongly moved using a jig inside at any position of the window portions 12g, 13g. By pushing, the connection between the insertion pieces 12a, 13a and the locking pieces 13c, 12c can be released.

  Further, in order to take out the liquid in the container 1 unnecessarily, the tube 10 is pulled out of the container 1 and the container 1 is inclined to take out the liquid from the liquid take-out opening 2. Since the flexible valve body 8 made of silicon or rubber is provided so as to overlap the lower surface of the plate portion 7a, the valve plate 8c closes the liquid outlet 7b and the air hole 7c from the inside by the internal pressure of the liquid. That is, the liquid in the container 1 cannot be taken out. Even if the valve plate 8c is bent downward at the position of the connecting portion 8b by the insertion of the tube 10, the valve plate 8c can close the liquid outlet 7b from the inside by the internal pressure of the liquid.

  By the way, in embodiment mentioned above, the liquid in the container 1 is taken out quantitatively via the suction means by the tube 10 inserted in the container 1 from the liquid outlet 7b formed in the upper end plate part 7a of the lid 7. However, the protective cover 11 can also be attached to a lid that is not provided with holes such as the liquid outlet 7b and the air holes 7c in the upper plate 7a of the lid 7. In that case, when the liquid in the container 1 is taken out, the cover body is removed from the liquid take-out opening 2 of the cylindrical portion 4 with the protective cover 11 removed using a jig from the lid body, and the container 1 is tilted. What is necessary is just to take out the liquid inside. In the above-described embodiment, a synthetic resin container is used as an example to store the liquid. However, a liquid storage body such as a synthetic resin bag, bottle, or can may be used. When a synthetic resin bag is used, the bag is built in a box made of cardboard, such as cardboard, for example, and a cylindrical portion that serves as a liquid outlet opening of the bag is projected from the upper end of the box, and the aforementioned cylindrical portion is The lid 7 may be screwed and attached, and a protective cover 11 that wraps the lid 7 may be attached. Furthermore, if the protective cover 11 is disassembled or destroyed using a jig at the time of disposal, the valve body 8 and the packing 9 fitted inside the lid body 7 can also be taken out from the lid body 7 and separated. It has a simple structure. When the protective cover 11 is destroyed, the engaging portions between the recessed portions 12b, 13b of the insertion pieces 12a, 13a and the engaging pieces 13c, 12c may be struck with a blunt or the like.

It is a schematic disassembled perspective view of the cover attachment part structure of the liquid storage body in one embodiment of the present invention. It is an expansion disassembled perspective view of the cover body. It is an expansion disassembled perspective view of the protective cover. It is a principal part perspective view which shows the state which covered the cover body with the protective cover. It is a principal part expansion perspective view which shows the state which covered the cover body with the protective cover. It is XX sectional drawing of FIG. It is YY sectional drawing of FIG. It is whole container sectional drawing which shows the state which inserted the tube for siphoning in the container from the cover body. It is an important section expanded sectional view showing the state where the container inclined in the state where the tube was pulled out from the container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 2 Liquid taking-out opening part 3 Shoulder part 4 Cylinder part 5 Male screw part 6 Female screw part 7 Cover body 7a Upper end board part 7b Liquid taking-out port 7c Air hole 8 Valve body 8a Outer part 8b Connection part 8c Valve board 9 Packing 9a Ring Shaped member 9b, 9c Sheet 10 Tube 11 Protective cover 12, 13 Cover body 12a, 13a Insertion piece 12b, 13b Recessed part 12c, 13c Locking piece 12d, 13d Plate part 12e, 13e Plate part 12f, 13f Rib 12g, 13g Window Part

Claims (1)

A lid mounting structure for a liquid container, in which a lid made of a synthetic resin is screwed into a cylindrical portion serving as an opening for taking out the liquid of the liquid container, and is rigid and wraps around the lid A protective cover made of synthetic resin is provided, and this protective cover is formed by joining two semicircular cover bodies together and combining each cover body with one end side of each cover body toward the other end side of the other cover body. A concave shape formed on the outer surface of the insertion piece inserted into the inside of the other end side by moving the cover body toward each other in the other end side of each cover body The cover body is provided with a locking piece that stops the movement of the cover body in the direction opposite to the insertion direction, and the upper and lower ends of the cover body are provided with plate portions that sandwich the lid body from above and below. The cover body is against the lid Is configured to around cover lid of the liquid container that is at both ends, characterized in that the window opening to form part of the connecting portion and the engaging piece with the insertion piece is formed of Mounting part structure.

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