JP5171375B2 - Cover structure of liquid container - Google Patents

Description

  The present invention relates to a lid structure provided in a liquid outlet opening of a liquid storage body such as a container for storing liquid.

For example, as disclosed in Patent Document 1, a conventional container for storing a liquid is fitted with a fixing cap that holds the liquid suction tube in an upright state with respect to the container in the liquid outlet opening of the container. It is known that a liquid sucking tube is inserted into a container through a hole of a cap so that the liquid in the container is sucked and taken out. In other words, the fixing cap disclosed in Patent Document 1 is fitted into the liquid extraction opening of the container, and the fixing cap is removed in a state in which the lid that closes the liquid extraction opening of the container is removed. A liquid suction tube is inserted through the hole to suck up and take out the liquid in the container.
JP-A-11-1254

  In the container disclosed in Patent Document 1, if the liquid sucking tube is pulled out from the fixing cap, if a person's foot is caught in the container and the container falls down, the fixing cap There is a problem that liquid inside the container spills out from the hole, and when the liquid suction tube is pulled out from the fixing cap, it is necessary to always close the liquid outlet opening of the container with a lid. Moreover, in what was disclosed by the said patent document 1, in order to insert a liquid suction tube in a container, the cap for fixing was required separately from the cover body which opens and closes the liquid extraction opening part of a container.

  An object of the present invention is to solve such a problem, and even when the liquid storage body such as a container or a synthetic resin bag is tilted or falls down, the liquid inside the liquid storage body does not spill out, and the lid An object of the present invention is to provide an inexpensive lid structure for a liquid container without using a fixing cap separately from the body.

  The lid structure of the liquid container according to claim 1 of the present invention is a liquid container in which a lid made of synthetic resin is screwed into a cylindrical portion serving as a liquid extraction opening of the liquid container and closed. In the lid structure, a liquid outlet for inserting a liquid suction tube is formed in the upper end plate portion of the lid body, and inside the lid body so as to overlap the lower surface of the upper end plate portion. Made of silicon or rubber, it has flexibility and is connected by an O-ring-shaped outer periphery and a single connecting portion that exists within the range surrounded by the outer periphery and can be bent at the outer periphery. A valve body having a circular valve plate that opens and closes the liquid outlet of the plate portion from the lower side is provided, and the outer peripheral portion of the valve body is sandwiched between the upper end plate portion of the lid body inside the lid body. Thus, an O-ring-shaped packing is provided.

  As described above, the lid structure of the liquid container according to the present invention is such that when the liquid container is tilted or falls in a state where the tube is not inserted into the liquid container such as a container or a synthetic resin bag, the liquid container Due to the internal pressure, the valve plate can close the liquid outlet formed in the upper end plate portion of the lid from the inside, so that the liquid inside the liquid container does not spill out. Therefore, it is not necessary to use both the lid and the fixing cap, and an inexpensive liquid container lid structure can be provided.

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. The liquid (stock solution) in the container 1 is taken out using a pump or the like and diluted before use.

  In the above configuration, since the lid body 7 is screwed onto the cylinder portion 4 and attached, the lid body 7 can be easily detached from the cylinder portion 4 by pulling out the tube 10 from the container 1 and reversing the lid body 7. Thus, there arises a problem that the liquid in the container 1 is illegally extracted. In order to cope with such a problem, the present embodiment includes a protective cover 11 made of a hard synthetic resin that wraps around the lid 7, and the lid from the outside of the protective cover 11 in order to open the liquid extraction opening 2. The lid 7 cannot be turned even if the cover 7 is reversed and removed. 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. The upper and lower ends of the cover bodies 12 and 13 have plate portions 12d and 13d that contact the upper shoulder portion 7d of the lid body 7 so as to sandwich the lid body 7 from above and below, and plate portions 12e that contact 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, when the coupling between the concave portions 12b, 13b of the insertion pieces 12a, 13a and the locking pieces 13c, 12c is removed, either of the insertion pieces 12a, 13a is cured inward at any position of the window portions 12g, 13g. The insertion piece 12a, 13a and the locking piece 13c, 12c can be uncoupled by pressing strongly with a tool. However, this operation eliminates the liquid inside the container 1, and the liquid is again put into the container 1. This is performed when the lid 7 is removed from the cylindrical portion 4 in order to inject. That is, even if it is attempted to open the lid 7 in order to take out the liquid in the container 1 unnecessarily, the lid 7 cannot be opened without removing the protective cover 11 without breaking without an appropriate jig. .

  In addition, in order to take out the liquid in the container 1 with the cover 7 covered with the protective cover 11, the tube 10 is pulled out from the container 1, and the container 1 is tilted to draw the liquid from the liquid outlet 2. Even if it is going to be taken out, since the 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, the valve plate is caused by the internal pressure of the liquid. 8c closes the liquid outlet 7b and the air hole 7c from the inside, and 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.

  Further, when the container 1 is tilted or falls due to a person's foot getting stuck in the container 1, the lid 7 is made of silicon or rubber so as to overlap the lower surface of the upper end plate portion 7a as described above. Since the flexible valve body 8 is provided, the valve plate 8c closes the liquid outlet 7b and the air hole 7c from the inside due to the internal pressure of the liquid, and the liquid in the container 1 may spill out. Absent.

  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.

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 structure of a liquid container in which a lid made of a synthetic resin is screwed into a cylindrical portion that is an opening for taking out the liquid of the liquid container, and the liquid is sucked into the upper end plate portion of the lid There is a liquid outlet for inserting a tube, and the inside of the lid is made of silicon or rubber so that it overlaps the lower surface of the upper end plate. And a circular valve plate that opens and closes the liquid outlet port of the upper end plate portion of the lid from the lower side, and is connected by a single connecting portion that exists within the range surrounded by the outer peripheral portion and can be bent at the outer peripheral portion. A liquid body characterized in that an O-ring packing is provided inside the lid body so as to sandwich the outer periphery of the valve body between the upper end plate portion of the lid body. The lid structure of the storage body.

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