JP2012051577A - Synthetic resin-made lid device - Google Patents

Abstract

A hinge cap type lid device having an improved sealing function is provided.
A lid device includes a main body and a cap. The cap 2 is connected to the main body 1 by hinges 3 and 4, and is sealed by surrounding a tab 15 provided at the free end of the cap 2 with an engaging portion 18. The engaging part 18 has an upper cover 19 and an enclosure wall 20, and the enclosure wall 20 is connected to the main body 1 via left and right bridge parts 22. The upper cover 19 extends to the base of the tab 15, and the surrounding wall 20 projects downward from the bridge portion 22. Since it is difficult to cause the upper cover 19 to access the tab 15, the sealing function is excellent.
[Selection] Figure 1

Description

  The present invention relates to a lid device made of a synthetic resin used for containers (bottles, bottles) for packaging liquids such as liquid seasonings and edible oils, and more specifically, a sealing function (pill fur proof function, anti-tamper function, The present invention relates to a hinge cap type lid device having an unauthorized opening prevention function.

  In a hinge cap type lid device, an engaging portion (a locking portion or a sealing portion) is provided so that the fact can be visually recognized when it is illegally opened in the distribution stage. Examples thereof include Patent Documents 2 and 3, and the engaging portions of these Patent Documents 2 and 3 have an upper cover portion that overlaps the tab and a wall portion that is positioned outside the tab, and are inverted L-shaped in a longitudinal side view. The lower end of the wall part is connected to the main body via the bridge part. Further, the bridge portion is close to the step portion (overlapping surface) where the cap overlaps in the main body, and therefore, the wall portion is mostly located above the step portion of the main body.

CD-ROM of Japanese Utility Model Hei 5-35707 JP 2010-13113 A

  In Patent Documents 1 and 2, the sealing portion is released by tilting the engaging portion downward and cutting the bridge portion, but there is a possibility that the engaging portion can be elastically deformed until the tab is released. For this reason, the sealing function (tamper prevention function, unauthorized opening prevention function) may be incomplete. The present invention has been made to improve the current situation.

  In the lid device of the present invention, a cap that covers the main body from above is connected to a pull-open type main body that is attached by force fitting to the mouth of the container via a hinge. While the free end portion is provided with a tab for a person to hang a finger on, the engaging portion that holds the tab of the cap immovably upward is formed integrally with the main body in a breakable state. Basic configuration.

  And in invention of Claim 1, the said engaging part has the upper cover which covers the tab of the said cap from the top, and the surrounding wall extended downward continuously to the outer periphery of the said cover board, In the configuration in which the enclosure wall or the upper cover is connected to the main body via a weakened portion that can be shredded, the upper wall of the engaging portion covers the base of the tab, while the enclosure wall is It protrudes below the vulnerable part.

  According to a second aspect of the present invention, in the first aspect, one end and the other end of the surrounding wall that face in the circumferential direction are projecting portions projecting to the outside of the upper cover, and the pair of projecting portions are the It is connected to the main body via a bridge portion as an example of the fragile portion. According to a third aspect of the present invention, in the second aspect of the present invention, a downward opening groove is formed in the surrounding wall of the engaging portion to partition the protruding portion.

  In the present invention, the seal cannot be released unless the fragile portion is cut off by pulling the enclosure wall or the upper cover. And since the tab is almost entirely covered with the upper cover, if you try to remove the tab from the upper cover without cutting through the fragile parts, turn the upper cover toward the outside of the main body (the direction away from the axis of the main body). If you want to raise the upper cover to the outside of the main body because the enclosure wall protrudes below the fragile part, you may not be able to raise the upper cover because the lower end of the enclosure wall hits the outer peripheral surface of the main body Is most.

  Accordingly, it is impossible or impossible almost to pull up the tab by raising the upper cover to the outside of the main body within the elastic deformation limit of the engaging portion. In other words, unless the fragile portion is broken, the tab cannot be exposed and the finger cannot be hung. As a result, the sealing function can be improved.

  If the structure of Claim 2 is employ | adopted, a bridge | bridging part can be shredded by applying a finger | toe to an overhang | projection part and raising the said overhang | projection part or pulling an overhang | projection part. That is, the overhanging portion functions as a tab for pulling and cutting the bridge portion, so that the seal can be easily released (opened). In this case, it is more preferable to form the downward opening groove as in claim 3 to separate the overhanging portion, since the overhanging portion is easily deformed and can reduce the contact with the finger.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st Embodiment, (A) is a perspective view in a cap closed state, (B) is a side view in a half open state, (C) is a CC view longitudinal cross-sectional view of (A). is there. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st Embodiment, (A) is a partial top view in the open state, (B) is BB sectional drawing of (A), (C) is CC view front of (A). FIG. 4D is a cross-sectional view taken along the line IID-IID in FIG. (A) is a principal part top view of 2nd Embodiment, (B) is BB sectional drawing of (A), (C) is a top view of the modification of 2nd Embodiment, (D) is 3rd. A principal part top view of an embodiment and (E) are EE views sectional views of (D).

  Next, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the words “front and rear” and “left and right” are used for convenience to identify the direction. These front and rear, left and right are opposed to the tab with the cap closed, as shown in FIG. This state is regarded as a front view and is based on this state. In addition, since the lid device is a single molded product, the hatching of the cross-sectional display of the drawing should be drawn in the same manner throughout, but for the sake of convenience, the hatching direction is changed between the main body and the cap for the sake of convenience. Yes.

(1) Structure of the First Embodiment The lid device is composed of a main body 1 and a cap 2, and both are integrally connected via one center hinge 3 and two side hinges 4. The main body 1 includes an outer cylinder 6 that fits into the mouth 5 of the container from the outside, an inner cylinder 7 that fits into the mouth 5 of the container from the inside, a spout 8 that is integrated with the upper end of the inner cylinder 7, And a closing plate 9 that seals the extraction passage at the boundary between the cylinder 7 and the outlet 8. An annular engagement groove 5 a is formed on the outer surface of the mouth portion 5 of the container, while an annular protrusion 6 a that fits with the annular engagement groove 5 a is formed on the outer cylinder 6 of the main body 1.

  The upper ends of the outer cylinder 6 and the inner cylinder 7 are integrally continuous via a step portion 10, and an upward ring portion 11 surrounding the spout 8 is formed in the step portion 10. As shown in FIG. 1 (B), the spout 8 is stepped so that a half portion near the hinges 3 and 4 is lowered. A loop-like score (thin wall portion) 12 is formed on the closing plate 9, and a pull ring (pull tab) 13 is integrally provided at the end of the portion surrounded by the score 12. Needless to say, the content (liquid) can be poured out by pulling the pre-ring 13 and tearing off the portion of the score 12.

  The cap 2 includes a cylindrical portion and a top plate so as to overlap the stepped portion 10 of the main body 2 in a closed state, and the top plate is provided with a middle foot 14 that fits into the spout 8 from the inside. Further, a tab 15 is projected from a free end portion of the cap 2 that is located on the opposite side of the hinges 3 and 4 across the axis. On the lower surface of the tab 15, a rib for improving finger catching is formed.

  An engaging portion 18 that surrounds the tab 15 of the cap 2 is integrally formed at an end portion (front portion) on the opposite side of the hinges 3 and 4 with the shaft center interposed in the main body 1. The engaging portion 18 includes an upper cover (horizontal portion) 19 that covers the tab 15 from above, and an enclosure wall 20 that protrudes downward and continues to the outer peripheral edge of the upper cover 19.

  The upper cover 19 and the surrounding wall 20 extend in the circumferential direction. The upper cover 19 has a left and right length that completely covers the tab 15, and covers the base of the tab 15 with the upper cover 19. Therefore, a person cannot put a finger or a nail on the rear end surface of the upper cover 19. On the upper surface of the tab 15, an inclined guide surface 15 a that is inclined downward toward the inward leading end surface is formed. Accordingly, when the lid device is manufactured and then set to the closed state, the tab 15 is smoothly drawn below the upper cover 19.

  The surrounding wall 20 protrudes outward from the left and right ends of the upper cover 19. That is, the surrounding wall 20 has an overhanging portion 20 a that protrudes from the left and right outer sides of the upper cover 19. In this case, the overhanging portion 20 a is separated from another portion (base portion) of the surrounding wall 20 by the downward opening groove 21, and the overhanging portion 20 a protrudes downward from the other portion of the surrounding wall 20. For this reason, a person easily raises the overhanging portion 20a with a finger.

  A pair of left and right bridge portions 22 connected to the outer peripheral surface of the outer cylinder 6 in the main body 1 is formed in a portion of the enclosure wall 20 located on the left and right inner sides of the downward opening groove 21 and on the left and right outer sides than the upper cover 19. . That is, the portions near the left and right ends of the enclosure wall 20 are integrally connected to the main body 1 via the bridge portion 22. As a matter of course, the bridge portion 22 has a strength capable of being shredded.

  As can be understood from FIG. 2B, the bridge portion 22 is connected to the upper end of the outer peripheral surface of the outer cylinder 6 in the main body 1. Further, since the bridge portion 22 is located on the left and right outer sides of the upper cover 19, the die is easily removed in manufacturing the lid device by injection molding using a mold (not to mention, the lid device). Is molded with the cap 2 open.). A recess 23 is formed in a portion below the tab 15 in the outer peripheral surface of the outer cylinder 6 in the main body 1, and the bridge portion 22 is disposed on the left and right outer sides of the recess 23.

  The enclosure wall 20 protrudes greatly below the bridge portion 22, and in the present embodiment, extends to the vicinity of the lower end of the recess 23. More specifically, the dimension L1 that the enclosure wall 20 projects downward from the bridge portion 22 is substantially equal to or larger than the inward projecting dimension L2 of the upper cover 19. In view of the sealing function, the downward projecting dimension L1 of the enclosure wall 20 is preferably as large as possible, and the lower end of the outer cylinder 6 is shown by a two-dot chain line in FIGS. 1 (C), 2 (B) and 2 (C). It is also possible to extend to the vicinity and set L1 to, for example, 1.5 times or more of L2.

(2). Summary of First Embodiment As described above, the lid device 1 is molded (manufactured) with the cap 2 opened. Then, when the cap 2 is closed, the tab 15 is fitted below the upper cover 19 against the elasticity of the engaging portion 18 and is in a sealed state. For example, as a fraudulent act in the distribution stage, it is conceivable to try to pry open the tab 15 by putting a finger on the inner periphery of the upper cover 19 and pulling it outward, but the upper cover 19 is close to the base of the tab 15. Alternatively, because of the close contact, it is impossible to put a finger on the inner peripheral edge of the upper cover 19 and it is difficult to raise the upper cover 19.

  In addition, as indicated by an arrow X in FIG. 1C, it may be possible to raise the upper cover 19 outwardly by pushing the enclosure wall 20 toward the main body 1. Since the upper cover 19 cannot be lifted outward by holding the lower end of the body 20 on the outer peripheral surface of the main body 1, the upper cover 19 cannot be pry open to expose the tab 15.

  In any case, the pressing of the tab 15 by the upper cover 19 cannot be released unless the bridge portion 22 is cut, and therefore, the sealing function is excellent. To release the sealing, for example, a fingertip may be inserted between the overhanging portion 20a and the main body 1, and the bridge portion 22 may be cut off by raising the overhanging portion 20a. If one bridge part 22 is cut off, the other bridge part 22 can be easily cut off by picking and pulling the premise of the engaging part 18 with a finger. The bridge portion 22 can be cut off by putting a finger into the surrounding wall 20 from below and raising the entire surrounding wall 20 upward.

  When the overhanging portion 20a is separated from other parts via the downward opening groove 21 as in the present embodiment, the overhanging portion 20a is easily deformed, and therefore, when the overhanging portion 20a is raised and operated by the fingertip, There is an advantage that it can be softened and opened easily. Further, when the overhanging portion 20a is protruded downward from other portions as in the present embodiment, the area where the overhanging portion 20a hits the fingertip can be increased. I can do it.

  In the present embodiment, the downward opening grooves 21 are formed at both left and right ends of the surrounding wall 20, but can be formed only on either one of the left and right sides. Further, as shown by a two-dot chain line in FIG. 1 (B), the protruding portion 20a can be made to protrude long along the circumferential direction, so that it can be formed as a knob piece 20b. The knob 20b can be provided only at one of the left and right ends of the surrounding wall 20.

  As indicated by a two-dot chain line in FIG. 2C, it is possible to cut the bridge portion 22 by raising the surrounding wall 20 upward without providing the overhang portion 20a. In this case, the inner peripheral edge of the upper cover 19 is applied to the outer periphery of the cap 2 to raise the surrounding wall 20, so that the bridge portion 22 can be cut off by the lever principle.

(3). Other Embodiments Next, another embodiment shown in FIG. 3 will be described. These can be said to be modifications of the first embodiment, and in the second embodiment of (A) and (B), the restriction portion 25 inwardly protrudes toward the main body 1 at the lower ends of the left and right intermediate portions of the enclosure wall 20. It is protruding. The upper cover 19 has a through hole 26 surrounding the restricting portion 25 in a plan view. The punching hole 26 is for facilitating die cutting when molding using a mold.

  If the restricting portion 25 is provided at the lower end portion of the enclosure wall 20 in this manner, it is almost impossible to tilt the enclosure wall 20 toward the main body 1, and as a result, it is almost impossible to cause the upper cover 19. As a result, the sealing function is made more reliable. The restricting portion 25 protrudes below the enclosure wall 20. A slit groove that opens inward may be formed instead of the through hole 26 (in this case, the upper cover 19 is divided into left and right). As shown in FIG. 3C as a third embodiment, it is possible to form a plurality of regulating portions 25 and a plurality of through holes 26.

  In the fourth embodiment shown in FIGS. 3D and 3E, the restricting portion 25 is disposed on the left and right outer sides of the upper cover 19 and on the left and right inner sides of the bridge portion 22. In the present embodiment, since the upper portion of the restricting portion 25 is open, the insertion hole 26 as in the second embodiment is not necessary.

  As a modification of the fourth embodiment, the restricting portion 25 can be integrally connected to the left and right end portions of the upper cover 19. In this case, the rigidity of the engaging portion 18 is remarkably increased. As another modification of the fourth embodiment, as shown by a one-dot chain line in FIG. 3 (E), the restricting portion 25 can be formed into a thin shape and can be integrally connected to the main body 1. In this case, the restricting unit 25 functions as a bridge unit.

(4). Others The specific example of the present invention is not limited to the above-described embodiment, and can be variously embodied. For example, the fragile portion is not necessarily a bridge portion, and for example, a thin score or a perforated structure can be adopted.

  The present invention is embodied in a hinge cap type lid device and exhibits its usefulness. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Main body 2 Cap 3, 4 Hinge 6 Main body outer cylinder 7 Main body inner cylinder 8 Spout 9 Closure plate 13 Pull ring 15 Cap tab 18 Engagement part 19 Upper cover 20 Enclosure wall 20a Overhang part 21 Downward opening groove 22 Bridge part 25 Restriction part 26

Claims (3)

A cap that covers the main body from above is connected to a pull-open type main body that is attached to the mouth of the container by forced fitting, and a finger is placed on the free end of the cap opposite to the hinge. On the other hand, the main body is formed integrally with the main body in a state in which an engaging portion that holds the tab of the cap so as not to move upward is breakable.
A synthetic resin lid device,
The engaging portion includes an upper cover that covers the tab of the cap from above, and an enclosure wall that extends downward continuously from the outer peripheral edge of the cover plate, and the enclosure wall or the upper cover can be shredded. Connected to the main body via a vulnerable part,
In the configuration
While the upper cover of the engaging part is covered to the base of the tab, the enclosure wall protrudes below the fragile part,
Synthetic resin lid device. One end and the other end of the surrounding wall that face in the circumferential direction are projecting portions that protrude to the outside of the upper cover, and the pair of projecting portions is a main body via a bridge portion as an example of the fragile portion. Connected to
The synthetic resin lid device according to claim 1. A downward opening groove that divides the protruding portion is formed in the surrounding wall of the engaging portion.
The synthetic resin lid device according to claim 2.

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