JP3785494B2 - Hinge cap with unauthorized opening prevention function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin hinge cap having an unauthorized opening prevention function that is assembled to a housing and achieves opening and closing of the housing.
[0002]
[Prior art]
As a representative example of a hinge cap having an unauthorized opening prevention function, one disclosed in Japanese Utility Model Publication No. 63-166554 has been known.
[0003]
The hinge cap described in this publication is configured such that a cap that is removably crowned on the top of the stopper body is attached to one side of the stopper body having a content outlet fitted to the mouth of the container via the hinge part. In the integrally formed spigot made of synthetic resin, a strip is integrally formed on the outer periphery of the plug body, facing the plug body with a gap and connected to the plug body at both ends. A hooking claw that is inserted between the strip and the plug body when the plug body is crowned is integrally formed, and the hooking claw of the inserted cap is hooked on the band of the plug body. Thus, a latching portion that prevents the latching claw from being pulled upward and a cover portion that covers the outer periphery of the latching claw are formed.
[0004]
[Problems to be solved by the invention]
However, in the above-described prior art, not only the structure of the strips and the latching claws constituting the locking portion for preventing unauthorized opening is complicated, but also the latching portions of the strips and the latching claws When locking and assembling by climbing over the claw part, it is required that the strip is rotated and displaced to get over the claw part of the latching part. Since the displacement axis is provided by forcibly bending deformation of the plug body connecting portion, there is a problem that the plug body connecting portion is likely to be broken or the like before the unauthorized opening prevention function is exhibited. .
[0005]
Also, in the above-mentioned locked state, the hooking claw is simply locked to the hooking part of the strip from below, so that the hooking part and the hooking part are unlocked illegally. When trying to do so, it is only necessary to bend and displace the band piece outward as long as the latching part and the claw part are unlocked, and the problem of preventing unauthorized opening is not necessarily sufficient. was there.
[0006]
Therefore, the present invention was devised to solve the above-described problems in the prior art, so that the engagement with the other of the functional parts for preventing unauthorized opening can be achieved without requiring deformation. Therefore, it is an object of the present invention to make the locking and assembling operation simple and safe and to exhibit a reliable function of preventing unauthorized opening.
[0007]
[Means for Solving the Problems]
Among the present invention for solving the above technical problems, the means of the invention according to claim 1 is:
A hinge cap comprising: a cap body assembled to the housing mouthpiece; and a lid that is coupled to the cap body with a hinge and has a finger-hanging piece protruding from the opposite side of the hinge.
An engagement piece that has substantially the same planar shape and size as the finger-hanging piece and that makes the upper surface substantially in close contact with the lower surface of the finger-hanging piece in a closed position is attached to the upper end of the outer peripheral surface of the cap body via a thin broken piece. To be integrated,
An engaging protrusion projectingly provided on one of the upper surface of the engaging piece of the cap body and the lower surface of the finger hooking piece of the lid, and an engaging hole into which the entire engaging projecting piece is fitted and engaged is provided on the other;
Providing a locking function portion that exerts a strong resistance to pulling out of the engagement protrusion from the engagement hole on the peripheral surface of the engagement protrusion and the peripheral surface of the engagement hole;
It is in.
[0008]
According to the second aspect of the present invention, the locking function portion of the first aspect of the present invention is configured with a strong elastic contact structure.
[0009]
The invention described in claim 3 is configured such that the locking function portion of the invention described in claim 1 has an undercut coupling structure.
[0010]
According to a fourth aspect of the present invention, the locking function portion of the first aspect of the present invention is constituted by a large number of fine concavo-convex structures.
[0011]
In the state before the cap is opened, the engagement protrusions and the engagement holes provided in the engagement pieces of the cap body and the finger-hanging pieces of the lid body are firmly engaged via the locking function portion, and the lid Blocking the opening of the body.
[0012]
When the lid is first opened from this sealed state, the broken piece is broken and the engaging piece is separated from the cap body, and then the lid is rotated in the opening direction. Since it is preliminarily molded with a strength that can be broken by the opening operation force, a normal opening force is applied to the lid body from the beginning, and the lid body is rotated in the opening direction while breaking the broken pieces.
[0013]
In any case, in order to open the lid for the first time, it is necessary to break the broken piece. Can be easily and accurately identified.
[0014]
In addition, the locking attachment of the finger hooking piece of the lid to the engaging piece of the cap main body simply requires the engaging protrusion to be fitted into the engaging hole by closing the lid, so that the tensile force is applied to the broken piece. Such an unreasonable force is not applied, and the broken piece is not damaged at all at the time of locking and assembling.
[0015]
Furthermore, the engagement piece and the finger-hanging piece are formed in substantially the same planar shape and size, and are in close contact with each other in a state where the engagement protrusion and the engagement hole are firmly engaged by the engagement function portion. Therefore, it is impossible to release the lid body by releasing the finger-hanging piece from the engaging piece without breaking the broken piece, and thus it is possible to reliably prevent unauthorized opening.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 show a first embodiment of the present invention. A hinge cap is connected to a cap body 1 assembled to a casing mouth tube and a rear end of the cap body 1 via a hinge 18. And the lid body 13.
[0017]
The cap body 1 is provided with a seal cylinder 6 that is in close contact with the inner peripheral surface of the casing mouth tube through the top plate 5 inside the assembled cylinder 2 that is fitted to the outer periphery of the casing mouth cylinder. On the inner surface of the top plate 5, a pouring cylinder piece 7 forming a pouring outlet is provided, and on the outer side, a fitting cylinder piece 8 on which the peripheral wall 15 of the lid 13 is detachably fitted is erected.
[0018]
The bottom surface of the spout of the cap body 1 is closed by a mouth wall 9 having an inner portion of the breaking groove 10 as a removal wall portion 11, and this removal wall portion 11 uses a pull ring 12 integrally provided on the upper surface. By pulling up sometimes, it is broken and removed at the breaking groove 10 portion.
[0019]
On the upper front end of the outer peripheral surface of the assembled cylinder 2 of the cap body 1, a plane substantially crescent-shaped engagement piece 3 is integrally provided via thin broken pieces 4 on both side ends thereof. A cylindrical engagement protrusion 19 is erected on the upper surface of 3.
[0020]
The lid 13 is integrally provided with a finger hanging piece 16 formed in substantially the same planar shape and size as the engaging piece 3 of the cap body 1 at the lower front end of the peripheral wall 15, and on the lower surface of the finger hanging piece 16. Is provided with an engagement hole 20 into which the entire engagement protrusion 19 is firmly fitted and engaged (see FIG. 3).
[0021]
On the inner surface of the top wall 14 of the lid 13, a plug cylinder piece 17 is provided so as to close the spout in close contact with the inner peripheral surface of the extraction cylinder piece 7 when the lid 13 is closed.
[0022]
The engagement projecting piece 19 and the engagement hole 20 have an outer diameter and an inner diameter that exert a strong resistance to the engagement projecting piece 19 being pulled out by strong elastic contact between the peripheral surfaces of the engagement projecting piece 19 and the engagement hole 20. The locking function part 21 is configured.
[0023]
In the second embodiment of the present invention shown in FIG. 4, the locking function portion 21 is configured by an undercut coupling structure, and a bulging portion 22 is provided around the distal end side of the outer peripheral surface of the engagement protrusion piece 19. The narrow portion 23 is formed on the opening side of the inner peripheral surface of the engagement hole 20, and the engagement protrusion 19 is prevented from coming out by locking the narrow portion 23 and the bulging portion 22.
[0024]
Further, in the third embodiment shown in FIG. 5, the locking function portion 21 is configured by a large number of fine irregularities 24, and is formed on the entire outer peripheral surface of the engaging protrusion 19 and the entire inner peripheral surface of the engaging hole 20. A large number of fine irregularities 24 are formed to have a rough surface structure, and the strong frictional resistance between the rough surfaces prevents the engagement protrusion 19 from coming out of the engagement hole 20.
[0025]
It should be noted that the present invention may have a configuration opposite to the above-described embodiments, that is, a configuration in which the engagement hole 3 is provided in the engagement piece 3 and the engagement protrusion 19 is protruded from the finger-hanging piece 16. It is.
[0026]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
The engagement piece and the finger-hanging piece are formed in substantially the same planar shape and size, and are in close contact with each other in a state where the engagement protruding piece and the engagement hole are firmly engaged by the engagement function portion. Therefore, it is impossible to release the lid by releasing the finger-hanging piece from the engaging piece without breaking the broken piece, so that it is possible to reliably prevent unauthorized opening and to prevent the broken piece from breaking. By observing the presence or absence, it is possible to easily and accurately identify the presence or absence of unauthorized opening of the hinge cap.
[0027]
Since the engaging means between the engaging piece and the finger-hanging piece is composed of the engaging protrusion piece and the engaging hole having a simple structure, the engaging structure for preventing unauthorized opening is simplified, and the engaging piece The finger-hanging piece can be locked and attached to the broken piece by simply engaging the engaging protrusion with the engaging hole by a simple operation of pressing from above and below with the lid closed. An unreasonable force such as a force is not applied, and the broken piece is not damaged at the time of the locking assembly.
[Brief description of the drawings]
FIG. 1 is an overall longitudinal side view of a state before setting according to a first embodiment of the present invention.
2 is an overall plan view of a state before setting in the embodiment shown in FIG. 1; FIG.
FIG. 3 is an enlarged vertical side view of a main part in a set state in the embodiment shown in FIG. 1;
FIG. 4 is an enlarged vertical sectional side view of a main part in a set state, showing a second embodiment of the present invention.
FIG. 5 is a side view of an enlarged longitudinal section of an essential part in a set state showing a third embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1; Cap main body 2; Assembly cylinder 3; Engagement piece 4; Broken piece 5; Top plate 6; Seal cylinder 7; Outlet cylinder piece 8; Insertion cylinder piece 9; Mouth wall 10; Breaking groove 11; 12; Pull ring 13; Lid 14; Top wall 15; Peripheral wall 16; Finger hook piece 17; Plug piece 18; Hinge 19; Engagement protrusion piece 20; Engagement hole 21; Locking function part 22; Narrow part 24; unevenness

Claims (4)

The cap main body (1) assembled to the housing mouth tube and the hinge (18) provided at the upper end of the outer peripheral surface of the cap main body (1) are coupled, and a finger-hanging piece for opening operation is provided on the opposite side of the hinge (18). In the hinge cap comprising the lid (13) projecting (16),
The finger hook having pieces substantially the same planar shape and size (16), in the closed position the lid (13), the upper surface to the lower surface is substantially close contact of the finger hooking piece (16), and finger hooking An engagement piece (3) that substantially overlaps the top and bottom of the piece (16) is integrally provided at the upper end of the outer peripheral surface of the cap body (1) via a thin broken piece (4).
The engaging piece (3) projecting from the engagement projection piece (19) to one of the lower surface of the top and finger rest (16), the whole engagement projection piece (19) is fitted engagement on the other The engagement hole (20) is provided, and the engagement protrusion (19) is pulled out from the engagement hole (20) on the peripheral surface of the engagement protrusion (19) and the peripheral surface of the engagement hole (20). A hinge cap with an unauthorized opening prevention function provided with a locking function part (21) that exerts a strong resistance to resistance. The hinge cap with an unauthorized opening preventing function according to claim 1, wherein the locking function portion (21) has a strong elastic contact structure. The hinge cap with an unauthorized opening preventing function according to claim 1, wherein the locking function portion (21) has an undercut coupling structure. The hinge cap with an unauthorized opening preventing function according to claim 1, wherein the locking function portion (21) is constituted by a large number of fine irregularities (24).

Images