JP4379566B2 - Pouring cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin pouring cap which is assembled to a casing and can be easily separated from the casing at the time of disposal.
[0002]
[Prior art]
As a conventional example of this type of dispensing cap, one described in Utility Model Registration No. 2596699 is known.
[0003]
The pouring cap described in this gazette is provided with a longitudinal weakening line extending from the upper end to the lower end in the vicinity of one end of the hinge on the cylinder with which the cap body is fitted to the outer periphery of the casing mouth tube. The top plate of the main body is constructed by providing a continuous circumferential weakening line on the top of the weakening line, and at the time of disposal, the two weakening lines are broken by pulling a lid that is integrally connected via a hinge. The entire cap is removed from the housing mouthpiece and separated.
[0004]
In general, a synthetic resin pouring cap is integrally formed of a relatively hard synthetic resin such as polypropylene because it requires assembly strength with respect to the casing, strength of the hinge portion, and durability.
[0005]
[Problems to be solved by the invention]
However, as in the prior art described above, when a cap with a weakening line for separation fracture is integrally formed with a hard synthetic resin such as polypropylene, the strength and durability required for the cap However, since the weakening line is difficult to break, a large operating force is required to break the weakening line at the time of disposal, and the separation work cannot be performed quickly and smoothly.
[0006]
Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, and the breakage of the weakening line at the time of sorting and disposal is reduced without reducing the strength and durability required for the dispensing cap. It is an object of the present invention to make it easy to operate with an operating force, and thus to easily and quickly achieve the separation of the dispensing cap.
[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:
The bottom half of the assembled cylinder that has a spout at the top and is externally fitted to the housing mouth tube is divided into a plurality of engaging pieces that are undercut coupled to the housing mouth cylinder, and The outer ring is connected to the outer ring by connecting the lower end to the lower end of the engaging piece and a fitting portion is formed between the assembled cylinder and the outer ring. A relatively soft synthetic resin cap body provided with a thin weakening line capable of vertically breaking the outer ring by a handle piece, and a locking projection protruding from the upper end of the rear surface of the assembled cylinder. thing,
The upper end of the rear part of the tightening ring that is fixedly inserted into the fitting part of the cap body, and that is provided with a sliding concave part with the locking convex part of the cap main body slidable in the vertical direction and with the bottom surface as the locking surface. And having a relatively hard synthetic resin lid that is connected to the upper lid for opening and closing the spout of the cap body with a hinge,
It is in.
[0008]
To remove the dispensing cap, first pull the handle piece of the outer ring of the cap body to break the weakening line and various connecting pieces, thereby separating or substantially separating the outer ring from the assembled cylinder, and then the upper lid of the lid By pulling up, the rear part of the tightening ring is pulled up so that the locking surface at the lower end of the slide concave part is brought into contact with and locked to the locking convex part of the cap body (see FIG. 3). When pulled up, the engagement piece at the lower part of the assembled cylinder easily elastically deforms outward and overcomes the engagement protrusion of the casing mouth cylinder, so that the lid body and the cap body are integrated into the casing mouth cylinder. Easily leave.
[0009]
The invention according to claim 2 is obtained by adding the structure of the invention according to claim 1 to that the cap body is made of low density polyethylene resin and the lid is made of polypropylene resin.
[0010]
In the invention of claim 2, since the cap body is made of low-density polyethylene resin, it is possible to stably obtain a high sealing property, and the lid is made of polypropylene resin, so it has a strong hinge function In addition to being able to obtain a part, the exterior of the fastening ring with respect to the assembled cylinder of the cap body effectively functions as a heat-resistant heat cap.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The pouring cap is composed of a cap main body 1 assembled to the housing mouthpiece 30 and a lid 20 having a separate structure assembled to the cap main body 1.
[0012]
The cap body 1 integrally molded with a relatively soft synthetic resin material such as low-density polyethylene resin has a top plate 5 continuously provided on the inner side of the upper end of the assembled cylinder 2 that is fitted to the outer periphery of the casing mouth cylinder 30. A seal cylinder 6 that is in close contact with the inner peripheral surface of the housing mouth cylinder 30 is suspended inside the bottom surface of the top plate 5, and a dispensing cylinder piece 7 that forms a spout 8 is erected inside the top surface of the top plate 5. Has been.
[0013]
The bottom surface of the spout 8 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 the removal wall portion 11 has a pull ring 12 integrally provided on the upper surface thereof. By pulling up at the time of use, it is broken and removed at the breaking groove 10 portion.
[0014]
The substantially lower half of the assembled cylinder 2 of the cap body 1 is divided and formed through a split groove on a plurality of engagement pieces 3 provided with engagement protrusions for undercut coupling on the inner peripheral surface. The body mouth tube 30 is undercut coupled by these engagement pieces 3 (see FIG. 2).
[0015]
Further, an outer ring 13 is provided around the assembled cylinder 2 by connecting a lower end portion thereof to a lower end portion of each engaging piece 3 by a plurality of breakable connecting pieces 4. The insertion part 14 is formed between the two.
[0016]
A grip portion 15 is left remaining in a part of the outer ring 13 by notching a U-shaped slit 16, and from the rear end of the upper portion of the slit 16 to the upper end of the outer ring 13 and the slit 16. A thin groove-like weakening line 17 is formed in an inclined shape from the rear end of the lower portion to the lower end of the outer ring 13 (see FIG. 1).
[0017]
A locking projection 18 that acts as a stopper projects from the upper end of the rear surface of the assembled cylinder 2.
[0018]
The lid 20 integrally molded with a relatively hard synthetic resin such as polypropylene resin is fixedly fitted into the fitting portion 14 of the cap body 1 by undercut coupling, and the assembled cylinder 2 is firmly attached to the casing mouth cylinder 30. An upper lid 25 that opens and closes the spout 8 of the cap main body 1 is connected to a rear upper end of the tightening ring 21 to be attached to the hinge ring 24 by a hinge 24.
[0019]
The immovable fitting assembly with respect to the fitting portion 14 of the tightening ring 21 of the lid 20 is achieved by an undercut connection between the upper end portion of the inner peripheral surface of the outer ring 13 of the cap body 1 and the upper end portion of the outer peripheral surface of the tightening ring 21. Therefore, when the outer ring 13 is separated or substantially separated from the assembled cylinder 2, the undercut coupling of the tightening ring 21 to the cap body 1 is released, and the tightening ring 21 can be displaced with respect to the cap body 1. .
[0020]
On the inner surface of the top wall of the upper lid 25, a plug cylinder piece 26 is provided so as to be in close contact with the inner peripheral surface of the extraction cylinder piece 7 of the cap body 1 in the closed state of the cap body 1 and seal the outlet 8. .
[0021]
Further, at the rear part of the inner peripheral surface of the tightening ring 21, a locking convex portion 18 of the assembled cylinder 2 is accommodated so as to be slidable in the vertical direction, and a slide concave portion 22 having a lower surface as a locking surface 23 is formed.
[0022]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
In the first aspect of the present invention, the lid having a fastening ring and a hinge that are externally fitted to an assembled cylinder having a substantially lower half divided into a plurality of engaging pieces is made of a relatively hard synthetic resin. As a result, the cap body can be firmly attached to the casing mouthpiece, and the strength and durability of the hinge can be maintained well, and the cap body can be directly attached to the casing mouthpiece. Since it is made of a relatively soft synthetic resin, the sealing performance against the housing is also kept good.
[0023]
In addition, since the cap body having the outer ring that is broken and separated at the time of separation and removal is made of a relatively soft synthetic resin, the weakened wire and the connecting piece can be easily broken with a small operating force. Since the lower part of the attached cylinder is divided into elastically deformable engagement pieces, the assembled cylinder can be easily detached from the housing mouth cylinder, so that the dispensing cap can be easily and quickly removed smoothly. Can be achieved.
[0024]
In the invention according to claim 2, the fastening ring of the lid made of polypropylene resin, which effectively exhibits excellent sealing properties and high strength as a hinge cap, and has excellent heat resistance, is a cap body. Therefore, when the contents are heat-filled, generation of heat deformation of the cap body-attached cylinder is strongly prevented, thereby effectively functioning against the heat filling of the contents.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
2 is a vertical side view showing an assembled state of the embodiment shown in FIG. 1; FIG.
FIG. 3 is a vertical side view showing the cap removed state of the embodiment shown in FIG. 1;
[Explanation of symbols]
1; Cap body 2; Assembly cylinder 3; Engagement piece 4; Connection piece 5; Top plate 6; Seal cylinder 7; Outlet cylinder piece 8; Outlet 9; Mouth wall 10; Breaking groove 11; Pull ring 13; Outer ring 14; Insertion part 15; Handle part 16; Slit 17; Weak line 18; Locking convex part 20; Lid 21; Tightening ring 22; Slide concave part 23; ; Plug piece 30;

Claims (2)

A plurality of members having a spout (8) at the top and undercut coupling the substantially lower half of the assembled cylinder (2) fitted on the casing mouthpiece (30) to the casing mouthpiece (30). The lower end is connected to the lower end of the engaging piece (3) by a plurality of breakable connecting pieces (4) on the outer side of the assembled cylinder (2). Then, an outer ring (13) is provided around to form a fitting portion (14) between the outer tube (2) and the outer ring (13) is formed by a grip piece (15). A relatively soft synthetic resin provided with a thin weakening line (17) that can be vertically broken (13), and a protruding projection (18) protruding from the upper end of the rear surface of the assembled cylinder (2). A cap body (1) made of metal and fixedly inserted into the insertion portion (14), and the rear surface of the inner peripheral surface accommodates the locking projection (18) so as to be slidable in the vertical direction, and the lower surface is a locking surface ( Open and close the spout (8) at the upper end of the rear part of the clamping ring (21) provided with the slide recess (22) as shown in (23). (25) and hinged (24), pouring cap consists of a relatively rigid synthetic resin lid (20). The pouring cap according to claim 1, wherein the cap body (1) is made of low density polyethylene resin and the lid (20) is made of polypropylene resin.

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