JP2002362604A - Discharging cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a technical problem in which a weakened cutting line can be easily broken with a weak operating force when a discharging cap is wasted under its classified state without decreasing a strength and durability required for the discharging cap and further enable the pouring-out cap to be accomplished easily, rapidly and smoothly. SOLUTION: This discharging cap comprises a cap body 1 made of relative soft easy breakable synthetic resin and a lid member 20 made of relative hard synthetic resin. The cap body 1 is made such that a substantial lower half segment of an assembled cylinder 2 having a discharging port 8 at its top end and fitted outwardly at a bottle cylinder 30 is divided into and formed as a plurality of engagement pieces 3 undercut and coupled to the bottle cylinder 30 and at the same time an outer ring 13 having a pair of vertical weak lines 15 is connected outside the assembled cylinder 2 through a fitting segment 14. The lid member 20 is made such that an upper lid 25 for opening or closing the discharging port 8 is connected through a hinge 24 to an upper end of a rear segment of a fastening ring 21 immovably fitted to the fitting segment 14. The outer ring 13 is broken and the entire cap is removed from the bottle cylinder 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap made of synthetic resin which is assembled to a bottle and can be easily separated from the bottle at the time of disposal.

[0002]

2. Description of the Related Art As a conventional example of this kind of pouring cap,
One described in Utility Model Registration No. 2596699 is known.

[0003] In this prior art dispensing cap, a vertical weakening line is provided from the upper end to the lower end near one side end of a hinge on the assembled cylinder of the cap body fitted on the outer periphery of the bottle mouth cylinder. At the same time, on the top plate of the cap body, a continuous circumferential weakening line is provided above the weakening line, and at the time of disposal,
By pulling a lid integrally connected via a hinge, both lines of weakness are broken, and the entire cap is removed from the bottle barrel and separated.

[0004] In general, a synthetic resin pouring cap is
Since the assembly strength to the bottle, the strength of the hinge part, and the durability are required, it is integrally formed of a relatively hard synthetic resin such as polypropylene.

[0005]

However, according to the prior art described above, when a pouring cap provided with a weakening line for separating and breaking on the cap body is integrally molded with a hard synthetic resin such as polypropylene, While the strength and durability required for the cap are satisfied, the weakening line is hard to break, so a large operating force is required to break the weakening line at the time of sorting and disposal, and this sorting work should be performed quickly and smoothly. There was a problem that it could not be done.

Accordingly, the present invention has been made in order to solve the above-mentioned problems in the prior art, and the strength and durability required for the dispensing cap are not reduced, and the weakening line at the time of sorting and disposal is reduced. It is a technical object of the present invention to make it possible to easily perform rupture with a small operating force, and to easily and quickly and smoothly separate a discharge cap.

[0007]

Means for Solving the Problems Among the present invention for solving the above technical problems, the means according to the first aspect of the present invention has a spout at the top and is fitted to the bottle mouth cylinder. Is formed into a plurality of engagement pieces that are undercut-coupled to the bottle barrel, and a lower end of the engagement piece is formed outside the assembled cylinder by a plurality of connection pieces. The outer ring is connected to the outer ring to form a fitting portion between the outer ring and the assembling cylinder. A pair of thin lines of weakness are vertically formed on the rear end of the outer ring from the upper end to the lower end. Provided, a gap between them is formed in a broken portion, and a locking convex portion is protruded at the upper end of the rear surface of the assembled cylinder,
Having a relatively soft, easily breakable synthetic resin cap body, which is fixedly fitted into the fitting part of the cap body, and a locking projection of the cap body is assembled at the rear of the inner peripheral surface so that it can slide vertically. A slide recess having a lower surface as a locking surface is formed, and a pair of longitudinally separated portions are formed in the slide recess, and a cap ring is formed on the upper end of the connecting thin plate of a fastening ring formed in the connecting thin plate. There is a lid made of a relatively hard synthetic resin in which an upper lid for opening and closing a spout is connected by a hinge, and a break portion of the cap body is formed at a position corresponding to the connecting thin plate of the lid.

In order to separate and remove the discharge cap, first, the upper lid is pulled downward from the rear, and the connecting thin plate separated from the tightening ring at the separation portion is bent and deformed rearward.
A pair of weakening lines formed on the outer ring of the cap body is broken, the broken portion between them is turned outward (see FIG. 3), and then the upper lid is pulled up, so that the rear part of the tightening ring is pulled up to engage the lower end of the slide recess. The stop surface is brought into contact with the locking projection of the cap body (see FIG. 4), and when the upper lid is further pulled up and the rear portion of the cap body is pulled up, the engaging piece at the lower part of the assembled cylinder pushes the outer ring open. While being elastically deformed to the outside while overcoming the engagement ridge of the bottle mouthpiece, the lid body and the cap body are integrated and easily detached from the bottle mouthpiece.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the cap body is formed of low-density polyethylene and the lid is formed of polypropylene.

According to the second aspect of the present invention, the cap body can be securely assembled to the bottle mouthpiece, and the weakening line can be easily broken. , The undercut connection holding of the assembled cylinder to the bottle mouth cylinder is strong and reliable,
In addition, since the clamping ring hardly deforms thermally, it becomes possible to apply the dispensing cap to a hot-filled bottle.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. Discharge cap is bottle cap 3
The cap body 1 is assembled with the cap body 1 and a lid 20 having a separate structure is assembled with the cap body 1.

A cap body 1 integrally formed of a relatively soft, easily breakable synthetic resin such as low-density polyethylene has a top plate 5 inside the upper end of an assembled cylinder 2 fitted on the outer periphery of a bottle mouth cylinder 30. A sealing cylinder 6 which is continuously provided and which is provided on the lower surface inside the top plate 5 and which is in close contact with the inner peripheral surface of the bottle body cylinder 30, and a spout tube piece which forms a spout 8 inside the upper surface of the top plate 5. 7 is erected.

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 removing wall portion 11, and the removing wall portion 11 is integrally provided on the upper surface thereof. By pulling up the pull ring 12 at the time of use, the pull ring 12 is broken at the break groove 10 and removed.

The lower half of the assembling cylinder 2 has a plurality of engaging pieces 3 provided with engaging ridges for undercut connection on the inner peripheral surface thereof.
It is divided and formed through a split groove, and is undercut-coupled to the bottle barrel 30 by these engaging pieces 3 (see FIG. 2).

Outside the assembled cylinder 2, an outer ring 13 is provided around the lower end of each of the engagement pieces 3 by a plurality of connecting pieces 4 so as to surround the outer ring 13. Fitting part 1 between
4 are formed.

At the rear end of the outer ring 13, a pair of thin groove-shaped weakened lines 15 are formed at predetermined positions to be described later from the upper end to the lower end thereof.
(See FIG. 1).

At the upper end of the rear surface of the assembled cylinder 2, a locking projection 16 acting as a stopper is projected.

A cover 20 integrally formed of a relatively hard synthetic resin such as polypropylene is fixedly fitted into the fitting portion 14 of the cap body 1 by undercut connection, and the assembled cylinder 2 is connected to the bottle opening cylinder 30. Tightening ring 2 for secure mounting
At the rear end portion of the inner peripheral surface of the cylinder 1, a locking concave portion 16 of the assembled cylinder 2 is assembled 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. A pair of vertically long separating portions 24 is formed in the thinned tightening ring 21 portion, and a connecting thin plate 21a is formed therebetween, and the upper end of the connecting thin plate 21a is provided with the cap body 1.
The upper lid 25 for opening and closing the spout 8 is connected with a hinge 27.

In the illustrated embodiment, the separating portion 24 is in the form of a vertical slit, but may be a thin groove which can be easily broken or a slit which is partially connected by a connecting piece which is easily broken.

On the inner surface of the top wall of the upper lid 25, a stopper piece 26 that is in close contact with the inner peripheral surface of the spout cylinder piece 7 of the cap body 1 and seals the spout 8 when the upper lid 25 is in a closed state protrudes. Have been.

By forming the breaking portion 13a at a position corresponding to the connecting thin plate 21a of the tightening ring 21 fitted therein, the outer ring 13 can be easily broken by a pulling operation of the upper lid 25.

[0022]

Since the present invention has the above-described structure, the following effects can be obtained. In the invention according to claim 1, a lid having a fastening ring and a hinge externally fitted to an assembled cylinder having a substantially lower half divided into a plurality of engagement pieces,
Since it is made of a relatively hard synthetic resin, the cap body can be firmly attached to the bottle neck, and the strength and durability of the hinge can be maintained well. Since the cap body directly assembled to the cylinder is made of a relatively soft synthetic resin, the sealing performance with respect to the bottle is well maintained.

In addition, since the cap body having the outer ring that is broken at the time of separation and removal is made of a relatively soft and easily breakable synthetic resin, the weakened line can be easily broken with a small operating force. At the same time, the lower part of the assembled cylinder is divided into engagement pieces that are easily elastically deformed, so that the assembled cylinder can be easily detached from the bottle mouth cylinder, so that the dispensing cap can be easily separated and removed. It can be achieved quickly and smoothly.

According to the second aspect of the present invention, it is possible to firmly and stably obtain a tight attachment of the cap body to the bottle mouthpiece, and to provide a lid body to the cap body to the bottle mouthpiece. Can be firmly achieved and maintained, and the dispensing cap can be applied to a hot-filled bottle.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional side view showing an assembled state of the embodiment shown in FIG. 1;

FIG. 3 is a longitudinal sectional side view of the embodiment shown in FIG. 1, showing a state in which an outer ring is broken.

FIG. 4 is a longitudinal sectional side view showing a state in which a cap is removed in the embodiment shown in FIG. 1;

[Explanation of symbols]

 1; Cap body 2; Assembled cylinder 3; Engagement piece 4; Connection piece 5; Top plate 6; Seal cylinder 7; Pour-out cylinder piece 8; Outlet 9; Mouth wall 10; Breaking groove 11; Pull ring 13; Outer ring 13a; Breaking part 14; Fitting part 15; Weakened line 16; Locking convex part 20; Lid 21; Tightening ring 21a; Connecting thin plate 22; Sliding concave part 23; Locking surface 24; Separating part 25; Top lid 26; stopper piece 27; hinge 30; bottle cap

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65D 47/36 B65D 47/36 D 51/20 51/20 F term (Reference) 3E084 AA04 AA12 AA25 AA26 BA02 BA03 CA01 CB03 CC04 DA01 DB02 DB06 DB14 DB17 DC04 DC05 EA02 EB01 EB02 EB04 EC04 FA03 FA06 FC02 GA06 GB06 GB17 HA05 HB02 HC03 HD04 JA20 KA20 LA03 LB02 LB07 LD01

Claims (2)

[Claims] 1. A bottle barrel (30) having a spout (8) at the top.
A substantially lower half of the assembled cylinder (2) externally fitted to the cylinder (2) is divided into a plurality of engagement pieces (3) that are undercut-coupled to the bottle mouth cylinder (30), and the assembled cylinder (2) is formed. Outward, a plurality of connecting pieces (4) connect the lower end to the lower end of the engaging piece (3) to form an outer ring (13) around the outer ring (13). (14)
In the rear end of the outer ring (13), a pair of thin weakening lines (15) are provided in the longitudinal direction from the upper end to the lower end thereof, and a gap between the weakened lines (15a) is formed in a broken portion (13a). And the tube with the assembly
(2) A cap body (1) made of a relatively soft and easily breakable synthetic resin having a locking projection (16) protruding from the upper end of the rear surface, and is fixedly fitted into the fitting portion (14), At the rear of the inner peripheral surface, the locking protrusion (16) is assembled so as to be slidable in the vertical direction, and a slide recess (22) having a lower surface as a locking surface (23) is formed, and the slide recess (22) is formed. A pair of elongated separation parts (24) is formed in the part, and a tightening ring (2
The upper end of the connection thin plate (21a) of 1), a top lid (25) for opening and closing the spout (8) connected by a hinge (27), a relatively hard synthetic resin lid (20). Comprising, the breaking portion (13a),
A pouring cap formed at a position corresponding to the connecting thin plate (21a). 2. The pouring cap according to claim 1, wherein the cap body (1) is formed of low-density polyethylene, and the lid (20) is formed of polypropylene.