JP3894358B2 - Pouring cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin pouring cap that is assembled to a housing and can be easily separated from the housing 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 weakening line and the weakening line are broken by pulling the lid connected via a hinge. The entire cap is removed from the housing mouthpiece and separated.
[0004]
In the prior art described above, in order to fix the cap to the casing mouth tube, the engaging protrusion provided on the outer periphery of the casing mouth tube and the engaging protrusion provided on the inner periphery of the assembled cylinder are hit. Although it is made to get over by the stopper and is connected to the undercut, there is a problem that the weakened line may be broken because the assembled cylinder is forcibly expanded in diameter when getting over with the stopper.
[0005]
As a technique for solving such a problem, a technique described in JP-A-8-155103 has been proposed.
[0006]
The pouring cap described in this publication is composed of a cap body that is undercut coupled to the casing mouth tube and does not have a weakening line, and an outer cylinder body (annular side wall) that is externally fitted to the cap body and has a weakening line. It is composed of two pieces, thereby preventing the weakening line from being broken by preventing a force from being directly applied to the weakening line when plugging into the casing tube.
[0007]
[Problems to be solved by the invention]
In the prior art described in Japanese Patent Laid-Open No. 8-151633, at the time of sorting and discarding, the outer cylinder is first broken to remove the outer cylinder, and then the cap body is removed from the casing mouthpiece. Since this cap body is firmly undercut coupled to the housing barrel, it requires a large operating force for its removal, and it is difficult to remove the cap body quickly and smoothly. It was.
[0008]
Accordingly, the present invention was devised to solve the above-described problems in the prior art, and is a two-piece pouring cap having a cap body that does not have a weakening line and a ring body that fits outside the cap body. Therefore, it is a technical problem to facilitate the removal of the cap body from the housing mouthpiece at the time of sorting and disposal, so that the separation of the dispensing cap can be achieved easily, quickly and smoothly. Objective.
[0009]
[Means for Solving the Problems]
The means of the present invention for solving the above technical problem is:
A plurality of easily elastically deformable engagement pieces that are undercut coupled to the outer periphery of the housing mouth tube are suspended from the lower end portion of the assembled tube with a spout at the top, and the rear upper end of the assembled tube Having a cap body with an upper lid connected to the part via a hinge,
A handle is continuously provided at the upper end of the cylindrical wall that is externally fitted to each engaging piece of the cap body, and the thinned weakening line extends from the upper end to the lower end of the cylindrical wall near at least one side end of the lower end of the handle. Having a ring body formed,
It is in.
[0010]
The assembling of the pouring cap into the housing mouth tube is carried out by plugging under the condition that the cylindrical wall of the ring body is externally fitted to each engaging piece at the bottom end of the assembled cylinder of the cap body. In this case, the cap body assembly cylinder is not provided with a weakening line, and since no force is directly applied to the ring body, there is no risk of the weakening line of the ring body breaking. As a result, the pouring cap can be assembled safely and smoothly into the housing mouthpiece.
[0011]
To remove the extraction cap, pull the handle of the ring body outward to break the weakening line of the cylindrical wall, and first remove the ring body (see FIG. 4).
[0012]
Next, the cap body is removed from the casing mouth tube, but the lower part of the assembled cylinder attached to the casing mouth cylinder is formed with a plurality of engagement pieces that can be easily elastically deformed. The assembled tube can be easily detached from the housing mouth tube with an extremely small operation force such as grasping and lifting the handle.
[0013]
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 20 and a ring body 13 which is externally fitted to the cap main body 1 and firmly holds the assembly of the cap main body 1.
[0014]
The cap main body 1 integrally molded with a synthetic resin such as low-density polyethylene has a stepped portion 3 to which the peripheral wall 12 of the upper lid 10 is externally fitted on the inner surface of the upper end of the assembled cylinder 2 that is closely fitted to the housing mouthpiece 20. Further, a pipe barrel piece 5 that forms a spout is erected on the inner side through the top plate 4.
[0015]
At the lower end portion of the assembled cylinder 2, a plurality of engagement pieces 6 each having an engagement protrusion 7 for undercut coupling on the inner surface and an engagement groove 8 on the outer surface are easily provided at regular intervals. The casing 20 is undercut and joined to the outer periphery of the housing mouth tube 20 by these engagement pieces 6.
[0016]
In addition, the front end of the outer peripheral surface of the thick upper portion of the assembled cylinder 2 is provided with a storage recess 9 formed in a substantially T shape from the upper end surface to the lower end surface of the upper portion.
[0017]
The upper lid 10 is connected to the rear upper end portion of the assembled cylinder 2 via a hinge 19, and the inner surface of the top wall of the upper lid 10 is connected to the inner peripheral surface of the dispensing cylinder piece 5 in the closed state of the upper lid 10. A plug piece 11 is provided so as to project the spout closely.
[0018]
The ring body 13 that is integrally formed of a synthetic resin such as polypropylene has an upper end at the front end of the cylindrical wall 14 provided with a protruding strip 15 that engages with the engaging groove 8 of the engaging piece 6 of the cap body 1 on the inner peripheral surface. Further, a thin groove-shaped weakening line 17 is provided at a position near one side end of the lower end portion of the handle 16 and extending from the upper end to the lower end of the cylindrical wall 14. It is formed in an oblique direction.
[0019]
2 and 3 show a state in which the ring body 13 is assembled to the cap main body 1, and the protruding peripheral strip 15 is engaged with the engaging groove 8, and the peripheral wall 14 is attached to each engaging piece 6. When the handle 16 is housed in the housing recess 9, the ring body 13 is assembled with the assembled cylinder 2 in a flush state, and the handle 16 can be easily held when the ring body 13 is broken. Therefore, a gap 18 is formed between the upper end of the handle 16 and the inner surface of the storage recess 9.
[0020]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
Separation and removal of the pouring cap at the time of disposal can be achieved by a simple operation that does not require great force, such as pulling the ring body outward and pulling up the cap body. Can be easily, quickly and smoothly achieved.
[0021]
In addition, since the weakening line is not provided in the cap body that directly fits to the casing mouth tube, and the weakening line is provided in the ring body that fits outside the casing mouth tube via the cap body, When the stopper is attached to the cylinder, the weakening line is not broken illegitimately, so that the stopper assembly to the casing mouth cylinder of the pouring cap can be achieved safely. Furthermore, the outer diameter of the assembled cylinder and the ring body are formed to be substantially the same, and the handle is stored in the storage recess, flush with the outer peripheral surface of the assembled cylinder. It is possible to provide an easy-to-use extraction cap. Moreover, since the clearance gap is formed between the upper end part of a handle, and a storage recessed part, a handle can be easily hold | gripped and a ring body can be fractured | ruptured.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
2 is a perspective view showing the assembled and opened state of the embodiment shown in FIG. 1; FIG.
3 is a perspective view showing the assembled and closed state of the embodiment shown in FIG. 1; FIG.
FIG. 4 is a perspective view showing a broken state of the ring body of the embodiment shown in FIG. 1;
[Explanation of symbols]
1; Cap body 2; Assembly cylinder 3; Step 4; Top plate 5; Outlet cylinder piece 6; Engagement piece 7; Engagement protrusion 8; Engagement groove 9; 12; peripheral wall 13; ring body 14; cylindrical wall 15; projecting strip 16; handle 17; weakening line 18; gap 19;

Claims (1)

An assembled cylinder (2) assembled to the housing mouth cylinder (20), an upper lid (10) connected to the upper end of the rear surface of the assembled cylinder (2) via a hinge (19), and the assembled cylinder (2) is a pouring cap consisting of a ring body (13) fitted to
The assembled cylinder (2) has a spout at the top, and a plurality of engagement pieces (6) extending downward from the lower end portion at the lower end portion, and each engagement piece ( 6) can be easily elastically deformed, and the inner peripheral surface formed by each engagement piece (6) is undercut coupled to the outer periphery of the casing mouth tube (20),
The ring body (13) includes a cylindrical wall (14) fitted to an outer peripheral surface formed by the engagement pieces (6), a handle (16) provided at an upper end of the cylindrical wall (14), In the vicinity of at least one side end of the lower end of the handle (16), a thin weakened line (17) extending from the upper end to the lower end of the cylindrical wall (14) is formed.
Furthermore, the outer diameters of the assembled cylinder (2) and the ring body (13) are formed substantially the same, and the grip (16) is attached to the assembled cylinder (2) at the front end of the outer peripheral surface of the assembled cylinder (2). 2) a storage recess (9) for storing the outer surface of the handle (16) flush with the outer surface of the handle (16), and a gap (between the upper end of the handle (16) and the storage recess (9) ( 18) A pouring cap formed .

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