KR100474052B1 - Filler proof cap made of synthetic resin - Google Patents

Abstract

This makes it easy to manufacture beautiful, pilferproof caps with a luxurious feel.

The peeler proof cap 1 is constituted by the screw lid 6 and the ring body 7 as a valve body, so that the hook body 14 is formed in the ring body 7 with respect to the flange 4 of the bottle feed opening 2. do. The stepped portion 10 is connected to the lower end surface of the screw lid 6 via the bridge portion 9, and the ring body 7 is fitted to the stepped portion 10 from the outside. Coupling means (11, 12) are provided in the step portion (10) and the ring body (7) so as not to be separated. Since the stepped portion 10 is located on the inner side about the radius of the screw lid 6 outside, the overall shape is refined. Moreover, since the color of the screw lid 6 and the ring body 7 can be different, it can exhibit a luxurious feeling and an accent effect, and can improve aesthetics remarkably.

Description

Filler proof cap made of synthetic resin

TECHNICAL FIELD This invention relates to the improvement of the peeler proof cap made from synthetic resin which can confirm a false opening.

A synthetic resin capper proof cap generally consists of a screw cap of a downward opening that is twisted into a bottle opening, and a taper-evidence band (hereinafter referred to as a "TE band") disposed at the lower end thereof. It is connected with the screw lid and the bridge | collar which can be pulled off, and it is set as the structure which provided the coupling part, such as a tongue shape, to engage with the TE band at the lower end of the flange formed in the bottle opening.

In this case, the one-part type that integrally formed the whole of the screw cap and the TE band, and the screw cap and the TE band are manufactured separately, and the TE band and the screw cap are fitted using elastic deformation. There is one two-part type.

As a specific example of the latter, Unexamined-Japanese-Patent No. 51-18195, Unexamined-Japanese-Patent No. 3-75424, Unexamined-Japanese-Patent No. 4-9330, and Unexamined-Japanese-Patent No. 4-30113 are mentioned, for example. Each of these prior arts separates the TE band into a top and a bottom connected via a removable bridge, joins the top of the TE band to the bottom of the screw cap, and below the TE band, the bottom of the flange at the feed inlet. The coupling part which couples to is formed. In other words, Unexamined-Japanese-Patent No. 51-18195 of each of these prior art forms the radially outward blade | wing part at the lower end of a screw cover, and positions this blade part from the upper side of TE band outside. On the other hand, the publications of Japanese Patent Application Laid-Open Nos. 3-75424, 4-9230 and 4-30113 are configured to fit the upper part of the TE band to the inner circumferential surface of the lower part of the screw lid.

In the case of the one-part type in which the screw lid and the TE band are integrally formed, it is difficult to attain both the ease of drawing the mold during molding and the rigid structure of the engaging portion against the flange of the bottle opening, as in the above publications. If the lid and the TE band are made of separate two-part type, the locking part on the flange of the bottle opening can be made rigid. Therefore, the bridge part is prevented from being opened without falling off and the sealing function can be confirmed. Present functionality).

By the way, for example, in the case of a cap in which aesthetics are important, such as a cap of a cosmetic container, it is performed to form a rim line such as gold or silver at the lower edge of the cap in an annular form, and in the capperproof cap, If you can design with a tone of four colors, you will noticeably improve the aesthetics by the luxurious feeling and accent effect.

As the means for designing the two-tone color, the color of the screw lid and the TE band is different or the TE It is contemplated to give the band color by thermal transfer or the like.

However, if the TE band is fitted to the flange formed at the lower end of the screw lid as shown in Unexamined-Japanese-Patent No. 51-18195, it can be easily molded by manufacturing by injection molding. The outer diameter of the difference is so different that it does not necessarily improve the aesthetics. That is, there is little freedom of design.

On the other hand, as shown in Japanese Unexamined Patent Application Nos. 3-75424, 4-9230, and 4-30113, for example, the upper part of the TE band is fitted to the inner surface of the screw cap, for example. As shown in Fig. 11 of the publication, the screw lid can be formed in a straight shape, and the lower part of the TE band (exposed part) can be formed with the same diameter as the outer circumferential surface of the screw lid, so that the aesthetics can be improved. There was a problem that it is difficult to form a protrusion (undercut) to join the TE band on the inner circumferential surface.

This invention is made | formed in view of such a situation, and an object of this invention is to provide the 2-part type peeler proof cap which can improve aesthetics, without impairing the ease of shaping | molding.

The present invention for achieving the above object is "a screw cap of a cylindrical synthetic resin having a bottom with a downward opening for screwing into a bottle opening formed in the male peripheral shape on the outer circumferential surface, and synthetic resin attached to the lower end of the screw lid A ring-shaped cap formed by forming a ring body of the screw cap and the ring body separately, and forming a locking portion on the lower surface of the flange formed at the bottle opening in the ring body, wherein the ring body is formed at the lower end of the screw lid. The stepped portions, such as a ring shape, which overlap each other on the inner circumferential surface thereof, are integrally provided through a pullable and cutable bridge portion, and the stepped portions and a portion of the stepped portions are resistively inserted into the outer surface of the stepped portion and the inner surface of the ring body so as to be separated from each other. A coupling means for coupling impossiblely is provided. ”

Next, embodiments of the present invention will be described with reference to the drawings.

1 to 6 show a first embodiment, in which FIG. 1 is a partially broken cross-sectional view in which the peeler proof cap 1 is fitted to the bottle opening 2, and FIG. 2 is a longitudinal cross-sectional view of the separated state; 3 is a sectional view taken along the line III-III of FIG. 2, FIG. 4 is a view taken along the line IV-IV of FIG. 2, (A) is a cross-sectional view of the use state at the AA location of FIG. 4, and (B) is a view of FIG. It is sectional drawing of state of use in BB place.

As shown in FIG. 1, the thread 3 is formed on the outer circumferential surface of the bottle feed port 2, and the flange 4 is formed below the thread. Moreover, the upper end of the bottle opening 2 is formed with the small diameter, and the nozzle 5 made of synthetic resin is attached to this small diameter part 2a.

The peeler proof cap (1) is a downward opening for screwing into the bottle opening (2) with a bottomed tubular screw cap (6) and a ring body (7) attached to the lower end of the screw cap (6). Both are made separately by injection molding made of synthetic resin such as polypropylene. The packing 8 is fitted in the upper part of the screw lid 6.

As shown in FIG. 2, the ring-shaped stepped portion 10 is provided on the lower end face of the cylindrical portion 2a of the screw lid 6 via a plurality of bridge portions 9 (in the example shown in the drawing). It is connected in one piece. The step portion 10 is located radially inward from the outer circumferential surface of the screw lid 6, and the annular projection 11 is formed on the outer circumferential surface of the step portion 10 as an example of the engaging portion. The bridge part 9 is formed in large shape so that the cross-sectional area of the upper end may become small.

When the bridge portion 9 is formed in a cross-sectional shape as in the embodiment, since the stress can be concentrated and cut off at the upper end of the bridge portion 9 when opening, the bridge portion 9 at the lower end of the screw lid after opening. Prevents or suppresses the traces of, improving aesthetics.

The upper end of the ring body 7 is substantially the same outer diameter as the lower end of the screw lid 6, and is formed in the outer shape which bulged down as a whole (it may be a straight type), and the said step part 10 in the inner peripheral surface The annular groove 12 as an example of the engaging portion fitted to the annular projection 11 of the c) is formed to extend over the entire circumference. The ring body 7 is detachably attached to the screw lid 6 by fitting the annular groove 12 and the annular projection 11 by using the elastic deformation of the ring body 7 and the stepped section 10.

Moreover, in the state which fitted the annular groove 12 and the annular projection 11, the upper end of the ring body 7 is set so that it may be in close contact with the lower end of the screw lid 6. As shown in FIG. As shown in Fig. 2, projections projecting upward with a protruding dimension slightly smaller than the protruding dimension of the bridge portion 9 are formed at portions between the bridge portions 9 adjacent to each other among the upper surfaces of the ring body 7 ( 13) is being installed. This projection 13 is for preventing the bridge portion 9 from sheet deformation in fitting the ring body 7 and the stepped portion 10.

At the lower end of the inner peripheral surface of the ring body 7, the hook 14 as an example of a stiffened part which catches on the lower surface of the flange 4 of the bottle opening 2 and maintains the ring body 7 in a non-movable manner, and the flange 4 On the outer circumferential surface, spring pieces 15 which elastically touch are formed alternately along the circumferential direction. By twisting the screw lid 6 into the bottle opening 2 while deforming these hooking hook 14 and the spring piece 15, as shown in FIG. 5, the hooking hook 14 of the bottle opening 2 is carried out. Located below the flange 4, the spring piece 15 comes in contact with the outer surface of the flange 4 in a state of elastic deformation.

In this case, the hook 14 may be set so as to elastically touch the neck portion of the flange 4 in the bottle opening 2, but by doing so, the screw lid 6 is twisted to the bottle opening 2 There is a possibility that the hook 14 becomes overhanging the flange 4 even when the resistance of the hook 14 is too large or the screw lid 6 is twisted. On the other hand, when the spring piece 15 is formed separately from the hook 14, the spring piece 15 is abutted against the flange 4 while the hook 14 is securely held on the lower surface of the flange 4, and the ring body is formed. There is an advantage to keep (7) in a stable posture.

The radially inward dimension of the spring piece 15 is set to a dimension slightly smaller than the inwardly projected dimension of the locking hook 14. Moreover, the width dimension and space | interval of the hook 14 and the spring piece 15 can be set to arbitrary values in the range which does not impair the function.

As shown in FIG. 5 (B), the step of the screw lid 6 is formed by the main body portion of the ring body 7 and the spring piece 15 in a state where the screw lid 6 is screwed to the bottle opening 2. (10) is set to fit. Therefore, the fitting state of the annular projection 11 and the annular groove 12 is ensured, and the attachment strength of the ring body 7 to the screw lid 6 is further improved.

The mold apparatus for manufacturing the screw lid 6 by injection molding includes, for example, a first mold 16 having a cavity fitted to the screw lid 6, as partially shown by a dashed line in FIG. The second mold 17 forming the outer surface of the bridge portion 9 and the stepped portion 10, the third mold 18 forming the inner surface of the bridge portion 9 and the stepped portion 10, and a screw lid. The motor rack 19 for forming the screw part of the inner surface of (6) is provided. The notch groove 20 in which the 3rd type | mold 18 is engaged in the lower end inner surface of the cylindrical part 6A in the screw lid 6 so that the motor rack 19 may be pulled out while rotating the motor rack 19 from the screw lid 6. To form.

The first mold 16, the third mold 18 and the fourth mold 19 move in the axial direction of the screw lid 6, and the second mold 17 moves in the radial direction. It is.

The ring body 7 is molded by a pair of molds moving in the axial direction, and the mold 7 is pulled out from the coupling groove 12 by a so-called grouping using elastic deformation.

In the above configuration, since the annular projection 11 can be easily formed on the outer surface of the stepped portion 10, it is easier to position the stepped portion 10 in the radially inner side than the outer circumferential surface of the screw lid 6. As a result, the outer diameter of the ring body 7 can be prevented from becoming excessively large, and a two-part type can be designed in a neatly visually superior form. Moreover, since the bridge part 9 was formed in the screw lid 6, it becomes easy to provide the bridge part 9 in the height position of the upper end of the ring body 7, Therefore, after opening, the screw cover 6 is opened. ) Becomes the same shape as the ordinary bottomed tubular screw lid 6, and the appearance is good even after opening.

In addition to the above points, as shown schematically in Fig. 6, for example, the screw lid 6 is made of white synthetic resin and the ring body 7 is made of red synthetic resin. By varying the colors of 6) and the ring body 7, high-quality or accent effects can be imparted to the peeler proof cap 1, and the aesthetics can be remarkably improved before and after opening.

Instead of, or in addition to, the screw lid 6 and the ring body 7 as a synthetic resin of different colors, as shown by a dashed-dotted line in FIG. 2, a transfer tape in which metal is deposited on one side of a tape such as a synthetic resin Using the (21), the color coated surface of the transfer tape 21 abuts against the outer circumferential surface of the ring body 7, rotates the ring body 7, and releases the transfer tape 21 to release the heated rubber roller (in the drawing). (Not shown), the outer circumferential surface of the ring body 7 may be colored by pressing the transfer tape 21 on the outer circumferential surface of the ring body 7. When the transfer tape 21 is used in this way, various metal colors such as silver, gold, and chrome can be easily provided, which is more effective for giving a sense of quality.

In addition, although the screw lid 6 is formed in the state in which the bridge part 9 was provided in the Example, after shaping | molding in the absence of the bridge part 9, the bridge | bridging is cut in the lower part of the cylinder part 6a by a mutter. The part 9 and the stepped part 10 may be formed. In addition, as the coupling means of the stepped portion 10 and the ring body 7, the annular groove may be formed in the stepped portion 10 to form the annular projection in the ring body 7. Moreover, you may form intermittently, without forming a processus | protrusion and a groove annularly. The stepped portion 10 may not be formed in a ring shape but may be formed so as to extend intermittently in the circumferential direction.

7 is a 2nd Example which is a modification of the outer surface shape of the ring body 7. As shown in FIG. In addition, the outer surface of the ring body 7 may be formed in a state where a plurality of annular lines have entered, or the plurality of lines may be treated on an outer circumferential surface of the ring body 7 by appropriate means such as thermal transfer.

8 to 10 show a third embodiment, in which FIG. 8 is a front sectional view in a separated state, FIG. 9 is a sectional view of FIG. 8 (plan view of the ring body), and FIG. 9 is a cross-sectional view of the use state at the AA position in FIG. 9, (B).

In this embodiment, the outward annular hook 22 is formed on the outer circumferential surface of the stepped portion 10 in the screw lid 6 so as to extend over the entire circumference. On the other hand, on the inner circumferential surface of the ring body 7, a plurality of inwardly engaging hooks 23 (4 in the drawing) caught on the outward annular hook 22 of the stepped portion 10 are continuously extended along the circumferential direction. Forming.

In this case, the site | part between the inward coupling hooks 23 which contacted each other among the inner peripheral surfaces of the ring body 7 is formed in the recessed part 24 which the outward annular hook 22 did not engage, and this recessed part 24 The hook 14 is formed at the location of the flange 4 of the bottle feed port 2. Moreover, the point of the inwardly engaging hook 23 in the bottom part of the ring body 7 is opened downward (opening part is indicated by the code | symbol 25), and the spring piece (through the continuous part 26 which fitted the opening part 25) 15) is being installed.

In this embodiment, the inwardly engaging hook 23 is provided only partially along the circumferential direction of the ring body 7, but the inwardly engaging hook 23 does not impair the ease of mold drawing during molding due to the presence of the opening 25. Since the inward protrusion dimension of the engaging hook 23 can be increased, both engaging hooks 22 and 23 can be firmly fastened, and as a result, the ring body 7 can be firmly attached to the screw lid 6. have.

In addition, since the hook 14 is connected to the main body of the ring body 7 over its entire width, the holding function of the hook 14 against the flange 4 is not impaired. In addition, as in the first embodiment, since the outward hook 14 is sandwiched by the main body portion and the spring piece 15 of the ring body 7, the fitting hooks 22 and 23 can be easily fitted. In addition, the adhesion strength of the ring body 7 to the screw lid 6 is further improved.

In each of the above embodiments, the ring body 7 remains in the bottle opening 2 after opening, but the stepped portion 10 and the ring body 7 may be cut out. In addition, when design requests are made, the outer diameter of the ring body 7 may be set to a larger diameter than in the case of the embodiment.

In addition, the case where a hook part (locking part) and a spring piece are attached to the ring body and fixed in a stable state can be applied even when a bridge part is formed in the ring body.

If the bottle (base body) and the cap are made of the same material (for example, polypropylene), there is an advantage that the ring bodies cannot be removed from the bottle opening one by one when the container is recycled after opening.

According to the present invention, since the coupling means provided on the stepped portion of the screw lid is formed on the outer circumferential surface, even if the stepped portion is radially inward from the outer circumferential surface of the screw lid, the stepped portion having the coupling means such as an annular protrusion is provided. The screw lid can be easily molded by the injection molding method. The outer diameter of the ring body (TE band) does not have to be made excessively larger than the outer diameter of the screw cap by eliminating the need to increase the outer diameter of the stepped portion. As a result, the outer diameter of the screw cap and the ring body is balanced to refine the whole. It can be in one form.

In addition to this, it is easy to manufacture the screw cap and the ring body with a different color material, or to color the metal cap or the like on the outer surface of the ring body by transfer or the like, and to separate the peelproof cap into two tone colors. It gives a sense of luxury and accent to enhance your aesthetics.

Therefore, according to this invention, it has an effect which can further improve the aesthetics of a peeler proof cap, without impairing the ease of manufacture.

Moreover, when comprised like Claim 2 of a claim, since the ring body is kept in the state arrange | positioned well at a bottle opening by a spring piece, it becomes as if the ring body was stuck to a bottle opening, and it has a more aesthetic sense. Improve. In addition, since the stepped portion of the screw lid is fitted in the inner and outer sides by the main body portion and the spring piece of the ring body, there is an advantage that the attachment strength with the ring body to the screw lid can be further improved.

1 is a partially broken front view showing a use state of the first embodiment.

2 is a longitudinal sectional view of a state in which the screw cap and the ring body are separated.

3 is a plan sectional view taken along the line III-III of FIG.

4 is a plan view illustrating IV-IV of FIG. 2.

5: (A) is sectional drawing of the use state in the A-A location of FIG. 4, (B) is sectional drawing of the use state in the B-B location of FIG.

6 is a front view showing the difference in color between the screw cap and the ring body.

7 is a partial sectional view of a second embodiment.

8 is a longitudinal cross-sectional view of a state where the screw lid and the ring body of the third embodiment are separated.

FIG. 9 is a plan view represented by VIII-VIII in FIG. 8. FIG.

FIG. 10A is a cross-sectional view of the use state at the A-A location of FIG. 9, and (B) is a cross-sectional view of the use state at the B-B location of FIG.

-Explanation of symbols for the main parts of the drawings-

1: peelerproof cap 2: bottle opening

4 flange 6 screw lid

7: ring body 9: bridge portion

10: stepped portion

11: annular projection as an example of coupling means

12: annular groove as an example of a coupled state

14: hook as an example of the hook portion

15: spring

Claims (2)

It consists of a downward-stage opening and a bottom-shaped cylindrical synthetic resin screw cap which is screwed into a bottle-inlet formed with a male screw on the outer circumferential surface, and a ring body made of synthetic resin attached to the lower end of the screw lid. As a peeler proof cap which is manufactured by a sieve and formed in the ring body a locking portion for the lower surface of the flange formed at the bottle opening, At the lower end of the screw lid, a stepped portion such as a ring shape overlapping each other on the inner circumferential surface of the ring body is integrally provided through a bridge portion that can be pulled out, and the stepped portion and the ring body are elastically mounted on the outer surface of the stepped portion and the inner surface of the ring body. A filler resin cap made of a synthetic resin, characterized in that a coupling means is provided so as to be detachably coupled to each other by being inserted by resistance. The ring-shaped projection according to claim 1, wherein an annular projection extending over the entire circumference is formed on the outer circumferential surface of the stepped portion of the screw lid, and the ring-shaped projection is formed on the inner circumferential surface of the ring body as the coupling means. The annular groove to be fitted is formed, and these annular projections and the annular grooves are set so as to be fitted to each other with a deformation resistant to the elasticity of the step portion and the ring body, and the ring body is elastically attached to the outer peripheral surface of the flange at the bottle opening. A synthetic resin filler cap, wherein the spring piece is integrally installed and screwed to the bottle opening, so that the spring piece is in close contact with or close to the stepped portion of the screw lid.

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