Container stopper having multi-lock structure

Abstract

The present invention relates to a container stopper having a multi-lock structure in which a multi-lock structure is applied to the inner circumferential surface of an opening of a lower stopper, and to the outer circumferential surface of a sealing protrusion of an upper stopper coupled thereto, thereby preventing the coupled stoppers from being easily opened due to shock or other external force generated during the distribution process or storage of a product. To this end, the present invention provides a container stopper comprising: a lower stopper (110) which is coupled to an inlet (10) of a container (10); and an upper stopper (120) which allows an opening (111) provided within the lower stopper (110) to be selectively opened and closed, wherein at least two locking parts (130) are formed so as to be spaced apart from each other in the insertion direction on the inner circumferential surface of the opening (111) of the lower stopper (110) and on the outer circumferential surface of a sealing protrusion (121) of the upper stopper (120) coupled to the inner circumferential surface. The present invention as described above has the advantages of allowing the main locking position of the upper stopper coupled to the opening of the lower stopper to be formed so as to be inclined toward the end side of the sealing protrusion, thereby preventing the upper stopper from being easily opened by external shock, and also of improving the assembly strength of the upper stopper by applying the position of the locking parts to at least two points on the outer circumferential surface of the sealing protrusion.

Claims

1. A container stopper having a multi-locking structure, comprising: a lower stopper part coupled to an inlet of a container; an upper stopper part selectively opening and closing an opening formed inside the lower stopper part; and at least two locking parts formed spaced apart from each other on an inner circumferential surface of the opening formed inside the lower stopper part and on an outer circumferential surface of a sealing protrusion portion of the upper stopper part coupled to the inner circumferential surface of the opening, wherein the locking parts comprise a locking coupling structure wherein the locking parts comprise a first locking point formed on a circumference of an end portion of the sealing protrusion portion; wherein the first locking point has a locking coupling structure in which a stepped projection is formed on the opening and a locking projection is formed on the sealing protrusion portion in such a manner as to be locked correspondingly onto the stepped projection, and wherein the locking projection comprises a slant surface slidingly coming into contact with one side of the stepped projection upon the insertion of the sealing protrusion portion into the opening and a locking surface lockingly coupled to the other side of the stepped projection at the same time when the slant surface slides.

2. The container stopper according to claim 1, wherein the locking parts comprise a second locking point formed on an outside circumference edge of the opening.

3. The container stopper according to claim 2, wherein the second locking point comprises a protrusion protruding from the sealing protrusion portion and a coupling groove is formed on the opening in such a manner as to insert the protrusion therein.

4. The container stopper according to claim 3, wherein the protrusion and the coupling groove have any one of a semicircular section and a polygonal section.

Description

DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a perspective view showing a conventional container stopper.

(2) FIG. 2 is a side sectional view showing the closed state of an upper stopper part of FIG. 1.

(3) FIG. 3 is a detailed sectional view showing a portion A of FIG. 2.

(4) FIG. 4 is a perspective view showing a container stopper having a multi-locking structure according to the present invention.

(5) FIG. 5 is a side sectional view showing the container stopper of FIG. 4.

(6) FIG. 6 is a side sectional view showing the closed state of an upper stopper part of FIG. 4.

(7) FIG. 7 is a detailed sectional view showing a portion B of FIG. 6.

MODE FOR INVENTION

(8) Hereinafter, an explanation on the configuration and operation of a container stopper having a multi-locking structure according to the present invention will be in detail given with reference to the attached drawing.

(9) In order to facilitate the general understanding of the present invention in describing the present invention, through the accompanying drawings, the same reference numerals will be used to describe the same components and an overlapped description of the same components will be omitted.

(10) FIG. 4 is a perspective view showing a container stopper having a multi-locking structure according to the present invention, FIG. 5 is a side sectional view showing the container stopper of FIG. 4, and FIG. 6 is a side sectional view showing the closed state of an upper stopper part of FIG. 4.

(11) Referring to FIGS. 4 and 5, a container stopper 100 having a multi-locking structure according to the present invention includes a lower stopper part 110 coupled to an inlet 11 of a container 10, an upper stopper part 120 having a sealing protrusion portion 121 formed on one surface thereto in such a manner as to selectively open and close an opening 111 formed inside the lower stopper part 110, and at least two locking parts 130 formed spaced apart from each other in a direction in which the upper stopper part 120 is inserted into the lower stopper part 110 on the inner circumferential surface of the opening 111 of the lower stopper part 110 and on the outer circumferential surface of the sealing protrusion portion 121 of the upper stopper part 120 coupled to the inner circumferential surface of the opening 111.

(12) Now, the configuration of the container stopper 100 having a multi-locking structure according to the present invention will be in detail explained.

(13) First, the locking parts 130 serve to prevent the upper stopper part 120 from opening due to shocks generated during the distribution process or storage of the liquid container product or due to external forces not applied thereto.

(14) Referring in detail to FIG. 6, the locking parts 130 have a first locking point I formed on the circumference of the end portion of the sealing protrusion portion 121 and a second locking point II formed on the outside circumference edge of the opening 111. That is, the locking parts 130 having the plurality of locking points I and II spaced apart from each other by a given distance in such a manner as to allow the entire portion of the outer circumferential surface of the sealing protrusion portion 121 to be fittedly coupled to the opening 111, thereby allowing the rigid coupling state of the upper stopper part 120 to the lower stopper part 110 to be maintained well.

(15) According to the present invention, for example, the locking parts 130 has the two locking points I and II, but only if the rigid coupling state of the upper stopper part 120 can be maintained, of course, the locking parts 130 may have two or more locking points, that is, three or four locking points.

(16) Referring to FIG. 7, the first locking point I has a locking coupling structure in which a stepped projection 131 is formed on the inner circumferential surface of the opening 111 and a locking projection 133 is formed on the outer circumferential surface of the sealing protrusion portion 121 in such a manner as to correspond to the stepped projection 131.

(17) In this case, the locking projection 133 includes a slant surface 133a slidingly coming into contact with one side of the stepped projection 131 upon the insertion of the sealing protrusion portion 121 into the opening 111 and a locking surface 133b lockingly coupled to the other side of the stepped projection 131 at the same time when the slant surface 133a slides.

(18) Further, the second locking point II has a structure in which a protrusion 135 is formed protrudingly from the outer circumferential surface of the sealing protrusion portion 121 and a coupling groove 137 is formed on the inner circumferential surface of the opening 111 in such a manner as to insert the protrusion 135 thereinto.

(19) In this case, the protrusion 135 and the coupling groove 137 have a semicircular section, but they may have any one of polygonal sections such as triangular, square, and trapezoidal sections. According to the present invention, for example, the protrusion 135 and the coupling groove 137 having the semicircular sectional shape will be discussed.

(20) In this case, the coupling structure between the locking projection 133 and the stepped projection 131 and the coupling structure between the protrusion 135 and the coupling groove 137, which have different locking characteristics from each other, are combinedly applied to the container stopper 100 according to the present invention, so that when compared with the case wherein the plurality of locking parts 130 has only the coupling structure between the locking projection 133 and the stepped projection 131, it is possible to maintain a more rigid coupling state.

(21) In more detail, the coupling structure between the locking projection 133 and the stepped projection 131 can achieve easy coupling, but it may have a relatively smaller coupling force than the coupling structure between the protrusion 135 and the coupling groove 137. Contrarily, the coupling structure between the protrusion 135 and the coupling groove 137 can have a greater coupling force than the coupling structure between the locking projection 133 and the stepped projection 131, but it may have a relatively low coupling convenience in inducing gentle coupling.

(22) Accordingly, the locking parts 130 do not have the two coupling structures having the same as each other, and as mentioned above, that is, they adopt the different coupling structures from each other, thereby desirably improving both of the coupling force and the coupling convenience.

(23) According to the present invention, for example, the stepped projection 131 and the locking projection 133 are formed on the first locking point I, and the protrusion 135 and the coupling groove 137 are on the second locking point II, which is of course not limited thereto. That is, the protrusion 135 and the coupling groove 137 may be formed on the first locking point I, and the stepped projection 131 and the locking projection 133 may be on the second locking point II.

(24) A referent numeral 123 not explained yet denotes a hinge band, and a reference numeral 125 denotes a handle.

(25) As described above, the container stopper 100 having a multi-locking structure according to the present invention is configured wherein the upper stopper part 120 coupled openably and closably to the opening 111 of the lower stopper part 110 has the main locking position located more inclinedly on the circumference of the end portion of the sealing protrusion portion 121 (that is, on the circumference of the front end of the insertion direction of the sealing protrusion portion 121)) when compared with the conventional container stopper, so that even if an external shock is applied to the upper stopper part 120, the upper stopper part 120 cannot open easily.

(26) Particularly, the locking parts 130 are located in such a manner as to have at least two locking points formed on the outer circumferential surface of the sealing protrusion portion 121 and on the inner circumferential surface of the opening 111, and further, the shapes and structures of the locking parts 130 are different from each other to improve the coupling strength of the upper stopper part 120.

(27) While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.

EXPLANATIONS OF REFERENCE NUMERALS IN THE DRAWING

(28) 10: container

(29) 11: inlet

(30) 100: container stopper

(31) 110: lower stopper part

(32) 111: opening

(33) 120: upper stopper part

(34) 121: sealing protrusion portion

(35) 130: locking part

(36) 131: stepped projection

(37) 133: locking projection

(38) 133a: slant surface

(39) 133b: locking surface

(40) 135: protrusion

(41) 137: coupling groove

(42) I: first locking point

(43) II: second locking point