KR100495259B1 - Panel interlocking means for cartons - Google Patents

Abstract

In the panel joining means for fixing the first and second panels 10, 12 together in an overlapping shape, the first panel has a locking tab 14 extending from the first panel, the locking tab A retaining tab 30 having a neck portion 20 hinged to the first panel and a shoulder portion 22 connected to the neck portion, wherein the second panel is folded in the second panel and formed in the locking hole. The holding tab is moved out of the plane of the second panel to receive the locking tab through the locking hole and abuts the locking tab portion protruding beyond the shoulder portion, the locking edge 25 of the locking tab ) Is the shoulder side lateral edge of the locking tab that engages with the panel portion of the second panel located proximate to the curved edges 43, 45 of the locking hole so that the first panel and the second panel overlap and lock. Books are provided.

Description

Cardboard box with panel joining means {PANEL INTERLOCKING MEANS FOR CARTONS}

The present invention relates to a panel joining means for cardboard boxes which hold together a pair of panels, for example overlapping panels of cartons. In this state, a pair of panels are provided at opposite ends of a wrapper blank, which are joined together in an overlapping shape.

Locking tabs which are folded at one end of a carton wrapper and forcibly arranged through corresponding holes formed by retaining tabs folded at opposite ends of the carton are well known. . An example of such a locking tab substantially corresponds to British Patent No. 1,598,367 shown in FIG. The problem with this type of locking tab is that when the locking tab enters through an aperture, the alignment of the shoulder portion 1 with the rest of the tab passes through the hole as shown in FIG. It is forcibly folded. This is undesirable because it weakens the strength of the locking tab. Moreover, if the mechanism does not punch the fasteners through the holes accurately or completely, no complete tabs can be obtained and as a result the cardboard boxes are no longer available or reliable in use. Moreover, such incomplete lock tabs are difficult to find before use.

Another embodiment is illustrated in British Patent No. 2,156,785 owned by the applicant of the present invention. The specification discloses a wraparound carton with panel fastening means comprising a locking tab actuating through a hole. It is clear from the figure that the outer portions of the tab are forcibly folded out of alignment with the rest of the tab during the locking procedure. The locking tab is supported by the retaining tab and the bottom of the locking tab is disposed at the position where the locking tab is engaged with the locking edge of the locking hole.

In contrast, the present invention provides a panel engagement means that allows the locking tabs to be deformed during locking and can easily find an incomplete engagement between the locking tab and the holding tab before use. Moreover, since the retaining tab is wider than the known similar locking tab, the height between the locking tab and the locking finger which engages with the locking tab by increasing the holding time of the finger in the inflow direction can be easily adjusted. Increased coordination in the system prevents incomplete engagement between the locking and retaining tabs.

According to an aspect of the present invention, there is provided a panel coupling means for fixing the first panel and the second panel overlapping together, the first panel includes a locking tab folded from the first panel, the locking tab A base has a neck portion hinged to the first panel and a shoulder portion continuous with the neck portion, wherein the second panel has a locking hole folded from the second panel. a holding tab extending into the aperture, the holding tab being displaced from the plane of the second panel to receive the locking tab through the locking hole, the panel being in contact with a portion of the locking tab that projects beyond the shoulder portion. In the engaging means, the locking hole is sized and / or shaped so that the locking tab can move unobstructed through the locking hole, and a locking edge of the locking tab is And a shoulder portion interlocked with at least one panel portion of the first panel positioned adjacent to the locking hole so as to maintain a lock overlap state with the locking tab, the first panel and the second panel. To provide a cardboard box having a panel coupling means.

According to a second aspect of the present invention, a wrap-around plank blank includes panel engaging means having a first panel and a second panel, the first panel comprising a locking tab folded from the first panel, The locking tab has a neck portion at which a base is hinged to the first panel and a shoulder portion continuous with the neck portion, and the second panel includes a retaining tab defining a locking hole folded from the second panel. And the retaining tab is displaced from the plane of the second panel to receive the locking tab through the locking hole having a size and / or shape through which the locking tab can move unobstructed through the locking hole, and the shoulder And a portion of the locking tab protruding beyond the portion, wherein a locking edge of the locking tab is combined with the locking tab, the first panel, and the second panel. It is to provide a wrap-around cardboard box blank having a panel engaging means characterized in that provided in the shoulder portion interlocking with at least one panel portion of the second panel located adjacent to the locking hole to maintain the state. .

According to an optional feature in another aspect of the invention, the retaining tab is folded in the second panel to form a locking hole.

According to another optional feature of the invention, the locking tab comprises a second locking edge which engages with the second panel portion opposite and spaced apart from the first panel portion around the locking hole.

According to another optional feature of the invention, each panel portion is positioned adjacent at one corner of the distal end of the locking hole.

Preferably, the edges of the corners are curved.

According to an optional feature in another aspect of the invention, the cut line formed in the locking hole is shaped to provide a recess extending along a portion of the side edge of the locking hole, the recess being the locking tab. It is applied to accommodate the shoulder of the man. Preferably, the retaining tab includes a portion protruding along the side edge of the locking hole.

Embodiments of the invention are described below by way of example.

1 shows locking means corresponding to British Patent No. 1,598,368;

FIG. 2 shows a close proximity of a pair of panels existing at the end of the wraparound cardboard carton blank, that is, one panel including the locking tab and another panel including the retaining tab and the locking hole;

3 is a perspective view showing that the pair of panels described in FIG. 2 are connected; And

FIG. 4 illustrates a close proximity of a pair of panels present at opposite ends of a wraparound cardboard carton blank, ie one panel comprising a locking tab and another panel comprising a retaining tab and a locking hole. 2 examples.

Referring to Figures 2 and 3, the pair of panels 10, 12 are each joined together and formed of cardboard or foldable similar sheet material. Panels 10 and 12 are disposed at opposite ends of a wraparound carton blank to be formed in the carton sleeve, wherein panels 10 and 12 provide the bottom panel of the carton. Cardboard boxes are used to pack many items such as cans.

The locking tab 14 is folded in the first panel 10 and hingedly connected to the first panel by a fold line 16. The fold line 16 is spaced from the end edge 18 of the panel 10 and is substantially parallel to the end edge. A locking tab 14 includes a main portion 21 comprising a shoulder portion 22 and a neck portion 20. The neck portion 20 It is hingedly connected to the panel 10 along the fold line 16. Optionally, the fold line 16 is positioned at the center portion of the neck 20. A pair of opposed cutting lines ( 24, 26 are formed at the side edges of the neck 20, and preferably extend beyond the fold line 16. Optionally, the fold line 16 is a line that cuts so that the locking tab 14 can be easily folded. Separated by.

The main part 21 extends beyond the neck part 20 towards the end edge 18 and by a cutting line 28 connected to the cutting lines 24 and 26 so that the shape of the main part is shaped as an "arrow head". It is separated from the first panel 10. The neck portion 20 should be smaller than the adjacent portion of the shoulder portion 22 to form at least one locking edge 25 formed along the lower portion of the shoulder portion.

Referring to FIG. 2, the holding tab 30 is folded in the second panel 12 and hingedly connected to the second panel by the fold line 32. The fold line 32 is spaced apart from the end edge 34 of the panel 12 and is substantially parallel to the end edge 34. Optionally, the fold line 32 is separated by a line that cuts so that the retaining tab is easily folded. The retaining tab 30 includes an extension 36, a pair of opposedly disposed cutting lines 38, 40 disposed with increasing spacing toward the end edge 34 and formed at the side edges of the extension 36. Is separated from the panel 12. Cutting line 42 is formed at a distal edge 37 of extension 36 substantially parallel to fold line 32. In this embodiment, the cutting lines 38, 42 are interconnected by curved cutting lines 44 to form the panel portion 43 near the locking hole. In this form, the cutting lines 40 and 42 are also interconnected by the curved cutting line 46 to form the second panel portion 45 near the locking hole.

In the embodiment described in FIG. 3, the widest portion of the shoulder portion 22 corresponds to the maximum spacing point B between the cutting lines 38, 40, whereby the locking tab 14 is unobstructed or out of plane. It can pass through the hole without being forcibly folded. Preferably, the radius of curvature C in the cutting lines 44, 46 is such that the locking tab 14 shoulder portion 22 such that the locking tab 14 passes through the hole 48 formed by the retaining tab 30. It must be greater than or equal to the radius of curvature at the base.

One of ordinary skill in the art provides a cardboard box provided with a plurality of locking tabs and holding tabs substantially the same as the locking tab 14 and the holding tab 30 for locking both panels together. It is possible to do so and will not be described in more detail. In addition, the panel engaging means comprises a "a half lock" shown in FIG. 1, i.e., a locking hole formed at one side of the locking tab, the holding tab and a notional cetre line (D). can do. The general principle of applying panel joining means in a semi-locking device is disclosed in the prior art. Therefore, it will be apparent to those skilled in the art that the present invention includes a semi-locking device that cooperates with the appropriate features of the present invention.

In order to join the first panel 10 and the second panel 12 together, the two panels are shaped to overlap each other, and the locking tab 14 is folded out of the panel 10 plane. The retaining tab 30 is folded from the panel 12 plane and the locking tab 14 is punched in through the hole 48 formed by the retaining tab 30. Advantageously, the base of the shoulder portion 22 does not need to be modified to pass through the hole 48. One advantage of the present invention is that no interference fit is required during the locking process, thereby reducing the strength required at the locking tab shoulder during punching insert operation.

As the locking tab 14 passes through the hole 48, the locking tab is folded along the fold line 16 to be substantially perpendicular to the panels 10, 12, and the cutting line of the retaining tab 30 ( Is pushed past 42). The holding tab 30 is in contact with one side of the shoulder portion 22, prevents the shoulder portion from returning to the initial position by elasticity, and the corresponding edge of the hole 48 is in contact with the mother portion 920, thereby locking it. Since the tab 14 is substantially vertical, the locking tab 14 is held in the proper position.

As illustrated in FIG. 3, the base of the shoulder portion 22 is maintained at an appropriate position in contact with the panel portion of the second panel, and is formed by the radius of curvature of the cutting lines 44, 46 in the embodiment, the shoulder The portion is larger than the locking hole in the vertical or inclined position. If the locking tabs do not interlock, this can be easily seen and corrected after the lock process is performed because the state of the shoulders does not change. It will also be appreciated by those skilled in the art that the retaining tab 30 is larger than the known locking means, and the amplitude of the locking finger motion facilitates locking. It can be seen that it is improved by the height and flow direction in the adjustable container.

Tensile forces are given to the first and second panels 10, 12 opposite the locking direction, ie in the direction of moving the panels away. Thus, the butt engagement between the locking tab and the holding tab 30 keeps the locking tab 14 locked. The first and second panels 10, 12 are held together because the front edges of the holes engage with the fold line 16 of the panel 10, and as described above, the locking edges of the locking tabs can be removed. 2 panel 12 is supported by the panel portion. The first locking edge is an edge provided on the panel portion 43, and the second locking edge is an edge provided on the panel portion 45.

4 illustrates a second embodiment in which the locking tab 110 and the holding tab 112 are folded in a pair of panels 114 and 116, respectively. The structure and shape of the locking tab 110 and the holding tab 112 are substantially the same as the locking engagement of the first embodiment, and only the differences will be described in more detail. In this embodiment, a pair of opposed cutting lines 118, 120 are formed at the side edges of the retaining tab 112 and are disposed substantially parallel. The panels are interconnected according to the method described above.

The present invention and preferred embodiments relate to locking means of two adjacent panels of wraparound cardboard boxes, which not only provide a satisfactory strength at the locking position but also provide the flexibility of absorbing the load to the panel. It is in the form of having. The shape of the blanks is such that the amount of cardboard required is minimal. The carrier can be formed manually or by a mechanism. It will be appreciated that the present invention is not limited to the wraparound shape and can be applied in various carriers.

Claims (19)

In the cardboard panel panel joining means for overlapping and fixing the first panel 10 and the second panel 12, the first panel 10 includes a locking tab 14 that is folded from the first panel. The locking tab includes a neck portion 20 whose base is hinged to the first panel and a shoulder portion 22 that is continuous with the neck portion, and the second panel 12 has a locking hole folded from the second panel. 48, a retaining tab 30 extending into the retaining tab 30, the retaining tab 30 being displaced from the plane of the second panel so as to receive the locking tab 14 through the locking hole 48. In the paperboard panel joining means abutting with a portion of the locking tab 14 protruding past 22,  The locking hole has a size and or shape that allows the locking tab 14 to move unobstructed through the locking hole, and the locking edge 25 of the locking tab is the locking tab and the first panel 10. And a shoulder portion 22 which interlocks with one or more panel portions 43, 45 of the second panel positioned adjacent the locking hole to maintain the lock overlap with the second panel 12. Carton box panel joining means, characterized in that. The method of claim 1, Carton box panel joining means, characterized in that the holding tab 30 is folded in the second panel (12) to form a locking hole. The method of claim 1, The locking tab 14 is provided in the second panel portion so as to engage the second panel portion 45 opposed to the first panel portion 43 and spaced from the first panel portion around the locking hole. Carton box panel joining means comprising a locking edge. The method according to any one of claims 1 to 3, Carton box panel joining means, characterized in that each said panel portion (43, 45) is located at the distal end corner of the locking hole (48). The method of claim 4, wherein Carton box panel joining means, characterized in that the edge of the corner (C) is curved. The method according to any one of claims 1 to 3, The cutting lines 44 and 46 forming the locking hole 48 are shaped to provide a recess in the plane of the second panel extending along a portion of the side edge of the locking hole, the recess being the locking tab 14. Carton box panel joining means, characterized in that to accommodate the shoulder portion 22). The method according to any one of claims 1 to 3, The holding tab 30 is cardboard box panel joining means, characterized in that it comprises a protrusion on the side edge of the holding tab so that the holding tab is stronger. In a wraparound plank blank comprising a panel joining means having a first panel 10 and a second panel 12, the first panel includes a locking tab 14 that is folded from the first panel. The locking tab has a neck portion 20 at which a base is hinged to the first panel and a shoulder portion 22 continuous with the neck portion, and the second panel has a locking hole folded from the second panel. A retaining tab 30 defining 48, wherein the retaining tab 30 locks the lock tab through the lock hole of a size and / or shape that allows the lock tab to move unobstructed through the lock hole. A portion of the locking tab that is displaced from the plane of the second panel to receive the tab 14 and abuts over the shoulder portion 22 and abuts the locking edge 25 of the locking tab. With tabs, the first panel 10 and the second panel 12 Wrap-around type provided with a panel engaging means characterized in that it is provided on the shoulder portion interlocking with at least one panel portion 43, 45 of the second panel positioned adjacent to the locking hole to maintain the lock overlap state Carton blank The method of claim 8, The retaining tab (30) is a wrap-around cardboard box blank provided with panel engaging means, characterized in that folded in the second panel (12) to form a locking hole. The method of claim 8, The locking tab 14 is provided in the second panel portion so as to engage the second panel portion 45 which is opposed to the first panel portion 43 and spaced from the first panel portion around the locking hole 48. Wrap-around cardboard box blank having a panel joining means, characterized in that it comprises a second locking edge. The method according to any one of claims 8 to 10, A wrap-around cardboard box blank with panel engaging means, wherein each panel portion 43, 45 is positioned at a corner of the distal end of the locking hole. The method of claim 11, Wrap-around cardboard box blank with a panel joining means, characterized in that the edge of the corner (C) is curved. The method according to any one of claims 8 to 10, The cutting line forming the locking hole is shaped to provide a recess in the plane of the second panel that extends along a portion of the side edge of the locking hole, the recess forming a shoulder portion 22 of the locking tab 14. Wrap-around cardboard box blank having a panel engaging means characterized in that it is adapted to receive. The method according to any one of claims 8 to 10, The holding tab 30 is a wrap-around cardboard box blank having a panel engaging means, characterized in that it comprises a protruding portion along the side edge of the holding tab. Wrap-around cardboard box having a panel coupling means formed in any one of claims 1, 2, 3 or 5. delete The method of claim 4, wherein The cutting lines 44 and 46 forming the locking hole 48 are shaped to provide a recess in the plane of the second panel extending along a portion of the side edge of the locking hole, the recess being the locking tab 14. Carton box panel joining means, characterized in that to accommodate the shoulder portion 22). The method of claim 6, The holding tab 30 is cardboard box panel joining means, characterized in that it comprises a protrusion on the side edge of the holding tab so that the holding tab is stronger. Wrap-around cardboard box provided with a panel coupling means formed by claim 7.