JP3077197U - Small square paper box with lid with lock function - Google Patents

Abstract

(57) [Summary] In a small square paper box with a single insertion type lid provided with a folding type inner lid, a lock mechanism for automatically fixing to prevent the upper lid from being lifted in a closed position, and can be used many times Is to provide things. SOLUTION: In a small square paper box with a single insertion type lid provided with a foldable inner lid, an upper lid plate (12) whose lid extends from the upper end of the front surface of the box by a length substantially equal to the width of the side surface of the box, When the side of the box is connected to the upper lid plate, and the upper lid plate is closed, a triangular inner lid folding plate (2) is folded inward.
0), a tongue piece (14) bent downward at a substantially right angle from the front end of the upper lid plate and having a predetermined inclination at the lateral end and the tongue piece rearward from the front end of the tongue piece. A lock piece (16) having a predetermined length shorter than the tongue piece and a lock piece (16) having a predetermined length shorter than the tongue piece; Is provided with a short locking tongue piece (18) to provide a locking function.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 Regarding small square paper boxes with insertable lids used for packaging textile products, confectionery foods, etc., more specifically, small square paper boxes with single-insertion lids with a folding inner lid in those paper boxes. The present invention relates to an upper lid with a lock function used for a device.

[0002]

2. Description of the Related Art Hitherto, a container having a structure as shown in FIG. In this configuration, the inner lid 2 is bent from both side surfaces, and the upper lid 1 provided with the tongue pieces 3 is placed thereon. In this case, it is necessary to open the inner lid 2 after opening the upper lid to take out the contents, which is troublesome, and when storing the contents, the inner lid must be taken care of. Sometimes it bends and you have to pull it up later.

To avoid this disadvantage, there is a configuration as shown in FIG. As shown in FIG. 2, instead of the inner lid 2 shown in FIG. 1, a connecting portion 4 for connecting a side end of an upper lid plate to a side surface of a box body is formed and folded. This compensates for the drawbacks of FIG. 1, but because the folded part is doubled through the fold, when the top lid is closed, there is elasticity to lift the top lid upward, which makes the top lid properly Stuck in closed position. Therefore, there is a disadvantage that the upper lid needs to be fixed to the main body with a seal or the like.

[0004]

[Issues to be solved by the invention]

 It is an object of the present invention to provide a small square paper box with a foldable inner lid and a single insertion type lid, which is a lock mechanism for automatically fixing the upper lid so as not to be lifted up in a closed position and which can be used many times.

[0005]

[Means for Solving the Problems]

 In a small square paper box with a single insertion type lid having a foldable inner lid, an upper lid plate whose lid extends from the upper end of the front surface of the box by a length substantially equal to the width of the side surface of the box; When the lid plate is combined and the upper lid plate is closed, a triangular middle lid folding plate that is folded inward and a predetermined length that is bent downward substantially at a right angle from the front end of the upper lid plate. A tongue piece having a predetermined inclination at a lateral end, a lock piece having a predetermined length shorter than the tongue piece and being bent rearward from the front end of the tongue piece at a predetermined angle to the tongue piece; This is achieved by providing a locking tongue piece which is bent downward from the upper end of the rear surface into the box and is slightly shorter than the tongue piece.

[0006]

[Embodiment of the invention]

 Referring to FIG. 3, there is shown a perspective view of the square paper box 10 according to one embodiment of the present invention, in which the lid is opened halfway. FIG. 4 is an exploded view of the upper portion of the square paper box 10, and the main parts of the upper cover are the upper cover plate 12, the tongue piece 14, the lock piece 16, the side of the upper cover plate 12 and the side 24 of the box, The lock tongue piece 18, which is constituted by folding plates 20, 20 which connect the upper end of the box 24 and serves as an inner lid, and which constitutes a locking mechanism, extends inward from the rear surface 26 of the box. The tongue piece 12 is inclined at the lateral end for the reason described below.

In this embodiment, a paperboard having a thickness of 0.5 mm is used, the length of the upper cover plate 12 is 40 mm, the length of the tongue piece 14 is 18 mm, the length of the lock piece 16 is 5 mm, and the length of the lock tongue piece 18 is The length is 17 mm. The tongue piece 14 is bent at a substantially right angle to the upper cover plate 12 in a direction toward the inside of the box, and the lock piece 16 is bent to form an acute angle outward with respect to the tongue piece 14. The lock tongue piece 18 is bent about 45 ° inward of the box with respect to the rear surface 26 of the box.

[0008] Referring to FIGS. 5 to 8, sectional views taken in the center of the box are shown at an initial stage, an intermediate stage, a stage immediately before locking, and a stage at which the lid is closed, respectively. The box is made of paperboard that has enough elasticity to return to its original direction from the angle of folding when folded. Therefore, when the upper lid plate 11 is pushed down so that the tip of the lock piece 13 contacts the lock tongue piece 14 in a state where the side surfaces of the box are assembled, the state shown in FIG. 5 is obtained. At this time, the side edge of the tongue piece 14 and the edge of the folding plate 20 are not in contact with each other. When the upper lid plate is further depressed, the lock piece 16 advances while sliding on the surface of the lock tongue piece 18, and when there is nothing to restrain the side edge of the tongue piece 14, the force of the tongue piece 14 to push down the lock tongue piece 18 is weak. The angle of the tongue piece 14 with respect to the upper lid plate 12 is reduced. However, when the movement is restricted by the side edge of the tongue piece 14 contacting the edge of the folded plate 20, the angle between the tongue piece 14 and the top cover plate 12 is not reduced, and the lock tongue is not reduced. A force is generated that pushes the piece 18 down. In this embodiment, when the surface of the tongue piece 14 advances toward the front of the box about 7 mm as viewed in the plane of the upper end of the box, the side edge of the tongue piece 14 becomes the edge of the folding plate 20. It is preferable to determine the inclination of the side edge of the tongue piece 14 so as to come into contact with the tongue. Since the edge of the folding plate (20) extends in the direction of about 45 ° at the corner of the box, the width of the tongue piece 14 at about 12 mm from the upper end of the tongue piece 14 is reduced by about 7 mm on one side. The desired effect can be obtained by giving the side edge of the tongue piece 14 an inclination as described above. With such a configuration, when the upper lid plate 12 is further pressed down, the side edge of the tongue piece 14 returns to the rear surface 26 of the box while contacting the edge of the folding plate 20, and at the same time, the lock tongue piece 18 is pressed. As shown in FIG. 7, when the tip of the lock piece 16 passes the tip of the lock tongue piece 18 near the top cover plate 12 reaching the top end of the box, the locked state shown in FIG. In this state, since the upward elastic force of the folded folding plate does not act in the direction of pulling the tongue piece 14, the tongue piece 14 does not come off from the lock tongue piece 18, and the lid resists the upward force of the folding plate 20. Lock securely.

When the closed box is opened, the lock is easily released by pressing near the center of the upper end of the rear surface 26, and the lid is opened lightly by the cooperation of the elasticity of the lock tongue piece 18 and the upward elasticity of the folded portion. However, depending on the application, the purchaser uses a method in which the finger is opened at the center of the lid, and as shown in Fig. 9, a half-moon is formed by folding a pseudo-elliptical shape with a perforated center at the upper end of the front plate. A shape notch may be provided. Further, depending on the product, a half-moon-shaped notch may be provided in advance at the center of the upper end of the front plate as shown in FIG.

[0010]

[Effect of the invention]

 Since the lock mechanism of the upper cover of the square paper box having the foldable inner cover of the present invention is configured as described above, it has a very simple structure and reliably prevents the elasticity of the foldable inner cover. Can be locked. In addition, when opened, the elasticity of the inner lid is an advantage, and the lid can be easily opened simply by pressing the upper end of the back of the box in cooperation with the elasticity of the lock tongue, so it is used as a container that opens and closes multiple times Very suitable for

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional single-folded square paper box with a middle lid.

FIG. 2 is a perspective view of a conventional folding paper box with a middle lid.

FIG. 3 is a perspective view of an embodiment of the folding paper box with a foldable inner lid according to the present invention;

FIG. 4 is a development view of an upper half of the square paper box of FIG. 3;

FIG. 5 is a central longitudinal sectional view of a first stage of the upper cover closing operation of the square paper box of FIG. 3;

6 is a central longitudinal sectional view at an intermediate stage of the upper cover closing operation of the square paper box of FIG. 3;

FIG. 7 is a central longitudinal sectional view of the square paper box of FIG. 3 in a stage immediately before the upper cover closing operation is locked.

8 is a central longitudinal sectional view of the square paper box shown in FIG. 3 in a locked state of the upper cover closing operation.

FIG. 9 is a rear view of another embodiment of the rear surface of the box of FIG. 3;

FIG. 10 is a rear view of still another embodiment of the rear surface of the square box of FIG. 3;

[Explanation of symbols]

 12 upper lid plate 14 tongue piece 16 lock piece 18 lock tongue piece 20 folding plate

Claims (3)

[Utility model registration claims] 1. A small rectangular paper box with a foldable inner lid having a single insertion type lid, wherein the lid extends from the upper end of the front surface (22) of the box by a length substantially equal to the width of the side surface (24) of the box. A lid plate (12), a side surface (24) of the box and the upper lid plate (12) are combined,
When the upper lid plate (12) is closed, a triangular inner lid fold plate (20, 20) that is folded inward, and bent downward at a substantially right angle from the front end of the upper lid plate (12). A tongue piece (14) having a given length and a predetermined inclination at a lateral end;
4) is bent at a predetermined angle with the lock piece (16) having a predetermined length shorter than the tongue piece (14), and bent downward from the upper end of the rear surface (26) of the box to the inside of the box. A small square paper box provided with a locking lid having a locking tongue piece (18) slightly shorter than the tongue piece (14). 2. The square paper box according to claim 1, further comprising a perforated half-moon cutout (50) in the center of the upper end of the rear surface (26) of the square paper box. 3. The square paper box according to claim 1, wherein a half-moon-shaped recess for finger hanging is provided in the center of the upper end of the rear surface of the square paper box.