JP2015199501A - paper box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper box in which a large tensile force is not required when separating a movable plate part from a fixed plate part, an intermediate plate is not separated when manufacturing the box, and the box can be easily opened.SOLUTION: A division line 19 is provided in an intermediate plate 9 disposed inside a paper box body. The division line 19 is formed of linear and discontinuous notches 16, 17, 18 and joints 26 between the notches. An extension notch 28 is formed continuously to one notch 16 among the one notch 16 and another notch 17 with the joint 26 disposed therebetween so as to go around the other notch 17 in a non-contact state and be adjacent to the other notch 17 in parallel. Between the other notch 17 and the extension notch 28, joint breaking means 27 in which the end edge side of the extension notch 28 as a rotation base is rotatable in a pulling direction when pulling the intermediate plate 9 is provided. The end part of the joint breaking means 27 on the joint side 26 is bent in a direction orthogonal to a longitudinal direction of the joint breaking means 27 and formed continuously to the joint 26.

Description

  The present invention relates to a paper box, in particular, a paper box that facilitates separation of a part of paperboard constituting the paper box as an opening operation performed by a user of the paper box, and prevents the separation part from being separated in the manufacturing process of the paper box. It is.

  Conventionally, one type of paper box that contains granular confectionery has an outlet on one of the face plates that make up the outer surface, and the outlet can be opened as needed to remove the contents by swinging out. There is something that you can do. As a more specific structure, regarding the opening and closing of the outlet, the middle plate is arranged on the inner side of the paper box main body of the face plate with the outlet, and the outlet is closed from the inside of the box, The middle plate is moved up and down in conjunction with the pivoting operation to open one side of the top plate at the center of rotation and the closing pivoting operation to return the top plate, and the middle plate is pulled upward. The paper outlet is opened, and there is a paper box in which the outlet is closed again when the middle plate is lowered from the open state of the outlet, and the granular confectionery is spouted from the outlet opened by the operation on the top panel. I was trying to do it.

  In order to obtain the paper box by assembling a single blank, for example, as shown in Patent Document 1, the middle plate is configured in a single blank and interlocked with the movement on the top plate side. The part that moves in this way (the part that includes the part that closes the outlet) and the part that is fixed to the paper box body and does not move, and the moving part and the fixed part are discontinuous in a straight line. Some of them are connected via a dividing line. In such a paper box, as described above, the moving part can be moved by cutting the connection between the notch in the dividing line by the opening rotation operation on the top plate side at the time of opening. It was.

  The above-mentioned paper box, which is a part of the middle plate and the part corresponding to the outlet is separated from the part that is fixed to the middle plate when opened, can also take out the granular storage from the outlet. The paper box follows a vertically long shape. As an example, the structure of the paper box of Patent Document 1 will be schematically described as follows.

  As shown in FIG. 7, first, a front plate b having an opening serving as an outlet port a, left and right side plates c and d, and a back plate e are connected in series, and a part thereof is a sticking region f. When the body is pasted (sack pasted), the inner side plate g is laminated and laminated on the inner side of one side plate c, and the inner side plate h is connected to the inner side plate g, and the corner after the sack is pasted. When the body portion is assembled as a columnar shape or the like, the middle plate h is arranged along the inner surface side of the front plate b in the paper box body. (See Figure 8)

  The front plate b, the left and right side plates c and d, and the back plate e are respectively connected to the bottom plate with a bottom closing face plate, and the side plates c and d are connected with the lower flap i and folded. The inner bottom plate j is connected and folded to the front plate b, and the outer bottom plate k connected to the rear plate e is folded and bonded to the inner bottom plate j.

  Similarly, face plates for closing the top are connected to the upper ends of the left and right side plates c, d and the back plate e, and the upper flap l is connected to the upper ends of the side plates c, d and folded. ing. An inner top plate m as a sticking plate is connected to the upper end of the middle plate h and bent so as to overlap the upper flap l, and a connected outer top plate n is folded on the upper end of the back plate e. It was pasted together. (Fig. 9)

  In the middle plate h, a dividing line p formed by discontinuously disposing two linear cuts o at a height position lower than the height position corresponding to the outlet port a extends in the middle plate width direction. The upper part of the box is the moving plate part q and the lower part of the box is the fixed plate part r. The moving plate q itself is connected to the inner top plate m at the top and is connected to the fixed plate r via the dividing line p, but is not directly connected to the inner plate g and is fixed. The plate portion r is connected to the inner side surface plate g through the folded portion.

  Then, when opening, the top plate side (outer top plate and inner surface plate) is rotated upward so that the upper end portion of the back plate is the center of rotation, so that it is between the notches o and o in the dividing line p. The connecting face s is broken, whereby the moving face plate q moves to the upper side of the box, and the outlet port a is opened. The moving plate portion q includes a locking plate portion t extending in a region where the side portion corresponding to the moving plate portion q of the inner side surface plate g is cut out, and is moved upward when the moving plate portion q moves upward. It is configured to be positioned so as to be locked to the flap l so as not to move to a position above the position at which the outlet a is opened.

U.S. Pat. No. 4,081,128

  In the paper box described above, a dividing line is provided across the width direction of the middle plate so that the moving plate portion of the middle plate is pulled up by pulling from the upper side of the box, and the moving plate portion is In order to prevent the pulling operation from requiring such a pulling force, it is only necessary to reduce the width of the connection between the cuts. In FIG. 9, the pulling direction is indicated by an arrow A.

  However, the direction of the dividing line is a direction perpendicular to the crease between the inner side plate and the rear plate, and when the sack is pasted, that is, the inner side plate with the middle plate connected is used as a paper box for the rear plate. As the folding vibration is transmitted when folded on the inner surface side of the main body, there is a high possibility that the connecting part of the dividing line is broken and the moving plate part is separated as shown in FIG. 10, and the connecting width is reduced. I can't. Therefore, a relatively large force is required when pulling up the moving plate portion when opening the box that has been boxed. In consideration of the openability on the general user side, the thickness and type of the packaging material of the paper box are also considered, and there is a problem that it is very difficult to design the dividing line. The folding direction of the inner side plate and the middle plate when the sack is applied is indicated by an arrow B in FIG.

  Therefore, in view of the circumstances described above, the present invention provides a tensile force for separating the movable plate portion from the fixed plate portion while preventing the connecting portion of the dividing line from breaking when the blank is folded on the sack. It is an object of the present invention to provide a paper box in which an intermediate plate is not separated during box making and can be easily opened.

(Invention of Claim 1)
The present invention has been made in consideration of the above problems, and has an inner plate on the inner side of the paper box body, and the intermediate plate is moved up and down by pulling the middle plate from the upper side of the paper box body. A dividing line formed by discontinuous incisions linearly formed in a direction orthogonal to the direction of the pulling so as to be divided is provided, and the intermediate plate is a moving plate portion on the upper side of the paper box body and the moving plate. And a fixed plate portion connected to the portion through the dividing line, and the connection between the adjacent cuts at the dividing line is broken by the pulling operation, and the movable plate portion is fixed. In a paper box that can be pulled up separately from the plate part,
Of one notch and the other notch that are adjacent to each other with the joining of the dividing lines, the length of the dividing line from one end of the notch to the other incision side A first extension that extends in an oblique direction that intersects the vertical direction and does not intersect the other notch, and extends from the first extension along the length of the dividing line and is parallel to the other notch. The extension notch consisting of the adjacent second extension is continuous,
Between the other notch and the extension notch, the direction perpendicular to the pulling direction from the joint to the end of the extension notch is the longitudinal direction, and the end of the extension notch during the pulling with respect to the middle plate serves as a rotation base. A thin plate-like tether breaker that is rotatable in the pulling direction is provided,
An end portion of the joint breaking means on the joining side is bent in a direction perpendicular to the longitudinal direction of the joint cutting means and is continuous with the joint, thereby providing a paper box that solves the above problem. Is.

(Invention of Claim 2)
And in the above invention, the connection in the dividing line is provided at a position that is symmetrical with the center line passing through the center of the dividing line perpendicular to the dividing line, and the connection breaking means that continues to the connection includes: It is possible to make the shape symmetrical with respect to the center line.

(Effect of the invention of claim 1)
According to the present invention, one of the notches and the other notch facing each other with the dividing line connected to each other is connected to an extension notch that does not intersect the other notch, and the other notch and the extension notch Since the joint breaking means is provided between the end portions of the joint breaking means, the end of the joint breaking means is bent in the direction perpendicular to the longitudinal direction of the joint cutting means and is continuous with the joint. When the portion is pulled and moved to the upper side of the box, the joint breaking means rotates in the pulling direction with the terminal end side of the extended cut as the rotation base.

  And, at the joint side end of the joint breaking means, at the time of starting to twist, the portion along the extended cut from the joint side end of one of the cuts works against the twist deformation, Stress concentrates around the end of the other notch on the joining side, and this concentration of stress causes a tear to occur from the end of the other notch and breaks the joint.

  On the end side of the extension notch in the joint breaking means (rotation base side of the joint breaking means), there is a possibility that stress is concentrated around the end of the extension notch by turning the joint breaking means. Since the portion along the notch extends linearly, deformation at the time of rotation of the joint breaking means occurs in a relatively wide area, and stress can be prevented from concentrating around the end of the extension notch. Therefore, the terminal end side of the extended cut by the joint breaking means remains on the fixed plate portion side as a turning base portion (when the turning base portion is on the fixed plate portion side), and the joint is reliably broken. That is, the breaking position of the joint breaking means can be set in advance.

  Therefore, it is not necessary to make the connecting line of the dividing line narrow so that it is easy to affect the box making, the box is well formed, and the moving plate portion of the intermediate plate can be easily pulled. It has the effect that a paper box is obtained.

(Effect of the invention of claim 2)
According to the invention of claim 2, since the plurality of connecting breaking means provided on the dividing line have a symmetrical shape with the center of the dividing line in between, even when pulling up the movable plate part, it has a symmetrical relationship. The joint breaking means rotate in directions opposite to each other. For this reason, the moving plate portion can be pulled up satisfactorily without being slid in contact with the side plate or the like due to shaking in the pulling direction.

It is explanatory drawing which expands an example of the paper box which concerns on this invention, and shows the box outer surface side in the state of a blank. It is explanatory drawing which shows the state which folded up some face plates at the time of sack pasting. It is explanatory drawing which shows an example of a paper box. It is explanatory drawing which expands and shows the part of the dividing line of the intermediate board in an example. It is explanatory drawing which shows the state of the dividing line at the time of a movement board part moving to a tension | pulling direction. It is explanatory drawing which shows the state which the moving plate part isolate | separated from the fixed plate part. It is explanatory drawing which expands the conventional paper box and shows the box inner surface side in the state of a blank. It is explanatory drawing which shows the trunk | drum part of a paper box in a cross section. It is explanatory drawing which shows the state which pulled up the moving board part in the conventional paper box, and opened the outlet. It is explanatory drawing which shows the state which a movement board part isolate | separates at the time of folding of sack pasting.

  Next, the present invention will be described in detail based on the embodiment shown in FIGS. FIG. 1 shows a face plate constituting a paper box 1 according to the present invention as a box outer surface side in a developed state, and a face plate constituting the conventional paper box shown in FIGS. Is basically the same. As shown in FIG. 1, a front plate 3 in which a swinging opening 2 that is an opening is brought close to the upper end in a gently curved shape convex downward in the box height direction, left and right side plates 4, 5, The back plate 6 is connected in a horizontal series. Further, an inner side plate 8 that is bonded to the inner surface side of the side plate 4 by sack pasting as a pasting region so as to extend in the box height direction is connected to the rear plate 6, and the inner side plate 8 is connected to the inner side plate 8. 9 are connected, and the middle plate 9 is disposed along the inner surface side of the front plate 3 on the paper box body when the body is assembled as a prismatic shape after the sack is applied.

  As shown in the figure, face plates for closing the bottom are connected to the lower ends of the front plate 3, the left and right side plates 4, 5 and the back plate 6, respectively. The flap 10 is connected and folded, the inner bottom plate 11 is connected to the back plate 6 and folded so as to overlap the lower flap 10, and the outer bottom plate 12 connected to the front plate 3 is folded and folded. It is bonded to the bottom plate 11.

  Similarly, face plates for closing the top are connected to the upper end sides of the left and right side plates 4, 5 and the back plate 6. An upper flap 13 is connected to each upper end of the side plates 4 and 5 and folded. An outer top plate 14 as a sticking member is connected to the upper end of the middle plate 9 and is folded so as to overlap the upper flap 13 that is folded, and an inner top plate 15 connected to the upper end of the back plate 6 is folded. The outer top surface plate 14 and the inner top surface plate 15 are integrated together to form one top surface plate.

  The middle plate 9 is provided at a height position lower than the height position corresponding to the outlet 2 and a dividing line 19 formed by discontinuously arranging three straight cuts 16, 17, 18 is provided on the middle plate. It is provided over the width direction. And like the case of the conventional paper box, the box upper part side is made into the movement board part 20, and the box lower part side is divided into the upper and lower sides, and the movement board part 20 and the stationary plate part 21 are divided. Both plate portions 20 and 21 are connected to each other through a dividing line 19 to be connected.

  The fixed plate portion 21 is connected to the inner side plate 8. In order to facilitate the movement to the upper part of the box in the moving plate part 20, the space between the inner side plate 8 and the inner side plate 8 is cut away, and the moving plate part 20 is directed to the moving plate part 20 on the upper side of the inner side plate 8. Only the protruding support portion 22 is connected to be easily separated. Further, the moving plate portion 20 has a locking plate portion 23 for stopping the movement toward the upper portion of the box by being pulled up to the upper portion of the box and being locked to the upper flap 13. It is formed by making the both sides into a notch shape with a step.

  Further, on the side of the dividing line 19 of the moving plate part 20, the moving plate part 20 is not separated from the fixed plate part 21 and is a position not opposed to the swinging opening 2, up to a predetermined height position. A notch portion 25 is provided at a position that overlaps with the swing-out port 2 when reaching the position (to the position positioned by locking with the upper flap). As shown in the drawing, the notch 25 reaches the notch 17 located at the center of the separation line 19 and is formed as a semicircular opening.

  As shown in FIG. 3, the paper box 1 is formed into a vertically long shape with the outer surface of the body part being a front plate 3, left and right side plates 4, 5, and a back plate 6, and the bottom of the box is the inner bottom plate 11 and the outer bottom. The upper portion of the box is closed by overlapping the outer top surface plate 14 and the inner top surface plate 15.

  The opening of the paper box 1 is the same as in the conventional example described above, and the claw portion cut and raised at the folding portion between the movable plate portion 20 and the outer top plate 14 at a position slightly above the arc-shaped portion at the upper end of the front plate 3. By moving the top of the box upward while placing the fingertip on 25 or the like, the moving plate portion 20 is separated from the fixed plate portion 21 at the position of the dividing line 19 having the structure described later. The notch 24 is overlapped with the upper edge portion of the outlet 2 by pulling up to the height position at which the movable plate portion 20 that has closed the outlet 2 from the inside of the box is positioned, and the outlet 2 Is released. The direction of pulling is indicated by an arrow A in FIG.

  Further, the movable plate part 20 is moved toward the bottom of the box by performing a return rotation operation on the top plate side at the top of the box, and the cutout part 24 is lowered to the lower position from the lowest part of the outlet 2. It will be closed again. In addition, the part shown as a broken line in the blank state has shown the crease | fold rule, and it folds up and raises at this position, and the paper box 1 is obtained by bonding a required position.

(Partition line)
In the dividing line 19, as shown in the drawing, three cuts 16, 17, 18 each being a straight line are provided in a straight line and discontinuously arranged across the width direction of the intermediate plate 9. Among the three cuts, the central cut 17 is formed long, and a short cut 16 inserted from the free end of the intermediate plate 9 is aligned with the cut 17 with the joint 26 in between, and is inserted from the inner side plate 8 side. A short notch 18 is similarly aligned with the notch 17 with the tether 26 in between.

  In the present invention, the connecting breakage means 27 is provided so as to be continuous with each of the above-described connections 26, and the connection breakage means 27 causes the connection 26 to break when necessary. In this embodiment, the two tethers 26 are in symmetrical positions with a center line passing through the center of the dividing line 19 in a direction perpendicular to the longitudinal direction of the dividing line 19 (also the center line of the moving plate portion). is there.

  And the two joint breaking means 27 continuing to the joint 26 are provided in a symmetrical shape with the center line in between. In the following, one of the two joint breaking means is described. However, the other joint breaking means is one of the joint breaking means, except that the other joint breaking means is symmetrical in position and shape. The description is omitted because it is the same as.

(Connecting breakage means)
Of the short notch 16 and the long notch 17, an extended notch 28 that is located on the fixed plate 21 side and enters the lower position of the notch 17 is connected to the connecting 26 side of the notch 16. doing. As shown in an enlarged view in FIG. 4, the extended cut 28 extends from the end of the cut 16 on the connection 26 side in an oblique direction on the cut 17 side and intersecting the length direction of the dividing line 19. The first extension 29 that does not intersect with the notch 17 and a linear shape that extends from the end of the first extension 29 along the length of the dividing line 19 and is parallel to the notch 17. Of the second extension 30. In addition, although the said 1st extension part 29 is made into linear form in the figure, it may be a loose arc shape which becomes a little convex toward the fixed plate part 21 side.

  Between the long cut 17 and the extended cut 28, the extended cut 28 continues from the end of the short cut 16, thereby forming the thin plate-like joint breaking means 27. The joint breaking means 27 is in the form of a thin plate having a direction perpendicular to the direction of pulling the intermediate plate 9 (moving plate portion 20) from the joint 26 to the end (terminal) side of the extension cut 28 as a longitudinal direction. In addition, when the intermediate plate 9 is pulled, the terminal end 31 of the extension cut 28 becomes a rotation base and can rotate in the pulling direction (arrow A direction).

  Further, the end portion 32 on the side of the joint 26 of the joint breaking means 27 is bent in a direction perpendicular to the longitudinal direction of the thin plate-like portion of the joint cutting means 27 by the incision formation of the first extension portion 29. The end portion 32 on the connecting 26 side of the connecting breaking means 27 is bent toward the moving plate 20 side and continues to the connecting portion 26.

  As described above, in the joint breaking means 27, the end side 31 of the extension cut 28 is made to be turnable in the pulling direction, and the end of the joint breaking means 27 on the joint 26 side is configured to be rotatable. 32 is bent in a direction orthogonal to the longitudinal direction of the connection cutting means 27 and is continuous with the connection 26. Therefore, when the moving plate portion 20 is pulled and moved to the box upper side, the connection breaking means 27 is The extension cut 28 is rotated in the pulling direction with the terminal end side of the extension cut 28 as a rotation base. See Figure 5

  When twisting starts at the end portion 32 of the joint breaking means 27 on the joint 26 side, the portion along the first extension portion 29 of the extension cut 28 functions to resist the twist deformation. On the other hand, since there is no margin for deformation or extension of the packaging material around the end portion of the notch 17 on the connecting 26 side, stress is likely to collect, and the notch 17 is also affected by the drag generated at the portion along the first extension 29. The concentration of stress around the end on the side of the connection 26 increases. That is, although the portion 33 along the first extension portion 29 at the end portion 32 on the connection portion 26 side of the connection breaking means 27 is in a state of being stretched, the notch 17 is obtained by advancing the rotational movement. The degree of stress concentration around the end on the side of the connection 26 increases. Due to the concentration of the stress, a tear 34 is generated from the end of the notch 17 and the joint 26 is surely broken. See FIG. 5 and FIG.

  In the above embodiment, the structure in which the joint breaking means 27 is located on the fixed plate portion 21 side is illustrated, but the present invention is not limited to this, and the joint breaking means 27 is located on the movable plate portion 20 side. You may make it do. In addition, it is preferable that the breaking line 27 is symmetrically arranged in the dividing line 19 with the center line in between, and is preferably symmetrical. However, the present invention is not necessarily limited to this, and there are an odd number of connecting lines in the dividing line. In addition, a structure in which each of the connecting and breaking means is continuous may be used.

DESCRIPTION OF SYMBOLS 1 ... Paper box 2 ... Outlet 9 ... Middle plate 16, 17, 18 ... Notch 19 ... Dividing line 20 ... Moving plate part 21 ... Fixed plate part 23 ... Locking plate part 25 ... Nail | claw part 26 ... Connection 27 ... Joint break means 28 ... Extension cut 29 ... First extension 30 ... Second extension 33 ... Part along the first extension 34 ... Rupture

Claims (2)

An inner plate is provided on the inner side of the paper box main body, and in the direction perpendicular to the pulling direction, the inner plate is divided into upper and lower parts by pulling the middle plate from the upper side of the paper box main body. A dividing line formed by discontinuous incisions formed in a straight line is provided, and the intermediate plate is connected to the moving plate portion on the upper side of the paper box body and the fixed plate portion connected to the moving plate portion via the dividing line. In the paper box in which the connection between the notch and the notch at the dividing line is broken by the pulling operation, and the movable plate part can be separated and lifted from the fixed plate part,
Of one notch and the other notch that are adjacent to each other with the joining of the dividing lines, the length of the dividing line from one end of the notch to the other incision side A first extension that extends in an oblique direction that intersects the vertical direction and does not intersect the other notch, and extends from the first extension along the length of the dividing line and is parallel to the other notch. The extension notch consisting of the adjacent second extension is continuous,
Between the other notch and the extension notch, the direction perpendicular to the pulling direction from the joint to the end of the extension notch is the longitudinal direction, and the end of the extension notch during the pulling with respect to the middle plate serves as a rotation base. A thin plate-like tether breaker that is rotatable in the pulling direction is provided,
The paper box, wherein an end portion of the joint breaking means on the joint side is bent in a direction orthogonal to the longitudinal direction of the joint cutting means and is continuous with the joint.   The connection at the dividing line is provided at a position that is symmetrical with the center line passing through the center of the dividing line perpendicular to the dividing line, and the connection breaking means that continues to the connection has the center line in between. The paper box according to claim 1, wherein the paper box has a symmetrical shape.

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