JP2016097985A - Packing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing box capable of easily opening a lid part by small force, and capable of surely maintaining a closing state of the lid part.SOLUTION: A projection-shaped part 102 is provided in an insertion piece part 100 linked from a lid part 90, and a notch part K3 is provided between the projection-shaped part 102 and the lid part 90, and a corner part 104 is provided on the tip side of the insertion piece part 100, and a slantingly formed side part 100d is provided over the projection-shaped part 102 from the corner part 104. An opening part K is provided in a linking part between a front part 10 and a front flap 70, and the opening part K composes a notch part K1 formed in the front part 10, and a notch part K2 provided in the front flap 70, and the notch part K2 comprises a notch part K2a and a notch part K2b, and a width of the notch part K2b is provided so that the insertion piece 100 can be inserted, and a width of the notch part K2a is formed larger than the width of the notch part K2b.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a packaging box, and more particularly to a packaging box that can reliably lock a lid and can be easily opened.

  Conventionally, various packaging boxes that can securely lock the lid portion and can be easily opened are known. For example, the packaging box shown in FIGS. There is a cardboard box.

  The packaging box shown in FIGS. 15 and 16 is formed with a protruding portion 120 at the tip of the lid portion 90, while a long hole 130 into which the protruding portion 120 can be inserted is formed at an opening / closing fulcrum portion of the lateral flap 132 of the front portion 10. A semicircular cutout 134 is formed below the long hole 130. In this prior art, when the lid 90 is opened from the closed packaging box 140 as shown in FIG. 13, a finger is pushed against the protrusion 120 at the tip of the lid 90 exposed on the back side of the notch 134. The lid 90 is pushed upward while being applied.

  In the cardboard box described in Patent Document 1, a protrusion 5 is formed at the tip of the outer flap 3, and a long hole 6 into which the protrusion 5 can be inserted is formed at the opening / closing fulcrum portion of the inner flap 4. A first cut-and-raised portion 7 having a lower side as a fulcrum is formed below the middle, and a second cut-and-raised portion 8 having an upper side as a fulcrum is formed inside the first cut-and-raised portion 7. A fitting hole 9 into which the cut and raised portion 8 can be fitted is formed in the protruding portion 5. In this conventional example, as shown in FIGS. 1 and 2, the lower part of the second raised part 8 is pulled from the fitting hole 9 in the outer flap 3 by pulling the upper side of the first raised part 7 with a finger. The cardboard box 1a can be opened by moving to the outside and unlocking.

JP-A-8-72867 (FIGS. 1 and 2)

  In the packaging box of FIG. 15 and FIG. 16, the lid 90 is opened by pushing the lid 90 up by pushing a part of the surface of the projection 120 located at the back of the notch 134. When the frictional force between the front portion 10 and the front portion 10 is strong, or when an elderly person with weak force opens the lid portion 90, the opening operation is not easy. In particular, in a large packaging box, the contact area between the projecting portion 120 and the front surface portion 10 is large and the frictional force is large. To open the lid portion 90 by applying a force to a small point at the back of the notch 134, open the lid portion 90. At this time, the force required for the fingertip has become considerably large, and the opening operation has been difficult. Further, since the protruding portion 120 inserted into the long hole 130 is not in a locked state with respect to the long hole 130, there is a possibility that the fixing of the protruding portion 120 to the front portion 10 may not be reliable.

  Further, in the corrugated cardboard box described in Patent Document 1, there is a possibility that the second cut-and-raised 8 is not inserted into the fitting hole 9, and the outer flap 3 is unintentionally opened, or conversely, Even if the cut-and-raised portion 7 was pulled forward, the second cut-and-raised portion 8 did not come off from the fitting hole 9, and there was no certainty in opening and closing the outer flap 3.

  Therefore, the problem to be solved by the present invention is to solve the above-mentioned problems of the prior art, and the lid can be easily opened with a small force, and the closed state of the lid is reliably maintained. It is to provide a packaging box that can.

  The present invention has been created to solve the above-described problems. First, the front surface portion (10), the right side surface portion (20), the left side surface portion (30), the back surface portion (40), and the bottom surface portion. (60), a lid portion (90) continuously provided via a broken line from the upper side of the back surface portion, and a continuous line via a broken line from the side portion on the tip side of the lid portion. A packaging box having a plug-in piece (100) and a front flap (70) connected from the upper side of the front part via a broken line, the packaging box being formed of a sheet-like blank ("1 sheet An opening surrounded by a notch (K2) formed along the side on the front side of the front flap and the side on the front flap side of the front flap. In the left-right direction in the left-right direction at the line between the front and front flaps A cut line formed between a first broken line (C10a) that is a broken line on the first side that is one side and a second folded line (C10b) that is a folded line on the other side in the left-right direction. The first end side portion (70a) that is a side portion that forms the end portion on the first side of the notch portion, and the left and right side portions (70b, 70d, 70f) and a second end side portion (70e) that forms an end portion on the second side of the notch portion, and the insertion piece portion is a projecting portion protruding to the first side. A protrusion (102), a tip end corner (104) projecting on the tip end side opposite to the lid portion side of the insertion piece, and an engagement protrusion and a tip end corner are formed. And an inclined side portion (100d) that is a side portion formed so as to be inclined toward the second side of the insertion piece portion, and for engagement. An engagement notch (K3) is formed between the shape portion and the side portion on the distal end side of the lid portion, and the end portion on the first side of the engagement protrusion is the first portion of the notch portion in the left-right direction. The end side corner portion is in a range from the end portion on the first side to the end portion on the second side of the cutout portion in the left-right direction. When the tip portion is brought into the closed state, when the tip side corner portion is made to enter the cutout portion, the inclined side portion comes into contact with the first side portion, and the insertion piece portion is further lowered so that the inclined side portion is the first side portion. By descending while abutting on the side, the insertion piece part descends while sliding to the second side together with the distal end side of the lid, and when the engaging projection passes through the first side, the distal end of the lid An engagement region (70R) that is a region adjacent to the first side of the first side portion of the front flap by returning to the state before the side slides to the second side Is inserted into the engagement notch, the engagement protrusion and the engagement area engage, and the packaging box is locked in the closed state, and the lock is released from the state in which the packaging box is locked in the closed state. In doing so, the insertion piece is moved to the second side by sliding the distal end side of the lid to the second side, and the engagement protrusion and the engagement area are disengaged. It is characterized by that.

  According to the packaging box of the first configuration, the packaging part can be unlocked only by sliding the lid part in the lateral direction, and the lid part may be rotated upward once the locking is released. The lid can be easily opened with a small force.

  Further, when the lid portion is closed, the engaging protruding portion is utilized by utilizing the force that the distorted packaging box is restored by sliding the insertion piece portion and the side portion on the distal end side of the lid portion laterally. Since the engagement region is engaged, the lock is naturally performed only by lowering the insertion flap, and thus the closed state of the lid can be reliably maintained.

  Second, a box body (3) having a front part (10), a right side part (20), a left side part (30), a back part (40) and a bottom part (60), A lid part (90) provided continuously from the upper side via a broken line, an insertion piece part (100) provided continuously from a side part on the distal end side of the lid part via a broken line, and a broken line from the upper side of the front part And a front flap (70) continuously provided in a package, wherein the packaging box is formed by a sheet-like blank (may be "formed by one sheet-like blank"), and the front of the front flap The opening surrounded by the notch (K2) formed along the side part on the part side and the side part on the front flap side of the front part is left and right at the broken line between the front part and the front flap in the left-right direction. A first broken line that is a broken line on the first side that is one side in the direction C10a) and a second broken line (C10b) that is a second-side broken line that is the other side in the left-right direction, and the notch is a first notch component (K2a) provided on the first side. ) And a second notch constituent part (K2b) continuously provided on the second side from the first notch constituent part, and the first notch constituent part includes a first notch constituent part. 1 side part (70a) which forms the edge part of 1 side, the 2nd edge part (70b) formed in the left-right direction, and the 2nd edge part of the 2nd side part were provided in a row A third side (70c) is formed, and the second notch component is connected to the end of the third side opposite to the second side, and is formed in the left-right direction. A side part (70d) and a fifth side part (70e) forming an end part on the second side of the second notch constituent part are formed, and the first notch has a width of the first notch constituent part. Number of components The first width (NK2a), which is the width between the front end and the base end in the region along the side and the direction between the front end and the base end in the direction perpendicular to the left-right direction, is the second notch component. The width is formed to be longer than the second width (NK2b) which is the width in the direction between the distal end proximal end in the region along the fourth side portion of the second notch constituent portion, and the second width is the insertion piece portion. Has a width equal to or greater than the thickness of the insertion piece portion, and the insertion piece portion includes an engagement protrusion (102) that is a protrusion protruding toward the first side, and a lid portion side of the insertion piece portion. A tip-side corner (104) projecting on the tip side opposite to the tip, and formed between the engaging projection and the tip-side corner, the tip side closer to the second side of the insertion piece A first side forming side portion (100d) that is a side portion formed so as to be inclined, and a second side formed on the second side from the tip side corner portion. An engagement notch (K3) is formed between the engagement projection and the side on the distal end side of the lid. The end on the 1 side is on the first side of the first notch component in the left-right direction, and the first corner is on the first notch in the left-right direction. In the range from the first side end of the second side part to the second side end of the part, when the lid part is in the closed state, the tip side corner part is in the first notch component. When the insertion piece part is slid to the front side with the second side forming side part in contact with the third side part, the second side forming side part enters the second notch constituting part. In addition, the first side forming side portion is in contact with the first side portion, and the insertion piece portion is further lowered, and the first side forming side portion is lowered while being in contact with the first side portion. When the insertion piece part is lowered while sliding to the second side together with the distal end side of the lid part, and the engaging protrusion passes through the first side part, the state before the distal end side of the lid part slides to the second side The engagement region (70R), which is a region adjacent to the first side of the first side portion of the front flap, is inserted into the engagement notch, and the engagement protrusion and the engagement region When the packaging box is locked in the closed state and unlocked from the state in which the packaging box is locked in the closed state, the front end side of the lid portion is slid to the second side. The insertion piece is moved to the second side, and the engagement between the engagement protrusion and the engagement area is released.

  According to the packaging box of the second configuration, it is possible to unlock the packaging box only by sliding the lid part in the lateral direction. The lid can be easily opened with a small force.

  Further, when the lid portion is closed, the engaging protruding portion is utilized by utilizing the force that the distorted packaging box is restored by sliding the insertion piece portion and the side portion on the distal end side of the lid portion laterally. Since the engagement region is engaged, the lock is naturally performed only by lowering the insertion flap, and thus the closed state of the lid can be reliably maintained. Moreover, since the 1st notch structure part is formed wide, the front end side corner | angular part can be easily inserted in a 1st notch structure part.

  Third, in the second configuration, the front flap side end of the front portion protrudes above the first fold line and the second fold line between the first fold line and the second fold line. Front-side protrusions (14a, 14b, 14c) are formed, and the front-end-side protrusions extend from the first side end to the second side end in the left-right direction. It is in the range.

  Therefore, when the insertion piece part is slid to the front side with the second side forming side part in contact with the third side part, the front end side corner part contacts the front part protruding part, and the front side Since the slide to the part side is blocked, the insertion piece part can surely enter the second notch constituent part.

  Fourthly, in the third configuration, the front projection is provided on the first side and opposed to the second side, and the first front projection (14a). And a first front projection, and a second front projection (14b) provided in the left-right direction with a gap in between, and facing the fourth side. A second notch (K1) is formed between the shape portion and the second front surface protrusion, and the first side end of the second notch is the second side portion in the left-right direction. Provided at a position opposite to an intermediate position from the end portion on the first side to the end portion on the second side, and the second side end portion of the second notch portion is arranged in the fourth side portion in the left-right direction. Provided at a position opposite to an intermediate position from the end portion on the first side to the end portion on the second side, and the tip-side protruding portion is located on the first side of the first front-side protruding portion in the left-right direction. 2nd from the end When the packaging box is in the closed state and locked in the closed state, at least a part of the rear face side of the first front part projecting part and a rear part of at least a part of the second front part projecting part The insertion piece is located on the side.

  In the fourth configuration, since the second cutout portion is provided, when the second side forming side portion enters the second cutout configuration portion, the second cutout configuration portion is caught by the upper side of the front portion. It does not become difficult to enter.

  Fifthly, in the fourth configuration, the base side corner (106) formed on the second side of the second side forming side part on the base side from the tip side corner is provided. The base end side corner portion is formed in a range from the first side end portion of the second notch constituent portion to the second side end portion of the second notch portion in the left-right direction. To do.

  In the fifth configuration, when the base side corner reaches the position of the notch (K2), the second notch of the second notch from the end on the first side of the fourth side in the left-right direction. Since it is in the range up to the end part on the 2 side, when the base end side corner part enters the second notch constituent part, it does not become difficult to enter the second notch constituent part by being caught by the upper side of the front part. .

  Sixthly, in any one of the second to fifth configurations, the second side forming side portion (100f) becomes closer to the proximal end side as it goes to the second side of the insertion piece portion. It is characterized by being inclined. Therefore, the second side forming side can be easily brought into contact with the third side and can be easily slid along the third side to the front side.

  Seventhly, in any one of the second to sixth configurations, the third side portion is inclined with respect to the left-right direction so that the third side portion is closer to the base end side of the front flap toward the second side. It is characterized by that. Therefore, when the second side forming side portion slides along the third side portion, it is possible to prevent the second side forming side portion from being caught by the corners of the third side portion and the fourth side portion, and to be inserted. It is easy to guide one part to the second notch constituent part.

  Eighthly, in any one of the first to seventh configurations, in a natural state in which the engagement between the engagement protrusion and the engagement region is released, the lid portion is The front side is inclined so that the side on the front side faces diagonally upward, and the front flap is inclined so that the side on the front side faces diagonally upward on the back side.

  Therefore, when the engagement protrusion and the engagement area are disengaged, the insertion piece part rises with respect to the opening part. Then, the lid part can be rotated to the open state. It is easy to open the part.

  Ninth, in any one of the first to eighth configurations, the lid portion is opened in a region on the distal end side of the lid portion where the insertion piece portion is continuously provided in the left-right direction. A finger locking part (110) for locking the finger when the touch is made is provided.

  Tenthly, a box body (3) having a front part (10), a right side part (20), a left side part (30), a back part (40) and a bottom part (60), A lid part (90) provided continuously from the upper side via a broken line, an insertion piece part (100) provided continuously from a side part on the distal end side of the lid part via a broken line, and a broken line from the upper side of the front part And a front flap (70) continuously provided in a package, wherein the packaging box is formed by a sheet-like blank (may be "formed by one sheet-like blank"), and the front of the front flap An opening (K) comprising a first notch (K2) formed along the side on the side of the part and a second notch (K1) formed along the side on the front flap side of the front part. However, in the left-right direction, the line in the left-right direction is a broken line between the front part and the front flap. Formed between a first broken line (C10a) that is a first-side broken line and a second broken line (C10b) that is a second-side folded line on the other side in the left-right direction, and the first notch is A first notch component (K2a) provided on the first side, and a second notch component (K2b) connected from the first notch component to the second side, The first notch component part is formed in the left-right direction with a first side part (70a) that forms an end on the first side of the first notch component part and is formed in a direction substantially perpendicular to the left-right direction. The second side portion (70b) is connected to the second side end portion of the second side portion, and is inclined with respect to the left-right direction so that the base side of the front flap becomes closer to the second side. The third side (70c) is formed, and the second notch component is connected to the second side end of the third side and formed in the left-right direction. A fourth side portion (70d) formed and a fifth side portion (70e) forming an end portion on the second side of the second notch configuration portion, and the width of the first notch configuration portion, A first width (NK2a) that is a width in the direction between the distal end and the proximal end that is perpendicular to the left-right direction in the direction between the distal end and the proximal end of the front flap in the region along the second side of the first notch constituent portion. Is formed to be longer than the second width (NK2b), which is the width in the direction between the distal proximal ends in the region along the fourth side of the second notch component, with the width of the second notch component. The second width has a width equal to or greater than the thickness of the insertion piece so that the insertion piece can be inserted, and the front flap side end portion of the front portion is a protruding portion protruding upward from the first folding line. A first front protrusion (14a) is provided on the first side of the second notch, adjacent to the second notch, opposite the second side, A second front portion protruding portion (14b), which is a protruding portion protruding above the line, is opposite to the fourth side portion adjacent to the second cutout portion on the second side of the second cutout portion. The first side end portion of the second cutout portion is opposed to a midway position from the first side end portion to the second side end portion of the second side portion in the left-right direction. And the second side end of the second notch is opposed to a midway position from the first side end to the second side end of the fourth side in the left-right direction. The insertion piece is protruded from the engagement protrusion (102), which is a protrusion protruding to the first side, and the distal end side of the insertion piece opposite to the lid side. A first corner (104), a second corner (106) formed on the second side of the first corner, and on the proximal side of the first corner, and an engaging protrusion And between the first corner Between the first corner and the second corner, and the first inclined side (100d), which is a side that is inclined so as to be closer to the tip side toward the second side of the insertion piece. And a second inclined side portion (100f) that is a side portion that is inclined so as to be closer to the proximal side toward the second side of the insertion piece portion, and has a protruding portion for engagement. A third cutout portion (K3) is formed between the front end side of the lid portion and the first cutout constituting portion in the left-right direction. The first corner portion is a second side from the first side end portion of the second side portion of the first notch component in the left-right direction. In the range from the first side end of the first front projection to the second side end, and the second corner in the left-right direction. Second notch component In the range from the end on the first side to the end on the second side of the second notch in the region on the tip side of the lid, the region where the insertion piece portion is continuously provided in the left-right direction is The finger locking portion (110) for locking the finger when the lid portion is in the open state is provided, and is an area adjacent to the first side of the first side portion of the engaging protrusion and the front flap. In the natural state where the engagement with the engagement region (70R) is released, the lid portion is inclined so that the side portion on the front end side faces obliquely upward on the front side, and the front flap is on the side on the front end side. When the lid portion is inclined so as to face obliquely upward on the back side and the lid portion is closed, the first corner portion enters the first notch component portion and the second inclined side portion becomes the third side portion. When the insertion piece part is lowered in the contact state, the second inclined side part is inclined so that the side part on the tip side faces obliquely upward on the back side. While abutting against the third side portion of the front flap, it slides to the front side and enters the second notch constituting portion, the first inclined side portion contacts the first side portion, and the insertion piece portion is further lowered. Then, the first inclined side portion descends while contacting the first side portion, so that the insertion piece portion descends while sliding to the second side together with the distal end side of the lid portion, and the second side of the insertion piece portion The region enters the gap between the second projecting portion and the fourth side portion, and when the engaging projecting portion passes the first side portion, the state before the front end side of the lid portion slides to the second side The engagement region (70R) in the front flap is inserted into the third cutout portion by engaging the engagement protrusion with the engagement region, and the packaging box is locked in the closed state. In a state where the packaging box is locked in the closed state, at least a part of the rear surface side of the first front surface protrusion and the second front surface When the insertion piece is located on the back side of at least a part of the projecting part and the packaging box is closed and locked, when the lid is opened, the finger is locked on the finger locking part. Then, by sliding the front end side of the lid portion to the second side, the insertion piece portion moves to the second side, and the engagement of the engaging protrusion and the engagement area is released, and the lid portion The side of the front end side of the lid part is turned upward by trying to return to the natural state.

  In the tenth configuration, it is possible to unlock the packaging box only by sliding the lid portion laterally, and when the lock is released, the lid portion tries to return to the natural state, thereby leading the tip of the lid portion. Since the side part on the side rotates upward, the lid can be easily opened with a small force.

  Further, when the lid portion is closed, the engaging protruding portion is utilized by utilizing the force that the distorted packaging box is restored by sliding the insertion piece portion and the side portion on the distal end side of the lid portion laterally. Since the engagement region is engaged, the lock is naturally performed only by lowering the insertion flap, and thus the closed state of the lid can be reliably maintained. Moreover, since the 1st notch structure part is formed wide, the front end side corner | angular part can be easily inserted in a 1st notch structure part.

  In addition, since the first projecting portion is provided, when the insertion piece portion is slid to the front side while the second inclined side portion is in contact with the third side portion, the first corner portion is the first corner portion. Since the slide to the front portion side is blocked by coming into contact with the one protruding portion, the insertion piece portion can be surely entered into the second notch constituting portion.

  In addition, since the second cutout portion is provided, when the second inclined side portion or the second corner portion enters the second cutout configuration portion, the second cutout portion is caught by the upper side of the front portion and enters the second cutout configuration portion. It will not be difficult.

  Further, since the second corner portion is in a range from the first side end portion of the second notch configuration portion to the second side end portion of the second notch portion in the left-right direction, the second corner portion Is in the range from the first side end of the fourth side to the second side end of the second notch in the left-right direction when reaching the position of the notch (K2), When the second corner portion enters the second notch configuration portion, it does not become difficult to enter the second notch configuration portion by being caught by the upper side of the front portion.

  In addition, since the second inclined side portion is formed to be inclined so as to be closer to the proximal end side toward the second side of the insertion piece portion, the second inclined side portion easily contacts the third side portion, and the third side portion It can be easily slid along the front side.

  In addition, since the third side portion is inclined with respect to the left-right direction so that the third side portion is closer to the second side, the second inclined side portion slides along the third side portion. In doing so, the second inclined side portion can be prevented from being caught at the corner portions of the third side portion and the fourth side portion, and the insertion piece portion can be easily guided to the second notch constituent portion.

  Eleventhly, in any of the ninth to tenth configurations, the finger locking portion is an opening formed in the lid portion or an opening portion formed from the lid portion to the insertion piece portion. It is characterized by that.

  The following configuration may also be used. That is, in the twelfth configuration, in any one of the first to eleventh configurations, the insertion piece portion is provided at the approximate center in the left-right direction of the lid portion, and the finger locking portion is approximately at the center in the left-right direction It is provided. By providing these in the vicinity of the center, the engagement of the lid portion is balanced in the left-right direction, and only one of the left and right sides of the lid portion is not easily turned up.

  According to the packaging box based on this invention, the cover part (90) is reliably attached to a front flap (70) by providing an insertion piece part (100f) in an opening part (K) so that a slide fitting is possible stably. The lid (90) can be easily opened and closed even with a small force by allowing the insertion piece (100) to slide with respect to the opening (K) and enabling the fitting / unmating. It can be carried out.

It is a perspective view which shows the state which opened the cover part of the packaging box. It is a principal part enlarged view of FIG. It is the principal flap of the front flap and front part in a packaging box. It is an expanded view of the packaging box based on an Example. It is a principal part enlarged view of FIG. It is explanatory drawing for demonstrating the positional relationship of the left-right direction in a packaging box. It is a front view from diagonally upward which shows the open state of a packaging box. It is a front view from diagonally upward which shows the state at the time of inserting the insertion piece part of a packaging box. It is a front view from diagonally upward which shows the state locked by the closed state of the packaging box. It is a perspective view which shows the use condition at the time of opening a packaging box. It is a front view from diagonally upward which shows the state at the time of opening a packaging box. It is a perspective view which shows the open state of a packaging box. It is explanatory drawing for demonstrating the positional relationship of the left-right direction in the other example of a packaging box. It is explanatory drawing for demonstrating the positional relationship of the left-right direction in the other example of a packaging box. It is an expanded view of the packaging box based on a prior art example. It is a perspective view which shows the closed state of the packaging box based on a prior art example.

  In the present invention, in the packaging box which closes the packaging box by inserting the insertion piece portion rotatably connected to the tip of the lid portion into the opening portion of the front portion, the lid portion is securely closed by a simple operation. The object of providing a packaging box that can be fixed and opened with a simple operation is realized as follows.

  The packaging box A based on this invention is comprised as shown in FIGS. 1-6, the sleeve-shaped part 5, the bottom face part 60, the front flap 70, the horizontal flaps 82 and 84, the cover part 90, and insertion. The packaging box A is a single sheet-like blank (specifically, a blank made of cardboard (for example, made of thin cardboard) and other blanks made of cardboard, etc. It may be formed by assembling a paper blank). That is, the packaging box A is a paper box such as a cardboard material (particularly, a double-sided cardboard material). The direction of the center step of the substantially corrugated cross-sectional shape of the cardboard is the direction (Y1-Y2 direction) shown in the circle in FIG. In the drawings, the Y1-Y2 direction indicates a direction perpendicular to the X1-X2 direction.

  As shown in FIGS. 1 and 4, the sleeve-shaped portion 5 constitutes a peripheral wall (or a side surface) of the packaging box A, and includes a rectangular plate-shaped right side surface portion 20 and a front side edge of the right side surface portion 20. A front part 10 provided continuously from the part via a polygonal line, and a rectangular plate-like left side part 30 provided continuously from a side part on the left side (first side) of the front part 10 via a polygonal line; The square-shaped plate-like back surface portion 40 is continuously provided from the side portion on the back surface side of the left side surface portion 30 via the broken line, and the right side surface side (second side) side portion of the back surface portion 40 via the broken line line. It has the paste margin part 50 provided continuously.

  The front part 10 has a substantially square shape, the side part on the right side and the side part on the left side of the front part 10 are parallel to each other, and the lower side of the front part 10 and the broken line C10 between the front flaps 70 are parallel to each other. Is formed. The broken line C10 includes a left-side broken line (first broken line) C10a and a right-side folded line (second broken line) C10b. The broken line C10a and the broken line C10b are formed on the same straight line. The front portion 10 is provided with protrusions (front protrusions) 14a and 14b and a notch K1 in the upper end region, which will be described in detail later.

  Further, as shown in FIG. 4, the left side surface portion 30 is formed in substantially the same shape as the right side surface portion 20. Further, the back surface portion 40 is formed in substantially the same shape as the front surface portion 10. Moreover, the margin part 50 is formed in the strip | belt-shaped trapezoid shape. The margin portion 50 is bonded to the inner surface of the right side surface portion 20. The sleeve-like portion 5 is formed in a cylindrical shape by bonding the adhesive margin portion 50 to the right side surface portion 20.

  The bottom surface portion 60 has a piece portion 62, a piece portion 64, a piece portion 66, and a piece portion 68.

  The piece 62 is connected to the lower end of the right side surface part 20 via a broken line, and is approximately at the tip of a trapezoidal shape (a trapezoidal shape in which one of the sides on both sides is perpendicular to the lower side of the right side surface 20). It presents a shape in which square shapes are arranged continuously. Moreover, the piece part 64 is continuously provided through the broken line from the lower end of the front part 10, and is exhibiting the shape which formed the substantially square-shaped notch part in the square-shaped front end side. Moreover, the piece part 66 is connected from the lower end of the left side surface part 30 via a broken line, and has a symmetrical (line symmetric) shape with respect to the piece part 62. The piece 68 is connected to the lower end of the back surface portion 40 via a broken line, and a substantially square shape is connected to the tip of a trapezoidal shape (a trapezoidal shape in which both sides are inclined with respect to the lower side of the back surface portion 40). It has the shape that was set. Such a bottom surface portion 60 is called a B-type bottom assembly type, and is also called an American rock or a hell bottom.

  Moreover, the front flap 70 is continuously provided from the upper end of the front part 10, as shown in FIG.2 and FIG.3. The front flap 70 is continuously provided from the upper end of the front portion 10 via a broken line, and has a trapezoidal shape (a trapezoidal shape in which the side on the back side of the both sides is perpendicular to the lower side of the right side portion 20). Yes. The front flap 70 is provided with a horizontally long cutout K2 in an end region on the front side, which will be described later in detail. An opening K is formed in a continuous portion between the front portion 10 and the front flap 70, and the opening K is composed of a cutout portion K1 and a cutout portion K2.

  The front flap 70 is a blank (for example, paper) in a natural state (in a state where no force is applied from the outside, specifically, in a state where the engagement between the protrusion 102 and the engagement region 70R is released). Due to the force to be restored, it is inclined obliquely upward (backward obliquely upward) with respect to the front portion 10 (see FIGS. 1, 2, 7, and 12). FIG. 3 is a plan view of the main parts of the front flap 70 and the front portion 10 in a state where the front flap 70 is perpendicular to the front portion 10.

  The lateral flap 82 is connected continuously from the upper end of the left side surface part 30 via a polygonal line, and exhibits a trapezoidal shape (a trapezoidal shape in which the side on the back side of the both sides is perpendicular to the lower side of the left side part 30). Yes. The length from the upper end of the left side surface portion 30 of the lateral flap 82 to the opposite side portion is formed to be ½ or less of the vertical length of the front portion 10 and the rear portion 40.

  The lateral flap 84 is continuously provided from the upper end of the right side surface part 20 via a broken line, and exhibits a trapezoidal shape (a trapezoidal shape in which the side on the back side of the both sides is perpendicular to the lower side of the right side part 20). Yes. The length from the upper end of the right side surface portion 20 of the lateral flap 84 to the opposite side portion is formed to be ½ or less of the vertical length of the front surface portion 10 and the rear surface portion 40.

  The lateral flap 82, the lateral flap 84, and the front flap 70 constitute an upper surface portion 80.

  Moreover, the cover part 90 is continuously provided via the broken line from the edge part of the upper end of the back part 40. FIG. The lid portion 90 has a substantially square plate shape, the length in the left-right direction is substantially the same as the length in the left-right direction of the back surface portion 40, and extends from the upper end side portion of the back surface portion 40 to the opposite side portion. The length is substantially the same as the lateral length of the right side surface 20 and the left side surface 30.

  The lid 90 is in a blank state (for example, paper) in a natural state (in a state where no force is applied from the outside, specifically, in a state in which the engagement between the protrusion 102 and the engagement region 70R is released). As shown in FIGS. 7 and 12, the tip of the insertion piece 100 and the upper end of the front portion 10 are inclined with respect to the horizontal direction (the direction of the upper side of the sleeve-like portion 5). A space is formed between the upper end of the projecting portions 14a and 14b, and between the inner surface of the lid portion 90 and the front end of the front flap 70 facing obliquely upward on the back side in a natural state. Also, a space is formed.

  Moreover, the insertion piece part 100 is continuously provided from the side part 90a of the front end side of the cover part 90 via the broken line C100. In addition, an opening (finger locking portion) 110 is formed in the region on the distal end side of the lid 90 and the region on the lid 90 side of the insertion piece 100. That is, the broken line C100 coincides with a part of the side portion 90a. Details of the insertion piece 100 and the opening 110 will be described later.

  Next, the protruding portions 14a and 14b and the cutout portion K1 in the front portion 10 will be described in detail. In front part 10, between projection lines C10a and C10b with front flap 70, two projection parts 14a and 14b, projection part (first front part projection part) 14a, and projection part (second front part) A notch K1 formed in a horizontally long shape is provided between the protruding portions 14b.

  That is, from the end position on the right side surface of the broken line C10a, a straight side part 10a that is formed short in the vertical direction (perpendicular to the broken line C10a) and the upper end of the side part 10a are connected in a horizontal direction ( A straight side 10b formed in a direction parallel to the direction of the polygonal line C10), a side 10c that forms a notch K1, and is connected to the right side end of the side 10b, and a side 10c. Are connected from the end on the right side of the linear side 10d formed in the left-right direction (a direction parallel to the direction of the polygonal line C10) and the end on the right side of the side 10d. A linear side portion 10e formed in the vertical direction (perpendicular to the polygonal line C10b) is formed, and an end portion on the right side surface of the side portion 10e is formed at an end portion position on the left side surface side of the polygonal line C10b. Yes.

  Here, the side portion 10a includes a portion formed by a cut J1 formed downward from an end portion on the right side of the broken line C10a, and a portion formed above an extension line of a portion formed by the cut J1. And is short in the vertical direction as a whole.

  The side portion 10b is formed to be shorter in the left-right direction than the side portion 70b constituting the cutout portion K2a, and is formed to have a length of about 2/3 of the length in the left-right direction of the side portion 70b.

  The side portion 10c is continuously provided from a linear side portion (inclined side) 12a continuously provided from an end portion on the right side surface of the side portion 10b and an end portion (lower end) on the right side surface side of the side portion 12a. A substantially arc-shaped side portion 12b, and a linear side portion 12c that is provided in a right-and-left direction (a direction parallel to the direction of the broken line C10) continuously from an end portion (lower end) on the right side surface of the side portion 12b. The substantially circular arc-shaped side portion 12d continuously provided from the end portion on the right side surface of the side portion 12c and the linear side portion (inclined) continuously provided from the end portion (upper end) on the right side surface side of the side portion 12d. Side) 12e.

  Here, the side portion 12a is inclined with respect to the direction of the broken line C10 so as to become lower as it goes to the right side surface, and the side portion 12e is bent line so as to become higher as it goes to the right side surface side. It is inclined with respect to the direction of C10. The angle (acute angle) with respect to the direction of the broken line C10 of the side portion 12a is formed slightly smaller than the angle (acute angle) with respect to the direction of the broken line C10 of the side portion 12e. The length of the side portion 12c in the left-right direction is slightly smaller than the width in the left-right direction of the side portion 100f of the insertion piece 100 (described later).

  The side part 12b forms a round between the side part 12a and the side part 12c, and the side part 12d forms a round between the side part 12c and the side part 12e.

  The length in the left-right direction of the side portion 12c is formed to be approximately 3/5 of the length M100f in the left-right direction of the side portion 100f of the insertion piece portion 100.

  The side portion 10d is formed to be shorter in the left-right direction than the side portion 70d constituting the cutout portion K2b, and is formed to have a length of about 1/3 of the length of the side portion 70d in the left-right direction. Further, the side portion 10d is formed longer in the left-right direction than the side portion 10b.

  The side portion 10e has a portion formed by a cut J2 formed downward from the left side end of the broken line C10b, and a portion formed above an extension line of the portion formed by the cut J2. The whole is short in the vertical direction. The side 10e is formed symmetrically with the side 10a.

  As described above, the side portions 10a to 10e are formed between the broken line C10a and the broken line C10b, the protruding portions 14a are formed by the side portions 10a and 10b, and the protruding portions 14b are formed by the side portions 10e and 10d. A horizontally elongated substantially trapezoidal cutout K1 is formed between the protruding portion 14a and the protruding portion 14b.

Note that the length in the left-right direction of the notch K1 (the length between the end on the left side of the side portion 10c and the end on the right side) is
Next, the notch K2 of the front flap 70 will be described in detail. In the front flap 70, a notch K2 is formed between the polygonal lines C10a and C10b with the front portion 10.

  The cutout portion K2 includes a leftward cutout portion (first cutout configuration portion) K2a and a cutout portion (second cutout configuration portion) K2b that is connected to the cutout portion K2a and formed to the right of the cutout portion K2 in a front view. It is composed of The notch K2a is formed such that the length MK2a in the left-right direction is substantially ¼ of the length MK2 in the left-right direction of the entire notch K2. Further, the notch K2b is formed such that the length MK2b in the left-right direction is substantially 3/4 of the length MK2 in the left-right direction of the entire notch K2. That is, the length MK2a in the left-right direction of the notch K2a is shorter than the length MK2b in the left-right direction of the notch K2b. The length of the notch K2b in the front-rear direction of the front flap 70 (the direction between the front end and the base end of the front flap 70 and the direction perpendicular to the broken line C10) is the notch K2a in the front-rear direction of the front flap 70. It is formed to be about 1/3 of the length. And the length MK2 in the left-right direction of the notch K2 is formed slightly longer than the length M100 in the left-right direction of the insertion piece 100 described later (that is, the maximum length (that is, the length between the side 100i and the side 100c)). Thereby, the insertion piece 100 can be inserted into the notch K2.

  That is, from the end position on the right side surface of the polygonal line C10a, a linear side part (first end side part, first side part) 70a formed in the front-rear direction and the back side (front side) of the side part 70a. A straight side (left and right side, second side) 70b, which is formed from the end of the flap 70) to the right side in parallel with the direction of the polygonal line C10; A straight side part (third side part) 70c that is provided on the right side surface side of the part 70b and formed obliquely on the front side (the front side is the base side of the front flap 70); A straight side part (left and right side part, fourth side part) 70d that is connected to the right side surface end of the part 70c and is formed parallel to the direction of the polygonal line C10, and the right side of the side part 70d Sides (second end side part, fifth side part) 70 formed in a direction perpendicular to the direction of the polygonal line C10 from the end part to the front side. : It is formed, the side portion 70a is the end of the right side and continuously provided polyline C10a, sides 70e is a side section and continuously provided on the left side of the broken line C10b.

  Here, the length of the side portion 70a is formed longer than the side portion 70e (specifically, the length of the side portion 70a is formed approximately four times the thickness of the insertion piece portion 100), The length (first width) NK2a in the front-rear direction of the notch K2a is formed longer than the length (second width) NK2b in the front-rear direction of the notch K2b (specifically, the length NK2a). Is formed approximately three times the length NK2b). Therefore, the corner 104 of the insertion piece 100 can be easily inserted into the notch K2a. Further, the length NK2b is formed longer than the thickness of the insertion piece 100. The length NK2a and the length NK2b are widths in the direction between the distal end and the proximal end that are perpendicular to the left and right direction in the direction between the distal end and the proximal end of the front flap 70.

  In the notch K2a, the length MK2a is formed approximately 3.5 times the length NK2a, and in the notch K2b, the length MK2b is formed approximately 36 times the length NK2b.

  In a state where the front flap 70 is bent at a right angle to the back side with respect to the front portion 10, as shown in FIG. 3, the cutout portion K2 is formed in a straight shape on the front side in a plan view, The part K2a is formed wider than the notch part K2b.

  Further, an end portion on the left side of the side portion 70c (end portion on the side portion 70b side) 70cL is on the right side of an end portion on the left side surface side of the side portion 10c (end portion on the left side surface side of the side portion 12a) 10cL. The end portion 70cL on the left side surface side of the side portion 70c is formed at the same position (may be substantially the same position) as the left side surface end portion 12cL of the side portion 12c in the left-right direction. . As a result, the region of the notch K2a and the region of the notch K1 overlap in the left-right direction, which makes it easy to insert the corner 104 of the insertion piece 100 into the notch K2a. The side part 70c is inclined with respect to the left-right direction so as to be closer to the base end side of the front flap toward the second side.

  Further, in the unfolded state of the packaging box A, the side portion 10b of the front portion 10 and the side portion 70b of the front flap 70 are formed to face each other in parallel with an interval, and the side portion 12a and the front flap 70 in the front portion 10 are formed. The side portions 70c of the front face 10 are formed to face each other with a gap therebetween in a substantially parallel manner, and the side portions 12c of the front face portion 10 and the side portions 70d of the front flap 70 are formed to face each other in a substantially parallel manner with a gap therebetween. The side part 10b in the front part 10 and the side part 70d in the front flap 70 are adjacent to each other via a linear cut J3.

  Next, the insertion piece 100 and the opening 110 will be described in detail. The insertion piece 100 is formed in a substantially trapezoidal shape with a side 100 f at the tip thereof slightly inclined with respect to the side of the upper end of the lid 90.

  The insertion piece portion 100 is provided in a substantially central region in the left-right direction of the side portion 90 a on the distal end side of the lid portion 90 (at least the center position in the left-right direction of the side portion 90 a of the lid portion 90 is the position of the insertion piece portion 100. It is in the range from the end on the left side in the left-right direction to the end on the right side).

  Moreover, the insertion piece part 100 is connected from the edge part on the opposite side to the side part 90a of the side part 100a, and the linear side part 100a formed at right angles with respect to the side part 90a, and the left side surface side ( In FIG. 4, the right side) is a straight side part 100b formed in a direction inclined with respect to the direction of the side part 90a, and a substantially circle continuously provided from the end of the side part 100b opposite to the side part 100a. The arc-shaped side portion 100c and the end portion of the side portion 100c opposite to the side portion 100b are connected to each other, and are formed in a direction inclined with respect to the direction of the side portion 90a on the right side surface (left side in FIG. 4). A straight side portion (inclined side portion, first side forming side portion) 100d, and a substantially arc-shaped side portion 100e provided continuously from an end of the side portion 100d opposite to the side portion 100c; The side portion 100e is continuously provided from the end opposite to the side portion 100d, and on the right side surface (left side in FIG. 4). The linear side part (second side forming side part) 100f formed in a direction inclined with respect to the direction of the part 90a and the end part on the opposite side of the side part 100e of the side part 100f are provided continuously. The substantially arc-shaped side part 100g and the end part of the side part 100g opposite to the side part 100f are connected in a direction inclined with respect to the direction of the side part 90a on the right side surface (left side in FIG. 4). The linear side portion 100h is formed, and the linear side portion 100i that is connected to the end portion of the side portion 100h opposite to the side portion 100g and is formed at right angles to the side portion 90a. doing.

  The side part 100b is inclined with respect to the side part 90a so that the distance from the side part 90a increases as it goes from the side part 100a side to the side part 100c side (that is, as it goes to the left side surface side). Further, the side portion 100d is inclined with respect to the side portion 90a so that the distance from the side portion 90a becomes longer as it goes from the side portion 100c side to the side portion 100e side (that is, as it goes to the right side surface side). Yes. Also, the side portion 100f is inclined with respect to the side portion 90a so that the distance from the side portion 90a becomes shorter as it goes from the side portion 100e side to the side portion 100g side (that is, as it goes to the right side surface side). Yes. Further, the side portion 100h is inclined with respect to the side portion 90a so that the distance from the side portion 90a becomes shorter as it goes from the side portion 100g side to the side portion 100i side (that is, as it goes to the right side surface side). Yes.

  Further, the side portion 100c forms a radius at the corners of the side portion 100b and the side portion 100d (the side portion 100b forms a tangent at the end of the side portion 100c on the side portion 100b side, and the side portion 100d The side 100e forms a rounded corner at the side 100d and the side 100f (the side 100d is the side 100d of the side 100e). The side 100f forms a tangent at the side 100f side of the side 100e), and the side 100g forms a radius at the corners of the side 100f and the side 100h. (The side part 100f forms a tangent at the end part of the side part 100g on the side part 100f side, and the side part 100h forms a tangent line at the end part of the side part 100g on the side part 100h side).

  Here, the length N100a of the side portion 100a is determined so that the insertion piece portion 100 is bent at a right angle with respect to the lid portion 90 (in a state bent toward the inner side of the lid portion 90). A region on the left side surface of the side portion 70a of the front flap 70 is formed between the side surface 100b and the side portion 100b so as to be inserted.

  Further, a cutout (engagement cutout) K3 is formed by the side 100a, the side 100b, and the side 90a (particularly, the portion of the side 90a facing the side 100b). The cutout portion K3 is formed so that the opening side is wider than the back side, and the length M100b of the side portion 100b in the left-right direction (may be the length in the left-right direction of the cutout portion K3) is the insertion piece portion. It is formed to be approximately 1/6 of 100 in the left-right direction length M100.

  Further, the insertion piece portion 100 is provided with a protruding portion (engaging protruding portion) 102 protruding to the left side by the side portion 100b, the side portion 100c, and the side portion 100d. The projecting portion 102 is a portion on the left side surface of the insertion piece portion 100 with respect to the side portion 100a. The side part 100b and the side part 100d form an acute angle (specifically, approximately 50 to 60 degrees). The side portion 100d forms an angle of about 45 degrees with respect to the direction of the side portion 90a.

  Further, in the insertion piece portion 100, the position of the side portion 100e becomes a corner portion (tip side corner portion) 104, and the corner portion 104 can be said to be a corner portion between the side portion 100d and the side portion 100f. The corner 104 protrudes to the oblique left side of the insertion piece 100 on the tip side (the side opposite to the lid 90 side). The side part 100d and the side part 100e form an obtuse angle (specifically, 120 to 140 degrees (preferably 125 to 135 degrees)).

  Further, in the insertion piece portion 100, the position of the side portion 100g becomes the corner portion 106, and the corner portion 106 can be said to be a corner portion between the side portion 100f and the side portion 100h. The corner portion 106 protrudes toward the oblique right side surface on the distal end side of the insertion piece portion 100. The side part 100f and the side part 100h form an obtuse angle (specifically, 125 to 145 degrees (preferably 130 to 140 degrees)).

  The length M100f in the left-right direction of the side portion 100f is shorter than the length M10 in the left-right direction from the side portion 70a to the end portion 10cR on the right side surface side of the side portion 10c.

  Moreover, the angle with respect to the left-right direction of the side part 100h is 35 to 55 degrees (preferably 40 to 50 degrees).

  In addition, a short cut is formed in the cover 90 on the extension line of the side part 100a and the side part 100i, so that the insertion piece part 100 is sufficiently bent with respect to the cover part 90.

  Further, as the positional relationship in the left-right direction (that is, the left-right side position of the side portion on the left side surface of the lid portion 90 is matched with the left-right direction position of the side portion on the left side surface of the front portion 10). As shown in FIG. 6, the positional relationship in the left-right direction when the position in the left-right direction of the right side of the front side 10 is made to coincide with the position in the left-right direction of the side on the right side of the front portion 10 is as follows. become. In other words, the position of the side portion 100a coincides (may be substantially coincident) with the side portion 70a, and the protruding portion 102 is located on the left side with respect to the side portion 70a. Further, the corner 104 is located in the region of the notch K2a (the region in the left-right direction) (that is, when the insertion piece 100 is lowered toward the notch K2 by rotating the lid 90 in the closing direction). The corner portion 106 enters the cutout portion K2a), and the corner portion 106 is located in the right side region in the region of the cutout portion K1 (region in the left-right direction). Further, the position of the side part 70a is a midway position from the end part on the side part 100c side to the end part on the side part 100e side in the side part 100d (position on the right side of the intermediate position in the left-right direction in the side part 100d). It becomes.

  Moreover, the opening part 110 is formed in the area | region of the insertion piece part 100 (specifically, the area | region from the side part 100a to the side part 100i in the left-right direction) in the left-right direction. That is, the opening 110 is provided in a substantially central region in the left-right direction of the side portion 90a on the tip side of the lid 90 (at least the center position in the left-right direction of the side 90a of the lid 90 is It is in the range from the end on the left side in the left-right direction to the end on the right side).

  Further, the opening 110 is formed in a square shape (may be a substantially square shape) in the unfolded state of the packaging box A. That is, the opening 110 is formed by a notch 110a formed in the lid 90 and a notch 110b formed in the insertion piece 100. The notch 110a is a square notch (strictly speaking, The corners are formed at two corners on the back side of the notch 110a), the notch 110b is a horizontally-long rectangular notch, and the side on the left side of the notch 110b is the notch 110a. The side of the notch 110b on the right side is on the extension of the side of the right side of the notch 110a. The opening 110 is formed so that the notch 110a and the notch 110b face each other.

  Next, the use state of the present invention will be described. First, in order to store the items to be stored in the packaging box A, the lid 90 is opened outward, and the front flap 70 and the lateral flaps 82 and 84 are opened outward (or standing). As shown in FIG.

  Next, to close the packaging box A, the lid 90 is turned to the front portion 10 side with the front flap 70 and the lateral flaps 82 and 84 folded inward with respect to the sleeve-like portion 5. In a state where the insertion piece 100 is bent inward with respect to the lid 90, the tip of the insertion piece 100 is positioned above the cutout K2, and then the insertion piece 100 is introduced into the cutout K2.

  Then, since the corner 104 corresponds to the region of the notch K2a in the left-right direction, the corner 104 enters the notch K2a. Since the notch K2a is formed wide as described above, the corner 104 can be easily introduced into the notch K2a.

  Thereafter, when the lid 90 is pivoted downward to lower the insertion piece 100, the side portion 100f attempts to enter the notch K2 (see FIG. 8). Even when the side portion 100f of the side portion is in contact with the side portion 70c, the side portion 70c is formed to be inclined with respect to the left-right direction, and the side portion 70c is formed toward the narrow notch K2b. The part 100f is guided by the side part 70c and guided to the notch part K2b. In particular, the front flap 70 is actually inclined obliquely upward (backward obliquely upward) with respect to the front portion 10 due to the force of restoring a blank (for example, paper), and the side portion 100f is the side. At the stage where the portion 70c comes into contact, a gap is formed between the upper end of the front portion 10 and the tip of the lid portion 90, so the front flap 70 is inclined obliquely upward, and the side portion 70c is actually also It is also inclined obliquely in the front-rear direction (the right-left direction and the direction perpendicular to the up-down direction), and moves downward along the side part 70c (that is, toward the front part 10 side) with the side part 100f contacting the side part 70c. By sliding, it is easy to guide to the narrow notch K2b. Further, since the side portion 70c is inclined with respect to the left-right direction so as to be closer to the second side toward the second side, when the side portion 100f slides along the side portion 70c, The side part 100f can be prevented from being caught at the corners of the side part 70c and the side part 70d, and the insertion piece part 100 can be easily guided to the notch part K2. Further, even when the side portion 100f is slid to the front portion 10 side along the side portion 70c, the corner portion 104 comes into contact with the protruding portion 14a and the sliding toward the front portion 10 side is blocked, so that The side portion 100f enters the cutout portion K2. In addition, since the side part 100f is inclined with respect to the direction of the side part 90a, the side part 100f is likely to contact the side part 70c and easily slide along the side part 70c.

  As described above, the front surface of the insertion piece 100 is positioned on the inner surface of the front portion 10 (particularly, the inner surface of the protruding portion 14a), and the rear surface is the side portion 70d. (Specifically, the tip of the insertion piece 100 contacts the inner surface of the protrusion 14a and the front side of the side portion 70d). By further lowering 100, the corner portion 106 enters the cutout portion K2b. When the corner 106 reaches the position of the notch K2 in the height direction, the range from the left side end of the side 70d to the right side end of the notch K1 in the left-right direction. It is in.

  Here, since the notch K1 is formed in the front part 10, when the side part 100f and the corner part 106 enter the notch part K2b, the side part 100f and the corner part 106 are caught on the upper side of the front part 10. Therefore, it does not become difficult to enter the notch K2b.

  That is, if the notch K1 is not provided, the side 10c is not provided, and therefore the side 10d is formed up to the side 10b, and the side 10d (side 10b) is formed on the front side of the side 70d. Only the side portion 10d) extending to the opposite side is opposed, and there is only a narrow gap between the side portion 10d and the front side of the side portion 70d, and the tip of the insertion piece 100 is the side portion 10d (side portion 10b). It is caught in the side part 10d) extended up to and cannot be easily inserted between the side part 70d and the side part 10d. In particular, when the side portion 100f is about to enter the notch K2b, the insertion piece portion 100 is inclined downward on the front side (that is, not in a state of being parallel or nearly parallel to the front portion 10). In particular, when the side portion 100f moves to the front side while sliding the side portion 70c, the lower side of the insertion piece portion 100 is inclined to the front side, so that it is easily inserted into the cutout portion K2b. I can't.

  In the present embodiment, since the notch K1 is provided, the insertion piece 100 extends along the inner surface of the front part 10 when the side 100f reaches the height position of the side 12c in the notch K1. Since the insertion piece 100 is substantially parallel to the front portion 10, the side portion can be lowered even if the insertion piece 100 is lowered as it is. 100f and the corner | angular part 106 are not caught by the edge part (edge part 12a-12c) of the notch K1.

  Thereafter, after the corner portion 106 reaches the position of the side portion 70d, when the insertion piece 100 is further lowered, the side portion 100d comes into contact with the left side portion 70a of the notch K2a. Since the side part 100d is formed to be inclined so that the side part 100c side is upward with respect to the left-right direction, as the insertion piece part 100 is lowered, the side part 100d is lowered while coming into contact with the side part 70a. Thereby, the insertion piece 100 slides to the right side with respect to the front portion 10 and the front flap 70. Since the insertion piece 100 slides to the right side, the side 90a on the tip side of the lid 90 also slides to the right side, and the side 90b on the right side of the lid 90 is in relation to the upper side of the right side 20. The side portion 90c on the left side surface side of the lid portion 90 is inclined with respect to the upper side of the left side surface portion 30, and a part of the packaging box A is distorted.

  Then, in a state where the side portion 100d is in contact with the side portion 70a, the insertion piece portion 100 descends while sliding to the right side, and when the protruding portion 102 passes through the side portion 70a, the packaging box A is distorted. As shown in FIG. 9, the insertion piece portion 100 moves to the left side with respect to the side portion 70a together with the side portion 90a on the front end side of the lid portion 90 and returns to the front flap in the notch portion K3. The engagement region 70R, which is a region adjacent to the side portion 70a, is fitted to the left side surface side of the side portion 70a in 70, and thereby the protrusion 102 is engaged with the engagement region 70R (that is, The insertion piece 100 and the front flap 70 are engaged), and the packaging box A is in the closed state and locked. When the packaging box A is locked in the closed state, the side portion 70a and the side portion 100a are in contact with each other, and the side portion 90b on the right side surface of the lid portion 90 is parallel to the upper side of the right side surface portion 20. The side portion 90c on the left side surface side of the lid portion 90 returns to a state parallel to the upper side of the left side surface portion 30.

  The side portion 100b is inclined with respect to the direction of the side portion 90a, and the cutout portion K3 is formed so that the opening side is wider than the back side, so that the engagement is adjacent to the side portion 70a. The region 70R is likely to enter the notch K3.

  Moreover, since the length in the left-right direction of the notch K2 is longer than the length M100 in the left-right direction of the insertion piece 100, the insertion piece 100 enters the notch K2 while sliding to the right side. It will not be a problem.

  In the state where the packaging box A is closed and locked, the insertion piece 100 is located on the back side of the projection 14a and the back side of the projection 14b, and the insertion piece is provided on the back side of the entire region of the projection 14a. The part 100 exists, and the insertion piece part 100 exists on the back side of a part of the projecting part 14b. Thus, since the insertion piece part 100 exists in the back side of the protruding parts 14a and 14b, the state locked in the closed state of the packaging box A can be firmly maintained. In addition, the insertion piece part 100 should just be located in the at least one back side of the protruding part 14a, and the at least one back side of the protruding part 14b.

  Next, in order to open the lid 90 from the state in which the packaging box A is locked in the closed state, as shown in FIG. 10, a finger is hooked on the opening 110 and the lid 90 is moved to the opening K. Slide to the right side. Then, when the end portion on the left side surface of the projecting portion 102 reaches the position of the side portion 70a (see FIG. 11), the engagement between the projecting portion 102 and the engagement region 70R is released (that is, the lock is released). Then, since the lid 90 tries to return to the state inclined with respect to the horizontal direction, the insertion piece 100 rises with respect to the opening K, and as shown in FIG. As shown in FIG. 8, the corner portion 104 is lifted up to a state where it is completely separated from the opening K or is in contact with the protruding portion 14a. When the insertion piece 100 is completely detached from the opening K, the lid 90 can be rotated as it is to open, and when the corner 104 is in contact with the protruding portion 14a. Can be removed from the opening K by rotating the lid 90 upward, and thereafter, the lid 90 may be rotated to be in the open state.

  Further, since the front flap 70 is rotated so as to return so that the tip thereof is obliquely upward on the back side, when the engagement between the protrusion 102 and the engagement region 70R is released, the front flap 70 is moved to the lid portion. The lid 90 can be rotated by pushing up 90 from below.

  In addition, when the return force of the cover 90 and the front flap 70 is weak and the cover 90 does not rise only by releasing the engagement between the protrusion 102 and the engagement region 70R, the engagement is released. What is necessary is just to rotate the cover part 90 upwards.

  When the lid 90 is slid by hooking a finger on the opening 110, the other hand preferably supports a portion other than the lid 90 and the insertion piece 100 in the packaging box A. At that time, when either one of the left and right corners in the area of the front flap 10 side of the front flap 70 is pressed with the other finger, the front flap 70 is obliquely upward on the back side when the front flap 70 is pressed. However, when the hand (the other hand) holding down the front flap 70 is separated from the front flap 70, the front flap 70 is rotated and the lid 90 can be pushed up from below.

  Further, since the side portions 100c, 100e, and 100g constitute a round shape, when the insertion piece 100 is inserted into the opening K or when the insertion piece 100 is detached from the opening K, the sides 100c, 100e, Compared with the case where 100 g is not formed, it is possible to make it difficult to get caught in any part of the opening K, and the insertion piece 100 can be smoothly inserted into and removed from the opening K.

  As described above, according to the packaging box A of the present embodiment, the packaging box A can be unlocked only by sliding the lid portion 90 in the lateral direction. The lid can be easily opened with a small force.

  Further, when the lid 90 is closed, by using the force that the distorted packaging box A is restored by sliding the insertion piece 100 and the side 90a on the distal end side of the lid 90 in the lateral direction, Since the protrusion 102 and the engagement region 70R are engaged, the lock is naturally performed only by lowering the insertion piece 100, so that the closed state of the lid can be reliably maintained.

  In the above description, the opening K has been described as being configured by the notch K1 and the notch K2. However, the configuration of the notch K1 is omitted, and the opening K is configured only by the notch K2. May be. In that case, a protrusion having the same height as the protrusion 14a and the protrusion 14b is formed in the region between the protrusion 14a and the protrusion 14b. As shown in FIG. Between the part 10a and the side part 10e, it is comprised by the extended line of the side part 10a or the side part 10e, and one protrusion part (front part protrusion part) 14c is formed, and the upper side of the protrusion part 14c is one side. It is comprised by the part 10f. When the notch K1 is not formed in this way, there are the above-mentioned problems, but the engagement and release of the protrusion 102 and the engagement region 70R can be performed as described above.

  Further, when the configuration of the cutout portion K1 is omitted, the side portion along the opening K on the upper side of the front portion 10 is not provided with the protruding portions protruding upward from the broken lines C10a and C10b. It may be an extension line. In this case, the upper side of the front portion 10 is formed in a single straight line from the end on the left side to the end on the right side.

  Even when the notch K1 is provided, the protrusions 14a and 14b may not be provided on the left and right sides of the notch K1, but may be extended lines of the broken lines C10a and C10b. That is, the upper side of the region along the opening K in the region on the left side of the notch K1 is on the extension line of the broken line C10a, and the upper side of the region along the opening K in the region on the right side of the notch K1 Is on the extension of the polygonal line C10b.

  In the above description, the cutout portion K2 is composed of the wide cutout portion K2a and the narrow cutout portion K2b. However, as shown in FIG. 14, the entire cutout portion K2 is the width of the cutout portion K2b. You may comprise. In this case, the end portion on the left side of the side portion 70d in FIG. 3 is extended to the side portion 70a, and the cutout portion K2 is constituted by the side portion 70a, the side portion 70f, and the side portion 70e. The side part 70f is a side part obtained by extending the side part 70d and the side part 70d in FIG. 3 to the left side surface side.

  In the above description, the opening 110 is provided from the lid 90 to the insertion piece 100. However, when the opening 90 is opened, the lid 90 is opened when the lid 90 is opened. You may make it hold | maintain directly and to make it slide. In addition, the configuration of the opening 110 is omitted, and in the region on the front end side of the upper surface of the lid 90, another rectangular piece (for example, the opening 110) is provided in the region where the insertion piece is continuously provided in the left-right direction. It is good also as a structure which can stick the cover part 90 to a horizontal direction by affixing the one part of the shape and magnitude | size), forming a protrusion part, using the protrusion part as a finger | toe locking part.

  Moreover, the structure of the front part 10, the front flap 70, the cover part 90, and the insertion piece part 100 is good also as a left-right symmetric structure. In other words, in the above description, the left side is defined as the first side and the right side is defined as the second side, but the left side is defined as the second side and the right side is defined as the first side. Good. In that case, when unlocking the packaging box A, the lid 90 is slid to the left side.

A Packaging box K Opening K1 Notch K2, K2a, K2b, K3 Notch J1, J2, J3 Notch 3 Box body 5 Sleeve-like part 10 Front part 10a, 10b, 10c, 10d, 10e, 10f, 12a, 12b 12c, 12d, 12e, 70a, 70b, 70c, 70d, 70e, 70f, 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 100i Side 20 Right side 30 Left side 40 Back side 50 Adhesive margin Part 60 Bottom face part 62, 64, 66, 68 Single part 70 Front flap 70R Engagement area 80 Upper surface part 82, 84 Horizontal flap 90 Lid part 100 Insertion piece part 102 Projection part 104, 106 Corner part 110 Opening part 110a, 110b Notch

Claims (11)

A box body portion (3) having a front surface portion (10), a right side surface portion (20), a left side surface portion (30), a back surface portion (40), and a bottom surface portion (60), and a continuous line from the upper side of the back surface portion via a broken line. The provided lid part (90), the insertion piece part (100) provided continuously from the side part on the tip side of the cover part via a broken line, and the front flap provided continuously from the upper side of the front part via the broken line A packaging box having (70),
A packaging box is formed by a sheet-like blank,
The opening surrounded by the notch (K2) formed along the front side of the front flap and the side of the front flap on the front flap side is between the front and front flaps in the left-right direction. Between the first broken line (C10a) which is the first side broken line in the left-right direction and the second folded line (C10b) which is the second side broken line which is the other side in the left-right direction. Formed,
The cutout portion includes a first end side portion (70a) that is a side portion that forms an end portion on the first side of the cutout portion, and a left and right side portion (70b, which is a side portion formed in the left-right direction). 70d, 70f) and a second end side portion (70e) that forms an end portion on the second side of the notch,
The insertion piece part is an engagement protrusion part (102) which is a protrusion part protruding to the first side, and a tip side corner part protruding from the tip side opposite to the lid part side of the insertion piece part. (104) and an inclined side part which is formed between the engaging protrusion and the tip side corner part and is inclined so as to become the tip side toward the second side of the insertion piece part. (100d), an engagement notch (K3) is formed between the engagement protrusion and the side portion on the tip side of the lid,
The end portion on the first side of the engaging protrusion is located on the first side in the left-right direction with respect to the end portion on the first side of the notch portion, and the front end side corner portion is the notch portion in the left-right direction. In the range from the first side end to the second side end,
When the lid portion is closed, when the tip side corner portion enters the notch portion, the inclined side portion comes into contact with the first side portion, and the insertion piece portion is further lowered so that the inclined side portion becomes the first side portion. By lowering while being in contact with one side, the insertion piece part is lowered while sliding to the second side together with the distal end side of the lid part, and when the engaging protrusion passes through the first side part, By returning to the state before the tip side slides to the second side, the engagement region, which is the region adjacent to the first side of the first side portion of the front flap, is inserted into the engagement notch, and The joint protrusion and the engagement area are engaged, and the packaging box is locked in the closed state,
When releasing the lock from the locked state when the packaging box is closed, by sliding the tip side of the lid part to the second side, the insertion piece part moves to the second side for engagement. A packaging box, wherein the protrusion and the engagement area are disengaged. A box body portion (3) having a front surface portion (10), a right side surface portion (20), a left side surface portion (30), a back surface portion (40), and a bottom surface portion (60), and a continuous line from the upper side of the back surface portion via a broken line. The provided lid part (90), the insertion piece part (100) provided continuously from the side part on the tip side of the cover part via a broken line, and the front flap provided continuously from the upper side of the front part via the broken line A packaging box having (70),
A packaging box is formed by a sheet-like blank,
The opening surrounded by the notch (K2) formed along the front side of the front flap and the side of the front flap on the front flap side is between the front and front flaps in the left-right direction. Between the first broken line (C10a) which is the first side broken line in the left-right direction and the second folded line (C10b) which is the second side broken line which is the other side in the left-right direction. Formed,
The notch includes a first notch component (K2a) provided on the first side and a second notch component (K2b) provided continuously from the first notch component to the second side. Have
The first cutout component includes a first side (70a) that forms an end on the first side of the first cutout component, a second side (70b) formed in the left-right direction, The second side portion is formed with a third side portion (70c) continuous from an end portion on the second side, and the second notch component portion is opposite to the second side portion of the third side portion. A fourth side portion (70d) that is provided continuously from the side end portion and is formed in the left-right direction, and a fifth side portion (70e) that forms the second side end portion of the second notch constituent portion. A distal end proximal end that is formed and is perpendicular to the left-right direction in the direction between the distal end and the proximal end of the front flap in the region along the second side of the first notched component, with the width of the first notched component The first width (NK2a), which is the width in the inter-direction, is the width of the second notch component, and is the width in the direction between the distal proximal ends in the region along the fourth side of the second notch component. Second Is longer than (NK2b), a second width, insertion piece has pluggable to the width of more than the thickness of the insertion piece portion,
The insertion piece part is an engagement protrusion part (102) which is a protrusion part protruding to the first side, and a tip side corner part protruding from the tip side opposite to the lid part side of the insertion piece part. (104) and a first side portion formed between the engaging projection and the tip side corner portion, and inclined so as to be closer to the tip side toward the second side of the insertion piece portion. A side forming side portion (100d) and a second side forming side portion (100f) formed on the second side of the tip side corner portion; An engagement notch (K3) is formed between the sides,
The end portion on the first side of the engaging protrusion is located on the first side with respect to the first side end portion of the first notch constituting portion in the left-right direction, and the tip side corner portion is in the left-right direction. In the first notch component portion, the second side portion in the range from the first side end portion to the second side end portion,
When the lid portion is in the closed state, the front end side corner portion is made to enter the first notch configuration portion, and the insertion piece portion is faced in a state where the second side forming side portion is in contact with the third side portion. When it is slid to the side, the second side forming side portion enters the second notch configuration portion, the first side forming side portion contacts the first side portion, and the insertion piece portion is further lowered. When the first side forming side portion is lowered while being in contact with the first side portion, the insertion piece portion is lowered while sliding to the second side together with the distal end side of the lid portion, and the engaging protrusion is When passing through one side part, the front side of the lid part returns to the state before sliding to the second side, so that an engagement area (an area adjacent to the first side of the first side part in the front flap) 70R) is inserted into the engagement notch, the engagement protrusion and the engagement region are engaged, and the packaging box is closed in the closed state. It is click,
When releasing the lock from the locked state when the packaging box is closed, by sliding the tip side of the lid part to the second side, the insertion piece part moves to the second side for engagement. A packaging box, wherein the protrusion and the engagement area are disengaged. Front end projections (14a, 14b, 14c) projecting upward from the first and second fold lines are formed between the first fold line and the second fold line at the front flap side end of the front portion. The front-end-side protruding portion is in a range from the first side end portion to the second-side end portion of the front portion protruding portion in the left-right direction. Packaging box. The front projection is provided on the first side and spaced in the left-right direction from the first front projection (14a) and the first front projection provided opposite the second side. And a second front surface projecting portion (14b) disposed opposite to the fourth side, and between the first front surface projecting portion and the second front surface projecting portion. The second notch (K1) is formed,
An end on the first side of the second notch is provided at a position facing a midway position from the end on the second side to the end on the second side in the left-right direction, The second side end of the second notch is provided at a position facing the midway position from the first side end to the second side end of the fourth side in the left-right direction,
The front end side protruding portion is in a range from the first side end portion of the first front portion protruding portion to the second side end portion in the left-right direction,
The insertion piece part is located on at least a part of the back side of the first front part projecting part and at least a part of the back side of the second front part projecting part when the packaging box is locked in the closed state. 3. A packaging box according to 3. On the second side of the second side forming side part, a base end side corner (106) formed on the base end side from the front end side corner is formed,
The base end side corner portion is in a range from a first side end portion of the second notch constituent portion to a second side end portion of the second notch configuration portion in the left-right direction. 4. The packaging box according to 4. The second side forming side part (100f) is formed so as to be inclined so as to be closer to the base end side toward the second side of the insertion piece part. 5. A packaging box according to 5. The third side part is inclined with respect to the left-right direction so as to be closer to the second side toward the base end side of the front flap, 7 or 4 or 5 or 6 Packaging box. In the natural state in which the engagement between the engagement protrusion and the engagement region is released, the lid portion is inclined such that the side portion on the tip side faces obliquely upward on the front side, and the front flap is The packaging box according to claim 1, 2, 3, 4, 5, 6, or 7, wherein the side on the tip side is inclined so as to face obliquely upward on the back side. A finger locking portion (110) for locking a finger when the lid portion is opened is provided in a region on the distal end side of the lid portion where the insertion piece portion is continuously provided in the left-right direction. The packaging box according to claim 1, 2, 3, 4, 5, 6, 7, or 8. A box body portion (3) having a front surface portion (10), a right side surface portion (20), a left side surface portion (30), a back surface portion (40), and a bottom surface portion (60), and a continuous line from the upper side of the back surface portion via a broken line. The provided lid part (90), the insertion piece part (100) provided continuously from the side part on the tip side of the cover part via a broken line, and the front flap provided continuously from the upper side of the front part via the broken line A packaging box having (70),
A packaging box is formed by a sheet-like blank,
The opening which consists of the 1st notch part (K2) formed along the side part by the side of the front part of a front flap, and the 2nd notch part (K1) formed along the part by the side of the front flap side of a front part. The portion (K) is a first fold line (C10a) that is a fold line on the first side that is one side in the left-right direction at the fold line between the front portion and the front flap in the left-right direction and the other side in the left-right direction. Formed between second broken lines (C10b) that are second-side broken lines;
The first notch includes a first notch component (K2a) provided on the first side, and a second notch component (K2b) provided continuously from the first notch component to the second side. And
The first notch component part is formed in the left-right direction with a first side part (70a) that forms an end on the first side of the first notch component part and is formed in a direction substantially perpendicular to the left-right direction. The second side portion (70b) is connected to the second side end portion of the second side portion, and is inclined with respect to the left-right direction so that the base side of the front flap becomes closer to the second side. The third side (70c) is formed, and the second notch component is connected to the second side end of the third side, and the fourth side ( 70d) and a fifth side (70e) that forms an end on the second side of the second notch component, the width of the first notch component, and the width of the first notch component. A first width (NK2a), which is a width in the direction between the distal end and the proximal end that is a direction perpendicular to the left-right direction in the direction between the distal end and the proximal end of the front flap in the region along the second side, The width of the two notch components is longer than the second width (NK2b), which is the width in the direction between the distal proximal ends in the region along the fourth side of the second notch component, The width is greater than the thickness of the insertion piece so that the insertion piece can be inserted,
At the end of the front flap side of the front flap, a first front protrusion (14a), which is a protrusion protruding upward from the first folding line, is second on the first side of the second notch. A second front protrusion (14b), which is a protrusion that is provided adjacent to the notch and opposite the second side and protrudes upward from the second fold line, is the second notch. Is provided adjacent to the second cutout portion and facing the fourth side portion,
An end on the first side of the second notch is provided at a position facing a midway position from the end on the second side to the end on the second side in the left-right direction, The second side end of the second notch is provided at a position facing the midway position from the first side end to the second side end of the fourth side in the left-right direction,
The insertion piece portion includes an engagement protrusion (102) that is a protrusion protruding to the first side, and a first corner portion that protrudes from the distal end side opposite to the lid portion side of the insertion piece portion. (104), a second corner portion (106) formed on the second side of the first corner portion, and on a proximal end side of the first corner portion, an engaging protrusion and the first corner A first inclined side part (100d) that is formed between the parts and is inclined so as to be closer to the tip side toward the second side of the insertion piece part, a first corner part and a second A second inclined side portion (100f) that is formed between the corner portions and is inclined so as to be closer to the proximal end side toward the second side of the insertion piece portion. A third notch (K3) is formed between the joint projecting portion and the side portion on the distal end side of the lid portion,
An end portion on the first side of the engaging protrusion is located on the first side in the left-right direction relative to an end portion on the first side of the first notch constituting portion, and the first corner portion is in the left-right direction. In the first notch component, the first side end of the first front portion protruding portion is in the range from the first side end of the second side portion to the end of the second side. In the range from the first end of the second notch to the second end of the second notch in the left-right direction. In the range to the end,
A finger locking portion (110) for locking a finger when the lid portion is opened is provided in a region where the insertion piece portion is continuously provided in the left-right direction in the region on the distal end side in the lid portion,
In the natural state in which the engagement between the engagement protrusion and the engagement region (70R), which is a region adjacent to the first side of the first side portion of the front flap, is released, the lid portion is The side flap is inclined so that it faces the front side obliquely upward, and the front flap is inclined so that the tip side is directed diagonally upward on the back side,
When the lid portion is closed, the insertion piece portion is lowered while the first corner portion enters the first notch configuration portion and the second inclined side portion is in contact with the third side portion. The second inclined side portion slides to the front side while coming into contact with the third side portion of the front flap that is inclined so that the side portion on the tip side faces obliquely upward on the back side, and enters the second notch constituting portion. At the same time, the first inclined side portion comes into contact with the first side portion, the insertion piece portion is further lowered, and the first inclined side portion is lowered while coming into contact with the first side portion, so that the insertion piece portion is covered with the lid. The second part of the insertion piece part descends while sliding to the second side together with the tip side of the part, and the region on the second side of the insertion piece part enters the gap between the second projecting part and the fourth side part, and the projecting projecting part for engagement Passes through the first side part, the front side of the lid part returns to the state before sliding to the second side, so that the front flap The engaging region (70R) is inserted into the third cutout, the engaging projection and the engaging region are engaged, the packaging box is locked in the closed state, and the packaging box is in the closed state. In the locked state, the insertion piece part is located on at least a part of the rear side of the first front part protruding part and at least a part of the rear side of the second front part protruding part,
When opening the lid from the state where the packaging box is locked in the closed state, by hooking the finger to the finger locking portion and sliding the tip side of the lid to the second side, The insertion piece portion moves to the second side, the engagement protrusion and the engagement region are disengaged, and the lid portion tries to return to the natural state, whereby the side portion on the distal end side of the lid portion A packaging box characterized by rotating upward. The packaging box according to claim 9 or 10, wherein the finger locking portion is an opening formed in the lid portion or an opening portion formed from the lid portion to the insertion piece portion.

Images