JP5033865B2 - Packaging box - Google Patents

Description

  The present invention relates to a packaging box, and more particularly, to a lock mechanism that locks the lid of the packaging box in a closed state.

  Conventionally, there is a so-called double lock type packaging box 105 configured as shown in FIGS. The packaging box 105 includes a right side surface portion 112, a front surface portion 114, a left side surface portion 124, a back surface portion 126, a side surface portion 110 including a glue margin portion 128, flap portions 142 and 144, and a lid portion 146. The front part 114 is composed of a front part main body 116 having a notch part at the upper end, and a lateral fold line provided in the notch part. The insertion piece 128 is connected to the front end of the oscillation piece 118 via a broken line, and the lid portion 146 is provided from the upper end of the back surface portion 126. A cover plate 148 and a bent piece 154 are provided, and an insertion hole 156 by a cut K15 is formed at a position between the cover plate 148 and the bent piece 154.

  In order to lock the lid 146 in the closed state, the lid 146 is closed so that the bent piece 154 is in contact with the inner side of the front part 114, and the insertion piece 128 is inserted into the insertion hole 156 formed by the cut K15. Insert. A state where the lid portion 146 is locked in the closed state is as shown in FIG. 11, and the bent piece 154 is entirely hidden behind the front portion 114 and the swing piece 118. In this way, a state in which the lid 146 is closed to such an extent that the insertion piece 128 can be inserted into the insertion hole 156, that is, a state in which the entire bent piece 154 is hidden inside the front portion 114 and the swinging piece 118 is referred to as a “lid. The state where the part 146 is completely closed ”is assumed.

  In order to open the lid in the packaging box 105 locked with the lid 146 closed, the swinging piece 118 is inserted into the swinging part 118 by swinging the swinging part 118 outward by applying a finger to the projecting part 120 provided at the upper end of the swinging part 118. The piece 128 is pulled out from the insertion hole 156. FIG. 14 shows a state in which the insertion piece 128 is pulled out. When the insertion piece 128 is pulled out from the insertion hole 156, the lid portion 146 is rotated upward to open the lid portion 146. At that time, the notch K15 causes the end portion of the lid plate 148 on the bent piece 154 side. The finger is locked at the position of the projecting portion 150 and the semicircular opening K16 formed so as to project, and the end portion on the front side of the lid portion 146 is pulled upward, and the open state as shown in FIG. To do.

  In addition, the applicant knows the literature shown in patent document 1 and patent document 2 as a prior art document.

JP 2009-137606 A JP 2007-168868 A

  However, in the conventional double lock type packaging box shown in FIGS. 11 to 14, even when the insertion piece 128 is pulled out from the insertion hole 156, the lid portion 146 remains closed as it is in the closed state. The bent piece 154 is still entirely hidden behind the front portion 114 and the swing piece 118.

  Therefore, in order to pull out the lid portion 146, it is necessary to pull out the lid portion 146 from a completely closed state, and in particular, the bent piece 154 is sandwiched between the front portion 114 and the flap portions 142, 144. Therefore, a large force is required for pulling out, and it was not possible for an elderly person or a handicapped person with a weak force to easily open the double lock type packaging box. In addition, when a person with a long nail tries to lift the lid 146 by locking the nail to the protrusion 152, a large force is required, which hurts the nail.

  Therefore, the problem to be solved by this patent is to close the lid portion consisting of the lid plate and the bent piece, and then to insert the insertion piece connected to the tip of the swing piece into the lid plate and the bent piece. In the so-called double-lock type packaging box that locks the closed state of the lid by inserting it through the insertion hole between the two, the lid can be opened easily even with a small force, even for the elderly and other weak people It is providing the packaging box which can open a cover part.

  The present invention was created in order to solve the above-mentioned problems. First, the swing provided by forming a first cut group which is a pair of cuts from the upper end of the front portion of the peripheral wall. A piece, an insertion piece connected to the tip of the swinging piece via a broken line, a cover plate part provided continuously from the upper end of the back surface of the peripheral wall, and a tip connected to the tip of the cover plate part via a broken line. In the packaging box having the bent piece and the insertion hole for inserting the insertion piece provided at the position between the lid plate portion and the bent piece, the swing piece is provided between the respective cuts of the first cut group. The swing piece main body is connected to the front portion main body in which a part of the lower end of the swing piece main body is a portion other than the swing piece in the front portion, and from the lower end of the swing piece main body. The swing piece protrusion formed by forming a notch for forming the swing piece protrusion in the front portion with the swing piece protrusion provided continuously. By moving the upper end of the oscillating piece to the front side, the oscillating piece is provided laterally between each notch of the first cut group and the end of the notch for forming the protruding part of the oscillating piece. The oscillating piece projecting portion pushes up the bent piece.

  According to the packaging box having the first configuration, the swinging piece protruding portion pushes up the bent piece by swinging the swinging piece, so that the cover plate portion is rotated, and the cover plate portion and the bent piece are rotated. The lid portion consisting of the above can be partially opened, and thereafter the lid portion can be opened by rotating the lid portion by hand. Since the lid portion may be rotated from a state where the lid portion is partially opened, the lid portion can be opened with a small force, and even a weak person such as an elderly person can easily open the lid portion.

  Also, secondly, in the first configuration, the notch for forming the swinging piece protrusion is formed downward from the inner side in the lateral direction from the lower end of the notch of the first notch group, with a gap therebetween. A second incision group that is a pair of incisions formed, and a third incision group that is a pair of incisions formed so as to be collinear inward from the lower end of each incision in the second incision group; And a protruding cut formed so as to protrude downward between the inner ends of the respective cuts of the third cutting group, and the swinging piece projecting portion is provided continuously from the lower end of the swinging piece main body portion. A swing piece projecting portion main body portion surrounded by the second cut group and the third cut group, and a swing piece projecting portion distal end projecting downward from the swing piece projecting portion main body portion by the projecting cut. The notch part where the tip of the swinging piece projection is fitted to the tip of the bent piece and the swinging part main body is not fitted Characterized in that it is formed.

  Therefore, since the bent piece is pushed up by a stroke corresponding to the length of the swinging piece projecting portion main body, the lower end of the bent piece at the stroke is rotated by rotating the swinging piece more than 90 degrees from the initial state. The folding piece can be pushed upward from the position of the broken line, which is the rotation center of the folding piece, the folding piece can be pushed up greatly, and the lid can be opened with a smaller force.

  Thirdly, in the second configuration, the lid plate portion is closed so that the bent piece is in contact with the inside of the front portion, and the lid plate portion is closed by inserting the insertion piece into the insertion hole. In the locked state, the lower end of the swinging piece projecting portion main body is positioned on the side opposite to the cover plate portion of the bent piece and above the side other than the notch forming position. The lower end of the distal end portion of the moving piece projecting portion is located below the end portion on the back side of the cutout portion formed in the bent piece.

  As a result, when the swinging piece is swung, the swinging piece projecting portion main body can push the bent piece, and the swinging piece projecting portion distal end is fitted to the notched portion of the bent piece. Can do.

  According to a fourth aspect of the present invention, in the second or third configuration, the protruding cut has a substantially arc shape.

  Further, fifthly, in any one of the first to fourth configurations, the pair of cuts forming the first cut group and the pair of cuts forming the third cut group are sides of the upper end of the front portion. It is characterized by being formed in parallel with each other at right angles to the part.

  In addition, it is good also as the following structures. That is, sixthly, a swing piece provided by forming a first cut group which is a pair of cuts downward from the upper end of the front portion of the peripheral wall, and a tip of the swing piece are connected via a broken line. Inserted piece, a lid plate portion provided continuously from the upper end of the back surface of the peripheral wall, a bent piece provided continuously at the front end of the lid plate portion via a broken line, and between the lid plate portion and the bent piece In the packaging box provided with the insertion hole for inserting the insertion piece, the swing piece includes a substantially rectangular swing piece body provided between the cuts of the first cut group, and the swing piece. A swing piece projecting portion continuously provided from the lower end of the main body, with a notch for forming the swing piece projecting portion in the front portion, formed from the lower end of the cut of the first cut group downward from the position inside the lateral direction, A second incision group which is a pair of incisions formed at intervals, and a lower end of each incision in the second incision group. A third cut group, which is a pair of cuts formed so as to be collinear on the inside in the lateral direction, and a protrusion formed so as to protrude downward between the inner ends of the respective cuts of the third cut group A horizontally long, substantially rectangular shape formed by forming a notch for forming a swinging piece projecting portion, which is formed in a shape, and is continuous from the lower end of the swinging piece main body portion and surrounded by the second and third cutting groups. A swing piece projecting portion having a rocking piece projecting portion main body portion and a swing piece projecting portion distal end projecting downward from the swing piece projecting portion main body portion by a protruding cut. The main body is connected to the front portion main body, which is a portion other than the swing piece in the front portion, through a region between the lower end of each notch of the first cut group and the cut for forming the swing piece protruding portion, and is bent. The tip of the piece is formed with a notch that fits the tip of the swinging piece protrusion and does not fit the swinging piece body. By moving the upper end of the oscillating piece to the front side, the oscillating piece is centered on a broken line provided in the lateral direction between each notch of the first cut group and the end of the oscillating piece projecting portion. It swings and the rocking | fluctuation piece protrusion front-end | tip part of a rocking | fluctuation piece protrusion part fits into the notch part of a bending piece, and pushes up a bending piece, It is characterized by the above-mentioned.

  According to the packaging box of the sixth configuration, the swinging piece projecting portion pushes up the bent piece by swinging the swinging piece, so that the cover plate portion rotates and the cover plate portion and the bent piece are rotated. The lid portion consisting of the above can be partially opened, and thereafter the lid portion can be opened by rotating the lid portion by hand. Since the lid portion may be rotated from a state where the lid portion is partially opened, the lid portion can be opened with a small force, and even a weak person such as an elderly person can easily open the lid portion. In particular, since the bent piece is pushed up by a stroke corresponding to the length of the swinging piece projecting portion main body, the lower end of the bent piece at the stroke is rotated by rotating the swinging piece more than 90 degrees from the initial state. The folding piece can be pushed upward from the position of the broken line, which is the rotation center of the folding piece, the folding piece can be pushed up greatly, and the lid can be opened with a smaller force.

  Seventhly, in the sixth configuration, the lid plate portion is closed so that the bent piece contacts the inside of the front portion, and the lid plate portion is closed by inserting the insertion piece into the insertion hole. In the locked state, the lower end of the swinging piece projecting portion main body is positioned on the side opposite to the cover plate portion of the bent piece and above the side other than the notch forming position. The lower end of the distal end portion of the moving piece projecting portion is located below the end portion on the back side of the cutout portion formed in the bent piece.

  As a result, when the swinging piece is swung, the swinging piece projecting portion main body can push the bent piece, and the swinging piece projecting portion distal end is fitted to the notched portion of the bent piece. Can do.

  Eighth, in the sixth or seventh configuration, the protruding cut is substantially arc-shaped.

  According to the packaging box of the present invention, the swinging piece protruding portion pushes up the bent piece by swinging the swinging piece, so that the cover plate portion is rotated and the cover plate portion and the bent piece are separated from each other. The lid portion can be partially opened, and thereafter, the lid portion can be opened by rotating the lid portion by hand. Since the lid portion may be rotated from a state where the lid portion is partially opened, the lid portion can be opened with a small force, and even a weak person such as an elderly person can easily open the lid portion.

It is a front perspective view of the packaging box based on an Example. It is a back perspective view of the packaging box based on an Example. It is a front perspective view of the state where the lid part of the packaging box based on an example was opened. It is an expanded view of the packaging box based on an Example. It is a principal part enlarged view in FIG. It is a principal part enlarged view in FIG. It is a principal part front view of the packaging box based on an Example, and is a principal part front view for demonstrating the positional relationship of a rocking | fluctuation piece and a bending piece. It is a front perspective view which shows the use condition of the packaging box based on an Example. It is a front perspective view which shows the use condition of the packaging box based on an Example. It is explanatory drawing which shows the use condition of the packaging box based on an Example. It is a front perspective view of the conventional packaging box. It is a front perspective view of the state which opened the cover part of the conventional packaging box. It is an expanded view of the conventional packaging box. It is a front perspective view which shows the use condition of the conventional packaging box.

  In this patent, the lid made up of the lid plate and the bent piece is closed, and then the insertion piece connected to the tip of the swing piece is inserted into the insertion hole between the lid plate and the bent piece. In the so-called double-lock type packaging box that locks the closed state of the lid part, the lid part can be easily opened even with a small force, and even a weak person such as an elderly person can easily open the lid part The purpose of providing a packaging box was realized as follows.

  The packaging box 5 based on this patent is comprised as shown in FIGS. 1-7, has the sleeve-like part 10, the upper surface part 40, and the bottom face part 60, and is a sheet-like blank (specifically Is formed of a corrugated cardboard material (preferably a thin corrugated cardboard material) or cardboard.

  The sleeve-shaped portion 10 constitutes a peripheral wall (may be a side surface) of the packaging box 5, and is continuously provided via a broken line from a rectangular plate-like right side surface portion 12 and a front side portion of the right side surface portion 12. The front part 14, a rectangular plate-like left side part 30 that is provided continuously from the side part on the left side of the front part 14 via a broken line, and the side part on the back side of the left side part 30 that is connected via a broken line. It has a square plate-shaped rear surface portion 32, a glue margin portion 34 that is connected from the side portion on the right side surface side of the rear surface portion 32 via a broken line, and an insertion piece 28.

  Here, the front portion 14 includes a front portion main body 16 and a swing piece 18. The front portion main body 16 has a shape having a notch at the center position in the left-right direction of the upper end of the square shape. The shape of the notch is substantially the same as that of the swing piece 18 described later.

  The swing piece 18 is formed in a notch formed in the front portion main body 16 via a fold line and a notch, and the swing piece 18 is provided continuously from the swing piece main body 19 and the lower end of the swing piece main body 19. And a protrusion 22.

  The swing piece main body 19 has a substantially square shape, and is adjacent to the front face main body 16 via the cuts K1 and K2 parallel to each other on both the left and right sides. Are connected to the front portion main body 16 via the polygonal lines C1 and C2, and a swing piece projecting portion 22 is connected to the area between the polygonal lines C1 and C2. Further, the upper end of the swing piece 18 is connected to the insertion piece 28 via the broken lines C3 and C4 and the cut K4.

  Here, the cuts K1 and K2 are formed in a vertical direction (a direction perpendicular to the upper end side of the front portion main body 16). The cuts K1 and K2 correspond to the first cut group. The polygonal lines C1 and C2 are formed in the left-right direction (direction parallel to the upper end side of the front portion main body 16). The polygonal line C1 and the polygonal line C2 are arranged on the same straight line, and the length of the polygonal line C1 and the length of the polygonal line C2 are substantially the same. The broken line C1 is connected in a direction perpendicular to the cut K1 from the lower end of the cut K1, and the broken line C2 is connected in a direction perpendicular to the cut K2 from the lower end of the cut K2.

  Further, a substantially U-shaped cut K4 is formed at a position between the swing piece main body 19 and the insertion piece 28, whereby the swing piece main body 19 has a protrusion 20 at the tip. A region (that is, a rectangular region) other than the protruding portion 20 in the swing piece main body 19 becomes the main body portion 21. The cut K4 is composed of a first cut K4a formed in the left-right direction and second cuts K4b, K4c formed short at right angles from both ends of the first cut K4a. C3 and C4 are connected to the end of the second cuts K4b and K4c opposite to the first cut K4a. The second cuts K4b and K4c form an obtuse angle with respect to the first cut K4a.

  The oscillating piece projecting portion 22 includes an oscillating piece projecting portion main body portion 24 continuously provided from a central position in the left and right direction of the lower end of the oscillating piece main body 19 and the lower end portion of the oscillating piece projecting portion main body portion 24 in the left and right direction. And a swinging piece projecting portion distal end portion 26 continuously provided from the center position. The swing piece projecting portion 22 is adjacent to the front portion main body 16 via a notch (cut for forming the swing piece projecting portion) K3. The cuts K3 are formed in the vertical direction (perpendicular to the upper side of the front body 16) and parallel to each other, and the left and right directions (front) from the lower end of the cut K3a to the inside (the cut K3b side). A cut K3c formed in a direction parallel to the upper side of the main part 16), a cut K3d formed in the left-right direction from the lower end of the cut K3b (to the cut K3a side), and a downward circle between the cut K3c and the cut K3d It is comprised from the cut (projection-like cut) K3e formed in the arc shape. The cut K3c and the cut K3d are formed on the same straight line, the cut K3a and the cut K3b are formed with substantially the same length, and the cut K3c and the cut K3d are formed with substantially the same length. The cut K3a is continuous from the inner end of the broken line C1, and the cut K3b is continuous from the inner end of the broken line C2. The cut K3a is formed in a direction perpendicular to the broken line C1, the cut K3b is formed in a direction perpendicular to the broken line C2, the cut K3c is formed in a direction perpendicular to the cut K3a, and the cut K3d is formed in the cut K3b. It is formed in a perpendicular direction. The cut K3 is continuously formed from the upper end of the cut K3a to the upper end of the cut K3b. The cuts K3a and K3b correspond to the second cut group. The cut group K3c and the cut group K3d correspond to the third cut group.

  The oscillating piece projecting portion main body portion 24 has a substantially rectangular shape (may be a rectangular shape) that is elongated (may be horizontally long) in the left-right direction, and side portions on both sides thereof are provided with cuts K3a and K3b. The side part on both sides at the lower end is adjacent to the front part body 16 through the cuts K3c and K3d. The swing piece projecting portion main body 24 is continuously provided from the region from the lower end of the swing piece main body 19 from both sides of the swing piece main body 19 through a distance corresponding to the lengths of the broken lines C1 and C2. Thereby, the rocking | fluctuation piece protrusion part main-body part 24 is connected with the front part main body 16 via the broken lines C1 and C2.

  Further, the swing piece projecting portion distal end portion 26 has a shape surrounded by the lower end of the swing piece projecting portion main body 24 and an arc-shaped side portion, and the arc-shaped side portion is formed through a notch K3e. Adjacent to the front body 16. As described above, the swing piece projecting portion 22 has a shape projecting in two steps by the swing piece projecting portion main body portion 24 and the swing piece projecting portion distal end portion 26.

  The insertion piece 28 is connected from the tip of the swing piece 18 (the end opposite to the broken lines C1 and C2) via the left and right broken lines C3 and C4, and has a substantially rectangular shape (a square-shaped tip). It is a shape with rounded corners on both sides. Sides on both sides of the insertion piece 28 are formed on the extended lines of the cuts K1 and K2. 4 and 5, the broken lines C3 and C4 are formed on the same straight line as the upper edge of the front body 16.

  Further, the left side surface portion 30 is formed in substantially the same shape as the right side surface portion 12. Further, the back surface portion 32 is formed in substantially the same shape as the front surface portion 14. Moreover, the margin part 34 is formed in the strip | belt-shaped trapezoid shape. The margin portion 34 is bonded to the inner surface of the right side surface portion 12.

  The sleeve-like portion 10 is formed in a cylindrical shape by bonding the adhesive margin portion 34 to the right side surface portion 12.

  Next, the upper surface part 40 has a flap part 42, a flap part 44, and a lid part 46.

  The flap part 42 is connected from the upper end of the right side part 12 via a broken line, and has a substantially rectangular shape. The length from the upper end of the right side surface portion 12 of the flap portion 42 to the opposite side portion is formed to be ½ or less of the length in the left-right direction of the front portion 14 and the back portion 32.

  Moreover, the flap part 44 is continuously provided from the upper end of the left side part 30 via the broken line, and is exhibiting the substantially square shape. The length from the upper end of the left side surface portion 30 of the flap portion 44 to the opposite side portion is formed to be ½ or less of the length in the left-right direction of the front portion 14 and the back portion 32.

  Moreover, the cover part 46 is continuously provided via the broken line from the upper end side part of the back surface part 32, and the cover plate part 48 provided continuously via the broken line from the upper edge part of the back surface part 32, and the cover plate part 48 has a bent piece 54 provided continuously from the side opposite to the back side 32.

  The lid plate portion 48 has a substantially rectangular 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 32, and the side portion ( The lengths up to the broken lines C5 and C6) are substantially the same as the lateral lengths of the right side surface portion 12 and the left side surface portion 30.

  Further, the bent piece 54 is connected from the front end of the cover plate portion 48 (the end portion on the opposite side of the upper end side portion of the back surface portion 32) via the left and right bent lines C5 and C6, and has a substantially horizontally long rectangular shape. It has a shape in which rounds are formed at the corners on both sides of the tip. The broken line C5 and the broken line C6 are formed on the same straight line.

  In addition, a substantially U-shaped cut K5 is formed at a position between the lid plate portion 48 and the bent piece 54, whereby the lid plate portion 48 has a protruding portion 50 at the tip. A region (that is, a rectangular region) other than the protruding portion 50 in the lid plate portion 48 is the main body portion 52. The cut K5 is composed of a first cut K5a formed in the left-right direction and second cuts K5b, K5c formed short at right angles from both ends of the first cut K5a. C5 and C6 are connected to the end of the second cuts K5b and K5c opposite to the first cut K5a. The second cuts K5b and K5c form an obtuse angle with respect to the first cut K5a. By forming the cut K5, when the bent piece 54 is bent with respect to the lid plate portion 48, an insertion hole 56 for inserting the insertion piece 28 is formed. Further, a semicircular opening K6 that is in contact with the left and right cuts in the cut K5 is formed from the protrusion 50 to the main body 52. When the bent piece 54 is bent with respect to the cover plate 52, the cover plate A semicircular cutout is formed at the end of the portion 48.

  In addition, the bent piece 54 has a horizontally long substantially square shape (a shape in which corners on both sides of the square tip are formed with rounded corners) and is located at the center in the left-right direction on the side opposite to the lid plate portion 48. A trapezoidal cutout K7 is formed. The length S1 in the left-right direction at the back of the notch K7 is substantially the same as the length S2 in the left-right direction of the tip end portion 26 of the oscillating piece, and at least the length S1 is longer than the length S2. That is, the length of the swing piece projecting portion main body 24 in the left-right direction is less than S3. That is, when the length S1 is less than the length S2, the swing piece projecting portion distal end portion 26 cannot be fitted into the cutout portion K7, and the length S1 is equal to or longer than the length S3. When the swing piece 18 is swung, the swing piece projecting portion main body 24 enters the notch K7, and the swing piece projecting portion main body portion 24 pushes the bent piece 54. It becomes impossible. In other words, the notch K7 is a “notch portion in which the swing piece projecting portion distal end portion 26 is fitted and the swing piece main body portion 24 is not fitted”.

  Further, the lid portion 46 of the bent piece 54 and the swing piece 18 is locked in the closed state (the lid portion 46 is closed so that the bent piece 54 is in contact with the inside of the front portion 14 and the inserting piece 28 is inserted. The positional relationship in the state of being inserted through the hole 56 is as shown in FIG. 7, and in the vertical direction, the lower end of the swing piece projecting portion main body portion 24 is substantially the same as the side portion K71 on the back side of the notch portion K7. In addition, the lower end of the swing piece protruding portion front end portion 26 is located slightly below the side portion 54 a opposite to the lid plate portion 48 of the bent piece 54. It should be noted that at least the lower end (tip) of the oscillating piece projecting portion main body 24 is provided so that the oscillating piece projecting portion main body 24 can press the bent piece 54 when the oscillating piece 18 is oscillated. Is above the side 54 a of the bent piece 54. In addition, at least the lower end (tip) of the swing piece projecting portion distal end portion 26 is positioned below the side portion K71 of the notch portion K7 so that the swing piece projecting portion distal end portion 26 fits into the notch portion K7. That is, it is necessary to be in a position below the end on the back side of the notch K7. More preferably, the lower end of the swing piece projecting portion main body 24 pushes the bent piece 54 inward, and the tip end portion 26 of the swing piece protrudes into the notch K7 so that the bent piece 54 is moved upward. The lower end of the swing piece projecting portion main body 24 is the same as the position of the side K71 of the notch K7 or below the position of the side K71, and the side of the bent piece 54 It is preferable to be above the portion 54a.

  Further, in the left-right direction, the cutout portion K7 of the bent piece 54 and the swinging piece projecting portion distal end portion 26 are substantially coincident with each other.

  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 continuously provided from the lower end of the right side surface part 12 via a broken line, and is approximately at the tip of a trapezoidal shape (a trapezoidal shape in which one of the side sides is perpendicular to the lower side of the right side surface 12). 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 14, 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 from the lower end of the back surface portion 32 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 32). 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.

  The use state of the packaging box 5 having the above configuration will be described. First, in order to lock the lid portion 46 in the closed state, the lid portion 46 is closed so that the bent piece 54 is in contact with the inside of the front portion 14, and the insertion piece 28 is inserted into the insertion hole 56 formed by the cut K5. Insert. The state where the lid 46 is locked in the closed state is as shown in FIGS. 1, 2, 7, and 10 (a), and the bent piece 54 is entirely inside the front portion 14 and the swing piece 18. It is in a hidden state.

  Next, the operation and action when the lid 46 is opened in the packaging box 5 locked in the closed state will be described.

  First, a finger is applied to the protruding portion 20 provided protruding from the upper end of the swing piece 18 to swing the upper end of the swing piece 18 outward, and the insertion piece 28 is pulled out from the insertion hole 56.

  When the upper end of the swing piece 18 is swung outward, the swing piece 18 rotates about the broken lines C1 and C2. Accordingly, the swing piece projecting portion 22 rotates the bent lines C1 and C2. As a center, the lower end rotates inward (back side). That is, the broken lines C1 and C2 correspond to “a broken line provided in a lateral direction between each cut of the first cut group and the end of the cut for forming the swinging piece protrusion”.

  Then, as shown in FIG. 10B, the swing piece projecting portion main body 24 pushes the outer surface of the bent piece 54 inward, and the swing piece projecting portion distal end portion 26 is fitted into the notch K7. And since the bending piece 54 is pushed upwards, the cover part 46 rotates upwards. In the state of FIG. 10B, the state of FIG. 8 is obtained.

  Then, as the swing piece 18 is rotated, as shown in FIG. 10C, the bent piece 54 is pushed up, and the swing piece 18 is moved from the initial state (state of FIG. 10A) to 90. By rotating more than the degree, the lower end of the bent piece 54 can be pushed upward from the position of the center of rotation (folded lines C1, C2) of the swing piece 18, as shown in FIG. In the state of FIG. 10D, the state of FIG. 9 is obtained.

  As described above, in the state where the lower end of the swing piece projecting portion main body 24 presses the outer surface of the bent piece 54, the tip end portion 26 of the swing piece protrudes into the notch K7 and is bent. 54 is pushed up, the folded piece 54 is pushed up by a stroke of the length S4 to the front end of the folding lines C1 and C2 and the swing piece projecting portion main body 24, and the folded piece 54 is pushed up with a small force by the principle of scissors. be able to. In particular, by rotating the swing piece 18 more than 90 degrees from the initial state, the lower end of the bent piece 54 can be pushed upward from the positions of the broken lines C1 and C2 by the stroke of length S4.

  Therefore, since the lid part 46 is greatly pushed up, after that, the lid part 46 may be rotated by locking the finger to the notch part by the projecting part 50 of the lid part 46 or the semicircular opening K6, By turning the swing piece 18, the bent piece 54 of the lid portion 46 is largely pushed upward, so that the lid portion 46 can be rotated with a small force.

  In other words, if the swing piece protrusion main body 24 is not provided in the swing piece protrusion 22 and only the swing piece protrusion tip 26 is provided from the lower end of the swing piece main body 19. As the oscillating piece 18 is rotated, the distance between the polygonal lines C1 and C2 and the side K71 of the notch K7 becomes shorter (in the case of this embodiment, the distance is kept at the length S4). Although the bent piece 54 is rotated upward, the bent piece 54 is not pushed inward, and the predetermined length (in the above example, the length) from the rotation center (the broken lines C1 and C2) as described above. Since it is not pushed up at the position via S4), even if the swing piece 18 can be rotated and pushed up to the positions of the polygonal lines C1 and C2, it cannot be pushed up any further.

  It should be noted that the packaging box of the present embodiment is not a shape that protrudes in two steps by the swing piece projecting portion main body 24 and the swing piece protrusion portion distal end portion 26, but may be a bent piece that has a shape that protrudes in one step. Since it is possible to push up the lower end of 54 to the position of the broken lines C1 and C2, it is good also as such a structure.

  As described above, in the packaging box of this embodiment, in the so-called double lock type packaging box, the lid can be easily opened even with a small force, and the lid can be easily opened even by a weak person such as an elderly person. Can be opened.

DESCRIPTION OF SYMBOLS 5 Packaging box 10 Sleeve-like part 12 Right side part 14 Front part 16 Front part main body 18 Oscillating piece 19 Oscillating piece main body 20, 50 Projecting part 21, 52 Main body part 22 Oscillating piece projecting part 24 Oscillating piece projecting part main part 26 oscillating piece projecting portion tip 28 insert piece 30 left side surface 32 back surface portion 34 glue margin portion 40 upper surface portion 42, 44 flap portion 46 lid portion 48 lid plate portion 50 bent portion 52 main body portion 54 bent piece 60 bottom surface portion 62, 64, 66, 68 one piece

Claims (5)

A swing piece provided by forming a first cut group which is a pair of cuts from the upper end of the front portion of the peripheral wall, an insert piece connected to the tip of the swing piece via a broken line, and a rear surface of the peripheral wall A lid plate part continuously provided from the upper end of the part, a bent piece continuously provided via a broken line at the tip of the lid plate part, and an insertion piece provided at a position between the lid plate part and the bent piece In a packaging box having an insertion hole for
The swing piece
An oscillating piece body provided between the notches of the first cut group, wherein the oscillating piece body has a lower end part of the oscillating piece body partly connected to the front part body which is a part other than the oscillating piece in the front part. The body,
A swing piece projecting portion continuously provided from the lower end of the swing piece main body, and having a swing piece projecting portion formed by forming a notch for forming the swing piece projecting portion in the front portion;
By moving the upper end of the oscillating piece to the front side, the oscillating piece is oscillated around the broken line provided in the lateral direction between each notch of the first cut group and the end of the notch for forming the protruding part of the oscillating piece. The packaging box, wherein the swinging piece protruding portion pushes up the bent piece. The second notch group, which is a pair of notches formed with a gap formed between the lower end of the notch of the first notch group and the inner side in the lateral direction, the notch for forming the oscillating piece protrusion, Between the third cut group, which is a pair of cuts formed so as to be collinear inward from the lower end of each cut of the second cut group, and the inner end of each cut of the third cut group And a protruding cut formed to protrude downward,
The oscillating piece projecting portion includes an oscillating piece projecting portion main body portion continuously provided from the lower end of the oscillating piece main body portion and surrounded by the second cut group and the third cut group, and the oscillating piece projecting portion main body by the projecting cut. A swinging piece projecting portion tip projecting downward from the portion,
The packaging box according to claim 1, wherein a notch portion is formed at a tip of the bent piece so that a tip end portion of the swing piece protruding portion is fitted and a swing piece main body portion is not fitted. When the cover plate is closed so that the bent piece is in contact with the inside of the front portion, and the closed state of the cover plate is locked by inserting the insertion piece into the insertion hole, the swinging piece protrusion main body The lower end of the part is positioned on the side opposite to the cover plate part of the bent piece and above the side other than the notch forming position, and the lower end of the tip of the swinging piece projecting part is the bent piece. The packaging box according to claim 2, wherein the packaging box is located at a position lower than an end portion on the back side of the formed notch portion. The packaging box according to claim 2 or 3, wherein the protruding cut is substantially arc-shaped. The pair of cuts constituting the first cut group and the pair of cuts constituting the third cut group are formed in parallel to each other at right angles to the side of the upper end of the front part. Or the packaging box of 2 or 3 or 4.

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