Double-side pressing unlocking type paper box

Abstract

The utility model relates to the technical field of paper boxes, in particular to a double-side pressing unlocking type paper box which is formed by cutting and folding a paper board and comprises a front long side plate, a right short side plate, a bottom long side plate and the like. The bottom of the front long side plate is connected with a bottom long side plate in an extending mode, the right side of the front long side plate is connected with a right short side plate in an extending mode, the left side of the front long side plate is connected with a left short side plate in an extending mode, the sides, away from the front long side plate, of the left short side plate and the right short side plate are jointly connected with a rear long side plate, and the rear long side plate is located right behind the front long side plate. After the top long side plate and the front long side plate are encircled, under the action of a second wave-shaped supporting paper sheet and a third wave-shaped supporting paper sheet, a movable locking piece is tightly attached to a pressing piece, and a folding clamping strip limits and blocks the movable locking piece, so that the effect that the lock catch cover page is tightly attached to the inner wall of the front long side plate and is difficult to fall off is achieved; therefore, the state that the top long side plate and the front long side plate are effectively encircled is achieved, and the self-locking stable function of the paper box is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper boxes, and in particular to a double-side press-unlocking paper box. Background Art

[0002] Folding carton is a widely used green packaging container, which is widely used in the packaging of medicines, food, cigarettes and handicrafts, as well as soft drinks, detergents, cultural and educational supplies and small hardware products.

[0003] The Chinese utility model patent with the publication number CN216862114U discloses a self-locking paper box, the purpose of which is to provide a self-locking paper box that is easy to assemble and not easy to fall off and scatter. After the paper box cover is inserted, it is difficult to open it again, so as to improve the packaging efficiency and effectively ensure the use quality of the paper box. The self-locking paper box proposed by the utility model is cut and folded from a corrugated paper sheet, including four side walls connected in sequence, a box bottom and a box cover, a foldable locking tongue is provided on the box cover, and the four side walls adopt a composite structure with a certain thickness, wherein the inner side wall of the second side wall is provided with an opening, so that after the box cover is closed, the locking tongue is inserted into the interior of the second side wall with the box tongue and the position is exactly at the opening of the second side inner wall, and the locking tongue can be ejected into the opening so as to be inserted into the opening and fixed, and the structure is safe and stable, and will not fall off and scatter.

[0004] However, it is difficult to open the lid of the paper box again after insertion, and it is opened through an "eight"-shaped tear-away opening on the top of the box, the "eight"-shaped tear-away opening comprising a first side extending obliquely from the indentation line between the fourth side outer wall and the box top to the edge of one side of the box top; and a second side extending obliquely from the indentation line between the fourth side outer wall and the box top to the edge of the other side of the box top, the first side and the second side are both serrated lines, and the tear-away opening is torn open along the serrated lines of the first side and the second side. Therefore, the paper box cannot be recycled after being torn open, has the defect of limited scope of application, and does not conform to the concept of green environmental protection.

[0005] In the prior art, the self-locking function is also achieved by adding double-sided adhesive. However, this method has the defect of affecting the appearance of the paper box. At the same time, when the paper box is opened for the second time by the double-sided adhesive method, the paper box is still easily damaged.

[0006] Based on this, there is an urgent need to design a double-sided press-to-unlock paper box to achieve a self-locking, stable, easy-to-unlock, and recyclable paper box. Utility Model Content

[0007] In order to overcome the disadvantage that the existing paper box lid is difficult to open a second time after being closed, resulting in the paper box being unable to be recycled, the technical problem to be solved is: to provide a double-sided press-unlocking paper box that is self-locking, stable, easy to unlock, and recyclable.

[0008] The technical scheme is: a double-sided press-unlocking paper box, which is formed by cutting and folding a piece of cardboard, and includes a front long side panel, a right short side panel, a bottom long side panel, a left short side panel, a rear long side panel and a top long side panel, the bottom of the front long side panel is extended to be connected with the bottom long side panel, the right side of the front long side panel is extended to be connected with the right short side panel, the left side of the front long side panel is extended to be connected with the left short side panel, and the left short side panel and the right short side panel are connected to the rear long side panel on the side away from the front long side panel, the rear long side panel is located directly behind the front long side panel, the bottom long side panel is arranged between the bottom edges of the front long side panel and the rear long side panel, the top of the rear long side panel is extended to be connected with the top long side panel, and the front long side panel, the right short side panel, the bottom long side panel, the left short side panel, the rear long side panel and the top long side panel are surrounded to form a closed paper box body; it also includes a pressing piece, a folding card strip, a lock A buckle cover page and a movable locking piece, an end of the top long side panel away from the rear long side panel is connected with a lock buckle cover page, and when the top long side panel and the front long side panel are enclosed, the lock buckle cover page is symmetrically and movably provided with a movable locking piece on one side of the inner wall of the front long side panel, a U-shaped knife groove which is adapted to the movable locking piece and can be passed through is provided on the lock buckle cover page, an n-shaped knife groove is provided at a position adapted to the U-shaped knife groove on the front long side panel, a pressing piece which is adapted to the n-shaped knife groove is movably provided on the front long side panel, the pressing piece contacts and cooperates with the lock buckle cover page, a folding card strip is extended and connected to the top of the front long side panel, the pressing piece on the front long side panel is pressed from front to back, the pressing piece squeezes the movable locking piece, the folding card strip flips upward, a cavity is formed between the front long side panel and the lock buckle cover page, the top long side panel is lifted upward, and the top long side panel is folded upward to open.

[0009] More preferably, it also includes an upper short side folding piece, and the top of the right short side panel and the left short side panel are both extended and connected with the upper short side folding piece. When the enclosed state of the top long side panel and the front long side panel needs to be released, the upper short side folding piece is used to provide auxiliary force when the top long side panel is folded upward.

[0010] More preferably, it also includes lower short side folded pieces and lower long side folded pieces, the bottom extensions of the right short side panel and the left short side panel are connected with the lower short side folded pieces, the bottom extension side of the rear long side panel is connected with the lower long side folded pieces, and after the right short side panel, the left short side panel and the rear long side panel are surrounded by the bottom long side panel, the short side folded pieces and the lower long side folded pieces provide a stable structure for their surrounded state.

[0011] More preferably, a first corrugated supporting paper sheet is further included, and a first corrugated supporting paper sheet is arranged between the upper short side folding sheet and the inner wall of the left short side plate or the right short side plate, and the first corrugated supporting paper sheet provides auxiliary power for the restoration of the upper short side folding sheet after folding.

[0012] More preferably, a second corrugated supporting paper sheet is further included, and the second corrugated supporting paper sheet is arranged between the inner wall of the front long side plate and the folding card strip.

[0013] More preferably, a third corrugated support paper piece is further included. A third corrugated support paper piece is arranged between the side of the movable locking plate facing the U-shaped knife groove and the outer wall of the locking cover page. When the top long side panel and the front long side panel are in the enclosed state, the third corrugated support paper piece provides an auxiliary role in providing a stable connection between the locking cover page and the front long side panel.

[0014] More preferably, it also includes elastic cardboard, which is connected between the inner wall of the pressing plate and the inner wall of the front long side plate. The elastic cardboard is used to strengthen the connection between the pressing plate and the front long side plate, and also to provide auxiliary elastic force for resetting the pressing plate.

[0015] More preferably, the locking cover leaf is an isosceles trapezoidal structure, and the long bottom side of the isosceles trapezoid is connected to the extension of the top long side plate.

[0016] More preferably, when the top long side plate and the front long side plate are in a closed state, the movable locking plate tilts toward the inner wall of the front long side plate by using the connection between the movable locking plate and the locking cover leaf as a fulcrum.

[0017] More preferably, the folding clip strip is folded downward to shield the top of the pressing sheet and press the pressing sheet from the inside out.

[0018] The beneficial effects of the utility model are as follows: 1. By applying a pressing force to the pressing pieces on both sides at the same time, the pressing piece tilts backward with its connection with the front long side plate as a fulcrum, thereby squeezing the movable locking piece in contact with the pressing piece, and the movable locking piece moves in the direction of the U-shaped knife groove, thereby releasing the interlocking function between the front long side plate and the lock cover page, and the folding card strip is folded upward to form a cavity between the front long side plate and the lock cover page. At this time, the top long side plate is folded upward, thereby realizing the function of lifting the top long side plate upward to open the cover, thereby realizing the function of conveniently opening the top cover of the paper box body, which has the advantages of simple unlocking and recyclable use;

[0019] 2. After the top long side panel and the front long side panel are enclosed, under the action of the second corrugated supporting paper sheet and the third corrugated supporting paper sheet, the movable locking piece is tightly attached to the pressing piece, and the folded card strip is used to limit and block the movable locking piece, thereby achieving the effect that the locking cover page is tightly attached to the inner wall of the front long side panel and is difficult to fall off, thereby achieving the effect of effectively enclosing the top long side panel and the front long side panel, thereby realizing the self-locking and stable function of the paper box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1It is a three-dimensional structural schematic diagram of the box cover state of the utility model.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the utility model in the open cover state.

[0023] Figure 3 It is a structural schematic diagram of the utility model in an expanded state.

[0024] Figure 4 It is a schematic structural diagram of the upper short side folding piece, the lower short side folding piece and the first corrugated supporting paper sheet of the utility model.

[0025] Figure 5 It is a schematic structural diagram of the folding card strip, the second corrugated supporting paper sheet and the elastic paperboard of the utility model.

[0026] Figure 6 It is a structural schematic diagram of the U-shaped knife groove, the movable locking piece and the third corrugated supporting paper piece of the utility model.

[0027] Parts names and serial numbers in the figure: 1_front long side panel, 2_right short side panel, 3_bottom long side panel, 4_left short side panel, 5_rear long side panel, 6_top long side panel, 7_n-shaped knife groove, 8_pressing piece, 9_folding card strip, 10_locking cover page, 11_U-shaped knife groove, 12_movable locking piece, 13_upper short side folding piece, 14_lower short side folding piece, 15_lower long side folding piece, 16_first corrugated supporting paper piece, 17_second corrugated supporting paper piece, 18_third corrugated supporting paper piece, 19_elastic paperboard. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] Example: A double-sided press unlocking paper box, please refer to Figure 1 , Figure 2 and Figure 3As shown, the paper box is formed by cutting and folding a cardboard, and includes a front long side panel 1, a right short side panel 2, a bottom long side panel 3, a left short side panel 4, a rear long side panel 5 and a top long side panel 6. The bottom of the front long side panel 1 is extended and connected with the bottom long side panel 3. A transverse folding indentation is provided between the front long side panel 1 and the bottom long side panel 3. The bottom long side panel 3 is folded 90 degrees toward the rear side of the front long side panel 1 with the transverse indentation as a starting point, so that the bottom long side panel 3 intersects vertically with the bottom of the front long side panel 1, and thus the bottom long side panel 3 constitutes the bottom structure of the paper box body; The right side of the long side panel 1 is extended and connected with the right short side panel 2, and the left side of the front long side panel 1 is extended and connected with the left short side panel 4. A longitudinal folding indentation is provided between the front long side panel 1 and the right short side panel 2, and between the front long side panel 1 and the left short side panel 4. The left short side panel 4 and the right short side panel 2 are folded 90 degrees toward the rear side of the front long side panel 1 with the longitudinal indentation as the starting point, so that the right short side panel 2 is perpendicularly intersected with the right end of the front long side panel 1, and the left short side panel 4 is perpendicularly intersected with the right end of the front long side panel 1. In this way, the right short side panel 2 and the left short side panel 4 form The left and right side walls of the paper box body, the specifications and structures of the left short side panel 4 and the right short side panel 2 are exactly the same; the left short side panel 4 and the right short side panel 2 are connected to the rear long side panel 5 on the side away from the front long side panel 1, and the rear long side panel 5 is located directly behind the front long side panel 1. There are longitudinal cutting marks between the rear long side panel 5 and the left short side panel 4, and between the rear long side panel 5 and the right short side panel 2. The structure and specifications of the rear long side panel 5 are exactly the same as those of the front long side panel 1; the bottom long side panel 3 is arranged between the bottom edges of the front long side panel 1 and the rear long side panel 5. The top of the rear long side panel 5 is extended and connected with the top long side panel 6, and a transverse folding indentation is provided between the rear long side panel 5 and the top long side panel 6. When in use, the top long side panel 6 is folded 90 degrees toward the direction of the front long side panel 1 with the transverse folding indentation as the starting point, and the top long side panel 6 forms a 90-degree vertical intersection with the rear long side panel 5 and the front long side panel 1, thereby realizing the function of covering the top cover of the paper box body; the front long side panel 1, the right short side panel 2, the bottom long side panel 3, the left short side panel 4, the rear long side panel 5 and the top long side panel 6 are surrounded to form a closed paper box body.

[0032] Please refer to Figure 2 and Figure 3As shown, it also includes a pressing piece 8, a folding card strip 9, a locking cover page 10 and a movable locking piece 12. The top long side plate 6 is connected to the locking cover page 10 on the side extending away from the rear long side plate 5. The locking cover page 10 is an isosceles trapezoidal structure. The long bottom side of the isosceles trapezoid is connected to the extended edge of the top long side plate 6. A transverse folding indentation is also provided between the locking cover page 10 and the top long side plate 6. The advantages of this arrangement are: when the top long side plate 6 is folded forward and close to the front long side plate 1 and is in contact with the front long side plate 1, the locking cover page 10 is in contact with the front long side plate 1. When the top of the front long side panel 1 is closed, the lock cover page 10 is folded toward the direction of the rear long side panel 5 with the folding indentation between it and the top long side panel 6 as the starting point. At this time, the long side of the isosceles trapezoid is located on the upper side, the short side is located on the lower side, and the waists on both sides are inclined toward the midpoint of the short side of the lower part of the lock cover page 10, thereby facilitating the insertion of the lock cover page 10 into the inner wall of the front long side panel 1, that is, facilitating the insertion of the lock cover page 10 into the inner side of the paper box body, so that the top long side panel 6 and the front long side panel 1 are closed. Provide convenience; when the top long side panel 6 and the front long side panel 1 are in the enclosed state, the lock cover page 10 is symmetrically provided with a movable locking piece 12 on one side of the inner wall of the front long side panel 1. When the top long side panel 6 and the front long side panel 1 are in the enclosed state, the movable locking piece 12 is tilted toward the inner wall of the front long side panel 1 with its connection with the lock cover page 10 as a fulcrum, and a U-shaped knife groove 11 adapted to the movable locking piece 12 and through which the movable locking piece 12 can pass is opened on the lock cover page 10. The lower end of the locking piece 12 overlaps with the lower bottom of the U-shaped knife groove 11. The movable locking piece 12 is a trapezoidal structure cut out from the lock cover page 10. The short side of the trapezoidal structure is fixedly connected to the lock cover page 10. After the movable locking piece 12 is cut out, a U-shaped knife groove 11 is formed on the lock cover page 10 for the movable locking piece 12 to pass through. A folding indentation is provided between the lock cover page 10 and the movable locking piece 12, and the movable locking piece 12 performs a folding movement at the folding indentation.An n-shaped knife groove 7 is provided at a position on the front long side plate 1 that is adapted to the U-shaped knife groove 11. The circumference of the n-shaped knife groove 7 is smaller than the U-shaped knife groove 11. A pressing piece 8 adapted to the n-shaped knife groove 7 is movably provided on the front long side plate 1. The pressing piece 8 is in contact with the lock cover page 10. The lower end of the pressing piece 8 coincides with the lower end of the n-shaped knife groove 7. The pressing piece 8 is a rectangular structure cut out from the front long side plate 1. When cutting, cutting is performed according to the outer edge line of the n-shaped knife groove 7. Since the lower part of the n-shaped knife groove 7 is an opening, the structure of the pressing piece 8 is formed after the cutting is completed. The pressing piece 8 is pushed backward, and the upper part of the pressing piece 8 is separated from the front long side plate 1, and a pressing piece is formed on the front long side plate 1. 8 passes through the n-shaped knife groove 7, and a folding indentation is provided at the connection between the lower part of the pressing piece 8 and the front long side plate 1, so that the pressing piece 8 is easy to fold backwards, and the pressing piece 8 folds backwards to squeeze the movable locking piece 12. Since a folding card strip 9 is extended and connected to the top of the front long side plate 1, a folding indentation is provided between the folding card strip 9 and the front long side plate 1, and the folding card strip 9 is an isosceles trapezoidal structure, and the long side of the isosceles trapezoid is connected to the top extension of the front long side plate 1. This arrangement is convenient for the folding movement of the folding card strip 9. If the folding card strip 9 is a rectangle with the same length as the long side of the front long side plate 1, when folding, the short sides on both sides of the folding card strip 9 will rub against the inner walls of the left short side plate 4 and the right short side plate 2, The folding movement of the folding card strip 9 is hindered; after the folding card strip 9 is folded downward, it blocks the top of the pressing piece 8 and squeezes the pressing piece 8 from the inside to the outside. After the folding card strip 9 is folded downward, the top of the pressing piece 8 is blocked. When the lock cover page 10 moves downward along the inner wall of the front long side plate 1, the folding card strip 9 is squeezed and folded downward by the lock cover page 10 and gradually fits the inner wall of the front long side plate 1, so that the pressing piece 8 is blocked by the folding card strip 9. If the pressing piece 8 is not blocked by the folding card strip 9, when the pressing piece 8 is tilted backward with its connection with the front long side plate 1 as the starting point, it will block the lock cover page 10 from moving downward along the front long side plate 1. When used specifically, it moves synchronously from front to back. Press the pressing pieces 8 on the left and right sides. After the pressing force is applied to the pressing pieces 8, the pressing pieces 8 tilt backwards starting from the folding indentation between the pressing pieces 8 and the front long side panels 1, so that the upper part of the front pressing piece 8 squeezes the movable locking piece 12. After the movable locking piece 12 is squeezed, its upper part moves in the direction of the U-shaped knife groove 11. At the same time, the pressing piece 8 squeezes the folding card strip 9. After the folding card strip 9 is pressed, it turns upward, thereby forming a cavity between the front long side panel 1 and the lock cover page 10. At this time, the top long side panel 6 is lifted upward, and the top long side panel 6 drives the lock cover page 10 away from the inner wall of the top long side panel 6, so that the top long side panel 6 can be folded upward to realize the function of opening the cover of the paper box body. ;

[0033] Please refer to Figure 3As shown, it also includes an upper short side folding piece 13. The top of the right short side panel 2 and the left short side panel 4 are both extended and connected with the upper short side folding piece 13. The upper short side folding piece 13 is also an isosceles trapezoidal structure. The long side of the isosceles trapezoid is connected to the extension of the right short side panel 2 or the left short side panel 4. A folding indentation is provided between the upper short side folding piece 13 and the right short side panel 2 or the left short side panel 4. When it is necessary to release the encircled state of the top long side panel 6 and the front long side panel 1, the upper short side folding piece 13 is used to provide auxiliary force for the top long side panel 6 when it is folded upward. When the upper short side folding piece 13 is folded upward, it will provide an upward force to the left and right sides of the top long side panel 6, thereby providing auxiliary power for the top long side panel 6 to be folded upward.

[0034] Please refer to Figure 3 As shown, it also includes a lower short side folding piece 14 and a lower long side folding piece 15. The bottom extensions of the right short side panel 2 and the left short side panel 4 are connected with the lower short side folding piece 14, and the connection between the lower short side folding piece 14 and the right short side panel 2 or the left short side panel 4 is provided with a folding indentation. The bottom extension side of the rear long side panel 5 is connected with the lower long side folding piece 15, and the connection between the lower long side folding piece 15 and the rear long side panel 5 is provided with a folding indentation. When in use, the lower short side folding piece 14 and the lower long side folding piece 15 are folded upward by 90 degrees, and the lower short side folding piece 14 forms a vertical intersection with the right short side panel 2 or the left short side panel 4, and the lower long side folding piece 15 It forms a vertical intersection with the rear long side panel 5. When the paper box body is enclosed, the lower short side folding piece 14 and the lower long side folding piece 15 are folded upward by 90 degrees and then contact the inner wall of the bottom long side panel 3, thereby providing auxiliary support for the connection between the rear long side panel 5, the right short side panel 2 and the left short side panel 4 and the bottom long side panel 3. In order to make the paper box more secure, glue or double-sided tape can also be adhered to the bottom of the short side folding piece 14 and the lower long side folding piece 15, so that the short side folding piece 14 and the lower long side folding piece 15 are adhered and matched with the inner wall of the bottom long side panel 3, thereby improving the stability and reliability of the connection and achieving the stability of the paper box.

[0035] Please refer to Figure 4 As shown, a first corrugated supporting paper piece 16 is also included. A first corrugated supporting paper piece 16 is arranged between the upper short side folding piece 13 and the inner wall of the left short side panel 4 or the right short side panel 2. The first corrugated supporting paper piece 16 is mainly used to provide a supporting force for the upper short side folding piece 13 to flip up. When the top long side panel 6 and the front long side panel 1 are surrounded, the upper short side folding pieces 13 on both sides provide supporting auxiliary force for the left and right sides of the top long side panel 6 to prevent the top long side panel 6 from folding downward excessively. The first corrugated supporting paper piece 16 is a cardboard with elastic properties folded into a wavy structure. When used specifically, it can also be replaced with a rubber block or spring with elastic properties according to design or use needs.

[0036] Please refer to Figure 5 and Figure 6As shown, it also includes a second corrugated support paper piece 17 and a third corrugated support paper piece 18. The second corrugated support paper piece 17 is arranged between the inner wall of the front long side panel 1 and the folding card strip 9. The third corrugated support paper piece 18 is arranged between the side of the movable locking piece 12 facing the U-shaped knife groove 11 and the outer wall of the lock cover page 10. The second corrugated support paper piece 17 provides elastic support force for the folding card strip 9. The third corrugated support paper piece 18 is arranged between the short side of the movable locking piece 12 and the lock cover page 10. The movable locking piece 12 is tilted away from the lock cover page 10 by taking the connection between it and the lock cover page 10 as the starting point through the third corrugated support paper piece 18. When the top long side panel 6 and the front long side panel 1 are enclosed, the lock cover page 10 moves downward along the inner wall of the front long side panel 1, the lock cover page 10 squeezes the folding card strip 9, the folding card strip 9 approaches the inner wall of the front long side panel 1 and compresses the second corrugated support paper piece 17, and the second corrugated support paper piece 17 is deformed. At the same time, the front long side panel 1 generates an extrusion force on the movable locking piece 12, and the movable locking piece 12 squeezes the third corrugated support paper piece 18 and causes the third corrugated support paper piece 18 to be deformed. As the lock cover page 10 moves downward along the inner wall of the front long side panel 1, the greater the extrusion force on the second corrugated support paper piece 17 and the third corrugated support paper piece 18 is, the more serious the deformation of the second corrugated support paper piece 17 and the third corrugated support paper piece 18 is; as the lock cover page 10 moves away from the inner wall of the front long side panel 1 After the card strip 9 is folded, the second corrugated supporting paper piece 17 and the third corrugated supporting paper piece 18 perform a reset movement, and the second corrugated supporting paper piece 17 drives the folded card strip 9 to tilt backward starting from the connection point between it and the front long side panel 1, so that the outer wall of the folded card strip 9 is in contact with the upper part of the long side panel 6 near the top of the lock cover page 10, and the folded card strip 9 and the second corrugated supporting paper piece 17 form an "eight" shape structure, and the third corrugated supporting paper piece 18 drives the movable locking piece 12 to fit the inner wall of the front long side panel 1, and the inverted "eight" shape structure formed by the third corrugated supporting paper piece 18 and the movable locking piece 12, the third corrugated supporting paper piece 18 is located directly below the second corrugated supporting paper piece 17, and the second corrugated supporting paper piece 17 and the third corrugated supporting paper piece The shaped supporting paper piece 18 is fitted, so that the outer wall of the locking cover page 10 is interlocked with the inner wall of the front long side panel 1, so that the top long side panel 6 and the front long side panel 1 are effectively enclosed, which has a self-locking and stable effect. When unlocking is required, it is only necessary to apply a backward pressing force to the movable locking piece 12 so that the movable locking piece 12 compresses the third corrugated supporting paper piece 18, thereby separating the third corrugated supporting paper piece 18 from the second corrugated supporting paper piece 17. At this time, the top long side panel 6 is folded upward with the connection between the top long side panel 6 and the long side panel 5 as the starting point, and the top long side panel 6 drives the locking cover page 10 upward away from the front long side panel 1, realizing the separation of the movable locking piece 12 and the folding card strip 9, thereby achieving the effect of unlocking the paper box.

[0037] Please refer to Figure 5As shown, an elastic cardboard 19 is also included. The elastic cardboard 19 is connected between the inner wall of the pressing piece 8 and the inner wall of the front long side panel 1. The elastic cardboard 19 is used to strengthen the connection between the pressing piece 8 and the front long side panel 1 to avoid the risk of the folding indentation between the pressing piece 8 and the front long side panel 1 becoming deeper and deeper during long-term use, which may easily lead to the risk of breaking the connection between the pressing piece 8 and the front long side panel 1. Through the provision of the elastic cardboard 19, the connection between the pressing piece 8 and the front long side panel 1 can be strengthened, and a strong restoring elastic force can be provided for the pressing piece 8, thereby avoiding the defect that the pressing piece 8 cannot be restored after being deformed due to long-term pressing.

[0038] When in use, the front long side panel 1, the right short side panel 2, the bottom long side panel 3, the left short side panel 4 and the rear long side panel 5 are enclosed, so that the lower short side folding pieces 14 at the bottom of the left short side panel 4 and the right short side panel 2 are folded upward by 90 degrees, and the lower long side folding pieces 15 at the bottom of the rear long side panel 5 are folded upward by 90 degrees, and the lower long side folding pieces 15 and the lower short side folding pieces 14 are both in contact with the inner wall of the bottom long side panel 3. At this time, the top of the paper box body is in an open state, and the paper box body is in an open state. The top cover of the carton body, i.e., the top long side panel 6, stands on the top of the rear long side panel 5 (please refer to 2). When the top cover of the carton body needs to be covered, that is, when the top long side panel 6 and the front long side panel 1 are enclosed, the top long side panel 6 is folded 90 degrees toward the front long side panel 1 with its connection with the rear long side panel 5 as the center, so that the top long side panel 6 is located directly above the bottom long side panel 3. When the side of the top long side panel 6 connected with the lock cover page 10 is close to the front long side panel 1, the top long side panel 6 is folded 90 degrees toward the front long side panel 1. When the lock cover page 10 is in a state of being moved downwardly, the lock cover page 10 is placed on the inner side of the front long side panel 1 so that the lock cover page 10 is perpendicular to the top long side panel 6, and the movable locking piece 12 moves downwardly along the folding card strip 9, and the movable locking piece 12 and the folding card strip 9 are squeezed against each other, and the second corrugated supporting paper piece 17 and the third corrugated supporting paper are deformed. As the lock cover page 10 continues to move downward until the top long side panel 6 and the front long side panel 1 are completely vertically intersected, the movable locking piece 12 is away from the folding card strip 9, and the second corrugated supporting paper piece 17 and the third corrugated supporting paper are reset, and the outer wall of the lower end of the folding card strip 9 is squeezed and fitted with the outer wall of the movable locking piece 12, and the second corrugated supporting paper piece 17 is located above the third corrugated supporting paper piece 18 and the two are fitted up and down, thereby limiting and fixing the lock cover page 10, realizing the state of encircling the top long side panel 6 and the front long side panel 1 (please refer to 1), and realizing the interlocking function of the top long side panel 6 and the lock cover page 10.

[0039] When it is necessary to release the self-locking function, a pressing force is applied to the pressing plates 8 on both sides at the same time, so that the pressing plates 8 are tilted backward with the connection between them and the front long side panels 1 as a fulcrum, and the movable locking plates 12 are squeezed. The movable locking plates 12 are squeezed by the squeezing force and squeeze the third corrugated supporting paper sheet 18, and the movable locking plates 12 are away from the inner wall of the front long side panels 1, thereby releasing the interlocking function between the front long side panels 1 and the locking cover page 10. At this time, the top long side panels 6 are folded upward with the connection between the top long side panels 6 and the rear long side panels 5 as the center, so that the top long side panels 6 can be lifted up.

[0040] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.

Claims

1. A double-sided press-unlocking paper box, the paper box is formed by cutting and folding a cardboard, and comprises a front long side panel (1), a right short side panel (2), a bottom long side panel (3), a left short side panel (4), a rear long side panel (5) and a top long side panel (6), the bottom of the front long side panel (1) is extended and connected to the bottom long side panel (3), the right side of the front long side panel (1) is extended and connected to the right short side panel (2), the left side of the front long side panel (1) is extended and connected to the left short side panel (4), the left short side panel (4) and the right short side panel (6) are extended and connected to the left short side panel (4), and the left short side panel (4) and the right short side panel (6) are extended and connected to the left short side panel (4). 2) A side away from the front long side plate (1) is connected to a rear long side plate (5), the rear long side plate (5) is located directly behind the front long side plate (1), the bottom long side plate (3) is arranged between the bottom edges of the front long side plate (1) and the rear long side plate (5), the top of the rear long side plate (5) is extended and connected to a top long side plate (6), the front long side plate (1), the right short side plate (2), the bottom long side plate (3), the left short side plate (4), the rear long side plate (5) and the top long side plate (6) together form a closed paper box body; It is characterized in that The invention also comprises a pressing plate (8), a folding card strip (9), a locking cover page (10) and a movable locking plate (12); one end of the top long side plate (6) away from the rear long side plate (5) is connected with the locking cover page (10); when the top long side plate (6) and the front long side plate (1) are in a closed state, the locking cover page (10) is symmetrically and movably provided with a movable locking plate (12) on one side facing the inner wall of the front long side plate (1); a U-shaped knife groove (11) adapted to the movable locking plate (12) and capable of allowing the movable locking plate (12) to pass through is provided on the locking cover page (10); and the front long side plate (1) is provided with a U-shaped knife groove (11) adapted to the movable locking plate (12) and capable of allowing the movable locking plate (12) to pass through. An n-shaped knife groove (7) is provided at a corresponding position, a pressing piece (8) adapted to the n-shaped knife groove (7) is movably provided on the front long side plate (1), the pressing piece (8) contacts and cooperates with the lock cover page (10), a folding card strip (9) is extended and connected to the top of the front long side plate (1), the pressing piece (8) on the front long side plate (1) is pressed from front to back, the pressing piece (8) squeezes the movable lock piece (12), the folding card strip (9) is turned upward, a cavity is formed between the front long side plate (1) and the lock cover page (10), the top long side plate (6) is lifted upward, and the top long side plate (6) is folded upward to open.

2. A double-sided press-to-unlock paper box according to claim 1, characterized in that: It also includes an upper short side folding piece (13). The tops of the right short side plate (2) and the left short side plate (4) are both extended and connected with the upper short side folding piece (13). When it is necessary to release the enclosed state of the top long side plate (6) and the front long side plate (1), the upper short side folding piece (13) is used to provide auxiliary force for folding the top long side plate (6) upward.

3. The double-sided press-to-unlock paper box according to claim 1, characterized in that: The invention also comprises a lower short side folding piece (14) and a lower long side folding piece (15). The lower short side folding piece (14) is connected to the bottom extension of the right short side plate (2) and the left short side plate (4). The lower long side folding piece (15) is connected to the bottom extension side of the rear long side plate (5). After the right short side plate (2), the left short side plate (4) and the rear long side plate (5) are surrounded by the bottom long side plate (3), the short side folding piece (14) and the lower long side folding piece (15) provide a stable structure in the surrounded state.

4. The double-sided press-to-unlock paper box according to claim 2, characterized in that: It also includes a first corrugated support paper sheet (16), which is arranged between the upper short side folding sheet (13) and the inner wall of the left short side plate (4) or the right short side plate (2), and provides auxiliary power for the upper short side folding sheet (13) to return to its original position after being folded.

5. The double-sided press-to-unlock paper box according to claim 1, characterized in that: It also includes a second corrugated support paper sheet (17), which is arranged between the inner wall of the front long side plate (1) and the folding clip strip (9).

6. The double-sided press-to-unlock paper box according to claim 1, characterized in that: The invention also comprises a third corrugated support paper sheet (18), wherein the third corrugated support paper sheet (18) is arranged between the side of the movable locking sheet (12) facing the U-shaped knife groove (11) and the outer wall of the locking cover page (10), and when the top long side plate (6) and the front long side plate (1) are in a closed state, the third corrugated support paper sheet (18) provides an auxiliary function for the stable connection between the locking cover page (10) and the front long side plate (1).

7. The double-sided press-to-unlock paper box according to claim 1, characterized in that: It also includes an elastic cardboard (19) connected between the inner wall of the pressing plate (8) and the inner wall of the front long side plate (1). The elastic cardboard (19) is used to strengthen the connection between the pressing plate (8) and the front long side plate (1) and also to provide auxiliary elastic force for the resetting of the pressing plate (8).

8. The double-sided press-to-unlock paper box according to claim 1, characterized in that: The lock cover leaf (10) is an isosceles trapezoidal structure, and the long bottom side of the isosceles trapezoid is connected to the extension of the top long side plate (6).

9. The double-sided press-to-unlock paper box according to claim 1, characterized in that: When the top long side plate (6) and the front long side plate (1) are in a closed state, the movable locking plate (12) tilts toward the inner wall of the front long side plate (1) with the connection between the movable locking plate (12) and the locking cover leaf (10) as a fulcrum.

10. The double-sided press-to-unlock paper box according to claim 1, characterized in that: After the folding clip strip (9) is folded downward, it shields the top of the pressing sheet (8) and presses the pressing sheet (8) from the inside out.

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