box with flat crawl buckle

Abstract

The invention relates to a box, in particular to a box with flat climbing buckles to close the opening of the box cover and the box bottom, and the folding part has a shaft, the box cover and the box bottom are folded outward along the horizontal shaft, and the long and wide box plates are folded or unfolded along the vertical shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to a box, in particular to a box with flat climbing buckles to close the opening of the box cover and the box bottom, and with shafts at the folding parts, the box cover and the box bottom being folded outwardly at the horizontal shaft, and the long and wide box plates being folded or unfolded along the vertical shaft. BACKGROUND

[0002] The box is a loading tool, and is the outer packaging of products from the factory to the user, and is an indispensable protection device in the production, storage, circulation and transaction of goods.

[0003] The commonly used boxes are made of paper such as yellow board paper, and are easily damaged due to extrusion and moisture in circulation. The boxes are sealed with adhesive tape and reinforced with packing tape, and have the problems of unreliable sealing and broken paper box plates. The paper-made boxes have low strength and poor toughness, and are easily damaged in large-scale and rapid circulation and transportation. The foams in the shock-absorbing boxes and the foams in the heat-insulating boxes are used only once and become garbage as soon as they are received by the user, which is not conducive to recycling and resource saving, and causes waste and environmental pollution. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application aims to provide a box with flat climbing buckles and shafts at the folding parts, which can be folded and unfolded, and is solid and durable, has high strength and good toughness, is not easily damaged, has light weight, is not easily damp, saves space after folding, and is convenient to store and transport.

[0005] In order to achieve the above-mentioned purpose, the present application provides a box with flat climbing buckles and shafts at the folding parts, which can be folded and unfolded, and is solid and durable, has high strength and good toughness, is not easily damaged, has light weight, is not easily damp, saves space after folding, and is convenient to store and transport.

[0006] For the convenience of description, first assume a rectangular box with six faces, and design the shape and size according to the length, width and height. Two long box plates are arranged left and right, called left box plate and right box plate. Two wide box plates are arranged front and back, called front box plate and back box plate. The left box plate and the right box plate are collectively referred to as long box plates, the front box plate and the back box plate are collectively referred to as wide box plates, and the long box plate and the wide box plate are collectively referred to as vertical box plate. The box plate on the top of the box is called the box cover, and the box plate on the bottom of the box is called the box bottom. The box cover and the box bottom associated with the left box plate are called the left box cover and the left box bottom. The box cover and the box bottom associated with the right box plate are called the right box cover and the right box bottom. The box cover and the box bottom associated with the front box plate are called the front box cover and the front box bottom. The box cover and the box bottom associated with the back box plate are called the back box cover and the back box bottom. The left and right box covers and the front and back box covers are collectively referred to as box covers, and the left and right box bottoms and the front and back box bottoms are collectively referred to as box bottoms. For the convenience of folding, assume that the thickness of all box plates is equal. The left and right box covers and the box bottoms are divided into two halves according to the width of the box, and the length is equal to the length of the box. The front and back box covers and the box bottoms are divided into two halves according to the length of the box, and the width is equal to the width of the box minus two thicknesses, that is, the two wide sides of the front and back box covers and the box bottoms are inside the box. The box cover and the box bottom have inner and outer layers, the front and back box covers and the box bottoms are the inner layer, and the left and right box covers and the box bottoms are the outer layer.

[0007] The so-called reverse folding is to cut a vertical box plate along a vertical line, turn it over and fold it. After folding, the inside faces outward and the outside faces inward. Because it is opposite to the ordinary direct flattening and folding, it is called reverse folding.

[0008] The vertical U-shaped piece on the two sides of the long box plate is called a long vertical U-shaped piece, and the other is called a double-hole elbow U-shaped piece. The double-hole elbow U-shaped piece includes two types, one is a double-hole coupling piece that can rotate, and the other is a double-hole fixed piece that does not move, called an elbow U-shaped piece. The U-shaped pieces at the upper and lower ends are called long horizontal U-shaped pieces. The U-shaped pieces on the two sides of the wide box plate are called wide vertical U-shaped pieces, and the U-shaped pieces at the upper and lower ends are called wide horizontal U-shaped pieces. The U-shaped pieces of the left and right box covers and the box bottoms are called long cover U-shaped pieces, and the U-shaped pieces of the front and back box covers and the box bottoms are called wide cover U-shaped pieces. The above eight types of U-shaped pieces are collectively referred to as U-shaped pieces. To distinguish from the double-hole elbow U-shaped piece and the elbow U-shaped piece, the remaining six types of U-shaped pieces are also called flat U-shaped pieces. Generally, long horizontal U-shaped pieces and long cover U-shaped pieces are paired and matched, and wide horizontal U-shaped pieces and wide cover U-shaped pieces are paired and matched. The vertical shaft is called a vertical shaft, and the horizontal shaft is called a horizontal shaft.

[0009] The two sides of the box cover and the box bottom are sealed with a sealing piece to seal the soft box plate, and the mouth of the box cover and the box bottom is sealed with a locking piece to seal the soft box plate and install male and female flat climbing buckles.

[0010] In the double-hole coupling, the hole that can swing is called the dynamic hole, and the other hole that is matched with the round hole of the flat U-shaped piece as a concentric circle with the concave-convex structure is called the fixed hole. A vertical shaft is inserted into the concentric hole to connect the double-hole coupling and the flat U-shaped piece to form a double-hole elbow U-shaped piece. The double-hole coupling can swing around the vertical shaft within the range of 0°-180°. When the double-hole coupling and the flat U-shaped piece form a 90° right angle position, the two pieces are fixed together, and the back plate is removed to form an elbow U-shaped piece. The position of the double-hole remains unchanged. The Y-shaped structure at the ends of the U-shaped piece, the locking piece, the long-slot U-shaped piece, the sealing piece, and the square-hole sealing piece is provided with a 45° bevel and positioning teeth in the shape of complementary concave and convex shapes on the bevel. A long box plate uses one elbow U-shaped piece and three flat U-shaped pieces, and a reverse folding box long box plate uses one double-hole elbow U-shaped piece and three flat U-shaped pieces. A wide box plate uses four flat U-shaped pieces. Each box cover and box bottom uses one locking piece, one flat U-shaped piece, and two sealing pieces. The front and rear box covers and box bottoms without flat climbing buckles use two sealing pieces, one long-slot U-shaped piece, and one flat U-shaped piece. The box plates of the extendable front and rear box covers and box bottoms use two sealing pieces, one square-hole sealing piece, and one flat U-shaped piece. According to the positioning teeth, the horizontal and vertical pieces are spliced into a square, and the frame of the box plate is formed. The soft box plate composed of inner and outer panels and flat top corrugated plates is installed in the frame. The inner and outer panels around the edges of the soft box plate are pressed into the grooves on the two sides of the "Y" shape using 90° pressure plates with rivet holes and bevels and straight pressure plates, respectively, and are fixed using rivets. The 90° pressure plates are installed at the butt joint of the 45° bevel of the frame, and mainly connect the two Y-shaped pieces at the bevel corner into one piece. To strengthen the stability of the frame, double-headed Y-shaped pieces and double-bevel pressure plates can be added as reinforcing support rib plates in the horizontal and vertical directions of the frame. Each box plate is paired according to the mutual position relationship in the box. In the two U-shaped pieces that need to be connected together on the paired box plate, the paired U-shaped pieces between the long and wide box plates use the equal-interval concave-convex structure of the crescent moon to match the round holes of the two U-shaped pieces as concentric circular holes. The bottom of the concave section has a single-sided crescent moon, which can prevent the matching convex section from rotating to one side of the crescent moon. This allows the two U-shaped pieces to rotate relative to each other around the same shaft within the range of 0°-90°. Because the long and wide box plates associated with each other rotate within the range of 0°-90° when the box is unfolded and folded. The paired U-shaped pieces between the box cover and box bottom and the long and wide box plates use the equal-interval concave-convex structure to match the round holes of the two U-shaped pieces as concentric circular holes. Because the bottom of the concave section does not have a crescent moon, the two U-shaped pieces can rotate relative to each other around the same shaft within the range of 0°-180°. Because the angle of the box cover and box bottom when opened is equal to or greater than 180°. Each pair of U-shaped pieces is connected by a shaft to form a box with twelve box plates.

[0011] The flat U-shaped piece is combined by "U" shape and "Y" shape from the cross section. The "U" shape is similar to "U" shape, and the opening of "U" is closed by a horizontal plate, which is called flat mouth part, and a concentric circular hole is added in the semicircle to form "U" shape. The double-hole connecting piece is similar to the butt joint of two flat mouth parts of "U" shape, and a back plate is added to splice them together. The "Y" shape is a vertical plate with two symmetrical inclined bodies extending left and right at the top of the vertical plate, and a short vertical plate at the top of each inclined body. The vertical plate is similar to the vertical line of the lower half of "Y", and the two symmetrical inclined bodies are similar to the upper half of "Y". The lower end of "Y" shape is perpendicular to the flat mouth part of "U" shape, and the flat U-shaped piece is formed. A flat plate perpendicular to the tail of "Y" is added to the lower end of "Y" shape to form the edge sealing piece. A long vertical plate is added to one end of the flat plate of the edge sealing piece downward, and a small flat plate is added to the long vertical plate in the same direction as the flat plate to form the edge locking piece. The number of small flat plates depends on the material used and the specific size of the long vertical plate. The function of the small flat plate is to reduce the warping deformation of the long vertical plate, act as a reinforcing rib, support each other when the two edge locking pieces are buckled, and seal dust and debris.

[0012] The edge sealing piece is installed on both sides of the box cover and the box bottom to block and reinforce the soft box plate. The edge locking piece is provided with a plurality of positioning card slots for installing male and female buckles, and the "Y" shape at the card slot is removed. The number of positioning card slots is determined according to the number of male and female buckles required for sealing the box. The side with the small flat plate of the two edge locking pieces is buckled opposite to each other at the box opening, and is used in pairs. One piece is installed with male buckle, and the other piece is installed with female buckle. The edge locking piece not only connects the soft box plate at the opening, but also fixes the male and female buckles. The male buckle and the female buckle are installed in the edge locking pieces of the box cover and the box bottom respectively, and the male and female buckles are fixed in the rivet holes of the "Y" shape at the positioning card slots by rivets. After the male and female buckles are buckled, the box cover and the box bottom are sealed, and cannot be opened without prying.

[0013] The male and female buckles are called flat climbing buckles. The male buckle has two symmetrical clamping jaws, which are composed of a buckle head and a curved clamping arm formed by two 90° straight bends, similar to a "T" structure, with a horizontal top being the buckle head and a vertical representing the curved clamping arm. The curved clamping arm is used to make the male and female buckle structures symmetrical and coordinated, and to provide space for the U-shaped clamping buckle of the buckle pressing plate. The structure of the male buckle is symmetrically distributed along the center line between the left and right surfaces. The bottom boss of the buckle head is the lower buckle hook, and the leftmost and rightmost bosses on the two buckle heads are the left and right locking tongues. The upper part of the buckle head outside the clamping arm is the upper buckle hook, which includes the locking tongue. There is a step between the locking tongue and the top surface of the buckle head, which is called the locking step. There is a step between the bottom surface of the locking tongue and the bottom surface of the lower buckle hook, which is called the sliding step. The lower and upper buckle hooks are like the hooks of the clamping jaws, which are used to hook the lower and upper buckle platforms of the female buckle body. The surface of the buckle head connected with the clamping arm is the hooking surface, which contacts and fits with the buckling surface of the female buckle when the male and female buckles are buckled. The left and right opposite inclined surfaces on the two buckle heads are the pushed inclined surfaces, and the inclined angle of the pushed inclined surfaces is less than 12°. The roots of the clamping arms are connected with the male buckle body, and each root has a narrow vertical slot, two small inclined platforms and a small gap in the center. The tail of the male buckle body has the same structure as the tail of the female buckle body, which is a U-shaped slot composed of two straight pressing plates, with a rivet hole and an inclined surface. The inclined surface here is the same as the inclined surface of the pressing plate, which is used to press the inner and outer edge parts of the soft box plate with the "Y" shaped inclined surface.

[0014] The female buckle is composed of a female buckle body and a buckle pressing plate connected by a buckle shaft. The buckle pressing plate can swing around the buckle shaft within a certain angle range to realize the actions of pressing buckle, unfastening buckle and allowing space. The structure of the female buckle body is divided into three parts: front, middle and tail, and is symmetrically arranged along the center line between the left and right surfaces. From the front, the outer shape of the female buckle body is a positive long fractal structure. The middle part is a "cross" shaped through hole. The top end of the "cross" has a space allowing surface. The small square through hole in the upper part of the "cross" has a buckle shaft through hole perpendicular to the left and right surfaces. The long through slot in the middle part of the "cross" is a sliding groove. The wide surface at the length ends of the sliding groove is a sliding stop surface. The through hole on the top platform of the sliding stop surface is a left and right locking hole. The hole wall of the locking hole is closed. The long vertical surface at the front end in the sliding groove is a lower buckle platform. The left and right rectangular column raised along the lower buckle platform is a left and right upper buckle platform. When the male and female buckles are hooked, the lower buckle platform is in contact with the lower buckle hook, and the upper buckle platform is in contact with the upper buckle hook. That is, the common surface of the three, the lower buckle platform and the left and right upper buckle platforms, is the fastening surface of the female buckle. The upper part of the left and right upper buckle platforms has a pressing platform extending to the center. The length of the pressing platform is slightly smaller than the swinging distance of the clamping arm. The space below the pressing platform can accommodate the swinging of the clamping arm. The pressing platform mainly assists the locking hole in pressing the clamping arm and prevents the clamping arm from being damaged due to the rocking of the buckle pressing plate, thereby playing the function of the locking hole. The vertical surface of the locking hole towards the inside is a locking surface. When the lock tongue slides into the locking hole, the locking surface stops the sliding of the lock tongue after the locking platform collides with the locking surface. The locking surface is also the starting surface of the left and right extension of the locking hole. When the buckle head slides left and right in the sliding groove, the sliding stop platform of the lower buckle hook collides with the sliding stop surface, and the sliding of the buckle head is stopped. The short through slot at the lower end of the "cross" is used for allowing space for the double inclined surface boss on the buckle pressing plate when it swings. The front part of the female buckle body is a front platform with a space allowing notch extending from the bottom surface. The space allowing notch is used for allowing space for the bottom of the U-shaped buckle on the buckle pressing plate. The large and small space allowing notches should not hinder the normal work of the U-shaped buckle. The front platform provides support for the pair of clamping arms of the male buckle when they are fastened and controls the distance between the male and female buckles.

[0015] The structure of the buckle plate is symmetrically distributed along the center line between the left and right faces, and the buckle plate is the body of the buckle plate, which connects the front, middle and tail parts into one. The front end is a long notch with a U-shaped buckle, which is composed of a fixed hook and a movable hook. The fixed hook is integrated with the back of the face plate of the buckle plate, and the outer side of the movable hook has a buckle tooth. The middle part of the buckle tooth is provided with a notch opposite to the small notch position in the male buckle. The notch has a slightly convex vertical platform. This setting is to provide an entrance for the insertion of the tool when prying the buckle plate, and to protect the buckle tooth from being damaged. The movable hook has a certain elasticity and can swing under external force. There is a space between the two ends of the U-shaped buckle and the long notch. The large area of the plate plane of the buckle plate is to shield the clamping arms after buckling. The middle part is mainly a double-bevel boss composed of two main push bevels symmetrically arranged on the left and right sides of the double-bevel boss. The reaction forces generated by the push bevels on the left and right sides of the buckle head are offset to each other to ensure that the buckle plate will not be skewed due to the reaction force. The design of the main push bevel and the pushed bevel has the following functions: first, the force amplification effect is good, making it easy and labor-saving to press the buckle plate; second, the angle of the main push bevel and the pushed bevel is equal and less than 12°, having a self-locking function; the clamping arm always has a rebounding reaction force, but the buckling system remains stable due to the self-locking function of the bevel; third, the downward vertical pressure of the buckle plate is converted into the left and right horizontal sliding of the two buckle heads. The tail part of the buckle plate is a concentric circular ring structure, and the hole can pass through the buckle shaft.

[0016] When buckling, the two symmetric main push bevels of the buckle plate push the pushed bevels of the two buckle heads, making the two buckle heads slide to the left and right sides at the same time, so that the lock tongue enters the lock hole, a part of the width of the clamping arm enters the lower surface of the pressure platform, and the buckle tooth of the U-shaped buckle of the buckle plate enters the lower surface of the small bevel platform of the male buckle. At this time, the buckle plate is clamped, and the flat climbing buckle enters the locked state. At this time, the male and female buckles are hooked together, and the buckle tooth cannot retreat and be released.

[0017] When the box is empty or the contents in the box are not full, the mouth of the box cover is prone to collapse, making it inconvenient to press the flat climbing buckle. A self-balancing device is added to the flat climbing buckle to automatically balance after the buckle is buckled.

[0018] The specific method is to add two narrow rectangular bodies on the left and right sides of the front platform of the female buckle body. The narrow rectangular body is longer than the front platform. A lower sunken step is dug out on the outside of each clamping arm of the male buckle body. The thickness of the lower sunken step is equal to that of the front platform. The length of the lower sunken step is larger than the difference between the length of the narrow rectangular body and the length of the front platform, mainly to avoid interference during buckling. In order to avoid affecting the swinging of the clamping arm, a narrow vertical through slot is also provided between the lower sunken step and the clamping arm.

[0019] After the flat climbing buckle is buckled, the bottom surface of a pair of clamping arms is pressed on the surface of the front platform, and the narrow cuboids on both sides of the front platform are pressed on the recessed step surface outside the two clamping arms, and they support each other and are pressed on each other to achieve self-balancing, so that the box cover opening part cannot collapse. The flat climbing buckle is provided with a self-balancing device on both sides, which is to avoid the force skewing phenomenon that may occur when only one side is provided.

[0020] The flat climbing buckle provided with the self-balancing device is referred to as a self-balancing flat climbing buckle. The female buckle body is referred to as a self-balancing female buckle body, and the male buckle is referred to as a self-balancing male buckle.

[0021] The vertical flat climbing buckle does not have a collapse problem when it is buckled or opened on the bottom plane of the heat preservation cone plate, and therefore, the self-balancing device is not provided.

[0022] If the front and rear box cover box bottoms are also buckled with the flat climbing buckle, the front and rear box plates will protrude much more than the left and right box covers after the box is folded, which may affect the stacking. Since the front and rear box plates are in the inner layer of the box, the front and rear box cover box bottoms without the flat climbing buckle or the telescopic box plate structure can be used to remedy it.

[0023] In the front and rear box cover box bottoms without the flat climbing buckle, a long slot U-shaped piece is used to replace the locking edge piece to block and connect the soft box plate at the opening part of the box plate. The U-shaped part of the long slot U-shaped piece is provided with a plurality of pairs of grooves and narrow rectangular through holes, and a thin rectangular body is arranged between the bottom of the groove and the narrow rectangular through hole. The middle part of the thin rectangular body can be deformed to make room for the narrow rectangular through hole after being pressed. Straight buckling teeth are installed in the groove and connected by a shaft. The structure of the straight buckling teeth is similar to that of the square vertical teeth added to the top of the flat opening part of the "U" shape. The radius of the "U" shape is R1, and the distance between the bottom surface of the groove and the center of the straight buckling teeth is also equal to R1. A half circle with a radius R2 is added to the middle part of the length of the straight buckling teeth, and R2 is larger than R1. A vertical surface and a top plane are made on the left side of the straight buckling teeth and the top of the R1 arc, which are tangent to R1. A vertical surface is added on the right side, which is tangent to R2. When the left vertical surface and the top plane are located on the bottom surface of the groove, the thin rectangular body can be deformed by using a point force to press the straight buckling teeth due to the action of R2. This structure mainly prevents the straight buckling teeth from swinging freely when they are erected and pulled flat in the groove of the long slot U-shaped piece. The vertical surface added on the right side is mainly to prevent the straight buckling teeth from being pulled in the opposite direction.

[0024] At the position where the square vertical teeth of the straight buckling teeth erected in the groove of the long slot U-shaped piece coincide, a long hole Y-shaped piece and a long hole pressing plate are arranged to replace the long hole through slot, and the square vertical teeth can be inserted into the long hole through slot. The double inclined pressing plates located on the outer surface of the box plate do not have long holes. In this way, the combination of the square vertical teeth and the long hole through slot can also pull the wide box plate to prevent it from bulging and being exposed. After the straight buckling teeth are pulled flat, it is convenient to fold and stack the box.

[0025] The front and rear box cover box bottom without flat climbing buckle, because there is no need for two box covers to directly buckle each other, only with the long hole Y-shaped piece and the long hole pressing plate on the long hole slot of the left and right box cover box bottom, the length is no longer affected by the length of the box, only needs to be shorter or equal to the width size of the left and right box cover box bottom.

[0026] The number of pairs of grooves and narrow rectangular through holes refers to the thin rectangular body at the bottom of the groove deforms when subjected to force, so the outside needs to be provided with a narrow rectangular through hole, so the groove and the narrow rectangular through hole appear in pairs. The number of pairs of grooves and narrow rectangular through holes needs to be appropriately set according to the width size of the box and the number of required straight buckling teeth.

[0027] The two 90° straight bending, that is, the clamping arm is first a horizontal part length, bends 90° to the center line direction, is perpendicular to a size, and then bends 90° forward, and then extends a horizontal size to form a curved shape.

[0028] The long slot U-shaped piece is composed of a plurality of pairs of grooves and narrow rectangular through holes at the U-shaped part of the flat U-shaped piece.

[0029] The long hole Y-shaped piece and the long hole pressing plate are provided with rectangular hole slots on the double-head Y-shaped piece and the double-inclined pressing plate, which correspond to the number, position and size of the square vertical teeth of the straight buckling teeth on the long slot U-shaped piece.

[0030] For the box such as the heat preservation box and the air bag box, if the shock absorbing plate, the heat preservation plate and the air bag are not suitable for being installed on the front and rear box cover box bottom, it is considered to be more suitable to be installed on the left and right box cover box bottom. At this time, only the inner and outer layer positions of the front and rear box cover box bottom and the left and right box cover box bottom are exchanged, that is, the left and right box cover box bottom is located in the inner layer, and the front and rear box cover box bottom is located in the outer layer. If the difference between the length of the folded front and rear box cover box bottom and the left and right box cover box bottom affects the stacking of the folding box, a telescopic device is added in the front and rear box cover box bottom. When sealing the box, it is lengthened, so that the flat climbing buckle can be buckled. When folding, it can be pushed back to the original position.

[0031] The specific method is to replace the locking piece with a square hole sealing piece at the box plate opening, and remove the flat top corrugated plate at the same position as the rectangular through hole. The square hole sealing piece is provided with a plurality of rectangular through holes penetrating the Y-shaped structure on the front surface of the sealing piece flat plate. The number of rectangular through holes needs to be appropriately set according to the width of the front and rear box cover box bottom. A T-shaped long strip is installed in the square hole of the square hole sealing piece. The head of the T-shaped long strip is provided with left and right shoulders, and the tail is provided with a rivet hole. The T-shaped head is installed in the soft box plate and can slide. A notch with the same position and size as the square hole of the square hole sealing piece is opened at the Y-shaped part of the flat climbing buckle locking piece without inclined edge locking piece. Two straight pressing plates are used to press the tail of the T-shaped long strip and rivet it. In this way, the flat climbing buckle is separated from the box plate, and when sealing the box, it is lengthened and buckled, and when folding, it is retracted, which is convenient for stacking and packaging.

[0032] The diameter of the two outer semicircles of the double-hole coupling is equal to the wall thickness of the box plate, the length of the center line of the two circles is equal to the wall thickness of the box plate, and the diameter of the two inner circular holes is equal to the diameter of the rotating shaft. The concave segment associated with the convex segments of the two flat U-shaped pieces is formed by rotating a circular cutter with a diameter equal to the wall thickness along the center line of the two inner circular holes, respectively. The cross-sectional area formed by the center line and the perpendicular passing through the midpoint has two semicircular crescents. Each semicircular crescent is divided into two crescents along the center line, resulting in four crescents. Three crescents that interfere with folding are removed to ensure that the outer circle of the convex segment of the U-shaped piece that matches it rotates in the groove, leaving one crescent to connect the convex segments at both ends of the remaining concave segment. A reinforcing plate with a width less than or equal to half the size of the wall thickness and a suitable thickness is added to the back of the crescent, also known as the back plate. This plate vertically penetrates the entire double-hole coupling to increase the strength of the crescent.

[0033] In the double-hole coupling, the circular hole with two crescents removed from the concave segment is a fixed hole. Because the long vertical U-shaped piece that matches it needs to rotate relatively within the range of 0°-180°. The circular hole with one crescent removed from the concave segment is a moving hole, because the wide vertical U-shaped piece that matches it needs to rotate relatively within the range of 0°-90°. The crescent and the back plate are on the inside of the box, and the back plate does not affect the appearance of the box.

[0034] A piece of vertical box plate in the unfolded box is cut along the vertical edge of the opening end of the fixed frame, dividing the whole vertical box plate into two pieces of large and small sizes. A fixed frame with several positioning slots on the inside of the opening end and a Y-shaped structure on the back is installed on the large piece. The vertical female buckle body has shoulders on the left and right sides. The openings on the upper and lower sides of the positioning slots are limited by limit stops. An inner groove-shaped shoulder slide is provided between the bottom surface of the fixed frame and the limit stop. The shoulders on both sides of the vertical female buckle body press in the shoulder slide and can slide forward and backward. Forward sliding engages the vertical male buckle, and backward sliding provides space for the vertical male buckle during unfolding. Because the relative positions of the vertical female buckle and the vertical male buckle do not change after unfolding, but the operation of the buckle is not convenient, the vertical female buckle needs to be retracted. The vertical locking edge piece with positioning slots is fixed on the small piece, and the vertical male buckle is installed in the positioning slots of the vertical locking edge piece. The connection and fixation of the vertical locking edge piece with the soft box plate on the small piece and the connection and fixation of the fixed frame with the soft box plate on the large piece are also achieved by pressing the inner and outer edge parts of the soft box plate in the grooves on both sides of the Y-shaped structure with straight pressing plates and securing them with rivets. If the soft box plate on the small piece is not enough to connect the vertical locking edge piece, the vertical locking edge piece and the vertical U-shaped piece on the small piece are made as one piece. After the vertical flat climbing buckle is engaged, it becomes a complete box.

[0035] The upper and lower ends of the fixed frame are connected to the "Y"-shaped grooves of the upper and lower long horizontal U-shaped pieces of the vertical box plate through rivets. The small inclined surface of the "Y"-shaped groove at this point needs to be removed to maintain the smooth fit of the surface where the fixed frame engages with the "Y"-shaped groove. The back of the fixed frame is provided with a Y-shaped structure to facilitate the connection and fixation with the soft box plate.

[0036] When the vertical flat climbing buckles are opened, the vertical body of the box is broken, and the box plate can be unfolded. Because the double-hole connecting piece can rotate 180°, the long and wide box plates are folded in reverse around the vertical shaft, the inner surface of the box is turned to the outside, and the original outer surface is turned to the inside, so that the box is folded in a way that the outer surface is attached to the outer surface. This folding is also called reverse folding. The inner and outer surfaces of the box are changed, so that the shock-absorbing plate, the heat-insulating plate, the shock-absorbing cone plate and the heat-insulating cone plate originally installed on the inner surface of the box are now turned to the outside. Their greater thickness no longer affects the folding of the box; the box cover and the box bottom are each folded upward and downward around the horizontal shaft, and the outer surface is attached to the outer surface, and the inner surface faces outward.

[0037] Only a few pairs of vertical flat climbing buckles need to be added between the two disconnected box plates to easily connect and open the disconnected box plates. Relying on the upper and lower surfaces of the opening inside the fixed frame and the outer end surface of the sliding groove, which are three surfaces, and the upper and lower surfaces and the front end surface of the vertical locking edge, which are three surfaces, cooperate with each other to achieve the initial positioning of the male and female buckles of the vertical flat climbing buckles when they are buckled. Each vertical female buckle requires a sliding groove, and the box plate where the vertical female buckle is installed is also called the vertical female buckle plate. The vertical male buckle and the vertical locking edge are fixed on the small piece of box plate that has been disconnected, which is called the vertical male buckle loose-leaf plate, and is buckled or opened in a rotating manner.

[0038] The vertical female buckle body and the buckle pressing plate are connected by a buckle shaft to form a vertical female buckle, and the vertical male buckle is the same as the male buckle, and the vertical locking edge is the same as the locking edge. Only when it is matched with the vertical female buckle is it called vertical male buckle and vertical locking edge.

[0039] The vertical female buckle body is a female buckle body with left and right shoulders added and the tail U-shaped slot and rivet hole removed.

[0040] Install the gas nozzle in the fixed round hole of the elbow U-shaped piece, offset the Y-shaped structure in the U-shaped piece to the outer surface direction, so that the inside has a space larger than the thickness of the installed air bag after exhaust, and the four Y-shaped structures of the frame are offset at the same time to form a pit. Install the air bag group in this pit with rubber nails, install air bags in the inner pits of the four vertical box plates and the front and rear box covers and box bottoms, and connect all the air bags with air channels to form an air bag box that inflates the air bags when in use and deflates the air bags when not in use. The air bag box is inflated when in use and deflated when not in use.

[0041] The elbow U-shaped piece is the key structure of the box that can be folded. The wide box plate connected to the elbow U-shaped piece needs to be folded back to the inside of the box at this point, and the elbow provides a rotating fulcrum and a folding space for the rotation of the wide box plate. The height of the elbow is equal to a wall thickness, which is used for the rotating connection of the wide box plate and at the same time reserves a space for its folding.

[0042] The distance between the two outer planes of the two short vertical plates of the "Y" shape is equal to the thickness of the flat-top corrugated plate, that is, the two outer planes are supported on the inner sides of the inner and outer plates. This structure is to smoothly transition the edge portions of the inner and outer plates along the inclined body into the recesses to be pressed and riveted by the pressing plate. The "Y" shape in the frame mainly serves to connect the frame and the soft box plate, and is a bridge for the transition between the soft and hard. Thus, the three problems of compression resistance, shock absorption, and light weight can be designed separately. The compression resistance is mainly completed by the frame, and the specific part is the structural design of the U-shaped part. By changing the internal structure of the U-shaped part, the compression capacity and strength of the U-shaped part can be changed, for example, increasing the thickness of the "U" shaped flat mouth, widening, thickening, using different materials, and adding reinforcing ribs, etc. can increase the compression capacity. Shock absorption and light weight are achieved by the soft box plate. The three plates of the soft box plate are generally made of plastic, which has much higher toughness and strength than paper. By changing the size or arrangement density of the middle flat-top corrugated plate, the thickness of the plate, and the material, many different shock absorption effects can be achieved. Therefore, quantitative and qualitative design can be performed according to the specific technical requirements of the box. Thus, the design, production, and use of the box have a complete technical means to ensure the quality requirements of different compression and shock absorption of the box.

[0043] The shock-absorbing and heat-insulating conical plates are right rectangular conical plates, and the single-side inclined angle is 45°. A straight surface is reserved at the starting point of the 45° to avoid the inclined sharp angle which is easy to break. The reason for choosing the inclined angle of 45° is that when the two conical plates are spliced at 90°, the edge lines of the upper and lower planes of the two conical plates can be aligned with each other. Six conical plates with the same thickness can be spliced into a complete box, of which four are used as vertical box plates and are installed on the inner sides of the long and wide box plates. The other two are used as box covers and box bottoms, and each is divided into two halves along the length dimension, and are installed on the inner surfaces of the front and rear box covers and box bottoms, respectively, to facilitate opening and closing of the box covers and box bottoms. The shock-absorbing and heat-insulating conical plates are wrapped with sheet materials resistant to low temperature and scratching to prevent the shock-absorbing and heat-insulating materials from being scratched and to provide protection. Before wrapping, a plurality of disc-shaped nut parts are pre-installed at the positions where the shock-absorbing and heat-insulating conical plates need to be fixed by screws, and the screws are generally installed on the reinforcing support ribs.

[0044] To eliminate the gap between the surfaces of the abutting portions of the two heat-insulating conical plates, a resilient sealing strip can be inlaid in the recess for installing the sealing strip on the heat-insulating conical plate.

[0045] The cross-sectional shape of the flat-top corrugated board is a continuous arrangement of isosceles trapezoidal structures with a positive and a negative top, and the top of the isosceles trapezoid is a flat surface, which can increase the contact area with the inner and outer panels, thereby improving the bonding strength of the soft box board. After the positive and negative tops of the isosceles trapezoid are bonded, a structure similar to an isosceles triangle is formed, which makes the soft box board have good structural stability and strong compression resistance. Even after deformation under pressure, it can quickly return to its original state.

[0046] The so-called positive and negative refers to the short top edge of the isosceles trapezoid being positive on top and negative on bottom.

[0047] The "ten" shape upper small square through hole has a vertical left and right face locking shaft through hole in the middle, which is the place for installing the concentric cylinder at the tail of the locking and pressing plate. The length of the "ten" shape middle sliding groove is equal to the sum of the left and right sliding distances of the two lower locking hooks in the groove, and the width of the sliding groove should ensure that the two lower locking hooks can smoothly enter and exit the sliding groove. Therefore, the width of the sliding groove should be greater than the thickness of the locking head.

[0048] The mouth part refers to the position between the left and right box covers and the front and rear box covers, which is the place where the box covers can be opened and closed.

[0049] The sealing refers to the operation that cannot be opened by its own force after the box cover is closed, which refers to the locking of the male and female buckles.

[0050] The plates in the horizontal plate, flat plate, vertical plate, small flat plate, long vertical plate, short vertical plate, and back plate refer to cuboid components with a certain thickness and length, width dimensions, and six flat surfaces.

[0051] The box is also called an inverted folding box after being folded in reverse. This is to distinguish it from the folding of the box with the vertical box plate not being cut open. Because the shock-absorbing plate and the heat-insulating cone plate can be wrapped, materials with better environmental protection, better shock absorption, and better heat insulation can be used as the raw materials for the shock-absorbing plate and the heat-insulating cone plate.

[0052] The shock-absorbing plate refers to an inner lining plate made of a material that can absorb the vibration and impact of the contents in the box.

[0053] The heat-insulating plate refers to an inner lining plate made of a material with certain heat-insulating ability.

[0054] The shock-absorbing plate and the heat-insulating plate do not have special requirements for their appearance, as long as they meet the use requirements and can be installed in the box.

[0055] The oblique angle refers to the included angle between the inclined surface and the vertical surface.

[0056] The pressing plate is a general term for straight pressing plates, double-inclined pressing plates, long-hole pressing plates, and 90° pressing plates.

[0057] The equal-distance concave-convex alternating structure of the moon-shaped structure refers to the two U-shaped pieces of the nail and the B, each of which is made of a convex segment and a moon-shaped concave segment, the convex segment of the nail is embedded in the moon-shaped concave segment of the B, the moon-shaped concave segment of the nail is embedded in the convex segment of the B, and the size of the concave and convex segments embedded in each other is equal, so it is called equal distance, and the concave and convex segments are cyclically embedded, so it is called concave-convex alternating. The circular holes of the nail and the B after mutual matching should be concentric, and the nail and the B should be rotated within 0°-90° after wearing the shaft, and the bottom of the concave segment can only retain a single moon, and the other side has no moon. The moon is located at the bottom of the concave segment, which can limit the rotation of the convex segment to one side of the moon, and improve the sealing performance of the concave and convex segments. The key is that the moon-shaped structure avoids the straight gap between the long and wide vertical box plates. The moon of the concave segment of the nail and the B should be on the same side after matching, otherwise it cannot be rotated.

[0058] Here, equal distance refers to the size of the concave and convex segments embedded in each other, which does not require the size of the concave and convex segments on the paired U-shaped pieces to be equal, which can be equal or not equal.

[0059] The equal-distance concave-convex alternating structure is the same as the moon-shaped equal-distance concave-convex alternating structure except that it does not have a moon. Because the double-hole connecting piece in the double-hole elbow U-shaped piece needs to be rotated 180° around the vertical shaft, the concave segment in the connection between the double-hole connecting piece and the long vertical U-shaped piece of the long box plate cannot have a moon that affects rotation, so the equal-distance concave-convex alternating structure is adopted. The U-shaped piece connection between the box cover and the bottom and the long and wide box plates is the same as the case of the double-hole elbow U-shaped piece. The connection between the moving hole of the double-hole connecting piece and the wide vertical U-shaped piece of the wide box plate adopts the moon-shaped equal-distance concave-convex alternating structure.

[0060] The air bag can be elastically expanded or not, according to the protection level required by the goods in the box. The elastically expandable air bag can change its shape according to the shape of the goods to be protected, and can tightly wrap the goods. When a shock occurs, the air bag can automatically absorb the shock by elastic deformation, thereby ensuring that the goods are not damaged by the impact. The elastically expandable air bag tightly wraps the goods during operation, and there is no gap between the air bag and the goods. When the goods are subjected to a shock, the air bag automatically absorbs the shock wave by elastic deformation. Therefore, the elastically expandable air bag provides active protection for the goods and can provide high-level protection for the goods. In contrast, the non-elastically expandable air bag has little elasticity and mainly relies on compressed gas to absorb the shock. When the goods are subjected to a shock, the goods and the air bag have some gaps, and the goods must displace to compress the air bag to absorb the shock. Therefore, the non-elastically expandable air bag provides passive protection for the goods, and the protection level is relatively low.

[0061] The material for making the air bag is different according to the function of the air bag. The elastic inflatable air bag is made of thin film material with certain elasticity, while the non-elastic inflatable air bag is made of ordinary thin film material or thin film material with little elasticity. The so-called elastic inflatable air bag refers to the air bag which can change shape according to the size of the inflation pressure. When the air pressure is large, the air bag is also large. When the air pressure is small, the air bag is also small. The non-elastic inflatable air bag has less ability to change shape according to the size of the air pressure.

[0062] The air bag is generally made of two air-inflatable elastic materials or air-inflatable soft materials. The air bag and air duct are designed first, and then buckled together to form a shape along the periphery of the air bag and air duct by hot pressing or glue bonding. Then the excess part is cut off. The air bag is connected by the air duct. The air duct is the width of the air duct between the two air bags which is not bonded.

[0063] In addition, because the material cost of the elastic inflatable air bag is relatively high, and only one side of the air bag needs to be in contact with the goods, the air bag can be made of a non-elastic ordinary sheet and an elastic sheet bonded to form a single-sided inflatable air bag to reduce costs. The elastic inflatable air bag can adjust the elasticity of the air bag material according to the shock resistance requirements of the goods, to meet the protection needs of different goods.

[0064] For boxes that do not need to use air bags for shock absorption, shock-absorbing plates made of shock-absorbing materials can be used instead. If the recess of the box plate cannot accommodate the shock-absorbing plate, the structure of the reverse folding box can be used, and six shock-absorbing plates can be combined to form a box.

[0065] The straight pressing plate and the 90° pressing plate are plate-shaped connecting pieces with a bevel on one side of the flat plate and a rivet hole. The double-bevel pressing plate has bevels on both sides. The inclination of the above-mentioned bevel is the same as the inclination of the "Y" shape. The double-head Y-shaped piece is a flat plate with both ends being the upper half of the "Y" shape, similar to the tail of the lower end of the two "Y" shapes being opposite and spliced together.

[0066] The flat climbing buckle is a combination of male and female buckles. When working, the male and female buckles are buckled together to lock. The female buckle is composed of a female buckle body and a buckle pressing plate connected by a buckle shaft.

[0067] The male buckle body is the structure of the male buckle from the root of the clamping arm to the tail. It includes two narrow and long vertical through grooves, two small inclined surface platforms and a small notch, a U-shaped through groove and a rivet hole. The two ends of the rivet hole have large angle taper holes, which are similar to the inner chamfer of the two ends of a round hole, or the taper holes are replaced by large step holes, which are determined according to the shape of the rivet.

[0068] The positioning buckle tooth with complementary concave and convex shapes on the bevel refers to that, at the same position on the 45° bevels of two Y-shaped components to be matched, the concave shape corresponds to the same convex shape, and the convex shape corresponds to the same concave shape. The complementarity means that the concave shape and the convex shape on the two matched bevels can be embedded into each other.

[0069] The positioning buckle tooth not only plays a role in positioning and connecting, but also can bear the shear force generated on the bevel to keep the frame stable.

[0070] The Y-shaped component refers to a component with a "Y" shape constituting a box plate frame, i.e. a U-shaped component, an edge sealing component, a long groove U-shaped component, a square hole edge sealing component and a locking edge component. Here, a fixed frame with a "Y" shape is not included.

[0071] The air bag is divided into an elastically expandable air bag and a non-elastically expandable air bag due to different materials used for manufacturing.

[0072] The working sequence of the flat climbing buckle is as follows: first, hanging the buckle, when the male and female buckles are buckled, the buckle head enters the upper and lower buckle platforms and the sliding groove of the female buckle, at this time, the male and female buckles have been in the hooked state, but it is easy to cause unhooking due to accidents. Second, locking the buckle, pressing the buckle pressing plate and pushing the lock tongue into the lock hole until the buckle pressing plate enters the buckle. In this way, no matter how the male and female buckles are shaken, the oscillation force can be absorbed by the combination of the lock tongue and the lock hole, without affecting the buckling of the flat climbing buckle. If there is no lock tongue, lock hole and pressing platform, only the buckle pressing plate presses the buckle head, the buckle pressing plate is likely to be pulled out of the buckle due to the reverse prying action of the clamping arm of the male buckle caused by external shaking, which may cause the buckle pressing plate to be pulled out of the buckle, thereby causing the flat climbing buckle to fail and the box to be damaged. Since the box is often in unpredictable harsh environments, in order to ensure that the flat climbing buckle is always securely locked, the structure design of the additional lock tongue, lock hole and pressing platform is added.

[0073] The buckle pressing, unlocking and giving way refer to the following: the buckle pressing is to pull down the buckle pressing plate from the giving way state, push the lock tongue into the lock hole until the buckle tooth of the buckle pressing plate enters the buckle; the unlocking is to pry the buckle tooth from the small notch, pull up the buckle pressing plate, and the lock tongue exits the lock hole under the rebounding force of the clamping arm; the giving way is to place the front surface of the buckle pressing plate on the giving way inclined surface, which facilitates the buckling and unbuckling operation of the male and female buckles, and does not hinder the opening and closing of the box cover.

[0074] When opening the box, the buckle tooth of the U-shaped buckle on the buckle pressing plate is pried open with a tool, the buckle pressing plate is pulled up, the double inclined surface of the buckle pressing plate is separated from the inclined surface of the buckle head, the lock tongue automatically exits the lock hole under the rebounding force of the clamping arm, and the locked state is released.

[0075] The repeated design of upper and lower buckling tables, lock holes and pressing tables is to make full use of the limited space of the thickness of the box wall to provide as many effective structures as possible. Due to the influence of the wall thickness, if a single structure is used, it may lead to insufficient strength. Of course, the thickness of the flat climbing buckle can not be limited by the wall thickness, but in order to cover and fold flat, the thickness is generally equal to the wall thickness.

[0076] The buckling force of the flat climbing buckle mainly comes from the mutual hooking of the upper and lower buckling tables and the upper and lower buckling hooks, and the cooperation of the lock tongue, the lock hole and the pressing table and the clamping arm is mainly to limit the vibration or bounce of the buckle head and the clamping arm when subjected to uncertain external force, and to affect the stability of the buckling plate, so that the flat climbing buckle can maintain normal locking in any harsh environment.

[0077] The box is mainly made of engineering plastics, and some boxes with special requirements can also be made of metal materials or some parts made of metal materials. In particular, the box plate structure described in Patent No. ZL2020205183175 is most suitable for soft box plates.

[0078] The present application has the following beneficial effects:

[0079] The frame of the box plate can be made of high-strength and high-toughness materials, which can withstand a large weight and a large impact force, and is very suitable for large accumulation and rapid transportation. The soft box plate is not the main problem of bearing, which can be made of thin sheets, and is resistant to shock, light in weight, and good in toughness, and is not afraid of moisture. In this way, the bearing, shock absorption and light weight are considered separately, and the bearing can be designed quantitatively and qualitatively according to the product requirements. The performance of the engineering plastic used is stable, and the product can easily meet the design requirements, and is less affected by the environment. Unlike paperboard, there are too many uncontrollable factors. Rivets and pressing plates are connected, which is firm and reliable. When folding and unfolding, the box plate rotates around the shaft, which is easy and convenient, and the edges and corners are not easy to be damaged. The flat climbing buckle is used to seal the box, which is convenient, fast, safe and reliable. It eliminates the need for packing tape and sealing tape. The structure and material of the box ensure that the box is not easily damaged and fails, so it can be recycled. Because it can be folded, it is convenient for empty box storage and long-distance transportation. In particular, the heat preservation box and the air bag box can reduce the amount of white foamed polyester.

[0080] Another key point is that the box plates of the box of the present application are spliced, and can be mass-produced by injection molding, extrusion and other methods. Only cutting and splicing can produce boxes of various sizes. BRIEF DESCRIPTION OF DRAWINGS

[0081] Figure 1 is an isometric side structure schematic diagram of the box of Example 1 after sealing;

[0082] Figure 2is a structure diagram of the example 1 box folded in isometric view;

[0083] Figure 3 is a structure diagram of the example 1 right box plate 4 in isometric view;

[0084] Figure 4 is a structure diagram of the example 1 right box cover 3 in isometric view;

[0085] Figure 5 is a structure diagram of the example 1 right box plate 4 in frame isometric view;

[0086] Figure 6 is a structure diagram of the example 1 right box cover 3 in isometric view of the edge locking member 23;

[0087] is a structure diagram of the example 1 right box cover 3 in isometric view of the edge sealing member 22;

[0088] is a structure diagram of the example 2 fixed frame 34 in isometric view;

[0089] Figure 9 is a structure diagram of the example 2 in E-E cross-sectional view; Figure 36

[0090] Figure 10 is a structure diagram of the example 2 in F-F cross-sectional view; Figure 37

[0091] Figure 11 is a structure diagram of the example 1 flat U-shaped member in cross-sectional view;

[0092] Figure 12 is a structure diagram of the example 1 elbow U-shaped member 21 in cross-sectional view;

[0093] Figure 13 is a structure diagram of the example 1 edge sealing member 22 in cross-sectional view of Fig. 7;

[0094] Figure 14 is a structure diagram of the example 1 edge locking member 23 in cross-sectional view; Figure 6

[0095] Figure 15 is a structure diagram of the example 1 long horizontal U-shaped member 20 and the soft box plate 17 in the right box plate 4 in partial cross-sectional view;

[0096] Figure 16 is a structure diagram of the example 1 double-head Y-shaped member 59 and the double-inclined pressing plate 18 in cross-sectional view;

[0097] Figure 17 is a structure diagram of the example 2 front box plate 12 in cross-sectional view;

[0098] Figure 18 is a structure diagram of the example 2 double-hole coupling member 33 in cross-sectional view of the groove;

[0099] ​​​Figure 19 is a schematic diagram of the cross-sectional structure of the straight pin 64 of Example 1 when it is raised;

[0100] Figure 20 is a schematic diagram of the 90° position of the two U-shaped pieces of Example 1 after they are interchanged with the crescent moon;

[0101] Figure 21 is a schematic diagram of the 0° position of the two U-shaped pieces of Example 1 after they are interchanged with the crescent moon;

[0102] Figure 22 is a schematic diagram of the front view structure of the female buckle body 26 of Example 1;

[0103] Figure 23 is a schematic diagram of the front view structure of the male buckle 24 of Example 1;

[0104] Figure 24 is a schematic diagram of the isometric side structure of the female buckle body 26 of Example 1;

[0105] Figure 25 is a schematic diagram of the isometric side structure of the male buckle 24 of Example 1;

[0106] Figure 26 is a schematic diagram of the front view structure of the buckle pressing plate 27 of Example 1;

[0107] Figure 27 is a schematic diagram of the isometric side structure of the buckle pressing plate 27 of Example 1;

[0108] Figure 28 is a schematic diagram of the front view structure of the flat climbing buckle of Example 1;

[0109] Figure 29 is a schematic diagram of the top view structure of the flat climbing buckle of Example 1;

[0110] Figure 30 is a schematic diagram of the isometric side structure of the flat climbing buckle of Example 1.

[0111] Figure 31 is a schematic diagram of the front view structure of the vertical female buckle body 35 of Example 2;

[0112] Figure 32 is a schematic diagram of the isometric side structure of the vertical female buckle body 35 of Example 2;

[0113] Figure 33 is a schematic diagram of the isometric side structure of the heat preservation box when the upper cover is opened of Example 2;

[0114] Figure 34 is a schematic diagram of the isometric side structure of the heat preservation box when the vertical flat climbing buckle is unfolded of Example 2;

[0115] Figure 35 is a schematic diagram of the isometric side structure of the heat preservation box when the vertical flat climbing buckle is opened of Example 2;

[0116] Figure 36is an isometric view of the double-hole elbow U-shaped piece 56 of Example 2 when unfolded from the thermal box;

[0117] Figure 37 is an isometric view of the double-hole elbow U-shaped piece 56 of Example 2 when folded from the thermal box;

[0118] Figure 38 is an isometric view of the vertical female buckle of the vertical female buckle box plate 42 of Example 2 when the slide groove is retracted;

[0119] Figure 39 is an isometric view of the vertical male buckle loose-leaf plate 32 of Example 2;

[0120] Figure 40 is an isometric view of the thermal box folded from the thermal box of Example 2.

[0121] Figure 41 is an isometric view of the air bag box of Example 3 after the box is closed;

[0122] Figure 42 is an isometric view of the air bag box of Example 3 when the upper cover is opened;

[0123] Figure 43 is an isometric view of the air bag assembly and valve of Example 3;

[0124] Figure 44 is an isometric view of the air bag assembly and valve of Example 3;

[0125] Figure 45 is a partial cross-sectional view of the long horizontal U-shaped piece 20 of the left box plate 13 and the soft box plate 17 of Example 3.

[0126] Figure 46 is a front view of the retractable front box cover of Example 4 when pulled open;

[0127] Figure 47 is a front view of the retractable front box cover of Example 4 when retracted;

[0128] Figure 48 is a partial cross-sectional view of the flat climbing buckle-free front box cover and the left box cover of Example 4;

[0129] Figure 49 is a front view of the square hole edge sealing piece 61 of Example 4;

[0130] Figure 50 is an isometric view of the T-shaped bar 60 inserted into the square hole edge sealing piece 61 of Example 4;

[0131] Figure 51 is a cross-sectional view of the straight buckle tooth 64 when flattened of Example 4;

[0132] Figure 52 is an isometric view of the straight buckle tooth 64 when flattened of Example 4;

[0133] Figure 53 is an isometric view of the straight tine 64 of Example 4;

[0134] Figure 54 is a top view of the long slot U-shaped piece 65 of Example 4;

[0135] Figure 55 is a front view of the straight tine 64 of Example 4;

[0136] Figure 56 is an isometric view of the straight tine 64 of Example 4;

[0137] Figure 57 is a front view of the self-balancing female body 67 of Example 4;

[0138] Figure 58 is a front view of the self-balancing male 68 of Example 4;

[0139] Figure 59 is an isometric view of the self-balancing female body 67 of Example 4;

[0140] Figure 60 is an isometric view of the self-balancing male 68 of Example 4;

[0141] Figure 61 is a front view of the self-balancing flat-climbing buckle of Example 4;

[0142] Figure 62 is a top view of the self-balancing flat-climbing buckle of Example 4;

[0143] Figure 63 is an isometric view of the self-balancing flat-climbing buckle of Example 4.

[0144] Figure 64 is a cross-sectional view of the fixed frame 34 of Example 2 along A-A;

[0145] In the figure: 1 - rear box plate; 2 - left box cover; 3 - right box cover; 4 - right box plate; 5 - front box cover; 6 - rear box cover; 7 - right box bottom; 8 - front box bottom; 9 - rear box bottom; 10 - left box bottom; 11 - shaft; 12 - front box plate; 13 - left box plate; 14 - 90° pressing plate; 15 - long vertical U-shaped piece; 16 - straight pressing plate; 17 - soft box plate; 18 - double inclined pressing plate; 19 - rivet; 20 - long horizontal U-shaped piece; 21 - elbow U-shaped piece; 22 - edge sealing piece; 23 - lock edge piece; 24 - male buckle; 25 - long cover U-shaped piece; 26 - female buckle body; 27 - buckle pressing plate; 28 - buckle shaft; 29 - outer panel; 30 - flat top corrugated plate; 31 - inner panel; 32 - vertical male buckle loose-leaf plate; 33 - double-hole coupling piece; 34 - fixed frame; 35 - vertical female buckle body; 36 - vertical male buckle; 37 - vertical lock edge piece; 38 - heat preservation cone plate; 39 - disc-shaped nut; 40 - wrapping piece; 41 - screw; 42 - vertical female buckle box plate; 43 - vertical U-shaped piece; 44 - air valve; 45 - air bag assembly; 46 - left box plate air bag assembly; 47 - front box plate air bag assembly; 48 - front box cover air bag assembly; 49 - front box bottom air bag assembly; 50 - right box plate air bag assembly; 51 - rear box cover air bag assembly; 52 - rear box plate air bag assembly; 53 - rear box bottom air bag assembly; 54 - air bag upper half piece; 55 - air bag lower half piece; 56 - double-hole elbow U-shaped piece; 57 - elastic sealing belt; 58 - loose-leaf plate U-shaped piece; 59 - double-head Y-shaped piece; 60 - T-shaped strip; 61 - square hole edge sealing piece; 62 - long hole Y-shaped piece; 63 - long hole pressing plate; 64 - straight buckle tooth; 65 - long slot U-shaped piece; 66 - no-bevel lock edge piece; 67 - self-balancing female buckle body; 68 - self-balancing male buckle.

[0146] Example 1 Figure 24 In the figure: G - upper buckle platform; H - inclined surface for giving way; I - lock hole; J - lower buckle platform; M - locking surface; N - sliding stop surface; S - pressing platform.

[0147] Example 1 Figure 25 In the figure: A - inclined surface for being pushed; B - lock tongue; C - lower buckle hook; D - small notch; E - upper buckle hook; F - small inclined surface platform; P - large step surface; W - locking platform; Z - sliding stop platform.

[0148] Example 1 Figure 27 In the figure: K - main pushing inclined surface; L - buckle tooth.

[0149] Example 2 Fig. 38, Fig. 39, Fig. 8, Figure 64 In the figure: AA - upper and lower inner side surfaces of the fixed frame; BB - vertical inner side surface; CC - upper and lower outer side surfaces of the vertical male buckle loose-leaf plate; DD - front end surface; EE - support piece; FF - back surface; GG - limiting platform; HH - positioning sliding groove; II - open end vertical side surface; KK - groove bottom surface.

[0150] Example 3 Figure 44 In the figure: Q - air passage. DETAILED DESCRIPTION

[0151] Example 1

[0152] In order to save space and facilitate use, storage and transportation, the design is full connection and full folding, and there is no detachable part during folding.

[0153] This example mainly introduces the box composed of soft box plate, U-shaped piece, shaft and flat climbing buckle and the main structure of each part.

[0154] Figure 1 This is the isometric side structure diagram of the box after sealing. The left box plate 13, the right box plate 4, the front box plate 12 and the rear box plate 1, a total of four vertical box plates, form the main structure of the length, width and height of the box. The shaft 11 represents the horizontal shaft, vertical shaft and rotating shaft. The left box cover 2 and the right box cover 3 are at the top layer of the box, and the front box cover 5 and the rear box cover 6 are below the top layer. The left box bottom 10 and the right box bottom 7 are at the bottom layer of the box, and the front box bottom 8 and the rear box bottom 9 are above the bottom layer. The width of the left and right box cover box bottom is equal to 1 / 2 of the width of the box plus the size of the locking part exceeding the center line of the box width, and the length is equal to the length of the box. The length of the front and rear box cover box bottom is equal to 1 / 2 of the length of the box plus the size of the locking part exceeding the center line of the box length, and the width is equal to the width of the box minus two wall thicknesses. The reason why the locking part exceeds the center line part size is that the opening of the box cover box bottom is sealed by the flat climbing buckle, and the locking parts on both sides of the box mouth overlap each other.

[0155] Since this example does not use packing tape and sealing tape, for the box that needs to prevent the box from being exposed at the wide box plate, the flat climbing buckles are also installed on the front and rear box cover box bottoms, so that the wide box plate will not bulge and leak out under the locking force of the flat climbing buckles.

[0156] In addition to ensuring that the wide box plate does not leak out, the front and rear box cover box bottoms also need to ensure that the unfolded box is square and stable. Since the width of the front and rear box cover box bottoms is equal to the clear width of the inside of the box and is located inside the left and right box cover box bottoms, it can resist the inside of the upper and lower ends of the left and right box plates, so that it cannot shift inwardly, and the tendency to shift outwardly is controlled by the flat climbing buckles in the left and right box cover box bottoms. Although the four corners of the box are connected by rotating shafts and cannot guarantee that the unfolded box is square, the resistance of the width of the front and rear box cover box bottoms and the tension of the flat climbing buckles in the left and right box cover box bottoms ensure that the box is square and stable.

[0157] Figure 2is the structure diagram of the product folded, the folding method is the same as the ordinary carton, unfolding all the flat climbing buckles, the left box cover 2, the right box cover 3, the front box cover 5 and the rear box cover 6 are folded by turning up 90°, the left box bottom 10, the right box bottom 7, the front box bottom 8 and the rear box bottom 9 are folded by turning down 90°. Then push and press the long box plate and the wide box plate to move to the inside of the box until the inside of the box is completely attached. The front box plate 12 and the left box plate 13 are pulled flat and unfolded, the rear box plate 1 and the right box plate 4 are pulled flat and unfolded. The front box plate 12 is located at the inside of the elbow U-shaped piece 21 of the right box plate 4, the rear box plate 1 is located at the inside of the elbow U-shaped piece 21 of the left box plate 13, all the parts of the box are folded into one, which is convenient for storage and transportation.

[0158] Figure 3 is the structure diagram of the right box plate 4, the most prominent feature is the structure of the elbow U-shaped piece 21, which is the key to the successful folding of the box. Figure 12 is the cross-sectional view of the elbow U-shaped piece 21, which is formed by the double-hole connecting piece 33 and the vertical U-shaped piece 43 when they are perpendicular to each other, and the back plate is removed. The fixed hole does not need to be threaded, in order to make the wall thickness uniform, the fixed round hole is changed to a square hole, and the original dynamic round hole remains unchanged. At this time, the center of the "U" shaped round hole is equal to half the size of the wall thickness of the inside of the box. That is, the distance from the vertex of the outer circle of the U-shaped part to the inside is equal to the size of the wall thickness of the box. To ensure that the matched front box plate 12 can be turned 90° inward and parallel to the right box plate 4 and attached, that is, folded on the inside of the elbow U-shaped piece 21.

[0159] Figure 5 is the frame structure diagram of the right box plate 4, the right box plate 4 is made in three steps: first, make a right rectangular frame, the length and height of the right box plate 4 are equal to the length and height of the box. Each U-shaped piece is pre-fabricated with a 45° bevel at both ends and a positioning buckle on the bevel. The positioning buckle is a convex-concave structure on the bevel. Figure 6 , as shown in FIG. 7, the positioning buckles are distributed on the 45° bevels at both ends of the Y-shaped piece. One elbow U-shaped piece 21 and one long vertical U-shaped piece 15 are located at the two sides of the length direction, and two long horizontal U-shaped pieces 20 are located at the upper and lower ends of the height direction, forming a right rectangular frame structure with the horizontal and vertical U-shaped pieces perpendicular to each other. The positioning buckles at the four corner joints are embedded in each other, so that the frame is accurately positioned and initially connected. The inside edge of the 90° pressing plate 14 has a bevel, which is used to connect the two Y-shaped pieces at the 45° bevel joint. Each joint needs one inside and one outside, and they are used in pairs. Four corners of a frame require a total of eight 90° pressing plates 14. Second, install the soft box plate 17, and the four edges of the soft box plate 17 also need to be pre-fabricated with holes for rivets. Third, use 90° pressing plate 14 and straight pressing plate 16 to press the four edges of the inside and outside panels of the soft box plate 17 into the grooves on both sides of the Y-shaped piece, and then use rivets 19 to fix them after pressing both sides tightly.

[0160] As Figure 3 shown, if the frame strength is insufficient, double inclined plates 18, double-headed Y-shaped parts 59 can be added, double inclined plates 18 are provided on both sides, one inside and one outside, and are fixed tightly by rivets 19. As Figure 16 shown, double-headed Y-shaped parts 59 are located in the middle, and the Y-shaped structure at both ends supports the inner panel 31 and the outer panel 29 of the soft tank plate 17. Double inclined plates 18 are two pieces that press on the inner and outer surfaces of the soft tank plate 17 and are fixed by rivets 19.

[0161] For frames with a greater height, double-headed Y-shaped parts 59 and double inclined plates 18 can also be added in the horizontal direction. The number of additions is determined according to actual needs. If the frame strength is sufficient to meet the technical requirements of the tank, the double inclined plates 18 and double-headed Y-shaped parts 59 can be removed.

[0162] Figure 15 is a partial cross-sectional view of the right tank plate 4 showing the long horizontal U-shaped part 20 and the soft tank plate 17. It clearly shows the partial structure of the long horizontal U-shaped part 20, the straight pressing plate 16, the rivet 19, and the inner panel 31, the outer panel 29, and the flat-top corrugated plate 30 of the soft tank plate 17, as well as their assembly relationship. First, the long horizontal U-shaped part 20 is composed of two parts. One is the U-shaped hole part, considering the shrinkage of plastic materials, two rectangular slots are opened between the inner hole and the flat mouth part to make the wall thickness as uniform as possible. The other is the Y-shaped double-sided groove part, which is located in the middle position of the U-shaped part and the soft tank plate 17. The lower half of the "Y" part is a thin vertical plate with a rivet hole, which serves as a support and transition. The upper half of the "Y" part is a double-beveled body and two outer sides of the two short vertical plates, which serve as a support and transition. The distance between the two planes supports the inner side of the inner panel 31 and the outer panel 29 of the soft tank plate 17, and is equal to the height of the flat-top corrugated plate 30. The bevels ensure that the edge parts of the inner and outer panels of the soft tank plate 17 transition to the thin vertical plate in the groove along the bevels. The straight pressing plate 16 is used in pairs, one inside and one outside, and is provided with a bevel on the side close to the soft tank plate 17, which has the same angle as the Y-shaped double bevel. Similarly, the surface of the 90° pressing plate 14 in contact with the soft tank plate 17 is also provided with a bevel.

[0163] The soft tank plate 17 is composed of the outer panel 29, the flat-top corrugated plate 30, and the inner panel 31. It is usually made of plastic, which has the characteristics of light weight, strong shock resistance, high toughness, and moisture resistance. The flat-top corrugated plate 30 is shaped like an isosceles trapezoid, with one positive and one negative continuous arrangement. The top of the isosceles trapezoid is a flat surface, which can increase the contact area with the inner and outer panels, thereby improving the bonding strength.

[0164] Figure 11This is a cross-sectional diagram of a flat U-shaped piece. A concentric inner circular hole is added to the sealed arc portion of the U-shaped opening. Because deformation and wall thickness uniformity are not considered, the inner hole is a complete circular hole. The sealed end is called the flat end. A "Y" shape has inclined planes extending symmetrically upward and diagonally to the left and right sides at the top of the vertical plate. Each inclined plane is topped with a short vertical plate parallel to the vertical plate. The bottom end of the "Y" is perpendicular to the flat end of the "U."

[0165] The Y-shaped structure and size of the elbow U-shaped piece 21 , the long vertical U-shaped piece 15 , the edge sealing piece 22 , the edge locking piece 23 , and the long cover U-shaped piece 25 are basically the same as those of the long horizontal U-shaped piece 20 .

[0166] The front and rear box panels 12 and 1 have two wide vertical U-shaped members symmetrically arranged on either side of the box's width, and two wide horizontal U-shaped members symmetrically positioned at the upper and lower ends of the box's height. The remaining structure is identical to that of the right box panel 4. The width of the wide box panel should be calculated by subtracting one wall thickness from the total width of the box. This is because one end of the wide box panel connects to the elbow U-shaped member 21 of the left and right box panels 13 and 4, which accounts for one wall thickness. The front and rear box lids and bottoms, which connect to the front and rear box panels, are located on the inner sides of the left and right lids and bottoms, respectively. The height of the wide box panel is equal to the total height of the box minus two wall thicknesses.

[0167] Figure 4 This is a schematic diagram of the isometric structure of the right lid 3. There are two edge banding pieces 22, located at both ends of the right lid 3 in the length direction and arranged symmetrically. There is one locking piece 23 and one long lid U-shaped piece 25, which are relatively distributed at both ends of the right lid 3 in the width direction, forming a rectangular frame. According to the assembly relationship of the box, the right lid 3 and the right box board 4 are matched at the horizontal axis. The long horizontal U-shaped piece 20 and the long lid U-shaped piece 25 adopt an equidistant concave and convex structure to match each other. The circular holes of the two U-shaped pieces are matched to form concentric circular holes, which can be connected in series by the shaft 11. The crescent of the concave section is eliminated here so that the opening angle of the lid is greater than 180°, which is convenient for taking and putting items. The installation and fixing method of the soft box board 17 is the same as that of the right box board 4.

[0168] like Figure 6 As shown, the locking piece 23 is provided with two positioning slots for mounting the pin 24. The positioning slots have the same width as the pin 24, and the rivet holes in the Y-shaped slots mate with the rivet holes at the end of the pin 24. The U-shaped slots at the end of the pin 24 are secured to the Y-shaped plate of the locking piece 23 with rivets 19. The structural dimensions of the locking piece 23 adjacent to the pin 24 should be equal to or larger than the corresponding dimensions of the pin 24 to provide protection from bumps and scratches.

[0169] like Figure 1As shown, the structure of the left box cover 2 is basically the same as that of the right box cover 3, except that the female buckle is installed on the locking member of the left box cover 2. The left box bottom 10 and the right box bottom 7 are installed at the lower end of the left and right box plates, and their structure and installation are the same as those of the left and right box covers. The structure of the front box cover 5, the rear box cover 6, the front box bottom 8 and the rear box bottom 9 is basically the same as that of the left and right box covers and box bottoms.

[0170] Figure 6 is a schematic view of the structure of the locking member 23 of the right box cover 3, Figure 14 is a schematic view of the cross-sectional structure of the locking member 23. The main structure is Y-shaped and perpendicular to a flat plate member. One end of the flat plate member has a long vertical plate member extending downward. The lower end and the middle part of the long vertical plate member have two small flat plates in the same direction as the flat plate member. The long vertical plate member is prevented from deforming due to thinness, and serves as a reinforcing rib. After the box is sealed, the long vertical plate member and the flat plate member support each other, and prevent dust and sundries from entering. The two ends of the locking member 23 have a concave-convex positioning buckle tooth at the 45° bevel of the Y-shaped structure. The two notches on the long vertical plate member are two positioning clamping grooves, which are the positions of the male buckle 24. The rivet hole on the Y-shaped thin plate at the bottom of the clamping groove is used to fix the male buckle.

[0171] Fig. 7 is a schematic view of the structure of the sealing member 22 of the right box cover 3, Figure 13 is a schematic view of the cross-sectional structure of the sealing member 22. The cross-sectional structure is Y-shaped and perpendicular to a flat plate member. The two ends of the sealing member 22 have a concave-convex positioning buckle tooth at the 45° bevel of the Y-shaped structure. The shape, position and size of the positioning buckle tooth are the same as those of the positioning buckle tooth of the locking member 23, but the concave-convex positions are interchanged, that is, the concave-convex shapes of the two members are complementary. The small round holes arranged in the Y-shaped groove are rivet holes for fixing the rivets of the soft box plate and the pressing plate.

[0172] Figure 28 is a schematic view of the front view structure of the flat climbing buckle, and the appearance of the flat climbing buckle when it is opened. The buckle pressing plate 27 leans against the clearance inclined surface. Figure 29 is a schematic view of the top view structure of the flat climbing buckle, Figure 30 is a schematic view of the isometric structure of the flat climbing buckle, which is composed of four parts, namely the male buckle 24, the female buckle body 26, the buckle pressing plate 27 and the buckle shaft 28. The buckle shaft 28 connects the female buckle body 26 and the buckle pressing plate 27 to form a female buckle. The male buckle 24 and the female buckle are collectively referred to as the flat climbing buckle, which is the key component of the box in this example. The structure is slightly complex, but the operation is simple, convenient and fast, and it is firm and reliable. Therefore, it will be described in detail below.

[0173] The hole-end of the buckle pressing plate 27 is installed in the middle square through hole of the female buckle body 26, and is connected by the buckle shaft 28. The buckle pressing plate 27 can swing within a certain angle range around the buckle shaft 28, so as to realize the actions of pressing the buckle, releasing the buckle and giving way.

[0174] Figure 22 is a schematic view of the front view structure of the female buckle body 26,Figure 24 is the isometric view of the female body 26, the female body 26 is symmetrically distributed along the center line between the left and right faces. Three parts, the front end is from the bottom of the front platform with a gap for the male buckle 24 of a pair of card arm to provide a support plane. The front platform gap for the female buckle 27 of the U-shaped buckle of the bottom part of the design, the length of the front platform, to ensure the appropriate distance between the male and female buckle. The structure of the middle part is more, mainly around the center of the "ten" shape around the hole. In the "ten" shape of the top of the let go of the inclined surface H, when the flat climb buckle open, the front of the buckle 27 can be on the let go of the inclined surface H, to avoid the normal opening or buckle into the card jaw of the male buckle 24. "Ten" shape of the upper small square hole in the middle of the hole is perpendicular to the left and right side of the circular hole, and the hole and the buckle shaft 28 of the tail of the buckle plate 27 are the same diameter. The long groove of the "ten" shape is the sliding groove, the two lower hook C of the two hooks on the card arm can slide left and right in the sliding groove. The length of the sliding groove, that is, the distance between the two sliding stop surfaces N of the sliding groove, is not less than the distance between the two sliding stop surfaces Z of the two lower hooks C after buckling. The long vertical surface of the sliding groove close to the front end is the lower buckle table J, which is in close contact with the lower hook C of the male buckle 24 during buckling. The two symmetrical rectangular columns that rise from the surface of the lower buckle table J are the upper buckle table G, one on the left and one on the right. The left and right upper buckle tables G should leave a maximum distance for the swing of the two card arms, that is, the size of the contact between the outer side of the two card arms and the left and right upper buckle tables G after buckling. The pressure table S has two, left and right symmetry, located in the upper part of the left and right upper buckle tables G towards the center position. The two through holes on the platform surface on the left and right sides of the sliding groove, which are the lock holes I, are located on the left and right sides, with the lock surface M as the starting surface. The hole wall of the lock hole I is closed. The right upper buckle table G extends to the right side of the female buckle body 26, forming a part of the hole wall of the right lock hole I; the left upper buckle table G extends to the left side of the female buckle body 26, forming a part of the hole wall of the left lock hole I. The plane between the lock surface M and the sliding surface N is the extension of the bottom plane of the left and right lock holes I, and the large step surface P of the lock tongue B can slide back and forth on this plane. The surface connecting the lower buckle table J and the left and right upper buckle tables G is the buckling surface of the female buckle body. In the middle of the lower buckle table J, that is, the lower half of the "ten" shape, there is a short groove, which is used for the double inclined surface boss of the buckle plate 27 to let go when swinging. A U-shaped groove is opened in the middle of the tail of the female buckle body 26, and the upper and lower groove bodies are similar in structure to the straight buckle plate 16. The upper and lower surfaces of the groove body are chamfered for rivet installation.

[0175] Figure 23 is the front view of the male buckle 24, as can be seen from the figure, the card arm is first a horizontal part length, which is bent 90° to the center direction, perpendicular to a size, and then bent 90° to the front, extending a horizontal size, that is, the curved card arm formed by two 90° straight bends. The inner and outer right angles at the bend are smoothly transitioned by a circular arc.

[0176] Figure 25 is the schematic diagram of the equatorial structure of the male buckle 24, which is symmetrically distributed along the center line between the left and right faces, and is divided into three parts: front, middle and back. The front end is two identical and symmetrically distributed buckle heads. The two locking tongues B on the buckle heads are respectively directed to the left and right, and have the same shape as the lock hole I and should be able to enter the lock hole I and slide easily. The step between the locking tongue B and the top surface of the buckle head is the locking platform W, which is used to control the length of the locking tongue B entering the lock hole I. When the locking platform W is in contact with the locking surface M, the locking tongue B stops moving. The left and right opposite inclined surfaces of the two buckle heads are the pushed inclined surfaces A, which cooperate with the main pushed inclined surface K on the buckle pressing plate 27. The inclined angle between the inclined surface and the vertical line perpendicular to the bottom surface should be less than 12°, so that a larger pushing force can be ensured and self-locking can be achieved, that is, the buckle pressing plate 27 will not be pushed up by the counterforce generated by the elasticity of the clamping arm due to the buckle head. The bottom edge line of the pushed inclined surface A intersects with the bottom surface of the lower buckle hook C, and the bottom surface of the locking tongue B is the large step surface P. There is a step between the large step surface P and the bottom surface of the lower buckle hook C, which is called the sliding stop platform Z. The height of the sliding stop platform Z is equal to the depth of the sliding groove of the female buckle body 26. The large step surface P can slide on the bottom surface of the lock hole I of the female buckle body 26. The top surface of the buckle head is flush with the front surface of the male buckle 24. The left and right outermost surfaces of the locking tongue B should have a distance greater than zero from the locking surface M of the female buckle body 26 when the male buckle 24 is not buckled, so that the clamping claw of the male buckle 24 can be smoothly buckled and unbuckled. The upper buckle hook E refers to the part of the buckle head extending to the left and right outside the left and right clamping arms, and also includes the locking tongue B. The surface connecting the buckle head and the clamping arm is the hooking surface of the male buckle 24. When buckled, the hooking surface of the male buckle should be in contact with the buckling surface of the female buckle body. The left and right clamping arms in the middle of the male buckle 24 can be straight or curved, depending on the specific structure. In this example, they are curved. The curvature is to provide sufficient length and width space for the U-shaped buckle of the buckle pressing plate 27. There is a narrow and long vertical through groove on the inner side of the root of each clamping arm, which communicates with the upper and lower surfaces of the male buckle 24. It is used to increase the length of the clamping arm root to reduce the swinging angle of the clamping arm when the buckle head moves, so as to avoid plastic deformation that may be caused by excessive swinging angle due to the shortness of the clamping arm. The center line of the small notch D coincides with the center line of the male buckle 24, and small inclined surfaces are distributed on both sides of the small notch D. The small inclined surfaces are used to reduce the resistance when the buckle teeth L are buckled. After buckling, the lower surface of the small inclined surface platform F is in contact with the front surface of the buckle teeth L. When the flat climbing buckle needs to be opened, a small flat lifter is inserted into the small notch D to pry the buckle teeth L to separate them from the small inclined surface platform F, and then the buckle pressing plate 27 is pulled. With the gradual separation between the main pushed inclined surface and the pushed inclined surface, the two buckle heads also gradually exit the lock hole I under the elastic force of the clamping arm, so that the flat climbing buckle can be unlocked. The tail structure of the male buckle 24 is the same as that of the female buckle body 26.

[0177] Figure 26 is the main view structure diagram of the buckle pressing plate 27, Figure 27The isometric side view of the buckle plate 27 is symmetrically distributed along the center line between the left and right sides, and is divided into three sections: front, middle, and tail. The long gap in the front end has a U-shaped buckle with buckle teeth L. The U-shaped buckle is composed of a fixed hook and a movable hook. The fixed hook is integrated with the back of the faceplate of the buckle plate 27, and the outer side of the movable hook has buckle teeth L. The cross section of the buckle teeth L is similar to a right triangle, and there is a "V"-shaped through slot on the inner side of the straight top edge. The spacing between the left and right ends of the U-shaped buckle and the long gap is to allow the U-shaped buckle to be independent, making it easier for the movable hook to swing under external force. The micro convex vertical platform in the middle gap of the buckle teeth L is designed to cooperate with the middle small gap of the male buckle body, making it easier to pry the buckle teeth L with a tool. The buckle plate is also the body of the buckle plate 27, which is responsible for connecting the front, middle, and tail sections. The faceplate has a large area to block the clamping arms of the male buckle after buckling. The middle part is mainly composed of two symmetric main push inclined surfaces K, which form a double inclined surface boss. The tail part is mainly a concentric circular ring structure, and the circular hole can pass through the buckle shaft 28.

[0178] Figure 20 is a 90° position diagram of two U-shaped pieces after mutual matching of the crescent moon, Figure 21 is a 0° position diagram of two U-shaped pieces after mutual matching of the crescent moon. One side of the concave section of the U-shaped piece is integrated with the bottom of the concave section, which can limit the rotation of the convex section matched therewith to one side, that is, limit the rotation of the U-shaped piece matched therewith to one side. The two U-shaped pieces are allowed to rotate relative to each other within the range of 0°-90°, because the folding and unfolding of the box only requires the relative rotation of 0°-90° of the two adjacent long and wide box plates. The crescent moon is a detailed structure of the U-shaped piece, and for the convenience of drawing, the structure of the crescent moon is not shown in the assembly diagrams of the remaining drawings. The function of the crescent moon is to limit the one-sided rotation of the U-shaped piece, to avoid the inside and outside bilateral swing of the two long and wide box plates at the connection; and to eliminate the straight-through inside and outside gap at the bottom of the matching U-shaped piece groove, to improve the sealing of the box.

[0179] The flat climbing buckle is more convenient and faster to use than screwing, and saves space compared with ordinary buckles. It is an ideal locking device for closing the box opening of the box and the like thin-walled box plate.

[0180] Example 2:

[0181] This example mainly introduces the structure of the heat preservation box, which adds a heat preservation plate and a vertical flat climbing buckle to the box of example 1, and uses a double-hole connecting piece to realize the structure of the reverse folding and unfolding of the box.

[0182] Figure 33 is an isometric side view of the product when the upper box cover is opened, Figure 40 is an isometric side view of the product after reverse folding and unfolding.

[0183] In Figure 33In the figure, the bottom of the box is in a closed state, and the cover is in an open state. The vertical flat climbing buckle is in a buckled state. The left box plate 13, the rear box plate 1, the right box plate 4, and the front box plate 12 form the main structure of the length, width, and height of the heat preservation box. The inner surface of each box plate is fixed with a heat preservation cone plate 38 by a screw. The four edges of the heat preservation cone plate 38 are provided with 45° bevels. The front box cover 5 and the rear box cover 6, and the rear box bottom 9 and the front box bottom 8 are each provided with a 1 / 2 long heat preservation cone plate, which forms an integral heat preservation cone plate after being closed. The left box cover 2 and the right box cover 3, and the left box bottom 10 and the right box bottom 7 are located on the outer surfaces of the front and rear box covers and bottoms after the box is closed.

[0184] In Figure 34 , in order to clearly reflect the position of the vertical public buckle loose-leaf plate 32 after being unfolded, the left box plate 13 shielding the rear box plate 1 and the box cover and bottom not necessary to be reflected here are removed. The double-hole connecting piece 33 in the double-hole elbow U-shaped piece 56 is rotated by 180° from the position in Figure 34 to the position in the present figure. At this time, the back plate on the double-hole connecting piece 33 is changed from the position facing the inside of the box in Figure 35 to the position facing the outside. In order to clearly reflect the position of the double-hole connecting piece 33 after being folded, the double-hole connecting piece 33 connecting the rear box plate 1 and the left box plate 13 is retained in the figure. The outer surfaces of the right box plate 4 and the front box plate 12 are attached, and the heat preservation cone plate 38 faces the outside. As can be seen from the figure, the rear box plate 1 is composed of the vertical female buckle box plate 42 and the vertical public buckle loose-leaf plate 32. The position of the vertical public buckle 36 is the same as that in Figure 33 , except that the vertical female buckle body 35 retreats a distance to make a position for the vertical public buckle 36. Because the box plate is unfolded at this time, the front surface of the vertical flat climbing buckle is attached to the outer surface of the left box plate 13, which is not convenient for buckling of the vertical flat climbing buckle.

[0185] Figure 35 The figure reflects the state when the vertical flat climbing buckle is just unbuckled and the vertical female buckle has retreated in the sliding groove. The vertical public buckle loose-leaf plate 32 rotates around the vertical shaft to separate the rear box plate 1 into the vertical female buckle box plate 42 and the vertical public buckle loose-leaf plate 32, so that the box can be broken along the vertical direction of the rear box plate 1. Because the box cover and the bottom are irrelevant to the opening and closing of the vertical flat climbing buckle, they are not shown in the figure.

[0186] The connection between the left box plate 13 and the vertical female buckle box plate 42 and the right box plate 4 and the front box plate 12 is the double-hole elbow U-shaped piece 56. The double-hole connecting piece 33 can rotate around the vertical U-shaped piece 43 vertical shaft in the range of 0°-180°. In order to clearly show the positions of the two double-head elbow U-shaped pieces 56 in the figure, they are all marked with the same part number 56.

[0187] As Figure 36Figure 2 shows the positional relationship between the double-hole connector 33 and the vertical U-shaped member 43 when the insulated box is unfolded. At this point, the crescent and back panel are located on one side of the Y-shape. Because of the obstruction between the crescent and the reinforcement plate, the wide panel cannot continue to rotate inward and can only maintain a perpendicular position relative to the long panel.

[0188] Figure 9 yes Figure 36 The EE cross-sectional diagram clearly reflects the connection and position relationship between the double-hole connecting member 33 and the vertical U-shaped member 43. At this time, the double-hole connecting member 33 and the vertical U-shaped member 43 are perpendicular to each other.

[0189] like Figure 37 The figure shows the positional relationship between the double-hole connecting member 33 and the vertical U-shaped member 43 when the insulated box is folded back. At this time, the crescent is opposite to the reinforcing plate and the Y-shaped member. Figure 35 In comparison, the double-hole connector 33 has been rotated 180° around the vertical axis of the vertical U-shaped member 43. After the rotation, the left box panel 13 and the vertical female box panel 42 and the right box panel 4 and the front box panel 12 are respectively attached to the outer surface, so that the inner surface of the box is transferred to the outer side. The insulating cone plate 38 fixed to the inner surface also turns outward. Its greater thickness does not affect the folding of the box. Figure 34 As shown, after being folded flat, the vertical male buckle loose-leaf plate 32 is still connected to the vertical female buckle box plate 42, and the vertical male buckle 36 is located in the empty space where the vertical female buckle body 35 exits.

[0190] Figure 10 yes Figure 37 The FF cross-sectional diagram clearly reflects the perpendicular connection relationship between the double-hole connecting member 33 and the vertical U-shaped member 43 when the heat preservation box is folded back. Figure 9 In contrast, the double-hole connector 33 has been rotated 180° around the fixed hole, and the back plate is now facing outward.

[0191] Figure 8 is a schematic diagram of the isometric structure of the fixed frame 34. To facilitate the quick and accurate installation of the vertical climbing buckle, the fixed frame 34 and the vertical locking member 37 are equipped with positioning and limiting devices. Simply insert the vertical female buckle body 35 and the vertical male buckle 36 into the positioning groove HH of the fixed frame 34 and the slot of the vertical locking member 37, respectively, to accurately engage the male and female buckles. This facilitates the installation and use of the vertical climbing buckle. This is achieved by the mutual cooperation of the upper and lower inner side surfaces AA of the fixed frame 34 with the upper and lower outer side surfaces CC of the locking member 37, as well as the vertical inner side surface BB with the front end surface DD of the locking member 37. The positioning groove HH for installing the vertical female buckle body 35, the slot for installing the vertical male buckle 36, and the aforementioned positioning surfaces are relatively fixed, thus achieving the purpose of positioning.

[0192] Figure 64is the A-A sectional view of the fixed frame 34 of Fig. 8. The positioning sliding groove HH is composed of two side faces and a groove bottom KK. On the inner side of the two side faces near the bottom plane of the fixed frame, a shoulder type sliding groove is dug between the groove bottom KK and the limiting platform GG.

[0193] The support EE of the fixed frame 34 near the opening is a process column to prevent the opening of the frame from deforming. The space for the support EE needs to be dug on the back of the thermal insulation cone plate 38 or on the corresponding position of the vertical public buckle 36 and the vertical locking member 37. The size and position of the support EE should not hinder the sliding position of the vertical female buckle body 35 and should not affect the buckling of the vertical public buckle 36. The back face FF is provided with a Y-shaped structure to connect the soft box plate at the back face FF, which serves to connect and reinforce the fixed frame 34. It is also connected with rivets and straight pressure plates. In order to make the drawing simple, Figure 33 、 Figure 34 、 Figure 35 and Fig. 38 does not show the Y-shaped structure connection method of the back face FF of the fixed frame 34.

[0194] As shown in Figure 31 , the two side edges of the vertical female buckle body 35 are provided with outer shoulders. Figure 32 is an isometric side structure diagram of the vertical female buckle body 35. The inner shoulder on both sides of the positioning sliding groove HH of the fixed frame 34 of Fig. 8 is in sliding fit, and the inner shoulder is not connected with the BB face. This disconnected part constitutes the limiting platform GG to prevent the vertical female buckle body 35 from slipping off and serves as a positioning function. That is, when the vertical female buckle body 35 is at this limiting position, it can ensure accurate buckling with the vertical public buckle 36.

[0195] Figure 32 The vertical female buckle body 35 in Figure 24 compared with the female buckle body 26 in , cancels the rivet hole and U-shaped groove at the tail, and adds outer shoulders on both sides.

[0196] Fig. 38 is an isometric side structure diagram of the vertical female buckle of the vertical female buckle box plate 42 when the sliding groove is retracted. In this example, the rear box plate 1 is cut vertically along the opening end side face II of the fixed frame 34. There are a fixed frame 34 and two vertical female buckle bodies 35. The fixed frame 34 is connected to the Y-shaped plate with double bevels of the upper and lower U-shaped members by rivets 19. The vertical female buckle body 35 is installed in the sliding groove and slides on the back of the thermal insulation cone plate 38. The thermal insulation cone plate 38 is fixed to the inner surface of the rear box plate 1 by screws 41. The number and position of the screws 41 are not shown in the figure.

[0197] Figure 39 is an isometric view of the vertical buckle hinge 32, the hinge U-shaped piece 58 is integrated with the vertical locking piece 37, and the two vertical buckles 36 are fixed in the two positioning slots of the vertical locking piece 37 by rivets 19. The vertical shaft is connected in the hole of the long vertical U-shaped piece of the right box plate 4, and the buckling and unbuckling actions are completed by rotating around the vertical shaft. The hinge U-shaped piece 58 here is also the wide vertical U-shaped piece of the rear box plate 1.

[0198] Figure 17 Figure 40 is a schematic view of the cross-sectional structure of the front box plate 12. For the sake of drawing, the front box plate 12 is treated as a whole part, and its structure is not drawn in detail at the cross-section. The four sides of the heat preservation cone plate 38 are all inclined at an angle of 45°, forming a cone with a 45° angle on each side. The bottom of the cone is a section of a right rectangular prism. Because their shapes are the same, the only difference is that the size of the box plate is different, resulting in a difference in length and width. Therefore, they all use the same part number. Because the general heat preservation material is relatively soft, it is easy to cause damage during use. Therefore, the heat preservation plate 38 is wrapped and protected as a whole by the wrapping piece 40, thereby prolonging its service life. The disc of the disc nut 39 should be as large as possible to press the soft heat preservation cone plate 38 by expanding the area, and the screw 41 is tightened and fixed, which is generally fixed on the reinforced support rib plate.

[0199] In order to eliminate the gap between the abutting surfaces of the two heat preservation plates caused by manufacturing errors, an elastic sealing piece 57 is used, which is attached to the four inclined surfaces of the heat preservation cone plate 38 and installed in the groove for installing the elastic sealing piece 57, so as to eliminate the gap and improve the sealing and heat preservation performance. The elastic sealing piece 57 is not shown in other drawings.

[0200] Figure 40 Figure 41 is a schematic view of the isometric structure of the unfolded product. After the vertical flat buckle is unlocked, the long and wide box plates are unfolded, the box covers are folded upward and downward respectively, and the double-hole elbow at two places is rotated to the outer surface of the box, which is in contact with the outer surface. Smoothly arrange. The outer surfaces of the left box cover 2 and the rear box cover 6 are in contact, the outer surfaces of the right box cover 3 and the front box cover 5 are in contact, and all the box covers are folded upward. The rear box plate 1 and the right box plate 4 are pulled flat, the front box plate 12 and the left box plate 13 are pulled flat, and the outer surfaces are in contact, and the inner surfaces are outward. The outer surfaces of the rear box bottom 9 and the left box bottom 10 are in contact, the outer surfaces of the right box bottom 7 and the front box bottom 8 are in contact, and all the box bottoms are folded downward.

[0201] Figure 18This is a schematic cross-sectional view of the groove of the double-hole connector 33, a key structural component for transitioning between the inside and outside of the insulated box. The double-hole connector 33 is composed of two circles with diameters equal to the wall thickness, tangent to each other at the center line, and connected by two common tangents. It is similar to being formed by butting two "U" shapes together. The two inner holes have the same diameter as the shaft 11. The concave section at the connection with the vertical U-shaped member 43 is formed by rotary cutting with a circular milling cutter with a diameter equal to the wall thickness. Three crescent shapes that need to be folded are removed along the center line connecting the two circles to ensure that the outer circle of the convex section of the vertical U-shaped member 43 can rotate in the groove, leaving a crescent connecting the remaining convex sections. A reinforcing plate with a width less than 1 / 2 the wall thickness and of appropriate thickness is added to the back of this crescent. This plate, also called a back plate, runs through one side of the entire double-hole connector 33 to enhance the connection strength of the crescent. The hole without the crescent is connected in series with the hole of the vertical U-shaped member 43 by the shaft 11 to form a fixed hole. The other hole with a crescent is a movable hole, threaded into the wide vertical U-shaped hole on the wide box board, with the crescent side located on the inside of the box. The movable hole can rotate around the fixed hole axis within a range of 0°-180°, thus allowing the inside and outside of the long and wide boxes to be interchanged.

[0202] exist Figure 18 The upward-protruding block in the middle is the back plate, which is used to increase the strength of the crescent here and serve as an auxiliary connection.

[0203] The convenience of this box is that it can be folded back, which is a bit more complicated than the box in Example 1 that can be folded with a snap. However, compared with the polyester foam insulation boxes currently used, which cannot be folded, it is a big step forward.

[0204] Example 3:

[0205] This example is also based on the box in Example 1, with a slight improvement. An airbag assembly is installed in the box to protect the items in the box with the airbag.

[0206] In this example, the Y-shape in the U-shaped part related to the installation of the airbag group is offset a distance to the outside, which is different from the structure of the U-shaped part in Example 1 and Example 2, but the installation position and function of the box panel are the same. For the sake of continuity and convenience of description and comparison, the part names and numbers in Example 1 and Example 2 are continued.

[0207] Figure 41 It is an isometric structural diagram of the airbag box after it is unfolded. After the box is sealed, the head of the valve mouth 44 is exposed to the outside, which is convenient for inflation and deflation. Figure 42 This is an isometric structural diagram of the airbag box with the upper cover opened. Figure 43 This is the main view of the airbag assembly and valve nozzle. Figure 44 It is a top view of the airbag assembly and valve stem.

[0208] like Figure 43 、 Figure 44As shown, the air bag is composed of air bag upper half 54, air bag lower half 55 and air passage Q. Air bag upper half 54 and air bag lower half 55 are made of the same film material and are bonded to form air bag and air passage Q. Each air bag group is composed of several air bags and air passages Q. The air bags are connected by air passages Q. The tail of valve 44 is bonded between air bag upper half 54 and air bag lower half 55. As shown, Figure 41 , Figure 42 As shown, the head of valve 44 is installed in the fixed circular hole of elbow U-shaped piece 21 and is slightly higher than the plane. The end corner of long cover U-shaped piece 25 which would hinder the installation of the head of valve 44 is removed by a part which is slightly larger than the head of valve 44 to facilitate the operation of air intake, air sealing and air exhaust of valve 44. Valve 44 is a standard part and is only applied here. Its structure is not introduced.

[0209] As shown, Figure 44 The box is divided into front and back, left and right and cover and bottom six inner surfaces. Four air bag groups are needed for the two long and wide surfaces. The cover and bottom are divided into left and right halves and also need four air bag groups. A total of eight air bag groups are combined to form an air bag assembly 45. The air bag groups are connected by air passages Q. The air bag groups of the cover and bottom are connected to the air bag groups of the wide box plate. Valve 44 is installed on the first air bag of left box plate air bag group 46. Front box cover air bag group 48 and front box bottom air bag group 49 are located at the upper and lower ends of front box plate air bag group 47 respectively and are connected by air passages Q. Right box plate air bag group 50 is connected to front box plate air bag group 47 and rear box plate air bag group 52 by air passages Q. Rear box cover air bag group 51 and rear box bottom air bag group 53 are located at the upper and lower ends of rear box plate air bag group 52 respectively and are connected by air passages Q. Left box plate air bag group 46 is connected to front box plate air bag group 47 by air passages Q. The circular through holes distributed at the four corners of the air bag groups are fixing holes for the air bag groups.

[0210] As shown, Figure 42 The installation of air bag assembly 45 in the box is very simple. First, left box plate air bag group 46 with valve 44 is installed in the recess of left box plate 13. Valve 44 is fixed at the mouth of the fixed circular hole after passing through the hole between the fixed circular hole and Y-shaped piece. As shown, Figure 45As shown, the Y-shaped part of the long horizontal U-shaped part 20 is offset to the outside by a distance, which is enough to accommodate the thickness of the air bag after deflation. The Y-shaped part of the four U-shaped parts that make up the box plate frame are all offset by the same distance, forming a recess for mounting the air bag group. At this time, the straight pressing plate 16, rivet 19, and the outer panel 29, flat-top corrugated plate 30, and inner panel 31 that make up the soft box plate are all offset by the same distance. A number of card slots that can insert rubber peg heads are provided in the pit corresponding to the fixing hole positions on the air bag group. The fixing holes of the air bag assembly 4 are threaded onto the rubber pegs, and the rubber peg heads are inserted into the corresponding card slots. In the same way, the remaining air bag groups are sequentially fixed in the corresponding box plate recesses, and the installation of the air bag assembly 45 in the box is successfully completed. A reusable air bag box is formed, which needs to be unfolded when in use, the screw cap on the air valve 44 is unscrewed, the air bag is inflated, and the air valve is still capped with a screw cap after inflation. The air bag is placed in the box and sealed. When the air bag box is used up, the air valve 44 screw cap is unscrewed, the valve in the air valve 44 is pressed to release the gas in the air bag, and the air valve is sealed with a screw cap. The air bag box is folded for storage and standby use. The rubber pegs have a certain elasticity and can stretch and contract with the inflation and deflation of the air bag group, achieving the purpose of dynamically fixing the air bag group.

[0211] After deflation, the air bag group is withdrawn into the respective recess under the action of the rubber pegs, without affecting the folding of the air bag box. The folding method is the same as in Example 1, and the folded appearance is also the same as in Example 1 Figure 2 Similarly.

[0212] A single-sided inflatable air bag composed of a common material and a flexible material bonded together has a structure basically the same as an inflatable air bag composed of double-layer flexible material. It is worth noting that the common material without elasticity also has a certain foldability to facilitate the connection of the air duct between the air bag groups.

[0213] Regarding the box with shock-absorbing plates, if the shock-absorbing plates are installed in the recess, their thickness does not affect folding, and the box structure of Example 3 can be used. If their thickness affects folding, the box structure of Example 2 is used. The structures are similar, and will not be described in detail.

[0214] Example 4

[0215] This example is a simple introduction to the structure of a retractable box cover, a flat-dog box cover, and a self-balancing flat-dog.

[0216] For some long, wide size difference between the box, the front, back box cover box folding after the left and right box cover box than long out a lot, affect the stacking packing. So to make the structure, the long part back. Especially the insulation box, shock box and air bag box, many times left and right box cover box bottom and front, back box cover box bottom exchange position, because sometimes the insulation board, shock plate and air bag assembly in left and right box cover box bottom may be more appropriate. Exchange in the outer layer of the box, the front, back box cover box bottom may be made into a telescopic box cover, box.

[0217] Generally box in the outer layer of the left, right box cover box bottom of the mouth with flat climbing buckle sealing box, and the inner layer of the front, back box cover box bottom is not necessarily flat climbing buckle sealing box, at this time the structure of the box cover without flat climbing buckle is adopted.

[0218] For empty box, half box and the goods in the box is virtual, the box cover may collapse, thereby affecting the flat climbing buckle. At this time, the flat climbing buckle is increased with a self-balancing device.

[0219] (1) telescopic box cover

[0220] Figure 49 is the main view structure diagram of square hole sealing element 61, a plurality of rectangular holes are made on the front surface of the sealing element, the number of holes is determined according to the length of the sealing element. T-shaped strip 60 is a round hole at one end, and the other end is a narrow strip of left and right shoulder, the width and thickness are the same as the length and width of the rectangular hole, and the length and short are related to the large and small of the telescopic size of the box cover.

[0221] Figure 50 is the isometric side structure diagram when T-shaped strip 60 is inserted into square hole sealing element 61, the round hole end of T-shaped strip 60 is outside square hole sealing element 61, and the shoulder end is on the same side of Y-shaped structure. T-shaped strip 60 can slide freely in the rectangular hole.

[0222] Figure 46 is the main view structure diagram when the telescopic front box cover is pulled out, Figure 47 is the main view structure diagram when the telescopic front box cover is retracted, the structure of the pressing plate and the soft box plate and rivet is not shown in the figure. The soft box plate of the small box can be cancelled, and the flat top corrugated board of the shoulder sliding part of T-shaped strip 60 can be removed for the large box. No bevel locking element 66, because Y-shaped structure is no longer connected with the frame, so it does not need the bevel at both ends. The two positioning clamping grooves of no bevel locking element 66 are installed with male buckle, the head of T-shaped strip 60 round hole is installed in the corresponding small square notch of Y-shaped structure, and the small square notch is specially set for installing T-shaped strip 60. And fixed with pressing plate and rivet. The frame of the front box cover is the fixed part, and the no bevel locking element 66 and the male buckle are the movable part. When used, it is lengthened, and when folded, it is shortened.

[0223] The structure of the telescopic front box bottom is the same as that of the telescopic front box cover. The structure of the telescopic rear box cover and the bottom is the same as that of the telescopic front box cover, except that the female buckle is installed in the bevel-free lock edge member 66.

[0224] There are gaps between the T-shaped strips of the telescopic box cover and the bottom. Since the left and right box covers and the bottom are flat and buckled, the sealing performance of the box is not affected.

[0225] (2) Box cover without flat buckle

[0226] Figure 48 Figure 7 is a partial cross-sectional view of the front box cover 5 without flat buckle, in which the long-slot U-shaped member 65 is used to replace the lock edge member to block the mouth of the front box cover 5. Figure 54 Figure 8 is a top view of the long-slot U-shaped member 65. The two ends of the Y-shaped member have 45° bevels and concave-convex positioning buckles. There is a groove on each of the U-shaped members near the two ends, which is the position for installing the straight buckle 64. However, the middle part of the long-slot U-shaped member 65 coincides with the position for buckling the left and right box covers, and the straight buckle 64 cannot be installed in this position. A narrow rectangular through hole is formed between the bottom of the groove and the Y-shaped member. A thin rectangular body is formed between the bottom of the groove and the narrow rectangular through hole. The middle part of the thin rectangular body can be deformed to the narrow rectangular through hole when pressed. Figure 55 Figure 9 is a front view of the structure of the straight buckle 64. The structure of the straight buckle 64 is a "U"-shaped flat mouth with a square vertical tooth on the top of the flat mouth.

[0227] Figure 56 Figure 10 is an isometric view of the straight buckle 64. A semicircular structure with a radius R2 is added to the middle circular arc part of the straight buckle 64. The radius R2 is larger than the radius R1 of the "U"-shaped structure. A flat surface is formed at the top of the R2 arc and the left side of the R2 arc, which is tangent to the R1 arc. A vertical surface is added to the right side of the R2 arc, which is tangent to the R2 arc. Figure 19 Figure 11 is a partial cross-sectional view of the straight buckle 64 when it is raised. The straight buckle 64 is integrated with the long-slot U-shaped member 65 by the shaft 11. The left vertical surface of the straight buckle 64 is close to the groove bottom surface of the long-slot U-shaped member 65, and the distance between the groove bottom surface and the center of the inner hole of the straight buckle 64 is equal to R1. Since the radius R2 is larger than the radius R1, the larger vertical surface part will block the rotation of the straight buckle 64 to the outside of the groove. Only when the middle part of the thin rectangular body is pressed and deformed to the narrow rectangular through hole, the straight buckle 64 can be rotated to the outside of the groove. The vertical surface added to the right side is a false operation prevention setting to prevent the straight buckle 64 from being pulled in the opposite direction when it is raised.

[0228] As shown in Figure 48As shown, in the place where the square vertical teeth of the straight catch teeth 64 of the front box cover 5 coincide on the left box cover 2, there are provided the long-hole pressing plate 63 and the long-hole Y-shaped piece 62 in place of the long-hole through slot, and the double-inclined pressing plate 18 is located on the outer side and is fixed by riveting with the rivet 19. The square vertical teeth of the straight catch teeth 64 are inserted into the long-hole through slot, limiting the movement of the front box cover 5, thereby pulling the front box cover, and achieving the purpose of preventing the front box cover from being violently opened. The coupling of the long-slot U-shaped piece 65 with the soft box cover of the front box cover 5 is also achieved by pressing the inner and outer panels of the soft box cover into the Y-shaped slot with the two straight pressing plates 16, and fixed by riveting with the rivet 19.

[0229] On the right box cover 3, in the same position as that of the left box cover 2, there are also provided the long-hole pressing plate 63 and the long-hole Y-shaped piece 62 in place of the long-hole through slot.

[0230] Figure 53 is an isometric side structure schematic diagram when the straight catch teeth 64 are erected, and the two erected straight catch teeth are inserted into the long-hole through slot of the left box cover 2 on the left side and into the long-hole through slot of the right box cover 3 on the right side.

[0231] The structures of the long-slot U-shaped pieces 65 and the straight catch teeth 64 of the rest of the front box bottom, the rear box cover and the rear box bottom without the flat climbing catch are the same as those of the front box cover 5, and the structures and installation and fixation of the long-hole pressing plate 63 and the long-hole Y-shaped piece 62 of the right box cover, the left box bottom and the right box bottom are the same as those of the left box cover 2.

[0232] Figure 51 is a partial cross-sectional schematic diagram when the straight catch teeth 64 of Example 4 are pulled flat, Figure 52 is an isometric side structure schematic diagram when the straight catch teeth 64 are pulled flat. The circular arc top flat surface of the straight catch teeth 64 is in close contact with the groove bottom surface of the long-slot U-shaped piece 65, because R2 constituting the circular arc top flat surface is larger than R1. Whether the straight catch teeth 64 are turned upward or downward, they will press the thin cuboid. This structure is mainly to prevent the free swinging of the straight catch teeth 64, so as to facilitate the stacking of the folded box. Similarly, the design when the straight catch teeth 64 are erected is also to prevent their free swinging, so as to facilitate the insertion into the corresponding long-hole through slot.

[0233] The mouth of the front and rear box cover bottom without the flat climbing catch cannot be closed, because the left and right box cover bottoms are flat climbing catch fastened, so it does not affect the sealing performance of the box.

[0234] (3) Self-balancing flat climbing catch

[0235] Figure 61 is a front view structure schematic diagram of the self-balancing flat climbing catch, and the appearance when the self-balancing flat climbing catch is opened, and the pressing plate is in close contact with the giving-in inclined surface. Figure 62 is a top view structure schematic diagram of the self-balancing flat climbing catch, and the self-balancing device of the flat climbing catch is divided into the outer sides of the two clamping arms, and there is a certain distance between the clamping arms, which does not hinder the swinging of the clamping arms. Figure 63is the isometric side structure diagram of the self-balancing flat climbing buckle, which consists of four parts, namely, the self-balancing male buckle 68, the self-balancing female buckle body 67, the buckle pressing plate 27, and the buckle shaft 28. The buckle shaft 28 connects the self-balancing female buckle body 67 and the buckle pressing plate 27 into a self-balancing female buckle. The self-balancing male buckle 68 and the self-balancing female buckle are collectively referred to as the self-balancing flat climbing buckle.

[0236] Figure 57 is the front view structure diagram of the self-balancing female buckle body 67, Figure 59 is the isometric side structure diagram of the self-balancing female buckle body 67, which is symmetrically distributed along the center line between the left and right faces. On the left and right sides of the front platform, there is a narrow cuboid longer than the front platform, which is the self-balancing device of the self-balancing female buckle and the self-balancing male buckle.

[0237] Figure 58 is the front view structure diagram of the self-balancing male buckle 68, Figure 60 is the isometric side structure diagram of the self-balancing male buckle 68, which is provided with a narrow vertical through slot on the outer side of the two clamping arms and a sunken step with the same thickness as the front platform, which is the self-balancing device of the self-balancing male buckle and the self-balancing female buckle body.

[0238] As shown in Figure 61 , the narrow cuboid is pressed on the sunken step, and there is a large gap between the front end face of the narrow cuboid and the inner side vertical face of the sunken step, which is to prevent interference when buckling. As shown in Figure 62 , Figure 63 , a pair of clamping arms are pressed on the front platform face. They press and support each other to achieve balance.

[0239] The above four examples have different uses but the same basic structure. Examples 2 and 3 are modified versions of Example 1, and Example 4 is a supplement to the shortcomings of the above three box structures. They are derived from the same structure, frame, soft box plate, and flat climbing buckle, and have the same idea of recycling and reducing waste. By making full use of existing materials and technology, we can try to solve the current pollution and waste.

[0240] Main term notes

[0241] 1. Wall thickness - the thickness dimension of the box plate, which is the abbreviation of the thickness dimension of the box plate, represents the numerical value of the thickness dimension of the box plate. Wall thickness is both a name and a numerical value. For example, 'the width is equal to the width of the box minus two wall thicknesses', where the wall thickness refers to the numerical value of the thickness dimension of the box plate.

[0242] 2. Support - the meaning of two components contacting and supporting each other.

[0243] 3. Unfold - opening the folded box to the appearance when the goods are loaded, at which time the box cover and the box bottom have the shape after closing.

[0244] 4. Fit - the meaning of convex shape into concave shape without gaps.

[0245] 5. Series - Series is the same as Tandem.

Claims

1. A case with a flat crawl buckle, characterized in that The swingable hole in the double-hole coupling is called the movable hole, and the other hole that matches the round hole of the flat U-shaped piece as a concentric circle with an equidistant concave-convex structure is called the fixed hole. A vertical shaft is inserted into the concentric hole to couple the double-hole coupling and the flat U-shaped piece into one, which forms a double-hole elbow U-shaped piece. The double-hole coupling and the flat U-shaped piece are fixed together at a 90° right angle position, and the back plate is removed to form an elbow U-shaped piece. The Y-shaped structure at the length of the U-shaped piece, the locking piece, the long slot U-shaped piece, the sealing piece, and the square hole sealing piece is provided with a 45° bevel and a positioning clamping tooth in the shape of a complementary concave and convex shape on the bevel. The long box plate uses one elbow U-shaped piece and three flat U-shaped pieces, the reverse folding box long box plate uses one double-hole elbow U-shaped piece and three flat U-shaped pieces, the wide box plate uses four flat U-shaped pieces, the box cover and the box bottom use one locking piece, one flat U-shaped piece, and two sealing pieces, the front and rear box cover and box bottom without flat climbing clamps use two sealing pieces, one long slot U-shaped piece, and one flat U-shaped piece, and the box plate of the telescopic front and rear box cover and box bottom uses two sealing pieces, one square hole sealing piece, and one flat U-shaped piece. According to the positioning clamping tooth, the horizontal and vertical splicing forms a square, and the frame of the box plate is formed. The soft box plate composed of inner and outer panels and flat top corrugated board is installed in the frame, and the inner and outer panels around the soft box plate are pressed into the grooves on both sides of the "Y" shape using 90° pressure plates with rivet holes and bevels and straight pressure plates, and are fixed by rivets. The double-head Y-shaped piece and double inclined pressing plate are added in the horizontal and vertical direction of the frame as reinforcing support rib plate; each box plate is matched according to the mutual position relationship in the box, the matching U-shaped piece between the long and wide box plates adopts the equidistant concave-convex structure instead of crescent, the round holes of the two U-shaped pieces are matched as concentric round holes, the bottom of the concave section has a crescent on one side; each pair of U-shaped pieces is connected by a shaft, thus a box with twelve box plates is formed; the flat U-shaped piece is combined by the "U" shape and "Y" shape from the horizontal cross section, the opening of the "U" is sealed by a horizontal plate, which is called flat mouth part, and a concentric round hole is added in the semicircle, thus the "U" shape is formed; the double-hole connecting piece is that the flat mouth parts of the two "U" shapes are butted together, and a back plate is added to splice and form; the "Y" shape is that a vertical plate has two inclined surface bodies extending symmetrically to the left and right upper side at the top, and a short vertical plate is arranged at the top of each inclined surface body; the vertical plate is a vertical division of the lower half of the "Y", and the two symmetric inclined surface bodies are the upper half of the "Y"; the lower end of the "Y" shape is perpendicular to the flat mouth part of the "U" shape, thus the flat U-shaped piece is formed; a flat plate perpendicular to the tail of the "Y" shape is added at the lowermost end of the "Y" shape, thus the edge sealing piece is formed; a long vertical plate is added downward at one end of the flat plate of the edge sealing piece, a long vertical plate is added in the middle part of the long vertical plate, and a small flat plate in the same direction as the flat plate is added at the lowermost end, thus the edge locking piece is formed; the edge locking piece is provided with a plurality of positioning clamping grooves capable of mounting male and female buckles, the male and female buckles are respectively mounted in the edge locking pieces of the box cover and the box bottom, and the male and female buckles are collectively called flat climbing buckles; the male buckle has two symmetric clamping jaws, the clamping jaw is composed of a buckle head and a curved clamping arm formed by two 90° straight bends, and is a "T" shaped structure, the top horizontal is the buckle head, and the vertical represents the curved clamping arm; the structure of the male buckle is symmetrically distributed along the center line between the left and right surfaces; the bottom boss of the buckle head is the lower hook, the leftmost and rightmost bosses on the two buckle heads are the left and right locking tongues, the part on the outer side of the clamping arm on the buckle head is the upper hook, there is a step between the locking tongue and the top surface of the buckle head, which is called the locking step, there is a step between the bottom surface of the locking tongue and the bottom surface of the lower hook, which is called the sliding stop step, and the left and right opposite inclined surfaces on the two buckle heads are the pushed inclined surfaces; the root of the clamping arm is integrated with the body of the male buckle, the roots of the two clamping arms each have a narrow long vertical through groove, two small inclined platforms and a small gap in the middle, the tail of the body of the male buckle has the same structure as the tail of the body of the female buckle, which is a U-shaped through groove composed of two straight pressing plates; the female buckle is composed of the female buckle body and the buckle pressing plate connected by a buckle shaft, the structure of the female buckle body is divided into three parts, i.e., front, middle and tail, and is symmetrically arranged along the center line between the left and right surfaces, the outer shape of the female buckle body is a positive rectangular structure, the middle part is a "cross" shaped through hole, the top end of the "cross" has a give way inclined surface, the middle part of the "cross" has a buckle shaft through hole perpendicular to the left and right surfaces, the long through groove in the middle part of the "cross" is a sliding groove, the wide surface at the length ends of the sliding groove is a sliding stop surface, the through hole on the top platform of the sliding stop surface is a left and right locking hole, the hole wall of the locking hole is closed, the long vertical surface at the front end in the sliding groove is a lower hook, and the left and right rectangular columns rising from the lower hook are left and right upper hooks.The upper part of the left and right upper buckling table has a pressing table extending to the center. The vertical surface of the upper part of the locking hole is the locking surface. The short through slot of the "10" shaped lower end is used for the double inclined surface boss on the buckling plate to give way when swinging. The front part of the female buckle body is a front platform extending from the bottom surface with a gap for giving way. The structure of the buckling plate is symmetrically distributed along the center line between the left and right surfaces. The buckling plate is the body of the buckling plate, and the front, middle and tail parts are integrated. The front end is a long gap with a U-shaped buckle. The middle part of the buckle tooth is provided with a gap opposite to the position of the small gap in the male buckle. The gap has a micro convex vertical platform. The middle part is a double inclined surface boss composed of two main pushing inclined surfaces. The tail part of the buckling plate is a concentric circular ring structure. A self-balancing device is added to the flat climbing buckle. Two narrow rectangular bodies are added to the left and right sides of the front platform of the female buckle body. The narrow rectangular body is longer than the front platform. A sunken step is dug out on the outside of each clamping arm of the male buckle body. A narrow vertical through slot is also provided between the sunken step and the clamping arm. In the front and rear box covers and the box bottom without the flat climbing buckle, a U-shaped long slot is provided with a plurality of pairs of grooves and narrow rectangular through holes. A thin rectangular body is provided between the bottom of the groove and the narrow rectangular through hole. A straight buckle tooth is installed in the groove. The structure of the straight buckle tooth is a square vertical tooth with a tapered top added to the flat mouth of the "U". A semicircle with a radius R2 is added to the middle part of the straight buckle tooth with a width larger than R1. A vertical surface and a top surface are made on the left side of the straight buckle tooth and the top of the R1 arc, which is tangent to R1. A vertical surface is added to the right side, which is tangent to R2. A long hole Y-shaped piece with a long rectangular hole through slot and a long hole pressing plate are arranged at the overlapping position of the square vertical tooth of the straight buckle tooth erected in the grooves of the left and right box covers and the long slot U-shaped piece. The square vertical tooth is inserted into the long rectangular hole through slot. An extension device is installed in the front and rear box covers. A square hole sealing piece is provided with a plurality of square holes through the Y-shaped structure on the front surface of the flat plate. A T-shaped long strip is installed in the square hole of the square hole sealing piece. The head of the T-shaped long strip has left and right shoulders, and the tail has a rivet hole. A Y-shaped gap is opened in the Y-shaped part of the flat climbing buckle with no beveled edge locking edge piece, which has the same size and position as the square hole of the square hole sealing piece. Two straight pressing plates are used to press the tail of the T-shaped long strip and rivet it. After the vertical flat climbing clamps are buckled, it is a complete box. After the vertical flat climbing clamps are opened, the vertical box body of the box is broken, and the box plate can be laid out flat. The long and wide box plates are folded in the opposite direction around the vertical shaft, the inner and outer surfaces of the box are reversed, and the original heat preservation cone plate installed on the inner surface of the box is now turned to the outside. The box cover and the box bottom are respectively folded upward and downward around the horizontal shaft. The gas nozzle is installed in the fixed circular hole of the elbow U-shaped piece, the Y-shaped structure in the U-shaped piece is offset to the outer surface direction, the inner side has a space larger than the thickness of the installed air bag after the air is exhausted, and the four Y-shaped structures of the frame are offset at the same time to form a pit. The air bag group is installed in the pit using rubber nails, and the four vertical box plates and the inner pit of the front and rear box cover and box bottom are all installed with air bags. All the air bags are connected by air pipes to form an air bag box that can be inflated when used and deflated when not used.

2. A case with flat-climbing buckles as claimed in claim 1, characterized in that it is thermally insulated. The cone plate is a square cone plate with a single bevel angle of 45°, and the starting point of the 45° bevel and the bottom surface of the cone plate should be kept straight. Six cone plates with the same thickness are spliced into a complete box, four of which are used as vertical box plates and installed on the inner side of the long and wide box plates. The other two are used as the box cover and the box bottom, which are divided into two halves along the length of 1 / 2 and installed on the inner surface of the front and rear box cover and box bottom. The heat preservation cone plate is wrapped with a sheet material resistant to low temperature and scratching. Before wrapping, a number of disc-shaped nut pieces are pre-installed at the positions where the screws are needed to be fixed on the heat preservation cone plate. The elastic sealing strip is inlaid in the groove on the heat preservation cone plate where the sealing strip is installed.

3. A case with flat-climbing buckles as defined in claim 1, characterized in that The cross-sectional shape of the flat top corrugated board is a continuous arrangement of an isosceles trapezoidal structure with a positive and a negative. The top of the isosceles trapezoid is a straight surface.

4. A case with flat-climbing buckles as defined in claim 1, characterized in that An air bag is formed by bonding a non-elastic sheet and an elastic sheet to each other to form a single-sided inflatable air bag. An air bag is formed by bonding a non-elastic sheet and an elastic sheet to each other to form a single-sided inflatable air bag.

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