Collapsible multi-purpose bag and method of folding the same

Abstract

The application discloses a foldable multi-purpose storage bag and a folding method thereof. The foldable multi-purpose storage bag comprises a bag body in a rectangular shape, and the bag body comprises an opening, a bottom surface arranged away from the opening, two main surfaces and two side surfaces. The bag body is provided with a first fold line and a second fold line arranged in an upper-lower interval, and the main surfaces and the side surfaces are provided with the first fold line and the second fold line. X-shaped fold lines are arranged between the left and right ends of the first fold line on the side surface and the left and right ends of the bottom surface of the side surface, and the X-shaped fold lines intersect on the second fold line. The first fold line, the second fold line and the X-shaped fold line are arranged to enable the bag body below the first fold line to be folded into a plate shape, thereby reducing the height of the bag body, and enabling the bag body to be applicable to scenes requiring different capacities or heights.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of daily necessities, in particular to a foldable multi-purpose bag and a folding method thereof. BACKGROUND

[0002] Bags have become an essential item in daily life, bringing great convenience to people's life. Many existing bags are designed to be foldable to reduce the inconvenience of carrying the bag. However, the existing bags can only be used in one life scene and cannot be applied to different life scenes, which has poor versatility. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a foldable multi-purpose bag and a folding method thereof.

[0004] The foldable multi-purpose bag according to the first aspect of the present application comprises a bag body in a rectangular shape, the bag body comprising an opening, a bottom surface arranged away from the opening, two major surfaces and two side surfaces; the bag body is provided with a first fold line and a second fold line arranged in an upper and lower manner, and the major surfaces and the side surfaces are provided with the first fold line and the second fold line; the left and right ends of the first fold line on the side surface and the left and right ends of the bottom of the side surface are provided with an X-shaped fold line, and the X-shaped fold line intersects on the second fold line.

[0005] The foldable multi-purpose bag according to the embodiments of the present application has at least the following technical effects: the first fold line, the second fold line and the X-shaped fold line are provided to enable the bag body below the first fold line to be folded into a plate shape, thereby reducing the height of the bag body and enabling the bag body to be applicable to scenes requiring different capacities or heights.

[0006] According to some embodiments of the present application, the side surface is provided with a vertical fold line extending from the intersection of the X-shaped fold line and the second fold line to the lower end of the side surface, and the bottom surface is provided with a horizontal straight fold line extending from one of the side surfaces to the other side surface.

[0007] According to some embodiments of the present application, the bottom surface is provided with two first herringbone-shaped inclined fold lines, one end of the first herringbone-shaped inclined fold line is connected to the horizontal straight fold line, and the other end of the two first herringbone-shaped inclined fold lines is respectively connected to two corners of the front end of the bottom surface and two corners of the rear end of the bottom surface.

[0008] According to some embodiments of the present application, the vertical fold line extends from the top end to the bottom end of the side surface.

[0009] According to some embodiments of the present application, a second herringbone-shaped inclined fold line is arranged between the top end of the vertical fold line and the left and right ends of the first fold line on the side surface.

[0010] According to some embodiments of the present application, a third herringbone oblique fold line is arranged between the top end of the vertical fold line and the left and right ends of the second fold line on the side surface, and the first oblique fold line is arranged between the connection of the side edge of the main surface and the second fold line and the top end of the main surface.

[0011] According to some embodiments of the present application, the angle between the first oblique fold line and the side edge of the main surface is α, and α is 60°-82°.

[0012] According to some embodiments of the present application, the bag body is provided with a plurality of magnetic members, which are used to keep the bag body in a folded state after folding.

[0013] According to some embodiments of the present application, the height between the second fold line and the bottom surface is defined as L1, the height between the first fold line and the second fold line is defined as L2, the height between the upper end surface of the bag body and the first fold line is defined as L3, and the width of the bottom surface is defined as L4, L1=L2=L3, and L1+L2+L3=1.5L4.

[0014] The folding method of the foldable multi-purpose storage bag according to the second aspect of the embodiments of the present application adopts the foldable multi-purpose storage bag according to the first aspect of the embodiments of the present application.

[0015] The folding method comprises the following steps:

[0016] S1, pressing the center position of the X-shaped fold line to move the center position of the X-shaped fold line to the inside of the foldable multi-purpose storage bag;

[0017] S2, abutting the first fold line with the edge of the bottom surface to make the second fold lines of the two main surfaces close to each other.

[0018] The folding method of the foldable multi-purpose storage bag according to the embodiments of the present application has at least the following technical effects: the bag body can be applied to scenes requiring different capacities or heights.

[0019] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0020] Additional aspects and advantages of the present application will become apparent from the following description of the embodiments with reference to the drawings, in which:

[0021] Figure 1 Structure schematic diagram of the bag body adopting the first folding mode;

[0022] Figure 2Fig. 1 is a side view of the structure of the foldable multi-purpose bag according to the first folding method;

[0023] Figure 3 Fig. 2 is a bottom view of the structure of the foldable multi-purpose bag according to the first folding method;

[0024] Figure 4 Fig. 3 is a side view of the structure of the foldable multi-purpose bag according to the second folding method;

[0025] Figure 5 Fig. 4 is a side view of the structure of the foldable multi-purpose bag according to the third folding method after pressing the side bottom edge;

[0026] Figure 6 Fig. 5 is a side view of the structure of the foldable multi-purpose bag according to the third folding method after folding at a certain angle;

[0027] Figure 7 Fig. 6 is a side view of the structure of the foldable multi-purpose bag according to the third folding method after folding at another angle;

[0028] Figure 8 Fig. 7 is a side view of the structure of the foldable multi-purpose bag according to the fourth folding method;

[0029] Figure 9 Fig. 8 is a side view of the structure of the foldable multi-purpose bag according to the fifth folding method;

[0030] Figure 10 Fig. 9 is a side view of the structure of the foldable multi-purpose bag according to the sixth folding method;

[0031] Figure 11 Fig. 10 is a side view of the structure of the foldable multi-purpose bag according to the seventh folding method;

[0032] Figure 12 Fig. 11 is a side view of the structure of the foldable multi-purpose bag according to the eighth folding method;

[0033] Figure 13 Fig. 12 is a side view of the structure of the foldable multi-purpose bag after turning up the handle on the bag body;

[0034] Figure 14 Fig. 13 is a side view of the structure of the foldable multi-purpose bag after turning down the handle on the bag body;

[0035] Figure 15 Fig. 14 is a side view of the structure of the foldable multi-purpose bag according to the first folding method;

[0036] Figure 16 Fig. 15 is a side view of the structure of the foldable multi-purpose bag according to the second folding method;

[0037] Figure 17 Fig. 16 is a side view of the structure of the foldable multi-purpose bag according to the third folding method;

[0038] Figure 18Structure diagram of the foldable multi-purpose bag according to the second folding method;

[0039] Figure 19 Structure diagram of the side surface and the bottom surface after pressing the side surface bottom edge according to the third folding method.

[0040] Reference signs: bag body 100, handle 101, opening 110, bottom surface 120, main surface 130, first diagonal folding line 131, turning surface 132, first folding part 133, second folding part 134, side surface 140, magnetic member 141, first folding line 200, second folding line 300, X-shaped folding line 400, pressing area 401, vertical folding line 500, horizontal straight folding line 600, first herringbone-shaped diagonal folding line 700, second herringbone-shaped diagonal folding line 800, third herringbone-shaped diagonal folding line 900. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0042] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0043] In the description of the present application, the meaning of multiple is more than two, greater than, less than, more than, etc. is not included in the number, above, below, etc. is included in the number. If it is described that the first, the second is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0044] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0045] Reference Figure 1As shown, the foldable multi-purpose storage bag according to the first embodiment of the present application comprises a bag body 100 in the shape of a rectangle, the bag body 100 comprising an opening 110, a bottom surface 120 arranged away from the opening 110, two main surfaces 130 and two side surfaces 140; the bag body 100 is provided with a first fold line 200 and a second fold line 300 arranged in a spaced-apart manner in the up-down direction, and the main surfaces 130 and the side surfaces 140 are all provided with the first fold line 200 and the second fold line 300; the left and right ends of the first fold line 200 on the side surface 140 and the left and right ends of the bottom of the side surface 140 are provided with an X-shaped fold line 400, and the X-shaped fold line 400 intersects with the second fold line 300.

[0046] For example, the bag body 100 is in the shape of a rectangle with an upper opening 110 structure, and the bag body 100 is made of a single material or a composite material with a certain degree of hardness and foldability. Specifically, the bag body 100 is made of a paper material, or the bag body 100 comprises a first soft layer and a second soft layer arranged in a sequential manner in the up-down direction, or the bag body 100 comprises a first soft layer, a first hard layer and a second soft layer arranged in a sequential manner in the up-down direction; the first fold line 200 and the second fold line 300 are both arranged along the side wall of the bag body 100, and the first fold line 200 and the second fold line 300 are both parallel to the bottom surface 120, with the first fold line 200 being located above the second fold line 300; in this way, the two main surfaces 130 and the two side surfaces 140 are both provided with the first fold line 200 and the second fold line 300, i.e., the bag body 100 is provided with two rectangular fold lines arranged in a spaced-apart manner in the up-down direction; the two side surfaces 140 are both provided with the X-shaped fold line 400, and the side surface 140 in front of the bag body 100 is taken as an example, the first fold line 200 of the side surface 140 is provided with a rectangular enclosed area between the left and right sides and the bottom of the side surface 140, and the X-shaped fold line 400 is arranged between the four corners of the enclosed area, and the X-shaped fold line 400 is composed of two straight lines, and the intersection point of the two straight lines is located on the second fold line 300.

[0047] As shown in the drawings, Figure 1 When the bag body 100 does not need to have a large capacity or a high height, the first folding method of the foldable multi-purpose storage bag is as follows:

[0048] When the bag body 100 does not need to have a large capacity or a high height, the first folding method of the foldable multi-purpose storage bag is as follows:

[0049] As shown in the drawings, Figure 1 , 17As shown, S1: press the center position of the X-shaped fold line 400, so that the center position of the X-shaped fold line 400 moves to the inside of the foldable multi-purpose bag, that is, the user simultaneously presses the center position of the X-shaped fold line 400 of the two side surfaces 140 (the intersection point of the two straight lines), so that the center positions of the X-shaped fold lines 400 of the two side surfaces 140 are close to each other, for example, the front side surface 140: press the center position of the front X-shaped fold line 400 in the rear direction to make the center position of the front X-shaped fold line 400 move backward, and the rear side surface 140: press the center position of the rear X-shaped fold line 400 in the front direction to make the center position of the rear X-shaped fold line 400 move forward, and then make the two close to each other;

[0050] As shown in the figure, Figure 2 S2, make the first fold line 200 abut against the edge of the bottom surface 120, and make the second fold lines 300 of the two main surfaces 130 close to each other; that is, make the bag body 100 above the first fold line 200 move downward, make the bag body 100 below the first fold line 200 fold along the X-shaped fold line 400, make the main surface 130 between the first fold line 200 and the second fold line 300 fold inward, and make the main surface 130 between the second fold line 300 and the edge of the bottom surface 120 fold inward, first form the shape of " > " or " < ", then stack the main surface 130 between the first fold line 200 and the second fold line 300 on the main surface 130 between the second fold line 300 and the edge of the bottom surface 120, fold the main surface 130 between the second fold line 300 and the edge of the bottom surface 120 on the bottom surface 120, and then fold the bag body 100 below the first fold line 200 into a plate shape, thereby reducing the height or capacity of the bag body 100.

[0051] The first fold line 200, the second fold line 300 and the X-shaped fold line 400 are provided to enable the bag body 100 below the first fold line 200 to be folded into a plate shape, thereby enabling the height of the bag body 100 to be reduced, and enabling the bag body 100 to be applicable to scenes requiring different capacities or heights.

[0052] In some embodiments of the present application, as shown in the figure, Figure 1 , 3 The side surface 140 is provided with a vertical fold line 500 extending from the intersection of the X-shaped fold line 400 and the second fold line 300 to the low end of the side surface 140, and the bottom surface 120 is provided with a horizontal fold line 600 extending from one side surface 140 to the other side surface 140.

[0053] The second folding method of the foldable multi-purpose bag is as follows:

[0054] On the basis of the above S2, S3 is further provided, which is that the horizontal fold line 600 divides the bottom surface 120 into two parts on the left and right sides, and the two parts of the bottom surface 120 are turned downward along the horizontal fold line 600 and the vertical fold line 500.

[0055] As shown in Figure 1 , the main surface 130 between the second fold line 300 and the edge of the bottom surface 120 is defined as a turning surface 132, and there are two turning surfaces 132 for two main surfaces 130, and further provided with a horizontal straight fold line 600 and a vertical fold line 500, as shown in Figure 3 、 4 , the horizontal straight fold line 600 divides the bottom surface 120 into two parts, and after the height of the bag body 100 is reduced, one of the turning surfaces 132 is folded on one part of the bottom surface 120 to form a first folding part 133, and the other turning surface 132 is folded on the other part of the bottom surface 120 to form a second folding part 134, and the horizontal straight fold line 600 and the vertical fold line 500 are stacked together, when the bag body 100 needs to be inserted into the gap, the first folding part 133 and the second folding part 134 are turned down along the horizontal straight fold line 600 and the vertical fold line 500, and the first folding part 133 and the second folding part 134 are close to each other to form a structure similar to a plug, and then the bag body 100 below the first fold line 200 forms a "T" shape, so as to be inserted into the sofa gap or other gaps, thereby improving the application scenarios of the storage bag.

[0056] In a further embodiment of the present application, as shown in Figure 3 , the bottom surface 120 is provided with two first herringbone fold lines 700, one end of the first herringbone fold line 700 is connected to the horizontal straight fold line 600, and the other end of the two first herringbone fold lines 700 is connected to the two corners of the front end of the bottom surface 120 and the two corners of the rear end of the bottom surface 120 respectively.

[0057] The third folding method of the foldable multi-purpose storage bag is:

[0058] As shown in Figure 5 、 19 , S10, press the bottom edge of the side surface 140 towards the inside of the bag body 100, so that the pressing area 401 enclosed between the X-shaped fold line 400 and the first herringbone fold line 700 is recessed towards the inside of the bag body 100 along the X-shaped fold line 400 and the first herringbone fold line 700, and the bottom surface 120 is protruded downwards of the bag body 100 along the horizontal straight fold line 600;

[0059] As shown in Figure 5 、 19 , S11, press the center position of the X-shaped fold line 400 towards the inside of the bag body 100, so that the side surfaces 140 on the left and right sides of the vertical fold line 500 are close to each other, that is, after pressing, the upper half of the X-shaped fold line 400 and the vertical fold line 500 divide the side surface 140 into two parts and form a "Y" shaped crease on the side surface 140, as shown in Figure 6 、 7As shown, the sides 140 of the two parts can be brought closer to each other, and in cooperation with the bottom surface 120 protruding downward, a longer plate body is formed by the bag body 100 below the first fold line 200, so that the bag body 100 can be better inserted into the gap of the car seat or the sofa.

[0060] In some embodiments of the present invention, as Figure 1 shown, the vertical fold line 500 extends from the top end to the bottom end of the side 140.

[0061] The fourth folding method of the foldable multi-purpose storage bag is:

[0062] As Figure 1 、 8 shown, S20, press the central position of the X-shaped fold line 400 and the vertical fold line 500 above the second fold line 300 simultaneously in the direction of the inside of the bag body 100.

[0063] As Figure 1 shown, the lower half of the X-shaped fold line 400 and the vertical fold line 500 above the second fold line 300 form an inverted "Y" - shaped fold line, so that the main surface 130 between the second fold line 300 and the edge of the bottom surface 120 can be folded inward onto the bottom surface 120, and the vertical fold line 500 above the second fold line 300 can divide the side 140 into two parts, and the two parts of the side 140 can be brought closer to each other, so that the bag body 100 forms a "丄" - shaped shape after folding, so that the bag body 100 can stand on the tabletop, and the upper opening 110 of the bag body 100 can be closed and sealed after the bag body 100 is filled with items. Specifically, the bottom surface 120 can be provided with an adsorption attachment, and then the bag body 100 can be fixed on the vehicle surface or other places, and the adsorption attachment can be a magnet.

[0064] In a further embodiment of the present invention, as Figure 1 shown, a second chevron - shaped oblique fold line 800 is provided between the top end of the vertical fold line 500 and the left and right ends of the first fold line 200 on the side 140.

[0065] The fifth folding method of the foldable multi-purpose storage bag is:

[0066] Based on the above S2, there is also S4 or S5, as Figure 9 shown, S4 is to press the top of the vertical fold line 500 in the direction of the inside of the bag body 100, so that the tops of the two main surfaces 130 are folded downward along the first fold line 200; S5 is to press the top of the vertical fold line 500 in the direction of the outside of the bag body 100, so that the tops of the two main surfaces 130 are folded downward along the first fold line 200.

[0067] As Figure 9As shown, S4 and S5 can also fold the bag 100 above the first fold line 200, so that the entire bag 100 is folded into a board shape, and the folded bag 100 can be placed on the storage box in the car and the gap between the sofas, thereby not occupying space and being convenient to carry.

[0068] As shown in Figure 1 , 10 The sixth folding method of the foldable multi-purpose bag is as follows:

[0069] S30, press the center position of the X-shaped fold line 400 to move the center position of the X-shaped fold line 400 to the outside of the foldable multi-purpose bag;

[0070] S31, press the top of the vertical fold line 500 to the outside of the bag 100, so that the top of the two main surfaces 130 is folded downward along the first fold line 200;

[0071] S32, fold the main surface 130 between the first fold line 200 and the second fold line 300 on the main surface 130 between the second fold line 300 and the edge of the bottom surface 120;

[0072] Such folding method makes the bag fold into a boat shape.

[0073] In further embodiments of the present application, as shown in Figure 11 , 12 The top end of the vertical fold line 500 and the left and right ends of the second fold line 300 on the side surface 140 are provided with a third herringbone oblique fold line 900, and the connection between the side edge of the main surface 130 and the second fold line 300 and the top end of the main surface 130 have a first oblique fold line 131.

[0074] As shown in Figure 11 The seventh folding method of the foldable multi-purpose bag is as follows:

[0075] S40, press the center position of the X-shaped fold line 400 to the inside of the bag 100, and press the top of the vertical fold line 500 to the outside of the bag 100, so that the shape can be changed according to the shape of the articles contained in the bag 100.

[0076] As shown in Figure 12 The eighth folding method of the foldable multi-purpose bag is as follows:

[0077] S50, press the center position of the X-shaped fold line 400 to the inside of the bag 100;

[0078] S51, fold the side surface 140 between the third herringbone oblique fold line 900 together along the vertical fold line 500.

[0079] The foldable multi-purpose bag has other folding methods, which can be folded according to the shape of the article and the folding line.

[0080] The foldable multi-purpose bag has more than eight folding methods, so that the bag can be used in different scenes, and the practicality is high.

[0081] As shown in Figure 13 , 14 , specifically, the top of the two main surfaces 130 and / or the top of the two side surfaces 140 are provided with a handle 101 that can be flipped up and down, and magnets are arranged on the handle 101 in an up-down interval, so that when the handle 101 is flipped up, the bag body 100 can be used as a shopping bag, and when the handle 101 is flipped down, it can hold a garbage bag.

[0082] The bag body 100 is provided with a plurality of magnetic members 141, which are used to keep the bag body 100 in a folded state after folding. The magnetic members 141 are magnets, and the shape of the magnetic members 141 can be circular, square or other shapes.

[0083] As shown in Figure 1 , the first arrangement of the magnetic members 141: the side surface 140 is provided with two first magnets symmetrically distributed in the left-right direction, and the two first magnets are respectively located on the left side and the right side of the second herringbone diagonal folding line 800; the side surface 140 is provided with two second magnets symmetrically distributed in the left-right direction and two third magnets symmetrically distributed in the left-right direction, the two second magnets are located between the lower end of the second folding line 300 and the X-shaped folding line 400, and the two third magnets are located between the lower end of the first folding line 200 and the X-shaped folding line 400; as shown in Figure 3 , the bottom surface 120 is provided with four fourth magnets, and the four fourth magnets are respectively located on the left and right sides of the horizontal straight folding line 600;

[0084] For example, when the bag body 100 is folded in the third folding method, the two fourth magnets are attracted to each other, and the two second magnets are attracted to each other, thereby ensuring the folding state;

[0085] For example, when the bag body 100 is folded in the fourth folding method, the two first magnets located on the left side and the right side of the second herringbone diagonal folding line 800 are attracted to each other, and the two third magnets are attracted to each other, thereby folding the left side and the right side of the side surface 140 together, so that the bag body 100 maintains an inverted "T" shape.

[0086] As shown in Figure 16 , the second arrangement of the magnetic members 141: the main surface 130 is provided with three fifth magnets arranged in sequence in the up-down direction, and the three fifth magnets are respectively located above the first folding line 200, above the second folding line 300 and below the second folding line 300; the bottom surface 120 is provided with two sixth magnets, and the two sixth magnets are respectively located on the left and right sides of the horizontal straight folding line 600 and between the two first herringbone diagonal folding lines 700.

[0087] For example, when the bag 100 is folded in the first folding mode, the fifth magnet above the second fold line 300, the fifth magnet below the second fold line 300 and the sixth magnet are attracted to each other, thereby keeping the bag in the first state.

[0088] According to some embodiments of the present application, as shown in Figure 15 L1 is the height between the second fold line 300 and the bottom surface 120, L2 is the height between the first fold line 200 and the second fold line 300, L3 is the height between the upper end surface of the bag 100 and the first fold line 200, L4 is the width of the bottom surface 120, L1=L2=L3, L1+L2+L3=1.5L4. Such a proportional relationship is better for folding the bag 100.

[0089] According to some embodiments of the present application, as shown in Figure 1 The angle a between the first oblique fold line 131 and the side edge of the main surface 130 is 60°-82°, so that the bag 100 can be adapted to different shapes of objects.

[0090] The folding method of the foldable multi-purpose object bag according to the second aspect of the present application adopts the foldable multi-purpose object bag according to the first aspect of the present application.

[0091] The folding method comprises the following steps:

[0092] S1, pressing the center position of the X-shaped fold line 400 to move the center position of the X-shaped fold line 400 to the inside of the foldable multi-purpose object bag;

[0093] S2, abutting the edge of the first fold line 200 and the bottom surface 120 to make the second fold lines 300 of the two main surfaces 130 close to each other.

[0094] In the description of the present specification, the description of the terms "some embodiments" or "it is conceivable that" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0095] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A foldable multi-purpose bag, characterized by, The utility model relates to a foldable multi-purpose storage bag, which comprises: a bag body in a rectangular shape, the bag body comprising an opening, a bottom surface arranged away from the opening, two major surfaces and two side surfaces; the bag body is provided with a first fold line and a second fold line arranged at intervals in the up-down direction, and the major surfaces and the side surfaces are all provided with the first fold line and the second fold line; X-shaped fold lines are arranged between the left and right ends of the first fold line on the side surface and the left and right ends of the bottom of the side surface, and the X-shaped fold lines intersect on the second fold line; the side surface is provided with a vertical fold line extending from the intersection of the X-shaped fold line and the second fold line to the lower end of the side surface, and the bottom surface is provided with a horizontal fold line extending from one of the side surfaces to the other side surface; the bottom surface is provided with two first herringbone-shaped oblique fold lines, one end of the first herringbone-shaped oblique fold lines is connected to the horizontal fold line, and the other end of the two first herringbone-shaped oblique fold lines is connected to two corners of the front end of the bottom surface and two corners of the rear end of the bottom surface, respectively; the bag body is provided with a plurality of magnetic members, and the magnetic members are used to keep the bag body in a folded state after folding; the vertical fold line extends from the top end of the side surface to the bottom end; a second herringbone-shaped oblique fold line is arranged between the top end of the vertical fold line and the left and right ends of the first fold line on the side surface; a third herringbone-shaped oblique fold line is arranged between the top end of the vertical fold line and the left and right ends of the second fold line on the side surface, and the side edge of the major surface and the intersection of the second fold line have a first oblique fold line between the top end of the major surface; the side surface is provided with two first magnets symmetrically distributed in the left-right direction, and the two first magnets are located on the left side and the right side of the second herringbone-shaped oblique fold line, respectively; the side surface is provided with two second magnets symmetrically distributed in the left-right direction and two third magnets symmetrically distributed in the left-right direction, and the two second magnets are located between the lower end of the second fold line and the X-shaped fold line, and the two third magnets are located between the lower end of the first fold line and the X-shaped fold line; the bottom surface is provided with four fourth magnets, and the four fourth magnets are located on the left and right sides of the horizontal fold line, respectively.

2. The collapsible multi-purpose storage bag of claim 1, wherein: The angle between the first oblique fold line and the side edge of the major surface is alpha, and alpha is 60°-82°.

3. The collapsible multi-purpose storage bag of claim 1, wherein: The height between the second fold line and the bottom surface is defined as L1, the height between the first fold line and the second fold line is defined as L2, the height between the upper end surface of the bag body and the first fold line is defined as L3, and the width of the bottom surface is defined as L4, L1=L2=L3, L1+L2+L3=1.5L4.

4. A folding method of a foldable multi-purpose storage bag, characterized by, The foldable multi-purpose storage bag according to any one of claims 1-3 is adopted; the folding method comprises the following steps: S1, pressing the center position of the X-shaped fold line to move the center position of the X-shaped fold line to the inside of the foldable multi-purpose storage bag; S2, making the first fold line abut against the edge of the bottom surface to make the second fold lines of the two major surfaces close to each other.

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