Bag with variable size
By employing PU artificial leather, zippers, snap fasteners, and metal rings, the bag achieves variable dimensions, solving the problem of unsuitable size for different usage scenarios and improving durability, comfort, and aesthetics.
Patent Information
- Application Number
- CN202422745229.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-11-11
AI Technical Summary
The current bags have a fixed size, which cannot be flexibly adjusted for different usage scenarios, resulting in an unsuitable size in some scenarios, affecting the user experience and appearance.
Made of PU artificial leather, the bag features a combination of zippers, snap fasteners, and metal rings to achieve variable dimensions. The zipper closure, snap fasteners, and metal ring connection allow for various carrying methods and size adjustments.
The bag's durability and comfort have been improved, and it offers a variety of sizes for easy and quick changes in carrying methods, enhancing its flexibility and aesthetics.
Smart Images

Figure CN223773273U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a bag design, it is a variable size bag. BACKGROUND
[0002] The size of the bag is fixed at present, and different size bags need to be replaced in different use scenarios, such as the size of school books is close to A4 size and cannot be put into a small bag for daily commuting, and a large bag for commuting banquet needs to carry A4 size, and the image perception is too bloated and cumbersome. SUMMARY
[0003] (1) material selection: PU artificial leather, 2 appropriate size zippers, 18 groups of 15mm diameter plastic snap fasteners, 3 groups of 2 each, a total of 6 metal buckles, and 2 artificial leather straps.
[0004] (2) structure design: the upper and lower edges of the bag are provided with zippers, which facilitates the storage and retrieval of articles after size conversion; the side edges of the bag are provided with snap fasteners at intervals, with a center distance of 2cm, which facilitates the alignment and fastening of the snap fasteners after size conversion, and articles are not easy to fall off the side edges; the four corners and the midpoint of the long edge of the bag are fixed with metal rings, which facilitates the fixation of the straps in different size use scenarios.
[0005] Beneficial effects: the bag of the present application improves durability, increases comfort, provides multiple size options, and can quickly change the size and carrying method of the bag.
[0006] A variable size bag, a load-bearing, durable and comfortable pocket composed of two pieces of PU artificial leather, for storing articles; two groups of zippers for sealing the pocket to prevent articles from falling out; 18 groups of 15mm diameter snap fasteners. The holes are arranged according to the rule of reserving 1cm on each of the four sides and punching a hole every 2cm on the two long edges, the snap fasteners are arranged by fixing them on one side from the bottom up, and 9 snap fasteners are fixed at intervals on one side according to the type of snap fastener, then the same operation is performed from top to bottom, a total of nine pairs of eighteen snap fasteners on one side, the left side is mother, daughter, mother, daughter, mother, daughter, mother, daughter, mother, daughter, mother, daughter, mother, daughter, mother, daughter, mother, daughter, from top to bottom, leaving one hole, and the right side is son, mother, son, mother, son, mother, son, mother, son, mother, son, mother, son, mother, son, mother, son, mother, from top to bottom, leaving one hole. Used for sealing the side edges of the bag to prevent articles from falling out and adjusting the size; 3 groups of a total of 6 metal ring buckles with a diameter of 2.5cm, fixed at a distance of 1cm from the long edge and the short edge, and at a distance of 1cm from the long edge. BRIEF DESCRIPTION OF DRAWINGS
[0007] Figure 1 Product combination drawing, product actual combination drawing, containing all components of the product.
[0008] Figure 2 Product body shape drawing, product bag body part design effect drawing.
[0009] Figure 3 Product front view, product bag body design front view.
[0010] Figure 4 Product rear view, product bag body rear view.
[0011] Figure 5 Product side view, product bag body side view.
[0012] Figure 6 Product bottom view, product bag body bottom view.
[0013] Figure 7 Product top view, product bag body top view.
[0014] Figure 8 Product isometric view, product bag body top view.
[0015] Figure 9 Product body size drawing, product bag body size cutting drawing.
[0016] Figure 10 Product snap fastener fixing detail drawing, bag body long edge fixing snap fastener arrangement drawing.
[0017] Figure 11 Product full size drawing, size 280mm*420mm, suitable for A4 horizontal version ring loaded file.
[0018] Figure 12 Product first gear adjustment drawing, size 280mm*380mm, suitable for A4 horizontal version ring loaded file and separately placed pen.
[0019] Figure 13 Product second gear adjustment drawing, size 280mm*360mm, suitable for A4 horizontal version ring loaded file and separately placed pen and ruler.
[0020] Figure 14 Product third gear adjustment drawing, size 280mm*340mm, suitable for A4 horizontal version ring loaded file and separately placed pen, ruler, certificate, etc.
[0021] Figure 15 Product fourth gear adjustment drawing, size 280mm*320mm, suitable for surface notebook computer and separately placed power cord, A4 book and separately placed sundries.
[0022] Figure 16 Product fifth gear adjustment drawing, size 280mm*300mm, suitable for A4 file and separately placed sundries.
[0023] Figure 17 Product sixth gear adjustment drawing, size 280mm*280mm, suitable for less than A4 album notebook and separately placed sundries, etc.
[0024] Figure 18 Product real seven adjustment chart, size 280mm*260mm, suitable for less than A4 album hand account and single placement of sundries, etc.
[0025] Figure 19 Product real eight adjustment chart, size 280mm*240mm, suitable for less than A4 album hand account and single placement of sundries, etc.
[0026] Figure 20 Product real nine adjustment chart, size 280mm*210mm, general travel bag, suitable for A5 size notebook and file.
[0027] Figure 21 Product real ten adjustment chart, size 280mm*100mm, general pen bag, suitable for commonly used stationery. DETAILED DESCRIPTION
[0028] Production process:
[0029] (1) The front of the bag is made of PU artificial leather with a size of 280mm*420mm, with a reserved 1cm around, and a hole is punched every 2cm on both long edges to reserve space for the snap and ring.
[0030] (2) The back of the bag is made in the same way as the front of the bag, but 5 to 10 cm of PU artificial leather is reserved at the top of the bag for the cover.
[0031] (3) The zipper of the bag is fixed at the reserved 1cm on the upper and lower edges, and the direction of the zipper should be opposite.
[0032] (4) The snap arrangement of the bag: single-sidedly fix the snap from the bottom up, fix 9 snaps according to the type, and then do the same from top to bottom, a total of 18 snaps on one side; the other side uses repulsion type arrangement.
[0033] (5) The fixing of the shoulder strap of the bag: fix the six ring buckles at a distance of 1cm from the long edge and the short edge, 1cm from the long edge, and then fix the bag strap on the ring buckle. Adjust the position and length of the bag strap according to the use requirements.
[0034] Specific use method:
[0035] (1) Determine the use scenario.
[0036] (2) Fold the backpack as needed, and press the snap tightly according to the alignment.
[0037] (3) Place the items as needed.
[0038] (4) Choose the right position of the bag strap and adjust the length.
Claims
1. A variable-size bag, characterized in that, include: (1) A load-bearing, durable, and comfortable pocket made of two pieces of PU artificial leather for storing items; (2) Two sets of zippers for closing the pocket to prevent items from falling out; (3) 18 sets of snap fasteners, arranged in a regular pattern, are used to seal the sides of the bag to prevent items from falling out and for size adjustments; (4) Three sets of buckles are used to connect the bag straps, so that the bag can be carried in multiple ways, such as on the shoulder, over the shoulder, or crossbody.
2. A variable-size bag according to claim 1, characterized in that, The material used for the size adjustment is a 15mm diameter snap fastener.
3. A variable-size bag according to claim 1, characterized in that, The three sets of buckles consist of six buckles with a diameter of 2.5cm, which are fixed at the center line at a distance of 1cm from the long side and the short side, and at a distance of 1cm from the long side.
4. A variable-size bag according to claim 1, characterized in that... 18 sets of male and female buckles are arranged in a regular pattern. The holes are pre-drilled with a 1cm hole on each of the four sides and a hole every 2cm on the two long sides.
5. A variable-size bag according to claim 1, characterized in that, The arrangement of the snap fasteners is as follows: the snap fasteners are fixed from the bottom edge upwards on one side, with 9 fasteners fixed at intervals on one side according to the type of snap fasteners. Then the same operation is repeated from top to bottom, for a total of nine pairs and eighteen fasteners on one side. On the left side, from top to bottom, the fasteners are: mother-child, mother-child, mother-child, mother-child, mother-child, mother-child, mother-child, with one hole left empty, and then mother-child, mother-child, mother-child, mother-child, mother-child, mother-child. On the right side, from top to bottom, the fasteners are: mother-child, ... with one hole left empty, and then mother-child, mother-child, mother-child, mother-child, mother-child, mother-child, mother-child.