Rivetless luggage structure and processing technology thereof
By using a rivetless bag structure, and utilizing the tenon and mortise joints of the convex and concave frames, as well as steel needle stamping, the problem of loose and rusted rivets in existing bags has been solved, achieving more efficient production and more stable connections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 广州市聚旺五金制品有限公司
- Filing Date
- 2026-04-03
- Publication Date
- 2026-05-29
AI Technical Summary
Existing luggage uses exposed fasteners such as rivets, screws, and rolled rubber plates, which can lead to loosening and corrosion, affecting aesthetics and airtightness. The production process is also cumbersome and costly.
The bag adopts a rivetless structure, using tenons and mortises between the convex and concave frames, combined with sealing strips and hook-shaped fulcrums, to achieve a snap-fit connection between the lid and the bottom of the bag, and using steel needle stamping to form a stable connection structure.
It eliminates the use of rivets, simplifies the production process, improves production efficiency and connection strength, reduces costs, and enhances sealing performance.
Smart Images
Figure CN122096537A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of luggage technology, specifically relating to a rivetless luggage structure and its processing technology. Background Technology
[0002] For existing bags such as suitcases and backpacks, the stability of the frame structure is crucial. Currently, one of the main methods for connecting the frame and plastic panels in bags is the use of exposed fasteners such as rivets, screws, and rolled rubber plates. While this connection method is widely used, exposed fasteners are susceptible to environmental influences, leading to loosening and corrosion. This not only affects the overall aesthetics of the bag but also compromises its airtightness and protective properties. Inside the bag, the protruding ends of the rivets can also scratch the lining or stored items. Furthermore, bag production typically involves multiple steps such as positioning, drilling, and assembly, making the process relatively complex and reliant on manual skills. This increases production costs and hinders further improvements in production efficiency.
[0003] Therefore, it is necessary to design a rivetless bag structure. Summary of the Invention
[0004] To address the aforementioned problems in existing technologies, this solution provides a rivetless bag structure and its processing technology.
[0005] The technical solution adopted in this invention is as follows: A rivetless bag structure includes a lid, a bottom, and a side frame; The edge frame includes a first connecting part and a second connecting part; the first connecting part and the second connecting part are U-shaped or vertically hooked; the connection openings of the first connecting part and the second connecting part face opposite directions; the first connecting part is connected to the edge of the lid by a steel pin embossing, and the second connecting part is connected to the edge of the bottom of the box by a steel pin embossing. The edge frame is a split structure consisting of a concave frame and a convex frame: the first connecting part and the second connecting part are located on the convex frame and the concave frame respectively; a tenon is provided on the side of the convex frame facing the concave frame, and a mortise is provided on the concave frame to match the tenon; the cross-section of the tenon is triangular, trapezoidal or hook-shaped.
[0006] Optionally: the tenon groove is provided with a barb groove on the groove wall, and the tenon is provided with a barb body on the side wall; when the convex frame and the concave frame are connected, the barb groove and the barb body cooperate with each other to prevent them from coming out. Optionally: the tenon is directly connected to the first connecting part; Alternatively, the tenon and the first connecting part are indirectly connected by a sealing strip mounting part and a receiving part, respectively.
[0007] Optional: The tenon and the second connecting part are directly connected; Alternatively, the mortise and tenon groove is indirectly connected to the second connecting part through an arc part.
[0008] Optionally: The receiving part is arc-shaped, and a hook-shaped fulcrum or a reinforcing rib is provided on the inner arc side of the receiving part. The hook-shaped fulcrum is in the shape of a hooked bend and is used as a fulcrum for connecting with an external accessory.
[0009] Optionally: On one side of the first connecting part located inside the box cover, there is a first side groove part with a lateral opening; on one side of the second connecting part located inside the box bottom, there is a second side groove part with a lateral opening; the first side groove part and the second side groove part are used as fulcrums for connecting with the lock assembly.
[0010] Optionally: The second side groove part and the first side groove part are in the shape of a C-shaped or a horizontally folded inner hooked shape with barbs at the notch of the groove.
[0011] Optionally: When the second side groove part is connected to the arc part, the surfaces of the two are continuous and interact with each other; or / and, when the first side groove part is connected to the receiving part, the surfaces of the two are continuous and interact with each other.
[0012] Optionally: The seal strip installation part is in the shape of an L or a C.
[0013] A processing technology for a rivetless luggage structure includes the following steps: S1: Use an extrusion molding process to process the profile for making the edge frame. S2: Cut and bend the profile to form the edge frame. S3: Insert the edge of the box cover into the first connecting part of the edge frame, and use a steel needle to emboss the side of the first connecting part facing the inside of the box cover; insert the edge of the box bottom into the second connecting part of the edge frame, and use a steel needle to emboss the side of the second connecting part facing the inside of the box bottom; S4: Install external accessories on the edge frame. The external accessories include a lock assembly and a hinge.
[0014] Optionally: A lock assembly is provided on the luggage structure; the lock assembly includes a lock body and a lock panel; an installation hole for installing the lock assembly is provided on the side of the box cover; the lock panel is arranged outside the installation hole, and the lock body is arranged inside the installation hole and is connected to the lock panel by screws.
[0015] Optionally: A horizontally movable lock hook is provided on the lock body, and a fixed lock catch is fixedly installed on the second side groove part; the lock hook can hook the fixed lock catch to prevent the box cover from being opened.
[0016] Optionally: A slider is provided in the first side groove part, and the slider is connected to the lock hook and is used for guiding during the sliding of the lock hook.
[0017] Optionally: the side wall of the first connecting part is pierced by a steel needle to create a first protrusion, which is then inserted into the box cover, so that the first protrusion is embedded in the side wall of the box cover; the side wall of the second connecting part is pierced by a steel needle to create a second protrusion, which is then inserted into the bottom of the box, and the second protrusion can be embedded in the side wall of the bottom of the box.
[0018] The beneficial effects of this invention are as follows: In this solution, the method of snapping and bonding the bottom and lid of the box with the corresponding edge frame allows the bottom and lid to be connected to the frame without rivets. At the same time, it provides a foundation for the installation of hinges and locks, avoids the use of rivets, reduces the positioning, drilling, and installation steps required for rivet installation during production, saves manpower and costs, and improves production efficiency. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this scheme or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0020] Figure 1 This is a diagram of the first type of convex and concave frame mating structure; Figure 2 This is a structural diagram of the rivetless bag structure in this design; Figure 3 This is an internal structural diagram of the rivetless bag structure in this design; Figure 4 yes Figure 3 A schematic diagram of the structure of part A in the middle; Figure 5 yes Figure 3 A schematic diagram of the structure of part B in the middle; Figure 6 This is a diagram of the second type of convex and concave frame mating structure; Figure 7 This is a diagram of the third type of convex and concave frame mating structure; Figure 8 This is a diagram of the fourth type of convex and concave frame mating structure; Figure 9 This is a diagram of the fifth type of convex and concave frame mating structure; Figure 10 This is a diagram of the sixth type of convex and concave frame mating structure; Figure 11 (a)-(d) are structural diagrams of bags with different edge frames; Figure 12 This is a structural diagram of the bending mechanism; Figure 13 This is a structural diagram showing the fit between the constant pressure head seat and the dynamic pressure head seat; Figure 14 yes Figure 13 The structural diagram of a local C region.
[0021] In the diagram: 1-Box lid; 11-Side panel; 12-Lid body; 2-Box bottom; 3-Lock assembly; 31-Lock body; 32-Lock hook; 33-Fixed lock buckle; 34-Slider; 4-Hinge; 5-Protruding frame; 51-First connecting part; 52-Receiving part; 53-First side groove; 54-Sealing strip mounting part; 55-Tongue; 56-First protrusion; 57-Barb; 58-Hook-shaped fulcrum; 6-Concave frame; 61-Second connecting part; 62-Tongue groove; 63-Second side groove; 6 4-Second protrusion; 65-Arc-shaped part; 66-Barb groove; 7-Steel needle embossing mechanism; 73-Moving pressure head; 74-Fixed pressure head; 75-Fixed pressure head seat; 76-Moving pressure head seat; 710-Cylinder mounting plate; 711-Imprinting hydraulic cylinder; 713-Transverse rail; 714-Top tongue; 715-Imprinting needle; 8-Bending mechanism; 81-Slide; 82-Slide table; 83-Bending hydraulic cylinder; 84-Moving mounting seat; 85-Moving bending head; 86-Fixed bending head; 87-Fixed mounting seat. Detailed Implementation
[0022] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this solution without creative effort are within the protection scope of this solution.
[0023] Example 1 like Figures 1 to 11 As shown, a rivetless bag structure includes components such as a lid 1, a bottom 2, and a side frame.
[0024] The edge frame includes a first connecting part 51 and a second connecting part 61; the first connecting part 51 and the second connecting part 61 are U-shaped or vertical hook-shaped; the connecting openings of the first connecting part 51 and the second connecting part 61 face opposite directions; the first connecting part 51 is connected to the edge of the box cover 1 by a steel needle stamping, and the second connecting part 61 is connected to the edge of the box bottom 2 by a steel needle stamping. The edge frame is a split structure consisting of a concave frame 6 and a convex frame 5: the first connecting part 51 and the second connecting part 61 are located on the convex frame 5 and the concave frame 6, respectively; a tenon 55 is provided on the side of the convex frame 5 facing the concave frame 6, and a mortise 62 matching the tenon 55 is provided on the concave frame 6; the cross-section of the tenon 55 is triangular, trapezoidal or hook-shaped.
[0025] The tenon 62 has a barb groove 66 on its groove wall, and the tenon 55 has a barb body 57 on its side wall. When the convex frame 5 and the concave frame 6 are connected, the barb groove 66 and the barb body 57 cooperate with each other to prevent them from coming off. The cooperation between the barb body 57 and the barb groove 66 not only improves the waterproofing at the tenon 62, but also improves the sealing effect when the lid 1 is closed.
[0026] The tenon 55 is directly connected to the first connecting portion 51; alternatively, the tenon 55 is indirectly connected to the first connecting portion 51 through the sealing strip mounting portion 54 and the receiving portion 52 successively. The mortise 62 is directly connected to the second connecting portion 61; alternatively, the mortise 62 is indirectly connected to the second connecting portion 61 through the arc portion 65. The sealing strip mounting portion 54 is in an L shape or a C shape.
[0027] The receiving portion 52 is arc-shaped, and a hook-shaped fulcrum 58 or a reinforcing rib may be provided on the inner arc side of the receiving portion 52. The hook-shaped fulcrum 58 is in a hooked shape and serves as a fulcrum for connecting with an external accessory.
[0028] On one side of the first connecting portion 51 located inside the lid 1, a first side groove portion 53 with a lateral opening is provided; on one side of the second connecting portion 61 located inside the bottom 2 of the case, a second side groove portion 63 with a lateral opening is provided; the first side groove portion 53 and the second side groove portion 63 serve as fulcrums for connecting with the lock assembly 3. The second side groove portion 63 and the first side groove portion 53 are in a C shape with barbs at the notch or a shape of a horizontal fold inner hook. When the second side groove portion 63 is connected to the arc portion 65, their surfaces are continuous and联动; or / and, when the first side groove portion 53 is connected to the receiving portion 52, their surfaces are continuous and联动. Thus, after installing an external accessory on the side groove portion, a prestress can be generated in the corresponding receiving portion 52 or the receiving portion 52, so that the movement gap between the tenon 55 and the mortise 62 is smaller and more stable, thereby reducing the probability of the tenon 55 and the mortise 62 falling off after connection.
[0029] One side of the luggage structure connects the convex frame 5 and the concave frame 6 through the hinge 4, thereby realizing the hinge connection between the lid 1 and the bottom 2 of the case. A lock assembly 3 is provided on one side of the luggage structure away from the hinge 4.
[0030] The lock assembly 3 includes a lock body 31 and a lock panel; an installation hole for installing the lock assembly 3 is provided on the side of the lid 1; the lock panel is arranged outside the installation hole, and the lock body 31 is arranged inside the installation hole and is connected to the lock panel by screws. The lock body 31 and the lock panel cooperate to clamp the side wall of the lid 1, thereby realizing the rivet-free installation of the lock body 31 and the lock panel.
[0031] A horizontally movable lock hook 32 is provided on the lock body 31, and the moving direction of the lock hook 32 is perpendicular to the opening direction of the lid 1. A fixed lock catch 33 is fixedly installed on the second side groove portion 63; the lock hook 32 can hook the fixed lock catch 33 to prevent the lid 1 from being opened. When moving the operating handle of the lock hook 32 at the lock panel, the lock hook 32 can be带动 to move. When the hook end of the lock hook 32 is inserted into the lock hole of the fixed lock catch 33, the lid 1 cannot be opened upward, and when the hook end of the lock hook 32 disengages from the lock hole of the fixed lock catch 33, the lid 1 can be opened upward.
[0032] A slider 34 is provided in the first side groove 53. The slider 34 is connected to the locking hook 32 and is used to guide the locking hook 32 during the sliding process.
[0033] The edge frame is a split structure, and the specific structure of the edge frame can be as follows: like Figure 6 As shown: the first connecting part 51 is U-shaped; the first side groove 53 is a U-shaped part with barbs and is connected to one side of the first connecting part 51; the tenon 55 has a triangular cross-section and is connected to the first connecting part 51 through the L-shaped sealing strip mounting part 54 and the arc-shaped receiving part 52. The second connecting part 61 is U-shaped, the second side groove has the same structure as the first side groove and is set on the side of the second connecting part 61; the tenon groove 62 is V-shaped and is directly connected to the second connecting part 61. Barb grooves 66 are provided on the groove walls on both sides of the tenon groove 62, and barb bodies 57 are provided on the side walls on both sides of the tenon 55; the barb grooves 66 and barb bodies 57 cooperate to prevent separation. A bag structure using this edge frame is shown below. Figure 11 As shown in (a) of the diagram.
[0034] like Figure 7 As shown: the first connecting part 51 is U-shaped; the first side groove 53 is a U-shaped part with barbs and is connected to one side of the first connecting part 51; the tenon 55 has a triangular cross-section and is directly connected to the first connecting part 51. The second connecting part 61 is U-shaped, the second side groove has the same structure as the first side groove and is located on the side of the second connecting part 61; the tenon groove 62 is V-shaped and is directly connected to the second connecting part 61. A barb groove 66 is provided on one side of the groove wall of the tenon groove 62, and a barb body 57 is provided on one side of the side wall of the tenon 55; the barb groove 66 and the barb body 57 cooperate to prevent separation. The bag structure using this edge frame is as follows. Figure 11 As shown in (b) of the diagram.
[0035] like Figure 8 As shown: the first connecting part 51 is U-shaped; the first side groove 53 is a U-shaped part with barbs and is connected to one side of the first connecting part 51; the tenon 55 has a triangular cross-section and is connected to the first connecting part 51 through the L-shaped sealing strip mounting part 54 and the arc-shaped receiving part 52; a hook-shaped support point 58 is provided on the inner arc side of the arc-shaped receiving part 52. The second connecting part 61 is U-shaped, the second side groove has the same structure as the first side groove and is provided on the side of the second connecting part 61; the tenon 62 is V-shaped and is connected to the second connecting part 61 through the arc-shaped part 65. A barb groove 66 is provided on the outer side wall of the tenon 62, and a barb body 57 is provided on the outer side wall of the tenon 55; the barb groove 66 and the barb body 57 cooperate to prevent separation. The bag structure using this edge frame is as follows. Figure 11 As shown in (c) in the figure.
[0036] like Figure 9 As shown: its structure is similar to Figure 5 The difference in the structure is that only the side wall of the tenon 62 facing outward is provided with a barb groove 66, and only the side wall of the tenon 55 facing outward is provided with a barb body 57; the barb groove 66 and the barb body 57 cooperate to prevent them from falling apart.
[0037] like Figure 9 As shown: the first connecting part 51 is U-shaped; the first side groove 53 is a horizontally bent inward hook with a barb and is connected to one side of the first connecting part 51. The first side groove is connected to and linked with the receiving part 52; the tenon 55 has a triangular cross-section and is connected to the first connecting part 51 through the L-shaped sealing strip mounting part 54 and the arc-shaped receiving part 52; the inner arc side of the receiving part 52 is provided with a reinforcing rib. The second connecting part 61 is U-shaped, the second side groove has the same structure as the first side groove and is provided on the side of the second connecting part 61. The second side groove is connected to and linked with the arc-shaped part 65; the tenon groove 62 is V-shaped and is directly connected to the second connecting part 61. A barb groove 66 is provided on the outer side wall of the tenon groove 62, and a barb body 57 is provided on the outer side wall of the tenon 55; the barb groove 66 and the barb body 57 cooperate to prevent separation.
[0038] like Figure 1 As shown, the edge frame can be a rivetless narrow frame with an invisible waterproof strip: the first connecting part 51 and the second connecting part 61 are narrower on the outside of the bag, making both the first connecting part 51 and the second connecting part 61 vertical hooks. The first side groove 53 is a U-shaped groove with barbs and connects to one side of the first connecting part 51; the tenon 55 has a barb-shaped cross section and is directly connected to the first connecting part 51. The second connecting part 61 is U-shaped, and the second side groove is a horizontal hook shape and is located on the side of the second connecting part 61; the tenon 62 is a U-shaped groove with an inclined opening and is directly connected to the second connecting part 61. One side of the tenon 62 groove wall is concave to form a barb groove 66, and the corresponding side of the tenon 55 is convex to form a barb body 57; the barb groove 66 and the barb body 57 cooperate to prevent separation. The bag structure using this edge frame is as follows. Figure 11 As shown in (d) in the figure.
[0039] Example 2 The manufacturing process of the rivetless bag structure in this embodiment includes the following steps: S1: The profile for making the edge frame is produced by extrusion molding.
[0040] S2: Cut and bend the profile to form the edge frame.
[0041] S3: Insert the edge of the box lid 1 into the first connecting part 51 of the edge frame, and use a steel needle to press the first connecting part 51 toward the inside of the box lid 1; insert the edge of the box bottom 2 into the second connecting part 61 of the edge frame, and use a steel needle (pressing needle) to press the second connecting part 61 toward the inside of the box bottom 2.
[0042] The specific process is as follows: A first protrusion 56 is created by pressing a steel needle through the side wall of the first connecting part 51 and inserted into the lid 1, so that the first protrusion 56 is embedded in the side wall of the lid 1; a second protrusion 64 is created by pressing a steel needle through the side wall of the second connecting part 61 and inserted into the bottom 2, so that the second protrusion 64 can be embedded in the side wall of the bottom 2. Specifically, several second protrusions 64 are provided on the inner wall of the second connecting part 61 of the recessed frame 6 to increase the firmness of the connection between the second connecting part 61 and the edge of the bottom 2. When the bottom 2 is made of plastic material, the protrusion can be embedded into the interior of the plastic material of the bottom 2 under the pressure of the pressurizing device, forming a more stable fixing structure and improving the connection firmness. Similarly, several first protrusions 56 can be provided on the inner wall of the first connecting part 51 to improve the firmness of the connection between the first connecting part 51 and the lid 1.
[0043] S4: Install the external accessories onto the edge frame. The external accessories include the lock assembly 3 and the hinge 4.
[0044] In addition, the lid 1 and bottom 2 can also be connected to the edge frame by snap-fit and adhesive, which not only eliminates the need for rivets, but also provides a base for the installation of hinges 4 and locks. This avoids the use of rivets, reduces the positioning, drilling and installation steps required for rivet installation during production, saves manpower and costs, improves production efficiency and increases the firmness of the engagement. Tests have shown that the firmness is twice that of ordinary rivets and rubber plate rolling fixing methods.
[0045] In step S2, the bending mechanism 8 can be used to bend the profile, such as... Figure 12 As shown, the bending mechanism 8 includes a movable bending head 85, a fixed bending head 86, and a bending hydraulic cylinder 83. Under the control of the bending hydraulic cylinder 83, the movable bending head 85 moves closer to or further away from the bent head 86 to bend the frame of the bag. The bending mechanism 8 also includes a slide block 81 and a slide table 82. The bending hydraulic cylinder 83 is fixed to one end of the slide block 81, and the slide table 82 slides with the slide block 81 and is connected to the piston rod of the bending hydraulic cylinder 83. The fixed bending head 86 is fixed to the other end of the slide block 81 via a fixed mounting base 87, and the movable bending head 85 is fixed to the slide table 82 via a movable mounting base 84. The movable bending head 85 has raised and recessed patterns matching the stripes on the frame, and the fixed bending head 86 has grooves. The movable bending head 85 and the fixed bending head 86 work together to bend the frame by 90°.
[0046] In step S3, the steel needle embossing mechanism 7 can be used to connect the edge frame to the lid or bottom of the box, such as... Figure 13 , 14 As shown, the steel needle embossing mechanism 7 includes a moving pressure head 73, a fixed pressure head 74, a fixed pressure head seat 75, a moving pressure head seat 76, a cylinder mounting plate 710, an embossing hydraulic cylinder 711, a transverse rail 713, a top tongue 714, and an embossing needle 715.
[0047] A plurality of imprinting needles 715 are provided on the side of the movable pressure head 73 facing the fixed pressure head 74. Under the control of the imprinting hydraulic cylinder 711, the movable pressure head 73 moves closer to or further away from the fixed pressure head 74 to imprint and connect the bag body with the frame steel needles. The fixed pressure head seat 75 and the movable pressure head seat 76 are arranged side by side. A cylinder mounting plate 710 is provided on the side of the movable pressure head seat 76 away from the fixed pressure head seat 75. A transverse rail 713 is connected between the cylinder mounting plate 710 and the fixed pressure head seat 75. The transverse rail 713 is slidably connected to the movable pressure head seat 76. The imprinting hydraulic cylinder 711 is fixed on the cylinder mounting plate 710, and the piston rod of the imprinting hydraulic cylinder 711 is connected to the movable pressure head 73. A top tongue 714 is slidably connected to the movable pressure head 73. A stop block is provided on the side of the movable pressure head 73 away from the fixed pressure head 74. One end of the top tongue 714 abuts against the stop block, and the other end of the top tongue 714 extends between adjacent imprinting needles 715 to push open the frame when the movable pressure head 73 moves away from the fixed pressure head 74. When the movable pressure head 73 moves closer to the fixed pressure head 74, the imprinting needles 715 can move towards the fixed pressure head 74, thereby forming a steel needle imprint connection between the box body and the frame. When the movable pressure head 73 moves away from the fixed pressure head 74, the imprinting needles 715 move away from the fixed pressure head 74. At this time, the top tongue 714 can hold the bag, thereby preventing the bag from moving with the imprinting needles 715 and causing the bag to detach from the imprinting needles 715.
[0048] In step S4, holes are made on the inside of the bag along the edge frame, and then screws are used to connect the bag to the hinge through the edge frame from the inside, thus avoiding exposed rivet or screw holes on the hinge.
[0049] The above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation; it is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom remain within the scope of this technology.
Claims
1. A rivetless bag structure, characterized in that: It includes a box cover (1), a box bottom (2) and an edge surrounding frame; The edge surrounding frame includes a first connecting part (51) and a second connecting part (61); the first connecting part (51) and the second connecting part (61) are U-shaped or vertically hooked; the connecting openings of the first connecting part (51) and the second connecting part (61) face opposite directions; the first connecting part (51) is connected to the edge of the box cover (1) by steel needle stamping, and the second connecting part (61) is connected to the edge of the box bottom (2) by steel needle stamping; The edge surrounding frame is a split structure composed of a concave frame (6) and a convex frame (5): the first connecting part (51) and the second connecting part (61) are respectively located on the convex frame (5) and the concave frame (6); a tenon head (55) is provided on the side of the convex frame (5) facing the concave frame (6), and a tenon groove (62) matching the tenon head (55) is provided on the concave frame (6); the cross section of the tenon head (55) is triangular, trapezoidal or hooked.
2. The rivetless bag structure according to claim 1, characterized in that: Hook-shaped grooves (66) are provided on the groove wall of the tenon groove (62), and hook-shaped bodies (57) are provided on the side wall of the tenon head (55); when the convex frame (5) and the concave frame (6) are connected, the hook-shaped grooves (66) and the hook-shaped bodies (57) cooperate with each other to prevent detachment.
3. The rivetless bag structure according to claim 1 or 2, characterized in that: The tenon head (55) is directly connected to the first connecting part (51); Or, the tenon head (55) and the first connecting part (51) are indirectly connected through a seal strip installation part (54) and a receiving part (52) in sequence.
4. The rivetless bag structure according to claim 3, characterized in that: The tenon groove (62) is directly connected to the second connecting part (61); Or, the tenon groove (62) and the second connecting part (61) are indirectly connected through an arc part (65).
5. The rivetless bag structure according to claim 4, characterized in that: The receiving part (52) is arc-shaped, and a hook-shaped fulcrum (58) or a reinforcing rib is provided on the inner arc side of the receiving part (52), and the hook-shaped fulcrum (58) is hook-shaped and serves as a fulcrum for connecting with external accessories.
6. The rivetless bag structure according to claim 4 or 5, characterized in that: A first side groove part (53) with a lateral opening is provided on one side of the first connecting part (51) located inside the box cover (1); a second side groove part (63) with a lateral opening is provided on one side of the second connecting part (61) located inside the box bottom (2); the first side groove part (53) and the second side groove part (63) serve as fulcrums for connecting with the lock assembly (3).
7. The rivetless bag structure according to claim 6, characterized in that: The second side groove part (63) and the first side groove part (53) are in the shape of a C-shaped or horizontally folded inner hook shape with barbs at the groove opening.
8. The rivetless bag structure according to claim 7, characterized in that: When the second side groove part (63) is connected to the arc part (65), their surfaces are continuous and联动 with each other; or / and, when the first side groove part (53) is connected to the receiving part (52), their surfaces are continuous and联动 with each other.
9. The rivetless bag structure according to claim 3, characterized in that: The seal strip installation part (54) is L-shaped or C-shaped.
10. A manufacturing process for a rivetless bag structure, characterized in that: It includes the following steps: S1: Process the profile for making the edge surrounding frame by extrusion molding process; S2: Cut and bend the profile to form the edge surrounding frame; S3: Insert the edge of the box cover (1) into the first connecting part (51) of the edge surrounding frame, and use a steel needle to stamp the side of the first connecting part (51) facing the inside of the box cover (1); insert the edge of the box bottom (2) into the second connecting part (61) of the edge surrounding frame, and use a steel needle to stamp the side of the second connecting part (61) facing the inside of the box bottom (2); S4: Install external accessories onto the edge frame, the external accessories including lock assembly (3) and hinge (4).