Soft and hard composite extrusion rubber frame for bags and suitcases

Abstract

The soft and hard composite extrusion rubber frame comprises an extrusion frame body, a case shell, a main zipper and a hard sealing strip, the extrusion frame body comprises a soft extrusion frame body on the upper side and a hard extrusion frame body on the lower side, and an open first gap is formed between the soft extrusion frame body and the hard extrusion frame body on the lower side; the two side ports of the lower edge of the box shell are inserted between the first gaps formed in the two sides, second gaps are formed in the sides, facing each other, of the soft extrusion frames on the two sides, a main zipper is arranged in the second gaps in a sleeved mode, clamping grooves are further formed in the inner walls of the hard extrusion frames, and buckles are integrally formed on the two sides of the upper portion of the hard sealing strip. According to the extrusion frame, the soft and hard co-extrusion technology of two materials is adopted, the automatic or semi-automatic sewing process can be facilitated, and the effects of reinforcing, supporting and shaping the box shell can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of injection-molded luggage, in particular to a soft and hard composite extruded plastic frame for luggage. Background Art

[0002] Injection-molded luggage is manufactured using the injection molding process. Its core characteristic is that molten plastic is injected into a mold, where it cools and solidifies to form a single, integrated shell structure. This process was first used in the industrial sector and has gradually spread to the consumer market in recent years, with particular success in travel luggage and tool and equipment cases.

[0003] Due to the stress generated during the injection molding process of luggage, the four sides and top of the box will produce inward deformation, especially when the box is loaded, the lower part of the box shell is subjected to pressure and the upper part is pulled, which will aggravate the deformation and collapse of the box. In addition, when the box is loaded, the pressure is too concentrated, causing the box to be locally subjected to excessive force and even deformed or damaged. A soft and hard composite extruded plastic frame for luggage is proposed. The extrusion frame is used to increase the effect, disperse and absorb the pressure on the lower part of the box, and minimize the molding thickness of the box, so that the outer surface of the one-piece injection-molded box does not need to be particularly bulged due to stress, and the bulge is minimized, making the box more beautiful and natural. Summary of the Invention

[0004] The purpose of the present invention is to provide a soft and hard composite extruded plastic frame for luggage to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a soft and hard composite extruded plastic frame for luggage, comprising an extrusion frame, a box shell, a main zipper and a hard seal, the extrusion frame comprising a soft extrusion frame on the upper side and a hard extrusion frame on the lower side, an open first gap being provided between the soft extrusion frame and the hard extrusion frame on the lower side, the ports on both sides of the lower edge of the box shell being inserted between the first gaps developed on both sides, a second gap being provided on the facing side of the soft extrusion frames on both sides, a main zipper being provided inside the second gap, a card slot being further provided on the inner wall of the hard extrusion frame, buckles being integrally formed on both sides of the upper part of the hard seal, and the hard seal being clamped to the inside of the card slots on both sides by the buckles.

[0006] Preferably, the extrusion frame is formed into a closed loop structure by heat bending technology.

[0007] Preferably, the extrusion frame, the lower edge of the box shell and both sides of the main zipper are sewn together into one piece through sewing positions.

[0008] Preferably, the interior of the card slot is consistent with the extension direction of the hard extrusion frame.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The present invention comprises a hard extrusion frame and a soft extrusion frame, and a first slit for installing the open end of the lower edge of the box shell is left at the junction between the two. The soft extrusion frame also leaves a second slit for installing the main zipper in the opposite direction. When this extrusion frame is used in luggage, the first slit at the soft and hard junction of the extrusion frame is plugged into the port of the box shell, and the main zipper is placed in the second slit of the soft extrusion frame. The sewing machine is close to the extrusion frame and sewn along the extension direction of the extrusion frame. This extrusion frame adopts the soft and hard co-extrusion technology of two materials. The hard extrusion frame can facilitate automatic or semi-automatic sewing process and can reinforce, support, shape and protect the box shell. The soft extrusion frame covers the lower edge of the box body and the main zipper, which can protect the box body and the zipper, and has a good hand feel, preventing the frame from flashing or sharp scratches on the hands.

[0011] 2. The present invention also provides a slot for the hard seal on the inner wall of the hard extrusion frame. The slot is consistent with the extension direction of the extrusion frame. The hard seal is connected to the slot on the inner wall of the hard extrusion frame to form an integral whole, which makes its reinforcement more prominent and can protect the fabric inside the bag from scratches and snags, forming a more beautiful integrated whole.

[0012] 3. The present invention also breaks through the shape and size limitations of the adapter box shell through the hot bending technology of the extrusion frame and the flexibility of the hard seal itself. By calculating the circumference of the bottom edge of the box shell and converting it into the length of the corresponding extrusion frame and hard seal, it can be universally adapted to all types of boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0014] Figure 2 This is a schematic diagram of the extrusion frame structure from a second viewing angle of the present invention;

[0015] Figure 3 This is a cross-sectional view of the extruded frame structure from the third viewing angle of the present invention.

[0016] In the figure: 1. Hard extrusion frame; 2. Soft extrusion frame; 3. Hard seal; 4. Main zipper; 5. Box shell; 6. Second gap; 7. Card slot; 8. Extrusion frame; 9. First gap; 10. Buckle. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-3 The present invention provides a technical solution: a soft and hard composite extruded plastic frame for luggage, including an extrusion frame 8, a box shell 5, a main zipper 4 and a hard seal 3. The extrusion frame 8 includes a soft extrusion frame 2 on the upper side and a hard extrusion frame 1 on the lower side. An open first gap 9 is opened between the soft extrusion frame 2 and the hard extrusion frame 1 on the lower side. The ports on both sides of the lower edge of the box shell 5 are inserted between the first gaps 9 developed on both sides. A second gap 6 is opened on the facing side of the soft extrusion frames 2 on both sides, and the main zipper is sleeved inside the second gap 6. 4. By plugging the first slit 9 at the soft-hard junction of the extrusion frame 8 onto the port of the box shell 5, and placing the main zipper 4 into the second slit 6 of the soft extrusion frame 2, the connection between the extrusion frame 8, the main zipper 4 and the box shell 5 is achieved. A card slot 7 is also provided on the inner wall of the hard extrusion frame 1. Buckles 10 are integrally formed on both sides of the upper part of the hard seal 3. The hard seal 3 is snapped into the inside of the card slots 7 on both sides through the buckles 10. The hard seal 3 is snapped into the hard extrusion frame 1, which has a gain effect on the force sharing of the extrusion frame 8.

[0019] The extrusion frame 8 forms a closed-loop structure through hot bending technology, so that the extrusion frame 8 fits closely to the shape of the box shell 5, adapts to the sizes of box shells 5 of various sizes, is multi-purpose in one, and cooperates with the first gap 9 opened between the soft extrusion frame 2 and the hard extrusion frame 1, which can be plugged in to adapt to boxes of various sizes; the extrusion frame 8, the lower edge of the box shell 5 and the two sides of the main zipper 4 are sewn through the sewing position to be connected into one, and the extrusion frame 8 is abutted against the extrusion frame 8 by a sewing machine and sewn along the extension direction of the extrusion frame 8 to achieve fixed installation between the extrusion frame 8, the box shell 5 and the main zipper 4; the inside of the card slot 7 is consistent with the extension direction of the hard extrusion frame 1, and the card slot 7 accurately positions the sewing action, plays a guiding role, and makes the sewing lines neatly aligned.

[0020] Working principle: When the invention is in use, the extrusion frame 8 forms a closed-loop structure through heat bending technology. This frame includes a hard extrusion frame 1 and a soft extrusion frame 2, and a first gap 9 is left at the junction between the two for installing the open end of the lower edge of the box shell 5. The soft extrusion frame 2 also has a second gap 6 for installing the main zipper 4 in the opposite direction. The inner wall of the hard extrusion frame 1 is also provided with a card slot 7 for the hard seal 3. This card slot 7 is consistent with the extension direction of the extrusion frame 8. When this extrusion frame 8 is applied to luggage, the first gap 9 at the soft and hard junction of the extrusion frame 8 is inserted into the port of the box shell 5, and the main zipper 4 is placed in the second gap 6 of the soft extrusion frame 2. The sewing machine is close to the extrusion frame 8 and sewed along the extension direction of the extrusion frame 8, and then the hard seal 3 is correspondingly connected to the card slot 7 on the inner wall of the hard extrusion frame 1 to form a whole. This extrusion frame 8 adopts the soft and hard co-extrusion technology of two materials, which can be convenient for automatic or The semi-automatic sewing process can reinforce, support and shape the box shell 5, and is supplemented by the hard seal 3, so that its reinforcement effect is more prominent, and it can protect the internal fabric of the box shell 5 from being scratched or torn, forming a more beautiful integrated body. By adding a group of reinforcing and shaping extrusion frames 8 around the lower edge opening of the box shell 5, the force transmission around the side wall of the box shell 5 is dispersed to the extrusion frame 8, reducing the deformation and collapse of the box shell 5, and when the box shell 5 is loaded, the force is shared and pulled, thereby improving the overall bearing effect of the box shell 5, avoiding deformation or even damage of the box shell 5 due to excessive force in the local area, and utilizing this increase effect to minimize the molding thickness of the box shell 5, and the outer surface of the one-piece injection-molded box shell 5 does not need to be particularly bulged due to stress, and the bulge amplitude is minimized, making the box more beautiful and natural.

[0021] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0022] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A soft and hard composite extruded plastic frame for luggage, comprising an extruded frame (8), a box shell (5), a main zipper (4) and a hard seal (3), characterized in that: The extrusion frame (8) comprises a soft extrusion frame (2) on the upper side and a hard extrusion frame (1) on the lower side. An open first gap (9) is provided between the soft extrusion frame (2) and the hard extrusion frame (1) on the lower side. The ports on both sides of the lower edge of the box shell (5) are inserted between the first gaps (9) on both sides. The soft extrusion frames (2) on both sides are provided with second gaps (6) on the facing sides. A main zipper (4) is provided inside the second gap (6). A card slot (7) is also provided on the inner wall of the hard extrusion frame (1). Buckles (10) are integrally formed on both sides of the upper part of the hard seal (3). The hard seal (3) is clamped inside the card slots (7) on both sides through the buckles (10).

2. The soft and hard composite extruded plastic frame for luggage according to claim 1, characterized in that: The extrusion frame (8) is formed into a closed loop structure through a heat bending technology.

3. The soft and hard composite extruded plastic frame for luggage according to claim 1, characterized in that: The extrusion frame (8), the lower edge of the box shell (5) and both sides of the main zipper (4) are sewn together into one piece through sewing positions.

4. The soft and hard composite extruded plastic frame for luggage according to claim 1, characterized in that: The interior of the card slot (7) is consistent with the extension direction of the hard extrusion frame (1).

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