A convenient expandable briefcase

Abstract

This utility model relates to the field of briefcases, specifically a convenient expandable briefcase, including a briefcase body with a handle fixedly connected to its surface. This utility model utilizes the briefcase body, handle, waterproof strap, and expandable storage mechanism in conjunction. When large or multiple items need to be placed and the briefcase's internal space is insufficient, the expandable storage mechanism increases the internal storage space of the briefcase body. The waterproof strap, located at the zipper of the briefcase body, can prevent water from splashing onto the zipper and seeping into the briefcase, wetting the internal documents. This solves the problem that typical briefcases, designed for portability, are generally thin, resulting in limited internal storage space. If large items are desired, insufficient storage space necessitates carrying a separate, larger bag, leading to inconvenience during travel.

Description

Technical Field

[0001] This utility model relates to the field of briefcases, specifically a convenient and expandable briefcase. Background Technology

[0002] A briefcase is a bag designed specifically for business, official, or formal occasions. It is mainly used to carry documents, laptops, stationery, and other office supplies. It is not only a practical tool but also a symbol of a professional image for working professionals.

[0003] Typical briefcases are generally thin for easy carrying, resulting in limited internal storage space. If you want to store larger items, the storage space may not be enough, requiring you to carry an additional bag with larger storage space, which makes it inconvenient to travel. Utility Model Content

[0004] To overcome the shortcomings of existing technology, general briefcases are usually relatively thin for easy carrying, resulting in small internal storage space. If you want to put large items, the storage space will be insufficient, so you need to carry an additional bag with a larger storage space, which causes inconvenience when traveling. This utility model proposes a convenient expandable briefcase.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a convenient expandable briefcase, including a briefcase body, a carrying strap fixedly connected to the surface of the briefcase body, and an expansion storage mechanism provided on the inner side of the briefcase body;

[0006] The extended storage mechanism includes an extended bag, the surface of which is fixedly connected to the inner cavity of the briefcase body. Three fixing blocks are fixedly connected to the inner side of the briefcase body. Six fixing plates are fixedly connected to the inner side of the briefcase body, arranged in pairs on the surface of the fixing blocks. The surface of each fixing plate is fixedly connected to the inner side of the briefcase body. A snap-fit ​​rod is movably connected to the inner cavity of each fixing plate, and the surface of the snap-fit ​​rod snaps into the inner cavity of the fixing block.

[0007] Preferably, a waterproof strip is fixedly connected to the surface of the briefcase body, the waterproof strip is located at the zipper at the top of the briefcase body, and the waterproof strip is made of rubber.

[0008] Preferably, the inner cavity of the briefcase body is fixedly connected with four inner pockets.

[0009] Preferably, each inner pocket has a sub-hook and loop fastener fixedly connected to its inner side, and a female hook and loop fastener is attached to the surface of the sub-hook and loop fastener, with the surface of the female hook and loop fastener fixedly connected to the inner cavity of the briefcase body.

[0010] Preferably, one end of the snap-fit ​​rod is fixedly connected to a spring, and one end of the spring is fixedly connected to the inner cavity of the fixing plate.

[0011] Preferably, the surface of the fixing block is provided with a snap-fit ​​groove, and the inner cavity of the snap-fit ​​groove is movably connected to one end of the snap-fit ​​rod.

[0012] Preferably, the surface of the fixing plate is provided with a sliding groove, the inner cavity of the sliding groove is movably connected to a sliding block, and the surface of the sliding block is fixedly connected to the surface of the snap-fit ​​rod.

[0013] The advantages of this utility model are:

[0014] This utility model utilizes a briefcase body, a carrying strap, a waterproof strap, and an extended storage mechanism. When large items or multiple items need to be placed, and the internal space of the briefcase itself is insufficient, the extended storage mechanism can increase the internal storage space of the briefcase body. The waterproof strap, located at the zipper of the briefcase body, can prevent water from splashing onto the zipper and seeping into the briefcase, wetting the documents inside. This solves the problem that ordinary briefcases, designed for portability, are generally thin, resulting in limited internal storage space. If large items are to be placed, the storage space becomes insufficient, requiring the carrying of an additional bag with larger storage space, thus causing inconvenience when traveling. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall bottom structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0020] Figure 5 This is a schematic diagram of the expansion bag structure of this utility model;

[0021] Figure 6This is a schematic diagram of the cross-sectional structure of the fixing plate of this utility model.

[0022] In the diagram: 1. Briefcase body; 2. Handle; 3. Waterproof strap; 4. Extended storage mechanism; 401. Fixing block; 402. Fixing plate; 403. Extended pocket; 404. Inner pocket; 405. Female Velcro; 406. Female Velcro; 407. Snap-on rod; 408. Sliding groove; 409. Spring; 410. Sliding block; 411. Snap-on groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0025] This application discloses a convenient and expandable briefcase. (Refer to...) Figure 1 and Figure 6 A convenient expandable briefcase includes a briefcase body 1, a carrying strap 2 fixedly connected to the surface of the briefcase body 1, and an expansion storage mechanism 4 provided on the inside of the briefcase body 1.

[0026] The extended storage mechanism 4 includes an extended bag 403, the surface of which is fixedly connected to the inner cavity of the briefcase body 1. The inner side of the briefcase body 1 is fixedly connected to a fixing block 401, and there are three fixing blocks 401. The inner side of the briefcase body 1 is fixedly connected to a fixing plate 402, and there are six fixing plates 402, which are distributed in pairs on the surface of the fixing blocks 401. The surface of the fixing plate 402 is fixedly connected to the inner side of the briefcase body 1. The inner cavity of the fixing plate 402 is movably connected to a snap-fit ​​rod 407, and the surface of the snap-fit ​​rod 407 snaps into the inner cavity of the fixing block 401.

[0027] Reference Figure 1 and Figure 5 A waterproof strip 3 is fixedly connected to the surface of the briefcase body 1. The waterproof strip 3 is located at the zipper at the top of the briefcase body 1. The waterproof strip 3 is made of rubber. Because the waterproof strip 3 is made of waterproof rubber, it can provide a certain degree of waterproofing to the zipper at the top of the briefcase body 1, preventing water from splashing onto the zipper and seeping into the interior of the briefcase body 1, thus wetting the documents or objects inside.

[0028] Reference Figure 3 and Figure 5The briefcase body 1 has four inner pockets 404 fixedly connected to its inner cavity. The inner pockets 404 provide multiple classified storage spaces for the inner cavity of the briefcase body 1, avoiding clutter caused by placing all objects in the inner cavity of the briefcase body 1, which would make it difficult to find things.

[0029] Reference Figure 4 Each inner pocket 404 has a sub-hook and loop fastener 405 fixedly connected to its inner side. A female hook and loop fastener 406 is attached to the surface of the sub-hook and loop fastener 405. The surface of the female hook and loop fastener 406 is fixedly connected to the inner cavity of the briefcase body 1. By setting the sub-hook and loop fastener 405 and the female hook and loop fastener 406, the sub-hook and loop fastener 405 are attached to the surface of the female hook and loop fastener 406 to seal the opening of the inner pocket 404, so as to prevent the objects inside the inner pocket 404 from falling out of the inner cavity of the inner pocket 404 when the briefcase body 1 is inverted.

[0030] Reference Figure 6 One end of the snap-fit ​​rod 407 is fixedly connected to a spring 409. One end of the spring 409 is fixedly connected to the inner cavity of the fixing plate 402. Through the spring 409, due to the elasticity of the spring 409, the snap-fit ​​rod 407 always has a force towards the inner cavity of the snap-fit ​​groove 411, which increases the stability of the snap-fit ​​rod 407 when snapped into the inner cavity of the snap-fit ​​groove 411.

[0031] Reference Figure 6 The surface of the fixing block 401 is provided with a snap-fit ​​groove 411. The inner cavity of the snap-fit ​​groove 411 is movably connected to one end of the snap-fit ​​rod 407. The snap-fit ​​groove 411 provides snap-fit ​​space for the snap-fit ​​rod 407 to snap into the inner cavity of the fixing block 401. The snap-fit ​​groove 411 is inclined around its perimeter, so that when the snap-fit ​​rod 407 is subjected to a large force, it can slide out of the surface of the fixing block 401 through the snap-fit ​​groove 411, indirectly causing the two sides of the bottom of the briefcase body 1 to open outward, thereby driving the expansion bag 403 to open outward, thereby increasing the storage space at the bottom of the inner cavity of the briefcase body 1.

[0032] Reference Figure 6 The surface of the fixed plate 402 is provided with a sliding groove 408. The inner cavity of the sliding groove 408 is movably connected to the sliding block 410. The surface of the sliding block 410 is fixedly connected to the surface of the snap-fit ​​rod 407. The sliding groove 408 and the sliding block 410 are used to guide the snap-fit ​​rod 407 as it slides in the inner cavity of the fixed plate 402, and also to limit its movement. This prevents the snap-fit ​​rod 407 from extending too far out of the fixed plate 402 due to the elasticity of the spring 409, and thus prevents it from sliding smoothly into the inner cavity of the snap-fit ​​groove 411 due to the guidance of the arc-shaped surface of the fixed block 401.

[0033] Working Principle: When large or excessive items need to be placed inside the briefcase, the limited storage space of the briefcase itself prevents the items from fitting properly. Therefore, the expansion storage mechanism 4 is used to expand the storage space inside the briefcase body 1. First, the fork at the bottom of the briefcase body 1 is pried open outwards. At this time, the locking rod 407 is pressured by the inner cavity of the locking groove 411 in the fixing block 401, causing the locking rod 407 to slide into the inner cavity of the fixing plate 402. Simultaneously, the spring 409 is compressed and deformed, which also causes the sliding block 410 to slide in the inner cavity of the fixing plate 402 until the locking rod 407 disengages from the surface of the fixing block 401. At this time, the expansion bag 403, which has been folded and stored in the briefcase body 1, opens from the folded state to a horizontal state. The expansion bag 403 increases the storage space at the bottom of the briefcase body 1. At this time, the briefcase body 1 and the expansion bag 403 cooperate to form a horizontal position. The inverted Y-shape allows the briefcase body 1 to return to its slim state when there is no longer a need to place large or numerous objects inside. This is achieved by pushing the two sides of the bottom of the briefcase body 1 inwards, causing the latching rod 407 to slide on the surface of the fixing block 401 until it reaches the inner cavity of the latching groove 411 in the fixing block 401. At this point, the elasticity of the spring 409 causes the latching rod 407 to continuously exert force towards the inner cavity of the latching groove 411, indirectly fixing the two sides of the bottom of the briefcase body 1 together. The briefcase body 1 then returns to its slim state. The waterproof strip 3, located at the zipper at the top of the briefcase body 1, prevents water from splashing onto the zipper and seeping into the interior of the briefcase body 1. The inner pocket 404 provides multiple compartmentalized storage spaces inside the briefcase body 1, and the opening of the inner pocket 404 can be sealed by the attachment of the female Velcro 405 and the female Velcro 406.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A convenient expandable briefcase, comprising a briefcase body (1), characterized in that: The briefcase body (1) is fixedly connected to a carrying strap (2), and an extended storage mechanism (4) is provided on the inner side of the briefcase body (1). The extended storage mechanism (4) includes an extended bag (403), the surface of which is fixedly connected to the inner cavity of the briefcase body (1). The inner side of the briefcase body (1) is fixedly connected to a fixing block (401), and there are three fixing blocks (401). The inner side of the briefcase body (1) is fixedly connected to a fixing plate (402), and there are six fixing plates (402), which are distributed in pairs on the surface of the fixing blocks (401). The surface of the fixing plate (402) is fixedly connected to the inner side of the briefcase body (1). The inner cavity of the fixing plate (402) is movably connected to a snap-fit ​​rod (407), and the surface of the snap-fit ​​rod (407) snaps into the inner cavity of the fixing block (401).

2. The convenient expandable briefcase according to claim 1, characterized in that: A waterproof strip (3) is fixedly connected to the surface of the briefcase body (1). The waterproof strip (3) is located at the zipper at the top of the briefcase body (1) and is made of rubber.

3. The convenient expandable briefcase according to claim 1, characterized in that: The briefcase body (1) has an inner pocket (404) fixedly connected to its inner cavity, and the number of inner pockets (404) is four.

4. The convenient expandable briefcase according to claim 3, characterized in that: Each inner pocket (404) has a sub-hook and loop fastener (405) fixedly connected to its inner side. A female hook and loop fastener (406) is attached to the surface of the sub-hook and loop fastener (405). The surface of the female hook and loop fastener (406) is fixedly connected to the inner cavity of the briefcase body (1).

5. A convenient expandable briefcase according to claim 1, characterized in that: One end of the snap-fit ​​rod (407) is fixedly connected to a spring (409), and one end of the spring (409) is fixedly connected to the inner cavity of the fixing plate (402).

6. The convenient expandable briefcase according to claim 1, characterized in that: The surface of the fixing block (401) is provided with a snap-fit ​​groove (411), and the inner cavity of the snap-fit ​​groove (411) is movably connected to one end of the snap-fit ​​rod (407).

7. A convenient expandable briefcase according to claim 1, characterized in that: The surface of the fixed plate (402) is provided with a sliding groove (408), and the inner cavity of the sliding groove (408) is movably connected to a sliding block (410). The surface of the sliding block (410) is fixedly connected to the surface of the snap-fit ​​rod (407).

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