Briefcase with extensible space

Abstract

The invention discloses a space-extensible briefcase. The space-extensible briefcase comprises a briefcase body, an extension mechanism, a limiting mechanism, a cover surface and a briefcase cover mechanism, the expansion mechanisms are arranged at two ends of the briefcase body, the limiting mechanisms are arranged at two ends of the briefcase body, the cover surface is arranged at the top of the briefcase body, and the cover mechanisms are arranged at two ends of the cover surface. Compared with the prior art, the briefcase has the advantages that the cover can be driven to be far away from the briefcase body through the pleated surface, so that the storage space between the cover and the briefcase body is enlarged, the limiting belts slide in the limiting grooves at the moment, and the hand-screwing bolts are screwed up, penetrate through the corresponding limiting holes and are screwed into the threaded grooves, so that the storage space is enlarged; the position of the limiting belt is limited and fixed, the storage space between the briefcase bodies is prevented from being continuously expanded, the space of the briefcase is expanded and contracted, the requirement for the use space is met, excessive files and articles can be stored, and the working efficiency of office staff is improved.

Description

Technical Field

[0001] This invention relates to the field of briefcase technology, specifically to a spatially expandable briefcase. Background Technology

[0002] A briefcase, also known as a business bag, is a narrow, box-shaped bag primarily used to store paper and other documents. Lawyers often use briefcases to store case files, while businesspeople and other professionals use them to store laptops and important documents such as files, books, or certificates.

[0003] Currently, traditional briefcases have a simple structure and limited internal storage space. They are not easy to adjust in size, and when there are many items to store, the limited space can only hold a limited number of items. If documents are forcibly stuffed into the briefcase, it is easy for the briefcase to break, which means that the briefcase cannot store too many documents or items, thus affecting the work efficiency of office workers and failing to meet their needs.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned defects and provide a space-expandable briefcase.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is: a spatially expandable briefcase, comprising a briefcase body, characterized in that: An extension mechanism is provided at both ends of the briefcase body. The extension mechanism includes pleated surfaces fixedly connected to both ends of the briefcase body, and a cover is fixedly connected to the end of the pleated surfaces away from the briefcase body. A limiting mechanism is provided at both ends of the briefcase body. The limiting mechanism includes connecting blocks fixedly connected to both ends of the side of the briefcase body. Each end of the connecting block is fixedly connected to a limiting band. Each end of the side of the cover has a limiting groove. The limiting band is slidably connected to the limiting groove. The limiting band has multiple limiting holes that are equally spaced. Each corner of the cover surface is threaded with a hand-tightening bolt. One end of the inner wall of the limiting groove has a threaded groove. One end of the hand-tightening bolt passes through the limiting hole and is threaded to the threaded groove. A cover, wherein the cover is disposed on the top of the briefcase body; A cover mechanism is provided at both ends of the cover surface. The cover mechanism includes a cover one fixedly connected to the upper end of the cover surface, the cover one being located at the rear end of the cover surface, and a cover two being provided at the front end of the cover surface. Storage grooves are provided at both ends of the cover surface. The cover one is slidably connected to the storage groove, and the cover two is slidably connected to the storage groove.

[0007] Furthermore, a rectangular sliding hole is provided on one side of the limiting groove, and a T-shaped limiting block is fixedly connected to one end of the limiting band, and the T-shaped limiting block is slidably connected in the rectangular sliding hole.

[0008] Furthermore, the bottom center of both ends of the cover is provided with a slot, and a card plate is rotatably connected inside the slot. The upper ends of both sides of the briefcase body are provided with grooves, and a magnetic sheet is fixedly connected to the inner wall of the groove. A magnetic sheet is fixedly connected to the end of the card plate near the groove, and a magnetic sheet is magnetically connected to the magnetic sheet. The magnetic sheet is engaged and connected in the groove. A toggle groove is provided at the bottom of the card plate.

[0009] Furthermore, a telescopic rod is fixedly connected to the inner wall of the storage slot. There are multiple telescopic rods arranged at equal intervals. A spring is fixedly connected between one end of the first cover and the inner wall of the storage slot. A spring is fixedly connected between one end of the second cover and the inner wall of the storage slot. The spring is sleeved on the outside of the telescopic rod. Guide grooves are opened at both ends of the inner wall of the storage slot. Guide sliders are fixedly connected to both ends of the opposite side of the first and second covers. The guide sliders are slidably connected in the guide grooves.

[0010] Furthermore, the briefcase body has a fixing mechanism at the front end, the fixing mechanism includes a fixing block fixedly connected to the upper end of the cover, the fixing block has a T-shaped slide at the bottom, the bottom ends of the cover are fixedly connected to elastic ropes, the bottom of the elastic ropes are connected to T-shaped sliders, and the T-shaped sliders are slidably connected in the T-shaped slide.

[0011] Furthermore, a handle is fixedly connected to the top of the cover, and an anti-slip sleeve is fixedly fitted onto the outer surface of the handle.

[0012] The advantages of this invention compared to existing technologies are as follows: By using an expansion mechanism and a limiting mechanism, when the space of the briefcase needs to be expanded, multiple hand-tightened bolts are loosened sequentially. The pleated surface allows the cover to move away from the briefcase body, increasing the storage space between the cover and the body. At this time, the limiting band slides within the limiting groove. Then, the hand-tightened bolts are tightened, allowing them to pass through the corresponding limiting holes and screw into the threaded grooves, thus limiting and fixing the position of the limiting band and preventing further expansion of the storage space between the briefcase bodies. The cover is then flipped over to cover the top of the briefcase body. In conjunction with the use of the card plate, magnetic sheet two, magnetic sheet one, cover one, storage groove, spring, cover two, elastic rope, T-shaped slider, fixing block, and T-shaped slide, cover one, cover two, and cover two can properly close onto the cover, achieving the expansion and contraction of the briefcase space. This meets the space requirements, allows for the storage of excessive documents and items, improves the work efficiency of office workers, and enhances practicality. Attached Figure Description

[0013] Figure 1 This invention relates to a novel, spatially expandable, three-dimensional briefcase. Figure 1 .

[0014] Figure 2 This invention relates to a novel, spatially expandable, three-dimensional briefcase. Figure 2 .

[0015] Figure 3 This invention relates to a novel, spatially expandable, three-dimensional briefcase. Figure 3 .

[0016] Figure 4 This is a front sectional view of a novel, spatially expandable briefcase according to the present invention.

[0017] Figure 5 This is a top sectional view of a novel spatially expandable briefcase according to the present invention. Figure 1 .

[0018] Figure 6 This is a top sectional view of a novel spatially expandable briefcase according to the present invention. Figure 2 .

[0019] Figure 7 This invention relates to a novel, spatially expandable briefcase. Figure 2 Enlarged structural diagram at point A in the middle.

[0020] Figure 8 This invention relates to a novel, spatially expandable briefcase. Figure 4 Enlarged structural diagram at point B in the middle.

[0021] Figure 9 This invention relates to a novel, spatially expandable briefcase. Figure 5Enlarged structural diagram at point C.

[0022] The diagram shows: 1. Briefcase body; 2. Expansion mechanism; 21. Pleated surface; 22. Cover; 3. Limiting mechanism; 31. Connecting block; 32. Limiting band; 33. Limiting groove; 34. Rectangular sliding hole; 35. Limiting hole; 36. Hand-tightening bolt; 37. T-shaped limiting block; 38. Threaded groove; 4. Cover; 41. Groove; 42. Clamping plate; 43. Recess; 44. Magnetic piece one; 45. Magnetic piece two; 46. Actuating groove; 5. Cover mechanism; 51. Cover one; 52. Cover two; 53. Storage slot; 54. Telescopic rod; 55. Spring; 56. Guide slide; 57. Guide slider; 6. Fixing mechanism; 61. Fixing block; 62. T-shaped slide; 63. Elastic rope; 64. T-shaped slider; 7. Handle; 71. Anti-slip sleeve. Detailed Implementation

[0023] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0024] The technical solutions of the novel embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] like Figures 1 to 9 As shown, this embodiment proposes a space-expandable briefcase. In order to realize the function of expanding the usable space of the briefcase, the present invention provides an expansion mechanism 2 at both ends of the briefcase body 1. The expansion mechanism 2 includes a pleated surface 21 fixedly connected to both ends of the briefcase body 1. A cover 22 is fixedly connected to the end of the pleated surface 21 away from the briefcase body 1. The fixed connection between the briefcase body 1 and the pleated surface 21, and between the pleated surface 21 and the cover 22, is by sewing. The pleated surface 21 can move the cover 22 away from the briefcase body 1, thereby increasing the storage space between the cover 22 and the briefcase body 1.

[0026] The briefcase body 1 has limiting mechanisms 3 at both ends. Each limiting mechanism 3 includes connecting blocks 31 fixedly connected to both sides of the briefcase body 1. Limiting straps 32 are fixedly connected to both ends of each connecting block 31. The connection between the connecting blocks 31 and the limiting straps 32 is achieved by sewing. Limiting grooves 33 are formed at both ends of the side of the cover 22. The limiting straps 32 are slidably connected within the limiting grooves 33. Multiple limiting holes 35 are formed on the limiting straps 32 and are evenly spaced. The surface of the cover 22 has four... The briefcase is connected by a hand-tightening bolt 36. One end of the inner wall of the limiting groove 33 is provided with a threaded groove 38. One end of the hand-tightening bolt 36 is inserted into the limiting hole 35 and the end is threaded into the threaded groove 38. After adjusting the space of the briefcase to suit the size of the items to be stored, the hand-tightening bolt 36 is tightened so that it passes through the corresponding limiting hole 35 and is screwed into the threaded groove 38, thereby limiting and fixing the position of the limiting band 32 and preventing the storage space between the briefcase bodies from continuing to expand.

[0027] A rectangular sliding hole 34 is provided on one side opposite to the limiting groove 33. A T-shaped limiting block 37 is fixedly connected to one end of the limiting band 32. The T-shaped limiting block 37 is slidably connected in the rectangular sliding hole 34. By moving the T-shaped limiting block 37, the limiting band 32 is pulled back into the limiting groove 33, thereby folding the pleated surface 21 to facilitate adjustment of the size of the internal space of the briefcase.

[0028] The briefcase body 1 has a cover 4 on the top. The bottom center of both ends of the cover 4 has a slot 41. The slot 41 is rotatably connected to a card plate 42. The upper ends of both sides of the briefcase body 1 have grooves 43. A magnetic sheet 44 is fixedly connected to the inner wall of the groove 43. A magnetic sheet 45 is fixedly connected to the end of the card plate 42 near the groove 43. The magnetic sheet 45 is engaged in the groove 43. The bottom of the card plate 42 has a sliding groove 46. The sliding groove 46 facilitates the flipping of the card plate 42. By flipping the cover 4 to cover the top of the briefcase body 1, and flipping the card plate 42, the magnetic sheet 45 is engaged in the groove 43 and magnetically attracted to the magnetic sheet 44, so that the cover 4 can be properly closed on the cover 22.

[0029] The cover 4 has a cover mechanism 5 at both ends. The cover mechanism 5 includes a cover 1 51 fixedly connected to the upper end of the cover 22. The cover 1 51 is located at the rear end of the cover 4, and the cover 2 52 is located at the front end of the cover 4. Both ends of the cover 4 have a storage groove 53. The cover 1 51 and the cover 2 52 are slidably connected in the storage groove 53. By sliding the cover 1 51 and the cover 2 52 in the storage groove 53, the cover 1 51 and the cover 2 52 can be properly closed on the cover 22, thereby achieving the expansion and contraction of the briefcase space.

[0030] Telescopic rods 54 are fixedly connected to the inner wall of the storage slot 53. There are multiple telescopic rods 54, which are equally spaced. One end of the cover 51 is fixedly connected to the inner wall of the storage slot 53 with a spring 55. One end of the cover 52 is fixedly connected to the inner wall of the storage slot 53 with a spring 55. The spring 55 is sleeved on the outside of the telescopic rods 54. The cover 51 slides in the storage slot 53 and stretches the spring 55. Then the cover 52 is pulled to slide in the storage slot 53 and stretch the spring 55. This makes it easy for the cover 51, the cover 4 and the cover 52 to be properly closed on the cover 22, which is convenient for adapting to the briefcase body 1 after space adjustment.

[0031] The inner wall of the storage slot 53 is provided with guide grooves 56 at both ends. Guide sliders 57 are fixedly connected to both ends of the opposite side of the cover 1 51 and the cover 2 52. The guide sliders 57 are slidably connected in the guide grooves 56. The guide grooves 56 and the guide sliders 57 facilitate the limiting and guiding of the movement of the cover 1 51 and the cover 2 52.

[0032] The briefcase body 1 has a fixing mechanism 6 at its front end. The fixing mechanism 6 includes a fixing block 61 fixedly connected to the upper end of the cover 22. The bottom of the fixing block 61 has a T-shaped slide 62. The bottom ends of the cover 52 are fixedly connected to elastic ropes 63. The bottom of the elastic ropes 63 is connected to a T-shaped slider 64. The T-shaped slider 64 is slidably connected in the T-shaped slide 62. The top of the T-shaped slider 64 is fixedly connected to a magnetic block 1, and the top of the inner wall of the T-shaped slide 62 is fixedly connected to a magnetic block 2. The T-shaped slider 64 is pulled out by the elastic rope 63 and slid from the bottom of the fixing block 61 into the T-shaped slide 62. Under the elastic action of the elastic rope 63 and the spring 55, and with the magnetic attraction of the magnetic blocks 1 and 2, the cover 52 can be properly closed on the cover 22.

[0033] A handle 7 is fixedly connected to the top of the cover 4. An anti-slip sleeve 71 is fixedly fitted onto the outer surface of the handle 7. The anti-slip sleeve 71 is made of rubber, which makes it convenient for users to carry the briefcase.

[0034] It should be noted that the briefcase body 1, pleated surface 21, cover 22 outer surface, connecting block 31, limiting strap 32, lid 4, bag flap 1 51, bag flap 2 52 and handle 7 are all made of artificial leather to improve waterproof performance and reduce costs.

[0035] In practical implementation, when it is necessary to expand the space of the briefcase, the present invention first loosens multiple hand-tightened bolts 36 in sequence. Then, the pleated surface 21 can move the cover 22 away from the briefcase body 1, increasing the storage space between the cover 22 and the briefcase body 1. At this time, the limiting band 32 slides in the limiting groove 33. Then, the hand-tightened bolts 36 are tightened so that they pass through the corresponding limiting holes 35 and are screwed into the threaded grooves 38, thereby limiting and fixing the position of the limiting band 32 and preventing the storage space between the briefcase bodies from continuing to expand. At the same time, the cover 4 is flipped over to cover the top of the briefcase body 1, and the card plate 42 is flipped over so that the magnetic sheet 45 engages with the groove 43 and the magnetic sheet. When the first cover 51 and the second cover 52 are magnetically attracted together, the first cover 51 slides in the storage slot 53 and stretches the spring 55. Then, the second cover 52 is pulled, causing it to slide in the storage slot 53 and stretch the spring 55. After that, the elastic rope 63 pulls out the T-shaped slider 64 and slides it from the bottom of the fixed block 61 into the T-shaped slide 62. The magnetic attraction between the first and second magnetic blocks allows the first cover 51, the cover 4, and the second cover 52 to be properly closed on the cover 22. This achieves the expansion and contraction of the briefcase space, increases the storage capacity, meets the space requirements, and allows for the storage of excessive documents and items, improving the work efficiency of office workers and enhancing the practicality of the briefcase.

[0036] All content not described in detail in this specification is prior art known to those skilled in the art, and the accompanying drawings are structural schematic diagrams used to supplement the text of the specification.

[0037] Although novel embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A space-expandable briefcase, comprising a briefcase body (1), characterized in that: expansion mechanisms (2) are arranged at both ends of the briefcase body (1), the expansion mechanisms (2) comprise pleated surfaces (21) fixedly connected to both ends of the briefcase body (1), and an end of each pleated surface (21) away from the briefcase body (1) is fixedly connected with a cover (22); limiting mechanisms (3) are arranged at both ends of the briefcase body (1), the limiting mechanisms (3) comprise connecting blocks (31) fixedly connected to both ends of the side surface of the briefcase body (1), both ends of each connecting block (31) are fixedly connected with a limiting belt (32), both ends of the cover (22) are provided with limiting grooves (33), the limiting belt (32) is slidingly connected in the limiting groove (33), a plurality of limiting holes (35) are arranged on the limiting belt (32) and are equidistantly arranged, a hand screw bolt (36) is threadedly connected to each corner of the surface of the cover (22), a threaded groove (38) is arranged at one end of the inner wall of the limiting groove (33), and one end of the hand screw bolt (36) is inserted into the limiting hole (35) and the end portion is threadedly connected into the threaded groove (38); a cover surface (4) is arranged on the top of the briefcase body (1); bag cover mechanisms (5) are arranged at both ends of the cover surface (4), the bag cover mechanisms (5) comprise a bag cover one (51) fixedly connected to the upper end of the cover (22), the bag cover one (51) is arranged at the rear end of the cover surface (4), a bag cover two (52) is arranged at the front end of the cover surface (4), and the cover surface (4) is provided with a receiving groove (53) at both ends, the bag cover one (51) is slidingly connected into the receiving groove (53), and the bag cover two (52) is slidingly connected into the receiving groove (53). A rectangular sliding hole (34) is arranged at the opposite side of the limiting groove (33), and a T-shaped limiting block (37) is fixedly connected to one end of the limiting belt (32), and the T-shaped limiting block (37) is slidingly connected into the rectangular sliding hole (34). A notch (41) is arranged at the middle of the bottom of both ends of the cover surface (4), a clamping plate (42) is rotatably connected inside the notch (41), a recess (43) is arranged at the upper end of both sides of the briefcase body (1), a magnetic sheet one (44) is fixedly connected to the inner wall of the recess (43), a magnetic sheet two (45) fixedly connected with the magnetic sheet one (44) is fixedly connected to one end of the clamping plate (42) close to the recess (43), the magnetic sheet two (45) is clamped and connected into the recess (43), and a pulling groove (46) is arranged at the bottom of the clamping plate (42). ​ ​ 2. The spatially scalable briefcase of claim 1, wherein: ​ 3. The spatially scalable briefcase of claim 1, wherein: ​ 4. The spatially scalable briefcase of claim 1, wherein: The inner wall of the accommodating groove (53) is fixedly connected with telescopic rods (54), the telescopic rods (54) are multiple and are equally spaced, a spring (55) is fixedly connected between one end of the cover one (51) and the inner wall of the accommodating groove (53), a spring (55) is fixedly connected between one end of the cover two (52) and the inner wall of the accommodating groove (53), the spring (55) is sleeved outside the telescopic rod (54), guide sliding grooves (56) are formed at both ends of the inner wall of the accommodating groove (53), guide sliding blocks (57) are fixedly connected at both ends of the opposite side of the cover one (51) and the cover two (52), and the guide sliding blocks (57) are slidingly connected in the guide sliding grooves (56).

5. The spatially scalable briefcase of claim 1, wherein: The front end of the briefcase body (1) is provided with a fixing mechanism (6), the fixing mechanism (6) comprises a fixing block (61) fixedly connected to the upper end of the cover (22), a T-shaped sliding channel (62) is formed in the bottom of the fixing block (61), elastic ropes (63) are fixedly connected at both ends of the bottom of the cover two (52), T-shaped sliding blocks (64) are connected to the bottom of the elastic ropes (63), and the T-shaped sliding blocks (64) are slidingly connected in the T-shaped sliding channel (62).

6. The spatially scalable briefcase of claim 1, wherein: The top of the cover (4) is fixedly connected with a handle (7), and a non-slip sleeve (71) is fixedly sleeved on the outer surface of the handle (7).

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