Backpack capable of expanding capacity of main body

Abstract

The utility model relates to the technical field of backpack processing, in particular to a backpack capable of expanding the capacity of a main body, which comprises a main body, the main body comprises a bag body, the bag body is connected to the surface of the main body, the two ends of the main body are connected with bag openings, an expanding frame is connected in the main body, the back of the main body is connected with straps, and the bottom end of the expanding frame is connected with a panel. The top end of the panel is connected with two supporting strips, and one side of each supporting strip is connected with a limiting structure. The main body stores frequently-used articles through the bag body and the bag opening, the capacity in the main body is expanded through the expansion frame, the expansion frame can be unfolded to support the wizened main body, meanwhile, the contents in the main body are supported and protected, extrusion of the contents by external force is reduced, the supporting strips are close to each other left and right, and the bottom of the backpack is supported; the stability of the main body can be improved, the unfolded supporting legs are limited through the limiting structures, and therefore the unfolded panel and the unfolded bottom panel are fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of backpack processing, in particular to a backpack with expandable main body capacity. Background Art

[0002] With the rapid improvement of people's living standards, people need to use backpacks to carry some daily necessities in their daily life and during vacations. However, in actual use, when the backpack needs to hold large items or the user needs to carry a lot of items when traveling, the backpack does not have enough space to wrap them. On the other hand, when the backpack does not need to hold large items or is used for daily travel, the backpack will look bloated and unsightly due to its large size, making it difficult to carry. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a backpack with expandable main body capacity, which has the following advantages.

[0004] In order to achieve the above-mentioned functional purpose, the utility model provides the following technical solution: a backpack with expandable main body capacity, including a main body, characterized in that: the main body includes a bag body, the bag body is connected to the surface of the main body, and both ends of the main body are connected to bag openings, an expansion frame is connected inside the main body, a shoulder strap is connected to the back of the main body, the bottom end of the expansion frame is connected to a panel, the top of the panel is connected to two support bars, and one side of the support bar is connected to a limiting structure.

[0005] Furthermore, the expansion rack includes a bottom panel, which is close to one side of the panel. The bottom panel and the panel are located at the bottom end of the main body. The bottom panel and the panel support the bottom end of the main body. The bottom of the bottom panel is the same as the panel, and a support bar is connected to it at the bottom. One side of the support bar is connected with a through hole, and a main rod passes through the through hole. Two supporting feet are connected to the main rod, and one side of the supporting foot is connected with an external supporting foot. The two external supporting feet are connected to a handle bar for connection. The supporting feet are also connected through the handle bar, and the supporting feet are connected to a fixing column close to the side of the support bar.

[0006] Furthermore, the limiting structure includes a connecting end, a limiting ring, a positioning ring, a limiting column, and a stud. The connecting end is connected to one side of the supporting foot, the limiting ring is connected to the side of the connecting end, and the positioning ring, the limiting column, and the stud are connected to the connecting end and one side of the limiting ring in order from left to right.

[0007] Furthermore, a deformation column is provided on the annular side of the positioning ring of the limiting structure, a spring is connected to the annular outer side of the limiting column, a ladder column is provided on one side of the spring, and a nut column is provided on one side of the ladder column.

[0008] Furthermore, the annular side surface of the deformation column is connected with a deformation groove, and the deformation grooves include but are not limited to 8.

[0009] Furthermore, a storage strip is connected to the bottom of the main body, and the storage strip includes but is not limited to a strip, one end of the storage strip is connected to a Velcro, and the storage strips on the same side are connected by the Velcro. When the expansion rack is not in use, the Velcro end of the storage strip can be lifted to lift the fabric at the bottom of the main body, and the Velcro is placed above the main rod for pasting, so as to gather the fabric at the bottom of the main body and fold the space at the bottom of the main body. When the capacity of the main body needs to be expanded, the pasted Velcro can be loosened to unfold the expansion rack.

[0010] Furthermore, Velcro strips are connected to both sides of the main body, and the Velcro strips limit the folded expansion frame.

[0011] Compared with the existing technology, the advantages of the present invention are: the main body stores frequently used items through the bag body and the bag opening, the capacity of the main body is expanded through the expansion frame, the expansion frame can be unfolded to support the deflated main body, and at the same time support and protect the contents of the main body to reduce the contents from being squeezed by external forces, the support bars are close to each other on the left and right to support the bottom of the backpack, which can increase the stability of the main body, and the unfolded support feet are limited by the limiting structure, thereby fixing the unfolded panel and the bottom panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of a backpack with expandable main body capacity according to the present invention;

[0013] Figure 2 This is a side structural diagram of an expansion frame of a backpack capable of expanding the main body capacity according to the present invention;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of an expansion frame of a backpack capable of expanding the main body capacity of the present invention;

[0015] Figure 4 This is a schematic diagram of the bottom structure of a backpack with expandable main body capacity according to the present invention;

[0016] Figure 5 This is a schematic diagram of the limiting structure of a backpack with expandable main body capacity according to the present invention.

[0017] The figure is numeraled as follows: main body 1, bag body 2, bag opening 3, expansion frame 4, shoulder strap 5, panel 41, support bar 400, limiting structure 6, connecting end 60, limiting ring 61, positioning ring 62, limiting column 63, stud 64, bottom panel 40, main rod 43, supporting foot 44, outer supporting foot 45, hand strip 42, deformation column 7, ladder column 8, nut column 9. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0019] For examples, see Figure 1-4, a backpack with expandable main body capacity, including a main body 1, characterized in that: the main body 1 includes a bag body 2, the bag body 2 is connected to the surface of the main body 1, both ends of the main body 1 are connected to a bag opening 3, an expansion frame 4 is connected inside the main body 1, and a shoulder strap 5 is connected to the back of the main body 1, the bottom end of the expansion frame 4 is connected to a panel 41, the top of the panel 41 is connected to two support bars 400, and one side of the support bar 400 is connected to a limiting structure 6; the expansion frame 4 includes a bottom panel 40, the bottom panel 40 is close to one side of the panel 41, the bottom panel 40 and the panel 41 are located at the bottom end of the main body 1, the bottom panel 40 and the panel 41 support the bottom end of the main body 1, and the bottom of the bottom panel 40 is connected to the support bar 400 the same as the panel 41. One side of the support bar 400 is connected with a through hole, and a main rod 43 passes through the through hole. Two supporting feet 44 are connected to the main rod 43, and one side of the supporting feet 44 is connected to an outer supporting foot 45. The two outer supporting feet 45 are connected to the handle bar 42 for connection. The supporting feet 44 are also connected through the handle bar 42. The supporting feet 44 are connected to the fixing column 10 on the side close to the support bar 400; the limiting structure 6 includes a connecting end 60, a limiting ring 61, a positioning ring 62, a limiting column 63, and a stud 64. The connecting end 60 is connected to one side of the supporting foot 44, and the limiting ring 61 is connected to the side of the connecting end 60. The positioning ring 62, the limiting column 63, and the stud 64 are arranged in order from left to right to connect the connecting end 60 and the limiting ring 61. Side connection; the annular side surface of the positioning ring 62 of the limiting structure 6 is provided with a deformation column 7, the annular outer side of the limiting column 63 is connected to a spring, one side of the spring is provided with a ladder column 8, and one side of the ladder column 8 is provided with a nut column 9; the annular side surface of the deformation column 7 is connected with a deformation groove 71, and the deformation grooves 71 are not limited to 8, and one end of the nut column 9 is located on the inner side of the large diameter end of the ladder column 8; the bottom of the main body 1 is connected with a storage strip 51, and the storage strip 51 is not limited to 4, and one end of the storage strip 51 is connected with a Velcro, and the storage strip 51 on the same side is connected by Velcro. When the expansion rack 4 is not in use, the Velcro end of the storage strip 51 can be lifted, thereby lifting the fabric at the bottom of the main body 1, and the Velcro is placed above the main rod 43 for The velcro strips 20 are connected on both sides of the main body 1, and the velcro strips 20 limit the folded expansion frame 4. The support feet 44, outer support feet 45, and support bars 400 on both sides of the folded expansion frame 4 are close to each other. The velcro strips 20 cross-fit and bind the support feet 44, outer support feet 45, and support bars 400 that are close to each other together, thereby cooperating with the storage strip at the bottom to limit the above structure; the bag body 2 and the bag opening 3 are connected with magnetic buckles on the side, and the magnetic buckles connect the outer side of the bag opening 3 to one side of the main body 1, thereby gathering the outward-extended bag opening 3.

[0020] Working principle: The main body 1 stores frequently used items through the bag body 2 and the bag opening 3, and expands the capacity of the main body through the expansion frame 4. The expansion frame can be unfolded to support the deflated main body, and at the same time support and protect the contents of the main body to reduce the contents from being squeezed by external forces. Push the handle bar 42 to both sides, drive the support feet 44 and the outer support feet 45 to unfold, so that the panel 41 and the bottom panel 40 are spliced together. The support bars are close to each other on the left and right to support the bottom of the backpack, which can increase the stability of the main body and prevent the main body from becoming soft and falling sideways. The limiting structure 6 on one side of the support bar 400 is fixed in the fixing column 10 of the support foot 44, and the unfolded support foot is limited by the limiting structure 6, so as to fix the unfolded panel and the bottom panel. By holding the nut column 9 and screwing it on the side of the stud 64 by hand, the ladder column 8 is pushed to the side of the spring, and then the deformation column 7 is pushed to the side of the limiting ring 61. The deformation column 7 is stretched outward to fit tightly against the fixing column 10, so that the support foot and the support bar are limited.

[0021] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0022] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A backpack with expandable main body capacity, comprising a main body (1), characterized in that: The main body (1) comprises a bag body (2), the bag body (2) is connected to the surface of the main body (1), both ends of the main body (1) are connected to bag openings (3), the main body (1) is internally connected to an expansion rack (4), the back of the main body (1) is connected to a shoulder strap (5), the bottom end of the expansion rack (4) is connected to a panel (41), the top end of the panel (41) is connected to two support bars (400), and one side of the support bar (400) is connected to a limiting structure (6).

2. The backpack with expandable main body capacity according to claim 1, characterized in that: The expansion rack (4) includes a bottom panel (40), the bottom panel (40) is close to one side of the panel (41), the bottom panel (40) and the panel (41) are located at the bottom end of the main body (1), and the bottom panel (40) and the panel (41) support the bottom end of the main body (1). The bottom panel (40) is the same as the panel (41), and is connected to a support bar (400) at its bottom. One side of the support bar (400) is connected to a through hole, and a main rod (43) passes through the through hole. Two supporting feet (44) are connected inside the main rod (43), and one side of the support foot (44) is connected to an outer supporting foot (45). The two outer supporting feet (45) are connected to a handle bar (42). The support foot (44) is also connected through the handle bar (42). The support foot (44) is connected to a fixing column (10) near the side of the support bar (400).

3. The backpack with expandable main body capacity according to claim 1, characterized in that: The limiting structure (6) comprises a connecting end (60), a limiting ring (61), a positioning ring (62), a limiting column (63), and a stud (64); the connecting end (60) is connected to one side of the supporting foot (44); the limiting ring (61) is connected to the side of the connecting end (60); and the positioning ring (62), the limiting column (63), and the stud (64) are connected to one side of the connecting end (60) and the limiting ring (61) in order from left to right.

4. The backpack with expandable main body capacity according to claim 3, characterized in that: A deformation column (7) is provided on the annular side surface of the positioning ring (62) of the limiting structure (6), a spring is connected to the annular outer side of the limiting column (63), a ladder column (8) is provided on one side of the spring, and a nut column (9) is provided on one side of the ladder column (8).

5. The backpack with expandable main body capacity according to claim 4, characterized in that: The annular side surface of the deformation column (7) is connected to a deformation groove (71), and the deformation grooves (71) include but are not limited to 8.

6. The backpack with expandable main body capacity according to claim 1, characterized in that: The bottom of the main body (1) is connected with a storage strip (51), and the storage strips (51) include but are not limited to 4 strips. One end of the storage strip (51) is connected with a Velcro, and the storage strips (51) on the same side are connected by the Velcro. When the expansion rack (4) is not used, the Velcro end of the storage strip (51) can be lifted to lift the bottom fabric of the main body (1), and the Velcro is placed on the main rod (43) for pasting, thereby gathering the bottom fabric of the main body (1) and folding the space at the bottom of the main body (1). When the capacity of the main body needs to be expanded, the pasted Velcro can be loosened to unfold the expansion rack.

7. The backpack with expandable main body capacity according to claim 1, characterized in that: Both sides of the main body (1) are connected with Velcro strips (20), and the Velcro strips (20) limit the position of the folded expansion frame (4).

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