Capacity expansion package

Abstract

The expansion bag comprises a main bag body and shoulder straps arranged on the main bag body, a bendable expansion part is arranged at the upper end of the main bag body, and the expansion part is formed by upwards extending the fabric of the main bag body; a first fixing device is arranged on the shoulder strap, and a second fixing device matched with the first fixing device is arranged on the expansion part. According to the use principle, when the expansion part is not used, the main bag body is supported and fixed through the first fixing device, and deformation of the main bag body is prevented; when the expansion part is used, through cooperation of the first fixing device and the second fixing device, deformation and bending of the expansion part are avoided, and the user experience feeling is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of bags, in particular to a capacity expansion bag. Background Art

[0002] Luggage is a general term for various bags used to carry things. With the continuous improvement of people's living and consumption levels, luggage has become an indispensable item for people's daily travel. And people have higher and higher requirements for the practicality of backpacks. However, in life, we often encounter such situations: when people go out, some items are light in weight but large in size, such as large balls, sun hats, etc., but because they take up a lot of space, and the existing backpack capacity is fixed, they cannot be placed in small and medium-sized backpacks, so they can only choose large backpacks; there are also photography enthusiasts, professional photography equipment and equipment are of various varieties, a set of photography equipment often needs to take up the space of a whole bag, and there is nowhere to put daily necessities such as clothes, so they need to carry an extra bag, causing great inconvenience during the journey.

[0003] For example, the authorization announcement number CN209463523U discloses an expandable multifunctional bag, including a bag body, an expandable bag on the top of the bag body that can be folded when not in use and opened when in use, the bottom of the expandable bag is connected to the top of the bag body; a sealing device is provided at the mouth of the expandable bag; and a fixing device for fixing the expandable bag is provided on the bag body. However, the utility model does not have a support design for the expandable bag, and it completely needs the items in the expandable bag for support. When a flexible object is installed in the expandable bag, the expandable bag cannot remain upright, which affects the user's use. Summary of the invention

[0004] The problem to be solved by the utility model is to provide a capacity expansion package, which can support the capacity expansion part when the capacity expansion part is in use, and optimize the user experience.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an expansion bag, including a main bag body and a shoulder strap arranged on the main bag body; a bendable expansion part is arranged on the upper end of the main bag body, and the expansion part is formed by the fabric of the main bag body extending upward; a first fixing device is arranged on the shoulder strap, and a second fixing device matching the first fixing device is arranged on the expansion part; the first fixing device includes a male buckle, and the second fixing device includes a first female buckle matching the male buckle. The use principle of the utility model is: when the expansion part is not in use, the main bag body is supported and fixed by the first fixing device to prevent the main bag body from deformation; when the expansion part is in use, the expansion part is prevented from deformation and bending through the coordinated cooperation of the first fixing device and the second fixing device, thereby optimizing the user experience.

[0006] As an improvement, the shoulder strap includes a main strap and mounting straps arranged on both sides of the main strap, and the main strap is provided with day buckles on both sides. One end of the mounting strap is fixed to the main bag body, and the other end of the mounting strap passes through the day buckle and is connected to the male buckle.

[0007] As an improvement, a first connecting belt is provided on the expansion part, one end of the first connecting belt is fixed on the expansion part, and the first female buckle is provided on the other end of the first connecting belt.

[0008] As an improvement, the main package body is provided with a second female buckle matching the male buckle.

[0009] As an improvement, a second connecting belt is provided on the main package body, one end of the second connecting belt is fixed on the main package body, and the second female buckle is fixed on the other end of the second connecting belt.

[0010] The beneficial effects of the utility model are as follows: when the expansion part is not in use, the user connects the male buckle and the second female buckle for use; when the expansion part is in use, the user cooperates with the first female buckle and the male buckle to keep the expansion part upright in use, avoiding bending of the expansion part due to gravity or internal objects, thereby optimizing the user's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the expansion part in the closed state.

[0012] Figure 2 This is a schematic diagram of the expansion unit in the expanded state.

[0013] Figure 3 It is a schematic diagram of the back side of the utility model.

[0014] Figure 4 It is a schematic diagram of the male buckle and the first female buckle in the separated state.

[0015] Figure 5 It is a top view of the utility model.

[0016] Figure 6 This is a schematic diagram of the male buckle bypassing the expansion part.

[0017] Figure 7 Schematic diagram of the cooperation between the male buckle and the second female buckle.

[0018] Figure 8 It is a front view of the utility model after the male buckle and the second female buckle are matched.

[0019] Explanation of the numbers in the figure: 1. main package body; 2. expansion part; 3. main belt; 4. installation belt; 5. second connecting belt; 6. first fixing device; 61. male buckle; 62. second female buckle; 7. first connecting belt; 71. first female buckle. Implementation

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings of the specification;

[0021] like Figures 1 to 8 As shown, an expansion bag comprises a main bag body 1 and shoulder straps arranged on the main bag body 1, the shoulder straps are arranged on both sides of the main bag body 1, a foldable expansion part 2 is arranged on the upper end of the main bag body 1, the expansion part 2 is formed by extending upward from the fabric of the main bag body 1, the main bag body 1 is provided with shoulder straps, the shoulder straps are provided with a first fixing device 6, and the expansion part 2 is provided with a second fixing device matching the first fixing device 6; the shoulder straps comprise a main strap 3, mounting straps 4 arranged on both sides of the main strap 3 and a second connecting strap 5 arranged on the main bag body 1, one end of the mounting strap 4 is fixed to the main bag body 1, both ends of the main strap 3 are provided with day buckles, the other end of the mounting strap 4 passes through the day buckle and is connected to the first connecting strap 7; the first fixing device 6 comprises a male buckle 61 arranged on one end of the mounting strap 4 and a second female buckle 62 arranged on one end of the second connecting strap 5, the male buckle 61 matches the second female buckle 62; the male buckle 61 and the second female buckle 62 are connected when the expansion part 2 is not in use. The second fixing device includes a first connecting belt 7 arranged on the expansion part 2 and a first female buckle 71 arranged at one end of the first connecting belt 7, and the first female buckle 71 matches the male buckle 61; one end of the first connecting belt 7 is fixedly connected to the expansion part 2. When the expansion part 2 is in use, the user loosens the male buckle 61 and the second female buckle 62, and fastens the male buckle 61 and the first female buckle 71 together to provide support for the expansion part 2, prevent the expansion part 2 from bending on the main package body 1, and prevent the expansion part 2 and the main package body 1 from squeezing each other, which affects the internal use volume of the expansion part 2 and the main package body 1.

[0022] The use principle of the utility model is as follows: when the expansion part 2 is not in use, the male buckle 61 and the first female buckle 71 cooperate with each other, and the expansion part 2 is bent on the main package body 1 without occupying too much volume; when the expansion part 2 is in use, the expansion part 2 is unfolded, the male buckle 61 and the first female buckle 71 are loosened, and the male buckle 61 is inserted into the second female buckle 62, so that the expansion part 2 can be in an upright state, avoiding the expansion part 2 from bending downward due to the flexible object loaded in the expansion part 2, thereby optimizing the user experience.

Claims

1. An expandable bag, comprising a main bag body and a shoulder strap arranged on the main bag body, wherein a bendable expandable portion is arranged at the upper end of the main bag body, and the expandable portion is formed by extending upward from the fabric of the main bag body; characterized in that: The shoulder strap is provided with a first fixing device, and the expansion portion is provided with a second fixing device matching the first fixing device; the first fixing device includes a male buckle, and the second fixing device includes a first female buckle matching the male buckle.

2. The expansion pack according to claim 1, characterized in that: The shoulder strap comprises a main strap and mounting straps arranged on both sides of the main strap, and day buckles are arranged on both sides of the main strap. One end of the mounting strap is fixed on the main bag body, and the other end of the mounting strap passes through the day buckle and is connected with the male buckle.

3. The expansion pack according to claim 1, characterized in that: The expansion part is provided with a first connecting belt, one end of the first connecting belt is fixed on the expansion part, and the first female buckle is provided at the other end of the first connecting belt.

4. The expansion pack according to claim 1, characterized in that: The main package body is provided with a second female buckle matching the male buckle.

5. The expansion pack according to claim 4, characterized in that: The main package body is provided with a second connecting belt, one end of the second connecting belt is fixed on the main package body, and the second female buckle is fixed on the other end of the second connecting belt.

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