Backpack

Abstract

The invention provides a knapsack which comprises a knapsack body and a cover body, and the cover body is used for covering or opening an opening of the knapsack body; the bracket device comprises a base, a supporting piece and a tray, the base is arranged in the inner cavity of the bag body, the first end of the supporting piece is rotationally connected with the base so that the second end of the supporting piece can be close to or away from the base, the second end of the supporting piece is rotationally connected with the tray, and the tray is used for detachably fixing the mobile terminal equipment. According to the backpack disclosed by the invention, a user can detachably fix the mobile terminal equipment on the tray, so that the mobile terminal equipment is stored in the backpack body; a user can adjust the position and the angle of the mobile terminal equipment through the bracket device; the mobile terminal equipment does not need to be taken out of the bag body and then put back, a user can use the mobile terminal equipment conveniently, the office efficiency of the mobile terminal equipment is effectively improved, the use experience of the user is improved, and the mobile terminal equipment bag is particularly suitable for a worker to check corresponding power equipment by using a computer in the power industry.

Description

Technical Field

[0001] The present invention relates to the technical field of backpacks, and in particular to a backpack. Background Art

[0002] With the development of society, people have an increasing demand for mobile terminal devices such as laptops and tablets in their work and life. In order to facilitate the carrying of mobile terminal devices, backpacks on the market are generally provided with interlayers to place mobile terminal devices. However, for example, when working outside in the power industry, users need to stand and use computers to check related power equipment. Users take out mobile terminal devices from backpacks, place them in place, open them for use, and after use, they need to put the mobile terminal devices back into the interlayer of the backpack. The backpacks in the prior art are not convenient to use, which is not conducive to improving office efficiency and affects the user experience. Summary of the invention

[0003] The main purpose of the present invention is to provide a backpack to solve at least one of the technical problems in the prior art, namely, that the backpack is not convenient enough, is not conducive to improving office efficiency, and has a poor user experience.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a backpack, comprising: a bag body and a cover body, the cover body is used to cover or open the opening of the bag body; a bracket device, comprising a base, a support member and a tray, the base is arranged in the inner cavity of the bag body, the first end of the support member is rotatably connected to the base so that the second end of the support member is close to or away from the base, the second end of the support member is rotatably connected to the tray, and the tray is used to detachably fix a mobile terminal device.

[0005] Furthermore, the base includes a bottom plate and a rotating frame, the bottom plate is fitted on the inner wall of the package body, the rotating frame is rotatably connected to the bottom plate so that the rotating frame rotates in a front-to-rear direction, and the first end of the support member is rotatably connected to the rotating frame.

[0006] Furthermore, a flange is provided on the lower side of the tray, and the flange is bent in a direction away from the base.

[0007] Furthermore, the left and right sides of the tray are slidably connected with movable clamps, and the movable clamps on both sides are close to each other to clamp the mobile terminal device; or, either the left or right side of the tray is slidably connected with a movable clamp, and the other side is fixedly connected with a fixed clamp, and the movable clamp is close to the fixed clamp to clamp the mobile terminal device.

[0008] Furthermore, a positioning piece is provided on the tray, and a slide groove extending in the left-right direction is provided on the positioning piece, and the movable clamp is slidably connected in the slide groove.

[0009] Furthermore, the movable clip is provided with a limiting groove to be inserted and limited with the mobile terminal device.

[0010] Furthermore, the tray is provided with a plurality of weight-reducing holes.

[0011] Furthermore, part of the edge of the cover body is rotatably connected to the package body, and the remaining edge of the cover body is detachably connected to the package body.

[0012] Furthermore, a shoulder strap and an upper strap are provided on an outer wall of the bag body away from the cover body, and the upper strap is used to tie and fix the shoulder strap.

[0013] Furthermore, a lower strap is provided on the outer wall of the bag body away from the cover body to be tied and fixed to the waist of the user.

[0014] The backpack of the present invention has a bag body that can be closed and opened by a cover body, and a bracket device is arranged in the bag body cavity, and the base is arranged in the bag body, so that the user can detachably fix the mobile terminal device on the tray, and then store the mobile terminal device in the bag body; the first end of the support member of the bracket device is rotatably connected to the base, and the second end of the support member is rotatably connected to the tray, so that the tray can rotate around the first end of the support member to get close to or away from the base, and can also rotate around the second end of the support member to adjust the angle by self-rotation, so that the user can adjust the position and angle of the mobile terminal device; when the user needs to use the mobile terminal device, it is only necessary to open the cover body and adjust the position and angle of the tray. When the user does not need to use the mobile terminal device, it is only necessary to fold the tray close to the base and then close the cover body, without taking the mobile terminal device out of the bag body and then putting it back. It is more convenient for the user to use the mobile terminal device, effectively improving the office efficiency of using the mobile terminal device and enhancing the user's experience. It is particularly suitable for workers in the power industry to use computers to check corresponding power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure of a backpack provided in an embodiment of the present invention (the cover is in an open state);

[0017] Figure 2 A schematic diagram of the structure of a base and a support member provided in an embodiment of the present invention;

[0018] Figure 3 A first structural schematic diagram of a bracket device provided in an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of the structure of a tray provided in an embodiment of the present invention;

[0020] Figure 5 A schematic diagram of the structure of a movable clamp and a positioning member provided in an embodiment of the present invention;

[0021] Figure 6 The second structural schematic diagram of the bracket device provided in the embodiment of the present invention.

[0022] The above drawings include the following reference numerals:

[0023] 1. Bag body; 11. Shoulder strap; 12. Upper strap; 13. Lower strap; 2. Cover; 3. Bracket device; 31. Base; 311. Bottom plate; 312. Turntable; 3121. First connecting block; 313. Rotating shaft; 32. Support member; 33. Tray; 331. Flange; 332. Movable clamp; 3321. Limiting groove; 333. Positioning member; 3331. Slide groove; 334. Weight-reducing hole; 335. Second connecting block. DETAILED DESCRIPTION

[0024] 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 described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0027] Combination Figures 1 to 6 As shown in the figure, the corresponding directions of front, back, up, down, left and right are marked so that the orientation relationship between the various parts of the backpack can be more clearly expressed in the manual.

[0028] A first aspect of the present invention provides a backpack, Figures 1 to 3 As shown, it includes: a bag body 1 and a cover body 2, the cover body 2 is used to cover or open the opening of the bag body 1; a bracket device 3, including a base 31, a support member 32 and a tray 33, the base 31 is arranged in the inner cavity of the bag body 1, the first end of the support member 32 is rotatably connected to the base 31, so that the second end of the support member 32 is close to or away from the base 31, the second end of the support member 32 is rotatably connected to the tray 33, and the tray 33 is used for detachably fixing the mobile terminal device.

[0029] The package body 1 can be designed in a specific shape according to the needs. In this embodiment, Figure 1 As shown, the bag body 1 is shaped like a rectangular box and has an opening facing the rear, which allows the bag body 1 to be placed vertically (such as Figure 1 When the user opens the cover 2, the mobile terminal device on the tray 33 can be directly observed from the opening, which facilitates the user to directly use the corresponding functions of the mobile terminal device. The cover 2 can be connected to the bag 1 by any structure such as a zipper, a buckle, a magnetic attraction, etc., so that the cover 2 can cover or open the opening of the bag 1. A base 31 is provided in the inner cavity of the bag 1, and the base 31 can be completely fixedly installed on the inner wall of the bag 1; combined with Figure 2As shown, the support member 32 is a connecting rod structure, and a hinged shaft or axle pin or other structures are provided at both ends thereof, wherein the first end of the support member 32 is rotatably connected to the base 31, and the second end of the support member 32 is rotatably connected to the tray 33. When the support member 32 rotates around the hinged shaft or axle pin or other structures at the first end, the second end of the support member 32 and the tray 33 will move closer to or away from the base 31. When the tray 33 rotates around the hinged shaft or axle pin or other structures at the second end of the support member 32, the tray 33 and the mobile terminal device rotate together, thereby adjusting the angle of the mobile terminal device. The mobile terminal device can be a tablet computer, a mobile phone, a laptop computer, etc., and can be detachably fixed on the tray 33 by, for example, clamping, snapping, magnetic attraction, etc.

[0030] It can be understood that a certain damping can be set at the first end and the second end of the support member 32 to ensure that the tray 33 can remain stationary at the corresponding position after the position and angle are adjusted by the support member 32, and the tightness can also be adjusted by components such as screws to adjust the damping size; or a scale groove and a protrusion can be set to cooperate, so that after the two objects are rotated to a certain angle, the protrusion and the corresponding scale groove are limited and cooperated (this solution is not shown in the figure).

[0031] The backpack of the present invention has a bag body 1 that can be closed and opened by a cover body 2, and a bracket device 3 is arranged in the inner cavity of the bag body 1, and a base 31 is arranged in the bag body 1. The user can detachably fix the mobile terminal device on the tray 33, and then store the mobile terminal device in the bag body 1; the first end of the support member 32 of the bracket device 3 is rotatably connected to the base 31, and the second end of the support member 32 is rotatably connected to the tray 33, so that the tray 33 can rotate around the first end of the support member 32 to get closer to or away from the base 31, and can also rotate around the second end of the support member 32 to adjust the angle by self-rotation. So that the user can adjust the position and angle of the mobile terminal device; when the user needs to use the mobile terminal device, he only needs to open the cover 2 and adjust the position and angle of the tray 33. When the user does not need to use the mobile terminal device, he only needs to fold the tray 33 close to the base 31 and then cover the cover 2. There is no need to take the mobile terminal device out of the bag 1 and put it back. It is more convenient for the user to use the mobile terminal device, which effectively improves the office efficiency of using the mobile terminal device and enhances the user experience. It is especially suitable for workers in the power industry to use computers to check corresponding power equipment.

[0032] Furthermore, the base 31 includes a bottom plate 311 and a rotating frame 312, the bottom plate 311 is fitted on the inner wall of the package body 1, the rotating frame 312 is rotatably connected to the bottom plate 311 so that the rotating frame 312 rotates in the front and rear directions, and the first end of the support member 32 is rotatably connected to the rotating frame 312.

[0033] Combination Figures 1 to 3 As shown, the base 31 in this embodiment is not completely fixed in the package body 1. The bottom plate 311 of the base 31 is closely connected to the inner wall of the package body 1. The rotating frame 312 is rotatably connected to the bottom plate 311 through the rotating shaft 313, so that the rotating frame 312 can rotate around the front and rear directions. A first connecting block 3121 is provided on the rotating frame 312, and a second connecting block 335 is provided on the tray 33. The first end of the support member 32 is rotatably connected to the first connecting block 3121 through a hinged rotating shaft or an axle pin and other structures, and the second end of the support member 32 is rotatably connected to the second connecting block 335 through a hinged rotating shaft or an axle pin and other structures. When the rotating frame 312 rotates, it will drive the mobile terminal device to rotate through the support member 32 and the tray 33.

[0034] In this way, after the mobile terminal device is detachably fixed on the tray 33, the tray 33 can be rotated around the second end of the support member 32 to make the mobile terminal device rotate around the left and right directions to adjust the angle, and the support member 32 can be rotated around the first end of the support member 32 to make the mobile terminal device move in the front and back directions. The rotating frame 312 can also be rotated relative to the bottom plate 311 to make the mobile terminal device rotate around the front and back directions to adjust the angle, thereby realizing flexible adjustment of the position and angle of the mobile terminal device, making it convenient for users to adjust the viewing angle and screen position.

[0035] Furthermore, a flange 331 is provided on the lower side of the tray 33 , and the flange 331 is bent in a direction away from the base 31 .

[0036] Combination Figure 3 , Figure 4 and Figure 6 As shown, a flange 331 is provided on the lower side of the tray 33. The flange 331 can be optionally provided in multiple numbers so as to provide a more comprehensive support effect for the mobile terminal device. The flange 331 is L-shaped as a whole, and its end is bent in a direction away from the base 31, so that the mobile terminal device can fall on the flange 331.

[0037] In this way, by providing the flange 331 , the mobile terminal device can be directly placed on the flange 331 , or the mobile terminal device can be directly removed from the flange 331 , thereby achieving a relatively simple and detachable fixation between the mobile terminal device and the tray 33 .

[0038] In one embodiment, in combination Figure 4 and Figure 6 As shown, the left and right sides of the tray 33 are both slidably connected with movable clamps 332 , and the movable clamps 332 on both sides are close to each other to clamp the mobile terminal device.

[0039] The two movable clips 332 are respectively slidably connected to the left and right sides of the tray 33 (more movable clips 332 can also be set to increase the firmness of fixing the mobile terminal device). The movable clips 332 on the left and right sides slide towards each other to clamp the mobile terminal device. Conversely, the movable clips 332 on the left and right sides slide away from each other to release the mobile terminal device.

[0040] In another embodiment, a movable clamp 332 is slidably connected to either the left or right side of the tray 33, and a fixed clamp is fixedly connected to the other side, and the movable clamp 332 is close to the fixed clamp to clamp the mobile terminal device (not shown in the figure of this embodiment).

[0041] The fixed clamp is relatively fixedly arranged on one side of the tray 33. When the movable clamp 332 slides close to the fixed clamp, the mobile terminal device is clamped. Conversely, when the movable clamp 332 slides away from the fixed clamp, the mobile terminal device is released.

[0042] In this way, by arranging movable clips 332 on both sides of the tray 33, or arranging the movable clips 332 and the fixed clips on the left and right sides respectively, mobile terminal devices of different sizes can be detachably fixed on the tray 33, with better stability.

[0043] In the above two embodiments (i.e., movable clamps 332 are provided on both sides of the tray 33, or the movable clamps 332 and the fixed clamps are provided on the left and right sides respectively), an elastic member (such as a spring, a rubber block, etc.) can be provided between the movable clamp 332 and the tray 33, so that the movable clamp 332 can more stably clamp mobile terminal devices of different sizes.

[0044] Furthermore, a positioning member 333 is provided on the tray 33 , and a sliding groove 3331 extending along the left-right direction is provided on the positioning member 333 , and the movable clamp 332 is slidably connected in the sliding groove 3331 .

[0045] Combination Figures 4 to 6 As shown, the positioning member 333 is connected to the tray 33 by means of bolts, clamping, etc., and corresponds to the position of the movable clamp 332. A slide groove 3331 is provided on the positioning member 333. The movable clamp 332 is L-shaped as a whole, and part of its structure is slidably arranged in the slide groove 3331, so that the other part of the movable clamp 332 extends backward to a position capable of clamping the mobile terminal device. Here, an elastic member such as a spring, a rubber block, etc. can also be arranged between the movable clamp 332 and the positioning member 333 as needed to provide a certain clamping force.

[0046] In this way, the sliding groove 3331 on the positioning member 333 can make the sliding of the movable clamp 332 more stable and controllable, have a certain degree of guidance, and improve the use experience of the movable clamp 332.

[0047] Furthermore, a limiting groove 3321 is provided on the movable clip 332 to limit the position of the movable clip 332 with the mobile terminal device.

[0048] Combination Figures 4 to 6 As shown, the part of the movable clamp 332 outside the slide groove 3331 (i.e., the part for contacting the mobile terminal device to achieve clamping) is provided with a limiting groove 3321, and the edge of the mobile terminal device can be inserted into the limiting groove 3321 to form a plug-in limit. In addition, a limiting groove can also be provided on the fixed clamp, which can also play a certain limiting role.

[0049] In this way, the limiting groove 3321 can provide a better limiting and fixing effect for the mobile terminal device, thereby improving the user experience.

[0050] Preferably, a plurality of weight-reducing holes 334 are provided on the tray 33 .

[0051] Combination Figure 4 As shown, there are three weight-reducing holes 334, all of which are in the shape of rectangular holes. In order to improve the supporting stability for the mobile terminal device, the size of the tray 33 is usually similar to the size of the mobile terminal device, which causes the weight of the tray 33 to increase due to the increase in size. Therefore, through the design of multiple weight-reducing holes 334, the weight of the tray 33 can be reduced without reducing the supporting stability, thereby reducing the burden on the user after putting on the backpack, and at the same time it is beneficial to the heat dissipation performance of the mobile terminal device.

[0052] Preferably, part of the edge of the cover body 2 is rotatably connected to the bag body 1 , and the remaining edge of the cover body 2 is detachably connected to the bag body 1 .

[0053] Combination Figure 1 As shown, in the present embodiment, the lower edge of the cover body 2 is connected to the lower edge of the bag body 1 by a flexible fiber material, and the remaining edges of the cover body 2 are detachably connected to the bag body 1 by means of, for example, a zipper, a buckle, etc. When the cover body 2 is opened, the cover body 2 can be rotated relative to the bag body 1 to open the opening of the bag body 1, so that the mobile terminal device in the bag body 1 is convenient to use. After use, the cover body 2 is rotated to reset, and the bag body 1 and the cover body 2 are covered and detachably connected.

[0054] In this way, after opening the cover 2, the opening of the bag 1 can be opened, which is convenient for using the mobile terminal device in the bag 1. Moreover, after opening the cover 2, the cover 2 is still rotatably connected to the bag 1, which improves the convenience of closing and opening the cover 2.

[0055] Furthermore, combined with Figure 1 As shown, a shoulder strap 11 and an upper strap 12 are provided on the outer wall of the bag body 1 away from the cover body, and the upper strap 12 is used to tie and fix the shoulder strap 11.

[0056] In this embodiment, the shoulder strap 11 and the upper strap 12 are of an integrated design, that is, the shoulder strap 11 and the upper strap 12 are connected to each other in one piece, and the shoulder strap 11 and the upper strap 12 are both of a left-right symmetrical design. The upper strap 12 on the left side passes through the shoulder strap 11 on the left side, and the upper strap 12 on the right side passes through the shoulder strap 11 on the right side. By tying and fixing the shoulder straps 11 on the left and right sides, the shoulder straps 11 can be limited. When the user puts on the backpack, the upper strap 12 can be tied and fixed to the shoulder strap 11 to prevent the shoulder strap 11 from slipping, thereby improving the user experience and safety of the backpack. It is particularly suitable for working scenes in the power industry such as poles and towers, and to a certain extent, it also improves the safety of the user in the corresponding working scenes. In addition, a through hole can also be set on the shoulder strap 11 for the upper strap 12 to pass through, and the upper strap 12 can also be used to tie and fix the shoulder strap 11. Optionally, the upper straps 12 on the left and right sides can be detachably connected (for example, by snap-on, hook and loop, knotting, etc.), thereby facilitating the user to put on or take off the backpack.

[0057] Furthermore, a lower strap 13 is provided on the outer wall of the bag body 1 away from the cover body 2 to be tied and fixed to the waist of the user.

[0058] Combination Figure 1 As shown, a lower strap 13 is provided on the outer wall of the bag body 1 on the side away from the cover body 2 (i.e., the front side wall), and preferably two lower straps 13 are symmetrically arranged on the left and right sides, and the two lower straps 13 can be detachably connected (for example, by snapping, Velcro, tying a knot, etc.), and can then be tied and fixed around the user's waist.

[0059] In this way, the lower strap 13 is tied and fixed to the user's waist, which improves the stability of the lower part of the bag body 1 and prevents the lower part of the bag body 1 from shaking during the user's movement. It protects the mobile terminal equipment in the bag body 1 and improves the user experience of the backpack. It is particularly suitable for work scenes in the power industry such as poles and towers, and also improves the safety of users in corresponding work scenes to a certain extent.

[0060] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0061] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0062] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A backpack, characterized in that: include: A bag body and a cover body, wherein the cover body is used to cover or open the opening of the bag body; The bracket device includes a base, a support member and a tray, wherein the base is arranged in the inner cavity of the package body, the first end of the support member is rotatably connected to the base so that the second end of the support member is close to or away from the base, the second end of the support member is rotatably connected to the tray, and the tray is used for detachably fixing the mobile terminal device.

2. The backpack according to claim 1, characterized in that: The base includes a bottom plate and a rotating frame, the bottom plate is fitted on the inner wall of the package body, the rotating frame is rotatably connected to the bottom plate so that the rotating frame rotates in a front-rear direction, and the first end of the support is rotatably connected to the rotating frame.

3. The backpack according to claim 1, characterized in that: A flange is provided on the lower side of the tray, and the flange is bent in a direction away from the base.

4. The backpack according to claim 1, characterized in that: The left and right sides of the tray are both slidably connected with movable clamps, and the movable clamps on both sides are close to each other to clamp the mobile terminal device; Alternatively, a movable clamp is slidably connected to any one of the left and right sides of the tray, and a fixed clamp is fixedly connected to the other side, and the movable clamp is close to the fixed clamp to clamp the mobile terminal device.

5. The backpack according to claim 4, characterized in that: The tray is provided with a positioning piece, the positioning piece is provided with a slide groove extending in the left-right direction, and the movable clamp is slidably connected in the slide groove.

6. The backpack according to claim 4, characterized in that: The movable clip is provided with a limiting groove to be inserted and limited with the mobile terminal device.

7. The backpack according to claim 1, characterized in that: The tray is provided with a plurality of weight-reducing holes.

8. The backpack according to claim 1, characterized in that: Part of the edge of the cover body is rotatably connected to the package body, and the remaining edge of the cover body is detachably connected to the package body.

9. The backpack according to claim 1, characterized in that: A shoulder strap and an upper strap are provided on the outer wall of the bag body away from the cover body, and the upper strap is used for tying and fixing the shoulder strap.

10. The backpack according to claim 1, characterized in that: A lower strap is provided on the outer wall of the bag body away from the cover body so as to be tied and fixed to the waist of the user.

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