Expandable backpack
By designing an expandable backpack, using zipper extension cloth and backpack cover, combined with adjustment strap and pulling handle to drive the telescopic pull rod and roller, the fatigue problem caused by the existing backpack usage method is solved, and more efficient expansion and multiple carrying methods are achieved.
Patent Information
- Application Number
- CN202421777672.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The existing expansion packs usually require lifting or adhering, which leads to increased fatigue and lacks the ability to carry them that saves energy.
An expandable backpack is designed to increase the interior space of the backpack by zipper extension cloth and backpack cover, and to drive the telescopic pull rod and roller by adjusting the strap and pulling the handle, providing a variety of carrying methods.
It improves the capacity expansion effect and loading capacity of the backpack, reduces the user's fatigue, and improves the convenience and practicality of carrying.
Smart Images
Figure CN222840636U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of backpacks, in particular to an expandable backpack. 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 holidays, so as to facilitate their use during travel or tourism.
[0003] When using the above technology, it is found that the following technical problems exist in the prior art: the expandable backpack in the prior art generally adopts the method of lifting or carrying, which will increase the fatigue of the user. It is not convenient to add a way of using the expandable backpack that can save physical strength. For this reason, we design an expandable backpack to provide another technical solution to the above technical problems. Utility Model Content
[0004] Based on this, it is necessary to provide an expandable backpack to address the above technical problems. When items need to be loaded into the interior of the backpack body, the internal space of the backpack body is limited. At this time, a zipper is used to extend the cloth and the backpack cover to expand the space inside the backpack body, thereby improving the expansion effect of the backpack and the loading capacity of the backpack. The backpack can then be carried on the back by adjusting the shoulder straps, and the handle is pulled to drive the telescopic rod and rollers to slide on the ground, thereby increasing the carrying methods of the backpack.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] An expandable backpack comprises a bottom plate, the top of the bottom plate is equipped with a backpack body, the top of the backpack body is sewn with an extension cloth, the top end of the extension cloth is sewn with a backpack cover, the top of the backpack body is connected to the backpack cover by a zipper, a support plate is fixed to one end of the top of the bottom plate, one end of the backpack body is connected to the support plate, one end of the support plate is equipped with an adjustable shoulder strap, the top of the inside of the support plate is slidably connected to a telescopic rod, the top of the telescopic rod is fixed with a handle, the outer side of the telescopic rod is slidably connected to a limiting slider, and one end of the limiting slider is fixed to the telescopic rod.
[0007] As a preferred embodiment of the expandable backpack provided by the utility model, both sides of the limit slider are slidably connected to the limit rods, the two limit rods are fixed with paddles on the sides close to each other, the two paddles are fixed with springs on the sides close to each other, and the two springs are fixed to the limit slider on the sides close to each other.
[0008] As a preferred embodiment of the expandable backpack provided by the utility model, a support column is fixed to the other end of the bottom end of the bottom plate, and a roller is installed at one end of the bottom end of the bottom plate.
[0009] As a preferred implementation of the expandable backpack provided by the utility model, a protective pad is fixed to one end of the support plate.
[0010] As a preferred implementation of the expandable backpack provided by the utility model, the extension cloth has a certain elastic extension effect.
[0011] As a preferred implementation of the expandable backpack provided by the utility model, anti-slip sleeves are fixed on the sides of the two limit rods that are away from each other.
[0012] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.
[0013] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:
[0014] The utility model provides an expandable backpack. When the paddles are moved to slide in a direction close to each other, the paddles drive the limit rods to separate from the telescopic pull rods. At this time, the limit slider drives the backpack cover to extend the extension cloth, and the extension cloth has a certain elasticity, which is convenient for increasing the space inside the backpack.
[0015] The backpack can be carried on the back by adjusting the shoulder straps, and the handle can be pulled to drive the telescopic rod and the rollers to slide on the ground, so that the carrying method can be selected according to the use and the path, thereby improving the convenience and practicality of the user and reducing the fatigue of the user. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the connection structure between the backpack body and the backpack cover of the utility model;
[0019] Figure 3 This is a schematic diagram of the connection structure between the telescopic pull rod and the limit slider of the utility model;
[0020] Figure 4 It is a schematic diagram of the internal structure of the limit sliding block of the utility model.
[0021] In the figure: 1. backpack body; 2. backpack cover; 3. telescopic pull rod; 4. bottom plate; 5. support column; 6. roller; 7. support plate; 8. extension cloth; 9. limit slider; 10. adjustable shoulder strap; 11. handle; 12. limit rod; 13. paddle; 14. spring. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.
[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0026] Embodiment 1
[0027] Reference Figure 1-Figure 4 , an expandable backpack, comprising a bottom plate 4, a backpack body 1 is mounted on the top of the bottom plate 4, an extension cloth 8 is sewn on the top of the backpack body 1, a backpack cover 2 is sewn on the top end of the extension cloth 8, the top of the backpack body 1 is connected to the backpack cover 2 through a zipper, a support plate 7 is fixed to one end of the top of the bottom plate 4, one end of the backpack body 1 is connected to the support plate 7, one end of the support plate 7 is equipped with an adjustable shoulder strap 10, a telescopic rod 3 is slidably connected to the top of the support plate 7, a handle 11 is fixed to the top of the telescopic rod 3, the outer side of the telescopic rod 3 is slidably connected to a limit slider 9, one end of the limit slider 9 is fixed to the telescopic rod 3;
[0028] When items need to be loaded into the backpack body 1, the internal space of the backpack body 1 is limited. At this time, the zipper is used to expand the space inside the backpack body 1 through the extension cloth 8 and the backpack cover 2, so as to improve the expansion effect of the backpack and the loading capacity of the backpack. Then, the backpack can be carried by adjusting the shoulder strap 10.
[0029] The two sides of the limit slider 9 are slidably connected to the limit rods 12, and the two limit rods 12 are fixed with a paddle 13 on the side close to each other, and the two paddles 13 are fixed with a spring 14 on the side close to each other, and the two springs 14 are fixed to the limit slider 9 on the side close to each other;
[0030] When the paddle 13 is slid in the direction of approaching each other, the paddle 13 drives the limiting rod 12 to separate from the telescopic pull rod 3, and the limiting slider 9 drives the backpack cover 2 to extend the extension cloth 8, so that the extension cloth 8 has a certain elasticity, which is convenient for increasing the space inside the backpack;
[0031] When the limit slider 9 drives the backpack cover 2 to move to the maximum expansion position, the paddle 13 is released, and the elasticity of the spring 14 drives the paddle 13 and the limit rod 12 to limit the telescopic pull rod 3. Therefore, the limit slider 9 is convenient for supporting the backpack cover 2 and the telescopic pull rod 3 to prevent the backpack cover 2 from collapsing, thereby affecting the appearance.
[0032] The other end of the bottom of the bottom plate 4 is fixed with a support column 5, and one end of the bottom of the bottom plate 4 is equipped with a roller 6; by pulling the telescopic pull rod 3
[0033] A protective pad is fixed at one end of the support plate 7 to enhance the user's carrying experience;
[0034] An anti-skid sleeve is fixed on the side of the two limit rods 12 that are away from each other, so as to increase the friction between the limit rods 12 and the telescopic pull rod 3 and improve the anti-skid effect of the limit rods 12.
[0035] The use process of the expandable backpack provided by the utility model is as follows: when items need to be loaded into the backpack body 1, the internal space of the backpack body 1 is limited. At this time, when the paddle 13 is pushed to slide in the direction of approaching each other, the paddle 13 drives the limit rod 12 to disengage from the telescopic rod 3. At this time, the limit slider 9 drives the backpack cover 2 to extend the extension cloth 8, and then the extension cloth 8 has a certain elasticity, which is convenient for increasing the space inside the backpack and improving the loading capacity of the backpack. Then, by adjusting the shoulder strap 10, the backpack can be carried on the back, or the handle 11 is pulled to drive the telescopic rod 3 and the roller 6 to slide on the ground, which is convenient for improving the convenience and practicality of the user and reducing the fatigue of the user.
[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An expandable backpack, characterized in that: The backpack comprises a bottom plate (4), the top of which is equipped with a backpack body (1), the top of which is sewn with an extension cloth (8), the top of which is sewn with a backpack cover (2), the top of which is connected to the backpack cover (2) by a zipper, one end of the top of the bottom plate (4) is fixed with a support plate (7), one end of which is connected to the support plate (7), one end of which is equipped with an adjustment strap (10), the top of the inside of the support plate (7) is slidably connected with a telescopic rod (3), the top of which is fixed with a handle (11), the outer side of the telescopic rod (3) is slidably connected with a limit slider (9), one end of which is fixed to the telescopic rod (3).
2. The expandable backpack according to claim 1, characterized in that: Both sides of the limit slider (9) are slidably connected to the limit rods (12); the two limit rods (12) are fixed with paddles (13) on the sides close to each other; the two paddles (13) are fixed with springs (14) on the sides close to each other; and the two springs (14) are fixed to the limit slider (9) on the sides close to each other.
3. The expandable backpack according to claim 2, characterized in that: A support column (5) is fixed to the other end of the bottom end of the bottom plate (4), and a roller (6) is mounted on one end of the bottom end of the bottom plate (4).
4. The expandable backpack according to claim 2, characterized in that: A protective pad is fixed to one end of the support plate (7).
5. The expandable backpack according to claim 1, characterized in that: The extension fabric (8) has a certain elastic extension effect.
6. The expandable backpack according to claim 2, characterized in that: An anti-slip sleeve is fixed to the sides of the two limit rods (12) that are away from each other.