Backpack with tightening function

Abstract

The utility model relates to the technical field of backpack, and discloses a backpack with a tightening function, which comprises a backpack body, an L-shaped fixing plate is arranged on the surface of the rear side of the backpack body, a cavity is formed in the L-shaped fixing plate, first rotating rods are rotatably connected to the inner walls of the upper side and the lower side of the cavity, worm wheels are sleeved on the outer surfaces of the two first rotating rods, and the worm wheels are rotatably connected to the inner walls of the upper side and the lower side of the cavity. Worms are connected to the outer surfaces of the two worm wheels in a meshed mode respectively, a worker rotates the worms to drive the worm wheels to rotate, then objects in the bag body are tightened, the tightening belt can be tensioned through the elastic force of the torsional spring, and finally the object tightening effect of the tightening belt is further improved. The backpack has the advantages that the problem that articles in existing backpack are not provided with fixing devices and may shake during bumping is solved, shaking of the articles in the backpack body is effectively avoided, collision of the articles in the backpack body is avoided, safety and stability of the articles in the backpack body are improved, and the backpack is high in practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of backpacks, in particular to a backpack with a tightening function. Background Art

[0002] Backpack is a general term for backpacks carried on shoulders. According to the different uses of backpacks, they are divided into computer backpacks, sports backpacks, fashion backpacks, school backpacks and drawstring bags, military backpacks, mountaineering bags, etc. According to the different materials, they can be divided into canvas bags, Oxford cloth bags, and nylon cloth bags.

[0003] When some existing backpacks are in use, if the items placed in the bag are light or small, the items inside may shake when the user walks, which may not only cause the internal items to collide and be damaged, but also cause the internal items to become messy, making it inconvenient for the user to find and take the internal items. The stability is low and the practicality is low. In view of this, we propose a backpack with a tightening function to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a backpack with a tightening function, which solves the problem that some existing backpacks have no fixing device for items inside, which may cause shaking during bumps.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a backpack with a tightening function, comprising a bag body, a rear side surface of the bag body is provided with an L-shaped fixing plate, a cavity is opened inside the L-shaped fixing plate, upper and lower inner walls of the cavity are rotatably connected to a first rotating rod, the outer surfaces of the two first rotating rods are sleeved with worm wheels, the outer surfaces of the two worm wheels are respectively meshed and connected with worms, and the right ends of the two worms are rotated to pass through the L-shaped fixing plate, the outer surface of the first rotating rod is sleeved with a tightening belt, the upper and lower inner walls of the cavity are rotatably connected to the second rotating rod, one end of the tightening belt away from the first rotating rod is sleeved on the outer surface of the second rotating rod, a first through groove is opened on the rear side surface of the L-shaped fixing plate, and a second through groove is opened on the rear side surface of the bag body, a fixing ring is fixedly sleeved on the outer surface of the second rotating rod, and a torsion spring is fixedly connected between the fixing ring and the inner wall of the cavity.

[0008] Preferably, the second through slot is connected to the first through slot, and the tightening belt is slidably connected inside the first through slot and the second through slot.

[0009] Preferably, the torsion spring is sleeved on the outer surface of the second rotating rod.

[0010] Preferably, a flexible buffer pad is provided on the rear surface of the L-shaped fixing plate, a flexible protrusion is provided on the rear surface of the flexible buffer pad, and a breathable cotton mesh is provided on the rear surface of the flexible buffer pad.

[0011] Preferably, two shoulder straps are provided on the rear surface of the L-shaped fixing plate, and a fixing strap is provided on the surface of the left shoulder strap.

[0012] Preferably, a power supply is arranged inside the horizontal plate of the L-shaped fixing plate, and a USB output interface and a charging interface are arranged on the left surface of the L-shaped fixing plate, and both the USB output interface and the charging interface are electrically connected to the power supply inside the horizontal plate of the L-shaped fixing plate.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a backpack with a tightening function, which has the following beneficial effects:

[0015] 1. The backpack with tightening function can tighten the items inside the bag by rotating the worm gear when the staff rotates the worm, and the tightening belt can be tightened by relying on the elastic force of the torsion spring, so as to further improve the tightening effect of the tightening belt on the items, solve the problem that some existing backpacks have no fixing devices for the items inside, which may sway during bumps, effectively avoid the shaking of the items inside the bag, avoid the collision of the items inside the bag, improve the safety and stability of the items inside the bag, and have high practicality.

[0016] 2. The backpack with tightening function improves the user's experience in carrying the bag by providing a flexible buffer pad and flexible protrusions, so that the L-shaped fixing plate can be in flexible contact with the user's back, thereby improving the user's experience and effect and improving the comfort of the device.

[0017] 3. The backpack with tightening function avoids the situation in which the user's back and the flexible cushion are in contact for a long time and a large amount of sweat is generated in hot weather by setting a breathable cotton net, thereby ensuring ventilation of the back and further improving the user's experience.

[0018] 4. The functionality of the backpack with tightening function is further improved by providing a USB output interface and a charging interface, making it convenient for users to charge electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a backpack with a tightening function according to the utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the L-shaped fixing plate of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the L-shaped fixing plate of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the package body of the utility model;

[0023] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0024] In the figure: 1. bag body; 2. L-shaped fixing plate; 3. cavity; 4. first rotating rod; 5. worm gear; 6. worm; 7. tightening belt; 8. first through slot; 9. second rotating rod; 10. fixing ring; 11. torsion spring; 12. second through slot; 13. flexible protrusion; 14. breathable cotton net; 15. shoulder strap; 16. fixing belt; 17. USB output interface; 18. charging interface; 19. flexible buffer pad. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5The utility model provides a technical solution: a backpack with a tightening function, comprising a bag body 1, an L-shaped fixing plate 2 is arranged on the rear side surface of the bag body 1, a cavity 3 is opened inside the L-shaped fixing plate 2, the upper and lower inner walls of the cavity 3 are rotatably connected with a first rotating rod 4, the outer surfaces of the two first rotating rods 4 are sleeved with worm wheels 5, the outer surfaces of the two worm wheels 5 are respectively meshed and connected with worms 6, the right ends of the two worms 6 are rotatably passed through the L-shaped fixing plate 2, the outer surface of the first rotating rod 4 is sleeved with a tightening belt 7, the upper and lower inner walls of the cavity 3 are rotatably connected with a second rotating rod 9, the end of the tightening belt 7 away from the first rotating rod 4 is sleeved on the outer surface of the second rotating rod 9, the rear side surface of the L-shaped fixing plate 2 is provided with a first through groove 8, the rear side surface of the bag body 1 is provided with a second through groove 12, the second through groove 12 is connected with the first through groove 8, the tightening belt 7 is slidably connected to the inside of the first through groove 8 and the second through groove 12, and the staff rotates the worm 6 to drive the worm wheel 5 The second rotating rod 10 is fixedly connected with a torsion spring 11 on the inner wall of the cavity 3, and the torsion spring 11 is sleeved on the outer surface of the second rotating rod 9, and the second rotating rod 9 is driven to rotate by the movement of the tightening belt 7, and the rotation of the fixing ring 10 is driven by the rotation of the second rotating rod 9. At this time, the tightening belt 7 will be tightened by the elastic force of the torsion spring 11 itself, and finally the tightening effect of the tightening belt 7 on the items is further improved. The above structure solves the problem that some existing backpacks have no fixing devices and may sway during bumps, effectively avoids the shaking of the items in the bag 1, avoids the collision of the items in the bag 1, improves the safety and stability of the items in the bag 1, and has high practicality.

[0027] Furthermore, a flexible buffer pad 19 is provided on the rear surface of the L-shaped fixing plate 2, and a flexible protrusion 13 is provided on the rear surface of the flexible buffer pad 19. The provision of the flexible buffer pad 19 and the flexible protrusion 13 improves the user's experience in carrying the bag 1, so that the L-shaped fixing plate 2 can be in flexible contact with the user's back, thereby improving the user's usage experience and effect and improving the comfort of the device.

[0028] Furthermore, a breathable cotton mesh 14 is provided on the rear surface of the flexible cushion pad 19. The provision of the breathable cotton mesh 14 avoids the situation in which a large amount of sweat is generated due to long-term contact between the user's back and the flexible cushion pad 19 in hot weather, ensures ventilation of the back, and further improves the user's experience.

[0029] Furthermore, two shoulder straps 15 are provided on the rear surface of the L-shaped fixing plate 2, and a fixing strap 16 is provided on the surface of the left shoulder strap 15, and a Velcro is provided on the surface of the fixing strap 16. Through the setting of the fixing strap 16, when the user carries the bag body 1 on his back, the fixing strap 16 is wrapped around the right shoulder strap 15, and then fixed by the Velcro on the surface, thereby further improving the anti-slip performance of the bag body 1, ensuring the stability of the bag body 1, and avoiding the bag body 1 from slipping as much as possible.

[0030] Furthermore, a power supply is provided inside the horizontal plate of the L-shaped fixing plate 2, and a USB output interface 17 and a charging interface 18 are provided on the left surface of the L-shaped fixing plate 2. Both the USB output interface 17 and the charging interface 18 are electrically connected to the power supply inside the horizontal plate of the L-shaped fixing plate 2. The provision of the USB output interface 17 and the charging interface 18 further improves the functionality of the device, making it convenient for users to charge electronic devices.

[0031] Working principle:

[0032] When the backpack with a tightening function is in use, the staff rotates the worm 6 to drive the rotation of the worm wheel 5, and the rotation of the worm wheel 5 drives the rotation of the first rotating rod 4. The rotation of the first rotating rod 4 realizes the winding of the tightening belt 7, and then the tightening of the items inside the bag body 1 is realized. The movement of the tightening belt 7 drives the rotation of the second rotating rod 9, and the rotation of the second rotating rod 9 drives the rotation of the fixing ring 10. At this time, the tightening belt 7 will be tightened by relying on the elastic force of the torsion spring 11 itself, and finally the tightening effect of the tightening belt 7 on the items is further improved.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A backpack with a tightening function, comprising a bag body (1), characterized in that: The rear side surface of the bag body (1) is provided with an L-shaped fixing plate (2), the interior of the L-shaped fixing plate (2) is provided with a cavity (3), the upper and lower inner walls of the cavity (3) are both rotatably connected with first rotating rods (4), the outer surfaces of the two first rotating rods (4) are both sleeved with worm wheels (5), the outer surfaces of the two worm wheels (5) are respectively meshed and connected with worms (6), the right ends of the two worms (6) are both rotatably passed through the L-shaped fixing plate (2), and the outer surfaces of the first rotating rods (4) are sleeved with tightening belts (7) ), the inner walls on the upper and lower sides of the cavity (3) are rotatably connected to a second rotating rod (9), one end of the tightening belt (7) away from the first rotating rod (4) is sleeved on the outer surface of the second rotating rod (9), the rear surface of the L-shaped fixing plate (2) is provided with a first through groove (8), the rear surface of the package body (1) is provided with a second through groove (12), the outer surface of the second rotating rod (9) is fixedly sleeved with a fixing ring (10), and a torsion spring (11) is fixedly connected between the fixing ring (10) and the inner wall of the cavity (3).

2. A backpack with tightening function according to claim 1, characterized in that: The second through slot (12) is connected to the first through slot (8), and the tightening belt (7) is slidably connected inside the first through slot (8) and the second through slot (12).

3. A backpack with tightening function according to claim 1, characterized in that: The torsion spring (11) is sleeved on the outer surface of the second rotating rod (9).

4. A backpack with tightening function according to claim 1, characterized in that: A flexible buffer pad (19) is provided on the rear surface of the L-shaped fixing plate (2), and a flexible protrusion (13) is provided on the rear surface of the flexible buffer pad (19).

5. A backpack with tightening function according to claim 4, characterized in that: The rear surface of the flexible buffer pad (19) is provided with a breathable cotton mesh (14).

6. A backpack with tightening function according to claim 4, characterized in that: The rear surface of the L-shaped fixing plate (2) is provided with two shoulder straps (15), and the surface of the left shoulder strap (15) is provided with a fixing strap (16).

7. A backpack with tightening function according to claim 6, characterized in that: A power source is arranged inside the transverse plate of the L-shaped fixing plate (2), and a USB output interface (17) and a charging interface (18) are arranged on the left side surface of the L-shaped fixing plate (2).

8. The backpack with tightening function according to claim 7, characterized in that: The USB output interface (17) and the charging interface (18) are both electrically connected to the power source inside the transverse plate of the L-shaped fixing plate (2).

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