Backpack with shoulder straps convenient to adjust

Abstract

The utility model relates to the technical field of adjustable knapsacks, in particular to a knapsack with shoulder straps convenient to adjust, which comprises a knapsack, straps and telescopic straps, the outer side of the knapsack is fixedly connected with the straps, one sides of the straps are connected through the telescopic straps, and the outer sides of the telescopic straps are fixedly connected with a contraction device; the retracting device comprises a box body, a fixing groove is formed in the inner side of the box body, a hole is formed in one side of the box body, a fixing cavity is fixedly connected to the inner side of the box body, and a first gear is fixedly connected to the inner side of one end of the fixing cavity; the outer side of the center of the retracting device is rotatably connected with a rotator, the rotator comprises a rotating plate, one end of the rotating plate is fixedly connected with an elastic piece, one end of the elastic piece is fixedly connected with a rotating column, and the outer side of the rotating column is fixedly connected with a second gear. Therefore, the distance between the two straps is shortened, the effect that a user can tighten the straps with one hand is achieved, and physical output of a rider can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of adjustable backpacks, in particular to a backpack with easily adjustable shoulder straps. Background Art

[0002] Backpacks refer to bags that are carried on the back. There are various styles and shoulder straps of backpacks. They are made of different materials, such as leather, plastic, polyester, canvas, nylon, cotton and linen. There are thin and beautiful straps, wide and comfortable straps, single-shoulder straps and double-shoulder straps, which are suitable for various scenes and people. For cyclists, the design of shoulder straps is also very important.

[0003] When a cyclist is riding with a backpack on his back, if the riding time is long, the shoulder straps of the backpack will be in the same position on the cyclist's shoulders for a long time, and the cyclist needs to adjust the shoulder straps to different lengths. During the adjustment process of the existing backpack, the cyclist needs to stop the vehicle and use both hands to adjust the shoulder straps at the same time. Repeated stops and adjustments will affect the cyclist's physical strength during riding. Therefore, in order to solve the above problem, a backpack with easy-to-adjust shoulder straps is proposed. Utility Model Content

[0004] The utility model aims to provide a backpack with easily adjustable shoulder straps, so as to solve the problem that a rider needs to adjust the shoulder straps when riding for a long time, and the existing backpack needs to be repeatedly stopped for adjustment, which will affect the rider's physical strength during riding.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A backpack with easily adjustable shoulder straps comprises a backpack, a shoulder strap and a telescopic strap, wherein the shoulder strap is fixedly connected to the outer side of the backpack, one side of the shoulder strap is connected via the telescopic strap, and the outer side of the telescopic strap is fixedly connected to a contraction device; the contraction device comprises a box body, the inner side of the box body is provided with a fixing groove, one side of the box body is provided with a hole, the inner side of the box body is fixedly connected with a fixing cavity, and the inner side of one end of the fixing cavity is fixedly connected with a first gear; the outer side of the center of the contraction device is rotatably connected to a rotator, and the rotator comprises a rotating plate, one end of the rotating plate is fixedly connected to an elastic member, one end of the elastic member is fixedly connected to a rotating column, the outer side of the rotating column is fixedly connected to a second gear, one end of the rotating column is slidably connected to a rotating shaft, and a rope is wound around the outer side of the rotating shaft.

[0007] Preferably, the cross-section of the fixed cavity is in the shape of a ring, the inner diameter of the fixed cavity is larger than the diameter of the rotating column, and the fixed cavity is coaxial with the rotating column.

[0008] Preferably, the rope passes through the contraction device and the telescopic belt, and two ends of the rope are fixedly connected to two ends of the telescopic belt.

[0009] Preferably, the elastic member is annularly arranged, and the rotating plate, the rotating column and the elastic member are coaxial.

[0010] Preferably, the first gear and the second gear are equidistantly distributed on the inner side of the fixed cavity and the outer side of the rotating column, respectively, and the first gear and the second gear are staggered with each other.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, the rotating plate, the rotating column and the rope are arranged, and the rope is retracted inwardly, so as to shorten the distance between the two straps, so that the user can tighten the straps with one hand, thereby reducing the physical exertion of the rider. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the rope installation position structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the box body of the utility model;

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the fixed cavity of the utility model.

[0017] In the figure: 1. backpack;

[0018] 2. Straps;

[0019] 3. Telescopic belt;

[0020] 4. retracting device; 41. box body; 42. fixing groove; 43. opening; 44. fixing cavity; 45. first gear;

[0021] 5. Rotator; 51. Rotating plate; 52. Rotating column; 53. Elastic member; 54. Second gear; 55. Rotating shaft;

[0022] 6. Rope. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] See also Figure 1-4 , the utility model provides a technical solution:

[0026] A backpack with easily adjustable shoulder straps comprises a backpack 1, a shoulder strap 2 and a telescopic belt 3, wherein the shoulder strap 2 is fixedly connected to the outer side of the backpack 1, one side of the shoulder strap 2 is connected via the telescopic belt 3, and a contraction device 4 is fixedly connected to the outer side of the telescopic belt 3; the contraction device 4 comprises a box body 41, a fixing groove 42 is provided on the inner side of the box body 41, a hole 43 is provided on one side of the box body 41, a fixing cavity 44 is fixedly connected to the inner side of the box body 41, and a first gear 45 is fixedly connected to the inner side of one end of the fixing cavity 44; a rotator 5 is rotatably connected to the outer side of the center of the contraction device 4, and the rotator 5 comprises a rotating plate 51, one end of the rotating plate 51 is fixedly connected to an elastic member 53, one end of the elastic member 53 is fixedly connected to a rotating column 52, the outer side of the rotating column 52 is fixedly connected to a second gear 54, one end of the rotating column 52 is slidably connected to a rotating shaft 55, a rope 6 is wound around the outer side of the rotating shaft 55, and one end of the rotating shaft 55 is rotatably connected to the box body 41.

[0027] The cross-section of the fixed cavity 44 is annular, and the inner diameter of the fixed cavity 44 is larger than the diameter of the rotating column 52. The fixed cavity 44 is coaxial with the rotating column 52. Such a setting can make the overall structure more reasonable and facilitate the effective fixation of the rotating column 52. The rope 6 runs through the contraction device 4 and the telescopic belt 3. The two ends of the rope 6 are fixedly connected to the two ends of the telescopic belt 3. The rotation of the rotating column 52 will drive the rotating shaft 55 to rotate, and the rope 6 fixed on the outside of the rotating shaft 55 will shrink inward.

[0028] The elastic member 53 is arranged in an annular shape, and the rotating plate 51, the rotating column 52 and the elastic member 53 are coaxial. Such an arrangement can make the overall structure more reasonable and facilitate the user to tighten the shoulder strap 2 with one hand; the first gear 45 and the second gear 54 are evenly distributed on the outside of the fixed cavity 44 and the outside of the rotating column 52, and the first gear 45 and the second gear 54 are staggered with each other. When the user pulls the rotating plate 51 outward, the second gear 54 fixed on the outside of the rotating column 52 can engage and fix the first gear 45 on the outside of the fixed cavity 44, thereby completing the tightening of the shoulder strap 2.

[0029] Working process: When a rider uses the backpack 1, first the rider's head passes between the shoulder strap 2 and the retractable belt 3, and then the shoulder strap 2 is used to adjust a comfortable angle. When the rider needs to adjust the shoulder strap 2 during a long ride, the rider needs to slow down and adjust the retracting device 4 with one hand. First, the rotating plate 51 needs to be pressed inward, and the elastic member 53 fixed at one end of the rotating column 52 will press the rotating plate 51 inward to limit the position to a certain extent, so that the second gear 54 fixed on the outside of the rotating column 52 can be disengaged from the first gear 45 on the outside of the fixing cavity 44, and then the user will By rotating the rotating plate 51 in the clockwise direction, the rotating column 52 driven by the rotating rotating plate 51 rotates, and then the rotating shaft 55 is driven to rotate, and the rope 6 fixed on the outside of the rotating shaft 55 will shrink inward. When the rope 6 shrinks, the telescopic belt 3 will shrink and expand a certain amount of folds to shorten the distance between the two straps 2, thereby tightening the straps 2, so that the user can tighten the straps 2 with one hand. After the tightening is completed, the user needs to pull the rotating plate 51 outward, so that the second gear fixed on the outside of the rotating column 52 can be engaged and fixed to the first gear 45 on the outside of the fixing cavity 44, thereby completing the tightening of the straps 2.

[0030] 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 easily adjustable shoulder straps, comprising a backpack (1), shoulder straps (2) and a retractable strap (3), characterized in that: The backpack (1) is fixedly connected to a shoulder strap (2) on its outer side, one side of the shoulder strap (2) is connected via a retractable belt (3), and a retracting device (4) is fixedly connected to the outer side of the retractable belt (3); The shrinking device (4) comprises a box body (41), a fixing groove (42) is provided on the inner side of the box body (41), a hole (43) is provided on one side of the box body (41), a fixing cavity (44) is fixedly connected to the inner side of the box body (41), and a first gear (45) is fixedly connected to the inner side of one end of the fixing cavity (44); The center outer side of the contraction device (4) is rotatably connected to a rotator (5), and the rotator (5) comprises a rotating plate (51), one end of the rotating plate (51) is fixedly connected to an elastic member (53), one end of the elastic member (53) is fixedly connected to a rotating column (52), the outer side of the rotating column (52) is fixedly connected to a second gear (54), one end of the rotating column (52) is slidably connected to a rotating shaft (55), the outer side of the rotating shaft (55) is wound with a rope (6), and one end of the rotating shaft (55) is rotatably connected to a box (41).

2. A backpack with easily adjustable shoulder straps according to claim 1, characterized in that: The cross-section of the fixed cavity (44) is in the shape of a ring, the inner diameter of the fixed cavity (44) is larger than the diameter of the rotating column (52), and the fixed cavity (44) is coaxial with the rotating column (52).

3. A backpack with easily adjustable shoulder straps according to claim 1, characterized in that: The rope (6) passes through the contraction device (4) and the telescopic belt (3), and the two ends of the rope (6) are fixedly connected to the two ends of the telescopic belt (3).

4. A backpack with easily adjustable shoulder straps according to claim 1, characterized in that: The elastic member (53) is arranged in an annular shape, and the rotating plate (51), the rotating column (52) and the elastic member (53) are coaxial.

5. The backpack with easily adjustable shoulder straps according to claim 1, characterized in that: The first gear (45) and the second gear (54) are respectively and equidistantly distributed on the inner side of the fixed cavity (44) and the outer side of the rotating column (52), and the first gear (45) and the second gear (54) are staggered with each other.

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