Backpack

Abstract

The present invention provides a backpack, comprising a backpack body for carrying heavy objects, a backpack frame for supporting the back of a human body, a shoulder strap connected to the backpack frame, a mobile frame for supporting and fixing the backpack body, a linear slide assembly for guiding the mobile frame to move up and down on the backpack frame, an elastic element connecting the backpack frame and the mobile frame and playing a damping and buffering role, and an electrostatic adsorption mechanism for adjusting the friction damping between the backpack frame and the mobile frame. In the process of walking with a backpack load, the linear slide assembly guides the mobile frame to move up and down on the backpack frame, and the impact force of the shoulder strap on the human shoulder is buffered by the damping force of the elastic element. In addition, after the first electrostatic adsorption sheet on the backpack frame and the second electrostatic adsorption sheet on the mobile frame are energized, static friction is generated, and a vibration damping force is formed in the vertical direction, which further reduces the impact force on the shoulder, thereby avoiding fatigue damage to the shoulder muscles caused by the backpack.

Description

Technical Field

[0001] The present invention belongs to the technical field of human wearable devices, and more specifically, relates to a backpack. Background Art

[0002] Backpacks have the advantages of simple structure and large load capacity, and have become one of the load-bearing equipments commonly used in people's daily lives. The shoulder straps of most backpacks are generally fixed directly on the back of the backpack body. When hiking, traveling, climbing or doing sports training, the backpack loaded with heavy objects will usually shake up and down with the walking movement of the human body, which not only causes the backpack to easily rub against the back of the human body, reducing the comfort of the user's backpack load. It will also produce a large amplitude of up and down vibration in the vertical direction, causing the human shoulder to bear a large pressure force, and even cause the shoulder straps to form a strong instantaneous impact force on the human shoulder, causing shoulder muscle soreness, increasing the human body's fatigue, and often feeling difficult to carry. Summary of the invention

[0003] The purpose of the present invention is to provide a backpack, aiming to solve the problem in the prior art that during the walking movement of a person carrying a backpack, the backpack vibrates with a large amplitude in the vertical direction, causing the shoulders of the person to bear a strong impact force.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a backpack, including a backpack body for loading items, a backpack bracket for supporting the back of a human body, a shoulder strap connected to the backpack bracket, a mobile bracket supporting and fixing the backpack body, a linear sliding assembly for guiding the mobile bracket to move up and down on the backpack bracket, an elastic element connecting the backpack bracket and the mobile bracket and playing a damping and buffering role, and an electrostatic adsorption mechanism for adjusting the friction damping between the backpack bracket and the mobile bracket, the electrostatic adsorption mechanism including a first electrostatic adsorption sheet arranged on the backpack bracket, a second electrostatic adsorption sheet electrostatically adsorbed with the first electrostatic adsorption sheet, and a controller for controlling the magnitude of the electrostatic adsorption force between the first electrostatic adsorption sheet and the second electrostatic adsorption sheet, and the second electrostatic adsorption sheet is arranged on the mobile bracket.

[0005] Furthermore, the length direction of the first electrostatic adsorption sheet and the length direction of the second electrostatic adsorption sheet are arranged perpendicular to each other.

[0006] Furthermore, the electrostatic adsorption mechanism also includes a gravity sensor connected to the backpack bracket, one end of the first electrostatic adsorption sheet in the length direction is connected to the gravity sensor, the other end of the first electrostatic adsorption sheet in the length direction is connected to the backpack bracket, and the gravity sensor is electrically connected to the controller.

[0007] Furthermore, the electrostatic adsorption mechanism also includes an adjustment component for adjusting the clamping force between the first electrostatic adsorption sheet and the second electrostatic adsorption sheet, the adjustment component includes a linear slide rail fixed on the backpack bracket, a moving block slidably arranged on the linear slide rail to pull the first electrostatic adsorption sheet, a positioning piece fixed on the backpack bracket and a bolt for pulling the moving block, the bolt is rotatably installed on the positioning piece, and a threaded hole for matching and connecting the bolt is opened on the moving block.

[0008] Further, the first electrostatic adsorption sheet is formed by stacking at least two layers of electrostatic adsorption films, and / or the second electrostatic adsorption sheet is formed by stacking at least two layers of electrostatic adsorption films.

[0009] Furthermore, the elastic element is an elastic rope.

[0010] Furthermore, a first rope winding wheel is rotatably mounted on the mobile bracket, a second rope winding wheel is rotatably mounted on the backpack bracket, and the elastic rope is wound around the first rope winding wheel and the second rope winding wheel.

[0011] Furthermore, a first rope winding groove for positioning the elastic rope is provided on the outer circumferential surface of the first rope winding wheel, and / or a second rope winding groove for positioning the elastic rope is provided on the outer circumferential surface of the second rope winding wheel.

[0012] Furthermore, a plurality of the first rope winding wheels are installed at intervals on the mobile bracket, and a plurality of the second rope winding wheels are correspondingly installed on the backpack bracket, and the elastic rope is alternately wound around the first rope winding wheels and the second rope winding wheels.

[0013] Furthermore, an inertial sensor for measuring the load state of the backpack body is arranged on the backpack bracket, and the inertial sensor is electrically connected to the controller.

[0014] The backpack provided by the present invention has the beneficial effect that: compared with the prior art, the backpack provided by the present invention is provided with a backpack bracket connected with a shoulder strap, a mobile bracket supporting and fixing the backpack body, and an elastic element connecting the mobile bracket with the backpack bracket, so that the shoulder strap is separated from the backpack body. Then, during the walking movement of a human body carrying a backpack, the linear slide rail assembly guides the mobile bracket to move up and down on the backpack bracket, and through the damping force of the elastic element, the vibration amplitude generated by the mobile bracket moving up and down with the backpack body is reduced, the impact force of the shoulder strap on the human shoulder is buffered, and the pressure of the backpack on the shoulder is reduced. In addition, the first electrostatic adsorption sheet provided on the backpack bracket and the second electrostatic adsorption sheet provided on the mobile bracket generate static friction force to form vibration damping in the vertical direction after being energized, which can effectively reduce the vibration amplitude of the backpack body in the vertical direction during the walking movement of the human body, and can further reduce the impact force borne by the shoulder, thereby better avoiding fatigue damage to the shoulder muscles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a backpack provided in an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the exploded structure of a backpack provided by an embodiment of the present invention;

[0018] Figure 3 A schematic structural diagram of a backpack support of a backpack provided in an embodiment of the present invention;

[0019] Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure;

[0020] Figure 5 A schematic diagram of the structure of a mobile bracket of a backpack provided in an embodiment of the present invention;

[0021] Figure 6 A schematic structural diagram of a first rope winding wheel provided in an embodiment of the present invention;

[0022] Figure 7 A schematic structural diagram of a second rope winding wheel provided in an embodiment of the present invention.

[0023] Among them, the main marks of the drawings in the figure are:

[0024] 1-backpack body; 11-accommodating cavity; 2-backpack bracket;

[0025] 3- shoulder strap; 4- mobile bracket;

[0026] 5-linear sliding assembly; 51-guide rail; 52-slider.

[0027] 6- Inertial sensor;

[0028] 7-electrostatic adsorption mechanism; 71-first electrostatic adsorption sheet; 72-second electrostatic adsorption sheet; 73-fixed block; 74-gravity sensor; 75-adjustment assembly; 751-linear slide rail; 752-moving block; 753-positioning member; 76-controller;

[0029] 8-first rope winding wheel; 81-first rope winding groove;

[0030] 9-second rope winding wheel; 91-second rope winding groove;

[0031] 10-Shock absorbing cushion. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Please also read Figure 1 , Figure 2 and Figure 3 , the backpack provided by the present invention is now described. The backpack provided by the present invention includes a backpack body 1 for carrying heavy objects, a backpack bracket 2 for supporting the back of a human body, a shoulder strap 3 connected to the backpack bracket 2, a mobile bracket 4 that supports and fixes the backpack body 1, a linear sliding assembly 5 that guides the mobile bracket 4 to move up and down on the backpack bracket 2, and an elastic element (not shown in the figure) that connects the backpack bracket 2 and the mobile bracket 4 and plays a damping and buffering role, so that the vibration amplitude generated by the mobile bracket 4 with the up and down reciprocating motion of the backpack body 1 is reduced through the damping force of the elastic element (not shown in the figure), the impact force of the shoulder strap 3 on the human shoulder is buffered, and the pressure of the backpack on the shoulder is reduced. In addition, an electrostatic adsorption mechanism 7 is provided between the backpack bracket 2 and the mobile bracket 4, so that the friction damping between the backpack bracket 2 and the mobile bracket 4 is adjusted through the electrostatic adsorption mechanism 7. Specifically, the electrostatic adsorption mechanism 7 includes a first electrostatic adsorption sheet 71 disposed on the backpack bracket 2, a second electrostatic adsorption sheet 72 electrostatically adsorbed with the first electrostatic adsorption sheet 71, and a controller 76 for controlling the electrostatic adsorption force between the first electrostatic adsorption sheet 71 and the second electrostatic adsorption sheet 72, and the second electrostatic adsorption sheet 72 is disposed on the mobile bracket 4. After being energized, the first electrostatic adsorption sheet 71 and the second electrostatic adsorption sheet 72 generate static friction to form vibration damping in the vertical direction, which can effectively reduce the vibration amplitude of the backpack body 1 in the vertical direction during the movement of the human body, and can further reduce the impact force borne by the shoulder, thereby better avoiding fatigue damage to the shoulder muscles.

[0037] Compared with the prior art, the backpack provided by the present invention is provided with a backpack support 2 connected with a shoulder strap 3, a mobile support 4 supporting and fixing the backpack body 1, and an elastic element (not shown in the figure) connecting the mobile support 4 with the backpack support 2, so that the shoulder strap 3 is separated from the backpack body 1. In the process of human body walking with backpack load, the linear slide assembly guides the mobile support 4 to move up and down on the backpack support 2, and through the damping force of the elastic element (not shown in the figure), the vibration amplitude generated by the mobile support 4 moving up and down with the backpack body 1 is reduced, the impact force of the shoulder strap 3 on the human shoulder is buffered, and the pressure of the backpack on the shoulder is reduced. In addition, the first electrostatic adsorption sheet 71 provided on the backpack support 2 and the second electrostatic adsorption sheet 72 provided on the mobile support 4 generate static friction force to form vibration damping in the vertical direction after being energized, which can effectively reduce the vibration amplitude of the backpack body 1 in the vertical direction during the human body's walking movement, and can further reduce the impact force borne by the shoulder, thereby better avoiding fatigue damage to the shoulder muscles.

[0038] For details, please refer to Figure 2 As a specific embodiment of the backpack provided by the present invention, the backpack body 1 is an approximately rectangular parallelepiped structure, and the backpack body 1 has a receiving cavity 11 for loading heavy objects. Of course, the backpack body 1 can also be a hemispherical, cylindrical or truncated cone shape, etc., which can be selected and set according to actual needs, and is not limited here.

[0039] For details, please refer to Figure 2 , Figure 3 and Figure 5 As a specific embodiment of the backpack provided by the present invention, the outer contour of the mobile bracket 4 is plate-shaped, and the outer contour of the backpack bracket 2 is also plate-shaped, so as to reduce the overall volume of the backpack frame, and the plate-shaped mobile bracket 4 is parallel to the plate-shaped backpack bracket 2 and is arranged at intervals, which can improve the stability of the mobile bracket 4 in the up and down reciprocating motion with the backpack body 1, balance the force, and facilitate the elastic element (not shown in the figure) to effectively buffer the impulse of the backpack body 1, reduce the vibration amplitude of the backpack, and reduce the pressure of the shoulder strap 3 on the human shoulder.

[0040] For details, please refer to Figure 2 , Figure 3 and Figure 5 As a specific embodiment of the backpack provided by the present invention, the linear sliding assembly 5 includes two guide rails 51 extending in the vertical direction respectively and sliders 52 respectively slidingly matched with the two guide rails 51, the two guide rails 51 are arranged side by side and at intervals on the mobile bracket 4, and the two sliders 52 are respectively fixedly connected to the backpack bracket 2.

[0041] In this embodiment, a linear sliding assembly 5 is provided between the mobile bracket 4 and the backpack bracket 2. The linear sliding assembly 5 includes two guide rails 51 arranged side by side and at intervals on the backpack bracket 2 and two sliders 52 respectively fixedly connected to the mobile bracket 4. The two sliders 52 respectively slide with the two guide rails 51. During the human body's backpack-loaded walking movement, the linear sliding assembly 5 can guide the backpack body 1 fixed on the mobile bracket 4, and guide the mobile bracket 4 to reciprocate up and down with the backpack body 1. The backpack bracket 2 is supported on the back of the human body and is fixed, which can avoid the friction between the backpack body 1 and the back of the human body, and improve the comfort of carrying the backpack. In addition, the movement of the backpack body 1 on the linear slide rail 751 with the mobile bracket 4 can partially offset the deformation of the elastic element (not shown in the figure), and indirectly reduce the pressure of the shoulder strap 3 on the shoulder.

[0042] In addition, when the backpack body 1 moves downward, it can only move vertically downward along the guide rail 51. The backpack body 1 will not pull the elastic element (not shown in the figure) left and right, which increases the mechanical efficiency, buffers the pressure of the shoulder strap 3 on the shoulder, reduces the pressure of the shoulder strap 3 on the shoulder and the ground pushing force of the lower limbs, thereby reducing the fatigue and energy consumption of the human body, and increasing the exercise time and load travel distance. In addition, the setting of the guide rail 51 and the slider 52 allows the mobile bracket 4 to only reciprocate up and down in the vertical direction, enhancing the stability and reliability of the work, improving the mechanical efficiency, and allowing the human body to obtain better comfort when walking with the backpack on its back.

[0043] Of course, the number of guide rails 51 may be 3 or 4, and the number is not limited here. Similarly, each guide rail 51 may be provided with multiple sliders 52 to improve stability. More specifically, a guide groove is provided on the inner side of the guide rail 51, and dovetail blocks, triangular blocks or rectangular blocks, etc., which match the guide groove, are provided on both sides of the slider 52.

[0044] Preferably, the elastic element (not shown in the figure) is an elastic rope or elastic belt with a large stiffness coefficient, wherein two ring-shaped elastic ropes or elastic belts are used to connect the mobile bracket 4 and the backpack bracket 2 respectively, so that the mobile bracket 4 and the backpack bracket 2 can be stably connected and can play a good damping and buffering role. Of course, the elastic element (not shown in the figure) can also be a spring or other elastic object made of elastic material, which is selected according to actual needs and is not limited here.

[0045] Please also refer to Figure 2 As a specific embodiment of the backpack provided by the present invention, the length direction of the first electrostatic adsorption sheet 71 and the length direction of the second electrostatic adsorption sheet 72 are arranged perpendicular to each other.

[0046] In this embodiment, the first electrostatic adsorption sheet 71 adopts a rectangular electrostatic adsorption film, and the second electrostatic adsorption sheet 72 also adopts a rectangular electrostatic adsorption film. The length direction of the first electrostatic adsorption sheet 71 is extended in the vertical direction, and the length direction of the second electrostatic adsorption sheet 72 is extended in the horizontal direction, and the length direction of the first electrostatic adsorption sheet 71 is perpendicular to the length direction of the second electrostatic adsorption sheet 72, so that the second electrostatic adsorption sheet 72 and the first electrostatic adsorption sheet 71 are vertically crossed. Even if the second electrostatic adsorption sheet 72 and the first electrostatic adsorption sheet 71 are stacked in a cross shape, the electrostatic adsorption force generated by the first electrostatic adsorption sheet 71 and the second electrostatic adsorption sheet 72 after being energized is better utilized to form a vibration damping force in the vertical direction, so that the mobile bracket 4 and the backpack bracket 2 are not easy to slide relative to each other, and the vibration amplitude of the backpack body 1 in the vertical direction during the movement of the human body can be effectively reduced, and the impact force borne by the shoulder can be further reduced, thereby avoiding fatigue damage to the shoulder muscles caused by the backpack. Moreover, the adsorption force generated by the two intersecting second electrostatic adsorption sheets 72 and the first electrostatic adsorption sheets 71 after being energized is very large, which is beneficial to increasing the static friction force, and the magnitude of the static friction force can be changed by changing the input voltage, thereby dynamically adjusting the damping of the electrostatic adsorption mechanism 7, and being able to adaptively reduce the vibration amplitude of the backpack body 1 in the vertical direction during the movement of the human body, and further reduce the impact force borne by the shoulders, thereby avoiding fatigue damage to the shoulder muscles caused by the backpack.

[0047] Preferably, in order to further improve the electrostatic adsorption performance between the first electrostatic adsorption sheet 71 and the second electrostatic adsorption sheet 72 and achieve a good shock absorption and damping effect, the first electrostatic adsorption sheet 71 is formed by stacking at least two layers of electrostatic adsorption films, and the second electrostatic adsorption sheet 72 is formed by stacking at least two layers of electrostatic adsorption films. The electrostatic adsorption films are electrostatic adsorption films with good electrostatic adsorption performance.

[0048] In addition, the electrostatic adsorption sheet of the electrostatic adsorption mechanism 7 can be set with the number of layers of electrostatic adsorption film according to demand, that is, the first electrostatic adsorption sheet 71 can include two or more layers of electrostatic adsorption film, the second electrostatic adsorption sheet 72 can include two or more layers of electrostatic adsorption film, and the multi-layer first electrostatic adsorption sheet 71 and the multi-layer second electrostatic adsorption sheet 72 are cross-linked and overlapped with each other, which is beneficial to increase static friction and provide a good electrostatic adsorption damping effect.

[0049] Please also refer to Figure 2 and Figure 3As a specific embodiment of the backpack provided by the present invention, the electrostatic adsorption mechanism 7 also includes a fixed block 73 fixed on the backpack bracket 2 and a gravity sensor 74 connected to the fixed block 73, one end of the first electrostatic adsorption sheet 71 in the length direction is connected to the gravity sensor 74, and the other end of the first electrostatic adsorption sheet 71 in the length direction is connected to the backpack bracket 2, and the gravity sensor 74 is electrically connected to the controller 76.

[0050] In this embodiment, a gravity sensor 74 for measuring the load weight of the backpack body 1 is connected to one end of the first electrostatic adsorption sheet 71 in the length direction. The load weight of the backpack body 1 is measured by the gravity sensor 74, so that the controller 76 can adjust the static friction between the first electrostatic adsorption sheet 71 and the second electrostatic adsorption sheet 72 according to the load weight of the backpack body 1, so as to adjust the damping force generated by the electrostatic adsorption film according to different load weights, better adapt to the user's movement state under different load weights, reduce the impact and pressure of the shoulder strap 3 on the shoulder causing shoulder muscle fatigue and reduce the ground pushing force of the lower limbs, thereby reducing the energy consumption and fatigue of the human body when walking with a backpack.

[0051] Please also refer to Figure 3 and Figure 4 As a specific embodiment of the backpack provided by the present invention, the electrostatic adsorption mechanism 7 also includes an adjustment component 75 for adjusting the tension of the first electrostatic adsorption sheet 71. The adjustment component 75 includes a linear slide 751 fixed on the backpack bracket 2, a moving block 752 slidably arranged on the linear slide 751 to pull the first electrostatic adsorption sheet 71, a positioning member 753 fixed on the backpack bracket 2, and a bolt (not shown in the figure) for pulling the moving block 752. The bolt is rotatably installed on the positioning member 753, and a threaded hole for matching the connecting bolt is opened on the moving block 752. Specifically, a slide groove matching the linear slide 751 is provided on the moving block 752, and the moving block 752 is slidably connected to the linear slide 751 through the slide groove. In addition, the moving block 752 is locked on the positioning member 753 by a bolt or a bolt and a nut, so as to realize the movement and adjustment of the position of the moving block 752 on the linear slide 751, so as to achieve the purpose of adjusting the tension of the first electrostatic adsorption sheet 71. The operation is simple, convenient and practical.

[0052] In this embodiment, a moving block 752 is arranged on the linear slide rail through linear movement and sliding. Under the guidance of the linear slide rail, the moving block 752 stretches the first electrostatic adsorption sheet 71. When the first electrostatic adsorption sheet 71 is adjusted to a suitable degree of tension, the moving block 752 is locked on the positioning member 753 by bolts to position the moving block 752 on the linear slide rail 751, so as to achieve the purpose of adjusting the degree of tension of the first electrostatic adsorption sheet 71 according to actual use needs, so that the electrostatic adsorption mechanism 7 forms a better damping effect, which can effectively reduce the vibration amplitude of the backpack body 1 in the vertical direction during the movement of the human body, and can further reduce the impact force borne by the shoulder, thereby avoiding fatigue damage to the shoulder muscles caused by the backpack.

[0053] Please also refer to Figure 2 , Figure 3 and Figure 5 As a specific embodiment of the backpack provided by the present invention, a first rope winding wheel 8 is rotatably installed on the mobile bracket 4, a second rope winding wheel 9 is rotatably installed on the backpack bracket 2, and the elastic rope is wound around the first rope winding wheel 8 and the second rope winding wheel 9.

[0054] In this embodiment, a first rope winding wheel 8 is installed on the mobile bracket 4 through pivot rotation, and a second rope winding wheel 9 is installed on the backpack bracket 2 through pivot rotation. The elastic rope is movably wound on the mobile bracket 4 and the backpack bracket 2 through the first rope winding wheel 8 and the second rope winding wheel 9 respectively, which not only facilitates the installation and replacement of the elastic rope and improves the installation and replacement efficiency of the elastic rope, but also can further improve the damping and buffering effect of the elastic rope, effectively reduce the vibration amplitude of the backpack, and reduce the pressure of the shoulder strap 3 on the human shoulder.

[0055] Please also refer to Figure 6 As a specific embodiment of the backpack provided by the present invention, a first rope winding groove 81 for positioning the elastic rope is provided on the outer circumference of the first rope winding wheel 8. In this embodiment, the first rope winding groove 81 is provided on the outer circumference of the first rope winding wheel 8, so that the elastic rope is accommodated and positioned in the first rope winding groove 81, avoiding the elastic rope from slipping off the first rope winding wheel 8, enhancing the stability of the elastic rope installation, and enabling the elastic rope to play a good buffering effect. In addition, it is convenient to quickly connect the elastic rope to the mobile bracket 4 through the first rope winding wheel 8, and the operation is convenient.

[0056] Please also refer to Figure 7As a specific embodiment of the backpack provided by the present invention, a second rope winding groove 91 for positioning the elastic rope is provided on the outer circumference of the second rope winding wheel 9. In this embodiment, the second rope winding groove 91 is provided on the outer circumference of the second rope winding wheel 9, so that the elastic rope is accommodated and positioned in the second rope winding groove 91, avoiding the elastic rope from slipping off the second rope winding wheel 9, enhancing the stability of the elastic rope installation, and enabling the elastic rope to play a good buffering effect. In addition, it is convenient to quickly connect the elastic rope to the backpack bracket 2 through the second rope winding wheel 9, and the operation is convenient.

[0057] Please also refer to Figure 2 , Figure 3 and Figure 5 As a specific embodiment of the backpack provided by the present invention, a plurality of first rope winding wheels 8 are installed at intervals on the mobile bracket 4, and a plurality of second rope winding wheels 9 are correspondingly installed on the backpack bracket 2, and the elastic ropes are alternately wound around the first rope winding wheels 8 and the second rope winding wheels 9.

[0058] In this embodiment, a plurality of first rope winding wheels 8 are installed at intervals on the mobile bracket 4, and a plurality of second rope winding wheels 9 are installed at corresponding intervals on the backpack bracket 2. The elastic ropes are alternately wound around the first rope winding wheels 8 and the second rope winding wheels 9, so that the backpack bracket 2 and the mobile bracket 4 are elastically connected, thereby enhancing the stability of the connection between the backpack bracket 2 and the mobile bracket 4, and improving the balance of force on the mobile bracket 4 when the bag body 1 moves up and down on the backpack bracket 2, thereby further improving the shock-absorbing and buffering effect, reducing the vibration amplitude of the backpack, and reducing the pressure and impact force of the shoulder strap 4 on the human shoulder.

[0059] Please also refer to Figure 1 and Figure 2 As a specific embodiment of the backpack provided by the present invention, the backpack further includes a shock-absorbing cushion 10 disposed on a side of the backpack support 2 away from the mobile support 4, and both ends of the shoulder strap 3 are respectively fixedly connected to the shock-absorbing cushion 10. In this embodiment, the shock-absorbing cushion 10 is disposed on the backpack support 2 to further reduce the vibration amplitude of the backpack. In addition, the shock-absorbing cushion is made of a breathable soft material to improve the comfort of the back.

[0060] Specifically, the shoulder straps 3 are two shoulder straps 3 arranged on the shock-absorbing cushion 10. Of course, the shoulder straps 3 can also be shoulder straps 3 and waist belts directly arranged on the backpack frame 2, or shoulder straps 3, waist belts and leg belts arranged on the backpack frame 2. The specific selection can be based on actual needs and is not limited here.

[0061] Please also refer to Figure 3 As a specific embodiment of the backpack provided by the present invention, an inertial sensor 6 for measuring the load state of the backpack body 1 is provided on the backpack bracket 2, and the inertial sensor 6 is electrically connected to the controller 76.

[0062] In this embodiment, an inertial sensor 6 is provided on the backpack bracket 2, and the load state of the backpack body 1 is measured by the inertial sensor 6 to obtain the posture of the backpack body 1 when the human body is walking with the backpack on its back, so as to adaptively adjust the damping force generated by the electrostatic adsorption film according to the different postures of the backpack body 1, better adapt to the movement state of the user in different situations, reduce the impact and pressure of the shoulder strap 3 on the shoulder causing shoulder muscle fatigue and reduce the ground pushing force of the lower limbs, thereby reducing the energy consumption and fatigue of the human body when walking with the backpack on its back.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A backpack, characterized in that: The backpack comprises a backpack body for loading articles, a backpack bracket for supporting the back of a human body, a shoulder strap connected to the backpack bracket, a mobile bracket for supporting and fixing the backpack body, a linear sliding assembly for guiding the mobile bracket to move up and down on the backpack bracket, an elastic element connecting the backpack bracket and the mobile bracket and playing a damping and buffering role, and an electrostatic adsorption mechanism for adjusting the friction damping between the backpack bracket and the mobile bracket, the electrostatic adsorption mechanism comprises a first electrostatic adsorption sheet arranged on the backpack bracket, a second electrostatic adsorption sheet electrostatically adsorbed with the first electrostatic adsorption sheet, and a controller for controlling the size of the electrostatic adsorption force between the first electrostatic adsorption sheet and the second electrostatic adsorption sheet, the second electrostatic adsorption sheet is arranged on the mobile bracket, the length direction of the first electrostatic adsorption sheet and the length direction of the second electrostatic adsorption sheet are arranged perpendicular to each other, and the electrostatic adsorption mechanism also comprises a gravity sensor connected to the backpack bracket.

2. The backpack according to claim 1, characterized in that: One end of the first electrostatic adsorption sheet in the length direction is connected to the gravity sensor, the other end of the first electrostatic adsorption sheet in the length direction is connected to the backpack bracket, and the gravity sensor is electrically connected to the controller.

3. The backpack according to claim 2, characterized in that: The electrostatic adsorption mechanism also includes an adjustment component for adjusting the clamping force between the first electrostatic adsorption sheet and the second electrostatic adsorption sheet, the adjustment component includes a linear slide rail fixed on the backpack bracket, a moving block slidably arranged on the linear slide rail to pull the first electrostatic adsorption sheet, a positioning piece fixed on the backpack bracket and a bolt for pulling the moving block, the bolt is rotatably installed on the positioning piece, and a threaded hole for matching and connecting the bolt is opened on the moving block.

4. The backpack according to claim 1, characterized in that: The first electrostatic adsorption sheet is formed by stacking at least two layers of electrostatic adsorption films, and / or the second electrostatic adsorption sheet is formed by stacking at least two layers of electrostatic adsorption films.

5. The backpack according to claim 4, characterized in that: The elastic element is an elastic rope.

6. The backpack according to claim 5, characterized in that: A first rope winding wheel is rotatably mounted on the mobile bracket, a second rope winding wheel is rotatably mounted on the backpack bracket, and the elastic rope is wound around the first rope winding wheel and the second rope winding wheel.

7. The backpack according to claim 6, characterized in that: A first rope winding groove for positioning the elastic rope is provided on the outer circumferential surface of the first rope winding wheel, and / or a second rope winding groove for positioning the elastic rope is provided on the outer circumferential surface of the second rope winding wheel.

8. The backpack according to claim 6, characterized in that: A plurality of the first rope winding wheels are installed at intervals on the mobile bracket, and a plurality of the second rope winding wheels are correspondingly installed on the backpack bracket, and the elastic rope is alternately wound around the first rope winding wheels and the second rope winding wheels.

9. The backpack according to any one of claims 1 to 8, characterized in that: The backpack bracket is provided with an inertial sensor for measuring the load state of the backpack body, and the inertial sensor is electrically connected to the controller.

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