Air spring labor-saving schoolbag for students

Abstract

The utility model provides a gas spring labor-saving schoolbag for students, which belongs to the technical field of schoolbags and comprises a schoolbag main body, shoulder straps and a movable waistband, the shoulder straps are mounted on the back surface of the schoolbag main body, shoulder positions of the shoulder straps are provided with shoulder protection pressure air cushions, the shoulder protection pressure air cushions are made of elastic materials, and the shoulder protection pressure air cushions are filled with gas; a cross-shaped ventilation groove is formed in the back face of the schoolbag body and divides the back face of the schoolbag body into four areas, back protection pressure air cushions are arranged in the four areas, the four back protection pressure air cushions comprise the two upper back protection pressure air cushions and the two lower back protection pressure air cushions, and the back protection pressure air cushions are made of elastic materials. The back protection pressure air cushion is filled with gas; the movable waistband movably penetrates through a gap between the schoolbag main body and the two lower back protection pressure air cushions, and a waistband buckle is arranged at the end part of the movable waistband. The gas spring student labor-saving schoolbag can greatly reduce the weight borne by the shoulders and the back of a student.

Description

Technical Field

[0001] The utility model belongs to the technical field of school bags, and particularly discloses a labor-saving school bag for students with a gas spring. Background Art

[0002] Schoolbags are used by students to store their stationery and are used almost every day by every student. However, as students' burdens become heavier, the weight of schoolbags is also increasing, which is very harmful to students whose bodies are not yet fully developed. Utility Model Content

[0003] The utility model provides a labor-saving school bag for students with a gas spring, which makes students more labor-saving and comfortable when carrying the school bag.

[0004] The biggest difference between the above-mentioned gas spring student labor-saving backpack and ordinary backpacks is that it adds a pressure air cushion (its labor-saving effect is similar to that of Nike air cushion shoes). It includes a backpack main body, shoulder straps and a movable waist belt; the shoulder straps are installed on the back of the backpack main body, and a shoulder guard pressure air cushion is provided at the shoulder position of the shoulder strap. The shoulder guard pressure air cushion is made of elastic plastic material and is filled with pressurized gas; a cross ventilation groove is provided on the back of the backpack main body, and the cross ventilation groove divides the back of the backpack main body into four areas. Back guard pressure air cushions are provided in all four areas. The four back guard pressure air cushions include two upper back guard pressure air cushions and two lower back guard pressure air cushions. The back guard pressure air cushions are made of elastic plastic material and are filled with pressurized gas; the movable waist belt moves through the gap between the backpack main body and the two lower back guard pressure air cushions, and a waist buckle is provided at the end of the movable waist belt.

[0005] In the above-mentioned gas spring student labor-saving schoolbag, the surface of the back-protecting pressure air cushion is provided with honeycomb breathable cloth.

[0006] In the above-mentioned gas spring student labor-saving backpack, a belt loop is provided between the two lower back protection pressure air cushions; the movable waist belt movably passes through the gaps between the backpack body and the two lower back protection pressure air cushions and the gap between the backpack body and the belt loop.

[0007] In the above-mentioned gas spring student labor-saving schoolbag, a front pocket is provided on the front of the schoolbag body.

[0008] In the above-mentioned gas spring student labor-saving schoolbag, a handle is provided on the top surface of the schoolbag body.

[0009] In the above-mentioned gas spring student labor-saving schoolbag, a net bag is provided on the side of the schoolbag body.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The utility model provides a gas spring labor-saving school bag for students. The main structure of the school bag remains unchanged, but the functions of the shoulder protection pressure air cushion and the back protection pressure air cushion are added. The shoulder protection pressure air cushion and the back protection pressure air cushion are filled with low-pressure gas as springs, and the inflation volume is low-pressure level four (from 1 to 4 kilograms), which can greatly reduce the weight borne by the shoulders and back of students, making it more labor-saving and comfortable for students to carry the school bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is the main view of the gas spring student labor-saving backpack;

[0014] Figure 2 for Figure 1 Rear view;

[0015] Figure 3 for Figure 1 Side view of;

[0016] Figure 4 for Figure 3 Enlarged view of middle Ⅰ (shoulder pad pressure cushion is not squeezed);

[0017] Figure 5 for Figure 3 Enlarged view of middle Ⅰ (shoulder pad pressure cushion is squeezed);

[0018] Figure 6 for Figure 3 Enlarged view of middle II (upper back pressure cushion is not squeezed);

[0019] Figure 7 for Figure 3 Enlarged view of middle II (upper back pressure cushion squeezed);

[0020] Figure 8 for Figure 3 Enlarged view of middle III (the lower back pressure cushion is not squeezed);

[0021] Figure 9 for Figure 3 Enlarged view of middle III (the lower back protector pressure cushion is squeezed).

[0022] In the picture: 1. Backpack body; 2. Shoulder straps; 3. Active waist belt; 4. Shoulder protection pressure cushion; 5. Cross ventilation slots; 6. Upper back protection pressure cushion; 7. Lower back protection pressure cushion; 8. Waist buckle; 9. Belt loop; 10. Front pocket; 11. Handle; 12. Mesh pocket. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described 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. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.

[0024] The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in this disclosure are not drawn strictly according to the actual scale. The specific size and quantity of each structure can be determined according to actual needs. The drawings described in this disclosure are only schematic structural diagrams.

[0025] The present embodiment provides a gas spring student labor-saving backpack, comprising a backpack body 1, a shoulder strap 2 and a movable waist belt 3; the shoulder strap 2 is installed on the back of the backpack body 1, and a shoulder guard pressure air cushion 4 is provided at the shoulder position of the shoulder strap 2, which is made of elastic material and filled with gas; a cross ventilation groove 5 is provided on the back of the backpack body 1, and the cross ventilation groove 5 divides the back of the backpack body 1 into four areas, and each of the four areas is provided with a back guard pressure air cushion, and the four back guard pressure air cushions include two upper back guard pressure air cushions 6 and two lower back guard pressure air cushions 7, which are made of elastic material and filled with gas; the movable waist belt 3 moves through the gap between the backpack body 1 and the two lower back guard pressure air cushions 7, and a waist buckle 8 is provided at the end of the movable waist belt 3.

[0026] In the above-mentioned gas spring student labor-saving schoolbag, the surface of the back-protecting pressure air cushion is provided with honeycomb breathable cloth.

[0027] In the above-mentioned gas spring student labor-saving backpack, a belt loop 9 is provided between the two lower back protection pressure air cushions 7; the movable waist belt 3 movably passes through the gaps between the backpack body 1 and the two lower back protection pressure air cushions 7 and the gap between the backpack body 1 and the belt loop 9.

[0028] In the above-mentioned gas spring student labor-saving backpack, a front pocket 10 is provided on the front of the backpack body 1, a handle 11 is provided on the top surface, and a mesh bag 12 is provided on the side surface.

[0029] The main structure of the backpack has not changed, but the functions of the shoulder protection pressure air cushion 4 and the back protection pressure air cushion have been added. The shoulder protection pressure air cushion 4 and the back protection pressure air cushion both use low-pressure gas as springs.

[0030] The school bag cloth is made of soft, comfortable, lightweight and breathable material, making it more comfortable for students to carry.

[0031] The shoulder guard pressure air cushion 4 is long and hidden in the upper part of the shoulder guard pressure air cushion 4, bearing most of the weight of the entire schoolbag. The shoulder guard pressure air cushion 4 is made of soft and elastic synthetic plastic material, which has good fit with the shoulder and excellent resilience, so that the shoulder load is evenly distributed.

[0032] Four back-protecting pressure cushions are concealed on the back of the backpack. Made of a soft, resilient synthetic plastic material, they conform perfectly to the back, ensuring balanced and comfortable back support. The back of the backpack features a hollow design with a cross-shaped ventilation groove (5) in the center, ensuring excellent ventilation and added comfort in the summer.

[0033] The movable waist belt 3 is one of the main ways of labor-saving technology. Like conventional practices, the tightness can be adjusted. It is wrapped around the waist and can be removed or added as needed. It is convenient and quick. It can bear most of the weight of the schoolbag, and the weight is transferred to the legs through the waist and hips and then to the ground.

[0034] The inflation volume of the pressure air cushion is low pressure level 4 (from 1 to 4 kg), which can be selected according to needs. There are four reasons for using gas as a weight reduction carrier:

[0035] ①Because the gas is clean;

[0036] ②Gas is very easy to obtain;

[0037] ③The gas is pollution-free, which is very important for children;

[0038] ④After being pressurized, the gas can support the weight of the object, cushion the unexpected impact and protect the safety of children.

[0039] The aforementioned gas spring-loaded student backpack operates on the principle of energy recirculation. When a person walks with a backpack on their back, they expend a certain amount of energy. The weight of the backpack is shared by the shoulders, chest, back, and waist, then transferred to the legs and then to the ground. The low-pressure gas spring returns some of this weight to the body through a reaction force. This force recirculation can be considered compensation for the energy expended. If the recirculation rate is 50%, the next time a person walks, they save 50% of their energy. This design approach is similar to Nike's air-filled insoles.

[0040] The above-mentioned gas spring student labor-saving backpack adds pressure air cushions on the shoulders and back of the backpack to reduce fatigue of the shoulder and back muscles and achieve the purpose of weight reduction.

[0041] The pressure of the gas on the inner wall of the pressure cushion is balanced everywhere. When the pressure cushion is under pressure, it becomes thinner and flatter, the gas is compressed, and a rebound force is generated. Nearly half of the energy is returned, overcoming part of the weight of the backpack. The total weight of the backpack = the weight of the shoulder guard pressure cushion + the weight of the back guard pressure cushion + the energy return of the shoulder guard pressure cushion (negative value) + the energy return of the back guard pressure cushion (negative value). This is one of the reasons for saving effort.

[0042] According to the gas pressure principle: P (pressure) = F (pressure) / S (area), the pressure cushion becomes flat when compressed, the area increases and the pressure decreases. This is the second reason for saving effort.

[0043] The pressure air cushion adopts materials with strong resilience. After the gas is compressed, it has strong recovery ability. This recovery ability produces rebound force, which is the third reason for saving effort.

[0044] According to the laws of mechanics, the total weight of the backpack will not disappear, but the total weight of the backpack can be borne separately by the shoulders, chest, back and waist, which has the effect of reducing weight.

[0045] The inventor conducted a force analysis on the backpack, analyzed the force exerted by the backpack's weight on the shoulders, chest, back and waist, and made an analysis table. The analysis data showed that adding air straps and air back pads can indeed greatly reduce the weight of the shoulders. At most, it can reduce the weight of the shoulders by three-quarters. Based on the weight of a backpack of 15 kilograms, the maximum weight reduction is about 11 kilograms, which helps to reduce the weight of students' backpacks.

[0046] Labor-saving school bag function table

[0047] Serial number Project Name Air pressure value Remark 1 principle Energy return principle, similar to Nike pressure air cushion shoes 2 grade Level 4 3 How to use Two Ordinary method and labor-saving method one Common methods 1 Pressure air cushion internal pressure level 1 1kg Reduce the weight by about 80% two labor saving method 1 Pressure air cushion internal pressure level 1 1kg Suitable for light-weight backpacks (e.g. primary school students) 2 Pressure air cushion internal pressure level 2 2kg Suitable for heavy backpacks (e.g. junior and high school students) 3 Pressure air cushion internal pressure level 3 3kg Suitable for heavy bags (e.g. travelers) 4 Pressure air cushion internal pressure level 4 4kg Suitable for backpacks with very heavy weight (such as mountaineering)

[0048] Comparison table of gas spring labor-saving school bags and ordinary school bags

[0049]

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas spring student labor-saving backpack, including a backpack body, shoulder straps and a movable waist belt; It is characterized by: The shoulder strap is installed on the back of the backpack body, and a shoulder guard pressure air cushion is provided at the shoulder position of the shoulder strap. The shoulder guard pressure air cushion is made of elastic plastic material and is filled with pressurized gas. The back of the backpack body is provided with a cross ventilation groove, which divides the back of the backpack body into four areas. The four areas are provided with back protection pressure air cushions, including two upper back protection pressure air cushions and two lower back protection pressure air cushions. The back protection pressure air cushions are made of elastic plastic material and are filled with plastic gas. The movable waist belt movably passes through the gap between the schoolbag main body and the two lower back protection pressure air cushions, and the end of the movable waist belt is provided with a waist buckle.

2. The gas spring student labor-saving school bag according to claim 1, characterized in that: The surface of the back-protecting pressure air cushion is provided with honeycomb breathable cloth.

3. The gas spring student labor-saving school bag according to claim 1 or 2, characterized in that: A belt loop is provided between the two lower back pressure air cushions; The movable waist belt movably passes through the gap between the school bag main body and the two lower back protection pressure air cushions and the gap between the school bag main body and the belt loop.

4. The gas spring student labor-saving school bag according to claim 3, characterized in that: A front pocket is provided on the front of the school bag body.

5. The gas spring student labor-saving school bag according to claim 4, characterized in that: A handle is provided on the top surface of the school bag body.

6. The gas spring student labor-saving school bag according to claim 5, characterized in that: A mesh pocket is provided on the side of the school bag body.

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