Backpack and sitting posture correction and vision protection device

Abstract

The present invention belongs to the technical field of student supplies, and specifically discloses a backpack and a sitting posture correction and vision protection device, wherein the backpack comprises two rectangular lower channel belts, two rectangular front channel belts, a rectangular chest belt, two rectangular shoulder belts and a bag-shaped bag body; the backpack can diversify its functions, that is, when the bag body is loaded with a heavy load, the fit between the center of gravity of the bag body and the student's back is improved, the stability of the bag body when carried is improved, the pressure and backward pulling feeling of the bag body on the student are reduced, and the safety and comfort of use are improved; at the same time, the backpack can be formed into a simple handbag according to needs; in addition, the improved lower channel belt, front channel belt, chest belt and shoulder belt can be connected and assembled into a sitting posture correction and vision protection device, so as to conveniently and practically correct the student's sitting posture and protect the student's vision.

Description

Technical Field

[0001] The invention belongs to the technical field of student supplies and relates to a backpack, in particular to a backpack and a sitting posture correction and vision protection device. Background Art

[0002] At present, most backpacks commonly used by students are of bag-shaped bag structure, with the upper and lower ends of the back of the bag body respectively connected to the upper and lower ends of two shoulder straps to form two shoulder strap structures. However, when such a backpack is loaded with a large number of books and a heavy load, there is a strong feeling of falling when carrying the backpack, and the center of gravity of the bag does not fit the user's back well, which makes the bag body exert a strong downward pressure on the student's body and a backward pulling feeling, resulting in poor student comfort and affecting the health of the student's spine. Especially when the student needs to carry the bag to run a few steps or go up the stairs in a hurry, the unstable center of gravity of the heavily loaded bag is more likely to leave the student's back, further enhancing the feeling of falling and the feeling of being pulled backward, which easily leads to the instability of the student's own center of gravity and reduces the safety of use. The invention patent with publication number CN105411159A discloses a backpack, including a bag body, a shoulder strap on the bag body, and a drawstring connected to the bag body; a bottom supporting strap for supporting the bottom of the bag body is extended downward from the back of the bag body, and the shoulder strap and the bottom supporting strap are arranged as an integrated structure; one end of the drawstring is arranged as a fixed end, and the other end of the drawstring is arranged as a stretching end; the fixed end of the drawstring is fixed to the bottom supporting strap at the bottom of the bag body; the drawstring, the bottom supporting strap and the shoulder strap form a supporting structure; a hollow bag drawstring channel is arranged on the front side surface of the bag body, and the drawstring is extended into the bag drawstring channel; a hollow shoulder drawstring channel is arranged on the shoulder strap, and the drawstring is extended into the shoulder drawstring channel; a hollow turning channel can be arranged on the shoulder strap at the position where the drawstring extends from the exit end of the shoulder drawstring channel, and the drawstring extends from the turning channel to form a chest strap. The backpack in the invention is provided with a bottom support strap at the bottom of the bag body, a drawstring at the front side of the bag body, and a shoulder strap at the back side of the bag body, wherein one end of the bottom support strap is fixedly connected to the bottom of the bag body, the other end of the bottom support strap is connected to one end of the drawstring, the other end of the drawstring is connected to one end of the shoulder strap, the other end of the shoulder strap is connected to one end of the bottom support strap fixed to the bottom of the bag body, that is, the other end of the shoulder strap is also fixedly connected to the bottom of the bag body, so that the drawstring, the bottom support strap and the shoulder strap are connected in sequence to form a supporting structure for the bag body. At the same time, the scheme provides two tubular drawstring channels on the front side of the bag body, so that the drawstring passes through the drawstring channels, thereby playing a guiding and limiting role on the drawstring through the drawstring channels, thereby achieving a guiding and limiting role on the supporting structure formed by the drawstring, the bottom support strap and the shoulder strap.The above structure of the backpack of the invention, when there are many books and heavy load in the bag, the supporting structure composed of the drawstring, the bottom support belt and the shoulder strap plays a wrapping supporting role on the bag, and the chest strap is formed by the drawstring extending from the turning channel, so that the overall load-bearing structure forms an integrated, well-fitting and stable wrapping supporting structure, thereby reducing the downward pressure and backward pulling feeling of the heavy-load bag on the student's body, improving the comfort of the students when using it, and reducing the impact on the students' spinal health, especially when the students are in a hurry and need to run a few steps or climb stairs, the above-mentioned integrated wrapping supporting structure can better achieve the above-mentioned effect of reducing the pressure and backward pulling feeling, improving comfort performance and safety of use. However, the backpack of the prior art has a single function and cannot achieve the above-mentioned effect while conveniently and practically correcting the students' sitting posture and protecting the students' eyesight based on the students' actual learning life and use needs. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a backpack and a sitting posture correction and vision protection device to solve the problem that the backpack in the prior art has a single function and is unable to improve the fit between the center of gravity of the backpack and the student's back when the backpack is loaded with a heavy load, improve the stability of the backpack when carried, and reduce the pressure and backward pulling feeling of the backpack on the students. At the same time, it can conveniently and practically correct the students' sitting posture and protect the students' eyesight based on their actual learning, life and use needs.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] On one hand, the present invention provides a backpack, which comprises two rectangular lower channel belts, two rectangular front channel belts, a rectangular chest belt, two rectangular shoulder belts and a bag-shaped bag body; the two lower channel belts are evenly distributed on the left and right sides below the bag body, and at least two lower sub-snap buttons evenly distributed along the front and rear directions are respectively arranged on the left and right sides of the front and rear ends of the two lower channel belts, and lower female snap buttons matching the lower sub-snap buttons are respectively arranged on the front and rear ends of the bottom surface of the bag body, and the two lower channel belts are connected to the bottom surface of the bag body through the lower sub-snap buttons and the lower female snap buttons respectively. The open gap between the belt and the bottom surface of the bag body along the front-to-back direction constitutes a lower channel; the two front channel belts are evenly distributed on the left and right sides of the front of the bag body, and at least two front sub-snap buttons evenly distributed in the up-down direction are respectively arranged on the left and right sides of the front and rear ends of the two front channel belts, and front mother snap buttons matching the front sub-snap buttons are respectively arranged on the upper and lower ends of the front side of the bag body, and the two front channel belts are connected to the front side of the bag body through the front sub-snap buttons and the front mother snap buttons respectively, and the open gap between the front channel belt and the front side of the bag body along the front-to-back direction constitutes a front channel; the two shoulder straps pass through the left and right sides of the bag body in turn. The lower channel and front channel of the bag body, and the lower channel and front channel of the right side, and one end and the other end of the shoulder strap are respectively connected at the rear of the bag body by adjustment buckles; the upper end and lower end of the left and right sides of the chest strap are respectively provided with at least two neutron snaps evenly distributed in the left and right directions, and the two shoulder straps in the middle of the rear side of the bag body are respectively provided with middle mother snaps matching the upper son snaps, and the left and right sides of the chest strap are respectively connected to the two shoulder straps by the neutron snaps and the middle mother snaps; the front of the shoulder straps are respectively provided with auxiliary straps in a rectangular strip, and the auxiliary straps are all located at the rear of the bag body, and the upper ends of the auxiliary straps are connected to the shoulder straps above the chest strap The lower end of the auxiliary strap is connected with the shoulder strap below the adjustment buckle; the left side of the lower end of the left auxiliary strap, the right side of the lower end of the right auxiliary strap, the left side of the lower end of the left shoulder strap in front of the bag body, and the right side of the lower end of the right shoulder strap in front of the bag body are respectively provided with outer female snaps matching the lower sub-snap; the right side of the lower end of the left auxiliary strap, the left side of the right auxiliary strap, the right side of the lower end of the left shoulder strap in front of the bag body, and the left side of the lower end of the right shoulder strap in front of the bag body are respectively provided with inner female snaps matching the front sub-snap; the upper ends of the auxiliary straps are respectively provided with upper female snaps matching the middle sub-snap.

[0006] The backpack of the present application is provided with shoulder straps passing through the lower channel at the bottom of the bag body and the front channel at the front, and then the two ends of the shoulder straps are connected at the rear of the bag body by adjusting buckles to form an annular structure wrapped around the outer periphery of the bag body, so that the shoulder straps constitute an overall structure that wraps around the bag body. After the user carries the bag body on his back through the shoulder straps, the shoulder straps can cooperate with the chest straps that are blocked at the front of the user's body to carry the heavily loaded bag body as a whole and wrap it around the user's back, thereby improving the fit between the center of gravity of the bag body and the user's back, improving the stability of the bag body when carried, and reducing the pressure and backward pulling feeling of the bag body on the student; wherein the end of the chest strap can be connected or disconnected with the shoulder straps through the neutron snap button and the middle mother snap button, so as to facilitate the user to carry the bag body or put down the bag body. Specifically, when the bag body needs to be carried on the back, the user carries the bag body on the back through the shoulder straps, and then the two ends of the chest strap are connected to the shoulder straps. When the bag body needs to be put down, the connection between the neutron snap button and the middle mother snap button at one end of the chest strap is unfastened, and the user can come out of the limiting binding structure of the chest strap to put down the backpack.

[0007] When the shoulder strap is not needed and the bag body is only used as a handbag, the channel straps and shoulder straps can be removed by snaps, and a hand strap can be connected to the top of the bag body. That is, the center of the top of the bag body can be connected to the two ends of the hand strap.

[0008] In addition, in order to prevent the shoulder straps from moving along the length direction in each channel when the user uses the backpack, matching fixed snaps can be provided on the inner side of the shoulder straps at the front and bottom of the bag body and the outer side of the front and bottom of the bag body. The snaps are fixedly connected, so that the shoulder straps can be prevented from moving along the length direction in each channel. For example, the fixed snaps are provided on the inner side of the shoulder straps in the lower channel and the front channel and the outer side of the bag body, or the fixed snaps are provided on the inner side of the shoulder straps at the bottom and top of the bag body and the outer side of the bag body, or the fixed snaps are provided in the lower channel and the front channel, and on the inner side of the shoulder straps at the bottom and top of the bag body and the outer side of the bag body. The number and distribution of the fixed snaps can be set as needed, such as the number of fixed snaps in each location is four groups, and each group of fixed snaps is evenly distributed in a rectangle.

[0009] As mentioned above, the structure of the backpack of the present application is to solve the problem that the backpack in the prior art has a single function and cannot improve the fit between the center of gravity of the bag and the student's back when the bag is loaded with a heavy load, improve the stability of the bag when carried, reduce the pressure and backward pulling feeling of the bag on the students, and at the same time, based on the students' actual learning, life and use needs, conveniently and practically correct the students' sitting posture and protect the students' eyesight; to this end, the present application provides a backpack and a sitting posture correction and vision protection device on the other hand, which is intended to be composed of the lower channel belt, front channel belt, chest strap and shoulder strap of the backpack provided by one aspect of the present application. By combining and connecting the lower channel belt, front channel belt, chest strap and shoulder strap of the backpack of the present application, a device that can correct the user's sitting posture and protect the user's eyesight is formed, so that the functions of the backpack of the present application are diversified to meet the students' actual learning, life and use needs.

[0010] Another aspect of the present application provides a sitting posture correction and vision protection device, including the lower channel belt, front channel belt, chest strap, shoulder strap and auxiliary belt in the backpack described in one aspect of the present application; the lower sub-snaps at both ends of each lower channel belt along its length direction are respectively connected to the outer female snaps of an auxiliary belt and its adjacent shoulder strap; the front sub-snaps at both ends of a front channel belt along its length direction are respectively connected to the inner female snaps on the two auxiliary belts, and the front sub-snaps at both ends of another front channel belt along its length direction are respectively connected to the inner female snaps of the two shoulder straps; the middle snaps at both ends of the chest strap along its length direction are respectively connected to the upper female snaps on the two auxiliary belts.

[0011] The specific usage scenario of the above-mentioned sitting posture correction and vision protection device of the present application can be that after the student carries the backpack described in one aspect of the present application to school or home, the student disconnects the lower sub-snap button of the lower channel strap from the lower mother snap button of the bag body, so that the lower channel strap is separated from the bag body; disconnects the front sub-snap button of the front channel strap from the front mother snap button of the bag body, so that the front channel strap is separated from the bag body, and disconnects the middle snap button of the chest strap from the middle mother snap button of the bag body, so that the chest strap is separated from the bag body; at the same time, remove the shoulder strap, and then connect the above-mentioned disassembled lower channel strap, front channel strap, chest strap and shoulder strap according to the structure of the sitting posture correction and vision protection device described in another aspect of the present application to form the above-mentioned sitting posture correction and vision protection device. It can be seen that the two lower channel straps and the two front channel straps are connected in sequence and at intervals to the lower part of the ring formed by the front part of the shoulder strap and the auxiliary strap, so that the two lower channel straps and the two front channel straps are in sequence and at intervals to form a horizontal The upper parts of the two auxiliary belts are limitedly sleeved on the chair back through the chest belt, so that the upper parts of the two shoulder straps are limitedly sleeved on the chair back to prevent the auxiliary belts and the upper parts of the shoulder straps from sliding off the chair back. At this time, the student can sit on the chair, pass both arms through the annular spaces between the rear parts of the two shoulder straps and the auxiliary belts respectively, and then extend them forward and put them on the table to read and write. The auxiliary belts and shoulder straps sleeved on the chair back can correct the students' sitting posture and limit the distance between the students and the books to prevent the students from being too close to the books, thereby protecting eyesight and not affecting the students' sight when reading and writing. When the students need to carry the schoolbag home or to school, the transverse and longitudinal annular sleeve structures composed of the lower channel belt, the front channel belt and the shoulder straps, and the upper limiting structure composed of the chest strap are disassembled by releasing the connection of the snaps, and then the lower channel belt, the front channel belt, the chest strap and the shoulder straps are connected and assembled with the bag body according to the structure of the backpack described in one aspect of the application, so that the backpack described in one aspect of the application can be obtained, and the backpack can be carried when going to or going to school.

[0012] In addition, all sub-snaps are preferably the parts of the snaps with raised clamping heads, and all mother snaps are preferably the parts of the snaps with elastic clamping edge grooves. In this way, as described in the backpack solution of one aspect of the present application, all sub-snaps are arranged on the lower channel strap, the front channel strap and the chest strap, and all mother snaps are arranged on the bag body and the auxiliary strap. The lower channel strap, the front channel strap and the chest strap need to be alternately connected to the bag body or the auxiliary strap according to the students' needs for the backpack or the sitting posture correction and vision protection device. In this way, the elastic clamping edge grooves on the bag body or the auxiliary strap are alternately matched with the raised clamping heads on the lower channel strap, the front channel strap and the chest strap for disassembly, assembly and connection, which can It can reduce the wear of the elastic edge of the elastic card edge groove and increase the service life of the snap button combination structure, thereby increasing the service life of the backpack and the sitting posture correction and vision protection device. On the contrary, if the lower channel belt, the front channel belt and the chest belt are provided with elastic card edge grooves, and the bag body or the auxiliary belt are provided with raised card heads, then no matter the students are carrying the backpack or using the sitting posture correction and vision protection device, the elastic card edge grooves on the lower channel belt, the front channel belt and the chest belt are disassembled and assembled and are continuously in a connected state, which increases the wear of the elastic card edge of the elastic card edge groove, resulting in a reduction in the service life of the backpack and the sitting posture correction and vision protection device.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The backpack and the sitting posture correction and vision protection device of the present invention can solve the problem that the backpack in the prior art has a single function and cannot improve the fit of the center of gravity of the backpack and the student's back when the backpack is loaded with a heavy load, improve the stability of the backpack when carried, and reduce the pressure and backward pull-down feeling of the backpack on the student. At the same time, it can conveniently and practically correct the student's sitting posture and protect the student's vision based on the student's actual learning life and use needs. It can diversify the functions of the backpack, that is, it can improve the fit of the center of gravity of the backpack and the student's back when the backpack is loaded with a heavy load, improve the stability of the backpack when carried, reduce the pressure and backward pull-down feeling of the backpack on the student, and improve the safety and comfort of use; at the same time, it can form a simple handbag according to needs; in addition, it can also connect and assemble the improved lower channel belt, front channel belt, chest belt and shoulder belt into a sitting posture correction and vision protection device, so as to conveniently and practically correct the student's sitting posture and protect the student's vision. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a bottom view of the backpack of the first embodiment.

[0016] Figure 2 The figure shows a bottom view of the backpack body of the first embodiment.

[0017] Figure 3Shown is a front view of the backpack of the first embodiment.

[0018] Figure 4 Shown is a front view of the backpack body of the first embodiment.

[0019] Figure 5 Shown is a left side view of the backpack of the first embodiment.

[0020] Figure 6 Shown is a rear view of the backpack of the first embodiment.

[0021] Figure 7 Shown is a front view of the backpack of the second embodiment.

[0022] Figure 8 Shown is a side view of the backpack of the third embodiment.

[0023] Fig. 9 Shown is a front view of the backpack body and front channel belt of the fourth embodiment.

[0024] Fig.10 Shown is a front view of the backpack body and front channel belt of the fifth embodiment.

[0025] Fig.11 Shown is a front view of the backpack body and front channel belt of the sixth embodiment.

[0026] Fig.12 Shown is a left side view of the sitting posture correction and vision protection device of embodiment 7.

[0027] Fig.13 Shown is a front view of the sitting posture correction and vision protection device of embodiment 7.

[0028] Fig.14 Shown is a rear view of the sitting posture correction and vision protection device of the seventh embodiment.

[0029] Fig.15 Shown are side views of the school bag and the sitting posture correction and vision protection device of the eighth embodiment.

[0030] Fig.16 Shown is a top view of the buckles of the school bag and the sitting posture correction and vision protection device of the eighth embodiment.

[0031] Fig.17 Shown is a top view of the female snaps of the school bag and the sitting posture correction and vision protection device of the eighth embodiment.

[0032] In the figure: 1 is a lower channel belt, 101 is a lower sub-snap button, 102 is a lower channel, 2 is a front channel belt, 201 is a front sub-snap button, 202 is a front channel, 203 is a lower sealing snap button, 204 is a zipper, 205 is an upper sealing snap button, 206 is a connecting snap button, 3 is a chest strap, 301 is a middle snap button, 4 is a shoulder strap, 41 is an auxiliary belt, 401 is an adjustment buckle, 402 is a middle mother snap button, 403 is an outer mother snap button, 404 is an inner mother snap button, 405 is an upper mother snap button, 5 is a bag body, 501 is a lower mother snap button, 502 is a front mother snap button, 503 is a cover plate, 6 is a hand strap, 7 is a fixed snap button, 8 is a chair back, 9 is a raised clamp head, 10 is an elastic clamp edge groove, and 11 is an elastic clamp edge.

[0033] The front and rear directions in the entire specification refer to the left and right directions in the above-mentioned left views, and also refer to the up and down directions in the above-mentioned bottom views; the up and down directions in the entire specification refer to the up and down directions in the above-mentioned left views, front views and rear views, respectively; the left and right directions in the entire specification refer to the left and right directions in the above-mentioned front views, and because the backpack and sitting posture correction and vision protection device of the present application are left-right mirror-symmetrical structures, the left and right directions in the entire specification can also refer to the left and right directions of the above-mentioned rear views and bottom views, respectively. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0035] Embodiment 1

[0036] A backpack, comprising two rectangular lower channel straps 1, two rectangular front channel straps 2, a rectangular chest strap 3, two rectangular shoulder straps 4 and a bag-shaped bag body 5; Figure 1 The figure shows a bottom view of the backpack of the present embodiment, wherein two lower channel belts 1 are evenly distributed on the left and right sides below the bag body 5, at least two lower sub-snap buttons 101 evenly distributed along the front-to-back direction are respectively provided on the left and right sides of the front and rear ends of the two lower channel belts 1, and lower female snap buttons 501 matching the lower sub-snap buttons 101 are respectively provided on the front and rear ends of the bottom surface of the bag body 5, the two lower channel belts 1 are connected to the bottom surface of the bag body 5 through the lower sub-snap buttons 101 and the lower female snap buttons 501, respectively, and the opening gap between the lower channel belts 1 and the bottom surface of the bag body 5 along the front-to-back direction constitutes a lower channel 102; Figure 2 FIG. 2 is a bottom view of the backpack body of the present embodiment. Figure 3The figure shows a front view of the backpack of the present embodiment, wherein two front channel belts 2 are evenly distributed on the left and right sides of the front of the bag body 5, and at least two front sub-snap buttons 201 evenly distributed along the up-down direction are respectively arranged on the left and right sides of the front and rear ends of the two front channel belts 2, and front mother snap buttons 502 matching the front sub-snap buttons 201 are respectively arranged at the upper and lower ends of the front side of the bag body 5, and the two front channel belts 2 are connected to the front side of the bag body through the front sub-snap buttons 201 and the front mother snap buttons 502, respectively, and the opening gap between the front channel belts 2 and the front side of the bag body 5 along the front-to-back direction constitutes the front channel 202; Figure 4 FIG. 2 is a front view of the backpack body of the first embodiment. Figure 5 The left side view of the backpack of this embodiment is shown, and the two shoulder straps 4 pass through the lower channel 102 and the front channel 202 on the left side, and the lower channel 102 and the front channel 202 on the right side, respectively, and one end and the other end of the shoulder strap 4 are connected at the rear of the bag body 5 through the adjustment buckle 401; Figure 6 The figure shows a rear view of the backpack of this embodiment, wherein the upper and lower ends of the left and right sides of the chest strap 3 are respectively provided with at least two neuter snap buttons 301 evenly distributed in the left and right directions, and the two shoulder straps 4 in the middle of the rear side of the bag body 5 are respectively provided with middle female snap buttons 402 matching the upper sub-snap buttons 301, and the left and right sides of the chest strap 3 are respectively connected to the two shoulder straps 4 through the neuter snap buttons 301 and the middle female snap buttons 402; the front of the shoulder straps 4 are respectively provided with auxiliary straps 41 in a rectangular strip, and the auxiliary straps 41 are all located at the rear of the bag body 5, the upper ends of the auxiliary straps 41 are connected to the shoulder straps 4 above the chest strap 3, and the lower ends of the auxiliary straps 41 are connected to the shoulder straps 4 below the adjustment buckle 401. The bag body 5 is connected with the bag 4; the left side of the lower end of the auxiliary strap 41 on the left side, the right side of the lower end of the auxiliary strap 41 on the right side, the left side of the lower end of the shoulder strap 5 on the left side in front of the bag body 5, and the right side of the lower end of the shoulder strap 4 on the right side in front of the bag body 5 are respectively provided with outer female snaps 403 matching with the lower sub-snap 101; the right side of the lower end of the auxiliary strap 41 on the left side, the left side of the auxiliary strap 41 on the right side, the right side of the lower end of the shoulder strap 5 on the left side in front of the bag body 5, and the left side of the lower end of the shoulder strap 4 on the right side in front of the bag body 5 are respectively provided with inner female snaps 404 matching with the front sub-snap 201; the upper ends of the auxiliary straps 41 are respectively provided with upper female snaps 405 matching with the neutral snaps 301.

[0037] The backpack of the present application connects its lower channel belt 1 with the bottom surface of the bag body 5 to form a lower channel 102; the front channel belt 2 is connected with the front side surface of the bag body 5 to form a front channel 202; after the shoulder strap 4 passes through the lower channel 102 at the bottom of the bag body 5 and the front channel 202 at the front, the two ends of the shoulder strap 4 are connected at the rear of the bag body 5 through the adjustment buckle 401 to form an annular structure wrapped around the outer periphery of the bag body 5, so that the shoulder strap 4 forms an overall structure that wraps around the bag body 5. After the user carries the bag body 5 on his back through the shoulder strap 4, and then cooperates with the chest strap 3 on the front side of the user's body, the heavily loaded bag body 5 can be completely picked up and wrapped around the user's back, thereby improving the fit between the center of gravity of the bag body 5 and the user's back, improving the stability of the bag body when carried, and reducing the pressure and backward pulling feeling of the bag body on the students; the circumference of the annular structure of the shoulder strap 4 can be adjusted by adjusting the buckle 401, which is suitable for users of different body shapes. The ends of the chest strap 3 can be connected or disconnected with the shoulder strap 4 through the neutron snap button 301 and the middle female snap button 402, so as to facilitate the user to carry the bag 5 or put down the bag 5. For example, when the bag 5 needs to be carried, the user passes the arm through the ring structure of the shoulder strap 4 to carry the bag 5, and then connects the two ends of the chest strap 3 with the shoulder strap 4. When the bag 5 needs to be put down, the user unfastens the connection between the neutron snap button 301 and the middle female snap button 402 at one end of the chest strap 3, and the user can come out of the limit restraint structure of the chest strap 3 to put down the backpack.

[0038] When the user passes his arm through the annular structure of the shoulder strap 4, the auxiliary strap 41, as a component of the shoulder strap 4, the user's arm can be inserted between the auxiliary strap 41 and the bag body 5, or between the auxiliary strap 41 and the shoulder strap 4. When the user's arm is inserted between the auxiliary strap 41 and the shoulder strap 4, the auxiliary strap 41 can further fix the user's arm. At this time, the auxiliary strap 41 is preferably an elastic band, which can improve its fixation effect on the arm and improve the stability of use. In addition, the auxiliary strap 41 can also play a cushioning role between the user's shoulder, back, arm and the bag body 5. At this time, the auxiliary strap 41 is preferably a tubular belt with a flexible filling layer such as a sponge layer inside to improve the cushioning effect and comfort of use. It should be noted that the upper end of the auxiliary strap 41 is preferably fixedly connected to the shoulder strap 4 by a structure such as a suture; the lower end of the auxiliary strap 41 can be fixedly connected to the shoulder strap 4 by a suture. At this time, if the annular structure of the shoulder strap 4 needs to be taken out from the lower channel 102 and the front channel 202, or the annular structure of the shoulder strap 4 needs to be installed in the lower channel 102 and the front channel 202, the connection between the lower channel belt 1 and the left or right side of the front channel belt 2 and the bag body 5 can be opened, and then the annular structure of the shoulder strap 4 can be removed as a whole from the periphery of the bag body 5; the lower end of the auxiliary strap 41 can also be movably connected to the shoulder strap 4 by an auxiliary snap button. At this time, if the shoulder strap 4 needs to be removed The annular structure of the strap 4 is taken out from the lower channel 102 and the front channel 202, or the annular structure of the shoulder strap 4 needs to be installed into the lower channel 102 and the front channel 202. In addition to the aforementioned method of opening the connection between the lower channel strap 1 and the left or right side of the front channel strap 2 and the bag body 5, the annular structure of the shoulder strap 4 can also be opened by opening the auxiliary snap button and then opening the adjustment buckle 401, and then the shoulder strap 4 can be pulled out from the lower channel 102 and the front channel 202, or the shoulder strap 4 can be passed through the lower channel 102 and the front channel 202, and then the shoulder strap 4 and the auxiliary strap 41 are connected by the auxiliary snap button, and the two ends of the shoulder strap 4 are connected by the adjustment buckle 401.

[0039] Embodiment 2

[0040] Based on the backpack described in Example 1, the backpack of this embodiment can further include a rectangular strip of hand strap 6 at the middle of the top of the bag body 5, and both ends of the hand strap 6 are fixedly connected to the top of the bag body 5. Figure 7 Shown is the front view of the backpack of the present embodiment. At this time, when the shoulder strap 4 is not needed and the bag body 5 is only needed to be used as a handbag, each channel belt and the shoulder strap 4 can be removed by each snap button, and the bag body 5 can be extracted by the hand strap 6.

[0041] Embodiment 3

[0042] On the basis of the backpack described in the first or second embodiment, the backpack of this embodiment can further be provided with matching fixing snaps 7 on the inner side of the shoulder straps 4 at the front and bottom of the bag body 5 and on the outer side of the front and bottom of the bag body 5. Figure 8 The side view of the backpack of the present embodiment is shown. At this time, when the user carries the backpack, the shoulder strap 4 and the bag body 5 are first fixedly connected by the fixed snaps 7, so that the shoulder strap 4 can be prevented from moving along its length direction in each channel.

[0043] Specifically, for example, the fixed snaps 7 are arranged on the inner side of the shoulder straps 4 and the outer side of the bag body 5 in the lower channel 102 and the front channel 202, or the fixed snaps 7 are arranged on the inner side of the shoulder straps 4 and the outer side of the bag body 5 at the bottom and top of the bag body 5, or the fixed snaps 7 are arranged on the lower channel 102 and the front channel 202, and on the inner side of the shoulder straps 4 and the outer side of the bag body 5 at the bottom and top of the bag body 5. The number and distribution of the fixed snaps 7 can be set as needed, for example, the number of the fixed snaps 7 at each location is four groups, and each group of fixed snaps 7 is evenly distributed in a rectangle.

[0044] Embodiment 4

[0045] Based on the backpacks in any one of the first to third embodiments, the backpack of this embodiment can further be connected between the lower part of the front channel belt 2 and the bag body 5 via a lower sealing snap 203. Fig. 9 The front view of the bag body and the front channel belt of the backpack of this embodiment is shown. In this way, since the lower part of the front channel belt 2 and the bag body 5 can be connected to form a lower partially sealed structure through the lower sealing snap button 203, when the shoulder strap 4 is not needed, the front channel belt 2 can be left undetached, and items such as water cups and umbrellas can be placed in the front channel 202 formed by the front channel belt 2 and the front side of the bag body 5, so that the front channel 202 with the closed lower end can function as a storage bag. At this time, the number of the front sub-snap button 201 and the front mother snap button 502 can be increased from top to bottom as needed to meet the need of using the front channel 202 as a storage bag.

[0046] Embodiment 5

[0047] Based on the backpack described in the fourth embodiment, the backpack of this embodiment can further be provided with matching zippers 204 on the left side, the lower side and the right side of the front channel belt 2 and the front side of the bag body 5. Fig.10The figure shows a front view of the bag body and the front channel belt of the backpack of this embodiment. In this way, since the lower part of the front channel belt 2 and the bag body 5 can be connected by the zipper 204 to form a structure with a completely closed lower part, when the shoulder strap 4 is not needed, the front channel belt 2 can be left undetached, and in addition to items such as water cups and umbrellas, items such as pens and rulers can be placed in the front channel 202 formed by the front channel belt 2 and the front side of the bag body 5, so that the front channel 202 with a closed lower end can function as a storage bag.

[0048] Embodiment 6

[0049] In the fourth or fifth embodiment, if Fig.11 The figure shows a front view of the bag body and the front channel belt of this embodiment. Furthermore, a rectangular cover sheet 503 located in front of the front channel belt 2 is provided on the front side of the bag body 5, and the upper side of the cover sheet 503 is connected to the bag body 5 above the front channel belt 2. Taking the fourth embodiment as an example, in this case, the cover sheet 503 covering the upper and front side of the front channel belt 2, that is, also covering the upper and front side of the front channel 202, can cover the articles placed in the front channel 202, and protect the articles to a certain extent.

[0050] Further, the lower part of the cover sheet 503 is connected to the upper part of the front channel belt 2 through the upper sealing snap 205. The upper part of the front channel 202 is sealed by connecting the cover sheet 503 to the front channel belt 2 to prevent the articles placed in the front channel 202 from falling.

[0051] Furthermore, the lower part of the cover sheet 503 is folded upward and connected to the bag body 5 above the front channel belt 2 through the connecting snap 206. In this way, when there is no need to place items in the front channel 202, especially when the shoulder strap 4 needs to be placed in the front channel 202, the lower part of the cover sheet 503 is folded upward and connected to the bag body 5 above the front channel belt 2 through the connecting snap 206 to open the upper end of the front channel 202, and at this time, the lower sealing snap 203 at the lower part of the front channel belt 2 is opened. If it is the structure described in Example 5, the zipper 204 also needs to be opened, and then the lower end of the front channel 202 is opened, so that the shoulder strap 4 can pass through the front channel 202 as needed.

[0052] Embodiment 7

[0053] A sitting posture correction and vision protection device comprises a lower channel belt 1, a front channel belt 2, a chest belt 3, a shoulder belt 4 and an auxiliary belt 41 in a backpack as described in any one of the first to sixth embodiments; Fig.12The figure shows a left view of the sitting posture correction and vision protection device of the present embodiment; the lower sub-snap buttons 101 at both ends of each lower channel belt 1 along its length direction are respectively connected to an auxiliary belt 41 and the outer female snap buttons 403 of the adjacent shoulder belt 4; the front sub-snap buttons 201 at both ends of a front channel belt 2 along its length direction are respectively connected to the inner female snap buttons 404 on the two auxiliary belts 41, and the front sub-snap buttons 201 at both ends of another front channel belt 2 along its length direction are respectively connected to the inner female snap buttons 404 of the two shoulder belts 4; Fig.13 The figure shows a front view of the sitting posture correction and vision protection device of this embodiment; the neutron snap buttons 301 at both ends of the chest strap 3 along its length direction are connected to the upper female snap buttons 405 on the two auxiliary straps 41 respectively. Fig.14 Shown is a rear view of the sitting posture correction and vision protection device of this embodiment.

[0054] In the actual application of the sitting posture correction and vision protection device of this embodiment, after the student carries the backpack described in any one of Embodiments 1 to 6 to school or home, the student disconnects the lower sub-snap 101 of the lower channel belt 1 from the lower female snap 501 of the bag body 5, so that the lower channel belt 1 is separated from the bag body 5; disconnects the front sub-snap 201 of the front channel belt 2 from the front female snap 502 of the bag body 5, so that the front channel belt 2 is separated from the bag body 5; disconnects the middle sub-snap 301 of the chest belt 3 from the middle ... The snap button 402 is released to separate the chest strap 3 from the bag body 5; the shoulder strap 4 is removed at the same time, and then the lower channel strap 1, the front channel strap 2, the chest strap 3 and the shoulder strap 4 removed are connected according to the structure of the sitting posture correction and vision protection device described in this embodiment to form the sitting posture correction and vision protection device. It can be seen that the two lower channel straps 1 and the two front channel straps 2 are sequentially connected to the lower part of the ring formed by the front part of the shoulder strap 4 and the auxiliary strap 41 at intervals. Then, the two lower channel straps 1 and the two front channel straps 2 The two auxiliary belts 41 are arranged in a horizontal manner and are spaced apart from each other to form a horizontal annular sleeve structure. The front part of the shoulder strap 4 and the auxiliary belt 41 form two longitudinal annular sleeve structures. The upper part of the longitudinal annular sleeve structure and the chest belt 3 connected between the two auxiliary belts 41 form an upper limiting structure. The backrest 8 of the chair can be extended into and sleeved in the longitudinal annular sleeve structure through the horizontal annular sleeve structure. The upper parts of the two auxiliary belts 41 are limitedly sleeved on the backrest 8 through the chest belt 3, thereby limiting the upper parts of the two shoulder straps 4 on the backrest 8 to avoid the auxiliary belts 41 from being pressed against the backrest 8. The auxiliary belt 41 and the upper part of the shoulder strap 4 slide off the chair back 8. At this time, the student can sit on the chair, pass both arms through the annular space between the rear parts of the two shoulder straps 4 and the auxiliary belt 41, and then stretch them forward and put them on the table to read and write. The auxiliary belt 41 and the shoulder strap 4 mounted on the chair back 8 can correct the student's sitting posture and limit the distance between the student and the book, preventing the student from being too close to the book, thereby protecting eyesight and not affecting the student's line of sight when reading and writing.

[0055] It should be noted that the shoulder strap 4 is used as the force-bearing end for the student's sitting posture correction and the reading and writing distance adjustment and maintenance, which can better ensure its force strength and the correction and adjustment and maintenance effect. At this time, the student can adjust the size of the annular structure of the shoulder strap 4 by adjusting the buckle 401 to be suitable for students of different body shapes and for the needs of sitting posture correction and reading and writing distance adjustment and maintenance in different situations. In contrast, if an elastic band is set on the rear side of the shoulder strap 4, and then the student's arm is passed through the space formed by the elastic band and the shoulder strap 4, that is, the elastic band is used as the force-bearing end for the student's sitting posture correction and the reading and writing distance adjustment and maintenance, the space for the student's upper body activities can indeed be flexibly changed, that is, the sitting posture correction and the adjustment of the reading and writing distance are indeed more flexible and convenient, but its force strength cannot meet the needs of ensuring the correction and adjustment and maintenance effect. Then, when the student needs to carry the schoolbag home or to school, the transverse and longitudinal annular sleeve structures composed of the lower channel belt 1, the front channel belt 2 and the shoulder strap 4, and the upper limiting structure composed of the chest strap 3 are disassembled by releasing the connection of each snap button, and then the lower channel belt 1, the front channel belt 2, the chest strap 3 and the shoulder strap 4 are connected and assembled with the bag body 5 according to the structure of the backpack described in one aspect of the present application, so that the backpack as described in any one of Examples 1 to 6 can be obtained, so that the student can carry the bag body 5 to go to school or go to school.

[0056] Embodiment 8

[0057] On the basis of the seventh embodiment, the sitting posture correction and vision protection device of this embodiment, and the backpack based thereon, can be further characterized in that the lower snap button 101, the front snap button 201 and the middle snap button 301 are snap button parts with a protruding clamping head 9, and the outer female snap button 403, the inner female snap button 404, the upper female snap button 405, the lower female snap button 501, the front female snap button 502 and the middle female snap button 402 are snap button parts with an elastic clamping edge groove 10. Fig.15 The figure shows a side view of the snap button portion with a raised clip of the sitting posture correction and vision protection device of this embodiment. Fig.16 The figure shows a top view of the snap button portion with a raised clip of the sitting posture correction and vision protection device of this embodiment. Fig.17 Shown is a top view of the snap button portion with an elastic clamping edge groove of the sitting posture correction and vision protection device of this embodiment.

[0058] It should be noted that, as described in any one of the backpack solutions described in Examples 1 to 6, all the sub-snap buttons are arranged on the lower channel belt 1, the front channel belt 2 and the chest belt 3, and all the mother snap buttons are arranged on the bag body 5 and the auxiliary belt 41, and the lower channel belt 1, the front channel belt 2 and the chest belt 3 need to be alternately connected to the bag body 5 or the auxiliary belt 41 according to the students' needs for the backpack or the sitting posture correction and vision protection device. In this way, the elastic card edge grooves 10 on the bag body 5 or the auxiliary belt 41 are alternately matched with the raised card heads 9 on the lower channel belt 1, the front channel belt 2 and the chest belt 3 for disassembly, assembly and connection, which can reduce the elastic card edge grooves 10 and their elastic card edges 11 The wear of the snap button combination structure is increased, thereby increasing the service life of the backpack and the sitting posture correction and vision protection device. On the contrary, if the lower channel belt 1, the front channel belt 2 and the chest belt 3 are provided with elastic card edge grooves 10, and the bag body 5 or the auxiliary belt 41 is provided with raised card heads 9, then no matter the student is carrying a backpack or using the sitting posture correction and vision protection device, the elastic card edge grooves 10 on the lower channel belt 1, the front channel belt 2 and the chest belt 3 are disassembled and assembled and are continuously in a connected state, which increases the wear of the elastic card edge grooves 10 and their elastic card edges 11, resulting in a reduction in the service life of the backpack and the sitting posture correction and vision protection device.

[0059] In order to improve the comfort and breathability of the sitting posture correction and vision protection device of this embodiment, the shoulder strap 4 and the auxiliary strap 41 can be a belt body with air holes, such as a knitted mesh belt. In addition, the adjustment buckle 401 can be a Japanese-shaped structure, and the shoulder strap 4 passes through the upper and lower spaces of the Japanese-shaped structure in sequence to form a stretchable structure for adjusting the size.

[0060] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A backpack, comprising two rectangular lower channel straps (1), two rectangular front channel straps (2), a rectangular chest strap (3), two rectangular shoulder straps (4) and a bag-shaped bag body (5); characterized in that: Two lower channel bands (1) are evenly distributed on the left and right sides below the bag body (5); at least two lower sub-snap buttons (101) evenly distributed along the front-to-back direction are respectively arranged on the left and right sides of the front and rear ends of the two lower channel bands (1); lower female snap buttons (501) matching the lower sub-snap buttons (101) are respectively arranged on the front and rear ends of the bottom surface of the bag body (5); the two lower channel bands (1) are connected to the bottom surface of the bag body (5) through the lower sub-snap buttons (101) and the lower female snap buttons (501), respectively; the open gap between the lower channel bands (1) and the bottom surface of the bag body (5) along the front-to-back direction constitutes a lower channel (102); two front channel bands (2) are evenly distributed on the left and right sides in front of the bag body (5); At least two front sub-snap buttons (201) evenly distributed in the up-down direction are respectively arranged on the left and right sides of the front and rear ends of the two front channel belts (2); the upper and lower ends of the front side surface of the bag body (5) are respectively arranged with front female snap buttons (502) matching the front sub-snap buttons (201); the two front channel belts (2) are connected to the front side surface of the bag body through the front sub-snap buttons (201) and the front female snap buttons (502) respectively; the opening gap between the front channel belts (2) and the front side surface of the bag body (5) along the front-to-back direction constitutes the front channel (202); the two shoulder straps (4) respectively pass through the lower channel (102) and the front channel (202) on the left side, and the lower channel (102) and the front channel (202) on the right side, and the shoulder straps (4) are respectively connected to the front side surface of the bag body (5) through the front sub-snap buttons (201) and the front female snap buttons (502) respectively. One end and the other end are connected at the rear of the bag body (5) through an adjustment buckle (401); at least two neuter snap buttons (301) are arranged evenly distributed in the left and right directions at the upper and lower ends of the left and right sides of the chest strap (3); middle female snap buttons (402) matching the upper female snap buttons are arranged on the two shoulder straps (4) in the middle of the rear side of the bag body (5); the left and right sides of the chest strap (3) are connected to the two shoulder straps (4) through the neuter snap buttons (301) and the middle female snap buttons (402); the front of the shoulder straps (4) are respectively provided with a rectangular strip-shaped auxiliary belt (41); the auxiliary belts (41) are all located at the rear of the bag body (5); the upper ends of the auxiliary belts (41) are connected to the shoulder straps (4) above the chest strap (3); The lower end of the auxiliary strap (41) is connected to the shoulder strap (4) below the adjustment buckle (401); the left side of the lower end of the left auxiliary strap (41), the right side of the lower end of the right auxiliary strap (41), the left side of the lower end of the left shoulder strap (4) in front of the bag body (5), and the right side of the lower end of the right shoulder strap (4) in front of the bag body (5) are respectively provided with outer female snap buttons (403) matching the lower sub-snap button (101); the right side of the lower end of the left auxiliary strap (41), the left side of the right auxiliary strap (41), the right side of the lower end of the left shoulder strap (4) in front of the bag body (5), and the left side of the lower end of the right shoulder strap (4) in front of the bag body (5) are respectively provided with inner female snap buttons (404) matching the front sub-snap button (201); Upper ends of the auxiliary belts (41) are respectively provided with upper female snap buttons (405) matching the neutron snap buttons (301); The back comprises a sitting posture correction and vision protection device, which comprises a lower channel belt (1), a front channel belt (2), a chest belt (3), a shoulder belt (4) and an auxiliary belt (41); the lower sub-snap buttons (101) at both ends of each lower channel belt (1) along its length direction are respectively connected to the outer female snap buttons (403) of an auxiliary belt (41) and its adjacent shoulder belt (4); the front sub-snap buttons (201) at both ends of a front channel belt (2) along its length direction are respectively connected to the inner female snap buttons (404) on the two auxiliary belts (41); the front sub-snap buttons (201) at both ends of another front channel belt (2) along its length direction are respectively connected to the inner female snap buttons (404) of the two shoulder belts (4); the middle sub-snap buttons (301) at both ends of the chest belt (3) along its length direction are respectively connected to the upper female snap buttons (405) on the two auxiliary belts (41).

2. The backpack according to claim 1, characterized in that: A rectangular strip-shaped hand strap (6) is arranged in the middle of the top of the bag body (5), and two ends of the hand strap (6) are fixedly connected to the top of the bag body (5).

3. The backpack according to claim 1, characterized in that: Matching fixing snaps (7) are arranged on the inner side surfaces of the shoulder straps (4) at the front and bottom of the bag body (5) and on the outer side surfaces of the front and bottom of the bag body (5).

4. The backpack according to claim 1, characterized in that: The lower part of the front channel belt (2) is connected to the bag body (5) via a lower sealing snap button (203).

5. The backpack according to claim 4, characterized in that: Matching zippers (204) are provided on the left side, lower side and right side of the front channel belt (2) and on the front side of the bag body (5).

6. The backpack according to claim 4 or 5, characterized in that: A rectangular cover sheet (503) is arranged on the front side of the package body (5) and is located in front of the front channel belt (2). The upper side of the cover sheet (503) is connected to the package body (5) above the front channel belt (2).

7. The backpack according to claim 6, characterized in that The lower part of the cover sheet (503) is connected to the upper part of the front channel belt (2) via an upper sealing snap button (205).

8. The backpack according to claim 7, characterized in that: The lower part of the cover sheet (503) is folded upward and connected to the bag body (5) above the front channel belt (2) via a connecting snap button (206).

9. The backpack according to claim 8, characterized in that The lower sub-snap button (101), the front sub-snap button (201) and the middle sub-snap button (301) are all snap button parts with a protruding clamping head (9), and the outer female snap button (403), the inner female snap button (404), the upper female snap button (405), the lower female snap button (501), the front female snap button (502) and the middle female snap button (402) are all snap button parts with an elastic clamping edge groove (10).

Images