Strap adjusting mechanism and backpack
By designing a strap adjustment mechanism including fixed adjustment buckle, back strap, adjustment belt and disassembled adjustment buckle, the problem of cumbersome adjustment of effective length of strap in the prior art is solved, and the rapid and large-scale adjustment of effective length of strap is achieved, and adapted to Used by users of different heights.
Patent Information
- Application Number
- CN202421062644.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The effective length of the strap in the existing strap adjustment mechanism is cumbersome, which is not conducive to frequent adjustments every day, making it difficult for parents and school children to find the right strap length when using the backpack, which can easily cause spinal injury.
A strap adjustment mechanism is designed to achieve rapid adjustment of the effective length of the strap by combining the fixed adjustment buckle, the strap, the adjustment belt and the disassembly and assemble the adjustment buckle. The disassembly and assemble the adjustment buckle can be mounted or released, so that the effective length of the strap adjustment mechanism is in the first length state or the second length state.
The adjustment method of the effective length of the backpack in the strap adjustment mechanism is simplified, and the effective length of the backpack strap is quickly and extensively adjusted, adapting to users of different heights, and conveniently using the same backpack.
Smart Images
Figure CN222466316U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of backpacks, in particular to a strap adjustment mechanism and a backpack. Background Art
[0002] Schoolchildren are in the growth and development period, and their muscles are not strong enough. In addition, they often need to carry heavy schoolbags. Improper carrying / adjusting methods, incorrect standing and walking postures will lead to uneven tension of bilateral muscles, which can easily cause health problems. In order to prevent physical injuries to schoolchildren, parents will help their children carry their schoolbags during the pick-up and drop-off, and then let the children carry their schoolbags to the classroom at the school gate.
[0003] However, there is a big difference between the body shape of parents and students, so the effective length of the backpack straps needs to be adjusted to meet the needs of both parents and students. Otherwise, the length of the straps that parents can use is too long for students, and students will lean forward to maintain balance, causing damage to the spine. If you want to adjust the length of the straps every time you pick up and drop off your children, the current adjustment method of the straps is cumbersome; and it is not possible to adjust the length of the straps on both sides to the same length. Unequal lengths of the straps on both sides will cause unequal pressure on the shoulders, causing and aggravating health risks such as scoliosis. Utility Model Content
[0004] The utility model aims to provide a shoulder strap adjustment mechanism and a backpack, aiming to solve the problem that the adjustment method of the effective length of the shoulder strap in the existing shoulder strap adjustment mechanism is complicated and not conducive to frequent adjustment during daily use.
[0005] In a first aspect, the utility model provides a shoulder strap adjustment mechanism, which is applied to a backpack, the backpack comprising a backpack body, and the shoulder strap adjustment mechanism comprising:
[0006] Fixed adjustment buckle;
[0007] A shoulder strap, one end of which is connected to one side of the backpack body, and the other end of which is connected to the fixed adjustment buckle;
[0008] an adjustment strap, one end of which is buckled with the fixed adjustment buckle, and the other end of which is connected to a side of the backpack body away from the shoulder strap; and
[0009] The detachable adjustment buckle is buckled with the middle belt body of the adjustment belt to the detachable adjustment buckle. The detachable adjustment buckle can be hung and installed on one end of the shoulder strap close to the fixed adjustment buckle or released and removed, so that the effective length of the shoulder strap adjustment mechanism can be in the first length state or the second length state.
[0010] In one of the embodiments, a hanging hole is provided on the shoulder strap, the disassembly and adjustment buckle includes a buckle body and a hook structure connected to the buckle body, the middle strap body of the adjustment strap is buckled to the buckle body, and the hook structure is hung and installed on the hanging hole.
[0011] In one embodiment, a plurality of first adjustment holes are provided on the buckle body, and the adjustment belt is passed through each of the first adjustment holes.
[0012] In one of the embodiments, three first adjustment holes are provided on the buckle body, and the first adjustment holes are respectively set as the first buckle hole, the second buckle hole and the third buckle hole in sequence. One end of the adjustment belt is passed through the second buckle hole, the first buckle hole and the third buckle hole in sequence, and is buckled with the fixed adjustment buckle.
[0013] In one embodiment, each of the first adjustment holes includes an open button hole and / or a closed button hole.
[0014] In one embodiment, the hook structure includes an ear portion connected to the buckle body, and a barb portion connected to the ear portion, the ear portion is passed through the hanging hole, the barb portion is located outside the hanging hole, and is used to prevent the hook structure from detaching from the hanging hole.
[0015] In one embodiment, the fixed adjustment buckle is hung on the hanging hole, the fixed adjustment buckle is provided with a plurality of second adjustment holes, and one end of the adjustment belt is passed through each of the second adjustment holes.
[0016] In one embodiment, the shoulder strap is a double shoulder strap and includes a first shoulder strap and a second shoulder strap, the fixed adjustment buckle includes a first fixed fastener and a second fixed fastener, the upper part of the first shoulder strap and the upper part of the second shoulder strap are both connected to the upper side of the backpack body, the lower part of the first shoulder strap is connected to the first fixed fastener, and the lower part of the second shoulder strap is connected to the second fixed fastener;
[0017] The adjustment strap includes a first strap body and a second strap body, one end of the first strap body is connected to the lower side of the backpack body, and the other end of the first strap body is buckled with the first fixing fastener, one end of the second strap body is connected to the lower side of the backpack body, and the other end of the second strap body is buckled with the second fixing fastener.
[0018] In one of the embodiments, the disassembly and adjustment buckle includes a first disassembly and adjustment fastener and a second disassembly and adjustment fastener. The middle portion of the first strap body is buckled to the first disassembly and adjustment fastener, and the first disassembly and adjustment fastener can be hung and installed at the lower portion of the first shoulder strap or released and removed. The middle portion of the second strap body is buckled to the second disassembly and adjustment fastener, and the second disassembly and adjustment fastener can be hung and installed at the lower portion of the second shoulder strap or released and removed.
[0019] In a second aspect, the utility model further provides a backpack, comprising a backpack body and a shoulder strap adjustment mechanism as described in any of the above embodiments.
[0020] The following beneficial effects are achieved by using the embodiments of the present invention:
[0021] The utility model adopts a shoulder strap adjustment mechanism and a backpack, and the shoulder strap adjustment mechanism is applied to a backpack, wherein the middle belt body of the adjustment strap is buckled with the detachable adjustment buckle, and the detachable adjustment buckle can be hung and installed on one end of the shoulder strap close to the fixed adjustment buckle or released and removed, so that the effective length of the shoulder strap adjustment mechanism can be in a first length state or a second length state, thereby the effective length of the shoulder strap adjustment mechanism can be quickly adjusted by operating whether the detachable adjustment buckle is hung on the shoulder strap, and the effective length of the shoulder strap adjustment mechanism can be switched between the first length state and the second length state, thereby simplifying the adjustment method of the effective length of the shoulder strap in the shoulder strap adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0023] in:
[0024] Figure 1 Schematic diagram of a backpack in a first state in one embodiment.
[0025] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.
[0026] Figure 3 for Figure 1 Schematic diagram of the backpack in the second state.
[0027] Figure 4 for Figure 3 Enlarged schematic diagram of part B in the middle.
[0028] Figure 5 for Figure 1 A partial cutaway view of the backpack shown.
[0029] Figure 6 for Figure 3 A partial cutaway view of the backpack shown.
[0030] Figure 7 for Figure 1 Partial schematic diagram of the shoulder straps and fixed adjustment buckles in the backpack shown.
[0031] Figure 8 for Figure 1 Schematic diagram of disassembling and installing the adjustment buckle in the backpack shown.
[0032] Fig. 9 for Figure 1 A schematic diagram of the backpack's shoulder strap adjustment mechanism being in a second length state is shown.
[0033] Fig.10 for Figure 3 A schematic diagram of the backpack's shoulder strap adjustment mechanism in a first length state is shown.
[0034] Fig.11 for Figure 1 Schematic diagram of the backpack with the strap adjustment mechanism in the adjustment state.
[0035] Figure numbers: 10, backpack body; 20, shoulder strap adjustment mechanism; 100, fixed adjustment buckle; 110, first fixed fastener; 120, second fixed fastener; 101, second adjustment hole; 200, shoulder strap; 210, first shoulder strap; 220, second shoulder strap; 201, hanging hole; 300, adjustment strap; 310, first strap body; 320, second strap body; 400, detachable adjustment buckle; 410, first detachable fastener; 420, second detachable fastener; 411, buckle body; 412, hook structure; 4121, ear hook; 4122, hook part; 413, first adjustment hole; 4131, first buttonhole; 4132, second buttonhole; 4133, third buttonhole. DETAILED DESCRIPTION
[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0037] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0038] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their 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 at least one of the said features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0039] The utility model embodiment discloses a backpack, please refer to Figures 1 to 6 The backpack includes a backpack body 10 and a shoulder strap adjustment mechanism 20. The backpack body 10 is a part for loading articles. The shoulder strap adjustment mechanism 20 includes a fixed adjustment buckle 100, a shoulder strap 200, an adjustment belt 300 and a detachable adjustment buckle 400. One end of the shoulder strap 200 is connected to one side of the backpack body 10, and the other end of the shoulder strap 200 is connected to the fixed adjustment buckle 100. One end of the adjustment belt 300 is buckled with the fixed adjustment buckle 100, and the other end of the adjustment belt 300 is connected to a side of the backpack body 10 away from the shoulder strap 200. The middle belt body of the adjustment belt 300 is buckled with the detachable adjustment buckle 400. The detachable adjustment buckle 400 can be hung and installed on one end of the shoulder strap 200 close to the fixed adjustment buckle 100 or released and removed, so that the effective length of the shoulder strap adjustment mechanism 20 can be in a first length state or a second length state.
[0040] It can be understood that the length dimensions of the first length state and the second length state are different, and the length dimension of the first length state is smaller than the length dimension of the second length state. Therefore, by operating the disassembly and assembly adjustment buckle 400 to determine whether it is hung on the strap 200, the effective length of the strap adjustment mechanism 20 can be quickly adjusted, and the effective length of the strap adjustment mechanism 20 can be switched between the first length state and the second length state, thereby simplifying the adjustment method of the effective length of the strap 200 in the strap adjustment mechanism 20.
[0041] In this embodiment, the effective length of the strap adjustment mechanism 20 is the effective length of the backpack strap 200. The effective length of the backpack strap 200 is the total length of the strap 200 components that bear the weight of the backpack body 10. Here, the effective length of the strap adjustment mechanism 20 is the sum of the effective lengths of the fixed adjustment buckle 100, the strap 200, the adjustment belt 300 and the detachable adjustment buckle 400.
[0042] For details, please refer to Figure 3 , Figure 4 and Figure 6 When the strap adjustment mechanism 20 is in a first length state, the effective length of the strap adjustment mechanism 20 is the sum of the length of the strap 200, the effective length of the detachable adjustment buckle 400, and the length of the adjustment belt 300 connected to the backpack body 10 to the detachable adjustment buckle 400; when the strap adjustment mechanism 20 is in a second length state, the effective length of the strap adjustment mechanism 20 is the sum of the length of the strap 200, the effective length of the fixed adjustment buckle 100, the length of the adjustment belt 300 connected to the fixed adjustment buckle 100 to the detachable adjustment buckle 400, the effective length of the detachable adjustment buckle 400, and the length of the adjustment belt 300 connected to the backpack body 10 to the detachable adjustment buckle 400.
[0043] See also Figure 1 , Figure 2 and Figure 5 When the shoulder strap adjustment mechanism 20 is in the second length state, the portion of the adjustment belt 300 between the fixed adjustment buckle 100 and the detachable adjustment buckle 400 is in an untensioned suspended state and does not bear the gravity of the backpack body. At this time, the effective length of the adjustment belt 300 is shorter, so the effective length of the backpack shoulder strap 200 is also shorter, which is suitable for users with shorter height. When the shoulder strap adjustment mechanism 20 is in the second length state, the effective length of the adjustment belt 300 is longer, so the effective length of the backpack shoulder strap 200 is also longer, which is suitable for users with taller height.
[0044] The strap adjustment mechanism 20 of this embodiment can achieve rapid and wide-range adjustment of the effective length of the backpack straps 200, so that users of different heights can conveniently use the same backpack. The overall structure is simple and light, and the use and adjustment are quick.
[0045] In one embodiment, please refer to Figure 7 and Figure 8 A hanging hole 201 is provided on the shoulder strap 200, and the disassembly and assembly adjustment buckle 400 includes a buckle body 411 and a hook structure 412 connected to the buckle body 411. The middle belt body of the adjustment belt 300 is buckled to the buckle body 411, and the hook structure 412 is hung and installed on the hanging hole 201. Through the detachable connection between the hook structure 412 and the hanging hole 201, the effective length of the shoulder strap adjustment mechanism 20 can be quickly adjusted.
[0046] Furthermore, the hook structure 412 includes an ear portion 4121 connected to the buckle body 411, and a barb portion 4122 connected to the ear portion 4121. The ear portion 4121 is passed through the hanging hole 201, and the barb portion 4122 is located outside the hanging hole 201 and is used to prevent the hook structure 412 from detaching from the hanging hole 201, thereby avoiding the hook structure 412 from sliding out of the hanging hole 201, thereby ensuring the stability and reliability of the hook structure 412 being hung on the hanging hole 201.
[0047] In this embodiment, the middle strap body of the adjustment strap 300 is buckled to the buckle body 411, so that the length of the adjustment strap 300 from the connection to the backpack body 10 to the disassembly and assembly of the adjustment buckle 400 can be adjusted, thereby changing the length dimension of the first length state and the length dimension of the second length state.
[0048] Furthermore, the buckle body 411 is provided with a plurality of first adjustment holes 413, and the adjustment belt 300 is passed through each of the first adjustment holes 413, so that the adjustment belt 300 is buckled to the buckle body 411 by passing the adjustment belt 300 through each of the first adjustment holes 413. Furthermore, the buckle body 411 is provided with three first adjustment holes 413, and each of the first adjustment holes 413 is sequentially set as a first buckle hole 4131, a second buckle hole 4132, and a third buckle hole 4133, and one end of the adjustment belt 300 is sequentially passed through the second buckle hole 4132, the first buckle hole 4131, and the third buckle hole 4133, and is buckled with the fixed adjustment buckle 100, so that the adjustment belt 300 is buckled to the buckle body 411.
[0049] Specifically, each first adjustment hole 413 includes an open button hole and / or a closed button hole. The flexible setting of each first adjustment hole 413 facilitates the buckling setting of the adjustment belt 300 on the buckle body 411. It can be understood that the adjustment belt 300 is wound on the disassembly adjustment buckle, and the disassembly adjustment buckle can be wound on the fixed adjustment buckle 100 and any position between the adjustment belt 300 and the backpack body 10. Therefore, by adjusting the position of the disassembly adjustment buckle on the adjustment belt 300, the length of the adjustment belt 300 between the fixed adjustment buckle 100 and the disassembly adjustment buckle can be changed, thereby changing the effective length of the adjustment belt 300, and then changing the effective length of the backpack strap 200, so as to achieve a wide range of stepless adjustment to meet the needs of users of different heights.
[0050] In this embodiment, each adjustment strap 300 is provided with a detachable adjustment buckle 400, so that two effective lengths can be quickly configured through the strap adjustment mechanism 20. Of course, in other embodiments, each adjustment strap 300 can also be provided with two or more detachable adjustment buckles 400, so that three or more effective lengths can be quickly configured through the strap adjustment mechanism 20.
[0051] In one embodiment, the fixed adjustment buckle 100 is hung on the hanging hole 201, and the fixed adjustment buckle 100 is provided with a plurality of second adjustment holes 101. One end of the adjustment belt 300 is passed through each second adjustment hole 101, so that one end of the adjustment belt 300 is buckled to the fixed adjustment buckle 100, and then the length of the adjustment belt 300 connected to the fixed adjustment buckle 100 to the disassembly adjustment buckle 400 can be adjusted, thereby changing the length dimension of the first length state and the length dimension of the second length state.
[0052] In this example, see Fig. 9 When the shoulder strap adjustment mechanism 20 is in the second length state, the adjustment belt 300 between the fixed adjustment buckle 100 and the detachable adjustment buckle 400 is unfolded, the effective length of the adjustment belt 300 is longer, the two ends of the adjustment belt 300 are tightened, the two sides are in close contact and the static friction is large, and the detachable adjustment buckle 400 is not easy to shift. At this time, the adjustment belt 300 passes through each first adjustment hole 413 of the detachable adjustment buckle 400. Under the action of two forces F in opposite directions, the two sides of the adjustment belt 300 are pulled apart, the position of the detachable adjustment buckle 400 is not easy to loosen, and the hook structure 412 is pressed tightly against the adjustment belt 300, which is not easy to hook other objects.
[0053] See also Fig.10 When the shoulder strap adjustment mechanism 20 is in the first length state, the adjustment belt 300 between the fixed adjustment buckle 100 and the detachable adjustment buckle 400 is retracted, and the effective length of the adjustment belt 300 is shorter. The adjustment belt 300 passes through the first adjustment hole 413 of the detachable adjustment buckle 400 in the reverse direction, and does not interfere with the action of the hook structure 412 of the detachable adjustment buckle 400 inserting into the hanging hole 201. The lower end of the adjustment belt 300 is tightened, the two sides are in close contact and the static friction is large, and the detachable adjustment buckle 400 is not easy to shift.
[0054] See also Fig.11 The adjusting belt 300 passes through the independent first adjusting hole 413. When relaxed, it does not stick to other surfaces of the adjusting belt 300 and is not easily affected by static friction. It is easy to loosen to adjust the position of the disassembly and assembly adjusting buckle 400 on the adjusting belt 300. By adjusting the position of the disassembly and assembly adjusting buckle 400 on the adjusting belt, the effective length of the adjusting belt 300 can be changed.
[0055] In one embodiment, see Figures 1 to 6The shoulder strap 200 is a double-shoulder shoulder strap 200, and includes a first shoulder strap 210 and a second shoulder strap 220. The fixed adjustment buckle 100 includes a first fixing fastener 110 and a second fixing fastener 120. The upper part of the first shoulder strap 210 and the upper part of the second shoulder strap 220 are both connected to the upper side of the backpack body, the lower part of the first shoulder strap 210 is connected to the first fixing fastener 110, and the lower part of the second shoulder strap 220 is connected to the second fixing fastener 120; the adjustment belt 300 includes a first belt body 310 and a second belt body 320. One end of the first belt body 310 is connected to the lower side of the backpack body 10, and the other end of the first belt body 310 is buckled with the first fixing fastener 110, one end of the second belt body 320 is connected to the lower side of the backpack body 10, and the other end of the second belt body 320 is buckled with the second fixing fastener 120, so that the backpack adjustment mechanism of this embodiment is applied to a double-shoulder backpack.
[0056] Furthermore, the disassembly and adjustment buckle 400 includes a first disassembly and assembly fastener 410 and a second disassembly and assembly fastener 420. The middle portion of the first strap body 310 is fastened to the first disassembly and assembly fastener 410, and the first disassembly and assembly fastener 410 can be hung and installed at the lower portion of the first shoulder strap 210 or released and removed. The middle portion of the second strap body 320 is fastened to the second disassembly and assembly fastener 420, and the second disassembly and assembly fastener 420 can be hung and installed at the lower portion of the second shoulder strap 220 or released and removed, thereby enabling the effective length of the shoulder strap adjustment mechanism 20 to be quickly adjusted through the first disassembly and assembly fastener 410 and the second disassembly and assembly fastener 420, and the effective length of the shoulder strap adjustment mechanism 20 can be switched between the first length state and the second length state.
[0057] In this embodiment, the first shoulder strap 210 refers to the shoulder strap on the left side of the drawing, and the second shoulder strap 220 refers to the shoulder strap on the right side of the drawing. After the user actually wears the backpack, the first shoulder strap 210 is carried on the user's right shoulder, and the second shoulder strap 220 is carried on the user's left shoulder. That is, the directional indications "left" and "right" in this embodiment are the "left" and "right" in the drawing, which are opposite to the directional indications of "left" and "right" after the user actually wears the backpack.
[0058] Therefore, referring to the drawings, when the shoulder strap adjustment mechanism 20 is applied to a backpack, it will have an effective length of the left shoulder strap and an effective length of the right shoulder strap.
[0059] When the effective length of the left shoulder strap is in the first length state, the effective length of the left shoulder strap is the sum of the length of the first shoulder strap 210, the effective length of the first detachable fastener 410, and the length from the first strap body 310 connected to the backpack body 10 to the first detachable fastener 410; when the effective length of the left shoulder strap is in the second length state, the effective length of the left shoulder strap is the sum of the length of the first shoulder strap 210, the effective length of the first fixed fastener 110, the length from the first strap body 310 connected to the first fixed fastener 110 to the first detachable fastener 410, the effective length of the first detachable fastener 410, and the length from the first strap body 310 connected to the backpack body 10 to the first detachable fastener 410.
[0060] When the effective length of the right shoulder strap is in the first length state, the effective length of the right shoulder strap is the sum of the length of the second shoulder strap 220, the effective length of the second disassembly fastener 420, and the length from the second strap body 320 connected to the backpack body 10 to the second disassembly fastener 420; when the effective length of the right shoulder strap is in the second length state, the effective length of the right shoulder strap is the sum of the length of the second shoulder strap 220, the effective length of the second fixing fastener 120, the length from the second strap body 320 connected to the second fixing fastener 120 to the second disassembly fastener 420, the effective length of the second disassembly fastener 420, and the length from the second strap body 320 connected to the backpack body 10 to the second disassembly fastener 420.
[0061] Through the above-mentioned arrangement, it is possible to adjust the buckling position of the first strap body 310 relative to the first detachable fastener 410 and the buckling position of the second strap body 320 relative to the second detachable fastener 420 when in the first length state, so that the effective length of the left shoulder strap is the same as the effective length of the right shoulder strap; when in the second length state, adjust the buckling position of the first strap body 310 relative to the first fixed fastener 110, adjust the buckling position of the second strap body 320 relative to the second fixed fastener 120, adjust the buckling position of the first strap body 310 relative to the first detachable fastener 410, and adjust the buckling position of the second strap body 320 relative to the second detachable fastener 420, so that the effective length of the left shoulder strap is the same as the effective length of the right shoulder strap, thereby facilitating the effective length of the shoulder straps 200 on both sides to be equal, thereby ensuring equal pressure on both shoulders, and facilitating the prevention of postural spinal curvature abnormalities.
[0062] Of course, in other embodiments, the backpack may also be a shoulder bag or a shoulder bag. When the backpack adjustment mechanism is applied to the shoulder bag or the shoulder bag, one or more disassembly and assembly adjustment buckles 400 may be provided.
[0063] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. A shoulder strap adjustment mechanism, applied to a backpack, the backpack comprising a backpack body, characterized in that: The strap adjustment mechanism comprises: Fixed adjustment buckle; A shoulder strap, one end of which is connected to one side of the backpack body, and the other end of which is connected to the fixed adjustment buckle; an adjustment strap, one end of which is buckled with the fixed adjustment buckle, and the other end of which is connected to a side of the backpack body away from the shoulder strap; and The detachable adjustment buckle is buckled with the middle belt body of the adjustment belt to the detachable adjustment buckle. The detachable adjustment buckle can be hung and installed on one end of the shoulder strap close to the fixed adjustment buckle or released and removed, so that the effective length of the shoulder strap adjustment mechanism can be in the first length state or the second length state.
2. The strap adjustment mechanism according to claim 1, characterized in that: The shoulder strap is provided with a hanging hole, the disassembly and adjustment buckle comprises a buckle body and a hook structure connected to the buckle body, the middle belt body of the adjustment belt is buckled to the buckle body, and the hook structure is hung and installed in the hanging hole.
3. The strap adjustment mechanism according to claim 2, characterized in that: The buckle body is provided with a plurality of first adjustment holes, and the adjustment belt is passed through each of the first adjustment holes.
4. The strap adjustment mechanism according to claim 3, characterized in that: The buckle body is provided with three first adjustment holes, and the first adjustment holes are respectively set as the first buckle hole, the second buckle hole and the third buckle hole in sequence. One end of the adjustment belt is passed through the second buckle hole, the first buckle hole and the third buckle hole in sequence, and is buckled with the fixed adjustment buckle.
5. The strap adjustment mechanism according to claim 3, characterized in that: Each of the first adjustment holes includes an open button hole and / or a closed button hole.
6. The strap adjustment mechanism according to claim 2, characterized in that: The hook structure includes an ear portion connected to the buckle body and a barb portion connected to the ear portion, the ear portion is inserted into the hanging hole, the barb portion is located outside the hanging hole and is used to prevent the hook structure from detaching from the hanging hole.
7. The strap adjustment mechanism according to claim 2, characterized in that: The fixed adjustment buckle is hung on the hanging hole, and the fixed adjustment buckle is provided with a plurality of second adjustment holes, and one end of the adjustment belt is passed through each of the second adjustment holes.
8. The strap adjustment mechanism according to claim 1, characterized in that: The shoulder strap is a double shoulder strap and includes a first shoulder strap and a second shoulder strap, the fixed adjustment buckle includes a first fixed fastener and a second fixed fastener, the upper part of the first shoulder strap and the upper part of the second shoulder strap are both connected to the upper side of the backpack body, the lower part of the first shoulder strap is connected to the first fixed fastener, and the lower part of the second shoulder strap is connected to the second fixed fastener; The adjustment strap includes a first strap body and a second strap body, one end of the first strap body is connected to the lower side of the backpack body, and the other end of the first strap body is buckled with the first fixing fastener, one end of the second strap body is connected to the lower side of the backpack body, and the other end of the second strap body is buckled with the second fixing fastener.
9. The strap adjustment mechanism according to claim 8, characterized in that: The disassembly and adjustment buckle includes a first disassembly and adjustment fastener, the middle belt body of the first belt body is buckled to the first disassembly and adjustment fastener, the first disassembly and adjustment fastener can be hung and installed at the lower part of the first shoulder strap or released and removed, the middle belt body of the second belt body is buckled to the second disassembly and adjustment fastener, and the second disassembly and adjustment fastener can be hung and installed at the lower part of the second shoulder strap or released and removed.
10. A backpack, comprising a backpack body and a shoulder strap adjustment mechanism according to any one of claims 1 to 9.