Strap buffering structure and backpack
By using a design where movable and fixed magnets with the same polarity in the backpack straps, combined with elastic elements, the problem of pressure cushioning on the shoulders during exercise is solved, achieving a good pressure cushioning effect and reducing the risk of shoulder injury.
Patent Information
- Application Number
- CN202421237230.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-05-31
AI Technical Summary
Existing backpack cushioning devices cannot effectively cushion the pressure on the shoulders during exercise, resulting in excessive stress on the shoulders, which can easily lead to injury and affect the user's stability.
The design employs a combination of movable and fixed magnets with the same polarity, along with elastic components. Through the dual action of magnetic force and elasticity, the movement speed of the movable magnets is reduced, achieving smooth movement and cushioning the pulling force when the backpack shakes.
It effectively reduces the stress on the shoulder, lowers the risk of shoulder injury, and improves the user's stability and comfort.
Smart Images
Figure CN223754523U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of backpacks, and particularly relates to a shoulder strap buffer structure and a backpack. BACKGROUND
[0002] The backpack directly exerts force on the shoulder through the shoulder strap, so the shoulder basically bears most of the weight of the backpack. When the user is walking, the backpack inevitably moves up and down due to inertia, especially when the user jumps, the backpack moves greatly and exerts force downward on the shoulder, which causes the shoulder to be injured due to excessive force; then, when the backpack jumps upward and basically no longer exerts force on the shoulder, the user's center of gravity changes suddenly, which easily causes the user to fall down due to unstable center of gravity.
[0003] In order to reduce the force intensity on the shoulder, the existing backpack generally sets a sponge layer or similar buffer device on the inner side of the shoulder strap and corresponding to the position of the shoulder, however, the buffer effect of this type of buffer device is very limited and cannot produce good pressure buffering for the large amplitude motion of the backpack. CONTENT OF THE UTILITY MODEL
[0004] The main purpose of the present application is to provide a shoulder strap buffer structure and a backpack, which aims to produce good pressure buffering on the shoulder.
[0005] To achieve the above purpose, the present application provides a shoulder strap buffer structure, which comprises:
[0006] An outer shell is formed with a receiving cavity, and the outer shell is provided with a fixed seat;
[0007] A movable seat is movably connected with the outer shell to be able to approach or move away from the fixed seat;
[0008] An elastic member is arranged in the receiving cavity and located between the movable seat and the fixed seat;
[0009] A fixed magnet is fixed with the fixed seat; and
[0010] A movable magnet is fixed with the movable seat, the polarity of the end of the movable magnet and the fixed magnet facing each other is the same, and the elastic member is squeezed when the movable magnet moves close to the fixed magnet.
[0011] Optionally, the outer shell comprises a first shell and a second shell, the first shell and the second shell jointly form the receiving cavity; the movable seat has a mounting cavity, and the movable magnet is embedded in the mounting cavity.
[0012] Optionally, an inner wall of the first shell is provided with a first connecting portion, and an inner wall of the second shell is provided with a second connecting portion, and the first connecting portion and the second connecting portion are both provided with connecting holes for a fastener to pass through to fix the first shell and the second shell;
[0013] The movable seat is provided with an avoiding groove, and when the movable seat moves to a limit position away from the fixed magnet, the first connecting portion and the second connecting portion can be fitted with and abut against the avoiding groove.
[0014] Optionally, the movable seat comprises a box body and a top cover, the box body is formed with the mounting cavity, and the top cover covers the mounting cavity.
[0015] A side of the top cover away from the box body is concave-convex to have two convex portions and one concave portion, the concave portion constitutes the avoiding groove, and the convex portions are provided with mounting holes for another fastener to pass through to be fixed with the box body.
[0016] Optionally, the back-carrying cushioning structure further comprises a guide column fixed with the outer shell, and the movable seat is provided with a guide hole movably matched with the guide column, and the movable seat can slide along the guide column to be close to or away from the fixed magnet.
[0017] Optionally, the movable seat has a first surface and a second surface away from each other, and the first surface and the second surface are surfaces extending along a length direction of the guide column.
[0018] The first surface is provided with a first protrusion in contact with an inner wall of the outer shell to make the first surface spaced apart from the inner wall of the outer shell; and / or,
[0019] The second surface is provided with a second protrusion in contact with the inner wall of the outer shell to make the second surface spaced apart from the inner wall of the outer shell.
[0020] Optionally, the guide column comprises a main body segment, a first limiting head and a second limiting head, the first limiting head and the second limiting head are arranged at two ends of the main body segment, and a diameter of the first limiting head and a diameter of the second limiting head are respectively greater than or smaller than a diameter of the main body segment.
[0021] The outer shell comprises a first shell and a second shell, and the first shell and the second shell jointly form a first limiting cavity and a second limiting cavity, the first limiting head is embedded in the first limiting cavity, and the second limiting head is embedded in the second limiting cavity.
[0022] Optionally, the strap cushioning structure includes two guide posts, and the elastic element consists of two springs respectively sleeved on the two guide posts, with the fixed magnet and the movable magnet located between the two guide posts.
[0023] Optionally, the outer casing has a through hole on the side near the fixed seat, and the movable seat has a fixing hole. The through hole and the fixing hole are used for the strap to be threaded through.
[0024] This application also proposes a backpack, including: a bag body, shoulder straps, and a shoulder strap cushioning structure; the shoulder straps include a first section and a second section, one end of the first section is connected to the bag body, the other end of the first section is fixed to the movable seat, one end of the second section is connected to the bag body, and the other end of the second section is fixed to the outer shell.
[0025] In the technical solution of this application embodiment, when the movable magnet and the movable seat are pulled towards the fixed magnet, the movable magnet moves closer to the fixed magnet along with the movable seat. Simultaneously, the elastic element is compressed, exerting an opposite force on the movable magnet, reducing its speed and making its movement more stable. As the movable magnet moves towards the fixed magnet, the magnetic force between them comes into play. Because their polarities are the same at opposite ends, they repel each other, further reducing the movable magnet's speed. After this double deceleration by the elastic element and the fixed magnet, the movable magnet's movement becomes even smoother. When the shoulder strap cushioning structure is connected between the two shoulder straps of the backpack, the fixed magnet is fixed relative to one strap, and the movable seat is fixed to the other strap. When the backpack is shaken, the shoulder straps are pulled. At this time, the shoulder strap cushioning structure comes into play, mitigating the pull and providing good pressure cushioning for the shoulders, reducing the risk of shoulder injury. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the backpack structure in an embodiment of this application;
[0028] Figure 2 for Figure 1 Assembly diagram of the middle back strap cushioning structure;
[0029] Figure 3 for Figure 2 Cross-sectional schematic diagram of the mid-back strap cushioning structure;
[0030] Figure 4 For Figure 2 Internal structure diagram of the middle back belt buffer structure;
[0031] Figure 5 For Figure 4 Structure diagram of the middle back belt buffer structure after hiding the shell;
[0032] Figure 6 For Figure 5 Exploded diagram of the middle movable seat and movable magnet;
[0033] Figure 7 For Figure 2 Structure diagram of the first shell;
[0034] Figure 8 For Figure 2 Structure diagram of the second shell.
[0035] BRIEF DESCRIPTION OF THE DRAWINGS
[0036] Reference Name Reference Name Reference Name 100 Strap buffer structure 17 Via hole 641 Convex part 10 Shell 20 Elastic piece 642 Mounting hole 11 First shell 30 Fixed magnet 65 Box body 111 First connecting part 40 Movable magnet 66 First surface 112 Connecting hole 50 Guide column 661 First protrusion 12 Second shell 51 Main body section 67 Second surface 121 Second connecting part 52 First limiting head 671 Second protrusion 122 Connecting hole 53 Second limiting head 68 Fixed hole 13 Accommodation cavity 60 Movable seat 70 Backpack 14 First limiting cavity 61 Mounting cavity 71 Pack body 15 Second limiting cavity 62 Guide hole 72 Strap 16 Fixed seat 63 Avoidance groove 721 First section 161 Fixed groove 64 Top cover 722 Second section DETAILED DESCRIPTION
[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.
[0038] It should be noted that, in the description of the present application, if the terms "first", "second", etc. appear, "first", "second" are only used for convenient description of different components or names, and cannot be understood as indicating or implying the order relationship, relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, if "and / or" appears throughout the text, it means that it includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes are satisfied at the same time.
[0039] Please refer to Figure 2 and Figure 3The application provides a harness buffering structure 100, which comprises a shell 10, an elastic piece 20, a fixed magnet 30 and a movable magnet 40. The shell 10 is provided with a receiving cavity 13, and the shell 10 is provided with a fixed seat 16, and the fixed magnet 30 is fixed to the fixed seat 16. The elastic piece 20 and the movable magnet 40 are arranged in the receiving cavity 13, and the movable magnet 40 can move relative to the shell 10 to approach or move away from the fixed magnet 30. The polarity of the end of the movable magnet 40, which is close to the fixed magnet 30, is the same as the polarity of the end of the fixed magnet 30, which is close to the movable magnet 40, and the elastic piece 20 is pressed when the movable magnet 40 moves close to the fixed magnet 30.
[0040] The polarity of the end of the movable magnet 40, which is close to the fixed magnet 30, is the same as the polarity of the end of the fixed magnet 30, which is close to the movable magnet 40, and the elastic piece 20 is pressed when the movable magnet 40 moves close to the fixed magnet 30.
[0041] In the application, when the movable magnet 40 is pulled in the direction of the fixed magnet 30, the movable magnet 40 moves in the direction of the fixed magnet 30, and the elastic piece 20 is pressed, the elastic piece 20 provides an opposite force to the movable magnet 40, reduces the moving speed of the movable magnet 40, and makes the movable magnet 40 move stably. When the movable magnet 40 moves to the fixed magnet 30, the magnetic force generated between the movable magnet 40 and the fixed magnet 30 plays a role, and because the polarity of the end of the movable magnet 40, which is close to the fixed magnet 30, is the same as the polarity of the end of the fixed magnet 30, which is close to the movable magnet 40, the movable magnet 40 is subjected to a repulsive force, and the moving speed of the movable magnet 40 is reduced again. After the double speed reduction of the elastic piece 20 and the fixed magnet 30, the movement of the movable magnet 40 is more stable. As shown in the figure, when the harness buffering structure 100 is connected between two sections of the harness 72 of the backpack 70, the fixed magnet 30 is fixed relative to one section of the harness 72, and the movable magnet 40 is fixed to the other section of the harness 72. When the backpack 70 is shaken, the harness 72 is pulled, at this time, the harness buffering structure 100 plays a role, can alleviate the pulling of the harness 72, and thus can generate good pressure buffering on the shoulder, and reduces the risk of shoulder injury. Figure 1
[0042] Please refer to Figure 4 to Figure 6 Further, the harness buffering structure 100 further comprises a movable seat 60, and the movable magnet 40 is arranged in the movable seat 60. In some embodiments, the movable seat 60 is provided with a mounting cavity 61, and the movable magnet 40 is arranged in the mounting cavity 61. Of course, in other embodiments, the movable magnet 40 can be directly bonded to the surface of the movable seat 60. By arranging the movable magnet 40 in the movable seat 60 and connecting the movable seat 60 with other structures, the movable magnet 40 itself can be avoided to be punched or processed in other ways. Meanwhile, the movable seat 60 protects the movable magnet 40, and prevents the movable magnet 40 from being affected by collision during movement and affecting the magnetic force.
[0043] Further, the back support structure 100 further comprises a guide post 50 fixed to the shell 10, and the movable seat 60 is provided with a guide hole 62 movably connected with the guide post 50, and the movable seat 60 is capable of sliding along the guide post 50 to approach or move away from the fixed magnet 30. By means of the cooperation of the guide post 50 and the guide hole 62, the movable magnet 40 can be better guided to move towards the direction of approaching or moving away from the fixed magnet 30.
[0044] In some embodiments, two guide posts 50 are arranged in the shell 10, and the two guide posts 50 are distributed on two opposite sides of the movable seat 60, and the two opposite sides of the movable seat 60 are movably connected with the two guide posts 50 respectively, and the distribution direction of the two guide posts 50 intersects with the movement direction of the movable seat 60, for example, perpendicular to the movement direction of the movable seat 60. The arrangement of the two guide posts 50 can improve the stability of the movement of the movable seat 60.
[0045] The mounting cavity 61 of the movable seat 60 can specifically refer to a closed space, and the movable magnet 40 is completely accommodated into the mounting cavity 61. Specifically, the movable seat 60 comprises a box body 65 and a top cover 64, the box body 65 is formed with the mounting cavity 61, and the mounting cavity 61 is arranged in an open manner, and the top cover 64 covers the opening of the mounting cavity 61.
[0046] Alternatively, the mounting cavity 61 of the movable seat 60 is a non-closed space, for example, the movable seat 60 is provided with a plurality of limiting protrusions, and the space formed by the plurality of limiting protrusions distributed along the same circumference and spaced apart in sequence is the mounting cavity 61.
[0047] Please refer to Figure 7 and Figure 8 In some embodiments, the shell 10 comprises a first shell 11 and a second shell 12, and the first shell 11 and the second shell 12 jointly form the receiving cavity 13. The inner wall of the first shell 11 is provided with a first connecting portion 111, and the inner wall of the second shell 12 is provided with a second connecting portion 121, and the first connecting portion 111 and the second connecting portion 121 are both provided with a connecting hole 112 / 122 for a fastener to pass through to fix the first shell 11 and the second shell 12. The first connecting portion 111 and the second connecting portion 121 can respectively play a role of structural reinforcement, and the structural strength of the shell 10 can still be ensured after the connecting hole 112 / 122 is arranged. After the fastener such as a screw or a bolt is inserted into the first connecting portion 111 and the second connecting portion 121, the first shell 11 and the second shell 12 are fixed together. Alternatively, the first connecting portion 111 and the second connecting portion 121 are semicircular.
[0048] Please refer to Figure 5 and Figure 6Further, the movable seat 60 is provided with an avoiding groove 63, when the movable seat 60 moves to the limit position away from the fixed magnet 30, the first connecting part 111 and the second connecting part 121 can be fitted with and abut against the avoiding groove 63, so as to limit the movable seat 60 to continue to move away from the fixed magnet 30. The first connecting part 111 and the second connecting part 121 can be fitted with the avoiding groove 63 means that the first connecting part 111 and the second connecting part 121 can be accommodated into the avoiding groove 63, and the shape of the first connecting part 111 and the second connecting part 121 is similar to the shape of the avoiding groove 63, so that the first connecting part 111 and the second connecting part 121 are respectively fitted with the avoiding groove 63.
[0049] In some embodiments, the side of the top cover 64 away from the box body 65 is concave-convex to have two convex parts 641 and one concave part, the concave part constitutes the avoiding groove 63, and the convex part 641 is provided with a mounting hole 642 for the fastener to pass through and be fixed with the box body 65. In this way, the thickness of the convex part 641 is large, and after the mounting hole 642 is opened, the top cover 64 can still have large strength.
[0050] In some embodiments, the movable seat 60 has a first surface 66 and a second surface 67 away from each other, and the first surface 66 and the second surface 67 are surfaces extending along the length direction of the guide column 50. The first surface 66 is provided with a first protrusion 661, and the first protrusion 661 is in contact with the inner wall of the shell 10 so that the first surface 66 is spaced apart from the inner wall of the shell 10.
[0051] In some embodiments, the second surface 67 is provided with a second protrusion 671, and the second protrusion 671 is in contact with the inner wall of the shell 10 so that the second surface 67 is spaced apart from the inner wall of the shell 10.
[0052] In the above, the first protrusion 661 and the second protrusion 671 can reduce the contact area of the movable seat 60 and the shell 10, reduce the movement resistance of the movable seat 60, and also can take into account the small area contact of the movable seat 60 and the shell 10 to avoid the movable seat 60 from shaking during movement.
[0053] In some embodiments, the first protrusion 661 is a long strip protrusion extending along the length direction of the guide column 50. The side of the second protrusion 671 facing the inner wall of the shell 10 is an arc surface, two adjacent side surfaces of the shell 10 are connected through a rounded arc transition, and the arc surface is provided corresponding to the rounded arc.
[0054] In some embodiments, the guide column 50 comprises a main body section 51 arranged along a length direction, a first limiting head 52 and a second limiting head 53, the first limiting head 52 and the second limiting head 53 are respectively arranged at two ends of the main body section 51, the diameter of the first limiting head 52 is greater than or smaller than the diameter of the main body section 51, and the diameter of the second limiting head 53 is greater than or smaller than the diameter of the main body section 51. The first shell 11 and the second shell 12 jointly form a first limiting cavity 14 and a second limiting cavity 15, the first limiting head 52 is embedded in the first limiting cavity 14, and the second limiting head 53 is embedded in the second limiting cavity 15. Therefore, the cavity wall of the first limiting cavity 14 can limit the first limiting head 52, and the cavity wall of the second limiting cavity 15 can limit the second limiting head 53, so as to avoid the movement of the guide column 50 along the length direction and the radial direction. In the embodiment, the first limiting head 52 and the second limiting head 53 can be annular grooves on the main body section 51, or the first limiting head 52 and the second limiting head 53 are protrusions on the main body section 51, that is, similar to shaft shoulders. The shapes of the first limiting head 52 and the second limiting head 53 can be the same or different.
[0055] In some embodiments, the back strap buffer structure 100 comprises two guide columns 50, the elastic member 20 is two and is a spring and is respectively sleeved on the two guide columns 50, and the fixed magnet 30 and the movable magnet 40 are located between the two guide columns 50. Guided by the two guide columns 50, the movement of the movable magnet 40 is more stable, and the movable magnet 40 is prevented from deviating from the fixed magnet 30. In other embodiments, the elastic member 20 can also be a torsion spring, silica gel, sponge and other structures with elasticity.
[0056] Please refer again to Figure 3 In some embodiments, the movable magnet 40, the elastic member 20 and the guide column 50 are located in the storage cavity 13, and the storage cavity 13 is large and can serve as a movement space of the movable magnet 40.
[0057] Further, the fixed seat 16 has a fixed groove 161, and the fixed magnet 30 is embedded in the fixed groove 161. The fixed groove 161 has a small space and can completely fit the fixed magnet 30, so as to prevent the fixed magnet 30 from shaking.
[0058] Further, the side of the shell 10 close to the fixed seat 16 is provided with a through hole 17, and the movable seat 60 is provided with a fixed hole 68, and the through hole 17 and the fixed hole 68 are used for passing the back strap 72.
[0059] Please refer again to Figure 1The backpack 70 can be a double-shoulder backpack 70 or a single-shoulder backpack 70, which is not limited herein. The backpack 70 comprises a bag body 71, a shoulder strap 72, and the shoulder strap buffering structure 100. The specific structure of the shoulder strap buffering structure 100 is described above, which is not repeated here.
[0060] The shoulder strap 72 comprises a first segment 721 and a second segment 722. One end of the first segment 721 is connected with the bag body 71, and the other end of the first segment 721 is fixed with the movable seat 60. Specifically, the movable seat 60 is provided with a fixing hole 68, and the other end of the first segment 721 is inserted into the accommodating cavity 13 through the through hole 17 and then passes through the fixing hole 68, so as to be fixed with the movable seat 60. One end of the second segment 722 is connected with the bag body 71, and the other end of the second segment 722 is fixed with the shell 10. Thus, the first segment 721 and the second segment 722 are connected through the shoulder strap buffering structure 100 to form a complete shoulder strap 72.
[0061] Optionally, the second segment 722 wraps the shell 10. Alternatively, in other embodiments, the shell 10 is provided with an opening for the second segment 722 to pass through and be fixed.
[0062] When the backpack 70 is shaken, the shoulder strap 72 will be pulled, and the first segment 721 pulls the movable magnet 40 to move towards the fixed magnet 30. At this time, the shoulder strap buffering structure 100 plays a role, which can alleviate the pulling of the first segment 721, so as to produce good pressure buffering to the shoulder, thereby reducing the risk of shoulder injury.
[0063] When the user moves, the double-shoulder bag will vibrate. If no buffering structure is provided, the pressure generated by the vibration of the double-shoulder bag will be directly pressed on the user's shoulders, which will cause different degrees of damage to the shoulders. Through the sliding of the movable magnet 40 towards the fixed magnet 30 in the buffering structure and the compression of the elastic member 20, the stress time of the shoulders can be prolonged, so as to reduce the stress intensity of the shoulders. Through the magnetic repulsion between the movable magnet 40 and the fixed magnet 30 and the reverse force generated by the compression of the elastic member 20, a reverse force is brought to the movable magnet 40, so that the movable magnet 40 slides more smoothly and slowly, the buffering effect of the buffering structure is improved, the shoulders are effectively protected, the pressure of the double-shoulder bag on the shoulders is reduced, and the user can move more freely.
[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features. These modifications or replacements do not drive the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments.
Claims
1. A harness cushioning structure, characterized by, The application relates to a harness buffer structure. The harness buffer structure comprises: a housing, which is provided with a receiving cavity and is provided with a fixed seat; a movable seat, which is movably connected with the housing to be close to or away from the fixed seat; an elastic member, which is arranged in the receiving cavity and is located between the movable seat and the fixed seat; a fixed magnet, which is fixed with the fixed seat; and 2. The harness cushioning structure of claim 1, wherein, a movable magnet, which is fixed with the movable seat, the polarity of the end of the movable magnet and the fixed magnet facing each other is the same, and the elastic member is pressed when the movable magnet moves close to the fixed magnet.
3. The harness cushioning structure of claim 2, wherein, The housing comprises a first shell and a second shell, the first shell and the second shell jointly form the receiving cavity; the movable seat is provided with a mounting cavity, and the movable magnet is embedded in the mounting cavity. The inner wall of the first shell is provided with a first connecting part, the inner wall of the second shell is provided with a second connecting part, and the first connecting part and the second connecting part are both provided with connecting holes for the fasteners to pass through so as to fix the first shell and the second shell; 4. The harness cushioning structure of claim 3, wherein, The movable seat is provided with an avoiding groove, when the movable seat moves to the limit position away from the fixed magnet, the first connecting part and the second connecting part can be matched with and abut against the avoiding groove. The movable seat comprises a box body and a top cover, the box body is provided with the mounting cavity, and the top cover covers the mounting cavity; 5. The harness cushioning structure of claim 1, wherein The side of the top cover away from the box body is concave-convex to have two convex parts and one concave part, the concave part forms the avoiding groove, and the convex part is provided with a mounting hole for another fastener to pass through so as to be fixed with the box body.
6. The harness cushioning structure of claim 5, wherein, The harness buffer structure further comprises a guide column, the guide column is fixed with the housing, the movable seat is provided with a guide hole movably matched with the guide column, and the movable seat can slide along the guide column to be close to or away from the fixed magnet. The movable seat has a first surface and a second surface away from each other, the first surface and the second surface are surfaces extending along the length direction of the guide column; The first surface is provided with a first protrusion, the first protrusion is in contact with the inner wall of the housing so that the first surface is spaced apart from the inner wall of the housing; and / or 7. The harness cushioning structure of claim 5, wherein, The second surface is provided with a second protrusion, the second protrusion is in contact with the inner wall of the housing so that the second surface is spaced apart from the inner wall of the housing. The guide column comprises a main body segment, a first limiting head and a second limiting head, the first limiting head and the second limiting head are arranged at two ends of the main body segment, and the diameter of the first limiting head and the diameter of the second limiting head are respectively greater than or smaller than the diameter of the main body segment; 8. The harness cushioning structure of claim 5, wherein, The housing comprises a first shell and a second shell, the first shell and the second shell jointly form a first limiting cavity and a second limiting cavity, the first limiting head is embedded in the first limiting cavity, and the second limiting head is embedded in the second limiting cavity. The harness buffer structure comprises two guide columns, the elastic member is two springs and is respectively sleeved on the two guide columns, and the fixed magnet and the movable magnet are located between the two guide columns.
9. The harness cushioning structure of any one of claims 1 to 8, wherein, A side of the shell close to the fixed seat is provided with a through hole, and the movable seat is provided with a fixing hole, the through hole and the fixing hole being used for threading a carrying strap.
10. A backpack characterized in that, The application further provides a carrying bag comprising: a bag body, a carrying strap and the carrying strap cushioning structure according to any one of claims 1 to 9; the carrying strap comprises a first section and a second section, one end of the first section being connected with the bag body, the other end of the first section being fixed with the movable seat, one end of the second section being connected with the bag body, and the other end of the second section being fixed with the shell.