Buffer structure and backpack

Abstract

The utility model provides a buffer structure and a backpack, the buffer structure comprises a mounting base, vertical guide rails and a sliding assembly, the back of the vertical guide rails is matched with the front of the mounting base, and the vertical guide rails are symmetrically arranged on the two sides of a vertical center shaft of the mounting base; the sliding assembly is in sliding fit with the vertical guide rail and slides in the vertical direction, the vertical guide rail is further sleeved with an elastic element, the front face of the sliding assembly is provided with abutting parts formed by extending in the left side direction and the right side direction of the vertical guide rail, and the top end and the tail end of the elastic element abut against the abutting parts and the lower portion of the installation base respectively. The vertical guide rail of the buffer structure is matched with the mounting base to guarantee stability, all parts cooperate well, the compression spring assists in buffering, when the buffer structure is applied to a backpack, connection with a backpack body and a strap assembly is convenient and fast, backpack vibration impact can be relieved, the use experience is improved, the service life of the backpack is prolonged, and practicability and economical efficiency are both achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of backpacks and particularly relates to a buffer structure and a backpack. BACKGROUND

[0002] In daily commuting, the user carries the backpack for a long time, especially in a crowded public transportation environment, frequent body shaking and collision make the articles in the backpack continuously impact the back, not only causing the body to be uncomfortable and tired, but also possibly causing damage to the spine and other body parts after long-term accumulation. In the field of outdoor sports, rugged mountain roads, fast cycling and changing terrains are accompanied by inevitable bumps and vibrations, and traditional backpacks cannot effectively buffer these external forces, not only failing to provide a good carrying experience for the sportsman, but also possibly damaging the equipment in the backpack, such as electronic devices and optical instruments. For professional transportation scenarios, precise instruments, fragile cultural relics or samples have very high requirements for the stability of the transportation environment, and traditional backpacks lack sufficient buffer protection mechanisms and cannot meet the needs of preventing damage to articles caused by vibration and impact during transportation.

[0003] Currently, some backpacks attempt to use a tension spring for buffering, but the tension spring buffered backpack has many drawbacks. The tension spring is prone to elastic fatigue during long-term stretching, which causes its buffering performance to gradually decrease with the increase of use time, and it cannot continuously and stably provide effective buffering force. Moreover, the stretching direction of the tension spring is relatively single, and the buffering effect is poor for complex multi-directional impact forces, for example, under the action of oblique or torsional force, the tension spring cannot fully play a buffering role, so that the articles in the backpack may still be damaged by a large impact. Furthermore, the installation and layout of the tension spring are relatively limited in the backpack structure, and a large space is needed to set the stretching stroke, which not only affects the overall design and internal space utilization of the backpack, but also may cause inconvenience or even safety hazards to the user due to the exposure or unreasonable layout of the tension spring.

[0004] The existing backpacks with buffering function not only have gradually decreasing buffering performance with use time, but also need additional fixed connection between the harness assembly and the backpack body, which also affects the buffering performance of the buffer structure to some extent. The present application aims to design a buffer structure that uses a compression spring as a buffer element, and the backpack body and the harness assembly do not need to be completely fixed, and the harness assembly can freely slide relative to the backpack body through the buffer structure, fully utilizing the buffering performance of the buffer structure. UTILITY MODEL CONTENTS

[0005] In view of the problems existing in the prior art, the utility model provides a buffer structure and a backpack, which can solve the above problems.

[0006] According to a first aspect of the present application, a buffering structure is provided, comprising a mounting base, vertical guide rails and a sliding assembly. The back of the vertical guide rails is matched with the front of the mounting base, and the vertical guide rails are symmetrically arranged on both sides of the vertical central axis of the mounting base. The sliding assembly is slidably matched with the vertical guide rails and slides in the vertical direction. An elastic element is further sleeved on the vertical guide rails. The front of the sliding assembly has abutting portions extending to the left and right sides of the vertical guide rails. The top end and the end of the elastic element are respectively abutted against the abutting portions and the lower part of the mounting base.

[0007] By adopting the above technical solution, the sliding direction of the sliding assembly is limited in the vertical direction of the front of the mounting base by the vertical guide rails. The buffering structure as a whole has better stability by symmetrically arranging two vertical guide rails. The elastic element is sleeved on the vertical guide rails, which can save some space. When the sliding assembly moves downward, the elastic element is compressed downward under the action of the force generated by the spring restoring and stretching, and then the sliding assembly slides upward, thereby achieving the buffering effect.

[0008] In a specific embodiment, the front of the mounting base is formed with a protruding first mounting table corresponding to the two ends of the vertical guide rails. The left and right vertical guide rails are respectively fixed at the left and right ends of the first mounting table.

[0009] By adopting the above technical solution, the vertical guide rails are supported by the first mounting tables at the upper and lower ends of the mounting base, and sufficient space is left between the vertical guide rails and the mounting base, so that the elastic element sleeved on the vertical guide rails will not contact the mounting base, ensuring the smoothness of the compression / extension of the elastic element.

[0010] In a specific embodiment, the first mounting table is provided with four mounting holes equidistantly arranged along the width direction of the mounting base, and the left and right vertical guide rails are respectively matched with the leftmost and rightmost mounting holes.

[0011] By adopting the above technical solution, the distance between the left and right vertical guide rails and the central axis of the mounting base is kept consistent by the equidistantly arranged mounting holes, so that the forces distributed on the left and right sides remain balanced during the buffering work.

[0012] In a specific embodiment, the front of the first mounting table is further provided with a protruding limiting column, and the corresponding positions on the two sides of the vertical guide rails are provided with limiting hooks, which are clamped on the limiting column.

[0013] By adopting the above technical solution, the vertical guide rails are positioned by the cooperation of the limiting hooks and the limiting column before being fixed on the mounting holes, so that the position will not be shifted when other connecting members are used to fix the vertical guide rails and the mounting holes.

[0014] In specific embodiments, the elastic element is a compression spring, the end of the compression spring abuts against the top surface of the first mounting platform of the lower part of the mounting base, and the top end of the compression spring abuts against the lower surface of the abutting part.

[0015] By adopting the above technical solution, the top surface of the first mounting platform of the lower part and the lower surface of the abutting part sandwich the compression spring to form a compression space of the compression spring, and the compression spring can provide stable elastic force and has the characteristics of energy absorption and shock absorption. Compared with a tension spring, the compression spring has a longer service life.

[0016] In specific embodiments, the middle part of the mounting base is further provided with a second mounting platform, the height of the second mounting platform is higher than the position of the vertical guide rail, and a guide hole is formed in the second mounting platform for the vertical guide rail to pass through.

[0017] By adopting the above technical solution, the second mounting platform and the guide hole are provided to form a three-point structure in cooperation with the first mounting platforms at the upper and lower ends, thereby further limiting the installation of the vertical guide rail, and the stability of the structure is further improved.

[0018] In specific embodiments, the sliding assembly comprises a sliding block and a connecting block, the back surface of the connecting block is connected to the front surface of the sliding block, the abutting part extends from the front surface of the connecting block to the left and right sides, and a through connecting hole is formed in the abutting part.

[0019] By adopting the above technical solution, the sliding block is responsible for sliding in the vertical guide rail, the connecting block is provided so that part of the sliding assembly can be outside the vertical guide rail, the abutting part extends directly from the left and right sides of the connecting block, and the abutting part on the two sides cooperates with the elastic element when the sliding assembly slides on the vertical guide rail.

[0020] In specific embodiments, the two side edges of the vertical guide rail are bent by 90° in the front direction to form a sliding groove, the sliding block is arranged in the sliding groove, and a plurality of rolling balls are arranged on the left and right sides of the sliding block, and the rolling balls slide with the inner side wall of the sliding groove.

[0021] By adopting the above technical solution, the sliding groove formed by bending is more suitable for the structure of the sliding block, the rolling balls are added on the two sides of the sliding block, which helps to reduce the friction force generated when the sliding block slides, so that the movement of the sliding block in the sliding groove is smoother, and the service life of the parts is also improved.

[0022] In specific embodiments, the two sides of the connecting block are further provided with a draw hook, and the draw hook hooks the top end of the elastic element.

[0023] By adopting the technical scheme, when the sliding assembly is subjected to the elastic force of the elastic element upward, the pull hook can hook the top end of the elastic element, so that the sliding assembly will not slide to a higher position when being reset, and the position and stroke of the sliding assembly in the entire buffer structure are limited to a certain extent.

[0024] According to a second aspect of the present application, a backpack is provided, comprising the above buffer structure, and further comprising a backpack body and a strap assembly, the back surface of the mounting base is fixed on the backpack body through the mounting holes, and the strap assembly covers the front surface of the connecting block and is matched with the abutting portion through the connecting holes; the strap assembly slides relative to the backpack body along the direction of the vertical guide rail.

[0025] By adopting the technical scheme, the mounting base is connected with the backpack body through the four mounting holes, the middle two mounting holes can be connected with the backpack body first, and the leftmost and rightmost two mounting holes can be connected with the backpack body after the vertical guide rail is placed, so that multiple components are fixed at one time, the strap assembly is matched with the abutting portion of the connecting block preferentially, and the strap assembly does not need to be fixedly connected with the backpack body, but is matched with the backpack body through the buffer structure and can slide up and down along the vertical guide rail freely.

[0026] Compared with the prior art, the backpack has the beneficial effects of:

[0027] 1. In terms of the buffer structure, the vertical guide rail is matched with the mounting base in a clever manner, is supported by the symmetrical installation table, guarantees the structural stability, reserves the activity space of the elastic element, makes the elastic element work smoothly and effectively plays the buffering role, and balances the force distribution. The limiting column and the limiting hook ensure the accurate positioning and installation of the vertical guide rail, improve the installation precision and efficiency. The slider and the connecting block in the sliding assembly cooperate with each other, the slider smoothly slides in the sliding groove with the ball, reduces the friction and wear, prolongs the service life, the abutting portion extending from the connecting block is matched with the elastic element, and the pull hook can limit the stroke of the sliding assembly, and enhances the overall stability and controllability. The compression spring as the elastic element has the advantages of stable elastic force, energy absorption and shock absorption characteristics and long service life, and provides reliable protection for the buffer.

[0028] 2. For backpacks, the integration of such a buffer structure greatly improves the user experience. The installation base is conveniently connected to the backpack body, and the fixation of multiple components can be completed at one time, reducing the assembly difficulty. The cooperation mode of the shoulder strap assembly and the abutment part of the connecting block is simple and efficient, without the need for multiple point fixation, saving installation time and cost. More importantly, in actual use, the buffer structure can effectively reduce the vibration and impact when carrying, whether for daily travel or outdoor activities, it can provide users with a more comfortable carrying experience, protect the user's shoulder and back health, and at the same time prolong the service life of the backpack, which has high practicality and economy. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings are included to provide a further understanding of embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and serve to explain principles of the present application. Other embodiments and many of the intended advantages of the present application will be readily appreciated as the same becomes better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.

[0030] Figure 1 is a schematic view of a buffer structure according to an embodiment of the present application;

[0031] Figure 2 is a partial enlarged view of a buffer structure according to an embodiment of the present application;

[0032] Figure 3 is a schematic view of a buffer structure according to another embodiment of the present application;

[0033] Figure 4 is a schematic view of a sliding assembly installation according to an embodiment of the present application;

[0034] Figure 5 is a schematic view of a backpack structure according to an embodiment of the present application.

[0035] Meaning of each number in the figure:

[0036] Installation base 01, vertical guide rail 02, sliding assembly 03, elastic element 04, abutment part 05, first mounting table 06, mounting hole 07, limiting column 08, limiting hook 09, second mounting table 10, guide hole 11, sliding block 12, connecting block 13, connecting hole 14, sliding groove 15, ball 16, pull hook 17, backpack body 18, shoulder strap assembly 19. DETAILED DESCRIPTION

[0037] In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration illustrative embodiments in which the application can be practiced. For purposes of explanation and illustration, directional terms are used with respect to the descriptions, such as "top," "bottom," "left," "right," "up," "down," etc. Because embodiments can be in various orientations (rotated 90 degrees or at other orientations), the terms should be interpreted to encompass the appropriate orientation(s) in view of the specific context (e.g., a left side of a device can actually be a right side when the device is rotated 90 degrees counter clockwise, and vice versa). It is to be understood that the application can be practiced without the specific details disclosed below, which are provided to give a complete understanding of certain embodiments of the application. Therefore, the following detailed description should not be considered to be limiting of the scope or spirit of the application, and the scope and spirit of the application are defined by the appended claims.

[0038] According to a first aspect of the present application, a buffering structure is provided, Figure 1 A buffering structure according to embodiments of the present application is shown in the schematic view as Figure 1 As shown, the buffering structure comprises a mounting base 01, vertical guide rails 02 and a sliding assembly 03, the back of the vertical guide rails 02 is matched with the front of the mounting base 01, and the vertical guide rails 02 are symmetrically arranged on both sides of the vertical central axis of the mounting base 01; the sliding assembly 03 is in sliding cooperation with the vertical guide rails 02 and slides in the vertical direction, and an elastic element 04 is further sleeved on the vertical guide rails 02; the front of the sliding assembly 03 has an abutting portion 05 extending to the left and right sides of the vertical guide rails 02, and the top end and the end of the elastic element 04 abut against the abutting portion 05 and the lower part of the mounting base 01 respectively.

[0039] By adopting the above technical solution, the sliding direction of the sliding assembly 03 is limited in the vertical direction of the front of the mounting base 01 by the vertical guide rails 02, the stability of the buffering structure as a whole is better by symmetrically arranging two vertical guide rails 02, the elastic element 04 is sleeved on the vertical guide rails 02, which can save a certain space, and when the sliding assembly 03 moves downward, the elastic element 04 is forced to compress downward, and then the sliding assembly 03 slides upward under the action force generated by the spring recovery and stretching, so as to achieve the buffering effect.

[0040] In specific embodiments, the front of the mounting base 01 is formed with a protruding first mounting table 06 corresponding to the two ends of the vertical guide rails 02, and the left and right vertical guide rails 02 are respectively fixed at the left and right ends of the first mounting table 06.

[0041] By adopting the above technical solution, the vertical guide rails 02 are supported by the first mounting tables 06 at the upper and lower ends of the mounting base 01, and at the same time, sufficient space is left between the vertical guide rails 02 and the mounting base 01, so that the elastic element 04 can be sleeved on the vertical guide rails 02 without contacting the mounting base 01, thereby ensuring the smoothness of the compression / expansion of the elastic element 04.

[0042] In specific embodiments, the first mounting platform 06 is provided with four mounting holes 07 at equal intervals along the width direction of the mounting base 01, and the vertical guide rails 02 on the left and right sides are matched with the leftmost and rightmost mounting holes 07 respectively.

[0043] By using the above technical scheme, the distance between the vertical guide rails 02 on the left and right sides and the axis in the mounting base 01 is kept consistent by using the mounting holes 07 arranged at equal intervals, and then the forces distributed on the left and right sides are kept in a balanced state during the execution of the buffering work.

[0044] Figure 2 A partial enlarged view of the buffering structure according to an embodiment of the present application is shown in FIG. 2. Figures 1-2 As shown in FIG. 2, the front surface of the first mounting platform 06 is further provided with a protruding limiting column 08, and the limiting clamping hooks 09 are arranged at the corresponding positions on the two sides of the vertical guide rail 02, and the clamping hooks are clamped on the limiting column 08.

[0045] By using the above technical scheme, the vertical guide rail 02 is positioned by using the cooperation of the limiting clamping hooks 09 and the limiting column 08 before being fixed on the mounting hole 07, and the position will not be deviated when other connecting members are used to fix the vertical guide rail 02 and the mounting hole 07.

[0046] In specific embodiments, the elastic element 04 is a compression spring, the end of the compression spring abuts against the top surface of the first mounting platform 06 at the lower part of the mounting base 01, and the top end of the compression spring abuts against the lower surface of the abutting part 05.

[0047] By using the above technical scheme, the top surface of the first mounting platform 06 at the lower part and the lower surface of the abutting part 05 sandwich the compression spring to form a compression space of the compression spring, and the compression spring can provide stable elastic force and has the characteristics of energy absorption and shock absorption, and has a longer service life compared with a tension spring.

[0048] Further, the elastic element 04 can be a tension spring or a compression spring, which can be arranged on the upper and lower sides of the sliding assembly 03, and further has the effect of bidirectional buffering on the upper and lower sides.

[0049] Figure 3 A buffering structure schematic view according to another embodiment of the present application is shown in FIG. 4. Figures 1-3 As shown in FIG. 4, the middle part of the mounting base 01 is further provided with a second mounting platform 10, the height of the second mounting platform 10 is higher than the position of the vertical guide rail 02, and the second mounting platform 10 is provided with a guide hole 11 through which the vertical guide rail 02 passes.

[0050] Specifically, the second mounting table 10 is the same as the first mounting table 06 in structure except that the height is different and the guide hole 11 is provided, and the second mounting table 10 is also provided with mounting holes 07 at equal intervals, and the middle part of the vertical guide rail 02 is also provided with a corresponding hole.

[0051] By adopting the above technical scheme, the second mounting table 10 and the guide hole 11 are arranged to form a three-point structure with the first mounting table 06 at the upper end and the lower end, thereby further limiting the installation of the vertical guide rail 02, and the stability of the structure is also improved.

[0052] Figure 4 A sliding assembly installation schematic diagram according to an embodiment of the present application is shown, as shown in the figure, Figures 1-4 The sliding assembly 03 includes a sliding block 12 and a connecting block 13, the back surface of the connecting block 13 is connected to the front surface of the sliding block 12, the abutting portion 05 extends from the front surface of the connecting block 13 to the left and right sides, and the connecting hole 14 is provided through the abutting portion 05.

[0053] Specifically, the back surface of the connecting block 13 and the front surface of the sliding block 12 can be connected by riveting, welding or the like to ensure the stability of the connection.

[0054] By adopting the above technical scheme, the sliding block 12 is responsible for sliding in the vertical guide rail 02, the connecting block 13 is arranged so that part of the sliding assembly 03 can be outside the vertical guide rail 02, the abutting portion 05 extends directly from the left and right sides of the connecting block 13, and when the sliding assembly 03 slides on the vertical guide rail 02, the abutting portion 05 on the two sides cooperates with the elastic element 04.

[0055] In a specific embodiment, the two side edges of the vertical guide rail 02 are bent 90° to form a sliding groove 15 in the front direction, the sliding block 12 is arranged in the sliding groove 15, and a plurality of rolling balls 16 are arranged on the left and right sides of the sliding block 12, and the rolling balls 16 slide with the inner side wall of the sliding groove 15.

[0056] By adopting the above technical scheme, the sliding groove 15 formed by bending is more suitable for the structure of the sliding block 12, the rolling balls 16 are added on the two sides of the sliding block 12, which helps to reduce the friction generated when the sliding block 12 slides, so that the movement of the sliding block 12 in the sliding groove 15 is smoother, and the service life of the parts is also improved.

[0057] In a specific embodiment, the two sides of the connecting block 13 are also provided with a draw hook 17, and the draw hook 17 hooks the top end of the elastic element 04.

[0058] By adopting the technical scheme, when the sliding assembly 03 is subjected to the elastic force of the elastic element 04 upwards, the hook 17 can hook the top end of the elastic element 04, so that the sliding assembly 03 cannot slide to a higher position when being reset, and the position and stroke of the sliding assembly 03 in the entire buffer structure are limited to a certain extent.

[0059] According to a second aspect of the present application, a backpack is provided, Figure 5 A backpack structure schematic diagram according to an embodiment of the present application is shown, as Figures 1-5 As shown, the backpack includes the above buffer structure, and further includes a backpack body 18 and a strap assembly 19. The back surface of the mounting base 01 is fixed on the backpack body 18 through the mounting holes 07, the strap assembly 19 covers the front surface of the connecting block 13, and is matched with the abutting portions 05 through the connecting holes 14; the strap assembly 19 slides relative to the backpack body 18 along the direction of the vertical guide rail 02.

[0060] Specifically, in the embodiment, the first mounting table 06 is first riveted with the backpack body 18 through the two mounting holes 07 in the middle, and then the vertical guide rail 02 is riveted to the backpack body 18 together with the mounting holes 07 at the left and right ends after being positioned; the abutting portions 05 at the left and right sides of the connecting block 13 are also connected with the strap assembly 19 by riveting.

[0061] Further, a protective cover (not shown in the figure) can be arranged on the front surface of the buffer structure, the protective cover can completely cover the entire mounting base 01, and the protective cover is provided with a hole position covering the sliding stroke of the connecting block 13. The protective cover can further protect the internal components of the buffer structure, and does not affect the normal work of the sliding assembly 03.

[0062] During use of the backpack of the present application, the backpack body 18 will rise and fall with the walking action of the user. Since the backpack body 18 and the strap assembly 19 are not completely fixedly connected, the strap assembly 19 can freely slide up and down relative to the backpack body 18. The strap assembly 19 is the bearing part of the user, and the backpack body 18 is the carrying part. With the walking action of the user, the sliding assembly 03 will slide back and forth along the vertical guide rail 02. When the elastic element 04 is compressed, the reaction force generated by the elastic element 04 will offset the action force of the backpack, so that the backpack can quickly recover to a stable state, avoiding the continuous large fluctuation of the backpack to adversely affect the user.

[0063] By adopting the above technical scheme, the mounting base 01 is connected with the backpack body 18 through four mounting holes 07, the middle two mounting holes 07 can be connected with the backpack body 18 first, and the leftmost and rightmost two mounting holes 07 can be connected with the backpack body 18 after the vertical guide rail 02 is placed, realizing the connection and fixation of multiple components at one time. Meanwhile, the shoulder strap assembly 19 is preferentially matched with the abutting portion 05 of the connecting block 13, without the need for multi-point fixation with the entire buffer structure. The shoulder strap assembly 19 does not need to be fixedly connected with the backpack body 18, but only needs to be matched with the backpack body 18 through the buffer structure, and can freely slide up and down along the vertical guide rail 02.

[0064] Compared with the prior art, the application has the beneficial effects that:

[0065] 1. In terms of the buffer structure, the vertical guide rail 02 is matched with the mounting base 01 in a clever manner, which not only guarantees the stability of the structure, but also reserves the activity space of the elastic element 04, so that the elastic element 04 works smoothly and can effectively play a buffering role, and the force distribution is balanced. The limiting column 08 and the limiting hook 09 ensure the accurate positioning and installation of the vertical guide rail 02, improving the installation precision and efficiency. The slider 12 and the connecting block 13 in the sliding assembly 03 cooperate with each other, the slider 12 smoothly slides in the sliding groove 15 with the ball 16, reducing friction and wear, prolonging the service life, and the abutting portion 05 extending from the connecting block 13 is matched with the elastic element 04, and the setting of the pull hook 17 can also limit the stroke of the sliding assembly 03, enhancing the overall stability and controllability. The compression spring as the elastic element 04 provides reliable protection for buffering with the advantages of stable elastic force, energy absorption and shock absorption characteristics and long service life.

[0066] 2. For the backpack, the integration of such a buffer structure greatly improves the user experience. The mounting base 01 is connected with the backpack body 18 conveniently, and multiple components can be fixed at one time, reducing the assembly difficulty. The matching mode of the shoulder strap assembly 19 and the abutting portion 05 of the connecting block 13 is simple and efficient, without the need for multi-point fixation, saving installation time and cost. More importantly, in actual use, the buffer structure can effectively reduce the vibration and impact when carrying, whether for daily travel or outdoor activities, it can provide users with a more comfortable carrying experience, protect the health of the user's shoulders and back, and prolong the service life of the backpack, which has high practicality and economy.

[0067] It is clear that a person skilled in the art can make various modifications and changes to the embodiments of the present application without departing from the spirit and scope of the present application. In this way, the present application also aims to encompass these modifications and changes if they are within the scope of the claims of the present application and their equivalents. The word "comprising" does not exclude the presence of other elements or steps than those listed in a claim. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be considered as limiting the scope.

Claims

1. A cushioning structure, characterized by, The mounting base, vertical guide rail and sliding assembly are provided, the back of the vertical guide rail is matched with the front of the mounting base, and the vertical guide rails are symmetrically arranged on both sides of the vertical central axis of the mounting base; the sliding assembly is matched with the vertical guide rail and slides in the vertical direction, the top end and the tail end of the elastic element are respectively abutted against the abutting portion and the lower part of the mounting base.

2. The cushioning structure of claim 1, wherein, The front of the mounting base is provided with a protruding first mounting table corresponding to the two ends of the vertical guide rail, and the vertical guide rails on both sides are respectively fixed at the left and right ends of the first mounting table.

3. The cushioning structure of claim 2, wherein, Four mounting holes are equidistantly arranged on the first mounting table along the width direction of the mounting base, and the vertical guide rails on both sides are respectively matched with the leftmost and rightmost mounting holes.

4. The cushioning structure of claim 2, wherein, The front of the first mounting table is further provided with a protruding limiting column, and the limiting hooks are arranged at the corresponding positions on both sides of the vertical guide rail, and the hooks are clamped on the limiting column.

5. The cushioning structure of claim 2, wherein, The elastic element is a compression spring, the tail end of the compression spring is abutted against the top surface of the first mounting table of the lower part of the mounting base, and the top end of the compression spring is abutted against the lower surface of the abutting portion.

6. The cushioning structure of claim 2, wherein, The middle part of the mounting base is further provided with a second mounting table, the height of the second mounting table is higher than the position of the vertical guide rail, and the guide hole is arranged on the second mounting table for the vertical guide rail to pass through.

7. The cushioning structure of claim 1, wherein, The sliding assembly comprises a sliding block and a connecting block, the back of the connecting block is connected with the front of the sliding block, the abutting portion extends from the front of the connecting block to both sides, and the connecting hole is arranged on the abutting portion.

8. The cushioning structure of claim 7, wherein, The two side edges of the vertical guide rail are bent by 90° to form a sliding groove in the front direction, the sliding block is arranged in the sliding groove, and a plurality of rolling balls are arranged on both sides of the sliding block, and the rolling balls are matched with the inner side wall of the sliding groove.

9. The cushioning structure of claim 7, wherein, The two sides of the connecting block are further provided with hooks, and the hooks hook the top end of the elastic element.

10. A backpack comprising a cushioning structure according to any one of claims 1-9, characterized in that, The mounting base is further provided with a backpack body and a strap assembly, the back of the mounting base is fixed on the backpack body through the mounting hole, the strap assembly covers the front of the connecting block and is matched with the abutting portion through the connecting hole, and the strap assembly slides relative to the backpack body along the direction of the vertical guide rail.

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