Pressure relief shoulder pads for backpack shoulder straps and backpacks

Abstract

The present application belongs to the technical field of hand-held articles, and particularly relates to a decompression shoulder pad for a shoulder strap of a backpack and the backpack; the decompression shoulder pad comprises a shoulder pad main body connected with the shoulder strap, the shoulder pad main body is provided with a shock-absorbing air bag, the length direction of the shock-absorbing air bag is the same as the length direction of the shoulder pad main body, and the end face of the shock-absorbing air bag is flat in the width direction of the shock-absorbing air bag; the shock-absorbing air bag is provided with a support, the length direction of the support is the same as the width direction of the shock-absorbing air bag, and the support is equidistantly arranged in the shock-absorbing air bag along the length direction of the shock-absorbing air bag; the existence of the support not only enhances the firmness of the air bag structure, but also keeps the shape stable when being pressed, thereby avoiding the problem of uneven pressure caused by excessive deformation; and the shoulder pad can uniformly disperse pressure and provide continuous and stable support even in the case of bearing large pressure.

Description

Technical Field

[0001] This invention belongs to the field of hand-held items technology, specifically relating to a pressure-relieving shoulder pad for the shoulder straps of a backpack and a backpack. Background Technology

[0002] With the increasing popularity of backpacks, their weight has become a major concern. To reduce shoulder strain, shock-absorbing shoulder pads have emerged, improving carrying comfort and effectively protecting shoulder health.

[0003] A search revealed that the patent (application number CN201110044720.4) "Decompression Shoulder Pad for Backpack Shoulder Straps and Backpack" enhances structural strength by bonding a silicone pressure-reducing pad with a TPU film layer, while also providing tensile strength and softness. However, this design uses an integrated setup, making it unsuitable for direct application to other types of backpacks. Furthermore, silicone has a slow rebound speed and low energy recovery efficiency, unable to adapt to dynamic changes as quickly as an airbag.

[0004] Another patent (application number CN201720998731.9), "Anti-slip Airbag Shoulder Pad," uses multiple airbags of varying sizes and spaced apart to provide cushioning protection, preventing shoulder pain or scratches caused by prolonged weight-bearing. Although this design uses multiple airbags for shock absorption, each airbag works independently, making it difficult to achieve a coordinated overall shock absorption effect, which may lead to uneven force distribution in complex usage environments.

[0005] Furthermore, existing designs mostly feature independent shoulder straps with no linkage mechanism between the left and right shoulder pads, making it impossible to dynamically adjust pressure distribution. When items inside the backpack shift, this design can easily exacerbate user discomfort and further negatively impact the carrying experience. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a pressure-relieving shoulder pad for the shoulder straps of a backpack and a backpack, so as to solve the problems existing in the above-mentioned background art.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is a pressure-reducing shoulder pad for backpack shoulder straps. The backpack has shoulder straps, and the pressure-reducing shoulder pad includes a shoulder pad body connected to the shoulder straps. The shoulder pad body has a shock-absorbing airbag, the length direction of which is the same as the length direction of the shoulder pad body, and the upper surface of the shock-absorbing airbag is flat in its width direction. A support member is provided inside the shock-absorbing airbag, the length direction of which is the same as the width direction of the shock-absorbing airbag, and the support member is equidistantly arranged inside the shock-absorbing airbag along the length direction of the shock-absorbing airbag. When the shock-absorbing airbag is subjected to pressure, the support member maintains the stability of the shape of the shock-absorbing airbag, ensuring that the pressure-reducing shoulder pad is subjected to balanced force.

[0008] Preferably, the support member is arranged in a ring shape, with an opening on the side of the support member near the shoulder strap, and the side of the support member away from the shoulder strap is fixedly mounted on the side wall of the shock-absorbing airbag; a first slider is slidably arranged on both sides of the opening of the support member, and the first sliders are connected in series by a connecting rope; when the shock-absorbing airbag is subjected to abnormal pressure, the first sliders and the connecting ropes work together to ensure that all the support members are subjected to balanced force on the pressure-relieving shoulder pad.

[0009] Furthermore, an adjusting slider is provided at one end of the shock-absorbing airbag along its length. The adjusting slider is slidably sealed on the shock-absorbing airbag and is connected to the connecting rope. Limiting elements are provided at both ends of the adjusting slider and the first slider along the length of the shock-absorbing airbag. The limiting elements constrain the sliding stroke of the first slider on the support and the sliding stroke of the adjusting slider on the shock-absorbing airbag. When the shock-absorbing airbag is subjected to abnormal pressure, the tension of the connecting rope can be adjusted by controlling the sliding stroke of the adjusting slider inside the shock-absorbing airbag, thereby improving the uniformity of force distribution on the pressure-reducing shoulder pad.

[0010] Furthermore, the shoulder pad body and the shock-absorbing airbag are detachably connected to facilitate the replacement of the shock-absorbing airbag; an adjustment component is provided at one end of the shoulder pad body and the adjustment slider, the adjustment component is connected to the adjustment slider, and the adjustment component is used to control the sliding stroke of the adjustment slider inside the shock-absorbing airbag.

[0011] Furthermore, the adjustment component includes a connector connected to the adjustment slider and an adjustment member rotatably mounted on the shoulder pad body. A connecting member is provided between the adjustment member and the connector, and the connecting member is used for transmission between the adjustment member and the connector. The adjustment member and the connecting member are gears and racks.

[0012] To solve the above-mentioned technical problems, the second technical solution of the present invention is an optimization of the pressure-relieving shoulder pad described in the first technical solution: the backpack has a handle strap, and the pressure-relieving shoulder pad includes a handle pad for connecting the pressure-relieving shoulder pad to the left and right shoulder straps. The handle pad consists of a handle body and a handle airbag. The handle body is connected to the handle strap, and the handle airbag has a connector for connecting to the pressure-relieving shoulder pad. The adjusting slider is located at one end of the pressure-relieving shoulder pad away from the handle pad, and a connecting... The connecting slider and the pressure-reducing shoulder pad are connected by a sliding seal. The shock-absorbing airbag extends from the end of the connecting slider and is adapted to the connector. The connector has a seal for controlling the opening and closing. The seal is connected to the connecting slider via the connecting rope. When the shock-absorbing airbag is subjected to abnormal pressure, the connecting rope pulls the seal to connect the connector and the connector, allowing the gas in the handle airbag to enter the pressure-reducing shoulder pad, ensuring that the pressure-reducing shoulder pad is under balanced force.

[0013] Furthermore, a compression spring is provided between the sealing element and the connecting pipe. The compression spring is located on the side of the sealing element near the pressure-reducing shoulder pad, and the compression spring and the connecting rope are located at the same end of the sealing element. The compression spring is used to control the disconnection of the connecting pipe, and the connecting rope is used to control the connection of the connecting pipe.

[0014] Furthermore, the pressure-reducing shoulder pads are divided into left and right shoulder pads based on the left and right shoulder straps. The left shoulder pad and the handle pad, as well as the right shoulder pad and the handle pad, are connected and controlled separately. The internal air pressure of the handle airbag is greater than the internal air pressure of the shock-absorbing airbag. When the left and right shoulder pads are under normal force, the connecting pipes of the left and right shoulder pads are both disconnected. When the left and right shoulder pads are under uneven force, the connecting pipe on the pressure-reducing shoulder pad on the side with greater force is connected, allowing the internal gas of the handle airbag to move into the shock-absorbing airbag, ensuring that the left and right shoulder pads are under even force.

[0015] To solve the above-mentioned technical problems, the third technical solution of the present invention is a backpack with a pressure-reducing shoulder pad as described in the first technical solution. When the backpack is in normal use, the shock-absorbing airbag and the supporting members ensure the force balance of the pressure-reducing shoulder pad. When subjected to abnormal pressure, the first slider and the connecting rope can work together with all the supporting members to balance the pressure on the pressure-reducing shoulder pad. When it is necessary to adjust the force balance of the pressure-reducing shoulder pad, the sliding stroke of the adjusting slider in the shock-absorbing airbag can be controlled by the adjusting component to achieve the optimal force balance state.

[0016] To solve the above-mentioned technical problems, the fourth technical solution of the present invention is a backpack that uses the pressure-reducing shoulder pads as described in the second technical solution. When the backpack is in normal use, the shock-absorbing airbag and the support member ensure the balanced force of the pressure-reducing shoulder pads. When it is necessary to adjust the force balance of the pressure-reducing shoulder pads, the sliding stroke of the adjusting slider in the shock-absorbing airbag can be controlled by the adjusting component to achieve the optimal force balance. When the backpack is under uneven force and one side of the pressure-reducing shoulder pad is subjected to abnormal pressure, the connecting pipe on that side will be opened under the pull of the connecting rope, so that the gas in the handle airbag flows into the shock-absorbing airbag, thereby balancing the pressure on both sides.

[0017] The main technical effects of this invention are reflected in the following aspects:

[0018] This invention incorporates equidistantly distributed annular support members inside the shock-absorbing airbag. These support members are arranged along the width of the airbag and have an opening on one side to accommodate the shoulder strap design. The presence of these support members not only enhances the robustness of the airbag structure but also maintains its shape stability under pressure, preventing uneven pressure caused by excessive deformation. This ensures that even under significant pressure, the shoulder pad can evenly distribute pressure and provide continuous and stable support.

[0019] The shock-absorbing airbags feature a flat design, increasing the contact area with the shoulders and improving comfort. At the same time, the flat design allows the airbags to respond more quickly to pressure changes, providing better dynamic adjustment capabilities. This not only enhances the user's wearing experience but also allows the shoulder pads to automatically adjust to their optimal position under various movement conditions, effectively alleviating fatigue caused by prolonged carrying.

[0020] To address the issue of uneven pressure caused by the independent operation of the left and right shoulder pads, this invention introduces a linkage mechanism. By connecting the various first sliders via a connecting rope, when one shoulder pad experiences greater pressure, the system automatically adjusts the state of the other side to achieve overall pressure balance. This mechanism ensures that the shoulders experience uniform pressure regardless of the contents of the backpack, significantly improving carrying comfort and safety. When uneven pressure is detected on one shoulder pad, the connecting pipe on that side is activated, allowing gas from the handle airbag to flow into the shock-absorbing airbag, helping to redistribute pressure; ensuring optimal pressure distribution on the shoulders even in complex and changing usage environments. Attached Figure Description

[0021] Figure 1 Here is a structural diagram of an existing backpack;

[0022] Figure 2 This is a structural diagram of the pressure-relieving shoulder pad in this invention;

[0023] Figure 3 for Figure 2 Half-section diagram of the pressure-reducing shoulder pad;

[0024] Figure 4 for Figure 2 A schematic diagram of the internal structure of the shock-absorbing airbag in the medium-pressure shoulder pad;

[0025] Figure 5 for Figure 2 A schematic diagram of the adjustment mechanism of the pressure-reducing shoulder pad;

[0026] Figure 6 for Figure 2 Structural diagram of the center handle pad;

[0027] Figure 7 for Figure 2 Diagram showing the connection between the pressure-reducing shoulder pad and the handle pad;

[0028] In the diagram: 1. Backpack; 11. Shoulder strap; 12. Handle strap; 2. Pressure-relieving shoulder pad; 21. Shoulder pad body; 22. Shock-absorbing airbag; 23. Support component; 24. First slider; 25. Connecting rope; 26. Adjusting slider; 27. Limiting component; 28. Adjusting component; 281. Connector; 282. Adjusting component; 283. Connector; 29. ​​Connecting slider; 3. Handle pad; 31. Handle body; 32. Handle airbag; 33. Connector; 34. Connecting pipe; 35. Sealing component; 36. Compression spring. Detailed Implementation

[0029] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master. In the embodiments, it should be understood that the terms "middle," "upper," "lower," "top," "right side," "left end," "above," "back," "center," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, unless otherwise specified in this specific embodiment, the connection or fixing method between components can be achieved by bolt fixing, pin fixing, or pin connection commonly used in the prior art, etc., and therefore will not be described in detail in this embodiment. Example

[0030] See Figure 1 , Figure 2This embodiment discloses a pressure-reducing shoulder pad 2 for backpack shoulder straps. The backpack 1 has shoulder straps 11. The pressure-reducing shoulder pad 2 includes a shoulder pad body 21 connected to the shoulder straps 11. The shoulder pad body 21 has a shock-absorbing airbag 22. The length direction of the shock-absorbing airbag 22 is the same as the length direction of the shoulder pad body 21. The airbag is made of high-strength, wear-resistant, and highly elastic TPU material. The alignment of the airbag's length direction with the shoulder pad body 21 ensures effective cushioning when subjected to vertical pressure. The shock-absorbing airbag 22 has a flat upper surface in its width direction; this not only increases the contact area with the shoulder and improves comfort, but also allows the airbag to respond to pressure changes more quickly, providing better dynamic adjustment capabilities. The shock-absorbing airbag 22 is provided with a support member 23. The length direction of the support member 23 is the same as the width direction of the shock-absorbing airbag 22, and the support member 23 is equidistantly arranged within the shock-absorbing airbag 22 along its length direction. The support member 23 can be made of a flexible but relatively rigid material (such as nylon or lightweight alloy), which can maintain the stability of the airbag's shape while ensuring the shock absorption effect. This solves the problem of uneven pressure distribution caused by the lack of internal support in the prior art. When the shock-absorbing airbag 22 is subjected to pressure, the support member 23 maintains the stability of the shape of the shock-absorbing airbag 22, ensuring that the pressure-reducing shoulder pad 2 is subjected to balanced force.

[0031] The shoulder pad body 21 and the shoulder strap 11 can be detachably or integrally connected. When the shoulder pad body 21 and the shoulder strap 11 are integrally connected, it means that they are manufactured as a single unit, rather than being assembled together by additional connectors or devices. This design provides a more robust structure and reduces potential malfunctions or inconveniences due to weak connections. Integral connections generally mean greater durability and potentially better comfort, as there are no additional seams or connecting parts that could cause discomfort to the user.

[0032] See Figure 3 , Figure 4The support member 23 is circular in shape, with an opening on the side near the shoulder strap 11. This opening near the shoulder strap 11 allows for a better fit to the user's body curve. The side of the support member 23 away from the shoulder strap 11 is fixed to the side wall of the shock-absorbing airbag 22. This not only provides effective internal support, preventing excessive deformation of the shock-absorbing airbag 22 under pressure, but also ensures the flexibility and adaptability of the overall shoulder pad structure. The opening also allows the support member 23 room to deform under pressure, preventing breakage. The support member 23 has a first slider 24 slidably disposed on both sides of the opening, and the first sliders 24 are connected in series by a connecting rope 25. When the shock-absorbing airbag 22 is subjected to abnormal pressure (such as a sudden impact or long-term uneven pressure), the first sliders 24 and the connecting rope 25 work together with all the support members 23 to ensure that the pressure-reducing shoulder pad 2 is subjected to balanced force. Specifically, the sliders can slide on the support member 23, and through the action of the connecting rope 25, all the support members 23 work together to share the pressure, ensuring balanced force, thereby improving the stability and comfort of the entire shoulder pad.

[0033] See Figure 4 , Figure 5 The shock-absorbing airbag 22 has an adjusting slider 26 at one end along its length. The adjusting slider 26 is slidably and sealed on the shock-absorbing airbag 22, ensuring smooth sliding while maintaining airtightness. The adjusting slider 26 is connected to the connecting rope 25, allowing real-time adjustment of the tension of the connecting rope 25 according to actual pressure conditions, thereby improving the uniformity of force distribution. Limiting elements 27 are provided at both ends of the adjusting slider 26 and the first slider 24 along the length of the shock-absorbing airbag 22. To prevent the first slider 24 and the adjusting slider 26 from exceeding their predetermined working range, limiting elements 27 are provided at both ends of their respective sliding paths. This not only prevents damage to components due to excessive movement but also ensures efficient operation of each component within a preset range, guaranteeing the stability and reliability of the entire system. The limiting element 27 can be a simple baffle or a more complex locking device, used to limit the maximum stroke of the slider to prevent equipment damage under overload conditions. The limiting element 27 not only provides physical constraints on the slider but also helps maintain dynamic balance within the system, ensuring effective pressure distribution even under extreme conditions. The limiting member 27 constrains the sliding stroke of the first slider 24 on the support member 23 and the sliding stroke of the adjusting slider 26 on the shock-absorbing airbag 22; when the shock-absorbing airbag 22 is subjected to abnormal pressure, the tension of the connecting rope 25 is adjusted by controlling the sliding stroke of the adjusting slider 26 inside the shock-absorbing airbag 22, thereby improving the uniformity of force on the pressure-reducing shoulder pad 2.

[0034] See Figure 3 , Figure 5 The shoulder pad body 21 and the shock-absorbing airbag 22 are detachably connected, allowing users to easily replace the shock-absorbing airbag 22 as needed. This not only extends the product's lifespan but also allows users to select airbags with different characteristics (such as hardness and elasticity) for different usage scenarios. An adjustment component 28 is provided at one end adjacent to the adjustment slider 26. The adjustment component 28 is connected to the adjustment slider 26 and controls the sliding stroke of the adjustment slider 26 inside the shock-absorbing airbag 22. This allows users to manually adjust the tension of the connecting rope 25, thereby optimizing pressure distribution and improving comfort and adaptability. The adjusting component 28 includes a connector 281 connected to the adjusting slider 26 and an adjusting member 282 rotatably mounted on the shoulder pad body 21. A connecting member 283 is provided between the adjusting member 282 and the connector 281, and the connecting member 283 is used for transmission between the adjusting member 282 and the connector 281. The adjusting member 282 and the connecting member 283 are a gear and a rack; the transmission of force is achieved through the cooperation of the gear and the rack. When the user rotates the adjusting member 282, the rack will drive the connector 281 to move, thereby causing the adjusting slider 26 to slide along the length direction of the shock-absorbing airbag 22. The user can adjust the position of the adjusting slider 26 by rotating the adjusting member 282, thereby changing the tension of the connecting rope 25. Specifically, rotating the adjusting member 282 clockwise or counterclockwise will cause the rack to drive the connector 281 forward or backward, and the adjusting slider 26 will move accordingly. Example

[0035] This embodiment discloses a pressure-reducing shoulder pad 2 for backpack shoulder straps. Compared to the pressure-reducing shoulder pad in Embodiment 1, this embodiment adds a handle pad 3 to link the pressure-reducing shoulder pads on both sides of the backpack 1, further optimizing pressure distribution and providing a more even and comfortable carrying experience; specifically as follows: the backpack 1 has a handle strap 12,

[0036] See Figure 1 , Figure 2 , Figure 6The pressure-relieving shoulder pad 2 includes a handle pad 3 for connecting the pressure-relieving shoulder pad 2 to the left and right shoulder straps 11. The handle pad 3 consists of a handle body 31 and a handle airbag 32. The handle body 31 is connected to the handle strap 12. The handle airbag 32 has a connector 33 that connects to the pressure-relieving shoulder pad 2. The adjusting slider 26 is located on the pressure-relieving shoulder pad at the end away from the handle pad 3 and is mainly used to control the tension of the connecting rope 25. A connecting slider 29 is provided on the end of the pressure-relieving shoulder pad near the handle pad 3. The connecting slider 29 and the pressure-relieving shoulder pad are connected by a sliding seal. The shock-absorbing airbag 22 extends from the end where the connecting slider 29 is located to a connecting pipe 34 that is adapted to the connector 33. The connecting pipe 34 is adapted to the connector 33 on the handle airbag 32 to form an air channel. The connecting pipe 34 has a sealing element 35 for controlling the opening and closing of the connection. The sealing element 35 is connected to the connecting rope 25 and the connecting slider 29. When the shock-absorbing airbag 22 is subjected to abnormal pressure, the connecting rope 25 pulls the sealing element 35 to connect the connecting joint 33 and the connecting pipe 34, allowing the gas in the handle airbag 32 to enter the pressure-reducing shoulder pad 2, ensuring the pressure on the pressure-reducing shoulder pad 2 is balanced. The gas in the handle airbag 32 enters the pressure-reducing shoulder pad through the connecting pipe 34, supplementing the part that needs extra support due to excessive local pressure, thereby redistributing the pressure in the entire shoulder pad system and ensuring balanced pressure. When the pressure returns to normal, the sealing element 35 closes, cutting off the gas passage and maintaining the stability of the system.

[0037] See Figure 7 A compression spring 36 is provided between the sealing element 35 and the connecting pipe 34, ensuring that the sealing element 35 remains closed when no external force is applied, preventing accidental gas flow and improving system safety. The function of the compression spring 36 is to keep the sealing element 35 closed unless subjected to sufficient external force. The compression spring 36 is located on the side of the sealing element 35 near the pressure-relieving shoulder pad, and the compression spring 36 and the connecting rope 25 are located at the same end of the sealing element 35. The compression spring 36 controls the disconnection of the connecting pipe 34, and the connecting rope 25 controls the connection of the connecting pipe 34. The connecting rope 25 is used to pull the sealing element 35 open, thereby allowing gas to flow from the handle airbag 32 into the pressure-relieving shoulder pad. This design incorporates mechanical automation principles, enabling dynamic adjustment of the system state according to actual pressure conditions. When the connecting slider 29 moves due to pressure, it tightens the connecting rope 25, thereby pulling the sealing element 35 to overcome the elasticity of the compression spring 36, causing the sealing element 35 to leave its original position and opening the connecting pipe 34 channel. Once the pressure returns to normal, the connecting rope 25 loosens, the compression spring 36 pushes the seal 35 back to its original position, closes the connector 34 channel, and restores the system to its initial state.

[0038] See Figure 2 The pressure-reducing shoulder pads are divided into left and right shoulder pads based on the left and right shoulder straps 11. The left shoulder pad and the handle pad 3, as well as the right shoulder pad and the handle pad 3, are connected and controlled separately; this means that each shoulder pad has its own independent connecting pipe 34, sealing element 35, and related control components. The internal air pressure of the handle airbag 32 is greater than the internal air pressure of the shock-absorbing airbag 22, allowing gas to flow from the handle airbag 32 to the shock-absorbing airbag 22 when needed. When the left shoulder pad and the When the right shoulder pad is under normal force (i.e., the pressure on the left and right shoulder pads is roughly equal). Both the connecting pipe 34 of the left shoulder pad and the connecting pipe 34 of the right shoulder pad are disconnected. At this time, there is no gas exchange between the handle airbag 32 and the shock-absorbing airbag 22, and their respective air pressures remain constant. When the left and right shoulder pads are subjected to uneven force, the connecting pipe 34 on the pressure-reducing shoulder pad on the side with greater force is opened (the connecting slider 29 on this side of the shoulder pad will move due to the force, and through the connecting rope 25, it will pull the corresponding sealing element 35 to overcome the resistance of the compression spring 36, so that the connecting pipe 34 is opened), allowing the internal gas of the handle airbag 32 to move into the shock-absorbing airbag 22, ensuring that the left and right shoulder pads are subjected to even force. Example

[0039] This embodiment discloses a backpack 1 that applies the pressure-relieving shoulder pad 2 described in Embodiment 1, as detailed below:

[0040] When the backpack 1 is in normal use, the shock-absorbing airbag 22 and the support member 23 ensure the force balance of the pressure-relieving shoulder pad 2; when subjected to abnormal pressure, the first slider 24 and the connecting rope 25 can work together with all the support members 23 to balance the pressure on the pressure-relieving shoulder pad 2; when it is necessary to adjust the force balance of the pressure-relieving shoulder pad 2, the sliding stroke of the adjusting slider 26 in the shock-absorbing airbag 22 can be controlled by the adjusting component 28 to achieve the best force balance state. Example

[0041] This embodiment discloses a backpack 1 that applies the pressure-reducing shoulder pad 2 described in Embodiment 2. This backpack 1 provides excellent pressure distribution during normal use and automatically adjusts to compensate for uneven pressure, ensuring user comfort and safety. Details are as follows:

[0042] When the backpack 1 is in normal use, the shock-absorbing airbag 22 and the support member 23 ensure the balanced force distribution of the pressure-reducing shoulder pad 2. The shock-absorbing airbag 22 adopts a flat design and has good elasticity and adaptability, which can quickly respond to pressure changes and provide an effective cushioning effect. The support member 23 is arranged in a ring shape with an opening, and the opening side is close to the shoulder strap 11 and is fixed to the side wall of the shock-absorbing airbag 22. The support members 23 are evenly distributed along the length of the shock-absorbing airbag 22. When pressure is applied, they can maintain the stability of the airbag shape and prevent excessive deformation. When it is necessary to adjust the force balance of the pressure-reducing shoulder pad 2, the sliding stroke of the adjusting slider 26 in the shock-absorbing airbag 22 can be controlled by the adjusting component 28 to achieve the best force balance. The adjusting component 28 includes a connector 281, an adjusting member 282 rotatably mounted on the shoulder pad body 21, and a connecting member 283 (gear and rack) for transmission between the adjusting member 282 and the connector 281. By rotating the adjustment component 282, the user can precisely control the position of the adjustment slider 26, thereby adjusting the tension of the connecting rope 25 to achieve optimal pressure distribution. When the backpack is subjected to uneven force or one side of the pressure-reducing shoulder pad is subjected to abnormal pressure, the connecting pipe 34 on that side will be opened under the pull of the connecting rope 25, allowing the gas in the handle airbag 32 to flow into the shock-absorbing airbag 22, thereby balancing the pressure on both sides.

[0043] Furthermore, as is common knowledge in this industry, the shoulder strap 11 and handle strap 12 mentioned above are common knowledge; therefore, their principles and structures will not be elaborated upon further.

[0044] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A decompression shoulder pad for a shoulder strap of a backpack, the backpack having a shoulder strap, characterized in that: the decompression shoulder pad comprises a shoulder pad body connected to the shoulder strap, the shoulder pad body having a shock-absorbing air bag, the length direction of the shock-absorbing air bag being the same as the length direction of the shoulder pad body, and the end face of the shock-absorbing air bag being flat in the width direction of the shock-absorbing air bag; the shock-absorbing air bag is provided with a support, the length direction of the support being the same as the width direction of the shock-absorbing air bag, and the support being equidistantly arranged in the shock-absorbing air bag along the length direction of the shock-absorbing air bag; when the shock-absorbing air bag is subjected to pressure, the support keeps the shape of the shock-absorbing air bag stable, ensuring that the decompression shoulder pad is balanced in force; the support is annular in shape, one side of the support close to the shoulder strap is open, and the other side of the support away from the shoulder strap is fixed to the side wall of the shock-absorbing air bag; first sliders are slidingly arranged on both sides of the opening of the support, and the first sliders are connected by a connecting rope; when the shock-absorbing air bag is subjected to abnormal pressure, the first sliders and the connecting rope jointly control all the supports, ensuring that the decompression shoulder pad is balanced in force; one end of the shock-absorbing air bag in the length direction of the shock-absorbing air bag is provided with an adjusting slider, the adjusting slider is slidingly and sealingly arranged on the shock-absorbing air bag, the adjusting slider is connected to the connecting rope, and the adjusting slider and the first sliders are provided with limiters at both ends in the length direction of the shock-absorbing air bag; the limiters constrain the sliding stroke of the first sliders on the support and the sliding stroke of the adjusting slider on the shock-absorbing air bag; when the shock-absorbing air bag is subjected to abnormal pressure, the sliding stroke of the adjusting slider inside the shock-absorbing air bag is controlled to adjust the tightness of the connecting rope, improving the uniformity of the force of the decompression shoulder pad; the decompression shoulder pad comprises a handle pad for connecting the decompression shoulder pad on the left and right shoulder straps, the handle pad is composed of a handle body and a handle air bag, the handle body is connected to a handle strap, and the handle air bag is provided with a connector connected to the decompression shoulder pad; the adjusting slider is located at one end of the decompression shoulder pad away from the handle pad, the other end of the decompression shoulder pad close to the handle pad is provided with a connecting slider, the connecting slider and the decompression shoulder pad are connected in a sliding and sealing manner, the shock-absorbing air bag is connected to the connector through a connecting pipe from the end where the connecting slider is located, the connecting pipe is provided with a sealing member for controlling the opening and closing, and the sealing member is connected to the connecting rope and the connecting slider; when the shock-absorbing air bag is subjected to abnormal pressure, the connecting rope pulls the sealing member to connect the connector and the connecting pipe, so that the gas in the handle air bag enters the decompression shoulder pad, ensuring that the decompression shoulder pad is balanced in force; the sealing member and the connecting pipe are provided with a compression spring, the compression spring is located on one side of the sealing member close to the decompression shoulder pad, and the compression spring and the connecting rope are arranged at the same end of the sealing member. The compression spring is used to control the disconnection of the adapter pipe, and the connecting rope is used to control the conduction of the adapter pipe.

2. The decompression shoulder pad of claim 1, wherein: the shoulder pad body and the shock absorption air bag are detachably connected to facilitate replacement of the shock absorption air bag; and the shoulder pad body and the adjusting slider are provided with an adjusting component at one end adjacent to the adjusting slider, and the adjusting component is connected with the adjusting slider and used to control the sliding stroke of the adjusting slider inside the shock absorption air bag.

3. The decompression shoulder pad of claim 2, wherein: the adjusting component comprises a connecting head connected with the adjusting slider, an adjusting member rotatably arranged on the shoulder pad body, and a connecting member arranged between the adjusting member and the connecting head and used for transmission between the adjusting member and the connecting head; and the adjusting member and the connecting member are a gear and a rack.

4. The decompression shoulder pad of claim 1, wherein: the decompression shoulder pad is divided into a left shoulder pad and a right shoulder pad according to left and right shoulder straps, and the left shoulder pad and the handle pad and the right shoulder pad and the handle pad are separately connected and controlled; and the internal air pressure of the handle air bag is greater than that of the shock absorption air bag. When the left shoulder pad and the right shoulder pad are normally stressed, the adapter pipes of the left shoulder pad and the right shoulder pad are in a disconnected state. When the left shoulder pad and the right shoulder pad are unevenly stressed, the adapter pipe on the decompression shoulder pad on the side with greater stress is in a connected state, so that the internal gas of the handle air bag moves into the shock absorption air bag, ensuring that the left shoulder pad and the right shoulder pad are evenly stressed.

5. A double-shoulder backpack using the decompression shoulder pad of claim 3, wherein: when the double-shoulder backpack is normally used, the shock absorption air bag and the support member ensure that the decompression shoulder pad is evenly stressed; when the double-shoulder backpack is abnormally stressed, the first slider and the connecting rope can jointly balance the stress of the decompression shoulder pad with all the support members; when the decompression shoulder pad needs to be adjusted to be evenly stressed, the adjusting component can be used to control the sliding stroke of the adjusting slider in the shock absorption air bag to achieve an optimal state of even stress.

6. A double-shoulder backpack using the decompression shoulder pad of claim 4, wherein: when the double-shoulder backpack is normally used, the shock absorption air bag and the support member ensure that the decompression shoulder pad is evenly stressed; when the decompression shoulder pad needs to be adjusted to be evenly stressed, the adjusting component can be used to control the sliding stroke of the adjusting slider in the shock absorption air bag to achieve an optimal state of even stress; when the double-shoulder backpack is unevenly stressed and one side of the decompression shoulder pad is abnormally stressed, the adapter pipe on the side is in a connected state under the pulling of the connecting rope, so that the gas in the handle air bag flows into the shock absorption air bag, thereby balancing the stress on both sides. ​ ​ ​ ​ ​ ​

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