Decompression shoulder pad for knapsack

Abstract

The invention discloses a pressure-reducing shoulder pad for a knapsack, and belongs to the field of knapsacks, the pressure-reducing shoulder pad comprises a bottom pad, a pressure-reducing pad arranged in the bottom pad, a wear-resistant pad fixedly arranged at the upper end of the bottom pad, and fixing structures symmetrically and fixedly arranged on the wear-resistant pad and used for fixing the device on shoulder straps of the knapsack; the fixing structure comprises a first toothed plate fixedly arranged at the upper end of the wear-resisting pad, a second toothed plate hinged to the first toothed plate and connected with the first toothed plate in a meshed mode, and a locking piece arranged at the movable end of the first toothed plate and the movable end of the second toothed plate. Through the occlusion of the first toothed plate and the second toothed plate and the locking effect of the locking piece, the position of the pressure-reducing shoulder pad on the shoulder strap of the backpack is ensured to be stable, and the pressure-reducing shoulder pad is not easy to slide or deviate. According to the design, the position change of the pressure-reducing shoulder pad in the using process can be reduced or eliminated, continuous and uniform contact between the pressure-reducing shoulder pad and the shoulders of a user is ensured, and therefore the comfort and efficiency of carrying are improved.

Description

Technical Field

[0001] The present application relates to the technical field of backpacks, and in particular to a decompression shoulder pad for a backpack. Background Art

[0002] In outdoor adventures, long-distance travel or daily commuting, backpacks are important tools for carrying items, and their comfort and functionality are crucial to users. In order to reduce the pressure of backpacks on users' shoulders, a variety of pressure-relieving shoulder pad designs have appeared on the market. These pressure-relieving shoulder pads are designed to improve the carrying experience by dispersing weight, improving breathability or optimizing contact area.

[0003] At present, a common way to fix the decompression shoulder pad relies on the combination of the fur and hook surfaces of Velcro (i.e., hook and loop). Specifically, the Velcro fur and hook surfaces are provided on both sides of the decompression shoulder pad, and the two are attached to form a loop, which tightly wraps the decompression shoulder pad and fixes it on the backpack strap. The backpack shoulder strap is located between the loop formed by Velcro and the decompression shoulder pad, ensuring that the shoulder pad will not slip off directly.

[0004] However, this fixing method has exposed some problems in practical application. First, because the Velcro fleece and hook surface do not directly act between the backpack shoulder straps, but form an independent loop structure, this causes the decompression shoulder pad to have a certain degree of mobility on the backpack shoulder straps. When the user carries a backpack, especially during dynamic activities such as walking or running, the decompression shoulder pad is prone to position shift. This position change not only reduces the effective contact area between the decompression shoulder pad and the user's shoulder, but may also change the originally designed pressure distribution, thereby reducing the expected effect of the decompression shoulder pad.

[0005] In addition, long-term use of Velcro may also face the risk of weakening of adhesion, falling off or damage, further affecting the stability and durability of the decompression shoulder pad.

[0006] Therefore, the present application provides a decompression shoulder pad for a backpack to solve the above problems. Summary of the invention

[0007] The present application provides a decompression shoulder pad for a backpack, aiming to solve the problem mentioned in the background art that the Velcro fleece surface and hook surface do not directly act between the backpack shoulder straps, but form an independent loop structure, which causes the decompression shoulder pad to have a certain degree of mobility on the backpack shoulder straps. When the user carries the backpack, especially during dynamic activities such as walking or running, the decompression shoulder pad is prone to position displacement. This position change not only reduces the effective contact area between the decompression shoulder pad and the user's shoulder, but may also change the originally designed pressure distribution, thereby reducing the expected effect of the decompression shoulder pad.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a decompression shoulder pad for a backpack rucksack, comprising a base pad, a decompression pad arranged inside the base pad, a wear-resistant pad fixedly arranged at the upper end of the base pad, and a fixing structure symmetrically fixedly arranged on the wear-resistant pad for fixing the device on the shoulder strap of the backpack; the fixing structure comprises a first tooth plate fixedly arranged at the upper end of the wear-resistant pad, a second tooth plate hingedly arranged on the first tooth plate and meshingly connected to the first tooth plate, and a locking member arranged at the movable ends of the first tooth plate and the second tooth plate; the locking member comprises a fixed block fixedly arranged at the upper end of the first tooth plate, a plug rod inserted on the fixed block and fixedly connected to the second tooth plate, a T-bar inserted on the plug rod, a first spring arranged in the plug rod and between the lower end of the T-bar, a guide groove opened on the plug rod, a locking ball movably arranged in the guide groove and in conflict with the T-bar, and a plurality of locking grooves opened in the fixed block along the vertical direction and adapted to the locking ball; and also comprises an annular groove opened on the T-bar. When the decompression shoulder pad is fixed on the shoulder strap of the backpack, the T-bar is first pressed downward by overcoming the elastic force of the first spring, so that the first spring is squeezed and stores force. When the position of the T-bar cannot be moved, the annular groove just corresponds to the locking ball. Then the second tooth plate is moved upward, and the locking ball moves toward the inside of the guide groove under the squeezing of the locking groove, so that the insertion rod can be easily moved out of the interior of the fixed block. Then the squeezing of the T-bar is released, and the T-bar and the locking ball are reset by the first spring. Then open the second tooth plate, and then place the backpack shoulder strap between the first tooth plate and the second tooth plate, and then close the second tooth plate so that the bottom of the insertion rod is inserted into the fixed block, and then press the T-bar downward to overcome the elastic force of the first spring, so that the first spring is squeezed and accumulates force. When the position of the T-bar cannot move, the annular groove just corresponds to the locking ball, and then continue to press the second tooth plate downward, and the locking ball moves toward the inside of the guide groove under the pressure of the inner wall of the fixed block and the locking groove, and then it is convenient to continue to insert the insertion rod into the inside of the fixed block until the second tooth plate and the first tooth plate are stably engaged with the backpack shoulder strap, and the squeezing of the T-bar is released, and the T-bar is pushed upward by the first spring, and the T-bar squeezes the locking ball to move outward until the locking ball is inserted into the inside of the corresponding locking groove and stops.

[0009] Preferably, in order to prevent the T-bar from moving out of the insertion rod: a limit groove for the lifting and lowering movement of the T-bar is provided inside the insertion rod, and the limit groove is connected to the guide groove. When the T-bar moves to the bottom of the limit groove, the annular groove corresponds to the locking ball, which facilitates the locking ball to move out of the locking groove; when the T-bar moves to the top of the limit groove, the bottom of the T-bar contacts the locking ball, ensuring that the locking ball is stably placed inside the locking groove.

[0010] Preferably, in order to facilitate pressing the T-bar: a groove is provided at the upper end of the second tooth plate, and a lifting plate fixedly connected to the T-bar is movably embedded in the groove. The lifting plate can increase the contact area between the hand and the T-bar, reducing the discomfort of the T-bar on the hand.

[0011] Preferably, in order to ensure the air permeability of the base pad: the base pad adopts a three-dimensional mesh structure and is made of materials with good air permeability such as ice-cool yarn, tencel and linen yarn, which can effectively improve the air permeability of the shoulder pad and reduce the dampness and stuffiness of the back.

[0012] Preferably, in order to ensure the elasticity of the pressure relief pad: the pressure relief pad is made of EVA material. EVA material has excellent elastic recovery ability, and can quickly restore its original shape even after being compressed for a long time, ensuring the long-lasting elasticity of the pressure relief pad. In addition, EVA material also has good tear resistance and wear resistance, making the pressure relief pad more durable.

[0013] Preferably, in order to ensure the wear resistance of the wear-resistant pad, the wear-resistant pad is made of high-quality encrypted soft mesh and light plastic fabric, etc. This can extend the service life of the shoulder pad, reduce wear and damage, and increase the friction between the wear-resistant pad and the backpack shoulder strap, further preventing the decompression shoulder pad and the backpack shoulder strap from changing position.

[0014] Preferably, in order to facilitate the use of the decompression shoulder pad, the decompression shoulder pad can massage the user's shoulders: a plurality of massage structures are fixedly arranged side by side at the lower end of the base pad, and the massage structure includes an airbag pad, a plurality of protrusions fixedly connected to the lower end of the airbag pad, and a second spring arranged in the airbag pad. Through the setting of the massage structure, the decompression shoulder pad can automatically massage the shoulders when in use, effectively relieve shoulder and neck fatigue and tension, and improve the user's carrying comfort. The decompression shoulder pad with integrated massage function not only has the traditional decompression effect, but also can provide users with additional massage enjoyment, improving the overall carrying experience.

[0015] Preferably, in order to facilitate the adjustment of the length of the decompression shoulder strap: the base pad includes a first shoulder pad and a second shoulder pad, the second shoulder pad is fixedly connected to a fixing structure at one end away from the first shoulder pad, the first shoulder pad and the second shoulder pad are fixedly connected by a locking structure, and the locking structure includes a magnetic sleeve fixedly embedded in the first shoulder pad, a magnetic plate inserted in the magnetic sleeve and fixedly connected to the second shoulder pad, and a locking member arranged on the magnetic plate for fixing the magnetic plate to the magnetic sleeve. Through the design of the locking structure, the user can easily adjust the length of the base pad to achieve personalized installation and meet the carrying needs of different users in different scenarios. The design of the locking structure is concise and clear, and the user only needs simple operations to complete the adjustment and fixation of the length without the need for complicated tools or steps.

[0016] Preferably, the locking member includes a locking rod plugged into the magnetic plate, a limiting slide groove provided in the magnetic plate, a limiting slide plate movably provided in the limiting slide groove and fixedly connected to the lower end of the locking rod, a third spring provided in the limiting slide groove and between the lower end of the limiting slide plate, and a slot provided in the magnetic sleeve for the locking rod to be plugged in. Through the design of the locking structure, the user can conveniently adjust the length of the base pad, and realize quick locking and disassembly through the cooperation of the locking rod and the slot, without the need for complicated tools or steps.

[0017] The present application ensures that the decompression shoulder pad is stably positioned on the backpack shoulder strap and is not prone to sliding or shifting by means of the engagement of the first tooth plate and the second tooth plate and the locking action of the locking member. This design should be able to reduce or eliminate the position change of the decompression shoulder pad during use, ensuring its continuous and uniform contact with the user's shoulders, thereby improving the comfort and efficiency of carrying. The installation and removal of the decompression shoulder pad can be completed by simple pressing and moving operations, which is convenient and quick.

[0018] Through the setting of the massage structure, the decompression shoulder pad can automatically massage the shoulders when in use, effectively relieve shoulder and neck fatigue and tension, and improve the user's carrying comfort. The massage operation helps promote blood circulation, accelerate the relaxation and recovery of shoulder muscles, and reduce the discomfort caused by long-term carrying. The decompression shoulder pad with integrated massage function not only has the traditional decompression effect, but also provides users with additional massage enjoyment, improving the overall carrying experience.

[0019] Through the design of the locking structure of this application, users can easily adjust the length of the base pad to achieve personalized installation and meet the carrying needs of different users in different scenarios. The locking structure uses a combination of magnetic force and locking parts to ensure the stability and safety of the connection and avoid loosening or falling off during use. The design of the locking structure is simple and clear, and users can adjust and fix the length with simple operations without complicated tools or steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of a pressure relief shoulder pad for a backpack; Figure 2 for Figure 1 A schematic diagram of the structure of the bottom end of a decompression shoulder pad for a backpack; Figure 3 for Figure 1 Structural schematic diagram of the fixed structure; Figure 4 is a structural cross-sectional view of a locking member; Figure 5 is a structural diagram of a massage structure; Figure 6for Figure 1 The structural side section diagram in ; Figure 7 for Figure 6 Schematic diagram of the structure enlarged at point A in the middle.

[0021] In the figure: 1. Bottom pad; 11. First shoulder pad; 12. Second shoulder pad; 2. Decompression pad; 3. Wear-resistant pad; 4. Fixed structure; 41. First tooth plate; 42. Second tooth plate; 421. Groove; 43. Locking piece; 431. Fixed block; 432. Insert rod; 4321. Limiting groove; 433. T-bar; 4331. Lifting plate; 434. First spring; 435. Guide groove; 436. Locking ball; 437. Locking groove; 438. Annular groove; 5. Massage structure; 51. Airbag pad; 52. Bump; 53. Second spring; 6. Locking structure; 61. Magnetic sleeve; 62. Magnetic plate; 63. Locking piece; 631. Locking rod; 632. Limiting slide groove; 633. Limiting slide plate; 634. Third spring; 635. Slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] Example 1 This embodiment provides a decompression shoulder pad for a backpack. Figure 1-7 As shown, the decompression shoulder pad includes a base pad 1, a decompression pad 2 arranged inside the base pad 1, a wear-resistant pad 3 fixedly arranged on the upper end of the base pad 1, and a fixing structure 4 symmetrically fixedly arranged on the wear-resistant pad 3 for fixing the device on the shoulder strap of the backpack; the design of the base pad 1 and the decompression pad 2 provides a good carrying feeling, effectively disperses the weight of the backpack, and reduces the pressure on the user's shoulders. The use of the wear-resistant pad 3 improves the durability of the decompression shoulder pad and extends its service life.

[0024] The fixing structure 4 includes a first tooth plate 41 fixedly arranged at the upper end of the wear-resistant pad 3, a second tooth plate 42 hingedly arranged on the first tooth plate 41 and meshingly connected with the first tooth plate 41, and a locking member 43 arranged at the movable ends of the first tooth plate 41 and the second tooth plate 42; the locking member 43 includes a fixing block 431 fixedly arranged at the upper end of the first tooth plate 41, a plug rod 432 inserted on the fixing block 431 and fixedly connected to the second tooth plate 42, a T-shaped rod 433 inserted on the plug rod 432, a first spring 434 arranged in the plug rod 432 and between the lower end of the T-shaped rod 433, a guide groove 435 opened on the plug rod 432, a locking ball 436 movably arranged in the guide groove 435 and in conflict with the T-shaped rod 433, and a plurality of locking grooves 437 opened in the fixing block 431 along the vertical direction and adapted to the locking ball 436; and also includes an annular groove 438 opened on the T-shaped rod 433. The engagement of the first tooth plate 41 and the second tooth plate 42 and the locking action of the locking member 43 ensure that the decompression shoulder pad is stably positioned on the shoulder strap of the backpack and is not prone to sliding or shifting. This design should be able to reduce or eliminate the position change of the decompression shoulder pad during use, ensuring its continuous and uniform contact with the user's shoulders, thereby improving the comfort and efficiency of carrying. The installation and removal of the decompression shoulder pad can be completed by simple pressing and moving operations, which is convenient and quick.

[0025] When the decompression shoulder pad is fixed on the shoulder strap of the backpack, the T-bar 433 is first pressed downward by overcoming the elastic force of the first spring 434, so that the first spring 434 is squeezed and stores force. When the position of the T-bar 433 cannot be moved, the annular groove 438 just corresponds to the locking ball 436, and then the second tooth plate 42 is moved upward. Under the pressure of the locking groove 437, the locking ball 436 moves toward the inside of the guide groove 435, and then the insertion rod 432 can be easily moved out of the interior of the fixing block 431, and then the pressure on the T-bar 433 is released, and the T-bar 433 and the locking ball 436 are reset by the first spring 434. Then, the second tooth plate 42 is opened, and the backpack shoulder strap is placed between the first tooth plate 41 and the second tooth plate 42. Then, the second tooth plate 42 is closed, so that the bottom of the insertion rod 432 is inserted into the fixing block 431. Then, the T-shaped rod 433 is pressed downward to overcome the elastic force of the first spring 434, so that the first spring 434 is squeezed and accumulates force. When the position of the T-shaped rod 433 cannot move, the annular groove 438 just corresponds to the locking ball 436. Then, the second tooth plate 42 is pressed downward to fix the fixing block 431. The locking ball 436 is squeezed by the inner wall of the guide groove 435 by the inner wall of the guide groove 435, and then the insertion rod 432 can be conveniently inserted into the interior of the fixing block 431 until the second tooth plate 42 and the first tooth plate 41 are stably engaged with the shoulder strap of the backpack, and the squeezing of the T-bar 433 is released. The T-bar 433 is pushed upward by the first spring 434, and the T-bar 433 squeezes the locking ball 436 to move outward until the locking ball 436 is inserted into the corresponding locking groove 437 and stops.

[0026] Specifically, in order to prevent the T-bar 433 from moving out of the insertion rod 432: a limit groove 4321 for the T-bar 433 to move up and down is provided inside the insertion rod 432, and the limit groove 4321 is connected to the guide groove 435. When the T-bar 433 moves to the bottom of the limit groove 4321, the annular groove 438 corresponds to the locking ball 436, which facilitates the locking ball 436 to move out of the locking groove 437; when the T-bar 433 moves to the top of the limit groove 4321, the bottom of the T-bar 433 conflicts with the locking ball 436, ensuring that the locking ball 436 is stably placed inside the locking groove 437.

[0027] Specifically, in order to facilitate pressing the T-bar 433: a groove 421 is provided at the upper end of the second tooth plate 42, and a lifting plate 4331 fixedly connected to the T-bar 433 is movably embedded in the groove 421. The lifting plate 4331 can increase the contact area between the hand and the T-bar 433, reducing the discomfort caused by the T-bar 433 to the hand.

[0028] In order to ensure the breathability of the base pad 1: the base pad 1 adopts a three-dimensional mesh structure and is made of materials with good breathability such as ice-cool yarn, Tencel and linen yarn. It can effectively improve the breathability of the shoulder pad and reduce the dampness and stuffiness of the back. When the user carries a backpack, the base pad 1 is in close contact with the user's back. Since the base pad 1 adopts a three-dimensional mesh structure and materials with good breathability, air can smoothly pass through the mesh structure to form effective air convection. This not only helps to discharge the heat and moisture generated by the back, but also reduces the dampness and stuffiness of the back and improves the user's comfort. At the same time, materials such as ice-cool yarn, Tencel and linen yarn have good moisture absorption and perspiration properties, which can quickly absorb and discharge sweat generated by the back and keep the back dry. The combination of this material property and the mesh structure enables the base pad 1 to provide good support while effectively improving the microclimate environment of the back.

[0029] To ensure the elasticity of the decompression pad 2: the decompression pad 2 is made of EVA material. EVA material has excellent elastic recovery ability, and can quickly restore its original shape even after being under pressure for a long time, ensuring the long-lasting elasticity of the decompression pad 2. In addition, the EVA material also has good tear strength and wear resistance, making the decompression pad 2 more durable. When the user carries a backpack, the decompression pad 2 made of EVA material can respond quickly and adapt to the shape and weight distribution of the body. Its high elasticity allows the decompression pad 2 to adjust its shape according to the movement and changes of the body, thereby maintaining a close fit with the body. This fit not only improves comfort, but also helps to reduce the pressure of the backpack shoulder straps on various parts of the body, promote blood circulation, and relieve fatigue.

[0030] In order to ensure the wear resistance of the wear-resistant pad 3: the wear-resistant pad 3 is made of high-quality encrypted soft mesh and glossy plastic fabric. It can extend the service life of the shoulder pad and reduce wear and damage; at the same time, it increases the friction between the wear-resistant pad 3 and the backpack shoulder straps, and further prevents the decompression shoulder pad and the backpack shoulder straps from changing positions. When the user carries a backpack, the wear-resistant pad 3 is located between the backpack shoulder straps and the shoulders, playing a protective and buffering role. The high-quality encrypted soft mesh and glossy plastic fabric work together to resist the friction and wear between the backpack shoulder straps and the shoulders. The encrypted mesh increases the strength and durability of the wear-resistant pad 3, while the glossy plastic fabric enhances the friction between the backpack shoulder straps and prevents the displacement of the decompression shoulder pad. This design not only extends the service life of the shoulder pad, but also improves the stability and comfort of carrying.

[0031] Example 2 Different from the first embodiment, in order to facilitate the use of the decompression shoulder pad, the decompression shoulder pad can massage the user's shoulders: the lower end of the base pad 1 is fixedly provided with a plurality of massage structures 5 in parallel, and the massage structure 5 includes an airbag pad 51, a plurality of convex points 52 fixedly connected to the lower end of the airbag pad 51, and a second spring 53 arranged in the airbag pad 51. Through the setting of the massage structure 5, the decompression shoulder pad can automatically massage the shoulder when in use, effectively relieve the fatigue and tension of the shoulder and neck, and improve the user's carrying comfort. The massage operation helps to promote blood circulation, accelerate the relaxation and recovery of the shoulder muscles, and reduce the discomfort caused by long-term carrying. The decompression shoulder pad with integrated massage function not only has the traditional decompression effect, but also provides the user with additional massage enjoyment, and improves the overall carrying experience. When using the decompression shoulder pad, the weight of the backpack and the user's action bump force act together on the base pad 1 and the massage structure 5. As the pressure of the backpack changes, the airbag pad 51 switches back and forth between compression and expansion under the elastic force of the second spring 53. This switching action causes the protrusions 52 to produce a slight massaging effect on the shoulders, helping to relieve shoulder and neck fatigue and tension.

[0032] Example 3 Different from Example 1, in order to facilitate the adjustment of the length of the decompression shoulder strap: the base pad 1 includes a first shoulder pad 11 and a second shoulder pad 12, and the second shoulder pad 12 is fixedly connected to a fixing structure 4 at one end away from the first shoulder pad 11, and the first shoulder pad 11 and the second shoulder pad 12 are fixedly connected by a locking structure 6, and the locking structure 6 includes a magnetic sleeve 61 fixedly embedded in the first shoulder pad 11, a magnetic plate 62 inserted in the magnetic sleeve 61 and fixedly connected to the second shoulder pad 12, and a locking member 63 arranged on the magnetic plate 62 for fixing the magnetic plate 62 on the magnetic sleeve 61. Through the design of the locking structure 6, the user can easily adjust the length of the base pad 1, realize personalized installation, and meet the carrying needs of different users in different scenarios. The locking structure 6 adopts a combination of magnetic force and a locking member 63 to ensure the stability and safety of the connection and avoid loosening or falling off during use. The design of the locking structure 6 is concise and clear, and the user only needs simple operation to complete the adjustment and fixation of the length without complicated tools or steps. When using the decompression shoulder pad, the user can change the length of the base pad 1 by adjusting the locking structure 6 according to personal needs and carrying scenarios. When only the first shoulder pad 11 is needed, the locking member 63 is unlocked so that the magnetic plate 62 can be easily pulled out of the magnetic sleeve 61. When the first shoulder pad 11 and the second shoulder pad 12 are needed, the magnetic plate 62 is reinserted into the magnetic sleeve 61 and fixed by the locking member 63 to ensure the stability and safety of the connection.

[0033] Specifically, the locking member 63 includes a locking rod 631 plugged into the magnetic plate 62, a limiting slide groove 632 provided in the magnetic plate 62, a limiting slide plate 633 movably provided in the limiting slide groove 632 and fixedly connected to the lower end of the locking rod 631, a third spring 634 provided between the limiting slide groove 632 and the lower end of the limiting slide plate 633, and a slot 635 provided on the magnetic sleeve 61 for the locking rod 631 to be plugged in. Through the design of the locking structure 6, the user can conveniently adjust the length of the base pad 1, and realize quick locking and disassembly through the cooperation of the locking rod 631 and the slot 635, without the need for complicated tools or steps. During installation, by pressing down the locking rod 631, the locking rod 631 presses the third spring 634 downward through the limiting slide 633 to make it contract and accumulate force. When the locking rod 631 moves into the limiting slide groove 632, the magnetic plate 62 is then plugged into the magnetic sleeve 61 to complete the position fixation of the first shoulder pad 11 and the second shoulder pad 12. When it is necessary to disassemble, by pressing down the locking rod 631, the locking rod 631 presses the third spring 634 downward through the limiting slide 633 to make it contract and accumulate force. When the locking rod 631 moves from the inside of the slot 635 to the limiting slide groove 632, the magnetic plate 62 can then be pulled out from the inside of the magnetic sleeve 61 to complete the disassembly of the first shoulder pad 11 and the second shoulder pad 12.

[0034] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A decompression shoulder pad for a backpack, comprising a base pad (1), a decompression pad (2) arranged inside the base pad (1), a wear-resistant pad (3) fixedly arranged on the upper end of the base pad (1), and a fixing structure (4) symmetrically fixedly arranged on the wear-resistant pad (3) for fixing the device on the shoulder strap of the backpack; Features: The fixing structure (4) comprises a first tooth plate (41) fixedly arranged at the upper end of the wear-resistant pad (3), a second tooth plate (42) hingedly arranged on the first tooth plate (41) and meshingly connected to the first tooth plate (41), and a locking member (43) arranged at the movable ends of the first tooth plate (41) and the second tooth plate (42); The locking member (43) comprises a fixed block (431) fixedly arranged at the upper end of the first tooth plate (41), an insertion rod (432) inserted on the fixed block (431) and fixedly connected to the second tooth plate (42), a T-shaped rod (433) inserted on the insertion rod (432), a first spring (434) arranged in the insertion rod (432) and between the lower end of the T-shaped rod (433), a guide groove (435) provided on the insertion rod (432), a locking ball (436) movably provided in the guide groove (435) and in contact with the T-shaped rod (433), and a plurality of locking grooves (437) provided in the fixed block (431) along the vertical direction and adapted to the locking ball (436); and also comprises an annular groove (438) provided on the T-shaped rod (433).

2. The decompression shoulder pad for a backpack according to claim 1, characterized in that: A limiting groove (4321) for the lifting and lowering movement of the T-shaped rod (433) is provided inside the insertion rod (432), and the limiting groove (4321) is communicated with the guide groove (435).

3. The decompression shoulder pad for a backpack according to claim 1, characterized in that: A groove (421) is formed at the upper end of the second tooth plate (42), and a lifting plate (4331) fixedly connected to the T-shaped rod (433) is movably embedded in the groove (421).

4. The decompression shoulder pad for a backpack according to claim 1, characterized in that: The base pad (1) adopts a three-dimensional mesh structure and is made of materials with good air permeability such as ice-cool yarn, Tencel and linen yarn.

5. The decompression shoulder pad for a backpack according to claim 1, characterized in that: The pressure relief pad (2) is made of EVA material.

6. The decompression shoulder pad for a backpack according to claim 1, characterized in that: The wear-resistant pad (3) is made of high-quality encrypted soft mesh fabric and glossy plastic fabric.

7. The decompression shoulder pad for a backpack according to claim 1, characterized in that: A plurality of massage structures (5) are fixedly arranged side by side at the lower end of the base cushion (1), the massage structures (5) comprising an airbag cushion (51), a plurality of protrusions (52) fixedly connected to the lower end of the airbag cushion (51), and a second spring (53) arranged in the airbag cushion (51).

8. The decompression shoulder pad for a backpack according to claim 1, characterized in that: The base pad (1) comprises a first shoulder pad (11) and a second shoulder pad (12); one end of the second shoulder pad (12) away from the first shoulder pad (11) is fixedly connected to a fixing structure (4); the first shoulder pad (11) and the second shoulder pad (12) are fixedly connected via a locking structure (6); the locking structure (6) comprises a magnetic sleeve (61) fixedly embedded in the first shoulder pad (11), a magnetic plate (62) inserted in the magnetic sleeve (61) and fixedly connected to the second shoulder pad (12); and a locking member (63) arranged on the magnetic plate (62) for fixing the magnetic plate (62) to the magnetic sleeve (61).

9. The decompression shoulder pad for a backpack according to claim 8, characterized in that: The locking member (63) comprises a locking rod (631) plugged into the magnetic plate (62), a limiting slide groove (632) provided in the magnetic plate (62), a limiting slide plate (633) movably arranged in the limiting slide groove (632) and fixedly connected to the lower end of the locking rod (631), a third spring (634) provided between the limiting slide groove (632) and the lower end of the limiting slide plate (633), and a slot (635) provided on the magnetic sleeve (61) for plugging the locking rod (631).

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