Skiing kneecap protector with impact protection function

Abstract

The invention relates to the technical field of sports protectors, in particular to an impact protection ski knee protection protector which comprises a cover-shaped protection plate, an upper support and a lower support, the upper support is hinged to the upper portion of the cover-shaped protection plate and used for bearing thigh muscle groups, and the lower support is hinged to the lower portion of the cover-shaped protection plate and used for bearing calf muscle groups. The radian curvature of the cover-shaped protection plate is matched with the shape of the knee joint of the human body, supporting protection air bags and elastic pressure guiding mechanisms are symmetrically arranged on the two sides of the coronal plane of the cover-shaped protection plate, and the elastic pressure guiding mechanisms are located on the outer sides of the supporting protection air bags. When the knee joint is bent, the upper support and the lower support generate relative angular displacement and synergistically act on the elastic pressure guiding mechanism to axially compress the elastic pressure guiding mechanism, gas in the elastic pressure guiding mechanism is forced to be conveyed to the supporting protection air bag, the supporting protection air bag is triggered to expand and extend, and the inner side and the outer side of the knee joint are dynamically restrained and supported; and air in the supporting and protecting air bag is pumped back so as to relieve compression constraint on the knee joint.

Description

Technical Field

[0001] The present invention relates to the technical field of sports protective gear, in particular to a ski knee pad for impact protection. Background Art

[0002] Ski anti-collision knee protectors are protective equipment designed specifically for skiing. They mainly use high-density cushioning materials (such as EVA foam, memory foam or honeycomb energy-absorbing structure) with an outer hard protective plate to absorb impact energy in the event of a fall or collision, reducing the risk of injury to knee cartilage, ligaments and joints. They usually use an adjustable strap system to ensure that they fit the knee curve, taking into account both wearing comfort and flexibility. Some products also have breathable fabrics and anti-slip designs. They are suitable for skiers of all levels to protect their knees when sliding, turning or responding to accidental falls on the ski slopes. They are important auxiliary equipment to reduce the probability of knee injuries in skiing.

[0003] In specific skiing events, there are situations where users fall from a high altitude. When users fall from a high altitude, they usually land in a half-squatting position for the purpose of cushioning. Although traditional ski knee pads can provide effective anti-collision protection for the knees, they have poor wrapping strength for the knees and surrounding tissues. When users half-squat when landing from a high altitude, they cannot closely fit the muscle and joint deformation of the knees in the half-squatting state. The impact of landing still makes the knees face the risk of direct impact of a large impact force.

[0004] Furthermore, if traditional protective gear is tightened to fit tightly around the knee, prolonged compression of blood vessels can lead to poor circulation, localized numbness and swelling. This also restricts the natural movement of muscles and ligaments, causing atrophy and relaxation, weakening the knee joint and forcing the body into unfavorable compensatory postures. Therefore, traditional ski knee pads cannot effectively provide the dynamic protection and cushioning the knee requires in high-altitude landings. Summary of the Invention

[0005] The object of the present invention is to provide a ski knee pad for impact protection to solve the technical problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions.

[0007] A ski kneepad for impact protection comprises a cover-shaped guard plate, an upper support and a lower support. The upper support is hingedly mounted above the cover-shaped guard plate to support the thigh muscles, and the lower support is hingedly mounted below the cover-shaped guard plate to support the calf muscles. The curvature of the cover-shaped guard plate is adapted to the shape of the human knee joint. Support and protection airbags and elastic pressure-guiding mechanisms are symmetrically arranged on both sides of the coronal surface of the cover-shaped guard plate, and the elastic pressure-guiding mechanism is located on the outside of the support and protection airbag. The support and protection airbag is connected to the elastic pressure-guiding mechanism on the same side through an air distribution pipeline system to form a linkage air path. When the knee joint is flexed, the upper support The upper support and the lower support produce relative angular displacement, and the two work together to act on the elastic pressure-guiding mechanism to produce axial compression deformation, forcing the gas in the elastic pressure-guiding mechanism to be transported to the support protection airbag through the gas distribution pipeline system, triggering the support protection airbag to expand and extend inward along the coronal surface, forming a constraint support for the inner and outer sides of the knee joint. When the knee joint is extended and reset, the upper support and the lower support have reverse angular displacement to release the compression on the elastic pressure-guiding mechanism, and the elastic pressure-guiding mechanism is elastically reset, so that the gas in the support protection airbag flows back to the elastic pressure-guiding mechanism, and the volume of the support protection airbag shrinks to release the compression constraint on the knee joint.

[0008] Preferably, the upper support includes a pair of upper support guard bars, which are hingedly mounted on both sides above the cover-shaped guard plate, and at least two upper arc-shaped guard bars are fixedly connected between the two upper support guard bars. The structure formed by the upper support guard bars and the upper arc-shaped guard bars is adapted to the thigh above the knee.

[0009] Preferably, the lower support includes a pair of lower support guard bars, which are hingedly installed on both sides of the lower cover-shaped guard plate, and at least two lower arc-shaped guard bars are fixedly connected between the two lower support guard bars. The structural shape formed by the lower support guard bars and the lower arc-shaped guard bars is adapted to the calf muscle group below the knee.

[0010] Preferably, bosses are integrally formed at the four top corners of the front side of the cover-shaped guard plate, and mounting holes are processed on the bosses. A shaft rod is rotatably installed in each mounting hole, and the upper support guard strips and the lower support guard strips are fixed on the four shaft rods one by one.

[0011] Preferably, the elastic pressure-guiding mechanism includes an air cylinder and a spring. The air cylinder is arranged on the side of the cover-shaped guard plate and is connected to the support protection airbag on the same side through the air distribution pipeline system. The middle of the air cylinder is a straight section, and the upper and lower sides of the straight section are corrugated sections. The spring is vertically arranged in the air cylinder, and the top end is fixed to the top wall of the air cylinder, and the bottom end is fixed to the bottom wall of the air cylinder. Resistance blocks are fixed to the top and bottom ends of the air cylinder, and push blocks are fixed to the upper support guard strip and the lower support guard strip. When the knee joint is flexed, the push block and the corresponding resistance block produce surface contact and extrusion, forcing the corrugated section to produce axial compression deformation.

[0012] Preferably, the air distribution pipeline system includes a first conduit and a second conduit, one end of the first conduit is connected to the support protection airbag, and the other end is connected to the second conduit, and the other end of the second conduit is connected to the straight section.

[0013] Preferably, three arc-shaped strips are fixed on both sides of the cover-shaped guard plate from top to bottom, the supporting protective airbag is fixed on the inner side of the three arc-shaped strips on the same side, the ends of the arc-shaped strips in the middle of both sides are fixed with mounting rings through connecting blocks, the air guide cylinder is arranged through the corresponding mounting ring, and the outer wall of the straight section is fixed to the inner wall of the mounting ring.

[0014] Preferably, the ski kneepad protective gear also includes a rear airbag support body, the cross-section of the rear airbag support body is elliptical, and the uppermost and lowermost arc strips on both sides are fixedly connected with elastic connecting belts, and the rear airbag support body is jointly fixed on the ends of the four elastic connecting belts, and the air distribution pipeline system also includes a third conduit and a three-way joint, the first conduit and the second conduit are respectively connected to two of the interfaces of the three-way joint in a one-to-one manner, and the two ends of the rear airbag support body are respectively connected to the third conduit, and the other end of the third conduit is correspondingly connected to the other interface of the three-way joint. When the knee joint is flexed, the rear airbag support body expands radially as the pressure of the air distribution pipeline system increases, forming a three-dimensional support system at the popliteal fossa that cooperates with the upper support, lower support and support protection airbag.

[0015] Preferably, a protective sleeve is fixed to the side of the cover-shaped protective plate that contacts the knee, and a through hole is provided on the protective sleeve and the cover-shaped protective plate.

[0016] Preferably, the upper supporting guard strip and the lower supporting guard strip on one side are connected to the first restraint strap, and the upper supporting guard strip and the lower supporting guard strip on the other side are connected to the second restraint strap. The first restraint strap is fixed with a sub-Velcro, and the second restraint strap is fixed with a mother Velcro that is bonded to the sub-Velcro.

[0017] Compared with the prior art, the present invention has the following beneficial effects.

[0018] When the knee joint flexes, the upper and lower supports produce relative angular displacement and work together to act on the elastic pressure-guiding mechanism to cause axial compression, forcing the gas in the elastic pressure-guiding mechanism to be transported to the support and protection airbag through the gas distribution pipeline system. The support and protection airbag is triggered to expand and extend inward along the coronal surface, forming a dynamic restraint support for the inner and outer sides of the knee joint. It closely fits the muscle and joint deformation during half squat, effectively disperses the impact force of falling from a high altitude, and reduces the risk of ligament injury.

[0019] When the knee joint is extended and reset, the elastic pressure-guiding mechanism resets elastically and draws back the gas in the support and protection airbag through the air distribution pipeline system, causing the volume of the support and protection airbag to shrink and release the compression constraint on the knee joint, avoiding poor blood circulation and local numbness and swelling caused by prolonged squeezing, and solving the problem of blood vessel compression when traditional protective gear is tightly fitted.

[0020] The upper and lower supports are hinged to the cover-shaped guard plates through shafts respectively. The structural shape is adapted to the thigh and calf muscles. The grid-like frame formed by the upper support guard bar and the upper arc-shaped guard bar, and the lower support guard bar and the lower arc-shaped guard bar can expand and contract with the muscle groups, ensuring the support strength without restricting the natural movement of the muscles, thereby reducing the risk of muscle atrophy and relaxation caused by long-term restricted activities.

[0021] When the knee joint is flexed, the rear airbag support body expands radially as the pressure of the air distribution pipeline system increases, and forms a coordinated three-dimensional support system with the upper support, lower support and support protection airbag at the popliteal fossa. The upper and lower supports limit the relative displacement of the thigh and calf, and the support protection airbag restricts the internal and external movements of the knee joint. The rear airbag support body provides rearward cushioning, resisting the impact force of landing in multiple directions, and reducing the concentrated load on the meniscus due to excessive extrusion.

[0022] The cover-like guard fixed on the side in contact with the knee is made of breathable and flexible material, and the cover-like guard and the cover-like guard are provided with through-holes, which not only make buffer space for the patella to avoid excessive squeezing, but also ensure heat dissipation of the knee, solving the problem of stuffiness caused by the tight wrapping of traditional protective gear, and improving wearing comfort and adaptability to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0024] Figure 2 for Figure 1 One of the schematic diagrams of another perspective of the structure shown;

[0025] Figure 3 Schematic diagram of the upper and lower support structures in the present invention;

[0026] Figure 4 This is a schematic diagram of the installation of the upper and lower arc-shaped guard strip structures in the present invention;

[0027] Figure 5 for Figure 4 A schematic diagram of the structure at center A;

[0028] Figure 6 A schematic diagram of the local structure of the cover-shaped guard plate in the present invention;

[0029] Figure 7 for Figure 1 The structure shown omits the schematic diagram of the upper and lower supports;

[0030] Figure 8 for Figure 7 A partial schematic diagram of the structure shown;

[0031] Figure 9 Schematic diagram of the elastic pressure-guiding mechanism structure of the present invention;

[0032] Figure 10 for Figure 9 A schematic cross-sectional view of the structure;

[0033] Figure 11 for Figure 1 The second schematic diagram of the structure shown in another perspective.

[0034] In the figure: 01, first restraint belt; 02, second restraint belt; 03, child Velcro; 04, mother Velcro; 1, cover-shaped guard plate; 101, clearance hole; 11, boss; 12, mounting hole; 13, shaft; 2, upper support; 21, upper support guard strip; 22, upper arc-shaped guard strip; 3, lower support; 31, lower support guard strip; 32, lower arc-shaped guard strip; 4, support and protection airbag; 5, elastic pressure-guiding mechanism; 51, air guide cylinder; 511, straight section; 512, corrugated section; 52, spring; 53, resistance block; 54, push block; 6, air distribution pipeline system; 61, first conduit; 62, second conduit; 63, third conduit; 64, three-way joint; 7, rear airbag support body; 71, elastic connecting belt; 8, sheath; 9, arc-shaped strip; 91, connecting block; 92, mounting ring. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described below with reference to the accompanying drawings.

[0036] Example 1

[0037] See also Figures 1-11 The present invention provides a ski knee pad for impact protection, comprising a cover-shaped guard plate 1, an upper support 2 and a lower support 3. The upper support 2 is installed above the cover-shaped guard plate 1 through a hinged structure. Its geometric shape matches the physiological curve of the front thigh muscle group and is used to support the thigh muscle group. The lower support 3 is installed below the cover-shaped guard plate 1 through a hinged structure. Its curvature design fits the tibialis anterior muscle area on the front side of the calf and is used to stabilize the calf muscle group.

[0038] like Figure 6As shown, the main curvature of the cover-like guard plate 1 is processed according to the three-dimensional curvature of the human knee joint during flexion and extension to adapt to the flexion changes of the knee joint. In addition, a sheath 8 is fixed on the side of the cover-like guard plate 1 that contacts the knee. The sheath 8 is made of breathable and flexible material with a thickness of 6-10mm. It cooperates with the cover-like guard plate 1 to provide anti-collision protection for the knee joint. In addition, the sheath 8 and the cover-like guard plate 1 are jointly provided with a through-hole 101 to make buffer space for the patella to avoid excessive squeezing of the patella. At the same time, the design of the sheath 8 and the hole 101 ensures heat dissipation of the knee and avoids stuffiness caused by tight wrapping of the protective gear.

[0039] Three arc-shaped strips 9 are fixed on both sides of the cover-shaped guard plate 1 from top to bottom, and a supporting protection airbag 4 is fixed on the inner side of the three arc-shaped strips 9 on the same side. The three arc-shaped strips 9 and the supporting protection airbag 4 together form a side support to provide protection for the inner and outer sides of the knee respectively. Elastic pressure-guiding mechanisms 5 are provided on both sides of the coronal surface of the cover-shaped guard plate 1 and on the outside of the supporting protection airbag 4. The supporting protection airbag 4 is connected to the elastic pressure-guiding mechanism 5 on the same side through the air distribution pipeline system 6 to form a linkage air circuit.

[0040] When the knee joint is flexed, the upper support 2 and the lower support 3 produce relative angular displacement, and the two work together to act on the elastic pressure-guiding mechanism 5 to produce axial compression deformation, forcing the gas in the elastic pressure-guiding mechanism 5 to be transported to the support protection airbag 4 through the gas distribution pipeline system 6, triggering the support protection airbag 4 to expand and extend inward along the coronal surface, forming a constraint support for the inner and outer sides of the knee joint. When the knee joint is extended and reset, the upper support 2 and the lower support 3 have reverse angular displacement to release the compression on the elastic pressure-guiding mechanism 5, and the elastic pressure-guiding mechanism 5 is elastically reset, so that the gas in the support protection airbag 4 flows back to the elastic pressure-guiding mechanism 5, and the volume of the support protection airbag 4 shrinks to release the compression constraint on the knee joint.

[0041] The working principle of this embodiment is as follows:

[0042] When the skier's knee joint is bent, such as when landing in a half-squat position, the upper support 2 and the lower support 3 generate relative angular displacement around the hinge point of the cover-shaped guard plate 1. At this time, the upper support 2 and the lower support 3 simultaneously apply axial pressure to the elastic pressure-guiding mechanism 5. After the elastic pressure-guiding mechanism 5 is squeezed, the gas inside it quickly flows to the support and protection airbag 4 through the pipeline system of the gas distribution pipeline system 6, causing the support and protection airbag 4 to expand inward along the coronal surface. The support and protection airbags 4 on both sides form a restraining support similar to a splint, tightly fitting the inner and outer collateral ligament areas of the knee joint to limit abnormal lateral displacement of the knee joint and surrounding tissues.

[0043] When the knee joint is extended and reset, the upper support 2 and the lower support 3 rotate in opposite directions to release the pressure on the elastic pressure-guiding mechanism 5. The elastic pressure-guiding mechanism 5 resets itself by virtue of its own elasticity and draws back the gas in the supporting protection airbag 4 through the air distribution pipeline system 6, causing the volume of the supporting protection airbag 4 to shrink, thereby releasing the pressure on the knee joint and preventing the supporting protection airbag 4 from squeezing the inner and outer sides of the knee joint for a long time, causing blood circulation blockage.

[0044] Different from the static wrapping of traditional protective gear, this application triggers the active expansion of the support protection airbag 4 through the flexion and extension of the knee joint, quickly forming lateral support for the knee and surrounding tissues at the moment of landing from a half-squat, effectively dispersing the impact force when landing from a high altitude, and reducing the risk of damage to the internal and external ligaments of the knee.

[0045] Example 2

[0046] See also Figure 2-Figure 5 The difference between this embodiment and embodiment 1 is that:

[0047] Bosses 11 are integrally formed at the four top corners of the front side of the cover-shaped guard plate 1. The bosses 11 are each processed with a mounting hole 12, and a shaft 13 is rotatably mounted in each mounting hole 12.

[0048] The upper support 2 includes a pair of upper support guards 21, and the lower support 3 includes a pair of lower support guards 31. The upper support guards 21 and the lower support guards 31 are respectively fixed on the four shafts 13 to realize the hinged connection of the upper support guards 21 and the lower support guards 31, wherein at least two upper arc-shaped guards 22 are fixedly connected between the two upper support guards 21, that is, the two upper support guards 21 are laterally fixedly connected through the upper arc-shaped guards 22, and the grid structure formed by the upper support guards 21 and the upper arc-shaped guards 22 is adapted to the direction of the front thigh muscles, and at least two lower arc-shaped guards 32 are fixedly connected between the two lower support guards 31, and the two lower support guards 31 are laterally fixedly connected through the lower arc-shaped guards 32, and the frame structure formed by the lower support guards 31 and the lower arc-shaped guards 32 fits the front calf muscles.

[0049] When the knee joint is flexed, the upper support strip 21 and the lower support strip 31 rotate around the shaft 13 toward the central axis of the cover-shaped guard plate 1. At this time, the upper support strip 21 and the lower support strip 31 produce relative angular displacement, which is used to axially compress the elastic pressure-guiding mechanism 5. Among them, the upper arc-shaped strip 22 and the lower arc-shaped strip 32 not only enhance the structural stiffness of the upper support 2 and the lower support 3, but also can evenly disperse the pressure of the muscle groups during the rotation process to avoid local force concentration.

[0050] In addition, if Figure 11As shown, the restraint system of the protective gear is composed of a first restraint belt 01, a second restraint belt 02, a sub-velcro 03, and a mother Velcro 04. The upper support guard strip 21 and the lower support guard strip 31 on one side are connected to the first restraint belt 01 by stitching, and the upper support guard strip 21 and the lower support guard strip 31 on the other side are connected to the second restraint belt 02 by stitching. The first restraint belt 01 is fixed with a sub-velcro 03, and the second restraint belt 02 is fixed with a mother Velcro 04 that is bonded to the sub-velcro 03. The first restraint belt 01 and the second restraint belt 02 are respectively fixed to the thigh and the lower support 2 and the lower leg by the bonding of the sub-velcro 03 and the mother Velcro 04, ensuring that the rotation axis of the upper support guard strip 21 and the lower support guard strip 31 coincide with the movement axis of the human knee joint, avoiding the displacement of the protective gear and causing support failure. The tightness of the protective gear can be adjusted by the bonding strength of the Velcro to adapt to different users.

[0051] The grid layout of the upper support guard bar 21 and the upper arc-shaped guard bar 22, and the lower support guard bar 31 and the lower arc-shaped guard bar 32 completely fits the muscle contours of the thigh and calf, and can deform with the expansion and contraction of the muscle groups during exercise, which not only ensures the support strength but also does not restrict the natural movement of the muscles. Compared with traditional strap-type protective gear, it can reduce the risk of muscle atrophy. The hinged assembly composed of the boss 11, the mounting hole 12, and the shaft 13 makes the rotation angle of the upper support 2 and the lower support 3 highly matched with the flexion and extension range of the knee joint, avoiding movement jamming due to movement interference, and is especially suitable for frequent turns and landings during skiing.

[0052] Example 3

[0053] See also Figure 7-10 This embodiment further refines the elastic pressure-guiding mechanism 5 and the gas distribution pipeline system 6, and differs from the embodiment 2 in that:

[0054] The elastic pressure-guiding mechanism 5 includes an air cylinder 51 and a spring 52. The air cylinder 51 is a hollow cylindrical structure, which is arranged on the side of the cover-shaped protective plate 1 and is connected to the supporting protection airbag 4 on the same side through the air distribution pipe system 6. The middle of the air cylinder 51 is a straight section 511, and the upper and lower sides of the straight section 511 are both corrugated sections 512. The ends of the arc-shaped strips 9 in the middle of both sides are fixed with mounting rings 92 through connecting blocks 91. The air cylinder 51 is arranged in a through-type in the corresponding mounting ring 92, and the outer wall of the straight section 511 is fixed to the inner wall of the mounting ring 92.

[0055] The spring 52 is vertically arranged in the air guide cylinder 51, and its two ends are respectively connected to the top and bottom walls of the air guide cylinder 51. Resistance blocks 53 are fixed to the top and bottom ends of the air guide cylinder 51, and push blocks 54 are fixed to the sides of the upper support guard strip 21 and the lower support guard strip 31 that are away from each other. When the knee joint is flexed, the push block 54 and the corresponding resistance block 53 produce surface contact and extrusion, forcing the corrugated section 512 to produce axial compression deformation.

[0056] In addition, the air distribution pipeline system 6 includes a first conduit 61 and a second conduit 62 . One end of the first conduit 61 is connected to the support and protection airbag 4 , and the other end is connected to the second conduit 62 . The other end of the second conduit 62 is connected to the straight section 511 .

[0057] When the knee joint is flexed, the upper support guard bar 21 and the lower support guard bar 31 rotate to drive the push block 54 to press the resistance block 53 downward. Relying on the foldable and shrinkable characteristics of the corrugated structure, the corrugated section 512 undergoes axial compression deformation, the internal volume of the air guide cylinder 51 decreases, and the gas is rapidly injected into the support and protection airbag 4 through the first conduit 61 and the second conduit 62. The support and protection airbag 4 expands and compresses the side of the knee. Among them, the spring 52 is compressed when the air guide cylinder 51 is compressed, storing elastic potential energy.

[0058] When the knee joint is extended, the spring 52 releases potential energy to push the air cylinder 51 to reset, forming a negative pressure to draw the gas in the supporting protection airbag 4 back to the air cylinder 51. The fixing effect of the mounting ring 92 on the air cylinder 51 ensures that the air cylinder 51 does not undergo radial displacement during repeated compression, thereby maintaining the sealing of the air path.

[0059] The design of the corrugated section 512 makes the compression amount of the elastic pressure-guiding mechanism 5 and the gas discharge amount linearly related. The greater the flexion angle of the knee joint, the greater the expansion amount of the supporting protection airbag 4, thereby realizing adaptive adjustment of the movement range and support strength. Compared with traditional fixed hardness guards, it is more in line with dynamic movement needs.

[0060] Example 4

[0061] See also Figure 2 、 Figure 3 、 Figure 7 and Figure 8 This embodiment adds a rear airbag support body 7 on the basis of embodiment 3, as follows:

[0062] The cross-section of the rear airbag support body 7 is elliptical, and the uppermost and lowermost arc strips 9 on both sides are fixedly connected with elastic connecting belts 71. The rear airbag support body 7 is fixed together on the ends of the four elastic connecting belts 71. The air distribution pipe system 6 also includes a third conduit 63 and a three-way joint 64. The first conduit 61 and the second conduit 62 are respectively connected to two of the interfaces of the three-way joint 64 in a one-to-one manner. The two ends of the rear airbag support body 7 are respectively connected to the third conduit 63, and the other end of the third conduit 63 is connected to the other interface of the three-way joint 64. When the knee joint is flexed, the rear airbag support body 7 expands radially as the pressure of the air distribution pipe system 6 increases, forming a three-dimensional support system at the popliteal fossa that cooperates with the upper support 2, the lower support 3 and the support protection airbag 4.

[0063] When the knee joint flexes, the gas generated by the compression of the elastic pressure-guiding mechanism 5 is diverted through the three-way connector 64, with one portion causing the support and protection airbag 4 to expand inward and outward, and the other portion causing the rear airbag support body 7 to expand radially in the popliteal fossa. The elliptical cross-section of the rear airbag support body 7 allows it to extend in the anterior-posterior direction when expanded, conforming to the physiological concavity of the popliteal fossa. Together with the muscle support structures of the upper and lower supports 2 and 3, and the lateral support of the support and protection airbag 4, it forms a three-dimensional support system. The upper and lower supports 2 and 3 limit the relative displacement of the thigh and calf, the support and protection airbag 4 constrains the medial and lateral movement of the knee joint, and the rear airbag support body 7 provides a rearward cushioning in the popliteal fossa, jointly resisting the impact force of landing and effectively cushioning the excessive impact on the knee.

[0064] In addition, when the knee joint is flexed, the linked rear airbag support body 7 expands radially, which can generate a forward thrust to help maintain the stability of the knee joint. The resistance generated by the expanded rear airbag support body 7 will guide the femoral condyle to roll and slide more evenly on the tibial platform, avoiding the meniscus from bearing concentrated loads due to excessive squeezing of the joint surface. In addition, the cushioning effect of the rear airbag support body 7 can disperse the pressure when the knee joint is flexed, increase the gap behind the joint, and allow the meniscus to obtain sufficient room for movement during joint movement, effectively reducing the pressure on the meniscus when skiing at high altitude and reducing the risk of wear.

[0065] Among them, the elastic connecting belt 71 is elastic, which makes it convenient to wear the protective gear as a whole. In addition, it allows the rear airbag support body 7 to move slightly when it expands, avoiding hard compression on the popliteal fossa blood vessels.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A ski kneepad for impact protection, characterized by: It comprises a cover-shaped guard plate (1), an upper support (2) and a lower support (3); The upper support (2) is hingedly mounted above the cover-shaped guard plate (1) and is used to support the thigh muscles; the lower support (3) is hingedly mounted below the cover-shaped guard plate (1) and is used to support the calf muscles; The arc curvature of the cover-shaped guard plate (1) is adapted to the shape of the human knee joint, and a supporting and protective airbag (4) and an elastic pressure-guiding mechanism (5) are symmetrically provided on both sides of the coronal surface of the cover-shaped guard plate (1), and the elastic pressure-guiding mechanism (5) is located outside the supporting and protective airbag (4); The supporting and protecting airbag (4) is connected to the elastic pressure-guiding mechanism (5) on the same side via an air distribution pipeline system (6), forming a linkage air circuit; When the knee joint is flexed, the upper support (2) and the lower support (3) generate relative angular displacement, and the two cooperate to act on the elastic pressure-guiding mechanism (5) to generate axial compression deformation, forcing the gas in the elastic pressure-guiding mechanism (5) to be transported to the support and protection airbag (4) through the gas distribution pipeline system (6), triggering the support and protection airbag (4) to expand and extend inward along the coronal surface, thereby forming a restraining support for the inner and outer sides of the knee joint; When the knee joint is extended and reset, the elastic pressure-guiding mechanism (5) is elastically reset and the gas in the supporting and protecting airbag (4) is withdrawn, and the volume of the supporting and protecting airbag (4) is contracted to release the compression constraint on the knee joint.

2. The ski knee pad for impact protection according to claim 1, characterized in that: The upper support (2) includes a pair of upper support strips (21); The two upper support guard strips (21) are respectively hingedly mounted on both sides above the cover-shaped guard plate (1); At least two upper arc-shaped guard strips (22) are fixedly connected between the two upper support guard strips (21); The structure formed by the upper supporting guard strip (21) and the upper arc-shaped guard strip (22) is adapted to the thigh above the knee.

3. The ski kneepad for impact protection according to claim 2, characterized in that: The lower support (3) includes a pair of lower support strips (31); The two lower support guard strips (31) are respectively hingedly mounted on both sides below the cover-shaped guard plate (1); At least two lower arc-shaped guard strips (32) are fixedly connected between the two lower support guard strips (31); The structure formed by the lower support guard strip (31) and the lower arc-shaped guard strip (32) is adapted to the calf muscle group below the knee.

4. The ski knee pad for impact protection according to claim 3, characterized in that: Bosses (11) are integrally formed at the four top corners of the front side of the cover-shaped guard plate (1), and mounting holes (12) are processed on the bosses (11); A shaft (13) is rotatably mounted in each of the mounting holes (12); The upper supporting guard strips (21) and the lower supporting guard strips (31) are fixed on the four shaft rods (13) in a one-to-one correspondence.

5. The ski knee pad for impact protection according to claim 4, characterized in that: The elastic pressure-guiding mechanism (5) comprises an air guide cylinder (51) and a spring (52); The air guide cylinder (51) is arranged on the side of the cover-shaped protective plate (1) and is connected to the supporting protection airbag (4) on the same side through the air distribution pipeline system (6); The middle of the air guide cylinder (51) is a straight section (511), and the upper and lower sides of the straight section (511) are both corrugated sections (512); The spring (52) is vertically arranged in the gas guide cylinder (51), and the top end is fixed to the top wall of the gas guide cylinder (51), and the bottom end is fixed to the bottom wall of the gas guide cylinder (51); The top and bottom ends of the air guide cylinder (51) are both fixed with a resistance block (53); Push blocks (54) are fixed on both the upper support guard strip (21) and the lower support guard strip (31). When the knee joint is flexed, the push blocks (54) and the corresponding abutment blocks (53) generate surface contact and extrusion, forcing the corrugated section (512) to generate axial compression deformation.

6. The ski knee pad for impact protection according to claim 5, characterized in that: The gas distribution pipeline system (6) includes a first conduit (61) and a second conduit (62); One end of the first conduit (61) is correspondingly connected to the supporting protection airbag (4), and the other end is connected to the second conduit (62), and the other end of the second conduit (62) is correspondingly connected to the straight section (511).

7. The ski knee pad for impact protection according to claim 6, characterized in that: Three arc-shaped strips (9) are fixed on both sides of the cover-shaped guard plate (1) from top to bottom, and the supporting protective airbag (4) is fixed on the inner side of the three arc-shaped strips (9) on the same side; The ends of the arc-shaped strips (9) at the middle of both sides are fixed with mounting rings (92) through connecting blocks (91); The air guide cylinder (51) is arranged in a penetrating manner in the corresponding installation ring (92), and the outer wall of the straight section (511) is fixed to the inner wall of the installation ring (92).

8. The ski knee pad for impact protection according to claim 7, characterized in that: It also includes a rear airbag support body (7), wherein the cross section of the rear airbag support body (7) is elliptical; The arc strips (9) at the uppermost and lowermost layers on both sides are fixedly connected with elastic connecting belts (71), and the rear airbag support body (7) is fixed to the ends of the four elastic connecting belts (71); The gas distribution pipeline system (6) further includes a third conduit (63) and a three-way connector (64); The first conduit (61) and the second conduit (62) are respectively connected to two interfaces of the three-way connector (64) in a one-to-one correspondence; The two ends of the rear airbag support body (7) are respectively connected to the third conduit (63), and the other end of the third conduit (63) is correspondingly connected to the other interface of the three-way connector (64); When the knee joint is flexed, the rear airbag support body (7) expands radially as the pressure of the air distribution pipeline system (6) increases, forming a three-dimensional support system at the popliteal fossa that cooperates with the upper support (2), the lower support (3) and the support protection airbag (4).

9. The ski knee pad for impact protection according to claim 1, characterized in that: A protective sleeve (8) is fixed on the side of the cover-shaped protective plate (1) that contacts the knee, and a through-hole (101) is provided on both the protective sleeve (8) and the cover-shaped protective plate (1).

10. The ski knee pad for impact protection according to claim 3, characterized in that: The upper supporting guard strip (21) and the lower supporting guard strip (31) on one side are both connected to a first restraining belt (01), and the upper supporting guard strip (21) and the lower supporting guard strip (31) on the other side are both connected to a second restraining belt (02); The first binding belt (01) is fixed with a sub-velcro (03), and the second binding belt (02) is fixed with a mother-velcro (04) that is bonded and matched with the sub-velcro (03).

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