Knee pad

Abstract

The utility model belongs to the technical field of sports protectors, and particularly discloses a kneecap which comprises a kneecap piece, two right strips are arranged on the right side of the kneecap piece, an included angle is formed between the two right strips, and the two right strips extend in the vertical direction of the kneecap piece respectively. The left side of the kneecap sheet is provided with two left strips which are arranged up and down at an interval, and each left strip is provided with a through hole; the right strip penetrates through the corresponding through hole and is fixed with the knee pad sheet through a connecting piece, and the right strip and the knee pad sheet are encircled to form a closed ring; each left strip is connected with the kneecap sheet or the corresponding right strip through a connecting piece, and the left strips and the kneecap sheet are encircled to form a closed ring. After the kneecap is worn, the effect of protecting the anterior cruciate ligament can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sports protective gear, and particularly relates to a knee pad. Background Art

[0002] Knee pads are used to protect the human knee joint. While having a warming function, they can also reduce the risk of knee injuries during the user's movement. Knee pads can be divided into woven knee pads and one-piece neoprene knee pads according to their materials. Woven knee pads are usually woven into an elastic tubular structure. When wearing a woven knee pad, it needs to be set on from the human foot upwards to complete the wearing of the knee pad, which has the problem of inconvenient use; while the one-piece neoprene knee pad is fixed to the knee position by bundling methods such as Velcro. While being convenient to wear, it also has the advantage of being freely adjustable in tightness. Therefore, this type of knee pad occupies the mainstream share in the market.

[0003] The structure of the existing one-piece neoprene knee pad, as shown in the patent with the patent application number CN202022335932.5 and the name of a knee pad, mainly includes a knee pad piece and four connecting bands arranged on the knee pad piece. The four connecting bands are respectively arranged on the left and right sides of the knee pad piece and extend horizontally outwards. When wearing, the knee pad piece covers the front of the knee. After winding the two connecting bands on the left around the knee from the left, they are fixed to the knee pad piece by means such as Velcro; after winding the two connecting bands on the right around the knee from the right, they are fixed to the knee pad piece by means such as Velcro to complete the wearing of the knee pad.

[0004] However, during the wearing process, there is a situation where the knee joint bends repeatedly. Then, during the fixing process of the connecting bands, the force is prone to slide backwards to the popliteal fossa position. After wearing for a long time, it will accumulate in the middle of the popliteal fossa behind the knee, causing discomfort and being unable to provide continuous correct pressure on the joint, and it is difficult to provide good protection for parts such as the anterior cruciate ligament of the knee. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a knee pad that can effectively protect the anterior cruciate ligament of the knee.

[0006] The utility model provides a knee pad, including a knee pad piece,

[0007] Two right strips arranged at an angle are provided on the right side of the knee pad piece, and the two right strips respectively extend along the up and down directions of the knee pad piece;

[0008] Two left strips arranged at an interval up and down are provided on the left side of the knee pad piece, and through holes are formed in each left strip;

[0009] The right strip passes through the corresponding through hole and is fixed to the knee pad piece through a connecting piece, and the right strip and the knee pad piece enclose a closed loop;

[0010] Each left strip is connected to the knee guard piece or the corresponding right strip through a connecting piece, and forms a closed loop with the knee guard piece.

[0011] The working principle of the present utility model:

[0012] Step 1: Cover the knee guard piece in front of the knee. Wind the upward-extending right strip from behind the knee, so that the right strip passes through the perforation on the left strip located in the upper position, and then connect it to the knee guard piece through the connecting piece (such as Velcro) on the right strip;

[0013] Step 2: The left strip cooperating with the right strip in Step 1 winds from the back and fits the thigh, and then is fixed through the connecting piece and the knee guard piece;

[0014] Step 3: Wind the downward-extending right strip from behind the knee, so that the right strip passes through the perforation on the left strip located in the lower position, and then connect it to the knee guard piece through the connecting piece on the right strip;

[0015] Step 4: The left strip cooperating with the right strip in Step 3 winds from the back and fits the calf, and then is fixed through the connecting piece and the knee guard piece.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The two perforations provided in the present utility model are used in cooperation with the two right strips, which can limit the position of the closed loop formed by the right strip and the knee guard ladder piece. During the wearing process of the knee guard, it can effectively avoid the problem that the right strip slides along the back popliteal fossa, ensuring that the right strip can be at a specific binding position of the knee; at the same time, the two right strips extend respectively above and below the knee guard piece. When the two right strips are worn, they can imitate the working mechanism of the anterior cruciate ligament (ACL), apply corresponding forces in the corresponding directions outside the knee, disperse the ligament pressure, and protect the ligament from being overstretched during the flexion and extension of the knee joint. Therefore, after the knee guard is worn, it can achieve the effect of protecting the anterior cruciate ligament.

[0018] Furthermore, the included angle between the centerlines of the two right strips is 2 - 20°.

[0019] Furthermore, the knee guard piece has a rectangular sheet structure, and an annular gasket is provided in the middle of the knee guard piece.

[0020] Furthermore, at least two support strips are provided on the knee guard piece. The two support strips are respectively located on the left and right sides of the annular gasket and extend towards the upper and lower sides of the knee guard piece.

[0021] Furthermore, one end of the left strip is connected to the knee guard piece, and the other end of the left strip extends horizontally.

[0022] Furthermore, the perforation is extended and opened in the up-and-down direction of the knee guard piece.

[0023] Further, the perforation is arranged near one end of the left strip, and the distance between the horizontal extension line of the center of the perforation and the center line of the corresponding left strip is 10 mm - 20 mm.

[0024] Further, the two left strips are respectively a thigh connecting strip and a calf connecting strip, and the length of the thigh connecting strip is greater than that of the calf connecting strip.

[0025] Further, the two left strips are respectively connected to the upper and lower sides of the knee guard piece and extend horizontally outwards.

[0026] Further, the two right strips are located in the middle of the upper and lower sides of the knee guard piece and are fixed to the right side of the knee guard piece. Description of the Drawings

[0027] Figure 1 is a schematic structural view of the present utility model.

[0028] In the figure: knee guard piece 1, annular gasket 11, support strip 12, connecting piece 10, left strip 20, perforation 30, right strip 40. Detailed Embodiment

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0031] In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0032] Such as Figure 1As shown in the figure, the present utility model provides a knee pad, which includes a knee pad piece 1. On the right side of the knee pad piece 1, there are two right strips 40 arranged at an angle, and the two right strips 40 respectively extend along the up and down directions of the knee pad piece 1. On the left side of the knee pad piece 1, there are two left strips 20 arranged at intervals up and down, and through holes 30 are opened on each left strip 20. The right strip 40 passes through the corresponding through hole 30 and is fixed to the knee pad piece 1 through a connecting piece 10, and the right strip 40 and the knee pad piece 1 enclose a closed loop. Each left strip 20 is connected to the knee pad piece 1 or the corresponding right strip 40 through a connecting piece 10 and encloses a closed loop with the knee pad piece 1.

[0033] The knee pad of the present utility model belongs to a one-piece diving material knee pad, and the preparation material uses the existing diving material, which is a cuttable elastic material. The diving material is a three-layer laminated material with a synthetic rubber foam body in the middle. This material has good elasticity and is relatively soft, and the specific materials of the inner and outer layers can be selected according to requirements. It is made into a one-piece or cylindrical shape by cutting and sewing, and is worn at the knee joint. The elasticity of the material itself and the attached elastic bands provide a fixing and tightening effect.

[0034] The present utility model designs the cutting structure of the knee pad so that the knee pad can protect the anterior and posterior cruciate ligaments of the knee for a long time when worn. For this purpose, on the basis of the existing four connecting bands, the present utility model improves the layout of the four connecting bands and the knee pad piece 1.

[0035] On the two left strips 20 of the present utility model, through holes 30 are respectively provided. At the same time, the two right strips 40 and the two left strips 20 are correspondingly matched. During wearing, the existence of the through holes 30 can limit the position of the closed loop formed by the right strip 40 and the knee pad ladder piece. During the wearing process of the knee pad, the problem that the right strip 40 slides along the posterior popliteal fossa can be effectively avoided, ensuring that the right strip 40 can be at a specific binding position on the knee. At the same time, the two right strips 40 respectively extend up and down along the knee pad piece 1. Then, during wearing, the two right strips 40 can imitate the working mechanism of the anterior cruciate ligament (ACL), apply a corresponding force in the corresponding direction outside the knee, disperse the ligament pressure, and protect the ligament from being overstretched during the flexion and extension of the knee joint. Thus, after the knee pad is worn, the effect of protecting the anterior cruciate ligament can be achieved.

[0036] In another embodiment of the present utility model, in order to make the included angle between the two right strips 40 more conform to the working mechanism of the anterior cruciate ligament of the knee, in this embodiment, as Figure 1 shown, the included angle a between the center lines of the two right strips 40 is limited to 2 - 20°.

[0037] The structure and working mechanism of the anterior cruciate ligament:

[0038] The anterior cruciate ligament is a stable structure and rotation axis of the knee joint. It limits the forward movement of the tibia on the femur and assists the internal and external rotation of the tibia on the femur. Internal rotation can bend the cruciate ligament, while external rotation can straighten it.

[0039] The anterior cruciate ligament originates from the medial and lateral anterior horns of the meniscus in the anterior region of the tibial intercondylar ridge. The tibial attachment surface is an oval shape that is long from front to back. It is divided into an anterior medial bundle and a posterolateral bundle. The two bundles extend posteriorly, outwardly, and upwardly in a spiral disk, and end in a fan-shaped manner at the posterior superior part of the medial surface of the lateral femoral condyle. The femoral condyle attachment point area is about 20mmx10mm (maximum diameter), the ligament is about 4cm long (3.7-4.1cm), the average width of the middle part is 10mm (10-12mm), and the cross-section is approximately oval, with an average area of ​​36mm for females and males, respectively. 2 and 44mm 2 The ligament gradually spreads out 10 to 12 mm from the tibial insertion point, forming an attachment surface on the tibial insertion point that is more than 3 times the cross-sectional area of ​​the midpoint. In the sagittal plane, the angle between the ACL and the femur is 30 ± 3°, the angle between the ACL and the tibia is 50 ± 3°, and the angle between the ACL and the femur is 21 ± 1° in the coronal plane.

[0040] When the knee is flexed at 90°, the angle between the long axis of the ligament and the long axis of the femur is 26±4°. Since the anterior cruciate ligament is in the sagittal position on the femoral attachment surface and the tibial attachment surface is in the horizontal position, the ligament rotates outward about 90° about its own mid-axis from the upper end to the lower end. The middle part is the narrowest, with a width of 11.49±1.59mm and a thickness of 4.33±0.49mm. When the knee is straightened, it is flat and twists when the knee is flexed. When the knee is flexed at 90°, the length of the anteromedial side (AA) of the ligament is 34.12±5.33mm, the middle length is 26.83±4.48mm, and the posterolateral side (BB) is 21.50±2.68mm.

[0041] Therefore, in the design of the right strap 40, the angle between the two right straps 40 on the right side of the knee pad 1 corresponds to the angle between the sagittal plane of the ACL and the femur when the ACL is extended to flexed, and the upper right strap 40 is parallel to the sagittal plane, that is, the tilting angle of the single right strap 40 in the horizontal direction is about 26° to 30°. Because the elastic material will be pulled upward by about 20°-25° after passing through the perforation 30 during the pulling process, the pulling angle varies with different leg circumferences. Therefore, it can be concluded that the angle of the single right strap 40 in the horizontal direction should be 1°-10°. Therefore, in this embodiment, the angle between the two right straps 40 is limited to 2°-20° to achieve the most ergonomic effect. When worn, the knee pad can effectively protect the anterior cruciate ligament.

[0042] In another embodiment of the present invention, in order to avoid tearing of the connection position of the two right strips 40, as shown in FIG. Figure 1As shown in the figure, the present utility model makes the position between the two right strips 40 into an arc shape, which can improve the anti-deformation ability, so as to reduce or avoid the risk of tearing during the wearing process of the two right strips 40. Similarly, on the side of the right strip 40 away from the other right strip 40, an arc-shaped connection structure is also adopted between the right strip 40 and the knee guard piece 1, which can improve the structural aesthetics and also improve the anti-tearing ability between the right strip 40 and the knee guard piece 1.

[0043] In another embodiment of the present utility model, for the convenience of cutting the knee guard piece 1 and at the same time ensuring that the knee guard piece 1 can cover the knee as much as possible, in this embodiment, as Figure 1 shown, the knee guard piece 1 is set as a rectangular sheet structure. Preferably, the knee guard piece 1 can adopt a square sheet structure. In order to enable the knee guard piece 1 to be positioned and worn when covering the knee and ensure that the knee can be protected at basically the same position each time it is worn, in this embodiment, an annular gasket 11 is provided in the middle of the knee guard piece 1. The middle of the annular gasket 11 can be provided with a hollow or not. The annular gasket 11 is a convex and concave structure formed along the front and back of the knee guard piece 1, so that the annular gasket 11 can fasten the patella and be used to fix the position of the entire knee guard during wearing. At the same time, the annular gasket 11 can also play a buffering role. The annular gasket 11 can adopt an EVA gasket, an air cushion, a solid silicone gasket, a liquid silicone gasket, a rubber gasket, etc.

[0044] In another embodiment of the present utility model, in order to enable the knee guard piece 1 to protect the tibia of the knee when the knee guard is worn, in this embodiment, as Figure 1 shown, at least two support strips 12 are provided on the knee guard piece 1. The two support strips 12 are respectively located on the left and right sides of the annular gasket 11 and extend toward the upper and lower sides of the knee guard piece 1. There can be multiple support strips 12 on one side of the annular gasket 11, and the multiple support strips 12 are arranged side by side in the left-right direction of the knee guard piece 1. The support strips 12 adopt spring strips, hinge plates, etc. The setting of the support strips 12 is used to limit the excessive internal and external rotation of the tibia, abduction and adduction of the joint, so that when worn, the knee guard can protect the tibia of the knee.

[0045] In another embodiment of the present utility model, when the two left strips 20 are respectively connected to the knee guard piece 1, they need to be fixed to the user's thigh and calf respectively. In view of the specific structure of the human thigh and calf, in order to make the closed loop formed by the left strip 20 and the knee guard piece 1 fit the specific parts of the human body more closely after surrounding the human body, in this embodiment, as Figure 1 shown, one end of the left strip 20 is connected to the knee guard piece 1, and the other end of the left strip 20 extends horizontally. When the left strip 20 is horizontally arranged, a closed loop that is roughly cylindrical can be formed when the left strip 20 is connected to the knee guard piece 1, so as to fit the outer sides of the human thigh and calf. The perforation 30 is arranged close to the knee guard piece 1, which can facilitate the strip on the right side to pass through the hole and present an obliquely upward or obliquely downward direction after being wrapped, and can be pasted in the middle area between the two support strips 12 on the front side of the knee guard.

[0046] In another embodiment of the present utility model, to avoid tearing during the use of the perforation 30, as Figure 1 shown, in this embodiment, the perforation 30 is extended in the up and down direction of the knee guard piece 1. The perforation 30 can be a rod-shaped hole, an oval hole, a teardrop-shaped hole, etc., so that the perforation 30 has no obvious corners to avoid tearing.

[0047] In another embodiment of the present utility model, as Figure 1 shown, the perforation 30 is arranged at one end close to the left strip 20, and the perforation 30 is close to the knee guard piece 1, which can facilitate the right strip to pass through the hole and present an obliquely upward or obliquely downward direction after being wrapped, and can be pasted in the middle area between the support strips 12 on both sides of the front of the knee guard. The horizontal extension line of the center of the perforation 30 is 10 mm - 20 mm away from the center line of the corresponding left strip 20. The vertical position of the perforation 30 should be closer to the center horizontal line of the knee guard piece 1 than the position of the left strip 20. The interval between the horizontal line of the center of the perforation 30 and the center line of the left strip 20 varies slightly according to different sizes, generally between 10 mm and 20 mm ( Figure 1 in, the distance between the two dotted lines on the upper left strip 20).

[0048] In another embodiment of the present utility model, since the two left strips 20 are respectively worn in cooperation with the human thigh and calf, and there are differences between the thigh circumference and calf circumference of the human body. Therefore, to reduce the production cost of the knee guard and achieve the purpose of smooth wearing, in this embodiment, as Figure 1 shown, the two left strips 20 are respectively a thigh connecting strip and a calf connecting strip, and the length of the thigh connecting strip is greater than the length of the calf connecting strip. The lengths of the thigh connecting strip and the calf connecting strip can be selected according to the thigh circumference and calf circumference of women's models, men's models or different user groups. The length of the calf connecting strip is shorter than the length of the thigh connecting strip, which can reduce the cost while ensuring the smooth wearing of the knee guard.

[0049] In another embodiment of the present utility model, since the two left strips 20 are respectively worn in cooperation with the human thigh and calf, and there is a certain distance between the thigh and the calf. To make the wearing effect of the knee guard better, as Figure 1 shown, in this embodiment, the two left strips 20 are respectively connected to the upper and lower sides of the knee guard piece 1 and extend horizontally outwards. The setting method of the two left strips 20 and the knee guard piece 1 facilitates the overall cutting and edge sealing of the knee guard. At the same time, it can also make the distance between the two left strips 20 meet the most suitable wearing positions of the human thigh and calf as much as possible.

[0050] In another embodiment of the present utility model, to enable the two right strips to provide extrusion force on the outside of the knee from the upper and lower sides, as Figure 1As shown in the figure, in this embodiment, the two right strips 40 are located in the middle of the upper and lower sides of the knee guard piece 1 and fixed to the right side of the knee guard piece 1. In this way, the extrusion forces of the two right strips can press the anterior cruciate ligament obliquely upward and obliquely downward from the knee respectively. After the two right strips 40 are worn and tightened, the protective effect on the anterior cruciate ligament can be achieved.

[0051] The connecting member 10 of the present utility model is a magic tape, which realizes the connection between the right strip 40 and the knee guard piece 1; the connection between the left strip 20 and the knee guard piece 1, or the connection between the left strip 20 and the right strip 40.

[0052] The working principle of the present utility model:

[0053] Step 1: Cover the knee guard piece 1 in front of the knee, wind the upward-extending right strip 40 from behind the knee, so that the right strip 40 passes through the perforation 30 on the left strip 20 located in the upper position, and then connect it to the knee guard piece 1 through the connecting member 10 (such as magic tape) on the right strip 40;

[0054] Step 2: The left strip 20 cooperating with the right strip 40 in Step 1 is wound from behind and attached to the thigh, and then fixed through the connecting member 10 and the knee guard piece 1;

[0055] Step 3: Wind the downward-extending right strip 40 from behind the knee, so that the right strip 40 passes through the perforation 30 on the left strip 20 located in the lower position, and then connect it to the knee guard piece 1 through the connecting member 10 on the right strip 40;

[0056] Step 4: The left strip 20 cooperating with the right strip 40 in Step 3 is wound from behind and attached to the calf, and then fixed through the connecting member 10 and the knee guard piece 1.

[0057] The above specific implementation manners further elaborate on the purpose, technical solution and beneficial effects of the present utility model. It should be understood that the above is only the specific implementation method of the present utility model and is not used to limit the present utility model. Any modifications, equivalent replacements and improvements made within the gist of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A kneepad, characterized in that: Including knee pads (1), The right side of the knee pad (1) is provided with two right strips (40) arranged at an angle, and the two right strips (40) extend in the upper and lower directions of the knee pad (1) respectively; The left side of the knee pad (1) is provided with two left strips (20) spaced apart from each other, and each left strip (20) is provided with a perforation (30); The right strap (40) passes through the corresponding through-hole (30) and is fixed to the knee pad (1) via the connecting piece (10), and the right strap (40) and the knee pad (1) are surrounded to form a closed loop; Each left strap (20) is connected to the knee pad (1) or the corresponding right strap (40) through a connecting piece (10), and surrounds the knee pad (1) to form a closed loop.

2. The kneepad according to claim 1, characterized in that: The included angle between the center lines of the two right strips (40) is 2-20°.

3. The kneepad according to claim 1 or 2, characterized in that: The knee pad (1) is in a rectangular sheet-like structure, and an annular gasket (11) is provided in the middle of the knee pad (1).

4. The kneepad according to claim 3, characterized in that: The knee pad (1) is provided with at least two support strips (12), the two support strips (12) are respectively located on the left and right sides of the annular gasket (11) and extend toward the upper and lower sides of the knee pad (1).

5. The kneepad according to claim 1, 2 or 4, characterized in that: One end of the left strap (20) is connected to the knee pad (1), and the other end of the left strap (20) extends horizontally.

6. The kneepad according to claim 5, characterized in that: The perforations (30) are extended along the upper and lower directions of the knee pad (1).

7. The knee brace according to claim 6, characterized in that: The perforation (30) is arranged close to one end of the left strip (20), and the distance between the horizontal extension line of the center of the perforation (30) and the corresponding center line of the left strip (20) is 10mm-20mm.

8. The knee brace according to claim 1, 2, 4, 6 or 7, characterized in that: The two left strips (20) are respectively a thigh connecting strip and a calf connecting strip, and the length of the thigh connecting strip is greater than the length of the calf connecting strip.

9. The knee brace according to claim 1, 2, 4, 6 or 7, characterized in that: The two left strips (20) are respectively connected to the upper and lower sides of the knee guard (1) and extend outward horizontally.

10. The knee brace according to claim 9, characterized in that: The two right straps (40) are located in the middle of the upper and lower sides of the knee pad (1) and are fixed to the right side of the knee pad (1).

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