Knee pad

Abstract

The utility model relates to a kneecap which comprises a kneecap body. An air bag is arranged at the specific position, corresponding to the knee of the human body, of the kneecap body, and an inflation structure and an air release structure are further arranged on the kneecap body. The inflation structure comprises an inflation cavity protruding out of the outer surface of the kneecap body, the inflation cavity is provided with an air containing chamber, an air inlet and an inflation opening used for communicating the air containing chamber with the air bag, the inflation structure further comprises a plug arranged at the inflation opening, in the normal state, the inflation opening is plugged by the plug, and when the inflation cavity is pressed, the inflation cavity is closed. Air in the air accommodating chamber is compressed and forms pressure flow so as to push open the plug to inflate the air bag; the air release structure comprises an air release valve seat protruding out of the outer surface of the kneecap body, an air release hole and an air release valve used for blocking the air release hole are arranged in the air release valve seat, and the air release valve can be pressed to release blocking of the air release hole so that air release of the air bag can be achieved. The inflation structure and the deflation structure of the kneecap are reasonable in design, and the kneecap has the advantages of being ingenious in structure, low in cost, convenient to use and the like.

Description

Technical Field

[0001] This utility model relates to the field of protective gear, and in particular to an inflatable knee brace. Background Technology

[0002] The knee is a major joint in the human body and plays an extremely important role in human movement. At the same time, the knee joint is also a relatively fragile and easily injured part. Therefore, people usually wear knee braces during exercise to effectively protect the knee and the surrounding muscle groups.

[0003] Traditional knee braces are mostly made of silicone or other foam materials, which are not very effective in protecting the knees. Therefore, inflatable knee braces with inflation function have appeared on the market. However, the inflation structure of existing inflatable knee braces is relatively complicated. They require an external air bladder similar to a blood pressure monitor or an electric inflation method, which is not only costly but also inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an inflatable knee brace that is ingeniously structured, low in cost, and easy to use.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A knee brace includes a knee brace body; an air bladder is provided at a specific position corresponding to the knee of the human body; the knee brace body also has an inflation structure and a deflation structure; the inflation structure includes an inflation cavity protruding from the outer surface of the knee brace body and pressable for inflation; the inflation cavity has an air receiving chamber, an air inlet for communicating the air receiving chamber with the outside to allow outside air to enter the air receiving chamber, and an inflation port for communicating the air receiving chamber with the air bladder; the inflation structure also includes a plug disposed at the inflation port, which is normally blocked by the plug. This ensures that the air containment chamber and the airbag are not connected. When the inflation chamber is pressed, the air in the air containment chamber is compressed and forms a pressure flow, which then pushes open the plug to inflate the airbag. The deflation structure includes a deflation valve seat protruding from the outer surface of the knee pad body. The deflation valve seat has a deflation hole communicating with the airbag. The deflation structure also includes a deflation valve installed on the deflation valve seat to block the deflation hole. The deflation valve includes a pressing part. When the pressing part is pressed, the deflation valve can disengage from the blockage of the deflation hole, thereby allowing the airbag to deflate.

[0007] Furthermore, the inflatable cavity includes a peripheral wall extending along the front-rear direction of the outer surface of the knee brace, a top wall at the front end of the peripheral wall, and a bottom wall at the rear end of the peripheral wall. The peripheral wall, the top wall, and the bottom wall form the air-receiving chamber. The air inlet is located on the top wall, and the inflation port is located on the bottom wall.

[0008] Furthermore, the plug includes a first part with a diameter larger than the air inlet, a second part with a diameter larger than the first part, and an intermediate connecting part connected between the first part and the second part with a diameter smaller than the air inlet. The first part is located on the inlet side of the air inlet, and a first airflow passage communicating with the air containment chamber is left between the first part and the inlet end face of the air inlet. The intermediate connecting part passes through the air inlet, and a second airflow passage communicating with the first airflow passage is left between the intermediate connecting part and the inner wall of the air inlet. The second part is located on the outlet side of the air inlet, and the second part normally fits against the outlet end face of the air inlet, thereby blocking the air inlet.

[0009] Furthermore, the vent hole is a stepped through-hole that penetrates the vent valve seat axially. It includes a first section with a smaller diameter located on the inner side and a second section with a larger diameter located on the outer side. A stepped surface is formed between the first section and the second section. The vent valve includes a valve stem portion with a diameter smaller than that of the second section, a sealing portion connected to the inner end of the valve stem portion, and a pressing portion connected to the outer end of the valve stem portion with a diameter smaller than that of the second section. The valve stem portion is movably inserted through the first section and the second section. The sealing portion is normally attached to the inner end face of the first section to block the vent hole. The pressing portion is located inside the second section, and a return spring is provided between the pressing portion and the stepped surface.

[0010] Furthermore, the knee brace body has a cylindrical structure that is larger at the top and smaller at the bottom. It includes an inner knee brace layer, an outer knee brace layer, and a liner sandwiched between the lower front side of the inner knee brace layer and the lower front side of the outer knee brace layer. The air bladder, inflation structure, and deflation structure are all disposed on the liner, and the liner is provided with an airflow channel for communicating the inflation port and deflation hole with the interior of the air bladder.

[0011] Furthermore, the liner is arc-shaped, comprising a horizontal section and two vertical sections disposed on the left and right sides of the horizontal section, the airbag is disposed on the horizontal section, and the inflation structure and deflation structure are disposed on one of the vertical sections.

[0012] Furthermore, the outer layer of the knee brace is provided with a first through hole and a second through hole corresponding to the inflation structure and deflation structure, respectively. The front part of the inflation cavity protrudes from the first through hole and protrudes from the outer surface of the outer layer of the knee brace, and the front part of the deflation valve seat protrudes from the second through hole and protrudes from the outer surface of the outer layer of the knee brace.

[0013] Furthermore, the outer layer of the knee brace is provided with a third through hole corresponding to the air bladder, and the front end of the air bladder protrudes through the third through hole and is exposed on the outer surface of the outer layer of the knee brace.

[0014] Furthermore, the specific location of the human knee refers to the patella.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The inflatable structure of this knee brace is very reasonably designed. It mainly consists of an inflatable cavity protruding from the outer surface of the knee brace body. This inflatable cavity has an air-retaining chamber that allows external air to enter. When the airbag needs to be inflated, simply press the inflatable cavity from the outside of the knee brace body. This causes the external air contained in the air-retaining chamber to form a pressure flow and be sent into the airbag, thus achieving inflation. Compared with existing inflatable structures, it is not only ingenious and low-cost, but also more convenient to use. Simultaneously, the deflation structure of this knee brace is also very reasonable. It mainly consists of a deflation valve seat protruding from the outer surface of the knee brace body and a deflation valve installed on the deflation valve seat to seal the deflation port. When the airbag needs to be deflated, simply press the pressing part of the deflation valve from the outside of the knee brace body. Therefore, the deflation operation of this knee brace is also very convenient. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the overall assembly of a knee brace according to this utility model.

[0018] Figure 2 yes Figure 1 A magnified view of part A in the diagram.

[0019] Figure 3 This is an exploded view of a knee brace according to this utility model.

[0020] Figure 4 This is a schematic diagram of the liner, airbag, inflation structure, and deflation structure described in this utility model.

[0021] Figure 5 yes Figure 4 A cross-sectional view of the structure shown.

[0022] Figure 6 yes Figure 5 A magnified view of part B in the diagram.

[0023] Figure 7 yes Figure 5 A magnified view of part C in the diagram. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0025] like Figures 1 to 7 As shown, the present invention provides a knee brace, including a knee brace body 1. An airbag 2 is provided at a specific location on the knee corresponding to the patella. Specifically, the specific location on the knee refers to the patella. In use, the airbag 2 provides good protection for the patella. Of course, in other embodiments of the present invention, the specific location on the knee can also be a location other than the patella.

[0026] The knee brace body 1 is also equipped with an inflation structure 3 and a deflation structure 4.

[0027] The inflatable structure 3 includes an inflatable cavity 31 protruding from the outer surface of the knee brace body 1 and pressable for inflation. The inflatable cavity 31 has an air-receiving chamber 311, an air inlet 312 for communicating the air-receiving chamber 311 with the outside so that outside air can enter the air-receiving chamber 311, and an inflation port 313 for communicating the air-receiving chamber 311 with the airbag 2. The inflatable structure 3 also includes a plug 32 disposed at the inflation port 313. Under normal conditions, the inflation port 313 is blocked by the plug 32, so that the air-receiving chamber 311 and the airbag 2 are not connected. At this time, the air in the air-receiving chamber 311 will not flow to the airbag 2, and the air in the airbag 2 will not flow to the airbag 2. Gas will not flow back into the air containment chamber 311. When the inflation chamber 31 is pressed, the air in the air containment chamber 311 is compressed and forms a pressure flow, which then pushes open the plug 32 to inflate the airbag 2. In addition, it should be noted that when the inflation chamber 31 is pressed, it can be pressed with the thumb blocking the air inlet 312 so that a sealed space can be formed inside the inflation chamber 31 (i.e., the air containment chamber 311), thereby causing the external air contained in the air containment chamber 311 to be compressed and form a pressure flow. At the same time, the inflation volume requirement of the airbag 2 can be met by repeatedly pressing the inflation chamber 31.

[0028] The venting structure 4 includes a venting valve seat 41 protruding from the outer surface of the knee pad body 1. The venting valve seat 41 has a venting hole 411 communicating with the airbag 2. The venting structure 4 also includes a venting valve 42 installed on the venting valve seat 41 to block the venting hole 411. The venting valve 42 includes a pressing part 421. When the pressing part 421 is pressed, the venting valve 42 can disengage from the venting hole 411, thereby allowing the airbag 2 to vent.

[0029] In a preferred embodiment of the present invention, the inflatable cavity 31 includes a peripheral wall 31a extending in the front-rear direction along the outer surface of the knee brace body 1, a top wall 31b disposed at the front end of the peripheral wall 31a, and a bottom wall 31c disposed at the rear end of the peripheral wall 31a. An air receiving chamber 311 is formed between the peripheral wall 31a, the top wall 31b, and the bottom wall 31c. An air inlet 312 is disposed on the top wall 31b, and the air inlet 312 is preferably a small hole structure. An inflation port 313 is disposed on the bottom wall 31c.

[0030] The plug 32 includes a first part 321 with a diameter larger than that of the air inlet 313, a second part 322 with a diameter larger than that of the first part 321, and an intermediate connecting part 323 with a diameter smaller than that of the air inlet 313, connecting the first part 321 and the second part 322. The first part 321 is located on the inlet side of the air inlet 313, and a first airflow passage 324 communicating with the air containment chamber 311 is left between the first part 321 and the inlet end face of the air inlet 313. The intermediate connecting part 323 passes through the air inlet 313, and a second airflow passage 325 communicating with the first airflow passage 324 is left between the intermediate connecting part 323 and the inner wall of the air inlet 313. The second part 323 is located on the outlet side of the air inlet 313, and the second part... Under normal conditions, part 323 adheres to the outlet end face 3131 of the inflation port 313, thereby blocking the inflation port 313. Specifically, under normal conditions, the air pressure inside the second part 322 (i.e., the side away from the inflation port 313) is greater than the air pressure outside the second part (i.e., the side facing the inflation port 313). Therefore, under the action of this air pressure difference, the second part 322 adheres to the outlet end face 3131 of the inflation port 313, thereby blocking the inflation port 313. When the inflation cavity 31 is pressed, the air in the air containment chamber 311 is compressed to form a pressure flow. This pressure flow passes through the first airflow passage 324 and the second airflow passage 325 in sequence and pushes open the second part 322, so that the outlet end of the inflation port 313 is opened. Then, the pressure flow can be sent into the airbag 2 to achieve inflation.

[0031] In a preferred embodiment of this utility model, the vent hole 411 is a stepped through hole extending axially through the vent valve seat 41, comprising a first hole section 4111 located on the inner side with a smaller diameter and a second hole section 4112 located on the outer side with a larger diameter. A stepped surface 4113 is formed between the first hole section 4111 and the second hole section 4112. The vent valve 42 includes a valve stem portion 422 with a diameter smaller than that of the second hole section 4112 and a sealing portion 42 connected to the inner end of the valve stem portion 422. 3. The pressing part 421 is connected to the outer end of the valve stem part 422 and has a diameter smaller than that of the second hole section 4112. The valve stem part 422 is movably inserted through the first hole section 4111 and the second hole section 4112. The sealing part 423 is normally attached to the inner end face 4111a of the first hole section 4111 to block the vent hole 411. The pressing part 421 is located inside the second hole section 4112, and a return spring 43 is provided between the pressing part 421 and the stepped surface 4113. In this structure, the pressing part 421 protrudes from the second hole section 4112. When the pressing part 421 is pressed, the valve stem part 422 and the sealing part 423 move inward accordingly, and the sealing part 423 disengages from the inner end face 4111a of the first hole section 4111 and thus releases the blockage on the vent hole 411. At this time, the gas in the airbag 2 can be discharged outward through the vent hole 411. When the pressing part 421 is released, the return spring 43 causes the pressure relief valve 42 to return outward and allows the sealing part 423 to return to the position that is in contact with the inner end face 4111a of the first hole section 4111.

[0032] In a preferred embodiment of this utility model, the knee brace body 1 has a cylindrical structure that is larger at the top and smaller at the bottom. It includes an inner knee brace layer 11, an outer knee brace layer 12, and a liner 13 sandwiched between the lower front side of the inner knee brace layer 11 and the lower front side of the outer knee brace layer 12. The airbag 2, the inflation structure 3, and the deflation structure 4 are all disposed on the liner 13, and the liner 13 is provided with an airflow channel for communicating the inflation port 313 and the deflation hole 411 with the interior of the airbag 2.

[0033] Furthermore, the liner 13 is arc-shaped and includes a transverse section 13a and two vertical sections 13b disposed on the left and right sides of the transverse section 13a. The airbag 2 is disposed on the transverse section 13a, and the inflation structure 3 and the deflation structure 4 are disposed on one of the vertical sections 13b.

[0034] Furthermore, the outer layer 12 of the knee brace is provided with a first through hole 121 and a second through hole 122 at the corresponding positions of the inflation structure 3 and the deflation structure 4. The front part of the inflation cavity 31 protrudes from the first through hole 121 and protrudes from the outer surface of the outer layer 12 of the knee brace, and the front part of the deflation valve seat 41 protrudes from the second through hole 122 and protrudes from the outer surface of the outer layer 12 of the knee brace.

[0035] In addition, a third through hole 123 is provided on the outer layer 12 of the knee brace corresponding to the airbag 2, and the front end of the airbag 2 protrudes through the third through hole 123 and is exposed on the outer surface of the outer layer 12 of the knee brace.

[0036] The above description is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the description of the utility model shall still fall within the scope of the present utility model patent.

Claims

1. A knee brace, comprising a knee brace body; characterized in that: The knee brace body is provided with an airbag at a specific position corresponding to the human knee, and the knee brace body is also provided with an inflation structure and a deflation structure; The inflatable structure includes an inflatable cavity protruding from the outer surface of the knee brace and pressable for inflation. The inflatable cavity has an air receiving chamber, an air inlet for communicating the air receiving chamber with the outside so that outside air can enter the air receiving chamber, and an inflation port for communicating the air receiving chamber with the airbag. The inflatable structure also includes a plug provided at the inflation port. Under normal conditions, the inflation port is blocked by the plug so that the air receiving chamber and the airbag are not connected. When the inflatable cavity is pressed, the air in the air receiving chamber is compressed and forms a pressure flow, which then pushes open the plug and inflates the airbag. The venting structure includes a venting valve seat protruding from the outer surface of the knee brace body. The venting valve seat has a venting hole communicating with the airbag. The venting structure also includes a venting valve installed on the venting valve seat to block the venting hole. The venting valve includes a pressing part. When the pressing part is pressed, the venting valve can disengage from blocking the venting hole, thereby allowing the airbag to vent.

2. The knee brace according to claim 1, characterized in that: The inflatable cavity includes a peripheral wall extending along the front-rear direction of the outer surface of the knee brace, a top wall at the front end of the peripheral wall, and a bottom wall at the rear end of the peripheral wall. The peripheral wall, the top wall, and the bottom wall form the air-receiving chamber. The air inlet is located on the top wall, and the inflation port is located on the bottom wall.

3. A knee brace according to claim 2, characterized in that: The plug includes a first part with a diameter larger than the air inlet, a second part with a diameter larger than the first part, and an intermediate connecting part with a diameter smaller than the air inlet, which is connected between the first part and the second part. The first part is located on the inlet side of the air inlet, and a first airflow passage communicating with the air containment chamber is left between the first part and the inlet end face of the air inlet. The intermediate connecting part passes through the air inlet, and a second airflow passage communicating with the first airflow passage is left between the intermediate connecting part and the inner wall of the air inlet. The second part is located on the outlet side of the air inlet, and the second part is normally attached to the outlet end face of the air inlet, thereby blocking the air inlet.

4. A knee brace according to claim 1, characterized in that: The vent hole is a stepped through-hole that penetrates the vent valve seat axially. It includes a first section with a smaller diameter located on the inner side and a second section with a larger diameter located on the outer side. A stepped surface is formed between the first section and the second section. The vent valve includes a valve stem portion with a diameter smaller than that of the second section, a sealing portion connected to the inner end of the valve stem portion, and a pressing portion connected to the outer end of the valve stem portion with a diameter smaller than that of the second section. The valve stem portion is movably inserted through the first section and the second section. Under normal conditions, the sealing portion is attached to the inner end face of the first section to block the vent hole. The pressing portion is located inside the second section, and a return spring is provided between the pressing portion and the stepped surface.

5. A knee brace according to claim 1, characterized in that: The knee brace body has a cylindrical structure that is larger at the top and smaller at the bottom. It includes an inner knee brace layer, an outer knee brace layer, and a liner sandwiched between the lower front side of the inner knee brace layer and the lower front side of the outer knee brace layer. The air bladder, inflation structure, and deflation structure are all provided on the liner, and the liner is provided with an airflow channel for communicating the inflation port and deflation hole with the interior of the air bladder.

6. A knee brace according to claim 5, characterized in that: The liner is arc-shaped and includes a horizontal section and two vertical sections disposed on the left and right sides of the horizontal section. The airbag is disposed on the horizontal section, and the inflation structure and deflation structure are disposed on one of the vertical sections.

7. A knee brace according to claim 5 or 6, characterized in that: The outer layer of the knee brace is provided with a first through hole and a second through hole corresponding to the inflation structure and deflation structure, respectively. The front part of the inflation cavity protrudes from the first through hole and protrudes from the outer surface of the outer layer of the knee brace, and the front part of the deflation valve seat protrudes from the second through hole and protrudes from the outer surface of the outer layer of the knee brace.

8. A knee brace according to claim 7, characterized in that: The outer layer of the knee brace is provided with a third through hole corresponding to the air bladder, and the front end of the air bladder protrudes through the third through hole and is exposed on the outer surface of the outer layer of the knee brace.

9. A knee brace according to claim 1, characterized in that: The specific location of the human knee refers to the patella.

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