CN109674116B

CN109674116B - Kneecap protecting kneecap

Info

Publication number: CN109674116B
Application number: CN201910096756.3A
Authority: CN
Inventors: 吕林晏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2021-03-30
Anticipated expiration: 2039-01-31
Also published as: CN109674116A

Abstract

The invention discloses a kneecap for protecting patella, which comprises a kneecap body and a patella protection device; the patella of the knee pad body and the peripheral part of the patella adopt a sandwich structure; the patella protection device is arranged in the sandwich structure of the kneecap body; the sandwich structure comprises an inner layer and an outer layer; the inner layer of the sandwich structure is provided with an annular soft cushion for wrapping the patella; the patella protection device comprises an elastic device and a protection ring arranged on the top of the elastic device; the bottom of the elastic device is fixedly connected with the annular soft cushion; the elastic means are in a pre-compressed state in the knee-pad interlayer, the elastic means being pre-compressed by 20% to 80% of the total deformation; when the knee joint is not bent and the bending angle is small, a good fixing effect is generated on the patella and the peripheral area of the patella; meanwhile, the invention can also play a good role in buffering and shielding the patella, thereby avoiding the patella from being injured by impact.

Description

Kneecap protecting kneecap

Technical Field

The invention relates to a kneepad, in particular to a kneepad with a protection function on patella.

Background

The knee pad generally has the functions of braking, heat preservation, health care and the like, wherein the braking function of the knee pad is to apply certain pressure to the knee joint through the knee pad to fix the patella at a relatively stable position, so that the knee pad plays a role in protecting the patella.

When the knee joint bending angle is small, the patella femoral support band is loose, the quadriceps femoris muscle is unstable to control, and meanwhile, the patella tends to slip outwards due to the knee valgus, the valgus position of the patella tendon and the oblique position of the quadriceps femoris muscle. The range of knee flexion angles from 0 to 10 degrees is the most unstable stage of the patella.

At present, no matter the knee pad with the opening or the elastic knee pad is provided, when the bending angle of the knee joint is larger, the knee pad is stretched obviously, the tensile force of the knee pad is increased obviously, meanwhile, the patella protrudes out of the knee joint obviously, the tensile force of the knee pad is highly concentrated on the patella and the periphery of the patella, and the fixing capacity of the knee pad on the patella is very strong at the moment. However, when the knee joint is not bent and the bending angle is small, the knee pad has small pressure on the patella and the periphery of the patella due to the small degree of protrusion of the patella, so that the fixing capacity of the traditional knee pad on the patella when the knee joint is not bent and the bending angle is small is obviously insufficient.

Disclosure of Invention

The invention aims to provide a kneecap with simple structure, reasonable design and convenient use, aiming at the defects of the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: it comprises a kneepad body and a patella protection device; the patella of the knee pad body and the peripheral part of the patella adopt a sandwich structure; the patella protection device is arranged in the sandwich structure of the kneecap body; the sandwich structure comprises an inner layer and an outer layer; the inner layer of the sandwich structure is provided with an annular soft cushion for wrapping the patella; the patella protection device comprises an elastic device and a protection ring arranged on the top of the elastic device; the bottom of the elastic device is fixedly connected with the annular soft cushion;

further, when the patella protection device is arranged on a knee pad, the elastic device is pre-compressed by 20% -80% of the total deformation amount;

furthermore, the elastic device adopts a flat-end-to-top wave spring.

After the structure is adopted, the kneepad for protecting the patella has the following advantages:

1. when the force and the deformation are the same as those of the spiral spring, the height of the flat end to the top wave spring can be reduced by 50 percent compared with the height of the spiral spring, so that the volume and the weight of the patella protection device can be reduced, and the wearing comfort of the knee pad is improved;

2. when the kneecap is worn, the kneecap protection device protrudes out of the outer surface of the kneecap, the tension of the kneecap on the inner layer of the kneecap which is jointed with the kneecap is very small, and the stretching deformation of the outer layer of the kneecap is the largest, so that the tension of the kneecap is concentrated on the outer layer of the kneecap and applies very large radial pressure to the kneecap protection device; when the knee joint is not bent and the bending angle is small, the wave spring can apply larger radial pressure to the patella and the peripheral area of the patella to generate good fixing action;

3. when the bending angle of the knee joint is increased, the wave spring is further compressed, the pressure of the invention on the patella is increased, and the fixing effect is further strengthened;

4. because the invention protrudes above the patella and the top is provided with the protection ring, when the knee collides with other objects in the front, the wave spring is stressed to contract and forms a cavity which can completely accommodate the patella together with the protection ring at the top and the annular soft cushion at the bottom, thereby playing the role of buffering and shielding the patella and avoiding the patella from being injured by collision.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of the patella protector with wave spring pre-compressed state according to the present invention;

fig. 2 is a schematic view of the patella protector wave spring of the present invention in a fully compressed state;

fig. 3 is a schematic structural diagram of the present invention.

Description of reference numerals:

1. a kneepad body; 2. a sandwich structure; 3. an annular cushion; 4. the flat end is opposite to the wave spring; 5. a guard ring; 6. a patella; 7. a wave spring cavity; 21. an inner layer; 22. and (4) an outer layer.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 3, the technical solution adopted by the present embodiment is: it comprises a kneepad body 1 and a patella protection device; the patella of the knee pad body 1 and the peripheral part of the patella adopt a sandwich structure 2; the patella protection device is arranged in the sandwich structure 2 of the kneecap body; the sandwich structure 2 comprises an inner layer 21 and an outer layer 22; the inner layer 21 of the sandwich structure is provided with an annular soft cushion 3 for wrapping the patella; the patella protection device comprises a flat end-to-top wave spring 4 and a protection ring 5 arranged at the top of the flat end-to-top wave spring; the flat end is fixedly connected with the annular cushion 3 at the bottom of the wave spring 4; the inner diameter of the flat end to the top wave spring is 50-70 mm; the height of the flat end to the free state of the top wave spring is 15-40 mm, and the total deformation amount during compression is 10-30 mm; when the knee pad is not worn, the flat end pair top wave spring 4 is in a pre-compression state in the knee pad interlayer 2, the compression stroke is 20% -80% of the total deformation of the flat end pair top wave spring 4, and a wave spring cavity 7 is formed in the flat end pair top wave spring 4; when the knee pad 1 is worn and used, when the bending angle of the knee joint is 0 degree, the tensile force of the knee pad is concentrated on the protection ring 5 at the top of the flat-end opposite-vertex wave spring 4 through the outer layer 22 of the sandwich structure 2, the protection ring 5 converts the borne tensile force into the pressure of the flat-end opposite-vertex wave spring 4, and the flat-end opposite-vertex wave spring 4 applies larger fixed pressure to the patella 6 and the periphery thereof through the annular soft pad 3; when the bending angle of the knee joint is increased, the pressure of the knee pad on the flat end to the wave spring 4 is increased, the flat end further compresses the wave spring 4, the wave spring cavity 7 is reduced, the pressure of the flat end to the wave spring 4 on the patella 6 is increased, and the fixing effect is further enhanced;

in this embodiment, the flat-end opposite-top wave spring 4 may also be replaced by a tower spring or other elastic material or structure with the function of storing compression potential energy;

in this embodiment, the outer layer 22 of the sandwich structure 2 may also be replaced by other force exerting structures.

The above description is only for the purpose of illustrating the technical solutions of the present invention, and is not intended to limit other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art, so long as the technical solutions of the present invention are not departed from the spirit and scope of the present invention, which is to be included in the claims of the present invention.

Claims

1. A kneepad for protecting patella is characterized in that the kneepad comprises a kneepad body and a patella protection device; the patella of the knee pad body and the peripheral part of the patella adopt a sandwich structure; the patella protection device is arranged in the sandwich structure of the kneecap body; the sandwich structure comprises an inner layer and an outer layer; the inner layer of the sandwich structure is provided with an annular soft cushion for wrapping the patella; the patella protection device comprises an elastic device and a protection ring arranged on the top of the elastic device; the bottom of the elastic device is fixedly connected with the annular soft cushion; the elastic device adopts a flat end-to-top wave spring; when the patella protector is arranged on the knee, the elastic device is pre-compressed by 20-80% of the total deformation.

2. The kneepad for protecting patella according to claim 1, wherein the flat-ended wave spring has an inner diameter of 50-70 mm; the height of the flat end to the free state of the top wave spring is 15-40 mm, and the total deformation amount during compression is 10-30 mm.