KR101801303B1

KR101801303B1 - Prosthetic foot and manufacturing method thereof

Info

Publication number: KR101801303B1
Application number: KR1020160007098A
Authority: KR
Inventors: 윤종헌; 송영남
Original assignee: 한양대학교 에리카산학협력단
Priority date: 2016-01-20
Filing date: 2016-01-20
Publication date: 2017-11-24
Also published as: KR20170087297A

Abstract

The shoulder foot according to the present invention includes: an upper plate having a shape bent along a longitudinal direction; And a lower plate coupled to the upper plate and having a shape bent in the longitudinal direction, wherein each of the upper plate and the lower plate has the same thickness along the longitudinal direction, and the upper plate is provided with at least one auxiliary An upper plate is provided, and at least one auxiliary bottom plate stacked on a part of the lower plate is provided on the lower plate. According to an embodiment of the present invention, a plate having the same thickness is formed into a metal mold or the like, differently from the prior art in which the thickness along the longitudinal direction is changed by hand, It is possible to conveniently manufacture the foot having the thickness, so that the manufacturing cost of the foot can be greatly reduced.

Description

{PROSTHETIC FOOT AND MANUFACTURING METHOD THEREOF}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a willing foot, and more particularly,

The will is used as a substitute for legs cutting legs that have a part of the leg cut. When a person with a severed limb that wears a prosthesis wears the bottom of a pants or the like, it appears to be similar to a normal person in appearance, and it is possible to walk without using a stick or the like even if there is inconvenience of limping.

At this time, the limb (or prosthesis) plays a role of connecting the limb amputee with other limb parts by cutting a part of the limb. In other words, the foot (prosthetic leg) plays the role of the foot of the person with limb amputee, so that the limb amputee can walk easily while walking on the ground.

Currently, the wrist is developed in various forms to broaden the natural gait feel and movement range of motion such as the foot of the disabled person. Rather than using plastics and other materials, the feet are being manufactured using carbon fiber composites that are elastic and have little deformation. On the other hand, the thickness and the curvature in the longitudinal direction of the shoulder foot should be changed according to the body shape of the user, stepping, and the like. However, in order to vary the longitudinal thickness or curvature of the stepped foot produced using the carbon fiber composite material, the person who manufactures the stepped foot must perform manual operation. This is because, in contrast to the foot of a foot made of a plastic material, the foot of a foot made of a carbon fiber composite material can not be formed into a different thickness or curvature in a longitudinal direction by using a mold. In the case of the foot of the carbon fiber composite material manufactured by hand, the manufacturing cost of the foot is very high, about 2,000,000 to 4,000,000 won.

Therefore, it is required to develop a stepping stone that can greatly reduce the cost of manufacturing the foot of a carbon fiber composite material.

The present applicant has proposed the present invention in order to solve the above-mentioned problems, and as a prior art document related thereto, Korean Patent Registration No. 10-0362736 (entitled " energy storage type keel, November 14, 2002).

It is an object of the present invention to provide a will foot and a method of manufacturing the same which can significantly reduce the manufacturing cost of the will foot by conveniently laminating several discs having the same thickness and having different thicknesses along the length direction .

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to the present invention, the above object can be achieved by an upper plate having a shape bent along the longitudinal direction; And a lower plate coupled to the upper plate and having a shape bent in the longitudinal direction, wherein each of the upper plate and the lower plate has the same thickness along the longitudinal direction, and the upper plate is provided with at least one auxiliary An upper plate is provided and the lower plate is provided with at least one auxiliary lower plate laminated on a part of the lower plate.

Each of the auxiliary top plate and the auxiliary bottom plate may have the same thickness along the longitudinal direction.

The upper plate and the lower plate may have the same curvature along the longitudinal direction.

The upper plate and the lower plate are provided by cutting an unnecessary portion after forming an original plate having the same shape and dimensions, and when the upper plate and the lower plate are fastened, any one of them can be turned upside down.

The auxiliary top plate is stacked on a portion where the stress of the top plate is concentrated, and the auxiliary bottom plate may be stacked on a portion where the stress of the bottom plate is concentrated.

And an adapter provided at an upper portion of the upper plate to connect the lower leg to other lower parts.

According to another aspect of the present invention, there is provided a method of manufacturing a footstep according to an embodiment of the present invention includes: forming a plurality of circular plates bent along a longitudinal direction and having the same shape and dimensions; Cutting the unnecessary portions of the plurality of discs to form an upper plate and a lower plate; And engaging the upper plate and the lower plate by turning one of the upper plate and the lower plate upside down; .

The original plate is formed of the same metal mold, and the upper plate and the lower plate may have the same curvature along the longitudinal direction.

The upper plate may be provided with at least one auxiliary top plate laminated on a part of the upper plate, and the lower plate may be provided with at least one auxiliary bottom plate laminated on a part of the lower plate.

In the present invention, the plate and the method for manufacturing the same are different from the prior art in which the thickness along the longitudinal direction is changed by hand by molding the plate having the same thickness into a die or the like, It is possible to conveniently manufacture the foot with different thickness according to the thickness of the foot.

In addition, since the upper plate, the lower plate, the auxiliary upper plate, and the auxiliary lower plate that constitute the will foot can be formed through the same die, it is possible to mass-produce the foot plate.

1 is a perspective view of a wrist foot according to an embodiment of the present invention.
FIG. 2 is a side view of the foot of the foot of FIG. 1. FIG.
FIG. 3 is a view showing an auxiliary top plate and an auxiliary bottom plate stacked on the top plate and the bottom plate shown in FIG. 1;
FIG. 4 is a side view of the foot of the foot of FIG. 3. FIG.
Fig. 5 is a view showing a state where the adapter bracket is provided on the foot of the will shown in Fig. 1. Fig.
6 is a flow chart for explaining a method of manufacturing the foot of the foot according to the embodiments of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The drawings are schematic and illustrate that they are not drawn to scale. The relative dimensions and ratios of the parts in the figures are shown exaggerated or reduced in size for clarity and convenience in the figures, and any dimensions are merely illustrative and not restrictive. And to the same structure, element or component appearing in more than one drawing, the same reference numerals are used to denote similar features.

The embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various variations of the drawings are expected. Thus, the embodiment is not limited to any particular form of the depicted area, but includes modifications of the form, for example, by manufacture.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

First, a willet 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

As shown in FIGS. 1 to 4, the shoulder foot 100 according to an embodiment of the present invention is worn by a person with a disability. In other words, the wrist foot 100 plays a role of a foot in a will part 1 worn by a person with a disability in which the femur and lower legs are severed. The shoulder feet 100 include an upper plate 110 having a curved shape along the longitudinal direction and a lower plate 120 coupled to the upper plate 110 and having a shape bent along the longitudinal direction. For convenience of explanation, a plate provided with an adapter 130 to be described later is referred to as an upper plate and a plate not provided with the adapter 130 is referred to as a lower plate. However, a plate provided with the adapter 130 is referred to as a lower plate And a plate on which the adapter 130 is not provided can be referred to as a top plate. In addition, the footrest 100 according to an embodiment of the present invention may be said to belong to an energy-storing type of footsteps for storing energy.

1 to 4, the upper plate 110 is a member performing a role as a foot of a person with amputation. In other words, the top plate 110 has a shape in the form of a plate bent in a pattern designed in advance along the longitudinal direction. The top plate 110 according to an exemplary embodiment of the present invention is preferably formed of carbon-carbon composites, but the present invention is not limited thereto. Accordingly, the upper plate 110, which is formed in a curved shape similar to that of a person and a foot, can easily perform the role of the foot, so that it is possible to facilitate the walking of the person with the amputee.

Referring to Figs. 1 to 4, the lower plate 120 is a member that serves as the sole of a person with a severed disability. In other words, the lower plate 120 is formed in the same direction as the upper plate 110, i.e., in the form of a plate having a long length in the longitudinal direction. At this time, the lower plate 120 directly contacts the ground with a plate having a bent shape of a predetermined pattern along the longitudinal direction. The lower plate 120 according to an embodiment of the present invention is preferably formed of carbon-carbon composites like the upper plate 110, but is not limited thereto. As described above, the lower plate 120, which is formed in a curved shape similar to that of the human and sole, and is made of a carbon fiber composite material, can easily perform the role of the sole, thus making it easier for the person with limb amputee to walk. Further, the lower plate 120 is engaged with the upper plate 110 to serve as a foot of the disabled person. 1 and 3, the lower plate 120 according to an embodiment of the present invention is fastened to the upper plate 110 by a fastening method using a bolt or the like. However, as shown in the present invention, the upper plate 110 and the lower plate 120 are only required to be fastened together with bolts or the like, and thus the present invention is not limited thereto.

The footrest 100 according to an embodiment of the present invention further includes an adapter 130. [ The adapter 130 is a member for connecting the wrist 100 to a part to be worn by a wearer with a leg cut. The adapter 130 may be of the same shape as the will part, which is generally used for the will foot, and may be modified according to the shape of the will of the person with the amputee.

Also, the shoulder foot 100 according to an embodiment of the present invention further includes a breakage prevention plate 140. The breakage prevention plate 140 is a kind of reinforcement that is attached to a portion where the will foot 100 is likely to be damaged. 1 and 2, the breakage prevention plate 140 may be provided between the upper plate 110 and the lower plate 120. As shown in FIGS. 3 and 4, the upper plate 110 110 and an auxiliary bottom plate 122 to be described later. The breakage prevention plate 140 is made of a polyurethane material. The breakage prevention plate 140 is formed in a wedge shape and is sandwiched between the upper plate 110 and the lower plate 120 or between the upper plate 110 and the auxiliary lower plate 122. The breakage prevention plate 140 formed in the wedge shape is sandwiched between the upper plate 110 and the lower plate 120 or between the upper plate 110 and the auxiliary lower plate 122 in an adhesive manner. In other words, an adhesive is applied to the upper end surface and the lower end surface of the wedge-shaped breakage prevention plate 140, and the breakage prevention plate 140 in the form of a wedged wedge is pushed into the gap between the upper plate 110 and the lower plate 120, (110) and the auxiliary bottom plate (122). Accordingly, the auxiliary top plate 112, the top plate 110, the auxiliary bottom plate 122 of the willing foot 100, which is forced to have a weak strength due to a load applied from an under-cut disabled person or an external force such as an external impact, The durability of the whole of the wrist 100 is improved because the breakage prevention plate 140 is positioned at the joint portion of the lower plate 120 and the lower plate 120, that is, the portion where the stress is concentrated.

5, an adapter bracket 150 is provided between the adapter 130 and the upper plate 110. In addition, More specifically, an adapter bracket 150 is provided between the adapter 130 and the auxiliary top plate 112. The adapter bracket 150 is formed in the shape of a quadrangle to support the adapter 130. The shape of the adapter bracket 150 may be modified in accordance with the shape of the adapter 130. [ The adapter bracket 150 is provided in a length shorter than the longitudinal length of the auxiliary upper plate 112 and the auxiliary lower plate 122 stacked on the upper plate 110 and the lower plate 120. The adapter bracket 150 is made of a plastic material different from the upper plate 110, the lower plate 120, the auxiliary upper plate 112 and the auxiliary lower plate 122. The adapter bracket 150 allows the adapter 130 to be stably positioned on the top plate 110 and the auxiliary top plate 112 so that it can be easily connected to other shoulder parts 1 that are connected to the wrist 100.

3 and 4, an auxiliary upper plate 112 and an auxiliary lower plate 122 are provided on the upper plate 110 and the lower plate 120, respectively, of the wrist 100 according to an embodiment of the present invention. do.

3 and 4, the upper plate 110 is provided with an auxiliary upper plate 112, and the lower plate 120 is provided with an auxiliary lower plate 122. Specifically, at least one auxiliary top plate 112 is laminated on a part of the top plate 110. [ Also, at least one auxiliary bottom plate 122 is laminated on a part of the lower plate 120. Here, the auxiliary upper plate 112 according to an embodiment of the present invention is provided at the upper end of the upper plate 110, and the auxiliary lower plate 122 is provided at the upper end of the lower plate 120, but it is not limited thereto. It is preferable that the auxiliary upper plate 112 and the auxiliary lower plate 122 are stacked on a portion where stress is concentrated on the upper plate 110 and the lower plate 120. Because the wrist leg 100 according to an embodiment of the present invention is connected to the will part 1 of the person with the limb amputee and is in direct contact with the ground, it facilitates the walking of the limb amputee. Since the shoulder foot 100 supports the entire body of the disabled person, it is inevitable that a portion where the stress is concentrated. That is, when the stress concentrated on the wrist 100 is not appropriately dispersed or can not withstand the stress, cracks are generated on the wrist 100, or the wrist 100 is broken, People with disabilities can get hurt. Accordingly, the auxiliary upper plate 112 and the auxiliary plate 112 are provided at the respective portions of the upper and lower plates 110 and 120 where the stress is concentrated, such as a portion where the upper plate 110 and the lower plate 120 are coupled, The lower plate 122 should be laminated. At this time, the number of the auxiliary upper plate 112 and the auxiliary lower plate 122 stacked on the upper plate 110 and the lower plate 120 may vary depending on the magnitude of the stress concentrated on the wrist 100.

2 and 4, each of the upper plate 110 and the lower plate 120 has an auxiliary top plate 112 and a lower plate 110, which have the same thicknesses T1 and T2 along the longitudinal direction and are stacked on the top plate 110, Each of the auxiliary bottom plates 122 stacked on the base plate 120 has the same thickness t1, t2 along the longitudinal direction.

Here, the upper plate 110, the lower plate 120, the auxiliary upper plate 112, and the auxiliary lower plate 122 are all formed using one die. A manufacturing process of the upper plate 110, the lower plate 120, the auxiliary upper plate 112, and the auxiliary lower plate 122 will be briefly described. A single machine, that is, one die (mold) Mold the disc. An unnecessary portion is cut to form the upper plate 110, the lower plate 120, the auxiliary upper plate 112, and the auxiliary lower plate 112 according to the role of the molded base plate to perform in the foot plate 100. [ Thus, the upper plate 110, the lower plate 120, the auxiliary upper plate 112, and the auxiliary lower plate 122 have the same thickness (T1 = T2 = t1 = t2). The upper plate 110 and the lower plate 120 have the same curvature (R1 = R2, r1 = r2) along the longitudinal direction as shown in Figs. 2 and 4. Furthermore, the auxiliary top plate 112 and the auxiliary bottom plate 122, which are formed of the same original plate, also have the same curvature along the longitudinal direction.

It is preferable that the auxiliary top plate 112 and the auxiliary bottom plate 122 stacked are shorter than the lengths of the top plate 110 and the bottom plate 120 in the longitudinal direction. This is because the auxiliary upper plate 112 and the auxiliary lower plate 122 stacked on the upper plate 110 and the lower plate 120 are different from the upper plate 110 and the lower plate 120 which function as a foot, Is a member that is stacked on the concentrated region. The auxiliary upper plate 112 and the auxiliary lower plate 122 may be formed to have the same length as the longitudinal length of the upper plate 110 and the lower plate 120. However, To a desired size.

1 to 4, the will foot 100 according to an embodiment of the present invention reverses any one of the upper plate 110 and the lower plate 120 and tightens them. In other words, only the lower plate 120 is turned over while the upper plate 110 remains, and the lower end face of the upper plate 110 and the lower end face of the lower plate 120 are contacted and fastened. On the other hand, the upper plate 110 and the lower plate 120, which are mutually coupled to each other, have different longitudinal lengths. As described above, the upper plate 110 plays the role of the foot of the disabled person with lower limbs, and the lower plate 120 serves as the sole of the foot. More specifically, the upper plate 110 serves as a foot extending from the toe of the disabled person to the ankle, and the lower plate 120 serves as a soles of the feet and a heel excluding the toes. Accordingly, in order to reduce the production cost of the wrist 100 and facilitate the walking of the disabled person by reducing the weight, the original plate formed to perform the role of the upper plate 110 in one metal mold is a toe- The unnecessary remaining portion is cut while the length is left, and the disc formed to perform the role of the lower plate 120 cuts the unnecessary remaining portion while leaving the soles of the sole and the heel portion.

1 to 6, a method of manufacturing the footrest 100 according to an embodiment of the present invention will be described.

As described above, the wrist 100 is a part to be worn by a person with lower limb disability.

6, a method of manufacturing a footstep according to an embodiment of the present invention includes forming a plurality of circular plates S110, providing a plurality of circular plates formed by the upper and lower plates 110 and 120, (S120) and engaging the upper plate 110 and the lower plate 120 (S130).

Referring to FIGS. 1 to 6, in step S110 of forming an original plate, a plurality of original plates bent along the longitudinal direction and having the same shape and dimensions are formed. A plurality of circular plates having the same shape and dimensions are formed by using one machine, that is, one mold (frame). At this time, as described above, the plurality of discs are formed, and the shape and dimensions of the plurality of discs vary depending on the shape and the index of the will foot 100 to be manufactured. Since the disk to be the upper plate 110 and the lower plate 120 is formed of a carbon fiber composite material, it is light and easily deformed and has elasticity, so that it can be conveniently used for walking on a person with a disability.

1 to 6, in the step of providing the upper plate 110 and the lower plate 120, the upper plate 110 and the lower plate 120 are formed by using the original plate formed in the step of forming the original plate (S110) . Specifically, the upper plate 110 is provided by cutting unnecessary portions of the original plate formed by one mold, and the lower plate 120 of the lower limb is provided. Here, the top plate 110 is provided with at least one auxiliary top plate 112 stacked on a part of the top plate 110. The lower plate 120 is also provided with at least one auxiliary bottom plate 122 laminated on a part of the lower plate 120. [ At this time, it is preferable that the upper plate 110, the lower plate 120, the auxiliary upper plate 112, and the auxiliary lower plate 122 are formed by cutting a plurality of discs, and their lengths in the longitudinal direction are different from each other. For example, the upper plate 110 only needs to extend from the toes of the disabled person to the ankles, and the lower plate 120 requires only the portion from the sole to the heel of the disabled person. Since the auxiliary upper plate 112 and the auxiliary lower plate 122 are laminated on the portions concentrated on the stresses of the upper plate 110 and the lower plate 120, they are formed to be smaller than the longitudinal lengths of the upper plate 110 and the lower plate 120 . Accordingly, the unnecessary portions are cut to match the role of each of the plural circular plates formed to have the same shape and dimensions through one metal mold, so that the upper plate 110, the lower plate 120, the auxiliary upper plate 112, 122 are formed.

A breakage prevention plate 140 is provided between the upper plate 110 and the auxiliary lower plate 122. In other words, the breakage prevention plate 140 is formed in a wedge shape and is sandwiched between the auxiliary upper plate 112 and the upper plate 110, between the auxiliary lower plate 122 and the lower plate 120.

Referring to FIGS. 1 to 6, the upper plate 110 and the lower plate 120 are fastened in the step S130 of fastening the upper plate 110 and the lower plate 120 to each other. Concretely, when the lower plate 120 is fastened to the lower end surface of the upper plate 110 in the step of mutually fastening (S130), any one of the upper plate 110 and the lower plate 120 is turned upside down. As described above, for example, the upper plate 110 serves as a foot that is connected to the ankle from the toe among the feet of the disabled person, and the lower plate 120 serves as a sole from the foot to the heel except for the toes do. In addition, the upper plate 110 and the lower plate 120 are formed in the same shape and size with the same thickness and curvature in the step of forming the original plate (S110). In other words, if the upper plate 110 serving as a footstep is not turned upside down in a step S130, the lower plate 120 serving as the sole and the heel is turned upside down so that the lower plate 110 120 are mutually fastened together.

According to the above-described constitution and method, the willetail foot 100 and the method of manufacturing the same according to the embodiment of the present invention are different from the prior art in which the thickness along the longitudinal direction is changed by hand, After molding, the molded plate is appropriately laminated, so that the foot having different thicknesses along the longitudinal direction can be conveniently manufactured, so that the manufacturing cost of the foot of the foot can be greatly reduced.

In addition, the footrest 100 and the method of manufacturing the same according to an embodiment of the present invention can form the upper and lower plates, the auxiliary upper plate and the auxiliary lower plate constituting the foot of the foot through the same die, .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

100: Will foot
110: top plate 112: auxiliary top plate
120: lower plate 114: auxiliary lower plate
130: Adapter
150: Adapter bracket

Claims

A plurality of discs having the same shape and dimensions and including a toe portion having a first curvature and a heel portion having a second curvature different from the first curvature are formed by the same mold The present invention relates to a will foot made using the plurality of discs,
An upper plate provided by cutting the heel portion from the original plate;
A lower plate provided to cut the toe portion from the original plate and to be coupled with the upper plate in an inverted manner;
An auxiliary top plate which is provided by cutting the toe portion and the heel portion from the original plate and is stacked and fastened to a portion where stress of the top plate is concentrated; And
An auxiliary bottom plate which is provided by cutting the toe portion and the heel portion of the original plate and is stacked and fastened to a portion where the stress of the bottom plate is concentrated on the reverse side with respect to the auxiliary top plate;
/ RTI >
An upper portion of the auxiliary top plate is provided with an adapter for connecting the foot portion to other parts,
Wherein the adapter has a lower surface coupled to an upper surface of the auxiliary top plate,
Wherein the auxiliary top plate and the auxiliary bottom plate are fastened to each other so that the upper plate and the lower plate overlap each other at a portion where the upper plate and the lower plate, where stresses of the upper plate and the lower plate are concentrated, are fastened to each other.

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Forming a plurality of discs by the same mold so as to have the same shape and dimensions as those of the toe portion having the first curvature and the heel portion having the second curvature different from the first curvature, ;
Preparing a top plate by cutting the heel portion from the original plate, cutting the toe portion from the original plate to form a bottom plate;
Fastening the upper plate and the lower plate to each other while fastening the lower plate to the upper plate in an inverted position;
Cutting the heel portion and the toe portion from the original plate to form an auxiliary top plate and an auxiliary bottom plate;
Stacking and fastening the auxiliary top plate on a portion where the stress of the top plate concentrates and stacking and fastening the auxiliary top plate on a portion where the stress of the bottom plate is concentrated on the upside of the auxiliary top plate; And
Tightening an adapter for connecting other parts to be worn by a person with a disability to the upper part of the auxiliary top plate; , &Lt; / RTI &
Wherein the adapter has a lower surface coupled to an upper surface of the auxiliary top plate,
Wherein the auxiliary top plate and the auxiliary bottom plate are fastened to each other so that the upper plate and the lower plate overlap with each other at a portion where the upper plate and the lower plate, where stresses of the upper plate and the lower plate are concentrated, are fastened to each other.

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