KR101944671B1 - Artificial foot joint with plantarflexion and dorsiflexion means - Google Patents

Abstract

The present invention relates to a keel reed part (10) fixed to a keel (1) on an upper face of the keel (1);
An elastic rubber limit (20) coupled to the surface of the keel reed (10) and having a ball hinge shaft hole (22) at the center and a dam wall (24) projecting at the right and left sides;
A rectangular ankle elastic rubber 30 positioned between the dam walls 24 and having a ball hinge shaft hole 32 at the center and a height higher than the height of the dam wall 24;
A ball hinge 42 which is received in the ball hinge shaft hole 22 and a hinge shaft 44 which integrally protrudes above the ball hinge 42 and has a diameter smaller than the diameter of the ball hinge 42 and is received in the ball hinge shaft hole 32 A ball hinge shaft 40 made of a metal material; And
The receiving wall 52 for housing the upper rim of the ankle elastic rubber 30 is protruded below the rim and the receiving wall 52 is provided with a spacing height allowing elastic deformation of the dam wall 24 and the ankle elastic rubber 30 And an upper body 50 for coupling the lower connecting socket 54 to the upper body.

Description

{Artificial foot joint with plantarflexion and dorsiflexion means}

The present invention relates to a floor adaptive ankle device.

Generally, a person with lower limb disability wears a lower limb as a human body replacement device for walking, and uses an artificial foot instead of a foot. The artificial feet are fixed or weighted, and the artificial feet are designed so that they do not interfere with flat ground walking. However, it is difficult to walk in special conditions such as when walking on various slopes or uneven ground do.

In other words, the present artificial foot is optimized for walking on a flat or low slope, and artificial foot walking on the ground with a lot of bends or protrusions has difficulty in walking due to limited movement of the joints.

In general, when walking on various slopes or uneven surfaces using artificial will, the foot joint of the artificial foot should be adapted to move according to the road surface condition, similar to the motion of the foot joint of the human body.

That is, in the case of a normal person, the ankle joint is rotated forward and backward in the heel-contact and toe-off, so that it can be adapted to the walking on the flat surface or the walking on the ramp, It is possible to adjust to the side slope or uneven ground, but it is difficult to stably walk because the angle of the artificial foot can not be controlled in the case of the patient wearing the will.

Although artificial foot has been known as an artificial foot (Korean Patent No. 10-1512233) injected with an elastic material, it is difficult to standardize it for general purpose use. An ankle angle adjusting device (Korean Patent Registration No. 10-1341958) The use of the hybrid ankle joint device (Korean Patent Laid-Open No. 10-2016-0138604) is attempted with the two-axis concept of automation and flooring, but the cost is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ground-based ankle joint device.

Another object of the present invention is to provide a joint device capable of performing the same operation as if the feet of the body are engaged / disengaged, varus / valgus, and adiabatic / abduction motion.

Another object of the present invention is to provide an ankle joint support structure for an ankle joint using an upper body having an inclined wall and an elastic rubber limiter accommodating the ankle elastic rubber so that an inclined face of the upper body is coupled with an upper convex dam wall of the elastic rubber limit, It is intended to provide a joint device that enables movement.

Another object of the present invention is to provide a high-deflection device which can be easily restored by an organic combination of an elastic rubber repeatedly depressed and restored and a ball hinge shaft rotatable in a multiple direction so as to continuously repeat the joint motion of the joints I want to.

To this end, the present invention provides a keel refining part fixed to a keel in an upper face of the keel;

An elastic rubber limit which is coupled to the surface of the keel fused joint and has a ball hinge shaft hole at its center and a dam wall protruding at left and right sides;

A rectangular ankle elastic rubber with a ball hinge shaft centered at the center between the dam walls and a height higher than the height of the dam wall;

A ball hinge shaft formed integrally with the ball hinge and having a diameter smaller than the diameter of the ball hinge and formed of a hinge shaft received in the ball hinge shaft hole; And

The receiving wall protruding below the rim for receiving the upper rim of the ankle elastic rubber, and the receiving wall comprising an upper body which has a separable height allowing elastic deformation of the dam and the ankle elastic rubber, Provides an adaptive ankle platform.

As described above, the present invention provides a floor applying type ankle joint device.

The present invention provides a joint device capable of performing the same operation as if the feet of the body are engaged / dislocated, varus / valgus, and adduction / abduction movement.

The present invention uses an upper body having a tapered wall and an elastic rubber limiter accommodating the ankle elastic rubber so that the inclined surface of the upper body restricts the excessive joint movement by engaging with the upper convex damper of the elastic rubber limit, I will.

The present invention can be easily restored by an organic bond between an elastic rubber repeatedly pressed and restored and a ball hinge shaft rotatable in a multiple direction so as to continuously repeat the joint motion of the joint in the stance phase of the joint, Lt; / RTI >

FIG. 1 is a photograph of an ankle region illustrating the dorsal flexion and inner and outer half of the present invention,
FIG. 2 is a graph showing the dorsiflexor curvature and the inner and outer half angle graphs according to the stance and divergence periods of FIG. 1,
FIG. 3 is a view showing the stance of the present invention,
4 is an exploded perspective view of the present invention,
FIG. 5 is an exploded perspective view in which the interval between the components in FIG. 4 is reduced,
6 is a perspective view of the assembled state of the present invention,
FIG. 7 is a vertical sectional view of FIG. 6,
FIG. 8 is an explanatory view of the buckling /
Fig. 9 is an explanatory view of the operation in the compass /
10 is a diagram explaining the abduction / abduction direction operation of the present invention.

FIG. 1 is a photograph of an ankle explaining the dorsal flexion and inner and outer half of the present invention, and dorsiflexion (dorsal flexion) is called a dorsal motion in an instep direction of the ankle joint. The normal operating range is 0 to 70 degrees. Conversely, movement in the direction of the sole is referred to as dorsiflexion.

Fig. 2 is a graph showing a dorsiflexor curve and an inner and outer half angle according to the stance and diaper of Fig. 1, and Fig. 3 is a gait diagram showing the legged heel of the leg, Is referred to as a Gait cycle. The walking cycle has two cycles. It consists of a stance phase from the grounding of the heel to the falling of the toe from the supporting surface and a lifting phase from the toe falling from the supporting surface to the grounding of the heel of the coaxial have. The left and right angles of incidence are partially overlapped. In general, 60% of the gait is stomach and 40% is erect.

As shown in Figs. 4 to 10, the present invention provides a keel reed part 10 fixed to a keel material 1 on an upper surface of a keel material 1;

An elastic rubber limit (20) coupled to the surface of the keel reed (10) and having a ball hinge shaft hole (22) at the center and a dam wall (24) at the left and right sides;

A rectangular ankle elastic rubber 30 positioned between the dam walls 24 and having a ball hinge shaft hole 32 at the center and a height higher than the height of the dam wall 24;

A ball hinge 42 which is received in the ball hinge shaft hole 22 and a hinge shaft 44 which integrally protrudes above the ball hinge 42 and has a diameter smaller than the diameter of the ball hinge 42 and is received in the ball hinge shaft hole 32 A ball hinge shaft 40 made of a metal material; And

The receiving wall 52 for housing the upper rim of the ankle elastic rubber 30 is protruded below the rim and the receiving wall 52 is provided with a spacing height allowing elastic deformation of the dam wall 24 and the ankle elastic rubber 30 And an upper body 50 for coupling the lower connection socket 54 to the upper portion.

The center of the top surface of the keel fringed part 10 forms a concave groove 12 which is concave downward and the upper surface of the concave groove 12 is connected to the ball hinge shaft 40 by a ball hinge return The rubber 60 is added.

The upper surface of the ball hinge shaft 40 of the ball hinge shaft 40 is convex curved surface and the lower surface of the ball hinge shaft 40 is in plane contact with the surface of the ball hinge returning rubber 60.

The receiving wall 52 of the upper body 50 is inclined at an inclined wall 56 having a long front side and a short rear side and both side walls connecting the front and rear sides. It forms a curved shape.

The inclined wall 56 and the dam wall 24 are spaced apart from each other,

The forward portion is raised so that the front portion of the inclined wall 56 is located at a position lower than the horizontal plane of the upper center of the dam wall 24 to limit the inclination / Limit function.

According to the present invention thus constituted, the keel finished part 10 and the elastic rubber limit 20 are fixed on the keel material 1 shown in Figs. 6 and 7 by using a coupling means such as a screw or bonding. Of course, the ball hinge returning rubber 60 is placed in the concave groove 12 at the center of the keel reed assembly 10, and then the ball hinge shaft 40 is positioned, and the ball hinge shaft 40 of the ball hinge shaft 40 is rotated, Is fixed to the ball hinge shaft (220).

The hinge shaft 44 of the ball hinge shaft 40 exposed by the ball hinge shaft hole 22 of the elastic rubber limit 20 is connected to the hinge shaft 44 through the ball hinge shaft hole 32 of the ankle elastic rubber 30, ) Of the floor space wall.

8, the upper body 50 forms a sloped wall 56 with a lower bottom height different from that of the receiving wall 52, and the dam wall 24 of the elastic rubber limit 20 forms a convex curved surface. (Direction of the arrow) and the angle of motion of the joint in the direction of arrows (opposite direction of the arrow).

The present invention also functions to enable joint movement in the varus / valgus directions as shown in Fig. In this case, the inclined wall 56 due to the receiving wall 52 of the upper body 50 is moved in the forward and backward directions (the arrow direction of (a)) and the left and right actions ), And thus it functions to safely perform joint movement by blocking the excessive varus / valgus joint motion. Since the ball hinge shaft 40 of the ball hinge shaft 40 has a convex shape and the corresponding ball hinge shaft ball hole 22 forms a curved surface, the hinge shaft 44 rotates in the front, The hinge of the joint which can adapt to the ground is performed. The ball hinge 42 has a bottom surface that is flat and has a flat surface in contact with the upper surface of the ball hinge returning rubber 60 accommodated in the concave groove 12 and has a ball hinge 42 integrally formed with the ball hinge 42, The shaft 40 makes the return rubber 60 return to the upper part by the force to be restored, shortens the return time, and gives the user a cushion feeling to reduce the use fatigue.

The present invention is also characterized in that the upper body 50 is rotated in the mutually opposite directions corresponding to the keel finished part 10 and the elastic rubber limit 20 in the state of (a) To allow joint motion in abduction and adduction direction. In this case, the inclined wall 56 contacts the convex curved surface above the dam wall 24 to block the rotation, thereby preventing excessive abduction and joint movement in the adduction direction, thereby providing stability that can be adapted to the ground surface. At the same time, the ankle elastic rubber 30, the elastic rubber limit 20 accommodating the elastic rubber 30 in the lower portion, and the upper body 50 accommodating in the upper portion are formed in the longitudinal direction to increase the joint motion angles in the abduction and adduction direction, Since the twisting force is increased by the direction, the returning time is also shortened, so that the joint motion in the abduction direction and the adduction direction can be repeatedly used.

A ball hinge shaft (40), a ball hinge (44), a hinge shaft (50), and a hinge shaft (50), the rubber hinge shaft (50) An upper body 52, a receiving wall 54, a lower connecting socket 56, an inclined wall 60, a ball hinge return rubber

Claims (5)

A keel fringing part (10) fixed to the keel material (1) on the upper face of the keel material (1);
An elastic rubber limit (20) coupled to the surface of the keel reed (10) and having a ball hinge shaft hole (22) at the center and a dam wall (24) at the left and right sides;
A rectangular ankle elastic rubber 30 positioned between the dam walls 24 and having a ball hinge shaft hole 32 at the center and a height higher than the height of the dam wall 24;
A ball hinge 42 which is received in the ball hinge shaft hole 22 and a hinge shaft 44 which integrally protrudes above the ball hinge 42 and has a diameter smaller than the diameter of the ball hinge 42 and is received in the ball hinge shaft hole 32 A ball hinge shaft 40 made of a metal material; And
The receiving wall 52 for housing the upper rim of the ankle elastic rubber 30 is protruded below the rim and the receiving wall 52 is provided with a spacing height allowing elastic deformation of the dam wall 24 and the ankle elastic rubber 30 And an upper body (50) for coupling the lower connection socket (54) to the upper portion;
The receiving wall 52 of the upper body 50 has a slanting wall 56 having a slanting front and a rear slanting wall and a front slanting wall 56 and a rear slanting wall 56, Wherein the ankle joint is formed in a shape of a circle.
The method according to claim 1,
The center of the upper surface of the keel fringed part 10 forms a concave groove 12 having a concave downward and the upper surface of the concave groove 12 has a ball hinge returning rubber 60) is attached to the ankle joint.
The foot auger according to claim 2, wherein the upper surface of the ball hinge (42) of the ball hinge shaft (40) is a convex curved surface and the lower surface has a plane surface contact with the surface of the ball hinge returning rubber (60) .
delete 5. The method of claim 1, wherein the ramp wall (56) and the dam wall (24) are spaced apart,
The forward portion is raised so that the front portion of the inclined wall 56 is located at a position lower than the horizontal plane of the upper center of the dam wall 24 to limit the inclination / Wherein the ankle joint is configured to have a limited function.

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