A bionic foot that simulates the rotation of foot joints

Abstract

A bionic foot simulating the rotation of foot joints comprises a bionic sole, an ankle joint, a power transmission component and a bionic toe, wherein the ankle joint and the bionic toe are both connected to the bionic sole, the ankle joint and the bionic toe are both movable and rotatable on the bionic sole, the power transmission component is arranged in the sole, and the power transmission component is respectively connected to the ankle joint and the bionic toe, and the power transmission component can be used to transmit power between the ankle joint and the bionic toe. The present invention imitates the rotation principle of the foot joints of a real foot, generates power through the movement of the ankle joint, and transmits the power to the bionic toe through the power transmission component, so as to achieve a stable walking and a lighter and more comfortable gait, and bring a better physical sense to people in need, and has a wider range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of bionic feet, in particular to a bionic foot for simulating the rotation of foot joints. Background Art

[0002] The disadvantage of existing prosthetic feet is that they do not have ankle joints and toes, etc., but are just a foot-shaped component. Users will feel that their steps are very stiff when using them, and their walking gait is not so smooth. When taking steps forward, they lack the propulsion force from the toes and soles of the feet like normal limbs. When the foot is switched from the front position to the back position, the lack of an ankle joint makes the person's posture too stiff, and they will feel obvious discomfort.

[0003] Therefore, a technical solution to the above problems is needed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a bionic foot that simulates the rotation of the foot joints of a real foot, allows for smooth walking, a lighter and more natural gait, brings a better body sensation, and is more widely used.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a bionic foot that simulates the rotation of foot joints, comprising a bionic sole, an ankle joint, a power transmission component and a bionic toe, wherein the ankle joint and the bionic toe are both connected to the bionic sole, the ankle joint and the bionic toe are both movable and rotatable on the bionic sole, the power transmission component is arranged in the sole, and the power transmission component is respectively connected to the ankle joint and the bionic toe, and the power transmission component can be transmitted between the ankle joint and the bionic toe.

[0006] As a further improvement of the present invention: a receiving cavity is arranged in the bionic foot, and the power transmission component is arranged in the receiving cavity.

[0007] As a further improvement of the present invention: the power transmission component includes a first transmission gear, a second transmission gear, a third transmission gear, a first connecting member, a second connecting member and a crankshaft, the first transmission gear is meshed with the second transmission gear, the second transmission gear is meshed with the third transmission gear, one end of the first connecting member is connected to the third transmission gear, and the other end is connected to the eccentric wheel of the crankshaft, and one end of the second connecting member is connected to the eccentric wheel of the crankshaft.

[0008] As a further improvement of the present invention: the first transmission gear, the second transmission gear, the third transmission gear and the crankshaft are all mounted on the bionic foot through bearings, and can move and rotate on the bionic foot.

[0009] As a further improvement of the present invention: the other end of the second connecting member is mounted on the bottom of the bionic toe, and the second connecting member is movable and rotatable on the bionic toe.

[0010] As a further improvement of the present invention: the lower end of the ankle joint is connected to the first transmission gear, and the rotation of the ankle joint can drive the first transmission gear to rotate.

[0011] As a further improvement of the present invention: the bionic toe is hinged on the bionic sole and can rotate movably.

[0012] As a further improvement of the present invention: the bottom of the bionic foot is configured as a concave structure.

[0013] The beneficial technical effects of the present invention are as follows: the present invention imitates the rotation principle of the foot joints of a real foot, generates power through the movement of the ankle joints, and transmits the power to the bionic toes through the power transmission parts, so as to achieve a smooth walking and a lighter and more comfortable gait, bringing a better physical sensation to people in need, and having a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2 It is a schematic structural diagram of the bionic foot of the present invention.

[0016] Figure 3 It is a schematic structural diagram of the ankle joint of the present invention.

[0017] Figure 4 It is a schematic structural diagram of the power transmission component of the present invention.

[0018] Figure 5 It is a schematic structural diagram of the bionic toe of the present invention.

[0019] In the figure: 1 bionic foot, 11 accommodating cavity, 2 ankle joint, 3 power transmission member, 31 first transmission gear, 32 second transmission gear, 33 third transmission gear, 34 first connecting member, 35 second connecting member, 36 crankshaft, 361 eccentric wheel, 4 bionic toe. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0021] refer to Figures 1 to 5A bionic foot that simulates the rotation of foot joints includes a bionic sole 1, an ankle joint 2, a power transmission component 3 and a bionic toe 4, wherein the ankle joint 2 and the bionic toe 4 are both connected to the bionic sole 1, and the ankle joint 2 and the bionic toe 4 are both movable and rotatable on the bionic sole 1. A receiving cavity 11 is arranged in the bionic sole 1, and the power transmission component 3 is arranged in the receiving cavity 11. The power transmission component 3 is respectively connected to the ankle joint 2 and the bionic toe 4, and the ankle joint 2 and the bionic toe 4 can be transmitted through the power transmission component 3.

[0022] Implementation case 1:

[0023] In this embodiment, the power transmission member 3 includes a first transmission gear 31, a second transmission gear 32, a third transmission gear 33, a first connecting member 34, a second connecting member 35 and a crankshaft 36. The first transmission gear 31 is meshed with the second transmission gear 32, and the second transmission gear 32 is meshed with the third transmission gear 33. One end of the first connecting member 34 is connected to the third transmission gear 33 and moves back and forth with the rotation of the third transmission gear 33, and the other end is connected to the eccentric wheel 361 of the crankshaft 36. One end of the second connecting member 35 is connected to the eccentric wheel 361 of the crankshaft 36, and the other end of the second connecting member 35 is installed on the bottom of the bionic toe 4. The second connecting member 35 can be movably rotated on the bionic toe 4. The lower end of the ankle joint 2 is connected to the first transmission gear 31, and the rotation of the ankle joint 2 can drive the first transmission gear 31 to rotate.

[0024] The first transmission gear 31 , the second transmission gear 32 , the third transmission gear 33 and the crankshaft 36 are all mounted on the bionic foot 1 through bearings, and can be movably rotated on the bionic foot 1 .

[0025] The bottom of the bionic sole 1 is arranged as a concave structure, which makes the wearing experience similar to that of a real foot, is convenient for wearing shoes, and can play a shock-absorbing role. The bionic toe 4 is hinged on the bionic sole 1 and can rotate movably.

[0026] Working principle:

[0027] When the present invention is used, after the bionic foot is installed on the foot, people can walk in three gaits: pushing, stretching and buffering.

[0028] When pedaling, the foot is in the rear position of the human body, and the active angle of the foot is 20°+10°. The ankle joint 2 and the calf move in the forward direction of the person relative to the horizontal line of the sole of the foot, with the ankle joint 2 as the origin, and the angle between the calf and the horizontal line of the sole of the foot changes from 90° to 70° to 60°. The ankle joint 2 on the bionic foot 1 also changes from 90° to 70° to 60°. The rotation of the ankle joint 2 drives the first transmission gear 31 of the bionic foot to rotate, the first transmission gear 31 drives the second transmission gear 32 to rotate, the second transmission gear 32 drives the third transmission gear 33 to rotate, the rotation of the third transmission gear 33 causes the first connecting member 34 to move backward, drives the crankshaft 36 to work, and the crankshaft 36 works to cause the second connecting member 35 to move backward, so that the five bionic toes 4 move downward, generating thrust to lift the foot and generate a forward extension action.

[0029] When the foot is extended, the forward extension action drives the foot to extend forward and take a step under the action of the thigh and the calf. At this time, the foot is in the front position of the human body, and the active angle of the foot is 30°+20°. The ankle joint 2 and the calf are relative to the horizontal line of the sole of the foot. With the ankle joint 2 as the origin, they move toward the back of the person, and the angle between the calf and the horizontal line of the sole of the foot changes from 90° to 120° to 140°. The ankle joint 2 also changes from 90° to 120° to 140° on the bionic foot 1. The rotation of the ankle joint 2 drives the first transmission gear 31 of the bionic foot to rotate, the first transmission gear 31 drives the second transmission gear 32 to rotate, the second transmission gear 32 drives the third transmission gear 33 to rotate, and the rotation of the third transmission gear 33 causes the first connecting member 34 to move forward, driving the crankshaft 36 to work, and the crankshaft 36 works to cause the second connecting member 35 to move forward, so that the five bionic toes 4 are stretched flat or move upward (upward when going down stairs), so that the foot can land more stably and reliably.

[0030] Cushioning: when the foot moves from back to front and from front to back, due to the action of the ankle joint 2, the human body has a good cushioning effect when the body position changes, so that the user feels comfortable and stable.

[0031] The present invention has an ankle joint 2, a bionic foot 1 and a bionic toe 4, and a power transmission component 3 is arranged between the bionic toe 4 and the ankle joint 2. Power is generated by the movement of the ankle joint 2, and the power is transmitted to the bionic toe 4 through the power transmission component 3, simulating the rotation of the joints of a real foot. The use experience is relatively close to that of a real foot, achieving a smooth walking and a lighter and more comfortable gait, bringing a better physical sensation to people in need, and having a wider range of applications.

[0032] For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should be included in the protection scope of the claims of the present invention.

Claims

1. A bionic foot that simulates the rotation of foot joints, characterized in that: The invention comprises a bionic sole, an ankle joint, a power transmission member and a bionic toe, wherein the ankle joint and the bionic toe are both connected to the bionic sole, and the ankle joint and the bionic toe are both movable and rotatable on the bionic sole, the power transmission member is arranged in the sole, and the power transmission member is respectively connected to the ankle joint and the bionic toe, and the ankle joint and the bionic toe can be transmitted through the power transmission member; the power transmission member comprises a first transmission gear, a second transmission gear, a third transmission gear, a first connecting member, a second connecting member and a crankshaft, the first transmission gear is meshed with the second transmission gear, the second transmission gear is meshed with the third transmission gear, one end of the first connecting member is connected to the third transmission gear, and the other end is connected to the eccentric wheel of the crankshaft, and one end of the second connecting member is connected to the eccentric wheel of the crankshaft; the other end of the second connecting member is installed on the bottom of the bionic toe, and the second connecting member is movable and rotatable on the bionic toe; the lower end of the ankle joint is connected to the first transmission gear, and the rotation of the ankle joint can drive the first transmission gear to rotate.

2. A bionic foot for simulating foot joint rotation according to claim 1, characterized in that: A receiving cavity is arranged in the bionic sole, and the power transmission component is arranged in the receiving cavity.

3. A bionic foot for simulating foot joint rotation according to claim 1, characterized in that: The first transmission gear, the second transmission gear, the third transmission gear and the crankshaft are all mounted on the bionic foot through bearings, and can be movable and rotatable on the bionic foot.

4. The bionic foot for simulating foot joint rotation according to claim 1, characterized in that: The bionic toe is hinged on the bionic sole and can flexibly rotate.

5. The bionic foot for simulating foot joint rotation according to claim 1, characterized in that: The bottom of the bionic foot is arranged as a concave structure.

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