Waterproof light artificial foot

Abstract

The invention discloses a waterproof light artificial foot in the technical field of artificial limbs, and the waterproof light artificial foot comprises an artificial foot outer layer, a foot core and a static ankle connecting disc, the artificial foot outer layer wraps the foot core, a keel and a weight reducing groove are additionally arranged on the foot core, and the keel and the weight reducing groove are matched with each other, so that the structural supporting strength of the foot core is effectively guaranteed, the dead weight of the artificial foot is effectively reduced, and the service life of the artificial foot is prolonged. Further, the stump load of the user is reduced, the amount of exercise of the wearer during walking is reduced, and the disabled can use the device more effortlessly; the static ankle connecting disc tightly covers the top of the foot core and the top of the outer layer of the artificial foot, so that the foot core is effectively waterproof, a central water tank and a side water tank are additionally arranged, water at the top of the foot core can be guided and drained away, water vapor can be conveniently volatilized, water is effectively prevented from being deposited between the foot core and the static ankle connecting disc, the static ankle connecting disc and a butt joint bolt are effectively prevented from being rusted, and the service life of the foot core is prolonged. The whole structure of the foot core can be conveniently kept dry, the service life of the whole artificial limb is prolonged, and the artificial foot is more convenient to maintain and clean.

Description

Technical Field

[0001] The invention relates to the technical field of artificial limbs, in particular to a waterproof and lightweight artificial foot. Background Art

[0002] Prosthesis is an artificial prosthesis specially designed and manufactured by engineering technology to make up for the limbs of amputees or incomplete limbs. Its main function is to replace some functions of the lost limbs and restore a certain degree of self-care and work ability for amputees.

[0003] Prostheses are divided into upper and lower limbs. Lower limb prostheses can be divided into several categories according to the different amputation planes of the lower limbs: foot and ankle prostheses, calf prostheses, thigh prostheses, and hip joint amputation prostheses. Regardless of the plane of amputation, the prosthesis can achieve the purpose of supporting the body and walking.

[0004] The prosthetic foot is also called a half-foot or prosthetic foot. Regardless of the amputation plane, a prosthetic foot is required. Common prosthetic feet include single-axis feet, universal feet, and static ankle feet.

[0005] The structure of a static ankle foot is generally a foot core for support inside, and a polyurethane prosthetic foot outer layer wrapped outside. The top of the foot core for support also needs to be installed with a static ankle connecting plate, that is, a cover plate at the ankle, and then connected to the leg tube at the upper end through the static ankle connecting plate. The function of the static ankle connecting plate is to facilitate easy alignment and disassembly and assembly with other structures on the upper end. Therefore, there is a four-sided square cone-shaped connecting bolt on the top of the static ankle connecting plate for clamping. It is a common structure of prosthetic feet. For easy installation, this bolt needs to protrude from the top of the prosthetic foot, and the bottom of the connecting bolt needs to be connected to the foot core of the static ankle foot as a whole, which is used to connect the prosthetic foot to the upper prosthesis or residual limb as an overall force-bearing structure.

[0006] The core of the static ankle foot is usually made of plastic or wood to make the artificial foot lighter, but the bolts can only be made of stainless steel. The wooden core is greatly affected by temperature and humidity, especially when it is accidentally soaked in water on rainy days, it is easy to swell up due to water, and it is easy to crack after drying, resulting in a reduced service life. The core of the plastic product is easy to accumulate water, and the plastic core is not firmly connected to the outer layer of the artificial foot made of polyurethane, and it is easy to peel off from the outer layer of the external artificial foot, causing the outer layer of the polyurethane artificial foot to separate from the core, especially after being wet or soaked in water. In life, the top of the core of the artificial foot is easily flushed, especially when washing, it is inevitable that water splashes on the artificial foot, and plastic and silicone are not water-absorbent, and water droplets will accumulate in the gap of the core. Long-term accumulation of water will corrode the bolts, and the gap between the static ankle connection plate and the core of the foot will also penetrate water. Long-term water accumulation will cause the static ankle connection plate to corrode or slip, which is not conducive to the long-term use of the artificial foot.

[0007] Based on this, the present invention designs a waterproof and lightweight artificial foot to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide a waterproof and lightweight artificial foot. The device adds a keel and a weight-reducing groove on the foot core. The two cooperate with each other to effectively ensure the structural support strength of the foot core and effectively reduce the weight of the artificial foot, thereby reducing the load on the user's residual limb, reducing the amount of exercise when the wearer walks, and making it more labor-saving for disabled people to use; the device also adds a central water tank and a side water tank, which can divert and drain water from the top of the foot core, and facilitate the volatilization of water vapor, effectively avoiding water accumulation between the foot core and the static ankle connecting plate, effectively avoiding rust on the static ankle connecting plate and the docking bolts, and also facilitating keeping the overall structure of the foot core dry, thereby increasing the service life of the entire prosthesis and making the artificial foot easier to maintain and clean.

[0009] The present invention is implemented as follows: a waterproof lightweight artificial foot, comprising:

[0010] The outer layer of the artificial foot, the foot core, the static ankle connection plate, the central sink and the keel;

[0011] The foot core is an integral structure;

[0012] A main locking hole is vertically provided at the center of the joint surface at the top of the foot core, and a bottom locking hole is vertically provided on the bottom supporting surface of the foot core. The bottom locking hole is connected to the main locking hole, and the axes of the main locking hole and the bottom locking hole coincide with each other;

[0013] The static ankle connection plate is a buckle cover, a quadrangular pyramid is protruding upward from the top of the static ankle connection plate, the interior of the quadrangular pyramid is a threaded hole, the exterior of the quadrangular pyramid is closed, the threaded hole opening of the quadrangular pyramid is arranged at the bottom of the static ankle connection plate, and a docking bolt is vertically arranged inside the main locking hole; the static ankle connection plate is tightly covered on the top of the foot core, the docking bolt passes through the bottom locking hole and the main locking hole from bottom to top in sequence, and the upper end of the docking bolt is locked in the threaded hole at the bottom of the static ankle connection plate;

[0014] A central water tank and a side water tank are provided at the top of the foot core, the front-to-back axis of the central water tank coincides with the front-to-back axis of the foot core, there are two side water tanks, and the two side water tanks are symmetrically arranged in parallel on the left and right sides of the central water tank;

[0015] The two ends of the central water tank extend outside the coverage of the static ankle connection plate, and the side water tanks on the left and right sides are also arranged outside the coverage of the static ankle connection plate; the bottoms of the central water tank and the two side water tanks are connected to the same water guide hole, and the lower end opening of the water guide hole is opened on the bottom side wall of the bottom lock hole;

[0016] The outer layer of the artificial foot is a silicone leather cover, the outer layer of the artificial foot is wrapped around the outside of the foot core, and a top cover is arranged on the top of the outer layer of the artificial foot, and the top cover can be detachably mounted on the top of the outer layer of the artificial foot;

[0017] The docking bolts on the top of the static ankle connection plate extend above the top cover, the top joint seams of the foot core and the outer layer of the artificial foot are directly below the top cover, and the top cover is above the foot core without contact.

[0018] Furthermore, a keel, an upper support and a bottom support are also provided inside the foot core, wherein the keel is a flat plate vertically provided along the front-back direction, and the keel is vertically provided on the vertical middle axis plane of the isolation foot core;

[0019] The upper support and the bottom support are both round tubes, the upper support is vertically connected to the top of the bottom support, the keel, the upper support and the bottom support are an integral structure of injection molding, the upper support is sleeved outside the main lock hole, and the bottom support is sleeved outside the bottom lock hole;

[0020] The bottom lock hole has a diameter larger than the main lock hole.

[0021] The outer diameter of the upper support column is smaller than the outer diameter of the bottom support column.

[0022] Furthermore, anti-skid particles are evenly arranged on the outer surface of the foot core;

[0023] The left and right side walls of the foot core are also recessed inward to form weight-reducing grooves, which are formed on the left and right sides of the keel. A tendon hole is also formed on the front and rear sides of the keel, respectively, and the tendon hole is connected to the weight-reducing grooves on the left and right sides of the keel.

[0024] A reinforcing rib is vertically arranged on the left and right sides of the upper support and the bottom support, and the reinforcing rib is a flat plate vertically arranged along the left and right directions; the weight-reducing grooves on both sides are divided into two independent grooves in front and back by the reinforcing ribs;

[0025] The two rib holes are respectively arranged at the front and rear sides of the reinforcing rib.

[0026] Furthermore, two auxiliary locking holes are vertically opened on the top of the foot core, nuts are embedded in the auxiliary locking holes, the vertical axes of the two auxiliary locking holes are in the same vertical plane as the vertical axis of the main locking hole, and the two auxiliary locking holes are symmetrically arranged on both sides of the main locking hole; the auxiliary locking holes do not contact the central water tank;

[0027] An anti-slip bolt is locked in each of the secondary lock holes. The anti-slip bolt is a stainless steel bolt. The anti-slip bolt passes through the static ankle connection plate from top to bottom and is locked in the secondary lock hole.

[0028] The static ankle connection plate and the butt bolts are an integral structure made of stainless steel.

[0029] Furthermore, the top cover is a plastic cover plate;

[0030] The top cover is located above the foot core without contact, and the height difference between the top cover and the top of the foot core is 1-3mm;

[0031] The central water trough and the side water troughs are both within the covering range of the top cover, and the central water trough and the side water troughs are not in contact with the top cover.

[0032] Furthermore, the outer layer of the artificial foot has an opening at the bottom, and the lower end opening of the bottom locking hole is communicated with the bottom opening of the outer layer of the artificial foot.

[0033] The beneficial effects of the present invention are as follows: 1. The foot core of the device is a hollow structure made of lightweight plastic, with a weight-reducing groove, a keel, an upper support and a bottom support, which can reduce the weight without reducing the overall strength of the structure. The device is lighter and can effectively reduce the activity intensity of the active residual limb, making it easier for the wearer to use;

[0034] 2. The device also adds anti-skid bolts on the static ankle connection plate to form an eccentric force with the docking bolts, effectively preventing the docking bolts from slipping and rotating, thus avoiding the situation where the docking bolts rotate and become loose due to walking and tilting when the prosthetic foot is used for a long time;

[0035] 3. The device is also equipped with a central water tank, side water tanks and water guide holes, which can effectively guide the water stored in the cavity between the static ankle connection plate and the foot core, and the static ankle connection plate does not completely cover the central water tank and the side water tank. At the same time, there is a gap between the top cover and the foot core, which can guide the water vapor at the bottom of the static ankle connection plate to disperse, so that the accumulated water in the device can flow downward through the guide holes and along the bottom opening of the outer layer of the artificial foot, while the top can disperse the water vapor through the gap, effectively avoiding the occurrence of water accumulation inside the static ankle connection plate and improving the overall life of the artificial foot. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0037] Figure 1 This is a schematic diagram of the overall structure of the artificial foot of the present invention;

[0038] Figure 2 It is a schematic structural diagram of the assembled state of the static ankle connection plate, the foot core and the outer layer of the artificial foot of the present invention;

[0039] Figure 3 This is a schematic diagram of the overall structure of the foot core of the present invention;

[0040] Figure 4 This is a schematic diagram of the bottom structure of the foot core of the present invention;

[0041] Figure 5This is a schematic diagram of the top view of the foot core structure of the present invention;

[0042] Figure 6 It is a top view schematic diagram of the overall structure of the keel of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of the static ankle connection plate of the present invention;

[0044] Figure 8 This is a schematic diagram of the positional relationship between the side surface of the foot core and the top cover of the present invention;

[0045] Fig. 9 It is a schematic diagram of the connection of the water guide holes inside the foot core of the present invention.

[0046] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0047] 1-outer layer of artificial foot, 11-top cover, 12-main locking hole, 13-bottom locking hole, 14-auxiliary locking hole, 2-foot core, 21-weight reduction groove, 22-rib hole, 23-reinforcement rib, 3-static ankle connecting plate, 31-butt bolt, 32-anti-slip bolt, 33-quadrangular pyramid, 4-center water tank, 41-side water tank, 42-water guide hole, 5-keel, 51-upper pillar, 52-bottom pillar. DETAILED DESCRIPTION

[0048] See also Figures 1 to 9 As shown, the present invention provides a waterproof and lightweight artificial foot. In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods of the specification.

[0049] In a specific embodiment of the technical solution of the present invention:

[0050] It includes an outer layer 1 of a prosthetic foot, a foot core 2, a static ankle connection plate 3, a central water tank 4 and a keel 5;

[0051] The foot core 2 is an integral structure, which is an integral structure formed by high-strength plastic injection molding, making it lighter and having higher structural strength. The bottom of the foot core 2 is an inclined surface with a lower front and a higher back, which can be a curved surface, which is more rounded, easy to manufacture and install, and has no stress dead angle.

[0052] A main locking hole 12 is also vertically opened at the center of the joint surface at the top of the foot core 2. The main locking hole 12 vertically penetrates the bottom supporting surface of the foot core 2 from top to bottom. The bottom supporting surface of the foot core 2 is vertically opened with a bottom locking hole 13. The bottom locking hole 13 is connected to the main locking hole 12, and the axes of the main locking hole 12 and the bottom locking hole 13 coincide with each other; there is an opening at the bottom of the outer layer 1 of the artificial foot, and the lower end opening of the bottom locking hole 13 is connected to the bottom opening of the outer layer 1 of the artificial foot, which is convenient for diverting the accumulated water in the foot core 2 to the outside of the sole of the artificial foot outer layer 1 to avoid water accumulation inside the foot core 2.

[0053] A keel 5, an upper support 51 and a bottom support 52 are also provided inside the foot core 2. The keel 5 is a flat plate vertically provided along the front-back direction. The keel 5 is vertically provided on the vertical middle axis plane of the isolation foot core 2.

[0054] The upper support 51 and the bottom support 52 are both round tubes. The upper support 51 is vertically connected to the top of the bottom support 52. The keel 5, the upper support 51 and the bottom support 52 are an integral structure of injection molding. The upper support 51 is sleeved outside the main locking hole 12, and the bottom support 52 is sleeved outside the bottom locking hole 13.

[0055] The diameter of the bottom lock hole 13 is larger than the diameter of the main lock hole 12.

[0056] The outer diameter of the upper support column 51 is smaller than the outer diameter of the bottom column 52 , and the upper support column 51 and the bottom column 52 form a stepped shaft structure that is smaller at the top and larger at the bottom.

[0057] The outer surface of the foot core 2 is evenly provided with anti-skid particles to form frosted anti-skid lines, so that the entire foot core 2 has anti-skid properties through the frosted lines, thereby making the connection between the foot core 2 and the outer layer 1 of the artificial foot more stable and not easy to slip;

[0058] The left and right side walls of the foot core 2 are recessed inward to form weight-reducing grooves 21, which are formed on the left and right sides of the keel 5. The weight-reducing grooves 21 can effectively reduce the weight proportion of the foot core 2. The density of the foot core 2 is greater than the density of the outer layer 1 of the prosthetic foot. Such weight-reducing grooves 21 have a significant effect on reducing the overall weight of the prosthetic foot.

[0059] A rib hole 22 is also provided on the front and rear sides of the keel 5, and the rib hole 22 is connected to the weight-reducing grooves 21 on the left and right sides of the keel 5; the function of the rib hole 22 is that after the outer layer 1 of the artificial foot is injection-molded, the outer layer 1 of the artificial foot is filled in the rib hole 22 to form a mutual connection, so that the connection between the outer layer 1 of the artificial foot and the keel 5 is more firmly and stably, and the uneven force is effectively avoided. The foot core 2 is subjected to force through the static ankle connection plate 3. In addition to the pulling force on the top of the outer layer 1 of the artificial foot, the foot core 2 is also subjected to pulling force at the rib hole 22. Similarly, the weight-reducing groove 21 is concave inward, which will also form a pulling force between the outer layer 1 of the artificial foot, so that the outer layer 1 of the artificial foot and the foot core 2 are subjected to force in more dimensions and in more ways, and the connection is more firmly connected, which effectively avoids excessive pulling of the bonding gap, more structural force, reduces the pulling force on the bonding surface, and effectively reduces the probability of the bonding surface being pulled to cause gap separation.

[0060] A reinforcing rib 23 is vertically arranged on the left and right sides of the upper support 51 and the bottom support 52. The reinforcing rib 23 is a flat plate vertically arranged along the left and right directions. The weight-reducing grooves 21 on both sides are divided into two independent grooves at the front and rear by the reinforcing rib 23.

[0061] The two rib holes 22 are respectively arranged at the front and rear sides of the reinforcing rib 23 .

[0062] The static ankle connection plate 3 is a stainless steel buckle cover, and a four-sided square pyramid 33 is protruded upward from the top of the static ankle connection plate 3. The interior of the four-sided square pyramid 33 is a threaded hole, and the exterior of the four-sided square pyramid 33 is closed. The threaded hole opening of the four-sided square pyramid 33 is set at the bottom of the static ankle connection plate 3, and a docking bolt 31 is vertically set inside the main lock hole 12; the static ankle connection plate 3 is tightly covered on the top of the foot core 2, and the docking bolt 31 passes through the bottom lock hole 13 and the main lock hole 12 from bottom to top, and the upper end of the docking bolt 31 is locked in the threaded hole at the bottom of the static ankle connection plate 3; although the static ankle connection plate 3 is made of stainless steel, the split assembly structure of the device can be easily disassembled, and the threaded hole between the docking bolt 31 and the bottom of the four-sided square pyramid 33 needs to be filled with sealant to ensure that the bolt connection is stable and firm, and also has a better sealing effect. When the overall static ankle connection plate 3 is damaged or the screw is damaged and needs to be replaced, the static ankle connection plate 3 can be reinstalled after being positioned at the maintenance point, and it can be replaced by professionals.

[0063] Two secondary locking holes 14 are vertically provided at the top of the foot core 2, and nuts are embedded in the secondary locking holes 14. The vertical axes of the two secondary locking holes 14 are in the same vertical plane as the vertical axis of the main locking hole 12, and the two secondary locking holes 14 are symmetrically arranged on both sides of the main locking hole 12; the secondary locking holes 14 do not contact the central water tank 4, and the connecting line of the two secondary locking holes 14 forms an eccentric angle with the central water tank 4, and the central water tank 4 is on the central axis in the front-back direction;

[0064] Each secondary locking hole 14 is locked with an anti-skid bolt 32, which is a stainless steel bolt. The anti-skid bolt 32 passes through the static ankle connecting plate 3 from top to bottom and is locked in the secondary locking hole 14. The edge of the static ankle connecting plate 3 is locked to the top of the foot core 2 through the anti-skid bolt 32, and the center of the static ankle connecting plate 3 is locked to the foot core 2 through the docking bolt 31.

[0065] The static ankle connecting plate 3 and the docking bolt 31 are an integral structure made of stainless steel. The conventional static ankle connecting plate 3 only has a cover plate and a bolt, which can be locked with the foot core 2. It is easy to slip, and the top is prone to rust due to water accumulation for a long time. In addition, there is only one bolt for locking, and the bolt and the cover plate are easy to rotate with the foot core 2, resulting in slippage. In addition to the docking bolt 31, the present device also adds an anti-slip bolt 32, which can effectively prevent the entire static ankle connecting plate 3 and the docking bolt 31 from rotating with the foot core 2, and effectively prevent the foot core 2 and the static ankle connecting plate 31 from rotating and loosening.

[0066] A central water tank 4 and a side water tank 41 are provided at the top of the foot core 2. The front-to-back axis of the central water tank 4 coincides with the front-to-back axis of the foot core 2. There are two side water tanks 41, which are symmetrically arranged in parallel on the left and right sides of the central water tank 4.

[0067] Both ends of the central water tank 4 extend outside the coverage of the static ankle connection plate 3, and the side water tanks 41 on the left and right sides are also arranged outside the coverage of the static ankle connection plate 3; the bottoms of the central water tank 4 and the two side water tanks 41 are connected to the same water guide hole 42, and the lower end opening of the water guide hole 42 is opened on the bottom side wall of the bottom lock hole 13;

[0068] The outer layer 1 of the artificial foot is a silicone leather cover, which is wrapped around the outside of the foot core 2. A top cover 11 is arranged on the top of the outer layer 1 of the artificial foot, and the top cover 11 can be detachably mounted on the top of the outer layer 1 of the artificial foot; the top cover 11 is a plastic cover plate;

[0069] The top cover 11 is located above the foot core 2 without contact, and the height difference between the top cover 11 and the top of the foot core 2 is 1-3 mm;

[0070] The central water tank 4 and the side water tank 41 are both within the coverage of the top cover 11, and the central water tank 4 and the side water tank 41 are not in contact with the top cover 11. The water vapor generated in the central water tank 4 and the side water tank 41 can be dispersed through the gap between the top cover 11 and the top of the foot core 2 to prevent the water vapor from accumulating and forming water droplets.

[0071] The docking bolt 31 on the top of the static ankle connecting plate 3 extends out above the top cover 11, and the top cover 11 covers the top of the foot core 2 and the outer layer 1 of the artificial foot. The top cover 11 is above the foot core 2 without contact. The top cover is mounted on the static ankle connecting plate 3 and can be easily removed for cleaning.

[0072] It should be noted that:

[0073] 1. The artificial foot is sometimes dirty, and it is inevitable to clean the artificial foot. Once the artificial foot is cleaned, it is inevitable to pour water on the top of the foot core 2. The top of the wooden foot core 2 will also be coated with sealing varnish, but it is still inevitable that the wood will absorb water. Long-term absorption of water will easily cause swelling and swelling, because the wood will volatilize the internal moisture according to the environment, and it is easy to crack after drying, resulting in a shortened life of the artificial foot. The device does not have physical property changes caused by humidity changes and water pouring. The device can conveniently clean the artificial foot, and can flush water to clean the outside of the outer layer 1 of the artificial foot, and can also clean the top of the foot core 2. It is easy to use. The device can conveniently volatilize the internal moisture through the central water tank 4 and the side water tank 41, and can also be convenient for drainage;

[0074] 2. Existing artificial feet all need to use docking bolts 31. The conventional structure is that a bolt locks the artificial foot and the foot core as a whole. The foot core has bolt holes and is closed inside. With such a structure, the foot core 2 can only avoid water ingress as much as possible. Once water enters, it cannot be discharged at all. Even the water that has penetrated into the foot core 2 becomes extremely difficult to evaporate because it has penetrated into the completely closed foot core 2. This causes the water inside the foot core to continue to accumulate, resulting in a dark and humid internal environment, which will cause a lot of troubles to the user. Mildew, scaling, and moss will occur, and the wood will shrink and crack. These situations will not occur in this device because it has excellent drainage. The top cover 11 can also be disassembled for cleaning, so that the device can use a hair dryer to dry the water in the central water tank 4 and the side water tank 41, effectively avoiding continuous water accumulation inside the foot core, and thus avoiding these problems caused by moisture and water accumulation.

[0075] 3. The foot core 2 of the existing artificial foot is solid, and the internal structure is solid, resulting in no structural design and heavy weight. The existing solid integral foot core 2 is provided with a weight-reducing groove 31 in the device to form a hollow bracket support structure. Under the condition of using the foot core of the same material, the device is lighter;

[0076] 4. The current foot core 2 has no guide for stress bearing and can only bear the load rigidly, which results in a greater reaction force fed back to the user. The device is low in front and high in the back. Figure 8 As shown, the stress is guided to the toes, making the overall force transmission more forward. The heel has more silicone cushioning, which reduces the vertical recoil force and alleviates the reaction force of the human body's residual limbs. At the same time, the hollow structure makes the weight lighter. These two aspects reduce the user's sports fatigue and make wearing more labor-saving.

[0077] When making the present invention, a foot core 2 is first made with a mold, and then a matching ankle connection plate 3 is made, and then the foot core 2 is placed therein through a mold of the outer layer 1 of the artificial foot, and finally the outer layer 1 of the artificial foot and the foot core 2 are injection molded and bonded into an integral structure. The outer layer 1 of the artificial foot is an elastic silicone structure with bubbles injected inside. It has low density and elasticity, can buffer the load on the human body, and is light in weight. The foot core 2 is a high-strength plastic, which is heavy, has a strong load-bearing capacity, does not absorb water, and is corrosion-resistant.

[0078] After the foot core 2 and the outer layer 1 of the artificial foot form an integral structure, the structural strength is high, and the bottom of the foot core 2 is low in the front and high in the back, which can form a force-bearing structure with the sole of the foot as the main support, with smaller reaction force and more labor-saving walking.

[0079] The front side referred to in this device is the toe side, the back side is the heel side, the left and right refer to the inner and outer sides of the foot, the top refers to the back of the foot, and the bottom refers to the plantar surface; the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0080] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A waterproof and lightweight artificial foot, characterized in that: include: The artificial foot comprises an outer layer (1), a foot core (2), a static ankle connection plate (3), a central water tank (4) and a keel (5); The foot core (2) is an integral structure; A main locking hole (12) is vertically provided at the center of the joint surface at the top of the foot core (2), and a bottom locking hole (13) is vertically provided on the bottom supporting surface of the foot core (2). The bottom locking hole (13) is connected to the main locking hole (12), and the axes of the main locking hole (12) and the bottom locking hole (13) coincide with each other; The static ankle connection plate (3) is a buckle cover, and a quadrangular pyramid (33) is protruding upward from the top of the static ankle connection plate (3). The interior of the quadrangular pyramid (33) is a threaded hole, and the exterior of the quadrangular pyramid (33) is closed. The threaded hole opening of the quadrangular pyramid (33) is arranged at the bottom of the static ankle connection plate (3), and a docking bolt (31) is vertically arranged inside the main locking hole (12); the static ankle connection plate (3) is tightly covered on the top of the foot core (2), and the docking bolt (31) passes through the bottom locking hole (13) and the main locking hole (12) from bottom to top in sequence, and the upper end of the docking bolt (31) is locked in the threaded hole at the bottom of the static ankle connection plate (3); The top of the foot core (2) is provided with a central water groove (4) and a side water groove (41), the front-back axis of the central water groove (4) coincides with the front-back axis of the foot core (2), there are two side water grooves (41), and the two side water grooves (41) are symmetrically arranged in parallel on the left and right sides of the central water groove (4); The two ends of the central water trough (4) extend outside the coverage of the static ankle connection plate (3), and the side water troughs (41) on the left and right sides are also arranged outside the coverage of the static ankle connection plate (3); the bottoms of the central water trough (4) and the two side water troughs (41) are connected to the same water guide hole (42), and the lower end opening of the water guide hole (42) is opened on the bottom side wall of the bottom lock hole (13); The outer layer (1) of the artificial foot is wrapped around the outside of the foot core (2), a top cover (11) is arranged on the top of the outer layer (1) of the artificial foot, and the top cover (11) is detachably mounted on the top of the outer layer (1) of the artificial foot; The docking bolts (31) on the top of the static ankle connection plate (3) extend above the top cover (11), the top joint seams of the foot core (2) and the outer layer (1) of the artificial foot are directly below the top cover (11), and the top cover (11) is above the foot core (2) without contact.

2. A waterproof and lightweight artificial foot according to claim 1, characterized in that: A keel (5), an upper support (51) and a bottom support (52) are also arranged inside the foot core (2); the keel (5) is a flat plate arranged vertically in the front-back direction; the keel (5) is arranged vertically on the vertical middle axis plane of the isolation foot core (2); The upper support (51) and the bottom support (52) are both round tubes. The upper support (51) is vertically connected to the top of the bottom support (52). The keel (5), the upper support (51) and the bottom support (52) are an integral structure formed by injection molding. The upper support (51) is sleeved outside the main locking hole (12), and the bottom support (52) is sleeved outside the bottom locking hole (13). The bottom lock hole (13) has a diameter greater than that of the main lock hole (12). The outer diameter of the upper support column (51) is smaller than the outer diameter of the bottom support column (52).

3. The waterproof and lightweight artificial foot according to claim 2, characterized in that: The outer surface of the foot core (2) is evenly provided with anti-skid particles; The left and right side walls of the foot core (2) are also recessed inward to form a weight-reducing groove (21), the weight-reducing groove (21) is formed on the left and right sides of the keel (5), and a rib hole (22) is formed on the front and rear sides of the keel (5), respectively, and the rib hole (22) is connected to the weight-reducing groove (21) on the left and right sides of the keel (5); A reinforcing rib (23) is vertically arranged on the left and right sides of each of the upper pillar (51) and the bottom pillar (52), and the reinforcing rib (23) is a flat plate vertically arranged along the left and right directions; the weight-reducing grooves (21) on both sides are divided into two independent grooves at the front and rear by the reinforcing rib (23); The two rib holes (22) are respectively arranged on the front and rear sides of the reinforcing rib (23).

4. The waterproof and lightweight artificial foot according to claim 1, characterized in that: Two auxiliary locking holes (14) are vertically formed on the top of the foot core (2), nuts are embedded in the auxiliary locking holes (14), the vertical axes of the two auxiliary locking holes (14) and the vertical axis of the main locking hole (12) are in the same vertical plane, and the two auxiliary locking holes (14) are symmetrically arranged on both sides of the main locking hole (12); the auxiliary locking holes (14) do not contact the central water tank (4); An anti-slip bolt (32) is locked in each of the secondary locking holes (14), and the anti-slip bolt (32) is a stainless steel bolt. The anti-slip bolt (32) passes through the static ankle connection plate (3) from top to bottom and is locked in the secondary locking hole (14); The stationary ankle connection plate (3) and the butt bolts (31) are an integral structure made of stainless steel.

5. The waterproof and lightweight artificial foot according to claim 1, characterized in that: The top cover (11) is a plastic cover plate; The top cover (11) is located above the foot core (2) without contact, and the height difference between the top cover (11) and the top of the foot core (2) is 1-3 mm; The central water trough (4) and the side water trough (41) are both within the covering range of the top cover (11), and the central water trough (4) and the side water trough (41) are not in contact with the top cover (11).

6. The waterproof and lightweight artificial foot according to claim 1, characterized in that: The outer layer (1) of the artificial foot has an opening at the bottom, and the lower end opening of the bottom locking hole (13) is connected to the bottom opening of the outer layer (1) of the artificial foot.

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