High-arch carbon fiber foot plate

Abstract

The utility model relates to a high-arch carbon fiber foot plate which comprises an upper foot plate, a lower foot plate and a middle main foot plate which are made of carbon fiber materials. One end of the upper foot plate is connected with the middle main foot plate through a fastener; the middle main foot plate is connected with the lower foot plate through a connecting piece; wherein the upper foot plate is positioned above the middle main foot plate; the middle main foot plate is positioned above the lower foot plate; the utility model has the advantages that the lower foot plate adopts a high arch design, so that better energy storage performance can be realized, a user can walk more easily, and higher exercise intensity can be realized; meanwhile, the high arch is combined with the long toe separating structure, so that better road surface adaptability is achieved, and the residual limb of a user can be better protected; due to the impact protection structure of plantar flexion and dorsal flexion, the product has longer service life.

Description

Technical Field

[0001] This utility model belongs to the field of medical assistive devices, specifically the field of prosthetic technology, and particularly high-arch carbon fiber footplates. Background Technology

[0002] Carbon fiber, with its high strength, high elasticity, and light weight, is widely used in the field of prostheses. In particular, the biomimetic arch structure provides better cushioning during walking (especially running), reducing the impact on other parts of the body, while also providing better energy storage.

[0003] In the field of prosthetics, footplate energy storage usually refers to the way carbon fiber footplates store the energy of impact through footplate deformation when the foot lands, and release the energy when the foot leaves the ground. The more energy stored, the easier walking becomes.

[0004] Currently, based on the characteristics of foot arch movement, high arches have better energy storage effects, but also increase their deformation range. Larger deformations can lead to a reduction in the product's fatigue life (foot deformation is mainly caused by the combined deformation of the upper and lower foot plates, and carbon fiber foot plates will have a reduced lifespan under long-term large deformations). This limits the design of high arches in products. However, without sufficient design support technology to produce high arch products, their structural deformation will greatly affect the product's lifespan. Therefore, the arch design will be lower, thus ensuring the fatigue deformation lifespan of the foot plate.

[0005] However, the low arch design of existing products cannot meet the energy storage needs of users during exercise, especially during running and jumping. They can only meet the needs of daily walking or low-intensity exercise. Even products that meet the needs of high-intensity exercise only achieve this by increasing the thickness of the footplate, which reduces deformation and sacrifices user comfort. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned problems in the prior art and to provide a high-arch carbon fiber footplate.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A high-arch carbon fiber footplate includes an upper footplate and a lower footplate made of carbon fiber, and a middle main footplate made of carbon fiber; one end of the upper footplate is connected to the middle main footplate by a fastener; the middle main footplate and the lower footplate are connected by a connector; wherein the upper footplate is located above the middle main footplate; the middle main footplate is located above the lower footplate.

[0009] Preferably, the fastener includes a connector, a washer, an auxiliary bolt, and a main bolt; the connector is located at the tail end of the upper foot plate and has threads therein; the washer, the auxiliary bolt, and the main bolt are respectively located on the back of the middle main foot plate;

[0010] The gasket is provided with a first auxiliary bolt hole and a first main bolt hole, respectively. The auxiliary bolt and the main bolt pass through the first auxiliary bolt hole and the first main bolt hole on the gasket and are connected to the thread in the connector. The tail ends of the middle main plate and the upper plate are provided with a second auxiliary bolt hole and a second main bolt hole, respectively, which are adapted to the auxiliary bolt and the main bolt.

[0011] Preferably, the connector includes a connecting bolt and a connecting nut; the connecting bolt passes through the middle main foot plate and the lower foot plate from top to bottom, and is threadedly connected to the connecting nut on the bottom surface of the lower foot plate; wherein, both the middle main foot plate and the lower foot plate are provided with bolt holes, and the bolt holes are adapted to the connecting bolt.

[0012] Preferably, the footplate includes a forefoot portion at the front, a heel portion at the rear, and an arch portion that is raised upward between the forefoot portion and the heel portion, wherein the forefoot portion and the heel portion can contact the ground; wherein the connector and the bolt hole are both located on the forefoot portion of the footplate; correspondingly, a decorative sleeve is also provided at the connection between the connector and the bolt hole.

[0013] Preferably, the bottom of the foot plate is further provided with a liner, wherein the shape of the liner is adapted to the shape of the foot plate, the liner is made of soft material, and is fixed to the bottom of the foot plate by bonding or molding, and the connecting nut is embedded in the liner after connection, ensuring the continuous effect of the arc surface of the foot.

[0014] Preferably, the main foot plate is an arc-shaped plate structure.

[0015] Preferably, a cushioning pad is provided between the middle main foot plate and the lower foot plate; wherein the cushioning pad is located at the arch of the lower foot plate and is used to reduce the impact vibration when the middle main foot plate and the lower foot plate are pressed together.

[0016] Preferably, a gap is left between the middle main foot plate and the upper foot plate, wherein the gap is located near the forefoot of the lower foot plate.

[0017] Preferably, the upper foot plate, the middle main foot plate, and the lower foot plate are all provided with a long toe structure at their head ends.

[0018] Preferably, the tail end of the lower foot plate and the tail end of the middle main foot plate form a large "V" shaped opening structure.

[0019] Due to the adoption of the above technical solution, the beneficial effects obtained by this utility model include:

[0020] 1. The footplate of this utility model adopts a high arch design and the tail end of the footplate and the tail end of the middle main footplate form a large "V" shaped opening structure, which realizes better energy storage and makes it easier and more comfortable for users to walk or run and jump.

[0021] 2. The front ends of the upper footplate, middle main footplate, and lower footplate of this utility model are all designed with long toes, which achieves better road adaptability and can better protect the user's residual limbs;

[0022] 3. The present invention has a buffer pad between the lower foot plate and the middle main foot plate, which realizes protection against plantar flexion impact;

[0023] 4. This utility model uses the middle main foot plate as the main deformation and energy storage foot plate, which plays a connecting role between the upper and lower parts. It is located at the front to connect and support the lower foot plate, thus allowing more deformation space for the lower foot plate. Moreover, the middle main foot plate is located below the upper foot plate. When the exercise intensity is high, the middle main foot plate deforms more and touches the upper foot plate, thus the upper foot plate provides impact protection for the middle main foot plate.

[0024] 5. In this utility model, there is a certain gap between the front end of the main foot plate and the front end of the upper foot plate. When the main foot plate reaches a certain deformation, the front end of the upper foot plate contacts the main foot plate, realizing back bending impact protection. When the deformation further increases, it realizes the auxiliary energy storage effect, making the product have a better service life. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of an embodiment of the high-arch carbon fiber footplate of this utility model.

[0026] Figure 2 This is a side view of an embodiment of the high-arch carbon fiber footplate of this utility model.

[0027] Figure 3 This is an exploded view of the structure of an embodiment of the high-arch carbon fiber footplate of this utility model.

[0028] Figure 4 This is a partial cross-sectional schematic diagram of the connector, lower foot plate, and middle main foot plate of this utility model.

[0029] Figure 5 This is a schematic diagram of the structure of the gasket of this utility model.

[0030] Figure 6This is the front view of the gasket of this utility model.

[0031] The attached figures are labeled as follows:

[0032] 1. Upper foot plate; 11. First auxiliary bolt hole; 12. First main bolt hole;

[0033] 13. Second auxiliary bolt hole; 14. Second main bolt hole; 15. Clearance;

[0034] 2. Main foot plate; 21. Bolt holes; 22. Decorative sleeve; 23. Buffer pad;

[0035] 3. Instep; 31. Forefoot; 32. Arch; 33. Heel;

[0036] 4. Fasteners; 41. Connectors; 42. Washers; 43. Auxiliary bolts; 44. Main bolts;

[0037] 5. Connecting parts; 51. Connecting bolts; 52. Connecting nuts;

[0038] 6. Lining; 7. Long toe structure. Detailed Implementation

[0039] Please see Figure 1-6 As shown, this utility model provides a high-arch carbon fiber footplate, including an upper footplate 1, a lower footplate 3, and a middle main footplate 2 made of carbon fiber. One end of the upper footplate 1 is connected to the middle main footplate 2 by a fastener 4. The middle main footplate 2 and the lower footplate 3 are connected by a connector 5. The upper footplate 1 is located above the middle main footplate 2, and the middle main footplate 2 is located above the lower footplate 3. In this embodiment, the upper footplate 1 is used to cooperate with the lower footplate 3 to generate variable stiffness characteristics during walking, meeting the different stiffness requirements of the user's gait cycle. The middle main footplate 2 plays a connecting role and is located below the upper footplate 1. When the exercise intensity is low, the middle main footplate functions alone. When the exercise intensity is high, the middle main footplate deforms more and touches the upper footplate, thus the upper footplate provides impact protection for the middle main footplate. The lower footplate 3 is used to provide support and shock absorption, and to realize the energy storage of plantar flexion.

[0040] like Figure 3 As shown, in this embodiment, the fastener 4 includes a connector 41, a washer 42, an auxiliary bolt 43, and a main bolt 44. The connector 41 is a prosthetic connector, and its lower end is provided with threads for connecting with the auxiliary bolt and the main bolt. The auxiliary bolt 43 and the main bolt 44 are fixed through these threads. The connector 41 is located at the tail end of the upper foot plate 1, and the washer 42, the auxiliary bolt 43, and the main bolt 44 are located on the back of the middle main foot plate 2. The upper foot plate 1 and the middle main foot plate 2 can be fixed by their cooperation.

[0041] The details are as follows: Please refer to the following again. Figure 3 Both the middle main foot plate 2 and the upper foot plate 1 have second auxiliary bolt holes 13 and second main bolt holes 14 at their tail ends, which are respectively adapted to the auxiliary bolts and main bolts. Correspondingly, the shims also have first auxiliary bolt holes 11 and first main bolt holes 12. The auxiliary bolts 43 and main bolts 44 first pass through the first auxiliary bolt holes 11 and first main bolt holes 12 on the shims, and then pass through the second auxiliary bolt holes 13 and second main bolt holes 14 on the middle main foot plate and the upper foot plate, so that they come into contact with the threads in the connector. Then, the corresponding holes on the shims are screwed on. The auxiliary bolt 43 and the main bolt 44 are threaded together, ultimately forming a tight fit between the connector 41, the upper foot plate 1, the middle main foot plate 2, the washer 42, the auxiliary bolt 43, and the main bolt 44, thus completing the fixation between the fastener 4 and the upper foot plate 1 and the middle main foot plate 2. It should be noted that the upper foot plate 1 and the middle main foot plate 2 are connected to the connector using a double-bolt structure (main bolt and auxiliary bolt), which avoids rotation of the upper foot plate and connector when using a single bolt connection, improving stability during use. Simultaneously, the washer 42 provides a pressure-applying effect; a non-standard, custom-made large-area washer (such as...) can be used. Figure 5 As shown in the figure, this increases the contact area with the middle main plate during connection, thereby reducing the pressure damage to the middle main plate.

[0042] In this embodiment, the middle main foot plate 2 is an arc-shaped plate structure with a certain curvature; the curvature is small, so the middle main foot plate 2 bends slightly upward; there is a certain gap 15 between the middle main foot plate 2 and the upper foot plate 1, and the gap 15 is located near the forefoot of the lower foot plate; when the middle main foot plate 2 reaches a certain deformation, the front end of the upper foot plate 1 contacts the middle main foot plate 2, realizing the impact protection of the upper foot plate 1 against the middle main foot plate 2, and at the same time, when the deformation increases further, the auxiliary energy storage effect can be realized.

[0043] In this embodiment, the connector 5 includes a connecting bolt 51 and a connecting nut 52; both the main foot plate 2 and the lower foot plate 3 are provided with bolt holes 21, wherein the bolt holes on the main foot plate 2 and the bolt holes on the lower foot plate 3 are aligned in position, thus facilitating the sequential passage of the connecting bolt 51, and the bolt holes 21 are adapted to the connecting bolts 51; the connecting bolts 51 pass through the main foot plate 2 and the lower foot plate 3 from top to bottom, and are threadedly connected to the connecting nut on the bottom surface of the lower foot plate 3, thereby completing the fixing of the connector to the main foot plate and the lower foot plate; It should be noted that the main foot plate 2 and the lower foot plate 3 are fixed together by the connector 5, and the connection point can be located at the front end of the overall foot plate. This setting has a small impact on the product deformation. At the same time, a bottom liner 6 is provided at the bottom of the lower foot plate. The shape of the bottom liner 6 is adapted to the shape of the lower foot plate. In this embodiment, the bottom liner is made of soft material and is fixed to the bottom of the lower foot plate by bonding or molding. The bottom liner also has a reserved assembly position or deformation space for the connecting nut 52. This allows the connecting nut to be embedded in the bottom liner after connection, ensuring the continuous arc surface effect of the foot.

[0044] The connecting nut 52 used in this embodiment is a non-standard custom nut, which is embedded in the corresponding position of the base liner 6 without affecting the local thickness of the product; at the same time, the base liner 6 can play a role in buffering and increasing friction, reducing the movement between the foot plate and the rubber sleeve.

[0045] In this embodiment, the lower foot plate 3 includes a forefoot portion 31 located at the front, a heel portion 33 located at the rear, and an arch portion 32 located between the forefoot portion and the heel portion and raised upwards. The forefoot portion 31 and the heel portion 33 can contact the ground. The connector 5 and the bolt hole 21 are both located on the forefoot portion 31 of the lower foot plate 1. Correspondingly, a decorative sleeve 22 is also provided at the connection between the connector 5 and the bolt hole 21. The decorative sleeve 22 is fitted onto the front end of the middle main foot plate 2 and covers the connection. The setting of the decorative sleeve 22 can make the product more beautiful.

[0046] In this embodiment, a cushioning pad 23 is also provided between the middle main foot plate 2 and the lower foot plate 3. The cushioning pad 23 is located at the arch part 32 of the lower foot plate and is used to reduce the impact vibration when the middle main foot plate and the lower foot plate are pressed together. In addition, the lower foot plate 3 adopts a high arch design, and the tail end of the lower foot plate 3 and the tail end of the middle main foot plate 2 form a large "V" shaped opening structure. This setting increases the deformation of the lower foot plate (i.e., the deformation of the back flexion), providing better cushioning effect and energy storage. At the same time, since the connection point between the lower foot plate 3 and the middle main foot plate 2 is much forward, the lower foot plate has a longer lever arm to participate in the deformation process, thereby avoiding large deformation damage to the local foot plate.

[0047] In this embodiment, the upper footplate 1, the middle main footplate 2, and the lower footplate 3 are all provided with a long toe-splitting structure 7 at their ends. This long toe-splitting structure 7 splits the toes simultaneously on the ball of the foot of the upper footplate 1, the middle main footplate 2, and the lower footplate 3. The long toe-splitting structure 7 can be a through groove or a cuboid groove, thereby dividing the ball of the foot into sections / toes. The splitting of the toes at the ball of the foot can enhance the adaptability of the foot to the ground. It should be noted that the long toe-splitting structure 7 is a special foot structure design, commonly found in some high-performance prosthetic foot products. It can produce different degrees of bending according to changes in road conditions, providing a certain degree of lateral flexibility, improving the user's comfort, achieving better road adaptability, and better protecting the user's residual limb.

[0048] In this embodiment, the shape and size of the upper foot plate 1, the middle main foot plate 2, and the lower foot plate 3 gradually decrease. This design mainly takes into account the shape of a human foot, with the upper part gradually decreasing in size, which is close to the shape of a healthy foot and makes it easier for the user to wear shoes and socks.

[0049] It should be noted that this utility model uses the middle main footplate as the primary deformation and energy storage footplate, playing a connecting role between the upper and lower parts. Its forward connection supports the lower footplate, allowing for more deformation space. The middle main footplate is located below the upper footplate; during low-intensity exercise, it functions independently. During higher-intensity exercise, the greater deformation of the middle main footplate will impact the upper footplate, which then provides impact protection and auxiliary energy storage. Simultaneously, the high arch design of the lower footplate and the large "V"-shaped opening at the rear ends of both the lower and middle main footplates enhance energy storage, making walking easier and enabling higher-intensity exercise. A cushioning pad is attached between the lower and middle main footplates to protect against plantar flexion impact. A gap between the front ends of the main footplate and the upper footplate provides protection against backbend impact, extending the product's lifespan.

[0050] The foregoing descriptions and embodiments are provided to enable those skilled in the art to understand and apply this invention. Those skilled in the art will readily make various modifications to these contents and apply the general principles described herein to other embodiments without inventive effort. Therefore, this invention is not limited to the foregoing descriptions and embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this invention without departing from its scope should be within the protection scope of this invention.

Claims

1. A high arch carbon fiber foot plate comprising an upper foot plate and a lower foot plate of carbon fiber material, characterized in that, The middle main foot plate is made of carbon fiber material; one end of the upper foot plate is connected with the middle main foot plate through a fastener; the middle main foot plate is connected with the lower foot plate through a connecting piece; The upper foot plate is located above the middle main foot plate; the middle main foot plate is located above the lower foot plate.

2. The high arch carbon fiber footplate of claim 1, wherein, The fastener comprises a connecting head, a gasket, an auxiliary bolt and a main bolt; the connecting head is located at the tail end of the upper foot plate and is internally provided with a thread; the gasket, the auxiliary bolt and the main bolt are respectively located at the back of the middle main foot plate; The gasket is respectively provided with a first auxiliary bolt hole and a first main bolt hole; the auxiliary bolt and the main bolt pass through the middle main foot plate and the upper foot plate through the first auxiliary bolt hole and the first main bolt hole on the gasket and are threadedly connected with the connecting head; The tail end of the middle main foot plate and the tail end of the upper foot plate are respectively provided with a second auxiliary bolt hole and a second main bolt hole; the second auxiliary bolt hole and the second main bolt hole are respectively matched with the auxiliary bolt and the main bolt.

3. The high arch carbon fiber footplate of claim 1, wherein, The connecting piece comprises a connecting bolt and a connecting nut; the connecting bolt passes through the middle main foot plate and the lower foot plate from top to bottom and is threadedly connected with the connecting nut on the bottom surface of the lower foot plate; the middle main foot plate and the lower foot plate are respectively provided with bolt holes matched with the connecting bolt.

4. The high arch carbon fiber footplate of claim 3, wherein, The lower foot plate comprises a front palm part located at the front, a heel part located at the rear and an arch part located between the front palm part and the heel part and upwardly protruding; the front palm part and the heel part can contact the ground; the connecting piece and the bolt hole are arranged on the front palm part; a decorative sleeve is arranged at the connecting position of the connecting piece and the bolt hole.

5. The high arch carbon fiber footplate of claim 4, wherein, The bottom of the lower foot plate is further provided with a bottom lining; the shape of the bottom lining is matched with the shape of the lower foot plate; the bottom lining is fixed on the bottom surface of the lower foot plate by adhesion or molding. The middle main foot plate is an arc-shaped plate structure.

6. The high arch carbon fiber footplate of claim 1, wherein, A buffer pad is arranged between the middle main foot plate and the lower foot plate; the buffer pad is located at the arch part of the lower foot plate and is used to reduce the impact vibration when the middle main foot plate and the lower foot plate are pressed together.

7. The high arch carbon fiber footplate of claim 1, wherein, A gap is left between the middle main foot plate and the upper foot plate; the gap is arranged near the front palm part of the lower foot plate.

8. The high arch carbon fiber footplate of claim 1, wherein, The head end of the upper foot plate, the middle main foot plate and the lower foot plate is provided with a long split-toe structure.

9. The high arch carbon fiber footplate of claim 1, wherein, The tail end of the lower foot plate and the tail end of the middle main foot plate form a large "V"-shaped opening structure.

10. The high arch carbon fiber footplate of claim 1, wherein, ​

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