CN117413993A - Steady and slow-shock bionic foot pad - Google Patents
Steady and slow-shock bionic foot pad Download PDFInfo
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- CN117413993A CN117413993A CN202311611293.2A CN202311611293A CN117413993A CN 117413993 A CN117413993 A CN 117413993A CN 202311611293 A CN202311611293 A CN 202311611293A CN 117413993 A CN117413993 A CN 117413993A
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- foot pad
- bionic foot
- penetrating
- bionic
- shell
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 78
- 230000000149 penetrating effect Effects 0.000 claims abstract description 43
- 239000000945 filler Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000000178 monomer Substances 0.000 claims abstract description 24
- 230000035939 shock Effects 0.000 claims abstract description 12
- 238000005192 partition Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims 4
- 239000011782 vitamin Substances 0.000 claims 4
- 229940088594 vitamin Drugs 0.000 claims 4
- 229930003231 vitamin Natural products 0.000 claims 4
- 235000013343 vitamin Nutrition 0.000 claims 4
- 150000003722 vitamin derivatives Chemical class 0.000 claims 4
- 102000008186 Collagen Human genes 0.000 abstract description 9
- 108010035532 Collagen Proteins 0.000 abstract description 9
- 229920001436 collagen Polymers 0.000 abstract description 9
- 239000000835 fiber Substances 0.000 abstract description 9
- 230000001788 irregular Effects 0.000 abstract description 9
- 230000008878 coupling Effects 0.000 abstract description 8
- 238000010168 coupling process Methods 0.000 abstract description 8
- 238000005859 coupling reaction Methods 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 7
- 210000002683 foot Anatomy 0.000 description 68
- 210000003371 toe Anatomy 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 238000010008 shearing Methods 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 210000000474 heel Anatomy 0.000 description 3
- 102100028717 Cytosolic 5'-nucleotidase 3A Human genes 0.000 description 2
- 241000219745 Lupinus Species 0.000 description 2
- 241000272534 Struthio camelus Species 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000001968 nicotinic acid Nutrition 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 210000000431 third toe Anatomy 0.000 description 2
- 208000025978 Athletic injury Diseases 0.000 description 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 210000001789 adipocyte Anatomy 0.000 description 1
- 210000000577 adipose tissue Anatomy 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 230000000386 athletic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000459 calcaneus Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 210000004744 fore-foot Anatomy 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000000878 metatarsophalangeal joint Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
A steady-maintenance cushioning bionic foot pad comprises a bionic foot pad shell and a cushioning filler; the cross section of the bionic foot pad shell is rectangular, a plurality of penetrating compartment partition walls along the same direction are arranged in the bionic foot pad shell, and the penetrating compartment partition walls are randomly distributed to form penetrating compartments in the bionic foot pad shell; the viscoelastic cushion is filled in each penetrating type compartment, and the viscoelastic cushion filled in each penetrating type compartment forms a cushion filler monomer, and the length of the cushion filler is consistent with the width of the bionic foot pad shell; the structure and the material characteristics of the fat chamber of the deratization toe pad with the characteristic of the double-stage composite material formed by the irregular collagen fibers and the flexible fat chamber are inspired, and the problem that the stability of the sports shoe against the ground and the shock absorption performance are poor and the stability of the leg and foot system of the existing robot against the ground are poor due to poor performance of the shock absorption midsole of the existing sports shoe is effectively solved through the unique material and the coupling bionical of the structure.
Description
Technical Field
The invention belongs to the field of mechanical bionic engineering, and particularly relates to a steady-maintenance cushioning bionic foot pad.
Background
At present, along with the promotion of people's motion health consciousness, sole cushioning property technique rapid development, when good cushioning property provides comfortable feel for the wearer, also plays the effect of motion protection. However, complex road and terrain environments present higher requirements and challenges to the ground-contacting cushioning performance and stability of athletic footwear. Meanwhile, in the field of robots, the legged robot technology is rapidly developed, and the legged robot technology is widely applied to the fields of military reconnaissance, rescue and relief work and the like. However, the complex road and terrain environment provides road adaptability and efficient cushioning performance to the robot legged system, as well as the touchdown stability of the robot legged system determined by the combined action of the two.
The literature investigation shows that: in the field of sports shoes, modern midsoles are generally manufactured from foamed foam materials, and through compression and elasticity of the materials, resistance is generated at a foot-ground interface, and mechanical energy generated by collision is consumed, so that the impact load is reduced. Development of the high-cushioning shoe material is one of important measures for improving the cushioning performance of the midsole, but the novel cushioning material suitable for the midsole is concerned on the basis of guaranteeing the function of the shoe material, and the safety, the environmental protection performance, the stability and the like, so that the novel cushioning material has long period and high cost. Generally, softer materials and thicker midsoles are selected to provide better cushioning, and the resulting outcome is increased ankle rollover, increased risk of athletic injury, and reduced stability of exercise. The flexibility of the material is simply relied on, and the damping performance and the stability are contradictory, so that the sole becomes an effective means from the angles of structure and material coupling on the limited midsole thickness space, especially on the thinner midsole space of the forefoot. In the field of robot legs and feet, the current leg-foot type robot mainly relieves the ground acting force strength by designing a complex buffer mechanism/structure or adding elastic materials/elements in a leg-foot system, but due to the isotropic material mechanical property limitation of the elastic materials/elements, the problems of ground contact vibration, poor stability and the like are often caused due to the fact that the elastic materials/elements have good flexible adaptability in all directions, and the foot gesture is mainly accurately adjusted in real time by means of a complex control system and sensing feedback to adapt to complex road surface and terrain changes, which directly leads to the problems of increased overall control difficulty, increased cost and the like of the robot, so that the problems are needed to be solved urgently.
The patent "a bionic cushioning midsole of sports shoes" (CN201710354587. X) is characterized in that a cushioning half sole area and a cushioning heel area are equally divided into an inner layer cushioning structure, a middle layer transition structure and an outer layer bearing structure according to the bionic design of a foot pad under the third toe of an ostrich foot and three toe cushions in the interior, so as to improve the ground contact cushioning performance of a sports shoe wearer, however, the patent cannot improve the stability of the wearer during the ground contact; the patent "a bionic cushioning shoe midsole" (CN 202010882851.9) improves the performance of cushioning the sports shoe wearer against the ground by simulating the movement posture of the metatarsophalangeal joint and the internal cushioning material and structure of the foot pad of the third toe sole when the ostrich foot touches the ground, the patent also cannot improve the stability of the sports shoe wearer when touching the ground, the structure is complicated and complicated to manufacture, and the structural parts are combined through glue, and the separation of the glue joints occurs when the structural parts are used for a long time, so that the main performance of the midsole is weakened, the service life is short and the ground touching safety of the user is influenced. Therefore, there is a need to solve the problem of improving the shock absorption and stability of the wearer of sports shoes. The patent 'a coupling bionic foot pad for improving the touchdown stability of a legged robot' (CN 202110115801.2) improves the touchdown stability of the legged robot by simulating the structure and the material of a compartment of a heel pad of a human body, and the stability of the legged robot in the horizontal direction is realized by the deformation of a lupin compartment; the dimensional stability in the vertical direction is achieved by deformation of the ellipsoidal compartment. The ellipsoidal compartments and the lupin compartments are bonded together through glue, and the problem of poor stability caused by degumming can exist; the dimensional stability of the foot pad in the horizontal direction is realized by the energy consumption of the deformation of the bionic foot pad shell structure and the mutual displacement of the monomer and the shell structure, and the action process is more gentle and stable; the dimensional stability in the vertical direction is realized through the deformation of the shell structure and the shearing deformation of the compartment and the shell structure, so that the range of the dimensional stability of the device is wider, the device is designed through an interference fit integrated structure, the structure is simpler and more reliable, and the problem of poor stability caused by degumming is avoided.
The natural biological leg foot type exercise provides a natural learning blue book for solving the problems. The mice live in desert (hard gobi, soft sandy land, desert), are good at jumping and fall to the ground, and the fat pad (heel pad) of the calcaneus of the feet is the primary part in contact with the sandy land. Biomechanical studies indicate that: the fat chamber in the apodization toe pad combines with abundant collagen fibers to play an excellent role in buffering. The fat chamber, which is composed of a plurality of fat cells, corresponds to individual liquid filled cushioning pads, which are separated by collagen fibers, just like isolated springs on a mattress, restricting the flow of large volumes of liquid during compression. The structure ensures that the special multilayer compartment structure and the material coordination coupling effect of the toe pad of the rat jump have excellent biomechanical properties.
Based on the structure and material characteristics of the fat chamber of the deratization toe pad with the characteristics of the two-stage composite material formed by the irregular collagen fibers and the flexible fat chamber, the invention provides the steady-maintenance cushioning bionic foot pad.
Disclosure of Invention
The invention aims to solve the problems of poor ground contact stability and shock absorption of the sports shoes and poor ground contact stability of the leg and foot system of the existing robot caused by poor performance of the shock absorption midsole of the existing sports shoes, and provides a steady-dimension shock absorption bionic foot pad.
The structure and the material characteristics of the fat chamber of the deratization toe pad with the characteristics of the two-stage composite material formed by the irregular collagen fibers and the flexible fat chamber are inspired, and the problems are effectively solved through the unique material and the coupling bionics of the structure.
A steady-maintenance cushioning bionic foot pad comprises a bionic foot pad shell and a cushioning filler;
the cross section of the bionic foot pad shell is rectangular, a plurality of penetrating compartment partition walls along the same direction are arranged in the bionic foot pad shell, and the penetrating compartment partition walls are randomly distributed to form penetrating compartments in the bionic foot pad shell;
the viscoelastic cushion is filled in each penetrating type compartment, the viscoelastic cushion filled in each penetrating type compartment forms a cushion filling monomer, and the length of the cushion filling is consistent with the width of the bionic foot pad shell.
The thickness of the bionic foot pad shell is 2 mm, and the thickness of the partition wall of the penetrating type compartment is 0.3 mm.
The number of the penetrating type compartments is 50, and the number ratio of the penetrating type compartments which are sequentially separated along the four sides of the rectangular cross section of the bionic foot pad shell is 5:8:5:7.
the bionic foot pad shell is made of thermoplastic polyurethane soft rubber with the hardness of 50.
The buffering filler is made of AB silica gel material with the hardness of 30 HA and the elastic modulus of 1.15 MPa.
The working process and the working principle of the invention are as follows:
the invention provides a steady-maintenance cushioning bionic foot pad for improving the ground contact stability and cushioning performance of a robot leg foot system or sports shoes, which is inspired by the structure and material characteristics of a two-stage composite material-based rat toe pad fat chamber formed by irregular collagen fibers and a flexible fat chamber and based on the unique material and structural coupling of the fat chamber. The integrated vitamin-stability cushioning bionic foot pad is of a strip-shaped cuboid structure after being combined. In the process of touching the ground with the bionic foot pad, the impact force of the ground acts on the shell structure of the bionic foot pad, and the shell structure of the bionic foot pad in the vertical direction is initially deformed greatly, so that the low-rigidity mechanical phenomenon is shown; along with the continuous compression, the buffer filler monomer of the bionic foot pad in the vertical direction and the penetrating type compartment start to generate shear deformation in the vertical direction, and the penetrating type compartment cannot continuously generate larger deformation in the vertical direction, and then the buffer filler monomer shows higher rigidity, so that the buffer filler monomer and the penetrating type compartment show higher rigidity in the vertical impact force F 1 The bionic foot pad is highly nonlinear in its entirety under the action. In the horizontal direction, the bionic foot pad is internally formed by a plurality of buffer filler monomers and penetrating type compartments, wherein the buffer filler monomers can move independently and are randomly staggered, and horizontal shearing deformation is easier to occur between the buffer filler monomers and the penetrating type compartments, and the buffer filler monomers and the penetrating type compartmentsThe compartment being under horizontal shear force F 2 The motion of the buffer filler monomer and the penetrating compartment is difficult to generate displacement deformation along with the increase of the horizontal shearing force under the action of the buffer filler monomer, and the bionic foot pad in the direction has the characteristic of integral nonlinear rigidity. Therefore, the high anisotropic mechanical behavior of the bionic foot pad enables the bionic foot pad to show better flexibility, and the ground contact stability is improved; meanwhile, the action time of impact force is prolonged due to the initial large deformation and vertical shearing force deformation of the bionic foot pad shell, and the buffering effect is effectively achieved.
The invention has the beneficial effects that:
1. the invention is inspired by the structure and the material characteristic of the fat chamber of the diving mouse toe pad with the characteristic of the double-stage composite material formed by the irregular collagen fiber and the flexible fat chamber, the bionic foot pad is enabled to be in irregular curve contact when receiving force in the vertical direction based on the unique material and the structure coupling, the contact between buffer filler monomers of the bionic foot pad is changed into irregular curve contact, when the buffer filler monomers relatively move, the generated equivalent friction force is larger, more impact energy (shear deformation) is consumed, the effect of dissipating the impact force layer by layer is achieved, the bionic foot pad is enabled to be in a larger deformation range in the vertical direction, the flexibility is better, the mechanical characteristic of variable stiffness is displayed, meanwhile, the penetrability compartment enables the bionic foot pad to be in nonlinear rigidity in the horizontal direction, the phenomenon of 'earthquake touching' can be effectively prevented, and the earthquake touching and the earthquake buffering performance and the stability of the robot leg foot system and the sports shoes are improved.
2. The bionic foot pad has excellent buffering and shock absorbing performance through the coupling effect of the thermoplastic polyurethane soft rubber-AB silica gel material.
3. The bionic foot pad can be directly coated with the flexible adhesive on the upper surface, is attached to the plantar surface of the jumping type leg-foot robot, and is convenient to operate and replace.
4. The invention has the advantages of simple, safe and reliable structure and simultaneously gives consideration to the ground contact stability and the shock absorption function of the sports shoes or the robot leg and foot system.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of an unfilled buffer filling in accordance with an embodiment of the present invention.
Fig. 3 is a top view of an embodiment of the present invention.
Fig. 4 is a cross-sectional view A-A of fig. 3 in accordance with an embodiment of the present invention.
Fig. 5 is a schematic diagram of a buffer filling structure according to an embodiment of the invention.
FIG. 6 is a schematic diagram showing the overall structural stress of an embodiment of the present invention.
Detailed Description
Please refer to fig. 1, 2, 3, 4, 5 and 6, which are examples of the present invention.
The structure and the material characteristics of the fat chamber of the deratization toe pad with the characteristic of the two-stage composite material formed by the irregular collagen fibers and the flexible fat chamber are inspired, and the problems are effectively solved through the unique coupling bionics of the materials and the structures.
A steady-maintenance cushioning bionic foot pad comprises a bionic foot pad shell 1 and a cushioning filler 2;
the cross section of the bionic foot pad shell 1 is rectangular, penetrating compartment partition walls 11 along the same direction are arranged in the bionic foot pad shell, the penetrating compartment partition walls 11 are distributed irregularly, and penetrating compartments 12 are formed in the bionic foot pad shell 1;
the penetrating compartments 12 are filled with viscoelastic buffer fillers 2, the viscoelastic buffer fillers 2 filled in each penetrating compartment 12 form a buffer filler monomer, and the length of the buffer fillers 2 is consistent with the width of the bionic foot pad shell 1.
The thickness of the bionic foot pad shell 1 is 2 mm, and the thickness of the penetrating compartment partition wall 11 is 0.3 mm.
The number of the penetrating compartments 12 is 50, and the number ratio of the penetrating compartments 12 which are sequentially separated along the four sides of the rectangular cross section of the bionic foot pad shell 1 is 5:8:5:7.
the bionic foot pad shell 1 is made of thermoplastic polyurethane soft rubber with the hardness of 50.
The buffer filler 2 is made of AB silica gel material with the hardness of 30 HA and the elastic modulus of 1.15 MPa.
The working process and working principle of the embodiment:
the invention provides a steady-maintenance cushioning bionic foot pad for improving the ground contact stability and cushioning performance of a robot leg foot system or sports shoes, which is inspired by the structure and material characteristics of a two-stage composite material-based rat toe pad fat chamber formed by irregular collagen fibers and a flexible fat chamber and based on the unique material and structural coupling of the fat chamber. The integrated vitamin-stability cushioning bionic foot pad is of a strip-shaped cuboid structure after being combined. In the process of touching the ground with the bionic foot pad, the impact force of the ground acts on the shell structure of the bionic foot pad, and the shell structure of the bionic foot pad in the vertical direction is initially deformed greatly, so that the low-rigidity mechanical phenomenon is shown; along with the continuous compression, the buffer filler monomer of the bionic foot pad in the vertical direction and the penetrating type compartment start to generate shear deformation in the vertical direction, and the penetrating type compartment cannot continuously generate larger deformation in the vertical direction, and then the buffer filler monomer shows higher rigidity, so that the buffer filler monomer and the penetrating type compartment show higher rigidity in the vertical impact force F 1 The bionic foot pad is highly nonlinear in its entirety under the action. In the horizontal direction, as the bionic foot pad is internally formed by a plurality of buffer filler monomers and penetrating type compartments, the buffer filler monomers are randomly staggered, the buffer filler monomers and the penetrating type compartments are easier to generate horizontal shearing deformation, and the buffer filler monomers and the penetrating type compartments are subjected to horizontal shearing force F 2 Is initially displaced relative to each other by a horizontal shear force F 2 The expansion buffer filler monomer and the penetrating compartment are difficult to generate displacement deformation, and the bionic foot pad in the direction has the characteristic of nonlinear rigidity. Therefore, the high anisotropic mechanical behavior of the bionic foot pad enables the bionic foot pad to show better flexibility, and the ground contact stability is improved; meanwhile, the action time of impact force is prolonged due to the initial large deformation and vertical shearing force deformation of the bionic foot pad shell, and the buffering effect is effectively achieved.
Claims (5)
1. A steady bradyseism bionic foot pad of dimension, its characterized in that: comprises a bionic foot pad shell (1) and a buffer filler (2);
the cross section of the bionic foot pad shell (1) is rectangular, a plurality of penetrating compartment partition walls (11) along the same direction are arranged in the bionic foot pad shell, the penetrating compartment partition walls (11) are irregularly arranged, and penetrating compartments (12) are formed in the bionic foot pad shell (1);
the penetrating type compartments (12) are filled with viscoelastic buffer fillers (2), the viscoelastic buffer fillers (2) filled in each penetrating type compartment (12) form a buffer filler monomer, and the length of each buffer filler (2) is consistent with the width of the bionic foot pad shell (1).
2. The vitamin and shock absorber bionic foot pad according to claim 1, wherein: the thickness of the bionic foot pad shell (1) is 2 mm, and the thickness of the penetrating type compartment partition wall (11) is 0.3 mm.
3. The vitamin and shock absorber bionic foot pad according to claim 1, wherein: the said process
The number of the penetrating compartments (12) is 50, and the number ratio of the penetrating compartments (12) which are sequentially separated along the four sides of the rectangular cross section of the bionic foot pad shell (1) is 5:8:5:7.
4. the vitamin and shock absorber bionic foot pad according to claim 1, wherein: the bionic foot pad shell (1) is made of thermoplastic polyurethane soft rubber with the hardness of 50.
5. The vitamin and shock absorber bionic foot pad according to claim 1, wherein: the buffer filler (2) is made of AB silica gel material with the hardness of 30 HA and the elastic modulus of 1.15 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311611293.2A CN117413993A (en) | 2023-11-29 | 2023-11-29 | Steady and slow-shock bionic foot pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311611293.2A CN117413993A (en) | 2023-11-29 | 2023-11-29 | Steady and slow-shock bionic foot pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117413993A true CN117413993A (en) | 2024-01-19 |
Family
ID=89523279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311611293.2A Pending CN117413993A (en) | 2023-11-29 | 2023-11-29 | Steady and slow-shock bionic foot pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117413993A (en) |
-
2023
- 2023-11-29 CN CN202311611293.2A patent/CN117413993A/en active Pending
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