A sole with double shock absorbing air compression ball structure

Abstract

The present application relates to the technical field of shoe sole, especially to a shoe sole with double shock-absorbing air compression ball structure. The shoe sole comprises a midsole with a piston shaft arranged on the lower side, a lower sole connected with the midsole, an air cylinder connected with the lower sole, and an elastic ball sleeved on the periphery of the air cylinder; the air cylinder is internally provided with a movable groove, one end of the movable groove is an opening, and the piston shaft is slidably connected with the movable groove through the opening. The present application is provided with a double shock-absorbing structure at the heel of the shoe sole. The primary shock-absorbing structure is the elastic ball, which is compressed when subjected to pressure, thereby playing a role in slowing down the falling. The secondary shock-absorbing structure is the sealed air cylinder. During the process of continuously applying pressure, the piston shaft is constantly pressed down, and the air in the sealed air cylinder is compressed, thereby also playing a role in slowing down the speed. The double shock-absorbing structure makes the overall buffering capacity of the shoe sole stronger, effectively reduces the shock, and improves the wearing experience of the user.

Description

Technical Field

[0001] This invention relates to the field of shoe sole technology, and more particularly to a shoe sole with a dual shock-absorbing air compression ball structure. Background Technology

[0002] With the rapid development of society and the economy, people's demands for various products are becoming increasingly diversified, especially in terms of comfort. Shoes are an indispensable daily necessity, and the sole is a crucial part of the shoe, significantly impacting comfort. Current shoe sole technology often utilizes the inherent shock-absorbing properties of the sole material itself to reduce pressure generated during running and jumping, thereby improving foot comfort. However, improvements to sole shock absorption solely through material design are limited; a more comprehensive approach is needed, focusing on the shock-absorbing structure. Current technologies often only incorporate a single shock-absorbing structure, which cannot completely counteract the reaction force generated by the foot during strenuous exercise. Summary of the Invention

[0003] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a shoe sole with a dual shock-absorbing air compression ball structure. The dual shock-absorbing structure is provided at the heel of the sole. The primary shock-absorbing structure is an elastic ball that is compressed when subjected to pressure, thereby slowing down the fall. The secondary shock-absorbing structure is a sealed air cylinder. When pressure is continuously applied, the piston shaft continuously presses down, and the air in the sealed air cylinder is compressed, which also slows down the speed. This dual shock-absorbing structure makes the overall cushioning capacity of the shoe sole stronger, effectively absorbs shock, and improves the user's wearing experience.

[0005] This invention provides a shoe sole with a dual shock-absorbing air compression ball structure, comprising a midsole with a piston shaft extending from its lower side, a lower sole connected to the midsole, an air cylinder connected to the lower sole, and an elastic ball sleeved around the air cylinder. The lower sole has a connecting groove, within which both the air cylinder and the elastic ball are located. The air cylinder has a movable groove inside, one end of which is open, through which the piston shaft is slidably connected. The elastic ball located at the heel serves as the primary shock-absorbing structure, providing cushioning during compression due to its material and structure. Simultaneously, the piston shaft and air cylinder work together to form a secondary shock-absorbing structure, providing cushioning by compressing the air between them. The connecting groove at the heel of the lower sole accommodates this dual shock-absorbing structure, making it visible from the outside while located within the shoe sole.

[0006] In some embodiments, the elastic ball has a central channel along its central axis, through which it is fitted onto the air cylinder. The elastic ball contains several compression chambers, each communicating with the central channel. The central channel serves to fix the elastic ball and prevent it from rolling or shifting during downward pressure. One end of the piston shaft is inserted into the air cylinder and slides up and down with changes in upward pressure. The elastic ball is fitted around both. When the sole contacts the elastic ball and is pressed down, the air in the compression chamber of the elastic ball is expelled. The loose internal structure of the elastic ball increases the shock absorption and cushioning capacity of the bottom, and the interface between the piston shaft and the air cylinder is not exposed due to the blocking effect of the elastic ball.

[0007] In some embodiments, the elastic ball has a central channel along its central axis, through which it is fitted onto the air cylinder, with the remaining portion of the elastic ball being solid. The central channel is used to fix the elastic ball and prevent it from rolling or shifting during compression. The portion of the elastic ball other than the central channel can also be solid, with the cushioning and shock absorption function solely provided by the material of the elastic ball itself. Preferably, the elastic ball is made of elastic foam or rubber, which has the characteristics of high elasticity and easy shaping, making it suitable for shoe sole production. However, it should be understood that this application does not limit the material of the elastic ball; the elastic ball includes but is not limited to the aforementioned materials.

[0008] In some embodiments, the bottom end of the air cylinder is connected to the undersole, the top end of the air cylinder has an opening that communicates with the movable groove, the top end of the piston shaft is connected to the midsole, and the bottom end of the air cylinder is slidably disposed within the movable groove. When the manufacturer produces the sole, the undersole with the communicating groove and air cylinder is removed, the elastic ball is fitted over the air cylinder, then the upper sole with the piston shaft is removed, and the piston shaft is inserted into the air cylinder along the central channel of the elastic ball, allowing the piston shaft to slide within the movable groove of the air cylinder. The remaining parts of the midsole and undersole are aligned and glued together to ensure a secure connection, thus completing the production of the sole.

[0009] In some embodiments, the outer wall of the piston shaft is provided with a groove in annular shape, and a piston ring is disposed in the groove. The piston ring is provided to ensure the airtightness of the secondary damping structure and prevent air leakage. The cooperation between the air cylinder, the piston shaft and the piston ring forms a structure similar to a syringe. While ensuring airtightness, the gas in the hollow air cylinder is continuously compressed, and the force resisting compression becomes greater and greater, thereby slowing down the falling speed.

[0010] In some embodiments, the piston ring size is matched to the size of the movable groove. This matching size helps ensure the airtightness of the internal space of the air cylinder.

[0011] In some embodiments, the connecting groove is axially disposed on the lower bottom, and both sides of the connecting groove are connected to the outside. Assuming the direction from the heel to the forefoot is radial, then the direction from the inner side of the arch to the outer side of the arch is axial. The connecting groove is axially disposed at the heel of the lower bottom and is connected to the outside on both sides, so that the entire double shock absorption structure is visible from the outside. Preferably, the upper side of the connecting groove is also connected to the outside.

[0012] In some embodiments, a retaining ring is provided at the connection between the air cylinder and the bottom sole, and a retaining groove is provided at the bottom of the elastic ball, which matches the retaining ring. The engagement of the retaining ring and the retaining groove fixes the elastic ball in place, preventing it from wobbling and affecting the integrity of the shoe sole.

[0013] In some embodiments, the elastic ball is fitted over the air cylinder and is rotatable. The elastic ball is not connected to the air cylinder and is visible from the outside of the sole. The user can manually rotate the elastic ball, increasing the fun of the sole.

[0014] By adopting the above technical solution, the beneficial effects of the present invention are:

[0015] This invention features a dual shock-absorbing structure at the heel of the shoe sole. The primary shock-absorbing structure is an elastic ball that compresses under pressure, thus slowing down the descent. The secondary shock-absorbing structure is a sealed air cylinder. As pressure is continuously applied, the piston shaft presses down, compressing the air inside the sealed air cylinder, which also slows down the speed. This dual shock-absorbing structure enhances the overall cushioning capacity of the shoe sole, effectively reducing shock and improving the user's wearing experience.

[0016] The present invention also provides a piston ring between the piston shaft and the air cylinder to increase the airtightness between the two, maintain the reaction force generated by the compressed air on the piston shaft, and play a role in shock absorption and pressure resistance. Multiple compression chambers can be set inside the elastic ball. When there is no force, the inside is filled with air. When force is applied, the gas is discharged, which slows down the pressure propagation rate and plays a role in shock absorption.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0018] Undoubtedly, such and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0019] To make the above and other objects, features and advantages of the present invention more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0021] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0023] Figure 1 This is a cross-sectional schematic diagram of the overall structure of the shoe sole in some embodiments of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the shoe heel in some embodiments of the present invention;

[0025] Figure 3 This is a schematic diagram showing the disassembled dual damping structure in some embodiments of the present invention;

[0026] Figure 4 This is a schematic diagram of the dual damping structure under pressure in some embodiments of the present invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of the dual damping structure in some embodiments of the present invention;

[0028] Figure 6 This is a cross-sectional schematic diagram of an elastic ball in some embodiments of the present invention;

[0029] Figure 7 This is a schematic diagram of the rotation of an elastic ball in some embodiments of the present invention;

[0030] Figure 8 This is a schematic diagram of the fixing ring and fixing groove structure in some embodiments of the present invention.

[0031] Explanation of key figure labels:

[0032] 1. Midsole; 2. Piston shaft; 3. Bottom sole; 4. Connecting groove; 5. Air cylinder; 6. Elastic ball; 7. Movable groove; 8. Opening; 9. Central channel; 10. Compression chamber; 11. Piston ring; 12. Groove; 13. Retaining ring; 14. Retaining protrusion. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0034] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies are not connected through a transitional structure, but rather formed as a whole through a connecting structure. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Example 1

[0038] Reference Figure 1-3 , Figure 1 This is a cross-sectional schematic diagram of the overall structure of the shoe sole in some embodiments of the present invention; Figure 2 This is a schematic diagram of the overall structure of the heel of a shoe in some embodiments of the present invention.

[0039] According to some embodiments of the present invention, the present invention provides a shoe sole with a dual shock-absorbing air compression ball structure, including a midsole 1 with a piston shaft 2 extending from the lower side, a lower sole 3 connected to the midsole 1, an air cylinder 5 connected to the lower sole 3, and an elastic ball 6 sleeved around the air cylinder 5. The lower sole 3 is provided with a connecting groove 4, and the air cylinder 5 and the elastic ball 6 are both located in the connecting groove 4. The air cylinder 5 has a movable groove 7 inside, one end of which is an opening 8. The piston shaft 2 is slidably connected to the movable groove 7 through the opening 8. The elastic ball 6 located at the heel of the shoe is a primary shock-absorbing structure. When pressed down, the material and structure of the elastic ball 6 play a buffering role. At the same time, the cooperation between the piston shaft 2 and the air cylinder 5 forms a secondary shock-absorbing structure, which plays a buffering role by compressing the air between the two. The connecting groove 4 at the heel of the lower sole 3 is provided to accommodate the dual shock-absorbing structure, so that the structure is located inside the shoe sole but is visible from the outside.

[0040] Reference Figure 3-5 , Figure 3 This is a schematic diagram showing the disassembled dual damping structure in some embodiments of the present invention; Figure 4 This is a schematic diagram of the dual damping structure under pressure in some embodiments of the present invention; Figure 5 This is a schematic diagram of the internal structure of the dual damping structure in some embodiments of the present invention.

[0041] Optionally, according to some embodiments of the present invention, the elastic ball 6 has a central channel 9 along its central axis, and the elastic ball 6 is fitted onto the air cylinder 5 through the central channel 9. The remaining part of the elastic ball 6 is solid. The central channel 9 is provided to fix the elastic ball 6 and prevent it from rolling and shifting during the downward pressure. The part of the elastic ball 6 other than the central channel 9 can also be solid, and the cushioning and shock absorption function is achieved solely by the material of the elastic ball 6 itself. The elastic ball 6 is an elastic foam material, which has the characteristics of high elasticity and easy shaping, and is suitable for shoe sole production.

[0042] According to some embodiments of the present invention, optionally, the bottom end of the air cylinder 5 is connected to the lower sole 3, the top end of the air cylinder 5 is provided with the opening 8, the opening 8 communicates with the movable groove 7, the top end of the piston shaft 2 is connected to the midsole 1, and the bottom end of the air cylinder 5 is slidably disposed in the movable groove 7. When the manufacturer produces the sole, the lower sole 3 with the communicating groove 4 and the air cylinder 5 is taken out, the elastic ball 6 is placed on the air cylinder 5, then the upper sole with the piston shaft 2 is taken out, and the piston shaft 2 is inserted into the air cylinder 5 along the central channel 9 of the elastic ball 6, so that the piston shaft 2 can slide in the movable groove 7 of the air cylinder 5. The remaining parts of the midsole 1 and the lower sole 3 are aligned and glued together to ensure a stable connection, and the production of the sole is completed.

[0043] According to some embodiments of the present invention, optionally, a groove 12 is provided annularly on the outer wall of the piston shaft 2, and a piston ring 11 is disposed within the groove 12. The piston ring 11 is provided to ensure the airtightness of the secondary damping structure and prevent air leakage; the cooperation between the air cylinder 5, the piston shaft 2 and the piston ring 11 forms a structure similar to a syringe. While ensuring airtightness, the gas present in the hollow air cylinder 5 is continuously compressed, and the force resisting compression becomes greater and greater, thereby slowing down the falling speed.

[0044] According to some embodiments of the present invention, optionally, the piston ring 11 is sized to match the movable groove 7. This size matching helps ensure the airtightness of the internal space of the air cylinder 5. The piston ring is made of rubber.

[0045] Optionally, according to some embodiments of the present invention, the connecting groove 4 is axially disposed on the lower sole 3, and both sides of the connecting groove 4 are connected to the outside. If the direction from the heel to the forefoot is radial, then the direction from the inner side of the arch to the outer side of the arch is axial. The connecting groove 4 is axially disposed at the heel of the lower sole 3 and connected to the outside on both sides, making the entire double shock-absorbing structure visible from the outside. The upper side of the connecting groove 4 is also connected to the outside.

[0046] Reference Figure 7 , Figure 7 This is a schematic diagram of the rotation of an elastic ball in some embodiments of the present invention.

[0047] According to some embodiments of the present invention, optionally, the elastic ball 6 is sleeved outside the air cylinder 5, and the elastic ball 6 is rotatable. The elastic ball 6 is not connected to the air cylinder 5, and the elastic ball 6 is visible from the outside of the sole. The user can rotate the elastic ball 6 by manually turning it, increasing the fun of the sole.

[0048] The present invention also provides a shoe with a dual shock-absorbing air compression ball structure, including the above-mentioned dual shock-absorbing air compression ball structure.

[0049] Example 2

[0050] Reference Figure 6 and Figure 8 , Figure 6 This is a cross-sectional schematic diagram of an elastic ball in some embodiments of the present invention; Figure 8 This is a schematic diagram of the fixing ring and fixing groove structure in some embodiments of the present invention.

[0051] The main difference between this embodiment and Embodiment 1 is as follows:

[0052] The elastic ball 6 has a central channel 9 along its central axis. The elastic ball 6 is fitted onto the air cylinder 5 through the central channel 9. The elastic ball 6 has several compression chambers 10 inside, each of which is connected to the central channel 9. The central channel 9 is used to fix the elastic ball 6 and prevent it from rolling or shifting during the downward pressure. One end of the piston shaft 2 is inserted into the air cylinder 5 and slides up and down with the change of pressure above. At this time, the elastic ball 6 is fitted around both of them. When the bottom 1 contacts the elastic ball 6 and is pressed down, the air in the compression chamber 10 of the elastic ball 6 is discharged. The loose internal structure of the elastic ball 6 can increase the shock absorption and cushioning capacity of the bottom 3. At the same time, the interface between the piston shaft 2 and the air cylinder 5 is not exposed due to the obstruction of the elastic ball 6.

[0053] A retaining ring 13 is provided at the connection between the air cylinder 5 and the bottom sole 3, and a retaining groove 14 is provided at the bottom of the elastic ball 6, which matches the retaining ring 13. Through the cooperation of the retaining ring 13 and the retaining groove 14, the elastic ball 6 can be fixed in position, preventing it from shaking and affecting the integrity of the shoe sole.

[0054] The elastic ball 6 is made of rubber, which is elastic and has a certain degree of plasticity, making it adaptable to the complexity of the compression chamber structure.

[0055] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0056] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0057] Furthermore, the described features or characteristics can be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented without the aforementioned specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A shoe sole with a dual shock-absorbing air compression ball structure, characterized in that, include The midsole has a piston shaft extending from its lower side; The bottom is connected to the middle bottom, and the bottom is provided with a connecting groove; An air cylinder, which is connected to the bottom and located within the communicating groove; An elastic ball is fitted around the air cylinder and located inside the communicating groove; The air cylinder has a movable groove inside, one end of which is open, and the piston shaft is slidably connected to the movable groove through the opening; The elastic ball has a central channel along its central axis. The elastic ball is fitted onto the air cylinder through the central channel. The elastic ball has several compression chambers inside, and each compression chamber is connected to the central channel. The bottom end of the air cylinder is connected to the lower bottom, the top end of the air cylinder is provided with the opening, the opening communicates with the movable groove, the top end of the piston shaft is connected to the middle bottom, and the bottom end of the air cylinder is slidably disposed in the movable groove; The piston shaft has an annular groove on its outer wall, and a piston ring is placed inside the groove.

2. The shoe sole with a dual shock-absorbing air compression ball structure according to claim 1, characterized in that, The elastic ball has a central channel along its central axis, and the elastic ball is fitted onto the air cylinder through the central channel. The rest of the elastic ball is solid.

3. The shoe sole with a dual shock-absorbing air compression ball structure according to claim 1, characterized in that, The piston ring size is matched to the size of the movable groove.

4. The shoe sole with a dual shock-absorbing air compression ball structure according to claim 1, characterized in that, The connecting groove is axially positioned on the lower bottom, and both sides of the connecting groove are connected to the outside.

5. The shoe sole with a dual shock-absorbing air compression ball structure according to claim 1, characterized in that, A retaining ring is provided at the connection between the air cylinder and the bottom, and a retaining groove is provided at the bottom of the elastic ball, which matches the retaining ring.

6. The shoe sole with a dual shock-absorbing air compression ball structure according to claim 1, characterized in that, The elastic ball is fitted outside the air cylinder and can rotate.

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