Sole with damping function

Abstract

The utility model belongs to the technical field of shoe manufacturing, and particularly relates to a sole with a damping function. Comprises: a first sole layer in direct contact with a foot; the third sole layer is in direct contact with the ground, and a damping structure is arranged at the bottom of the third sole layer; the second sole layer is arranged between the first sole layer and the third sole layer, an auxetic structure is formed on the second sole layer in the height direction of the sole, and the auxetic structure is filled with an elastic material; the elastic unit is arranged between the first sole layer and the second sole layer, and the elastic unit is used for cooperating with the auxetic structure. The sole is of a multi-layer damping structure, and the damping effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of footwear manufacturing technology, and specifically refers to a shoe sole with shock absorption function. Background Technology

[0002] As a crucial component of footwear, the sole is widely used in various shoe styles, including athletic shoes, casual shoes, work shoes, and outdoor shoes. It not only provides support and protection for the feet but also significantly influences the shoe's comfort, stability, and adaptability to different ground surfaces. During daily activities such as walking, running, and jumping, the sole needs to withstand the weight of the body and the reaction force from the ground. Especially in sports settings, good sole performance plays a key role in reducing foot fatigue, preventing sports injuries, and improving athletic performance.

[0003] However, current shoe sole technologies on the market have many shortcomings in terms of shock absorption. For example, traditional soles are often made of a single material, such as ordinary rubber or foam, which has limited shock absorption. During strenuous exercise, these soles cannot effectively cushion the impact on the feet, leading to foot pain and potentially causing joint damage with long-term use. Taking common athletic shoe soles as an example, while some soles can provide basic cushioning to a certain extent, their shock absorption capacity is clearly insufficient when facing high-intensity athletic impacts, such as prolonged running or frequent jumping, failing to fully meet the shock absorption and protection needs of athletes and sports enthusiasts. Therefore, developing a sole with more efficient shock absorption has become an urgent problem to be solved in the current footwear technology field. Utility Model Content

[0004] The sole of this invention has a multi-layer shock-absorbing structure, resulting in good shock absorption.

[0005] The purpose of this utility model is achieved as follows: a shoe sole with shock absorption function, comprising:

[0006] The first layer of the shoe is the bottom layer, which comes into direct contact with the foot;

[0007] The third shoe sole is in direct contact with the ground, and the bottom of the third shoe sole is equipped with a shock-absorbing structure;

[0008] The second shoe sole is located between the first shoe sole and the third shoe sole. The second shoe sole has a tensile structure along the height direction of the sole, and the interior of the tensile structure is filled with an elastic material.

[0009] An elastic element is disposed between the first and second shoe soles, and the elastic element is used to work in conjunction with the expansion structure.

[0010] The present invention is further configured such that the shock-absorbing structure includes:

[0011] Elastic protrusions are arranged along the length of the sole at the bottom of the third insole.

[0012] The wavy groove is formed along the length of the sole on the side of the elastic protrusion closest to the ground;

[0013] The elastic protrusions on the forefoot and heel of the third shoe sole are spherical.

[0014] The present invention is further configured such that the expansion structure is composed of multiple interconnected expansion units arranged in a triangular pattern.

[0015] The present invention is further configured such that the expansion unit includes:

[0016] Flexible outer wall, used to define the shape of the expansion unit;

[0017] The pleated portion is located on the flexible outer wall and can expand and contract when the expansion unit is subjected to stress and deformation.

[0018] The present invention is further configured such that the elastic material is a thermoplastic elastomer.

[0019] The present invention is further configured such that the elastic unit comprises:

[0020] The air chamber is located in the heel area;

[0021] Airbag, located in the forefoot area;

[0022] The catheter is connected at one end to the air chamber and at the other end to the air bag;

[0023] The first and second shoe soles are provided with air chamber grooves for accommodating air chambers and air bladder grooves for accommodating air bladders.

[0024] The present invention is further configured such that the elastic unit further includes:

[0025] A one-way valve is installed on the conduit;

[0026] The vent is located on the conduit and between the check valve and the air chamber;

[0027] The one-way valve is used to prevent backflow of gas entering the airbag, and the air hole is used to provide external gas to the air chamber.

[0028] The present invention is further configured such that the elastic unit further includes:

[0029] The spring has its two ends abutting against the top and bottom sides of the air chamber;

[0030] The spring is used to allow external gas to flow into the air chamber through the air hole.

[0031] By adopting the above technical solution, the beneficial effects that this utility model can achieve are:

[0032] 1. By setting the first shoe sole to be in direct contact with the foot, the third shoe sole to have a shock-absorbing structure at the bottom that is in contact with the ground, and a second shoe sole with a tensile structure filled with elastic material between the first and third shoe soles, and working together with the elastic unit, the multiple structures work together to effectively buffer the impact force from the ground, reduce the vibration of the foot, improve the overall shock absorption performance of the sole, and enhance the comfort of wearing.

[0033] 2. The expansion structure consists of multiple interconnected expansion units arranged in a triangular pattern. This structure allows each expansion unit to deform collaboratively when the sole is subjected to force in different directions. The flexible outer wall of the expansion unit defines the shape, and the folds can expand and contract. In conjunction with the elastic filling material, the sole can better adapt to pressure changes in different directions and to different degrees, improving the flexibility and cushioning effect of the sole's cushioning deformation.

[0034] 3. The elastic unit has an air chamber in the heel and an air bladder in the forefoot, which are connected by a conduit. The conduit is equipped with a one-way valve to prevent gas backflow, air holes to supply external gas to the air chamber, and a spring to allow external gas to flow into the air chamber. During walking or exercise, the forefoot and heel can achieve reasonable gas distribution and regulation according to their respective forces through the air chamber, air bladder, and conduit. This allows different areas of the sole to flexibly perform shock absorption and cushioning according to the actual force, improving the targeted and effective shock absorption of different parts of the sole. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0036] Figure 2 This is a utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0037] Figure 3 This is a utility model Figure 2 A magnified structural diagram of part A.

[0038] The reference numerals in the figure are as follows: 1. First shoe sole; 2. Second shoe sole; 3. Third shoe sole; 4. Shock-absorbing structure; 40. Elastic protrusion; 41. Wave-shaped groove; 5. Tension structure; 50. Flexible outer wall; 51. Fold; 6. Elastic material; 7. Elastic unit; 70. Air chamber; 71. Air bladder; 72. Conduit; 73. One-way valve; 74. Air hole; 75. Spring. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-3 :

[0040] Example 1:

[0041] This embodiment provides a shoe sole with shock absorption function, including:

[0042] The first shoe sole 1 is in direct contact with the foot;

[0043] The third shoe bottom layer 3 is in direct contact with the ground, and the bottom of the third shoe bottom layer 3 is provided with a shock-absorbing structure 4;

[0044] The second shoe bottom layer 2 is located between the first shoe bottom layer 1 and the third shoe bottom layer 3. The second shoe bottom layer 2 has a tensile structure 5 along the height direction of the shoe sole. The interior of the tensile structure 5 is filled with an elastic material 6.

[0045] An elastic unit 7 is disposed between the first shoe sole 1 and the second shoe sole 2, and the elastic unit 7 is used to work in conjunction with the tensile structure 5.

[0046] The first insole 1, being the part of the sole that directly contacts the foot, primarily serves to support the foot, provide a comfortable surface for stepping, and transmit foot pressure to the underlying structure. It also protects the foot from discomfort caused by the underlying structure, such as preventing overly hard components from chafing the foot. The first insole 1 is located at the top layer of the sole and is in direct contact with the foot.

[0047] The third insole layer 3 is in direct contact with the ground and bears the main functions of wear resistance, slip resistance, and initial shock absorption. It protects the internal structure of the sole from direct wear and impact damage from the ground, ensuring the overall lifespan of the sole and walking safety. The third insole layer 3 is located at the bottom of the sole, and its upper part is connected to the second insole layer 2.

[0048] Shock-absorbing structure 4 is used to absorb impact forces from the ground. When people walk, run, or engage in other activities, their feet come into contact with the ground, generating a certain amount of impact force. Shock-absorbing structure 4 can act as a buffer in this process, reducing the transmission of impact force to the feet.

[0049] The second insole layer 2, located between the first insole layer 1 and the third insole layer 3, further cushions and disperses pressure. Its internal tensile structure 5, combined with the elastic filling material 6, allows for adaptive deformation and energy absorption based on foot pressure and impact from the ground, enhancing the sole's shock absorption and comfort. It also provides structural support to maintain the sole's shape stability. The second insole layer 2 is situated below the first insole layer 1 and above the third insole layer 3, and is tightly connected to the upper and lower layers. This connection can be achieved through adhesive bonding, thermoforming, or mechanical nesting.

[0050] The tensile structure 5 plays a crucial role in the cushioning system of the shoe sole. When the foot applies pressure to the sole, such as during walking, running, or jumping, the tensile structure 5 effectively cushions the pressure from the foot. It absorbs and disperses energy through its own deformation, converting concentrated pressure into structural deformation energy, thereby reducing the impact on the foot and the entire sole structure.

[0051] The elastic material 6 filled within the expansion structure 5 is used to ensure that the expansion structure 5 deforms when the sole is subjected to ground impact. The filled elastic material 6 can absorb and store energy through its own elastic deformation during the deformation process of the expansion unit.

[0052] The elastic unit 7 is disposed between the first shoe sole 1 and the second shoe sole 2, and works in conjunction with the expansion structure 5 of the second shoe sole 2 to further enhance the shock absorption performance of the sole.

[0053] Example 2:

[0054] This embodiment provides a shoe sole with shock absorption function, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] The damping structure 4 includes:

[0056] Elastic protrusions 40 are arranged along the length of the sole at the bottom of the third sole layer 3;

[0057] A wave-shaped groove 41 is formed along the length of the sole on the side of the elastic protrusion 40 closest to the ground;

[0058] The elastic protrusions 40 of the third shoe bottom layer 3 located at the forefoot and heel are spherical.

[0059] The elastic protrusions 40 are used for shock absorption and pressure distribution. When the sole contacts the ground, the elastic protrusions 40 can absorb part of the impact force through their own elastic deformation, dispersing the concentrated pressure from the ground to the entire bottom of the sole, thereby reducing the vibration experienced by the foot. The elastic protrusion 40 is an independent protruding structure with a certain amount of elastic material 6 inside, enabling elastic deformation. The elastic protrusions 40 are arranged along the length of the sole at the bottom of the third insole layer 3. In terms of shape, they can be elongated, and the elastic protrusions 40 located in the forefoot and heel of the third insole layer 3 are spherical. The elongated elastic protrusions 40 provide continuous cushioning support along the length of the sole, while the spherical elastic protrusions 40 can better adapt to impact forces from different directions in the forefoot and heel areas of the foot, because the sphere has a relatively uniform elastic deformation capacity in all directions. The elastic protrusions 40 and the third insole layer 3 are integrally molded.

[0060] The wave-shaped groove 41 is used to cushion energy when the sole is subjected to ground pressure. Its wave-shaped design helps to disperse impact force, allowing pressure to be distributed more evenly on the bottom of the sole. The wave-shaped groove 41 is a continuous, wave-shaped groove structure formed on the side of the elastic protrusion 40 of the third insole 3 near the ground. The wave-shaped groove 41 is continuously distributed in a wave-like pattern along the length of the sole, working in conjunction with the elastic protrusion 40 to achieve shock absorption and anti-slip functions. The wave-shaped groove 41 is integrally formed with the third insole 3, and the structure is directly formed during the manufacturing of the third insole 3 using a mold.

[0061] Example 3:

[0062] This embodiment provides a shoe sole with shock absorption function, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0063] The expansion structure 5 consists of multiple interconnected expansion units arranged in a triangular pattern.

[0064] As a fundamental component of the expansion structure 5, the expansion unit absorbs and disperses energy through its own deformation when the sole is subjected to pressure. The overall structure formed by the interconnection of multiple expansion units enables the second shoe sole 2 to have good cushioning performance in different directions, adapting to the complex force conditions of the foot during various movements such as walking, running, and jumping, effectively reducing foot fatigue and discomfort. The expansion units are arranged in a triangular pattern inside the second shoe sole 2. This arrangement allows the expansion structure 5 to form a stable support and cushioning system when subjected to force, evenly distributing pressure.

[0065] Example 4:

[0066] This embodiment provides a shoe sole with shock absorption function, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0067] The expansion unit includes:

[0068] The flexible outer wall 50 is used to define the shape of the expansion unit;

[0069] A pleated portion 51 is provided on the flexible outer wall 50. The pleated portion 51 can expand and contract when the expansion unit is subjected to force and deformation.

[0070] The flexible outer wall 50 is used to define the shape of the expansion unit, maintaining its structural integrity and stability in an unstressed state. This gives the expansion unit a relatively fixed shape, facilitating its connection with other expansion units and its function within the sole structure. The flexible outer wall 50 is typically a closed, thin-walled shape that adapts to the overall shape of the expansion unit. For example, if the expansion unit is triangular, the flexible outer wall 50 is a corresponding triangular thin-walled outline, surrounding and enclosing it to form a relatively independent space to accommodate internal folds 51 and other structures. The flexible outer wall 50 is often made of materials with a certain degree of flexibility and strength, such as rubber or plastic. When connecting the flexible outer wall 50 to adjacent expansion units, a tight connection can be achieved through edge bonding, slots, and snap-fit ​​mechanisms. This ensures that when multiple expansion units are connected into a single expansion structure 5, there will be no gaps or easy breakage at the connection points.

[0071] The pleated portion 51 is a key structural component of the expansion unit, enabling elastic deformation and enhancing its shock absorption effect. When the expansion unit is subjected to external pressure, the pleated portion 51 can expand, increasing the deformation space of the expansion unit in the vertical direction, thereby better buffering pressure and absorbing energy. When the pressure disappears, the pleated portion 51 can contract back to its original state, allowing the expansion unit to return to its original shape and prepare for the next stress. The pleated portion 51 is typically a textured structure with pleats located on the bottom surface of the flexible outer wall 50. The pleats can be regular wavy, serrated, or other textured shapes that enable expansion and contraction. These pleats have gaps and connecting structures between them, allowing them to expand or contract regularly under stress. The pleated portion 51 is tightly connected to the flexible outer wall 50, generally through integral molding or strong bonding.

[0072] Example 5:

[0073] This embodiment provides a shoe sole with shock absorption function, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0074] The elastic material 6 is a thermoplastic elastomer.

[0075] Thermoplastic elastomers are materials that combine the high elasticity of rubber with the processability of plastics. They possess excellent elastic recovery, abrasion resistance, chemical corrosion resistance, and low-temperature performance, making them adaptable to various usage environments and stress conditions. They are ideal shock-absorbing filling materials for shoe soles. Thermoplastic elastomers can be injected or filled into the pre-defined space of the expansion structure 5 through their own viscosity, allowing them to naturally bond with the surrounding structure.

[0076] Example 6:

[0077] This embodiment provides a shoe sole with shock absorption function, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0078] The elastic unit 7 includes:

[0079] Air chamber 70, located in the heel area;

[0080] Airbag 71, located in the forefoot area;

[0081] The catheter 72 is connected at one end to the air chamber 70 and at the other end to the air bag 71;

[0082] The first shoe sole 1 and the second shoe sole 2 are provided with grooves for accommodating the air chamber 70 and the air bladder 71.

[0083] The air chamber 70 is located in the heel area, and its main function is to cushion and absorb shock during the stress process of the sole. The air chamber 70 also works in conjunction with the air bladder 71 through the conduit 72 to achieve gas flow and pressure regulation, jointly maintaining the overall pressure balance of the sole and making the stress distribution more even in different parts of the sole, further optimizing the shock absorption performance of the sole. The air chamber 70 is typically a relatively closed hollow structure, and its shape is generally adapted to the heel area. The air chamber 70 is connected to the first insole 1 and the second insole 2 by means of inlay or adhesive bonding.

[0084] The air bladder 71, located in the forefoot, also plays a crucial role in shock absorption and cushioning. During walking or exercise, the forefoot experiences significant pressure upon impact. The air bladder 71 absorbs and disperses this impact force through its elastic compression, converting it into the elastic potential energy of the gas, thus reducing the vibration felt by the foot. The air bladder 71 and the air chamber 70 are interconnected and work together. When the forefoot or heel experiences greater force, the gas can flow between them through the conduit 72, achieving dynamic pressure adjustment and making the overall force distribution of the sole more reasonable and even, synergistically improving the shock absorption performance of the sole. The air bladder 71 is typically a closed structure filled with gas and encased in an elastic, airtight material, its shape adapted to the forefoot. The air bladder 71 is fitted into grooves on the corresponding first and second insole soles 1 and 2, and is fixedly connected by adhesive or other sealing materials after being embedded in the grooves.

[0085] The conduit 72 serves as a channel for gas flow between the air chamber 70 and the air bladder 71, enabling communication between the two. During the stress process on the sole, when a larger force is applied to the heel or forefoot, causing a change in gas pressure in the air chamber 70 or air bladder 71, the conduit 72 guides the gas from the high-pressure area to the low-pressure area. This adjusts the pressure distribution across different parts of the sole, making the stress distribution more even and enhancing the overall shock absorption effect, thus ensuring wearing comfort. The conduit 72 is generally a flexible hollow tubular structure, with one end connected to the air chamber 70 via glue or a clip, and the other end connected to the air bladder 71 in the same way.

[0086] Example 7:

[0087] This embodiment provides a shoe sole with shock absorption function, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0088] The elastic unit 7 further includes:

[0089] A one-way valve 73 is provided on the conduit 72;

[0090] An air vent 74 is provided on the conduit 72 and located between the one-way valve 73 and the air chamber 70;

[0091] The one-way valve 73 is used to prevent the gas entering the airbag 71 from flowing back, and the air hole 74 is used to provide external gas to the air chamber 70.

[0092] The one-way valve 73 controls the flow direction of gas in the conduit 72, allowing gas to pass only in a specific direction and preventing backflow of gas into the air bladder 71. In the shoe's shock absorption system, when gas in the heel chamber 70 flows towards the forefoot air bladder 71 under pressure, the one-way valve 73 ensures that the gas flows smoothly to the air bladder 71; while when the air bladder 71 is compressed, it prevents the gas from flowing back into the chamber 70, ensuring that the gas flows in the preset direction, allowing the pressure regulation and shock absorption functions of the forefoot and heel areas of the shoe sole to be realized stably and orderly. At the same time, the one-way valve 73 helps maintain the pressure difference between the chamber 70 and the air bladder 71, ensuring that under different stress conditions, the gas can accurately flow from the high-pressure area to the low-pressure area, thereby effectively dispersing the impact force, optimizing the overall shock absorption effect of the shoe sole, and avoiding shock absorption dysfunction caused by gas backflow. Common shapes of the one-way valve 73 include cylindrical and spherical, and it can be connected to the conduit 72 by means of threaded connection or clamp connection.

[0093] The vent 74 provides external gas to the air chamber 70, allowing it to replenish gas lost due to compression and other factors, maintaining a suitable gas volume and pressure within the chamber. During use, as the air chamber 70 is repeatedly compressed and gas flows to the air bladder 71, the vent 74 allows outside air to enter, ensuring sufficient gas reserves to continue effectively providing shock absorption and cushioning under subsequent stress, thus maintaining the long-term effectiveness and stability of the shoe's shock absorption system. The vent 74 is a small hole in the conduit 72. Located between the one-way valve 73 and the air chamber 70, the vent 74 ensures that outside gas, protected by the one-way valve 73, enters the air chamber 70 only in the correct direction, without interfering with the normal gas flow between the air bladder 71 and the air chamber 70.

[0094] Example 8:

[0095] This embodiment provides a shoe sole with shock absorption function, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0096] The elastic unit 7 further includes:

[0097] Spring 75 has its two ends abutting against the top and bottom sides of air chamber 70;

[0098] The spring 75 is used to allow external gas to flow into the air chamber 70 through the air hole 74.

[0099] In this shoe sole shock absorption system, spring 75 primarily functions to facilitate gas flow. Its two ends abut against the top and bottom sides of air chamber 70, allowing external gas to flow into air chamber 70 through air holes 74. When the gas in air chamber 70 decreases due to flow towards air bladder 71, causing a decrease in pressure and creating a negative pressure, spring 75, through its elastic deformation and restoring force, compresses air chamber 70, allowing external air to enter more smoothly through air holes 74. This maintains a relative stability in the gas volume and pressure within air chamber 70, ensuring that air chamber 70 continues to effectively absorb shock and cushion the impact of the shoe sole during subsequent stress. Spring 75 can be connected to air chamber 70 by abutment or adhesive.

[0100] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A shoe sole with shock absorption function, characterized in that, include: The first shoe sole (1) is in direct contact with the foot; the third shoe sole (3) is in direct contact with the ground, and the bottom of the third shoe sole (3) is provided with a shock-absorbing structure (4); the second shoe sole (2) is located between the first shoe sole (1) and the third shoe sole (3), and the second shoe sole (2) has a tensile structure (5) formed along the height direction of the sole, and the interior of the tensile structure (5) is filled with elastic material (6); the elastic unit (7) is located between the first shoe sole (1) and the second shoe sole (2), and the elastic unit (7) is used to work in conjunction with the tensile structure (5); wherein, the shock-absorbing structure (4) includes: elastic protrusions (40) arranged along the length direction of the sole at the bottom of the third shoe sole (3); and wave-shaped grooves (41) along the shoe sole. The bottom is opened along the length direction of the elastic protrusion (40) on the side close to the ground; the expansion structure (5) is composed of multiple interconnected expansion units arranged in a triangular pattern; the expansion unit includes: a flexible outer wall (50) for defining the shape of the expansion unit; a pleated part (51) provided on the flexible outer wall (50), the pleated part (51) being able to expand and contract when the expansion unit is deformed by force; the elastic unit (7) includes: an air chamber (70) located in the heel; an air bladder (71) located in the forefoot; a conduit (72) with one end connected to the air chamber (70) and the other end connected to the air bladder (71); wherein, the first shoe sole (1) and the second shoe sole (2) are provided with grooves for accommodating the air chamber (70) and the air bladder (71).

2. The shoe sole with shock absorption function according to claim 1, characterized in that, The elastic material (6) is a thermoplastic elastomer.

3. A shoe sole with shock absorption function according to claim 1, characterized in that, The elastic unit (7) further includes: A one-way valve (73) is provided on the conduit (72); An air vent (74) is provided on the conduit (72) and located between the check valve (73) and the air chamber (70); The one-way valve (73) is used to prevent the gas entering the airbag (71) from flowing back, and the air hole (74) is used to provide external gas to the air chamber (70).

4. A shoe sole with shock absorption function according to claim 3, characterized in that, The elastic unit (7) further includes: A spring (75) is attached at both ends to the top and bottom sides of the air chamber (70); wherein the spring (75) is used to allow external gas to flow into the air chamber (70) through the air hole (74).

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