Sole and shoe

Abstract

The utility model discloses a sole capable of adjusting bending rigidity and a shoe, a sole body is provided with a first sliding groove extending along the front-back direction, the first sliding groove accommodates a sliding piece capable of sliding along the front-back direction, and the sliding piece is used for enhancing the rigidity of the sole. The two ends of the sliding piece are connected with inhaul cables which are connected with the driving piece. The control piece controls the driving piece, so that the driving piece pulls the inhaul cable to drive the sliding piece to slide forwards or backwards. The sliding parts are located at different parts of the sole, and the sole has different bending rigidities, so that the use requirements of users in different scenes are met.

Description

Technical Field

[0001] This application relates to the field of footwear technology, specifically to a sole and shoe with adjustable bending stiffness. Background Technology

[0002] After production, shoes typically have a fixed flexural stiffness. However, with societal development, consumers have varying requirements for the flexural stiffness of the sole for the same pair of shoes depending on the sport or lifestyle. For example, during high-intensity basketball games, increased forefoot flexural stiffness improves performance in jumping and changing direction; conversely, during low-intensity training, games, or everyday wear, reduced forefoot flexural stiffness enhances comfort. Carrying two pairs of shoes with different flexural stiffnesses to meet these different needs is inconvenient for consumers. Therefore, a shoe with adjustable sole flexural stiffness is needed to satisfy these consumer demands.

[0003] Shoe soles typically consist of an insole, midsole, and outsole. The insole's main function is to absorb sweat and reduce friction between the shoe and the foot. The outsole's main functions are wear resistance and slip resistance. The midsole's main functions are shock absorption, cushioning, and providing rigidity to the sole. Adjusting the flexural stiffness of the sole primarily involves adjusting the flexural stiffness of the midsole itself. Currently, this is achieved by incorporating a sliding component that slides along the fore-and-aft direction within the midsole. By manually adjusting the position of this sliding component along the fore-and-aft direction, the flexural stiffness of the midsole is adjusted, thereby regulating the overall flexural stiffness of the sole.

[0004] Although this method can adjust the bending stiffness of the shoe sole, it requires manual operation and is cumbersome and inconvenient for users. Utility Model Content

[0005] The purpose of this application is to overcome the aforementioned defects or problems in the prior art and to provide a shoe sole and shoe with adjustable bending stiffness via a motor.

[0006] To achieve the above objectives, the following technical solution is adopted:

[0007] A shoe sole includes: a midsole body having a first groove extending in a front-to-back direction; a slider for reinforcing the rigidity of the sole, extending in a front-to-back direction and housed within the first groove; a cable connecting both ends of the slider and extending out of the first groove; a drive member housed within the midsole body for pulling the cable to drive the slider to slide in the first groove in a front-to-back direction; and a control member exposed on the side of the midsole body for controlling the drive member to drive the slider to slide forward or backward to the top of the first groove.

[0008] Furthermore, the driving component is a motor, which drives the sliding component to slide forward or backward in a corresponding manner by rotating forward or in reverse.

[0009] Furthermore, the control element is a push-button switch, and the rotation direction of the motor changes each time the control element is pressed.

[0010] Furthermore, it also includes a first conduit, which is located within the first groove and fixed relative to the midsole body, the slider slides within the first conduit, and the cable extends from the first conduit to connect with the drive member.

[0011] Furthermore, the midsole body is also provided with a second, a third, a fourth, and a fifth groove. The second groove is located at the toe of the forefoot and extends in the left-right direction. The third groove is located at the heel of the heel and extends in the left-right direction. The fourth groove is located on the side of the forefoot to the arch and extends in the front-back direction. The fifth groove is located on the side of the arch to the heel and extends in the front-back direction. The front end of the first groove is connected to the second groove, and the rear end of the first groove is connected to the third groove. The second groove is connected to the front end of the fourth groove, and the third groove is connected to the rear end of the fifth groove.

[0012] Furthermore, each of the grooves in the midsole body is equipped with a guide tube and fixed relative to the midsole body. The guide tube includes a second guide tube, a third guide tube, a fourth guide tube, and a fifth guide tube. The second guide tube is installed in the second groove, the third guide tube is installed in the third groove, the fourth guide tube is installed in the fourth groove, and the fifth guide tube is installed in the fifth groove. The cable passes through the guide tube and is connected to the drive member.

[0013] Furthermore, the second conduit has a protruding first conduit hole, and the front end of the first conduit is fitted outside the first conduit hole and fixed thereto; the third conduit has a protruding second conduit hole, and the rear end of the first conduit is fitted outside the second conduit hole and fixed thereto.

[0014] Furthermore, the arch portion of the midsole body is provided with an inlet conduit and an outlet conduit. The inlet conduit connects the fourth conduit to the drive component, and the outlet conduit connects the fifth conduit to the drive component.

[0015] Furthermore, there are several first slides, which are arranged in the left-right direction and are respectively connected to the second slide and the third slide. Each first slide is provided with the first guide tube, the sliding member and the cable.

[0016] In addition, this utility model also provides a shoe, including the sole described in any of the above claims.

[0017] Compared with existing technologies, the above solution has the following beneficial effects:

[0018] 1. The midsole body has a first groove extending in the front-to-back direction, and a sliding member extends in the front-to-back direction and is housed within the first groove. During use, the shoe primarily bends at the forefoot, and the bending stiffness of the sole mainly depends on the bending stiffness of the forefoot portion of the midsole body. The sliding member has greater stiffness than the midsole body; when it is located at the forefoot portion of the midsole body, it bends along with the midsole body, enhancing the bending stiffness of the sole. Simultaneously, the bending stiffness of the sole can be reduced by changing the position of the sliding member in the front-to-back direction of the midsole body. When the sliding member is not located at the forefoot portion, it does not bend along with the midsole body. A cable connects to both ends of the sliding member and is connected to a drive component. The drive component pulls the cable, driving the sliding member to slide in the groove in the front-to-back direction. A control component located on the side of the midsole body controls the drive component. Existing technology uses manual rotation to adjust the position of the slider in the midsole body along the front-back direction. This invention uses a control component to control the drive component to adjust the position of the slider in the midsole body along the front-back direction, which is more convenient and faster than existing technology.

[0019] 2. The drive mechanism uses a motor, which rotates forward or backward to drive the slider. Using a motor-driven slider saves manpower compared to manual operation, is more convenient, and improves the user experience.

[0020] 3. The control unit uses a push-button switch, which is simple to operate and provides clear feedback on stiffness adjustment. Each operation changes the direction of motor rotation, thus cycling between increasing and decreasing the bending stiffness of the sole. If the push-button switch increases the bending stiffness this time, the next operation decreases it; conversely, if it decreases, the next operation increases it. This process repeats, allowing users to accurately adjust the bending stiffness of the sole.

[0021] 4. A first guide tube is provided within the first groove, and the first guide tube is fixedly connected to the midsole body. The sliding component slides within the first guide tube in the front-to-back direction. The midsole body provides cushioning and shock absorption, while the sliding component enhances the bending stiffness of the midsole body. The rigidity of the sliding component is greater than that of the midsole body; its sliding within the first groove would damage the midsole body. The first guide tube within the first groove has a higher rigidity than the midsole body. The sliding component slides within the first guide tube without direct contact with the midsole body, thus preventing damage and improving the durability of the sole. The cable extends from the first guide tube and connects to the drive component; that is, the cable slides within the first guide tube without rubbing against the midsole body, thereby improving the durability of the sole.

[0022] 5. The midsole body has a second groove extending in the left-right direction at the toe area of ​​the forefoot and a third groove extending in the left-right direction at the heel area. A fourth groove extending in the front-back direction is located on the side of the midsole body from the forefoot to the arch, and a fifth groove extending in the front-back direction is located on the side of the midsole body from the arch to the heel. The front end of the first groove connects to the second groove, and the rear end of the first groove connects to the third groove. The front ends of the second and fourth grooves connect to each other, and the rear ends of the third and fifth grooves connect to each other. These interconnected grooves form a continuous channel, allowing the cable to extend from the first guide tube and connect to the drive component via the interconnected grooves, facilitating the cable's sliding within the midsole body.

[0023] 6. Each groove is equipped with a guide tube, which is fixed to the midsole body. The midsole body serves as a cushion and absorbs shock, and its hardness is relatively low. Cables sliding within the midsole body would damage it. By installing guide tubes in each groove, forming interconnected channels, the cables pass through these tubes and connect to the drive component, preventing damage to the sole body and improving its durability. Simultaneously, the guide tubes allow the drive component to smoothly propel the sliding component.

[0024] 7. The second conduit has a protruding first conduit hole that communicates with the front end of the first conduit, and the third conduit has a protruding second conduit hole that communicates with the rear end of the first conduit. The second and third conduits are integrally formed with the protruding first and second conduit holes, respectively. Compared with the prior art, this solution uses a T-junction to connect the first and second conduits, and also uses a T-junction to connect the first and third conduits, resulting in higher stability.

[0025] 8. The fourth conduit is connected to the drive unit with an inlet conduit, and the fifth conduit is connected to the drive unit with an outlet conduit. The inlet and outlet conduits are fixed to the midsole body. The inlet and outlet conduits ensure smooth connection between the cable and the drive unit, preventing wear between the cable and the sole body and damage to the cable and sole body.

[0026] 9. Several grooves are arranged along the left and right directions. Each groove is equipped with a guide tube, a sliding component, and a cable. Different grooves are designed for different usage scenarios and customer needs, allowing for a wider range of adjustment for the bending stiffness of the shoe sole and meeting diverse requirements.

[0027] 10. Shoes manufactured using the above technical solutions can have their bending stiffness easily and quickly adjusted by operating a push-button switch to drive the motor. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings used are briefly described below:

[0029] Figure 1 This is a bottom view of the shoe midsole as an example.

[0030] Figure 2 This is a top view of the shoe midsole as an example.

[0031] Figure 3 This is a schematic diagram of the side of the shoe midsole in an example.

[0032] Explanation of key figure labels:

[0033] Midsole body 10; Forefoot portion 1; Arch portion 2; Heel portion 3; First groove 11; Second groove 12; Third groove 13; Fourth groove 14; Fifth groove 15; Inlet hole 16; Outlet hole 17; Slider 31; Cable 40; Drive component 60; Control key 61; First guide tube 21; Second guide tube 22; First guide tube hole 221; Third guide tube 23; Second guide tube hole 231; Fourth guide tube 24; Fifth guide tube 25; Inlet guide tube 26; Outlet guide tube 27. Detailed Implementation

[0034] Unless otherwise specified, the terms “first,” “second,” or “third,” etc., in the claims and description are used to distinguish different objects and not to describe a particular order.

[0035] Unless otherwise specified, in the claims and description, the terms “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “forward,” “reverse,” etc., indicating orientation or positional relationship, are based on the orientation and positional relationship shown in the drawings and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.

[0036] Unless otherwise specified in the claims and description, the terms "fixed connection" or "fixed connection" shall be interpreted broadly to mean any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection by other means or components.

[0037] Unless otherwise specified, in the claims and description, the terms "comprising," "having," and variations thereof mean "including but not limited to."

[0038] In the claims and description, unless otherwise specified, the term "have" means that a technical feature that follows is part of a technical feature that precedes it.

[0039] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.

[0040] See Figure 1 , Figure 2 and Figure 3 This invention illustrates a shoe midsole with adjustable bending stiffness according to an embodiment of the present invention. Figure 1 A top view of the shoe midsole. Figure 2 Top view of the shoe midsole Figure 3 This is a side view of the shoe midsole.

[0041] The above upward view is based on the orientation of the sole of the shoe. The orientation of the sole from the part in contact with the ground to the part in contact with the foot is considered an upward view. Figure 1 This is a top view of the midsole of the left shoe. The above top view is based on the orientation of the sole, that is, the orientation of the sole from the point of contact with the foot to the point of contact with the ground. Figure 2 This is a top view of the left shoe midsole. The midsole includes a midsole body 10, which includes a forefoot portion 1, an arch portion 2, and a heel portion 3. The midsole body 10 has a first groove 11 extending in a front-to-back direction, passing through the forefoot portion 1, the arch portion 2, and the heel portion 3. The front-to-back direction is based on the orientation of the sole of the foot, with the orientation from the toe to the heel being the front-to-back direction. A slider 31 is used to enhance the bending stiffness of the midsole body 10. It extends in a front-to-back direction and is housed within the first groove 11. The slider 31 can slide in the front-to-back direction within the first groove 11. In this embodiment, the slider 31 is made of carbon fiber. The length of the slider 31 extending in the front-to-back direction must meet the requirement that when it is located at the forefoot portion of the midsole body 10, it can bend along with the midsole body 10. When in use, the midsole body 10 primarily bends at the forefoot. The greater the bending stiffness in this area, the greater the bending stiffness of the midsole body 10, and consequently, the greater the bending stiffness of the sole. When the slider 31 is located at the forefoot of the midsole body 10, the bending stiffness of the sole increases; when the slider 31 is not located at this area, the bending stiffness decreases. In other words, when the slider 31 is located at the front end of the midsole body 10, the bending stiffness of the sole increases; when the slider is located at the rear end of the midsole body 10, the bending stiffness of the sole decreases. The length of the slider 31 is less than the length of the first groove 11. If the length of the slider 31 is equal to the length of the first groove 11, the slider 31 cannot slide in the front-back direction within the first groove 11, and the bending stiffness of the sole cannot be adjusted.

[0042] The cable 40 connects both ends of the slider 31 and extends out of the first groove 11, pulling the slider 31 to slide in the first groove 11 in the front-to-back direction. The cable 40 pulls the front end of the slider 31, causing it to slide forward, and the cable 40 pulls the rear end of the slider 31, causing it to slide backward. By pulling the slider 31 with the cable 40, the relative position of the slider 31 in the first groove 11 in the front-to-back direction can be changed without disassembling the midsole body 10.

[0043] Figure 1 and Figure 2 As shown, the drive member 60 is housed within the midsole body 10 and is used to pull the cable 40 to drive the slider 31 to slide in the first groove 11 in a front-to-back direction. In this embodiment, the drive member 60 is located above the slider 31. The "above" refers to the direction of the sole, which is defined as the vertical direction from the part of the sole in contact with the foot to the part in contact with the ground. The drive member 60 is located above the slider 31, meaning it is closer to the foot than the slider 31. The drive member 60 is housed in a rigid shell. The arch portion 2 of the midsole body 10 has a groove, and the rigid shell of the drive member 60 is adapted to be housed in this groove and fixed relative to the midsole body 10. Due to the physiological structure of the human foot, the arch portion 2 of the midsole body 10 has more space than the forefoot portion 1 and the heel portion 3, making it more suitable for accommodating the drive member 60. Simultaneously, the arch portion 2 of the midsole body 10 experiences less force during use than the forefoot portion 1 and the heel portion 3, better protecting the drive member 60 and making it less prone to damage.

[0044] In a preferred embodiment, the driving component 60 is a motor, which drives the sliding component 31 to slide forward or backward accordingly by rotating in both directions. In this embodiment, the driving component also includes components such as a battery, a winding reel, an output helical gear, a worm shaft, and a main control board. The rotation of the motor drives the worm shaft to rotate, the rotation of the worm shaft drives the output helical gear to rotate, the output helical gear drives the winding reel to rotate, and the rotation of the winding reel pulls the cable 40. The connection and transmission relationships of the above components are existing technologies and will not be described in detail here. The motor drives the winding reel to rotate in both directions by rotating in both directions. When the winding reel rotates in both directions, it pulls the cable 40 at the front end of the sliding component 31 and releases the cable 40 at the rear end of the sliding component 31, driving the sliding component 31 to slide towards the front end of the midsole body 10; when the winding reel rotates in both directions, it pulls the cable 40 at the rear end of the sliding component 31 and releases the cable 40 at the front end of the sliding component 31, driving the sliding component 31 to slide towards the rear end of the midsole body 10. In other words, by driving the winding wheel to rotate forward or backward by rotating the motor forward or backward, the cable 40 connecting both ends of the sliding member 31 is wound up or down, driving the sliding member 31 to slide forward or backward in the first groove 11.

[0045] The control element 61 protrudes from the side of the midsole body 10 and controls the drive element 60 to drive the slider 31 forward or backward to the top of the first groove 11. In a preferred embodiment, the control element 61 is a push-button switch, such as... Figure 1As shown, the push-button switch is located on the right surface of the rigid housing of the drive component and is electrically connected to the main control board of the drive component. It is surrounded by the midsole body 10, with the right side of the arch portion 2 of the midsole body 10 exposed. The left and right directions are based on the orientation of the foot, with the direction from the big to the little toe representing the left and right directions. The side of the midsole body 10 closest to the big toe is the left side, and the side closest to the little toe is the right side. In other words, the push-button switches on both the left and right soles are exposed on the side of the arch portion 2 near the little toe, facilitating operation of the corresponding left and right soles with each hand. Each operation of the push-button switch changes the direction of motor rotation. When the push-button switch is operated, the motor rotates forward, driving the slider 31 forward to the top of the front end of the first groove 11 and maintaining this state, increasing the bending stiffness of the sole. The next operation of the push-button switch reverses the motor, driving the slider 31 backward to the top of the rear end of the first groove and maintaining this state, reducing the bending stiffness of the sole. Pressing the switch again causes the motor to rotate forward, driving the slider 31 to slide forward to the top of the front end of the first groove 11 and maintaining this state, thus increasing the bending stiffness of the sole. This process is repeated in an alternating cycle. Pressing the switch allows the slider 31 to slide forward and backward, changing the bending stiffness of the sole. The operation is simple and the feedback is clear: if the bending stiffness of the sole increases, it decreases in the next cycle; if it decreases, it increases in the next cycle.

[0046] The midsole body 10 includes a first guide tube 21, which is located within a first groove 11 and fixed relative to the midsole body 10. A slider 31 slides within the first guide tube. The first groove 11 is located within the midsole body 10, and the slider 31 slides within the first groove 11. The midsole body 10 typically has a low hardness due to its function, while the slider 31, used to increase the rigidity of the midsole body 10, has a higher hardness. The high-hardness slider 31 sliding within the low-hardness first groove 11 of the midsole body 10 could easily damage the midsole body 10 due to friction. Therefore, the first guide tube 21 is installed in the first groove 11. The hardness of the first guide tube 21 is greater than that of the midsole body 10. The slider 31 slides within the first guide tube 21 in a front-to-back direction, preventing direct contact between the slider 31 and the midsole body 10 and thus avoiding damage.

[0047] In a preferred embodiment, the midsole body 10 further includes a second groove 12, a third groove 13, a fourth groove 14, and a fifth groove 15. The forefoot portion 1 of the midsole body 10 has a second groove 12 extending in a left-right direction at the toe position; the heel portion 3 has a third groove 13 extending in a left-right direction at the heel position; the left side of the forefoot portion 1 and the arch portion 2 has a fourth groove 14 extending in a front-back direction; and the left side of the arch portion 2 and the heel portion 3 has a fifth groove 15 extending in a front-back direction. The front end of the first groove 11 communicates with the rear end of the second groove 12, the rear end of the first groove 11 communicates with the front end of the third groove 13, the left end of the second groove 12 communicates with the front end of the fourth groove 14, and the left end of the third groove 13 communicates with the rear end of the fifth groove 15. The aforementioned front-back direction is based on the orientation of the sole of the foot, with the orientation from the toe to the heel being the front-back direction. The aforementioned left and right directions are based on the orientation of the sole of the foot, with the orientation from the big to the little toe representing the left and right directions. The second and third grooves 12 and 13 are arranged "extending in the left and right direction." "Extending in the left and right direction" can mean extending in a straight line, but it does not mean it can only extend in a straight line. In this embodiment, the second and third grooves 12 and 13 extend along the edge shapes of the front and rear ends of the midsole body 10, respectively. The grooves are interconnected, forming a connected channel. The cable 40 extends from the first guide tube 21, passes through the channel formed by the grooves, and connects to the drive member 60.

[0048] In a preferred embodiment, each groove of the midsole body 10 is further equipped with a guide tube, including a second guide tube 22, a third guide tube 23, a fourth guide tube 24, and a fifth guide tube 25. The second guide tube 22 is located in the second groove 12, the third guide tube 23 is located in the third groove 13, the fourth guide tube 24 is located in the fourth groove 14, and the fifth guide tube 25 is located in the fifth groove 15. Each guide tube is fixed to the opposite midsole body 10. The cable 40 extends from the first guide tube 21 and passes through the channel formed by the guide tube to connect with the drive member 60. The cable 40 at the front end of the slider 31 extends from the front end of the first guide tube 21 into the second guide tube 22 and the fourth guide tube 24 and connects with the drive member 60. The cable 40 at the rear end of the slider 31 extends from the rear end of the first guide tube 21 into the third guide tube 23 and the fifth guide tube 25 and connects with the drive member 60. The drive member 60 retracts and extends the cable 40, that is, the cable 40 slides within the guide tube. The cable 40 passes through the channel formed by the guide tube and connects to the drive component 60. That is, the cable 40 does not directly contact the midsole body 10, which can protect the midsole body 10 from wear by the cable 40 and provide durability to the shoe.

[0049] The second conduit 22 has a protruding first conduit hole 221 at the position corresponding to the front end of the first conduit 21. The front end of the first conduit 21 is fitted over the first conduit hole 221 and fixed thereto. The third conduit 23 has a protruding second conduit hole 231 at the position corresponding to the rear end of the first conduit 21. The rear end of the first conduit 21 is fitted over the second conduit hole 231 and fixed thereto. The second conduit 22 and the third conduit 23 are rigid conduits, typically made of materials such as nylon or TPU. The protruding first conduit hole 221 is integrally formed with the second conduit 22, and the protruding second conduit hole 231 is integrally formed with the third conduit 23. This integral design ensures high stability in the connection between the protruding first conduit hole 221 and the second conduit 22, and between the protruding second conduit hole 231 and the third conduit 23. After the cable 40 extends from the first conduit 21 into the second conduit 22 and the third conduit 23, it will turn at an angle of nearly 90°. When the cable 40 slides, it will apply significant pressure and friction to the conduits at the turning point. In this embodiment, the front end of the first conduit 21 is fitted over the outside of the protruding first conduit hole 221 of the second conduit 22, and the rear end of the first conduit 21 is fitted over the outside of the protruding second conduit hole 231 of the third conduit 23. When the cable 40 turns at the conduit connection, the pressure and friction of the cable 40 at the conduit connection are mainly applied to the protruding first conduit hole 221 and the second conduit hole 223. Because the protruding first conduit hole 221 and the second conduit hole 231 are made of rigid material and are integrally formed with the second conduit 22 and the third conduit 23 respectively, this part has high stability, is not easily damaged, and improves the overall running stability. The second conduit 22 is located at the toe position of the forefoot part 1 of the midsole body 10, and the third conduit 23 is located at the heel part 3 of the midsole body 10. Neither is located at the bending part of the forefoot part of the midsole body 10. The second conduit 22 and the third conduit 23 are rigid conduits and do not affect the bending stiffness of the midsole body 10.

[0050] In a preferred embodiment, the arch portion 2 of the midsole body 10 has an inlet hole 16 and an outlet hole 17 on the left side. An inlet conduit 26 is housed in the inlet hole 16 and fixed to the opposing midsole body 10; an outlet conduit 27 is housed in the outlet hole 17 and fixed to the opposing midsole body 10. The left side of the inlet conduit 26 communicates with the fourth conduit 24, and the right side communicates with the drive member 60; the left side of the outlet conduit 27 communicates with the fifth conduit 25, and the right side communicates with the drive member 60. When the cable 40 extends from the fourth conduit 24 and enters the inlet conduit 26 to connect with the drive member 60, there is a near 90° turn at the connection point between the fourth conduit 24 and the inlet conduit 26. The cable 40 applies significant pressure and friction to the inlet conduit 26 at this connection point as it slides. The inlet conduit 26 is made of rigid material, which prevents damage to the inlet conduit 26 during cable 40 sliding, thus improving overall operational stability. The fourth conduit 24 extends in the front-to-back direction, passing through the bend in the midsole body 10. If a rigid conduit were used for the fourth conduit 24, it would affect the rigidity of the midsole body 10 and could be damaged due to bending. Therefore, the fourth conduit 24 is not a rigid conduit. Without a rigid conduit for the fourth conduit 24, the cable 40 would exert significant pressure and friction on the fourth conduit 24 at the turning point when it enters the drive member 60, potentially damaging the midsole body 10 after the fourth conduit 24 is damaged. Therefore, the fourth conduit 24 is not a rigid conduit, but a rigid inlet conduit 26 is provided at the turning point where the cable 40 enters the drive member 60. Based on the above principle, the fifth conduit 25 is not a rigid conduit; a rigid outlet conduit 27 is provided at the turning point where the cable 40 enters the drive member 60.

[0051] In a preferred embodiment, four first sliding grooves 11 are provided in the midsole body 10, arranged along the left-right direction of the midsole body 10. Each first sliding groove 11 is provided with a first guide tube 21, a slider 31, and a pull cable 40. The arrangement of the four first sliding grooves 11 along the left-right direction of the midsole body 10 does not mean that the four first sliding grooves 11 are parallel to each other. The front ends of the four first sliding grooves 11 are all connected to the second sliding groove 12, and the rear ends are all connected to the third sliding groove 13. The four pull cables 40 are respectively connected to the corresponding sliders 31 and connected to the drive member 60. When the push switch is operated, the drive member 60 pulls the four pull cables 40 simultaneously, driving the four sliders 31 to slide forward or backward simultaneously. In other embodiments, different numbers of first sliding grooves 11 may be used depending on different application scenarios.

[0052] In addition, this utility model also provides a shoe that includes the aforementioned sole.

[0053] This invention provides an adjustable flexural stiffness shoe sole. The sole includes a midsole body 10, which has four first grooves 11 extending in the front-to-back direction and arranged in the left-to-right direction. A sliding member 31 is used to enhance the rigidity of the midsole body 10, and each first groove 11 is equipped with a sliding member 31 extending in the front-to-back direction. The flexural stiffness of the midsole body 10 mainly depends on the flexural stiffness of the forefoot portion 1. When the sliding member 31 is located at the forefoot portion 1 of the midsole body 10, the midsole body 10 bends, causing the sliding member 31 to bend along with it. The rigidity of the sliding member 31 is greater than that of the midsole body 10, and when it bends along with the midsole body 10, it increases the flexural stiffness of the sole. When the slider 31 is located at the front end of the midsole body 10, it is positioned at the forefoot 1, increasing the bending stiffness of the sole. When the slider 31 is located at the rear end of the midsole body 10, it is positioned at the forefoot 1, decreasing the bending stiffness of the sole. Cables 40 connect to both ends of each slider 31 and are connected to the drive unit 60. The drive unit 60 drives the slider 31 to slide in the first groove 11 in the front-to-back direction by extending and retracting the cables 40. The drive unit 60 is housed within the sole body 10 and is a motor. The motor's forward or reverse rotation simultaneously pulls the four cables 40, driving the four sliders 31 to slide in the first groove 11 in the front-to-back direction. The control unit 61 is located on the side of the sole body 10 and is a push-button switch. Operating the push-button switch causes the motor to rotate forward, driving the slider 31 to slide to the front end of the first groove 11, increasing the bending stiffness of the sole. Operating the push-button switch again causes the motor to rotate in reverse, driving the slider 31 to slide to the rear end of the first groove 11, decreasing the bending stiffness of the sole, and this cycle repeats. By operating the push-button switch, the bending stiffness of the sole can be adjusted via the motor, improving the ease of adjustment. The slider 31 and the cable 40 slide in the midsole body 10 in the front-to-back direction, which can easily cause friction and damage to the midsole body 10. The midsole body 10 is provided with a second groove 12, a third groove 13, a fourth groove 14, and a fifth groove 15. A second guide tube 22, a third guide tube 23, a fourth guide tube 24, and a fifth guide tube 25 are respectively installed in the grooves. The guide tubes are fixed to the corresponding midsole body 10, forming a connected passage. The slider 31 slides within the first guide tube 21; the cable 40 at the front end of the slider 31 slides within the first guide tube 21, the second guide tube 22, and the fourth guide tube 24, and passes through the guide tubes to connect with the drive member 60; the cable 40 at the rear end of the slider 31 slides within the first guide tube 21, the third guide tube 23, and the fifth guide tube 25, and passes through the guide tubes to connect with the drive member 60, so that the slider 31 and the cable 40 do not directly contact the midsole body 10, making it less likely to damage the midsole body 10 during sliding and improving the durability of the sole.

[0054] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A shoe sole, characterized by comprising: The midsole body (10) is provided with a first sliding groove (11) extending in the front-rear direction; a sliding member (31) for enhancing the rigidity of the sole, extending in the front-rear direction and accommodated in the first sliding groove (11); a pull cable (40) connecting both ends of the sliding member (31) and extending out of the first sliding groove (11); a driving member (60) accommodated in the midsole body (10) and used to pull the pull cable (40) to drive the sliding member (31) to slide in the first sliding groove (11) in the front-rear direction; and a control member (61) exposed on the side of the midsole body (10) and used to control the driving member (60) to drive the sliding member (31) to slide forward or backward to the top end of the first sliding groove (11). The driving member (60) is an electric motor, which correspondingly drives the sliding member (31) to slide forward or backward by forward rotation or reverse rotation.

2. A sole as claimed in claim 1, characterised in that The control member (61) is a press switch, and each time the control member (61) is pressed, the rotation direction of the electric motor changes.

3. A sole as claimed in claim 2, characterised in that It further comprises a first guide pipe (21) located in the first sliding groove (11) and fixed relative to the midsole body (10), and the sliding member (31) slides in the first guide pipe (21), and the pull cable (40) extends out of the first guide pipe (21) to be connected with the driving member (60).

4. A shoe sole as defined in claim 1, characterized in that The midsole body (10) is further provided with a second sliding groove (12), a third sliding groove (13), a fourth sliding groove (14) and a fifth sliding groove (15), the second sliding groove (12) extends in the left-right direction at the toe position of the forefoot (1), the third sliding groove (13) extends in the left-right direction at the heel position of the heel (3), the fourth sliding groove (14) extends in the front-rear direction at the side of the forefoot (1) to the arch (2), the fifth sliding groove (15) extends in the front-rear direction at the side of the arch (2) to the heel (3), the front end of the first sliding groove (11) is communicated with the second sliding groove (12), the rear end of the first sliding groove (11) is communicated with the third sliding groove (13), the second sliding groove (12) is communicated with the front end of the fourth sliding groove (14), and the third sliding groove (13) is communicated with the rear end of the fifth sliding groove (15).

5. A shoe sole as claimed in claim 4, characterized in that Each of the sliding grooves of the midsole body (10) is provided with a guide pipe fixed relative to the midsole body (10), and the guide pipe comprises a second guide pipe (22), a third guide pipe (23), a fourth guide pipe (24) and a fifth guide pipe (25), the second guide pipe (22) is installed in the second sliding groove (12), the third guide pipe (23) is installed in the third sliding groove (13), the fourth guide pipe (24) is installed in the fourth sliding groove (14), the fifth guide pipe (25) is installed in the fifth sliding groove (15), and the pull cable (40) passes through the guide pipe to be connected with the driving member (60).

6. A sole as claimed in claim 5, characterised in that ​ 7. A sole as claimed in claim 6, characterised in that The second conduit (22) is provided with a protruding first conduit hole (221), the front end of the first conduit (21) is sleeved outside the first conduit hole (221) and fixed therewith; the third conduit (23) is provided with a protruding second conduit hole (231), the rear end of the first conduit (21) is sleeved outside the second conduit hole (231) and fixed therewith.

8. A sole as claimed in claim 7, characterised in that The arch part (2) of the midsole body (10) is provided with an inlet conduit (26) and an outlet conduit (27), the inlet conduit (26) connects the fourth conduit (24) and the driving member (60), and the outlet conduit (27) connects the fifth conduit (25) and the driving member (60).

9. A sole as claimed in claim 8, characterised in that The first sliding groove (11) is a plurality of, the first sliding groove (11) is arranged along the left-right direction, and is respectively communicated with the second sliding groove (12) and the third sliding groove (13), and each first sliding groove (11) is provided with the first conduit (21), the sliding member (31) and the cable (40).

10. A shoe characterized by The shoe sole is used for the shoe sole of any one of claims 1-9.

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