A type of shoe that is easy to adjust in height.

Abstract

This utility model discloses a shoe with convenient height adjustment. The adjustable sole can be flipped back and forth based on the supporting sole. By changing the angle between the adjustable sole and the supporting sole, the heel height can be adjusted, supporting the heel of the foot at different heights. Support columns and pawls are respectively set on the supporting sole and the adjustable sole. The support column engages with the teeth on the pawl to form a ratchet mechanism. When worn, the entire height adjustment process does not require standing on one leg. Adjusting to decrease the height is relatively simple, and adjusting to increase the height does not even require using hands. This effectively solves the problem of inconvenient heel height adjustment in current shoes, reducing the operational difficulty of height adjustment and improving the practicality and safety of this convenient height-adjustable shoe.

Description

Technical Field

[0001] This utility model belongs to the technical field of height adjustment in footwear, specifically relating to a shoe that is easy to adjust in height. Background Technology

[0002] In daily life, to adapt to different walking scenarios, occasions, and outfits, people not only have requirements for the type and appearance of shoes, but also for the height of the heels. However, since the heel height of regular shoes is fixed, when needs change, the only way to change the heel height is to change the shoes. This means that women who value comfort and style often need to bring extra shoes when going out. For example, when driving to a banquet, they need to wear flat shoes for safety while driving, but high heels are required to meet etiquette and style requirements when entering the banquet, which makes travel quite inconvenient.

[0003] Currently, some height-adjustable shoe designs exist, but their effectiveness and practicality are not ideal. To better meet the height requirements of shoes in various wearing scenarios, the applicant has designed a shoe with an adjustable heel height and a reliable structure. For details, please refer to Chinese Patent CN118680361A, "Shoe with Adjustable Heel Height." This patented design features an adjustable sole that can flip forward and backward based on the supporting sole. By changing the angle between the adjustable sole and the supporting sole, the heel height can be adjusted, supporting the heel at different heights. A sliding assembly between the adjustable sole and the supporting sole is provided for supporting and locking the angle, allowing the shoe to meet the needs of various wearing scenarios. There is a need for adjusting the heel height; however, when adjusting the height, the shoe needs to be lifted off the ground first to release the interaction between the adjusting sole and the supporting sole. Then, the index finger and thumb of one hand press the buttons on both sides of the sliding assembly to adjust the locking structure to the unlocked state that releases the restriction on sliding. At the same time, the heel height is adjusted by moving the sliding assembly back and forth. This means that adjusting the height requires the user to squeeze the sliding assembly firmly and move it back and forth. When wearing the shoe, the user may also need to stand on one foot and adjust the foot posture to match the change in heel height. Not only is the height adjustment inconvenient, but it is also easy to fall. Therefore, it is necessary to design a shoe with adjustable height that is more convenient to use. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a shoe with convenient height adjustment, solve the technical problem of inconvenient heel height adjustment of current shoes, and achieve the effect of reducing the difficulty of using height-adjustable shoes and improving practicality.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A height-adjustable shoe includes a sole comprising a support sole and an adjustable sole. The adjustable sole is located above the support sole, and its front end is rotatably connected to the support sole via a first pivot axis positioned along the width of the shoe. An adjustment assembly is located behind the first pivot axis between the adjustable sole and the support sole. The adjustment assembly includes a support post, a pawl, and an elastic element. The support post is vertically fixed to the support sole, and multiple vertically distributed toothed grooves are located on one side of the support post. The pawl is close to the support post and located on the side where the toothed grooves are located. The pawl has locking teeth that match the toothed grooves. The pawl is positioned laterally... The second rotating shaft is rotatably connected to the adjusting base. The rotation of the pawl can cause the locking teeth to fall into and out of the tooth groove. When the locking teeth fall into the tooth groove, it is a locked state that restricts the rotation and descent of the adjusting base. When the locking teeth are out of the tooth groove, it is an unlocked state in which the adjusting base can rotate freely. When the locking teeth fall into the lowest tooth groove, there is a certain vertical distance between the rear end of the support base and the adjusting base. The elastic element is connected to the adjusting base and the pawl respectively. The elastic force of the elastic element makes the pawl maintain the rotational tendency of the locking teeth to move towards the support column. The adjusting base or the support base is provided with an unlocking structure for driving the pawl to rotate and causing the locking teeth to disengage from the tooth groove.

[0007] Furthermore, a clearance groove is provided on the lower surface of the adjusting base, and the upper end of the support column can move in and out of the clearance groove as the adjusting base rotates. When the locking teeth fall into the lowest tooth groove, the upper end of the support column is located in the clearance groove.

[0008] Furthermore, the rear side of the support column is an arc surface concentric with the first rotating shaft, and the plurality of toothed grooves are located on the arc surface and are distributed in an arc shape accordingly.

[0009] Furthermore, the support column is curved vertically and concentric with the first pivot. The lower surface of the adjusting base protrudes in front of the relief groove to form a guide plate. The rear side of the guide plate is smoothly connected to the front wall of the relief groove and forms an arc-shaped guide surface that slides with the front side of the support column. When the locking tooth falls into the uppermost tooth groove, the upper end of the support column is higher than the lower end of the guide plate. The two ends of the guide plate extend backward in the shoe width direction to form side baffles. In the shoe width direction, the support column is located between the two side baffles and slides with them.

[0010] Furthermore, the middle part of the pawl is rotatably connected to the adjusting bottom via a second pivot. The lower end of the pawl forms a locking tooth, and the upper end is located in the relief groove. A sliding channel is provided in the adjusting bottom along the length of the shoe. The front end of the sliding channel extends to communicate with the relief groove, and the rear end extends to the rear end face of the adjusting bottom. A push rod is slidably provided in the sliding channel. The length of the push rod is greater than the length of the sliding channel. When the push rod slides forward, it can push the upper end of the pawl to rotate forward and disengage the locking tooth from the tooth groove. The push rod and the sliding channel form the unlocking structure.

[0011] Furthermore, the adjusting base has a mounting groove that communicates with the sliding channel. The elastic element is a spring, which is located in the mounting groove and sleeved on the push rod. The two ends of the spring are respectively connected to the push rod and the adjusting base. The upper end of the pawl has a vertically extending waist-shaped hole that runs through the width of the shoe. A transmission rod that matches the width of the waist-shaped hole is movably installed in the waist-shaped hole. The front end of the push rod is fixedly connected to the transmission rod. The elastic force of the spring acts on the pawl through the push rod and the transmission rod.

[0012] Furthermore, the rear end face of the adjustable sole is provided with a pressing groove, which is connected to the sliding channel along the length of the shoe. The rear end of the push rod is connected to a pressing head that matches the pressing groove. The pressing head is located in the pressing groove and slides in cooperation. When the pressing head slides forward to abut against the bottom surface of the pressing groove, it is in the unlocked state.

[0013] Furthermore, a limiting groove is provided on the rear wall of the clearance groove. The limiting groove is connected to the sliding channel along the length of the shoe. The front end of the push rod is connected to a limiting head. The rear end of the limiting head is located in the limiting groove and slides in fit. The front end of the limiting head is connected to the transmission rod. When the limiting head slides backward to abut against the bottom surface of the limiting groove, it is locked in a corresponding state.

[0014] Furthermore, an elastic adjustment plate is provided on the support base in front of the adjustment base. The thickness direction of the elastic adjustment plate is the same as that of the support base. Either the front or rear end of the elastic adjustment plate is fixed at the position of the support base and serves as the fixed end, while the other end serves as the movable end. An adjustment mechanism is connected between the movable end and the front end of the adjustment base. When the adjustment base rotates and rises, the adjustment mechanism can drive the movable end to move toward the fixed end, causing the elastic adjustment plate to undergo elastic deformation and arch upward.

[0015] Furthermore, a receiving groove is provided on the support base in front of the adjusting base. Limiting holes are respectively provided on the front and rear side walls of the receiving groove. The elastic adjusting plate is movably disposed in the receiving groove. The front and rear ends of the elastic adjusting plate respectively protrude to form limiting protrusions corresponding to the limiting holes. The limiting protrusions are located in the corresponding limiting holes and slide in fit. A traction channel extending to the front end of the adjusting base is provided on the rear side wall of the receiving groove. A cable is slidably disposed in the traction channel. The front end of the elastic adjusting plate serves as the movable end and is connected to the front end of the cable. The rear end of the cable is connected to the front end of the adjusting base. When the adjusting base rotates and rises, the cable moves backward and pulls the movable end toward the fixed end. The cable and the traction channel form the adjusting mechanism.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The height-adjustable shoe of this utility model features an adjustable sole that can be flipped back and forth based on the supporting sole. By changing the angle between the adjustable sole and the supporting sole, the heel height can be adjusted, supporting the heel of the foot at different heights. Support columns and pawls are respectively set on the supporting sole and the adjustable sole. The support column and the pawl engage with the teeth on the pawl to form a ratchet mechanism. When worn, the entire height adjustment process does not require standing on one foot. Adjusting to decrease the height is relatively simple, and adjusting to increase the height does not even require using hands. This effectively solves the problem of inconvenient heel height adjustment in current shoes, helps to reduce the difficulty of height adjustment operation, and improves the practicality and safety of the height-adjustable shoe.

[0018] 2. The height-adjustable shoe of this utility model has a relief groove on the lower surface of the adjustable sole to accommodate the upper end of the support column. When the minimum height of the adjustable sole is the same, compared to the adjustable sole abutting against the upper end of the support column at the minimum height, a higher support column can be set, allowing more teeth to be set on the support column to obtain a larger height adjustment range. In addition, during the height adjustment process, since the pawl rotates with the adjustable sole, the movement trajectory of the locking teeth is arc-shaped. The support column is designed to bend vertically into an arc shape and be concentric with the first rotation axis, so that the distribution of the teeth is adapted to the movement trajectory of the locking teeth, which helps to ensure the stability of the engagement between the locking teeth and each tooth groove, and improves the reliability of height adjustment.

[0019] 3. The height-adjustable shoe of this utility model has a sliding channel in the adjustable sole, and a push rod in the sliding channel as an unlocking structure. This not only avoids exposing the unlocking structure, but also makes the unlocking operation simple and easy. In addition, using a spring as an elastic element and placing it behind the clearance groove avoids occupying the clearance groove space. Placing the spring in the mounting groove that is vertically connected to the sliding channel and sleeved on the push rod not only makes it easy to limit the position and deformation direction of the spring, allowing the spring to perform its corresponding function smoothly, but also allows the spring and the push rod to share part of the mounting space, which helps to improve the compactness of the overall structure. Attached Figure Description

[0020] Figure 1 This is a perspective view of the shoe with adjustable height as described in the embodiment, at its minimum height.

[0021] Figure 2 This is a top view of the shoe, as described in the embodiment, at its minimum height, which allows for easy height adjustment.

[0022] Figure 3 for Figure 2 A schematic diagram of the cross-section along the middle AA;

[0023] Figure 4 for Figure 3 A diagram of the front half of the shoe;

[0024] Figure 5 This is a perspective view of the shoe, as described in the embodiment, at its maximum height.

[0025] Figure 6 This is a top view of the shoe, as described in the embodiment, at its maximum height;

[0026] Figure 7 for Figure 6 A schematic diagram of the cross-section along the middle edge BB;

[0027] Figure 8 for Figure 7 A diagram of the front half of the shoe;

[0028] Figure 9 This is a schematic diagram of the shoe, as described in the embodiment, in a locked state;

[0029] Figure 10 This is a schematic diagram of the height-adjustable shoe in the unlocked state, as described in the embodiment.

[0030] Figure 11 This is an exploded view of the support base and related components described in the embodiment;

[0031] Figure 12 This is an exploded view of the adjustable base and related components described in the embodiment;

[0032] Figure 13 This is a perspective view of the inner bottom as described in the embodiment;

[0033] Figure 14 This is a perspective view of the first rotating shaft in the embodiment;

[0034] Figure 15 This is a perspective view of the foot strap and ankle strap described in the embodiment;

[0035] The components include: a support base 1, an adjusting base 2, a first rotating shaft 3, a support column 4, a pawl 5, a toothed groove 6, a locking tooth 7, a second rotating shaft 8, an elastic element 9, a front support base 10, a rear support base 11, a first support pad 12, a rotating connection part 13, a first shaft hole 14, a connection notch 15, a rotating lug 16, a screw 17, a second support pad 18, a third support pad 19, a guide surface 20, a stop surface 21, a clearance groove 22, a guide plate 23, a side baffle 24, a dovetail groove 25, a rib 26, a sliding channel 27, a push rod 28, a mounting part 29, a mounting groove 30, a spring 31, and a waist-shaped hole 32. 33. Transmission rod, 34. Slot, 35. Elastic retaining ring, 36. Pressing groove, 37. Pressing head, 38. Limiting groove, 39. Second shaft hole, 40. Third shaft hole, 41. Relief notch, 42. Fourth shaft hole, 43. First pin hole, 44. Second pin hole, 45. Pin, 46. Elastic adjusting plate, 47. Receiving groove, 48. Limiting hole, 49. Limiting protrusion, 50. Slide groove, 51. Slide column, 52. Traction channel, 53. Cable, 54. Traction part, 55. Threaded hole, 56. Threaded pressure column, 57. Insole, 58. Foot strap, 59. Ankle strap, 60. Front connecting groove, 61. Rear connecting groove, 62. Recess, 63. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0037] Example:

[0038] To adapt to different walking scenarios, occasions, and outfits, people have various needs regarding the height of shoe heels. Since the height of regular shoe heels is fixed, when needs change, the only way to change the height is to change the shoes. This may require carrying several pairs of shoes when going out, which makes travel inconvenient. Therefore, this utility model provides a shoe with a convenient adjustable heel height.

[0039] Please see Figure 1 and Figure 5 The shoe with adjustable height includes a sole, which comprises a support sole 1 and an adjustable sole 2. The adjustable sole 2 is located above the support sole 1, and its front end is rotatably connected to the support sole 1 via a first pivot 3 set along the width direction of the shoe. (See also...) Figure 3 and Figure 7An adjustment assembly is provided between the adjusting base 2 and the supporting base 1, behind the first rotating shaft 3. The adjustment assembly includes a support column 4, a pawl 5, and an elastic element 9. The support column 4 is vertically fixed on the supporting base 1. Multiple toothed grooves 6 are vertically distributed on one side of the support column 4. The pawl 5 is close to the support column 4 and located on the side where the toothed grooves 6 are located. The pawl 5 has locking teeth 7 that match the toothed grooves 6. The pawl 5 is rotatably connected to the adjusting base 2 via a horizontally arranged second rotating shaft 8. Rotation of the pawl 5 allows the locking teeth 7 to fall into and disengage from the toothed grooves 6. When the locking tooth 7 falls into the tooth groove 6, it is in a locked state that restricts the rotation and descent of the adjusting base 2. When the locking tooth 7 disengages from the tooth groove 6, it is in an unlocked state that allows the adjusting base 2 to rotate freely. When the locking tooth 7 falls into the lowest tooth groove 6, there is a certain vertical distance between the rear end of the supporting base 1 and the adjusting base 2. The elastic element 9 is connected to the adjusting base 2 and the pawl 5 respectively. The elastic force of the elastic element 9 keeps the pawl 5 in a rotational tendency to move the locking tooth 7 toward the supporting column 4. The adjusting base 2 or the supporting base 1 is provided with an unlocking structure for driving the pawl 5 to rotate and disengaging the locking tooth 7 from the tooth groove 6.

[0040] In implementation, the adjustable base 2 can be rotatably connected to the front end of the support base 1, with the adjustable base 2 supporting the foot; alternatively, the adjustable base 2 can be rotatably connected to the middle of the support base 1, with the front half of the support base 1 supporting the forefoot and the adjustable base 2 supporting the heel. In this embodiment, the adjustable base 2 is rotatably connected to the middle of the support base 1, which is compatible with the structure of the human foot, allowing the adjustable base 2 to still provide relatively stable and comfortable support for the foot after adjusting its height. Specifically, as shown... Figure 11 and Figure 12 As shown, the support sole 1 is divided into a support forefoot 10 and a support for rearfoot 11. A first support pad 12 is connected below the support forefoot 10. The rear end of the support forefoot 10 bends upward to form a rotating connection part 13. A first shaft hole 14 is provided through the rotating connection part 13 along the width of the shoe. Multiple connecting notches 15 are provided on the rotating connection part 13. The front end of the adjusting sole 2 protrudes to form multiple rotating lugs 16 spaced apart along the width of the shoe. The rotating lugs 16 fall into the connecting notches 15 one by one, so that... Figure 14 The first rotating shaft 3 shown passes through the first shaft hole 14 and each rotating support lug 16, so that the adjusting base 2 is rotatably connected to the supporting base 1. The supporting rear base 11 is connected behind the supporting front base 10, and the front end of the supporting rear base 11 is lower than the rotating connection part 13. A screw 17 is provided through the middle of the supporting rear base 11. The shank of the screw 17 is located above the supporting base 1 and is fixedly connected to the supporting column 4. The head of the screw 17 is located below the supporting base 1 and is connected to the second supporting pad 18. The rear end of the supporting rear base 11 is connected to the third supporting pad 19.

[0041] Understandably, such as Figure 10As shown, on the rear side of the support column 4, a ratchet is formed between adjacent tooth grooves 6. The ratchet includes a guide surface 20 and a stop surface 21. The guide surface 20 is an inclined surface that serves as a guide, and the stop surface 21 is a steep surface that serves to initiate and stop the action. The support column 4 forms a ratchet mechanism by engaging with the locking teeth 7 on the pawl 5 through the tooth grooves 6. In this embodiment, the guide surface 20 of the ratchet faces downward and the stop surface 21 faces upward. Please refer to [link to previous text]. Figure 9 When the locking tooth 7 is in the tooth groove 6, the locking tooth 7 abuts against the stop surface 21 in the vertical direction, preventing the support column 4 and the pawl 5 from moving towards each other, thereby restricting the adjustment base 2 from rotating and descending. The support column 4 supports the adjustment base 2 through the pawl 5, so that the support base 1 maintains its current height. When the adjustment base 2 is lifted with the help of external force, the locking tooth 7 can swing and disengage under the guidance of the guide surface 20, so that the adjustment base 2 can rotate and rise. The elastic force of the elastic element 9 keeps the pawl 5 in a rotational tendency to move the locking tooth 7 toward the support column 4, ensuring that the locking tooth 7 and the tooth groove 6 are stably engaged. When the adjustment base 2 is lifted with the help of external force, the elastic force of the elastic element 9 needs to be overcome.

[0042] The shoe with adjustable height described in this utility model features an adjustable sole 2 that can be flipped back and forth based on the supporting sole 1. By changing the angle between the adjustable sole 2 and the supporting sole 1, the heel height can be adjusted, supporting the heel of the foot at different heights. An adjustment assembly, distinct from the sliding assembly in previous designs, is designed between the adjustable sole 2 and the supporting sole 1. In this adjustment assembly, a support column 4 and a pawl 5 are respectively mounted on the supporting sole 1 and the adjustable sole 2. The support column 4 engages with the locking teeth 7 on the pawl 5 via a toothed groove 6 to form a ratchet mechanism. When worn, the front end of one shoe can be directly inserted between the rear end of the supporting sole 1 and the adjustable sole 2 of the other shoe through the aforementioned vertical spacing, pressing down the supporting sole 1 to keep the support column 4 stationary. This lifts the heel of the other shoe, allowing the adjusting sole 2 to be raised using the heel counter or ankle strap 60, increasing the heel height. The shoe can then be unlocked by squatting down, disengaging the locking teeth 7 from the toothed groove 6, resulting in a... Figure 10 The shoe is in the unlocked state shown. Then, press down with your heel to adjust the bottom 2 to reduce the heel height of the shoe. The entire adjustment process does not require standing on one foot. Adjusting to reduce the height is relatively simple, and adjusting to increase the height does not even require using your hands. This can effectively solve the problem of inconvenient adjustment of the heel height of current shoes, and is conducive to reducing the difficulty of height adjustment operation and improving the practicality and safety of the shoes with convenient height adjustment.

[0043] Please see Figure 1 , Figure 2 and Figure 3The lower surface of the adjusting base 2 is provided with a clearance groove 22. The upper end of the support column 4 can rotate with the adjusting base 2 to enter and exit the clearance groove 22. When the locking tooth 7 falls into the lowest tooth groove 6, the upper end of the support column 4 is located in the clearance groove 22. In this way, when the lowest height of the adjusting base 2 is the same, compared with the adjusting base 2 abutting against the upper end of the support column 4 at the lowest height, the clearance groove 22 on the lower surface of the adjusting base 2 is used to accommodate the upper end of the support column 4, which allows for the setting of a higher support column 4, so that more tooth grooves 6 can be set on the support column 4 to obtain a larger height adjustment range.

[0044] Please see Figure 9 and Figure 10 The rear side of the support column 4 is an arc surface concentric with the first rotating shaft 3, and the multiple tooth grooves 6 are located on the arc surface and are distributed in an arc shape. In this way, the pawl 5 is correspondingly set on the rear side of the support column 4, which has a larger arrangement space and movement space than the front side, which helps to avoid interference between the pawl 5 and the adjusting base 2 and the support base 1. During the height adjustment process, since the pawl 5 rotates with the adjusting base 2, the movement trajectory of the locking tooth 7 is arc-shaped. Designing the rear side of the support column 4 as an arc surface and opening the tooth grooves 6 on the rear side of the support column 4 makes the distribution of the tooth grooves 6 match the movement trajectory of the locking tooth 7, which helps to ensure the stability of the engagement between the locking tooth 7 and each tooth groove 6 and improves the reliability of height adjustment.

[0045] Please see Figure 10 and Figure 12 The support column 4 is curved vertically and concentric with the first rotating shaft 3. The lower surface of the adjusting base 2 protrudes in front of the relief groove 22 to form a guide plate 23. The rear side of the guide plate 23 is smoothly connected to the front wall of the relief groove 22 and forms an arc-shaped guide surface that slides with the front side of the support column 4. When the locking tooth 7 falls into the uppermost tooth groove 6, the upper end of the support column 4 is higher than the lower end of the guide plate 23. The two ends of the guide plate 23 extend backward in the shoe width direction to form side baffles 24. In the shoe width direction, the support column 4 is located between the two side baffles 24 and slides with them. In this way, based on the arc-shaped rear side of the support column 4, the support column 4 is further designed as an arc shape. The position of the adjusting base 2 relative to the upper end of the support column 4 remains unchanged during the rotation. The relief groove 22 is located in this relative position, which helps to reduce the size of the relief groove 22 and reduce the impact of the relief groove 22 on the structural strength of the adjusting base 2.

[0046] In addition, such as Figure 5 and 12As shown, a guide plate 23 is provided on the lower surface of the adjusting sole 2, forming an arc-shaped guide surface with the front wall of the relief groove 22. During height adjustment, the front side of the support column 4 always slides in contact with the arc-shaped guide surface, and the rear side of the support column 4 abuts against the locking teeth 7 on the pawl 5 through the tooth groove 6, thereby restricting the relative movement of the adjusting sole 2 and the support column 4 in the shoe length direction. At the same time, the guide plate 23 extends to form a side baffle 24, and the two sides of the support column 4 slide in contact with the two side baffles 24 respectively in the shoe width direction, thereby restricting the relative movement of the adjusting sole 2 and the support column 4 in the shoe width direction. This helps to ensure the stable functioning of the adjusting assembly and improves the structural reliability and practicality of the shoe with convenient height adjustment. In this embodiment, a vertical through-hole dovetail groove 25 is also provided on the arc-shaped guide surface, and the front side of the support column 4 has a rib 26 that matches the shape of the dovetail groove 25. The rib 26 is located in the dovetail groove 25 and slides in contact with it, which helps to further ensure the stability of the cooperation between the support column 4 and the adjusting sole 2.

[0047] In practice, the unlocking structure can take various forms. For example, a lever can be set directly on the side of the pawl 5. When in use, the pawl 5 can be moved by the lever to disengage the locking tooth 7 from the tooth groove 6. Alternatively, a pull rope can be set behind the pawl 5. When in use, the pawl 5 can be pulled by the pull rope to disengage the locking tooth 7 from the tooth groove 6.

[0048] Please see Figure 9 and Figure 10 In this embodiment, the pawl 5 is rotatably connected to the adjusting sole 2 via a second pivot 8. The lower end of the pawl 5 forms a locking tooth 7, and the upper end is located within the relief groove 22. A sliding channel 27 is provided within the adjusting sole 2 along the length of the shoe. The front end of the sliding channel 27 extends to communicate with the relief groove 22, and the rear end extends to the rear end face of the adjusting sole 2. A push rod 28 is slidably provided within the sliding channel 27. The length of the push rod 28 is greater than the length of the sliding channel 27. Sliding the push rod 28 forward can push the upper end of the pawl 5 to rotate forward and disengage the locking tooth 7 from the tooth groove 6. The push rod 28 and the sliding channel 27 form the unlocking structure. Thus, the unlocking structure is located at the rear end of the adjusting sole 2. When it is necessary to unlock and lower the adjusting sole 2, the rear end of the push rod 28 can be pressed directly to slide the push rod 28 forward and push the upper end of the pawl 5 to rotate forward, thereby disengaging the locking tooth 7 from the tooth groove 6 and completing the unlocking. The unlocking operation is simple and easy, which helps to reduce the difficulty of using the shoe with adjustable height and improves its practicality. In addition, as Figure 5 , Figure 9 and Figure 12As shown, in this embodiment, the lower surface of the adjusting base 2 also has two mounting parts 29 protruding. The two mounting parts 29 are located behind the side baffle 24 and are respectively located on both sides of the pawl 5 in the shoe width direction. The second rotating shaft 8 is connected between the two mounting parts 29. In this way, it is convenient to reasonably arrange the pawl 5 when the thickness of the adjusting base 2 is limited, so as to ensure the normal operation of the pawl 5 and avoid interference.

[0049] Based on the above structure, it is conceivable to place the elastic element 9 within the relief groove 22 and abut it against the front side wall of the relief groove 22 and the upper end of the pawl 5. However, this would undoubtedly occupy the space of the relief groove 22, affecting the relief groove 22's ability to accommodate the support column 4, and consequently affecting the range of height adjustment. To avoid this problem, please refer to [reference needed]. Figure 9 , Figure 10 and Figure 12 This invention features an installation groove 30 on the adjusting base 2 that communicates with the sliding channel 27. The elastic element 9 is a spring 31, located within the installation groove 30 and fitted onto the push rod 28. Both ends of the spring 31 are kinetically connected to the push rod 28 and the adjusting base 2, respectively. A vertically extending waist-shaped hole 32 extends through the upper end of the pawl 5 along the shoe width direction. A transmission rod 33, adapted to the width of the waist-shaped hole 32, is movably installed within the waist-shaped hole 32. The front end of the push rod 28 is connected to the transmission rod 33. The elastic force of the spring 31 acts on the pawl 5 through the push rod 28 and the transmission rod 33. By using the spring 31 as the elastic element 9 and placing it behind the clearance groove 22, the space occupied by the clearance groove 22 can be avoided. Placing the spring 31 in the installation groove 30, which vertically communicates with the sliding channel 27, and fitting it onto the push rod 28, not only facilitates limiting the position and deformation direction of the spring 31, allowing it to function smoothly, but also ensures that the spring 31 and the push rod 28... Sharing a common installation space helps improve the overall structural compactness. Furthermore, since the spring force of spring 31 acts on pawl 5 through push rod 28, push rod 28 needs to push the upper end of pawl 5 forward to unlock and pull it backward to lock. Because the upper end of pawl 5 rotates during unlocking and locking, the position where the upper end of pawl 5 abuts against the front end of push rod 28 changes. If the front end of push rod 28 is directly fixed to the upper end of pawl 5, unlocking and locking operations are difficult to complete. Therefore, this invention provides a waist-shaped hole 32 extending along the shoe width direction at the upper end of pawl 5, and a transmission rod 33 is movably installed in the waist-shaped hole 32. Push rod 28 is connected to the upper end of pawl 5 through the transmission rod 33. When push rod 28 moves backward, transmission rod 33 moves synchronously back and forth. Transmission rod 33 guides the upper end of pawl 5 to rotate back and forth through cooperation with the waist-shaped hole 32, thereby achieving unlocking and locking operations.

[0050] Please see Figure 10 and Figure 12In this embodiment, the push rod 28 is provided with a groove 34. The push rod 28 is fixedly fitted with an elastic retaining ring 35 through the groove 34. The front end of the spring 31 abuts against the front side wall of the mounting groove 30, and the rear end of the spring 31 abuts against the elastic retaining ring 35. The spring 31 is always in a compressed state, so that the push rod 28 maintains a tendency to slide backward. The front end of the push rod 28 abuts against the inner wall of the waist-shaped hole 32 through the transmission rod 33 to transmit the elastic force, so that the upper end of the pawl 5 maintains a tendency to rotate backward. Correspondingly, the retaining tooth 7 at the lower end of the pawl 5 maintains a tendency to rotate forward. When the push rod 28 is not subjected to external force, the retaining tooth 7 is kept in contact with the tooth groove 6, thereby ensuring the stability of the locked state.

[0051] Please see Figure 9 and Figure 10 The rear end face of the adjustable sole 2 is provided with a pressing groove 36, which is connected to the sliding channel 27 along the length of the shoe. The rear end of the push rod 28 is connected to a pressing head 37 that matches the pressing groove 36. The pressing head 37 is located in the pressing groove 36 and slides in cooperation. When the pressing head 37 slides forward and abuts against the bottom surface of the pressing groove 36, it corresponds to the unlocked state. In this way, the rear end of the push rod 28 protrudes from the rear end of the adjustable sole 2 through the pressing head 37. The cross-sectional size of the pressing head 37 is larger than that of the push rod 28, which not only helps to increase the area for pressing and unlocking and improve the pressing feel, but also provides feedback that the pressing is in place when the pressing head 37 slides forward and abuts against the bottom surface of the pressing groove 36, which is conducive to improving practicality.

[0052] Please see Figure 9 and Figure 10 A limiting groove 38 is provided on the rear wall of the clearance groove 22. The limiting groove 38 is connected to the sliding channel 27 along the length of the shoe. The front end of the push rod 28 is connected to the limiting head 39. The rear end of the limiting head 39 is located in the limiting groove 38 and slides in fit. The front end of the limiting head 39 is connected to the transmission rod 33. That is, the front end of the push rod 28 is connected to the transmission rod 33 through the limiting head 39. When the limiting head 39 slides backward to abut against the bottom surface of the limiting groove 38, it corresponds to the locked state. In this way, by connecting the pressing head 37 and the limiting head 39 to both ends of the push rod 28, the push rod 28 can be restricted within the sliding channel 27. This not only prevents the push rod 28 from accidentally coming out, but also makes it easy to adjust the position of the push rod 28 that is abutted and limited by the pressing head 37 and the limiting head 39 during manufacturing and assembly. This ensures that the effective stroke of the push rod 28 can meet the requirements of the pawl 5 to rotate back and forth to complete the unlocking and locking.

[0053] Please see Figure 12To facilitate assembly, a clearance groove 22 is designed to vertically penetrate the adjusting base 2, and the opening of the mounting groove 30 faces upward. Two mounting parts 29 have second shaft holes 40 penetrating along the shoe width direction. The pawl 5 has a third shaft hole 41 penetrating along the shoe width direction in its middle. The upper end of the pawl 5 has a clearance notch 42 communicating with the waist-shaped hole 32. The front end of the limiting head 39 has a fourth shaft hole 43 penetrating along the shoe width direction. The rear end face of the limiting head 39 has a receiving hole. A first pin hole 44 is vertically penetrating the limiting head 39. The front end of the push rod 28 has a second pin hole 45 vertically penetrating. During assembly, first insert the limiting head 39 into the clearance notch 42, and then pass the transmission rod 33 through the waist-shaped hole 32 and the fourth shaft hole 43. Then, place the pawl 5 into the clearance groove 22. In the middle, the second rotating shaft 8 passes through the second shaft hole 40 and the third shaft hole 41, so that the pawl 5 is rotatably connected to the adjusting base 2. Then, the spring 31 is horizontally placed in the mounting groove 30. The pressing head 37 is connected and fixed to the rear end of the push rod 28. The front end of the push rod 28 is inserted into the sliding channel 27, and the front end of the push rod 28 extends through the spring 31 into the relief groove 22. The posture of the pawl 5 and the limiting head 39 is adjusted so that the front end of the push rod 28 is inserted into the receiving hole. Then, the pin 46 passes through the first pin hole 44 and the second pin hole 45 to connect the front end of the push rod 28 with the limiting head 39. Finally, the pressing head 37 is pushed to move the push rod 28 forward, so that the slot 34 is exposed in the mounting groove 30. The elastic retaining ring 35 is inserted into the slot 34 and abuts against the rear end of the spring 31.

[0054] In the prior art design described in the background, an elastic adjustment plate is provided on the support base in front of the adjustment base. The elastic adjustment plate is connected to the front end of the adjustment base through an adjustment mechanism. As the adjustment base rotates and rises, the elastic adjustment plate gradually arches up. As the adjustment base rotates and falls, the elastic adjustment plate gradually relaxes and the arch height gradually decreases. Throughout the adjustment process, the arch height of the elastic adjustment plate dynamically changes and matches the tilt angle of the adjustment base in real time, always providing a suitable support effect for the forefoot, thereby preventing the foot from shifting forward. In the prior art design, the adjustment mechanism transmits power through a pull rod. To avoid the pull rod sliding due to deformation of the support base and to ensure smooth operation of related components, a base plate is also provided on the support base. The base plate forms a mounting groove for the pull rod to slide back and forth. Understandably, the base plate and pull rod must have strong rigidity, but this will undoubtedly affect the overall flexibility of the support base, thereby affecting the wearing comfort.

[0055] Please see Figure 6 , Figure 7 and Figure 11Similarly, to achieve front-to-back linkage and prevent the foot from moving forward after the adjustable base 2 is raised, this utility model also provides an elastic adjustment piece 47 on the support base 1. The elastic adjustment piece 47 and the support base 1 are in the same thickness direction. Either the front or rear end of the elastic adjustment piece 47 is fixed at the position of the support base 1 and serves as the fixed end, while the other end serves as the movable end. An adjustment mechanism is connected between the movable end and the front end of the adjustable base 2. When the adjustable base 2 is rotated and raised, the adjustment mechanism can drive the movable end to move toward the fixed end, causing the elastic adjustment piece 47 to undergo elastic deformation and arch upward. Specifically, a receiving groove 48 is provided on the support base 1 in front of the adjustable base 2. Limiting holes 49 are respectively provided on the front and rear side walls of the receiving groove 48. The elastic adjustment piece 47 is movably disposed in the receiving groove 48. The front and rear ends of the elastic adjustment piece 47 respectively protrude to form limiting protrusions 50 corresponding to the limiting holes 49. The limiting protrusions 50 are located in the corresponding limiting holes 49 and slide in cooperation.

[0056] like Figure 11 and Figure 8 As shown, the difference is that a sliding groove 51 extending along the length of the shoe is provided on the bottom surface of the receiving groove 48, and a sliding column 52 is provided in the sliding groove 51. The lower end of the sliding column 52 is slidably engaged with the sliding groove 51. A positioning hole adapted to the sliding column 52 is provided on the lower surface of the elastic adjusting piece 47 near its front end. The upper end of the sliding column 52 is located in the positioning hole. A traction channel 53 extending to the front end of the adjusting base 2 is provided on the rear side wall of the receiving groove 48. A cable 54 is slidably provided in the traction channel 53. The front end of the elastic adjusting piece 47 serves as the movable end. The front end of the cable 54 is sleeved on the sliding column 52. The rear end of the cable 54 is connected to the front end of the adjusting base 2. When the adjusting base 2 rotates and rises, the cable 54 moves backward and pulls the movable end toward the fixed end. The cable 54 and the traction channel 53 form the adjusting mechanism.

[0057] like Figure 12 As shown, in this embodiment, the front end of the adjusting base 2 also protrudes between the rotating support ears 16 to form a traction part 55. During assembly, the traction part 55 is also located in the connecting notch 15. The rear end of the traction channel 53 is connected to the connecting notch 15. A traction hole is provided on the front end face of the traction part 55 to accommodate the rear end of the cable 54. The traction part 55 is also provided with a threaded hole 56 that communicates with the traction hole. A threaded pressure post 57 is threadedly connected to the threaded hole 56. After the rear end of the cable 54 is passed into the traction hole, the threaded pressure post 57 can be tightened to press and fix the rear end of the cable 54 in the traction hole.

[0058] like Figure 3 and Figure 4 As shown, when the adjusting base 2 is in the low position, the traction part 55 is in a higher position, the cable 54 is in a relaxed state, and correspondingly, the elastic adjusting piece 47 is also in a relaxed state with a lower arch height, such as... Figure 7 and Figure 5As shown, when the adjusting sole 2 rotates and rises, the traction part 55 rotates and falls accordingly, causing the rear end of the cable 54 to move backward. The cable 54 is in a taut state and pulls the front end of the elastic adjusting piece 47 towards the rear end through the sliding column 52, causing the elastic adjusting piece 47 to gradually arch. When the adjusting sole 2 rotates and falls, the traction part 55 rises again and relaxes the cable 54, causing the elastic adjusting piece 47 to relax under its own elastic force. Throughout the adjustment process, the arch height of the elastic adjusting piece 47 changes dynamically and matches the tilt angle of the adjusting sole 2 in real time, always providing a suitable support effect for the forefoot, thereby preventing the foot from shifting forward. In this invention, the adjusting sole 2 transmits traction force to the elastic adjusting piece 47 through the cable 54. Since the cable 54 is flexible, it does not affect the overall flexibility of the support body and will not affect the wearing comfort, which is beneficial to improving the practicality of the shoe with convenient height adjustment.

[0059] To facilitate a better understanding of this utility model, based on the structural composition of a conventional shoe sole, the height-adjustable shoe described in this utility model is explained as follows: A conventional shoe sole generally consists of an outsole, a midsole, and an insole 58, which are sequentially connected from bottom to top. The outsole is in contact with the ground and is relatively hard, possessing good wear resistance. The midsole is slightly softer and primarily serves to maintain the shape of the sole and provide shock absorption. The insole 58 is in contact with the foot and typically uses softer materials such as rubber, sponge, and fabric to improve wearing comfort. Figure 1 and Figure 5 As shown, in this embodiment, the supporting sole 1 and the adjusting sole 2 together serve as the midsole of the shoe sole, and the first supporting pad 12, the second supporting pad 18, and the third supporting pad 19 together serve as the outsole of the shoe sole. To improve wearing comfort, the upper surfaces of the supporting forefoot 10 and the adjusting sole 2 are also covered with a material such as... Figure 13 The flexible insole 58 shown has a recess 63 on its lower surface that adapts to the elastic adjustment piece 47 to accommodate the elastic adjustment piece 47, and a corresponding protrusion on its upper surface; the accompanying drawings in the instruction manual illustrate the state of the sandal, such as... Figure 1 , Figure 5 and Figure 15 As shown, the sandals have instep straps (59) and ankle straps (60), corresponding to, as... Figure 11 As shown, the upper surface of the supporting forefoot 10 has front connecting grooves 61 on both sides near the width of the shoe, and the two ends of the foot strap 59 are fixed in the front connecting grooves 61, as shown. Figure 12As shown, the adjustable sole 2 has rear connecting grooves 62 on both sides of the shoe width direction near the rear end, and the two ends of the ankle strap 60 are fixed in the rear connecting grooves 62. For sports shoes, the width of the support thick sole can be increased based on the figure, and a flexible or elastic baffle can be set between the support thick sole and the adjustable sole 2. While not affecting the height change of the adjustable sole 2 based on the rotation of the support sole 1, the baffle is designed as a semi-enclosed structure to surround and cover the pawl 5 and support column 4 and other structures. This not only preserves the height adjustment function, but also helps to meet the user's needs for the appearance of the shoe.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A shoe with easily adjustable height, comprising a sole, the sole including a support sole and an adjustable sole, the adjustable sole being located above the support sole, the front end of the adjustable sole being rotatably connected to the support sole via a first pivot axis arranged along the width direction of the shoe; characterized in that: An adjustment assembly is located behind the first rotating shaft between the adjusting base and the supporting base. The adjustment assembly includes a support column, a pawl, and an elastic element. The support column is vertically fixed on the supporting base. Multiple toothed grooves are vertically distributed on one side of the support column. The pawl is close to the support column and located on the side where the toothed grooves are located. The pawl has locking teeth that match the toothed grooves. The pawl is rotatably connected to the adjusting base through a second rotating shaft arranged horizontally. The rotation of the pawl can cause the locking teeth to fall into and out of the toothed grooves. When the locking teeth fall into the toothed grooves, it is in a locked state that restricts the rotation and descent of the adjusting base. When the locking teeth are out of the toothed grooves, it is in an unlocked state that allows the adjusting base to rotate freely. When the locking teeth fall into the lowest toothed groove, there is a certain vertical distance between the rear end of the supporting base and the adjusting base. The elastic element is connected to the adjusting base and the pawl respectively. The elastic force of the elastic element keeps the pawl rotating towards the support column. The adjusting base or the supporting base is provided with an unlocking structure for driving the pawl to rotate and causing the locking teeth to disengage from the toothed grooves.

2. The shoe with easily adjustable height according to claim 1, characterized in that: The lower surface of the adjusting base is provided with a clearance groove. The upper end of the support column can rotate in and out of the clearance groove with the adjusting base. When the locking tooth falls into the lowest tooth groove, the upper end of the support column is located in the clearance groove.

3. The shoe with easily adjustable height according to claim 2, characterized in that: The rear side of the support column is an arc surface concentric with the first rotating shaft, and the plurality of toothed grooves are located on the arc surface and are distributed in an arc shape.

4. The shoe with easily adjustable height according to claim 3, characterized in that: The support column bends vertically into an arc shape and is concentric with the first pivot. The lower surface of the adjusting base protrudes in front of the relief groove to form a guide plate. The rear side of the guide plate is smoothly connected to the front wall of the relief groove and forms an arc-shaped guide surface that slides with the front side of the support column. When the locking teeth fall into the uppermost tooth groove, the upper end of the support column is higher than the lower end of the guide plate. The two ends of the guide plate extend backward in the shoe width direction to form side baffles. In the shoe width direction, the support column is located between the two side baffles and slides with them.

5. The shoe with easily adjustable height according to claim 3, characterized in that: The middle part of the pawl is rotatably connected to the adjusting sole via a second pivot. The lower end of the pawl forms a locking tooth, and the upper end is located in the relief groove. A sliding channel is provided in the adjusting sole along the length of the shoe. The front end of the sliding channel extends to communicate with the relief groove, and the rear end extends to the rear end face of the adjusting sole. A push rod is slidably provided in the sliding channel. The length of the push rod is greater than the length of the sliding channel. When the push rod slides forward, it can push the upper end of the pawl to rotate forward and disengage the locking tooth from the tooth groove. The push rod and the sliding channel form the unlocking structure.

6. The shoe with convenient height adjustment according to claim 5, characterized in that: The adjustable base has a mounting groove that communicates with the sliding channel. The elastic element is a spring, which is located in the mounting groove and sleeved on the push rod. The two ends of the spring are respectively connected to the push rod and the adjustable base. The upper end of the pawl has a vertically extending waist-shaped hole that runs through the width of the shoe. A transmission rod that matches the width of the waist-shaped hole is movably installed in the waist-shaped hole. The front end of the push rod is fixedly connected to the transmission rod. The elastic force of the spring acts on the pawl through the push rod and the transmission rod.

7. The shoe with easily adjustable height according to claim 6, characterized in that: The rear end face of the adjustable sole is provided with a pressing groove, which is connected to the sliding channel along the length of the shoe. The rear end of the push rod is connected to a pressing head that matches the pressing groove. The pressing head is located in the pressing groove and slides in cooperation. When the pressing head slides forward and abuts against the bottom surface of the pressing groove, it is in the unlocked state.

8. The shoe with easily adjustable height according to claim 6, characterized in that: A limiting groove is provided on the rear wall of the shoe groove. The limiting groove is connected to the sliding channel along the length of the shoe. The front end of the push rod is connected to a limiting head. The rear end of the limiting head is located in the limiting groove and slides in fit. The front end of the limiting head is connected to the transmission rod. When the limiting head slides backward to abut against the bottom surface of the limiting groove, it is locked.

9. The shoe with easily adjustable height according to claim 1, characterized in that: An elastic adjustment plate is provided on the support base in front of the adjustment base. The thickness direction of the elastic adjustment plate is the same as that of the support base. Either the front or rear end of the elastic adjustment plate is fixed at the position of the support base and serves as the fixed end, while the other end serves as the movable end. An adjustment mechanism is connected between the movable end and the front end of the adjustment base. When the adjustment base is rotated and raised, the adjustment mechanism can drive the movable end to move toward the fixed end, causing the elastic adjustment plate to undergo elastic deformation and arch upward.

10. The shoe with convenient height adjustment according to claim 9, characterized in that: A receiving groove is provided on the support base at the front of the adjusting base. Limiting holes are respectively provided on the front and rear side walls of the receiving groove. An elastic adjusting plate is movably disposed in the receiving groove. The front and rear ends of the elastic adjusting plate respectively protrude to form limiting protrusions corresponding to the limiting holes. The limiting protrusions are located in the corresponding limiting holes and slide in fit. A traction channel extending to the front end of the adjusting base is provided on the rear side wall of the receiving groove. A cable is slidably disposed in the traction channel. The front end of the elastic adjusting plate serves as the movable end and is connected to the front end of the cable. The rear end of the cable is connected to the front end of the adjusting base. When the adjusting base rotates and rises, the cable moves backward and pulls the movable end toward the fixed end. The cable and the traction channel form the adjusting mechanism.

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