Length-adjustable shoe

Abstract

On the premise that the structure of a shoe body is not changed, an inner toe cap is movably arranged in the shoe body, a driving piece for driving the inner toe cap to move backwards is arranged, the actual inner length of the shoe body is changed by adjusting the position of the inner toe cap, and the inner length can be adjusted in a floating mode within a certain range. Meanwhile, the scheme that the rotary shoe buckle serves as a driving piece and is matched with an inhaul cable to drive the inner toe cap to move backwards is provided, the structure is simple, the improvement cost is low, no special limitation exists on the material and the shape of the shoe body, the application range is wide, and the rotary shoe buckle is attractive in shape, easy to use and high in practicability; according to the shoe, the use requirements of children and teenagers with fast foot growth and people with different wearing tightness requirements can be well met, and the problem that the use requirements of existing shoes are difficult to meet due to the fact that the length is fixed or the length adjusting structure is complex can be effectively solved; the wearing flexibility of the shoes is improved, and the production and use cost of the shoes is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of adjustable length in footwear, specifically relates to a length adjustable shoe. BACKGROUND

[0002] Shoes are necessities of modern life, and each pair of shoes has a size corresponding to its length. The size of shoes is fixed and cannot adapt to different tightness wearing needs and length changes of feet, especially for children and adolescents, and it often appears that shoes are still new but do not fit and cannot be worn, which easily causes great waste. In addition, when people buy shoes, they often give up buying or buy shoes of similar size due to lack of size. Although shoes of similar size can be worn, they will be too loose or too tight due to the incompatibility between the length of the shoes and the length of the feet, and the shoes are too loose, which easily leads to unstable feet, increased foot pressure, aggravated fatigue and pain, and the shoes are too tight, which easily leads to toe compression and hallux valgus.

[0003] In view of the above-mentioned deficiencies, there are various solutions in the prior art. Commonly, a shoe tip plug is placed in the head of the shoe, but the shoe tip plug is mainly suitable for high-heeled shoes and loafers with relatively uniform head shapes, and has a narrow application range and poor flexibility in adjusting the length of the shoes due to the fixed size of the shoe tip plug. There are also shoes disclosed in Chinese patents CN205162051U, CN201995688U, CN202375145U and CN203789244U, which are all two-segment or multi-segment type telescopic soles cooperating with a flexible upper to adjust the length of the shoes. These solutions have complex structures, high costs and poor practicability. There is also a child telescopic shoe disclosed in Chinese patent CN107361454A, which uses a wave-shaped elastic sole cooperating with a cable to adjust the length of the shoes. However, this solution has a large limitation on the shape and material of the sole and has a narrow application range.

[0004] Therefore, it is necessary to design a shoe with a floating adjustable inner length, a simple structure, a wide application range and a low modification cost to meet the use needs of children and adolescents with fast-growing feet and people with different wearing tightness needs, and to reduce the difficulty of inventory for shoe manufacturers. SUMMARY

[0005] In view of the above-mentioned deficiencies of the prior art, the utility model aims to provide a length adjustable shoe to solve the technical problem that the length of the existing shoes is fixed or the length adjusting structure is complex, and to achieve the effects of improving the wearing flexibility of the shoes and reducing the production and use costs of the shoes.

[0006] To solve the above-mentioned technical problems, the utility model adopts the following technical scheme:

[0007] An adjustable-length shoe includes a shoe body and an inner length adjustment mechanism. The inner length adjustment mechanism includes an inner toe and a drive member. The inner toe is slidably disposed at a forward position inside the shoe body. The rearward side of the inner toe forms a front limiting surface of the foot to replace the inner wall of the front end of the shoe body. The drive member is fixedly disposed on the shoe body and drivenly connected to the inner toe. The drive member is used to drive the inner toe to move backward or forward to adjust the actual inner length of the shoe body.

[0008] Furthermore, the drive unit is located behind the inner toe, and the inner length adjustment mechanism also includes a cable arranged in the front-to-back direction. The rear end of the cable is connected to the drive unit, and the front end of the cable is connected to the inner toe. The drive unit drives the inner toe to move backward by pulling the cable.

[0009] Furthermore, there are two cables. The rear ends of the two cables are connected to the drive unit, and the front ends of the two cables are connected to the left and right sides of the inner toe of the shoe.

[0010] Furthermore, an elastic element is provided inside the shoe body in front of the inner toe. The elastic force of the elastic element corresponds to its own length direction. One end of the elastic element is connected to the forward-facing side of the inner toe, and the other end is connected to the sole or the inner wall of the front end of the shoe body. The end of the elastic element connected to the inner toe is higher than the other end. The elastic element is stretched as the inner toe moves backward.

[0011] Optionally, the drive element is a rotating shoe buckle.

[0012] Optionally, the drive unit includes a power supply, a controller, a motor, and a winding wheel. The controller is electrically connected to both the motor and the power supply. The controller is used to control the start and stop of the motor and adjust the rotation direction. The motor is driven by the winding wheel, and the rear end of the cable is fixedly connected to the winding wheel.

[0013] Furthermore, the drive unit also includes a Bluetooth module electrically connected to the controller. The Bluetooth module is used to communicate with external devices so that the external devices can control the motor to start and stop and adjust the direction of rotation through the controller.

[0014] Optionally, the shoe body includes a sole, an upper, and a tongue. A drive unit is fixedly disposed on the outside of the tongue. A cable is slidably embedded in the toe of the upper and in the tongue. The rear end of the cable extends outward from the tongue and connects to the drive unit, while the front end extends inward from the toe of the upper and connects to the inner toe.

[0015] Optionally, the shoe body includes a sole, an upper, and a tongue. The drive unit is fixedly located at the rear of the upper. Two cables are embedded in the sides of the upper. The rear ends of the two cables extend outward from the sides of the upper and connect to the drive unit. The front ends of the two cables extend inward from the sides of the upper and connect to the inner toe.

[0016] Optionally, the shoe body includes a sole, an upper, and a tongue. There are two drive components, which are respectively located on both sides of the upper. Two cables correspond one-to-one with the two drive components and are respectively embedded in both sides of the upper. The rear end of the cable extends outward to connect with the corresponding drive component, and the front end of the cable extends inward to connect with the inner toe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The adjustable-length shoe of this utility model, without changing the structure of the shoe body, has an inner toe that is movable at the front end inside the shoe body, and a driving component that drives the inner toe to move backward on the shoe body. By adjusting the inner toe, the actual inner length of the shoe body can be changed, allowing the inner length of the shoe body to fluctuate and adjust within a certain range. It is not only simple in structure and low in modification cost, but also has no particular restrictions on the material and shape of the shoe body, making it widely applicable and practical. It can better meet the needs of children and teenagers whose feet grow quickly, as well as people with different needs for wearing tightness. The adjustable inner length of the shoe body also helps to reduce the difficulty for shoe factories to prepare inventory according to market sales.

[0019] 2. The adjustable length shoe described in this utility model provides a solution that uses a rotating shoe buckle as a driving component to work with a cable to drive the inner toe of the shoe to move backward. The cable is embedded in the upper and the tongue, and the rotating shoe buckle is fixed on the tongue. This not only helps to reduce design and manufacturing costs, but also makes the rotating shoe buckle aesthetically pleasing and easy to use. It will not have a significant impact on the appearance of the shoe and may even better suit the aesthetic preferences of some people.

[0020] 3. The adjustable length shoe described in this utility model also provides a solution using an electric structure as the driving component, and can communicate with external devices by adding a Bluetooth module. With just a simple program design, the motor can be started and stopped and the rotation direction adjusted by communicating with the controller via a mobile phone, thereby realizing the inner length adjustment of the shoe body. This is suitable for people who have difficulty bending over or squatting to operate the buttons, thus improving the applicability and practicality of the adjustable length shoe. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the adjustable-length shoe described in Embodiment 1;

[0022] Figure 2 This is a schematic diagram of the inner length adjustment mechanism described in Embodiment 1;

[0023] Figure 3 This is a top view of the adjustable-length shoe described in Example 1 at its maximum size.

[0024] Figure 4 This is a top view of the adjustable-length shoe described in Example 1 in its smallest size configuration;

[0025] Figure 5 This is a side view of the adjustable-length shoe described in Embodiment 1 after being divided into left and right sections;

[0026] Figure 6 This is a three-dimensional schematic diagram of the adjustable-length shoe described in Embodiment 2;

[0027] Figure 7 This is a three-dimensional schematic diagram of the adjustable-length shoe described in Embodiment 3;

[0028] Figure 8 This is a top view of the adjustable-length shoe described in Embodiment 4;

[0029] The shoe body 1, sole 11, upper 12, lining 121, side waist 122, back waist 123, tongue 13, laces 14, front foot limiting surface 15, and rear foot limiting surface 16; inner length adjustment mechanism 2, inner toe 21, drive component 22, cable 23, elastic element 24, and thin rubber tube 25. Detailed Implementation

[0030] 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.

[0031] Example 1:

[0032] Please see Figure 1 , Figure 2 and Figure 3 An adjustable-length shoe includes a shoe body 1 and an inner length adjustment mechanism 2. The inner length adjustment mechanism 2 includes an inner toe 21 and a drive member 22. The inner toe 21 is movably disposed in the foreground position inside the shoe body 1. The interior of the shoe body 1 refers to the accommodating space for accommodating the human foot. The rearward side of the inner toe 21 forms a foot front limiting surface 15, which is used to replace the inner wall of the front end of the shoe body 1 to contact the wearer's toe. The drive member 22 is fixedly disposed on the shoe body 1 and drivenly connected to the inner toe 21. The drive member 22 is used to drive the inner toe 21 to move backward or forward and backward, and can achieve position locking to adjust the actual inner length of the shoe body 1.

[0033] The shoe body 1 is a typical shoe, such as children's shoes, leather shoes, sneakers, and athletic shoes. It mainly consists of a sole 11, upper 12, tongue 13, and laces 14. The upper 12 refers to the part of the sole 11 that wraps around the foot, excluding the tongue 13 and laces 14. The upper 12 can be divided from front to back into a lining 121, a side rib 122, and a rear rib 123. The inner wall of the rear rib 123 forms the rear foot limiting surface 16. The shoe body 1 restricts the forward and backward movement of the foot through the front foot limiting surface 15 and the rear foot limiting surface 16 to ensure stability during wearing and walking. The inner toe 21 replaces the inner wall of the front of the shoe body 1 to form the front foot limiting surface 15. The overall shape and size of the inner toe 21 can be adapted to the internal shape and size of the front of the shoe body 1 to improve the stability of the inner toe 21's forward and backward movement within the shoe body 1. Additionally, please refer to... Figure 5 In this embodiment, the rearward side of the inner toe 21 is designed as a concave surface corresponding to the internal shape of the front end of the shoe body 1. This not only allows for better fit to the toe when worn, improving wearing comfort, but also reduces the size of the inner toe 21 in the front-back direction. This reduces the impact of the inner toe 21 on the inner length of the shoe body 1 and increases the range of inner length adjustment without changing the length of the shoe body 1 itself. The inner toe 21 can be made of hard plastic (such as PC, PA, and PET) to maintain the overall structure. The rearward side of the inner toe 21 can be covered with a pad made of a relatively soft material (such as bubble cotton and PU foam) to improve the comfort of the foot being limited by its contact.

[0034] The adjustable length shoe of this utility model has an inner toe 21 movably set at the front end inside the shoe body 1. The rearward side of the inner toe 21 forms the front foot limiting surface 15, which replaces the inner wall of the front end of the shoe body 1 and contacts the wearer's toe. The distance between the front foot limiting surface 15 and the rear foot limiting surface 16 is the actual inner length of the shoe body 1. The actual inner length of the shoe body 1 can be adjusted by adjusting the front and rear position of the inner toe 21 through the driving component 22. Figure 3 The diagram shows the inner toe 21 located at the very front of the shoe body 1. At this point, the actual inner length of the shoe body 1 is at its longest, representing the largest size. Figure 4The diagram shows the inner toe 21 located at the rear end of the shoe body 1 within the range of adjustment by the drive component 22. At this point, the actual inner length of the shoe body 1 is at its shortest, representing the smallest size. The wearer can use the drive component 22 to flexibly adjust the actual inner length of the shoe body 1 within the range from the smallest to the largest size, according to their own comfort needs. For children and teenagers whose feet grow rapidly, they can choose shoes with adjustable lengths that correspond to their own foot length in the smallest size. As their feet grow, the actual inner length of the shoe body 1 is always adjusted to match their foot length, maximizing the lifespan of the shoes and reducing resource waste while ensuring stable wear. For people with varying comfort needs, they can choose shoes with adjustable lengths that include their own foot length within the size range formed by the smallest and largest sizes. This allows them to flexibly adjust the actual inner length of the shoe body 1 according to their comfort needs at different times (such as changes in the thickness of socks or when their feet are swollen), thereby improving wearing comfort.

[0035] The adjustable-length shoe of this invention, without altering the structure of the shoe body 1, features an inner toe 21 movable at the front end inside the shoe body 1, and a driving component 22 on the shoe body 1 to drive the inner toe 21 to move backward. By adjusting the inner toe 21, the actual inner length of the shoe body 1 can be changed, allowing the inner length of the shoe body 1 to fluctuate and adjust within a certain range. This design is not only simple in structure and low in modification cost, but also has no particular limitations on the material and shape of the shoe body 1, making it widely applicable and highly practical. The adjustable-length shoe of this invention can better meet the needs of children and teenagers with rapidly growing feet, as well as individuals with different requirements for fit. The adjustable inner length of the shoe body 1 also reduces the difficulty for shoe factories in preparing inventory based on market demand, effectively solving the problem that existing shoes, due to their fixed length or complex length adjustment structures, cannot meet user needs. This improves the flexibility of wearing shoes and reduces production and usage costs.

[0036] In implementation, the structure of the driving component 22 can be: an adjustment rod extending from the front end of the shoe body 1 into the interior, and the adjustment rod is threadedly connected to the shoe body 1, abutting or rotatingly connected to the inner shoe tip 21. By rotating the adjustment rod outside the shoe body 1, the length of the adjustment rod extending into the shoe body 1 is increased or decreased, causing the inner shoe tip 21 to move back and forth, thereby adjusting the actual inner length of the shoe body 1. However, this structure has a greater impact on the appearance of the shoe and has a weaker ability to adjust the inner length.

[0037] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 3The design includes a drive component 22 located behind the inner toe 21. The inner length adjustment mechanism 2 also includes a pull cable 23 arranged in the front-to-back direction. The rear end of the pull cable 23 is connected to the drive component 22, and the front end of the pull cable 23 is connected to the inner toe 21. The drive component 22 drives the inner toe 21 to move backward by pulling the pull cable 23. In practice, the pull cable 23 can be made of thin metal wire wrapped or coated with a protective layer on the outside. When the inner length of the shoe body 1 is to be shortened, the drive component 22 pulls the pull cable 23 backward to move the inner toe 21 backward. When the inner length of the shoe body 1 is to be increased, the drive component 22 appropriately loosens the pull cable 23 so that the inner toe 21 can move forward under the push of the foot to achieve the required increase in inner length. After the inner length is increased, the inner toe 21 is still restricted by the pull cable 23 to maintain the current inner length.

[0038] Thus, it is understandable that for the drive unit 22 to drive the inner toe 21 to move backward via the traction cable 23, it should at least include a winding reel for retracting and releasing the cable 23. Since the small cable 23 can be embedded in the upper 12 or the tongue 13, or even set along the inner wall of the upper 12, the winding reel and related structures of the drive unit 22 can also be embedded in the upper 12 or the tongue 13. The drive unit 22 only needs to expose the adjustment wheel or other similar components that are synchronously rotated and connected with the winding reel and are used for manual operation outside the upper 12. This not only has a small impact on the appearance of the shoe, but also has a good inner length adjustment capability.

[0039] However, since the drive component 22 has a certain volume, if it is embedded in the upper 12 or the tongue 13, it will inevitably have a significant impact on the comfort of wearing shoes with thin upper 12 and tongue 13, resulting in a reduction in the practicality of the adjustable length shoe. Therefore, in this embodiment, the drive component 22 is fixedly set on the outside of the upper 12 or the tongue 13, and the cable 23 is embedded in the upper 12 or / and the tongue 13 in a way that allows it to slide back and forth. The rear end of the cable 23 extends outward from the upper 12 or / and the tongue 13 and connects to the drive component 22, and the front end of the cable 23 extends inward from the upper 12 or / and the tongue 13 and connects to the forward-facing side of the inner toe 21.

[0040] Furthermore, considering that the complete exposure of the drive component 22 might affect the appearance of the length-adjustable shoe, please refer to [the relevant documentation / reference]. Figure 1 , Figure 2 and Figure 3In this embodiment, a rotating shoe buckle is used as the driving component 22. The rotating shoe buckle is a mature existing product, a device used in shoes to control the tightness of shoelaces via a knob. It typically includes a knob, a shoelace winding disc, a toothed disc, and a support base. The shoelaces can be quickly tightened and loosened by rotating the knob clockwise and counterclockwise, or by rotating the knob to tighten them and by lifting the knob to loosen them. The operation depends on the structure of the rotating shoe buckle and is not limited to any specific method. The rotating shoe buckle is aesthetically pleasing and easy to use, and it not only does not significantly affect the appearance of the adjustable-length shoe, but may even be more suitable for certain groups of people. Aesthetically, the rotating buckle is positioned rearward on the outside of the tongue 13, and the cable 23 is embedded in the head of the upper 12 (i.e., the inner lining 121 of the upper 12) and the tongue 13. The rear end of the cable 23 extends outward from the tongue 13 and connects with the rotating buckle, while the front end extends inward from the inner lining 121 and connects with the forward-facing side of the inner toe 21. During normal walking, the force exerted by the foot on the inner toe 21 is relatively small, and the tongue 13 is constrained by the upper 12 and the shoelaces 14, preventing it from moving easily. This ensures the stability of the rotating buckle's position, allowing for inner length adjustment via the rotating buckle, cable 23, and inner toe 21.

[0041] In this way, by using the rotating shoe buckle as the driving component 22, it is only necessary to connect the end of the cable 23 to the rotating shoe buckle in the same way as the shoelace 14. When the inner length of the shoe body 1 is to be shortened, the rotating shoe buckle is rotated to retract part of the cable 23 so that the inner toe 21 moves backward. When the inner length of the shoe body 1 is to be increased, the rotating shoe buckle is rotated to release part of the cable 23 so that the inner toe 21 can move forward under the push of the foot. There is no need to redesign the driving component 22, which helps to reduce design and manufacturing costs.

[0042] To avoid the cable 23 coming into contact with the foot and affecting wearing comfort, as described above, the cable 23 is embedded in the insole 121 and the tongue 13, and the front end of the cable 23 extending inward from the insole 121 is connected to the forward-facing side of the inner toe 21. However, when the drive unit 22 pulls the inner toe 21 backward through the cable 23, since there is a certain angle between the front end of the cable 23 and the sole 11, the cable 23 will provide not only a horizontal backward force but also an upward force when pulling the inner toe 21. This may cause the inner toe 21 to move upward or even flip backward during the backward movement, especially when the inner toe 21 is far from the front end, the inner toe 21 has room to move upward, and the foot is not inserted.

[0043] For this purpose, please see Figure 4 and Figure 5In this embodiment, an elastic element 24 is also provided inside the shoe body 1 in front of the inner toe 21. The elastic force direction of the elastic element 24 corresponds to its own length direction. One end of the elastic element 24 is connected to the forward-facing side of the inner toe 21, and the other end of the elastic element 24 is connected to the sole 11 or the inner wall of the front end of the shoe body 1. One end of the elastic element 24 is higher than the other end of the elastic element 24. The elastic element 24 is stretched as the inner toe 21 moves backward. In this way, the elastic element 24 also has an angle with the sole 11. When the cable 23 pulls the inner toe 21 to move backward, the elastic element 24 not only provides a horizontal forward force, but also a downward force. First, the downward force of the elastic element 24 on the inner toe 21 is used to overcome the upward force of the cable 23 on the inner toe 21, so as to avoid The absence of upward movement or even backward flipping of the inner toe 21 during the backward movement process helps improve the stability of the inner toe 21 inside the shoe body 1. Secondly, the force exerted by the elastic element 24 on the forward movement of the inner toe 21 creates a certain resistance to the backward movement of the inner toe 21, which can prevent the response of the inner toe 21 when moving backward by rotating the shoe buckle and the cable 23 from being too sensitive. This helps to optimize the feel of adjusting the inner length and improve practicality. At the same time, the elastic element also has a reset and stabilizing function. After the shoe buckle is loosened or the cable 23 is released by rotating it, the inner toe 21 moves forward and resets under the elastic force of the elastic element and stays at the front end inside the shoe body 1 to stably maintain the maximum size. In practice, the elastic element can be the elastic band (elastic thread) commonly used in clothing, shoes and socks or elastic bands made of rubber.

[0044] Please see Figure 2 and Figure 3 In this embodiment, two cables 23 are used. The rear ends of the two cables 23 are connected to the drive component 22, and the front ends of the two cables 23 are connected to the left and right sides of the inner toe 21 facing forward, respectively. In this way, the traction force of the inner toe 21 by the cables 23 is more balanced in the left and right directions, which can effectively prevent the inner toe 21 from swinging left and right during the backward movement, which is beneficial to improving the practicality of the adjustable length shoe.

[0045] The adjustable shoe described in this embodiment uses a cable instead of shoelaces to connect the rotating buckle to the inner toe drive, cleverly realizing the adjustment of the shoe's inner length by adjusting the front and back position of the inner toe. This breaks the inherent usage pattern of the inner toe and rotating buckle, overcoming conventional thinking. The entire inner length adjustment mechanism has only the cable embedded in the shoe upper. For manufacturers, this does not change the production molds and processes, nor does it alter the original shoe design and production, resulting in a small increase in cost. For consumers, it provides another option to meet size requirements, is easy to use, and is not significantly more expensive than ordinary shoes, making it highly practical.

[0046] Example 2:

[0047] Please seeFigure 6 The difference from Embodiment 1 is that in this embodiment, the driving component 22 is located at the rear of the shoe upper 12 (i.e., at the heel counter 123), and two cables 23 are embedded in both sides of the shoe upper 12. The rear ends of the two cables 23 extend outward from both sides of the shoe upper 12 and connect to the driving component 22, while the front ends extend inward from both sides of the shoe upper 12 and connect to the forward-facing side of the inner toe 21. Thus, the heel counter 123 has better stability in the fore-and-aft direction than the tongue 13. Compared to fixing the driving component 22 to the tongue 13, placing the driving component 22 in the shoe upper... The cable 23 at the back waist 123 provides a more stable traction to the inner toe 21, which can effectively reduce the possibility of the inner toe 21 moving forward due to foot thrust after the inner length adjustment is completed. This helps to improve the reliability of adjusting the inner length of the adjustable shoe, making it more suitable for complex wearing scenarios and situations where the foot exerts more force, such as mountaineering and rock climbing. In addition, the drive component 22 is located at the rear of the upper 22, which allows the shoe body 1 to adopt a shoe style without a tongue 13 or without a back on the upper 12, which helps to improve the applicability and practicality of the adjustable shoe.

[0048] Example 3:

[0049] Please see Figure 7 The difference from Embodiment 1 is that in this embodiment, there are two drive members 22, which are respectively disposed on both sides of the upper 12 (i.e., the side waist 122 of the shoe). Two cables 23 correspond one-to-one with the two drive members 22 and are respectively embedded in both sides of the upper 12. The rear end of the cable 23 extends outward to connect with the corresponding drive member 22, and the front end of the cable 23 extends inward to connect with the forward-facing side of the inner toe 21. In this way, while adjusting the front and rear position of the inner toe 21 to adjust the actual inner length of the shoe body 1, the two drive members 22 can also be adjusted by adjusting their position. The drive element 22 pulls the inner toe 21 backward by an inconsistent amount, causing the inner toe 21 to deflect to a certain extent in the left and right direction. This allows the inner toe 21 to better fit the foot, whose toe contours vary due to differences in toe length, thus improving the comfort and practicality of the adjustable-length shoe. In addition, the drive element 22 is located on both sides of the upper 22, allowing the shoe body 1 to adopt a shoe style without a tongue 13 or without a back on the upper 12, which improves the applicability and practicality of the adjustable-length shoe.

[0050] Example 4:

[0051] Please see Figure 8The difference from Embodiment 1 is that in this embodiment, the drive component 22 no longer uses a manual rotating shoe buckle, but adopts an electric structure. The drive component 22 includes a power supply, a controller, a motor, and a winding wheel. The controller is electrically connected to the motor and the power supply respectively. The controller is used to control the start and stop of the motor and adjust the rotation direction. The motor is driven by the winding wheel. The rear end of the cable 23 is fixedly connected to the winding wheel. Specifically, the controller can be a circuit board equipped with a start / stop button, a rotation direction switching button, and a microcontroller. In this way, the inner length of the shoe body 1 can be adjusted simply by pressing the button, making it more convenient and faster to use.

[0052] Based on the electric structure, the drive component 22 can also be designed to include a Bluetooth module electrically connected to the controller. The Bluetooth module is used to communicate with external devices. In this way, with just a simple program design, the motor can be started and stopped and the rotation direction adjusted by communicating with the controller via a mobile phone, thereby realizing the adjustment of the inner length of the shoe body 1. This is suitable for people who have difficulty bending over and squatting to operate the buttons, such as people with leg injuries or elderly people with mobility difficulties.

[0053] In addition, to reduce the friction of the cable 23 in the upper 12 and / or the tongue 13, thereby reducing the motor load and ensuring feasibility, in this embodiment, a thin rubber tube 25 is also pre-embedded in the upper 12 and / or the tongue 13. The cable 23 is placed in the thin rubber tube 25, which not only facilitates the installation of the cable 23 during production, but also reduces the resistance of the cable 23 sliding and the wear on the upper 12 and / or the tongue 13, reduces the motor load and energy consumption, and helps to improve the feasibility and practicality of the adjustable length shoe.

[0054] 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 adjustable length, characterized in that: The shoe includes a shoe body and an inner length adjustment mechanism. The inner length adjustment mechanism includes an inner toe and a drive component. The inner toe is slidably positioned at the front of the shoe body. The rearward side of the inner toe forms the front limiting surface of the foot, which replaces the inner wall of the front end of the shoe body. The drive component is fixedly mounted on the shoe body and drivenly connected to the inner toe. The drive component is used to drive the inner toe to move backward or forward to adjust the actual inner length of the shoe body.

2. The adjustable-length shoe according to claim 1, characterized in that: The drive unit is located behind the inner toe. The inner length adjustment mechanism also includes a cable arranged in the front-to-back direction. The rear end of the cable is connected to the drive unit, and the front end of the cable is connected to the inner toe. The drive unit drives the inner toe to move backward by pulling the cable.

3. The adjustable-length shoe according to claim 2, characterized in that: There are two cables. The rear ends of the two cables are connected to the drive unit, and the front ends of the two cables are connected to the left and right sides of the inner toe of the shoe.

4. The adjustable-length shoe according to claim 3, characterized in that: An elastic element is provided inside the shoe body in front of the inner toe. The elastic force of the elastic element corresponds to its own length direction. One end of the elastic element is connected to the forward-facing side of the inner toe, and the other end is connected to the sole or the inner wall of the front of the shoe body. The end of the elastic element connected to the inner toe is higher than the other end. The elastic element is stretched as the inner toe moves backward.

5. The adjustable-length shoe according to claim 3, characterized in that: The driving component is a rotating shoe buckle.

6. The adjustable-length shoe according to claim 3, characterized in that: The drive unit includes a power supply, a controller, a motor, and a winding wheel. The controller is electrically connected to both the motor and the power supply. The controller is used to control the start and stop of the motor and adjust the rotation direction. The motor is driven by the winding wheel, and the rear end of the cable is fixedly connected to the winding wheel.

7. The adjustable-length shoe according to claim 6, characterized in that: The drive unit also includes a Bluetooth module electrically connected to the controller. The Bluetooth module is used to communicate with external devices so that the external devices can control the motor to start and stop and adjust the direction of rotation through the controller.

8. A length-adjustable shoe according to any one of claims 3-7, characterized in that: The shoe body includes a sole, upper, and tongue. The drive unit is fixedly located on the outside of the tongue. The cable is slidably embedded in the toe of the upper and the tongue. The rear end of the cable extends outward from the tongue and connects to the drive unit, while the front end extends inward from the toe of the upper and connects to the inner toe.

9. A length-adjustable shoe according to any one of claims 3-7, characterized in that: The shoe body includes a sole, upper, and tongue. The drive unit is fixedly located at the rear of the upper. Two cables are embedded in the sides of the upper. The rear ends of the two cables extend outward from the sides of the upper and connect to the drive unit. The front ends of the two cables extend inward from the sides of the upper and connect to the inner toe.

10. A length-adjustable shoe according to any one of claims 3-7, characterized in that: The shoe body includes a sole, upper, and tongue. There are two drive components, which are respectively located on both sides of the upper. Two cables correspond one-to-one with the two drive components and are embedded in both sides of the upper. The rear end of the cable extends outward to connect with the corresponding drive component, and the front end of the cable extends inward to connect with the inner toe box.

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