A children's sandal with adjustable heat preservation effect

Abstract

This application relates to the technical field of footwear design, and provides a pair of children's sandals with adjustable heat preservation effect, including a sole and an upper fixed on the upper surface of the sole. A plurality of ventilation holes are formed in the side edge of the upper close to the sole; a plurality of string threading mechanisms are embedded in the side edge of the sole, and each string threading mechanism is respectively arranged below each ventilation hole; the string threading mechanism includes a mounting block embedded in the sole and a connecting rope wound inside the mounting block. One end of the connecting rope is connected inside the mounting block, and the other end of the connecting rope passes through the mounting block and is normally exposed outside the mounting block; a winding assembly for normally winding the connecting rope is arranged between the connecting rope and the mounting block; a plurality of straps are arranged inside each ventilation hole, and each strap is formed with a through hole for the connecting rope to pass through. Based on this, when children wear sandals and encounter sudden rainfall when going out, the heat preservation effect of the shoes can be adjusted, reducing the possibility of children's feet getting cold.

Description

Technical Field

[0001] This application relates to the technical field of footwear design, and particularly to a pair of children's sandals with adjustable heat preservation effect. Background Art

[0002] Children's sandals refer to sandals worn by children. Such sandals are specifically designed to fit the foot growth and development characteristics of children of different ages, emphasizing lightness, breathability, comfort, and cuteness to meet the aesthetic needs during childhood.

[0003] Currently, most of the uppers of sandals on the market are of a hollow structure and are mainly used for children to wear in summer to improve their comfort after wearing. However, in areas with frequent summer rainfall such as southern China, when children go out wearing sandals on hot days, they may encounter sudden rainfall. It is difficult for parents to promptly change the sandals their children are wearing. Moreover, when it rains, the weather turns cold, which easily makes children's feet catch cold, and then it is easy for children to develop colds, fevers and other conditions, affecting children's physical health. Summary of the Invention

[0004] In order to reduce the situation of children's feet getting cold when they wear sandals and encounter sudden rainfall, this application provides a pair of children's sandals with adjustable heat preservation effect.

[0005] The pair of children's sandals with adjustable heat preservation effect provided by this application adopts the following technical solutions:

[0006] A pair of children's sandals with adjustable heat preservation effect includes a sole and an upper fixed on the upper surface of the sole. A plurality of ventilation holes are formed in the side edge of the upper close to the sole, and each of the ventilation holes is arranged at intervals along the outer peripheral side of the upper; a plurality of string-passing mechanisms are embedded in the side edge of the sole, and each string-passing mechanism is respectively arranged below each ventilation hole; the string-passing mechanism includes a mounting block embedded in the sole and a connecting rope wound inside the mounting block. One end of the connecting rope is connected inside the mounting block, and the other end of the connecting rope passes through the mounting block and is normally exposed outside the mounting block; a winding assembly for normally winding the connecting rope is arranged between the connecting rope and the mounting block; a plurality of straps are arranged inside each ventilation hole, all the straps are closely arranged along the inner peripheral wall of the ventilation hole, and each strap is formed with a perforation for the connecting rope to pass through.

[0007] By adopting the above technical solution, when the weather is hot in summer and children wear these sandals to go out, the breathable holes on the surface of the shoe upper can improve the breathability of the sandals, thereby enhancing the comfort of children's feet. When encountering sudden rain during going out, parents or children can pull the connecting rope exposed on the side edge of the sole and partially exposed outside the mounting block to unwind the connecting rope outward; since a plurality of straps with perforations are installed on the inner peripheral wall of the breathable holes, people can staggeredly thread the unwound connecting rope through the perforations of each strap, so that the connecting rope covers the breathable holes, which can reduce the volume of air entering the inner side of the shoe upper through the breathable holes per unit time, play a role in adjusting the heat preservation effect of the shoes, reduce the possibility of children's feet getting cold when encountering sudden rain and children do not change to warm shoes, and is beneficial to keeping children in a healthy physical condition.

[0008] Optionally, a cavity for accommodating the connecting rope is provided inside the mounting block, a partition is installed inside the cavity, and the cavity is divided by the partition to form a winding chamber and an elastic chamber. One end of the connecting rope located in the cavity is connected to the inner wall of the winding chamber;

[0009] The winding assembly includes a movable rod group, a limiting rod group, a moving block and an elastic member. The movable rod group is movably installed in the winding chamber, the moving block is movably installed in the elastic chamber, the partition is provided with a movable groove penetrating through the upper and lower sides of the partition, and the movable rod group passes through the movable groove and is connected to the moving block; the limiting rod group is fixed in the winding chamber, and the connecting rope is alternately wound between the movable rod group and the limiting rod group; the elastic member is arranged between the moving block and the inner wall of the elastic chamber, and the elastic member normally forces the movable rod group to move away from the limiting rod group.

[0010] By adopting the above technical solution, in this application, the connecting rope is alternately wound around the movable rod group and the limiting rod group. When it is necessary to thread and fix the connecting rope to each strap, parents or children can pull the connecting rope outward to make the connecting rope drive the movable rod group and the moving block to move towards the limiting rod group. At this time, the connecting rope can be gradually unwound, and the moving block can gradually squeeze the elastic member to cause elastic deformation of the elastic member; when the weather clears and it is necessary to reset the connecting rope, after the connecting rope is disengaged from the perforations of each strap one by one, the elastic force of the elastic member acting on the moving block can make the moving block drive the movable rod group to move away from the limiting rod group, so that the movable rod group moves back to a position far from the limiting rod group, and further makes the moving rod group and the limiting rod group rewind the connecting rope for the next use of the connecting rope.

[0011] Optionally, the movable rod group includes a connecting rod and a plurality of movable rods, each movable rod is connected to the connecting rod, and the end of the connecting rod far from the movable rod is connected to the moving block; the limiting rod group includes a plurality of limiting rods, and each limiting rod is fixed to the inner wall of the winding chamber; the connecting rope is alternately wound between the movable rod and the limiting rod.

[0012] By adopting the above technical solution, the connecting rope is alternately wound around each movable rod and each limiting rod in turn, which can greatly increase the winding length of the connecting rope, so that parents or children can pull the connecting rope to unwind and make the connecting rope smoothly block the entire ventilation hole.

[0013] Optionally, one end of the connecting rope exposed outside the mounting block is connected with a nylon cloth piece. A plurality of structure grooves are arranged on the outer peripheral side of the nylon cloth piece, and folding parts are formed at the parts of the nylon cloth piece between every two adjacent structure grooves.

[0014] By adopting the above technical solution, during the process of threading the connecting rope through the perforations of the girdle, folding all the folding parts downward one by one can enable the end of the connecting rope to smoothly pass through the perforations of the girdle. After the connecting rope completes threading and covers the ventilation hole, unfolding each folding part, the folding parts can play a role in positioning the connecting rope, reducing the occurrence of the connecting rope retracting inward, which is beneficial to firmly covering the ventilation hole with the connecting rope and reducing the possibility of children's feet getting cold.

[0015] Optionally, each folding part is connected with an elastic cord, and one ends of all the elastic cords far away from the folding parts are commonly connected with a sleeve belt, and the sleeve belt is movably sleeved on the outer side of the connecting rope.

[0016] By adopting the above technical solution, by commonly connecting one ends of all the elastic cords far away from the folding parts to the sleeve belt, when parents or children fold the folding parts downward to facilitate the connecting rope to pass through the perforations of the girdle, by pulling the sleeve belt and forcing the sleeve belt to move in a direction away from the folding parts, the sleeve belt can drive each elastic cord and simultaneously pull each folding part to fold downward at the same time, thereby greatly improving the convenience of threading the connecting rope through the perforations of the girdle and facilitating the installation operation.

[0017] Optionally, a decorative piece is provided at one end of the nylon cloth piece far away from the connecting rope, and the decorative piece is detachably connected to the nylon cloth piece through a connecting component; a storage groove is formed in the sole, and the decorative piece is normally stored in the storage groove.

[0018] By adopting the above technical solution, the decorative piece is normally stored in the storage groove inside the sole. After the connecting rope is threaded through the perforations of each girdle and covers the ventilation hole, parents or children can take out the decorative piece and install the decorative piece on the nylon cloth piece at the end of the connecting rope through the connecting component, so as to play a decorative role, improve the beauty and interest of the sandals, and at the same time the decorative piece can also play a role in blocking wind to a certain extent, further reducing the possibility of children's feet getting cold.

[0019] Optionally, the ventilation holes located at the front part of the shoe upper are set as the first ventilation holes, and the straps fixed to the inner peripheral wall of the first ventilation holes are set as the first straps; the connecting ropes are horizontally and staggeredly threaded through each of the first straps; the ventilation holes located at the rear part of the shoe upper are set as the second ventilation holes, and the straps fixed to the inner peripheral wall of the second ventilation holes are set as the second straps; a third strap is further installed on the upper surface of the sole, and the third strap is located at the edge of the heel part of the sole; the connecting ropes are vertically and staggeredly threaded between the second strap and the third strap.

[0020] By adopting the above technical solution, the projection of the first ventilation holes at the front part of the shoe upper on the upper surface of the sole is approximately a straight line, and the perforations through which the connecting ropes are horizontally and staggeredly threaded through each of the first straps can smoothly cover the first ventilation holes. The projection of the second ventilation holes at the rear part of the shoe upper on the upper surface of the sole is approximately an arc. By vertically and staggeredly threading the connecting ropes between the second strap and the third strap, the projection of the connecting ropes on the upper surface of the sole can also be an arc, thereby reducing the situation where the connecting ropes press against the child's heel, which is beneficial to maintaining the comfort of the child wearing the sandals.

[0021] Optionally, an installation groove for installing a rope threading mechanism is provided on the outer peripheral wall of the sole, and a plastic strip for covering all the rope threading mechanisms is provided at the notch of the installation groove. One side in the extending direction of the plastic strip is fixed to the sole, and the other side in the extending direction of the plastic strip is detachably installed on the sole through a connecting structure.

[0022] By adopting the above technical solution, by providing a plastic strip to cover all the rope threading mechanisms, it is possible to reduce the situation where external sand, gravel or muddy water enters the installation groove when the child wears the sandals, which is beneficial to keeping the connecting ropes clean and reducing the possibility of the child's feet getting sand, gravel or muddy water when the connecting ropes are threaded through the perforations of the straps subsequently.

[0023] Optionally, an extension groove is provided on the side wall of the notch of the installation groove, and the width of the extension groove is greater than the width of the installation groove; the plastic strip is fitted and installed in the extension groove; the connecting structure includes a plurality of insertion posts fixed to the plastic strip and a plurality of insertion slots provided in the extension groove, and each of the insertion posts is respectively inserted into each of the insertion slots; an interference fit is provided between each insertion post and the insertion slot.

[0024] By adopting the above technical solution, by respectively inserting each of the insertion posts into each of the insertion slots and providing an interference fit between the insertion post and the insertion slot, the insertion post can be firmly fixed in the insertion slot, and further the plastic strip can be firmly installed in the extension groove; in addition, when the connecting ropes need to be used, by pulling the plastic strip, the insertion posts can be quickly separated from the insertion slots, and further the plastic strip can be quickly separated from the extension groove; it has the advantage of being convenient for disassembly and assembly.

[0025] Optionally, a heat preservation cushion sleeve is sleeved on the outer peripheral side of the connecting rope.

[0026] By adopting the above technical solution, when the connecting rope is threaded through the perforations of each strap and covers the ventilation holes, the child's feet can partially abut against the warm cushion sleeve on the outer peripheral side of the connecting rope, thereby further improving the heat preservation ability of the sandals during rainfall and reducing the occurrence of the child's feet getting cold.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When encountering sudden rainfall, people unwind the connecting rope outward and make the connecting rope alternately pass through each perforation of each strap, which can enable the connecting rope to cover the ventilation holes, play a role in adjusting the heat preservation effect of the shoes, reduce the possibility of the child's feet getting cold, and is beneficial to keeping the child in a healthy physical condition;

[0029] 2. By alternately winding the connecting rope around each movable rod and each limiting rod in sequence, the winding length of the connecting rope can be greatly increased, so that it is convenient for parents or children to pull the connecting rope to unwind and enable the connecting rope to successfully block the entire ventilation hole;

[0030] 3. By providing the nylon cloth piece, when the connecting rope is threaded through the perforation of the strap, all the folding parts of the nylon cloth piece are folded down one by one, which can enable the end of the connecting rope to smoothly pass through the perforation of the strap; after the connecting rope is threaded, the folding parts are unfolded, and the folding parts can play a role in positioning the connecting rope and reduce the occurrence of the connecting rope retracting inward. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the overall structural schematic diagram of this embodiment;

[0032] Figure 2 is Figure 1 the enlarged view of part A in

[0033] Figure 3 is the partial cross-sectional view of the rope threading mechanism in this embodiment, mainly showing the structure of the connecting rope and the winding component;

[0034] Figure 4 is the partial structural schematic diagram of the connecting rope and the winding component in this embodiment;

[0035] Figure 5 is Figure 2 the enlarged view of part B in

[0036] Figure 6 is the structural schematic diagram of the decorative piece in this embodiment;

[0037] Figure 7 is the side view of the children's sandals in this embodiment.

[0038] Explanation of the reference numerals: 1. sole; 11. mounting groove; 12. extension groove; 13. storage groove; 14. slot; 15. third strap; 2. upper; 21. first ventilation hole; 22. first strap; 23. second ventilation hole; 24. second strap; 3. rope threading mechanism; 31. mounting block; 311. partition; 312. movable groove; 313. winding chamber; 314. elastic chamber; 32. connecting rope; 33. nylon cloth piece; 331. structural groove; 332. folding part; 333. I-shaped buckle female buckle; 34. strap; 35. elastic rope; 4. winding assembly; 41. movable rod group; 411. movable rod; 412. connecting rod; 42. limiting rod; 43. moving block; 44. compression spring; 5. decorative sheet; 51. I-shaped button buckle; 6. plastic strip; 61. plug column. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-7 This application is described in further detail.

[0040] The embodiment of the present application discloses a pair of children's sandals with heat-regulating and heat-insulating effects.

[0041] Reference Figure 1 , comprising an upper 2 and a sole 1, wherein a plurality of ventilation holes are provided at the side edge of the upper 2 close to the sole 1, wherein the ventilation holes are arranged at intervals around the outer peripheral surface of the upper 2, and each ventilation hole is connected to the bottom edge of the upper 2; a plurality of straps are provided inside each ventilation hole, and all the straps are closely arranged along the inner peripheral wall of the ventilation hole; the two side edges of the straps in the extension direction are respectively sewn to the inner wall of the ventilation hole, so that the straps are formed with perforations.

[0042] Reference Figure 2 The outer side wall of the sole 1 is provided with a mounting groove 11, the number of the mounting grooves 11 is equal to the number of the ventilation holes, and each mounting groove 11 is located directly below each ventilation hole; each mounting groove 11 is matched with a threading mechanism 3. The slot side wall of each mounting groove 11 is provided with an extension groove 12, the width of the extension groove 12 is greater than the width of the mounting groove 11; each extension groove 12 is equipped with a plastic strip 6, which is made of a relatively hard plastic material, so that it has good stiffness; one side of the plastic strip 6 in the extension direction is bonded and fixed to the inner wall of the extension groove 12, and the other side of the plastic strip 6 in the extension direction is detachably installed in the extension groove 12 through a connecting structure, so that the plastic strip 6 can be matched and embedded in the extension groove 12 and can cover all the threading mechanisms 3, thereby protecting the threading mechanisms 3.

[0043] Reference Figure 2, the connecting structure includes a plurality of insertion posts 61 fixed to the plastic strip 6 and respective slots 14 formed in the extension groove 12. Each of the insertion posts 61 is integrally formed on the upper and lower sides of the plastic strip 6. The number of slots 14 is set to be equal to the number of insertion posts 61. Each of the slots 14 is provided on the inner top wall and the inner bottom wall of the extension groove 12. And when the plastic strip 6 is fitted into the extension groove 12, each insertion post 61 can be fitted and inserted into the corresponding slot 14. The fitting method between the insertion post 61 and the slot 14 is interference fit, which is used to reduce the possibility of the insertion post 61 accidentally detaching from the slot 14 when the sole 1 is squeezed.

[0044] Refer to Figure 2 , Figure 3 , the string threading mechanism 3 includes a mounting block 31, a connecting rope 32 and a winding assembly 4. The mounting block 31 is made of a hard material. The mounting block 31 is fitted into the mounting groove 11. And the upper surface of the mounting block 31 is adhesively fixed to the inner fixed wall of the mounting groove 11 to reduce the occurrence of the mounting block 31 detaching from the mounting groove 11. A cavity is provided inside the mounting block 31. A horizontally arranged partition 311 is installed inside the cavity. The partition 311 divides the cavity into a winding chamber 313 and an elastic chamber 314. In this embodiment, the winding chamber 313 is located below the elastic chamber 314. In other embodiments, the winding chamber 313 can also be located above the elastic chamber 314 or on the outside of the elastic chamber 314, which can be selectively set according to actual needs.

[0045] Refer to Figure 2 , Figure 3 , the connecting rope 32 is arranged inside the winding chamber 313. One end of the connecting rope 32 is connected to the inner wall of the winding chamber 313 close to the extension groove 12. A wire threading hole is formed in the inner wall of the winding chamber 313 close to the extension groove 12. The free end of the connecting rope 32 passes through the wire threading hole and is normally partially exposed outside the mounting block 31. The winding assembly 4 is arranged inside the cavity. The winding assembly 4 can normally wind the connecting rope 32 into the winding chamber 313. At this time, only the free end of the connecting rope 32 is exposed outside the mounting block 31. When encountering sudden rainfall, by pulling the free end of the connecting rope 32 to unwind the connecting rope 32 and threading the connecting rope 32 through the perforations of each strap in turn and alternately, the connecting rope 32 can cover the ventilation holes, thereby playing a role in adjusting the heat preservation effect of the sandals. A heat preservation pad sleeve is also sleeved on the outer peripheral side of the connecting rope 32. The heat preservation pad sleeve is made of pure cotton yarn to process a mesh cloth layer, which can further improve the heat preservation effect after the connecting rope 32 covers the ventilation holes.

[0046] Refer to Figure 3 , Figure 4, the rewinding assembly 4 includes a movable rod group 41, a limiting rod group, a moving block 43 and an elastic member. The movable rod group 41 includes a connecting rod 412 and multiple movable rods 411. All the movable rods 411 are arranged at intervals and side by side, and are all located inside the winding chamber 313. The axial length of each limiting rod 42 is adapted to the height of the winding chamber 313. The tops of all the movable rods 411 are jointly connected to the connecting rod 412. The moving block 43 is movably installed inside the elastic chamber 314. The partition 311 is provided with a movable slot 312 penetrating through the upper and lower sides of the partition 311. One end of the connecting rod 412 away from the movable rod 411 passes through the movable slot 312 and is connected to the moving block 43, so that when the moving block 43 moves, it can drive the movable rod group 41 to move along the extension direction of the movable slot 312.

[0047] Refer to Figure 3 , Figure 4 , the limiting rod group includes multiple limiting rods 42. Each limiting rod 42 is arranged inside the winding chamber 313. The axial length of the limiting rod 42 is set to be equal to the height of the winding chamber 313. The top of the limiting rod 42 is fixedly connected to the partition 311, and the bottom of the limiting rod 42 is fixedly connected to the inner wall of the mounting block 31. All the limiting rods 42 are arranged at intervals and side by side, and all the limiting rods 42 are close to the side of the winding chamber 313 where the wire passing holes are provided. The connecting rope 32 is alternately wound around each movable rod 411 and each limiting rod 42 in turn, so that the connecting rope 32 is arranged in a serpentine shape as a whole.

[0048] Refer to Figure 3 , Figure 4 , the elastic member is arranged inside the elastic chamber 314. The elastic member in this embodiment is a compression spring 44. One end of the compression spring 44 is connected to the moving block 43, and the other end of the compression spring 44 is connected to the inner wall of the elastic chamber 314. The compression spring 44 can always generate a force acting on the moving block 43, and then drive the movable rod 411 to stay at a position far from the limiting rod 42 under normal conditions. In other embodiments, the elastic member can also be an elastic sponge or silica gel, as long as it can make the movable rod 411 move away from the limiting rod 42. When people need to thread the connecting rope 32 through the girdle, pulling the connecting rope 32 can drive the movable rod 411 to move towards the limiting rod 42, so that the connecting rope 32 is gradually unwound. After the connecting rope 32 is detached from the girdle, the elastic force of the compression spring 44 can make the movable rod 411 move away from the limiting rod 42, so as to automatically complete the rewinding of the connecting rope 32 for the next use of the connecting rope 32.

[0049] Refer to Figure 5, a nylon cloth piece 33 is connected to the free end of the connecting rope 32 exposed outside the mounting block 31. A plurality of structure grooves 331 are formed on the outer peripheral side of the nylon cloth piece 33, and all the structure grooves 331 are equidistantly distributed around the circular edge of the nylon cloth piece 33; the part of the nylon cloth piece 33 between every two adjacent structure grooves 331 forms a folding part 332, and each folding part 332 can be freely folded. A belt 34 is movably sleeved on the outer peripheral side of the connecting rope 32, and the belt 34 is located outside the heat preservation pad sleeve; an elastic cord 35 is connected between each folding part 332 and the belt 34, and the elastic cord 35 is selected as a rubber band. People can fold down all the folding parts 332 at one time by pulling the belt 34, so that the free end of the connecting rope 32 can conveniently pass through the perforation of the girdle; after the connecting rope 32 is threaded, loosen the belt 34 to make each folding part 332 reset and expand outwards. At this time, the folding part 332 can play a role in positioning the connecting rope 32 and reduce the occurrence of the situation that the connecting rope 32 retracts inwards.

[0050] Refer to Figure 5 , Figure 6 , a decorative piece 5 is provided at one end of the nylon cloth piece 33 away from the connecting rope 32. Cartoon patterns are printed on both side surfaces of the decorative piece 5, which can improve the interest of the sandal and cater to the preferences of children. The nylon cloth piece 33 and the decorative piece 5 are detachably connected through a connecting component. The connecting component includes an I-shaped buckle female buckle 333 and an I-shaped buckle male buckle 51. Among them, the I-shaped buckle female buckle 333 is fixed on the side of the nylon cloth piece 33 away from the connecting rope 32, and the I-shaped buckle male buckle 51 is fixed on one side surface of the decorative piece 5.

[0051] Refer to Figure 5 , Figure 6 , the sole 1 is also provided with a storage groove 13 for storing the decorative piece 5. In this embodiment, the storage groove 13 is located at the bottom of the installation groove 11, and the storage groove 13 extends outwards and communicates with the extension groove 12, so that the decorative piece 5 can be taken out of the storage groove 13 through the extension groove 12 after the plastic strip 6 is opened. At the same time, when the plastic strip 6 is embedded in the extension groove 12, it can play a role in fixing and hiding the unused decorative piece 5 and improve the aesthetics of the sandal. In other embodiments, the storage groove 13 can also be independently arranged and communicated with the outer side surface of the sole 1.

[0052] Refer to Figure 7 , the number of ventilation holes in this specification can be selected according to the actual design of the sandal; in this embodiment, the number of ventilation holes is set to five, one of which is located at the rear part of the shoe upper 2, and this ventilation hole is set as the second ventilation hole 23; the remaining ventilation holes are set as the first ventilation holes 21, and the four first ventilation holes 21 are symmetrically arranged in pairs on both side edges of the shoe upper 2.

[0053] Refer to Figure 7, each strap fixed inside the first ventilation hole 21 is set as the first strap 22. When the connecting rope 32 passes through each first strap 22, the connecting rope 32 can be horizontally passed through the two first straps 22 at the bottom, and then passed through two opposite first straps 22 upward in turn. Finally, the connecting rope 32 is horizontally arranged and covers the first ventilation hole 21.

[0054] Refer to Figure 7 , each strap fixed inside the second ventilation hole 23 is set as the second strap 24; a third strap 15 is also installed on the upper surface of the sole 1. Both sides of the extending direction of the third strap 15 are sewn and fixed to the sole 1, so that the third strap 15 can also form a perforation for the connecting rope 32 to pass through. When the connecting rope 32 passes through, the connecting rope 32 can be passed through between each vertically opposite first strap 22 and second strap 24 in turn. Finally, the connecting rope 32 is vertically arranged and covers the second ventilation hole 23, thus playing a good heat preservation effect and reducing the possibility of the child's feet getting cold.

[0055] The implementation principle of a pair of children's sandals with adjustable heat preservation effect in the embodiment of the present application is as follows:

[0056] When a child wears these sandals and goes out and encounters sudden rain, when a parent or the child applies a force to the plastic strip 6 of the sole 1, the plastic strip 6 can be partially pulled outwards, and then the connecting rope 32 exposed outside the mounting block 31 is pulled to unwind the connecting rope 32, and the connecting rope 32 is passed through the perforations of each strap in turn. Thus, the connecting rope 32 covers the ventilation holes, which can reduce the volume of air entering the inner side of the shoe upper 2 through the ventilation holes per unit time, plays a role in adjusting the heat preservation effect of the shoes, reduces the possibility of the feet getting cold when encountering sudden rain and the child does not change to warm shoes, and is beneficial to keeping the child in a healthy physical condition.

[0057] The above is the preferred embodiment of the present application. It does not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A children's sandal with adjustable heat preservation effect, comprising a sole (1) and an upper (2) fixed on the upper surface of the sole (1). A plurality of ventilation holes are provided at the side edge of the upper (2) close to the sole (1), and each of the ventilation holes is arranged at intervals along the outer peripheral side of the upper (2); it is characterized in that: A plurality of string-passing mechanisms (3) are embedded in the side edges of the sole (1), and each string-passing mechanism (3) is respectively arranged below each of the ventilation holes; the string-passing mechanism (3) includes a mounting block (31) embedded in the sole (1) and a connecting rope (32) wound inside the mounting block (31). One end of the connecting rope (32) is connected to the inside of the mounting block (31), and the other end of the connecting rope (32) passes through the mounting block (31) and is normally exposed outside the mounting block (31); a winding assembly (4) for normally winding the connecting rope (32) is provided between the connecting rope (32) and the mounting block (31). A plurality of straps are provided inside each ventilation hole, and all the straps are closely arranged along the inner peripheral wall of the ventilation hole. Each strap is formed with a perforation for the connecting rope (32) to pass through.

2. The children's sandal with adjustable heat preservation effect according to claim 1, characterized in that: A cavity for accommodating the connecting rope (32) is provided inside the mounting block (31). A partition plate (311) is installed inside the cavity. The cavity is divided by the partition plate (311) into a winding chamber (313) and an elastic chamber (314). One end of the connecting rope (32) located in the cavity is connected to the inner wall of the winding chamber (313). The winding assembly (4) includes a movable rod group (41), a limiting rod group, a moving block (43), and an elastic member. The movable rod group (41) is movably installed in the winding chamber (313), the moving block (43) is movably installed in the elastic chamber (314), the partition plate (311) is provided with a movable slot (312) penetrating through the upper and lower sides of the partition plate (311), and the movable rod group (41) passes through the movable slot (312) and is connected to the moving block (43); the limiting rod group is fixed in the winding chamber (313), and the connecting rope (32) is alternately wound between the movable rod group (41) and the limiting rod group; the elastic member is arranged between the moving block (43) and the inner wall of the elastic chamber (314), and the elastic member normally forces the movable rod group (41) to move in a direction away from the limiting rod group.

3. The children's sandal with adjustable heat preservation effect according to claim 2, characterized in that: The movable rod group (41) includes a connecting rod (412) and a plurality of movable rods (411). Each movable rod (411) is connected to the connecting rod (412). One end of the connecting rod (412) far from the movable rod (411) is connected to the moving block (43); the limiting rod group includes a plurality of limiting rods (42), and each limiting rod (42) is fixed to the inner wall of the winding chamber (313); the connecting rope (32) is alternately wound between the movable rod (411) and the limiting rod (42).

4. The children's sandal with adjustable heat preservation effect according to claim 1, characterized in that: One end of the connecting rope (32) exposed outside the mounting block (31) is connected with a nylon cloth piece (33). A plurality of structure grooves (331) are arranged on the outer peripheral side of the nylon cloth piece (33). The part of the nylon cloth piece (33) between every two adjacent structure grooves (331) forms a folding part (332).

5. The children's sandal with adjustable heat preservation effect according to claim 4, characterized in that: Each folding part (332) is connected with an elastic cord (35). One ends of all the elastic cords (35) far from the folding parts (332) are commonly connected with a sleeve band (34), and the sleeve band (34) is movably sleeved on the outer side of the connecting rope (32).

6. The children's sandal with adjustable heat preservation effect according to claim 4, characterized in that: One end of the nylon cloth piece (33) away from the connecting rope (32) is provided with a decorative piece (5), and the decorative piece (5) is detachably connected to the nylon cloth piece (33) through a connecting component; a storage groove (13) is formed in the sole (1), and the decorative piece (5) is normally stored in the storage groove (13).

7. The children's sandal with adjustable heat preservation effect according to any one of claims 1-6, characterized in that: The breathable holes located at the front part of the shoe upper (2) are set as the first breathable holes (21), and the straps fixed on the inner peripheral wall of the first breathable holes (21) are set as the first straps (22); the connecting rope (32) is horizontally and staggeredly threaded through each of the first straps (22). The breathable holes located at the rear part of the shoe upper (2) are set as the second breathable holes (23), and the straps fixed on the inner peripheral wall of the second breathable holes (23) are set as the second straps (24); a third strap (15) is further installed on the upper surface of the sole (1), and the third strap (15) is located at the edge of the heel part of the sole (1); the connecting rope (32) is vertically and staggeredly threaded between the second strap (24) and the third strap (15).

8. The children's sandal with adjustable heat preservation effect according to claim 1, characterized in that: An installation groove (11) for installing a string-passing mechanism (3) is formed in the outer peripheral wall of the sole (1), a plastic strip (6) for covering all the string-passing mechanisms (3) is provided at the notch of the installation groove (11), one side in the extending direction of the plastic strip (6) is fixed to the sole (1), and the other side in the extending direction of the plastic strip (6) is detachably installed on the sole (1) through a connecting structure.

9. The children's sandal with adjustable heat preservation effect according to claim 8, characterized in that: An extension groove (12) is formed in the side wall of the notch of the installation groove (11), the width of the extension groove (12) is greater than the width of the installation groove (11), and the plastic strip (6) is fitted and installed in the extension groove (12); the connecting structure includes a plurality of insertion posts (61) fixed to the plastic strip (6) and a plurality of insertion slots (14) formed in the extension groove (12), and each of the insertion posts (61) is respectively inserted into each of the insertion slots (14); an interference fit is provided between each insertion post (61) and the insertion slot (14).

10. The children's sandal with adjustable heat preservation effect according to claim 1, characterized in that: A heat preservation cushion sleeve is sleeved on the outer peripheral side of the connecting rope (32).

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