Inner boot structure of ski boot

Abstract

The inner boot structure comprises a boot sole, a boot body and a boot leg which are made of flexible materials, and the boot sole, the boot body and the boot leg jointly form an inner boot body for containing the foot and the leg. The front ends of the boot body and the boot leg are provided with openings extending from the arch to the top end of the boot leg, and the front ends of the openings are connected with the shoe tongue. A U-shaped tensioning sleeve and a shoe tongue tensioning piece are additionally arranged on the inner boot structure, the U-shaped tensioning sleeve covers the ankle portion from the rear end of the boot body and is fixed to the boot body and the boot leg in an adhesive mode, and the shoe tongue tensioning piece is attached to the outer side of the shoe tongue. An interlayer and a glue injection hole are arranged in the U-shaped tensioning sleeve and the shoe tongue tensioning piece, glue is injected to enable the U-shaped tensioning sleeve and the shoe tongue tensioning piece to expand, the boot body, the boot leg and the shoe tongue are pressed to deform, the U-shaped tensioning sleeve and the shoe tongue tensioning piece are attached to the ankle, the foot body and the arch of a user in a self-adaptive mode, and finally sizing is achieved through glue solidification. 3D modeling and mold customization are not needed, personalized adaptation is achieved through the controllable glue injection amount, the attaching effect is effectively improved, the cost is low, and different user requirements are met.

Description

Technical Field

[0001] This application relates to the technical field of ice and snow sports equipment, and more specifically, it relates to the inner boot structure of a ski boot. Background Technology

[0002] Ski boots are professional footwear designed specifically for skiing. Their core function is to connect the skier to the skis, providing precise control, foot support, and warmth. In skiing, the fit between the foot and leg and the ski boot directly affects the efficiency of power transmission, control precision, and safety.

[0003] Ski boots typically consist of an outer boot and an inner boot. The outer boot is made of high-strength plastic or carbon fiber, providing rigidity and resistance to deformation, and can withstand the enormous torsional forces during skiing. The inner boot, located inside the outer boot, is made of flexible material to provide a flexible wrap around the foot and leg, making it more comfortable for the user. Pressure is applied to the inner boot through closure devices such as metal buckles or knobs, which are then transferred to the inner boot, forcing it to be securely fastened to the foot and leg for a stable fit. However, due to significant individual differences in the human foot, especially in the ankle and arch areas, the inner boot is usually designed based on the "average foot shape of most people," making it difficult to achieve a good fit for feet that deviate from this standard. Utility Model Content

[0004] To address the issue that inner boots are typically designed based on the "average foot shape of most people," making it difficult to achieve a good fit for feet that deviate from the reference, this application provides an inner boot structure for ski boots.

[0005] An inner boot structure for a ski boot includes a sole, a boot body disposed on the upper side of the sole for accommodating the foot, and a boot shaft disposed on the upper side of the boot body for accommodating the leg. The sole, boot body, and boot shaft are all made of flexible material. The front ends of the boot body and the boot shaft are provided with an opening, which extends from the corresponding arch portion to the top of the boot shaft. A tongue is connected to the front end of the opening on the boot body.

[0006] It also includes a U-shaped tensioning sleeve and a shoe tongue tensioning piece. The U-shaped tensioning sleeve is inserted into the outside of the boot body from the rear end of the boot body and fits against the opposite sides of the boot body. The U-shaped tensioning sleeve has an upward extension that extends to the boot shaft so that the U-shaped tensioning sleeve covers the ankle area. The boot body and boot shaft are glued to the U-shaped tensioning sleeve. The shoe tongue tensioning piece is glued to the outer side of the shoe tongue and matches the shape of the outer side of the shoe tongue. Both the U-shaped tensioning sleeve and the shoe tongue tensioning piece are provided with an internal interlayer and have glue injection holes that connect to the interlayer. Both the U-shaped tensioning sleeve and the shoe tongue are made of deformable material.

[0007] Preferably, the boot sole, boot body, and boot shaft are integrally molded from EVA material.

[0008] Preferably, the U-shaped tensioning sleeve is made of EVA material, and the shoe tongue tensioning piece is made of TPU material.

[0009] Preferably, the boot body and the boot shaft are both provided with a first groove corresponding to the U-shaped tensioning sleeve for accommodating the U-shaped tensioning sleeve.

[0010] Preferably, the tongue includes a tongue body and a connecting piece disposed at the front end of the tongue body, the shoe body has a second groove recessed at the front end of the opening and the second groove communicates with the opening, and the connecting piece is inserted into the second groove and glued to the shoe body.

[0011] Preferably, a pressure bridge is provided at the connection between the second groove and the opening on the boot body.

[0012] The beneficial technical effects of this application are as follows: The interlayer design of the U-shaped tensioning sleeve and the tongue tensioning piece allows for the placement of adhesive. Adhesive is injected into the interlayer through the injection hole, causing the U-shaped tensioning sleeve and the tongue tensioning piece to expand. Before injection, the inner boot is first inserted into the user's foot and leg. Then, adhesive is injected into the U-shaped tensioning sleeve and the tongue tensioning piece. The expanded U-shaped tensioning sleeve compresses and deforms the corresponding ankle and side parts of the boot body and boot shaft, resulting in a better fit to the ankle and side parts of the foot. The adhesive solidifies to achieve the shaping of the boot body and boot shaft. Similarly, the expanded tongue tensioning piece compresses and deforms the tongue, resulting in a better fit to the user's arch and other areas. The adhesive solidifies to achieve the shaping of the tongue. By controlling the amount of adhesive injected into the interlayer, customization can be achieved for different users. Customization does not require the creation of 3D models or targeted mold making, resulting in lower costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the inner boot structure of a ski boot according to this embodiment.

[0014] Figure 2 This is an exploded view of the inner boot structure of a ski boot according to this embodiment.

[0015] Figure 3 This is a partial cross-sectional view of the U-shaped tensioning sleeve in this embodiment.

[0016] Figure 4 This is a partial cross-sectional view of the shoe tongue tensioner in this embodiment.

[0017] Reference numerals: 1. Boot sole; 2. Boot body; 3. Boot shaft; 4. U-shaped tensioning sleeve; 5. Extension section; 6. Tongue tensioning piece; 7. Opening; 8. Interlayer; 9. Injection hole; 10. First groove; 11. Tongue body; 12. Connecting piece; 13. Second groove; 14. Pressure bridge; 15. Guide tube. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] Reference Figure 1 , Figure 3 and Figure 4 An inner boot structure for a ski boot includes a sole 1, a boot body 2, a boot shaft 3, a U-shaped tensioning sleeve 4, and a tongue tensioning piece 6. The boot body 2 is located on the upper side of the sole to accommodate the foot, and the boot shaft 3 is located on the upper side of the boot body 2 to accommodate the leg. The sole 1, boot body 2, and boot shaft 3 are integrally molded from EVA material, which has low density, is lightweight, and has excellent cushioning performance, making the inner boot comfortable, easy to deform, and able to cover the foot and leg. The front ends of the boot body 2 and the boot shaft 3 share an opening 7, which extends from the corresponding arch area to the top of the boot shaft 3. The boot body 2 is connected to the top of the opening 7, and the tongue is located on the inner side of the boot body and boot shaft 3, covering the top surface of the foot, the arch area, and the front of the leg. The U-shaped tensioning sleeve 4 is inserted into the outer side of the boot body 2 from the rear end of the boot body 2 and fits against the opposite sides of the boot body 2. The U-shaped tensioning sleeve 4 has an upward extension portion 5 that extends to the boot shaft 3. The sleeve 3 allows the U-shaped tensioning sleeve 4 to cover the ankle area. The boot body 2 and boot shaft 3 are glued to the U-shaped tensioning sleeve 4. The tongue tensioning piece 6 is glued to the outer side of the tongue and matches the shape of the outer side of the tongue. Both the U-shaped tensioning sleeve 4 and the tongue tensioning piece 6 are provided with an internal interlayer 8 and an injection hole 9 that connects to the interlayer 8. The U-shaped tensioning sleeve 4 is made of EVA material and has the characteristics of compression deformation. The tongue tensioning piece 6 is made of TPU material and has the characteristics of compression deformation and good support. Glue is injected into the clamp through the injection hole 9, so that the glue expands the U-shaped tensioning sleeve 4 and the tongue tensioning piece 6. The expansion of the U-shaped tensioning sleeve 4 compresses the corresponding parts of the boot body 2 and boot shaft 3, causing the corresponding parts to deform. The expansion of the tongue tensioning piece 6 compresses the tongue, causing the tongue to deform accordingly. The tongue tensioning piece 6 also supports the tongue, making it less prone to bending or wrinkling.

[0020] Reference Figure 2Furthermore, the boot body 2 and boot shaft 3 are both recessed with a first groove 10 for accommodating the U-shaped tension sleeve 4. By setting the first groove 10, the thickness of the corresponding part of the boot body 2 and boot shaft 3 is reduced while maintaining the thickness of other parts to achieve good support shape. This makes it easier to deform in the corresponding part. In addition, the first groove 10 is used to accommodate the U-shaped tension sleeve 4 to prevent the edge of the U-shaped tension sleeve 4 from being exposed, making the inner boot more beautiful overall and less likely to be scraped off by external objects.

[0021] Reference Figure 2 Furthermore, the shoe tongue includes a shoe tongue body 11 and a connecting piece 12 disposed at the front end of the shoe tongue body 11. A second groove 13 is recessed at the front end of the shoe body and the opening 7. The second groove 13 communicates with the opening 7. The connecting piece 12 is inserted into the second groove 13 and glued to the shoe body to achieve the connection and fixation between the shoe tongue and the shoe body. The setting of the second groove 13 to accommodate the connecting piece 12 achieves the hiding of the edge of the connecting piece 12, making the connecting piece 12 less likely to be scraped off by external objects, while making the inner boot look beautiful overall.

[0022] Reference Figure 2 Furthermore, a pressure bridge 14 is provided at the connection between the second groove 13 and the opening 7 on the boot body 2. The connecting piece 12 is inserted into the second groove 13 from below the pressure bridge 14 and glued to the boot body 2. When the shoe tongue is moved, the pressure bridge 14 presses against the connecting piece 12, restricting the swing of the shoe tongue body 11 from affecting the connecting piece 12, reducing the risk that the connecting piece 12 will be broken off from the boot body 2 and the connection between the shoe tongue and the boot body 2 will fail.

[0023] Reference Figure 2 Furthermore, the U-shaped tension sleeve 4 is provided with three injection holes 9, which are arranged at the bottom end and opposite sides of the U-shaped tension sleeve 4 respectively. The three injection holes 9 enable simultaneous injection of glue at three parts of the U-shaped tension sleeve 4, which is more efficient and reduces the possibility of injection failure due to the glue curing efficiency not keeping up with the glue curing efficiency. The shoe tongue tension piece 6 has one injection hole 9, which is located in the middle.

[0024] Reference Figure 2 Furthermore, both the U-shaped tensioning sleeve 4 and the tongue tensioning piece 6 are connected to a conduit 15 at the glue injection hole 9. The conduit 15 connects to the glue injection gun and guides the glue flow, eliminating the need for the glue gun tip to penetrate into the interlayer 8, which helps reduce the possibility of glue back-sticking. After glue injection, the conduit 15 should be cut off to prevent it from interfering with wearing.

[0025] The implementation principle of the inner boot structure of a ski boot disclosed in this application is as follows: The inner boot is inserted into the user's foot and leg. Glue is injected into the U-shaped tensioning sleeve 4 and the tongue tensioning piece 6. The expanded U-shaped tensioning sleeve 4 compresses and deforms the corresponding ankle and side parts of the boot body 2 and boot shaft 3, resulting in a better fit to the ankle and side parts of the foot. The boot body 2 and boot shaft 3 are then shaped through glue curing. Similarly, the expanded tongue tensioning piece 6 compresses and deforms the tongue, ensuring a better fit to the user's arch and other areas. The tongue is then shaped through glue curing. By controlling the amount of glue injected into the interlayer 8, customization can be achieved for different users without requiring 3D modeling or custom mold making, thus reducing costs.

[0026] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inner boot structure for a ski boot, characterized in that: The boot includes a sole, a boot body located on the upper side of the sole for accommodating the foot, and a boot shaft located on the upper side of the boot body for accommodating the leg. The sole, boot body, and boot shaft are all made of flexible material. The front ends of the boot body and the boot shaft are provided with an opening that extends from the corresponding arch portion to the top of the boot shaft. A shoe tongue is connected to the front end of the opening on the boot body. It also includes a U-shaped tensioning sleeve and a shoe tongue tensioning piece. The U-shaped tensioning sleeve is inserted into the outside of the boot body from the rear end of the boot body and fits against the opposite sides of the boot body. The U-shaped tensioning sleeve has an upward extension that extends to the boot shaft so that the U-shaped tensioning sleeve covers the ankle area. The boot body and boot shaft are glued to the U-shaped tensioning sleeve. The shoe tongue tensioning piece is glued to the outer side of the shoe tongue and matches the shape of the outer side of the shoe tongue. Both the U-shaped tensioning sleeve and the shoe tongue tensioning piece are provided with an internal interlayer and have glue injection holes that connect to the interlayer. Both the U-shaped tensioning sleeve and the shoe tongue are made of deformable material.

2. The inner boot structure of a ski boot according to claim 1, characterized in that: The sole, body, and shaft of the boot are integrally molded from EVA material.

3. The inner boot structure of a ski boot according to claim 1, characterized in that: The U-shaped tensioning sleeve is made of EVA material, and the shoe tongue tensioning piece is made of TPU material.

4. The inner boot structure of a ski boot according to claim 1, characterized in that: The boot body and the boot shaft are both recessed in a first groove corresponding to the U-shaped tensioning sleeve to accommodate the U-shaped tensioning sleeve.

5. The inner boot structure of a ski boot according to claim 1, characterized in that: The shoe tongue includes a shoe tongue body and a connecting piece disposed at the front end of the shoe tongue body. The boot body has a second groove recessed at the front end of the opening and the second groove communicates with the opening. The connecting piece is inserted into the second groove and glued to the boot body.

6. The inner boot structure of a ski boot according to claim 5, characterized in that: A pressure bridge is provided at the connection between the second groove and the opening on the boot body.

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