Detachable automatic tightening shoe tightener

Abstract

The present apparatus and related methods relate to a hand-free rotating shoelace tightening apparatus (RSTD) that adjusts the tension of a shoelace by rotating a wheel on the ground. In one example, the RSTD may include a base module permanently attached to a proximal end of a heel along a longitudinal axis of the shoe. For example, the base module may include an opening at the proximal end of the shoe. The RSTD may include, for example, a rotating assembly that can be removably coupled into the opening of the base module. The rotating assembly may include a wheel. The rotating assembly may include a shaft coupled by a hub. For example, in the assembled state, the rotating assembly can be detachably locked in a cavity defined by the base module and the lock module. Various embodiments may advantageously provide a replaceable component of a rotating assembly.

Description

Cross - Reference to Related Applications

[0001] This application claims priority to U.S. Provisional Application No. 63 / 584,704, titled "Detachable Automatic Shoelace Tightener", filed by Gregory Johnson on September 22, 2023.

[0002] This application incorporates the entire content of the above - mentioned application by reference.

[0003] The subject matter of this application may have common inventors and / or be closely related to the following: · U.S. Patent Application No. 13 / 584,468, titled "Automatically Tightening Shoes", filed by Gregory Glenn Johnson et al. on August 13, 2012, and published as U.S. Patent No. 8,904,673 on December 9, 2014; · U.S. Patent Application No. 10 / 732,664, titled "Automatically Tightening Shoes", filed by Gregory Glenn Johnson on December 9, 2003; · U.S. Patent Application No. 10 / 093,918, titled "Automatically Tightening Shoes", filed by Gregory Glenn Johnson on March 7, 2002, and published as U.S. Patent No. 6,896,128; · U.S. Patent Application No. 09 / 675,607, titled "Automatically Tightening Shoes", filed by Gregory Glenn Johnson on September 29, 2000, and published as U.S. Patent No. 6,467,194; · U.S. Patent Application No. 09 / 288,476, titled "Automatic Shoelace Tightening and Loosening Device", filed by Gregory Glenn Johnson on April 8, 1999, and published as U.S. Patent No. 6,032,387; · U.S. Patent Application No. 11 / 212,283, titled "Tightening Shoes", filed by Gregory Glenn Johnson et al. on August 26, 2005, and published as U.S. Patent No. 7,721,468; · U.S. Patent Application No. 13 / 199,078, titled "Automatically Tightening Shoes", filed by Gregory Glenn Johnson on August 18, 2011, and published as U.S. Patent No. 8,904,672; · U.S. Patent Application No. 12 / 004,895, titled "Automatically Tightening Shoes", filed by Gregory Glenn Johnson Filed on December 21, 2007, and published as U.S. Patent No. 7,676,957; · U.S. Patent Application No. 11 / 818,370, titled "Automatically Tightening Shoe", by Gregory Glenn Johnson Filed on June 14, 2007, and published as U.S. Patent No. 7,661,205; · U.S. Patent Application No. 17 / 935,371, titled "Shoelace Tightening System", by Gregory Glenn Johnson Filed on September 26, 2022; and · U.S. Patent Application No. 18 / 321,886, titled "One-Handed Shoelace Tightening System", by Gregory Glenn Johnson, filed on May 23, 2023.

[0004] This application incorporates by reference the entire contents of the above applications herein. Technical Field

[0005] Embodiments generally relate to a detachable hands-free tightening system for shoelace fixation. Background Art

[0006] Shoes, as essential clothing, provide protection, support, and style to people of various cultures and generations. Early civilizations used natural materials such as leather, plant fibers, and animal skins to make simple shoes. Today, the design and manufacturing methods of shoes may cover a variety of styles, shapes, and functions.

[0007] For example, the methods of fixing shoes to the user's feet have evolved. In many examples, footwear may include mechanisms to ensure a snug and comfortable fit for users with different foot sizes. Among them, some mechanisms use shoelaces or cords. For example, shoelaces may be flexible cords (such as those made of cotton, nylon, or other synthetic materials), and for example, the flexible cords can pass through a pair of eyelets and / or loops embedded on both sides of the shoe upper. By tightening and tying knots, the user can adjust the tension around the foot. For example, the adjustable tension can provide a personalized fit suitable for their comfort and performance needs.

[0008] Shoelaces are often used in footwear fixation due to their simple structure, high reliability, and strong adaptability. For example, their simple design is suitable for various foot shapes and sizes. Summary of the Invention

[0009] The present device and related methods relate to a rotation - free shoelace tightening device (RSTD) that adjusts the tension of the shoelaces by rotating a wheel on the ground. In one example, the RSTD may include a base module permanently fixed to the heel of the shoe at the proximal end of the longitudinal axis of the shoe edge. For example, the base module may include an opening located at the proximal end of the shoe. The RSTD may also include a rotating assembly configured to be releasably coupled to the opening of the base module. The rotating assembly may include a wheel; also, the rotating assembly may include a shaft connected to the wheel through a hub. In the assembled state, the rotating assembly can be releasably locked within a cavity defined by the base module and a locking module. Various embodiments can advantageously provide replaceable components of the rotating assembly.

[0010] The present device and related methods relate to a rotation - free shoelace tightening device (RSTD) that adjusts the tension of the shoelaces by rotating a wheel on the ground. In one example, the RSTD may include a base module permanently fixed to the heel of the shoe at the proximal end of the longitudinal axis of the shoe edge. For example, the base module may include a cavity configured to receive the shoelaces of the shoe; the base module may include: a first hole that communicates with the cavity and is provided on the bottom surface of the base module, defining a first cavity; and a second hole that communicates with the cavity and is provided on the side surface of the base module, defining a second cavity. For example, the first cavity can receive the wheel in the assembled state, while the second cavity can receive the shaft in the assembled state. During the assembly process, the wheel is first inserted into the first cavity, and then the shaft is inserted into the second cavity. Various embodiments can advantageously provide a quick - installation mechanism between the wheel and the shaft.

[0011] The present device and related methods also relate to a rotation - free shoelace tightening device (RSTD) that adjusts the tension of the shoelaces by rotating a wheel on the ground. In one example, the RSTD may include an attachment base provided at the proximal end of the longitudinal axis of the shoe edge. For example, the RSTD may also include a rotating assembly provided below the attachment base. For example, the rotating assembly may include a rotatable wheel. For example, the rotating assembly may also include a shaft assembly coupled to the hub of the rotatable wheel. For example, the shaft assembly is configured to receive the shoelaces of the shoe. For example, the rotatable wheel is coupled to an integral housing at the bottom surface and the proximal end of the shoe. For example, the shaft assembly is releasably coupled to the attachment base through two coupling features (e.g., screws).

[0012] The present device and related methods also relate to a hands-free rotational shoelace tightening device (RSTD) that adjusts the tension of a shoelace by rotating a wheel on the ground. In one example, the RSTD may include a shaft assembly configured to receive a shoelace. For example, the shaft assembly may include a rotatable wheel and a shaft rod configured to receive the shoelace. For example, the RSTD may include a base module permanently fixed to the proximal end of the heel along the longitudinal axis of the shoe. For example, the base module may include a top-loading cavity configured to receive the shaft assembly. For example, the RSTD may also include a bottom opening leading to the cavity that exposes the rotatable wheel at the bottom of the base module after the shaft assembly is received into the top-loading cavity.

[0013] Various embodiments may achieve one or more advantages. For example, certain embodiments may advantageously provide modular, replaceable shaft assembly units.

[0014] Details of various embodiments are set forth in the accompanying drawings and the description below. Other features and advantages will be apparent from the description, the drawings, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An example of a detachable hands-free shoelace tightener (DHFST) used in an exemplary use case scenario is described.

[0016] Figure 2A , Figure 2B , Figure 2C and Figure 2D Show exemplary installation steps for mounting an exemplary back-loaded DHFST to a shoe.

[0017] Figure 3A , Figure 3B and Figure 3C Are schematic diagrams depicting an exemplary latch module of a back-loaded DHFST.

[0018] Figure 4A , Figure 4B and Figure 4C Are exemplary installation steps for a side-loaded DHFST.

[0019] Figure 5A , Figure 5B , Figure 5C , Figure 5D and Figure 5E Are schematic diagrams depicting the various components of a side-loaded DHFST.

[0020] Figure 6A and Figure 6B Are exemplary installation steps for mounting a coupler-mounted DHFST to a shoe.

[0021] Figure 7 A and Figure 7B describes various components for mounting a coupler-mounted DHFST to a shoe.

[0022] Figure 8A and Figure 8B shows an exemplary installation procedure for mounting a top-loading DHFST to a shoe.

[0023] Figure 9 is an assembly drawing depicting various components of a bearing-operated DHFST.

[0024] Figure 10A and Figure 10B is an assembly drawing depicting an exemplary bushing-operated DHFST.

[0025] Reference numerals in the various figures denote the same elements. DETAILED DESCRIPTION

[0026] For ease of understanding, the organization of this document is as follows. First, for ease of discussing the various embodiments, reference Figure 1 is made to introduce various exemplary embodiments of a detachable hands-free shoelace tightener (DHFST). Second, this introduction leads to a reference Figures 2A - 3C to a description of some exemplary embodiments of a back-loading DHFST. Third, with reference to Figures 4A - 5E , the application of a shoe in a side-loading DHFST is described. Fourth, with reference to Figures 6A - 7 B, a turn is made to exemplary embodiments that illustrate various coupling mechanisms applicable to some embodiments of mounting a DHFST. Fifth, with reference to Figure 8A -B, exemplary implementations of a top-loading DHFST are described herein. Sixth, this disclosure turns to a schematic review and discussion of the shaft components applied in the exemplary DHFSTs of Figures 9 - 10B . Finally, this document discusses further embodiments, exemplary applications, and aspects related to DHFSTs.

[0027] Figure 1 Describes an exemplary detachable hands-free shoelace tightener (DHFST) used in an exemplary use case scenario. In this example, user 105 is wearing a foot-driven shoelace tightening shoe (FASTS110).

[0028] In scenario 100, FASTS110 includes shoelaces 115. For example, user 105 can use shoelaces 115 to adjust the size of FASTS110. DHFST 120 is disposed proximal to FASTS110. In some implementations, shoelaces 115 are mechanically coupled to DHFST 120.

[0029] In this embodiment, the DHFST 120 includes a shaft assembly 125. For example, the shaft assembly 125 can be mechanically coupled to the shoelace 115. For example, the shaft assembly 125 can be configured to control the length of the shoelace 115 wound around the shaft assembly 125. For example, by reducing the length of the shoelace 115 extending from the shaft assembly 125, the shaft assembly 125 can effectively control the tension of the shoelace 115. In certain embodiments, the user 105 can adjust the tension to accommodate the user 105's foot.

[0030] In this embodiment, the user 105 can drive the shaft assembly 125 by rolling the proximal end (e.g., the heel) of the FASTS 110 to tighten the shoelace 115. In certain embodiments, the shaft assembly 125 can include a rotatable wheel 150 located at the proximal end of the longitudinal axis. In this embodiment, the rotatable wheel 150 protrudes from the proximal end of the FASTS 110 and is located at the proximal end of the bottom side of the FASTS 110. For example, as shown by arrow 130, the user 105 can tighten the shoelace 115 by rubbing the shaft assembly 125 against a surface (e.g., the ground).

[0031] For example, the rotatable wheel 150 can be configured to wind or unwind the shoelace 115. For example, the user can rotate the shaft assembly 125 in a first direction (e.g., clockwise, counterclockwise, forward, backward) to tighten the shoelace 115 and rotate the shaft assembly 125 in a second direction (e.g., opposite to the first direction) to loosen the shoelace 115. In certain embodiments, the shaft assembly 125 can include a knob or handle to facilitate rotation by the user. In certain embodiments, the shaft assembly 125 can include a quick release button to loosen the shoelace 115. In certain embodiments, the rotatable wheel 150 can be a ratchet configured to rotate only in the first direction.

[0032] In various implementations, the DHFST 120 may be releasably coupled to the FASTS 110. As shown, the DHFST 120 may include a piggyback module 135A configured to couple to a static module at the proximal end of the FASTS 110. In certain embodiments, the DHFST 120 may include a side module 135B configured to couple to the static module and shaft assembly 125 from a side of the FASTS 110. In certain examples, the DHFST 120 may include a fixing unit 135C configured to couple the releasable module to the static module at the proximal end of the FASTS 110 using one or more connection assemblies. In certain embodiments, the DHFST 120 may include a top-loading unit 135D configured to couple to the static module from the top of the proximal sole of the FASTS 110. In certain embodiments, the DHFST 120 may include a top-loading unit 135D configured to couple to the static module from the top of the proximal sole of the FASTS 110. In some embodiments, the shaft assembly 125 can include a bushing mechanism 140 configured to drive a rotational assembly 145 of the shaft assembly 125 .

[0033] Various embodiments may advantageously provide for a replaceable rotating assembly of the shaft assembly 125. For example, the rotating assembly may be subject to the most wear (e.g., due to the drive indicated by arrow 130). In certain embodiments, the replacement function may advantageously provide a "skinning" function for the user 105. For example, the user 105 may selectively replace the back-mounted module 135A with a different color and / or pattern to enhance the personality of the FASTS 110.

[0034] Figure 2A , Figure 2B , Figure 2C and Figure 2D An exemplary installation procedure for installing an exemplary piggyback DHFST (BDHFST) into a shoe is shown. Figure 2A As shown, the BDHFST 200 includes a base module 205 permanently connected to the heel 210 (e.g., at the proximal end of the longitudinal axis). The base module 205 can be permanently connected to the heel 210 in various ways. In some embodiments, the base module 205 can be configured to be fixedly connected to the heel 210 using an adhesive material (e.g., glue, tape, Velcro). In some embodiments, the base module 205 can be configured to be fixed to the heel 210 using a mechanical connection (e.g., screws, nails, clips). In some embodiments, the base module 205 can be configured to be integrated with the heel 210 using a molding process such as injection molding, compression molding, or thermoforming. In some embodiments, the base module 205 can be configured to be sutured with the heel 210 using thread, silk, rope, or other suture materials.

[0035] As shown, the shaft assembly 125 is coupled to the shoelaces 115 of the shoe. For example, each of the shoelaces 115 is removably coupled to the coupling feature 230 of the shaft assembly 125. For example, the coupling features 230 may be disposed at both ends of the shaft of the shaft assembly 125. As an illustrative example, the shaft assembly 125 may be configured to tighten the shoelaces 115 by rotating in a first direction. For example, the shaft assembly 125 may have a threaded surface that engages the corresponding shoelace (shoelace 115). For example, when the shaft assembly 125 rotates, the shaft assembly 125 may wind the shoelace 115 around the shaft to reduce the length of the shoelace 115 outside the BDHFST 200, thereby tightening the shoelace 115.

[0036] In some embodiments, the shaft assembly 125 may also be configured to loosen the shoelaces 115 by rotating in a second direction opposite to the first direction. For example, the shaft assembly 125 may have a release mechanism that disengages the threads on the shoelace 115 when rotated in the second direction. When the shaft assembly 125 rotates, it may unwind the shoelace 115 from the shaft assembly 125, thereby loosening it.

[0037] In some embodiments, the shaft assembly 125 may include a ratchet. For example, the ratchet may be configured to limit the direction of rotation of the shaft assembly 125. For example, the ratchet may limit the shaft assembly 125 to rotate only in the tightening direction of the shoelace 115. For example, the BDHFST 200 may include another lacing mechanism (e.g., a tension release button) to relax the tension of the shoelace 115.

[0038] The lock module 215 includes a first component 220 and a second component 225. For example, the lock module 215 may be configured to slide into the cavity 235 of the base module 205, as Figure 2B shown. For example, after the shaft assembly 125 is installed in the cavity 235 of the base module 205, the lock module 215 may fix the shaft assembly 125 in the cavity of the base module 205. The first component 220 and the second component 225 may be made of a metallic material (e.g., steel, aluminum, titanium). The first part 220 and the second part 225 may include plastics (e.g., polyethylene, polypropylene, polycarbonate).

[0039] As shown, the first part 220 and the second part 225 may be coupled together to form the two jaws of a double clamp. For example, the first component 220 and the second component 225 may be configured to snap together or separate using a locking mechanism (e.g., a spring lock, a magnet, a hook). After the first component 220 and the second component 225 are coupled, the lock module 215 may connect the shaft assembly 125 and the base module 205. For example, the connection between the lock module 215, the shaft assembly 125, and the base module 205 may fix the relative positions of the BDHFST 200 at the heel.

[0040] In some implementations, the lock module 215 can be configured to provide an electrical connection between the base modules 205. For example, the lock module 215 can have contacts or wires (e.g., providing electronic functionality) that connect to corresponding contacts or wires on the base module 205. In some implementations, the lock module 215 can be configured to transmit and / or receive power and data with the base module 205. As an illustrative example, the base module 205 can be coupled to a battery. For example, the lock module 215 can be connected to a microcontroller and / or a communication module.

[0041] As Figure 2B shown, the shaft assembly 125 is slidably coupled into the cavity 235. For example, the user 105 can slide the shaft assembly 125 from the proximal end of the shoe towards the distal end of the shoe, causing it to enter the opening of the cavity 235. Thereafter, for example, the user 105 can pull on the shoelace 115 to securely fix the shaft assembly 125 within the cavity 235. As shown, the FASTS 110 has a width W along the lateral axis. For example, the rotatable wheel 150 of the BDHFST 200 can be disposed at the center of the lateral axis of the FASTS 110. For example, the shaft assembly 125 can be connected to the rotatable wheel 150 through the hub of the rotatable wheel 150.

[0042] As Figure 2C shown, the first component 220 and the second component 225 are combined together to form the lock module 215. For example, the lock module 215 can be locked (e.g., clamped) onto the shaft 240 of the shaft assembly 125 (as Figure 2B shown). For example, the lock module 215 can be configured to be releasably coupled to the shaft assembly 125. In some embodiments, the lock module 215 can include locking features (e.g., a ring extending from the top surface of the cavity 235) that mate with features of the base module 205 to fix the position of the lock module 215 relative to the base module 205. Thus, for example, the lock module 215 can advantageously couple the shaft assembly 125 to the base module 205. The various features of the lock module 215 are described in the following Figure 3A -C.

[0043] In this embodiment, the first component 220 includes locking features 250 located on the top surface of the first component 220. For example, the locking features 250 can be configured to engage with the mating features 255 of the base module 205 after being assembled with the base module 205 (as Figure 2D shown). For example, the locking features 250 and the mating features 255 can securely hold the shaft assembly 125 and the lock module 215 within the cavity 235.

[0044] As Figure 2D shown in 2D as shown, after the lock module 215 is installed onto the base module 205, the shaft assembly 125 includes a hole (as referenced Figure 3A-C), the hole is configured to allow the rotatable wheel 150 of the shaft assembly 125 to extend from the bottom of the heel of the FASTS 110. For example, the user 105 can rotate the rotatable wheel 150 against the surface 245 to tighten the shoelace 115 in a first direction. For example, the user 105 can rotate the rotatable wheel 150 against the surface 245 to loosen the shoelace 115 in a second direction.

[0045] In various implementations, an automatic shoelace tightening device (eg, BDHFST 200) may include a shaft assembly having a rotatable wheel and a shaft defining an axis of rotation. For example, the shaft assembly may be driven to tighten and loosen shoelaces of a shoe.

[0046] For example, the automatic shoelace tightening device may include a lock module (e.g., lock module 215) configured to be slidably and releasably connected to an accessory base (e.g., base module 205) permanently connected to the heel (e.g., FASTS110) from the distal end to the proximal end of the shoe. For example, the lock module may include a first engagement component (e.g., locking feature 250) configured to releasably engage a coupling feature (e.g., mating feature 255) of the accessory base. For example, the lock module may also include a second engagement component (axle hook 260) configured to engage with the shaft assembly around a rotation axis. For example, when the lock module is engaged with the connection base, (1) the first engagement component is coupled to the connection base, and (2) the second engagement component is coupled to the shaft assembly so that the shaft assembly is releasably locked in the connection base.

[0047] Figure 3A , Figure 3B and Figure 3C is a schematic diagram depicting an exemplary latch module of an exemplary piggyback DHFST. Figure 3A -B shows an exemplary rear module 300 in two views. For example, the rear module 300 can be installed at the heel of the FASTS 110. For example, the rear module 300 can be configured to be removably connected to the base module 205. Figure 3A In the example shown, the rear module 300 includes a locking feature 250 that is configured to engage with an engagement feature 255 of the base module 205 .

[0048] The rear module 300 also includes a shaft hook 260. For example, the shaft hook 260 can be configured to engage the shaft of the shaft assembly 125 in the cavity 235. For example, the shaft hook 260 can fix the position of the shaft assembly 125 in the cavity 235.

[0049] In this embodiment, the rear module 300 includes a second locking feature 310. In some implementations, the second locking feature 310 may be configured to engage with a second mating feature of the base module 205. For example, the second locking feature 310 and the second mating feature may be configured to ensure the relative position of the rear module 300 and the base module 205.

[0050] Figure 3B A rear view of the rear module 300 is shown. As shown, the rear module 300 includes a first component 315 and a second component 320. For example, the first component 315 and the second component 320 may be combined to form a lock module 215, which is configured to engage with the base module 205. In Figure 3B the embodiment shown, the locking feature 250 includes four protrusion features on the top surface of the rear module. In other embodiments, the locking feature 250 may include other numbers of protrusion features (such as 2, 3, 5, 6).

[0051] Figure 3C A second embodiment of the first component (such as the first component 220) is shown. In this embodiment, the first component 315 includes a smooth top surface 330. For example, the first component 315 can be conveniently inserted into the second component 320. As shown, the first component 315 includes a pair of hooks 335. For example, the hooks 335 may be configured to engage with the locking feature of the first component 315. For example, when the hooks 335 engage with the second component 320, the first component 315 can be releasably fixed to the second component 320.

[0052] Figure 4A , Figure 4B and Figure 4C An exemplary installation procedure for installing a side-loading DHFST into a shoe is shown. As Figure 4A shown, the side-loading DHFST 400 includes a static module 405 and a side-loading module 410. For example, the static module 405 can be fixedly connected to the heel portion of the shoe 415 (such as FASTS110). As shown, the user can insert the side-loading module 410 into the cavity (not shown) of the shoe 415 and the static module 405.

[0053] As Figure 4B shown, after the side-loading module 410 is installed into the cavity of the shoe 415 and the static module 405, the user can install the wheel 420 into the slot 425 ( Figure 4A ) of the shoe 415. As Figure 4CAs shown, the side-loading module 410 is partially removed from the cavity of the shoe 415 and the static module 405. In this embodiment, the side-loading module 410 includes an axle assembly 430. For example, the axle assembly 430 can be configured to be rotatably connected to the shoelace of the shoe 415. For example, rotating the axle assembly 430 in a first direction can tighten the shoelace. For example, rotating the axle assembly 430 in a second direction opposite to the first direction can loosen the shoelace.

[0054] In some implementations, after the side-load module 410 and the wheel 420 are installed in the shoe 415, the wheel 420 can be engaged with the shaft assembly 430. For example, the user can rotate the wheel 420 from the outside of the shoe 415 to tighten the shoelaces of the shoe 415. For example, the side-load DHFST 400 is arranged at the heel portion of the shoe 415. Therefore, for example, the side-load DHFST 400 can conveniently allow the user to rub the wheel 420 to manually tighten and loosen the shoelaces.

[0055] In various implementations, the static module 405 can include a twist and lock feature in the second hole. For example, the shaft assembly 430 (e.g., the shaft of the shaft assembly 430) can slide into the second hole perpendicular to the longitudinal axis. For example, after sliding into the second hole, the user can lock the cavity of the shaft assembly 430 by rotating it around the longitudinal axis.

[0056] Figure 5A , Figure 5B , Figure 5C , Figure 5D and Figure 5E is to describe the side-loaded DHFST (e.g. Figure 4A -Diagram of the components of the side-loaded DHFST400 in Figure 4. Figure 5A As shown, wheel 420 may include one or more engagement features 505. For example, one or more engagement features 505 may be configured to engage with a coupling feature of side-load module 410. For example, one or more engagement features 505 may rotate shaft assembly 430 to adjust the tension of a shoelace (e.g., coupled to shaft assembly 430). In some implementations, wheel 420 includes elastic surface 510. For example, elastic surface 510 may include a material (e.g., a rubber material, a coating) to provide friction when wheel 420 rotates relative to a substrate (e.g., the ground).

[0057] Figure 5B Shows Figure 4A-C Example of the shaft assembly 430 of the side-loading DHFST 400. As shown, the shaft assembly 430 includes a first perforated hole 515A and a second perforated hole 515B. For example, the shoelaces of the shoe 415 can be tied to one or both of the first perforated hole 515A and the second perforated hole 515B. The coupling feature 520 can be configured to engage with one or more engaging features 505 of the wheel 420. The coupling feature 520 is firmly connected to the roller 525 by two idler wheels 545. For example, when the coupling feature 520 rotates around the z-axis of the wheel 420, the perforated holes 515A, 515B. For example, the roller 525 can be wound with shoelaces. For example, by rotating the perforated holes 515A, 515B, the shoelaces can be tightened or loosened.

[0058] Figure 5C Exemplary assembly drawing showing the side-loading DHFST 400. As shown, the static module 405 includes an accessory module 535, a rear module 300, and a shaft hook 260. The side-loading module 410 includes a shaft assembly 430 coupled to two idler wheels 545. The side-loading module 410 includes a cover 550. For example, to replace the two idler wheels 545, the user may first remove the cover 550.

[0059] In some implementations, the accessory module 535 can be fixedly connected to the heel of the shoe 415. For example, the rear module 300 can be detachably connected to the accessory module 535. For example, when the rear module 300 is connected to the accessory module 535, the shaft assembly 430 and the wheel 420 can be fixed in a position configured to adjust the tension of the shoelaces of the shoe 415 by applying a rotational force on the wheel 420.

[0060] As shown, the slot 425 can define a first cavity for accommodating the wheel 420. For example, the first cavity can intersect with a second cavity for accommodating the shaft assembly 430. For example, the first cavity and the second cavity can intersect vertically within the cavity. In various embodiments, when the hub 420 is inserted into the first cavity and the shaft assembly 430 is inserted into the second cavity, the hub 420 can be locked by the shaft assembly 430 (e.g., through the shaft of the hub 420).

[0061] As Figure 5D shown, the rear module 300 can include a pair of holes 555 configured to allow the shaft hook 260 (e.g., the shaft hook of the first component 315 described with reference to Figure 3A -C) to pass through and engage the shaft assembly 430. The second component 320 includes a wheel hole 530. For example, the slot 425 can allow the wheel 420 to pass through and engage a surface (e.g., surface 245) after assembly. For example, the rear module 300 can be advantageously detached from the accessory module 535 to replace parts (e.g., the wheel 420, the shaft assembly 430).

[0062] Figure 5EShows an exemplary embodiment of the attachment module 535. For example, the attachment module 535 can be fixedly attached to the back surface 560 of the FASTS 110. In this embodiment, the attachment module 535 further includes a guiding feature 565. For example, the guiding feature 565 can be configured to disengage from the shaft assembly 430 within the cavity defined by the rear module 300 and the attachment module 535.

[0063] In various implementations, an automatic shoelace tightening device (e.g., the side-loading DHFST 400) can include an attachment base (e.g., the attachment module 535) located at the heel (e.g., of the shoe 415). For example, the connection base can include a first opening (e.g., slot 425) located at the bottom of the connection base for defining a first cavity that releasably connects to a wheel. For example, the connection base can include a second opening (e.g., the coupling feature 520, the shaft assembly 430) located on one side of the connection base for defining a second cavity for receiving a shaft. For example, the first cavity and the second cavity intersect. For example, when the shaft is inserted into the second cavity, the wheel is inserted into the first cavity, and the wheel is locked by the shaft through the shaft of the wheel.

[0064] Figure 6A and Figure 6B Illustrates an exemplary installation step of mounting a coupler-mounted DHFST onto a shoe. As Figure 6A shown, the coupler-mounted DHFST (CIDHFST 600) includes a rotating module 605 and a static module 610. For example, the rotating module 605 can be placed within the static module 610 along the guiding feature 625 of the static module 610. As Figure 6B shown, after mounting the rotating module 605, a cover module 620 is detachably connected to cover the rotating module 605 and the static module 610, located at the bottom surface 630 of the shoe 635. In this embodiment, the cover module 620 is detachably fixed to the bottom surface 630 using two screws 615. For example, the screws can be inserted vertically through the horizontal surface of the shoe sole.

[0065] As shown, the cover module 620 includes an opening configured to allow the wheel 640 of the rotating module 605 to protrude from the bottom surface 630 of the shoe 635. For example, the user can rotate the wheel 640 to adjust the tension of the shoe laces.

[0066] Figure 7 Describes various components of an exemplary coupler mounted in a shoe. In this example, the heel 700 of the shoe can include a receiving feature 720. The rotating module 705 includes two channels 715 that allow two screws to pass through one of the two channels 715 to connect to the feature 720. For example, the screws can be inserted vertically through the horizontal surface of the shoe sole. As shown, after installation, the heel 700 and the static module 610 can be detachably connected. For example, the rotating module 705 can be configured to allow the rotating component to protrude from the shoe sole surface.

[0067] In various implementations, a rotation assembly (e.g., rotation module 605, rotation module 705) can include a rotatable wheel and a shoelace tightening mechanism configured to receive the shoelaces of a shoe. For example, rotation module 705 can include shaft assembly 430. In some embodiments, the rotatable wheel and the shoelace can be enclosed within a cover (e.g., cover module 620). For example, cover module 620 can be removably coupled to the shoe using at least two coupling features. For example, the rotation assembly can be advantageously replaced as a unit.

[0068] Figure 8A and Figure 8B shows an exemplary installation procedure for mounting a top-loading DHFST onto a shoe. As Figure 8A shown, top-loading DHFST 800 includes insole 805. In this embodiment, top-loading DHFST 800 includes a rotation module 815 that can be mounted beneath insole 805. As shown, a user can remove rotation module 815 from inner cavity 810 of the shoe sole after lifting insole 805. In some examples, shoelace 115 can be connected to inner cavity 810 (e.g., in a separate cavity) beneath insole 805.

[0069] As Figure 8B shown, by manually tightening shoelace 115, insole 805 can be pulled into inner cavity 810. For example, inner cavity 810 can include a hole to allow the wheel of rotation module 815 to contact the ground after being installed into inner cavity 810.

[0070] In various implementations, an automatic shoelace tightening device (e.g., top-loading DHFST 800) can include a connection base. The connection base can include a first cavity configured to expose a wheel at the bottom of the connection base. The connection base can include a top-loading cavity for housing a rotation assembly (e.g., a shoelace-coupled rotation module 815) that includes a wheel. For example, when the rotation assembly is inserted into the top-loading cavity, the wheel is exposed from the connection base through the first cavity.

[0071] Figure 9 is an assembly diagram depicting the various components of an exemplary bearing-operated DHFST. As shown, DHFST 900 can rotate shoelace 115 by rotating rotatable wheel 905. For example, rotatable wheel 905 can drive shoelace tightener 910 through bearing 915.

[0072] Figure 10A and Figure 10B is an assembly diagram depicting an exemplary bushing-operated DHFST. In this example, DHFST 1000 can include a single shaft 1005. For example, rotatable wheel 905 can be (removably) coupled to single shaft 1005, as referenced Figure 5A-as described in D. For example, the single shaft 1005 can be a solid shaft. For example, the DHFST 100 can include a bushing that fits over the valve core. In certain embodiments, the single shaft 1005 can be advantageously modularly replaceable. For example, the user of the DHFST 1000 may not need to worry about smaller components such as the bearing 915.

[0073] Although various embodiments have been described with reference to the accompanying drawings, other embodiments are possible.

[0074] In certain embodiments, the DHFST 120 can be configured to detach from the FASTS 110 and be connected to different types of shoes via shoelaces. For example, the DHFST 120 can include a clip or magnet that allows it to be easily detached or attached to various shoes. The DHFST 120 can also include an adjustment mechanism to adjust the size and shape of the DHFST 120 to fit different shoes.

[0075] For example, the DHFST 120 can include a flexible wheel that conforms to the curve of the heel of a sports shoe. The DHFST 120 can also include a sensor for detecting the tension of the shoelace and adjusting the tightness accordingly. For example, when connected to a sports shoe, the DHFST 120 may have a diameter of approximately 5 cm and a thickness of approximately 2 cm.

[0076] For example, the DHFST 120 can include a rigid wheel that provides stability and support for the heel of a boot. The DHFST 120 can also include a locking mechanism to prevent the wheel from rotating when the user is walking or running. By way of example, but not limitation, when connected to a boot, the DHFST 120 has a diameter of approximately 6 cm and a thickness of approximately 3 cm.

[0077] For example, the DHFST 120 can include a smooth and low-profile wheel that blends in with the color and design of a dress shoe. The DHFST 120 can also include a wireless controller that allows the user to remotely tighten or loosen the shoelaces. By way of example, when connected to a dress shoe, the DHFST 120 may have a diameter of approximately 4 cm and a thickness of approximately 1 cm.

[0078] Although an exemplary system has been described with reference to the accompanying drawings, other implementations can be deployed in other industrial, scientific, medical, commercial, and / or residential applications.

[0079] In various implementations, various components and variants of components can be applied to and implemented in the embodiments described in all the figures. For example, the ratchet of the shaft assembly 125 can be applied to the back-loading module 135A, the side-loading module 135B, the top-loading unit 135D, and the bushing mechanism 140. In certain embodiments, the shaft assembly 125 may include a bearing 915. In certain embodiments, the shaft assembly 125 may be produced as a whole without including the bearing 915. In other figures, other components and / or parts related to any of the illustrations may be used.

[0080] The temporary auxiliary energy input can come from a rechargeable battery or a disposable battery, enabling portable or remote applications. Certain embodiments may use other DC voltage sources, such as batteries. The alternating current (AC) input can come from a 50 / 60 Hz power port or a portable generator and is received through a rectifier and appropriate scaling. The AC input (e.g., sine wave, square wave, triangular wave) may include a line frequency transformer for providing step-up, step-down, and / or isolation.

[0081] From an illustrative perspective, the hands-free shoelace tightening device can include a base module that is permanently connected to the proximal end of the heel along the longitudinal axis of the shoe. For example, the base module can include an opening located at the proximal end of the shoe. For example, the hands-free shoelace tightening device can include a rotating assembly configured to be detachably coupled to the opening of the base module. For example, the rotating assembly can include a shaft assembly composed of rotatable wheels. For example, the rotating assembly can include a shaft coupled through the center of the rotatable wheels, and the shaft defines the axis of rotation of the rotatable wheels, where the axis of rotation is perpendicular to the longitudinal axis.

[0082] For example, the hands-free shoelace tightening device can include a lock module. For example, the lock module can include a first engaging component configured to releasably engage the coupling feature of the base module, and a second engaging component configured to engage the shaft assembly around the axis of rotation.

[0083] For example, in the assembled state, the rotating assembly can be coupled to the base module. For example, the first engaging component can engage the base module. For example, the second engaging component can engage the shaft assembly. For example, the rotating assembly can be releasably locked within the cavity defined by the base module and the lock module.

[0084] For example, the rotating assembly can be configured to slide from the proximal end to the distal end of the shoe. For example, the base module can include an engaging ring extending from the top to the bottom of the opening. For example, the engaging ring is configured to engage the first engaging component. For example, a forward force can be applied to the first engaging component to make it move towards the distal end of the shoe.

[0085] For example, the locking module may include a first jaw and a second jaw. For example, the first jaw and the second jaw may be releasably connected together to form a double jaw in the assembled state. For example, the double jaw may include a hook configured as a second engaging component to engage the shaft assembly. For example, a backward force is applied to the second engaging component of the shoe to engage the shaft assembly.

[0086] In an illustrative aspect, the shoelace tightening device may include a base module permanently connected to the heel of the shoe along the longitudinal axis of the shoe at the proximal end of the shoe. For example, the base module may include a cavity configured to receive the shoelace of the shoe. For example, the base module may include a first hole connected to the cavity, the first hole being disposed on the bottom surface of the base module to define a first cavity. For example, the base module may include a second hole connected to the cavity and may be disposed on one side of the base module to define a second cavity. For example, the first cavity may be configured to receive a rotatable wheel in the assembled state. For example, the second cavity may be configured to receive a shaft rod in the assembled state. For example, the first cavity and the second cavity may intersect vertically within the cavity. For example, during assembly, after the rotatable wheel is inserted into the first cavity, the shaft rod may be inserted into the second cavity. For example, the rotatable wheel may be detachably connected to the shaft rod through the hub of the rotatable wheel.

[0087] For example, the base module includes a twist and lock feature at the second aperture, wherein the shaft rod is configured to slide into the second aperture perpendicular to the longitudinal axis, and after sliding into the second aperture, the shaft rod is locked within the cavity by rotating in a second direction about the longitudinal axis.

[0088] In an illustrative aspect, the shoelace tightening device may include a connection base disposed at the proximal end of the longitudinal axis of the shoe. For example, the shoelace tightening device may include a rotating assembly disposed below the connection base. For example, the rotating assembly may include a rotatable wheel. For example, the rotating assembly may include a shaft assembly including a shaft rod connected to the hub of the rotatable wheel. For example, the rotating assembly may be configured to receive the shoelace of the shoe. For example, the rotatable wheel may be connected to the sole surface and a unitary housing at the proximal end of the shoe. For example, the shaft assembly may be detachably connected to the connection base through a plurality of coupling features.

[0089] For example, the connection base may be connected to the shoe by a permanent adhesive. For example, the plurality of coupling features may include two screws. For example, the two screws may be vertically inserted through the horizontal surface of the sole into two threaded holes of the rotating assembly. For example, the two threaded holes may be respectively connected to two channels of the attachment base.

[0090] In an illustrative aspect, a shoelace tightening device can include a shaft assembly. For example, the shaft assembly can include a shaft rod configured to receive the shoelaces of a shoe. For example, the shaft assembly can include a rotatable wheel connected to the shaft rod for driving the rotation of the shaft rod. For example, the shoelace tightening device can include a base module permanently connected to the proximal end of the shoe heel along the longitudinal axis of the shoe. For example, the base module can include a top-loading cavity for accommodating the shaft assembly.

[0091] For example, the base module can include a bottom opening of the top-loading cavity for exposing the rotatable wheel on the bottom surface of the base module after the shaft assembly is accommodated by the top-loading cavity.

[0092] For example, the shaft rod of any shoelace tightening device in [0081-91] can include a cavity that allows the shoelaces of the shoe to pass through. For example, the length of the shoelace received along the shaft rod can be proportional to the angular displacement of the shaft rod in a first direction. For example, when the rotatable wheel rotates in the first direction, the shoelace may be tightened.

[0093] For example, the axis of any shoelace tightening device in [0081-92] can include a ratchet so that the rotatable wheel can rotate in the first direction.

[0094] For example, the axis of any shoelace tightening device in [0081-93] can include a bearing.

[0095] For example, the axis of any shoelace tightening device in [0081-94] can include an integral body. For example, the axis can be modularly replaceable.

[0096] Numerous embodiments have been described. However, it can be understood that various modifications can be made. For example, favorable results can be obtained if the steps of the disclosed technology are performed in a different order, or the components of the disclosed system are combined in a different manner, or the components are supplemented with other components. Accordingly, other embodiments are contemplated in the following claims.

Claims

1. A hands-free shoelace tightening device, characterized in that: include: a base module (205) permanently connected to a proximal end of the heel of the shoe along the longitudinal axis of the shoe, wherein the base module includes an opening at the proximal end of the shoe; a shaft assembly (125) configured to releasably couple into the opening of the base module, wherein the shaft assembly comprises: a rotatable wheel (150); and a shaft (240) coupled through the center of the rotatable wheel to define an axis of rotation for the rotatable wheel, wherein the axis of rotation is perpendicular to the longitudinal axis; and A lock module (215) comprising a first engagement member (220) and a second engagement member (225), wherein the first engagement member is configured to releasably engage a coupling feature of the base module, and the second engagement member is configured to engage the shaft assembly about the rotation axis, wherein, in an assembled state, The shaft assembly is coupled to the base module, The first engagement member engages with the base module, and The second engagement member engages with the shaft assembly so that the shaft assembly can be releasably locked in the The base module and the lock module are within a cavity defined by the base module and the lock module.

2. The hands-free shoelace tightening device according to claim 1, characterized in that: The shaft assembly is configured to slide from the proximal end to the distal end of the shoe.

3. The hands-free shoelace tightening device according to claim 1, characterized in that: The base module includes an engagement ring extending from a top side to a bottom of the opening, wherein the engagement ring is configured to engage the first engagement feature to apply a forward force to a distal end of the shoe at the first engagement feature.

4. The hands-free shoelace tightening device according to claim 3, characterized in that: The locking module includes a first jaw and a second jaw, wherein the first jaw and the second jaw are releasably coupled together to form a double clamp in the assembled state, wherein the double clamp includes a hook configured as the second engaging part to engage the shaft assembly to apply a rearward force to the proximal end of the shoe at the second engaging part.

5. A shoelace tightening device, characterized in that: include: A base module (405) is permanently connected to the proximal end of the heel along the longitudinal axis of the shoe, wherein the base module comprises: a cavity configured to receive a lace of the shoe; a first hole (515A) communicating with the cavity and disposed at the bottom surface of the base module, defining a first cavity; and A second hole (515B) communicating with the cavity and disposed at a side of the base module defines a second cavity, wherein: The first cavity is configured to receive a rotatable wheel (150) in an assembled state; The second cavity is configured to receive a shaft (430) in the assembled state; and The first cavity and the second cavity intersect perpendicularly within the cavity, wherein during assembly, the rotatable wheel is inserted into the first cavity and then the shaft is inserted into the second cavity, so that the rotatable wheel is releasably coupled to the shaft through the hub of the rotatable wheel.

6. The shoelace tightening device according to claim 5, characterized in that: The base module includes a twist lock feature at the second hole, wherein the shaft is configured to slide into the second hole perpendicular to the longitudinal axis, and after sliding into the second hole, the shaft is locked in the cavity by rotating about the longitudinal axis in a second direction.

7. A shoelace tightening device, characterized in that: include: an accessory base (610) disposed proximal to the longitudinal axis of the shoe; as well as A rotating assembly (605) is arranged below the accessory base, wherein the rotating assembly comprises: a rotatable wheel (150); and an axle assembly (125) comprising an axle coupled to the hub of the rotatable wheel and configured to receive a shoelace of the shoe, wherein the rotatable wheel is coupled to the integral housing at the bottom surface of the shoe and at the proximal end, And the shaft assembly is releasably coupled to the accessory base via a plurality of coupling features.

8. The shoelace tightening device according to claim 7, characterized in that: The accessory base is attached to the shoe using a permanent adhesive.

9. The shoelace tightening device according to claim 7, characterized in that: The plurality of coupling features includes two screws.

10. The shoelace tightening device according to claim 9, characterized in that: The two screws are vertically inserted into the two threaded holes of the rotating assembly through the horizontal plane of the sole, wherein the two threaded holes are respectively connected to the two channels of the accessory base.

11. A shoelace tightening device, characterized in that: include: an axle assembly (815) comprising an axle configured to receive a shoelace of a shoe, and a rotatable wheel connected to the axle and configured to drive the axle to rotate; as well as A base module (805) permanently connected to the proximal end of the heel along the longitudinal axis of the shoe, wherein the base module comprises: a top loading cavity (810) configured to receive the shaft assembly; as well as A bottom opening to the top loading cavity is configured to expose the rotatable wheel (150) at the bottom surface of the base module after the shaft assembly is received in the top loading cavity.

12. The shoelace tightening device according to any one of claims 1 to 11, characterized in that: The shaft includes a cavity configured to allow a shoelace of the shoe to pass therethrough, wherein a length of the shoelace received along the shaft is proportional to an angular displacement of the shaft in a first direction, such that the shoelace is tightened when the rotatable wheel rotates in the first direction.

13. The shoelace tightening device according to claim 12, characterized in that: The shaft includes a ratchet such that the rotatable wheel is only permitted to rotate in the first direction.

14. The shoelace tightening device according to any one of claims 1 to 13, characterized in that: The shaft includes a bearing.

15. The shoelace tightening device according to any one of claims 1 to 14, characterized in that: The shaft comprises a unitary body, so that the shaft is modularly replaceable.

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