Regional dynamic lacing system

Abstract

An article of footwear (10) includes an upper (100) and a sole structure (200) attached to the upper. The article of footwear also includes a cord lock (302) disposed within the sole structure adjacent a bottom surface (204) of a lacing structure. The article of footwear also includes a first cord (304) having a first portion (308) extending from the cord lock to a first anchor point on the upper and a second portion extending from the cord lock to a second anchor point on the upper. The article of footwear also includes a second cord (306) having a first portion (374) extending from the cord lock to a grip (388) and a second portion (376) extending from the cord lock to the grip, whereby the cord lock is operable to retract the first and second portions of the first cord when the first and second portions of the second cord are elongated.

Description

[0001] This application is a divisional application of the application patent application with the application date of September 18, 2019, application number 201980068933.5, and the invention title of “Regional Dynamic Lacing System”.

[0002] Cross Reference to Related Applications

[0003] This application claims priority to U.S. Non-Provisional Patent Application No. 16 / 574,713, filed September 18, 2019, which claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application No. 62 / 733,411, filed September 19, 2018, the entire disclosures of which are incorporated herein by reference. TECHNICAL FIELD

[0004] The present invention relates generally to articles of footwear having a dynamic lacing system for moving the footwear between a cinched state and a relaxed state. BACKGROUND

[0005] This section provides background information relating to the present disclosure and is not necessarily prior art.

[0006] Articles of footwear generally include an upper and a sole structure. The upper can be formed from any suitable material or materials and functions to receive, secure, and support a foot. A lower portion of the upper proximate to a bottom surface of the foot is attached to the sole structure. The sole structure generally includes a layered arrangement extending between an outsole and a midsole, the outsole providing wear resistance and ground-gripping traction, the midsole disposed between the outsole and the upper for providing cushioning to the foot.

[0007] The upper can cooperate with laces, straps, or other fasteners to adjust the fit of the upper around the foot. For example, laces can be tightened to close the upper around the foot and tied once the desired fit of the upper around the foot is achieved. Each time the laces are tied, care must be taken to ensure that the upper is not too loose or too tight around the foot. In addition, the laces can come untied or unloosen during the course of wearing the footwear. While fasteners such as hook and loop fasteners are easier and faster to operate than traditional laces, these fasteners are prone to wear over time and require more attention to achieve the desired tension in securing the upper to the foot.

[0008] Known automatic tightening systems generally include a tightening mechanism, such as a rotatable knob, which can be manipulated to apply tension to one or more cords that interact with the upper for closing the upper around the foot. While these automatic tightening systems can gradually increase the amount of tension in the one or more cords to achieve a desired fit of the upper around the foot, they require the time-consuming task of manipulating the tightening mechanism to properly tension the cords to secure the upper around the foot and, when the shoe needs to be removed from the foot, the wearer needs to simultaneously press a release mechanism and pull the upper away from the foot to release the tension in the cords. Furthermore, these automatic tightening systems provide a constant tensioning force along the length of the one or more cords such that rotation of the rotatable knob causes the entire cord to be uniformly tightened. In situations where it can be desirable to tighten a first region of the upper at a different rate than a second region of the upper, additional cords and tightening mechanisms must be incorporated and controlled individually.

[0009] Accordingly, known automatic tightening systems lack suitable means for quickly and variably adjusting the tension in the cords to close the upper around the foot and quickly releasing the tension applied to the cords so that the upper can quickly loosen for removal of the footwear from the foot. Furthermore, the tightening mechanisms employed by these known automatic tightening systems need to be incorporated onto the exterior of the upper so that the wearer can access the tightening mechanism to adjust the fit of the upper around the foot, thereby detracting from the overall appearance and aesthetics of the shoe. BRIEF DESCRIPTION OF DRAWINGS

[0010] The drawings described herein are for illustrative purposes only of selected configurations and are not intended to limit the scope of the present disclosure. In the drawings:

[0011] Figure 1 is a medial elevational view of an article of footwear having a cord lock movable between a locked state that restricts movement of the cord and an unlocked state that allows movement of the cord in accordance with the principles of the present disclosure;

[0012] Figure 2 is a lateral elevational view of the article of footwear of Figure 1 ;

[0013] Figure 3A is a partial top perspective view of the article of footwear of Figure 1 , with a shroud of the footwear hidden to show internal components of the footwear;

[0014] Figure 3B is a partial top perspective view of the article of footwear of Figure 1 , with the shroud shown and internal components of the footwear hidden;

[0015] Figure 4 is a bottom view of the article of footwear of Figure 1 , showing the cord lock exposed through a sole structure of the footwear;

[0016] Figure 5 is an exploded view of a rope lock according to the principles of the present invention;

[0017] Figure 6 is a perspective view of the rope lock of Figure 5

[0018] Figure 7 is a top view of the rope lock of Figure 5 , with internal components of the rope lock hidden to show the construction of the housing of the rope lock;

[0019] Figure 8 is an enlarged partial view of the rope lock of Figure 6 , showing the rope lock in a locked position; and

[0020] Figure 9 is an enlarged partial view of the rope lock of Figure 6 , showing the rope lock in an unlocked position.

[0021] Throughout the drawings, corresponding reference numerals indicate corresponding parts. DETAILED DESCRIPTION

[0022] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of the present disclosure. Those skilled in the relevant arts will recognize that embodiments can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, and / or operations are not shown or described in detail in order to avoid obscuring aspects of the present disclosure.

[0023] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and the like are to be construed to be inclusive (i.e., to include both instances of open- ended terms and instances of terms limiting to members with which a step can be associated), unless explicitly indicated otherwise. The methods described herein are not to be construed as requiring their steps to be performed in the particular order described, unless explicitly indicated otherwise. Additional or alternative steps can be employed.

[0024] ​When an element or layer is referred to as being “on”, “engaged to”, “connected to”, “attached to”, or “coupled to” another element or layer, it can be directly on, engaged, connected, attached, or coupled to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being “directly on”, “directly engaged to”, “directly connected to”, “directly attached to”, or “directly coupled to” another element or layer, there are no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between”, “adjacent” versus “directly adjacent”, etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0025] The terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections. These elements, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, as used herein, the ordinals such as “first”, “second”, and other numerical terminology do not imply a sequence or order. Thus, a first element, component, region, layer, or section discussed below could be termed a second element, component, region, layer, or section without departing from the teachings of example embodiments.

[0026] One aspect of the present disclosure provides an article of footwear. The article of footwear includes an upper defining an interior space and a sole structure attached to the upper, the sole structure having a top surface facing the interior space and a bottom surface formed on a side of the sole structure opposite the top surface that interfaces with a ground surface. The article of footwear further includes a cord lock disposed within the sole structure proximate the bottom surface. The article of footwear further includes a first cord having a first portion extending from the cord lock to a first anchor point on the upper and a second portion extending from the cord lock to a second anchor point on the upper. The article of footwear further includes a second cord having a first portion extending from the cord lock to a grip and a second portion extending from the cord lock to the grip, the cord lock operable to retract the first and second portions of the first cord when the first and second portions of the second cord are elongated.

[0027] Implementations of the present disclosure can include one or more of the following optional features. In some implementations, the cord lock is exposed for viewing through a viewing port disposed at the bottom surface of the sole structure. The viewing port includes an aperture extending at least partially through at least one of an outsole portion and a midsole portion of the sole structure. Here, the viewing port further includes a window including a transparent barrier extending across the aperture. In some examples, interior components of the cord lock are visible through the bottom surface of the sole structure.

[0028] In some constructions, the article of footwear includes a first strap extending from a first end on a medial side of the upper to a second end on a lateral side of the upper, the first end of the first strap can receive a first portion of the first cord, the second end of the first strap receives a second portion of the first cord. Here, the article of footwear can also include a second strap extending from a first end at a bite line of the footwear on the lateral side to a second end on the medial side of the upper, the second end defining a loop and receiving the first portion of the first cord.

[0029] In some examples, the cord lock includes a spool, the first cord is wrapped around the spool in a first direction, the second cord is wrapped around the spool in a second direction, the second direction being opposite the first direction. The first portion of the first cord can include a first plurality of segments extending along the medial side of the upper to a first anchor point on the medial side of the upper, the second portion of the first cord can include a second plurality of segments extending between the lateral side of the upper and the medial side of the upper to a second anchor point on the medial side of the upper.

[0030] In some implementations, the first anchor point is disposed on the medial side of the upper in a midfoot region, proximate a bite line of the upper and the sole structure, the second anchor point is disposed at a distal end of a flap disposed on the medial side of the upper in a forefoot region. The flap can extend from a proximal end attached at the bite line to a distal end proximate an instep region of the upper. The flap can include a loop for receiving the second portion of the first cord, the loop receiving a first segment and a second segment of the second portion, and the second anchor point receiving a third segment of the second portion.

[0031] Another aspect of the present disclosure provides an article of footwear. The article of footwear includes an upper defining an interior space and a sole structure attached to the upper, the sole structure having a top surface facing the interior space and a bottom surface formed on an opposite side of the sole structure from the top surface that engages a ground surface. The article of footwear also includes a cord lock disposed within the sole structure and a first cord having a first portion extending from the cord lock in a first direction and a second portion extending from the cord lock in a second direction, the first portion including a first plurality of segments routed along a medial side of the upper by at least one strap, the second portion including a second plurality of segments routed along a lateral side of the upper by at least one strap. The article of footwear also includes a second cord extending from the cord lock, the second cord is operable to move the first cord toward a retracted state when a tension applied to the second cord causes the second cord to pay out from the cord lock.

[0032] Implementations of the present disclosure can include one or more of the following optional features. In some constructions, the cord lock is exposed for viewing through the bottom surface of the sole structure. The viewing port can include an aperture extending at least partially through at least one of an outsole portion and a midsole portion of the sole structure. The viewing port can also include a window including a transparent barrier extending across the aperture. Internal components of the cord lock are visible through the bottom surface of the sole structure.

[0033] In some examples, the at least one strap includes a first strap extending from a first end disposed on a medial side of the upper to a second end disposed on a lateral side of the upper, the first end of the first strap receiving a first portion of the first cord, the second end of the first strap receiving a second portion of the first cord. Here, the at least one strap can include a second strap extending from a first end attached to a lateral side of the footwear on the lateral side to a second end on the medial side of the upper, the second end defining a loop and receiving the first portion of the first cord. In other examples, the cord lock includes a spool, the first cord being wrapped around the spool in a first direction, the second cord being wrapped around the spool in a second direction, the second direction being opposite the first direction.

[0034] In some implementations, the first portion of the first cord extends to a first anchor point on the medial side of the upper, the second portion of the first cord extending to a second anchor point on the medial side of the upper. The first anchor point can be disposed on the medial side of the upper in a midfoot region proximate a bite line of the upper and the sole structure, the second anchor point can be disposed on a distal end of a flap disposed on the medial side of the upper in a forefoot region. The flap can extend from a proximal end attached at the bite line to a distal end proximate an instep region of the upper. The flap can include a loop for receiving the second portion of the first cord, the loop receiving a first segment and a second segment of the second portion, and the second anchor point receiving a third segment of the second portion.

[0035] The details of one or more implementations of the disclosure are set forth in the accompanying drawings and the description below. Other aspects, features, and advantages will become apparent from the description and drawings, and from the claims.

[0036] Reference Figure 1 Examples of an article of footwear 10 including a system that provides variable tension are disclosed. In some implementations, the article of footwear 10 includes an upper 100 and a sole structure 200 attached to the upper 100. The article of footwear 10 also includes a tensioning system 300 integrated into at least one of the upper 100 and the sole structure 200. The tensioning system 300 includes a cord lock 302 and a pair of cords 304, 306 that cooperate with the cord lock 302 to move the article of footwear 10 between a cinched state and an uncinched state, as detailed below. In particular, the cords 304, 306 are movable in a cinching direction D T The upper 100 and the sole structure 200 cooperate to provide a channel and a guide for guiding portions of the cords 304, 306 through the cord lock 302. The cord lock 302 is configured to selectively secure the cords 304, 306 in the cinched state.

[0037] The article of footwear 10 can be divided into one or more regions. The regions can include a forefoot region 12, a midfoot region 14, and a heel region 16. The forefoot region 12 can correspond to the toes and joints of the foot connecting the metatarsal bones with the phalangeal bones of the foot. The forefoot region 12 can be subdivided into a toe portion 12T corresponding with the phalangeal bones and a ball portion 12B associated with the metatarsal bones of the foot. The midfoot region 14 can correspond to the arch area of the foot, while the heel region 16 can correspond to rear portions of the foot including the calcaneus bone. The footwear 10 can also include a forward end 18 associated with a forward-most point of the forefoot region 12 and a rearward end 20 corresponding to a rearward-most point of the heel region 16. As Figure 4 A longitudinal axis AF of the footwear 10 extends along a length of the footwear 10 from the forward end 18 to the rearward end 20 and generally divides the footwear 10 into a lateral side 24 and a medial side 22. Thus, the lateral side 24 and the medial side 22 correspond to opposite sides of the footwear 10 and extend through the regions 12, 14, 16, respectively.

[0038] The upper 100 includes an interior surface defining an interior space 102 configured to receive and secure a foot for support on the sole structure 200. An ankle opening 104 in the heel region 16 can provide access to the interior space 102. For example, the ankle opening 104 can receive a foot to secure the foot within the space 102 and facilitate entry and removal of the foot into and out of the interior space 102. The upper 100 can include a tongue portion 106 extending between the lateral side 24 and the medial side 22 and covering the interior space 102. The upper 100 can include one or more grip features 108 formed adjacent the ankle opening 104 for pulling the footwear 10 onto and off of the foot. The upper also includes a heel counter 110 extending around the rearward end 20 of the upper 100 from the medial side 22 to the lateral side 24.

[0039] The upper 100 can be formed of one or more materials stitched or bonded together to form the interior space 102. Suitable materials for the upper 100 can include, but are not limited to, mesh, textiles, foam, leather, and synthetic leather. An exemplary upper 100 can be formed from a combination of one or more generally inelastic or non-stretchable materials and one or more generally elastic or stretchable materials disposed in different regions of the upper 100 to facilitate movement of the upper 100 between a cinched condition and a relaxed condition. The one or more elastic materials can include any combination of one or more elastic fabrics such as, but not limited to, spandex, elastane, rubber, or neoprene. The one or more inelastic materials can include any combination of one or more of thermoplastic polyurethane, nylon, leather, vinyl, or another material / fabric that does not impart elasticity. As Figure 3A and 3B As best shown, the upper can be provided with one or more shrouds 112 and / or coverings 114 for concealing various components of the tensioning system 300. For example, in Figure 3AIn some examples, the upper 100 is shown without the shroud 112 and the cover 114, whereby at least one of the bands of the tensioning system 300 is exposed. In contrast, Figure 3B A mesh shroud 112 is shown covering the forefoot region 12 of the upper 100, while the tongue portion 106 of the upper 100 can be provided with a cover 114. In some examples, the cover 114 can be removed by the user to expose the tensioning system 300.

[0040] As noted above, the sole structure 200 is attached to the upper 100 and defines the ground-engaging surface 26 of the footwear 10. The sole structure 200 includes a top surface 202 and a bottom surface 204 formed on an opposite side of the sole structure 200 from the top surface 202. The bottom surface 204 of the sole structure 200 can define the ground-engaging surface 26 of the footwear. The sole structure 200 also includes a peripheral side surface 206 extending between the top surface 202 and the bottom surface 204, such that the peripheral side surface 206 defines an outer perimeter of the sole structure 200. The sole structure 200 extends continuously from a first end 208 at the forward end 18 of the footwear 10 to a second end 210 at the rearward end 20 of the footwear 10. As referred to throughout the application and the appended claims, the sole structure 200 and the upper 100 define a “bite line” 28 at which the peripheral side surface 206 and the upper 100 intersect when the footwear 10 is assembled. The bite line 28 can extend completely along the footwear 10 from the first end 208 to the second end 210 on either or both of the lateral side and the medial side, and can also extend around the first end 208, the second end 210, or both.

[0041] As described in greater detail below, the sole structure 200 is configured to house a portion of the tensioning system 300 therein, and can include one or more cavities or conduits formed therein. In the illustrated example, the sole structure 200 includes a hole or cavity 212 formed in the bottom surface 204. The cavity 212 is configured to receive the cord lock 302 within the sole structure 200. In some examples, the cord lock 302 can be encapsulated within the sole structure 200. As Figure 4 As shown in the example, the cavity 212 can be configured to receive the cord lock 302 such that a portion of the cord lock 302 is exposed or visible through the bottom surface 204 of the sole structure 200. For example, the cord lock 302 can be recessed from the bottom surface 204 of the sole structure 200 such that a portion of the cavity 212 formed between the cord lock 302 and the bottom surface 204 defines a viewing port through which the cord lock is exposed. Here, the cavity 212 or the cord lock 302 can include a transparent barrier 214 that provides a window 214 into the interior of the cord lock 302. Thus, the internal components of the cord lock 302 can be visible through the barrier 214 such that the user can observe the operation of the cord lock 302.

[0042] As noted above, the tensioning system 300 generally includes the first cord 304 and the second cord 306 that cooperate with one another via the cord lock 302 to selectively transition the upper 100 between the cinched condition and the relaxed condition. As shown, the first cord 304 is routed along the upper 100 through a plurality of guides and bands, whereby a cinching force F T is transmitted to the first cord 304 by the cord lock 302 and distributed by the first cord 304 along the upper 100 to cinch the upper 100 along the foot. As shown, the first cord 304 can be described as including a first portion 308 and a second portion 310 that are connected to one another by the cord lock 302. The first portion 308 extends from the cord lock 302 to a terminal end 312 that is anchored to the upper 100 in the midfoot region 14. Likewise, the second portion 310 extends from the cord lock 302 to a terminal end 314 that is anchored to the upper 100 in the forefoot region 12. As described below, the first portion 308 of the first cord 304 can be described as including a first plurality of segments 316a-316e that are routed along the upper 100 between the cord lock 302 and the terminal end 312 of the first portion 308. Similarly, the second portion 310 can be described as including a second plurality of segments 318a-318f that are routed along the upper 100 between the cord lock 302 and the terminal end 314 of the second portion 310.

[0043] As noted above, the tensioning system 300 includes a plurality of guides, loops, and bands through which the first portion 308 and the second portion 310 of the first cord 304 are routed to translate the tension of the first cord 304 into a cinching force along the upper 100. A first band 320 extends across the tongue portion 106 proximate the ankle opening 104 from a first end 322 on the medial side 22 of the upper 100 to a second end 324 on the lateral side 24 of the upper 100. More specifically, the first end 322 of the first band 320 is located on the medial side 22 of the upper 100 proximate the tongue portion 106 and between the midfoot region 14 and the heel region 16. Similarly, the second end 324 of the first band 320 is located on the lateral side 24 of the upper 100 proximate the tongue portion 106 and between the midfoot region 14 and the heel region 16. The first end 322 of the first band 320 defines a first loop 326 that receives a portion of the first portion 308 of the first cord 304 on the medial side 22, and the second end 324 of the first band 320 defines a second loop 328 that receives a portion of the second portion 310 of the first cord 304 on the lateral side 24. As described below, the loops 326, 328 of the first band 320 are drawn toward the sole structure 200 to cinch the first band 320 over the tongue portion 106 when the first cord 304 is cinched.

[0044] Except for passing the first and second portions 308, 310 of the first rope 304 through the loops 326, 328 for wiring, the first strap 320 is completely separated from the upper 100. Thus, the first strap 320 can be tightened on the upper 100 by the first and second portions 308, 310 of the first rope 304 to secure the upper 100. The upper 100 may include one or more guides 330 for maintaining the orientation and position of the first strap 320 across the upper 100. In the illustrated example, the upper 100 includes a pair of guides 330, one of which is positioned at a first end 322 of the first strap 320, and the second of which is positioned at a second end 324 of the first strap. Therefore, the guides 330 receive the ends 322, 324 of the first strap 320. In one example, each guide 330 is formed by sewing the opposite ends of the fabric strap to the upper 100 to form a channel 332 between the strap and the upper 100. However, in other examples, the guide 330 may be formed of a rigid material and / or may integrally define the channel 332.

[0045] The tensioning system 300 also includes a second band 334 extending from at least one proximal end 336 to a distal end 338. For example... Figure 3A As best shown, the second band 334 extends from the first proximal end 336a of the bite line 28 attached to the outer side 24 of the forefoot region 12, to the free-hanging distal end 338 of the tongue portion 106 adjacent to the inner side 22 in the midfoot region 14, and then descends back to the second proximal end 336b of the bite line 28 attached to the outer side 24 in the heel region 16. Thus, the second band 334 turns from the first proximal end 336a to the second proximal end 336b at the distal end 338 to form a loop 340 at the distal end 338. As discussed in more detail below, a portion of the first portion 308 of the first cord 304 passes through the loop 340 of the second band 334, such that when the first portion 308 of the first cord 304 is in the tightening direction D... T When the upper is pulled, the loop 340 of the second band 334 is pulled down along the inner side 22 to tighten around the upper 100.

[0046] Reference Figure 1 The tensioning system 300 includes an inner flap 342 having a proximal end 344 attached to the occlusion line 28 and a free-hanging distal end 346 on the inner side 22 adjacent to the tongue portion 106 of the upper 100. As shown, the proximal end 344 of the inner flap 342 extends along the occlusion line 28 from the toe portion 12T to the midfoot region 14. The width WMF of the inner flap 342 gradually decreases from the proximal end 344 to the distal end 346, such that the width WMF of the inner flap 342 at the distal end 346 is smaller than the width WMF of the inner flap 342 at the proximal end 344.

[0047] The distal end 346 of the medial flap 342 can include a pair of tabs 352, 354 separated from one another by a gap 356. In particular, the distal end 346 includes a forward tab 352 disposed adjacent the forward-facing edge of the medial flap 342 and a rearward tab 354 disposed adjacent the rear-facing edge of the medial flap 342. The tabs 352, 354 are independently movable relative to one another. As shown, the rearward tab 354 includes a cord guide 358 configured to receive a portion of the second portion 310 of the first cord 304 while the terminal end 312 of the second portion 310 of the first cord 304 is secured to the forward tab 352 at a first anchor 360.

[0048] Referring to Figure 2 , the lateral side 24 of the shoe 10 includes a lateral flap 362 having a proximal end 364 attached at the bite line 28 and a freely hanging distal end 366 adjacent the tongue portion 106 in the ball portion 12B of the forefoot region 12. As with the medial flap 342, the width WLF of the lateral flap 362 tapers from the proximal end 364 to the distal end 366. The lateral flap 362 includes a cord guide 368 disposed proximate the distal end 366. As described below, the second portion 310 of the first cord 304 is routed through the cord guide 368 of the lateral flap 362. Thus, because the distal end 366 is independent of the upper 100, the distal end 366 can be pulled toward the medial side 22 along the upper 100 as the first cord 304 is moved in the tightening direction D T .

[0049] As described in greater detail below with respect to the routing of the first and second portions 308, 310 of the first cord 304, the tensioning system 300 includes a plurality of cord guides 370 disposed at a plurality of locations along the upper 100 for routing the first cord 304 between the aforementioned straps 320, 334 and the flaps 342, 362. In the illustrated example, the cord guides 370 are formed from a fabric or mesh loop defining a channel for slidably receiving the first cord 304 therethrough. In some examples, the interior surface of the cord guides 370 are lined or coated with a low-friction material, such as a lubricious polymer (e.g., polytetrafluoroethylene), which facilitates movement of the first cord 304 therein.

[0050] In addition, the tensioning system 300 can include one or more conduits 372 formed through the sole structure 200 for guiding the ends of the first and second cords 304, 306 between the cord lock 302 and the upper 100, as Figure 4 best shown.

[0051] Referring to Figure 1, the first portion 308 of the first cord 304 is routed along the medial side 22 of the upper 100 as a whole. More specifically, the first portion 308 of the first cord 304 extends from the cord lock 302 in the sole structure 200, up through the bite line 28 on the medial side 22, and is guided through each of the first loop 326 of the first strap 320 and the loop 340 of the second strap 334 via a series of cord guides 370. The first portion 308 of the first cord 304 terminates at the end 312 that is anchored to the medial side 22 of the upper 100 adjacent the bite line 28 in the midfoot region 14.

[0052] As noted above, the first portion 308 of the first cord 304 can be described as including a plurality of segments 316. As Figure 1 As best shown in FIG. 3, a first segment 316a of the first portion 308 extends from a first end at the bite line 28 in the midfoot region 14 to a second end in the heel region 16, spaced apart from the bite line 28. As shown, the second end of the first segment 316a is defined where the first portion 308 of the first cord 304 passes through the first cord guide 370a. A second segment 316b of the first cord 304 extends from the first cord guide 370a to the first loop 326 of the first strap 320, where the first portion 308 extends through the first loop 326 to a third segment 316c. The third segment 316c then extends from the first loop 326 of the first strap 320 to a second cord guide 370b that is attached to the upper 100 above the first segment 316a and forward of the first cord guide 370a. The first portion 308 is then guided through the second cord guide 370b to a fourth segment 316d that extends upward from the second cord guide 370b to the upper 100 to the loop 340 of the second strap 334 adjacent the tongue portion 106 in the midfoot region 14. The first portion 308 is then guided through the loop 340 of the second strap 334 to a fifth segment 316e that extends from the loop 340 to the end 312 of the first portion 308 adjacent the bite line 28.

[0053] As shown, each of the first cord guide 370a, the second cord guide 370b, and the end 312 can be secured to the upper 100 adjacent an edge of the heel counter 110. Because the cord guides 370a, 370b and the end 312 are secured to the upper 100, the segments 316a-316e of the first portion 308 pull the first loop 326 of the first strap 320 and the loop 340 of the second strap 334 toward the heel counter 110 as the first cord 304 is moved in the tightening direction D T as described in more detail below.

[0054] Referring to Figure 2The second portion 310 of the first cord 304 is routed generally along the lateral side 24 of the upper 100 and the lower region of the tongue portion 106. More specifically, the second portion 310 of the first cord 304 extends from the cord lock 302 in the sole structure 200, up through the bite line 28 on the lateral side, and is guided through each of the second loop of the first strap 320, the cord guide 358 of the medial flap 342, and the cord guide 36 of the lateral flap 362 via a series of cord guides 370. The second portion 310 of the first cord 304 terminates at the end 314 that is anchored to the rear protrusion 352 at the distal end 346 of the medial flap 342.

[0055] As noted above, the second portion 310 of the first cord 304 can be described as including a plurality of segments 318. As Figure 2 As best shown in FIG. 6, a first segment 318a of the second portion 310 extends from a first end at the bite line 28 of the midfoot region 14 to a second end in the heel region 16, spaced apart from the bite line 28. As shown, the second end of the first segment 318a is defined where the second portion 310 of the first cord 304 passes through the third cord guide 370c. A second segment 318b of the second portion 310 extends from the third cord guide 370c to the second loop 328 of the first strap 320, where the second portion 310 is guided through the second loop 328 to a third segment 318c. The third segment 318c then extends from the second loop 328 of the first strap 320 to a fourth cord guide 370d attached to the upper 100 above the first segment 318a and forward of the third cord guide 370c. The second portion 310 is then guided through the fourth cord guide 370 to a fourth segment 318d that extends from the fourth cord guide 370d on the lateral side 24 and across the tongue portion 106 to the cord guide 358 on the rear protrusion 354 of the medial flap 342. The second portion 310 is then guided through the cord guide 358 of the rear protrusion 350 to a fifth segment 318e that extends from the cord guide 358 of the rear protrusion 350 and across the tongue portion 106 to the cord guide 368 of the lateral flap 362. The second portion 310 is guided through the cord guide 368 of the lateral flap 362 to a sixth segment 318f that extends from the cord guide 368 and across the upper of the upper 100 to the end 314. In Figure 3A The routing of the fourth segment 318d, the fifth segment 318e, and the sixth segment 318f can be clearly seen in FIG. 6. As shown, the end 314 of the second portion 310 is anchored to the front protrusion 352 by the anchor point 360.

[0056] As shown, each of the third and fourth cord guides 370c, 370d can be secured to the upper 100 proximate an edge of the heel counter 110. Because the cord guides 370c, 370d are secured to the upper 100, as the first cord 304 is moved in the tightening direction D T As the first cord 304 is moved in the tightening direction D

[0057] Similar to the first cord 304, the second cord 306 can be described as including a first portion 374 extending from a first side of the cord lock 302 to the medial side 22 of the footwear 10 and a second portion 376 extending from a second side of the cord lock 302 to the lateral side 24 of the footwear 10. In the illustrated example, the first portion 374 and the second portion 376 cooperate to define a continuous loop extending around the upper 100, and more particularly, over the tongue portion 106 of the upper 100. Although substantially continuous, the first portion 374 can be described as extending to a first end 378 and the second portion 376 can be described as extending to a second end 380. Here, the first end 378 and the second end 380 coincide with one another to form the continuous second cord 306. However, in other examples, the first end 378 and the second end 380 can be separate from one another and / or can be connected to one another by an intermediate member.

[0058] As Figure 3A As best shown, the second cord 306 extends around the tongue portion 106 proximate the ankle opening 104 (i.e., proximate the area above the instep of the wearer). As Figure 1 As shown, a portion of the first portion 374 of the second cord 306 can be routed through a first channel 382 formed through the medial side 22 of the upper 100. Likewise, a portion of the second portion 376 of the second cord can be routed through a second channel 384 formed through the lateral side 24 of the upper 100.

[0059] The portion of the second cord 306 extending around the tongue portion 106 can be encapsulated within one or more sheaths 386. Each sheath 386 can additionally be formed from a material that allows the sheath 386 and each portion 374, 376 of the second cord 306 to move in a direction away from the upper 100 (i.e., in the loosening direction L TThe material and / or fabric of the sheath 386 forms when moved from the relaxed state to the stretched or inflated state (as the user moves upward). When the tightening force FT is removed, the material and / or fabric of the sheath 386 automatically causes the sheath 386 to contract to the relaxed state and accommodate the bunching of the second cord 306 therein.

[0060] In the illustrated example, a separate tightening grip 388 is operably connected to the sheath 386 at a location of attachment proximate the tongue portion 106 to allow a user to apply a tightening force FT to pull the second cord 306 away from the upper 100, thereby causing each of the second cord 306 and the first cord 304 to move in the tightening direction D T upward. Other configurations can include one or more tightening grips 388 operably connected to other portions of the sheath 386 along the length of the second cord 306. In some embodiments, the tightening grip 388 is omitted and the sheath 386 is directly gripped by the user.

[0061] Referring again to Figure 1 , the cord lock 302 can further include a release mechanism 390 operable to transition the cord lock 302 from the locked state to the unlocked state to allow the cords 304, 306 to move in both directions D T , D F upward. For example, the release mechanism 390 can include a release line or cord 390 operable to transition the cord lock 302 from the locked state to the unlocked state when the release line 390 is pulled. The release line 390 can extend from a first end attached to the cord lock 302, through one of the channels 382, 384 formed by the upper 100, to a distal end that is exposed from the upper 100, thereby allowing a user to grip and pull the release line 390 to move the locking device 350b from the locked state to the unlocked state. In some examples, the distal end of the release line 390 includes a loop 392 and / or a gripping feature away from the cord lock 302 to allow a user to grip and pull the release line 390 when it is desired to move the cord lock 302 to the unlocked state and / or release the cord lock 302 from the unlocked state. Figure 1 The loop 392 of the release line 390 extending from the first channel 382 on the medial side 22 of the upper 100 is shown.

[0062] As described above, the locking device or cord lock 302 can be disposed within the sole structure 200 of the footwear 10 and can be biased to the locked state to restrict the cords 304, 306 from moving in their respective untightening directions D Lon the shoe. In some examples, the sole structure 200 supports a cord lock 302. A first cord 304 and a second cord 306 each approach and pass through a housing 400 of the cord lock 302 from opposite directions. In one configuration, the housing 400 includes a generally square shape with a length of about 3 inches (3 in.), a width of 3 inches (3 in.), and includes a thickness of about 1 inch (1 in.). In some configurations, when in a locked state, the cord lock 302 allows the cords 304, 306 to move in a tightening direction D T on the shoe. In some examples, the sole structure 200 supports a cord lock 302. A first cord 304 and a second cord 306 each approach and pass through a housing 400 of the cord lock 302 from opposite directions. In one configuration, the housing 400 includes a generally square shape with a length of about 3 inches (3 in.), a width of 3 inches (3 in.), and includes a thickness of about 1 inch (1 in.). In some configurations, when in a locked state, the cord lock 302 allows the cords 304, 306 to move in a tightening direction D T 、D F on the shoe. In some examples, the sole structure 200 supports a cord lock 302. A first cord 304 and a second cord 306 each approach and pass through a housing 400 of the cord lock 302 from opposite directions. In one configuration, the housing 400 includes a generally square shape with a length of about 3 inches (3 in.), a width of 3 inches (3 in.), and includes a thickness of about 1 inch (1 in.). In some configurations, when in a locked state, the cord lock 302 allows the cords 304, 306 to move in a tightening direction D

[0063] Figure 5 An exploded view of the cord lock 302 is provided, showing the housing 400 defining a cavity 402 configured to rotatably receive a spool 404, a first pawl 406, and a second pawl 408. The cord lock 302 can include a cover 410 releasably fastened to the housing 400 to prevent access to the cavity 402 when the cover 410 is fastened to the housing 400 and to allow access to the cavity 402 when the cover 410 is removed from the housing 400. One or more fasteners 412 can extend through the cover 410 and fasten with threaded holes 414 in the housing 400 to secure the cover 410 to the housing 400.

[0064] The housing 400 defines a plurality of retainer slots 416 each configured to receive and support a respective cord retainer 418 through which the cords 304, 306 are introduced into the cavity 402 of the housing 400. The housing 400 can support a plurality of cord retainers 418 such that the ends of the cords 304, 306 each extend through a respective one of the cord retainers 418.

[0065] As described in greater detail below, the housing 400 can further include a retaining wall 420 disposed within the cavity 402. The retaining wall 420 is configured to cooperate with the first pawl 406. The retaining wall 420 can further include a haptic slot 422 configured to receive one or more haptic domes 424. The haptic domes 424 are described in greater detail below with reference to FIGS. 6-8. Figures 6-9 The first pawl 406 can engage the haptic domes 424 to provide a click or other sound indicating that the spool 404 has changed position relative to the housing 400 and / or that the cord lock 302 has transitioned from a locked state to an unlocked state, as described in greater detail below.

[0066] Figure 7A top view of the housing 400 is provided showing a pair of mounting flanges 426, 428 disposed on opposite sides of the housing 400. The mounting flanges 426, 428 can rest on an interior surface of the cavity 212 of the sole structure 200 to mount the cord lock 302 within the sole structure 200. Optionally, the flanges can be attached to a strobel of the upper 100. The strobel can be any support structure forming a foot under portion of the article of footwear 10 disposed at least between the sole structure 200 and the void 102. In some examples, an adhesive such as an adhesive and / or epoxy can be applied to contact surfaces of the flanges 426, 428 and / or an interior surface of the cavity 212 of the sole structure 200 for attaching the housing 400 within the cavity 212. Additionally or alternatively, the mounting flanges 426, 428 can define one or more mounting holes 430 formed therethrough and configured to receive a fastener (not shown) for mounting the housing 400 to the sole structure 200.

[0067] Figure 7 The housing 400 is shown with the pawl members 406, 408, the cords 304, 306, and other components of the cord lock 302 removed to expose an elongated channel 432 formed through the housing 400. As discussed in greater detail below, the elongated channel 432 is aligned with the attachment point of the first pawl 406 and allows the release line 390 to pass from underneath the housing 400 and upward through a feed slot 434 defined by the mounting flange 428. The mounting flange 428 also defines a cutout region 435 proximate the feed slot 434 to provide more clearance for the release line 390 (and / or the conduit 372 surrounding the release line 390) to extend from the housing 400. The mounting flanges 426, 428 can define a lip around the perimeter of the housing 400 such that the housing 400 is spaced apart from the mounting surface of the cavity 212 or strobel, allowing the release line 390 to be routed between the housing 400 and the mounting surface of the cavity 212 or strobel. Thus, the release line 390 can freely extend underneath the housing 400 between the elongated channel 432 and the feed slot 434. In some examples, the feed slot 434 has a curved edge to prevent the release line 390 from catching or being restricted by the housing 400.

[0068] Referring now to Figure 6 , the spool 404 is supported within the cavity 402 of the housing 400 and can rotate relative to the housing 400. In some examples, as the cords 304, 306 are moved in a tightening direction D T , the spool 404 rotates relative to the housing 400 in a first direction D S1 , and as the cords 304, 306 are moved in a loosening direction D L , the spool 404 rotates relative to the housing 400 in a second, opposite direction D S2The spool 404 includes a first channel or annular groove 436 configured to collect portions of the first cord 304 and a second channel or annular groove 438 configured to collect portions of the second cord 306. The spool 404 can include one or more anchor slots 440 formed through a dividing wall that separates the channels 436, 438 for securing a rotational position of each cord 304, 306 relative to the spool 404.

[0069] The cord lock 302 further includes a ratchet mechanism 442 associated with the spool 404 and having a plurality of teeth 444 positioned circumferentially about an axis of the ratchet mechanism 442 and projecting radially inward therefrom. In some embodiments, the ratchet mechanism 442 is integrally formed on an inner peripheral wall of the spool 404 such that the plurality of teeth 444 project radially inward from the channels 436, 438. In other examples, the ratchet mechanism 442 is supported for co-rotation with the spool 404.

[0070] The first pawl 406 is disposed within the cavity 402 of the housing 400 and is configured to cooperate with the ratchet mechanism 442 to selectively prevent and allow rotation of the spool 404, and thus movement of the cords 304, 306. In some examples, the first pawl 406 includes one or more teeth 445 configured to selectively meshingly engage with the plurality of teeth 444 of the ratchet mechanism 442. In some embodiments, the first pawl 406 includes a first pawl shaft 446 configured to support the first pawl 406 within the housing 400 to allow the first pawl 406 to rotate about a first pawl rotation axis A FP about the pawl rotation axis A

[0071] The first pawl spring 448 can be operably connected to the first pawl shaft 446 and the retaining wall 420 disposed within the cavity 402 of the housing 400 to bias the first pawl 406 in the first direction D FP1 about the pawl rotation axis A FP The first pawl spring 448 can be operably connected to the first pawl shaft 446 and the retaining wall 420 disposed within the cavity 402 of the housing 400 to bias the first pawl 406 in the first direction D FP about the pawl rotation axis A FP1 about the pawl rotation axis A FP about the pawl rotation axis A L about the pawl rotation axis A

[0072] Figure 8 andFigure 9 A top view of the first pawl 406 of the cord lock 302 is shown. The first pawl 406 defines a first receiving surface 450 configured to support a first pawl spring 448. A first pawl shaft 446 protrudes from the first receiving surface 450 in a direction substantially perpendicular to the first receiving surface 450. The first pawl shaft 446 can be integrally formed with the first pawl 406. The first pawl 406 also defines a second receiving surface 452 configured to support a second pawl spring 464. A hole 454 is formed through the second receiving surface 452 and is configured to receive a second pawl shaft 462. An anchor post 458 can protrude from the receiving surfaces 450, 452 in a direction substantially parallel to the first pawl shaft 446. The anchor post 458 can define a hole 460 to provide an attachment location for attaching the first end 354d of the release line 390 to the anchor post 458. The anchor post 458 can be integrally formed with the first pawl 406.

[0073] Referring to Figure 6 , the second pawl shaft 462 rotatably attaches the second pawl 408 to the first pawl 406 to allow the second pawl 408 to rotate relative to the first pawl 406 and the housing 400 about a second pawl rotation axis A SP . The second pawl rotation axis A SP may extend substantially parallel to the first pawl rotation axis A FP and the rotation axis of the spool 404. In some examples, the second pawl 408 is associated with a second pawl spring 464 configured to bias the second pawl 408 into engagement with a control surface 466 associated with the inner circumference of the spool 404 when the first pawl 406 is disengaged from the teeth 444 of the ratchet mechanism 442 to allow the spool 404 to rotate in the second direction D S2 .

[0074] Figure 6 A perspective view of the cord lock 302 in a locked state is provided, in which the first pawl teeth 445 of the first pawl 406 engage the teeth 444 of the ratchet mechanism 442 to selectively restrict rotation of the spool 404 in the second direction D S2 , thereby restricting movement of the cords 304, 306 in their respective loosening directions D L . In some examples, the plurality of teeth 444 are angled to allow rotation of the spool 404 in the first direction D S1 when the teeth 445 of the first pawl 406 are engaged with the teeth 444 of the ratchet mechanism 442, thereby allowing movement of the first cord 304 in the tightening direction D T and allowing movement of the second cord 306 in the tightening direction D T . T ​

[0075] When the spool 404 is rotated in the first direction D S1 , the second cord 306 is unwound from the second channel 438 of the spool 404 while the first channel 436 of the spool 404 is simultaneously retracted as the spool 404 is rotated in the first direction D S1 . Thus, the movement of the cords 304, 306 in their respective tightening directions D T results in an increase in the effective length of the second cord 306 while resulting in a decrease in the effective length of the first cord 304, thereby moving the upper 100 to the tightened state to enclose the interior volume 102 around the user’s foot. Here, during each successive engagement between the first pawl 406 (e.g., the first pawl teeth 445) and the teeth 444 of the ratchet mechanism 442, the second cord 306 is progressively moved in the tightening direction D T , thereby progressively increasing the tension applied to the first and second portions 308, 310 of the first cord 304 for tightening the fit of the interior volume 102 around the foot as the upper 100 is moved to the tightened state. More specifically, because each of the first portion 308 and the second portion 310 of the first cord 304 is connected to and disposed within the first channel 436 of the spool 404, each of the portions 308, 310 will be wound and unwound by the spool 404 at the same rate, thereby providing a substantially uniform degree of tightening of the upper 100 around the foot.

[0076] In some examples, when a predetermined release force F R is applied to the release cord 390, the release cord 390 is operably connected to the anchor post 458 of the first pawl 406 to selectively disengage the first pawl 406 from the teeth 444 of the ratchet mechanism 442. When the second pawl 408 is engaged with the control surface 466, the second pawl 408 is operable to control the rotational speed of the spool 404 in the second direction D S2 such that the cords 304, 306 do not tangle as they are collected (e.g., wound) or released (e.g., unwound) from the respective one of the first channel 436 and the second channel 438 of the spool 404 during rotation in the second direction D S2 . In some configurations, the second pawl 408 includes two cam surfaces that remain engaged with the respective one of the two control surfaces 466 when the first pawl 406 remains disengaged from the teeth 444 (i.e., when the cord lock 302 is operable in the unlocked state). Each control surface 466 can be axially disposed on opposite sides of the ratchet mechanism 442 such that the teeth 444 are disposed between and project radially inward from the control surfaces 466.

[0077] Referring to Figure 8When the rope lock 302 is in the locked state, the first pawl 406 is biased to engage with the plurality of teeth 444 of the ratchet mechanism 442. Here, the first pawl 406 rotates about the first pawl rotation axis A. FP In the first direction D FP1 The pivoting and rotation cause the teeth 445 of the first pawl 406 to engage with the teeth 444 of the ratchet mechanism 442. In some examples, the first pawl 406 includes a tactile protrusion 468 configured to engage with a tactile dome 424 to provide a "click" sound indicating an incremental change in position in the spool 404 during each successive engagement between the first pawl 406 and the teeth 444.

[0078] Reference Figure 9 One end 394 of the release line 390 is attached to the anchor post 458 of the first pawl 406 to allow the release line to be released when the predetermined release force F is applied. R When applied to the release line 390, the release line 390 selectively disengages the first pawl 406 from the teeth 444 of the ratchet mechanism 442. For example, the user can grasp the loop 392 of the release line 390 and apply a predetermined force F. R This causes the first pawl 406 to disengage from the teeth 444 of the ratchet mechanism 442. Here, the predetermined force F R Overcoming the biasing force of the first pawl spring 448 to allow the first pawl 406 to move in the second direction D FP2 Rotation axis A around the first pawl FP Rotation. Furthermore, when the predetermined force F... R When the first pawl 406 disengages from the teeth 444 to switch the rope lock 302 to the unlocked state, the tactile protrusion 468 can engage with the tactile dome 424 to provide a "click" sound.

[0079] Figure 9 It shows that when the predetermined force F R When the release line 390 is applied, the rope lock 302 is in an unlocked state in response to the release line 390 selectively disengaging the first pawl 406 from the tooth 444 of the ratchet mechanism 442. When the rope lock 302 is in the unlocked state and the first pawl 406 is disengaged from the tooth 444 of the ratchet mechanism 442, the release force F... L When applied to the first rope 304, the spool 404 is allowed to move along the second direction D. S2 Rotate to allow the first rope 304 to move in the release direction D L Movement. In some examples, as the spool 404 moves in the second direction D... S2 As the spool rotates upwards, the first channel 436 of the spool 404 collects the first rope 304, while the second channel 438 of the spool 404 releases the second rope 306. Therefore, the second rope 306 is in the release direction D. LThe movement on the upper allows the effective length of the first rope 304 to increase, allowing segments 316a-316e and 318a-318f to loosen, thereby facilitating the transition of the upper 100 from a tightened state to a loosened state, allowing the foot to be removed from the inner space 102.

[0080] Refer back Figure 5 The cover 410 and housing 400 of the rope lock 302 may each include a hub 470 configured to support a first pawl shaft 446 of the first pawl 406. The cover 410 may also each include an elongated channel 472 that cooperates with an elongated channel 432 of the housing 400 to allow the first pawl 406 to rotate about a first pawl axis A. FP Along the first direction D FP1 Or the second direction D FP2 During pivoting, the anchor post 458 of the first pawl 406 is allowed to rotate freely relative to the housing 400 and the cover 410.

[0081] In use, the footwear 10 can be selectively moved between a tightened and slack state using the tensioning system 300. When the footwear 10 is initially in a slack state, the effective length of the first cord 304 is maximized, such that the first cord is slack when wrapped around the upper 100, while the effective length of the second cord 306 is minimized as it is wound around the spool 404 of the cord lock 302. Therefore, the user's foot can be inserted into the internal space 102 of the shoe 10, whereby the material of the upper 100 allows it to stretch to accommodate the foot.

[0082] As the user's foot is inserted into the internal space 102 of the shoe upper 100, the user can move the tensioning system 300 to a tightened state to secure the shoe 10 to the foot. As described above, a tightening force F is applied to the tightening grip 388. T The tightening system 300 moves to the tightened state, thereby causing the second rope 306 to move in the tightening direction D. T Move upwards. As the second rope 306 moves along the tightening direction D... T Move, spool 404 along the first direction D S1 The second rope 306 is rotated and unwound from the second channel 438. Simultaneously, the first rope 304 is wound within the first channel 436, causing the first rope 304 to retract into the rope lock 302. Therefore, the effective length of the first rope 304 around the upper 100 is minimized to move the upper 100 into a tightened state around the foot.

[0083] As described above, when the first rope 304 is along the tightening direction D T During movement, segments 316a-316e of the first part 308 will tighten the force F. TThe tensioning force FT is distributed to the ends 322 and 338 of the first strap 320 and the second strap 334 to tighten the first strap 320 and the second strap 334 on the tongue portion 106. Simultaneously, segments 318a-318e of the second portion 310 distribute the tensioning force FT to the second end 324 of the first strap 320, the rope guides 358 and 368 of the inner wing 342 and the outer wing 362, and the anchor point 360 of the inner wing 342 to contract the lower region of the tongue portion 106. Meanwhile, the effective length of the second rope 306 can increase when the tensioning system 300 moves to the tightened state. However, the second rope 306 can be held in the tightened position against the upper 100 by the elasticity of the sheath 386.

[0084] Before, during, or after the tensioning system 300 moves to the tightened state, when the release force F applied to the release line 390... R When overcome by the first pawl spring 448, the biasing force of the first pawl spring 448 can move the first pawl 406 to the locked position. When the rope lock 302 is in the locked state, the teeth 444 of the spool 404 are engaged by the teeth 445 of the first pawl 406 to prevent the spool 404 from moving along the second direction D. S2 (That is, release direction D) L Rotation. Therefore, as long as the rope lock 302 remains in the locked position, the rope lock 302 will keep the tensioning system 300 in a tightened state.

[0085] When the user wishes to remove the footwear 10 from their feet, the tensioning system 300 can move to the relaxed state to allow the upper 100 to loosen around the foot. Initially, the cord lock 302 must be engaged by applying sufficient release force F. R It moves to the unlocked state by overcoming the bias force of the first pawl spring 448. When the release force F... R When the bias force is overcome, the teeth 445 of the first pawl 406 will separate from the teeth 444 of the spool 404, thereby allowing the spool 404 to move along the second direction D. S2 Rotate.

[0086] The user can apply a releasing force F to the first rope 304. L In the direction of release D L The first rope is moved upwards to maximize the effective length of the first rope 304, allowing the upper 100 to be loosened. In the illustrated example, the loosening force F can be applied by pulling the front end 18 of the upper 100 in a downward direction. L Indirectly applied to the first rope 304, thereby forcing the internal space 102 to open to remove the foot. Optionally, the first rope 304 may be provided with one or more release grips (not shown) to allow the user to apply a release force F. T Apply directly to the first rope 304.

[0087] As the first cord 304 moves in the loosening direction D L The spool 404 rotates in the second direction D S2 thereby unwinding the first cord 304 from the first channel 436. As the first cord 304 is unwound, the effective length of the first cord 304 increases and the segments 316a-316e, 318a-318f of the first and second portions 308, 310 relax, allowing the first strap 320, the second strap 334, the medial side flap 342, and the lateral side flap 362 to relax around the upper 100. At the same time, the second cord 306 winds within the second channel 438, thereby causing the second cord 306 to retract into the cord lock 302. As a result, the effective length of the second cord 306 is minimized.

[0088] The following clauses provide exemplary constructions of articles of footwear and cord locks according to the principles of the present application.

[0089] Clause 1 : An article of footwear comprising: an upper defining an interior space; a sole structure attached to the upper and having a top surface facing the interior space and a bottom surface formed on an opposite side of the sole structure from the top surface that engages a ground surface; a cord lock disposed within the sole structure adjacent to the bottom surface; a first cord having a first portion extending from the cord lock to a first anchor point on the upper and a second portion extending from the cord lock to a second anchor point on the upper; and a second cord having a first portion extending from the cord lock to a grip and a second portion extending from the cord lock to the grip, the cord lock operable to retract the first and second portions of the first cord when the first and second portions of the second cord are elongated.

[0090] Clause 2: The article of footwear of clause 1, wherein the cord lock is exposed for viewing through a viewing port disposed at the bottom surface of the sole structure.

[0091] Clause 3: The article of footwear of clause 2, wherein the viewing port comprises a hole extending at least partially through at least one of an outsole portion and a midsole portion of the sole structure.

[0092] Clause 4: The article of footwear of clause 3, wherein the viewing port comprises a window comprising a transparent barrier extending across the hole.

[0093] Clause 5: The article of footwear of any of clauses 1-4, further comprising a first strap extending from a first end on a medial side of the upper to a second end on a lateral side of the upper, the first end of the first strap receivable of the first portion of the first cord, the second end of the first strap receiving the second portion of the first cord.

[0094] Clause 6: The article of footwear of Clause 5, further comprising a second strap extending from a first end at a bite line of the footwear on the lateral side to a second end on a medial side of the upper, the second end defining a loop and receiving the first portion of the first cord.

[0095] Clause 7: The article of footwear of any of Clauses 1-6, the cord lock comprising a spool, the first cord wrapped around the spool in a first direction, the second cord wrapped around the spool in a second direction, the second direction opposite the first direction.

[0096] Clause 8: The article of footwear of any of Clauses 1-7, the first portion of the first cord comprising a first plurality of segments extending along the medial side of the upper to a first anchor point on the medial side of the upper, the second portion of the first cord comprising a second plurality of segments extending between the lateral side of the upper and the medial side of the upper to a second anchor point on the medial side of the upper.

[0097] Clause 9: The article of footwear of any of Clauses 1-8, the first anchor point disposed on the medial side of the upper in a midfoot region proximate a bite line of the upper and the sole structure, the second anchor point disposed at a distal end of a flap disposed on the medial side of the upper in a forefoot region.

[0098] Clause 10: The article of footwear of Clause 9, wherein the flap extends from a proximal end attached at the bite line to a distal end proximate an instep region of the upper.

[0099] Clause 11: The article of footwear of Clause 9 or 10, wherein the flap further comprises a loop for receiving the second portion of the first cord, the loop receiving a first segment and a second segment of the second portion, and the second anchor point receiving a third segment of the second portion.

[0100] Clause 12: The article of footwear of any of Clauses 1-11, an interior component of the cord lock visible through a bottom surface of the sole structure.

[0101] Clause 13: An article of footwear comprising: an upper defining an interior space; a sole structure attached to the upper and having a top surface facing the interior space and a ground-engaging bottom surface formed on a side of the sole structure opposite the top surface; a cord lock disposed within the sole structure; a first cord having a first portion extending from the cord lock in a first direction and a second portion extending from the cord lock in a second direction, the first portion comprising a first plurality of segments routed along a medial side of the upper by at least one strap, the second portion comprising a second plurality of segments routed along a lateral side of the upper by the at least one strap; and a second cord extending from the cord lock and operable to move the first cord toward a retracted state when a tension applied to the second cord causes the second cord to pay out from the cord lock.

[0102] Clause 14: The article of footwear of Clause 13, wherein the cord lock is exposed for viewing through the bottom surface of the sole structure.

[0103] Clause 15: The article of footwear of Clause 14, wherein the cord lock is exposed for viewing through the bottom surface of the sole structure at an aperture extending at least partially through at least one of an outsole portion and a lace contact portion of the sole structure.

[0104] Clause 16: The article of footwear of Clause 15, further comprising a window comprising a transparent barrier extending across the aperture.

[0105] Clause 17: The article of footwear of any of Clauses 13-16, the at least one strap comprising a first strap extending from a first end disposed on a medial side of the upper to a second end disposed on a lateral side of the upper, the first end of the first strap receiving the first portion of the first cord, the second end of the first strap receiving the second portion of the first cord.

[0106] Clause 18: The article of footwear of Clause 17, wherein the at least one strap comprises a second strap extending from a first end attached to a lateral side of the footwear on the lateral side to a second end on the medial side of the upper, the second end defining a loop and receiving the first portion of the first cord.

[0107] Clause 19: The article of footwear of any of Clauses 13-18, the cord lock comprising a spool, the first cord being wound around the spool in a first direction, the second cord being wound around the spool in a second direction, the second direction being opposite the first direction.

[0108] Clause 20: The article of footwear of any of clauses 13-18, a first portion of the first cord extending to a first anchor point on a medial side of the upper, a second portion of the first cord extending to a second anchor point on the medial side of the upper.

[0109] Clause 21 : The article of footwear of clause 20, wherein the first anchor point is disposed on the medial side of the upper in a midfoot region proximate a bite line of the upper and the sole structure, the second anchor point disposed at a distal end of a flap disposed on the medial side of the upper in a forefoot region.

[0110] Clause 22: The article of footwear of clause 21, wherein the flap extends from a proximal end attached at the bite line to a distal end proximate an instep region of the upper.

[0111] Clause 23: The article of footwear of clauses 21 or 22, wherein the flap further comprises a loop for receiving the second portion of the first cord, the loop receiving a first segment and a second segment of the second portion, and the second anchor point receiving a third segment of the second portion.

[0112] Clause 24: The article of footwear of any of clauses 13-18, an interior component of the cord lock is visible through a bottom surface of the sole structure.

[0113] The foregoing description has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. The various elements or features of a particular structure are generally not limited to the particular structure unless specifically recited herein, and an appreciation of alternative structures can be gained by a review of the various elements that can be included in the selected structures. Likewise, a number of methods can be used to implement the various elements or features of the selected structures. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.

Claims

1. An article of footwear comprising: an upper defining an interior space and having a medial side and a lateral side; a sole structure attached to the upper and having a top surface facing the interior space and a bottom surface engaging a ground surface formed on an opposite side of the sole structure from the top surface; a flap extending in a direction from the sole structure at one of the medial side and the lateral side toward the other of the medial side and the lateral side, the flap including a first end secured to the sole structure and a second end opposite the first end, the second end being a free end of the flap movable relative to the upper; and a first cord having a first portion extending from the other of the medial side and the lateral side to the flap and a second portion extending from the flap to the other of the medial side and the lateral side, the first cord operable to pull the flap toward the other of the medial side and the lateral side when moved from a relaxed state to a cinched state.

2. The article of footwear of claim 1, wherein, the first cord includes a third portion extending from the other of the medial side and the lateral side to the flap.

3. The article of footwear of claim 2, wherein, the third portion is secured to an anchor point of the flap.

4. The article of footwear of claim 3, further comprising a first cord guide attached to the flap, the first cord engaging the first cord guide between the first portion and the second portion.

5. The article of footwear of claim 3, further comprising a second cord guide disposed at the other of the medial side and the lateral side, the second cord guide engaging the first cord between the second portion and the third portion.

6. The article of footwear of claim 1, wherein, the flap includes an edge facing the other of the medial side and the lateral side, the edge defining a first protrusion and a second protrusion, the first protrusion and the second protrusion being spaced apart by a gap.

7. The article of footwear of claim 6, wherein, the first portion extends to the first protrusion and the second portion extends from the first protrusion.

8. The article of footwear of claim 1, further comprising a cord lock receiving the first portion therein, the cord lock operable to selectively restrict movement of the first cord relative to the upper.

9. The article of footwear of claim 8, wherein, the cord lock is disposed within the sole structure.

10. The article of footwear of claim 1, wherein, the flap extends over an exterior surface of the upper.

11. An article of footwear comprising: an upper defining an interior space and having a medial side and a lateral side; a sole structure attached to the upper and having a top surface facing the interior space and a bottom surface engaging a ground surface formed on an opposite side of the sole structure from the top surface; a flap extending in a direction from the sole structure at one of the medial side and the lateral side toward the other of the medial side and the lateral side, the flap including a first end secured to the sole structure and a second end opposite the first end, the second end being a free end of the flap movable relative to the upper; and a first cord extending between the sole structure and the flap in a tortuous path and operable to pull the flap toward the other of the medial side and the lateral side when moved from a relaxed state to a cinched state. ​ 12. The article of footwear of claim 11, wherein, The first cord has a first portion extending from the other of the medial side and lateral side to the flap, a second portion extending from the flap to the other of the medial side and lateral side, and a third portion extending from the other of the medial side and lateral side to the flap.

13. The article of footwear of claim 12, wherein, The third portion is secured to an anchor point of the flap.

14. The article of footwear of claim 13, further comprising a first cord guide attached to the flap, the first cord engaging the first cord between the first portion and the second portion.

15. The article of footwear of claim 14, further comprising a second cord guide disposed at the other of the medial side and lateral side, the second cord guide engaging the first cord between the second portion and the third portion.

16. The article of footwear of claim 11, wherein, The flap includes an edge facing the other of the medial side and lateral side, the edge defining a first protrusion and a second protrusion, the first protrusion and second protrusion spaced apart by a gap.

17. The article of footwear of claim 16, wherein, The first cord extends to the first protrusion and the second protrusion.

18. The article of footwear of claim 11, further comprising a cord lock receiving the first cord therein, the cord lock operable to selectively restrict movement of the first cord relative to the upper.

19. The article of footwear of claim 18, wherein, The cord lock is disposed within the sole structure.

20. The article of footwear of claim 11, wherein, The flap extends on an outer surface of the upper. The first cord has a first portion extending from the other of the medial side and lateral side to the flap, a second portion extending from the flap to the other of the medial side and lateral side, and a third portion extending from the other of the medial side and lateral side to the flap. The third portion is secured to an anchor point of the flap.

14. The article of footwear of claim 13, further comprising a first cord guide attached to the flap, the first cord engaging the first cord between the first portion and the second portion.

15. The article of footwear of claim 14, further comprising a second cord guide disposed at the other of the medial side and lateral side, the second cord guide engaging the first cord between the second portion and the third portion. The flap includes an edge facing the other of the medial side and lateral side, the edge defining a first protrusion and a second protrusion, the first protrusion and second protrusion spaced apart by a gap. The first cord extends to the first protrusion and the second protrusion.

18. The article of footwear of claim 11, further comprising a cord lock receiving the first cord therein, the cord lock operable to selectively restrict movement of the first cord relative to the upper. The cord lock is disposed within the sole structure. The flap extends on an outer surface of the upper.

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