Adjustment system for an article of footwear

Abstract

An adjustment system for footwear includes: a body attached to an outer surface of the footwear and including a plurality of segments cooperating to define a cavity, the body being movable between an extended state and a folded state; and a bladder attached to the footwear and defining an internal cavity in fluid communication with the cavity, the bladder being movable from a relaxed state to a contracted state when the body moves from a folded state to an extended state.

Description

[0001] Cross-reference to related applications This PCT international application claims priority to U.S. Application No. 18 / 982,704, filed December 16, 2024, which claims priority to U.S. Provisional Application No. 63 / 612,297, filed December 19, 2023, pursuant to 35 USC §119(e). The disclosures of these earlier applications are considered part of the disclosures of this application and are incorporated herein by reference in their entirety. Technical Field

[0002] This disclosure generally relates to an adjustment system for footwear products. Background Technology

[0003] This section provides background information in connection with this disclosure and is not necessarily prior art.

[0004] Footwear typically consists of an upper and a sole structure. The upper can be formed from any suitable material to accommodate, secure, and support the foot against the sole structure. The upper may work with laces, straps, or other fasteners to adjust the fit around the foot. The bottom portion of the upper, closest to the foot, is attached to the sole structure.

[0005] While conventional shoe uppers include structures such as laces, straps, and fasteners to secure the upper around the wearer's foot, this conventional structure, while adequately securing the upper and thus the footwear to the wearer's foot, typically does not conform the upper to the wearer's foot. Therefore, the wearer's foot is allowed to move relative to and within the upper of the footwear. This relative movement between the foot and the upper results in relative movement between the foot and the sole structure. Consequently, energy may be lost during running, jumping, tilting, and other movement due to this relative movement between the wearer's foot and the upper, leading to inefficiency during use. Attached Figure Description

[0006] The accompanying drawings described herein are for illustrative purposes only, representing the selected configurations and not all possible implementations, and are not intended to limit the scope of this disclosure.

[0007] Figure 1A This is a perspective view of an example of a footwear article having an adjustment system and a flex region in a relaxed state, according to the present disclosure; Figure 1B It is based on the present disclosure having a flexible region in a contracted state. Figure 1A A perspective view of footwear products; Figure 2This is a rear perspective view of a footwear article having an adjustment system in a compressed state according to the present disclosure; Figure 3 It is an adjustment system according to this disclosure having an extended state. Figure 2 Rear perspective view of footwear products; Figure 4 This is a rear perspective view of a footwear product with an adjustment system according to this disclosure; Figure 5A This is a perspective view of the foldable body of the adjustment system in an extended state according to the present disclosure; Figure 5B It is in a compressed state according to this disclosure. Figure 5A A perspective view of the foldable main body; Figure 6 This is a schematic diagram of the filling material according to this disclosure; Figure 7 This is a cross-sectional view of the foldable body according to this disclosure; Figure 8 It is along Figure 5A The line cut at 5C-5C Figure 5A Cross-sectional view of the foldable body; Figure 9 It is a partial side view of a footwear article incorporating an adjustment system according to this disclosure; Figure 10 yes Figure 9 A magnified partial top view of the adjustment system; Figure 11 It is in a partially extended state. Figure 9 An enlarged partial side view of the adjustment system; Figure 12 It is in an extended state. Figure 9 A magnified partial top-down perspective view of the adjustment system; Figure 13A This is a perspective view of the foldable body according to the present disclosure, in an extended state; Figure 13B It is in a compressed state according to this disclosure. Figure 13A A perspective view of the foldable main body; Figure 14 yes Figure 13A A perspective view of the foldable main body; Figure 15 yes Figure 14 A perspective cross-sectional view of the foldable body; Figure 16A This is a perspective view of the foldable body according to this disclosure in an extended state; Figure 16B It is in a compressed state according to this disclosure. Figure 16AA perspective view of the foldable main body; Figure 17 yes Figure 16A A perspective view of the foldable main body; Figure 18 yes Figure 17 A perspective cross-sectional view of the foldable body; Figure 19A This is a perspective view of the foldable body according to this disclosure in an extended state; Figure 19B It is in a compressed state according to this disclosure. Figure 19A A perspective view of the foldable main body; Figure 20 yes Figure 19A A perspective view of the foldable main body; Figure 21 yes Figure 20 A perspective cross-sectional view of the foldable body; Figure 22 is a perspective view of the foldable body according to the present disclosure in an extended state; Figure 23 This is a front view of the foldable body in Figure 22; Figure 24 It is a cross-sectional view of the foldable body of Figure 22 taken along line 24-24 of Figure 22; and Figure 25 It is along Figure 23 The cross-sectional view of the foldable body in Figure 22 is taken from line 25-25.

[0008] In all the accompanying drawings, the corresponding reference numerals indicate the corresponding parts. Detailed Implementation

[0009] The exemplary configurations will now be described more fully with reference to the accompanying drawings. These exemplary configurations are provided so that this disclosure will be thorough and will fully convey the scope of this disclosure to those skilled in the art. Specific details, such as examples of particular components, apparatus, and methods, are set forth to provide a thorough understanding of the configurations of this disclosure. It will be apparent to those skilled in the art that specific details are not required, that the exemplary configurations may be embodied in many different forms, and that the specific details and exemplary configurations should not be construed as limiting the scope of this disclosure.

[0010] The terminology used herein is for the purpose of describing particular exemplary configurations only and is not intended to be restrictive. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless the context explicitly indicates otherwise. The terms “comprises,” “comprising,” “including,” and “having” are inclusive and therefore specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0011] When an element or layer is referred to as “on another element or layer,” “joined to,” “connected to,” “attached to,” or “linked to” another element or layer, it may be directly on, joined to, attached to, or linked to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly linked to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” vs. “directly between,” “adjacent” vs. “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0012] The terms first, second, third, etc., may be used herein to describe various elements, components, areas, layers, and / or segments. These elements, components, areas, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, area, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as “first,” “second,” and other numerical terms do not imply order or sequence. Therefore, without departing from the teachings of the example configuration, the first element, component, area, layer, or segment discussed below may be referred to as the second element, component, area, layer, or segment.

[0013] In one configuration, an adjustment system for footwear includes: a body attached to an outer surface of the footwear and including a plurality of segments cooperating to define a cavity, the body being movable between an extended state and a collapsed state; and a bladder attached to the footwear and defining an internal cavity in fluid communication with the cavity, the bladder being movable from a relaxed state to a contracted state when the body moves from a collapsed state to an extended state.

[0014] The adjustment system may include one or more of the following optional features. For example, when the body is in a folded state, multiple segments may be nested within each other. Additionally or alternatively, the multiple segments may provide an accordion shape to the body. The body may include multiple fold lines separating adjacent segments, such that the multiple fold lines cause the multiple segments to fold over each other as the body moves from the extended state to the folded state.

[0015] In one configuration, when the capsule moves from a relaxed state to a contracted state, a certain volume of fluid can be removed from the capsule's internal cavity. When the body moves from the folded state to the extended state, that volume of fluid can move from the internal cavity and enter the body's chamber.

[0016] The body can be biased into a folded state. An elastic member can surround at least a portion of the body and can be configured to bias the body into a folded state. Additionally or alternatively, each of the plurality of segments can each include a series of substantially flat surfaces defining the shape of each segment, the substantially flat surfaces being substantially parallel to each other when the body is in the folded state.

[0017] Footwear products can incorporate adjustment systems.

[0018] In another configuration, a footwear article includes: an upper; a body attached to the upper and including a plurality of substantially flat surfaces cooperating to define a cavity, the body being movable between an extended state and a folded state; and a bladder attached to the upper and defining an internal cavity in fluid communication with the cavity, the bladder being movable from a relaxed state to a contracted state when the body moves from a folded state to an extended state.

[0019] The adjustment system may include one or more of the following optional features. For example, multiple substantially flat surfaces may cooperate to provide multiple segments for the body, each segment containing at least two substantially flat surfaces. When the body is in a folded state, the multiple segments may nest with each other. Additionally or alternatively, the multiple substantially flat surfaces may provide an accordion shape for the body.

[0020] In one configuration, the body may include multiple fold lines separating adjacent, substantially flat surfaces, such that the multiple substantially flat surfaces fold over each other as the body moves from the extended state to the folded state. Additionally or alternatively, a volume of fluid may be removed from the internal cavity of the bladder as it moves from the relaxed state to the contracted state. When the body moves from the folded state to the extended state, this volume of fluid may move from the internal cavity and into the chamber of the body.

[0021] The body can be biased into a folded state. An elastic member can surround at least a portion of the body and can be configured to bias the body into a folded state. Additionally or alternatively, multiple substantially flat surfaces can stack on top of each other as the body moves from an extended state to a folded state.

[0022] Details of one or more embodiments of this disclosure are set forth in the accompanying drawings and the following description. Other aspects, features, and advantages will become apparent from the specification, drawings, and claims.

[0023] refer to Figures 1A to 4 The footwear article 10 includes an adjustment system 100 attached to an upper 200. The footwear article 10 also includes a sole structure 300 attached to the upper 200 to provide support along the ground contact surface of the footwear 10. The footwear article 10 also includes a front end 12 associated with the foremost point of the footwear 10 and a rear end 14 corresponding to the rearmost point of the footwear 10. The longitudinal axis A of the shoe 10 is... 10 The length of the shoe 10 extends parallel to the ground from the front end 12 to the rear end 14, and the shoe 10 is typically divided into an inner side 16 and an outer side 18. Thus, the inner side 16 and the outer side 18 correspond to opposite sides of the shoe, respectively, and extend from the front end 12 to the rear end 14. As used herein, the longitudinal direction refers to the direction extending from the front end 12 to the rear end 14, while the lateral direction refers to the direction transverse to the longitudinal direction and extending from the inner side 16 to the outer side 18. The lateral direction can also refer to the direction extending from the ground surface to the uppermost part of the upper 200 of the shoe.

[0024] Footwear 10 can be divided into one or more zones. These zones may include a forefoot zone 20, a midfoot zone 22, and a heel zone 24. The forefoot zone 20 is associated with the phalanges and metatarsals of the foot. The midfoot zone 22 may correspond to the arch region of the foot, and the heel zone 24 may correspond to the posterior portion of the foot, including the calcaneus.

[0025] Still referencing Figures 1A to 4The upper 200 includes an inner surface defining an interior space 202 and an ankle opening 204, which are configured to receive and secure the foot for support on the sole structure 300. The upper 200 and its components can be described as including various sub-components or areas. For example, the upper 200 includes a toe 206 disposed at the forefoot 12 and extending from the medial side 16 to the lateral side 18 at the toe. A pair of quarter plates 208 extend from the toe 206 on opposite sides of the interior space 202 in the midfoot area 22. A throat 210 extends through the top of the upper 200 and includes a dorsal area between the quarter plates 208 extending from the toe 206 to the ankle opening 204. In the illustrated example, the throat 210 at least partially includes a flexible area 212, which will be described in more detail below, whereby the flexible area 212 can expand and contract around the ankle to hold the foot within the footwear 10. The flexible region 212 extends in the dorsalis pedis region between the opposing quarter pieces 208 to cover the internal space 202. The flexible region 212 may be formed of a material having a higher elastic modulus than the material forming the quarter pieces 208, so that the flexible region 212 can move between an expanded state and a contracted state.

[0026] The upper 200 of the footwear article 10 can also be described as including a heel side plate 214 extending along the inner side 16 and outer side 18 of the upper 200 through the heel area 24. For example... Figure 1A and Figure 1B As shown, the adjustment system 100 can be positioned at the rear end 14 of the footwear 10 and can be attached to the heel side plate 214 of the upper 200 to define fluid communication between the adjustment system 100 and the flexible area 212 of the upper 200.

[0027] Suitable materials for the upper 200 may include, but are not limited to, mesh textiles, foam, leather, and synthetic leather. Materials can be selected and positioned to impart properties of durability, breathability, abrasion resistance, flexibility, and comfort. Example upper 200 may include a lining comprising one or more substantially inelastic or non-stretchable materials and / or a combination of one or more substantially elastic or stretchable materials disposed in different areas of the upper 200 to facilitate movement of the footwear article 10 between a tightened and loosened state. One or more elastic materials may include any combination of one or more elastic fabrics, such as, but not limited to, spandex, elastic fibers, rubber, or neoprene. One or more inelastic materials may include any combination of one or more thermoplastic polyurethanes, nylon, leather, vinyl, or another material / fabric that does not impart elastic properties. The flexible zone 212 also facilitates movement of the footwear article 10 between a tightened and loosened state by contraction and release at the throat 210 of the upper 200. Although the flexible area 212 is depicted as defining the throat 210 of the upper 200, it is conceivable that any part of the upper 200 may be configured with the flexible area 212. For example, the entire upper 200 may be composed of the flexible area 212.

[0028] Also refer to Figure 1A and Figure 1B The flexible region 212 is configured as a movable sac 216 comprising a first membrane or barrier layer 218 and a second membrane or barrier layer 218. The first barrier layer 218 and the second barrier layer 218 cooperate to define an internal cavity 220 of the sac 216, which is in fluid communication with the conditioning system 100, as described in more detail below. The sac 216 of the flexible region 212 can be formed by bonding the first barrier layer 218 and the second barrier layer 218 using a radio frequency (RF) welding process. However, it is also conceivable that the sac 216 can be formed via a thermoforming or blow molding process, such that the sac 216 may be without peripheral seams.

[0029] The pouch 216 may include a padding structure configured to provide structural support for the first and second barrier layers 218 during the transition of the flexible region 212 from a relaxed to a contracted state. For example, the padding structure may help maintain the structural integrity of the flexible region 212 to increase stability at the throat 210 around the ankle. Alternatively or additionally, the flexible region 212 may be without a padding structure, such that the first and second barrier layers 218 have a geometry that favors the structural integrity of the flexible region 212 in a vacuum. The padding material may also provide structural support when the flexible region 212 contracts to minimize folding of the flexible region 212. Although the flexible region 212 is configured to contract toward the foot, it also provides structural support to the foot during use.

[0030] As used herein, the term "barrier layer" (e.g., barrier layer 218) encompasses both single-layer and multilayer films. In some embodiments, one or both of the barrier layers 218 are each formed from a single-layer film (monolayer) (e.g., RF welding, thermoforming, or blow molding). In other embodiments, one or both of the barrier layers 218 are each formed from a multilayer film (multiple sublayers) (e.g., RF welding, thermoforming, or blow molding). In any one aspect, each layer or sublayer may have a film thickness ranging from about 0.2 micrometers to about 1 millimeter. In another embodiment, the film thickness of each layer or sublayer may range from about 0.5 micrometers to about 500 micrometers. In yet another embodiment, the film thickness of each layer or sublayer may range from about 1 micrometer to about 100 micrometers. In one configuration, the barrier layer 218 has a thickness of about 0.5 millimeters to about 0.7 millimeters. In another configuration, the barrier layer 218 has a thickness of about 0.64 millimeters to about 0.76 millimeters.

[0031] One or both of the barrier layers 218 can be independently transparent, translucent, and / or opaque. As used herein, the term "transparent" for a barrier layer means that light passes through the barrier layer in a substantially straight line, and an observer can see through the barrier layer. In contrast, with an opaque barrier layer, light does not pass through the barrier layer, and one cannot see clearly through the barrier layer at all. A translucent barrier layer falls between a transparent barrier layer and an opaque barrier layer because light passes through the translucent layer, but some light is scattered, making it impossible for an observer to see clearly through that layer.

[0032] The barrier layer 218 may be formed from an elastomeric material comprising one or more thermoplastic polymers and / or one or more crosslinkable polymers. In one aspect, the elastomeric material may comprise one or more thermoplastic elastomer materials, such as one or more thermoplastic polyurethane (TPU) copolymers, one or more ethylene-vinyl alcohol (EVOH) copolymers, etc.

[0033] As used herein, “polyurethane” refers to copolymers (including oligomers) containing urethane groups (-N(C=O)O-). In addition to urethane groups, these polyurethanes may contain additional groups such as esters, ethers, ureas, urethane esters, biuret, carbodiimides, oxazolidinyl esters, isocyanurates, diuretes, carbonates, etc. In one aspect, one or more polyurethanes can be produced by polymerizing one or more isocyanates with one or more polyols to produce copolymer chains having (-N(C=O)O-) bonds.

[0034] Examples of suitable isocyanates for generating polyurethane copolymer chains include diisocyanates, such as aromatic diisocyanates, aliphatic diisocyanates, and combinations thereof. Examples of suitable aromatic diisocyanates include toluene diisocyanate (TDI), adducts of TDI and trimethylolpropane (TMP), methylene diphenyl diisocyanate (MDI), xylene diisocyanate (XDI), tetramethylphenyl dimethylene diisocyanate (TMXDI), hydrogenated xylene diisocyanate (HXDI), naphthalene 1,5-diisocyanate (NDI), 1,5-tetrahydronaphthalene diisocyanate, p-phenylene diisocyanate (PPDI), 3,3'-dimethyldiphenyl-4,4'-diisocyanate (DDDI), 4,4'-dibenzyl diisocyanate (DBDI), 4-chloro-1,3-phenylene diisocyanate, and combinations thereof. In some embodiments, the copolymer chain is substantially free of aromatic groups.

[0035] In certain aspects, the polyurethane polymer chain is generated from diisocyanates including HMDI, TDI, MDI, H12 aliphatic compounds, and combinations thereof. In one aspect, thermoplastic TPUs may include polyester-based TPUs, polyether-based TPUs, polycaprolactone-based TPUs, polycarbonate-based TPUs, polysiloxane-based TPUs, or combinations thereof.

[0036] On the other hand, the polymer layer can be formed from one or more of the following: EVOH copolymers, poly(vinyl chloride), polyvinylidene ethylene polymers and copolymers (e.g., polyvinylidene chloride), polyamides (e.g., amorphous polyamides), amide-based copolymers, acrylonitrile polymers (e.g., acrylonitrile-methyl acrylate copolymers), polyethylene terephthalate, polyetherimide, polyacrylamide, nylon, and other polymeric materials known to have relatively low gas permeability. Blends of these materials, as well as blends with the TPU copolymers described herein (and optionally combinations of polyamides and crystalline polymers), are also suitable.

[0037] Barrier layer 218 may include two or more sublayers (multilayer films), such as those shown in U.S. Patent Nos. 5,713,141 and 5,952,065 to Mitchell et al., the disclosures of which are incorporated herein by reference in their entirety. In embodiments where barrier layer 218 includes two or more sublayers, suitable examples of multilayer films include microlayer films, such as those disclosed in U.S. Patent No. 6,582,786 to Bonk et al., which is incorporated herein by reference in its entirety. In further embodiments, barrier layer 218 may each independently comprise alternating sublayers of one or more TPU copolymer materials and one or more EVOH copolymer materials, wherein the total number of sublayers in each of barrier layers 218 includes at least four (4) sublayers, at least ten (10) sublayers, at least twenty (20) sublayers, at least forty (40) sublayers, and / or at least sixty (60) sublayers.

[0038] The capsule 216 can be produced from the barrier layer 218 using any suitable technique, such as thermoforming (e.g., vacuum thermoforming), blow molding, extrusion, injection molding, vacuum molding, rotational molding, transfer molding, pressure molding, heat sealing, casting, low-pressure casting, rotational casting, reaction injection molding, radio frequency (RF) welding, etc. In one aspect, the barrier layer 218 can be produced by co-extrusion followed by vacuum thermoforming to produce the capsule 216.

[0039] In some embodiments, the nitrogen permeability of the bladder 216 is at least about ten (10) times lower than that of a butyl rubber layer of substantially the same size. In one aspect, for an average membrane thickness of 500 micrometers (based on the thickness of the barrier layer 218), the bladder 216 has a density of 15 cubic centimeters per square meter per atmosphere per day (cm²). 3 / m 2 •atm•day) or less nitrogen permeability. On the other hand, the permeability is 10 cm. 3 / m 2 • atm • day or less, 5 cm 3 / m 2 • atm • day or less, or 1 cm 3 / m 2 • atm • day or less.

[0040] In the illustrated example, the flexible region 212 includes multiple compression lines 222 that are pulled together when a vacuum is drawn into the internal cavity 220 of the flexible region 212. The flexible region 212 can operate between a relaxed state and a contracted state, and contracts along the z-axis (Z) under vacuum. Figure 1BThe degree of contraction along the z-axis (Z) can be variable and depends on the vacuum drawn by the adjustment system 100. For example, the flexible zone 212 can be partially contracted to provide a customized fit for a particular wearer. The customized fit can depend on the wearer and / or additional articles used in conjunction with the footwear article 10. For example, the customization of the flexible zone 212 can facilitate the accommodation of articles including, but not limited to, socks of different thicknesses, sports bandages, ankle supports, and / or any other articles that can be positioned between the flexible zone 212 and the wearer's ankle or foot. When a vacuum is applied to the flexible zone 212, the first and second barrier layers 218 are pulled together, thereby reducing the internal volume of the bladder 216, resulting in increased stiffness of the flexible zone 212 in the contracted state. In other words, the adjustment system 100 draws fluid from the internal cavity 220 of the bladder 216 into the foldable body 102 of the adjustment system 100 to contract the flexible zone 212 around the ankle and foot.

[0041] Now for reference Figures 3 to 7 The adjustment system 100 can be positioned along the footwear 10 at any actual location in fluid communication with the upper 200. Figure 3 The illustration shows an adjustment system 100 attached to the heel side plate 214 of the upper 200 at the rear end 14 of the footwear 10. In some aspects, the adjustment system 100 may be attached to the toe 206 of the upper 200, such as... Figure 4 As shown. The adjustment system 100 is configured to allow the flexible zone 212 to transition between a relaxed state and a contracted state via engagement between the wearer and the adjustment system 100. As described above, the adjustment system 100 includes a foldable body 102 operable between a compressed state and an extended state and attached to the upper 200. The adjustment system 100 also includes an elastomeric member 104 attached to the foldable body 102 and the upper 200.

[0042] The foldable body 102 transitions between a compressed and extended state via actuation of the elastomeric member 104, which can at least partially retain the foldable body 102 against the upper 200 in the compressed state. The elastomeric member 104 may extend over a first end 106a of the foldable body 102, wherein a second end 106b of the elastomeric member 104 is attached to and in fluid communication with the upper 200. In some configurations, the elastomeric member 104 may include an actuating element 104a extending from the first end 106a of the foldable body 102 and a retaining element 104b extending between the first end 106a of the foldable body 102 and the upper 200 and disposed along the length L of the foldable body 102. For example, the retaining element 104b is located at... Figure 9The diagram shows the foldable body 102 being attached to the shoe upper 200 and held in a compressed state. In contrast, the actuating element 104a can be used to move the foldable body 102 to an extended state and to draw a vacuum within the internal cavity 220 of the flexible region 212.

[0043] Still referencing Figures 3 to 7 The elastomeric member 104 may be a highly tensile elastic strip to hold the foldable body 102 in a compressed state and define the low profile of the adjustment system 100. Compared to the actuating element 104a, the holding element 104b may have a greater degree of tension to facilitate vacuum suction from the foldable body 102 when the wearer extends the foldable body 102 from a compressed state to an extended state via the actuating element 104a. In some aspects, the elastomeric member 104 may extend along the central region of the foldable body 102 to distribute tensile and compressive forces equally across the foldable body 102. In other instances, the elastomeric member 104 may have a thickness approximately equal to the thickness of the foldable body 102. The thickness of the elastomeric member 104 may depend on the elastomeric properties of the elastomeric member 104, such that a greater thickness of the elastomeric member 104 may result in an increase in the stiffness of the elastomeric member 104. When calibrating the adjustment system 100 to control the rate of vacuum suction, the degree of rigidity can be taken into account, whereby the higher rigidity of the elastomer member 104 can help to perform slower and more efficient vacuum suction of the flexible region 212 through the foldable body 102.

[0044] The adjustment system 100 also includes a first suction valve 108a and a second discharge valve 108b. The first suction valve 108a provides fluid communication between the flexible area 212 of the upper 200 and the foldable body 102, and the second discharge valve 108b provides fluid communication between the foldable body 102 and the surrounding environment. Figure 1AAs shown, the first valve 108a is located on one of the heel side panels 214, near the flexible area 212 on the outer side 18 of the footwear 10. However, the first valve 108a can be located at any feasible location along the upper 200 to provide fluid communication between the adjustment system 100 and the flexible area 212 of the upper 200. For example, the first valve 108a and the second valve 108b can be coupled to the foldable body 102 at a second end 106b of the foldable body 102. In some configurations, valves 108a, 108b are check valves that facilitate unidirectional fluid communication from the flexible area 212 to the foldable body 102 and from the foldable body 102 to the surrounding environment. The adjustment system 100 may also include a spring-loaded release valve 110 configured to draw air into the flexible area 212 and to change the flexible area 212 from a compressed state to an expanded state, as described in more detail below. Therefore, valves 108a and 108b facilitate vacuum suction in the flexible region 212, while releasing valve 110 returns the flexible region to a relaxed state. The process described herein is referenced in [reference needed]. Figures 9 to 11 Describe it.

[0045] Continue to refer to Figures 3 to 7 The foldable body 102 is formed from a single sheet of material, which is processed into multiple complex folds 120 using various origami techniques. A complex fold is defined as a fold that is flattened to form more than one crease or utilizes more than one crease in a folding sequence. As described below, the complex folds 120 may include compression folds 122 and creases 124 to define the foldable body 102. The material used for the foldable body 102 may include, but is not limited to, TPU or polyurethane (PU) film layers with thicknesses ranging from about 0.2 mm to about 2.0 mm. The TPU material may have a hardness ranging from 45 Shore A to 95 Shore A, and more particularly from 45 Shore A to 65 Shore A. In one configuration, the TPU material has a hardness of 65 Shore A. The foldable body 102 may be extruded and laminated with a hot-melt adhesive to promote bonding of the material. In a structured state, the material used for the foldable body 102 may have a thickness ranging from about 0.6 mm to about 2.0 mm. However, the thickness can range from less than 0.6 mm to greater than 2.0 mm. During the forming process, complex folds 120 are defined along the material to ultimately form... Figure 5A The three-dimensional configuration of the foldable body 102 is shown.

[0046] Although the foldable body 102 is defined by complex folds 120, it is conceivable that the edges of the material can be joined together via high-frequency welding to form the three-dimensional structure of the foldable body 102. Other methods are envisioned for defining the three-dimensional structure, including but not limited to injection molding, blow molding, bonding, or thermoforming, and any other feasible molding process. The foldable feature of the foldable body 102 is defined as a result of various folds 120, 122, and creases 124 defined along the material, which cooperate to provide an expandable and foldable structure for the foldable body 102.

[0047] The complex fold 120 is defined along the length L and width W of the material and may include various folding geometries that cooperate to define a compression fold 122 of the foldable body 102. The compression fold 122 is defined as the complex fold 120, where a previously established grid of intersecting creases 124 is simultaneously used to fold the corresponding segments 126 of the foldable body 102. In other words, the compression fold 122 is a merging of the complex fold 120, which ultimately benefits the foldable body 102's folding and low profile in a compressed state. The foldable body 102 can be segmented into segments 126 defined by creases 124 and compression folds 122 defined along the material forming the foldable body 102. In two dimensions, each segment 126 has a generally rectangular shape to extract a larger volume of air from the bladder 216 during use and, when compressed, causes the entire foldable body 102 to shrink back to a flat, low-profile state. For example, the foldable body 102 in… Figure 5A The diagram shows the first length L1 in the compressed state, which is less than the second length L2 of the foldable body 102 in the extended state.

[0048] In addition to expansion and contraction between extended and compressed states, the shape of each corresponding segment 126 also helps to minimize the length L2 of the foldable body 102 to conform to the footwear 10. The segments 126 can be arranged in a continuous linear fashion along the length L of the foldable body 102. In some respects, the creases 124 can be configured in such a way that the nesting configuration of the segments 126 is defined by indenting the edges of the segments 126 inward to define cavities accommodating adjacent segments 126. The nesting configuration of the segments 126 can further promote a low profile of the foldable body 102 and conformability to the footwear 10, minimizing the adjustment system 100 as a whole.

[0049] As a result of origami techniques, it is generally envisioned that the foldable body 102 can have a three-dimensional geometry, such that segments 126 of a plurality of segments 126 cooperate to define a three-dimensional modular assembly by the same segments or modules. Furthermore, in some configurations, segments 126 may be reduced in size along the length L of the foldable body 102 to facilitate nesting of segments 126 and thus facilitate storage of the foldable body 102. In doing so, nested segments 126 provide a low profile for the foldable body 102 in a compressed state. As described, the foldable body 102 can be defined as having an accordion configuration operable between a compressed state and an extended state.

[0050] For details, please refer to the following: Figure 5A and Figure 5B The foldable body 102 can operate as a pump, which is configured to draw a vacuum within the flexible area 212 of the shoe upper 200. For example... Figure 5A As shown, multiple segments 126 extend along the length L of the foldable body 102 and are interconnected to define an origami or accordion configuration. Each segment 126 of the foldable body 102 includes a first hinge group 130a and a second hinge group 130b separated by recessed sidewalls 150. As described above, the foldable body 102 is formed from a single-layer material sheet having complex folds 120 and creases 124 corresponding to the first hinge group 130a and the second hinge group 130b. For example, the first hinge group 130a and the second hinge group 130b are defined by the complex folds 120, wherein the sidewalls 150 are at least partially defined by the creases 124. Each of the first hinge group 130a and the second hinge group 130b is defined by opposing interface surfaces 132a, 132b. In the compressed state of the foldable body 102, interface surfaces 132a and 132b are brought close to each other, causing hinge assemblies 130a and 130b to be compressed to close the space between interface surfaces 132a and 132b. When the foldable body 102 is extended, interface surfaces 132a and 132b are pulled apart to define an expansion angle 136 at the apex 156 of the respective hinge assemblies 130a and 130b. It is conceivable that the expansion angle 136 can vary depending on the degree of vacuum suction, allowing the wearer to partially extend the foldable body 102 to define a small expansion angle. The expansion angle can also vary along the length L of the foldable body 102, such that the expansion angle of the hinge assemblies 130a and 130b near the first end 106a of the foldable body 102 can be greater than the expansion angle of the hinge assemblies 130a and 130b near the opposite second end 106b.

[0051] Also refer to Figure 5A and Figure 5BEach recessed sidewall 150 is defined by a complex fold 120, which may also be defined by a longitudinal crease 152a and a transverse fold 152b. For example, the compression fold 122 of the complex fold 120 may also be defined by a longitudinal crease 152a, with each segment 126 of the foldable body 102 compressed around the longitudinal crease 152a, as further described below.

[0052] The longitudinal crease 152a and the transverse fold 152b further define a first surface 154a and a second surface 154b of each recessed sidewall 150, the first surface 154a and the second surface 154b being diametrically opposed to a third surface 154c and a fourth surface 154d. The longitudinal crease 152a extends along the y-axis (Y) between the first hinge group 130a and the second hinge group 130b, while the transverse fold 152b extends along the x-axis (X) between the first end 106a and the second end 106b of the foldable body 102. As described above, a crease is a fold along which a structure (e.g., the foldable body 102) is configured to fold. In contrast, a fold, while including a crease, is a broader representation of a structural fold that also includes a three-dimensional structure. Here, the transverse fold 152b provides structural stability to the foldable body 102, while the longitudinal crease 152a is configured to fold and compress the foldable body 102.

[0053] Each of the first surface 154a, the second surface 154b, the third surface 154c, and the fourth surface 154d is illustrated as having a polygonal shape, wherein each is adjacent at the vertex 156 of the hinge groups 130a, 130b of the corresponding segment 126. In other words, surfaces 154a to 154d converge at a center point defined by the intersection of the longitudinal crease 152a and the transverse fold 152b. The third surface 154c and the fourth surface 154d are depicted as inversions of the first surface 154a and the second surface 154b, respectively, because the third surface 154c and the fourth surface 154d are mirror images of the first surface 154a and the second surface 154b with respect to the transverse fold 152b. When the foldable body 102 is in a compressed state, the first surface 154a and the second surface 154b are in contact with each other, and the third surface 154c and the fourth surface 154d are in contact with each other, such that the recessed sidewall 150 is folded along the longitudinal crease 152a and substantially flattened along the transverse fold 152b.

[0054] In the extended state of the foldable body 102, the lateral fold 152b and longitudinal crease 152a are generally recessed to define a recessed sidewall 150. When the foldable body 102 returns to the compressed state, the recessed sidewall 150 folds generally along the longitudinal crease 152a and at least partially straightens along the lateral fold 152b to define a generally flat configuration of the sidewall 150. The recessed structure of the recessed sidewall 150 facilitates the movement of the foldable body 102 from the compressed state to the extended state while minimizing the folding of the foldable body 102 about the x-axis (X). Therefore, the lateral fold 152b provides flexibility and structural integrity to the foldable body 102. As described above, the lateral fold 152b and longitudinal crease 152a converge at the center point of the sidewall 150, and the sidewall 150 changes from a recessed structure to a generally flat structure as the foldable body 102 moves between the extended and compressed states.

[0055] Continue to refer to Figure 5A and Figure 5B The geometry of each of surfaces 154a to 154d forms a protrusion 158 along a first side 112a and a second side 112b of the foldable body 102. Each protrusion 158 is interposed with each longitudinal crease 152a, such that the foldable body 102 is configured to fold along the y-axis (Y) at the longitudinal crease 152a to define a compressed state of the foldable body 102. Referring specifically to the recessed sidewall 150, each surface 154a to 154d has an outer crease 124a defining a portion of the surface 154a to 154d near the protrusion 158 and an inner crease 124b defining a portion of the longitudinal crease 152a. Figure 5A As shown, the creases 124 on each corresponding surface taper from the inner crease 124a toward the outer crease 124b, such that surfaces 154a to 154d converge at points corresponding to the hinge groups 130a, 130b of the foldable body 102. Each of surfaces 154a to 154d defines an angle between adjacent surfaces 154a to 154d surrounding one of the longitudinal crease 152a and the transverse fold 152b. For example, an angle is defined between the first surface 154a and the second surface 154a around the longitudinal crease 152a, and this angle is smaller when the foldable body 102 is in a compressed state compared to the extended state. In contrast, when the foldable body 102 is in a compressed state, the angle defined between the first surface 154a and the third surface 154c around the transverse fold 152b can be larger compared to the extended state.

[0056] Now for reference Figures 6 to 8The foldable body 102 may also include a filling material 170 having a pattern that substantially corresponds to the pattern of the foldable body 102. For example, as shown, the filling material 170 includes a first row of herringbone folds 172a and a second row of herringbone folds 172b, wherein an elongated fold 174 extends through the apex 176 of each of the first row of herringbone folds 172a and the second row of herringbone folds 172b. The pre-folded state of the filling material 170 maintains the separation between the herringbone folds 172a, 172b and the elongated fold 174, such that in the final filling configuration, the filling material 170 defined by the herringbone folds 172a, 172b remains separated from adjacent herringbone folds in the herringbone folds 172a, 172b. For example, the first row of herringbone folds 172a includes a first plurality of angular segments 178a, and the second row of herringbone folds 172b includes a second plurality of angular segments 178b.

[0057] Each of the angular segments 178a and 178b is separated by an elongated fold 174 to maintain separation between each angular segment 178a and 178b. This separation between the angular segments 178a and 178b via the elongated fold 174 results in each of the hinge assemblies 130a and 130b of the foldable body 102 being without filler material 170 to promote deflection at each of the hinge assemblies 130a and 130b during the expansion and contraction of the foldable body 102. Filler material 170 is disposed along the recessed sidewall 150 within the internal cavity 114 of the foldable body 102 to provide structural stability to the foldable body 102 and to help maintain the structural integrity of the foldable body 102 under compression. However, in some respects, the foldable body 102 may be completely without filler.

[0058] The material used for filler 170 may include, but is not limited to, paper, wood, nylon, PET, PP, TPU, and any feasible material having properties sufficient to bend or flex along sidewall 150. Filler 170 may have a thickness ranging from about 0.2 mm to about 2.0 mm. However, it is also contemplated that the thickness of filler 170 may be less than 0.2 mm or greater than about 2.0 mm. In some instances, a soft material (e.g., TPU material) may be used as filler 170, wherein sidewall 150 has a thickness of about 0.5 mm. Filler 170 may be an extruded film that is die-cut to define the shape of filler 170, wherein injection is used to define connecting bridges from one side of the material to the other.

[0059] For details, please refer to the following: Figures 9 to 12 The foldable body 102 is depicted in a compressed state ( Figure 9 ) and extended state ( Figure 12The transition between the two states is as follows: In operation, the wearer can use the actuating element 104a to extend the foldable body 102, thereby stretching the retaining element 104b and expanding the foldable body 102. When the foldable body 102 expands, the suction valve 108a opens to the open state due to the pressure change within the internal chamber 114 of the foldable body 102. At least a partial vacuum is drawn into the internal cavity 220 of the upper 200 via the suction valve 108a and the expansion of the foldable body 102. The one-way configuration of the suction valve 108a isolates the fluid communication from the internal chamber 114 of the foldable body 102 back to the internal cavity 220 of the flexible region 212, maintaining the flexible region 212 in a contracted state. For example, once a vacuum is drawn into the internal cavity 220 of the flexible region 212 while the foldable body 102 is in the extended state, the suction valve 108a closes to prevent fluid backflow into the internal cavity 220 of the flexible region 212. When the actuating element 104a is pulled, the wearer can selectively adjust the vacuum level of the flexible area 212 according to the force and degree of extension of the foldable body 102. For example, the wearer can slowly extend the foldable body 102, resulting in a slower vacuum suction, which can advantageously help to customize the vacuum pressure within the flexible area 212 to achieve a customized fit of the upper 200. In contrast, the wearer can quickly and repeatedly extend the foldable body 102 to cause rapid and continuous changes in the flexible area, thereby achieving a customized fit in a shorter time period.

[0060] Once customized compression of the flexible zone 212 is achieved, the wearer can release the actuation element 104a, and the retaining element 104b will compress the foldable body 102 and release the drawn-in fluid from the internal chamber 114. The fluid drawn from the flexible zone 212 via the suction valve 108a is held in the extended state within the internal chamber 114 of the foldable body 102 and released via the discharge valve 108b during compression of the foldable body 102. Upon release of the actuation element 104a, the foldable body 102 retracts via the retaining element 104b, automatically transitioning to a compressed state. The momentum from the retraction of the foldable body 102 forces the fluid out of the discharge valve 108b and into the surrounding environment. In some respects, the wearer can press on the foldable body 102 to further ensure fluid discharge from the internal chamber 114. In other configurations, the wearer can draw a vacuum within the flexible region 212 by pulling the elastomeric member 104 and can expel fluid from the internal chamber 114 by releasing the elastomeric member 104. As described above, in some configurations, the elastomeric member 104 may include an actuating element 104a and a retaining element 104b.

[0061] The adjustment system 100 also includes a release valve 110, which the wearer can use to return the flexible zone 212 to a relaxed state. The release valve 110 is a one-way valve configured to draw fluid from the surrounding environment into the internal cavity 220 of the flexible zone 212. The fluid causes the flexible zone 212 to transition from a contracted state to a relaxed state. The wearer can selectively use the release valve 110 to further customize the fit of the upper 200, and in some respects, can alternate between drawing a vacuum within the flexible zone 212 via the foldable body 102 and releasing the vacuum via the release valve 110. Therefore, the adjustment system 100 and the flexible zone 212 advantageously help the wearer customize the fit of the upper 200 to increase the versatility and fit of the footwear 10. Furthermore, the compressed state and origami structure of the foldable body 102 advantageously provide a low profile for the adjustment system 100 to maintain the streamlined structure of the footwear 10.

[0062] Special Reference Figures 13A to 15 A foldable body 102a is provided. Given the substantial structural and functional similarity of the components associated with the foldable body 102, the same reference numerals, including alphanumeric extensions, are used to identify those components that have been modified.

[0063] Figures 13A to 15 The foldable body 102a is typically configured in an expanded state ( Figure 13A ) and compression state ( Figure 13B The internal chambers 114a can be moved between the two chambers to selectively increase and decrease their volume, thereby drawing in a vacuum and expelling airflow, respectively. The foldable body 102a of this example includes a central main chamber 116 and a pair of secondary chambers 118 located at opposite ends of the main chamber 116. The main chamber 116 and the secondary chambers 118 cooperate to define the total volume of the internal chambers 114a.

[0064] The foldable body 102a can be formed as a hollow body including a pair of foldable shells 128 connected together along a peripheral seam at the middle portion of the foldable body 102a. For example, the foldable body 102a includes a pair of identical shells 128, wherein each shell 128 defines a portion of a main chamber 116 and one of a secondary chamber 118. Thus, the shells 128 cooperate to define opposite halves of the foldable body 102a. In the illustrated example, each shell 128 is a molded part, whereby the features of the secondary chamber 118 are integrally molded together and integrally molded with a portion of the main chamber 116.

[0065] In the illustrated example, the main chamber 116 is configured as a double-truncated conical structure. In other words, the main chamber 116 is defined by a pair of opposing main sidewalls 138, each having a truncated conical shape, whereby the diameter D of each main sidewall 138 is...138 Along the longitudinal axis A of the foldable body 102a 102a The direction gradually decreases from the proximal first end 140 to the distal second end 142. Therefore, as Figure 15 As shown, the proximal first end 140 of the first sidewall 138 of the main chamber 116 faces and is attached to the proximal first end 140 of the second sidewall 138 of the main chamber 116. As shown, the first ends 140 of the first main sidewalls 138 can be connected to each other along a peripheral flange 144. In particular, the peripheral flange 144 extends radially outward from the proximal first end 140 of each main sidewall 138 and provides a welding interface for connecting the first ends 140 of the main sidewalls 138 to each other.

[0066] Similar to the main chamber 116, each of the secondary chambers 118 is configured as a truncated conical structure disposed at the distal second end 142 of each of the main sidewalls 138 of the main chamber 116. Therefore, the foldable body 102a includes a first secondary chamber 118 disposed at the distal second end 142 of the first main sidewall 138 of the main chamber 116 and another secondary chamber 118 disposed at the distal second end 142 of the other main sidewall 138 of the main chamber 116. While the illustrated example shows a single secondary chamber 118 at each end of the main chamber 116, it should be understood that any number of secondary chambers 118 may be included at each end of the main chamber 116 depending on the desired volume of the internal chambers 114a of the foldable body 102a. For example, one or both ends of the foldable body 102a may include multiple secondary chambers 118.

[0067] As shown in the figure, each sub-chamber 118 is defined by a pair of opposing truncated conical sub-sidewalls 146, 148, each sub-sidewall 146, 148 along the longitudinal axis A of the foldable body 102a. 102a The direction has a gradually decreasing diameter D 146 D 148 Specifically, each secondary chamber 118 includes a proximal sidewall 146 extending from the distal second end 142 of one of the main sidewalls 138 of the main chamber 116, and a distal sidewall 148 extending from the proximal sidewall 146. In other words, the proximal sidewall 146 of each secondary chamber 118 is close to or adjacent to the main chamber 116, and the distal sidewall 148 of each secondary chamber 118 is distant from or spaced apart from the main chamber 116. The diameter D of each proximal sidewall 146 is... 146 Along longitudinal axis A 102a The direction increases from the distal second end 142 of the sidewall 138 to the crease or flexible joint 147 formed between the proximal sidewall 146 and the distal sidewall 148. Conversely, the diameter D of the distal sidewall 148... 148 Along longitudinal axis A 102aThe direction decreases from the flexible joint 147 to the terminal 149 of the secondary chamber 118.

[0068] In the illustrated example, the secondary sidewalls 146 and 148 each form a maximum diameter D at the flexible joint 147. 146 D 148 The maximum diameter D 146 D 148 The maximum diameter D of the main sidewall 138 at the proximal first end 140 of each main sidewall 138 is smaller than that of the main sidewall 138. 138 Therefore, the flexible joint 147 is radially offset inward relative to the proximal first end 140 of each corresponding main sidewall 138. Consequently, the flexible joint 147 is radially offset inward from the peripheral flange 144 of the foldable body 102a. This offset relationship between the flexible joint 147 and the peripheral flange 144 allows for offset along the longitudinal axis A. 102a The direction is directly approaching the opposite sides of the peripheral flange 144 to allow welding equipment to contact both sides of the peripheral flange 144 during manufacturing. When the foldable body 102a includes a plurality of sub-cavities 118 disposed on either side of the main cavity 116, the diameter of the sub-cavities 118 is selected such that the welding path to the peripheral flange 144 remains unobstructed. In other words, the diameter of each of the sub-cavities 118 will be smaller than the diameter of the peripheral flange 144.

[0069] In use, the foldable body 102a is in the expanded state ( Figure 13A ) and folded or compressed state ( Figure 13B The foldable body 102a moves between chambers 114a and 114a, drawing air in and out of chamber 114a via one or more of valves 108a and 108b configured in a manner similar to those previously discussed. Thus, the foldable body 102a moves to an expanded state to draw air into chamber 114a via the suction or draw-out valve 108a, and moves to a compressed or folded state to discharge air via the discharge valve 108b. Valves 108a and 108b may be integrated into one or both of the sub-chambers 118 of the foldable body 102a.

[0070] Special Reference Figures 16A to 18 A foldable body 102b is provided. Given the substantial structural and functional similarity of the components associated with the foldable body 102, the same reference numerals, including alphanumeric extensions, are used to identify those components that have been modified.

[0071] Figures 16A to 18 The foldable body 102b is typically configured in an expanded state ( Figure 16A ) and compression state ( Figure 16BThe internal chambers 114b can be moved between the two chambers to selectively increase and decrease their volume, thereby drawing in a vacuum and expelling airflow, respectively. The foldable body 102b of this example includes a central main chamber 116b and a pair of secondary chambers 118b located at opposite ends of the central main chamber 116b. The main chamber 116b and the secondary chambers 118b cooperate to define the total volume of the internal chambers 114b.

[0072] The foldable body 102b can be formed as a hollow body including a pair of foldable shells 128b connected together along a peripheral seam at the middle portion of the foldable body 102a. For example, the foldable body 102b includes a pair of identical shells 128b, wherein each shell 128b defines a portion of a main chamber 116b and one of a secondary chamber 118b. Thus, the shells 128b cooperate to define opposite halves of the foldable body 102b. In the illustrated example, each shell 128 is a molded part, whereby the features of the secondary chamber 118b are integrally molded together and integrally molded with a portion of the main chamber 116b.

[0073] In the illustrated example, the main chamber 116b is configured as a double-truncated conical structure. In other words, the main chamber 116b is defined by a pair of opposing main sidewalls 138b, each main sidewall 138b having a truncated conical shape, whereby the diameter D of each main sidewall 138b is... 138b Along the longitudinal axis A of the foldable body 102b 102b The direction gradually decreases from the proximal first end 140b to the distal second end 142b. Therefore, as Figure 18 As shown, the proximal first end 140b of the first main sidewall 138b of the main chamber 116b faces and is attached to the proximal first end 140b of the second main sidewall 138b of the main chamber 116b. As shown, the first ends 140b of the first main sidewalls 138b can be connected to each other along a peripheral flange 144b. Specifically, the peripheral flange 144b extends radially outward from the proximal first end 140b of each main sidewall 138b and provides a welding interface for connecting the first ends 140b of the main sidewalls 138b to each other.

[0074] Similar to the main chamber 116b, each of the secondary chambers 118b is configured as a truncated conical structure disposed at the distal second end 142b of each of the main sidewalls 138b of the main chamber 116b. Therefore, the foldable body 102a includes a first secondary chamber 118b disposed at the distal second end 142b of the first main sidewall 138b of the main chamber 116b and another secondary chamber 118b disposed at the distal second end 142b of the other main sidewall 138b of the main chamber 116b. While the illustrated example shows a single secondary chamber 118b at each end of the main chamber 116b, it should be understood that any number of secondary chambers 118b may be included at each end of the main chamber 116b, depending on the desired volume of the internal chambers 114b of the foldable body 102b. For example, one or both ends of the foldable body 102b may include multiple secondary chambers 118b.

[0075] As shown in the figure, each sub-chamber 118b is defined by a pair of opposing truncated conical sub-sidewalls 146b, 148b, each sub-sidewall 146b, 148b along the longitudinal axis A of the foldable body 102b. 102b The direction has a gradually decreasing diameter D 146b D 148b Specifically, each secondary chamber 118b includes a proximal sidewall 146b extending from the distal second end 142b of one of the main sidewalls 138b of the main chamber 116b, and a distal sidewall 148b extending from the proximal sidewall 146b. In other words, the proximal sidewall 146b of each secondary chamber 118b is close to or adjacent to the main chamber 116b, and the distal sidewall 148b of each secondary chamber 118b is distant from or spaced apart from the main chamber 116b. The diameter D of the proximal sidewall 146b is... 146b Along longitudinal axis A 102b The direction increases from the distal second end 142b of sidewall 138b to the crease or flexible joint 147b formed between proximal sidewall 146b and distal sidewall 148b. Conversely, the diameter D of distal sidewall 148b... 148b Along longitudinal axis A 102b The direction decreases from the flexible joint 147b to the terminal 149b of the secondary chamber 118b.

[0076] In the illustrated example, the secondary sidewalls 146b and 148b each have a maximum diameter D at the flexible joint 147b. 146b D 148b The maximum diameter D 146b D 148b The maximum diameter D at the proximal first end 140b of each main sidewall 138b is smaller than that of the main sidewall 138b. 138bTherefore, the flexible joint 147b is radially offset inward relative to the proximal first end 140b of each corresponding main sidewall 138b. Consequently, the flexible joint 147b is radially offset inward from the peripheral flange 144b of the foldable body 102b. The offset relationship between the flexible joint 147b and the peripheral flange 144b allows for offset along the longitudinal axis A. 102a The direction is directly close to the opposite sides of the peripheral flange 144b to allow the welding equipment to contact the sides of the peripheral flange 144b during manufacturing. When the foldable body 102a includes a plurality of sub-chambers 118b disposed on either side of the main chamber 116b, the diameter of the sub-chambers 118 is selected such that the welding passage to the peripheral flange 144b remains unobstructed.

[0077] In use, the foldable body 102b is in the expanded state ( Figure 16A ) and folded or compressed state ( Figure 16B The foldable body 102b moves between chambers 114b, drawing air into and expelling it through one or more of valves 108a and 108b configured in a manner similar to those previously discussed. Thus, the foldable body 102b moves to an expanded state to draw air into chamber 114a via the intake or suction valve 108a, and moves to a compressed or folded state to expel air via the exhaust valve 108b. Valves 108a and 108b may be integrated into one or both of the secondary chambers 118b of the foldable body 102b.

[0078] Special Reference Figures 19A to 21 A foldable body 102c is provided. Given the substantial structural and functional similarity of the components associated with the foldable body 102, the same reference numerals, including alphanumeric extensions, are used to identify those components that have been modified.

[0079] Figures 19A to 21 The foldable body 102c is typically configured in an expanded state ( Figure 19A ) and folded state ( Figure 19B The foldable body 102c of this example includes a main chamber 116c having a spiral profile extending continuously from a first end 106c to a second end 106d of the foldable body 102c. The main chamber 116c can be moved from an expanded state to draw air into the internal chamber 114c and to a folded state to discharge air from the internal chamber 114c.

[0080] The foldable body 102c can be formed as a hollow body including a continuous shell 128c. The shell 128c can be an integral body molded from an elastomeric material. In the illustrated example, the helical profile of the foldable body 102c is defined by a first sidewall 146c and a second sidewall 148c, which are joined together along an outer flexible joint 147c and an inner flexible joint 147d, and extend continuously along a helical path from the first end 106c to the second end 106d. Therefore, each of the sidewalls 146c, 146d and the flexible joints 147c, 147d extends continuously along the helical path to define the foldable body 102c. Figure 21 As best shown in the diagram, the first sidewall 146c is relative to the longitudinal axis A. 102c Oriented at an inclined angle, and extending from the outer first end 160c to the inner second end 161c. The second sidewall 148c is relative to the longitudinal axis A. 102c Oriented at opposite angles, and extending from the inner first end 162c to the outer second end 163c. As shown, the outer second end 163c of the second sidewall 148c is attached to the outer first end 160c of the first sidewall 146c at the outer flexible joint 147c. Similarly, the inner first end 162c of the second sidewall 148c is attached to the inner second end 161c of the first sidewall 146c at the inner flexible joint 147d. Thus, the sidewalls 146c, 148c and the flexible joints 147c, 147d are arranged alternately along the length of the foldable body 102c, whereby each sidewall 146c, 148c and the flexible joints 147c, 147d extend continuously along the circumference of the foldable body 102c along a spiral path.

[0081] In the illustrated example, the foldable body 102c has a large diameter D. 102c-1 and small diameter D 102c-2 Large diameter D 102c-1 Measurements were taken for the longitudinal axis A spanning the external flexible joint 147c. 102c The distance, the small diameter D 102c-2 The measurement is taken for the longitudinal axis A spanning 147d of the internal flexible joint. 102c The distance. In this example, the diameter D 102c-1 D 102c-2 The distance from the first end 106c to the second end 106d is essentially constant. However, in some instances, the foldable body 102c can be formed with a draft angle, thereby increasing the diameter D. 102c-1 D 102c-2 The size gradually increases or decreases along the direction from the first end 106c to the second end 106d to accommodate the removal of the foldable housing 102c from the mold cavity during manufacturing.

[0082] In use, the foldable body 102c is in the expanded state ( Figure 19A ) and folded or compressed state ( Figure 19B The foldable body 102c moves between chambers 114b to draw air into and exhaust it through one or more of valves 108a and 108b configured in a manner similar to those previously discussed. Thus, the foldable body 102c moves to an expanded state to draw air into chamber 114c via the intake or suction valve 108a, and moves to a compressed or folded state to exhaust air via the exhaust valve 108b. Valves 108a and 108b may be integrated into one or both ends 106c and 106d of the foldable body 102c.

[0083] Special reference Figures 22 to 24 Figure 25 A foldable body 102d is provided. Given the substantial structural and functional similarity of the components associated with the foldable body 102, the same reference numerals, including alphanumeric extensions, are used to identify those components that have been modified. To describe the geometry of the foldable body 102d, it may be referred to relative to the front side 26, rear side 28, left side 30, and right side 32. However, these names are merely for describing the relative geometry of the foldable body 102d and do not limit the use or orientation of the foldable body 102.

[0084] The foldable body 102d in this example is configured in a similar manner to the foldable body 102 previously described. However, in this example, the foldable body 102d includes a section along the longitudinal axis A. 102d Multiple segments 126d arranged in series. Similar to the previously described foldable body 102, each segment 126d of the foldable body 102d includes multiple joints (i.e., folding portions) for allowing each segment 126d to fold over itself and adjacent segments within the segment 126d. Figure 24 and Figure 25 As shown, each segment 126d and the foldable body 102d can be relative to the width W. 102d and thickness T 102d To describe, the width W 102d and thickness T 102d Each is a longitudinal axis A spanning the foldable body. 102d Measured. As discussed in more detail below, the width W of each segment is 126d. 102d Defined as spanning opposite paired side surfaces 154e to 154h, with a thickness T of 126d for each segment. 102d Defined as spanning a pair of opposite (i.e., front and back) interface surfaces 132c, 132d.

[0085] refer to Figure 23An external elevation view of the foldable body 102d shows the arrangement of segments 126d forming the foldable body 102d. As shown, the sides of each segment 126d include multiple side surfaces 154e to 154h joined together at multiple internal joints or folds 122d, 124d, which facilitate movement between an expanded state and a folded state. Specifically, adjacent surfaces 154e to 154h of each segment 126d are joined together along a horizontal joint 122d and a corresponding vertical joint 124d. Thus, surfaces 154e to 154h may include a pair of undersides 154e, 154f positioned on the bottom side of the horizontal joint 122d and joined together along the lower portion of the vertical joint 124d. Faces 154e to 154h may further include a pair of upper surfaces 154g, 154h, which are positioned on the top side of the horizontal connector 122d and joined together along the upper portion of the vertical connector 124d. Faces 154e to 154h may further include a pair of front sides 154e, 154g, which are positioned on the front side of the vertical connector 124d and joined together along the front portion of the horizontal connector 122d. Faces 154e to 154h may further include a pair of rear sides 154f, 154h, which are positioned on the rear side of the vertical connector 124d and joined together along the rear portion of the horizontal connector 122d.

[0086] Still referencing Figure 23 Each segment 126d of the foldable body 102d includes a lower front surface 132c and an opposing upper front surface 132d attached along the front hinge 130c. Conversely, each segment 126d of the foldable body 102d includes a lower rear surface 132e and an upper rear surface 132f attached to each other along the rear hinge 130d. Therefore, the front surfaces 132c, 132d of each segment 126d are disposed on opposite sides of the rear surfaces 123e, 132f, thereby defining the thickness T of the foldable body 102d by the distance from the front surfaces 132c, 132d to the rear surfaces 132e, 132f. 102d In the illustrated example, the lower surfaces 132c and 132e of segment 126d are parallel to each other, and the upper surfaces 132d and 132f of segment 126d are parallel to each other, thereby allowing the thickness T of the foldable body 102d to be reduced. 102d Along longitudinal axis A 102dThe orientation remains substantially constant. However, the lower surfaces 132c, 132e and the upper surfaces 132d, 132f are arranged in alternating orientations (i.e., the lower surfaces are at an angle relative to the front surface, and the upper surfaces are at an angle relative to the rear surface), such that the lower surfaces 132c, 132e and the upper surfaces 132d, 132f cooperate to define the longitudinal axis A along the foldable body 102d. 102d The alternating directions of the Z-shaped outline.

[0087] In use, the foldable body 102d moves between an expanded state and a folded or compressed state to draw air into and exhaust the chamber 114b via one or more of the valves 108a, 108b configured in a manner similar to the valves 108a, 108b discussed previously. In the folded state, the front and rear surfaces 132c to 132f fold onto each other along corresponding hinges 130c, 130d, while the side surfaces 154e to 154h fold inward onto each other along joints 122d, 124d. Thus, the foldable body 102d moves to the expanded state to draw air into the foldable body 102d via the suction or draw-in valve 108a, and moves to the compressed or folded state to exhaust air via the discharge valve 108b. The valves 108a, 108b may be integrated into one or both ends 106c, 106d of the foldable body 102d.

[0088] The following clauses provide exemplary configurations for adjustment systems used in the aforementioned footwear or clothing.

[0089] Clause 1. An adjustment system for footwear articles, the adjustment system comprising: a body attached to an outer surface of the footwear article and including a plurality of segments cooperating to define a cavity, the body being movable between an extended state and a folded state; and a bladder attached to the footwear article and defining an internal cavity in fluid communication with the cavity, the bladder being movable from a relaxed state to a contracted state when the body moves from the folded state to the extended state.

[0090] Clause 2. The adjustment system according to Clause 1, wherein when the body is in the folded state, the plurality of segments are nested within each other.

[0091] Clause 3. The adjustment system according to any one of the preceding clauses, wherein the plurality of segments provide an accordion shape for the body.

[0092] Clause 4. An adjustment system according to any one of the preceding clauses, wherein the body includes a plurality of fold lines separating adjacent segments, the plurality of fold lines causing the plurality of segments to fold over each other as the body moves from the extended state to the folded state.

[0093] Clause 5. The regulating system according to any one of the preceding clauses, wherein when the bladder moves from the relaxed state to the contracted state, a volume of fluid is removed from the internal cavity of the bladder.

[0094] Clause 6. The adjustment system according to Clause 5, wherein when the body moves from the folded state to the extended state, the volume of fluid moves from the internal cavity and into the chamber of the body.

[0095] Clause 7. An adjustment system according to any one of the preceding clauses, wherein the body is biased into the folded state.

[0096] Clause 8. The adjustment system according to Clause 7 further includes an elastic member surrounding at least a portion of the body and configured to bias the body into the folded state.

[0097] Clause 9. An adjustment system according to any one of the preceding clauses, wherein each of the plurality of segments comprises a series of substantially flat surfaces defining the shape of each segment, wherein the substantially flat surfaces are substantially parallel to each other when the body is in the folded state.

[0098] Clause 10. A footwear article incorporating an adjustment system according to any one of the preceding clauses.

[0099] Clause 11. A footwear article comprising: an upper; a body attached to the upper and including a plurality of substantially flat surfaces cooperating to define a cavity, the body being movable between an extended state and a folded state; and a pouch attached to the upper and defining an internal cavity in fluid communication with the cavity, the pouch being movable from a relaxed state to a contracted state when the body moves from the folded state to the extended state.

[0100] Clause 12. Footwear article according to Clause 11, wherein the plurality of substantially flat surfaces cooperate to provide a plurality of segments for the body, each segment comprising at least two substantially flat surfaces of the plurality of substantially flat surfaces.

[0101] Clause 13. Footwear articles according to Clause 12, wherein when the body is in the folded state, the plurality of segments are nested within each other.

[0102] Clause 14. Footwear article according to any one of the preceding clauses, wherein the plurality of substantially flat surfaces provide an accordion shape for the body.

[0103] Clause 15. Footwear article according to any one of the preceding clauses, wherein the body includes a plurality of fold lines separating adjacent substantially flat surfaces, the plurality of fold lines such that the plurality of substantially flat surfaces fold over each other as the body moves from the extended state to the folded state.

[0104] Clause 16. Footwear article according to any one of the preceding clauses, wherein when the bladder moves from the relaxed state to the contracted state, a volume of fluid is removed from the internal cavity of the bladder.

[0105] Clause 17. Footwear article according to Clause 16, wherein when the body moves from the folded state to the extended state, the volume of fluid moves from the internal cavity and into the chamber of the body.

[0106] Clause 18. Footwear article according to any one of the preceding clauses, wherein the body is biased into the folded state.

[0107] Clause 19. Footwear articles according to Clause 18 further include an elastic member surrounding at least a portion of the body and configured to bias the body into the folded state.

[0108] Clause 20. Footwear article according to any one of the preceding clauses, wherein the plurality of substantially flat surfaces are stacked on top of each other when the body moves from the extended state to the folded state.

[0109] The foregoing description has been provided for purposes of illustration and description. This foregoing description is not intended to be exhaustive or limiting of this disclosure. Elements or features of a particular configuration are generally not limited to that particular configuration, but are interchangeable where applicable and can be used in selected configurations, even if not specifically shown or described. The same applies to variations in many respects. Such changes should not be considered as departing from this disclosure, and all such modifications are intended to be included within the scope of this disclosure.

Claims

1. An adjustment system for footwear products, the adjustment system comprising: A body, the body being attached to the outer surface of the footwear article and including a plurality of segments cooperating to define a cavity, the body being movable between an extended state and a folded state; as well as A pouch, which is attached to the footwear and defines an internal cavity in fluid communication with the chamber, and which can move from a relaxed state to a contracted state when the body moves from the folded state to the extended state.

2. The adjustment system according to claim 1, wherein when the main body is in the folded state, the plurality of segments are nested within each other.

3. The adjustment system according to claim 1, wherein the plurality of segments provide an accordion shape for the body.

4. The adjustment system of claim 1, wherein the body includes a plurality of fold lines separating adjacent segments, the plurality of fold lines causing the plurality of segments to fold over each other as the body moves from the extended state to the folded state.

5. The regulating system of claim 1, wherein when the bladder moves from the relaxed state to the contracted state, a volume of fluid is removed from the internal cavity of the bladder.

6. The adjustment system according to claim 5, wherein when the body moves from the folded state to the extended state, the volume of fluid moves from the internal cavity and enters the chamber of the body.

7. The adjustment system of claim 1, wherein the main body is biased into the folded state.

8. The adjustment system of claim 7 further includes an elastic member surrounding at least a portion of the body and configured to bias the body into the folded state.

9. The adjustment system of claim 1, wherein each of the plurality of segments comprises a series of substantially flat surfaces defining the shape of each segment, the substantially flat surfaces being substantially parallel to each other when the body is in the folded state.

10. A footwear article incorporating the adjustment system according to claim 1.

11. A footwear product, comprising: vamp; The body is attached to the upper and includes a plurality of substantially flat surfaces that cooperate to define a cavity, the body being movable between an extended state and a folded state; as well as The bladder is attached to the upper and defines an internal cavity in fluid communication with the chamber. When the body moves from the folded state to the extended state, the bladder can move from a relaxed state to a contracted state.

12. The footwear article of claim 11, wherein the plurality of substantially flat surfaces cooperate to provide a plurality of segments for the body, each segment comprising at least two substantially flat surfaces of the plurality of substantially flat surfaces.

13. The footwear article of claim 12, wherein when the body is in the folded state, the plurality of segments are nested within each other.

14. The footwear article of claim 11, wherein the plurality of substantially flat surfaces provide an accordion shape to the body.

15. The footwear article of claim 11, wherein the body includes a plurality of fold lines separating adjacent substantially flat surfaces, the plurality of fold lines causing the plurality of substantially flat surfaces to fold over each other as the body moves from the extended state to the folded state.

16. The footwear article of claim 11, wherein when the bladder moves from the relaxed state to the contracted state, a volume of fluid is removed from the internal cavity of the bladder.

17. The footwear article of claim 16, wherein when the body moves from the folded state to the extended state, the volume of fluid moves from the internal cavity and enters the chamber of the body.

18. The footwear article of claim 11, wherein the body is biased into the folded state.

19. The footwear article of claim 18, further comprising an elastic member surrounding at least a portion of the body and configured to bias the body into the folded state.

20. The footwear article of claim 11, wherein when the body moves from the extended state to the folded state, the plurality of substantially flat surfaces are stacked on top of each other.

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