201201726 六、發明說明： 【發明所屬之技術領域】 本發月係為種鞋底結構，尤指一種具有雙密度特性之 EVA鞋底結構。 ’ 籲 【先前技術】 按，人體足部係包含二十六個不規則形狀的骨頭、三十 個滑液關節及—百條以上_帶所形成複雜而穩定、可曲的 、。構’腳u卩結構通常被分為三部份，包含了足後跟、足中段 及則掌’對足部岭，對其自然功能不會有任何限制及束缚 裒兄就讀環境，要保有最健康的足部，以赤腳 來活動是最舒適的，但現實it境中仍存在著許多會危害足部 修力穴銳物，因此，足部需穿著鞋子來避免造成這些傷害，然 將鞋子穿上的㈤時，不可避免的都會影響到足部的 活動。 承上所述’鞋子影響足部健康的S素包含了重量、吸震 透氣ϋ束'、專性等，為了使鞋子具有較佳的安全性及舒 適H，且細其結構完紐，—絲子的鞋底讀選用摩擦 系數幸乂问且軟硬度適中的單一材質來製作如廳職、、 EVA、PU或TPR等高分子塑性材料，並於鞋底底面設計些許顆 201201726 粒或紋路’ II此增雜底之安全性及舒雜；然，鞋子要令 人感到舒適’料時必須使足部能自然地活動，使用單 質之鞋底為了達到—定的稍性能，其硬度會令足部在屈曲 時較為費力’足部活動時_對要耗f較多的能量，長時間 下來可能引起局部的肌肉疲勞，較硬馳底亦容易使身體受 到來自足部較大的衝擊力；再者，當我們站立科候，S 底並不是-個完㈣平面，故身體之重4大娜於前掌及足 後跟上’而當我們行走或跑跳的喃，則f勤前掌與地面 接觸所產生之摩擦力來形成相對運動，如此一來習知單一 材質之鞋底經過長時間的f著後’其磨損部位大都是集中於 前掌及錢跟處’而其職損難的部㈣徒增鞋子整體的 重蛋：，在穿著時會增加足部的負擔。 【發明内容】 本發明之目的，係為了在不影響鞋底耐磨性的情況下，有 效地減輕鞋底的重量並增加其柔軟度，藉此提升鞋子穿著時之 舒適性。 為達到上述之目的，本發明提供了一種EVA雙密度鞋底 結構，其包括：由EVA發泡製成之一鞋底，外形係對應人體 足部之形狀，分為鞋掌、鞋中段及鞋後跟三處，該鞋底底面之 鞋掌處設有一前掌耐磨區，而該鞋底底面之鞋後跟處則設有一 足後跟耐磨區，該前掌耐磨區及該足後跟耐磨區係由EVA發 201201726 泡製成，藉由EVA之發泡密度控制，令該前掌耐磨區及該足 後跟耐磨區之硬度高於該鞋底之硬度，依照動態足壓之觀測， 該前掌耐磨區係設置於對應足部每一疏骨前端及腳拇指所涵 蓋之區域，而該足後跟耐磨區則設置於對應足部之跟骨處。 本發明係由EVA樹脂所發泡製成，藉由兩種不同的發泡 密度控制，形成一相同材質具有兩種不同軟硬度之鞋底，該前 • 軍耐磨區及s玄足後跟财磨區具有相對較高的硬度，故能保持原 有較佳的耐磨功效，而該鞋底本身具有相對較低之硬度，其具 有較佳的柔軟性，不但能增進鞋底的吸震能力，相對也減輕了 鞋子整體的重量，藉此可有效地提升鞋子之穿著舒適性；以下 謹以一具體實施例，且佐以圖式作詳細說明，俾使審查委員能 對於本發明之技術特徵，有更進一步之了解。 【實施方式】 • 請參閱圖式第一至五圖，人體之足部通常被分為前掌 ⑴ ' 足中段⑵及足後跟⑶三部份，前掌⑴由十九塊骨頭所 組成，包含了五塊跛骨（113，1113，11111(1，116)及十四塊趾骨 (12)(構成腳趾）’其中腳拇指(13)包含了兩塊趾骨(12)，足中段 (2)由五塊小跗骨(21)組成，該些跗骨(21)與韌帶緊密相連形成 足弓結構，而足後跟(3)包含了與地面接觸的跟骨(31)，以及位 於跟月（31)上方沿著脛骨(33)形成踝關節的躁骨(32)，觀察足底 之壓力分布；當裸足站立時，足後跟⑶、前掌⑴及足部側邊 201201726 會與地面接觸，主要支撐點係位於跟骨（31)及跛骨 (113，111?，11〇，114116)處，而大多數人位於前掌(1)的支撐點更是 落方；第二疏骨至第五疏骨(llc，lld，lle)之前端；圖式第三圖係 為足部步行時之壓力中心執跡示意圖，圖中以虛線表示步行過 程中的壓力中心軌跡，實線表示足底與地面主要接觸點之軌 跡，透過步態分析，當裸足步行時，步伐循環中都是以一隻腳 與地面接觸，壓力中心由足後跟(3)中心點迅速地橫越足中段(2) 而到達前掌(1)處，大多數人足底的最大壓力都是位於第二疏 月（11b)或第二疏骨(iic)之前端，在腳趾要離地時，疏骨(iia e) 與趾月（12)間的關節呈屈曲狀態，壓力中心會移至腳拇指⑼ 處’虽足部穿上鞋子後，會造成足底壓力分布上的變化，使足 後跟(3)之壓力較均勻分布’能有效地降低足後跟⑶的壓力， 其最大壓力值則轉換至第一疏骨(11狀第二雜骨⑴的之前 而而腳趾的壓力也會猶微增加。然，以足底壓力分析系統進 行人體步行時動態足底壓力分析的實驗，主要是應用腳壓板測 量系統，進行人體裸足步行軸態足底壓力分布及壓力中心點 軌亦的描述及刀析，得到的結果係如圖式第四圖所示，圖中由 左至右係為-個完整的步行循環’小方塊代表壓力巾心點，而 白色線條係為壓力巾心點之連續軌跡，在裸足步行的過程中， T與地面的主要接觸點位依序為跟骨(川、第五㈣⑴e)之 引端至第^(Ua)之前端、腳拇指(13);圖式第五圖係本發 月進仃足。卩穿著而跟女鞋步行時連續動態足壓分析的實驗所 201201726 得到之結果，參照圖式巾右方的色階龍壓力表，不同的 分別代表著不_壓力值，在步行循環的十個傾中，小方 標示出每彳mm最大動值的所在位置，其動數值位於每個 小圖的右上方，觀察圖式中之壓力分布即可得知，在足部穿著 高跟鞋的步行過針，第—财⑴狀前端錢腳拇指⑼係 承受較大的壓力。 μ201201726 VI. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a sole structure, and more particularly to an EVA sole structure having double density characteristics. 『Call 【Previously】 According to the press, the human foot system consists of twenty-six irregular shaped bones, thirty synovial joints, and more than one hundred bands, which are complex, stable, and flexible. The structure of the foot's foot is usually divided into three parts, including the heel, the middle part of the foot, and the palm of the foot. It does not have any restrictions on its natural function and is bound to the environment. A healthy foot is the most comfortable to move barefoot, but there are still many artifacts in the real world that can harm the foot's repairing points. Therefore, the feet need to wear shoes to avoid these injuries, then wear the shoes. In the case of (5), it is inevitable that it will affect the activity of the foot. Including the above-mentioned S shoes affecting the health of the foot, including the weight, shock absorption and breathable bundles, obligate, etc., in order to make the shoes have better safety and comfort H, and the structure is fine, the silk The sole reading uses a single material with a good friction coefficient and moderate hardness to make polymer plastic materials such as office, EVA, PU or TPR, and designs some 201201726 grain or texture on the bottom of the sole. The safety and comfort of the miscellaneous bottom; of course, the shoes should be comfortable. 'The material must be able to move naturally when the material is used. In order to achieve a certain slight performance, the hardness will make the foot flex during flexion. More laborious 'foot activity _ to consume more energy, long-term down may cause local muscle fatigue, harder to get the bottom is also easy to make the body from the impact of the foot from the larger; When standing, the bottom of S is not a complete (four) plane, so the weight of the body is 4 on the forefoot and the heel. When we walk or run, the front of the foot is in contact with the ground. Friction to form relative motion, such as As a result, the sole of a single material has been subjected to a long period of time. 'The wear parts are mostly concentrated on the forefoot and the money, and the part where the job is difficult. (4) Adding the whole weight of the shoes: When wearing Will increase the burden on the foot. SUMMARY OF THE INVENTION The object of the present invention is to effectively reduce the weight of a sole and increase its softness without affecting the wear resistance of the sole, thereby improving the comfort of wearing the shoe. In order to achieve the above object, the present invention provides an EVA double-density sole structure comprising: a sole made of EVA foam, the shape corresponding to the shape of the human foot, divided into a shoe sole, a mid-shoe and a heel In the three places, the sole of the sole has a forefoot wear-resistant area, and the heel of the sole of the sole is provided with a heel wear-resistant area, the forefoot wear-resistant area and the heel wear-resistant The fauna is made of EVA hair 201201726. The foam density control of EVA makes the hardness of the forefoot wear zone and the heel wear zone higher than the hardness of the sole. According to the observation of dynamic foot pressure, The forefoot wear zone is disposed in a region corresponding to each of the sparse front end of the foot and the thumb of the foot, and the heel wear zone is disposed at the calcaneus of the corresponding foot. The invention is made of EVA resin foamed, and is controlled by two different foaming densities to form a sole of the same material having two different softness, the front wearable area and the squat heel The grinding area has a relatively high hardness, so it can maintain the original better wear resistance, and the sole itself has a relatively low hardness, which has better softness, which not only enhances the shock absorption capacity of the sole, but also It also reduces the overall weight of the shoe, thereby effectively improving the wearing comfort of the shoe; the following is a detailed description of the embodiment and the drawings, so that the reviewing committee can have the technical features of the present invention. Learn more. [Embodiment] • Please refer to Figures 1 to 5 of the figure. The foot of the human body is usually divided into three parts: the forefoot (1) 'foot midsection (2) and the heel (3). The forefoot (1) consists of nineteen bones. Contains five tibia (113,1113,11111 (1,116) and fourteen phalanges (12) (constituting the toes)' where the thumb (13) contains two phalanges (12) and the middle of the foot (2) It consists of five small humerus (21) that are tightly connected to the ligament to form the arch structure, while the heel (3) contains the calcaneus (31) that is in contact with the ground, and is located in the month of the month. (31) The tibia (32) above the tibia (33) is formed to observe the pressure distribution of the sole; when the bare foot is standing, the heel (3), forefoot (1) and foot side 201201726 will be in contact with the ground. The main support points are located at the calcaneus (31) and the tibia (113, 111?, 11〇, 114116), while most people are located at the support point of the forefoot (1). The front end of the fifth sparse bone (llc, lld, lle); the third figure of the figure is the schematic diagram of the pressure center in the foot walking, and the dotted line indicates the pressure center trajectory during the walking process. The solid line indicates the trajectory of the main contact point between the sole and the ground. Through the gait analysis, when the bare foot walks, the foot cycle is in contact with the ground with one foot, and the pressure center is rapidly moved from the center point of the heel (3). Crossing the mid-segment (2) and reaching the forefoot (1), the maximum pressure on the soles of most people is at the front of the second sparse moon (11b) or the second sparse (iic), and the toes are to be off the ground. At the time, the joint between the iia e and the toe (12) is in a flexed state, and the pressure center is moved to the thumb (9). Although the foot is worn, the pressure distribution on the sole causes a change in the pressure distribution of the sole. The heel (3) pressure is more evenly distributed' can effectively reduce the pressure of the heel (3), and the maximum pressure value is converted to the first sparse bone (the elbow second bone (1) before the toe pressure It will increase slightly. However, the experiment of dynamic foot pressure analysis during human walking with the foot pressure analysis system is mainly based on the foot plate measurement system, the foot pressure distribution and the pressure center point of the human bare foot walking. Description and analysis, the results obtained are shown in the fourth figure, In the figure, from left to right is a complete walking cycle. The small square represents the pressure point of the pressure towel, while the white line is the continuous trajectory of the heart point of the pressure towel. During the walking of the bare foot, the main contact point between the T and the ground The order is the leading end of the calcaneus (Chuan, the fifth (four) (1) e) to the front end of the ^ (Ua), the thumb (13); the fifth figure of the figure is the moon into the foot. The results of the continuous dynamic foot pressure analysis experiment 201201726 during walking, refer to the gradation dragon pressure gauge on the right side of the pattern towel, the different values represent the _ pressure value, in the ten inclinations of the walking cycle, the small square mark The position of the maximum moving value of each 彳mm, the moving value is located at the upper right of each small image, and the pressure distribution in the drawing can be seen, the walking needle in the high heels in the foot, the first (1) The front end money foot thumb (9) is subjected to a large pressure. μ
咕參閲圖式第-至七圖’本發明人參照前述的實驗結果， 創造出如圖式第六圖及第七圖兩種不同式樣之鞋底底面，本發 明係以隱(乙烯醋酸乙婦峨脂為主要母料，添入架橋劑: 發泡劑及色料等各式加工助劑，置人模具内發泡製成一鞋底 (4) ’其外形雜應人體足部之形狀，分為鞋掌⑷）、鞋中段㈣ 及鞋後跟(43)三處’該鞋底(4)底面之鞋掌⑼處設有一前掌耐 磨區(411)，而雜底(4)底面之概跟(43)_設有—錢跟耐 磨區(43D ’藉由調整不同之發泡倍率來控制隱樹脂之發泡 密度’使該前掌耐磨區(411)及該足後跟耐磨區(431)之硬度高 於該鞋底(4)之硬度’依照前述動態足壓實驗結果之觀測，該 前掌耐磨區(431)係設置於對應足部每一疏和㈣前端及腳 拇心(13)所’函蓋之區域’該足後跟耐磨_3明設置於對應足 4之跟骨(31)處’待該鞋底(4)與該前掌耐磨區⑴、該足後跟 耐磨區(431)發泡交聯後’經脫模即得本發明eva雙密度鞋底 結構’而1_底(4)之底面、該前掌财磨區(411)及該足後跟耐 磨區(431)可設置排水㈣及祕表面，以提升防滑之功效。 201201726 當使用者穿著以本發明為鞋大底的鞋子，無論是靜止站立 或是步行前進’其足部的壓力大部份都會落_前掌耐磨區 (411)及該足後跟耐磨區(431)上，由於足部之步行運動係為一 種相當複_触’若賴者料硬雜高轉子進行劇烈的 步行或是跑步’腳踝過度_職生_向剪力錢轉力矩， 很容易造成腳踝杻傷或是足部、阿基里斯腱、膝蓋及骸部的傷 害，而本發明之鞋底(4)係具有較佳的柔軟性，能夠較有效地 吸收衝擊力以避免產生傷害，综上所述，本㈣具有以下之優 點： 卜EVA樹脂具有良好的柔軟性，質輕且彈性佳耐水解且化 學穩疋性良好’故由該EVA雙密度鞋底結構與鞋面所製成之鞋 子係具有難之穿著舒触，更可達_量化之效果，相較於 其他鞋底材質，本發明係具有相對之優勢。 2、由於該前掌耐磨區(411)及該足後跟耐磨區(431)之硬度高於 該鞋底(4)之硬度，故該前掌耐磨區(41及該足後跟耐磨區(叫 能保持原餘⑽耐磨功效’㈣鞋底(4)本身之硬度相對較 低’不但具有紹I：的吸震能力，相對也減輕了鞋子整體的重 量，藉此可有效地提升鞋子之穿著舒適性。 紅上所述，本發明以該鞋底（4)為主體架構，輔以該前掌 耐磨區(411)及該足後跟耐磨區(431)之設置，形成一具有雙密 度之EVA鞋底結構’相較於習知單材質單密度之鞋底結構，穿 著本發明所製成的鞋子係具有較佳之舒適性；上述實施例僅為 201201726 說明本發明之原理及其功效，並非關本發明，因此f於此技 術之人士對上述實施例進行修改及變化，仍不脫本發明之精 神’本發明已具備產業上利用性、新穎性及進步性，並符合發 明專利要件，爰依法提起申請。 【圖式簡單說明】 第一圖係為足部骨骼分布之俯視示意圖。 第二圖係為足部骨骼分布之側視示意圖。 第二圖係為足部步行時之壓力中心轨跡示意圖。 第四圖係為裸足步行時之壓力中心點軌跡及連續動態足壓分 布圖。 第五圖係為足部穿著高跟女鞋步行時之連續動態足壓分布圖。 第六圖係為本發明鞋底底面之示意圖。 第七圖係為本發明另-鞋底底©之示意圖。 【主要元件符號說明】 前掌(1) 疏骨（lla，lib, lie, lid, ue) 趾骨（12) 腳拇指（13) 足中段(2) 跗骨（21) 201201726 足後跟(3) 跟骨（31) 踩骨（32) 脛骨（33) 鞋底(4) 鞋掌(41) 前掌耐磨區(411) 鞋中段(42) 鞋後跟(43) 足後跟对磨區(431)咕 Referring to the drawings from the first to the seventh figure, the inventors have referenced the foregoing experimental results to create a sole bottom surface of two different patterns as shown in the sixth and seventh figures, and the present invention is a hidden (ethylene acetate) Rouge is the main masterbatch, adding bridging agent: various processing aids such as foaming agent and coloring material, and foaming into a sole to make a sole (4) 'The shape of the human body is the shape of the foot. For the shoe sole (4)), the middle section of the shoe (4) and the heel of the shoe (43), there is a forefoot wear zone (411) at the sole (9) of the sole of the sole (4), and the bottom of the bottom (4) With (43) _ set - money and wear zone (43D 'by controlling different foaming ratio to control the foaming density of the hidden resin' to make the forefoot wear zone (411) and the heel wear The hardness of the zone (431) is higher than the hardness of the sole (4). According to the observation of the dynamic foot pressure test results described above, the forefoot wear zone (431) is disposed at the front end and the foot of each foot corresponding to the foot. The area covered by the heart (13) is the wearer _3 clearly placed at the calcane (31) of the corresponding foot 4 'to the sole (4) and the forefoot wear zone (1), the foot Heel wear zone (431) After the foam cross-linking, the eva double-density sole structure of the present invention is obtained by demolding, and the bottom surface of the bottom (4), the front palm grinding area (411) and the wear-resistant area of the heel (431) can be set. Drainage (4) and secret surface to enhance the anti-slip effect. 201201726 When the user wears the shoes with the soles of the present invention, whether standing still or walking forward, most of the pressure on the foot will fall. In the grinding zone (411) and the wear-receiving zone (431) of the heel, the walking movement of the foot is a kind of quite complex _ touch 'If the material is hard, the high rotor is violent walking or running' _ 职 _ _ to the shear force to torque, it is easy to cause ankle injury or injury to the foot, Achilles, knee and ankle, and the sole (4) of the present invention has better flexibility, It can absorb impact force more effectively to avoid damage. In summary, this (4) has the following advantages: EVA resin has good softness, light weight, good elasticity, hydrolysis resistance and good chemical stability. The EVA double-density sole structure and the shoes made of the upper are difficult to wear. The invention is more advantageous than the other sole materials. 2. The hardness of the forefoot wear zone (411) and the heel wear zone (431) is higher than that of the other. The hardness of the sole (4), so the forefoot wear-resistant area (41 and the heel wear-resistant area (called to maintain the original (10) wear resistance' (four) sole (4) itself has a relatively low hardness' Shao I: The shock absorbing ability relatively reduces the overall weight of the shoe, thereby effectively improving the wearing comfort of the shoe. As described above, the present invention uses the sole (4) as the main structure, supplemented by the forefoot The wear-resistant area (411) and the heel wear-resistant area (431) are disposed to form a double-density EVA sole structure, which is made of the present invention compared to the conventional single-material single-density sole structure. The shoe has better comfort; the above embodiment is only 201201726 to explain the principle and function of the present invention, and is not related to the present invention. Therefore, those skilled in the art can modify and change the above embodiment without departing from the invention. Spirit's invention has industrial applicability, novelty and progress Sex, and in accordance with requirements of patent inventions, Yuan filed application in accordance with law. [Simple description of the figure] The first picture is a top view of the distribution of the bones of the foot. The second image is a side view of the distribution of the bones of the foot. The second figure is a schematic diagram of the pressure center trajectory when the foot is walking. The fourth figure is the pressure center point trajectory and continuous dynamic pressure distribution map of bare foot walking. The fifth picture shows the continuous dynamic foot pressure distribution of the high-heeled women's shoes while walking. The sixth figure is a schematic view of the bottom surface of the sole of the present invention. The seventh figure is a schematic view of the sole of the present invention. [Main component symbol description] Forefoot (1) Sparse bone (lla, lib, lie, lid, ue) Toe bone (12) Foot thumb (13) Midfoot (2) Tibia (21) 201201726 Foot heel (3) Calcaneal (31) Bones (32) Tibia (33) Sole (4) Shoe (41) Forefoot wear zone (411) Midsole (42) Heel (43) Heel to wear zone (431 )