坎、發明說明： 【發明所屬之技術領域】 本發明係關於一種迴力鏢，特別是指一種採用高緩衝性 之優異特性材質所做成的迴力鏢。 【先前技術】 「迴力鏢」（Boomerang)為飛出後會持續轉彎直至折回 飛行的-種玩具和運動。儘管目前市面上的迴力錦在外形的 设計上各有冑多特別與新賴的形&，但&本上迴力録迴旋臂 的外形剖面形狀近似飛機機翼剖面，使迴力錦與线作相對 運動時能產生-作用在迴力鏢旋臂上之浮力，於迴力鏢向前 ㈣和運動的同時’能依據白努利原理透過空氣運動產生浮 力’使之持續轉彎終至折回。 惟’迴力鏢在作持續轉響折目之迴旋飛行其安全性仍有 下列諸多缺失，乃亟思加以改良創新： π)由於迴力鏢大部分的材質是由木材或塑膠所製造， 採用木材或塑膠製造能使迴力録之迴旋臂具有^夠的厚度 和重量’使該迴旋臂能透過空氣運動產生浮力，但使用堅硬 材質製造之迴力鏢其安全性堪虞，使用的年齡需有一定限 制。 (2) S用發泡迴力鏢係如美國專利第5，棚，678號專利 案（下稱引證案）’其主要構成特徵為：—迴力鏢從中央部分 以輪射狀擴展伸出的 少 複數性録臂’該鏢臂的各自輻射狀軸夾 角係沿對稱的分佈在每一 母個“臂裡，如圖三、圖四所示；而 ' 、之主要缺點為：該引證案鑛f中心線垂直之斷面形 ，句/、鏢#中〜線對稱，此種斷面形狀之設計，於引證案 k力鏢向别％轉和運動的同時，其透過空氣運動產生的浮 力會使引d案之迴力録於㈣轉料攸昇高度較高，其持續 轉彎折回之迴旋飛回半徑較大。 b 了見上述習用物品仍有諸多缺失，實非一良善之 設計者，而亟待加以改良。 本案發明人鑑^上述習用迴力錦所衍生的各項缺點，乃 亟思加以改良創新’並經多年苦心孤詣潛心研究後，終於成 功研發完成本件迴力錦。 【發明目的】 本發明之目的即在於提供一種迴力鏢，係採用一低比重 以及高緩衝性之發泡塑膠作為迴力鏢之材質。 本發明之次一目的係在於提供一種迴力録，係在提供一 柔而不堅硬，藉由選用中心線夾角以製作出各式迴旋路徑高 低不同與迴旋半徑不同的迴力録。 【發明内容】 可達成上述新型目的之迴力鏢，包括有·· 一扁薄發泡本體，係包含有一中心部及三旋臂且重心轉 587951 轴和本體質心相互重合的扁薄發泡本體；職㈣具有一根 臂段及-翼臂段’該根臂段是由該中心部周圍呈放射狀且等 角度同體向外延伸，該翼臂段是由根臂段尾端呈一角度同體 向外延伸至翼梢，其翼臂段的主要幾何參數為一中心線夾角 以及-斜面’該斜面係位於迴力職料從翼f段前緣延伸 至翼梢刖緣’且翼臂段之延伸位置為從本體二分之一半徑處 :時延伸中心線夾角之角度’而該翼臂段之外形剖面分別為 前緣、翼平面及後緣所組成，是此藉由選用中心線夾角可製 作出各式飛行高度不同的迴力鏢，同時再透過斜面的設計又 可增加迫力鏢底部的洋力，以使該迴力録獲得較小的飛行迴 圈。 【實施方式】 口月參閱圖一、圖二，本發明所提供之迴力鏢，主要包括 有：-扁薄發泡本體卜係包含有一中心部u及三旋臂12 且重心轉軸和本體質心相互重合的扁薄發泡本體i;該扁薄 發泡本體1之旋臂12則具有一根臂段121及一翼臂段m， 該根臂段121是由該中心部u周圍呈放射狀且等角度同體 向外延伸，該翼臂段122是由根臂段121尾端呈一角度同體 向外延伸至翼梢123 ’其翼f段122的主要幾何參數為一中 心線夾角Θ1以—斜面14，該斜面14係位於迴力鏢底部係 從翼是段122前緣131延伸至翼梢123前緣131。 請參閱圖二（A)〜（C)，該翼臂段122之翼剖面分別為前緣 131、翼平面132及後緣133所組成，此外還有以下一些重 要的名詞：①翼弦寬（W) ··為翼臂段122之前緣131到後緣 133 ’其寬度約為70mm以下；②翼厚度（D):翼臂段122之厚 度，約為8mm〜20mm ;③翼梢123 :翼臂段122向外延伸之最 外點。 而迴力鏢共分為右手鏢及左手鏢兩種，不論那一種，握 持時略有弧度的一面一定是向内（朝使用者），而平面部分 向外，而本發明之迴力鏢先以右手鏢作為一說明，當迴力錦 出手求》丨那’扁薄發泡本體1的録面角度必須接近垂直線（該 鏢面角度會隨風速大小及迴力鏢種類的不同而有所差異）， 於丟擲後該根臂段121與翼臂段122之特殊翼剖面（剖面近 似飛機機翼形狀）與中心線夾角θ 1，會使氣流對根臂段121 與翼臂段122 —側形成推力，並於另一側則轉變成浮力，其 浮力之方向係由丟擲者觀看方向是由右至左。且由於根臂段 121與翼臂段122在重心上方速度較高（前飛加迴轉）產生的 浮力較大，在重心下方速度較低（前飛減迴轉）產生的浮力較 小，此浮力差異會形成力矩作用於扁薄發泡本體丨，促使扁 薄發泡本體1往左轉彎，然本發明之根臂段121與翼臂段 之中心線夾角0 1設計為12度至3。度，當中心線夾角Η 較小時，扁薄發泡本體U於爬昇，並以高角度飛回；當中 587951 心線夾角<9 1較大時，則扁薄發泡本體1之飛行路徑較低平， 是以低角度飛回。 於同時各根臂段121與翼臂段122也會因為在重心前方 與重心後方產生擾流，而導致浮力的差別；一般而言，重心 在前方時浮力較大，重心在後方時浮力較小，因前、後方的 差異所形成的力矩會促使扁薄發泡本體1逐漸往右翻平，而 本發明之迴力鏢其根臂段121與翼臂段1 22之中心線夾角 θ 1叹汁為12度至3 0度，此設計能獲得較低平的飛行路徑， 並以夾角0 1的大小獲得飛行路徑高低有別的各型產品。因 此’當扁薄發泡本體1於迴旋轉彎的同時也會因逐漸往右翻 平而爬昇，當爬昇至最高點後，該扁薄發泡本體1會以剩餘 的迴轉慣量飄回，因此，該扁薄發泡本體丨的飛行迴轉半徑 會與迴轉慣量成一正比，並與浮力成一反比。而本發明之斜 面14,該斜面14係位於迴力鏢底部係從翼臂段122前緣131 延伸至翼梢123前緣131，該斜面14的設計可幫助迴力録底 浮力的增加，進而改變迴旋飛回路徑與迴旋半徑的大小。 【特點及功效】 本發明所提供之迴力鏢，與前述引證案及其他習用技術 相互比較時，更具有下列之優點·· 1·由於本發明是以軟質發泡製成一扁薄發泡本體，以替 代一般木材或塑膠材質之迴力鏢，於製作時只要將原料加 9 587951 熱’使其像爆米花般的發泡填滿於塑模内，使其膨脹而熔合 成體之軟質迴力録，不僅重量輕，且擊中人體也Η造成 傷害。 2·本發明之根臂段與翼臂段之中心線夾角設計為12度 至30度’再搭配本發明低比重之軟性發泡材質，當中心線 夾角較小時’扁薄發泡本體易於爬昇，並以高角度飛回；當 中〜線夾角較大時’則扁薄發泡本體之飛行路徑較低平，是 以低角度飛回。 上列洋細5兒明係針對本發明之一可行實施例之具體說 明’惟該實施例並非用以限制本發明之專利範圍，凡未脫離 本發月技孩精神所為之等效實施或變更，均應包含於本案之 專利範圍中。 综上所述，本案不但在空間型態上確屬創新，並能較習 用物品增進上述多項功效，應已充分符合新穎性及進步性之 法定新型專利要件，爰依法提出中請，懇ff貴局核准本件 新型專利申請案，以勵發明，至感德便。 【圖式簡單說明】 請參閱以下有關本發明一較佳實施例之詳細說明及其附 圖’將可進一步瞭解本發明之技術内容及其目的功效；有關 該實施例之附圖為： 圖一為本發明迴力鏢之中心線夾角示意圖； 587951 圖二為該迴力鏢之頂面視圖； 圖二（A)為本發明迴力鏢之A-A斷面視圖； 圖二（B)為本發明迴力鏢之B-B斷面視圖； 圖二（C)為本發明迴力鏢之C-C斷面視圖； 圖三為習用迴力鏢之示意圖； 圖四為習用迴力鏢其鏢臂中心線與斷面位置示意圖； 圖四（A)為習用迴力鏢之A-A斷面視圖； 圖四（B)為習用迴力鏢之B-B斷面視圖； ® 圖四（C)為習用迴力鏢之C-C斷面視圖；以及 圖四（D)為習用迴力鏢之D-D斷面視圖。 【主要部分代表符號】 1扁薄發泡本體 11中心部 12旋臂 121根臂段 122翼臂段 123翼梢 0 1中心線夾角 W翼弦寬 Η翼厚度 131前緣 11 587951 132翼平面 133後緣 14斜面Description of the invention: [Technical field to which the invention belongs] The present invention relates to a rebound dart, in particular, a rebound dart made of a material with excellent characteristics of high cushioning. [Previous technology] "Boomerang" is a kind of toy and sport that will continue to turn until it turns back after flying out. Although there are many unique designs in the shape of the back of the market on the market today, the shape of the profile of the swing arm of the previous version of the swing arm is similar to the profile of the aircraft wing, so that During relative movement, the buoyancy acting on the boom of the boomerang can be generated. When the boomerang moves forward and moves at the same time, it can 'generate buoyancy through air movement according to the Bernoulli principle' to make it continue to turn to return. However, the safety of the boomerang during the continuous flight of the boomerang still has the following shortcomings, and it is urgent to improve and innovate: π) Because most of the materials of the boomerang are made of wood or plastic, using wood or plastic Plastic manufacturing can make the swing arm of the swing force have sufficient thickness and weight, so that the swing arm can move through the air to generate buoyancy, but the use of hard materials made of boom darts is very safe, and the age of use needs to be limited. (2) Foaming darts for S, such as U.S. Patent No. 5, Shed, No. 678 (hereinafter referred to as the "Citation Case"), are mainly composed of the following features:-The darts are extended from the central part in a round-shaped manner. The plural recording arms' the respective radial axis angles of the dart arm are symmetrically distributed in each female "arm, as shown in Figs. 3 and 4; and the main disadvantage of the" "is: The cross-sectional shape of the vertical center line, the sentence /, dart # in the line is symmetrical. The design of this cross-sectional shape, when the k-dart turns and moves in the cited case, the buoyancy generated by the movement of air will make The reversion of the case cited in d is recorded in the high turning material, and the turning radius of its continuous turning and turning is large. B Seeing that there are still many shortcomings in the above-mentioned conventional articles, it is not a good designer and needs to be urgently addressed. Improvement. The inventors of this case have learned from the above-mentioned various shortcomings derived from the conventional pujinjin. They are eager to improve and innovate. After years of painstaking research, they have finally successfully developed this pujinjin. [Objective of the Invention] The purpose of the present invention is to Is to provide a return force The dart uses a foam material with low specific gravity and high cushioning as the material of the rebound dart. A second object of the present invention is to provide a pull back record, which is to provide a soft but not hard, by selecting the angle of the centerline to Various kinds of turning force records with different turning paths and different turning radius are made. [Summary of the Invention] A bouncing dart that can achieve the above-mentioned new purpose includes a flat thin foam body, which includes a central part and three spiral arms and The center of gravity turns 587951 The flat and thin foam body whose axis and the center of mass of the body coincide with each other; the post has an arm segment and a wing arm segment. The root arm segment is radially outward from the center and is uniformly angled outward. Extension, the wing arm section is extended from the root end to the wing tip at an angle, and the main geometric parameters of the wing arm section are an angle of the centerline and the -slope. The leading edge of the f segment of the wing extends to the wing tip margin and the extension position of the wing arm segment is from the half of the body's radius: the angle of the center line's extension angle, and the outer section of the wing arm segment is the leading edge, Wing plane and rear The composition is that by using the included angle of the centerline, various types of return darts with different flying heights can be made. At the same time, the force of the bottom of the force dart can be increased through the design of the inclined plane, so that the return record can obtain a smaller flight return. [Embodiment] Refer to Figures 1 and 2 for the month and month. The darts provided by the present invention mainly include:-a thin and thin foam body including a central part u and a three-rotation arm 12; A flat thin foam body i whose body centers coincide with each other; the spiral arm 12 of the flat thin foam body 1 has an arm section 121 and a wing arm section m, and the root arm section 121 is radiated from the center portion u The wing arm segment 122 extends outward from the root end 121 at an angle and extends outward to the wing tip 123. The main geometric parameter of the wing f segment 122 is an angle of the centerline. Θ1 is a bevel 14 that is located at the bottom of the boomerang and extends from the leading edge 131 of the wing segment 122 to the leading edge 131 of the wing tip 123. Please refer to Figures 2 (A) ~ (C). The wing section of the wing arm section 122 is composed of the leading edge 131, the wing plane 132, and the trailing edge 133. In addition, there are some important terms: ① chord width ( W) ·· is the leading edge 131 to the trailing edge 133 of the wing arm segment 122, whose width is about 70 mm or less; ② wing thickness (D): the thickness of the wing arm segment 122, about 8 mm to 20 mm; ③ wing tip 123: wing The outermost point of the arm segment 122 extending outward. There are two types of right back darts and left hand darts. Regardless of which, the slightly curved side must be inward (toward the user) and the flat part outwards. The right-handed dart is used as an illustration. When the pull-back jin comes out, the recording surface angle of the flat foam body 1 must be close to the vertical line (the angle of the dart surface will vary with the wind speed and the type of the return dart). After throwing, the special wing section of the root arm section 121 and the wing arm section 122 (the section approximates the shape of an aircraft wing) and the center line angle θ 1 will cause the air flow to generate thrust on the side of the root arm section 121 and the wing arm section 122 , And on the other side, it turns into buoyancy, and the direction of buoyancy is from right to left when viewed by the thrower. And because the root arm segment 121 and the wing arm segment 122 have a higher buoyancy above the center of gravity (forward fly and slewing), a lower buoyancy below the center of gravity (low forward slewing) produces less buoyancy. This difference in buoyancy A moment will be formed on the flat thin foam body 丨, which will cause the flat thin foam body 1 to turn to the left. However, the angle 0 1 between the center line of the root arm section 121 and the wing arm section of the present invention is designed to be 12 degrees to 3. Degree, when the center line included angle 线 is small, the flat thin foam body U climbs up and flies back at a high angle; of which 587951 the heart line included angle < 9 1 is large, the flat thin foam body 1 flight path Lower level, fly back at a low angle. At the same time, each arm segment 121 and wing arm segment 122 will also cause buoyancy differences due to turbulence in front of the center of gravity and behind the center of gravity; generally speaking, the buoyancy is greater when the center of gravity is forward, and less when the center of gravity is rear. The moment formed by the difference between the front and the back will cause the flat and thin foam body 1 to gradually flatten to the right, and the angle between the center line θ 1 of the root arm section 121 and the wing arm section 1 22 of the boom dart of the present invention is sigh. From 12 degrees to 30 degrees, this design can obtain a low-level flight path, and obtain various types of products with different heights of the flight path at an angle of 0 1. Therefore, 'when the flat thin foam body 1 is turned to the right, it also climbs because it gradually turns to the right. After climbing to the highest point, the flat thin foam body 1 will float back with the remaining inertia of inertia. Therefore, The flying slewing radius of the flat and thin foam body 丨 will be proportional to the gyration inertia and inversely proportional to the buoyancy. The inclined surface 14 of the present invention is located at the bottom of the boomerang and extends from the leading edge 131 of the wing arm segment 122 to the leading edge 131 of the wing tip 123. The design of the inclined surface 14 can help increase the bottom buoyancy of the return force, thereby changing the rotation The size of the flyback path and the radius of the roundabout. [Features and effects] When compared with the aforementioned citations and other conventional technologies, the darts provided by the present invention have the following advantages ... 1. Because the present invention is made of a flat foam body made of soft foam In order to replace ordinary wood or plastic materials, just add 9 587 951 heat to the raw material to make it popcorn-like foam filled in the mold, make it expand and melt the soft back of the composite. Not only light weight, but also hit the human body and cause injury. 2. The angle between the center line of the root arm section and the wing arm section of the present invention is designed to be 12 degrees to 30 degrees. 'With the low specific gravity soft foam material of the present invention, when the center line included angle is small, the flat and thin foam body is easy. Climb and fly back at a high angle; when the angle between the lines is large, the flight path of the flat foam body is relatively low and flat, and fly back at a low angle. The above-mentioned foreign detail 5 is a specific description of a feasible embodiment of the present invention, but this embodiment is not intended to limit the scope of the patent of the present invention, and any equivalent implementation or change that does not depart from the spirit of this month ’s technical child Shall be included in the patent scope of this case. In summary, this case is not only innovative in terms of space type, but also can enhance the above-mentioned multiple effects over conventional items. It should have fully complied with the novel and progressive statutory new patent requirements. It is submitted in accordance with the law. The Office approves this new patent application to encourage inventions, and it is a matter of virtue. [Brief description of the drawings] Please refer to the following detailed description of a preferred embodiment of the present invention and the accompanying drawings' to further understand the technical content of the present invention and its purpose and effect; the drawings related to this embodiment are: Figure 1 It is a schematic diagram of the center line angle of the boomerang according to the present invention; 587951 Figure 2 is a top view of the boomerang; FIG. 2 (A) is a cross-sectional view of the boomerang according to the present invention; FIG. 2 (B) is a boomerang of the present invention BB sectional view; Figure 2 (C) is a CC sectional view of a boomerang according to the present invention; Figure 3 is a schematic diagram of a conventional boomerang; Figure 4 is a schematic diagram of a centerline and a section position of a dart arm of the conventional boomerang; A) is a cross-sectional view of AA of conventional boomerang; Figure 4 (B) is a cross-sectional view of BB of conventional boomerang; ® Figure 4 (C) is a cross-sectional view of CC of conventional boomerang; and Figure 4 (D) is DD cross-section view of a conventional boomerang. [Representative symbols of main parts] 1 Flat and thin foam body 11 Central part 12 Swing arms 121 Arm segments 122 Wing arm segments 123 Wing tips 0 1 Centerline angle W Wing chord width Wing thickness 131 Leading edge 11 587951 132 Wing plane 133 Trailing edge 14 bevel
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