M355505 八、新型說明： 【新型所屬之技術領域】 本新型係關於一種攜帶式電子裝置，特別是關於一種 具無按鍵式鍵盤之攜帶式電子裝置。 【先前技術】 傳統用於行動上網及對外通訊之攜帶式電子裝置（例 _ 如電子書、行動電腦、個人數位助理或行動電話等等）皆 具有簡易文書處理及網路工具編輯之功能，可供使用者於 旅行或洽公的途中進行文書處理或網路工具編輯，以處理 個人或公司上之事務。 然而，為了滿足使用者方便攜帶的需求，上述之攜帶 式電子裝置均被要求設計成輕薄短小，如此之設計導向反 而使攜帶式電子裝置缺乏合適的空間來放置合適大小的鍵 盤如此—來，使用者只能使用小尺寸按鍵之鍵盤，而無 % 法順暢且快速地操作鍵盤。 有鑑於此，業者便推出一種組合式鍵盤配件之產品， 此種組合式鍵盤配件可供使用者隨著攜帶式電子裝置一同 ’ 搭配使用。然而，由於攜帶式電子裝置具有過大或過多的 -件或、、、D構而降低攜帶便利性時，使用者之使用動機會因 此又到負面之景> 響，進而降低使用者之購買慾望。 為此，若能提供一種設計，不僅可提供合適尺寸按鍵 之鍵盤’又可提高攜帶便利性’讓業者於競爭中脫穎而出， 即成為亟待解決之一重要課題。 M355505 【新型内容】 因此，本新型之目的為提供一種攜帶式電子裝置，達 到既可提供分離式之合適尺寸鍵盤，又可提高鍵盤之攜帶 便利性，確保鍵盤不致於單獨使用攜帶式電子裝置時「遭 到遺忘或遣失。同時，本新型攜帶式電子裝置相較於先前 技術之功效下，原鍵盤所節省之配置空間又可增加攜 電子裝置之利用率，進而避免為提升產品規格，而加大芦 帶式電子裝置之體積。 m 為達成上述之目的，本新型係提出一種攜帶式電子 置’攜帶式電子裝詈句括―士撒 、 置包#纟機、—保護蓋及-無按鍵式 。其2主機之—面具有—顯示螢幕^按鍵式鍵盤夹 於保護盍之第-容置空間中。保護蓋與主機為可分開地 目互樞接’使得保護蓋可翻轉而蓋合於主機之顯示螢幕 蓋以保護主機及顯示螢幕’或可翻轉而露出主機之顯示 ^幕’同時露出之保護蓋部份可供觸壓無按 使用無按鍵式鍵盤。 规篮以 :據以上之描述，本新型將揭露數個實施例以進一步補 充本案之技術特徵。 柱狀之n施例中，主機之—側邊具有一呈圓 樞轉件，第-樞轉件開設有1放式之開槽 :蔓盍之一側邊具有一呈圓柱狀之第二樞轉件，當保镬 盍與主機結合時，第二栖 活動❹秘 干评入開槽中，並可於開槽中 以翻轉蓋合顯示勞幕或露出保護蓋可供觸壓 M355505 無按鍵式鍵盤之部份。其中第—樞轉件 第一電性連接部，第二樞轉件上對應第；=二有一組 =槽〜轉時，第連 接部相互電性連接。 丹弟電性連 3蓋上具有多個可代表鍵盤上所有按鍵字元之圖 v八中本新型之—第二實施例中，保護蓋可—M355505 VIII. New description: [New technical field] The present invention relates to a portable electronic device, and more particularly to a portable electronic device having a push-button type keyboard. [Prior Art] Portable electronic devices (such as e-books, mobile computers, personal digital assistants, mobile phones, etc.) that are traditionally used for mobile Internet and external communication have the functions of simple word processing and network tool editing. For the user to process paperwork or network tools on the way to travel or negotiate to handle personal or company affairs. However, in order to meet the needs of users for convenient carrying, the above-mentioned portable electronic devices are required to be designed to be light and thin, so that the design orientation causes the portable electronic device to lack a suitable space for placing a keyboard of a suitable size. You can only use the keyboard of a small-sized button, and the % method can operate the keyboard smoothly and quickly. In view of this, the industry has introduced a combination of keyboard accessories that can be used by users along with portable electronic devices. However, since the portable electronic device has an excessively large or too large number of pieces, or the D structure, the convenience of use is reduced, and the user's use of the action is negative to the user, thereby reducing the user's desire to purchase. . For this reason, if a design can be provided, not only can a keyboard of a suitable size button be provided, but also the convenience of carrying can be improved, which makes the industry stand out from the competition, which is an important issue to be solved urgently. M355505 [New Content] Therefore, the purpose of the present invention is to provide a portable electronic device, which can provide a separate suitable size keyboard, and can improve the portability of the keyboard, and ensure that the keyboard is not used when the portable electronic device is used alone. "Forgotten or lost. At the same time, compared with the prior art, the new portable electronic device can save the utilization space of the electronic device by saving the configuration space of the original keyboard, thereby avoiding upgrading the product specifications. To increase the volume of the reed-type electronic device. m In order to achieve the above purpose, the present invention proposes a portable electronic device 'portable electronic device 詈 ― 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士 士The two mainframes have a - display screen ^ button type keyboard clamped in the first accommodating space of the protective cymbal. The protective cover and the main body are detachably connected to each other 'so that the protective cover can be flipped over and closed to the host The display screen cover protects the main unit and the display screen or can be turned over to expose the display screen of the main unit, and the protective cover portion is exposed to be pressed without pressing According to the above description, the present invention will disclose several embodiments to further supplement the technical features of the present case. In the column n embodiment, the side of the main body has a circular pivot. The first pivoting member is provided with a slotted slot: one side of the vine has a cylindrical second pivoting member, and when the guard is combined with the host, the second habitat is secret. It is rated in the slot, and can be flipped to cover the display screen or expose the protective cover to touch the part of the M355505 buttonless keyboard. The first electrical connection part of the first pivoting part The two pivoting members correspond to the first; = two have a group = slot ~ turn, the first connecting portions are electrically connected to each other. The Dandi electrical connecting 3 has a plurality of figures representing all the key characters on the keyboard. In the second embodiment of the present invention, the protective cover can be-
刷物之片m所有按鍵字元之圖形係由印：之方；： 作於片體表面上，此月體p刷之方式製 體了&於無按鍵式鍵盤可供觸壓之 Η艘· 3此片體可设於保護蓋之一第二容置空間中，此 扁對應無按鍵式鍵盤可供觸壓之表面，且保護蓋至小 對應於印刷物之位置具透光性。 ° ^ 本新型之-第三實施例中，保護蓋設有多個透光孔， 此些透光孔分別排列成多個可代表鍵盤上所有按鍵字元之 圖形。The image of all the key characters of the brush is printed by: on the surface of the film, the body of the body is brushed by the body of the body, and the keyboard is available for pressing. · 3 The sheet body can be disposed in a second accommodating space of the protective cover, the flat corresponding to the surface of the non-button type keyboard for pressing, and the protective cover to be light-transmissive corresponding to the position of the printed matter. In the third embodiment, the protective cover is provided with a plurality of light-transmissive holes, and the light-transmissive holes are respectively arranged in a plurality of patterns representing all the key characters on the keyboard.
【實施方式】 以下將以圖式及詳細說明清楚說明本新型之精神，凡 熟悉此技術之人員在瞭解本新型之較佳實施例後，當可由 本新型所教示之技術，加以改變及修飾，其並不脫離本新 型之精神與範圍。 請參見第1圖所示’係為本新型攜帶式電子裝置的結 構示意圖。此攜帶式電子裝置1包括一主機10、一保護蓋 20及一無按鍵式鍵盤30。主機1〇並不限定任何的種類， M355505 可為電子書、行動電腦、個人數位助理、行動電話或遊戟 機而需鍵盤之機體者，此主機10至少具有一顯示螢幕u， 顯示螢幕11位於主機10之一側面上。保護蓋2〇為一般用 以保護主機10之皮件或塑件，與主機10相互樞接，較佳 為可分開地與主機10相互樞接，無按鍵式鍵盤30可失藏 於保護蓋20之第一容置空間21中’並於保護蓋2〇與主機 1〇相樞接時，透過保護蓋20與主機10電性相接。如此， 當使用者翻轉保護蓋2〇而蓋合於主機10上時，主機1()及 ”、、貝示螢幕11可得到保護，以便使用者收納攜帶式電子裝置 卜或當使:者翻轉保護蓋2G而露出主機1〇之顯示螢幕u 時’保遵盍20亦露出無按鍵式鍵盤％可供觸壓之部份， 可供使用者操作主機1G、顯示螢幕U及無按鍵式鍵盤30。 式電Ϊ = 1圖及第2圖所示1 2圖為本新型攜帶 ^ —第—實施例的結構分解圖。本新型之一 一實施例中，主機1〇 _ . 側邊具有一第一樞轉件12,此第 -柩轉件12之外形呈圓柱狀，且 槽121。而徂謹金“ 開敌式之開 盍20之一側邊亦具有一第二樞 二樞轉件22之外渺3圓& & W午22第 開样可供伸入開槽121中，並於 " /動地樞轉，如此，保護蓋2 轉件12與第二拖轉 u ^猎由弟一樞 之目的。 之、…而達到於主機10上樞轉 h 型f不限制第一樞轉件12與第二拖轉件22 Μ "31 ’ “任何第—婦件12 〉 使保護蓋20於主# 弟一樞轉件22可 機1〇上榷轉之實現方式均可落於本新型 M355505 之範圍中。 電性^之^ 20與主機 接之實現方式，第一樞轉件12於開槽⑵中一 ，-且弟—電性連接部122,第一電性連接 = 屬接點U4。第二樞轉件22 ° ^、有夕個金 .φ a ^ 上對應第—電性連接部122之 位置具有一組第二電性連接 具有多個金屬接點223。 電性連接部221 動地柩:件a伸入開槽121中’並於開槽121中活 轉時，第二電性連接部221之各金屬接點切分別 :一地與第-電性連接部122之各金屬接點124相互電性 ^ ^而，無按鍵式鍵盤3G與主機1Q之間也可以經由 =傳輪或其他無線方式達成電性相接而無須使用第一電 連接部122與第二電性連接部221。 =外’請參見第3圖所示’第3圖為本新型攜帶式電 鍵切:保護蓋於一第二實施例的一種剖面圖。其中無按 鍵式鍵盤30例如為電阻式觸碰鍵盤或電容式觸碰鍵盤，係 =一薄膜3卜-玻璃基體32及一背光模組％所組成，背 光模組33位於薄膜31與玻璃基體^之正下方，薄膜η 與玻璃基體32相對應之周緣位置上可分隔出-適當之隔 :*背光模組33對薄膜31與玻璃基體32發出光線時， ^透過手指、筆或其他介質對無按鍵式鍵盤30施加壓力 可產生彳§敍無按鍵式鍵盤％所連接之主機以計 异出被壓按之位置所代表之按鍵定義。然而，電阻式觸碰 鍵盤或電容式觸碰鍵盤均為習知之技術，其詳細之原理並 M355505 非本新型之重點特徵，故，此說明書在此便不加以贅述。 田使用者翻轉保濩蓋2G而露出保護蓋2G可供觸壓無 按鍵式鍵盤3G之部份時，為了讓使用者可於保護蓋20上 辨識相關鍵盤上所有之按鍵字元，保護蓋20上必須具有可 代表鍵盤上所有按鍵字元之圖形。 因此，請參見第3圖及第4圖所示，第3圖及第4圖為本 新型攜帶式電子裝置之保護蓋於第二實施例的兩種剖面圖。 • 本新型之一第二實施例中，保護蓋20可供設置一具有按鍵 字元之片體40’此些按鍵字元係由油墨印刷之方式所製作 於片體40表面上之印刷物。其中此片體4〇可直接設^無 按鍵式鍵盤30可供觸壓之表面上並置於第一容置空間h 中（見第3圖），或者此片體4〇可設於保護蓋2〇之一第 一谷置空間23中（見第4圖），第二容置空間23可為保 護蓋20上之一開放式夾層，以供隨時更換不同按鍵字元格 式之片體40。惟，無論此片體4〇位於第—容置空間21或 | 第二容置空間23,此片體40需對應無按鍵式鍵盤3〇可供 觸壓之表面。而且，保護蓋20對應於此片體4〇必須具透 . 光性，或至少對應此片體40之按鍵字元之位置必須具透光 • 性。如此’當無按鍵式鍵盤30啟動背光模組33，使得背 光模組33自無按鍵式鍵盤30中朝保護蓋20發出光線時， 使用者便可於保護蓋20上辨識出對應按鍵字元，並於無按 鍵式鍵盤30上觸壓出對應之按鍵字元。 另外，請參見第5圖所示，第5圖為本新型攜帶式電 子裝置之保護蓋於一第三實施例的剖面圖。除了提供具有 M355505 所有按鍵字s之片體4()外，本新型之—第三實施例亦可讓 使用者於保護蓋2G上辨識出相關鍵盤上所有之按鍵字 J。保護蓋2〇於第三實施例中可依據相關鍵盤上所有按鍵 字7L之形狀及排列位置，分別排列有多個透光孔Μ，如 此，當無按鍵式鍵盤30啟動背光模組33’使得背光模組 33自無按鍵式鍵盤3〇中朝保護蓋2〇發出光線時，使用者 便可於保護蓋20上辨識出對應按鍵字元，並於無按鍵式鍵 # 盤30上觸壓出對應之按鍵字元。 最後，請參見第6圖所示，第6圖為本新型攜帶式電 子装置的操作示意圖。當使用者翻轉保護蓋20而露出顯示 f幕11及保護蓋20可供觸塵無按鍵式鍵盤3〇之部份時，為 提供使用者於主機1G傾斜而可調整觀看操作顯示螢幕1!之視 角’主機ίο之任何位置均可設立一支撐件13，使得支撑件η 可支掉主機1〇位於一支樓面上，並使主機1〇與保護蓋20可 供觸壓無按鍵式鍵盤3()之—面保持—純角Θ，以防止主機1〇 • ®重广不穩而朝後傾倒’導致主機10外觀與内部元件的損 壞。該支擇架I3可以樞接方式設置於主機10，並可透過該支 撑架13調整該鈍角θ。 綜上所述，本新型攜帶式電子裝置工具有下列優點： ⑷藉由提供—可分離式之合適尺寸鍵盤，以提高鍵盤 之可操作便利性及攜帶便利性。 (b)藉由將無按鍵式鍵盤3〇與保護蓋2〇予以整合，確 2使用攜帶式電子裝置i與保護蓋2〇接合時，不致遺忘或 退失無按鍵式鍵盤30 ,以提高攜帶便利性。 11 M355505 (C)無按鍵式鍵盤30不具按壓式按鍵，以縮小保護4 20之厚度，進而縮小攜帶式電子裝置〗之體積。 盍 雖然本新型已以較佳實施例揭露如上，然其並非用以限〜 本新型’任何熟習此技㈣，在不麟本新叙精神和範圍定 内，當可作各種之更動與潤飾，因此本新型之保護範圍 附之申請專利範圍所界定者為準。 ^ 圖式簡單說明】 為讓本新型之上述和其他目的 s 、他目的特徵、優點與實施例 此更明顯易懂，所附圖式之詳細說明如下·· 第1圖為本新型攜帶式電子裝置的結構示意圖。 第2圖為本新型攜帶式電子 構分解圖。 '好裝置於-弟—實施例的結 第3圖為本新賴帶式電子裝置之保護蓋於—第二實 施例的一種剖面圖。 =4圖為本新型攜帶式電子裝置之 例的另種剖面圖。 、币只 置之保護蓋於一第三實 第5圖為本新型攜帶式電子裝 施例的剖面圖。 第6圖為本新型攜帶式電子裝置的操作示意圖 22 .第二枢轉件 主要元件符號說明】 1 ·攜帶式電子裝置 12 M355505 ίο:主機 11 ··顯示螢幕 12 :第一樞轉件 121 ··開槽 122 :第一電性連接部 124、223 :金屬接點 13 :支撐件 20 :保護蓋 21 :第一容置空間 221 :第二電性連接部 23 :第二容置空間 24 :透光孔 30 :無按鍵式鍵盤 3 1 :薄膜 32 :玻璃基體 33 :背光模組 40 :片體 0 :鈍角BRIEF DESCRIPTION OF THE DRAWINGS The spirit of the present invention will be apparent from the following description of the preferred embodiments of the present invention, which can be modified and modified by the teachings of the present invention. It does not depart from the spirit and scope of the present invention. Please refer to FIG. 1 for a schematic diagram of the structure of the novel portable electronic device. The portable electronic device 1 includes a main body 10, a protective cover 20 and a buttonless keyboard 30. The host 1〇 is not limited to any type. The M355505 can be an electronic book, a mobile computer, a personal digital assistant, a mobile phone or a cruiser. The host 10 has at least one display screen u, and the display screen 11 is located. One side of the host 10 is on the side. The protective cover 2 is generally used for protecting the leather or plastic parts of the main body 10, and is pivotally connected to the main body 10, preferably detachably connected to the main body 10, and the non-keyboard 30 can be lost in the protective cover 20. The first receiving space 21 is electrically connected to the main body 10 through the protective cover 20 when the protective cover 2 is pivotally connected to the main body 1 . Thus, when the user flips the protective cover 2 to cover the main body 10, the main body 1() and the display screen 11 can be protected so that the user can store the portable electronic device or when the user flips When the cover 2G is protected to expose the display screen of the host 1 ', the Guard 20 also reveals that the non-keyboard keyboard can be touched, and the user can operate the host 1G, the display screen U and the buttonless keyboard 30. The electric Ϊ = 1 and the 2 2 are the structural exploded view of the present invention. In one embodiment of the present invention, the host has a 〇 _ . a pivoting member 12, the first-shaped rotating member 12 is formed in a cylindrical shape and has a groove 121. The side of one of the open-ended openings 20 also has a second pivoting member 22 Outside the 渺 3 circle && W mid 22 opening sample can be extended into the slot 121, and pivoted in " /, so, the cover 2 12 and the second drag u ^ hunting By the purpose of the brother. And the pivoting h-type f on the main body 10 does not limit the first pivoting member 12 and the second towing member 22 Μ "31 '"any first-female member 12> to make the protective cover 20 to the main body The realization that a pivoting member 22 can be turned on and off can fall within the scope of the novel M355505. The electrical connection is realized by the main body, and the first pivoting member 12 is in the slot (2). 1. The first electrical connection = the contact point U4. The second pivoting member 22 ° ^, the evening gold. φ a ^ corresponds to the first electrical connection portion 122 The position has a second electrical connection with a plurality of metal contacts 223. The electrical connection portion 221 is movably: when the member a protrudes into the slot 121 and is alive in the slot 121, the second electrical connection The metal contacts of the portion 221 are respectively cut: the metal contacts 124 of the ground and the first electrical connection portion 122 are electrically connected to each other, and the buttonless keyboard 3G and the host 1Q can also pass through the = transfer wheel or Other wireless methods achieve electrical connection without using the first electrical connection portion 122 and the second electrical connection portion 221. =External 'Please refer to FIG. 3' Cut: protective cover in a cross-sectional view of a second embodiment, wherein the non-keyboard keyboard 30 is, for example, a resistive touch keyboard or a capacitive touch keyboard, which is a film 3 - a glass substrate 32 and a backlight module %, the backlight module 33 is located directly under the film 31 and the glass substrate, and the film η can be separated from the periphery of the glass substrate 32 by a suitable interval: * backlight module 33 for film 31 and glass substrate When the light is emitted, the pressure on the non-keyboard keyboard 30 can be generated by a finger, a pen or other medium to generate a key definition by the host connected to the buttonless keyboard. However, the resistive touch keyboard or the capacitive touch keyboard are well-known technologies, and the detailed principle and the M355505 are not the key features of the present invention. Therefore, this specification will not be described here. The field user flips the cover. When the protective cover 2G is exposed to 2G and the part of the keyless keyboard 3G is touched, in order to allow the user to recognize all the key characters on the relevant keyboard on the protective cover 20, the protective cover 20 must have a representative keyboard. The figure of all the key characters is shown. Therefore, please refer to FIG. 3 and FIG. 4, and FIG. 3 and FIG. 4 are two cross-sectional views of the protective cover of the novel portable electronic device in the second embodiment. In a second embodiment of the present invention, the protective cover 20 can be provided with a sheet body 40' having a button character. The key characters are printed on the surface of the sheet 40 by ink printing. The sheet body 4 can be directly disposed on the surface of the touch-free keyboard 30 for being pressed and placed in the first accommodating space h (see FIG. 3), or the sheet body 4 can be disposed on the protective cover 2〇 In one of the first valleys 23 (see FIG. 4), the second housing space 23 can be an open interlayer on the protective cover 20 for replacing the sheets 40 of different key character formats at any time. However, regardless of whether the sheet 4 is located in the first accommodating space 21 or the second accommodating space 23, the sheet 40 needs to correspond to the surface of the non-keyboard keyboard 3 which is available for pressing. Moreover, the protective cover 20 must be transparent to the sheet body 4, or at least the position of the button character corresponding to the sheet 40 must be transparent. When the backlight module 33 activates the backlight module 33 so that the backlight module 33 emits light from the non-keyboard keyboard 30 toward the protective cover 20, the user can recognize the corresponding button character on the protective cover 20. And pressing the corresponding button character on the no-keyboard 30. In addition, referring to Fig. 5, Fig. 5 is a cross-sectional view showing a protective cover of the novel portable electronic device in a third embodiment. In addition to providing the sheet 4 () having all the key words s of the M355505, the third embodiment of the present invention allows the user to recognize all the key words J on the relevant keyboard on the protective cover 2G. In the third embodiment, the protective cover 2 can be arranged with a plurality of light-transmissive apertures according to the shape and arrangement position of all the key words 7L on the relevant keyboard. Thus, when the non-keyboard keyboard 30 activates the backlight module 33', When the backlight module 33 emits light from the non-keyboard keyboard 3 to the protective cover 2, the user can recognize the corresponding button character on the protective cover 20 and press it on the no-key type key #30. Corresponding key characters. Finally, please refer to Fig. 6. Fig. 6 is a schematic view showing the operation of the novel portable electronic device. When the user flips the protective cover 20 to expose the display screen 11 and the protective cover 20 for dusting the buttonless keyboard 3〇, the user can adjust the viewing operation display screen 1 to provide the user with the tilt of the host 1G. A support member 13 can be set at any position of the viewing angle 'host ίο, so that the support member η can be detached from the main body 1 〇 on a floor surface, and the main body 1 〇 and the protective cover 20 can be pressed to press the keyless keyboard 3 () - face retention - pure corner Θ to prevent the host 1 〇 ® ® ® ® ® ® ® ® ® ® ® ® 导致 导致 导致 导致 导致 导致 导致 主机 主机 主机 主机 主机 主机 主机 主机 主机 主机The support frame I3 is pivotally disposed on the main body 10, and the obtuse angle θ can be adjusted through the support frame 13. In summary, the portable electronic device tool of the present invention has the following advantages: (4) By providing a detachable and suitable size keyboard, the operability and portability of the keyboard are improved. (b) By integrating the buttonless keyboard 3〇 with the protective cover 2〇, 2 when the portable electronic device i is engaged with the protective cover 2〇, the buttonless keyboard 30 is not forgotten or lost to improve carrying Convenience. 11 M355505 (C) The non-keyboard keyboard 30 does not have a push button to reduce the thickness of the protection 4 20, thereby reducing the size of the portable electronic device. Although the present invention has been disclosed above in the preferred embodiment, it is not intended to limit the present invention to any of the novels and the like, and it is possible to make various changes and refinements within the spirit and scope of the novel. Therefore, the scope of protection of this new model is defined by the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the above and other objects, features, advantages and embodiments of the present invention more apparent, the detailed description of the drawings is as follows: Figure 1 is a novel portable electronic Schematic diagram of the structure of the device. Figure 2 is an exploded view of the new portable electronic structure. 'Good device-------- Figure 3 is a cross-sectional view of the second embodiment of the protective cover of the new electronic device. The =4 figure is another cross-sectional view of an example of the novel portable electronic device. The protection cover of the coin is only a third embodiment. Fig. 5 is a cross-sectional view of the portable electronic device of the present invention. Figure 6 is a schematic diagram of the operation of the novel portable electronic device. 22. Symbols of the main components of the second pivoting member 1. 1 · Portable electronic device 12 M355505 ίο: Main unit 11 · Display screen 12: First pivoting member 121 · The second electrical connection portion 221: the second electrical connection portion 221: the second accommodating space 221 Light-transmissive hole 30: Buttonless keyboard 3 1 : Film 32: Glass substrate 33: Backlight module 40: Sheet 0: Obtuse angle
1313