201119545 六、發明說明： 【發明所屬之技術領域】 本發明係有關於一種手持式電子裝置，特別係有關於 一種具有特殊造型背蓋之手持式電子裝置。 【先前技術】 一般行動電話或PDA等手持式電子裝置的背側通常設 有可拆卸的背蓋，當内部電子元件故障或沒電時可將背蓋 打開以利於進行維修或更換電池。傳統的背蓋設計大多可 φ 透過滑動的方式與電子裝置的本體分離，然而對於具有特 殊造型的背蓋而言（例如葫蘆狀曲線造型之背蓋），滑動時 往往容易和電子裝置本體產生干涉而造成機構設計上的困 難。有鑑於此，如何針對特殊造型的背蓋設計出一種可方 便使用的連接機構始成為一重要之課題。 【發明内容】 本發明之一實施例提供一種手持式電子裝置，包括一 殼體以及一背蓋，前述殼體具有一容納部，容納部包括一 • 第一區間、一第二區間以及一窄區間，其中窄區間連接第 一、第二區間，且窄區間之寬度小於第一區間之寬度。前 述背蓋具有一第一段部、一第二孜部以及一窄部，其中窄 部連接第一、第二段部，且窄部之寬度小於第一段部之寬 度。當背蓋與殼體結合時，第一、第二段部以及窄部分別 結合於第一、第二區間以及窄區間内，當第一段部受一外 力作用而沿一第一方向脫離第一區間時，背蓋可沿手持式 電子裝置之一長軸方向滑動並脫離殼體，其中第一方向大 致垂直於前述長轴方向。 HTC098221 -0/0746-A42228-TW/Final 201119545 於一實施例中，當前述殼體更具有一第一卡合部9且 背蓋更具有一第二卡合部，當背蓋與殼體結合時，第一、 第二卡合部相互^卡合。 於一實施例中，前述第一卡合部位於第一區間，且第 二卡合部設置於第一段部。 於一實施例中，前述第'—合部為—^槽，第二卡合 部為一卡勾。 於一實施例中，前述第一、第二段部以及窄部形成一 葫蘆狀結構。 於一實施例中，前述窄部之寬度小於第二段部之寬度。 於一實施例中，前述窄部具有一曲線外型。 於一實施例中，前述背蓋及殼體為塑膠材質。 於一實施例中，前述背蓋具有可撓性。 為使本發明之上述目的、特徵、和優點能更明顯易懂， 下文特舉較佳實施例並配合所附圖式做詳細說明。 【實施方式】 首先請參閱第1A圖，本發明一實施例之手持式電子裝 置100包括一殼體10以及一背蓋20，其中背蓋20係以可 拆卸的方式結合於殼體10的背側，前述背蓋20係採用塑 膠材質或其他可撓性材質所製成，此外背蓋20也可以由一 個軟質材料接合兩個硬質塑膠片所構成。如第1A圖所示， 前述殼體10例如為塑蜞材質所製成，在殼體10背側形成 有一長條狀之容納部123，其包含有一第一區間11、一第 二區間12以及一窄區間13,且前述窄區間13係連接第一、 第二區間11、12。 HTC098221-0/0746-A42228-TW/Final 4 201119545 再請一併參閱第ΙΑ、1B圖，本實施例中的背蓋20具 有一葫蘆狀結構(calabash-shaped)，其主要包括一第一段部 21、一第二段部22以及一窄部23。前述背蓋20也可以由 軟硬塑膠材質所製成，其中窄部23兩側具有曲線外型並且 連接第一、第二段部21、22，此外窄部23的寬度係明顯 小於第一、第二段部21、22的寬度。如第2圖所示，前述 蓋體20之第一、第二段部_2卜22分別具有寬度Dl、D2， 位於第一、第二段部2卜22之間的窄部23則具有寬度d， • 其中d<Dl，且d<D2，藉此可呈現箱蘆狀結構。應了解的 是，當背蓋20與殼體10結合時，前述第一、第二段部2卜 22以及窄部.23係分別對應地結合於前述第一、第二區間 11、12以及窄區間13内。 此外，由第ΙΑ、1B圖中可以看出，前述殼體10背側 另設有一第一卡合部101，前述背蓋20則設有一第二卡合 部201，當背蓋20與殼體10結合時，第一、第二卡合部 101、201會相互卡合以防止背蓋20脫落。舉例而言，前 ® 述第一卡合部101可以是設置在第一區間Π内之卡槽，第 二卡合部201則可以是設置在第一段部.21上之卡勾，藉此 可將背蓋20穩固地結合於殼體10上。 接著請參閱第3圖，當欲將背蓋20由殼體10脫離時， 首先可施加一外力於背蓋20之第一段部21，並使其沿著 一第一方向A1掀起，此時背蓋20的第二卡合部201會與 殼體10上的第一卡合部101相互脫離，並使得背蓋20之 第一段部21脫離殼體10背侧之第一區間11而形成如第3 圖所示之狀態。 [S 1 HTC098221 -0/0746-A42228-TW/Final 5 201119545 再請參閱第4圖，當背蓋20之第一段部21被掀起後， 接著便可施加一外力將背蓋20朝一第二方向A2推移，由 於此時背蓋20上方之第一段部21已被掀起，故背蓋20在 滑動時不會再受到殼體10的干涉影響，其中第二方向A2 大致平行於手持式電子裝置100之一長軸方向（Y轴方 向），且第二方向A2大致垂直於第一方向A1。換言之，只 要背蓋20上方之第一段部21被掀起後，使用者便可輕易 地將背蓋20由殼體10上卸除，以利於進行後續的維修或 更換電池等動作。 相反地，當欲將背蓋20重新結合於殼體10上時，僅 需依照前述動作的反向順序操作即可，首先可將背蓋20沿 第二方向A2的反向滑入殼體10背側的容納部123内，使 得背蓋20的下半部先結合於容納部123内，接著再施加一 外力將背蓋20上方之第一段部21沿第一方向A1之反向 壓入容納部123之第一區間21内，如此便可完成整個結合 動作。 雖然本發明以前述之實施例揭露如上，然其並非用以 限定本發明。本發明所屬技術領域中具有通常知識者，在 不脫離本發明之精神和範圍内，當可做些許之更動與潤 飾。因此本發明之保護範圍當視後附之申請專利範圍所界 定者為準。 【圖式簡單說明】 第1A圖表示本發明一實施例之手持式電子裝置爆炸 圖； 第1B_圖奉示本發明一-實施例之背蓋示意圖； HTC098221 -0/0746-A42228-TW/Final 6 201119545 第2圖表示當背蓋與殼體結合之示意圖； 第3圖表示背蓋之第一段部被掀起時之示意圖；以及 第4圖表示背蓋相對於殼體沿第二方向滑動之示意圖。 【主要元件符號說明】 殼體10 手持式電子裝置100 第一卡合部101 容納部123 • 第一區間11 第二區間12 窄區間13 背蓋20 第二卡合部201 第一段部21 第二段部22 - 窄部.23 • 第一方向A1 第二方向A2201119545 VI. Description of the Invention: [Technical Field] The present invention relates to a handheld electronic device, and more particularly to a handheld electronic device having a special shaped back cover. [Prior Art] The back side of a hand-held electronic device such as a general mobile phone or PDA is usually provided with a detachable back cover, which can be opened to facilitate maintenance or battery replacement when internal electronic components are faulty or dead. Most of the traditional back cover design can be separated from the body of the electronic device by sliding. However, for a back cover with a special shape (such as a gourd-shaped curved back cover), it is easy to interfere with the electronic device body when sliding. The design is difficult. In view of this, how to design a convenient connection mechanism for a special-shaped back cover has become an important issue. SUMMARY OF THE INVENTION An embodiment of the present invention provides a handheld electronic device including a housing and a back cover. The housing has a receiving portion, and the receiving portion includes a first interval, a second interval, and a narrow portion. The interval, wherein the narrow interval is connected to the first and second intervals, and the width of the narrow interval is smaller than the width of the first interval. The back cover has a first section, a second jaw and a narrow portion, wherein the narrow portion connects the first and second segments, and the width of the narrow portion is smaller than the width of the first segment. When the back cover is combined with the housing, the first and second sections and the narrow portion are respectively combined in the first and second sections and the narrow section, and when the first section is subjected to an external force, the first section is separated from the first direction. In one interval, the back cover can slide along the longitudinal direction of one of the handheld electronic devices and away from the housing, wherein the first direction is substantially perpendicular to the long axis direction. HTC098221 -0/0746-A42228-TW/Final 201119545 In an embodiment, when the housing has a first engaging portion 9 and the back cover has a second engaging portion, when the back cover is combined with the housing When the first and second engaging portions are engaged with each other. In an embodiment, the first engaging portion is located in the first interval, and the second engaging portion is disposed in the first segment. In an embodiment, the first engaging portion is a slot, and the second engaging portion is a hook. In one embodiment, the first and second sections and the narrow portion form a gourd structure. In an embodiment, the width of the narrow portion is smaller than the width of the second portion. In one embodiment, the narrow portion has a curved profile. In an embodiment, the back cover and the casing are made of plastic material. In an embodiment, the back cover has flexibility. The above described objects, features, and advantages of the present invention will be more apparent from the description of the preferred embodiments. [First Embodiment] Referring first to Figure 1A, a handheld electronic device 100 according to an embodiment of the present invention includes a housing 10 and a back cover 20, wherein the back cover 20 is detachably coupled to the back of the housing 10. On the side, the back cover 20 is made of plastic material or other flexible material, and the back cover 20 can also be composed of two soft plastic sheets joined by a soft material. As shown in FIG. 1A, the housing 10 is made of, for example, a plastic material, and an elongated receiving portion 123 is formed on the back side of the housing 10, and includes a first section 11 and a second section 12, and A narrow section 13 and the narrow section 13 are connected to the first and second sections 11, 12. HTC098221-0/0746-A42228-TW/Final 4 201119545 Please refer to FIG. 1 and FIG. 1B again. The back cover 20 in this embodiment has a golabash-shaped structure, which mainly includes a first segment. The portion 21, a second segment 22, and a narrow portion 23. The back cover 20 may also be made of a soft and hard plastic material, wherein the narrow portion 23 has a curved outer shape on both sides and connects the first and second segments 21, 22, and the width of the narrow portion 23 is significantly smaller than the first. The width of the second section 21, 22. As shown in Fig. 2, the first and second sections _222 of the cover 20 have widths D1 and D2, respectively, and the narrow portion 23 between the first and second sections 2 has a width. d, • where d<Dl, and d<D2, whereby a box-like structure can be presented. It should be understood that when the back cover 20 is coupled with the housing 10, the first and second sections 2 and 22 are respectively correspondingly coupled to the first and second sections 11, 12 and narrow. Within the interval 13. In addition, as shown in FIG. 1B, the back side of the housing 10 is further provided with a first engaging portion 101, and the back cover 20 is provided with a second engaging portion 201, and the back cover 20 and the housing are provided. When the 10 is combined, the first and second engaging portions 101, 201 are engaged with each other to prevent the back cover 20 from coming off. For example, the first engaging portion 101 may be a card slot disposed in the first section, and the second engaging portion 201 may be a hook disposed on the first segment . The back cover 20 can be firmly coupled to the housing 10. Referring to FIG. 3, when the back cover 20 is to be detached from the housing 10, an external force may first be applied to the first section 21 of the back cover 20 and lifted along a first direction A1. The second engaging portion 201 of the back cover 20 is separated from the first engaging portion 101 on the housing 10, and the first segment 21 of the back cover 20 is separated from the first section 11 on the back side of the housing 10 to form. The status as shown in Figure 3. [S 1 HTC098221 -0/0746-A42228-TW/Final 5 201119545 Referring again to Fig. 4, when the first section 21 of the back cover 20 is lifted, an external force can be applied to move the back cover 20 toward a second The direction A2 is shifted. Since the first section 21 above the back cover 20 has been lifted, the back cover 20 is no longer affected by the interference of the housing 10 when sliding, wherein the second direction A2 is substantially parallel to the handheld electronic One of the devices 100 has a long axis direction (Y-axis direction), and the second direction A2 is substantially perpendicular to the first direction A1. In other words, as long as the first section 21 above the back cover 20 is lifted, the user can easily remove the back cover 20 from the housing 10 to facilitate subsequent maintenance or battery replacement. Conversely, when the back cover 20 is to be re-bonded to the housing 10, it is only necessary to operate in the reverse order of the foregoing actions. First, the back cover 20 can be slid into the housing 10 in the reverse direction of the second direction A2. The back side of the receiving portion 123 is such that the lower half of the back cover 20 is firstly engaged in the receiving portion 123, and then an external force is applied to press the first portion 21 above the back cover 20 in the opposite direction of the first direction A1. In the first section 21 of the accommodating portion 123, the entire joining operation can be completed in this way. Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. Those skilled in the art can make some changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a view showing an exploded view of a handheld electronic device according to an embodiment of the present invention; FIG. 1B is a schematic view showing a back cover according to a first embodiment of the present invention; HTC098221 -0/0746-A42228-TW/ Final 6 201119545 Figure 2 shows a schematic view of the back cover combined with the housing; Figure 3 shows a schematic view of the first section of the back cover when it is lifted; and Figure 4 shows the back cover slides in the second direction relative to the housing Schematic diagram. [Description of main component symbols] Case 10 Handheld electronic device 100 First engaging portion 101 Housing portion 123 • First section 11 Second section 12 Narrow section 13 Back cover 20 Second engaging portion 201 First segment 21 Two sections 22 - narrow part .23 • First direction A1 Second direction A2
HTC098221 -0/0746-A42228-TW/FinalHTC098221 -0/0746-A42228-TW/Final