200913848 υοκυ^δ-ι w zi695twf.doc/n 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種機殼，且特別是有關於一種 網路裝置的機殼。 【先前技術】 隨著網際網路的發展，例如是數據機（Modem)或是路 由器（Router)之網路設備亦不斷地推陳出新。其中，網路 n 設備通常會利用一機殼來保護其内部之電子元件，以防止 電子元件因受到不當外力而損壞。圖1即繪示為習知之一 種網路裝置的機殼。請參考圖1，習知之網路裝置的機殼 100是由一上殼體110以及一下殼體120所組成，電子元 件（未繪示）則是容置於上殼體1丨〇與下殼體丨2〇所構成 之容置空間中。在習知技術中，上殼體110設有多個連接 孔112，下殼體120設有多個對應於連接孔112之鎖合孔 122,而使用者可以利用螺絲130鎖固於連接孔112與鎖合 孔122之間，以使上殼體110與下殼體120能緊密接合， J 進而保護配設於上殼體110與下殼體120間之電子元件不 受外力破壞。 值侍一提的是，在組裝人員組裝機殼100或是網路裝 置因故損壞而需拆解機殼100以對網路裝置進行維修之過 程中’組裝人員或是維修人員需額夕卜利用鎖固工具（例如是 螺絲起子）始能將機殼之上殼體11G與下殼體12〇八 離，以，行組裝或是維修之工作。然而，利用鎖固工具^ 組裝或疋拆解機殼1〇〇將浪費較多時間，降低了紐裝或是 200913848 06P038-TW 23695twUoc/n 維修效率。此外，如 具 之 殼100即無法順利地= 兄中不易取得鎖固工具時，機 有較佳峨或^==”此，如何提供-4 機殼是一重要課題。'Ί仏組裝（或是拆解)效率 f發明内容】 本發明提供一稀媸拉^ n 組裝（拆解〜、有較佳組裝(折解) 方式與 較佳組裝（拆解）效率。 本發明提出—種機殼，其包括一 土於第-殼體之第二毂 適於组 合結構及第三卡合結 Ί於弟—謂之第-卡 結構。其中，第一私夕配设於第二殼體之第：卡合 而開槽圍繞按壓部使 雜，_成-按壓部， 徑之作動。這些第===沿著-第-移動路 具有-SC’且每-個第二卡合結構 構會與第-卡二體組裝於第-殼體時，第-卡合結 路徑上合=t’以限制第二殼體在第-移動 於第—殼體 ：卡冓則沿著—第二移動路徑配設 組裝於第-殼體時utt結構相對應，當第二殼體 互卡合，以限制第二與該第二卡合結構相 壓部受力 >'儿第" —多動路輕上之作動，當按 沿第-移動路徑移動至第_“二—卡合結構之凹槽會 構與第二卡路徑上，以使第三卡合結 二移動路徑相再相互卡合，其中第-移動路徑與第 200913848 uorujs-iw ^i695twf.doc/n 在本發明之-實施例中，第—殼體包括一底板、一背 板以及二相對狀側H殼體包括—與背板相對應之 前板以及-與底板相對應之項板，而第—卡合結構以及第 三卡合結構配設於翁，第二卡合賴紐於頂板與侧板 相鄰之二側邊。 、在本4月之貝施例中，底板、背板以及側板是一體200913848 υοκυ^δ-ι w zi695twf.doc/n IX. Description of the Invention: [Technical Field] The present invention relates to a casing, and more particularly to a casing for a network device. [Prior Art] With the development of the Internet, network devices such as modems or routers are constantly being introduced. Among them, network n devices usually use a casing to protect their internal electronic components to prevent electronic components from being damaged by improper external forces. Figure 1 is a block diagram of a conventional network device. Referring to FIG. 1 , the casing 100 of the conventional network device is composed of an upper casing 110 and a lower casing 120. Electronic components (not shown) are accommodated in the upper casing 1 and the lower casing. The body 丨 2〇 is formed in the accommodating space. In the prior art, the upper housing 110 is provided with a plurality of connecting holes 112, and the lower housing 120 is provided with a plurality of locking holes 122 corresponding to the connecting holes 112, and the user can lock the connecting holes 112 with screws 130. The upper housing 110 and the lower housing 120 are tightly coupled to the locking hole 122, and the electronic components disposed between the upper housing 110 and the lower housing 120 are protected from external forces. It is worth mentioning that the assembler or maintenance personnel need to be in the process of assembling the casing 100 or the network device for damage due to damage of the casing 100 to repair the network device. With the use of a locking tool (for example, a screwdriver), the upper casing 11G and the lower casing 12 can be separated from each other to perform assembly or maintenance work. However, using the locking tool ^ to assemble or disassemble the casing 1 will waste more time and reduce the maintenance efficiency of the new installation or 200913848 06P038-TW 23695twUoc/n. In addition, if the shell 100 is not smooth = when the brother is not easy to obtain the locking tool, the machine has better ^ or ^ == "this, how to provide a -4 casing is an important issue. 'Ί仏 Assembly (or It is a disassembly) efficiency. The present invention provides a thin-pull assembly (disassembly ~, better assembly (disassembly) mode and better assembly (disassembly) efficiency. The present invention proposes a kind of casing The second hub of the first housing is adapted to be a combined structure and the third engaging structure is coupled to the first-card structure. The first private day is disposed in the second housing. : engaging and slotting around the pressing portion to make the _ _ into - pressing portion, the path is activated. These === along the -the first moving path has -SC' and each second engaging structure is combined When the first card body is assembled to the first housing, the first engagement path is combined with t= to limit the second housing to move to the first housing: the cassette is along the second movement path. The utt structure is correspondingly arranged when assembled in the first housing, and the second housing is engaged with each other to limit the force of the second and the second engaging structure pressure portions > When the road is lightly actuated, when moving along the first-moving path to the _"two-engagement structure groove structure and the second card path, so that the third card-bonding two moving paths are mutually engaged Wherein the first-moving path and the number 200913848 uorujs-iw ^i695twf.doc/n In the embodiment of the invention, the first housing comprises a bottom plate, a back plate and two opposite side H-shells including - and back The board corresponds to the front board and the item board corresponding to the bottom board, and the first engaging structure and the third engaging structure are disposed on the body, and the second engaging line is adjacent to the two sides adjacent to the top board and the side board. In the case of this April, the bottom plate, the back plate and the side plates are integrated.
f本發明之-實施财，顺以及前板是—體成型。 姓構，第—卡合結構以及第三卡合 、、.σ構為卡榫’㈣二卡合結構為卡勾。 本發财提種驗，其包括— _ =1-殼體上設置多個第—卡合結構及多個第三:： 二？體上設置多個與第-卡合結構及第三卡合結 揭目^之第—卡合結構，每―個第二卡合結構具有-凹 :卡裝於第一殼體時’第-卡合結構會與第 卡合’第二殼體在第—移動路獲上之 第結構會與第二卡合結構相互卡合，以限制 上之作動，使第二殼體能穩固地 =裝於弟-殼體上。其中，第二殼體上更妓有盘第 父，連接之按壓部’當使用者施力雜 壓;：，之第二卡合結構會受力沿第-移動路徑作動，，t m在按壓部受力後會沿第—移動路徑移動至第二移動路 t使料二卡合結構與第二卡合結構*射目互卡合， 弟-殼體即可糊地與第—殼體分離。 ° 200913848 uoru^6-i w z3695twf.doc/n 本發明於第一殼體上設置多個第——^合結構以及多 個第三卡合結構，而於第二殼體上設置多個與第一卡合結 構以及第三卡合結構相對應之第二卡合結構，因此當第二 殼體組裝於第一殼體時，第一卡合結構以及第三卡合結構 能與第二卡合結構相互卡合，以使第二殼體能穩固地組裝 於第一殼體上。此外’本發明會於第二殼體上設置按壓部， 當使用者施力於按壓部時，與按壓部連接之第二卡合結構 會受力沿第一移動路徑作動。由於第三卡合結構配設於第 二移動路徑上，且凹槽在按壓部受力後會沿第一移動路徑 移動至第二移動路徑上，使得凹槽移動至第二移動路徑 上，因此第三卡合結構與第二卡合結構即不再相互卡合， 而第二殼體即可順利地與第一殼體分離。 相較於習知技術，本發明之機殼是利用簡單之結構卡 合關係來使第一殼體能緊密地與第二殼體卡合，而無需額 外利用辅助工具來進行組裝。同樣地，使用者僅需施力於 按壓部即可輕易地使第一殼體與第二殼體分離。換言之， 本發明之機殼具有較方便之喊與拆解方式，進而可提升 機殼之組裝與拆解效率。 >為，本發明之上述特徵和優點能更明顯易懂，下文特 舉較佳只施例，並配合所附圖式，作詳細說明如下。 【實施方式】 圖2A繪不為本發明較佳實施例之一種機殼的示意 圖’圖2B繪示為圖2八之機殼的分解圖，而圖2C繪示為 圖2B之第二殼體在另—視角的示意圖。請同時參考圖 200913848 uoru^6-i w ^o695twf.doc/n 2A、圖2B與圖2C，本實施例之機殼2〇〇主要包括一第一 殼體210、一適於組裝於第一殼體21〇之第二殼體22〇、多 個第一卡合結構230、多個第二卡合結構24〇以及多個第 三卡合結構250。其中，機殼2〇〇例如是網路裝置之機殼， 其適於保護網路農置中之電子元件，以防止電子元件受到 不當外力破壞。當然，在其他較佳實施例中，機殼2〇〇亦 適用於其他電子產品。特別的是，本實施例是利用第一卡 〇 合結構23〇、第二卡合結構240以及第三卡合結構250間 之卡合關係來使第一殼體21〇與第二殼體22〇緊密地相互 卡合。下文中，本實施例將針對機殼組成構件間之連接關 係作說明。 ^本貫施例中，第一卡合結構23〇配設於第一殼體 210，第二卡合結構24〇則是配設於第二殼體22〇，且與第 一卡合結構230相對應，而第三卡合結構25〇是沿著一第 二移動軸線L2與第-卡合結構23()分開且配設於第一殼 體210(第一移動路經L2例如是第二殼體22〇組装於第一 G 題21G之組裝路彳t，且第二移動路徑L2與第—移動路 徑L1相互垂直）’並與第二卡合結構24〇相對應。具體地 說，本實施例之第-殼體21〇例如是由一底板212、一背 板214以及二相對應之側板216所組成，第二殼體22〇例 如疋由-與月板2M相對應之前板η2以及一與底板犯 相對應之頂板224所組成。其中，底板犯、背板叫以 及條216例如是—體成型，頂板222以及前板224亦可 以疋-體成型，而例如是卡榫之第一卡合結構23〇以及第 200913848 υο^υ^δ-ι w zj695twf.doc/n 三卡合結構250可配設於側板216之内壁，例如是卡勾之 第二卡合結構240則可配設於頂板224與側板216相鄰之 二侧邊 224a 與 224b。 如此一來’當第二殼體220組裝於第一殼體21〇時， 第合結構即會與第二卡合結構相卡合，進而限制 第二殼體240在第一移動路徑L1上之作動。同樣地，第 二卡合結構250會與第二卡合結構240相互卡合，以限制 第二殼體220在第二移動路徑L2上之作動。由於第—卡 合結構230能限制第二卡合結構240在第一移動路徑Ll 上之位移’且第三卡合結構25〇又能限制第二卡合結構24〇 在第二移動路徑L2上之位移，因此第二殼體22〇可藉由 第一卡合結構230、第二卡合結構240以及第三卡合結構 250間之卡合關係而穩固地組裝於第一殼體210。 此外’本實施例亦於第二殼體220上設有至少一開槽 226 ’以形成一按壓部228 ’而使用者僅需對按壓部228施 予一下壓力量，即可使第二卡合結構24〇與第三卡合結構 250不再相互卡合，進而使第二殼體22〇能沿著第二移動 路徑L2朝向遠離第一殼體21〇之方向位移，以與第—殼 ，210分離，亦即機殼2〇〇由組裝狀態（如圖2a所示）回 復至拆解狀態（如圖2B所示）。具體地說，本實施例之開 槽226例如是呈「门」字型，其設置於第二殼體22〇之頂 ，D4 ’且開槽226是圍繞按壓部228。此外，本實施例之 第一卡合結構240則是與按壓部228連接，且每一個第二 卡合結構240設有一適於供第三卡合結構 250通過之凹槽 200913848 u〇ruj>〇-x w ^695twf.doc/n 〇 242。因此，當按壓部228受力沿著第一移動路徑以作動 時，按壓部228會產生彈性形變，連帶地使第二卡合結構 mo =著第一移動路徑L1移動。由於第三卡合結構25〇配 設於第二移動路徑L2上，且凹槽242在按壓部228受力 ^由第-移動路徑L1位移至第二祕路徑L2上，使得 第二卡合結構240上之凹槽242可移動至第二移動路徑^ 上，因此第三卡合結構25〇與第二卡合結構謂即不再相 互卡合’而第二殼體22G即可順利地沿著第二移動路徑L2 朝向遠離第-殼體2H)之方向移動，以與第一殼體2i〇分 紅上所述’本發明是在第一殼體上設置多個第一人 、:構：土多個第三卡合結構’而於第二殼體上設置多個： 第-卡合結_及第三卡合結構構、f The invention - the implementation of the financial, smooth and front panels is body-formed. The surname structure, the first-engagement structure and the third engagement, the .σ structure is a card's (four) two-click structure is a hook. This fortune raises the test, which includes - _ =1 - multiple number of first snap-fit structures and multiple thirds:: two? The body is provided with a plurality of first engaging structures and a third engaging structure, and each of the second engaging structures has a concave shape: when the card is mounted on the first casing, the first The engaging structure and the first engaging member of the second housing are engaged with the second engaging structure at the first moving path to restrict the upper movement, so that the second housing can be firmly mounted Brother - on the shell. Wherein, the second housing is further provided with the first father of the disk, and the pressing portion of the connection is used when the user applies a force to the pressure; the second engaging structure is forced to move along the first moving path, and tm is in the pressing portion. After the force is applied, the second moving path is moved along the first moving path, so that the material two engaging structure and the second engaging structure* are mutually engaged, and the brother-shell can be separated from the first housing. ° 200913848 uoru^6-iw z3695twf.doc/n The present invention provides a plurality of first-in-one structures and a plurality of third engaging structures on the first casing, and a plurality of a first engaging structure and a third engaging structure corresponding to the second engaging structure, so that when the second housing is assembled to the first housing, the first engaging structure and the third engaging structure can be engaged with the second engaging structure The structures engage each other to enable the second housing to be securely assembled to the first housing. Further, the present invention provides a pressing portion on the second casing, and when the user applies the pressing portion, the second engaging structure connected to the pressing portion is forced to move along the first moving path. The third engaging structure is disposed on the second moving path, and the groove moves along the first moving path to the second moving path after the pressing portion is forced, so that the groove moves to the second moving path, so The third engaging structure and the second engaging structure are no longer engaged with each other, and the second housing can be smoothly separated from the first housing. In contrast to conventional techniques, the housing of the present invention utilizes a simple structural snap relationship to enable the first housing to be tightly engaged with the second housing without the need for additional aids for assembly. Similarly, the user can easily separate the first housing from the second housing by applying a force to the pressing portion. In other words, the casing of the present invention has a more convenient shouting and disassembling manner, thereby improving the assembly and disassembly efficiency of the casing. The above features and advantages of the present invention are more apparent and understood, and the following detailed description is given by way of example only. 2A is a schematic view of a casing of a preferred embodiment of the present invention. FIG. 2B is an exploded view of the casing of FIG. 2B, and FIG. 2C is a second casing of FIG. 2B. In another perspective view. Please refer to FIG. 200913848 uoru^6-iw ^o695twf.doc/n 2A, FIG. 2B and FIG. 2C. The casing 2〇〇 of the embodiment mainly includes a first casing 210 and a casing suitable for assembly in the first casing. The second housing 22 of the body 21 , the plurality of first engaging structures 230 , the plurality of second engaging structures 24 , and the plurality of third engaging structures 250 . The casing 2 is, for example, a casing of a network device, and is suitable for protecting electronic components in the network to prevent the electronic components from being damaged by improper external force. Of course, in other preferred embodiments, the casing 2 is also suitable for use in other electronic products. In particular, in this embodiment, the first housing 21 and the second housing 22 are made by the engagement relationship between the first card engaging structure 23, the second engaging structure 240, and the third engaging structure 250. 〇 Closely snap to each other. Hereinafter, the present embodiment will be described with respect to the connection relationship between the components of the casing. In the present embodiment, the first engaging structure 23 is disposed on the first housing 210, and the second engaging structure 24 is disposed in the second housing 22, and is coupled to the first engaging structure 230. Correspondingly, the third engaging structure 25 is separated from the first engaging structure 23 () along a second moving axis L2 and disposed in the first housing 210 (the first moving path L2 is, for example, the second The housing 22 is assembled to the assembly path t of the first G problem 21G, and the second movement path L2 is perpendicular to the first movement path L1) and corresponds to the second engagement structure 24A. Specifically, the first housing 21 of the present embodiment is composed of, for example, a bottom plate 212, a back plate 214, and two corresponding side plates 216, and the second housing 22 is, for example, connected to the moon plate 2M. Corresponding to the front plate η2 and a top plate 224 corresponding to the bottom plate. Wherein, the bottom plate, the back plate and the strip 216 are formed, for example, and the top plate 222 and the front plate 224 can also be formed in a body-shaped manner, for example, the first engaging structure 23 of the cassette and the 200913848 υο^υ^ Δ-ι w zj695twf.doc/n The three-knit structure 250 can be disposed on the inner wall of the side plate 216. For example, the second engaging structure 240 of the hook can be disposed on the two sides adjacent to the top plate 224 and the side plate 216. 224a and 224b. In this way, when the second housing 220 is assembled to the first housing 21, the first structure is engaged with the second engaging structure, thereby restricting the second housing 240 on the first moving path L1. Actuate. Similarly, the second engaging structure 250 and the second engaging structure 240 are engaged with each other to restrict the second housing 220 from acting on the second moving path L2. Since the first engaging structure 230 can limit the displacement of the second engaging structure 240 on the first moving path L1 and the third engaging structure 25 can limit the second engaging structure 24 to the second moving path L2. The second housing 22 is stably assembled to the first housing 210 by the engagement relationship between the first engaging structure 230, the second engaging structure 240, and the third engaging structure 250. In addition, the second embodiment 220 is provided with at least one slot 226 ′ to form a pressing portion 228 ′, and the user only needs to apply a pressure to the pressing portion 228 to enable the second clamping. The structure 24〇 and the third engaging structure 250 are no longer engaged with each other, so that the second housing 22 can be displaced along the second moving path L2 away from the first housing 21〇, and the first shell, 210 is separated, that is, the casing 2 is returned to the disassembled state by the assembled state (as shown in Fig. 2a) (as shown in Fig. 2B). Specifically, the slit 226 of the present embodiment is, for example, in the shape of a "gate" which is disposed on the top of the second casing 22, D4' and the slit 226 surrounds the pressing portion 228. In addition, the first engaging structure 240 of the embodiment is connected to the pressing portion 228, and each of the second engaging structures 240 is provided with a groove suitable for the third engaging structure 250 to pass through. 200913848 u〇ruj> -xw ^695twf.doc/n 〇242. Therefore, when the pressing portion 228 is forced to move along the first moving path, the pressing portion 228 is elastically deformed, and the second engaging structure mo = the first moving path L1 is moved. Since the third engaging structure 25 is disposed on the second moving path L2, and the groove 242 is biased by the pressing portion 228 to be displaced by the first moving path L1 to the second secret path L2, the second engaging structure is obtained. The groove 242 on the 240 can be moved to the second moving path ^, so that the third engaging structure 25 and the second engaging structure are no longer engaged with each other, and the second housing 22G can smoothly follow along The second moving path L2 moves away from the first housing 2H) to distinguish it from the first housing 2i. The present invention is to provide a plurality of first persons on the first housing. a plurality of third engaging structures ′ and a plurality of second housings are disposed: a first engaging knot and a third engaging structure,
因殼體組裝於第—殼體時，第一卡』二 二卡σ、：構能與第二卡合結構相互卡合。其中，第人 Ϊ =第二卡合結構之卡合_能關第二殼體在 移動路徑上之作動，第三卡合結構與第二卡合4之二 關=能關第二殼體在—第二移動路徑上之軸，二 设體即能穩固地組裝於第—殼體上。 弟— 此外，本發明會於第二殼體上設 施力於按壓部時’按壓部會受力沿著第一移動路者 第ί卡合結構之凹槽沿著第—移動路㈣ί至ί: 且凹槽在健部受力後會位移至第二移動路後=第 11 200913848 w /j695twf.doc/n 二卡合結構與第二卡合結構即料相互卡合，而第二殼體 即可順利地沿著第二移動路徑朝向遠離第—殼體之方 動’以與第一殼體分離。 ° 相較於I知技術，本發明之機殼有下列優點： (一） 由於本發明之機殼是利用簡單之結構卡合 來使第-殼體能緊密地與第二殼體卡合，而無需額外利用 輔助工具來進行組裳。同樣地，使用者僅需施力於按屡部 〇 料輕易地使第-殼體與第二殼體分離。換言之，本發明 《機殼具有較方便之組裝與拆解方式，進而可提升機^之 組裝與拆解效率。 (二） 由於本發明之機殼是利用簡單之結構卡合關係 來使第-殼體能緊密地與第二殼體卡合，因此無需額外利 用螺絲等鎖固元件來對第—殼體與第二殼體進行鎖固，即 本發明之機殼有較低之產品成本。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何所屬技術領域中具有通常知識者，在不 G 脫離本發明之精神和範圍内，當可作些許之更動與潤飾， 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】 圖1繪不為習知之一種網路裝置的機殼。 圖2A繪不為本發明較佳實施例之一種機殼的示意 圖。 圖2B繪示為圖2A之機殼的分解圖。 200913848 νυΐ- W^LJ- JL VY ^J695twf.doc/n 圖2C繪示為圖2B之第二殼體在另一視角的示意圖。 【主要元件符號說明】 100 ： 機殼 110 ： 上殼體 112 ： 連接孔 120 ： 下殼體 122 ： 鎖合孔 130 ： 螺絲 200 ： 機殼 210 ： 第一殼體 212 ： 底板 214 ： 背板 216 ： 侧板 220 ： 第二殼體 222 ： 前板 224 ： 頂板 224a 、224b :頂板側邊 226 ： 開槽 228 ： 按壓部 230 ： 第—^合結構 240 ： 第二卡合結構 242 ： 凹槽 250 ： 第三卡合結構 L1 ： 第一移動路徑 L2 ： 第二移動軸線 13When the housing is assembled to the first housing, the first card and the second card are engaged with each other. Wherein, the first person Ϊ = the engagement of the second engaging structure _ can close the movement of the second housing on the moving path, the third engaging structure and the second engaging 4 are two closed = the second housing can be closed - The shaft on the second moving path can be firmly assembled on the first housing. In addition, the present invention will be placed on the second casing to force the pressing portion. The pressing portion will be forced along the groove of the first moving path of the first clamping structure along the first moving path (four) to ί: And the groove is displaced to the second moving path after the force is applied to the second moving path=11th 200913848 w /j695twf.doc/n The second engaging structure and the second engaging structure are mutually engaged, and the second casing is It can smoothly move away from the first housing along the second moving path to be separated from the first housing. ° Compared with the prior art, the casing of the present invention has the following advantages: (1) Since the casing of the present invention is snapped by a simple structure, the first casing can be closely engaged with the second casing, and There is no need to use additional tools for grouping. Similarly, the user only has to apply force to easily separate the first housing from the second housing in accordance with the repeated feed. In other words, the casing of the present invention has a more convenient assembly and disassembly method, thereby improving the assembly and disassembly efficiency of the machine. (2) Since the casing of the present invention utilizes a simple structural engagement relationship to enable the first casing to be tightly engaged with the second casing, it is not necessary to additionally use a locking member such as a screw to the first casing and the The two housings are locked, that is, the casing of the present invention has a lower product cost. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make a few modifications and changes without departing from the spirit and scope of the invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 depicts a housing of a conventional network device. Figure 2A depicts a schematic view of a housing that is not a preferred embodiment of the present invention. 2B is an exploded view of the casing of FIG. 2A. 200913848 νυΐ- W^LJ- JL VY ^J695twf.doc/n FIG. 2C is a schematic view showing the second housing of FIG. 2B in another perspective. [Main component symbol description] 100 : Case 110 : Upper case 112 : Connection hole 120 : Lower case 122 : Lock hole 130 : Screw 200 : Case 210 : First case 212 : Base plate 214 : Back plate 216 : Side plate 220 : Second casing 222 : Front plate 224 : Top plate 224 a , 224 b : Top plate side 226 : Slot 228 : Pressing portion 230 : First structure 240 : Second engaging structure 242 : Groove 250 : third engagement structure L1 : first movement path L2 : second movement axis 13