201134354 六、發明說明： 【發明所屬之技術領域】 本發明係有關於一種機箱結構，特別是一種可防止機箱下 沉之機箱結構及其製造方法。 【先前技術】 目前在電子裝置之機箱板材的加工過程中，時常需於構成 機相之板材上壓製加強肋、補強筋等加工結構以增進機箱的名士 構強度。然而當裝設一物件於此壓製成品的機箱時，因為受到 裝設物件所產生之下壓力的影響’會使原本平整之表面朝向某 一特定方向產生一凹陷、下沉或曲折之不平整結構(sa幻此不 平整結構的產生使機箱在裝設於機架(rack)時，容易造成上、 下二機箱於機架上相互干涉、碰撞的情形發生，進而造成機箱 受損以及組裝人員在安裝上的困擾。 如以舰器之機箱為例，當機箱内設置有如散熱風扇架、 散熱風扇、爾及其他烟電子組倾，將錢箱目為長時間 承受電子組件的重量以及地心引力的影響，導致位於機箱之殼 體產生不平整結構。並且，由於词服器機架所具有的複數個存 放空間之間的距離相當接近。因此，當飼服器置入於存放空間 時’位於下方的伺服器將受到上方舰器之不平整結構的影響 而無法順獅容姐如内。_，在長時_置放後， 將使；伺服器之間因為不平整結構干涉而相互接觸，因此容易 影響伺服器於運作時的散熱作用，進而產生伺服器的效能降低 201134354 及過熱毁損的情形。 ^目前針賴生不平整結構簡決方法，通常為加強機 箱的轉強度、改變模具設計與成形能力、妓透過嚴格品質 的控管等方絲達成。—般常見賴法·構賴箱之板材底 板上針對谷$產生不平整結構的區域打上複數條麼線，但此塵 線僅能改善其於板材上同―延伸方向的不平制題。因此若要 同時解決整個機箱底板不平整的結構面問題，則需於底板上打 出相當數量的魏或職線的深度打更深。—這觀線的設 置方式涉及對底板身結構的破壞，愈多賴線設置將愈會影響 板材的結構強度，並且無法對整個底板上容易產生不平整結構 的區域提供一有效的解決辦法。 因此，習知技術在解決機箱於裝設物件後容易產生不平整 結構的做法上，係針對底板上單一轴向區域以壓線進行補強， 除了需要重袓6又置壓線於板材上而造成做工程序的繁雜外，同 時也容易造成底板結構強度的破壞。 【發明内容】 鑒於以上的問題，本發明提供一種機箱結構及其預成形 方法，藉以改良習知機箱於裝配物件後，機箱承載物件之一側 面於荷重後容易產生不平整結構，造成複數個機箱置放於機架 時，位於機架上、下方之二機箱產生相互干涉、碰撞的問題。 本發明揭露一種機箱結構，包括一第一殼體及一第二殼 體。.第一殼體具有一承載板及相對之二側壁，二側壁設置於咸^ 201134354 載板之一側邊。第二殼體具有一底板及相對之二側板，二側板 設置於底板之二側邊，且二侧板與底板之間分別具有一角度小 於90度的初始夾角。其中，第二殼體設置於第一殼體内，第 二殼體之二側板分別靠攏於第一殼體之二側壁，且第二殼體之 底板係於第一殼體内構成一曲面。 本發明並揭露一種機箱結構之預成形方法，其包括以下步 驟：提供一第一殼體，具有一承載板及相對之二侧壁，二侧壁 設置於承載板之二側邊；提供m具有—底板及相對 之二侧板，二側板設置於底板之二侧邊；彎折第二殼體之二側 板，令二侧板分別與底板之間具有一初始失角，且初始夾角之 角度小於90度；裝設第二贿於第—殼體内；以及板動第二 殼體之二侧板，使二側板分別靠攏於二侧壁，以令底板朝向相 反於承載板之方向彎折並於第一殼體内構成一曲面。 本發明所揭露之機箱結構及其賊形方法，於機箱結構之 第二殼體上將二嫩相對底板胃折，使底板在第二紐固定於 第-设體後，於第-殼體内構成—曲面。機箱結構可藉由此曲 面所具有之表面張力，克服物件於機箱結構内所產生的下壓 力’並於第二殼體之底板與第—殼體之承载板之咖成一緩衝 區間，可避免第二殼體之底板朝向承載板之方向下沉，並能讓 第-殼體之承鑛轉於平坦職。因此，#複數個機箱結構 設置於機架時’分職放於上、下位置之二機箱將不會產生相 互干涉、碰撞的情形發生。 201134354 以上之關於本發明内容之說明及以下之實施方式之說明 係用以示範與解釋本發明之原理，並且提供本發明之專利申請 範圍更進一步之解釋。 【實施方式】 本發明所述之機箱結構之預成形方法，所指稱之機箱結構 係由具有延展性之金屬板件所組成，且機箱結構係為應用於電 子裝置之機殼'或是鐵櫃、鐵箱等需經加工處理壓製成形之機 箱結構，本發明係以構成伺服器外殼之機箱結構為例，但並不 以此為限。 請同時參閱「第1圖」至「第3圖」，本發明第一實施例 所揭露之機箱結構之預成形方法，首先提供一第一殼體 10(S101)，第一殼體10具有一承載板110及相對之二侧壁 120 ’二侧壁12〇分別設置於承載板11〇之二侧邊，且二側壁 120垂直於承載板110，使承載板110及二側壁120之間形成 一谷置空間130。接著，提供一第二殼體20(S102)，第二殼體 具有一底板210及相對之二侧板220 ’二侧板220分別設置於 底板210之二侧邊，使底板210及二侧板220之間形成另一容 置空間230。之後，彎折第二殼體20之二侧板220，使二側板 220分別與底板210之間形成一小於90度的初始夾角β !(S103) ’例如為角度大小介於85度至89度的初始夾角$ i。 在本發明之第一實施例中係以初始夾角θι為88度做為舉例 說明，但並不以此為限。 [ 201134354 其中’提供第二殼體20以及彎折第二殼體20之二側板 220的步驟，係可於提供第一殼體10之步驟前進行，此僅為 操作上先後順序的不同，但並非用以限定本發明。 請配合「第4圖」，於第二殼體20之二側板220分別與底 板210之間形成初始夾角心後，將第二殼體2〇置入於第一殼 體1〇之容置空間130内(S104)。接著，扳動第二殼體20之二 側板220 ’使二侧板220分別於第二殼體2〇之二相對側靠攏 於第一殼體10之二側壁12〇。此時第二殼體2〇之底板21〇的 相對二侧邊受到二侧板22〇的推抵而產生一反作用力，進而使 底板210朝向相反於第一殼體1〇之承載板11〇的方向彎折， 並於第一殼體10内構成一曲面211(S105)。 如「第5圖」和「第6圖」所示，之後，提供複數個固定 件30，如鉚釘、螺絲等，分別穿設於過第二殼體2〇之二側板 220相對於底板21〇之另一端，並固定於第一殼體1〇之二側 壁120相對承載板11〇之另一端，使第二殼體2〇以底板21〇 構成一曲面211的形式固定於第一殼體1〇内(31〇6)。此外， 另可選擇性的以複數個固定件30穿設過第二殼體2〇之底板 210並固定於第-殼體之承載板11()(圖中未示），以進一步 的增加第二殼體2G結合於第—殼體1Q之翻性^其中，提供 複數侧耕30之频，村鱗接或其他_定方式取代 固定件30的使用，藉以使第二殼體2〇固定於第一殼體⑴内， 並使第二殼體20之底板210常態的維持曲面211之形式。 201134354 請參閱「第7圖」和「第8圖」，在預成形步驟結束後， 第二殼體20之底板210即於機箱結構内構成一曲面211，並 且於第二殼體20之底板210及第一殼體1〇之承載板110之間 具有一間隙。因此，當置入一物件4〇(如散熱風扇架、電路板 或記憶體插槽等)於第二殼體20之容置空間230時，物件40 於第二殼體20之底板210上所形成的下壓力，將受到底板21〇 之曲面211所具有之表面張力推抵，並同時藉由底板21〇與承 載板110之間的間隙，提供一緩衝區間，使底板210可常態地 維持於彎曲形態，以避免物件40所形成的下壓力直接的施加 於第一殼體10之承載板110,可避免第一殼體1〇之承載板u〇 朝相反於底板210之方向彎曲、下沉。 因此，當複數個機箱結構設置於機架時(圖中未示），位於 機架上、下方一相鄰位置的機箱結構將不會產生相互干涉、碰 撞的情形，進而讓機箱結構可順利的安裝於機架上，並可避免 機箱結構因碰撞而造成損壞。201134354 VI. Description of the Invention: [Technical Field] The present invention relates to a chassis structure, and more particularly to a chassis structure capable of preventing a chassis from sinking and a method of manufacturing the same. [Prior Art] At present, in the processing of the chassis of an electronic device, it is often necessary to press the reinforcing ribs, the reinforcing ribs and the like on the plate constituting the machine phase to enhance the strength of the chassis. However, when an object is installed on the finished product casing, the surface of the original flat surface is deformed to a specific direction to cause a concave, sinking or tortuous uneven structure due to the influence of the pressure generated by the mounted object. (The occurrence of the uneven structure of the sa is such that when the chassis is mounted on a rack, it is easy for the upper and lower chassis to interfere and collide with each other on the frame, thereby causing damage to the chassis and assembly personnel. For example, in the case of the chassis of the ship, when the chassis is provided with a cooling fan frame, a cooling fan, and other smoke electronic groups, the weight of the money box is long-term to withstand the weight of the electronic components and gravity. The effect is that the housing in the chassis produces an uneven structure. Moreover, since the distance between the plurality of storage spaces of the word processor rack is relatively close, therefore, when the feeder is placed in the storage space, it is located The server below will be affected by the uneven structure of the upper ship and will not be able to follow the lion's sister. _, after a long time _ placement, will be made; The whole structure interferes and contacts each other, so it is easy to affect the heat dissipation effect of the servo during operation, and thus the performance of the servo is reduced by 201134354 and the overheating damage is caused. ^ The current method of fixing the uneven structure is usually to strengthen the chassis. Turning strength, changing mold design and forming ability, and achieving strict quality control, etc. are achieved. However, this dust line can only improve the unevenness of the same direction in the sheet. Therefore, if it is necessary to solve the problem of uneven structural surface of the entire chassis floor, it is necessary to play a considerable amount of Wei or line depth on the bottom plate. Playing deeper.—The setting of this line of sight involves the destruction of the structure of the bottom plate. The more the line is set, the more it will affect the structural strength of the plate, and it will not provide an effective solution to the area of the entire floor that is prone to uneven structure. Therefore, the conventional technology is aimed at solving the problem that the chassis is prone to uneven structure after the object is installed. The single axial region of the plate is reinforced by the pressing line, and the complicated work procedure is required in addition to the need to re-clamp 6 and press the wire on the plate. At the same time, the structural strength of the bottom plate is easily broken. [Invention] In view of the above problems The present invention provides a chassis structure and a pre-forming method thereof, so as to improve the conventional chassis, after assembling the object, one side of the chassis carrying object is easy to generate an uneven structure after the load, and the plurality of chassis are located when placed in the rack. The two chassis on the upper and lower sides of the rack have mutual interference and collision problems. The present invention discloses a chassis structure including a first housing and a second housing. The first housing has a carrier plate and opposite side walls. The two side walls are disposed on one side of the carrier board of the 201134354. The second housing has a bottom plate and two opposite side plates, the two side plates are disposed on two sides of the bottom plate, and the two side plates and the bottom plate respectively have an angle Initial angle less than 90 degrees. The second housing is disposed in the first housing, and the two side plates of the second housing are respectively disposed on the two side walls of the first housing, and the bottom plate of the second housing is formed in the first housing to form a curved surface. The present invention also discloses a method for pre-forming a chassis structure, comprising the steps of: providing a first housing having a carrier plate and two opposite side walls, the two side walls being disposed on two sides of the carrier plate; - a bottom plate and two opposite side plates, the two side plates are disposed on two sides of the bottom plate; the two side plates of the second casing are bent, so that the two side plates respectively have an initial lost angle with the bottom plate, and the initial angle of the angle is smaller than 90 degrees; installing a second bribe in the first housing; and sliding the two side plates of the second housing, so that the two side plates are respectively close to the two side walls, so that the bottom plate is bent in a direction opposite to the carrier plate and A curved surface is formed in the first housing. According to the invention, the chassis structure and the thief-shaped method thereof are configured to fold the second tender surface relative to the bottom plate on the second casing of the chassis structure, so that the bottom plate is fixed in the first body after the second button is installed in the first casing. Composition - surface. The chassis structure can overcome the downward pressure generated by the object in the chassis structure by the surface tension of the curved surface, and can be avoided between the bottom plate of the second casing and the carrier plate of the first casing. The bottom plate of the second casing sinks in the direction of the carrier plate, and the bearing of the first casing can be transferred to a flat position. Therefore, when multiple chassis structures are installed in the rack, the two chassis placed in the upper and lower positions will not interfere with each other and collide. The description of the present invention and the following description of the embodiments of the present invention are intended to illustrate and explain the principles of the invention, and to provide further explanation of the scope of the invention. [Embodiment] The pre-forming method of the chassis structure according to the present invention, the so-called chassis structure is composed of a malleable metal plate member, and the chassis structure is applied to the casing of the electronic device or the iron cabinet. The present invention is exemplified by a chassis structure constituting a server casing, but is not limited thereto. Please refer to FIG. 1 to FIG. 3 simultaneously. The pre-forming method of the chassis structure disclosed in the first embodiment of the present invention first provides a first housing 10 (S101), and the first housing 10 has a first housing 10 The carrier board 110 and the two side walls 120 ′ are disposed on the two sides of the carrier board 11 , and the two side walls 120 are perpendicular to the carrier board 110 , so that a carrier board 110 and the two side walls 120 are formed between the two sides. The valley space 130. Next, a second housing 20 (S102) is provided. The second housing has a bottom plate 210 and two opposite side plates 220. The two side plates 220 are respectively disposed on two sides of the bottom plate 210, so that the bottom plate 210 and the two side plates are provided. Another accommodating space 230 is formed between 220. Thereafter, the two side plates 220 of the second casing 20 are bent such that the two side plates 220 and the bottom plate 210 respectively form an initial angle β of less than 90 degrees (S103) 'for example, the angle is between 85 degrees and 89 degrees. The initial angle of $ i. In the first embodiment of the present invention, the initial angle θι is 88 degrees as an example, but is not limited thereto. [201134354] The step of providing the second casing 20 and bending the two side plates 220 of the second casing 20 may be performed before the step of providing the first casing 10, which is only a difference in the order of operation, but It is not intended to limit the invention. With the initial drawing angle between the two side plates 220 of the second casing 20 and the bottom plate 210, the second casing 2 is placed in the accommodating space of the first casing 1〇. Within 130 (S104). Then, the two side plates 220' of the second casing 20 are pulled to close the two side plates 220 to the two side walls 12 of the first casing 10 on opposite sides of the second casing 2, respectively. At this time, the opposite sides of the bottom plate 21 of the second casing 2 are pushed by the two side plates 22 to generate a reaction force, so that the bottom plate 210 faces the carrier plate 11 opposite to the first casing 1〇. The direction is bent, and a curved surface 211 is formed in the first casing 10 (S105). As shown in Fig. 5 and Fig. 6, after that, a plurality of fixing members 30, such as rivets, screws, etc., are provided, respectively, which are respectively disposed on the two side plates 220 of the second housing 2〇 with respect to the bottom plate 21 The other end of the second housing 2 is fixed to the first housing 1 in the form of a curved surface 211. 〇 (31〇6). In addition, a plurality of fixing members 30 are selectively passed through the bottom plate 210 of the second casing 2 and fixed to the carrier plate 11 (not shown) of the first casing to further increase the number The second casing 2G is coupled to the volatility of the first casing 1Q, and provides the frequency of the plurality of side ploughs 30, and the village scales or other stipulations replace the use of the fixing member 30, so that the second casing 2 is fixed to the second casing 2 In the first casing (1), the bottom plate 210 of the second casing 20 is maintained in the form of a curved surface 211. 201134354 Please refer to FIG. 7 and FIG. 8 . After the pre-forming step, the bottom plate 210 of the second casing 20 forms a curved surface 211 in the chassis structure and is disposed on the bottom plate 210 of the second casing 20 . There is a gap between the carrier plate 110 of the first housing 1 . Therefore, when an object 4 (such as a heat dissipation fan frame, a circuit board or a memory slot, etc.) is placed in the accommodating space 230 of the second casing 20, the object 40 is placed on the bottom plate 210 of the second casing 20. The formed downward pressure is pushed against the surface tension of the curved surface 211 of the bottom plate 21, and at the same time, a gap between the bottom plate 21 and the carrier plate 110 is provided, so that the bottom plate 210 can be normally maintained. In the curved form, the downward pressure formed by the object 40 is directly applied to the carrier plate 110 of the first casing 10, and the carrier plate u of the first casing 1 is prevented from being bent and bent in the opposite direction to the bottom plate 210. sink. Therefore, when a plurality of chassis structures are disposed in the rack (not shown), the chassis structure located at an adjacent position on the rack and below will not interfere with each other and collide, thereby making the chassis structure smooth. It is mounted on the rack and can avoid damage to the chassis structure due to collision.
請同時參閱「第9圖」至「第n圖」，本發明第二實施例 所揭露之機箱結構的預成形方法，首先提供一第一殼體 10(S201) ’第一殼體1〇具有一承載板11〇及相對之二側壁 120，一側壁120分別設置於承載板之二侧邊，使承載板 110及二側壁120之間形成一容置空間13〇。接著彎折第一 殼體10之二側壁120，使二侧壁12〇及承載板之間形成一角 度小於90度之預成形夾角02(S2〇2)，例如角度為89度之預土S 201134354 形夾角Θ2。並且，提供一第二殼體20(S2〇3)，第二殼體具有 一底板210及相對之二側板22〇，二侧板22〇分別設置於底板 210之二側邊’使底板210及二侧板220之間形成另一容置空 間230。然後，彎折第二殼體2〇之二側板22〇，使二側板22〇 分別與底板210之間形成一角度小於90度的初始夾角0 i(S204) ’例如角度為88度之初始夾角θ 1。 請配合「第12圖」，於第一殼體1〇之二側壁12〇分別與 承载板110之間形成一預成形夾角02，以及第二殼體之二側 板分別與底板之間形成一初始夾角心後，將第二殼體2〇置入 於第一殼體10之容置空間13〇内(S2〇5)，使第二殼體2〇於容 置空間130内貼合於第一殼體1〇。之後，可選擇性的提供複 數個固疋件30〇鉚釘、螺絲等），並以複數個固定件3〇分別 牙设於過第二殼體20之二侧板220，並固定於第一殼體1〇之 一側壁120 _L(S206) ’使第二殼體2〇穩固地結合於第一殼體 10上(如「第13圖」所示 。月參閱第14圖」和「第15圖」，在機箱結構之預成形 步驟結束後’由於第-殼體1G之二健12G分別與承載板ιι〇 之間具有-預成形夾角θ2，且第二殼體2〇之二側板22〇分別 與底板210之間具有一初始夾角θ!。因此，當置入一物件恥 ，第二殼體2G之容置_ 2料，第二殼體2()之二側板22〇 受到物件4G的推擠而朝向第—殼體1()的方向位移，一併的帶 動第-殼體K)之二側壁㈣移動。此時，二側板22〇及二側 201134354 壁120分別於二側板220連接於底板210之一端以及二側壁 120連接於承載板11〇之一端，產生朝向底板21〇及承載板11〇 之中心方向的擠壓力道，使底板21〇及承載板11〇同時朝物件 40之方向產生彎折，進而在機箱結構上構成一曲面5〇。 同樣地，機相結構可精由此一曲面5〇所具有的表面張 力，克服物件於弟二殼體20及第一殼體1〇上所產生的下壓 力。因此，可避免機箱結構產生殼體下沉，所導致二機箱結構 # 之間容易因相互干涉、碰撞而損毀。 本發明所揭露之機箱結構，於第二殼體之二側板及底板之 間設置初始夾角，使第二殼體固定於第一殼體後，於第一殼體 内構成一曲面；或是同時於第一殼體之二側壁及承载板之間設 置預成形夾角，使機箱結構在配置物件後，形成另一曲面。機 箱結構係可藉由曲面所具有之表面張力，克服物件於機箱結構 内所產生的下壓力。因此，可防止機箱結構之殼體產生下沉而 鲁 Μ於機箱結構表面’飾避免機箱㈣設置於機架時，於機 架上與其他機箱結構產生相互干涉、碰撞的情形發生。 雖然本發明之實_揭露如上所述，錢翻以限定本發 明，任何熟習_技藝者’林麟本發明之精神和範圍内， 舉凡依本發明申請範圍所述之形狀、構造、特徵及精神當可做 些許之變更，因此本發明之專利保護範圍須視本說明書所附之 申請專利範圍所界定者為準。 【圖式簡單說明】 ^ 11 201134354 P圖為本發明第-實施例之預成形方法之流程示意圖； 第2圖為本發明第一實施例之立體分解示意圖； 第3圖為本發明第__實施例之分解剖面示意圖； 第4圖為本發明第—實施例之結合剖面示意圖； 第5圖為本發日㈣—實施例之組合剖面示意圖； 第6圖為本發明第—實施例之立體組合示意圖； 第7圖和第8 51為本發明第—實施例之使用狀態示意圖； 第9圖為本_第二實施例之賊形方法之流程示意圖； 第10圖為本發明第二實施例之立體分解示意圖； 弟π圖為本發明第二實施例之分解刮面示意圖； 第12圖為本發明第二實施例之結合剖面示意圖； 第13圖為本發明第二實施例之組合剖面示意圖；以及 第14圖和第15圖為本發明第二實施例之使用狀態示意圖； 【主要元件符號說明】 川 第一殼體 110 承载板 120 側壁 130 容置空間 20 第二殼體 210 底板 211 曲面 220 侧板 12 201134354 230 容置空間 30 固定件 40 物件 50 曲面 θχ 初始夾角 θ2 預成形夾角Please refer to the "FIG. 9" to "Nth figure". The pre-forming method of the chassis structure disclosed in the second embodiment of the present invention first provides a first housing 10 (S201). A receiving plate 11 and two opposite side walls 120 are disposed on the two sides of the carrying plate, so that an accommodating space 13 is formed between the carrying plate 110 and the two side walls 120. Then, the two side walls 120 of the first casing 10 are bent to form a pre-formed angle 02 (S2〇2) between the two side walls 12 and the carrier plate at an angle of less than 90 degrees, for example, a pre-soil S having an angle of 89 degrees. 201134354 Shaped angle Θ 2. A second housing 20 (S2〇3) is provided. The second housing has a bottom plate 210 and two opposite side plates 22, and the two side plates 22 are respectively disposed on two sides of the bottom plate 210. Another accommodating space 230 is formed between the two side plates 220. Then, the two side plates 22 of the second casing 2 are bent, so that the two side plates 22 respectively form an initial angle of less than 90 degrees with the bottom plate 210 (S204), for example, an initial angle of 88 degrees. θ 1. Please cooperate with "Fig. 12" to form a pre-formed angle 02 between the side walls 12 of the first casing 1 and the carrier plate 110, and an initial formation between the two side plates of the second casing and the bottom plate respectively. The second housing 2 is placed in the accommodating space 13 第一 of the first housing 10 (S2 〇 5), and the second housing 2 is affixed to the first space in the accommodating space 130. The housing is 1 〇. After that, a plurality of fixing members 30 rivets, screws, and the like are selectively provided, and the plurality of fixing members 3 are respectively disposed on the two side plates 220 of the second casing 20 and fixed to the first shell. One side wall 120 _L (S206) ' of the body 1 使 makes the second housing 2 〇 firmly coupled to the first housing 10 (as shown in Fig. 13). See Figure 14 and Figure 15 for the month. After the pre-forming step of the chassis structure is finished, 'Because the first housing 1G two Jian 12G and the carrier plate ιι respectively have a pre-formed angle θ2, and the second housing 2 〇 two side plates 22 〇 respectively There is an initial angle θ! with the bottom plate 210. Therefore, when an object is placed shame, the second casing 2G is accommodated, and the two side plates 22 of the second casing 2 are pushed by the object 4G. The squeezing is displaced toward the first casing 1 (), and the two side walls (four) of the first casing K) are moved together. At this time, the two side panels 22 and the two side 201134354 walls 120 are respectively connected to one end of the bottom plate 210 at the two side plates 220 and the two side walls 120 are connected to one end of the carrier plate 11 to generate a center direction toward the bottom plate 21 and the carrier plate 11 The pressing force causes the bottom plate 21 and the carrier plate 11 to be bent in the direction of the object 40, thereby forming a curved surface on the chassis structure. Similarly, the machine phase structure can refine the surface tension of the curved surface of the curved surface to overcome the downward pressure generated by the object on the second housing 20 and the first housing 1 . Therefore, the housing structure can be prevented from sinking, and the two chassis structures are easily damaged by mutual interference and collision. The chassis structure disclosed in the present invention has an initial angle between the two side plates and the bottom plate of the second casing, so that the second casing is fixed to the first casing, and a curved surface is formed in the first casing; A pre-formed angle is disposed between the two side walls of the first casing and the carrier plate, so that the chassis structure forms another curved surface after the object is disposed. The chassis structure overcomes the downforce generated by the object in the chassis structure by the surface tension of the curved surface. Therefore, the housing of the chassis structure can be prevented from sinking and the surface of the chassis structure can be prevented from colliding and colliding with other chassis structures when the chassis (4) is placed in the rack. Although the present invention has been described above, it is intended to limit the scope of the invention, and the scope, structure, features and spirit of the invention are within the spirit and scope of the invention. The scope of patent protection of the present invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 is a schematic flow chart of a pre-forming method according to a first embodiment of the present invention; FIG. 2 is a perspective exploded view of a first embodiment of the present invention; 4 is a schematic cross-sectional view of a first embodiment of the present invention; FIG. 5 is a schematic cross-sectional view of a first embodiment of the present invention; 7 is a schematic diagram showing the state of use of the first embodiment of the present invention; FIG. 9 is a schematic flow chart of the thief-shaped method of the second embodiment; FIG. 10 is a second embodiment of the present invention 3 is a schematic exploded view of a second embodiment of the present invention; FIG. 12 is a schematic cross-sectional view of a second embodiment of the present invention; and FIG. 13 is a schematic cross-sectional view of a second embodiment of the present invention 14 and 15 are schematic views showing the state of use of the second embodiment of the present invention; [Description of main components] The first housing 110 of the carrier 110 The side wall 130 The housing space 20 The second housing 210 Plate 211 side surface 220 12201134354230 accommodating space object 40 surface 30 fixture 50 θχ initial angle θ2 preformed angle