1332382 九、發明說明： 【發明所屬之技術領域】 且特別是有關於一種 本發明是有關於一種固定機構， 電腦系統内的電路板導引固定機構。 【先前技術】 習知的電腦系統大都以螺絲或拇指螺絲將一電路板 (例如主機板）鎖固於一機殼内。當鎖固電路板時，需要將電 路板的螺孔一對準機殼内的相對位置後，才能以螺絲鎖 固。體積小的螺絲’-旦掉落地面後，就有遺失的疑慮。 對-般使用者而f，上述鎖固方式雖稱不上麻帛，但還是 具有改善的空間。 【發明内容】 因此本發明的目的就疋在提供一種無螺絲的電路板導 引固定機構》 根據本發明之上述目的，提出一種電腦系統中的電路 板導引固定機構。一第一板面具有複數個定位柱。該些定 位柱的位置與一欲固定之電路板的複數定位孔分別對齊。 一第二板面大致垂直於第一板面。一固定件樞接於第二板 面上，固定件轉動於一鎖固位置與一釋放位置之間，藉以 導引固定電路板於第一板面之該些定位柱上。當固定件轉 動至該鎖©位置時’ @定件之扣合部接合電路板之邊緣以 限制電路板於平行該第一板面方向的自由度，藉以使電路 5 1332382 板的該些疋位孔卡入於該些定位柱内而限制電路板於垂 直第一板面方向的自由度。 【實施方式】 如上所述，本發明提供—種電腦系統中的電路板導引 固疋機構，利用一樞接於機殼上之固定件，以導引並固定 一電路板於機殼上。以下將藉實施例來說明電路板導引固 定機構的細節。 請參照第1-3圖，其綠示依照本發明一實施例中導引 和固定一電路板的過程》在本實施例中，一電路板1〇4欲 固疋於電腦系統1 00之機殼中。機殼之板面1〇2具有複數 個疋位柱102a、102b。電路板1〇4具有複數個定位孔1〇4a、 104b，疋位孔i〇4a、l〇4b的位置分別與定位柱1〇2a、1〇2b 對應。固定件110以轉軸UOa樞接於板面1〇6(板面1〇6大 致垂直於板面102)上，用來導引電路板1〇4，使其定位孔 l〇4a、l〇4b與定位柱l〇2a、102b卡合以固定電路板1〇4。 在第1圖中，在固定件11〇處於釋放位置時（固定件11〇 的把手110c指向RELEASE)，先將電路板104之定位孔 l〇4a、l〇4b與板面102上的定位柱102a、1〇2b對齊，接著 向下移動電路板104,使定位孔104a、1〇4b與定位柱l〇2a、 i〇2b能相互卡合。為了方便對齊，固定件11〇亦可作為一 幫助對齊的元件。舉例，當電路板1〇4的邊緣1〇4c切齊固 定件110的導引面ll〇f時（參照圖中虛線），定位孔1〇乜、 104b與定位柱l〇2a、l〇2b的位置亦會對齊。 1332382 請參照第2圖與第4圖(第4圖為第2圖之上視圖)，繪 示電路板104(的定位孔1G4a、祕）㈣在定位柱1〇2&、 102b的狀態β此時，每—定位孔之第一開孔套在定位柱上。 例如’韻蘆形之定位孔104a之第-ρ耗1()5a套在定位柱 102a上《每一定位柱都包含底柱中柱以及頂椎。例如， 疋位柱102a包含底柱103a、令柱1〇扑以及頂椎i〇3c。在 本實施例中，疋位柱l〇2a(或每一定位柱）之頂椎1〇3c穿過 • 電路板ι〇4的定位孔i04a(或每一定位孔）。接著，電路板 104就靠在底柱i〇3a上。為了達到上述的目的，定位孔 l〇4a(或每一定位柱）的第一開孔1〇5a的孔徑需大於定位柱 l〇2a(或每一定位柱）之頂椎1〇3c。而且，定位孔1〇4&(或每 一疋位柱）的第一開孔105a的孔徑需小於定位柱1〇2&(或每 —定位柱）之底柱l〇3a的直徑。此外，中柱1〇3b的直徑小 於底柱103a的直徑或頂椎1〇3c之底面的直徑。接著，使 用者可以操作固定件110(例如施力於把手u〇c)，使其扣合 • 部110b接σ電路板1〇4的邊緣i〇4c，並沿方向120且平行 板面102推動電路板1〇4,使定位柱1〇2a(或每一定位柱） 之頂椎103c卡入疋位孔i〇4a(或每一定位柱）的第二開孔 105b 〇 請參照第3圖與第5圖（第5圖為第3圖之上視圖），繪 示電路板104(的定位孔104a、1〇4b)卡入定位柱1〇2&、1〇2b 的狀態。此時，固定件11〇處於鎖固的位置（把手n〇c指向 LOCK的位置）。為了達到上述的目的，定位孔ι〇4&(或每一 疋位孔）的第一開孔1 〇5a的孔徑需小於定位柱I 〇2a(或每一 7 1332382 定位柱）之頂椎103C之底面的直徑。在本實施例中，扣合 部110b為一 L形折板以接合電路板1〇4之邊緣l〇4c。當固 定件110處於鎖因位置時，扣合部u〇b同時限制電路板1〇4 向右和向上的自由度，且電路板1〇4之定位孔1〇4a(或每一 疋位孔）將卡入定位柱l〇2a(或每一定位柱）之頂椎1〇3c與 底柱I03a之間’電路板104就被鎖固了。 ‘使用者欲拆解電路板104時，首先將固定件轉 動回釋放位置，接著推動電路板104沿方向120的相反方 向滑動，直到電路板1〇4處於第2圖與第4圖的狀態時， 電路板104就能以垂直板面102的方向向上拉起。 請參照第6圖，其繪示本發明一實施例的一種固定件 的放大圖。如何限制固定件11〇於釋放位置與鎖固位置之 間，將於以下敘述。固定件110以軸孔u〇g樞接於板面ι〇6 上。固定件110具有一弧形的中空滑槽u〇d，用以套接於 限位柱110e(固定於板面1〇6)。當固定件11〇轉動時，中空 滑槽ii〇d相對於限位柱110e滑動，但限位柱u〇e只能於 中空滑槽110d内滑動。中空滑槽110d的兩端分別設有突 出的肋點，當限位柱11 〇e卡入中空滑槽u〇d的兩端時， 會受肋點的限制，而固定在中空滑槽11〇d的端點。而當限 位柱110e位於中空滑槽UOd的兩端端點時，固定件ιι〇 就分別位於釋放位置與鎖固位置。 由上述本發明實施例可知’應用本發明之電路板導引 固定機構’就可以應用固定件導引並固定一電路板，而無 需以螺絲鎖固方式固定電路板於電腦系統之機殼内。 8 1332382 雖然本發明已以一較佳實施例揭露如上，然其並非用 以限定本發明，任何熟習此技藝者，在不脫離本發明之精 神和範圍内，當可作各種之更動與潤飾，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】 為讓本發明之上述和其他目的、特徵、優點與實施例 能更明顯易懂，所附圖式之詳細說明如下： 第1 -3圖係繪示依照本發明一實施例中導引和固定一 電路板的過程； 第4圖係繪示第2圖之上視圖； 第5圖係繪示第3圖之上視圖；以及 第6圖係續·示本發明一實施例的一種固定件的放大圖。 【主要元件符號說明】 100 ： 電腦系統 105a ： 第一開孔 102 ： 板面 105b ： 第二開孔 102a ： 定位柱 106 ： 板面 102b ： 定位柱 110 : 固定件 103a ： 底柱 110a ： 轉軸 103b : 中柱 110b ： 扣合部 103c ： 頂椎 110d ： 中空滑槽 104 : 電路板 llOe ： 限位柱 104a ： 定位孔 llOf : 導引面 9 1332382 104b :定位孔 llOg :韩孔 104c :邊緣 120 :方向1332382 IX. Description of the invention: [Technical field to which the invention pertains] and particularly related to the invention The invention relates to a fixing mechanism, a circuit board guiding and fixing mechanism in a computer system. [Prior Art] Conventional computer systems mostly lock a circuit board (such as a motherboard) in a casing with screws or thumb screws. When the circuit board is locked, the screw holes of the circuit board must be aligned with the relative positions in the chassis before they can be locked with screws. The small size screw ─ ─ after falling to the ground, there are lost doubts. For the general user, f, although the above locking method is not paralyzed, it still has room for improvement. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a screwless circuit board guide fixing mechanism. According to the above object of the present invention, a circuit board guiding and fixing mechanism in a computer system is proposed. A first plate surface has a plurality of positioning posts. The positions of the positioning posts are aligned with the plurality of positioning holes of the board to be fixed. A second panel is substantially perpendicular to the first panel. A fixing member is pivotally connected to the second board surface, and the fixing member is rotated between a locking position and a releasing position for guiding the fixing circuit board to the positioning posts of the first board surface. When the fixing member is rotated to the position of the lock ©, the engaging portion of the @ fixing member engages the edge of the circuit board to limit the degree of freedom of the circuit board in the direction parallel to the first board surface, thereby causing the clamping of the circuit 5 1332382 The holes are inserted into the positioning posts to limit the degree of freedom of the circuit board in the direction perpendicular to the first plate surface. [Embodiment] As described above, the present invention provides a circuit board guiding and fixing mechanism in a computer system, which uses a fixing member pivotally connected to the casing to guide and fix a circuit board to the casing. The details of the board guiding and fixing mechanism will be described below by way of embodiments. Please refer to FIG. 1-3, which illustrates the process of guiding and fixing a circuit board according to an embodiment of the present invention. In this embodiment, a circuit board 1〇4 is intended to be fixed to the computer system 100. In the shell. The panel surface 1〇2 of the casing has a plurality of clamping posts 102a, 102b. The circuit board 1〇4 has a plurality of positioning holes 1〇4a and 104b, and the positions of the clamping holes i〇4a and 104b correspond to the positioning posts 1〇2a and 1〇2b, respectively. The fixing member 110 is pivotally connected to the board surface 1〇6 (the board surface 1〇6 is substantially perpendicular to the board surface 102) by the rotating shaft UOa for guiding the circuit board 1〇4 to make the positioning holes l〇4a, l〇4b Engaged with the positioning posts 10a, 102b to fix the circuit board 1〇4. In the first figure, when the fixing member 11 is in the releasing position (the handle 110c of the fixing member 11 is pointed to the RELEASE), the positioning holes l〇4a, l4b of the circuit board 104 and the positioning post on the board surface 102 are first used. 102a, 1〇2b are aligned, and then the circuit board 104 is moved downward so that the positioning holes 104a, 1〇4b and the positioning posts 10a, 2a, 2b can be engaged with each other. For ease of alignment, the fastener 11 can also serve as a component to aid alignment. For example, when the edge 1〇4c of the circuit board 1〇4 is aligned with the guiding surface 11〇f of the fixing member 110 (refer to the broken line in the drawing), the positioning holes 1〇乜, 104b and the positioning posts 10〇2a, l〇2b The location will also be aligned. 1332382 Please refer to FIG. 2 and FIG. 4 (FIG. 4 is a top view of FIG. 2), showing the state of the positioning column 1〇2&, 102b of the circuit board 104 (four) The first opening of each positioning hole is sleeved on the positioning post. For example, the θ-consuming 1() 5a of the positioning hole 104a of the rhyme-shaped shape is placed on the positioning post 102a. "Each positioning column includes a column in the bottom column and a vertex. For example, the clamp column 102a includes a bottom post 103a, a spine 1 and a top vertex i〇3c. In the present embodiment, the top vertex 1〇3c of the clamping post 10a (a or each positioning post) passes through the positioning hole i04a (or each positioning hole) of the circuit board ι4. Next, the circuit board 104 rests on the bottom post i〇3a. In order to achieve the above object, the aperture of the first opening 1〇5a of the positioning hole l〇4a (or each positioning post) needs to be larger than the top vertex 1〇3c of the positioning post 1〇2a (or each positioning post). Moreover, the aperture of the first opening 105a of the positioning hole 1〇4& (or each of the clamping posts) needs to be smaller than the diameter of the bottom post 10a3a of the positioning post 1〇2& (or each positioning post). Further, the diameter of the center pillar 1〇3b is smaller than the diameter of the bottom pillar 103a or the diameter of the bottom surface of the top vertex 1〇3c. Then, the user can operate the fixing member 110 (for example, apply the handle u〇c) so that the fastening portion 110b is connected to the edge i〇4c of the σ circuit board 1〇4 and pushes in the direction 120 and the parallel plate surface 102. The circuit board 1〇4 causes the top vertex 103c of the positioning post 1〇2a (or each positioning post) to be snapped into the second opening 105b of the clamping hole i〇4a (or each positioning post), please refer to FIG. 3 5 and FIG. 5 (the top view of FIG. 3), the state in which the positioning holes 104a and 1bb of the circuit board 104 are engaged with the positioning posts 1〇2&, 1〇2b is shown. At this time, the fixing member 11 is in the locked position (the handle n〇c points to the position of the LOCK). In order to achieve the above purpose, the aperture of the first opening 1 〇 5a of the positioning hole ι 4 & (or each clamping hole) needs to be smaller than the apical vertebra 103C of the positioning post I 〇 2a (or each 7 1332382 positioning post) The diameter of the bottom surface. In the present embodiment, the engaging portion 110b is an L-shaped flap to engage the edge l4c of the circuit board 1〇4. When the fixing member 110 is in the lock position, the fastening portion u〇b simultaneously limits the degrees of freedom of the circuit board 1〇4 to the right and upward, and the positioning holes 1〇4a (or each of the clamping holes) of the circuit board 1〇4 The circuit board 104 is locked between the top vertex 1〇3c of the positioning post 10〇2a (or each positioning post) and the bottom post I03a. When the user wants to disassemble the circuit board 104, the fixing member is first rotated back to the release position, and then the circuit board 104 is pushed to slide in the opposite direction of the direction 120 until the circuit board 1〇4 is in the state of FIGS. 2 and 4. The circuit board 104 can be pulled up in the direction of the vertical board surface 102. Referring to Figure 6, there is shown an enlarged view of a fixing member in accordance with an embodiment of the present invention. How to limit the fixing member 11 between the release position and the locking position will be described below. The fixing member 110 is pivotally connected to the board surface 〇6 by the shaft hole u〇g. The fixing member 110 has an arc-shaped hollow sliding slot u〇d for being sleeved on the limiting post 110e (fixed to the panel surface 1〇6). When the fixing member 11 turns, the hollow sliding groove ii 〇 d slides relative to the limiting post 110e, but the limiting post u 〇 e can only slide in the hollow sliding groove 110d. The two ends of the hollow chute 110d are respectively provided with protruding rib points. When the limit post 11 〇e is caught at both ends of the hollow chute u〇d, it is restricted by the rib point and fixed in the hollow chute 11〇 The endpoint of d. When the limiting post 110e is located at the end of the two ends of the hollow chute UOd, the fixing members ιι are located at the releasing position and the locking position, respectively. It can be seen from the above embodiments of the present invention that the circuit board guiding and fixing mechanism of the present invention can be used to guide and fix a circuit board by using a fixing member without fixing the circuit board in the casing of the computer system by screw locking. The present invention has been described in terms of a preferred embodiment, and is not intended to limit the invention, and various modifications and changes may be made 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 The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; The process of guiding and fixing a circuit board in the example; the fourth figure is a top view of the second figure; the fifth figure is a top view of the third figure; and the sixth figure is a continuation of the present invention. An enlarged view of an example of a fixture. [Main component symbol description] 100 : Computer system 105a : First opening 102 : Plate surface 105b : Second opening 102a : Positioning post 106 : Plate surface 102b : Positioning post 110 : Fixing piece 103a : Bottom column 110a : Rotating shaft 103b : Center column 110b : Fastening portion 103c : Top vertebra 110d : Hollow chute 104 : Circuit board 11Oe : Limit post 104a : Positioning hole 11Of : Guide surface 9 1332382 104b : Positioning hole 11Og : Han hole 104c : Edge 120 : direction