M327579 八、新型說明： 【新型所屬之技術領域】 摘作舰，咖，秦細⑽於絕緣座體 卜、、彖的屏敝殼體側邊所設之焊接部，使其延伸之枝接腳崎彎 之限位接腳’為可分別抵貼或穿過電路板，並與電路板上對應之 t屬接糊’咖椒位她定峨功效的結構。 【先前技術】 按’隨著電__縮小化、⑽與影像處理㈣化、抑 體大容量化及傳輸速度高速化的趨勢，陰極射線管顯示器已逐漸 被取代而献，從桌上缝視_大卿歸關攜帶型終端機之 顯不器’ 在均制液晶顯示器，朗域晶顯示器可達 度、低耗電性、高騎料要求，使其可望與人類生活緊密_ 起來，成為日常生活中不可或缺的一部份。 ° 其次，就以目前-般市社_介_規格，最 似接頭(也就是0—Sub、DB—15)來說，心： 碩其實是-種類比（An a ! 〇 g)的訊號傳輸方式，而必 轉換成類比訊號之後，才能夠呈現到液晶顯示器上，並於訊％ 換過程中會容易造成訊號的衰竭與失真，爾著硬體技術的= ，對於純數位的追求獨紗，於是料上又舰丨了 。 DVI(Dm “ inter/ac )規格’且以全触化的傳輸方式，即航號從顯*卡以數位、 方式达出之後’液晶顯示器也會直接以數位的方式來接收，小勺 夕、掉 5 M327579 了-次的轉換過程，自然在顯示的品f上有了莫大提昇。 另一方面，直到最近幾年來，具備了大螢幕尺寸之液晶顯示 盗的出現，則必然需要更大的頻寬，才能應付更高的解析产、更 新率及更多的色彩，此時，由於Dv!介面之頻寬有限^因而 娅到了發展的瓶頸，於是新規格的制定又由此展開，其中最為關 鍵的技術就是HDMI (Hi gh_De f i ...... = 1…"ace)規格:二對以 在顯不介_缺點純改良，不僅可直接傳送各式未縮的影像 資料，甚至亦可傳送聲音的資料，主要運用於機上盒、DM播 放器、數位電視、監視器及投影機等，都可以藉由此HDMI介 面互相傳輸㈣，錢影音#料在傳輸㈣候，都會以最高的解 析度呈現，且·最高可_ 5 G b P s，讓制者能以最好的 品質來觀賞。 此外，以HDM I介面目前的發展_，還可分成τ 〇 e A以及Type B兩種標準規格，其中Type a為u —M327579 VIII. New type description: [New technical field] It is a ship, coffee, and Qin (10) welded part of the side of the screen housing of the insulating seat body and the cymbal, so that the branch is extended. The limit pin of the Saki Bend is a structure that can be attached to or passed through the circuit board, and the corresponding t is the same as the circuit board. [Prior Art] According to the trend of 'shrinking with electricity__, reducing (10) and image processing (four), suppressing bulk and increasing transmission speed, cathode ray tube displays have been gradually replaced, and they are sewn from the table. _Daqing is the display device of the portable terminal. In the uniform LCD display, the reach of the Langyu crystal display, low power consumption, and high riding requirements make it hope to be close to human life. An integral part of everyday life. ° Secondly, the current general-purpose city _ _ _ specifications, most similar to the joint (that is, 0-Sub, DB-15), the heart: Shuo is actually - type ratio (An a ! 〇g) signal transmission The method, which must be converted into an analog signal, can be presented to the liquid crystal display, and it will easily cause signal depletion and distortion during the exchange of the signal. With the hardware technology, the pursuit of pure digital, So it was expected that the ship was smashed. DVI (Dm “inter/ac” specification” and the full-touch transmission method, that is, after the navigation number is displayed in digital form, the liquid crystal display will also receive it directly in digital mode. The conversion process of 5 M327579 has been greatly improved, and on the other hand, until the appearance of liquid crystal display pirates with large screen sizes in recent years, it is necessary to have a larger frequency. Wide, in order to cope with higher resolution production, update rate and more colors, at this time, due to the limited bandwidth of the Dv! interface, the Ya to the development bottleneck, so the development of new specifications, the most critical The technology is HDMI (Hi gh_De fi ...... = 1..."ace) Specifications: Two pairs of displays are not introduced _ defects purely improved, not only can directly transfer all kinds of unshrinked image data, and even The data for transmitting sounds is mainly used in set-top boxes, DM players, digital TVs, monitors and projectors, etc., and can be transmitted to each other through the HDMI interface (4), and the money and video sounds will be the highest in the transmission (four). Resolution is presented, and · most _ 5 G b P s, allowing the system to watch with the best quality. In addition, with the current development of the HDM I interface, it can be divided into two standard specifications: τ 〇e A and Type B, where Type a is u —
Pin’Type b為29—pin’而只有丁yμ b的 規格才能搭載聲音資料，另其Type A i9—的規 格’實際大小比U S B接翻微大上—些，但是比起％ a以及 D V 1介面來說，已經有了相當大的賴，體積小正意味著它可 以用在更多的電子產品上’相對也可崎低使用上之成本。 然而，現有HDM1介面之連接器通常是直接焊固於電路板 上’則在電子產品朝輕薄短小、微型化發展的趨勢大幅邁進，使 M327579 得其内部的空間同樣也受到壓縮及限制，因此電子零組件亦必須 配合改變才能容納於電子產品内部，以及在單位體積内容亦需容 納有更多的電子零組件，而沉板或板下類型的連接器具有達到縮 減佔用空間的效果，所以已被廣泛使用於小型通訊電子產品上， 如此’便可將連接器部份設置於電路板上所開設之插槽内，並延 . 伸至電路板下方位置處，藉此降低連接器位於電路板上方的高度 以充为利用此有限的空間；惟連接器係直接設置於電路板上開 _ 設之插槽内時，因為其整體長度較長，若僅藉由導電端子之焊接 口f514笔路板上接點相連接，將會造成連接器的重心位於遠離導電 端子之另側，故此種結構容易發生有歪斜、偏移或頭重腳輕的情 況，以致於在焊接過程中無法有效固定連接H，亦或產生有移位 或是空焊的可能性。 又，連接杰需考量彼此間因電磁效應所產生之訊號干擾問題 ，且在電路板上因具有其他的電子零組件，則於使用過程中會產 生電磁波流竄，造觸賴H干擾之雜，影響連接器訊號之傳 輸品質’所以在連接ϋ外通常都會罩覆屏蔽殼體，並於屏蔽殼體 底部設有複數焊接腳，以供與電路板之接點焊接後形成電性連接 ’進而可將不必要雜訊由焊獅導出至電路板±，觀防止連接 器受雜訊之干擾。 再者，般屏敝殼體大多為不銹鋼（stainless STELL)或黃銅材質所製成，由於不_材質或黃銅材質表 面所形成縝密細緻之氧化薄膜，係具有耐舰但對焊料不易焊固 7 M327579 之特性’且此錄—般端子長度較長 ==附著购Η㈣，使細馨= 和"連接减接與欲連接之插觀插置及拔取 =^Γ成嶋術_細_員壞= 心虎傳輸的穩定性。 即為從事此行業 是以，要如何解決上述習用之問題與缺失， 之相關廠商所秘研纽善之方向所在者。 【新型内容】 + 1人有鑑於上述之問題與缺失，乃搜集相關資料，經 :方捕及考里’輔職事於此行業之多年研發經驗，經由 不斷試作鄕改，始設計出此種電連接ϋ之新麵生者。 本創作之主要目的乃在_電賴^設置於電路板上時 可藉由屏肢體於焊接部之陶__方式插接板 t金屬接助祕位個，再配合定健腳表_著於金屬接點 的辅助疋位，形成具有限位與辅助定位雙重功效的結構，則可 细此結構有效固定電連雜，以及聽沉板或板下_之電連 亦 接益發生錢斜、偏移或輔喃的情況，且於焊接作業時， 可使其不會產生有樹减是空焊❾可能性。 … 6本創叙次要目的乃在_舰舰之焊接部為彻焊料使 讀接腳、限位接腳分別與電路板金屬接點焊固呈電性連接，並 藉由疋位接絲面所開設的集錫溝槽來使焊料在焊接作業時，可 堆積並冷凝於觸溝槽位置處，而使定位接腳、限位接=金屬 M327579 接點之間焊料的附著面積增加，如此 .^ 』防止有吃錫不足的現 生’並達到具有提高結合力、焊接強鱗_，财會造成 有因：度不足而使焊料繼或損壞之情況，進何提昇訊於 傳輸的穩定性。 【實施方式】 為達成上述目的及構造，本創作所採用之技術手段及其功效 ，兹繪圖就糊狀擁實補詳加·其步_魏如^俾 利完全瞭解。 請參閱第-、二、三圖所示，係分別為本創作之立體外觀圖 、較佳實施例之立體外觀圖以及側視示意圖，由圖中所示可清楚 看出’本創作之奴接器係於絕緣座m外緣包覆有屏蔽殼體2 ’其中絕緣座體1内部為設有至少—個或—個以上可供預設電連 t對接部插入之連接部i i，並於連接部丄i中穿設有複數導 、电端子1 1 1，而屏蔽殼體2則為金屬材料所製成，使其金屬材 料可為不義或黃崎f，且在屏蔽殼體2前_形成有與絕緣 座體1連接部1!相對應之對接槽2工，另於屏蔽殼體2兩相對 側邊分別設有焊接部2 2，再使各焊接部2 2分娜外延伸有定 接腳2 21，其定位接腳2 21表面為開設有至少一道或一道 M上之集錫溝槽2 2 2 ’以及相鄰於賴溝槽2 2 2的側邊往下 方折、弓有限位接腳2 2 3，則使定位接腳2 2 1、p艮位接腳2 2 3可分別抵貼或穿過電路板3,並與電路板3上對應之金屬接點 31焊固’進而形成電性導通之狀態。 .M327579 承上所述’本創作之電連接器於使帛時，該屏蔽殼體2於兩 相對側邊分舰有之焊接部2 2亦躲τ方延伸有祕接腳2 2 3 ’使其限位接腳2 2 3表面也可開設有至少—道或—道以上之 集錫溝槽2 2 2，並相鄰於集錫溝槽2 2 2_邊往外折彎有定 位接腳2 21 ;此外’焊接部2 2也可為—個或—個以上設置， 而焊接部2 2之定位接腳2 21與電路板3相對應之金屬接點3 1可為表_著技術（SMT)或祕細的方式形成電性連接 ’且焊接部2 2之限位接腳2 2 3與電路板3相對應之金屬接點 可為穿孔式（ThrQUgh HQle)的方式形成電性 連接；非僅止於此，财當電連接器、設·電職3上時，為可 藉由屏蔽殼體2之限位接腳223以穿孔的方式插接於電路板3 之金屬接點3 1⑽限位作用，再配合定位接腳2 2 i表面黏著 =购反3之金屬接點3 1上的辅助定位，形成具有限位與辅助 疋位雙重功效的結構，射糊此結财麵定轉電連接器， 以及避免f連接器發生妓斜、偏移或職贿的情況，且於進 订*干接作料，亦可使其*會產生有移位或是雜的可能性，故 舉凡可達成_效果之形式皆應受摘作所涵蓋，此種簡易修錦 及等效結構變化，均應同理包含於本創作之專利範圍内，合予陳 明。 又’屏敝殼體2之焊接部2 2為利轉料4使定位接腳2 2 1限位接腳2 2 3分別與電路板3上對應之金屬接點3工焊固 呈電性連接，並能由定位接腳2 2 i表面賴設的觸溝槽2 2 10 M327579Pin'Type b is 29-pin' and only D-yb can be equipped with sound data, and the Type A i9-specific' actual size is slightly larger than USB, but compared to % a and DV 1 In terms of the interface, there is already considerable reliance. The small size means that it can be used on more electronic products, which is relatively low cost. However, the connectors of the existing HDM1 interface are usually directly soldered to the circuit board, which is a trend toward the development of electronic products toward light, thin, and miniaturized, so that the internal space of the M327579 is also compressed and limited, so the electronics Components must also be changed to accommodate the inside of the electronic product, and more electronic components are required to be contained in the unit volume. The sinker or under-type connector has the effect of reducing the footprint, so it has been Widely used in small communication electronics, so that the connector can be placed in the slot of the circuit board and extended to the lower position of the board, thereby reducing the connector above the board. The height is used to make use of this limited space; however, the connector is directly placed in the slot of the circuit board, because the overall length is long, if only through the soldering port f514 of the conductive terminal Connecting the upper contacts will cause the center of gravity of the connector to be located away from the other side of the conductive terminals, so the structure is prone to skew, offset or head. Heavy-duty conditions, so that the connection H cannot be effectively fixed during the welding process, or there is a possibility of displacement or empty welding. In addition, connecting Jie needs to consider the signal interference caused by electromagnetic effects between each other, and because there are other electronic components on the circuit board, electromagnetic waves will flow during use, and the interference caused by H interference will be affected. The transmission quality of the connector signal is such that the shielded housing is usually covered outside the connection, and a plurality of soldering legs are provided at the bottom of the shielded housing for electrical connection with the solder joints of the circuit board. Unnecessary noise is exported from the welding lion to the board ± to prevent the connector from being disturbed by noise. In addition, most of the screen casings are made of stainless steel (stainless STELL) or brass. Due to the dense and fine oxide film formed on the surface of the material or brass, it is resistant to the ship but not easy to solder. 7 M327579's characteristics 'and this record - the length of the terminal is longer == attaching the purchase Η (four), so that the succinct = and " connection minus the connection and the connection to be inserted and extracted = ^ Γ 嶋 _ _ _ _ bad = Stability of heart-to-heart transmission. That is, to engage in this industry, how to solve the above-mentioned problems and shortcomings of the above-mentioned applications, the direction of the relevant manufacturers to study the direction of New Good. [New Content] + 1 person has collected relevant information in view of the above problems and shortcomings. After the years of R&D experience of Fangcun and Kauri's auxiliary services in this industry, he has designed this kind of tampering through continuous trial and error. The new connection to the electrician. The main purpose of this creation is that when the _ 赖 ^ ^ is placed on the circuit board, the screen body can be used in the soldering part of the __ way plug-in board t metal to help the secret position, and then with the fixed foot table _ The auxiliary clamping position of the metal joint forms a structure with the dual functions of limiting and auxiliary positioning, so that the structure can effectively fix the electrical interconnection, and the electric connection of the sinking board or the board is also affected. In the case of shifting or auxiliary sufficiency, and during the welding operation, it is possible to prevent the occurrence of a tree reduction or an empty weld. ... 6 The purpose of this creation is to electrically connect the read pin and the limit pin to the metal joint of the circuit board in the soldering part of the ship, and connect the wire by the clamp wire. The tin-collecting groove is provided to allow the solder to accumulate and condense at the position of the contact groove during the soldering operation, so that the adhesion area of the solder between the positioning pin and the limit connection metal M327579 is increased. ^ 』Preventing the lack of tin in the livelihood' and achieving the ability to improve the bonding strength, welding strong scales _, the financial cause caused by: insufficient degree to make the solder continue or damage, how to improve the stability of transmission. [Embodiment] In order to achieve the above purpose and structure, the technical means and its functions adopted by this creation, the drawing is mushy, and the details are added. The _Wei _ wei is fully understood. Please refer to the first, second and third figures, which are respectively a three-dimensional appearance of the creation, a three-dimensional appearance of the preferred embodiment and a side view, which can be clearly seen from the figure. The outer edge of the insulating seat m is covered with a shielding shell 2', wherein the inner portion of the insulating base 1 is provided with at least one or more connecting portions ii for inserting a predetermined electrical connection t butt joint, and is connected The part 丄i is provided with a plurality of conductive and electrical terminals 1 1 1 , and the shielding case 2 is made of a metal material, so that the metal material can be unintelligible or Huangsaki f, and formed in front of the shielding case 2 There is a mating groove 2 corresponding to the connecting portion 1 of the insulating base 1 , and a welded portion 2 2 is respectively disposed on opposite sides of the shielding case 2, and then the respective welded portions 2 2 are extended and fixed. The foot 2 21 has a surface of the positioning pin 2 21 which is provided with at least one or a set of tin-grooves 2 2 2 ' on the M and a side edge adjacent to the 2 2 2 of the trench 2 The foot 2 2 3 is such that the positioning pin 2 2 1 and the p-position pin 2 2 3 can respectively abut or pass through the circuit board 3 and correspond to the metal contacts 31 on the circuit board 3 The solder joint 'further forms a state of electrical conduction. .M327579 In the case of the electric connector of the present invention, the shielded housing 2 has a welded portion 2 on both opposite sides of the ship, and also has a secret pin 2 2 3 ' The surface of the limiting pin 2 2 3 may also be provided with at least a channel or a tin collecting groove 2 2 2 , and adjacent to the tin collecting groove 2 2 2_ to be bent outward with a positioning pin 2 21; In addition, the 'welding portion 2 2 may also be one or more than one, and the positioning pin 2 21 of the soldering portion 2 2 and the metal contact 3 1 corresponding to the circuit board 3 may be a table (SMT) Or a fine connection to form an electrical connection' and the metal contacts of the limiting pin 2 2 3 of the soldering portion 2 2 and the circuit board 3 can be electrically connected by means of a through-hole type (ThrQUgh HQle); However, in the case of the electrical connector, the electrical connector 3, the metal contact 3 1 (10) can be inserted into the circuit board 3 by the limiting pin 223 of the shielding case 2 in a perforated manner. Positioning, and then matching the positioning pin 2 2 i surface adhesion = the auxiliary positioning on the metal contact 3 1 of the purchase of the reverse 3, forming a structure with the dual effect of the limit and the auxiliary clamp, the paste of this noodles Turning the electrical connector, as well as avoiding the skew, offset or bribery of the f connector, and making the * dry feed, it can also cause the possibility of shifting or miscellaneous, so The form of the achievable effect shall be covered by the abstract. Such simple repairs and equivalent structural changes shall be included in the scope of the patent of this creation and shall be combined with Chen Ming. Moreover, the soldering portion 2 of the screen housing 2 is a transfer material 4, and the positioning pin 2 2 1 limiting pin 2 2 3 is electrically connected to the corresponding metal contact 3 on the circuit board 3 And can be placed by the positioning pin 2 2 i surface of the contact groove 2 2 10 M327579
2來使焊料4在焊接作業時，可堆積並冷凝於觸溝槽2 2 2位 置處’而使定位接腳2 21、限位接腳2 2 3與金屬接點3工之 間焊料4的附著面積增加，如此，便可防止有吃錫不足的現象產 生’亚達到具有提高結合力、焊接強度及抗剪強度之效用，由此 可知，當本創作之電越H欲直接無設電連接器之對接部做插 置及拔取之動作時’财會造成有因焊接強度不足而使桿料_ 洛或損壞之情況’進而可提昇訊麟輸的穩定性。 再者，上述絕緣座體i之連接部工丄可為R j 4 5、u s b 、IEEE 1 3 9 4、D~Sub、DVI或HDMI等介面型 式而本幻作主要以HDM j介面之使用為例，但於實際應用時 ，則並非是以HDM 1介蚊使料限，亦可將本_之電連接 器應用於任何具可進储拔動作的f輕ϋ型式上，社述料 說明為㈣本創作—種較佳之可行實施例朗此，惟該實施例 亚非用以蚊摘作之_請翻翻，凡其絲麟本創作所揭 不之技藝精神下所完狀均特化與修飾變更，均應包含於本創 作所涵蓋之專利範圍中。 著貫存在下列優點 故’本創作於使用時，與習用技術相較 接邦t目t於自用，本創作之_接器柯藉由屏蔽殼體2位於輝 ^22之限健腳223，以穿孔的方式插接於電路板3之全 屬接點3i内的限位作用，再配合定位帝 路板3之金屬接賴上的辅助定位，形成一 • M327579 雙重功效的結構，射有效固定電連接器，以及避免沉板或板下 θ型之電連接》、射有歪斜、偏移或職腳輕的情況，且於進行 焊接作業時，亦可使其不會產生有移位或是空焊的可能性。 其_人，係可藉由定位接腳2 2丄表面所開設的集錫溝槽2 2 2來使:^料4在焊接作業時，可堆積並冷凝於集 錫溝槽222位 置處’而使定位接腳2 2丄、限位接腳2 2 3與金屬接點31之 間详料4 _著面積增加，即可防止有吃錫不㈣現象產生，並 達到具有提高結合力、焊接雜及抗f齡之效用。 另方面，當本創作之電連接器欲直接與預設電連接器之對 接隋插置及拔取之動作時，财會造成有因焊接強度不足而使 焊料4剝落或損壞之情況，触可提昇纖傳輸賴定性。 上所_摘作之較佳實職已，自不能以此而 Γ 專利範圍，因此運用本創作說明書及圖式内容之所 專==狀等效結構變化’仍應同理包含於本創作所涵蓋之 寻利乾圍内，合予陳明。 目的’本創作上述之電連接器，為確實能達到其功效及 往要株^異之創作，實符合新型專利之申 明要件’歧法提出申請，盼 κ甲 人之辛苦創作，倘若*局私 准本案，以保障創作 人定當竭力配合，實感德便。 叫不’創作 M327579 【圖式簡單說明】 第一圖係為本創作之立體外觀圖。 第二圖係為本創作較佳實施例之立體外觀圖。 第三圖係為本創作較佳實施例之侧視示意圖。 【主要元件符號說明】 1、 絕緣座體 1 1、連接部 1 1 1、導電端子 2、 屏蔽殼體 2 1、對接槽 2 2 2、集錫溝槽 2 2、焊接部 2 2 3、限位接腳 2 2 1、定位接腳 3、 電路板 31、金屬接點 4、 焊料 132, so that the solder 4 can be stacked and condensed at the position of the contact groove 2 2 2 during the soldering operation, and the solder 4 between the positioning pin 2 21, the limiting pin 2 2 3 and the metal contact 3 The adhesion area is increased, so that the phenomenon of insufficient tin can be prevented from being produced, and the effect of improving the bonding strength, the welding strength and the shear strength can be prevented, and it can be seen that when the power of the creation is more than H, there is no electrical connection directly. When the docking part of the device is inserted and removed, the 'financial property may cause the rod to be loose or damaged due to insufficient welding strength', thereby improving the stability of the transmission. Furthermore, the connection portion of the insulating base i can be an interface type such as R j 4 5, usb, IEEE 1 3 9 4, D~Sub, DVI or HDMI, and the use of the HDM j interface is For example, in actual application, it is not limited to the HDM 1 mosquito, and the electric connector can be applied to any f-type that can be loaded and unloaded. (4) This creation is a better example of a feasible example. However, the embodiment of this article is not used for mosquitoes. Please turn over it, and it will be specialized in the spirit of the silky spirit. Modifications should be included in the scope of the patent covered by this creation. There are the following advantages: "This creation is used in comparison with the conventional technology when it is used. The _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The perforation method is inserted into the limit function of the entire contact 3i of the circuit board 3, and then cooperates with the auxiliary positioning on the metal connection of the positioning circuit board 3 to form a dual-function structure of M327579, and the radiation is effectively fixed. The connector, as well as avoiding the electrical connection of the θ-type under the sinking plate or the under-plate, the case of skewing, offset or light foot, and also can not be displaced or empty during the welding operation. The possibility of welding. The _ person can be made by positioning the tin-groove 2 2 2 of the surface of the pin 2 2 使 so that the material 4 can be deposited and condensed at the position of the tin-collecting groove 222 during the welding operation. When the positioning pin 2 2 丄, the limiting pin 2 2 3 and the metal contact 31 are increased in detail, the area can be prevented, and the phenomenon of preventing the occurrence of tin can not be prevented, and the bonding force and the welding are improved. And anti-f age effect. On the other hand, when the electrical connector of the present invention is to be directly inserted and removed from the preset electrical connector, the accounting causes the solder 4 to peel off or be damaged due to insufficient soldering strength, and the touch can be improved. Fiber transmission is reliant. The best practical position of the above is the scope of the patent, so the use of this creation manual and the content of the schema is equivalent to the == equivalent structural change' should still be included in this creation. In the search for the benefit of the dry, surrounded by Chen Ming. Purpose 'The above-mentioned electrical connector of this creation, in order to achieve its efficacy and the creation of the original plant, is in line with the application requirements of the new patent 'different law', and hopes that the hard work of κ甲人, if * 私This case is intended to protect the creators and make every effort to cooperate. Calling No's Creation M327579 [Simple Description of the Drawings] The first picture is a three-dimensional appearance of the creation. The second drawing is a three-dimensional appearance of the preferred embodiment of the present invention. The third drawing is a side view of a preferred embodiment of the present invention. [Main component symbol description] 1. Insulation base 1 1 , connection part 1 1 1 , conductive terminal 2, shield case 2 1 , butt groove 2 2 2, tin-groove 2 2, welded part 2 2 3, limit Bit pin 2 2 1 , positioning pin 3 , circuit board 31 , metal contact 4 , solder 13