M254599 玖、創作說明： 【技術領域】 更并寸別有關於一種新型探針之 里，則與接觸，並可有效節省探針 本創作係有關於一種新型測試用探針 機械結構，其使用於電子電路之電氣特性 之組裝步驟。 【先前技術】 目則採針已廣泛顧於各種測試領域，如印刷電路板測試 職裝測試、通訊產品及液晶面板測辦，皆須探針做為測試媒介。、除此 之外’現階段探針亦逐漸朝精細之電子元件發展，主要是因為探 格愈來愈精細且呈有導電性、祇+ 、、,、、 八有w生低祕的優點，因此將賦予探針高頻訊號傳 二功此’/、可做為手鱗鱗通訊產品之收發天線及各類電子產品充電 器、連接器之銜接接點。未來探針將不再只扮演測試功能的角色，亦將: 電子兀件的領域上佔領不可或缺之位置。 請參照第1圖揭示一習用之探針結構，其主要包含有-金屬管11〇、一 _120及-彈細。該金屬f職有—中空滑細，且該針糊之一 ^係為-_碩15() ’另_端則與彈f 13()連接。該金屬管⑽前端有一縮口 部份I使得該針頭12_靖細只能在中空滑槽⑽内自由伸縮運動 而不曰弹出於中空滑槽14叫。—般習知之探針製造流程皆是各部份分開製 作兀成後’再做組裝部份。亦即，車床、cnc等加工機諸出金屬管、 針^彈簧等組件後。經由人為或自動化機台操作，各組件依其相對位置 并衣兀成&針後’再细特殊機台做縮口部份以完成探針最後之形狀，如 此使仟針頭及彈黃不會彈出套管外。由此可知，傳統探針之製作大致可分 為一们序’其—為製作探針各組件部份，其二是人為或自動化機台依各 組件相對位置行組裝程序，最後再利關器行縮口部份。因此，製作之程 M254599 序若能減少，將可大大降低人力、時間及生產成本。 另外’電子產品不斷朝輕薄短小的趨勢發展，電路板線路間距窄且零 件肢和小，因此測試用探針尺寸亦須愈做愈小才行。然而，由上述得知， 採針製作分為三個程序，由於探針尺寸變小，因此第一個程序，製作各零 件部份將更為_。第二個程序，將更耗費大量之人力及時間成本在拼裝 部份上。最後-道程序，則須再製作更小之機台以人為方式行縮口部份， 其所耗費人力及時間成本之大亦是無庸置疑的。 有鑑於此’有需要提供—酬化製作程序之探針結構及其製造方法， 以減少傳統上賴使料道料組裝方式，且同時魏滿足職時之機械 及電氣特性《’最終於量麟崎低人力、時間及生產成本並克服生產 【創作内容】 、，本創作之主要目的在於提供—種探針結構，其可減少傳統上必須使用 多這零件組裝方式’且同_能滿足測試時之機械及電氣特性需求。 王要 π卿提供—簡型之探針結構，該探針㈣ 包含-接觸物單^鄉魏條物軸觸裝伽 接，且具同心圓之雙筒身；一終端針頭單元，位於該接觸端針頭單元之木 =秦測物做接觸或用以量測接觸裝置做連接，且具溝槽之筒身 早’早兀，位於接觸端針頭單元及終端針頭單元内 探針臟無心认物酬&_侧。、讀糊 身，嫩糊心®之雙筒 門/、二°空部份將置入—彈性物質，而其内筒結構盘外η-構中 間相隔之中空部份將提供探針之另—終端針頭單元之筒編之用 M254599 根據本創作之再—特徵，該内筒結構與外筒結構中間相㈣1 具有一勾狀物結構，此勾狀物結構將使得 73 ^ , 、、冬鳊針碩早元插入 …、 月動終止之用途而不會使得探針之另-終端針頭單元M254599 创作, Creation Description: [Technical Field] In addition, there is a new type of probe, which is in contact with it, and can effectively save the probe. This creation is about a new type of test probe mechanical structure, which is used in Assembly steps for electrical characteristics of electronic circuits. [Previous Technology] The needle has been widely used in various testing fields, such as printed circuit board testing, professional equipment testing, communication products and LCD panel testing, all of which require probes as the test medium. In addition, at the current stage, probes are gradually moving towards fine electronic components, mainly because the probes are becoming more and more refined and showing conductivity, only + ,,,,, and 8 have the advantages of low health, Therefore, the probe will be given a high-frequency signal to transmit the second job. It can be used as the connection and reception antenna of hand-scale communication products and various electronic product chargers and connectors. In the future, the probe will not only play the role of test function, but also: occupy an indispensable position in the field of electronic components. Please refer to FIG. 1 to reveal a conventional probe structure, which mainly includes -metal tube 110, -120 and -elastic. The metal f has a function of being hollow and thin, and one of the needle pastes is -_ Shuo 15 () 'and the other end is connected to the f 13 (). The front end of the metal pipe 有 一 has a constriction part I so that the needle 12_jing can only move freely in the hollow chute 伸缩 instead of popping out of the hollow chute 14. —The conventional probe manufacturing process is that each part is separately manufactured and then assembled. That is, the lathe, cnc and other processing machines come out of metal pipes, needles, springs and other components. Through manual or automatic machine operation, each component is formed according to its relative position & after the needle 'is thinned and the special machine is made into a necked part to complete the final shape of the probe, so that the needle and the yellow will not Eject the sleeve. It can be seen that the production of traditional probes can be roughly divided into a sequence of 'its-for the production of each component of the probe, the second is the artificial or automated machine assembly process according to the relative position of each component, and finally the clearance Line necking part. Therefore, if the production process M254599 can be reduced, it will greatly reduce labor, time and production costs. In addition, electronic products continue to be trending toward thinner, lighter, and shorter ones. Circuit board wiring is narrow and parts are small and small. Therefore, the size of test probes must be smaller and smaller. However, it is known from the above that the production of needle collection is divided into three procedures. As the probe size becomes smaller, the first procedure will make each part more _. The second procedure will consume a lot of labor and time costs on the assembly part. In the final procedure, it is necessary to make a smaller machine to shrink the part artificially, and the labor and time costs it consumes are unquestionable. In view of this, there is a need to provide a probe structure and a manufacturing method for remunerative production procedures, in order to reduce the traditional way of relying on the material assembly of the material, and at the same time, Wei's mechanical and electrical characteristics at the same time "'Finally in the amount of Lin Low labor, time, and production costs and overcome production [Creation content] The main purpose of this creation is to provide a probe structure that can reduce the number of traditional assembly methods that must be used. Mechanical and electrical characteristics. Wang Yao π Qing provided-a simple probe structure, the probe ㈣ contains-contact object single ^ Xiang Wei strip object axis contact Gamma connection, and has a concentric circular barrel; a terminal needle unit, located in the contact The wood of the end needle unit = Qin measuring objects for contact or for measuring the contact device for connection, and the grooved barrel is early. It is located in the contact end needle unit and the terminal needle unit. & _side. 2. Read the body, the double-cylinder door of Tenderness® /, the two-degree hollow part will be placed in-elastic material, and the hollow part of the inner tube structure outside the η-structure middle will provide a probe- The use of the barrel of the terminal needle unit M254599 According to another feature of this creation, the inner barrel structure and the outer barrel structure have a hook structure in the middle. This hook structure will make the 73, 、, and winter needles Master Early Insertion ..., the end of the moon movement without making the probe another-terminal needle unit
之筒身脫落或彈跳出來。 早7L 根據本創作之又-特徵，該探針之另一 口…、 構之筒身，其溝槽狀結構主 、而5、早兀為具有溝槽狀結 稱主要目的4供更多自由度之運動，亦即直溝样 狀結構將比無溝槽結構之圓肢絲性及彈性，使得能夠承受稍微施加力㈢ 量之微卿’樣_獅从有觸酬之峨針頭單元， 以利於組裝。 、 、根據本創作之之又—特徵’該具有溝槽狀之筒身，在溝槽筒身終點部 份具有-圓弧狀之突出物’此圓弧狀之細使得探針終端針頭單元插入 接觸端針頭單S之後’將會與接觸端針頭單S之勾狀物結構因互相契合， 終致不會脫落或彈跳離開接觸端針頭單元。 因此’根據本新型内容之測試與接觸用之新型探針之製造步驟予以簡 化’以降低人力及_及生錢本。糾，提供_鑄造方式之製程方法， 便可衣4出更為複雜之形狀，以因應各種產品之需求，且鑄模材料亦可回 收再利用知楝針之製造方式更具經濟上之效益及環保概念並非一 般製造方式可予以比擬的。 為了讓本新型創作之上述和其他目的、特徵、和優點能更明顯，下文 知·舉本創作較佳貫施例，並配合所附圖示，做詳細說明如下。 【實施方式】 現明苓考第2圖，其顯示根據本創作之測試或接觸用之新型探針結構 M254599 抓針結構2〇〇包含一接觸端針頭單元別，一終端針頭單元220， 及一彈性單元230。圖示24〇為筒狀結構細之右側視圖且圖示25〇為筒狀 結構200之左側視圖。 如乐2圖所不’該探針結構2〇0係利用鑄造方式製造而成，分別在同 一個砂模上輯賴咖罐，蝴舰嶋地接觸端針 頭單元210，終端針頭單元220，及彈性單元23〇。 、現請參考第3圖，其為顯示本創作之第2圖之接觸端針頭單元210，用 以更清楚說明接觸端針頭單元之細部分解。該接觸端針頭單元加係用於 吳待測物做接觸或用以量測接觸裝置做連接，該接觸端針頭單元加之主 要特徵係具有同心圓之雙筒身組成。該接觸端針頭單幻⑻更包含：一接 觸針頭3⑻，—内筒結構310，—外筒結_，及-勾狀物結構33〇。該 接觸端針頭單元21〇之該接觸針頭之形狀可為柱型、錐型、伞型、尖馨型、 鑛齒型及其他可變化之形狀。該接觸端針頭單元21〇是用禱造方式一體成 形’其内筒結細中空部份將置入該彈性單元23〇，而内筒結細之内 徑尺寸大小需經過精密計算使與該彈性私现能精確 彈性單元230放不進去，亦不會因彈 息亥 ^ 平汪早兀尺寸太小而鬆脫。另外，該内 ‘口㈣0與外同結構32〇中間相隔之中空部份將是提供探針之另一終端 U早το插人之肖。射’細邮之—岐_結構训與外筒結構 她之中空部份具有—獅轉，此_綠細將使得 單元插人時，具有岐之用途而不會使得探針之另-而針頭早减洛或彈跳出來。由於另—終端針頭單元插人之尺寸大小將 M254599 大於έ亥接觸端針頭單元 空部份，理論上是插不進去筒結構310與外筒結物中間相隔之令 疋插不進去的。但是該接觸端針 且本創作設計之形狀’將使_構更細及彈性，因：材綱’ 針頭單元插入時，導丄 口此，可提供終端 允够、丄^致“大内筒結構3W與外筒結構m 二二而—小之變形，在整體結構所能承受之應變上是可容二 Η不340、350與360分別為該接觸端針頭單元210在Α Α相。 之剖面圖，其中斜線部份為材質。 …秘與⑽ 現請參考第4圖，苴為$The barrel fell off or bounced out. As early as 7L, according to another feature of this creation, the other mouth of the probe ..., the body of the structure, its groove-like structure is the main, and 5, the early purpose is to have the groove-like knot, the main purpose is 4 for more freedom The movement, that is, the straight groove-like structure will be silker and more elastic than the round limb without the groove structure, so that it can withstand a slight amount of force. Assembly. According to another feature of this creation-the feature 'the grooved barrel body has a circular arc-shaped protrusion at the end of the grooved barrel body' This arc-shaped thinness allows the probe terminal needle unit to be inserted After the contact end needle sheet S 'will fit with the hook structure of the contact end needle sheet S, it will not fall off or bounce off the contact end needle unit. Therefore, 'manufacturing steps of the new probe for testing and contacting according to the novel content are simplified' in order to reduce manpower and money. Correction, providing the _ casting process method, can be made into more complex shapes to meet the needs of various products, and the mold material can be recycled and reused Zhizhi needle manufacturing method is more economical and environmentally friendly The concept is not comparable to general manufacturing methods. In order to make the above-mentioned and other objects, features, and advantages of this novel creation more apparent, the following is a detailed description of the preferred embodiment of this creation and the accompanying drawings, which are described in detail below. [Embodiment] The second figure of Mingling test is shown, which shows the new probe structure M254599 according to the author for testing or contact. The needle grasping structure 200 includes a contact tip unit, a terminal tip unit 220, and a Elastic unit 230. Figure 24 is a right side view of the cylindrical structure and Figure 25 is a left side view of the cylindrical structure 200. As shown in Figure 2, the probe structure 200 is manufactured by casting, and the Lai cai is assembled on the same sand mold, and the terminal needle unit 210, the terminal needle unit 220 are contacted by the butterfly ship, and Elastic unit 23〇. 3. Please refer to Figure 3, which shows the contact tip needle unit 210 of Figure 2 of this creation, for a more detailed explanation of the contact tip needle unit. The contact end needle unit is used for contacting the object to be measured or used to measure the contact device for connection. The main feature of the contact end needle unit is a double barrel with concentric circles. The contact tip single magic pin further includes: a contact pin 3⑻,-an inner tube structure 310,-an outer tube knot_, and-a hook structure 33. The shape of the contact needle of the contact-end needle unit 21 may be a column shape, a cone shape, an umbrella shape, a sharp-scent shape, a tine shape, and other variable shapes. The contact-end needle unit 21 is integrally formed by a prayer method. The hollow portion of the inner tube knot will be inserted into the elastic unit 23. The size of the inner diameter of the inner tube knot needs to be precisely calculated to match the elasticity. The private unit 230 can not be put in accurately, and it will not be loosened because of the small size of the Ping Wang Zao Wu. In addition, the hollow space between the inner ㈣0 and the outer same structure 32 will be another terminal for providing probes. She's fine mail-Qi_ structure training and the outer tube structure of her hollow part has-lion turn, this _ green fine will make the unit have the use of Qi without making the probe different-and the needle Drop early or bounce out. In addition, the size of the terminal needle unit inserted M254599 is larger than the empty part of the contact needle unit. In theory, it cannot be inserted into the tube structure 310 and the outer tube structure is separated, so it cannot be inserted. However, the shape of the contact pin and the original design will make the structure thinner and more flexible, because: Material Gang 'When the needle unit is inserted, the guide opening can provide a terminal allowance, and it can lead to the "large inner tube structure 3W and the outer tube structure m 22, the small deformation, the strain that the overall structure can withstand, can accommodate two 340, 350, and 360, respectively, the contact end needle unit 210 in the Α Α phase. , Where the oblique line is the material.… Secret and ⑽ Please refer to Figure 4, 苴 is $
更清楚說明終端針頭單=、=作之第2圖之終端針頭單元220 1 針頭單元加之相對ΓΓ=Γ該終端針頭單元220位於該接觸端 且具溝槽_ ζ ^ _胃咖__做連接， 押狀社構 端針頭單元22G包含：—終端針頭獨，一溝 七狀、—溝槽筒雜點部份42G，及 元220之該終端_ 470 430。轉端針頭單 及立#了~ 可為柱型、錐型、傘型、尖馨型、鑛齒型 用形狀以適應各種不同之量測裝置。該終端針頭單元-是Clearly explain the terminal needle list =, = Terminal needle unit 220 as shown in Figure 2 1 Needle unit plus relative ΓΓ = Γ The terminal needle unit 220 is located at the contact end and has a groove _ ζ ^ _ Weijia__ for connection The beak-shaped community-end needle unit 22G includes:-a terminal needle alone, a ditch-like shape,-a grooved part of the grooved tube 42G, and the terminal 220_470 430. Rotary needle tip and standing # 了 ~ It can be cylindrical, cone, umbrella, pointed, or tine type. It can be used to adapt to various measuring devices. The terminal needle unit-yes
用“方式—體成形，其溝槽狀結構之溝槽可為2個以上並不只限於 :剖成四個。溝槽狀結構主要目的是提供更 ： 承受稱祕力㈣小峨跑娜’使細 …里之…4 ’而能夠順利地插入具有雙筒身之探針之接 2針頭早π勝另外’該具有溝槽狀結構之筒身，在溝槽筒身终點 1⑽具有-突出物，此突出⑽之形狀可為圓弧狀、圓點狀、柱 狀寺形式。軸細物精㈣以細針頭單元· -10- M254599 之後，將會與該接觸端針頭單元加之勾狀物結構则尺寸大小不契八 而卡住，終致繼落或轉嶋觸物單元⑽。圖⑽输 端針頭單元220在D-D，之剖面圖，其中斜線部份為 根據本創作之測試或接觸用之新型探針結構之製作方式，瘦由一 次騎即可細數職小鑄件以上，鱗之材料可以選㈣青銅、普銅、 _及其他銅合金、獨鋼、各種碳鋼或是導難與基本素材之 =膠流體。故鑄造之製造成形過程相當簡單且可利用自動化設備來大量生 該接觸端針頭單元21〇，用以與待測物 接，且具同心圓之雜筒身。而…、 妾觸或用以置測接觸裝置做連 裝電路板、連接^接栉铺測物係可為印刷電路板、已插零件之實 單元之象。該終端針頭單以20，位於該接觸端針頭 槽之筒身。、二，待測物做接觸或用以量測接觸裝置做連接，且具溝 …而樣早70 230，位於接觸端針頭單元及終端針頭單元内用、 級衝測試時探針1缩及提供彈力 用Μ 導電性之非金翁料等。 雜可為具㈣性之金屬或具 該探針結構朋，含該接觸端針頭單^加，該終端 呑亥彈性物㈣、早凡220 ’及 物奴230’經由一次洗缚即可完成不必經由多次加 程中予以最佳之控制將獲得良好之機械性質，如耐震過 性等優良·。又鶴_ 村在爾之方向 抗磨耗、高導電™料尊金 M254599 除可般測簡接觸用途外，更可步考量 頻訊號上之阻抗佶。兮敁㈣ 牛％， 端針群元及終端_單元亦可以社鑽石膜 或立方氮化硼薄膜等超硬材料，以增加其耐磨性與硬度。 、 元結構之雜除了獅鑄造料分鑛端針頭單 ⑥m物性物體一體成形免除後續加工成型外，其優點還有： _人力及時嶋，因__驟只_簀_觸端針頭軍 凡麵終端針解元插人接觸骑群元柯切告成，並不需再製造 一機。行縮時驟，若將來_—自動化設備來完祕裝麵，則將可再 大大降低人力及時間成本。（2)增加經濟效益，因為各鑄特在製造過程中 有損壞’皆可進行回麟缸作，再加以利用。本創作提供-種具有高声 經濟上效益之探針製造方法。一般而言，鑄造用之模砂是-種既便宜^ 一再重禝使用且再生率相當高的一種鑄造材料，這將使得禱件的成本大為 降低，而在市場鎖售上更具競爭力。也就是說，鑄件讀冒口部份及廢件 部伤，亦可重新當回爐料，再次進行回收溶化的工作，如此將可節省在材 料上之浪費且更具有環保回收再利用之概念。 雖然本新型測試用探針已於較佳實施例揭示，然其並非用以限定本新 型探針結構，任何熟習此技藝者，在不脫離柄型探針結構之精神和範圍 内’當可作各種之更動與修改。例如，該接觸端針頭單元與該終端針頭單 元之形狀’該彈簣形式之變化等。因此本新龍針結構之保護範圍當視後 附之申請專利範圍所界定者為準。 -12- M254599 【圖式簡單說明】 第1圖為習用之測試用探針結構剖視圖。 第2圖為根據本新型探針之結構剖視圖。 第3圖為根據本新型探針之接觸端針頭單元結構剖視圖。 第4圖為根據本新型探針之終端針頭單元結構剖視圖。 【圖式元件符號說明】 110金屬管115縮口部份 120針頭130彈簧 140中空滑槽150探測頭 200筒狀結構210接觸端針頭單元 220終端針頭單元230彈性單元 240筒狀結構200之右側視圖 250筒狀結構200之左側視圖 300接觸端針頭單元310内筒結構 320外筒結構330勾狀物結構 340接觸端針頭單元300之剖面A-A’ 350接觸端針頭單元3⑻之剖面B-B’ 360接觸端針頭單元300之剖面C-C’ 400終端針頭單元410溝槽狀結構 420溝槽筒身終點部份430突出物 440終端針頭單元400之右侧視圖 M254599 460終端針頭單元400之剖面D-D’ 470終端針頭With the "method-body forming, the groove of the groove-like structure can be more than two and is not limited to: cut into four. The main purpose of the groove-like structure is to provide more: to withstand the secret force ㈣ 小 阿 跑 娜 '使Slim ... 4 ... and can be inserted smoothly with a 2-barreled probe. The 2-pin tip is π wins. In addition, the barrel-shaped structure has a protrusion at the end of the grooved body 1⑽. The shape of this protruding cymbal can be in the form of arc, polka dot, or columnar temple. The fine axis of the shaft is fine needle unit · -10- M254599, it will be combined with the contact end needle unit plus a hook structure Then the size is not the same and gets stuck, eventually falling or turning the contact unit. Figure ⑽ Cross-section view of the input needle unit 220 in DD, where the oblique line is used for testing or contacting according to this creation. The manufacturing method of the new probe structure allows you to count more than small castings with a single ride. The material of the scale can be selected from bronze, ordinary copper, _ and other copper alloys, independent steel, various carbon steels, or difficult and basic. Material = glue fluid. Therefore, the manufacturing process of casting is quite simple and profitable. Automated equipment is used to generate the contact tip unit 21 in large quantities, which is used to connect with the object to be measured, and has a concentric circular cylindrical body. And ..., touch or use the contact device to connect the circuit board and connect ^ The connection test object can be the image of a solid unit of a printed circuit board and inserted parts. The terminal needle is only 20, which is located in the barrel of the contact terminal needle slot. 2. The test object is used for contact or for The measuring contact device is connected and has a groove ... and the sample is as early as 70 230, which is located in the contact end needle unit and the terminal needle unit. The probe is retracted during the step test and the non-metallic material that provides Μ conductivity for elasticity, etc. . Miscellaneous can be a metal or a probe structure, including the contact tip needle, plus the terminal 弹性 弹性 elastic material 早, Zaofan 220 'and Wu slave 230' can be completed by a single wash Good mechanical properties, such as excellent shock resistance, etc., without having to be optimally controlled in multiple additions. And you _ Cun Zaier's direction is abrasion-resistant and highly conductive In addition to contact applications, you can also consider the impedance on the frequency signal.敁 ㈣ Niu%, the terminal pin group element and the terminal unit can also be super hard materials such as diamond film or cubic boron nitride film, to increase its wear resistance and hardness. In addition to the miscellaneous element structure, the lion casting material is divided into the ore end. Needle single ⑥m physical objects are integrally formed without the need for subsequent processing and molding. The advantages are: _Manpower and time 因, because __ 骤 只 _ 箦 _ Contact tip Needle Army Fan face terminal pin solution Insert person contact ride group Qunyuan Keche success There is no need to make another machine. If the time is shortened, if the automatic equipment is used to finish the surface in the future, it will greatly reduce the labor and time costs. (2) Increase economic benefits, because each casting is being manufactured Any damage in the process can be used in the Lin Lin cylinder and reused. This creation provides a probe manufacturing method with high sound and economic benefits. Generally speaking, the mold sand used for casting is-it is cheap ^ repeatedly A heavy casting material with a very high recycling rate will greatly reduce the cost of prayer pieces and be more competitive in the market. That is to say, if the part of the riser and the scrap of the casting is damaged, it can be used as the regrind again, and the work of recycling and melting can be performed again. This will save the waste of materials and have the concept of environmental protection recycling. Although the new type of testing probe has been disclosed in the preferred embodiment, it is not intended to limit the structure of the new type of probe. Anyone skilled in the art can do this without departing from the spirit and scope of the handle type probe structure. Various changes and modifications. For example, the shape of the contact-end needle unit and the terminal-end needle unit ' Therefore, the scope of protection of the new dragon needle structure shall be determined by the scope of the attached patent application. -12- M254599 [Brief description of the diagram] Figure 1 is a cross-sectional view of the structure of a conventional test probe. Figure 2 is a sectional view of the structure of the probe according to the present invention. Fig. 3 is a sectional view of the structure of a contact tip needle unit according to the novel probe. Figure 4 is a sectional view of the structure of the terminal needle unit of the probe according to the present invention. [Illustration of symbols of diagrammatic elements] 110 metal tube 115 necked part 120 needle 130 spring 140 hollow chute 150 probe 200 cylindrical structure 210 contact end needle unit 220 terminal needle unit 230 elastic unit 240 cylindrical structure 200 right side view 250 Left side view of 250 cylindrical structure 200 300 contact end needle unit 310 inner tube structure 320 outer tube structure 330 hook structure 340 contact end needle unit 300 section A-A '350 contact end needle unit 3⑻ section B-B' 360 contact end needle unit 300 section C-C '400 terminal needle unit 410 grooved structure 420 grooved body end portion 430 protrusion 440 terminal needle unit 400 right side view M254599 460 terminal needle unit 400 section D -D '470 terminal needle
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