TWI758591B - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
TWI758591B
TWI758591B TW108108751A TW108108751A TWI758591B TW I758591 B TWI758591 B TW I758591B TW 108108751 A TW108108751 A TW 108108751A TW 108108751 A TW108108751 A TW 108108751A TW I758591 B TWI758591 B TW I758591B
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Taiwan
Prior art keywords
electrical connector
holding
slot
holding portion
width
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TW108108751A
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Chinese (zh)
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TW201939823A (en
Inventor
黃子耀
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英屬開曼群島商鴻騰精密科技股份有限公司
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/245—Contacts for co-operating by abutting resilient; resiliently-mounted by stamped-out resilient contact arm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/74—Devices having four or more poles, e.g. holders for compact fluorescent lamps

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

An electrical connector includes an insulative housing defining a plurality of terminal grooves extends through an upper surface and a lower surface of the housing, and the terminals received in the terminal grooves. The terminal includes a first retaining portion and a second retaining portion both fixed in the terminal groove, an elastic portion bending from an upper edge of the first retaining portion and beyond the upper surface of the insulative housing, and a soldering portion extending from a lower edge of the second retaining portion. The elastic portion includes an inclined portion and a contact portion extending from the inclined portion for contacting with a chip module. An elongated slot is defined at a curved joint of the elastic portion and the slot extends from the first retaining portion to the elastic portion. The elongated slot can be adjusted with its length, width and position according to actual needs, thereby reducing space between adjacent terminals for reducing impedance of the entire electrical connector.

Description

電連接器 electrical connector

本發明係關於一種電連接器，尤其涉及一種用於連接晶片模組的電連接器。 The present invention relates to an electrical connector, in particular to an electrical connector for connecting a chip module.

隨著大資料、雲計算、物聯網等概念的蓬勃發展，幾乎每個新產品都在談高速傳輸應用，各應用模組均朝向高速方向發展，以實現前面提到的高速傳輸應用，用來連接各個模組之間的輸入/輸出介面當然亦需要高速傳輸，而作為電腦、伺服器等核心部分的中央處理器則朝向更高速、接腳更多的方向發展，因而，對於用來連接中央處理器與主機板之間的電連接器也提出了越來越高的要求。在實際高頻測試中，電連接器接腳的上頭彈性抵接中央處理器的導電墊片，下頭焊接至電路板，上頭一般為傾斜彈性的懸臂樑，以提供撓性機械特性，保證與中央處理器的接觸。端子懸臂樑的特性阻抗一直為難解的問題，且端子數量眾多，對機械性能要求很高，需要在保證端子的機械性能的同時又最大程度的降低端子特性阻抗。 With the vigorous development of concepts such as big data, cloud computing, and the Internet of Things, almost every new product is talking about high-speed transmission applications, and each application module is developing towards high-speed to realize the high-speed transmission applications mentioned above. Of course, the input/output interface connecting each module also requires high-speed transmission, and the central processing unit, which is the core part of computers, servers, etc., is developing towards higher speed and more pins. The electrical connector between the processor and the motherboard also puts forward higher and higher requirements. In the actual high-frequency test, the upper end of the electrical connector pin elastically contacts the conductive pad of the central processing unit, the lower end is welded to the circuit board, and the upper end is generally an inclined elastic cantilever beam to provide flexible mechanical properties. Guaranteed contact with the CPU. The characteristic impedance of the terminal cantilever beam has always been a difficult problem to solve, and the number of terminals is very high, which requires high mechanical performance. It is necessary to reduce the terminal characteristic impedance to the greatest extent while ensuring the mechanical performance of the terminal.

是以，鑒於以上問題，實有必要提供一種新的技術方案，以解決上述問題。 Therefore, in view of the above problems, it is necessary to provide a new technical solution to solve the above problems.

本發明所要達成之目的係提供一種能有效提升阻抗性能的電連接器。 The object to be achieved by the present invention is to provide an electrical connector that can effectively improve impedance performance.

為解決上述技術問題，本發明提供一種電連接器，其包括具有複數端子槽的絕緣本體及收容在所述端子槽內的複數端子；所述絕緣本體具有上表面與下表面，所述端子槽貫穿所述上、下表面；所述端子包括固定在所述端子內的第一固持部與第二固持部、自第一固持部上緣彎折延伸出所述絕緣本體上表面的彈性部以及自第二固持部下緣延伸的焊接部，所述彈性部包括傾斜部和自所述傾斜部繼續延伸用來與所述晶片模組接觸的接觸部；所述彈性部與所述第一固持部在其弧形交界處設有一上下貫穿的長條形的狹槽，所述狹槽自第一固持部延伸至彈性部。 In order to solve the above technical problems, the present invention provides an electrical connector, which includes an insulating body with a plurality of terminal slots and a plurality of terminals accommodated in the terminal slots; the insulating body has an upper surface and a lower surface, and the terminal slot passing through the upper and lower surfaces; the terminal includes a first holding part and a second holding part fixed in the terminal, an elastic part bent from the upper edge of the first holding part and extending out of the upper surface of the insulating body; A welding portion extending from the lower edge of the second holding portion, the elastic portion includes an inclined portion and a contact portion extending from the inclined portion for contacting the chip module; the elastic portion and the first holding portion An elongated slot running through the upper and lower parts is provided at the arc-shaped junction, and the slot extends from the first holding part to the elastic part.

相對先前技術，本發明至少具有以下有益效果：通過在彈性部與第一固持部的弧形交界處設有一上下貫穿的長條形的狹槽，位於該端子應力集中區的狹槽可以根據實際需求調節其長度、寬度及位置，故所述端子可在保證機械性能的同時進一步地加寬其固持部及彈性部，在同等情況下，可相應減小相鄰端子之間的間距，從而降低整個電連接器的阻抗。 Compared with the prior art, the present invention has at least the following beneficial effects: by providing an elongated slot penetrating up and down at the arc-shaped junction of the elastic part and the first holding part, the slot located in the stress concentration area of the terminal can be adjusted according to the actual situation. The length, width and position of the terminal need to be adjusted, so the terminal can further widen its holding part and elastic part while ensuring the mechanical performance. The impedance of the entire electrical connector.

100:電連接器 100: Electrical connector

101:加強片 101: Enhancer

102:壓板 102: Platen

103:搖桿 103: Rocker

104:晶片模組 104: Chip module

105:絕緣本體 105: Insulation body

1051:上表面 1051: Upper surface

1052:下表面 1052: Lower Surface

106:電路板 106: circuit board

20:端子 20: Terminal

21:第一固持部 21: The first holding part

22:第二固持部 22: The second holding part

221:第一分支 221: First Branch

222:第二分支 222: Second Branch

23:彈性部 23: Elastic part

231:傾斜部 231: Inclined part

232:接觸部 232: Contact Department

2321:漸縮部 2321: Taper

2322:頭部 2322: Head

24:焊接部 24: Welding Department

25:狹槽 25: Slot

26:弧形交界處 26: Arc Junction

27:中間部 27: Middle part

28:倒刺 28: Barb

第一圖係本發明電連接器與晶片模組配合前的立體圖；第二圖係第一圖所示所示電連接器端子的立體圖；第三圖係第二圖所示電連接器端子另一角度的的立體圖；及第四圖係第一圖所示電連接器與晶片模組及電路板配合時的剖面示意圖。 The first figure is a perspective view of the electrical connector of the present invention before the chip module is mated; the second figure is a perspective view of the electrical connector terminal shown in the first figure; the third figure is the electrical connector terminal shown in the second figure. A perspective view from an angle; and the fourth figure is a schematic cross-sectional view of the electrical connector shown in the first figure when it is mated with the chip module and the circuit board.

以下，將結合第一圖至第四圖介紹本創作電連接器100之具體實施方式。本發明電連接器100用於連接中央處理器(CPU)等晶片模組104至電路板 106，所述電連接器100包括具有複數端子槽(未標號)的絕緣本體105及收容在所述端子槽內的複數端子20。所述電連接器100還包括框設於絕緣本體105週邊的加強片101、分別可轉動組裝於加強片101的相對兩側的壓板102及將壓板102固定至加強片101的搖桿103。 Hereinafter, specific implementations of the electrical connector 100 of the present invention will be described with reference to the first to fourth figures. The electrical connector 100 of the present invention is used for connecting a chip module 104 such as a central processing unit (CPU) to a circuit board 106. The electrical connector 100 includes an insulating body 105 having a plurality of terminal slots (not numbered) and a plurality of terminals 20 accommodated in the terminal slots. The electrical connector 100 further includes a reinforcing piece 101 framed around the insulating body 105 , a pressure plate 102 rotatably assembled on opposite sides of the reinforcing piece 101 , and a rocker 103 for fixing the pressure plate 102 to the reinforcing piece 101 .

請參閱第一圖至第四圖所示，所述絕緣本體105具有上表面1051與下表面1052，所述端子槽貫穿所述上、下表面1051、1052；所述端子20包括固定在所述端子20內的第一固持部21與第二固持部22、自第一固持部21上緣彎折延伸出所述絕緣本體105上表面1051的彈性部23以及自第二固持部22下緣延伸的焊接部24，所述彈性部23與所述第一固持部21在其弧形交界處26設有一上下貫穿的長條形的狹槽25，所述狹槽25自第一固持部21延伸至彈性部23。 Referring to FIGS. 1 to 4, the insulating body 105 has an upper surface 1051 and a lower surface 1052, and the terminal groove penetrates the upper and lower surfaces 1051 and 1052; The first holding portion 21 and the second holding portion 22 in the terminal 20 , the elastic portion 23 bent from the upper edge of the first holding portion 21 and extending out of the upper surface 1051 of the insulating body 105 and extending from the lower edge of the second holding portion 22 The welding part 24 of the elastic part 23 and the first holding part 21 are provided with an elongated slot 25 extending through the first holding part 21 at the arc-shaped junction 26 of the elastic part 23 and the first holding part 21 to the elastic part 23 .

請參閱第二圖至第三圖所示，所述彈性部23包括傾斜部231和自所述傾斜部231繼續延伸用來與所述晶片模組104接觸的接觸部232，所述接觸部232包括自所述傾斜部231向上傾斜延伸並呈逐漸縮小狀的漸縮部2321以及自漸縮部2321的一端弧形彎折延伸的頭部2322。由於所述端子20的寬度增加，故其厚度可適當減小，所述頭部2322的寬度亦可降到最小的極限狀態，故所述接觸部232的機械性能也得到大幅度提升，使得端子20在與所述晶片模組104連接的效果更佳且不易變形。 Referring to FIGS. 2 to 3 , the elastic portion 23 includes an inclined portion 231 and a contact portion 232 extending from the inclined portion 231 for contacting the chip module 104 . The contact portion 232 It includes a tapered portion 2321 that extends upwardly from the inclined portion 231 and is gradually reduced, and a head portion 2322 that is bent and extended in an arc shape from one end of the tapered portion 2321 . Since the width of the terminal 20 is increased, its thickness can be appropriately reduced, and the width of the head 2322 can also be reduced to a minimum limit state, so the mechanical properties of the contact portion 232 are also greatly improved, so that the terminal 20 is more effective in connecting with the chip module 104 and is not easily deformed.

在本實施方式中，所述狹槽25位於所述弧形交界處26中間，其位於弧形交界處26部分的寬度不超過所述弧形交界處26寬度的三分之一，其中所述弧形交界處與第一固持部21的寬度相同且均為0.45毫米，所述狹槽25位於弧形交界處的部分寬度為0.12毫米。所述狹槽25位於第一固持部21及傾斜部231部分的寬度大於位於弧形交界處26部分的寬度，所述狹槽25呈中間窄，兩頭寬的狗骨頭結構。其中所述狹槽25位於第一固持部21及傾斜部231部分的寬度為0.16毫米，所述狹槽25的總長度為0.75毫米。在實際實施過程中，所述狹槽25亦可選擇 傳統的長方形、橢圓形等形狀。所述狹槽25位於端子20應力集中區，可以根據實際需求調節其長度、寬度及位置，故所述端子20可在保證機械性能的同時進一步地加寬，在同等情況下，相鄰端子20之間的間距可相應減小，從而降低整個電連接器100的阻抗。 In this embodiment, the slot 25 is located in the middle of the arc-shaped junction 26, and the width of the part located at the arc-shaped junction 26 does not exceed one third of the width of the arc-shaped junction 26, wherein the The width of the arc-shaped junction is the same as that of the first holding portion 21 and both are 0.45 mm, and the width of the part of the slot 25 located at the arc-shaped junction is 0.12 mm. The width of the portion of the slot 25 at the first holding portion 21 and the inclined portion 231 is greater than that of the portion at the arc-shaped junction 26 , and the slot 25 is a dog-bone structure narrow in the middle and wide at both ends. The width of the portion of the slot 25 located at the first holding portion 21 and the inclined portion 231 is 0.16 mm, and the total length of the slot 25 is 0.75 mm. In the actual implementation process, the slot 25 can also be selected Traditional rectangular, oval and other shapes. The slot 25 is located in the stress concentration area of the terminal 20, and its length, width and position can be adjusted according to actual needs, so the terminal 20 can be further widened while ensuring mechanical properties. The spacing therebetween can be correspondingly reduced, thereby reducing the impedance of the entire electrical connector 100 .

請參閱第二圖至第三圖所示，所述第一固持部21與第二固持部22呈板狀結構且兩者由一中間部27作連接，且第一、第二固持部21、22呈彼此垂直設置。所述第一固持部21與彈性部23具有相同的寬度，且所述第一固持部21與第二固持部22的外側緣設有凹陷部及形成在凹陷部之間的固定倒刺28，所述第二固持部22的外側緣設有向外突出的固定倒刺28。所述第二固持部22下緣設有間隔設置的第一分支221及第二分支222，所述第一分支221連接至所述焊接部24，所述焊接部24呈水平狀，其可收容於所述端子槽內。所述第一固持部21與第二固持部22之間和所述第一分支221及第二分支222之間均形成有狹長的縫隙，通過調節兩縫隙的寬度亦可降低整個電連接器100的阻抗。 Please refer to FIGS. 2 to 3 , the first holding portion 21 and the second holding portion 22 are in a plate-like structure and are connected by an intermediate portion 27 , and the first and second holding portions 21 , 22 are arranged perpendicular to each other. The first holding portion 21 and the elastic portion 23 have the same width, and the outer edges of the first holding portion 21 and the second holding portion 22 are provided with concave portions and fixed barbs 28 formed between the concave portions. The outer edge of the second holding portion 22 is provided with fixed barbs 28 protruding outward. A first branch 221 and a second branch 222 are arranged on the lower edge of the second holding portion 22 at intervals. The first branch 221 is connected to the welding portion 24 . The welding portion 24 is horizontal and can accommodate in the terminal slot. A long and narrow gap is formed between the first holding portion 21 and the second holding portion 22 and between the first branch 221 and the second branch 222 , and the entire electrical connector 100 can be reduced by adjusting the width of the two gaps. impedance.

本發明通過在彈性部23與第一固持部21的弧形交界處設置狹槽25，使得狹槽25位於該端子20的應力集中區，並且可以根據實際需求調節該狹槽25的長度、寬度及位置，故所述端子20可在保證機械性能的同時進一步地加寬其第一固持部21及彈性部23，在同等情況下，可相應減小相鄰端子20之間的間距，從而降低整個電連接器的阻抗。 In the present invention, the slot 25 is provided at the arc-shaped junction of the elastic portion 23 and the first holding portion 21, so that the slot 25 is located in the stress concentration area of the terminal 20, and the length and width of the slot 25 can be adjusted according to actual needs. Therefore, the terminal 20 can further widen the first holding part 21 and the elastic part 23 while ensuring the mechanical performance. Under the same conditions, the distance between adjacent terminals 20 can be correspondingly reduced, thereby reducing the The impedance of the entire electrical connector.

本發明所述第一固持部21與第二固持部22及所述第一分支221及第二分支222均在保證彈性部23具有預定的機械性能的同時調節了整個端子20阻抗，使其達到預定阻抗值，如此達到實現高速信號傳輸的需求。 The first holding portion 21 and the second holding portion 22 and the first branch 221 and the second branch 222 in the present invention all adjust the impedance of the entire terminal 20 while ensuring that the elastic portion 23 has predetermined mechanical properties, so that the impedance of the entire terminal 20 reaches Predetermined impedance value, so as to achieve the requirement of high-speed signal transmission.

以上所述僅為本發明的部分實施方式，不是全部的實施方式，本領域普通技術人員通過閱讀本發明說明書而對本發明技術方案採取的任何等效的變化，均為本發明的權利要求所涵蓋。 The above descriptions are only part of the embodiments of the present invention, not all of the embodiments. Any equivalent changes to the technical solutions of the present invention taken by those of ordinary skill in the art by reading the description of the present invention are covered by the claims of the present invention. .

20:端子 20: Terminal

21:第一固持部 21: The first holding part

22:第二固持部 22: The second holding part

221:第一分支 221: First Branch

222:第二分支 222: Second Branch

23:彈性部 23: Elastic part

231:傾斜部 231: Inclined part

232:接觸部 232: Contact Department

2321:漸縮部 2321: Taper

2322:頭部 2322: Head

24:焊接部 24: Welding Department

25:狹槽 25: Slot

26:弧形交界處 26: Arc Junction

27:中間部 27: Middle part

28:倒刺 28: Barb

Claims (9)

一種電連接器，其包括：絕緣本體，係具有複數端子槽，所述絕緣本體具有上表面與下表面，所述端子槽貫穿所述上、下表面；複數端子，係收容在所述端子槽內，所述端子包括固定在所述端子槽內豎直延伸的第一固持部與第二固持部、自第一固持部上緣彎折延伸出所述絕緣本體上表面的彈性部以及自第二固持部下緣延伸的焊接部，所述彈性部包括由豎直部向上彎折延伸形成的傾斜部和自所述傾斜部繼續延伸用來與所述晶片模組接觸的接觸部，所述接觸部包括自所述傾斜部所在平面向上傾斜並且兩側均呈逐漸縮小狀的漸縮部以及自漸縮部的末端弧形彎折延伸的頭部；其中，所述彈性部與所述第一固持部在其弧形交界處設有一上下貫穿的長條形的狹槽，所述狹槽自第一固持部延伸至彈性部。 An electrical connector, comprising: an insulating body having a plurality of terminal slots, the insulating body having an upper surface and a lower surface, the terminal slot penetrating the upper and lower surfaces; a plurality of terminals being accommodated in the terminal slot Inside, the terminal includes a first holding portion and a second holding portion that are vertically extended in the terminal groove, an elastic portion that is bent from the upper edge of the first holding portion and extends out of the upper surface of the insulating body, and a second holding portion extending from the upper edge of the first holding portion. Two welding portions extending from the lower edges of the holding portions, the elastic portion includes an inclined portion formed by bending the vertical portion upward and a contact portion extending from the inclined portion for contacting with the wafer module. The part comprises a tapered part inclined upward from the plane where the inclined part is located and both sides are gradually reduced; The holding part is provided with an elongated slot running through the upper and lower parts at the arc-shaped junction, and the slot extends from the first holding part to the elastic part. 如請求項1所述之電連接器，其中所述第一固持部與第二固持部呈板狀結構且兩者由一中間部作連接，且第一、第二固持部呈彼此垂直設置。 The electrical connector according to claim 1, wherein the first holding portion and the second holding portion are plate-like structures and are connected by an intermediate portion, and the first and second holding portions are arranged perpendicular to each other. 如請求項1所述之電連接器，其中所述第一固持部與彈性部具有相同的寬度，且所述第一固持部與第二固持部的外側緣設有凹陷部及形成在凹陷部之間的固定倒刺，所述第二固持部的外側緣設有向外突出的固定倒刺。 The electrical connector of claim 1, wherein the first holding portion and the elastic portion have the same width, and the outer edges of the first holding portion and the second holding portion are provided with a recessed portion and are formed in the recessed portion The fixing barbs between the second holding parts are provided with fixing barbs protruding outwards on the outer edge of the second holding part. 如請求項1所述之電連接器，其中所述狹槽位於第一固持部及傾斜部部分的寬度大於位於弧形交界處部分的寬度，所述狹槽呈中間窄，兩頭寬的結構。 The electrical connector of claim 1, wherein the width of the portion of the slot located at the first holding portion and the inclined portion is greater than the width of the portion located at the arc-shaped junction, and the slot is narrow in the middle and wide at both ends. 如請求項1所述之電連接器，其中所述狹槽位於所述弧形交界處中間，其位於弧形交界處部分的寬度不超過所述弧形交界處寬度的三分之一。 The electrical connector of claim 1, wherein the slot is located in the middle of the arc-shaped junction, and the width of the portion of the slot located at the arc-shaped junction is no more than one third of the width of the arc-shaped junction. 如請求項1所述之電連接器，其中所述第二固持部下緣設有間隔設置的第一分支及第二分支，所述第一分支連接至所述焊接部，所 述焊接部呈水平狀，其可收容於所述端子槽內。 The electrical connector of claim 1, wherein the lower edge of the second holding portion is provided with a first branch and a second branch spaced apart, and the first branch is connected to the welding portion, so The welding portion is horizontal and can be accommodated in the terminal groove. 如請求項1所述之電連接器，其中所述弧形交界處與第一固持部的寬度相同且均為0.45毫米，所述狹槽位於弧形交界處的部分寬度為0.12毫米。 The electrical connector according to claim 1, wherein the width of the arc-shaped junction and the first holding portion is the same as 0.45 mm, and the width of the part of the slot located at the arc-shaped junction is 0.12 mm. 如請求項7所述之電連接器，其中所述狹槽位於第一固持部及傾斜部部分的寬度為0.16毫米，所述狹槽的總長度為0.75毫米。 The electrical connector of claim 7, wherein the width of the portion of the slot located at the first holding portion and the inclined portion is 0.16 mm, and the total length of the slot is 0.75 mm. 如請求項1所述之電連接器，其中所述電連接器包括框設於絕緣本體週邊的加強片、分別可轉動組裝於加強片的相對兩側的壓板及將壓板固定至加強片的搖桿。 The electrical connector as claimed in claim 1, wherein the electrical connector comprises a reinforcing sheet framed on the periphery of the insulating body, a pressing plate rotatably assembled on opposite sides of the reinforcing sheet, and a rocker for fixing the pressing plate to the reinforcing sheet rod.
TW108108751A 2018-03-16 2019-03-15 Electrical connector TWI758591B (en)

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