WO2016188016A1 - 电连接器 - Google Patents

电连接器 Download PDF

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Publication number
WO2016188016A1
WO2016188016A1 PCT/CN2015/091899 CN2015091899W WO2016188016A1 WO 2016188016 A1 WO2016188016 A1 WO 2016188016A1 CN 2015091899 W CN2015091899 W CN 2015091899W WO 2016188016 A1 WO2016188016 A1 WO 2016188016A1
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WO
WIPO (PCT)
Prior art keywords
terminals
connecting portion
terminal
electrical connector
insulating body
Prior art date
Application number
PCT/CN2015/091899
Other languages
English (en)
French (fr)
Inventor
郑峰
张勇刚
陈亿昌
梁丽丽
Original Assignee
凡甲电子(苏州)有限公司
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Filing date
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Application filed by 凡甲电子(苏州)有限公司 filed Critical 凡甲电子(苏州)有限公司
Publication of WO2016188016A1 publication Critical patent/WO2016188016A1/zh

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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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • 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
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6473—Impedance matching
    • H01R13/6474—Impedance matching by variation of conductive properties, e.g. by dimension variations

Definitions

  • the invention relates to an electrical connector, in particular to an electrical connector with simple terminal preparation process, better solderet strength, small signal terminal impedance and good high-frequency signal transmission performance.
  • electrical connectors have been widely used as a connection device for transmitting digital signals, audio signals, and image signals.
  • the requirements for signal transmission speed, safety and volume of electrical connectors are gradually increasing, and thus more and more electrical connectors need to accommodate more terminals capable of transmitting high frequency signals.
  • the existing signal terminals are designed to be bent and formed by bending; the soldering feet of the design are long and easy to be deformed, and the process is required to be bent after the process, and the process is complicated; and the impedance of the existing signal terminals is high, causing return loss and insertion loss. Both are poor and it is difficult to achieve high signal transmission.
  • An object of the present invention is to provide an electrical connector having a simple terminal preparation process, a good solderet strength, a small signal terminal impedance, and a high-frequency signal transmission performance.
  • the present invention provides an electrical connector comprising: an insulative housing having a base, an abutting portion extending forward from the base, the abutting portion having a longitudinally extending butt groove and a relative a first wall and a second wall disposed on the lower side and the upper side of the docking groove, the second wall having a groove communicating with the docking groove and a first portion and a second portion formed by the groove spacing, the first The wall has a first expansion portion disposed opposite to the groove in the thickness direction and a second expansion portion disposed opposite to the first portion along the thickness direction of the insulation body; the base portion is provided with a terminal fixing groove; and the conductive terminals are respectively fixed to the first portion, the first portion a second set, a first set of terminals, a second set of terminals, a third set of terminals, and a fourth set of terminals on the second extension, each of the conductive terminals having a fixing portion fixed to the base, one end of the fixing portion a solder
  • the blank-formed chip terminals are a fourth group of terminals, and the solder balls of the fourth group of terminals are located on the front side of the solder legs of the first group of terminals.
  • the height of the fixing portion of the blank-formed chip terminal in the thickness direction of the insulating body is greater than the height of the contact portion of the conductive terminal and the solder fillet in the thickness direction of the insulating body.
  • the height of the fixing portion of the blank-formed chip terminal in the thickness direction of the insulating body is greater than the width of the fixing portion in the width direction of the insulating body; and the chip terminal for fixing the blank forming
  • the height of the terminal fixing groove in the thickness direction of the insulating body is larger than the width of the terminal fixing groove in the width direction of the insulating body.
  • the solder tail of the blank-formed chip terminal is formed by bending downwardly from the rear end of the fixing portion.
  • the blank-formed sheet-like terminal further includes a connecting portion that extends downward from the rear end of the fixing portion, and the soldering foot is formed to extend horizontally rearward from the end of the connecting portion.
  • At least a part of the first terminal, the second group terminal and the third group terminal are further provided with a connection portion connecting the fixing portion and the solder fillet, the connection portion
  • the width of at least a portion of the position in the width direction of the insulating body is greater than 2.1 times the thickness of the solder fillet.
  • the solder fillet extends horizontally rearward from the end of the connecting portion, and the fixing portion, the connecting portion and the solder fillet are arranged in a stepped manner.
  • the width of the connecting portion as a whole in the width direction of the insulating body is greater than the width of the solder fillet along the width direction of the insulating body; at least part of the position of the connecting portion is the whole of the connecting portion .
  • the connecting portion includes a first connecting portion that is bent back and forth from the rear end of the fixing portion, and a second connecting portion that extends horizontally rearward from the end of the first connecting portion. a third connecting portion that is bent downward from the end of the second connecting portion.
  • the width of the first connecting portion in the width direction of the insulating body is smaller than the width of the second connecting portion and the third connecting portion in the width direction of the insulating body.
  • At least a portion of the position of the connecting portion includes the second connecting portion and the third connecting portion.
  • part of the solder fillet is located in the same soldering plane, and another solder fillet extends perpendicular to the soldering plane.
  • the invention has the beneficial effects that at least part of the conductive terminals of the soldering foot in the front row of the electrical connector of the present invention are chip-shaped terminals formed by blanking, and the chip-shaped terminals formed by the blanking are along the longitudinal direction of the insulating body 1
  • the upper dimension can be reduced, the occupied space is small, and no bending is required, so that no bending space is reserved for the bending leg, so that the soldering leg of the soldering leg located in the rear row is reliably designed in front, so that the rear row of conductive terminals
  • the length is shortened, the signal transmission path is shortened, the current impedance is reduced, and the transmission effect of the high-frequency signal is improved.
  • the chip-shaped terminal formed by blanking does not need to be bent by the post-process to form the solder fillet, the process is simple, and the strength of the solder fillet is better, which can improve the yield and service life of the electrical connector.
  • Figure 1 is a perspective view of a first preferred embodiment of an electrical connector of the present invention.
  • Figure 2 is a perspective view of Figure 1 at another angle.
  • Figure 3 is an exploded view of the electrical connector of Figure 2.
  • FIG. 4 is a perspective view of the insulative housing of the electrical connector of FIG. 1.
  • Figure 5 is a perspective view of Figure 4 at another angle.
  • FIG. 6 is a schematic structural view of a fourth group of terminals in the electrical connector shown in FIG. 1.
  • Figure 7 is a schematic view showing the structure of the first group of terminals in the electrical connector shown in Figure 1.
  • Figure 8 is a perspective view of a second preferred embodiment of the electrical connector of the present invention.
  • Figure 9 is an exploded view of the electrical connector of Figure 8.
  • Figure 10 is a schematic view showing the structure of the fourth group of terminals of the electrical connector shown in Figure 9.
  • Figure 11 is a perspective view of a third preferred embodiment of the electrical connector of the present invention.
  • Figure 12 is an exploded view of the electrical connector of Figure 11;
  • Figure 13 is a schematic view showing the structure of the first group of terminals in the electrical connector shown in Figure 11.
  • Figure 14 is a schematic view showing the structure of a third group of terminals in the electrical connector shown in Figure 11.
  • the electrical connector 100 is specifically a line-side SATA connector and includes an insulative housing 1. A plurality of conductive terminals 2 fixed in the insulative housing 1.
  • the insulative housing 1 is vertically elongated and has a base portion 11 , an abutting portion 12 extending forward from the base portion 11 , and two extending forward from the front end portions of the base portion 11 respectively.
  • Guide post 13 The guide posts 13 are respectively disposed on both sides of the abutting portion 12 in the longitudinal direction to guide the docking of the docking connector (not shown).
  • the longitudinal direction refers to the width direction of the insulative housing 1.
  • the abutting portion 12 has a longitudinally extending butting groove 121 and a first wall 122 and a second wall 123 which are oppositely disposed on the lower side and the upper side of the butting groove 121.
  • the docking slot 121 is open to the front and is used to receive the docking connector.
  • the second wall 123 has a groove 1231 communicating with the docking groove 121 and a first portion 1232 and a second portion 1233 which are formed by the groove 1231.
  • the conductive terminal is not disposed in the recess 1231 and penetrates the front end surface of the insulative housing 1 in the mating direction.
  • the first wall 122 has a first expanded portion 1221 disposed opposite to the groove 1231 in the thickness direction of the insulating body 1 and a second expanded portion 1222 disposed opposite to the first portion 1232 in the thickness direction of the insulating body 1.
  • the first expansion portion 1221 and the second expansion portion 1222 have a certain height in the thickness direction and the width direction of the insulative housing 1 such that the thickness of the portion is thicker than other portions of the first wall 122.
  • the insulative housing 1 has a plurality of terminal fixing slots 14 extending through the front-rear direction, and the terminal fixing slots 14.
  • the first portion 1232 and the first expansion portion 1221 are respectively provided with seven terminal fixing slots 14, and the second portion 1233 is provided with fifteen terminal fixing slots 14, the second extension Three terminal fixing grooves 14 are provided in the portion 1222.
  • the terminal fixing grooves 14 of the first portion 1232 and the second portion 1233 are arranged in a row in the longitudinal direction and adjacent to the first wall 122; the first expanding portion 1221 and the second expanding portion The terminal fixing grooves 14 of the 1222 are arranged in a row in the longitudinal direction and are adjacent to the second wall 123.
  • a rear side of the base portion 11 is formed with a receiving portion 110, a side flap 111 disposed on the left and right sides of the receiving portion 110 in the longitudinal direction, and a rear cover that is engaged with the base portion 11 from the rear side (not shown). ).
  • the rear fixing cover 14 extends rearwardly into the receiving portion 110, and the rear cover functions as a limit protection for the conductive terminal 2.
  • the conductive terminal 2 includes a plurality of pairs of differential signal terminals, a plurality of ground terminals, and a plurality of power terminals.
  • the conductive terminals 2 are generally divided into four sets, which include a first set of terminals 20 respectively fixed to the first portion 1232, the second portion 1233, the first expanded portion 1221 and the second expanded portion 1222. a second set of terminals 21, a third set of terminals 22 and a fourth set of terminals 23.
  • the differential signal terminals are distributed in the first set of terminals 20 and the third set of terminals 22.
  • the first group of terminals 20 and the third group of terminals 22 respectively include seven conductive terminals 2, and are respectively fixed to the first portion 1232 of the insulative housing 1 and the terminal fixing groove 14 on the first expansion portion 1221. .
  • the seven conductive terminals 2 of the first set of terminals 20 conform to the definition of the signal terminals S1-S7 in the SATA connector specification, and include three ground terminals and two pairs of differential signal terminals spaced between adjacent ground terminals;
  • the seven conductive terminals 2 of the third group of terminals 22 conform to the definition of the signal terminals S8-S14 in the SATA connector specification, and also include three ground terminals and two pairs of differentially spaced between adjacent ground terminals.
  • the second group of terminals 21 includes fifteen conductive terminals 2 respectively corresponding to the terminal fixing slots 14 fixed on the second portion 1233 of the insulative housing 1, and the conductive terminals 2 in the second group of terminals 21 conform to the SATA.
  • terminals P1-P15 in the connector specification includes six power terminals of P7, P8, P9 and P13, P14 and P15.
  • the fourth set of terminals 23 includes three conductive terminals 2 respectively corresponding to the terminal fixing slots 14 fixed on the second expanding portion 1222.
  • the three conductive terminals 2 conform to the definition of the terminals E7-E9 in the SATA connector specification. It includes a pair of signal terminals and a detection terminal.
  • the arrangement of the conductive terminals 2 in the insulative housing 1 is the same as the arrangement direction in the SATA connector specification, that is, the conductive terminals 2 of the first group of terminals 20 and the second group of terminals 21 are arranged in a row.
  • the conductive terminals 2 of the third group terminal 22 and the fourth group terminal 23 are arranged in a row on the lower side of the docking groove 121.
  • Each of the conductive terminals 2 has a fixing portion 24 fixed in the terminal fixing groove 14 of the base portion 11, and a solder portion extending from one end of the fixing portion 24 to the contact portion 25 of the abutting portion 12 and the other end of the fixing portion 24 to the rear side of the base portion 11 Feet 26.
  • the fixing portion 24 is provided with a latching structure 241 that cooperates with the terminal fixing groove 14.
  • the contact portion 25 protrudes into the mating slot 121 to be electrically connected to the mating connector.
  • the solder fillet 26 is located in the receiving portion 110 on the rear side of the base portion 11; specifically, the solder fillet 26 is bent downwardly or rearward from the rear end of the fixing portion 24 to be soldered to the circuit board.
  • at least a portion of the conductive terminals 2 further include a connecting portion 27 that connects the fixing portion 24 and the solder fillet 26, and the solder fillet 26 extends downward from the rear end of the connecting portion 27 downward or rearward.
  • solder fillet 26 is disposed at least in two rows, and at least a portion of the conductive terminals 2 of the solder tail 26 in the front row are formed into a sheet-like terminal 2, which is prepared by using a metal sheet as a raw material by a blanking process.
  • the fixing portion 24, the contact portion 25, and the solder fillet 26 of the sheet-like terminal 2 to be formed by the blanking have the same width in the width direction of the insulating body 1.
  • the sheet-shaped terminal 2 formed by the blanking can be reduced in size in the longitudinal direction of the front and rear of the insulative housing 1, and the occupied space is small, and the solder fillet 26 does not need to be bent so that no bending space is reserved for the soldering leg 26, so that the solder fillet 26 is located
  • the soldering legs 26 of the conductive terminals 2 in the rear row are reliably designed in front, so that the length of the rear row of the conductive terminals 2 becomes shorter, the signal transmission path becomes shorter, the current impedance is lowered, and the high frequency signal is improved. Transmission effect.
  • the chip-shaped terminal 2 formed by blanking does not need to be bent to form a solder fillet in a post-process, and the process is simple, and the strength of the solder fillet is better, which can improve the yield and service life of the electrical connector.
  • the solder tails 26 of the conductive terminals 2 in the first group of terminals 20 and the second group of terminals 21 are located in the conductive terminals 2 of the fourth group of terminals 23 and the third group of terminals 22, respectively.
  • the fourth set of terminals 23 is prepared by a blanking process. Compared with the bent forming terminal, the three conductive terminals 2 of the E7-E9 formed by the blanking can be reduced in the longitudinal direction of the insulating body 1 and occupy a small space; and the three conductive terminals 2 of the E7 to E9 do not need to be bent.
  • the soldering legs 26 of the first group terminal 20 of S1 to S7 are reliably designed in front, and the length of the connecting portion 27 of the first group terminal 20 of S1 to S7 in the front-rear direction is longer than that of the second group of terminals.
  • the length of the connecting portion 27 of the 21 in the front-rear direction is small, so that the lengths of the first group terminals 20 of S1 to S7 are shortened, the signal transmission path is shortened, the current impedance is lowered, and the transmission effect of the high-frequency signal is improved.
  • the fixing portion 24, the contact portion 25, the solder fillet 26, and the connecting portion 27 of the sheet-shaped fourth group terminal 23 which are formed by blanking are referred to as a fourth fixing portion 234, a fourth contact portion 235, and a fourth solder fillet, respectively.
  • the fourth connecting portion 237; the fourth soldering leg 236 does not need to be bent in the post process, and the process is simple and the strength is better.
  • the fourth fixing portion 234, the fourth contact portion 235, and the fourth soldering leg 236 of the fourth group of terminals 23 have the same width in the longitudinal direction; and the fourth fixing portion 234 has the edge a pair of latching structures 241 are disposed on the top end and the bottom end of the fourth fixing portion 234 in the thickness direction of the insulating body 1 , and the positioning structures corresponding to the terminal fixing slots 14 of the second expanding portion 1222 are also disposed at the top end of the terminal fixing slot 14 . Bottom end.
  • the height of the fourth fixing portion 234 in the thickness direction of the insulative housing 1 is greater than the width of the fourth fixing portion 234 in the width direction of the insulative housing 1 , and the height of the fourth fixing portion 234 in the thickness direction of the insulative housing 1 is greater than the The height of the fourth contact portion 235 and the fourth soldering leg 236 in the thickness direction of the insulative housing 1; correspondingly, the height of the terminal fixing groove 14 on the second expansion portion 1222 in the thickness direction of the insulative housing 1 is greater than the insulation of the terminal fixing slot 14
  • the spacing between the adjacent two first sets of terminals 20 is reduced, and when the high frequency signal is transmitted, the impedance matching effect of the adjacent two first sets of terminals 20 is better, and the high frequency signal transmission effect is better. Further, the contact area between the fourth fixing portion 234 and the base portion 11 is large, and it can be better fixed to the base portion 11.
  • the fourth set of terminals 23 further includes a connecting portion 237 extending downward from the rear end of the fourth fixing portion 234, and the fourth soldering leg 236 extends horizontally rearward from the end of the connecting portion 237. , connected to the board by surface soldering.
  • At least a portion of the first terminal 10, the second group of terminals 21, and the third group of terminals 22 includes a connecting portion 27 that connects the fixing portion 24 and the solder fillet 26, the connecting portion
  • the width of at least a portion of the position of the insulating body 1 in the width direction is greater than the thickness of the solder fillet 26, so that the impedance of the conductive terminal 2 is small and the transmission of high frequency signals is high.
  • a portion of the connecting portion 27 has a width in the width direction of the insulative housing 1 that is greater than 2.1 times the thickness of the solder fillet 26.
  • the fixing portion 24, the contact portion 25, the solder fillet 26, and the connecting portion 27 of the first group of terminals 20 which are first cut and then bent and formed are respectively referred to as a first fixing portion.
  • the first contact portion 205, the first solder fillet 206, the connecting portion 207, the first solder fillet 206 extends horizontally rearward from the end of the connecting portion 207, at this time, the first solder fillet 206
  • the thickness of the first solder fillet 206 is along the thickness direction of the insulative housing 1.
  • the first fixing portion 204, the connecting portion 207 and the first soldering leg 206 are arranged in a stepped manner.
  • the connecting portion 207 includes a back end extending from the rear end of the first fixing portion 204. a first connecting portion 2071, a second connecting portion 2072 extending horizontally rearward from an end of the first connecting portion 2071, and a third connecting portion 2073 bent downward from an end of the second connecting portion 2072; the first soldering leg 206 The end of the third connecting portion 2073 extends horizontally rearward.
  • the width of the first connecting portion 2071 is smaller than the width of the second connecting portion 2072 and the third connecting portion 2073; and the second connecting portion 2072 and the third connecting portion 2073 are The width is greater than the width of the first solder fillet 206, and the widths of the second connecting portion 2072 and the third connecting portion 2073 are both greater than the thickness of the first solder fillet 206.
  • the width of the portion of the connecting portion 207 in the width direction of the insulating body 1 is greater than the thickness of the first solder fillet 206.
  • the portion of the connecting portion 207 has a width greater than the width of the insulating body 1 in the width direction.
  • a solder fillet 206 has a thickness of 2.1 times.
  • the width of the second connecting portion 2072 and the third connecting portion 2073 in the width direction of the insulating body 1 is greater than 2.1 times the thickness of the first solder fillet 206 to reduce the impedance of the first set of terminals 20. To improve the transmission of high frequency signals.
  • a second preferred embodiment of the electrical connector 100 of the present invention is different from the first preferred embodiment only in the structure of the fourth group of terminals 23, and for fixing the The structure of the terminal fixing groove 14 of the fourth group of terminals 23 is changed accordingly; the other details are not described herein.
  • the fourth soldering leg 236 is formed by bending downward from the rear end of the fourth fixing portion 234, and is soldered to the circuit board by inserting and soldering.
  • a third preferred embodiment of the electrical connector 100 of the present invention is different from the first preferred embodiment in that the structures of the first group of terminals 20 and the third group of terminals 22 are different. And the structure of the terminal fixing groove 14 for fixing the first group of terminals 20 and the third group of terminals 22 is changed accordingly; the other details are not described herein.
  • the first set of terminals 20 that are first cut and then bent and formed have a first fixing portion 204 , a first contact portion 205 , a first solder fillet 206 , and a connection between the first fixing portion 204 and the first portion.
  • the connecting portion 207 includes only a first connecting portion 2071 extending backward from the rear end of the first fixing portion 204, and the first soldering leg 206 is horizontally rearward from the end of the first connecting portion 2071. extend.
  • the width of the connecting portion 207 as a whole of the first connecting portion 2071 in the width direction of the insulating body 1 is greater than the width of the first solder fillet 206 along the width direction of the insulating body 1; and the connecting portion The width of the entire 207 along the width direction of the insulative housing 1 is greater than the thickness of the first solder fillet 206. In a preferred embodiment, the width of the connecting portion 207 along the width direction of the insulating body 1 is greater than 2.1 times the thickness of the first solder fillet 206.
  • the fixing portion 24, the contact portion 25, the solder fillet 26 and the connecting portion 27 of the third group of terminals 22 which are first cut and then bent and formed are referred to as a third fixing portion 224 and a third contact, respectively.
  • the connecting portion 227 includes only a first connecting portion 2271 extending backward from the rear end of the third fixing portion 224, and the first soldering leg 226 is horizontally rearward from the end of the first connecting portion 2271. extend.
  • the connecting portion 227 as a whole that is, the first connecting portion 2271 along the width direction of the insulating body 1
  • the width is greater than the width of the third solder fillet 226 along the width direction of the insulative housing 1; and the width of the connecting portion 227 as a whole in the width direction of the insulative housing 1 is greater than the thickness of the third solder fillet 226.
  • the width of the connecting portion 227 along the width direction of the insulating body 1 is greater than 2.1 times the thickness of the third solder fillet 226.
  • solder fillet 26 of the conductive terminal 2 part of the solder fillet 26 is located on the same soldering plane, and is soldered to the circuit board by surface soldering, and another solder fillet 26 extends perpendicular to the soldering plane to be inserted and soldered. The method is soldered to the circuit board.
  • the electrical connector 100 of the present invention at least a part of the conductive terminals 2 of the solder fillet 26 in the front row are chip-shaped terminals formed by blanking, and the chip-shaped terminals formed by the blanking are along the front and rear depths of the insulating body 1.
  • the size can be reduced in the direction, the occupied space is small, and there is no need to bend so that no bending space is reserved for the lead leg 26, so that the solder fillet 26 of the conductive terminal 2 in the rear row is reliably designed in front, thereby
  • the length of the conductive terminal 2 is shortened, the signal transmission path is shortened, the current impedance is lowered, and the transmission effect of the high-frequency signal is improved.
  • the chip-shaped terminal formed by the blanking process does not need to be bent by the post-process to form the solder fillet, the process is simple, and the strength of the solder fillet is better, which can improve the yield and service life of the electrical connector 100.
  • the partial conductive terminal 2 of the electrical connector 100 includes a fixing portion 24, a contact portion 25, a solder fillet 26, and a connecting portion 27 connecting the fixing portion 24 and the solder fillet 26, and the connecting portion 27 is at least partially positioned.
  • the width in the width direction of the insulative housing 1 is greater than 2.1 times the thickness of the solder fillet 26, so that the impedance of the conductive terminal 2 is small, and high-frequency signal transmission is improved.
  • any reference to "the embodiment” in this specification means that a particular function, structure, or characteristic description relating to an embodiment comprises at least one embodiment of the invention. These phrases appearing in various places in the specification are not necessarily referring to the same embodiment. Further, the specific functions, structures, or details described in connection with any embodiment are considered to be a function, structure, or characteristic that is related to other embodiments within the scope of the technology.

Abstract

一种电连接器，其包括绝缘本体（1）及导电端子（2），绝缘本体（1）具有基部（11）、自基部（11）向前延伸的对接部（12），对接部（12）具有纵长延伸的对接槽（121）和相对设置于对接槽（121）上下两侧的第一壁（122）和第二壁（123），第二壁（123）具有与对接槽（121）相连通的凹槽（1231）以及被凹槽（1231）间隔形成的第一部分（1232）和第二部分（1233），所述第一壁（122）具有沿厚度方向与凹槽（1231）相对设置的第一扩展部（1221）和与第一部分（1232）沿绝缘本体（1）厚度方向相对设置的第二扩展部（1222）；基部（11）设有端子收容槽（14）；所述导电端子（2），包括分别固定于第一部分（1232）、第二部分（1233）、第一扩展部（1221）和第二扩展部（1222）上的第一组端子（20）、第二组端子（21）、第三组端子（22）和第四组端子（23）；焊脚（26）位于前排中的至少部分导电端子为下料成型的片状端子（2），该端子（2）的固定部（24）、接触部（25）、焊脚（26）在绝缘本体（1）宽度方向的宽度相同。

Description

电连接器
本申请要求了申请日为2015年05月25日，申请号为201510269734.4，发明名称为“电连接器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电连接器，尤其涉及一种端子制备工艺简单、焊脚强度较佳且信号端子阻抗小、高频信号传输性能较好的电连接器。
背景技术
随着电子产业的迅速发展，电连接器作为一种传输数字信号、音频信号及图像信号等的连接装置已得到广泛应用。随着科学技术的发展，电连接器的信号传输速度、安全性以及体积大小等要求逐渐增高，由此使得愈来愈多的电连接器需要容纳较多的可传输高频信号的端子。然而，现有信号端子设计为冲模折弯成型；此种设计的焊脚细长易变形，又需后制程弯折加工，工艺较复杂；且现有信号端子阻抗高，造成return loss及insertion loss都比较差，难以达到较高的信号传输。
有鉴于此，有必要对现有的电连接器予以改进，以解决上述问题。
发明内容
本发明的目的在于提供一种端子制备工艺简单、焊脚强度较佳且信号端子阻抗小、高频信号传输性能较好的电连接器。
为实现上述发明目的，本发明提供了一种电连接器，包括：绝缘本体，所述绝缘本体具有基部、自基部向前延伸的对接部，所述对接部具有纵长延伸的对接槽和相对设置于对接槽下侧、上侧的第一壁、第二壁，所述第二壁具有与对接槽相连通的凹槽以及被凹槽间隔形成的第一部分和第二部分，所述第一壁具有沿厚度方向与凹槽相对设置的第一扩展部和与第一部分沿绝缘本体厚度方向相对设置的第二扩展部；基部设有端子固定槽；导电端子，包括分别固定于第一部分、第二部分、第一扩展部和第二扩展部上的第一组端子、第二组端子、第三组端子和第四组端子，每一导电端子具有固定于基部的固定部，自固定部一端延伸至对接部的接触部和自固定部另一端延伸至基部后侧的焊脚；所述焊脚至少呈前后两排设置；焊脚位于前排中的至少部分导电端子为下料成型的片状端子，该下料成型的片状端子的固定部、接触部、焊脚在绝缘本体宽度方向的宽度相同。
作为本发明的进一步改进，所述下料成型的片状端子为第四组端子，所述第四组端子的焊脚位于所述第一组端子的焊脚的前侧。
作为本发明的进一步改进，所述下料成型的片状端子的固定部在绝缘本体厚度方向的高度大于该导电端子的接触部、焊脚在绝缘本体厚度方向的高度。
作为本发明的进一步改进，所述下料成型的片状端子的固定部在绝缘本体厚度方向的高度大于该固定部在绝缘本体宽度方向的宽度；用于固定所述下料成型的片状端子的端子固定槽在绝缘本体厚度方向的高度大于该端子固定槽在绝缘本体宽度方向的宽度。
作为本发明的进一步改进，所述下料成型的片状端子的焊脚自所述固定部后端向下弯曲延伸形成。
作为本发明的进一步改进，所述下料成型的片状端子还包括自所述固定部后端向下弯曲延伸的连接部，所述焊脚自连接部末端水平向后延伸形成。
作为本发明的进一步改进，第一组端子、第二组端子和第三组端子中的至少部分所述导电端子还设有连接所述固定部与所述焊脚的连接部，所述连接部的至少部分位置在绝缘本体宽度方向的宽度大于所述焊脚厚度的2.1倍。
作为本发明的进一步改进，所述焊脚自所述连接部末端水平向后延伸，所述固定部、所述连接部、所述焊脚呈阶梯状分布。
作为本发明的进一步改进，所述连接部整体沿所述绝缘本体宽度方向的宽度大于所述焊脚沿所述绝缘本体宽度方向的宽度；所述连接部的至少部分位置为所述连接部整体。
作为本发明的进一步改进，所述连接部包括自所述固定部后端先向后再向下弯折延伸的第一连接部、自第一连接部末端水平向后延伸的第二连接部、自第二连接部末端向下弯折的第三连接部。
作为本发明的进一步改进，所述第一连接部在所述绝缘本体宽度方向的宽度小于所述第二连接部和第三连接部在绝缘本体宽度方向的宽度。
作为本发明的进一步改进，所述连接部的至少部分位置包括所述第二连接部和所述第三连接部。
作为本发明的进一步改进，所述导电端子的焊脚中，部分焊脚位于同一焊接平面，另外部分焊脚垂直于所述焊接平面延伸。
本发明的有益效果是：本发明电连接器中所述焊脚位于前排中的至少部分导电端子为下料成型的片状端子，下料成型的片状端子沿绝缘本体1的前后纵深方向上尺寸可减小，占用空间较小，且无需折弯从而无需对其预留折弯空间，进而使得所述焊脚位于后排中的导电端子的焊脚可靠前设计，从而后排导电端子长度变短，讯号传输路径变短，降低电流阻抗，提高高频信号的传输效果。另外，下料成型的片状端子无需后制程弯折形成焊脚，工艺简单，且焊脚强度较佳，可提高电连接器良率与使用寿命。
附图说明
图1是本发明电连接器第一较佳实施例的立体示意图。
图2是图1于另一角度的立体示意图。
图3是图2所示电连接器的分解图。
图4是图1所示电连接器中绝缘本体的立体示意图。
图5是图4于另一角度的立体示意图。
图6是图1所示电连接器中第四组端子的结构示意图。
图7是图1所示电连接器中第一组端子的结构示意图。
图8是本发明的电连接器第二较佳实施例的立体示意图。
图9是图8所示电连接器的分解图。
图10是图9所示电连接器的第四组端子的结构示意图。
图11是本发明的电连接器第三较佳实施例的立体示意图。
图12是图11所示电连接器的分解图。
图13是图11所示电连接器中第一组端子的结构示意图。
图14是图11所示电连接器中第三组端子的结构示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面结合附图和具体实施例对本发明进行详细描述。
请参图1至图7所示为本发明电连接器100的第一较佳实施例，于本实施例中，所述电连接器100具体为线端的SATA连接器，并且包括绝缘本体1、固定于所述绝缘本体1内的若干导电端子2。
请参图1至图5所示，所述绝缘本体1整体呈纵长型，并具有基部11、自基部11向前延伸的对接部12、自基部11前侧两端分别向前延伸的两个导柱13。所述导柱13分别设置于所述对接部12沿纵长方向的两侧，以导引对接连接器(未图示)的插接。本发明中，纵长方向指绝缘本体1的宽度方向。
所述对接部12具有纵长延伸的对接槽121和相对设置于对接槽121下侧、上侧的第一壁122、第二壁123。所述对接槽121向前开放设置，并用以收容对接连接器。所述第二壁123具有与对接槽121相连通的凹槽1231以及被凹槽1231间隔形成的第一部分1232和第二部分1233。所述凹槽1231内没有设置导电端子且沿对接方向贯穿绝缘本体1的前端面。
所述第一壁122具有沿绝缘本体1厚度方向与凹槽1231相对设置的第一扩展部1221和与第一部分1232沿所述绝缘本体1厚度方向相对设置的第二扩展部1222。所述第一扩展部1221和第二扩展部1222于绝缘本体1厚度方向和宽度方向上均具有一定的高度，使得该部分的厚度较第一壁122的其他部分厚。
所述绝缘本体1具有若干沿前后方向贯穿设置的端子固定槽14，所述端子固定槽14。其中，所述第一部分1232和第一扩展部1221上分别设置有七个所述端子固定槽14，所述第二部分1233上设置有十五个所述端子固定槽14，所述第二扩展部1222上设置有三个所述端子固定槽14。
于本实施例中，所述第一部分1232和第二部分1233的端子固定槽14沿纵长方向排列设置为一排，且靠近第一壁122；所述第一扩展部1221和第二扩展部1222的端子固定槽14沿纵长方向排列设置为一排，且靠近所述第二壁123。
所述基部11的后侧中间形成有一收容部110、位于所述收容部110沿纵长方向的左右两侧设置的侧翼111、从后侧与所述基部11扣合的后盖(未图示)。导电端子2的部分结构 自所述端子固定槽14向后伸入所述收容部110内，所述后盖对导电端子2起到限位保护作用。
请参图1至图3所示，所述导电端子2包括有若干对差分信号端子、若干接地端子以及若干电源端子。于本实施例中，所述导电端子2总体分为四组设置，其包括分别固定于第一部分1232、第二部分1233、第一扩展部1221和第二扩展部1222上的第一组端子20、第二组端子21、第三组端子22和第四组端子23。
所述差分信号端子分布于第一组端子20和第三组端子22中。其中，所述第一组端子20和第三组端子22中分别包括有七根导电端子2，并且分别对应固定于绝缘本体1的第一部分1232和第一扩展部1221上的端子固定槽14内。第一组端子20中的七根导电端子2符合SATA连接器规格书中信号端子S1-S7的定义，其包括有三根接地端子和间隔设置于相邻接地端子之间的两对差分信号端子；所述第三组端子22中的七根导电端子2符合SATA连接器规格书中信号端子S8-S14的定义，其也包括有三根接地端子和间隔设置于相邻接地端子之间的两对差分信号端子。所述第二组端子21包括有十五根导电端子2，分别对应固定于绝缘本体1的第二部分1233上的端子固定槽14内，并且该第二组端子21中的导电端子2符合SATA连接器规格书中端子P1-P15的定义，其中包括有P7、P8、P9和P13、P14、P15六根电源端子。所述第四组端子23包括有分别对应固定于第二扩展部1222上的端子固定槽14内的三根导电端子2，该三根导电端子2符合SATA连接器规格书中端子E7-E9的定义，其包括一对信号端子和一根侦测端子。
另，所述导电端子2在绝缘本体1中的排布方式与SATA连接器规格书中的排布方向相同，即第一组端子20和第二组端子21中的导电端子2成一排设置于对接槽121上侧，第三组端子22和第四组端子23中的导电端子2成一排设置于对接槽121下侧。
每一导电端子2具有固定于基部11的端子固定槽14内的固定部24，自固定部24一端延伸至对接部12的接触部25和自固定部24另一端延伸至基部11后侧的焊脚26。所述固定部24设有与所述端子固定槽14相配合的卡位结构241。所述接触部25突伸入所述对接槽121内，以与对接连接器电性连接。所述焊脚26位于基部11后侧的收容部110内；具体地，所述焊脚26自固定部24后端向下或向后弯曲延伸，以与电路板焊接。另外，至少部分所述导电端子2还包括连接所述固定部24与所述焊脚26的连接部27，所述焊脚26自连接部27后端向下或向后弯曲延伸。
另外，所述焊脚26至少呈前后两排设置，焊脚26位于前排中的至少部分导电端子2为下料成型的片状端子2，以金属片为原料采用下料成型工艺制备而成，该下料成型的片状端子2的固定部24、接触部25及焊脚26在绝缘本体1宽度方向的宽度相同。下料成型的片状端子2沿绝缘本体1的前后纵深方向上尺寸可减小，占用空间较小，且焊脚26无需折弯从而无需对其预留折弯空间，进而使得焊脚26位于后排中的导电端子2的焊脚26可靠前设计，从而后排导电端子2长度变短，讯号传输路径变短，降低电流阻抗，提高高频信号的 传输效果。另外，下料成型的片状端子2无需后制程弯折形成焊脚，工艺简单，且焊脚强度较佳，可提高电连接器良率与使用寿命。
本实施例中，请参图6所示，第一组端子20和第二组端子21中的导电端子2的焊脚26分别位于第四组端子23和第三组端子22中的导电端子2的焊脚26的后侧。第四组端子23采用下料成型工艺制备。相较于折弯成型的端子，下料成型的E7～E9三根导电端子2沿绝缘本体1的前后纵深方向上尺寸可减小，占用空间较小；且E7～E9三根导电端子2无需折弯从而无需对其预留折弯空间，从而使得S1～S7第一组端子20的焊脚26可靠前设计，S1～S7第一组端子20的连接部27沿前后方向的长度比第二组端子21的连接部27沿前后方向的长度小，使得S1～S7第一组端子20的长度变短，讯号传输路径变短，降低电流阻抗，提高高频信号的传输效果。另外，下料成型的片状的第四组端子23的固定部24、接触部25、焊脚26、连接部27分别被称为第四固定部234、第四接触部235、第四焊脚236、第四连接部237；所述第四焊脚236无需后制程弯折，工艺简单且强度较佳。
区别于冲模折弯成型的端子，所述第四组端子23的第四固定部234、第四接触部235、第四焊脚236沿纵长方向的宽度相同；且第四固定部234具有沿绝缘本体1厚度方向分设于所述第四固定部234顶端、底端的一对卡位结构241，第二扩展部1222的端子固定槽14相对应的定位结构也分设于端子固定槽14的顶端、底端。
另，所述第四固定部234在绝缘本体1厚度方向的高度大于该第四固定部234在绝缘本体1宽度方向的宽度，且第四固定部234在绝缘本体1厚度方向的高度大于所述第四接触部235、第四焊脚236在绝缘本体1厚度方向的高度；相应地，第二扩展部1222上的端子固定槽14在绝缘本体1厚度方向的高度大于该端子固定槽14在绝缘本体1宽度方向的宽度。故，相邻两个第一组端子20的间距得以减小，进而在进行高频信号传输时，相邻两个第一组端子20的阻抗匹配效果较好，高频信号传输效果较佳，且第四固定部234与基部11的接触面积较大，能够更好地固定于基部11中。
该实施例中，所述第四组端子23还包括自所述第四固定部234后端向下弯曲延伸的连接部237，所述第四焊脚236自连接部237末端水平向后延伸形成，以表面焊接方式与电路板连接。
另外，第一组端子10、第二组端子21和第三组端子22中的至少部分所述导电端子2包括连接所述固定部24与所述焊脚26的连接部27，所述连接部27的至少部分位置在绝缘本体1宽度方向的宽度大于所述焊脚26的厚度，使得该导电端子2的阻抗较小，高频信号的传输较高。优选的，所述连接部27的部分位置在绝缘本体1宽度方向的宽度大于所述焊脚26的厚度的2.1倍。
本实施例中，请参图7所示，先下料切割再折弯成型的第一组端子20的固定部24、接触部25、焊脚26、连接部27分别被称为第一固定部204、第一接触部205、第一焊脚206、连接部207，所述第一焊脚206自所述连接部207末端水平向后延伸，此时所述第一焊脚206 的厚度即为所述第一焊脚206沿绝缘本体1厚度方向的厚度。所述第一固定部204、连接部207和第一焊脚206呈阶梯状分布，具体地，所述连接部207包括自所述第一固定部204后端先向后再向下弯折延伸的第一连接部2071、自第一连接部2071末端水平向后延伸的第二连接部2072、自第二连接部2072末端向下弯折的第三连接部2073；所述第一焊脚206自第三连接部2073末端水平向后延伸。
在所述绝缘本体1宽度方向，所述第一连接部2071的宽度小于所述第二连接部2072和第三连接部2073的宽度；而所述第二连接部2072和第三连接部2073的宽度均大于所述第一焊脚206的宽度，且所述第二连接部2072和第三连接部2073的宽度均大于所述第一焊脚206的厚度。
所述连接部207的部分位置在绝缘本体1宽度方向的宽度大于所述第一焊脚206的厚度；优选的，所述连接部207的部分位置在绝缘本体1宽度方向的宽度大于所述第一焊脚206的厚度的2.1倍。本实施例中，所述第二连接部2072和第三连接部2073在绝缘本体1宽度方向的宽度均大于所述第一焊脚206的厚度的2.1倍，以降低第一组端子20的阻抗，提高高频信号的传输。
请参图8至图10所示为本发明电连接器100的第二较佳实施例，与第一较佳实施例的区别仅在于第四组端子23的结构不同，及用于固定所述第四组端子23的端子固定槽14的结构做相应地变化；其他于此不再赘述。在本实施例中，所述第四焊脚236自所述第四固定部234后端向下弯曲延伸形成，以插入焊接方式与电路板焊接。
请参图11至图14所示为本发明电连接器100的第三较佳实施例，与第一较佳实施例的区别仅在于第一组端子20与第三组端子22的结构不同，及用于固定所述第一组端子20与第三组端子22的端子固定槽14的结构做相应地变化；其他于此不再赘述。
请参图13所示，先下料切割再折弯成型的第一组端子20具有第一固定部204、第一接触部205、第一焊脚206、连接所述第一固定部204与第一焊脚206的连接部207。所述连接部207仅包括自所述第一固定部204后端先向后再向下弯折延伸的第一连接部2071，所述第一焊脚206自第一连接部2071末端水平向后延伸。
本实施例中，所述连接部207整体也即第一连接部2071沿所述绝缘本体1宽度方向的宽度大于第一焊脚206沿所述绝缘本体1宽度方向的宽度；且所述连接部207整体沿所述绝缘本体1宽度方向的宽度大于第一焊脚206的厚度。优选方案中，所述连接部207整体沿所述绝缘本体1宽度方向的宽度大于第一焊脚206的厚度的2.1倍。
请参图14所示，先下料切割再折弯成型的第三组端子22的固定部24、接触部25、焊脚26和连接部27分别被称为第三固定部224、第三接触部225、第三焊脚226、连接部227。所述连接部227仅包括自所述第三固定部224后端先向后再向下弯折延伸的第一连接部2271，所述第一焊脚226自第一连接部2271末端水平向后延伸。
本实施例中，所述连接部227整体也即第一连接部2271沿所述绝缘本体1宽度方向的 宽度大于第三焊脚226沿所述绝缘本体1宽度方向的宽度；且所述连接部227整体沿所述绝缘本体1宽度方向的宽度大于第三焊脚226的厚度。优选方案中，所述连接部227整体沿所述绝缘本体1宽度方向的宽度大于第三焊脚226厚度的2.1倍。
上述实施例，所述导电端子2的焊脚26中，部分焊脚26位于同一焊接平面，以表面焊接方式焊接于电路板上，另外部分焊脚26垂直于所述焊接平面延伸，以插入焊接方式焊接于电路板上。
综上所述，本发明电连接器100中所述焊脚26位于前排中的至少部分导电端子2为下料成型的片状端子，下料成型的片状端子沿绝缘本体1的前后纵深方向上尺寸可减小，占用空间较小，且无需折弯从而无需对其预留折弯空间，进而使得所述焊脚26位于后排中的导电端子2的焊脚26可靠前设计，从而导电端子2长度变短，讯号传输路径变短，降低电流阻抗，提高高频信号的传输效果。另外，下料成型的片状端子无需后制程弯折形成焊脚，工艺简单，且焊脚强度较佳，可提高电连接器100良率与使用寿命。
所述电连接器100的部分导电端子2包括固定部24、接触部25、焊脚26、连接所述固定部24与所述焊脚26的连接部27，通过所述连接部27至少部分位置在绝缘本体1宽度方向的宽度大于所述焊脚26的厚度的2.1倍，使得导电端子2的阻抗较小，提高高频信号传输。
以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的精神和范围。
本说明书中任何相关的“本实施例”，意味着与实施例有关的一个特定的功能、结构、或特性描述包含本发明的至少一个实施例。这些出现在说明书各个地方的短语不一定指相同的实施例。进一步地，与任一实施例相关的特定的功能、结构、或细节描述，则认为是在本技术领域范围内与其他实施例相关的功能、结构或特性。

Claims (13)

  1. 一种电连接器，包括：
    绝缘本体，所述绝缘本体具有基部、自基部向前延伸的对接部，所述对接部具有纵长延伸的对接槽和相对设置于对接槽下侧、上侧的第一壁、第二壁，所述第二壁具有与对接槽相连通的凹槽以及被凹槽间隔形成的第一部分和第二部分，所述第一壁具有沿厚度方向与凹槽相对设置的第一扩展部和与第一部分沿绝缘本体厚度方向相对设置的第二扩展部；基部设有端子固定槽；
    导电端子，包括分别固定于第一部分、第二部分、第一扩展部和第二扩展部上的第一组端子、第二组端子、第三组端子和第四组端子，每一导电端子具有固定于基部的固定部，自固定部一端延伸至对接部的接触部和自固定部另一端延伸至基部后侧的焊脚；
    其特征在于：所述焊脚至少呈前后两排设置；焊脚位于前排中的至少部分导电端子为下料成型的片状端子，该下料成型的片状端子的固定部、接触部、焊脚在绝缘本体宽度方向的宽度相同。
  2. 根据权利要求1所述的电连接器，其特征在于：所述下料成型的片状端子为第四组端子，所述第四组端子的焊脚位于所述第一组端子的焊脚的前侧。
  3. 根据权利要求1所述的电连接器，其特征在于：所述下料成型的片状端子的固定部在绝缘本体厚度方向的高度大于该导电端子的接触部、焊脚在绝缘本体厚度方向的高度。
  4. 根据权利要求1所述的电连接器，其特征在于：所述下料成型的片状端子的固定部在绝缘本体厚度方向的高度大于该固定部在绝缘本体宽度方向的宽度；用于固定所述下料成型的片状端子的端子固定槽在绝缘本体厚度方向的高度大于该端子固定槽在绝缘本体宽度方向的宽度。
  5. 根据权利要求1所述的电连接器，其特征在于：所述下料成型的片状端子的焊脚自所述固定部后端向下弯曲延伸形成。
  6. 根据权利要求1所述的电连接器，其特征在于：所述下料成型的片状端子还包括自所述固定部后端向下弯曲延伸的连接部，所述焊脚自连接部末端水平向后延伸形成。
  7. 根据权利要求2所述的电连接器，其特征在于：第一组端子、第二组端子和第三组端子中的至少部分所述导电端子还设有连接所述固定部与所述焊脚的连接部，所述连接部的至少部分位置在绝缘本体宽度方向的宽度大于所述焊脚厚度的2.1倍。
  8. 根据权利要求7所述的电连接器，其特征在于：所述焊脚自所述连接部末端水平向后延伸，所述固定部、所述连接部、所述焊脚呈阶梯状分布。
  9. 根据权利要求7所述的电连接器，其特征在于：所述连接部整体沿所述绝缘本体宽度方向的宽度大于所述焊脚沿所述绝缘本体宽度方向的宽度；所述连接部的至少部分位置为所述连接部整体。
  10. 根据权利要求7所述的电连接器，其特征在于：所述连接部包括自所述固定部后端先向后再向下弯折延伸的第一连接部、自第一连接部末端水平向后延伸的第二连接部、自第二连接部末端向下弯折的第三连接部。
  11. 根据权利要求10所述的电连接器，其特征在于：所述第一连接部在所述绝缘本体宽度方向的宽度小于所述第二连接部和第三连接部在绝缘本体宽度方向的宽度。
  12. 根据权利要求10所述的电连接器，其特征在于：所述连接部的至少部分位置包括所述第二连接部和所述第三连接部。
  13. 根据权利要求1所述的电连接器，其特征在于：所述导电端子的焊脚中，部分焊脚位于同一焊接平面，另外部分焊脚垂直于所述焊接平面延伸。
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