TW200525824A - Socket connector - Google Patents

Abstract

A socket connector for electrically connecting an electronic device with a circuit board is disclosed in the present invention. The invention includes an insulating housing and plural terminals. The insulating housing has plural penetrating through holes, in which the penetrating through hole shows a roughly T-shape and has a limit trough. Plural terminals are accommodated inside the corresponding through holes; and each terminal includes a main body, a contact portion and a soldering portion with elasticity. The main body is locked and fixed inside the limit trough through the wing part, which is bended to protrude from both sides. The contact portion is disposed at one side of the main body to electrically contact with the electronic device. The soldering part is bended downwards to extend from the main body so as to form a bonding face for receiving the solder ball.

Description

200525824 • 'Explanation of the invention (1) The technical field to which the invention belongs] The present invention relates to a socket connector, in particular to a socket (Bal 1 Grid Array Package, BGA) socket connected to a crypan 歹 丨 plugged with a plurality of conductive terminals . Adaptable, its internal [previous technology] With the advancement of integrated circuit technology, the improvement of equipment and the use of advanced technologies, it has evolved from large-scale integrated circuits (Large_Scale Int technology | to ultra-large-scale integrated circuits ( ultra Large — Scaie a 10n) Integration), the circuit density of silicon chips has been continuously improved, and the number of pin-in (I / O) pins has increased dramatically. In order to meet the needs of development, to avoid crosstalk, and to cope with a large number of pins, the packaging requirements are becoming more stringent, such as the development of a ball grid array on the package and the '1Bal1 Grid Array Package (BGA). Sub-packaging However, even the best package of electronic components must be connected to the circuit board through a connector. The 丨 / 〇 terminal of the packaged electronic component is externally connected under the electronic component. Whether it is a planar array package or a ball grid array knife, the conductive terminal in the socket connector must be electrically connected to the circuit board. The conductive terminals are all conductive. Made of precious metals with good properties. Especially in the array packaging, the pins of the packaged electronic components are spherical or dots: the terminals of the socket connector are elastically and electrically contacted, and the lower part of the socket is a soldering part; Solder to the circuit board by solder balls. ^ 誃 The end connector is placed on the circuit board, and then the high temperature heat of the reflow furnace is used to twist the f solder ball and connect the terminals of the socket connector. 〃 Make 200525824

V. Description of the invention (2) The previous technology of the BGA socket connector terminal is like the Republic of China No. 371Π2. Refer to the first figure for a front view of the prior art socket connection j terminal. The prior art is a typical BGA socket connection. The terminal 90 has a main body 92, a contact portion 94 that is elastically upward from the main body 92 to contact the pins of the packaged electronic component, and is bent down from the main body 9 2. The extended soldering portion 96 is soldered to the circuit board. Please refer to the second figure again for a sectional view of the terminals of the prior art socket connector assembled in the socket connector. The terminal 9 〇 is assembled in a socket connector 80. The socket connector 80 has a through hole 8 2, and two sides of the through hole 8 2 are formed with engaging grooves 8 4 to engage the body 9 2 convexly.出 的 clip 部 9 2 2。 The fixing portion 9 2 2.

In the prior art, when the terminal 90 is assembled in the through hole 82 of the socket connector 80, the force can only be applied by the topmost contact portion 94. However, the contact portion 94 is designed to have a flexible structure to contact the BGA package. Electronic components are not easy to withstand the force of depression. Moreover, the design of the body 92 is a plate-like shape. It is not easy to bear the amount of downforce during assembly, and it is easy to cause the terminal 90 to bend to produce the so-called pin phenomenon. It is not only difficult to detect, but also difficult to replace. The quality of the socket connector is huge, and the cost is wasted. On the other side, due to the lack of positioning structure when the terminal 90 is inserted downward, the depth of the terminal 90 insertion is difficult to control, which indirectly causes the contact points of the upper contact portion 94 to be uneven, which affects the electronic components. Electrical connection and signal transmission, its assembly quality is not easy to control. Therefore, it can be seen from the above that the conventional socket connector and the terminal described above obviously have inconvenience and lack in practical use, and can be improved.

200525824 V. Description of the invention (3) ___ I The present inventor felt that the above-mentioned deficiency can be modified to study and cooperate with the application of theories ^ You are good at researching the above-mentioned missing invention. Oral and effective improvement [Content of the invention] 'It is to mention the terminal, which is equipped with power, the socket connector' is to mention the two, so that the upper end and the signal are conducted and their terminals are electrically connected and biased. A displacement, a connector, is a system which has a plurality of terminals; a flexible 丨 for the purpose is provided-a type of socket connection crying: = the insulating shell of the connector; the terminal is inserted into the insulating shell The body can withstand downward pressure to avoid: the k shape of the child without causing the quality of | Another aspect of the present invention & MWI _.. ^ The spoon system provides a socket for the connection of a socket for the socket connector M opening mouth edge body and matching terminals | Matching & The mounting position structure can control the depth of the terminal insertion: the dots are flat and ensure the quality of the electrical connection with the electronic components. Another object of the present invention is to provide a socket connection, in which the insulating shell of the socket connector has a supporting and blocking effect on the contact portion of the terminal, and reduces the torque of the terminal to make the educator The electronic components are electrically connected. In order to achieve the above-mentioned main purpose, a socket power supply element of the present invention is connected to a circuit board, and includes an insulating shell with several through-holes. The through-hole has a limiting slot; and a complex is accommodated in the corresponding one. In the through hole, each terminal includes a wing portion protruding from both sides thereof to be fastened in the limiting slot. Page 7 200525824 V. The contact portion of the invention and a solder ball joint In order to reach the through-hole | contact part, the stopper I abuts. To achieve (4) is from the Department by the surface. The upper half of the upward protrusion is positioned above the body to extend upward and is electrically conductive with the electronic component; the body is bent downward and extended to form a socket connector for receiving the tin. The socket connector of the present invention has a part In cooperation with the contact portion, a receiving space is provided for the connection. A platform is formed on the bottom surface of the receiving space and a beveled side for the bottom elastic arm of the contact portion is bent by the abutment. Fold to the free end of the body. It is to be noted that the description is only for the purpose of restricting any restrictions. The socket connector of the present invention, wherein each terminal includes an abutment portion extending laterally and obliquely from the body, and the two abutment portions. One side of the top end facing the body is bent and then the other side is reversed; wherein the contact portion is provided on the elastic arm. The preferred embodiment of the present invention is described in detail below, but is used to explain the present invention, but not to the present invention. [Embodiment] Please refer to the second and fourth figures, which are bottom views of the terminal assembly of the socket connector of the present invention, and an enlarged view of the circled part A in the third figure. Terminals are not assembled). The socket connector 1 includes a housing I 0, which has a plurality of through holes 20 passing therethrough. The through holes P ^ vj are T-shaped and have a limiting slot 22. The through hole 20 contains a plurality of electric terminals 30. The terminal 30 is passed by a metal strip with good conductivity.

Page 8 200525824 V. Description of the invention (5) It is made by punching and bending. Each terminal 30 has a fixing device 3 3 protruding from both sides of the terminal 30 to interfere and be fixed in the limiting slot 22. Please refer to the fifth to seventh figures, which are an exploded perspective view of the socket connection terminal and the local socket connector, a perspective view of the socket connector terminal ^, and a perspective combination view of the socket connector and the terminal, respectively. Each terminal 30 includes a body 32, a contact section 38, and a soldering portion 36. The main body 32 has wing portions 33 protruding from both sides of the body 32 as fixing means of the terminal 30 to be fixed in the limiting groove 22. The pair of wings 33 are at an angle with the body 32 and are slightly xj-shaped, thereby strengthening the structure of the terminal 30 and avoiding needle breakage during assembly. Each wing portion 3 3 is an interference portion 3 3 2 having a concave-convex structure to be clamped on the inner wall surface of the limiting groove 22. The contact section 38 is slightly s-shaped and is disposed on one side of the body 32, and has elastic contact with the pins of the electronic component combined with the socket connector 丄. The contact section 3 8 of the terminal 30 includes an abutment portion 3 8 that extends laterally and obliquely from the body 3 2, and an elastic arm 3 8 6 faces the body 3 2 from the top of the abutment portion 3 8 2. One side of the flexible arm is bent and then bent to the other side of the main body 32. The elastic arm 3 8 6 is freely provided with a contact portion 3 8 8 for electrical connection with the electronic component. In the present invention, the abutment portion 382 is connected to one of the wing portions 33 ...: Two: The arm 386 is integrated with one of the wing portions 33: Type, hunting this force: Strengthening the whole of the contact section 38 Structural strength. The welding portion 36 is extended from the body 32 to the bottom a / by, λ, uu 0 0 ermenb bow, and an elongated neck is formed between the welding portion 36 and the book u 1 Q, 0 # h 日 "between the carcass 3 2 and a joint surface 3 6 2 that receives the solder ball. The connection part 36 is a solder ball 4 2 and a circuit board 4 〇 (Please

Page 9 200525824 V. Description of the invention (6) (see Figure 11). The solder ball. I you 丨 A A ^ n. ^ ^ ^ 4 d is after the socket connector 1 is inverted, and the partial edge of the soldering part 3 6 in the soldering part 3 x I is extended outward to the I surface 3 f 2 on. Its | balance part 37 is to attract tin; f; flat or slightly inclined L. Qing Kong 4 2 moves towards the balance part 37 to avoid being attracted to the body 3-1 due to gravity attraction. The solder ball is excessively moved to the body 3 22 due to gravity; == The good p ball can be evenly distributed to both ends, and is provided at the welding portion 36 and the balance portion 37 to reduce the movement to the body 3. In this case, the unidirectional shift of the solder ball is effectively improved, so that the solder paste distribution is more suitable. 1 The balance part 37 is basically for the purpose of providing the attraction of the solder ball. Only by using the neck of the terminal 30 to attract the solder ball can the solder ball be set in a balanced manner. Therefore, the balance portion 37 may be a horizontal plate-shaped body protruding outward from a local edge of the welding end 36 and located on the same plane as the joint surface 3 6 2 or slightly inclined as the neck, so When the solder ball is set, it can provide an attractive force opposite to the neck. The body 32 of the terminal 30 extends integrally upwards and has at least two bumps 3 5 on its outer edge 5. The bump 35 can be clamped above the corresponding limiting groove 22 of the corresponding insulating housing 10 to maintain the structural strength of the body 32 and ensure that the terminal 30 is positioned in an appropriate position. The lower bump 35 is disposed opposite the lower end of the contact section 38. When the end | sub 30 is inserted into the through hole 20 of the insulating housing 10, the body | 3 2 exerts a downward force and can withstand the force of the assembly, and it is not exerted by the contact section 38. And because the body 32 has the wings 35 extending obliquely on both sides, the invention can avoid the situation of broken pins when assembling the terminal 30.

200525824 V. Description of the invention (7) In addition to the terminal 30 being fixed by the wing portion 33, the terminal 30 can also be fixed to the corresponding insulating case 1 by the bump 3 5 on the body 32. The limit slot 22 of 0, and the contact section 38 of the terminal 30 can be accurately and firmly positioned at a proper position of the socket connector 1 and can accurately contact the pins of the electronic component. In the present invention, the contact section 38 of the terminal 30 is partially connected to the top of the wing section 33. Wherein, the abutment portion 3 8 2 of the contact section 3 8 bends a stop portion 3 8 4 to the outside, and the outer edge of the abutment portion 3 8 2 is slightly convex than the outer edge of the wing portion 3 3 below it. When the terminal 30 is inserted downwardly into the through hole 20 of the insulating housing 10, the stop portion 3 84 can stop the terminal 30 when the terminal 30 is inserted to a proper depth, so that the terminal can be stopped. Each part of 30 is positioned at an appropriate position. The insulating housing 10 is provided to match the contact section 38 of the terminal 30, wherein the limiting slot 22 is provided in parallel with the side wall of the through hole 20. The upper half of the through hole 20 cooperates with the contact section 38 and has an accommodation space 24 for the contact section 38 to elastically protrude upward. A platform 2 4 2 is formed on the bottom surface of the accommodation space 24. The abutting portion 3 8 2 is positioned thereon, and an inclined side 2 4 4 is provided for abutting the abutting portion 3 8 2 of the contact section 38. The side surface 2 4 4 is perpendicular to the bottom surface of the accommodating space 2 4 and is disposed at an obtuse angle with the limiting groove 22. One of the limiting grooves 2 2 still extends upwards for the protrusions 35 of the main body 32 to be locked therein. The blocking portion 3 8 4 which the abutting portion 3 8 2 is bent to the outside can increase the area of blocking on the platform 2 4 2. The contact portion 3 8 8 of each terminal 30 is exposed outside the through hole 20 of the insulating case 10. 3 per terminal

Page 11 200525824

5. Description of the invention (8) The top edge of the contact of '0. The contact part 3 of the part 3 8 8 see and bottom view. The outwardly extending body 3 2 of the solder ball 4 2 is moved, so that the flat 3 6 2 can be shaped toward the mating surface 3 6 2 to form an 'effective uniform' terminal connector 1 and electrical efficiency. The part 3 8 8 is blocked by the insulating case 1 on the stage 2 4 8 8 and is stopped at the eighth and ninth of which the terminal joint surface 3 6 is the balance part 37. The balance part is sucked by the welding part and the balance part 3 and the balance part 3 and the balance part improve the solder paste horizontal & keep a good road board 40. When the force is lowered, 0 or concave is provided in the through hole. On the platform 2 picture, the welding 2 ′, which is 30, and the flat welding, which is to make the melting 3 7 and the 36, move along 7. The reduction of tin 3 7 and the expansion and expansion of the situation, the uniform quality of the woman, the quality of the welding is stopped by the absolute number of the top 2 6 6. In the present invention, the solder balls of the terminating portion 36 and the welding portion 36 are not the body 32 and the large scale portion 37, and the soldering portion 3 paste is evenly applied to the body 3 2 so that the tin spacer can be effective, thereby improving the edge. The housing 10 should be at the contact edge, for the front view of the child, there is a partial edge that receives the partial edge excessively to the body. The joint surface of the molten solder paste 6 is located opposite to the body. The included angle of the end of the present invention that operates with a chip is slightly earlier, and the wing portion 3 3 and the body 3 2 are a wing portion 33 with a good shape of a V shape or a U shape, so that the body 3 2 and The 30 downward insertion group = strength fixing device can effectively bear the force of the through hole 20 of the terminal, and can be fixed to the insulating housing 1 0J 1 this slot 9 0 + please Figures '10 are the socket connector of the present invention 'after being matched with the tenth and the first and the terminal combination, respectively. The terminal of the present invention

200525824 V. Description of the invention (9) 〇 The contact section 38 is extended from the body 3 2 to the side, and the toilet

Incline: included angle. ; The soldering portion 36 of the terminal 3 is matched with the contact slave 38, and the contacting portion 36 is the lower part of the outer f contact section 38, and is placed at the center of the through hole 20. ^. ^ With the weight of the terminal 30, it can fall on the welding portion 36. μ 则 η $ ί f When the contact 3 8 € is pressed to the pin of the electronic component, "the bending of 1 f0, the soldering portion 36 can bear well. ^ J Furthermore, the insulating housing詨 2 in the through hole 20 of i 〇 can be used for positioning the abutment portion 3 8 2 of the contact section 3 8 and the f port 5 = 4 and the oblique side 2 4 4 is provided for the contact section. J: 部 3 8 2 抵 #, the insulating shell j 〇 can also bear the connection | down force. For the pins of the private components, please refer to the twelfth figure. A side view of the joint. The welded part 3 β of the A side @ & and its 钿 子部 部 3 7 has an adsorption force B that extends to the melted solder ball A 1 extending the equilibrium 丨Competing to make the solder ball: = gravity == 3 2 can move, and can be attached to the welding β ♦ a person excessively toward the body | the welding surface 3 Θ the joint surface 3 6 P σ appropriate position. Among them 1 4. The convex portion 364 can be increased by 4: = ::-setting-convex portion 3 ll is placed on the circuit board 40, and has the function of pushing the terminal into the socket connector | the solder ball 4 2 on the board 40. or = And, just in this circuit | form-a concave depression A. The depression It can be: people: 6 2 can also be set, which can also increase the area of welding and the large radian of ^ 442 to ensure good electrical conduction, 200525824 V. Description of the invention (ίο) It also has the terminal 30 calibrated and aligned The function of the solder ball 42 on the circuit board 40. The number of the protrusions or recesses is not limited to one, whereby the protrusions or recesses become a calibration device for the terminal 30. Please refer to the tenth The three figures are schematic diagrams of the stress of the terminals of the socket connector of the present invention. In the present invention, the abutment portion 3 8 2 of the contact section 38 is abutted against the oblique side surface 2 4 4 in the through hole 20. At the same time, the abutting portion 3 8 2 and the stopping portion 3 8 4 abut against the platform 2 4 2 to form a fulcrum. By the elasticity of the elastic arm 3 8 6, an upward elastic force can be effectively generated, so that The contact section 38 will not be excessively bent. The elastic arm 3 8 6 is bent and extended toward one side of the body 32 and then extended toward the other side of the body 32, so that the contact portion 3 8 8 When the force is applied, the fulcrum of the force is generally located at the middle position of the entire elastic arm 3 8 6 to reduce the length of the force arm, effectively reducing The torque generated by the downward force F of the pin of the electronic component has a good force balance effect. Under the same force, the torque received is small, and the damage to the terminal 30 is also small. On the other hand, due to the contact When the part 3 8 8 is pressed by force, it stops at the top edge of the insulating housing 10, that is, it stops at the upper platform 2 4 6. Therefore, the contact part 3 8 8 can ensure that it is exposed to the insulating shell. The through hole 20 of the body 10 maintains electrical contact with the pins of the electronic component outside, and the displacement D z in the Z-axis direction is limited to a predetermined range, so that the contact section 8 is not excessively bent. At the same time, the X-axis lateral displacement Dx of the contact portion 388 is also limited within a predetermined distance and does not deviate from the range of the pins of the electronic component. Therefore, the features and functions that can be generated by the present invention are organized as follows:

Page 14 200525824 V. Description of the invention (11) 1. When the terminal 30 is inserted into the through hole f of the insulating housing 20, the body 32 will exert a downward force, but not the contact section 38. < Avoid the situation of bee needles. Second, the bump 3 5 of the body 3 2 + recognition of β 4 mouth ... the limit slot 2 2 of the Shi Yi body i 0, the 4 =:: f should the contact ^ ^ 卞 the contact section] « f Position accurately and securely at the appropriate position of the socket connector ^, the angle between the wing portion 33 of the terminal 30 and the book, so that the body 32 and the wing Qiu Beiqi $ # 局 ， π 古》 & Change > 3 3 surface mountings with good structural strength, can effectively bear the end earlier / thinner than 30 when inserting the assembly force η when the edge is fixed f ::: Welding part 3 6 The contact section 38 is folded at an angle, and the tan joint 36 is disposed below the contact section 38 and is placed in the through hole 20 to a position ~. II The weight of the terminal 30 can fall on the soldering portion 6. V. The platform 242 and the 2 oblique sides and 2 4 4 in the through hole 20 of the insulating housing 10 can be used for the abutment part 3 8 2 of the contact section 3 8 and also bear the responsibility of electronic components. The pressing force of the feet has a good force balance effect. This connection has a calibration device that can increase the soldering area and ensure good electrical conduction, and has a balance portion that can attract the solder balls 4 2 and reduce offset. As detailed above, the present invention has indeed met the requirements of the invention patent, and the application submitted according to the law. The road disclosed on the page is only the preferred embodiment of the present invention, and it is not intended to limit the scope of rights of the present invention. , So the application scope according to the present invention

200525824 V. Description of the invention (12) Equal changes or modifications made within the scope of the present invention are still within the scope of the present invention. The reviewing committee should take time to review and look forward to granting patents early to encourage the invention.

Page 16 200525824 Brief description of the drawings [Schematic representation of the first picture: a front view of the terminals of the prior art socket connector. Second picture: a cross-sectional view of the terminals of the prior art socket connector assembled in the socket connector. The second picture is the bottom view of the socket connector and the terminal assembly of the present invention. The fourth picture is the enlarged view of the circled part in the picture (some of the through-holes are not assembled with terminals). Figure 5: An exploded perspective view of the socket connector terminal and a local socket connector of the present invention. Figure 6 is a perspective view of the socket connector terminal of the present invention. Figure 7 is a socket connector of the present invention and its connector. The three-dimensional combination of the terminal. The eighth figure is a front view of the terminal in the present invention. The ninth figure is a bottom view of the terminal in the present invention. The tenth figure is a perspective bottom view of the socket connector and the terminals of the present invention after being assembled. The tenth figure The thirteenth figure is the view of the present invention. This is the picture. This is the picture. Side view of Ming socket connector and its terminal assembly. Side view of Ming socket connector and its terminal assembly. Schematic diagram of the stress on the terminals of the Ming socket connector.

Page 17 200525824 Schematic description. [Knowledge] Terminal body contact part Socket connector through hole [Invention] Socket connector Insulation housing Through hole Limiting slot Receiving space Oblique side terminal body fixing device Bump welding part Joint surface calibration device Elastic arm circuit board solder ball 9 0 9 2 9 8 0 8 4 10 2 0 2 2 2 4 2 4 4 3 0 3 2 3 6 3 6 2 3 6 4 3 8 6 4 0 4 2 Welding part Engagement groove Platform contact part on the platform interference part balance part abutment part stop part contact part 8 4 2 4 2 2 4 6 3 7 3 8 3 8 2 3 8 4 3 8 8

Page 18

Claims (1)

200525824 VI. The scope of the patent application includes a type of socket connector, which is an insulator that connects the power supply element and the circuit board. It has a plurality of through-holes and a limiting slot; and /, / /, hundreds of terminals Each terminal is contained in the corresponding through hole, and each terminal includes a wing portion bent and protruding from both sides of the system to be fixed in the limiting groove, and a flexible contact portion is provided in the body. One side is in electrical contact with the electronic component; and a soldering portion is bent downward from the body and extends to form a joint surface for receiving solder balls. 2. The socket connector according to item 1 of the scope of patent application, wherein the main body is provided with at least one bump to interfere with the inner wall of the limiting slot. 3. The socket connector according to item 1 of the scope of patent application, wherein each terminal includes an abutting portion extending laterally and obliquely from the body, and an elastic arm is formed by a top of the abutting portion facing the body. The side is bent and then bent to the other side of the body in the opposite direction; wherein the contact portion is provided at the free end of the elastic arm. 4. The socket connector according to item 3 of the scope of patent application, wherein the abutting portion is connected to the top of one of the wing portions, and the elastic arm is integrally connected to one of the wing portions. 5. The socket connector according to item 4 of the scope of patent application, wherein the upper half of the through hole has a receiving space for the elastic arm to extend upward, a platform is formed on the bottom surface of the receiving space, and An oblique side is disposed on one side of the accommodating space, and a bottom end of the abutting portion abuts against the platform, and one side of the abutting portion abuts on the oblique side. Page 19 200525824 6. Scope of patent application 6. The socket connector according to item 5 of the scope of patent application, wherein the abutting portion is a stop portion bent to increase the area of abutment against the platform. 7. The socket connector according to item 1 of the scope of patent application, wherein the contact portion of each terminal is exposed outside the through hole of the insulating housing. 8. The socket connector described in item 1 of the scope of patent application: when the contact portion of each terminal is pressed down by force, it stops at the top edge of the insulating housing. 9. The socket connector according to item 8 of the scope of patent application, wherein the insulating housing is recessed with a plurality of upper platforms corresponding to the contact portions on the top edge of the through hole for the contact portion Stop at the upper platform. 10, The socket connector according to item 1 of the scope of patent application, wherein the wing portion is at an angle with the body. 1 1. The socket connector according to item 1 of the scope of patent application, wherein interference portions are formed on both sides of the wing portion to be clamped to the inner wall of the limiting slot ^. 1 2. The socket connector according to item 1 of the scope of patent application, a partial edge of the soldering portion of each terminal of the terminal extends a horizontal or diagonally inclined balance portion, the balance portion is generally opposite to the body . / ° Tilt 1 3, The socket connector described in item 1 of the scope of the patent application, the soldering portion of the complex δH terminal is bent with the contact portion to bend a predetermined angle of production, below the middle. The contact 14 is the socket connector end described in the first paragraph of the patent application. Wherein, the soldering part is formed with a soldering surface for receiving solder balls to be electrically connected ', and the bonding surface is formed with a calibration device. Electricity Page 20 200525824 VI. Scope of Patent Application One sub- 'The calibration device is a convex convex part or a concave concave hole. 16. A socket connector, comprising: an insulating housing having a plurality of through-holes therethrough, the through-holes having a limiting slot; and a plurality of terminals received in the corresponding through-holes, each A terminal includes a system that engages in the limiting slot, an abutment portion extends diagonally from the body, and an elastic arm is bent and extended from the side of the abutment portion facing the body, and then reversed. Bending to the other side of the body, a contact portion is formed at the free end of the elastic arm, and a soldering portion is bent and extended from the bottom end of the body to be soldered to a circuit board. 17. The socket connector according to item 16 of the patent scope of Shenyan, wherein the main body is provided with at least one bump to interfere with the inner wall of the limiting groove. 18. The socket connector according to item 16 of the scope of patent application, wherein each terminal further includes a pair of wings attached to both sides of the body and engaged in the limiting groove. 19. The socket connector according to item 18 of the scope of patent application, wherein the wing portion is bent and protruded from both sides of the body to form a central angle with the body. 20. The socket connector according to item 19 of the scope of patent application, wherein the abutting portion is connected to the top of one of the wing portions, and the elastic arm is integrally connected to one of the wing portions. One. 2 1. The socket connector described in item 18 of the scope of patent application, wherein an interference portion is formed on the outer side of the wing pair to be clamped to the inner wall surface of the limiting groove. 02. 16 The socket connector according to item 6, which Page 21 200525824 : The upper half of the through 1L has a -receiving space for the elastic arm to extend upwardly ΓΓ the bottom of the accommodating space, and an oblique side 丄, and wherein the bottom end of the abutting portion abuts against the ten = 忒 罪 罪One of the sides of 卩 abuts against the oblique side. Φ H ί The socket connection described in Item 22 of the scope of patent application, and ΓΠΠϊ A stop to increase the abutment on the platform: Product :, Mid-end ΪΙί The scope of the socket connection described in Item 16 ^ 1 4 ΐ 卩 is outside the through hole of the insulation case. Mid-end; the sockets described in item 16 of Li Fan㈣ * ... the top edge. Waiting is stopped in the insulating case :: rim;:; special !!; The socket connector described in item 25, which has a number of Yu Xi, Wu i i An upper platform corresponding to the contact portion, =, the top edge of the hole, for the contact portion to stop at the upper platform. / I. The socket connection ^ described in item 16 of the scope of patent application, where the local edge of the A welding portion extends outwards in a horizontal or inclined upward balance P The balance portion is generally opposite the body. 28. The socket connector as described in item 16 of the scope of patent application, wherein the soldering portion of the terminal cooperates with the contact portion to bend a predetermined angle below the contact portion. 29. The socket connector as described in the scope of patent application (6), wherein the soldering portion is formed with a joint surface for receiving solder balls to be electrically connected to the circuit board, and the joint surface is formed with a calibration device. 30. The socket connector described in item 16 of the scope of patent application, which 200525824 6. In the scope of patent application, the calibration device is a convex convex part or concave concave hole Page 23