TW200537771A - Structure and engineering method of joint connection of solder ball for electric connector - Google Patents

Abstract

This invention provides a structure and an engineering method of joint connection of solder ball for electric connector, which includes the following steps: providing a base seat installed with a plurality of terminal troughs arranged at intervals; providing a plurality of terminals installed within the plurality of terminal troughs where the one end of terminal is equipped with a contact part, while the other end is installed with a vertical connecting piece, which is equipped with a protruding bulge; providing a plurality of solder balls, each of which is made connected to the bulge of connecting piece of the terminal; and providing heating to soften each of the solder balls to make the bulge of connecting piece of the terminal embedded into solder balls.

Description

200537771 V. Description of the invention (1) The technical field of the invention, in particular, refers to an electrical connection. The present invention relates to an overlapped solder ball structure of an electrical 4 妾 g device and its construction method. σ Prior technology Please refer to FIG. 1, which is a build of a conventional electrical connector, which includes a body 10 and a plurality of tin surface structures Zhao Xiqian; sowing! # 批 数 之 钿 子 15, the base U is provided with a plurality of 槽子 槽 11, the plurality of terminals 15 are provided at one end of the plurality of terminals provided with a contact portion 16, the other groove of the terminal ^ flat plate ... The connecting piece 17 is recessed in the middle to form a cup body, which is provided with 1 y. The above structure has the following defects ... 1. It is coated with solder paste on the connecting piece 17, and then the solder ball 19 is placed on it. After t = solder ball 19, it is combined with the connecting piece 17, which is only dissolved by the solder paste. For this connecting piece 17, a very strong bonding effect has not been achieved. 2. The lower end of the solder ball 19 is welded to the horizontal connection channel. Because the weld point is below, so that it is easy to be heated during heating, the base body 10 cannot be provided with a peripheral wall around the solder ball 9 to locate the solder ball. (If there is a peripheral wall, it will block heat, which is not conducive to heating and melting.) 'Only the connecting piece 丨 7 is slightly concave in the middle and a cup is placed on it, and 2 solder balls are placed on it. Especially when the solder ball contacts of the connector are denser, the smaller the cup of the solder ball and the connecting piece is, the more the poor positioning effect of the solder ball placed on the connecting piece 7 appears. 3 · There is no barrier around each solder ball. When the solder ball gap is very small, it is adjacent to each other.

200537771 V. Description of the invention (2) The solder balls may come into contact and cause a short circuit. SUMMARY The main purpose of this hair month is to provide an electrical post structure, which can make the solder balls of the two terminals overlap. One of the main purposes is to provide an electric solder ball method, which can make the connection of the terminals | The secondary purpose of the present invention, which is stable in kicking the ball, is to provide a mouthful structure. The overlap of the I f X tu connector of the solder ball. When the soldier puts the solder ball, the solder ball can be received around the temple.胂 阁 a can be firmly positioned. "Door door" goes to the base and surrounds it: the purpose is to provide a method of overlapping solder balls of an electrical connector, which is a side overlapping solder ball, which is easy to be heated during heating and not caused by tin. The perimeter of the ball is surrounded by the base and is hardly heated. In order to achieve the above object, the method for laminating solder balls of the electrical connector of the present invention includes the following steps: providing a base body with a plurality of terminal slots arranged at intervals; and providing a plurality of terminals provided on the plurality of terminals. Terminal slot, one end of the terminal is provided with a contact portion, and the other end of the terminal is provided with a connecting piece, the connecting piece is provided with a protruding convex portion; a plurality of solder balls are provided, and each solder ball is connected to a terminal connecting piece. The bumps are in contact; and heating is provided to soften each solder ball so that the bumps of the connecting pieces of the terminal are embedded in the solder balls. The above and other objects, advantages, and features of the present invention will be more clearly understood from the following detailed description of the preferred embodiments with reference to the accompanying drawings.

Page 6 200537771 V. Description of the invention (3) Please refer to FIG. 2 and FIG. 3 for implementation. The electrical connector of the present invention is provided with a body 20, a plurality of terminals 30, and a plurality of solder balls 40, of which: the base body A plurality of terminal grooves 21 are arranged at 20 intervals. The terminal groove 21 is provided with a bottom surface 22 ′, and the other end of the bottom surface 22 forms a solder ball groove 23. Please refer to FIG. 5. The plurality of terminals 30 are provided in the plurality of terminal slots 21. The terminal is provided with a fixing portion 31 fixed to the terminal slot 21, and the fixing portion 31 is provided above the terminal slot to be elastically movable up and down. Of contact 32,

A connecting piece 33 extends below the fixing portion 31 toward the lower end of the terminal groove. The connecting piece 33 extends to the solder ball groove 23 and has the elasticity of lateral elasticity. The connecting piece 33 is punched from the surface of the plate to two sides near the end. The protruding convex portion 34 is formed into a barbed shape, and is provided with a guide inclined surface 35 and a latching surface 36. The solder ball 40 is inserted into the solder ball groove 23, and the solder ball 40 presses against the convex portion 34 of the connecting piece 33 to make the connecting piece elastically expand. Please refer to FIG. 4, when the solder ball is softened by heating, the terminal The connecting piece 33 causes the convex portion 34 to be embedded in the solder ball 40 due to the restoring force. Please refer to FIG. 2 and FIG. 3, the construction method of the above structure includes the following steps: Two * Provide a body 20 'on which a plurality of terminal slots 21 are arranged at intervals. The terminal slot 21 is provided with a bottom surface 22 and the other end of the bottom surface 22 Forming a solder ball groove 23. > A plurality of terminals 30 are provided, which are provided in the plurality of terminal slots 21. The terminal a has a fixing portion 31 fixed to the terminal slot 21. A fixed portion 31 is provided below the terminal slot to an upper end of the terminal slot. The contact portion 32 is provided with a connecting piece 33 extending below the fixing portion toward the lower end of the terminal slot. The connecting piece 33

200537771 Five 'invention description (4) The elasticity extends to the solder ball groove 23 longitudinally and has the elasticity of lateral elasticity. The connecting piece 33 is close to the convex portion 34 which is punched from the plate surface and protrudes laterally. 34 into a barbed shape, which is provided with a guide inclined surface 35 and a clamping surface 36. Provide a plurality of solder balls 40, and place each solder ball 40 in a solder ball groove 23 along the guide inclined surface 35 of the convex portion 34 of the connecting piece 33, and the solder ball 40 is pressed against the convexity of the connecting piece 33 on one side. The portion 34 elastically flares the connecting piece. Please refer to FIG. 4, heating is provided to soften each solder ball 40. The connection piece 33 of the terminal causes the convex portion 34 to be embedded in the solder ball 40 due to the restoring force, so that the solder ball can be firmly combined with the connection piece of the terminal. 3 3 of the longitudinal plate surface. In addition, please refer to FIG. 6, this embodiment provides that the base body 20 can be placed at about 75 degrees from the horizontal surface when heated, so that each part of the solder ball 40 can flow to the connecting piece 33 of the terminal when hot-melted. It further strengthens the fusion effect of the two and will not affect the height of the solder ball 40 (if the solder ball 40 melts up and down, it will sink like ice cream). Furthermore, the base 20 and the horizontal plane are still less than 90 degrees. The solder ball 40 does not fall out of the solder ball groove due to vibration or melting. X From the above description, the present invention can summarize the following advantages: The convex portion 34 of the connecting piece 33 of the one-person terminal 30 is embedded in the solder ball 40 Inside, the two are firmly consolidated 2. The convex portion 34 is embedded into the solder ball 40 laterally, so that the solder ball 40 cannot be separated, and the lateral direction of the solder ball 40 is limited by the frame of the solder ball groove 23, so The connection of the connecting piece 33 is very strong, and there is a ^ gap between the two solder balls 4 () to avoid short circuits caused by contact. I slot 3 · The connecting piece 3 3 has lateral elasticity, and the convex portion 34 can be inserted due to the elastic restoring force Surface softened solder balls.

200537771 V. Description of the invention (5) Please refer to FIG. 7, which is the second embodiment of the present invention. The method includes the following steps: ^ Provide a body 20 ′ with a plurality of terminal grooves 21 arranged at intervals thereon. A bottom surface 22 is provided, and a solder ball groove 23 is formed at the other end of the bottom surface 22. A plurality of terminals 30 are provided in the plurality of terminal grooves 21, and the terminal is provided with a fixing portion 31 fixed to the terminal groove 21, and the fixing portion A contact portion 32 is provided underneath 31 to the upper end of the terminal slot. The contact portion 32 can be moved up and down below the fixed portion 31. A connecting piece 33 is extended to the lower end of the terminal slot. The connecting piece 33 extends longitudinally to the solder ball groove 2 3 And has the elasticity of lateral elasticity, the connecting piece 3 3 is near the end punched out from the middle of the plate surface, and a convex portion 34 protruding to one side is formed. The convex portion 34 is in a tongue shape, and only one end thereof is connected to the connecting piece 33. . A plurality of solder balls 40 are provided, and each solder ball 40 is placed in a solder ball groove 23 in a relaxed state. Referring to FIG. 8, the seat body is inclined at 45 degrees, so that the solder ball 40 is pressed against the convex portion 34 of the connecting piece 33 by the gravity of the solder ball 40, and the solder ball groove 23 is not dropped. Referring to FIG. 9, heating is provided to soften each solder ball 40. At this time, the solder ball is pressed on the connection piece 33 of the terminal due to its own gravity, so the convex portion 34 is embedded in the solder ball 40, and the molten solder will The gap 37 between the connecting piece 33 and the convex portion is penetrated. In this embodiment, since the solder ball 40 is loosely inserted into the solder ball groove 23, it is easier to place the solder ball 40. When the solder ball 40 is combined with the connecting piece 33, the up and down direction of the solder ball 40 can be the convex portion 34 card. As the molten tin penetrates into the gap 37, its left-right direction is also locked, so the connection between the solder ball and the connecting piece 33 can be very firm.

Page 9 200537771

Please refer to FIG. 10 and FIG. 11, which are the first and second steps of the present invention, including the following steps: The second embodiment of the method, the method of which is described below, the table below is provided with a lateral downward spring, a convex with a side out to form a supply The peripheral edge of the surface of the base 20 is provided with a plurality of fixed portions 31, 38, the horizontal contact portion 3 2 connecting piece 33, and the elastic portion 3 4 ^ the convex gap 37. 'Flanges 2 4 are arranged at intervals thereon to form a child 3 〇' It is provided in the connection with the terminal groove 21 fixed to the plate 3 8 'The connecting piece 33 is vertical under the fixing portion 31' The connecting piece 33 is The part 34 is provided with a slanting channel, a terminal slot 21, and a placement area 25. The plurality of terminal grooves 21, the end two, the fixed portion 31, the upper part of the terminal groove, and the upper part of the terminal groove can be extended upward to the lower end of the terminal groove to the placement area 25, and the end is bent to form two lateral surfaces 35 and A jig 45 is provided between the connecting pieces 33, and the jig 45 fits in the placement area 25 on the lower surface of the base body 20, and is provided with a plurality of lattices 46, and the plurality of lattices correspond to the plurality of terminal slots. twenty one. Provide a plurality of solder balls 40 ′. Each solder ball 40 is placed in a grid 46 along the guide slope 35 of the convex portion 34 of the connecting piece 33. The lower end of the solder ball 40 abuts the lateral plate 38 of the terminal and one side abuts. Pressing the convex portion 34 of the connecting piece 33 causes the connecting piece 33 to elastically expand. Referring to FIG. 12, heating is provided to soften each solder ball 40. The connection piece 33 of the terminal causes the convex portion 34 to enter the solder ball 40 due to the restoring force, and the molten tin also invades the gap 37, so The solder ball 40 is firmly bonded to the longitudinal plate surface of the connecting piece 33 of the terminal. Please refer to Figure 1 3, and finally remove the fixture 4 5 at this time, the solder ball 4 0 is stable.

Page 10 200537771 V. Description of the invention (7) The connecting piece 33 connected to the terminal. Please refer to FIG. 14, which is a fourth embodiment of the present invention, which is substantially the same as the first embodiment, and the difference lies in the terminal slot 2 1 of the seat body 20-a side wall is provided with a card slot 26, and the terminal 30 is The sheet body extends longitudinally up and down, and a fixing portion 31 is engaged with the card slot 26 in the middle, and a contact portion 32 extends above the terminal slot, and a connection piece 33 extends below the terminal slot. "

Please refer to FIG. 15, which is a fifth embodiment of the present invention, which is substantially the same as the first embodiment. The difference is that the connecting piece 33 of the terminal 30 has abutted against a wall surface of the solder ball groove 23. Elasticity, the solder ball is forced into the bump 34 of the connecting piece 33 of the pressing terminal 30 when it is placed. Please refer to FIG. 16. When heating is provided, the solder ball 40 is softened, and the connecting piece 33 of the terminal is softened. The protrusions 34 enter the solder balls 40 at the age. The connecting piece 33 of the terminal of the present invention is provided with a convex portion 3 4 embedded in the solder ball 40, which should already have a good bonding effect. However, if the bonding of the solder ball 40 is to be stronger, it can be used to connect the 3 3 The end is coated with solder paste. After heating, the solder paste is melted and bonded to the connecting piece 33 and the solder ball 40, so that the combination of the two can be strengthened.

The specific embodiments proposed in the detailed description of the preferred embodiments are only for easy explanation of the technical content of the present invention, and do not limit the present invention to the embodiment in a narrow sense. 'Without exceeding the spirit of the present invention and the following patent application The scope of the situation can be implemented in various changes.

Page 11 200537771 Brief description of the drawings Figure 1 is a perspective view of the first electric soldering ball of the present invention. Figure 2 is a perspective view of the first solder ball of the present invention. Fig. 3 is a perspective view of a second embodiment of the present invention before heating. Fig. 4 is a side sectional view before the first heat of the present invention. Fig. 5 is a cross section Ξ of the present invention. Fig. 7 is a side sectional view of the present invention: the second embodiment is placed obliquely and heated, and Fig. 8 is a side sectional view of the m embodiment of the present invention before it is heated. . Illustration. Figure 9 is a side view of the second preferred embodiment of the present invention. Figure η is a perspective view of a preferred embodiment before heating. ′, The side of the second preferred embodiment before heating & q s _ Fig. 12 is a drawing of the present invention 筮 -h u ~ training and greeting. FIG. 13 is a side cross-sectional view of Tailu Nichi Comparative Example after heating. U ίΪSide view of the third preferred embodiment after heating. FIG. 14 is a side cross-sectional view of the fourth preferred embodiment of the present invention after the heat treatment. Fig. 15 is a side sectional view of a fifth preferred embodiment of the present invention before heating. FIG. 16 is a side sectional view of a fifth preferred embodiment of the present invention after heating. Reference sign description Terminal slot 21 Bottom surface 22 Solder ball slot 2 3 Placement area 25 Card slot 26 Fixing portion 31 Contact portion 3 2 Connecting piece 33 Guide slope 35 Card surface 36 Clearance 37 Solder ball 40 Fixture 4 5 Lattice 46 Seat 2 0 Convex Edge 24 Terminal 30 Projection 34 Loose plate 3 8

Page 12

Claims (1)

200537771 6. Scope of patent application 1. A solder ball structure of an electrical connector, the electrical connector is provided with a body and a plurality of terminals, the base body is provided with a plurality of terminal slots, and the plurality of terminals are provided in the plurality A terminal slot, one end of the terminal is provided with a contact portion, and the other end of the terminal is provided with a connection piece, which is soldered with a solder ball; characterized in that the connection piece of the terminal is provided with a convex portion embedded in the solder ball. 2 · The overlapped solder ball structure of the electrical connector as described in item 1 of the scope of the patent application, wherein the convex portion of the connection piece of the terminal is formed into a barbed shape, which is provided with a guide slope and-^ surface. 3. The overlapping solder ball structure of the electrical connector according to item 1 of the scope of the patent application, wherein the convex portion of the connecting piece of the terminal is disposed near the end of the connecting piece. 4. The overlapping solder ball structure of the electrical connector according to item 1 of the scope of the patent application, wherein the terminal groove is provided with a bottom surface, and the other end of the bottom surface forms a solder ball groove to insert the solder ball. The connecting piece extends to the solder ball groove and is soldered with the solder ball. 5. The overlapping solder ball structure of the electrical connector according to item 1 of the scope of the patent application, wherein the convex portion of the connecting piece of the terminal is protruded from the connecting piece by stamping. 6- The overlapping solder ball structure of the electrical connector according to item 1 of the scope of the patent application, wherein the convex portion of the connecting piece of the terminal is formed by bending the end of the connecting piece. 7 · The overlapped solder ball structure of the electrical connector according to item 1 of the scope of the patent application, wherein the connecting piece of the terminal is longitudinal, and the convex portion protrudes laterally. S. A method of bonding solder balls for an electrical connector, comprising the following steps: 200537771 6. The scope of the patent application provides a body with a plurality of terminal slots arranged at intervals. A plurality of terminals are provided in the plurality of terminal slots. One end of the terminal is provided with a contact portion, and the other end of the terminal is provided with a A connecting piece provided with a protruding convex part; providing a plurality of solder balls to contact each solder ball with a convex part of a terminal piece; and providing heating to soften each solder ball to make the terminal The convex part of the connecting piece is lost into the solder ball. 9. The method of lapping solder balls of the electrical connector according to item 8 of the scope of the patent application, wherein the connection piece of the terminal is longitudinal and elastic, the protrusions are protruding sideways, and the solder balls press against the connection The convex part of the sheet makes the connecting sheet elastically expand. After the solder ball is softened by heating, the connecting part of the terminal causes the convex part to enter the solder ball due to the restoring force. 10. As described in item 8 of the scope of the patent application, the method of lapping solder ball L of an electrical connector, wherein when heating, the seat body is inclined at a 40 ° from the horizontal plane, so that the solder ball is pressed against the gravity by its own gravity. On the convex portion of the connecting piece, when the solder ball is softened by heat, the convex portion of the connecting piece of the terminal is embedded into the solder ball due to gravity. According to the solder ball method of the electric connection device described in item 8 or item 9 or item 10 of the scope of the patent application, the terminal groove is provided with a bottom surface, and a solder ball groove is formed at the other end of the bottom surface to be inserted into the terminal groove. Solder ball, the connecting piece of the terminal to the solder ball groove is in contact with the solder ball. ^ • As described in item 8 of the scope of the patent application, the soldering joint of the electrical connector ′ wherein the connection portion of the terminal is a barbed shape, which is provided with a guide slope and a card surface. 200537771 6. Scope of patent application 13. Faucet 14. Facilitation 15. Facheng is a solder ball maker for electrical connectors described in Item 8 of the scope of patent application, where the convex part of the connecting piece of the terminal is set close to The last two items of the connection piece: the convexity of the overlapped solder ball piece of the two connectors is embossed by the stamping of the connection piece, such as the overlap of the electrical connector of the connection piece of the terminal.锡 球 工 # is bent by the end of the connecting piece