JP3074001U - Connector terminal - Google Patents

Abstract

(57) Abstract: An LGP connector terminal used to connect a chip module to a substrate and preventing rotation due to uneven rotation moment of the terminal. A connector terminal includes a welded portion, a holding portion, and a suspension arm, the welded portion is bonded to a contact pad of a substrate by surface mounting technology, the holding portion is held in an insulating body, and the suspension arm is a welded portion. At least one projection is formed extending obliquely upward from one end of the body, and at least one projection is formed vertically outward from the weld or laterally outward from both sides of the weld. The terminal is characterized in that the terminal rotation moment is balanced and the terminal weld is prevented from being separated from the contact pad, so that the stability of the electric signal transmission is ensured.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a type of connector terminal, and more particularly, to a terminal of an LGP (Land Grid Package) type connector used for connecting a chip module to a substrate and preventing rotation due to uneven rotation moment of the terminal.

[0002]

[Prior art]

 Due to the development of the computer industry, the structure of parts such as CPU, chip module and connector is becoming more and more complex, and its functions are becoming more and more powerful. Therefore, the accuracy and reliability of the connection between parts are becoming higher. Has become. To match the performance demands of CPUs, chip modules and boards, most of the connector terminals connected to them are high-density matrix type signal terminals, and BGA is widely used in the industry at present. However, the cost of connecting a CPU, a chip module, and a board to a known connector using the BGA method is relatively high, which is inconvenient for production, and the connector occupies a relatively large volume due to the relatively high welding height of the connector. It was big. Therefore, the industry has also introduced the LGP type chip module packaging scheme, and well-known related technologies include US Patent Nos. 4,553,192 and 5,395,252. As shown in FIG. 10, according to the related art, the chip module 17 has the contact pads 20 on its lower surface, the substrate 15 has the contact pads 37 on its upper surface, and the terminals 14 are It is substantially U-shaped and comprises one upper arm 26 and one lower arm 27, the end of the lower arm 27 being bent to form one weld 28 and surface mounted on the contact pad 37 of the substrate 15, The contact pad 20 and the upper arm 26 of the chip module 17 transmit an electric signal through the contact portion 32.

However, the terminals 14 are only slightly mounted on the contact pads 37 on the substrate 15, and the strength of the welding structure is not large, and the constant temperature generated by the operation of the CPU lowers the strength of the welding structure. In addition, the upper arm 26 of the terminal receives the lower pressure of the chip module 17 and the insulating body (not shown) of the connector receives the lower pressure of the chip module and moves downward, and the terminal 14 moves on the contact pad 37 of the substrate 15. The weld 28 was very easily separated from the contact pad 37 on the substrate 15 to receive the counterclockwise rotation moment. Further, the insulating body (not shown) of the connector is moved downward by receiving the lower pressure of the chip module 17, thereby causing deformation of the terminal 14, and the contact point 32, the contact portion 32 and the chip module 17 are deformed. Variations occur in the contact force between the contact pads 20, which causes poor contact between the chip module 17 and the terminals 14, which prevents the stability of electric signal transmission from being ensured. A misalignment occurred, disconnecting the chip module 17 from the substrate 15 and causing the system to expire.

[0004]

[Problems to be solved by the invention]

 An object of the present invention is to provide a kind of connector terminal for connecting a chip module to a substrate, and the terminal has a structure for preventing rotation of the terminal due to non-uniform rotation moment. The moment shall be balanced and the terminal welding shall be prevented from peeling off from the contact pad, and the stability of electric signal transmission shall be ensured.

[0005]

[Means for Solving the Problems]

 The invention according to claim 1 is a connector terminal assembled on an insulating body to achieve an electrical connection, comprising: a welding portion connected to a substrate and having an extension portion formed by extension; A suspension arm extending from another end and having a contact portion at one end for contacting another electronic element, and a suitable length protruding outward from a peripheral position of the welded portion and fitted at a corresponding position on the insulating body. The connector terminal is provided with a protruding portion to be provided. According to a second aspect of the present invention, in the connector terminal according to the first aspect, the connector terminal has one holding portion, and the holding portion is provided on the extending portion to hold the connector terminal in the insulating main body. Connector terminals. According to a third aspect of the present invention, in the connector terminal according to the first or second aspect, the protruding portion protrudes outward in a vertical direction from the welded portion, and is fitted into the corresponding locking groove of the insulating body. The connector terminal is characterized in that: According to a fourth aspect of the present invention, in the connector terminal according to the first or second aspect, the protruding portions protrude laterally outward from both sides of the welded portion, and are fitted into corresponding engaging grooves of the insulating body. The connector terminal is characterized in that the connector terminal is provided. The invention as claimed in claim 5, wherein a connector positioned between two circuit elements having an electrical signal contact surface to achieve electrical signal connection, comprising: an insulating body having at least one terminal receiving groove; A welded portion connected to one circuit element, and a suspension arm extending from one end of the welded portion and having a contact portion at one end. And a protrusion protruding outward from the peripheral position of the welded portion as appropriate and being fitted to a corresponding position of the insulating body. The invention according to claim 6 is the connector according to claim 5, wherein the two circuit elements are a chip module and a substrate, and contact pads are provided on the chip module and the substrate. . According to a seventh aspect of the present invention, there is provided the connector according to the fifth aspect, wherein the two circuit elements are formed on two substrates, and contact pads are provided on the substrates. The invention according to claim 8 is the connector according to claim 6 or 7, wherein the insulating body includes a base and a plurality of terminal receiving grooves, the base has a substantially rectangular shape, and the plurality of terminal receiving grooves. The connector is characterized in that it has a vertically elongated groove passing through the base. According to a ninth aspect of the present invention, there is provided the connector according to the eighth aspect, wherein the plurality of terminal accommodating grooves exhibit a grid-like distribution and are distributed corresponding to the contact pads of the substrate. According to a tenth aspect of the present invention, in the connector according to the ninth aspect, the plurality of terminal receiving grooves include a first side wall and a second side wall, and both sides of the terminal receiving groove at a boundary portion between the first side wall and the second side wall. A concave groove is formed toward the base for accommodating the holding portion of the connector terminal, and a locking groove is provided in a longitudinal direction of the base toward the inside of the base at a position near the base bottom surface on the other side of the second side wall. The connector is characterized by accommodating the projecting portion of the connector terminal. The invention according to claim 11 is characterized in that in the connector according to claim 10, the projecting portion of the connector terminal projects vertically and outwardly from the welded portion, and is fitted in the corresponding locking groove of the insulating body. And the connector. According to a twelfth aspect of the present invention, in the connector according to the ninth aspect, the plurality of terminal accommodating grooves are provided on the first side wall and the second side wall, and the terminal accommodating groove is formed at a boundary between the first and second side walls. Concave grooves are formed on both sides to accommodate the holding portion of the connector terminal, and a locking groove is provided in a portion of the second side wall close to the base bottom surface on the other side in the lateral direction toward the inside of the base. The connector is characterized by accommodating the projecting portion of the connector terminal. According to a thirteenth aspect of the present invention, in the connector according to the twelfth aspect, the projecting portion of the connector terminal projects laterally and outwardly from both sides of the welded portion, and is fitted into a corresponding locking groove of the insulating body. And the connector.

[0006]

[Embodiment of the invention]

 The connector terminal of the present invention includes a welded portion, a holding portion, and a suspension arm, the welded portion is bonded to a contact pad of the board by surface mounting technology, the holding portion is held in the insulating body, and the suspension arm is a welded portion. A connector terminal that is formed to extend obliquely upward from one end of the chip module and has one contact portion provided at the end of the suspension arm to contact the contact pad of the chip module. At least one projecting portion is formed outwardly or laterally outward from both sides of the welded portion, and the connector terminal is to be locked in the locking groove of the corresponding insulating body.

[0007] According to the features of the present invention described above, the effect of the protrusion not only increases the welding area of the welded portion and increases the strength of the welded structure, but also balances the rotational moment applied to the welded portion. In addition, the welding arm is prevented from peeling from the contact pad of the substrate, and the suspension arm is prevented from being deformed or distorted due to the deformation of the welding portion. The contact pad of the chip module does not shift, and the stability of electric signal transmission can be secured.

[0008]

【Example】

 FIG. 1 shows a first embodiment of a connector terminal according to the present invention. The terminal 1 has a V-shaped elastic structure, has one welded portion 10, and the welded portion 10 makes contact with a substrate 800 by surface mounting technology. One end of the welded portion 10 is extended obliquely upward to form a horizontal extending portion 23, and upright holding portions 25 are provided on both ends of the extending portion 23 to form a concave portion of the insulating body 3. It is held in the groove 310 (see FIG. 2). The other end of the welded portion 10 is bent obliquely upward to form one suspension arm 21 by extension, and the end of the suspension arm 21 is bent to provide one contact portion 22 so as to be in contact with the contact pad 430 of the chip module 550. 4 (see FIG. 4), and projecting portions 50 are formed vertically outward from both sides of the connecting portion between the welding portion 10 and the suspension arm 21, and the projecting portions 50 correspond to the locking grooves of the base 400 of the insulating main body 3. It is locked in 350 (see FIG. 4).

FIGS. 2 and 3 show an insulating body 3 installed corresponding to the first embodiment of the connector terminal of the present invention. The insulating body 3 includes a substantially rectangular base 400 and the base 400. It has a plurality of terminal receiving grooves 300 penetrating therethrough, the terminal receiving grooves 300 exhibit a grid-like distribution on the base 400 and are distributed corresponding to the contact pads 430 of the chip module 550 (see FIG. 4). The contact part 430 and the contact part 22 of the terminal 1 transmit an electric signal. Each one of the terminal receiving grooves 300 has a substantially elongated open groove shape, and has a first side wall 380 and a second side wall 330, and the terminal receiving groove 300 is formed at a boundary portion between the first side wall 380 and the second side wall 330. One concave groove 310 is opened toward each side to accommodate the holding portion 25 of the terminal 1, and the terminal receiving groove 300 is formed in a portion of the second side wall 330 near the bottom surface 24 of the base 10 on the other side. A locking groove 350 is provided along the longitudinal direction of the terminal 1 to accommodate the protrusion 50 of the terminal 1.

FIG. 5 shows a second embodiment of the connector terminal of the present invention, which is different from the first embodiment in that the terminal 2 has a laterally outwardly protruding terminal 1 from both sides of the welded portion 100. The protrusions 60 are located in the corresponding locking grooves 460 of the base 40 of the insulating body 4 (see FIG. 7).

FIGS. 6 to 8 show a third embodiment of the present invention. In the third embodiment, an insulating body 4 is provided corresponding to the terminal 2 of the second embodiment of the present invention. The difference between this and the insulating body 3 is the difference in the installation position of the locking groove. Each one of the terminal receiving grooves 30 is formed as a slightly elongated groove, and a first side wall 38 and a second side wall 33 are provided therein. A pair of locking portions 46 are provided inside the terminal receiving groove 30 at the first side wall 38. One locking groove 460 is provided laterally in the first side wall 38 of the terminal receiving groove 30 below the locking portion 46 to receive the projecting portion 60 of the terminal 2 (FIG. 9). reference).

[0012]

[Effect of the invention]

 The action of the projections 50, 60 not only increases the welding area of the welds 10, 100 to increase the strength of the welded structure, but also allows the projections 50, 60 to correspond to the corresponding locking grooves of the insulating bodies 3, 4. Locked in 350, 460, it produces a resistive rotational moment opposite the tendency of terminals 1, 2 to rotate, thereby balancing the rotational moment applied to welds 10, 100 and allowing welds 10, 100 This prevents the substrate from peeling off from the contact pads, and also prevents the suspension arms 21 and 210 from being deformed or distorted due to the deformation of the welded portions 10 and 100, thereby ensuring the consistency of the contact force. As a result, the contact portions 22 and 220 of the terminals 1 and 2 and the contact pads 43 and 430 of the chip modules 55 and 550 do not shift, and the stability of electric signal transmission is ensured. .

[0013] Taken together, the present invention surely meets the requirements for utility model registration. The above description relates to a preferred embodiment of the present invention and does not limit the scope of the present invention. Any modification or alteration of details that can be made based on the present invention is not claimed in the present invention. It belongs to the range.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of a connector terminal of the present invention.

FIG. 2 is a plan view of the insulating body to which the terminal of the first embodiment of the present invention corresponds.

FIG. 3 is a sectional view taken along the line II-II of FIG. 2;

FIG. 4 is a view showing a combination of the terminal of the first embodiment of the present invention and a combination of a chip module and a substrate.

FIG. 5 is a perspective view of a second embodiment of the connector terminal of the present invention.

FIG. 6 is a plan view of an insulating body corresponding to the terminal according to the second embodiment of the present invention.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 6;

FIG. 9 is a view showing a combination of a terminal and a chip module according to a second embodiment of the present invention.

FIG. 10 is a combination display diagram using a well-known connector terminal for a combination of a chip module and a board.

[Explanation of symbols]

1, 2 terminal 10, 100 weld 21, 210 suspension arm 22, 2
Reference Signs List 20 contact part 23, 230 extending part 24 bottom 25, 250 holding part 3, 4
Insulating body 30, 300 Terminal receiving groove 31, 3
10 concave groove 33, 330 second side wall 350,
460 locking groove 38, 380 first side wall 40,
400 base 43, 430, 90, 900 contact pad 46 locking part 50, 6
0 Projection 55,550 Chip module 80,8
00 substrate

Claims (13)

[Utility model registration claims] 1. A connector terminal mounted on an insulating body to achieve an electrical connection, the connector terminal being connected on a substrate,
A welded portion having a stretched portion formed by extension, a suspension arm extending from another end of the welded portion and having a contact portion at one end contacting another electronic element, and a peripheral position of the welded portion. A connector terminal comprising: a protruding portion which is appropriately extended outward and is fitted at a corresponding position on an insulating body. 2. The connector terminal according to claim 1, wherein the connector terminal has one holding portion, and the holding portion is provided on the extension portion to hold the connector terminal in the insulating body. Characterized by connector terminals. 3. The connector terminal according to claim 1, wherein the projecting portion projects vertically outward from the welded portion, and is fitted into a corresponding locking groove of the insulating body. And the connector terminal. 4. The connector terminal according to claim 1, wherein the projecting portion projects laterally outwardly from both sides of the welded portion, and is fitted into a locking groove of the corresponding insulating body. Characterized by connector terminals. 5. A connector positioned between two circuit elements having an electrical signal contact surface to achieve electrical signal connection, comprising: an insulating body having at least one terminal receiving groove; A welded portion having at least one connector terminal housed therein, the connector terminal being connected to one circuit element, a suspension arm extending from one end of the welded portion and having a contact portion at one end; A protrusion protruding outwardly from the peripheral position of the portion as appropriate and being fitted to a corresponding position portion of the insulating body.
connector. 6. The connector according to claim 5, wherein the two circuit elements are a chip module and a substrate, and contact pads are provided on the chip module and the substrate. 7. The connector according to claim 5, wherein the two circuit elements are two substrates, and the contact pads are provided on the substrates. 8. The connector according to claim 6, wherein the insulating body includes a base and a plurality of terminal receiving grooves, the base has a substantially rectangular shape, and the plurality of terminal receiving grooves connect the base. A connector characterized by having a vertically elongated groove penetrating therethrough. 9. The connector according to claim 8, wherein the plurality of terminal receiving grooves have a grid-like distribution and are distributed corresponding to the contact pads of the substrate. 10. The connector according to claim 9, wherein
A plurality of terminal receiving grooves have a first side wall and a second side wall,
At the boundary between the side wall and the second side wall, a concave groove is formed toward both sides of the terminal accommodating groove to receive the holding portion of the connector terminal, and is located in the base at a position near the base bottom surface on the other side of the second side wall. A connector, characterized in that a locking groove is provided in a longitudinal direction of a base toward the base so as to accommodate a projection of a connector terminal. 11. The connector according to claim 10, wherein the projecting portion of the connector terminal projects vertically and outwardly from the welded portion, and is fitted into a corresponding locking groove of the insulating body. ,connector. 12. The connector according to claim 9, wherein
A plurality of terminal receiving grooves are provided on the first side wall and the second side wall,
At the boundary between the first side wall and the second side wall, a concave groove is formed toward both sides of the terminal accommodating groove, accommodating the holding portion of the connector terminal, and in a portion near the base bottom surface on the other side of the second side wall, A connector characterized in that a locking groove is provided in a lateral direction toward the inside of the base to accommodate a projection of the connector terminal. 13. The connector according to claim 12, wherein the projecting portion of the connector terminal projects laterally and outwardly from both sides of the welded portion and is fitted into a corresponding locking groove of the insulating body. ,connector.