CN201355656Y - electrical connector - Google Patents

Abstract

The utility model relates to an electrical connector, which can be electrically connected with a chip module and a circuit board. The electrical connector comprises an insulation body and a plurality of conductive terminals accommodated in the insulation body; each conductive terminal comprises a tabular base an elastic part bent and extending upwards from the base and a welding part bent and extending downwards from the base; openings are formed on the bases; lugs in interference fit with the corresponding positions of the insulation body are convexly arranged and protrude from the inner edges of the openings. In the utility model, the lugs of the conductive terminals are formed by punching and bending the middle parts of the bases, thereby saving material belts for shaping the conductive terminals, improving the utilization rate of the material belts, reducing the manufacture cost of the conductive terminals, and further lowering the manufacture cost of the electrical connector.

Description

electrical connector

【Technical field】

The utility model relates to an electric connector, in particular to an electric connector capable of electrically connecting a chip module and a circuit board.

【technical background】

The electrical connector related to the present invention is used to electrically connect the chip module and the circuit board. As disclosed in Taiwan Patent No. 324875, the electrical connector includes an insulating body and a plurality of conductive terminals accommodated in the insulating body. The insulating body is provided with a plurality of terminal slots for accommodating conductive terminals. The conductive terminal is integrally formed by a metal sheet, which includes a main body, an elastic contact arm bent and extended from the main body, a welding part bent and extended from the main body, a holding part bent and extended from the main body to the side, and a The tab between the body and the holding part. The electrical connector is fixed on the corresponding wall of the terminal groove of the insulating body through the holding part of the conductive terminal, and the protruding piece of the conductive terminal interferes with the other wall of the terminal groove of the insulating body to fix the conductive terminal in the insulating body.

The conductive terminals of the electrical connector are formed by stamping metal strips. However, the holding part used to hold the conductive terminal in the insulating body is bent and extended from the side of the body, and the tab is stamped from the material of the holding part, which takes up a lot of space when forming the conductive terminal. Too much tape material reduces the utilization rate of the tape, increases the manufacturing cost of the conductive terminal, and further increases the manufacturing cost of the electrical connector.

Therefore, it is necessary to provide an improved electrical connector to overcome the above-mentioned defects of the electrical connector.

【Content of utility model】

The purpose of the utility model is to provide an electrical connector which improves the utilization rate of the conductive terminal strip and reduces the manufacturing cost.

The electrical connector of the utility model is realized through the following technical solutions: an electrical connector for electrically connecting a chip module and a circuit board, which includes an insulating body and a plurality of conductive terminals accommodated in the insulating body. The conductive terminal includes a flat base, an elastic portion bent upward from the base, and a welding portion bent downward from the base. Wherein, the base is provided with an opening, and protruding from the inner edge of the opening is provided with a tab that can interfere with a corresponding position of the insulating body.

Compared with the prior art, the electrical connector of the present invention has the following advantages: the tabs of the conductive terminal are punched and bent from the middle of the base, which can save the material of the conductive terminal and improve the efficiency of forming the conductive terminal. The utilization rate of the material strip is improved, and the manufacturing cost of the conductive terminal is reduced, thereby reducing the manufacturing cost of the electrical connector.

【Description of drawings】

FIG. 1 is a three-dimensional assembly diagram of the electrical connector of the present invention, a chip module and a circuit board.

Fig. 2 is a three-dimensional exploded view of the electrical connector, the chip module and the circuit board of the utility model.

FIG. 3 is a perspective view of the insulating body and the conductive terminals of the electrical connector of the present invention.

Fig. 4 is a schematic cross-sectional view of the electrical connector, the chip module and the circuit board of the present invention.

Fig. 5 is a perspective view of a conductive terminal of the electrical connector of the present invention.

Fig. 6 is a side view of the conductive terminal of the electrical connector of the present invention.

Fig. 7 is a top view of the conductive terminal of the electrical connector of the present invention.

Fig. 8 is a perspective view of another viewing angle of the conductive terminal of the electrical connector of the present invention.

【Detailed ways】

Please refer to FIG. 1 to FIG. 8, the electrical connector 100 of the present invention is used to electrically connect the chip module 3 and the circuit board 4, which includes an insulating body 1 and a plurality of conductive terminals 2 accommodated in the insulating body 1 . The chip module 3 is provided with a conductive sheet 30 connected to the conductive terminal 2 . The circuit board 4 is provided with pins 40 connected to the conductive terminals 2 .

Please refer to Figures 5 to 8, the conductive terminal 2 is integrally formed by a metal strip, which includes a flat base 20, an elastic part 21 bent upward from the base 20, and bent downward from the base 20. The welding portion 22 is folded and extended horizontally, and the holding portion 25 protrudes from one end of the base portion 20 . The elastic portion 21 includes an elastic arm portion 211 bent and extended from the top end of the base portion 20 , and a contact arm portion 212 bent and extended upwards from the end of the elastic arm portion 211 . The elastic arm portion 211 is formed by bending the top end of the base portion 20 and extending horizontally and gradually in a direction away from the base portion 20 . The end of the contact arm portion 212 is bent to form a contact portion 210 for contacting with the conductive sheet 30 of the chip module 3 in a pressing manner. The soldering portion 22 is in the shape of a flat plate, and its bottom surface can be connected with solder balls 5 for soldering the conductive terminal 2 to the circuit board 4 . The elastic part 21 and the welding part 22 are located on the same side of the base part 20 . The retaining portion 25 is located on the same plane as the base portion 20 , and can be fastened to a corresponding position of the insulating body 1 for fixing the conductive terminal 2 in the insulating body 1 . The base 20 is provided with a narrow and long opening 23 near the lower end. A protruding piece 24 is bent and protruded from the middle of the inner edge of the opening 23 , which can be fixed on the corresponding part of the insulating body 1 by interference, and is used for fixing the conductive terminal 2 in the insulating body 1 . The protruding direction of the protruding piece 24 is perpendicular to the extending direction of the holding portion 25 , is also perpendicular to the plane of the base portion 20 , and is opposite to the extending direction of the welding portion 22 .

Please refer to FIG. 2 to FIG. 4 , the insulating body 1 is roughly rectangular in shape and made of insulating plastic material, and includes a rectangular top surface 10 and a bottom surface 11 . The insulating body 1 is provided with a plurality of terminal grooves 12 penetrating through the top surface 10 and the bottom surface 11 . The terminal slots 12 are arranged in a matrix for receiving the conductive terminals 2 . The terminal groove 12 includes a receiving hole 120 for receiving the base 20 of the conductive terminal 2 and a counterbore 121 for receiving the protruding piece 24 of the conductive terminal 2 . The retaining portion 25 of the conductive terminal 2 can interfere with the corresponding wall surface of the receiving hole 120 to fix the conductive terminal 2 in the insulating housing 1 . The counterbore 121 is circular, and a stop portion 122 protrudes from its inner wall. A top surface (not labeled) of the blocking portion 122 is lower than the top surface 10 of the insulating housing 1 . The protruding piece 24 of the conductive terminal 2 can interfere with the corresponding wall surface of the stop portion 122 to fix the conductive terminal 2 in the insulating housing 1 .

During assembly, the conductive terminals 2 are inserted into the terminal slots 12 of the insulating housing 1 from top to bottom. At this time, the protruding piece 24 of the conductive terminal 2 is interferingly clamped on the corresponding wall surface of the stop portion 122 of the insulating body 1, and the holding portion 25 of the conductive terminal 2 is interferingly clamped on the corresponding wall surface of the receiving hole 120 of the insulating body 1. The elastic portion 21 of the conductive terminal 2 protrudes from the top end of the insulating body 1 , and the welding portion 22 of the conductive terminal 2 protrudes from the bottom end of the insulating body 1 .

After assembly, the soldering portion 22 of the conductive terminal 2 can be soldered to the pin 40 of the circuit board 4 through the solder ball 5 , and the contact portion 210 of the conductive terminal 2 is in contact with the conductive sheet 30 of the chip module 3 by crimping. Thus, the electrical connection between the chip module 3 and the circuit board 4 is realized.

The protruding piece 24 of the conductive terminal 2 of the electrical connector 100 of the present utility model is formed by punching and bending the middle part of the base 20. When forming the conductive terminal, the material strip material for manufacturing the conductive terminal 2 is effectively used, and the material is improved. The utilization rate of the strip material reduces the manufacturing cost of the conductive terminal 2 , thereby reducing the manufacturing cost of the electrical connector 100 .

In the above-mentioned preferred embodiment, the connection method between the conductive terminal 2 and the circuit board 4 is not limited thereto, and the welding portion 22 of the conductive terminal 2 can also be changed into a pin that penetrates into the through hole of the circuit board 4 and is electrically connected. Or electrically connect with the circuit board 4 by pressing.

The above is only one embodiment of the utility model, not all or the only implementation. Any equivalent change to the technical solution of the utility model adopted by those of ordinary skill in the art by reading the specification of the utility model shall be considered as the present invention. covered by the claims of the utility model.

Claims (10)

1. An electrical connector for electrically connecting a chip module and a circuit board, which includes an insulating body and a plurality of conductive terminals accommodated in the insulating body, the conductive terminals include a flat base, and are bent and extended upwards from the base The elastic part, the welding part bent and extended downward from the base, is characterized in that: the base is provided with an opening, and protruding from the inner edge of the opening is provided with a tab that interferes with the corresponding position of the insulating body. 2 . The electrical connector according to claim 1 , wherein the protruding piece of the conductive terminal is bent and protruded from the inner edge of the opening in a direction opposite to the extending direction of the welding portion. 3 . 3. The electrical connector as claimed in claim 2, wherein the protruding direction of the tab of the conductive terminal is perpendicular to the plane where the base is located. 4. The electrical connector according to claim 1, wherein a terminal groove for accommodating conductive terminals is provided on the insulating body, the terminal groove includes a counterbore, and the inner wall of the counterbore protrudes with a stopper A stopper, the top surface of the stopper is lower than the top surface of the insulating body. 5 . The electrical connector as claimed in claim 4 , wherein the protruding piece of the conductive terminal can be fixed by interference on a corresponding wall surface of the stop portion of the insulating body. 6 . 6. An electrical connector for electrically connecting a chip module and a circuit board, which includes an insulating body and a plurality of conductive terminals accommodated in the insulating body, the conductive terminals include a base, and a holding portion extending from the base to the side . The elastic part bent and extended upward from the base and the welding part bent and extended downward from the base are characterized in that: the base is provided with an opening, and a lug protrudes from the inner edge of the opening. The holding part and the base part are located on the same plane. 7 . The electrical connector according to claim 6 , wherein the opening of the conductive terminal is long and narrow, and the lug is formed by bending and protruding from the middle of the inner edge of the opening. 8 . 8 . The electrical connector as claimed in claim 7 , wherein the protruding direction of the tab of the conductive terminal is perpendicular to the extending direction of the holding portion and opposite to the extending direction of the soldering portion. 9. The electrical connector according to claim 6, wherein a terminal groove for accommodating conductive terminals is provided on the insulating body, the terminal groove includes a counterbore, and the inner wall of the counterbore protrudes with a stopper A stopper, the top surface of the stopper is lower than the top surface of the insulating body. 10 . The electrical connector as claimed in claim 9 , wherein the protruding piece of the conductive terminal can be fixed by interference on a corresponding wall surface of the stop portion of the insulating body. 11 .

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