Electric connector terminal and electric connector

Abstract

The utility model discloses an electric connector terminal and an electric connector, and relates to the technical field of connectors, the electric connector terminal is used for being accommodated in an insulation body of the electric connector, the electric connector terminal comprises a substrate, an elastic arm and a conductive connection portion, the elastic arm is arranged at one end of the substrate, and the conductive connection portion is arranged at the other end of the substrate. The guide connecting part is arranged at one end, deviating from the elastic arm, of the substrate, the guide connecting part is bent to form a vertical part and a transverse part, and the vertical part is bent to form a buffer part. The arrangement of the buffer part can prevent the load borne by the terminal of the electric connector from being directly transmitted to the solder ball, and can play a certain buffer role on the solder ball, thereby reducing the stress generated by the solder ball to a certain extent, preventing the solder ball from falling or being shattered, and finally ensuring the stability and reliability of terminal welding.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to an electric connector terminal and an electric connector. Background Art

[0002] Electrical connectors are crucial components in computer hardware. The electrical connector terminals on them can be used to achieve electrical connection between the motherboard and the central processing unit (CPU), ensuring that the CPU can efficiently exchange data and communicate with other components on the motherboard.

[0003] The electrical connector terminal usually includes a welding end and a contact end. The welding end is used to be welded and fixed to the motherboard, and the contact end is used to make elastic contact with the CPU. With the continuous advancement and upgrading of CPU chips, the performance requirements for electrical connectors are also increasing. In order to adapt to higher data transmission rates, the number of electrical connector terminals on it will increase accordingly, which will lead to an increase in the locking force of the packaged electrical connector, and the force transmitted to the solder ball will also increase accordingly, and the stress generated by the solder ball will also increase accordingly. This increased stress may cause the solder ball to fall or crack, thereby affecting the reliability and stability of terminal welding. Utility Model Content

[0004] The main purpose of the utility model is to provide an electrical connector terminal and an electrical connector, aiming to prevent the load borne by the electrical connector terminal from being directly transferred to the solder ball, thereby achieving buffer protection for the solder ball and ensuring the stability and reliability of the terminal welding.

[0005] To achieve the above-mentioned purpose, the electrical connector terminal proposed in the utility model is used to be accommodated in the insulating body of the electrical connector, including a substrate, an elastic arm and a conductive portion, the elastic arm is arranged at one end of the substrate, the conductive portion is arranged at the end of the substrate away from the elastic arm, the conductive portion is bent to form a vertical portion and a transverse portion, the vertical portion is bent to form a buffer portion, and the transverse portion is used for welding with the main board.

[0006] In one embodiment, the buffer portion is arc-shaped or V-shaped.

[0007] In one embodiment, a groove for accommodating solder balls is formed on the bottom surface of the transverse portion.

[0008] In one embodiment, a hole is formed on the substrate.

[0009] In one embodiment, a limiting piece is protruded from one side of the substrate to achieve limited installation of the electrical connector terminal.

[0010] The present utility model also provides an electrical connector, which includes an insulating body and the electrical connector terminals proposed above. A plurality of terminal holes arranged in an array are provided in the insulating body, and one of the electrical connector terminals is arranged in each terminal hole, and the elastic arms of the electrical connector terminals extend out of the terminal holes.

[0011] In an embodiment, a limiting groove is recessed on the side wall of the terminal hole, and the limiting piece of the substrate is received in the limiting groove, so as to realize the limiting installation of the electrical connector terminal.

[0012] In an embodiment, the electrical connector further includes a cover plate, and the cover plate is detachably covered on the insulating body.

[0013] In an embodiment, heat conduction holes are formed in the cover plate.

[0014] In an embodiment, a suction cup adsorption area is formed at the center of the cover plate.

[0015] In the electrical connector terminal of the present utility model, a buffer portion is bent on the vertical portion of the conducting portion. The setting of the buffer portion can prevent the load borne by the electrical connector terminal from being directly transmitted to the solder balls, and can play a certain buffering role on the solder balls, thereby reducing the stress generated by the solder balls to a certain extent, preventing the solder balls from falling off or being cracked, and finally ensuring the stability and reliability of terminal soldering, so as to meet the requirements of enhanced electrical connector performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the electrical connector terminal provided by the present utility model;

[0018] Figure 2 It is a stress-strain curve graph of the electrical connector terminal provided by the present utility model and a traditional electrical connector terminal;

[0019] Figure 3 For Figure 2 The enlarged view of the boxed part;

[0020] Figure 4 It is a schematic overall structural diagram of an embodiment of the electrical connector provided by the present utility model;

[0021] Figure 5Exploded view of an embodiment of the electrical connector provided by the present utility model.

[0022] Explanation of the reference numerals in the attached drawings:

[0023] 100, electrical connector; 10, electrical connector terminal; 11, substrate; 111, missing hole; 112, limiting piece; 12, elastic arm; 13, conducting part; 131, vertical part; 132, horizontal part; 133, buffer part; 20, insulating body; 22, cover plate; 221, heat conduction hole; 222, adsorption hole; 30, solder ball.

[0024] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0028] The present utility model provides an electrical connector 100.

[0029] Please refer to Figure 1The electrical connector terminal 10 includes a substrate 11, an elastic arm 12 and a conductive portion 13. The elastic arm 12 is arranged at one end of the substrate 11, and the conductive portion 13 is arranged at the end of the substrate 11 away from the elastic arm 12. The conductive portion 13 is bent to form a vertical portion 131 and a horizontal portion 132. The vertical portion 131 is bent to form a buffer portion 133, and the horizontal portion 132 is used for welding with the motherboard to be connected.

[0030] The electrical connector terminal 10 is used to be accommodated in the insulating body 20 of the electrical connector 100, and is used to connect the motherboard and the CPU or other components. Specifically, the electrical connector terminal 10 includes a substrate 11, an elastic arm 12 and a conductive portion 13. The substrate 11 is used to provide an attachment carrier for the elastic arm 12 and the conductive portion 13. The elastic arm 12 is arranged at one end of the substrate 11 and is integrally connected to the substrate 11, and is used to contact and conduct with the CPU. The conductive portion 13 is arranged at one end of the substrate 11 away from the elastic arm 12 and is integrally connected to the substrate 11, and is used to be welded with the motherboard to be connected.

[0031] At present, in order to facilitate the welding of the conductive part and the solder ball 30, the conventional electrical connector terminal usually bends the conductive part to have a vertical part connected to the substrate and a horizontal part perpendicular to the vertical part, and then the solder ball 30 is fitted with the horizontal part to ensure that the solder ball and the conductive part have a large contact area, and then the solder ball is melted and welded with the solder under high temperature to fix the horizontal part to the motherboard. This setting method will directly transfer the load borne by the electrical connector terminal to the solder ball 30, thereby causing the solder ball 30 to generate a large stress, and when the force borne by the electrical connector terminal 10 is large, it will cause the solder ball 30 to crack.

[0032] Unlike traditional electrical connector terminals, the electrical connector terminal 10 of the utility model is bent on the vertical portion 131 of the conductive portion 13 to form an arc-shaped or "V-shaped" buffer portion 133. The setting of the buffer portion 133 can prevent the load borne by the electrical connector terminal 10 from being directly transferred to the solder ball 30, and can play a certain buffering role on the solder ball 30, thereby reducing the stress generated by the solder ball 30 to a certain extent, and preventing the solder ball from falling or being cracked, ultimately ensuring the stability and reliability of the terminal welding, thereby meeting the needs of enhanced performance of the electrical connector 100.

[0033] Figure 2The attached figure is the stress-strain curve graph of the terminal 10 of the electrical connector of the present utility model and that of the traditional electrical connector. The blue line represents the stress-strain curve of the traditional electrical connector terminal, and the red line represents the stress-strain curve of the terminal 10 of the electrical connector of the present utility model. The abscissa represents the amount of deformation, and the ordinate represents the applied stress. It can be seen from the figure that the peak stress that the traditional electrical connector terminal can withstand is 7.6 N, while the peak stress that the terminal 10 of this electrical connector can withstand is 9.1 N. Obviously, the terminal 10 of the electrical connector of the present utility model has a stronger stress-bearing capacity. Moreover, referring to Figure 3 , before the stress borne by the terminal 10 of the electrical connector of the present utility model and that of the traditional electrical connector reaches the peak, when the same stress is applied, the deformation generated by the terminal 10 of this electrical connector is smaller than that generated by the traditional electrical connector terminal. For example, when a stress of 4 N is applied, the deformation generated by the traditional electrical connector terminal is 0.003 mm, while the deformation generated by the terminal 10 of this electrical connector is only 0.0015 mm. Thus, it can be seen that under the condition of the same applied stress, the deformation generated by the terminal 10 of this electrical connector can be reduced to half of that of the traditional electrical connector terminal.

[0034] In an embodiment of the present utility model, a groove (not labeled) for receiving the solder ball 30 is recessed on the bottom surface of the transverse portion 132. The setting of the groove can increase the fitting area between the transverse portion 132 and the solder ball 30, so that the soldering of the solder ball 30 is more firm and not easy to fall off.

[0035] In addition, in an embodiment of the present utility model, a missing hole 111 is formed on the substrate 11. The setting of the missing hole 111 can weaken the overall rigidity of the electrical connector terminal 10, and further increase the rotation angle of the elastic arm 12 around the substrate 11, thereby increasing the elastic upper limit of the elastic arm 12 so that it can be in close contact with the CPU.

[0036] Referring to Figure 2 and Figure 3 , the present utility model also proposes an electrical connector 100, which includes an insulating body 20 and an electrical connector terminal 10. The specific structure of the electrical connector terminal 10 refers to the above embodiments. Since this electrical connector 100 adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0037] Among them, a plurality of terminal holes arranged in an array are provided in the insulating body 20, and an electrical connector terminal 10 is provided in each terminal hole, and the elastic arm 12 of the electrical connector terminal 10 extends out of the terminal hole. Each electrical connector terminal 10 represents an independent data channel. The more the number of electrical connector terminals 10, the stronger the data transmission performance of the electrical connector 100.

[0038] The electrical connector 100 further includes a cover plate 22 which is detachably covered on the insulating body 20 and connected to the insulating body 20. The connection manner between the cover plate 22 and the insulating body 20 can be screw connection, snap connection or the like.

[0039] Referring to Figure 2 , heat conduction holes 221 and adsorption holes 222 are formed in the cover plate 22, and the adsorption hole 222 is located at the center position of the cover plate 22.

[0040] The electrical connector 100 is used to realize the electrical connection between the main board and the CPU, but its application scope is not limited to this. Any device or component that requires an electrical connector to realize electrical connection can utilize the electrical connector 100 to meet its needs. The following assembly process takes the assembly of the main board and the CPU as an example. During assembly, first insert the electrical connector terminals 10 into the terminal holes of the insulating body 20, implant the solder balls 30 into the terminal holes so that they contact the transverse part 132 of the terminals 10. After covering the cover plate 22 on the ball-implanted electrical connector 100, move it to the main board together and send it into the reflow oven. The solder balls 30 are melted and welded with the solder under the action of high temperature, so as to realize the welding of the electrical connector terminals 10 and the main board. Then install the CPU connector buckle on the main board with the electrical connector 100 and the cover plate 22; when installing the CPU module, put the CPU module into the buckle, and then open the cover plate 22 and buckle the buckle to complete the assembly of the CPU and the main board.

[0041] Among them, the cover plate 22 plays a role in protecting the electrical connector terminals 10, avoiding bump damage to the electrical connector terminals 10 during the process of picking up, placing or transporting the electrical connector 100. In addition, the heat conduction holes 221 on the cover plate 22 facilitate the heat in the reflow oven to enter the interior of the electrical connector 100 to melt the solder balls 30. On the process production line, the cover plate 22 is usually adsorbed and moved by a suction cup. A suction cup adsorption area 222 is formed at the center of the cover plate 22, which is convenient for the suction cup to adsorb and move the cover plate 22 to ensure the stability and speed of the production process.

[0042] Referring to Figure 1 , in order to realize the installation of the electrical connector terminals 10, a limiting piece 112 is convexly arranged on one side of the substrate 11 of the electrical connector terminals 10, and a limiting groove (not marked) is concavely arranged on the side wall of the terminal hole of the insulating body 20. The limiting piece 112 is received in the limiting groove, so as to realize the limiting installation of the electrical connector terminals 10.

[0043] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An electrical connector terminal, characterized in that, The electrical connector terminal is used to be accommodated in an insulating body of an electrical connector, and the electrical connector terminal comprises: substrate; An elastic arm, the elastic arm being arranged at one end of the substrate; The guiding portion is arranged at one end of the substrate away from the elastic arm, the guiding portion is bent to form a vertical portion and a horizontal portion, and the vertical portion is bent to form a buffer portion.

2. The electrical connector terminal according to claim 1, wherein, The buffer portion is arc-shaped or V-shaped.

3. The electrical connector terminal according to claim 1, wherein, The bottom surface of the transverse portion is concavely provided with a groove for accommodating solder balls.

4. The electrical connector terminal according to claim 1, wherein The substrate is provided with a hole.

5. The electrical connector terminal according to claim 1, wherein A limiting piece is protruded from one side of the substrate to realize the limiting installation of the electrical connector terminal.

6. An electrical connector, characterized in that, It comprises an insulating body and an electrical connector terminal as claimed in any one of claims 1 to 5, wherein a plurality of terminal holes arranged in an array are arranged in the insulating body, an electrical connector terminal is arranged in each of the terminal holes, and an elastic arm of the electrical connector terminal extends out of the terminal hole.

7. The electrical connector according to claim 6, wherein The side wall of the terminal hole is recessed with a limiting groove, and the limiting piece of the substrate is accommodated in the limiting groove, thereby realizing the limiting installation of the terminal of the electrical connector.

8. The electrical connector according to claim 6, wherein, The electrical connector further comprises a cover plate, and the cover plate is detachably covered on the insulating body.

9. The electrical connector according to claim 8, wherein, The cover plate is provided with a heat conduction hole.

10. The electrical connector according to claim 8, wherein, A suction cup adsorption area is formed at the center of the cover plate.

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