An electrical connector

Abstract

The application relates to an electric connector, which comprises a terminal, an insulating seat and a shell, the shell wraps the side wall of the insulating seat, the insulating seat is provided with a positioning socket and a plurality of insertion holes, each insertion hole is configured with a terminal; the terminal comprises a plate body, two ends of the plate body each extend an elastic arm, the end of the elastic arm away from the plate body extends a contact welding part, the lower end of the plate body further extends a spacing arm, the two elastic arms are symmetrically arranged on one side of the plate body, the spacing arm and the elastic arm of the lower end have a U-shaped groove, the elastic arms each comprise a large bending arm and a reverse bending arm in the direction away from the plate body, the large bending arm bends forward, the reverse bending arm bends backward, and the contact welding part bends forward; one side of the lower end of the insertion hole is provided with a first sunken groove, the other side is provided with an insertion slot, and the upper end of the insertion hole is provided with a second sunken groove; the contact welding part extends into the first sunken groove or the second sunken groove, and the plate body is in plug-in fit with the insertion slot.

Description

Technical Field

[0001] This invention relates to the field of electrical connector technology, and more particularly to an electrical connector. Background Technology

[0002] Co-Packaged Optics (CPO) switches differ from traditional optical modules and switch chips that require plug-and-play interfaces for communication. CPO switches integrate the optical engine and the switch's ASIC chip onto the same substrate. The LGA Socket (Plane Grid Array Socket) is the core electrical connector within a CPO. The performance of the terminals in the LGA Socket is particularly crucial. Due to the extremely high terminal density in the grid array, existing terminals require improvement in both mechanical performance and heat dissipation when combined with the insulating base, significantly limiting the overall performance of the CPO switch. Summary of the Invention

[0003] In view of the above situation, it is necessary to propose an electrical connector with excellent heat dissipation performance, convenient terminal installation and excellent performance.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: an electrical connector, comprising a terminal, an insulating base and a housing, wherein the housing covers the side wall of the insulating base, the insulating base is provided with a positioning socket and a plurality of socket holes, and each socket hole is provided with a terminal; The terminal includes a plate body, with an elastic arm extending from both the lower and upper ends of the plate body. Each elastic arm has a solder joint extending from the end away from the plate body. A spacer arm also extends from the lower end of the plate body. Two elastic arms are symmetrically arranged on one side of the plate body. The spacer arm is arranged on the other side of the lower elastic arm and has a U-shaped groove between it and the lower elastic arm. Each elastic arm includes a large curved arm and a reverse curved arm in sequence along the direction away from the plate body. The reverse curved arm of the same elastic arm has the opposite bending direction to the large curved arm. The large curved arms of both elastic arms bend forward, the reverse curved arms of both elastic arms bend backward, and the solder joints of both elastic arms bend forward. The lower end of the socket has a first recessed groove on one side and a downward-opening slot on the other side. The upper end of the socket has a second recessed groove, and the second recessed groove and the first recessed groove are located on the same side. The solder joint extends into the first or second recessed groove, and the plate body is inserted into the slot.

[0005] Furthermore, the left and right sides of the plate are provided with several side protrusions, which are adapted to the slots, and the uppermost side protrusion on the plate abuts against the end face of the slot.

[0006] Furthermore, the side protrusions are arc-shaped protrusions. The upper left and right sides of the plate are each provided with an arc-shaped protrusion at the same height, and the lower left and right sides of the plate are each provided with an arc-shaped protrusion at the same height. The outer width between the two arc-shaped protrusions at the lower end is greater than the outer width between the two arc-shaped protrusions at the upper end.

[0007] Furthermore, a first extended straight arm is provided between the large curved arm and the reverse curved arm, and the angle between the first extended straight arm and the plate body is 90-120°; a second extended straight arm extends from the end of the contact welding part away from the adjacent elastic arm, and the angle between the second extended straight arm and the plate body is 60-120°.

[0008] Furthermore, the arc length of the large curved arm is greater than the arc length of the reverse curved arm, and the arc length of the reverse curved arm is greater than the arc length of the contact welding portion; the inner arc radius of the large curved arm is greater than the inner arc radius of the reverse curved arm, and the inner arc radius of the reverse curved arm is greater than the inner arc radius of the contact welding portion.

[0009] Furthermore, a plurality of the aforementioned sockets are arrayed on the insulating base to form a terminal area, and outside the terminal area, the insulating base is also provided with enhanced heat dissipation holes and / or enhanced heat dissipation grooves.

[0010] Furthermore, the socket includes a rectangular socket and a pentagonal socket. The pentagonal socket has a first side and a second side connected at an obtuse angle on the side away from the slot. The side where the slot is located is the third side. The angles at both ends of the third side are right angles. The first side is parallel to the side wall where the slot is located. The pentagonal socket surrounds the positioning socket to form a first terminal area. The rectangular socket forms a rectangular array to set a second terminal area.

[0011] Furthermore, the bottom edge of the insulating base is provided with a plurality of first riveting grooves, and the outer shell is provided with a plurality of first riveting plates, the first riveting plates being riveted into the first riveting grooves.

[0012] Furthermore, each of the four corners of the insulating base is provided with an L-shaped protrusion, and the middle of the four L-shaped protrusions forms a receiving groove.

[0013] Furthermore, the convex wall of the insulating base is provided with a plurality of second riveting grooves and / or riveting holes, and the outer shell is provided with a second riveting plate that rivets with the second riveting grooves and / or the riveting holes.

[0014] The advantages of this invention are as follows: It uses only one type of terminal, making processing and production convenient and installation simple. The elastic arms and solder joints at the upper and lower ends of the terminal plate are symmetrically designed, ensuring balanced force and preventing tilting. The elastic arms combine a large bending arm with a reverse bending arm, providing high elasticity and sufficient elastic recovery force to ensure the stability of the electrical connection. The solder joints feature an inward bending design, bending in the same direction as the large bending arm, increasing the contact surface for easier contact with the solder and providing a certain degree of elasticity. A spacer arm is also provided at the upper end of the plate, forming a U-shaped groove. During installation, the spacer arm can be clamped without affecting other parts, preventing deformation of the main force arm during installation. Furthermore, after mating with the terminal hole of the insulating base, a heat dissipation channel can be provided on the side where the spacer arm is located to improve heat dissipation performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an electrical connector according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an electrical connector according to an embodiment of the present invention from another direction; Figure 3 This is an exploded structural diagram of an electrical connector according to an embodiment of the present invention; Figure 4 This is an exploded structural diagram of an electrical connector according to an embodiment of the present invention from another direction; Figure 5 This is a partial structural schematic diagram of a rectangular socket of an electrical connector according to an embodiment of the present invention; Figure 6 This is a partial structural schematic diagram of the pentagonal socket of an electrical connector according to an embodiment of the present invention; Figure 7 This is a partial structural diagram of the rectangular socket of an electrical connector according to an embodiment of the present invention from another direction; Figure 8 This is a partial structural diagram of the pentagonal socket of an electrical connector according to an embodiment of the present invention from another direction; Figure 9 This is a schematic diagram of the terminal structure of an electrical connector according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the terminals of an electrical connector according to an embodiment of the present invention from another direction; Figure 11 This is a schematic diagram of the structure of the terminals of an electrical connector according to an embodiment of the present invention from another direction; Figure 12 This is a schematic diagram of the structure of the terminal of an electrical connector according to an embodiment of the present invention from another direction.

[0016] Label Explanation: 100. Terminal; 110. Plate; 111. Side protrusion; 120. Flexible arm; 121. Large bending arm; 122. Reverse bending arm; 123. First extended straight arm; 130. Welded section; 131. Second extended straight arm; 140, Spacer arm; 141, U-shaped groove; 200, Insulating base; 210, Positioning socket; 220, Insertion hole; 221. Rectangular socket; 222. Pentagonal socket; 222a. First side; 222b. Second side; 222c, Third side; 231, First recess; 232, Slot; 233, Second recess; 234. Third sink; 240. Terminal area; 241. First terminal area; 242. Second terminal area; 251. Reinforced heat dissipation hole; 260. First riveting groove; 270. Raised wall; 271. Riveting hole; 272. Guide ridge; 273. Protrusion; 281. Opening; 282. Groove; 291. First positioning post; 292. Second positioning post; 300. Outer shell; 310. First rivet plate; 320. Second riveting plate; 330. Positioning groove. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the following detailed description of an electrical connector according to the present invention, in conjunction with the accompanying drawings and embodiments, is provided. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0018] Please refer to Figures 1-12 An electrical connector includes a terminal 100, an insulating base 200, and a housing 300. The housing 300 covers the sidewall of the insulating base 200. The insulating base 200 is provided with a positioning socket 210 and a plurality of sockets 220. Each socket 220 is provided with a terminal 100. Terminal 100 includes a plate 110, with an elastic arm 120 extending from the lower and upper ends of the plate 110. Each elastic arm 120 has a solder joint 130 extending from the end away from the plate 110. A spacer arm 140 also extends from the lower end of the plate 110. The two elastic arms 120 are symmetrically arranged on one side of the plate 110. The spacer arm 140 is arranged on the other side of the lower elastic arm 120 and has a U-shaped groove 141 between it and the lower elastic arm 120. Each elastic arm 120 includes a large curved arm 121 and a reverse curved arm 122 in sequence along the direction away from the plate 110. The reverse curved arm 122 of the same elastic arm 120 has the opposite bending direction to the large curved arm 121. The large curved arms 121 of both elastic arms 120 are bent forward, and the reverse curved arms 122 of both elastic arms 120 are bent backward. Both solder joints 130 are bent forward. The lower end of the socket 220 has a first recess 231 on one side and a slot 232 with a downward opening 281 on the other side. The upper end of the socket 220 has a second recess 233, which is located on the same side as the first recess 231. The solder joint 130 extends into the first recess 231 or the second recess 233, and the plate 110 is inserted into the slot 232.

[0019] The entire system uses only one type of terminal 100, which is convenient for processing and production, and easy to install. The elastic arms 120 and the contact soldering parts 130 at the upper and lower ends of the plate 110 of the terminal 100 adopt a symmetrical design, which balances the force and is not easy to tilt. The elastic arm 120 adopts a design combining a large bent arm 121 and a reverse bent arm 122, which has high elasticity and provides sufficient elastic restoring force to ensure the stability of the electrical connection. The contact soldering part 130 adopts an inward bending design, that is, it bends in the same direction as the large bent arm 121, which can increase the contact surface, facilitate contact with solder, and also provide a certain degree of elasticity. A spacer arm 140 is also provided at the upper end of the plate 110, and a U-shaped groove 141 is formed by the spacer arm 140. During installation, the spacer arm 140 can be clamped for installation without affecting other parts, avoiding deformation of the main force arm during installation. After mating with the terminal 100 hole of the insulating base 200, a heat dissipation channel can be left on the side where the spacer arm 140 is located to improve heat dissipation performance.

[0020] Please refer to Figures 7-12 The plate 110 has several side protrusions 111 on its left and right sides. The side protrusions 111 are adapted to the slots 232, and the uppermost side protrusion 111 on the plate 110 abuts against the end face of the slot 232. The side protrusions 111 are used to cooperate with the slots 232 to position the plate 110 and prevent the plate 110 from moving, thereby ensuring the elasticity of the lever arm. Using side protrusions 111 instead of the plate 110 directly for cooperation makes insertion easier, reduces friction during installation, and facilitates installation.

[0021] Please refer to Figures 9-11 The side protrusions 111 are arc-shaped protrusions. The upper left and right sides of the plate 110 each have an arc-shaped protrusion at the same height, and the lower left and right sides of the plate 110 each have an arc-shaped protrusion at the same height. The outer width between the two lower arc-shaped protrusions is greater than the outer width between the two upper arc-shaped protrusions. The arc-shaped protrusions facilitate insertion, and the lower end provides a tight fit, making installation convenient and ensuring the position of the terminal 100. Preferably, the two upper arc-shaped protrusions have the same radius, and the two lower arc-shaped protrusions have the same radius. Preferably, the outer width between the two lower side protrusions 111 is 0.005-0.05mm greater than the outer width of the two upper side protrusions 111. The terminal 100 is inserted from top to bottom. The two upper side protrusions 111 act as guides, and the two lower side protrusions 111 are press-fitted, thus facilitating the installation of the terminal 100.

[0022] Please refer to Figure 12 Between the large curved arm 121 and the reverse curved arm 122, there is a first extended straight arm 123, with an angle of 90-120° between the first extended straight arm 123 and the plate 110. A second extended straight arm 131 extends from the end of the contact welding portion 130 away from the adjacent elastic arm 120, with an angle of 60-120° between the second extended straight arm 131 and the plate 110. The first extended straight arm 123 extends the length of the lever arm, improving its elasticity. The second extended straight arm 131 extends the contact welding portion 130, ensuring sufficient area for easy contact with the solder.

[0023] Please refer to Figure 12 The arc length of the large curved arm 121 is greater than the arc length of the reverse curved arm 122, and the arc length of the reverse curved arm 122 is greater than the arc length of the welded portion 130. The inner arc radius of the large curved arm 121 is greater than the inner arc radius of the reverse curved arm 122, and the inner arc radius of the reverse curved arm 122 is greater than the inner arc radius of the welded portion 130. To ensure the performance of each lever arm, the large curved arm 121 is responsible for the main springback.

[0024] For preferred options, please refer to [the provided text]. Figure 9 The height of the spacer arm 140 is less than the height of the large curved arm 121. This is to avoid interfering with the lever arm.

[0025] Please refer to Figures 1-4 A plurality of sockets 220 are arrayed on the insulating base 200 to form a terminal 100 area. Outside the terminal 100 area, the insulating base 200 is also provided with enhanced heat dissipation holes 251 and / or enhanced heat dissipation grooves. The enhanced heat dissipation holes 251 and / or enhanced heat dissipation grooves are provided to further enhance heat dissipation.

[0026] Please refer to Figures 5-8The socket 220 includes a rectangular socket 221 and a pentagonal socket 222. The pentagonal socket 222 has a first side 222a and a second side 222b connected at an obtuse angle on the side away from the slot 232. The side containing the slot 232 is the third side 222c, with right angles at both ends. The first side 222a is parallel to the sidewall containing the slot 232. The pentagonal socket 222 surrounds the positioning socket 210 to form a first terminal 100 area, and the rectangular sockets 221 form a rectangular array to set the second terminal 100 area. Typically, the first terminal 100 area is a DC / low-speed area, mainly used for power supply pins, ground pins, and low-speed signal pins for management; the second terminal 100 area is an RF area, mainly for high-frequency, high-speed data signals. Using different shapes facilitates positioning with different functional modules and prevents mistaken designs. Specifically, the first recess 231 and / or the second recess 233 of the pentagonal sockets 222 in the same column are connected. Preferably, the first settling tank 231 and the second settling tank 233 are located on the first side 222a.

[0027] Please refer to Figures 1-4 The bottom edge of the insulating base 200 is provided with several first riveting grooves 260, and the outer shell 300 is provided with several first riveting plates 310. The first riveting plates 310 are riveted to the first riveting grooves 260. The bottom surface of the insulating base 200 is supported by riveting, and the connection is stable and reliable.

[0028] Please refer to Figures 1-4 The insulating base 200 has an L-shaped protrusion 270 at each of its four corners, and the middle of the four L-shaped protrusions 270 forms a receiving groove. The receiving groove formed by the L-shaped protrusions 270 facilitates the installation of other components. At the same time, it ensures the insulation performance of the insulating shell 300.

[0029] Please refer to Figures 1-4 The insulating base 200 has a plurality of second riveting grooves and / or riveting holes 271 on its convex wall 270, and the outer shell 300 has a second riveting plate 320 that rivets with the second riveting grooves and / or riveting holes 271. This improves the stability of the connection between the outer shell 300 and the insulating base 200.

[0030] Please refer to Figures 1-4 The outer casing 300 surrounds the insulating base 200 on three sides, and forms an opening 281 on the other side. At the end where the opening 281 is located, a horizontally protruding protrusion 273 is provided on the convex wall 270, and a positioning groove 330 adapted to the protrusion 273 is provided on the outer casing 300. The protrusion 273 first forms support and positioning, which can facilitate the connection of the first rivet plate 310 and the second rivet plate 320.

[0031] Please refer to Figures 1-4 The insulating base 200 has a slot 282 at the end away from the opening 281. The slot 282 can further enhance heat dissipation.

[0032] Please refer to Figures 1-4 The inner surface of the convex wall 270 is provided with a guide rib 272, and the upper end of the guide rib 272 has a guide slope. Preferably, both the long and short sides of the L-shaped convex wall 270 are provided with a guide rib 272. The guide rib 272 facilitates the installation of other components, and the gap formed by the guide rib 272 can further improve heat dissipation.

[0033] For preferred options, please refer to [the provided text]. Figure 2 and Figure 4 The insulating base 200 has a first positioning post 291 at one end and a second positioning post 292 at the other end on its back side. The positioning posts facilitate the installation with other equipment.

[0034] For preferred options, please refer to [the provided text]. Figures 5-8 The upper end of the socket 220 is also provided with a third slot 232. The third recess 234 is L-shaped and surrounds the socket 220. The depth of the third recess 234 is greater than that of the second recess 233. The third recess 234 is located on one side of the second recess 233. The third recess 234 can be used as a plug-in slot to facilitate plugging in with other components.

[0035] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of the present invention involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0037] In summary, the electrical connector provided by this invention uses only one type of terminal, making it convenient to manufacture and easy to install. The elastic arms and solder joints at both ends of the terminal block are symmetrically designed, ensuring balanced force and preventing tilting. The elastic arms combine a large bend and a reverse bend, providing high elasticity and sufficient restoring force to guarantee the stability of the electrical connection. The solder joints feature an inward bend design, bending in the same direction as the large bend, increasing the contact surface for easier contact with the solder and providing additional elasticity. A spacer arm is also provided at the upper end of the block, forming a U-shaped groove. During installation, the spacer arm can be clamped without affecting other parts, preventing deformation of the main force arm during installation. Furthermore, after mating with the terminal hole of the insulating base, a heat dissipation channel can be provided on the side where the spacer arm is located to improve heat dissipation performance.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An electrical connector, characterized in that, It includes a terminal, an insulating base, and a housing. The housing covers the side wall of the insulating base. The insulating base is provided with a positioning socket and several holes, and each of the holes is provided with a terminal. The terminal includes a plate body, with an elastic arm extending from both the lower and upper ends of the plate body. Each elastic arm has a solder joint extending from the end away from the plate body. A spacer arm also extends from the lower end of the plate body. Two elastic arms are symmetrically arranged on one side of the plate body. The spacer arm is arranged on the other side of the lower elastic arm and has a U-shaped groove between it and the lower elastic arm. Each elastic arm includes a large curved arm and a reverse curved arm in sequence along the direction away from the plate body. The reverse curved arm of the same elastic arm has the opposite bending direction to the large curved arm. The large curved arms of both elastic arms bend forward, the reverse curved arms of both elastic arms bend backward, and the solder joints of both elastic arms bend forward. The lower end of the socket has a first recessed groove on one side and a downward-opening slot on the other side. The upper end of the socket has a second recessed groove, and the second recessed groove and the first recessed groove are located on the same side. The solder joint extends into the first or second recessed groove, and the plate body is inserted into the slot.

2. An electrical connector according to claim 1, characterized in that, The plate has several side protrusions on its left and right sides, which are adapted to the slots. The uppermost side protrusion on the plate abuts against the end face of the slot.

3. An electrical connector according to claim 2, characterized in that, The side protrusions are arc-shaped protrusions. The upper left and right sides of the plate are each provided with an arc-shaped protrusion at the same height. The lower left and right sides of the plate are each provided with an arc-shaped protrusion at the same height. The outer width between the two arc-shaped protrusions at the lower end is greater than the outer width between the two arc-shaped protrusions at the upper end.

4. An electrical connector according to claim 1, characterized in that, The large curved arm and the reverse curved arm are further provided with a first extended straight arm, the angle between the first extended straight arm and the plate body is 90-120°; the end of the contact welding part away from the adjacent elastic arm is further provided with a second extended straight arm, the angle between the second extended straight arm and the plate body is 60-120°.

5. An electrical connector according to claim 1, characterized in that, The arc length of the large curved arm is greater than the arc length of the reverse curved arm, and the arc length of the reverse curved arm is greater than the arc length of the welded part; the inner arc radius of the large curved arm is greater than the inner arc radius of the reverse curved arm, and the inner arc radius of the reverse curved arm is greater than the inner arc radius of the welded part.

6. An electrical connector according to claim 1, characterized in that, A plurality of the aforementioned sockets are arrayed on the insulating base to form a terminal area, and outside the terminal area, the insulating base is also provided with enhanced heat dissipation holes and / or enhanced heat dissipation grooves.

7. An electrical connector according to claim 6, characterized in that, The socket includes a rectangular socket and a pentagonal socket. The pentagonal socket has a first side and a second side connected at an obtuse angle on the side away from the slot. The side where the slot is located is the third side. The angles at both ends of the third side are right angles. The first side is parallel to the side wall where the slot is located. The pentagonal socket surrounds the positioning socket to form a first terminal area. The rectangular socket forms a rectangular array to set a second terminal area.

8. An electrical connector according to claim 1, characterized in that, The bottom edge of the insulating base is provided with a plurality of first riveting grooves, and the outer shell is provided with a plurality of first riveting plates, the first riveting plates being riveted into the first riveting grooves.

9. An electrical connector according to claim 1, characterized in that, The insulating base has an L-shaped protrusion at each of its four corners, and the middle of the four L-shaped protrusions forms a receiving groove.

10. An electrical connector according to claim 1, characterized in that, The insulating base has a plurality of second riveting grooves and / or riveting holes on its convex wall, and the outer shell has a second riveting plate that is riveted to fit with the second riveting grooves and / or the riveting holes.

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