Electrical connector

Abstract

The utility model discloses an electric connector, including seat body and being located seat body's multiple terminal sheet, every terminal sheet includes plastic body and inlaying embedding in plastic body two first terminal and two second terminal, and plastic body includes first cladding portion and two second cladding portions of connecting in the front and back two sides of first cladding portion, first cladding portion and two first terminal inlaying embedding formation, two second cladding portions and two second terminal one to one correspond inlaying embedding formation, and the top of second cladding portion is higher than first cladding portion, and the top of every second cladding portion extends upward and forms the partition, and the part of second main part is set up in the second cladding portion of partition outside and protrudes upward, and the partition separates the first terminal and second terminal apart in the front and back direction of side by side, and thus is favorable for reducing the crosstalk between both, and simultaneously need not setting up the more complex partition structure on seat body, is favorable for reducing the complexity of mould, and then reduces the cost.

Description

[Technical Field]

[0001] This utility model relates to the field of connectors, and more particularly to an electrical connector for reducing signal crosstalk. [Background Technology]

[0002] In the field of connectors, a pre-existing edge connector is disclosed, comprising: an insulating body having a longitudinally elongated slot recessed from top to bottom for inserting an electronic module; multiple terminal slots are respectively provided in the two longitudinally elongated sidewalls on both sides of the slot; and multiple terminals, correspondingly housed in the corresponding terminal slots in the two longitudinally elongated sidewalls, wherein at least a portion of the terminal slots are provided with double-layer terminals, and the remaining terminal slots are provided with single-layer terminals; wherein the double-layer terminals include a lower terminal and an upper terminal; in the position of the double-layer terminals, a lower terminal and an upper terminal in each terminal slot are embedded and formed together with a plug in the terminal slot; in the position of the single-layer terminals, a terminal in each terminal slot is embedded and formed together with a plug in the terminal slot; each plug is respectively inserted and fixed in the corresponding terminal slot. Then, at the position of the double-layer terminals, the distance between the upper and lower terminals is relatively close, so there will be signal crosstalk between them. In addition, in another prior art, the insulating body is provided with two separate terminal slots at the position of the double-layer terminals. The upper terminal is inserted downward into the terminal slot and the lower terminal is inserted upward into the other terminal slot, so as to separate the upper and lower terminals. However, this arrangement makes the structure of the insulating body more complicated, and the terminals need to be installed from two directions, which also increases the complexity of terminal installation.

[0003] Therefore, it is necessary to provide an electrical connector that reduces signal crosstalk in order to overcome the above-mentioned defects. [Utility Model Content]

[0004] In view of the problems in the background technology, the purpose of this utility model is to provide an electrical connector that reduces signal crosstalk.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an electrical connector, comprising: a base extending in a left-right direction, including a slot and multiple mounting slots, the slot extending upward through the base for accommodating a mating member, the multiple mounting slots being spaced apart in a left-right direction, each mounting slot extending downward through the base and at least a portion thereof located below the slot; multiple terminal pieces disposed in the multiple mounting slots, each terminal piece including a plastic body and two first terminals and two second terminals embedded in the plastic body, the plastic body being accommodated in a corresponding mounting slot, the two first terminals being distributed on the front and rear sides of the slot, the two second terminals being distributed on the front and rear sides of the slot, and the two first terminals being located between the two second terminals in the front-rear direction. Each first terminal includes a first body portion and a first contact portion and a first welding portion located on the upper and lower sides of the first body portion. Each second terminal includes a second body portion and a second contact portion and a second welding portion located on the upper and lower sides of the body portion. Both the first contact portion and the second contact portion are exposed in the slot, with the first contact portion lower than the second contact portion. Both the first welding portion and the second welding portion extend beyond the mounting slot. The plastic body includes a first covering portion and two second covering portions. The two second covering portions are connected to the front and rear sides of the first covering portion. The first covering portion is embedded in the two first body portions, and the two second covering portions are embedded in the two second body portions one-to-one. The top of the second covering portion is higher than the first covering portion.

[0006] The first part is located below the slot, and the two second covering parts are located on the front and rear sides of the slot. A partition is formed by extending upward from the top of each second covering part. A part of the second main body is provided to protrude upward from the second covering part outside the corresponding partition. On the same side of the slot, the partition separates the corresponding first terminal and second terminal in the front-rear direction.

[0007] Furthermore, the top of the partition is not lower than the top of the first terminal, and the partition extends beyond the left and right sides of the corresponding first terminal and the left and right sides of the second terminal in the left and right direction.

[0008] Furthermore, the width of the first covering part in the left-right direction is not greater than the width of the second covering part in the left-right direction. The plastic body also includes a reinforcing part, which is connected to the partition part and the side of the second covering part facing the slot in the front-back direction. The width of the reinforcing part in the left-right direction is not greater than the width of the partition part in the left-right direction, and the width of the reinforcing part in the left-right direction is not greater than the width of the first covering part in the left-right direction.

[0009] Furthermore, the first covering portion protrudes downward from the second covering portion, forming a notch on the outer side of the first covering portion away from the slot and below the second covering portion. With respect to the same side of the slot, a portion of the first main body portion extends from the bottom of the first covering portion, and the first weld portion extends toward the corresponding notch. A portion of the second main body portion extends from the bottom of the second covering portion and extends into the corresponding notch. The second weld portion is at least partially located on the outer side of the second main body portion away from the slot and extends in a direction away from the slot.

[0010] Furthermore, the second terminal also includes an arched connecting portion connecting the second main body portion and the second welding portion. The arched connecting portion connects to the upper end of the second welding portion, and the second welding portion is at least partially located outside the corresponding notch in the front-back direction.

[0011] Furthermore, the base also includes two side walls that define the width of the slot. A portion of each mounting slot is recessed upward from the bottom wall of the side wall. Each side wall has multiple recessed clearance slots at the position corresponding to the arched connection on the side wall facing away from the slot. The multiple clearance slots are arranged in a front-back direction in relation to the multiple mounting slots. The clearance slots connect to the corresponding mounting slots and penetrate downward through the side wall.

[0012] Furthermore, the plastic body has two oppositely arranged outer surfaces in the left-right direction, and each mounting groove has two oppositely arranged inner wall surfaces in the left-right direction. One of the inner wall surfaces and the outer surface surface facing it has a positioning protrusion, and the other has a positioning recess that cooperates with the positioning protrusion.

[0013] Furthermore, the base includes a connecting wall located directly below the slot, and a portion of each mounting slot is formed by an upward recess from the lower surface of the connecting wall, with positioning recesses or positioning protrusions positioned in the left-right direction corresponding to the position of the connecting wall.

[0014] Furthermore, a positioning recess is provided on the inner wall surface, and a positioning protrusion is provided on both outer surfaces of the plastic body. Multiple terminal pieces are stacked in the left-right direction to form a terminal module. Multiple terminal modules are correspondingly arranged in multiple mounting slots. The positioning protrusions on two adjacent terminal pieces on the same terminal module abut against each other, so that a heat dissipation gap is formed on the front and back sides of the positioning protrusions of the adjacent terminal pieces, and the heat dissipation gap penetrates the plastic body.

[0015] Furthermore, each plastic body has at least one limiting protrusion on one of its outer surfaces and at least one limiting recess on the other outer surface, with the limiting protrusion being higher than the positioning protrusion. Two adjacent terminal pieces are engaged by the locking fit of the limiting protrusion and the limiting recess, so that multiple terminal pieces are stacked and fixed to form a terminal module. The inner wall surface has a receiving groove corresponding to the limiting protrusion, which extends downward through the base. When the terminal module is inserted upward into the corresponding mounting groove, the limiting protrusion first engages with the receiving groove to initially position the terminal module, and then the positioning protrusion engages with the positioning recess to precisely position the terminal module.

[0016] Furthermore, for the same plastic body, both second covering portions are provided with limiting protrusions and limiting recesses, and the limiting protrusions and limiting recesses provided on the two second covering portions are respectively symmetrically arranged relative to the first covering portion.

[0017] Furthermore, the limiting recess exposes the corresponding second main body in the left-right direction to position the second terminal when it is embedded in the plastic body.

[0018] Furthermore, the second terminal includes an annular structure connected to the top of the second main body, and a second contact portion is formed on the annular structure. The annular structure includes a first spring arm, a second spring arm, and a guide section connecting the first spring arm and the second spring arm. The first spring arm and the second spring arm both extend upward from the second main body and toward the side closer to the slot. The end of the second spring arm connected to the second main body is positioned closer to the slot in the front-rear direction than the end of the first spring arm connected to the second main body. The second contact portion is formed at the connection between the guide section and the second spring arm. The guide section is used to guide the insertion of the mating member. The second spring arm includes an extension section, an arched section, and a connecting section. The extension section extends upward from the second main body. The arched section is connected between the extension section and the connecting section and arches toward the first spring arm. The connecting section is connected between the guide section and the arched section. The apex of the arched section is higher than the second contact portion.

[0019] Furthermore, observing the second terminal in the left-right direction, the width of the first spring arm gradually narrows from the second main body to the guide section, and the arched section is located above the first terminal.

[0020] Furthermore, multiple terminal pieces are stacked in the left-right direction to form a terminal module, and multiple terminal modules are arranged one-to-one in multiple mounting slots; the electrical connector also includes multiple third terminals inserted into the base, each third terminal having a third contact portion, and multiple third contacts are arranged on the front and rear sides of the slot. On the same side of the front and rear sides of the slot, the third contacts are arranged in the same row as the first contacts in the left-right direction, and multiple third contacts are arranged between any two adjacent terminal modules.

[0021] This invention embeds two first terminals and two second terminals into a plastic body, forming a terminal piece. The plastic body includes a first covering portion and two second covering portions. The two second covering portions are connected to the front and rear sides of the first covering portion. The first covering portion is embedded with two first main body portions, and the two second covering portions are embedded with two second main body portions in a one-to-one correspondence. The top of the second covering portion is higher than the first covering portion.

[0022] The first covering part is located below the slot, and two second covering parts are located on the front and rear sides of the slot. A partition part extends upward from the top of each second covering part to form a partition part. A part of the second main body part protrudes upward from the second covering part outside the partition part. The partition part separates the first terminal and the second terminal in the front-rear direction. In this way, the partition part of the plastic body separates the first terminal and the second terminal that are side by side in the front-rear direction, which helps to reduce crosstalk between them. At the same time, it eliminates the need to set a more complex partition structure on the base body, which helps to reduce the complexity of the mold and thus reduce the cost. [Attached Image Description]

[0023] Figure 1 This is a perspective view of the electrical connector of this utility model electrically connecting a mating part and a circuit board.

[0024] Figure 2 for Figure 1 Exploded view of CEC connectors;

[0025] Figure 3 for Figure 2 A perspective view of the middle terminal piece and part of the third terminal;

[0026] Figure 4 for Figure 2 A stereoscopic view of the CEC connector with the hidden ear clips visible from another perspective;

[0027] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0028] Figure 6 for Figure 5 A schematic diagram showing the terminal module inserted at the bottom of the base from another perspective;

[0029] Figure 7 for Figure 1 A top view of the CEC connector and a partial enlarged view of its components;

[0030] Figure 8 for Figure 1 Bottom view of the CEC connector;

[0031] Figure 9 for Figure 8A magnified view of a section at point B in the middle;

[0032] Figure 10 for Figure 8 A cross-sectional view of the CEC connector after it has been inserted into the mating part, cut along the CC direction;

[0033] Figure 11 for Figure 10 A schematic diagram showing the middle terminal module before it is inserted upwards into the base;

[0034] Figure 12 for Figure 8 Cross-sectional view of the CEC connector along DD;

[0035] Figure 13 for Figure 2 3D view of the middle terminal module;

[0036] Figure 14 for Figure 13 A 3D view of the middle terminal piece;

[0037] Figure 15 for Figure 14 A three-dimensional view of the middle terminal piece from another perspective;

[0038] Figure 16 for Figure 15 Front view of the middle terminal piece.

[0039] Explanation of icon numbers:

[0040]

[0041]

Detailed Implementation Methods

[0042] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0043] In this utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0044] like Figure 1 and Figure 2As shown, the electrical connector 100 of this utility model is connected to a mating part 200 and a circuit board 300. This embodiment uses a DDR6 connector as an example, but it is not limited to DDR6. The mating part 200 is specifically an electronic card 200. Of course, in other embodiments, the mating part 200 can also be a mating connector with a tongue plate. The electrical connector 100 of this utility model defines a front-back direction X, a left-right direction Y, and a top-bottom direction Z. The front-back direction X, the left-right direction Y, and the top-bottom direction Z are perpendicular to each other. For ease of understanding and description, the forward direction in the front-back direction X is defined as the positive direction, the rightward direction in the left-right direction Y is defined as the positive direction, and the upward direction in the top-bottom direction Z is defined as the positive direction. In other embodiments, the specific orientation of the front-back direction X, the left-right direction Y, and the top-bottom direction Z can be defined according to the specific use of the electrical connector 100.

[0045] like Figure 2 and Figure 3 As shown, the electrical connector 100 includes a base 1, a plurality of terminal modules M and a plurality of third terminals 5. The base 1 is used to house the connector 200. The plurality of terminal modules M and the plurality of third terminals 5 are disposed on the base 1 and are used to electrically connect the connector 200 and the circuit board 300.

[0046] like Figure 2 and Figure 4 As shown, the base 1 includes a plug portion 1A extending in a left-right direction X and two tower portions 1B located at the left and right ends of the main body. Both tower portions 1B are higher than the plug portion 1A. Specifically, the base 1 is integrally molded from plastic material, that is, the plug portion 1A and the two tower portions 1B are injection molded in one step. However, in other embodiments, the plug portion 1A may be separately disposed from the two tower portions 1B. The base 1 may also include a reinforcing shell (not shown in the figure), with the two tower portions 1B disposed on the reinforcing shell, and the reinforcing shell covering the plug portion 1A. The reinforcing shell may be made of plastic material or metal material, for example, it may be made by powder metallurgy, or it may be made of both plastic and metal materials, for example, a plastic shell may be embedded in a metal shell.

[0047] like Figure 2 and Figure 4 As shown, the plug-in part 1A includes a slot 11 and a plurality of mounting slots 12. The slot 11 extends upward through the base 1 to accommodate the docking member 200. The plurality of mounting slots 12 are spaced apart along the left-right direction X. Each mounting slot 12 extends downward through the plug-in part 1A and at least a portion of it is located below the slot 11. Each mounting slot 12 has two opposing inner wall surfaces in the left-right direction X.

[0048] like Figure 4 , Figure 5 and Figure 7As shown, the plug-in portion 1A includes two side walls 13 and a connecting wall 14. Both side walls 13 and the connecting wall 14 extend along the left-right direction X. The two side walls 13 are spaced apart in the front-back direction Y to define the width of the slot 11. The connecting wall 14 is located directly below the slot 11. The width of the connecting wall 14 in the front-back direction Y is narrower than the width of the slot 11 in the front-back direction Y. The plug-in portion 1A includes a plurality of ribs 15 connected to the front and back sides of the connecting wall 14. The connecting wall 14 is on the same side of the front and back sides. The plurality of ribs 15 are evenly spaced along the left-right direction X. A portion of the ribs 15 belongs to the corresponding side wall 13. Thus, two adjacent ribs 15 in the left-right direction X define a terminal slot (not shown in the figure). The plurality of ribs 15 are arranged one-to-one in the front-back direction Y of the connecting wall 14, so that the plurality of terminal slots are arranged facing each other in the front-back direction Y. Specifically, each sidewall 13 has a plurality of recessed clearance grooves 132 on the sidewall 13 facing away from the slot 11. The plurality of clearance grooves 132 are correspondingly arranged with the plurality of mounting slots 12 in the front-back direction Y. The clearance grooves 132 connect to the corresponding mounting slots 12 and penetrate downward through the sidewall 13. The insertion part 1A also includes a foolproof part 16 connecting the two sidewalls 13. The foolproof part 16 divides the slot 11 into slots of different lengths in the left-right direction X.

[0049] like Figure 5 and Figure 10 as well as Figure 11 As shown, each mounting groove 12 is provided for multiple terminal grooves on each of the front and rear sides of the connecting wall 14. Specifically, each mounting groove 12 occupies the width of four terminal grooves continuously provided on the front and rear sides of the connecting wall 14. The mounting groove 12 extends upward from the lower surface of the connecting wall 14, the support rib 15 and the side wall 13. Specifically, each mounting groove 12 includes a first part and two second parts. The first part is recessed upward from the lower surface of the connecting wall 14 and a part of the lower surface of the corresponding support rib 15. The two second parts are recessed upward from the lower surfaces of the two side walls 13 one to one. The upward recess depth of the second part is greater than the upward recess depth of the first part, and the upward extension of the second part exceeds the height of the connecting wall 14.

[0050] like Figure 5 and Figure 6 As shown, each of the two inner wall surfaces of the mounting groove 12 is provided with a positioning recess 141 at the position corresponding to the connecting wall 14 in the left-right direction X. Specifically, one of the inner wall surfaces of the mounting groove 12 is also provided with two receiving grooves 131. The two receiving grooves 131 are located at the positions corresponding to the two side walls 13 on the inner wall surface, and the receiving grooves 131 penetrate downward through the base body 1.

[0051] like Figure 4 and Figure 13As shown, multiple terminal modules M are correspondingly disposed in multiple mounting slots 12. Each terminal module M includes multiple terminal pieces P stacked along the left-right direction X. Specifically, each terminal module M includes four stacked terminal pieces P. Each terminal piece P includes a plastic body 2 and two first terminals 3 and two second terminals 4 embedded in the plastic body 2. The plastic body 2 is housed in the corresponding mounting slot 12. The two first terminals 3 are distributed on the front and rear sides of the slot 11, and the two second terminals 4 are distributed on the front and rear sides of the slot 11. The two first terminals 3 are located between the two second terminals 4 in the front-back direction Y. Specifically, the first terminals 3 and the second terminals 4 are both formed from metal sheets.

[0052] like Figure 11 and Figure 14 As shown, each first terminal 3 includes a first main body 31 and a first contact portion 331 and a first welding portion 32 located on the upper and lower sides of the first main body 31. The first contact portion 331 is exposed in the slot 11. The first main body 31 is at least partially covered by the plastic body 2. The first welding portion 32 extends out of the mounting groove 12. Specifically, most of the first main body 31 is covered by the plastic body 2. The first welding portion 32 is connected to the bottom end of the first main body 31 and extends away from the slot 11 in the front-rear direction Y. Each first terminal 3 includes a main spring arm 33 and a secondary spring arm 34 extending upward from the top of the first main body 31. The main spring arm 33 is closer to the slot 11 than the secondary spring arm 34 in the front-rear direction Y. Since the first terminal 3 is formed by cutting metal sheet, the thickness of the main spring arm 33 is... The thickness of the main spring arm 33 and the secondary spring arm 34 are both the thickness of the metal sheet, but the width of the main spring arm 33 in the direction perpendicular to the sheet thickness is greater than the width of the secondary spring arm 34 in the direction perpendicular to the sheet thickness. The first contact portion 331 is formed on the main spring arm 33. The main spring arm 33 is used to contact the mating member 200 of the insertion slot 11. At the same time, the main spring arm 33 is actuated by the mating member 200 and moves in the front-back direction Y toward the side away from the slot 11 until it contacts the secondary spring arm 34, thus forming two conductive paths. Specifically, the secondary spring arm 34 abuts against the main spring arm 33 at the position directly opposite the first contact portion 331. That is, the contact position of the main spring arm 33 with the mating member 200 and the contact portion of the secondary spring arm 34 with the main spring arm 33 are at the same height. This setting facilitates uniform electroplating of the contact positions of the main spring arm 33 and the secondary spring arm 34.

[0053] like Figure 14 and Figure 15As shown, each second terminal 4 includes a second body portion 41, a second contact portion 434, a second welding portion 42, and an arched connecting portion 44. The second contact portion 434 is located on the upper side of the second body portion 41, the second welding portion 42 is located on the lower side of the second body portion 41, and the arched connecting portion 44 connects the second body portion 41 and the second welding portion 42. The second contact portion 434 is exposed in the slot 11, and the first contact portion 331 is lower than the second contact portion 434. The second body portion 41 is at least partially covered by plastic. 2. The second welding part 42 extends out of the mounting groove 12. Specifically, most of the second main body 41 is covered by the plastic body 2. The second welding part 42 is located at the bottom of the arched connecting part 44 and extends away from the slot 11 in the front-back direction Y. The arched connecting part 44 enables the second welding part 42 to increase the distance between the second welding part 42 and the first welding part 32, effectively solving the signal interference problem between the first welding part 32 and the second welding part 42, and at the same time solving the solder creep problem of the second welding part 42.

[0054] like Figure 10 , Figure 11 and Figure 14 As shown, each second terminal 4 also includes an annular structure 43 connected to the top end of the second main body 41, and a second contact portion 434 is formed on the annular structure 43. The annular structure 43 includes a first spring arm 431, a second spring arm 432, and a guide section 433 connecting the first spring arm 431 and the second spring arm 432. The first spring arm 431 and the second spring arm 432 both extend upward from the top end of the second main body 41 and toward the side near the slot 11. The end of the second spring arm 432 connected to the second main body 41 is closer to the slot 11 in the front-rear direction Y than the end of the first spring arm 431 connected to the second main body 41. The second contact portion 434 is formed at the connection between the guide section 433 and the first spring arm 431. The guide section 433 is used to guide the insertion of the docking member 200. The width of the first spring arm 431 gradually narrows from its bottom to its top. In other words, the width of the first spring arm 431 gradually narrows from the second main body 41 toward the guide section 433. The second spring arm 432 includes an extension section 4321, an arched section 4322, and a connecting section 4323. The extension section 4321 extends upward from the top of the second main body 41. The arched section 4322 connects the extension section 4321 and the connecting section 4323 and arches towards the first spring arm 431. The connecting section 4323 connects the guide section 433 and the arched section 4322. The apex of the arched section 4322 is higher than or equal to the second contact portion 434. Specifically, the opening of the arched section 4322 corresponds to the top of the first terminal 3. Thus, on the one hand, the arched section 4322 allows for a larger distance between the first terminal 3 and the second terminal 4; on the other hand, the arched section 4322 reduces the insertion force of the second terminal 4, making the insertion of the mating member 200 easier.

[0055] like Figure 6 , Figure 14 and Figure 15 As shown, each plastic body 2 has two opposing outer surfaces in the left-right direction X. One of the inner wall surface of the mounting groove 12 and the outer surface facing it has a protruding positioning protrusion 211, and the other has a recessed positioning recess 141 that mates with the positioning protrusion 211. Specifically, the inner wall surface of the mounting groove 12 has a recessed positioning recess 141, and the outer surface of the plastic body 2 has a corresponding protruding positioning protrusion 211. Of course, in other embodiments, the positions of the positioning protrusion 211 and the positioning recess 141 can be interchanged; that is, the positioning recess 141 is recessed on the outer surface of the plastic body 2, and the positioning protrusion 211 protrudes from the inner wall surface of the mounting groove 12. This is not specifically limited and can be selected according to actual conditions.

[0056] like Figure 13 , Figure 14 and Figure 15 As shown, on the two outer surfaces of each plastic body 2, one outer surface has at least one limiting protrusion 221 protruding, and the other outer surface has at least one limiting recess 222 corresponding to the limiting protrusion 221. The limiting protrusion 221 is higher than the positioning protrusion 211. Two adjacent terminal pieces P are engaged by the locking of the limiting protrusion 221 and the limiting recess 222, so that multiple terminal pieces P are stacked and fixed to form a terminal module M. When the terminal module M is inserted upward into the mounting groove 12, the limiting protrusion 221 first engages with the receiving groove 131 to initially position the terminal module M, and then the positioning protrusion 211 engages with the positioning recess 141 to precisely position the terminal module M.

[0057] like Figure 9 and Figure 13 As shown, when multiple terminal pieces P are stacked to form a terminal module M, the opposing positioning protrusions 211 on two adjacent terminal pieces P abut against each other, so that a heat dissipation gap D is formed on the front and rear sides of the positioning protrusions 211 of the adjacent terminal pieces P. Specifically, the heat dissipation gap D is only set at the position of the first terminal 3 and does not extend to the position of the second terminal 4. This gap is used to facilitate the evaporation of flux gas during soldering, and at the same time, it is beneficial to heat dissipation during soldering to uniformly heat the soldering temperature.

[0058] like Figure 13 , Figure 14 and Figure 15As shown, the plastic body 2 includes a first covering portion 21, two second covering portions 22, two partition portions 24, and two reinforcing portions 25. The two second covering portions 22 are connected to the front and rear sides of the first covering portion 21. The width of the first covering portion 21 in the left-right direction X is not greater than the width of the second covering portion 22 in the left-right direction X. The two partition portions 24 extend upward from the top of the two second covering portions 22, corresponding to each other. The two reinforcing portions 25 extend outward from the side of the partition portions 24 and the corresponding second covering portions 22 in the front-back direction Y, near the first terminal 3. The width of the reinforcing portions 25 in the left-right direction X is not greater than the width of the partition portions 24 in the left-right direction X. The width of the first covering part 21 is embedded in the two first main body parts 31, and the two second covering parts 22 are embedded in the two second main body parts 41 in a corresponding manner. Specifically, the width of the first covering part 21 in the left-right direction X is smaller than the width of the second covering part 22 in the left-right direction X. The width of the partition part 24 in the left-right direction X is equal to the width of the second covering part 22 in the left-right direction X. The width of the reinforcing part 25 in the left-right direction X is smaller than the width of the partition part 24 in the left-right direction X. The first covering part 21 is accommodated in the first part of the mounting groove 12, and the two second covering parts 22 are accommodated in the two second parts of the mounting groove 12 in a corresponding manner. The first terminal 3 and the second terminal 4 are snapped onto the base body 1 through the plastic body 2. The second covering part 22 is higher than the first covering part 21. The positioning protrusion 211 is provided on the first covering part 21, and the limiting protrusion 221 and the limiting recess 222 are provided on the second covering part 22. This arrangement is beneficial to the stability of the installation between the two terminal pieces P. Specifically, the limiting recess 222 exposes the corresponding second main body part 41 in the left-right direction X, so as to position the second terminal 4 when the second main body part 41 is embedded in the second covering part 22, and at the same time, the impedance of the second terminal 4 can also be adjusted.

[0059] like Figure 11 , Figure 13 and Figure 14As shown, the first covering portion 21 protrudes downward from the second covering portion 22. A notch 23 is formed on the outer side of the first covering portion 21 away from the slot 11 and below the second covering portion 22. For the same side of the slot 11, a portion of the first main body portion 31 extends from the bottom of the first covering portion 21, and the first welding portion 32 extends toward the corresponding notch 23. A portion of the second main body portion 41 extends from the bottom of the second covering portion 22 and extends into the corresponding notch 23. The second welding portion 42 is at least partially located on the outer side of the second main body portion 41 away from the slot 11 and extends in a direction away from the slot 11. The second terminal 4 also includes an arched connecting portion 44 connecting the second main body portion 41 and the second welding portion 42. The arched connecting portion 44 connects to the upper end of the second welding portion 42, and the second welding portion 42 is located outside the corresponding notch 23 in the front-rear direction Y. Specifically, the arched connecting portion 44 is provided corresponding to the clearance groove 132. In other embodiments, the second welding portion 42 may be partially located outside the corresponding notch 23 in the front-rear direction Y.

[0060] like Figure 14 and Figure 15 As shown, on the same side of the slot 11, the separator 24 separates the corresponding first terminal 3 and second terminal 4 in the front-back direction Y. The separator 24 extends beyond the left and right sides of the corresponding first terminal 3 and second terminal 4 in the left-right direction. That is, the width of the separator 24 in the left-right direction X is greater than the width of the first terminal 3 in the left-right direction X and the width of the second terminal 4 in the left-right direction X. This can effectively reduce crosstalk between the first terminal 3 and the second terminal 4. Specifically, the top of the separator 24 is not lower than the top of the first terminal 3, which can better reduce crosstalk between the first terminal 3 and the second terminal 4. However, in other embodiments, the separator 24 may be slightly lower than the top of the first terminal 3, which is not limited here. The reinforcing part 25 is gradually narrowed from the partition part 24 toward the slot 11. The reinforcing part 25 is used to strengthen the partition part 24. Specifically, the width of the reinforcing part 25 in the left-right direction X is smaller than the width of the partition part 24 in the left-right direction X and the width of the second covering part 22 in the left-right direction X. In this way, the reinforcing part 25 will not interfere with the inner wall surface of the mounting slot 12, thereby affecting the installation of the terminal module M.

[0061] like Figure 2 and Figure 3As shown, in this embodiment, multiple third terminals 5 are directly assembled into the base 1, meaning the third terminals 5 are not embedded in plastic material. The third terminals 5 are formed from sheet metal. Each third terminal 5 includes a third main body 51, a third contact portion 53, and a third welding portion 52 located on the upper and lower sides of the third main body 51. The third contact portion 53 is exposed in the slot 11. Multiple third contact portions 53 are arranged on the front and rear sides of the slot 11. On the same side of the front and rear sides of the slot 11, the third contact portion 53 is arranged in the same row as the first contact portion 331 along the left-right direction X. Multiple third terminals 5 are arranged between any two adjacent terminal modules M. Specifically, the structure of the third terminal 5 is similar to that of the first terminal 3, meaning each third terminal 5 also includes a main spring arm 33 and a secondary spring arm 34. In other embodiments, plastic material can be embedded in at least one third terminal 5 as needed.

[0062] like Figure 2 and Figure 3 As shown, specifically, the multiple first terminals 3 and the multiple third terminals 5 each include signal terminals and ground terminals. When two first terminals 3 and two third terminals 5 are arranged opposite each other in the front-back direction Y of the slot 11 and are ground terminals, the first main body 31 / third main body 51 of the two ground terminals are integrally connected by a connector 6. When two first terminals 3 and two third terminals 5 are arranged opposite each other in the front-back direction Y of the slot 11 and are signal terminals, the two signal terminals are independent of each other and are arranged separately.

[0063] like Figure 2 and Figure 4 As shown, the electrical connector 100 includes two latches 7, which are rotatably connected to both ends of the base 1. Both latches 7 are used to hold the docking member 200 when it is inserted into the base 1. Specifically, the latches 7 are rotatably mounted on the tower portion 1B and include a latching portion 71 and a retracting portion 72 disposed opposite each other in the vertical direction Z. The latches 7 have an unlocked state and a locked state. During the insertion of the docking member 200 into the slot 11, the docking member 200 presses downward against the retracting portion 72, causing the latches 7 to rotate from the unlocked state to the locked state. When the latches 7 are in the locked state, the latching portion 71 locks the docking member 200, and the retracting portion 72 pushes the docking member 200 upward when the latches 7 rotate open to switch from the locked state to the unlocked state, allowing the docking member 200 to be pulled out. In other embodiments, the base 1 may include only one latch 7.

[0064] like Figure 2 and Figure 7As shown, the electrical connector 100 also includes a metal key 8, which is sleeved on the foolproof part 16. The metal key 8 is used to strengthen the structural strength of the foolproof part 16. The metal key 8 includes an arc-shaped part 81 and side plate parts 82 connected to both sides of the arc-shaped part 81. The arc-shaped part 81 covers the top of the foolproof part 16, and the side plate parts 82 extend into the slot 11 and cover the left and right sides of the foolproof part 16, and are partially engaged in the two side walls 13. Specifically, the width of the arc-shaped part 81 in the front-back direction Y is greater than the width of the slot 11 in the front-back direction Y. That is, the arc-shaped part 81 will be partially engaged in the corresponding side walls 13 on both sides along the front-back direction Y. This arrangement can prevent the metal key 8 from scratching the inner wall of the slot 11.

[0065] like Figure 2 As shown, the electrical connector 100 also includes two metal reinforcing members 9, which are disposed in the two tower parts 1B in a one-to-one correspondence to strengthen the structural strength of the tower parts 1B, prevent the tower parts 1B from cracking, and reduce wear on the tower parts 1B during the insertion of the mating member 200 into the electrical connector 100.

[0066] The beneficial effects of this utility model are as follows:

[0067] 1. This utility model embeds two first terminals 3 and two second terminals 4 into a plastic body 2, so that the two first terminals 3 and two second terminals 4 constitute a terminal piece P. The plastic body 2 includes a first covering part 21 and two second covering parts 22. The two second covering parts 22 are connected to the front and rear sides of the first covering part 21. The first covering part 21 is embedded with two first main body parts 31, and the two second covering parts 22 are embedded with two second main body parts 41 in a one-to-one correspondence. The top of the second covering part 22 is higher than the first covering part 21. The first covering part 21 is located below the slot 11. The second covering part 22 is located on the front and rear sides of the slot 11. A partition part 24 extends upward from the top of each second covering part 22. A part of the second main body part 41 protrudes upward from the second covering part 22 outside the partition part 24. The partition part 24 separates the first terminal 3 and the second terminal 4 in the front-rear direction. In this way, the partition part 24 of the plastic body 2 separates the first terminal 3 and the second terminal 4 that are side by side in the front-rear direction, which helps to reduce crosstalk between the two. At the same time, it is not necessary to set a more complex partition structure on the base body 1, which helps to reduce the complexity of the mold and thus reduce the cost.

[0068] 2. The top of the separator 24 is not lower than the top of the first terminal 3, so as to better reduce crosstalk between the two.

[0069] 3. The plastic body 22 also includes a reinforcing part 25, which is used to strengthen the structural strength of the partition part 24. The width of the reinforcing part 25 in the left-right direction is not greater than the width of the partition part 24 in the left-right direction, and the width of the reinforcing part 25 in the left-right direction is not greater than the width of the first covering part 21 in the left-right direction. In this way, when the terminal piece P is inserted and installed, the reinforcing part 25 will not affect the positioning of the terminal piece P and the mounting groove 12.

[0070] 4. The first covering portion 21 protrudes downward from the second covering portion 22. A notch 23 is formed on the outer side of the first covering portion 21 away from the slot 11 and below the second covering portion 22. For the same side of the slot 11, a portion of the first main body portion 31 extends from the bottom of the first covering portion 21, and the first welding portion 32 extends toward the corresponding notch 23. A portion of the second main body portion 41 extends from the bottom of the second covering portion 22 and extends into the corresponding notch 23. The second welding portion 42 is located on the outer side of the second main body portion 41 away from the slot 11 and extends in a direction away from the slot 11. The notch 23 facilitates the welding of the first welding portion 32 and also facilitates the extension of the second welding portion 42.

[0071] 5. The arched connecting part 44 connects to the upper end of the second welding part 42. The second welding part 42 is located outside the corresponding notch 23 in the front-back direction. The arched connecting part 44 increases the distance between the second welding part 42 and the first welding part 32, effectively solving the problem of signal interference between the first welding part 32 and the second welding part 42.

[0072] 6. To facilitate the setting of the arched connection part 44, the side wall 13 is provided with a relief groove 132 corresponding to the arched connection part 44, so as to avoid interference between the side wall 13 and the arched connection part 44.

[0073] 7. The mounting groove 12 has an inner wall surface and an outer surface facing each other, one of which has a positioning protrusion 211 protruding and the other has a positioning recess 141 that cooperates with the positioning protrusion 211. When multiple terminal pieces P are engaged and fixed with the corresponding mounting groove 12 through the positioning cooperation of the positioning protrusion 211 and the positioning recess 141, this setting not only makes the positioning of the terminal pieces P more accurate after they are installed in the mounting groove 12, but also makes the installation more convenient.

[0074] 8. In order to make the positioning recess 141 or positioning protrusion 211 provided on the inner wall of the mounting groove 12 stronger, it is provided at the position of the connecting wall 14 below the slot 11. At the same time, this can also keep the terminal piece P in a centered relationship with the slot 11.

[0075] 9. Both sides of the plastic body 2 are provided with positioning protrusions 211. Therefore, in the same terminal module M, the positioning protrusions 211 on two adjacent terminal pieces P abut against each other, so that heat dissipation gaps D are formed on the front and rear sides of the positioning protrusions 211 of the adjacent terminal pieces P. The heat dissipation gaps D are used to facilitate the evaporation of flux gas during welding, and at the same time, they are conducive to heat dissipation during welding, so as to uniformly distribute the temperature during welding.

[0076] 10. Two adjacent terminal pieces P are engaged by the locking of the limiting protrusion 221 and the limiting recess 222, so that multiple terminal pieces P are aligned with each other. In order to facilitate the installation of the terminal module M, the limiting protrusion 221 is set higher than the positioning protrusion 211. Thus, the limiting protrusion 221 first engages with the receiving groove 131 to initially position the terminal module M, and the positioning protrusion 211 then engages with the positioning recess 141 to precisely position the terminal module M.

[0077] 11. The second covering part 22 is also set higher than the first covering part 21. Therefore, the limiting protrusion 221 and the limiting recess 222 are set in the second covering part 22, so that the limiting protrusion 221 can first cooperate with the mounting groove 12.

[0078] 12. The limiting recess 222 exposes the corresponding second main body 41 in the left-right direction, so as to position the second terminal 4 when the second terminal 4 is embedded in the plastic body 2, and at the same time to facilitate the adjustment of the impedance at the second main body 41.

[0079] 13. The upper and lower spring arms of the ring structure 43 provide two conductive paths for the second terminal 4. At the same time, the arched section 4322 of the lower spring arm helps to reduce the insertion force of the ring structure 43. The apex of the arched section 4322 is higher than the second contact part 434, resulting in less resistance and less insertion force in the insertion direction.

[0080] 14. The width of the upper spring arm gradually narrows from the second main body 41 to the guide section 433. The gradual narrowing of the upper spring arm can save materials and distribute stress more effectively while ensuring the strength of the ring structure 43.

[0081] 15. The arched section 4322 is located above the first terminal 3. On the one hand, the arched section 4322 can make the first terminal 3 and the second terminal 4 have a larger distance between them, thereby reducing crosstalk between them. On the other hand, the arched section 4322 can reduce the insertion force of the second terminal 4, making the insertion of the mating parts easier.

[0082] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. An electrical connector, characterized in that, include: A body extending in a left-right direction includes a slot and a plurality of mounting slots. The slot extends upward through the body to accommodate a mating member. The plurality of mounting slots are spaced apart in a left-right direction. Each mounting slot extends downward through the body and at least a portion thereof is located below the slot. Multiple terminal pieces are disposed in multiple mounting slots. Each terminal piece includes a plastic body and two first terminals and two second terminals embedded in the plastic body. The plastic body is housed in a corresponding mounting slot. The two first terminals are distributed on the front and rear sides of the slot, and the two second terminals are also distributed on the front and rear sides of the slot. The two first terminals are located between the two second terminals in the front-rear direction. Each first terminal includes a first body portion and a first contact portion and a first solder portion located on the upper and lower sides of the first body portion. Each second terminal includes a second body portion and a second contact portion and a second solder portion located on the upper and lower sides of the body portion. Both the first contact portion and the second contact portion are exposed in the slot, and the first contact portion is lower than the second contact portion. Both the first and second welding portions extend out of the mounting groove. The plastic body includes a first covering portion and two second covering portions. The two second covering portions are connected to the front and rear sides of the first covering portion. The first covering portion is embedded in the two first main body portions. The two second covering portions are embedded in the two second main body portions one-to-one. The top of the second covering portion is higher than the first covering portion. The first covering portion is located below the slot. The two second covering portions are located on the front and rear sides of the slot. A partition portion extends upward from the top of each second covering portion to form a partition portion. A part of the second main body portion protrudes upward from the second covering portion outside the corresponding partition portion. On the same side of the slot, the partition portion separates the corresponding first terminal and second terminal in the front-rear direction.

2. The electrical connector as described in claim 1, characterized in that: The top of the partition is not lower than the top of the first terminal, and the partition extends beyond the left and right sides of the corresponding first terminal and the left and right sides of the second terminal in the left and right direction.

3. The electrical connector as described in claim 1, characterized in that: The width of the first covering part in the left-right direction is not greater than the width of the second covering part in the left-right direction. The plastic body also includes a reinforcing part, which is connected to the partition part and the side of the second covering part facing the slot in the front-back direction. The width of the reinforcing part in the left-right direction is not greater than the width of the partition part in the left-right direction, and the width of the reinforcing part in the left-right direction is not greater than the width of the first covering part in the left-right direction.

4. The electrical connector as described in claim 1, characterized in that: The first covering portion protrudes downward from the second covering portion. A notch is formed on the outer side of the first covering portion away from the slot and below the second covering portion. With respect to the same side of the slot, a portion of the first main body portion extends from the bottom of the first covering portion and the first weld portion extends toward the corresponding notch. A portion of the second main body portion extends from the bottom of the second covering portion and extends into the corresponding notch. The second weld portion is at least partially located on the outer side of the second main body portion away from the slot and extends in a direction away from the slot.

5. The electrical connector as described in claim 4, characterized in that: The second terminal also includes an arched connecting portion connecting the second main body portion and the second welding portion. The arched connecting portion connects to the upper end of the second welding portion, and the second welding portion is at least partially located outside the corresponding notch in the front-back direction.

6. The electrical connector as described in claim 5, characterized in that: The base also includes two side walls that define the width of the slot. A portion of each mounting slot is recessed upward from the bottom wall of the side wall. Each side wall has multiple recessed clearance slots at the position corresponding to the arched connection part on the side wall facing away from the slot. The multiple clearance slots are arranged in a front-back direction in relation to the multiple mounting slots. The clearance slots connect to the corresponding mounting slots and penetrate downward through the side wall.

7. The electrical connector as claimed in claim 1, characterized in that: The plastic body has two oppositely arranged outer surfaces in the left-right direction, and each mounting groove has two oppositely arranged inner wall surfaces in the left-right direction. One of the inner wall surfaces and the outer surface surface facing it has a positioning protrusion, and the other has a positioning recess that cooperates with the positioning protrusion.

8. The electrical connector as claimed in claim 7, characterized in that: The base includes a connecting wall located directly below the slot. A portion of each mounting slot is formed by an upward recess from the lower surface of the connecting wall. Positioning recesses or positioning protrusions are positioned in the left-right direction corresponding to the positions of the connecting wall.

9. The electrical connector as claimed in claim 7, characterized in that: A positioning recess is provided on the inner wall surface, and a positioning protrusion is provided on both outer surfaces of the plastic body. Multiple terminal pieces are stacked in the left-right direction to form a terminal module. Multiple terminal modules are arranged one-to-one in multiple mounting slots. The positioning protrusions on two adjacent terminal pieces on the same terminal module abut against each other, so that a heat dissipation gap is formed on the front and back sides of the positioning protrusion of the adjacent terminal pieces, and the heat dissipation gap penetrates the plastic body.

10. The electrical connector as claimed in claim 7, characterized in that: Each plastic body has at least one limiting protrusion on one of its outer surfaces and at least one limiting recess on the other outer surface, with the limiting protrusion being higher than the positioning protrusion. Two adjacent terminal pieces are engaged by the locking fit of the limiting protrusion and the limiting recess, so that multiple terminal pieces are stacked and fixed to form a terminal module. The inner wall surface has a receiving groove corresponding to the limiting protrusion, which extends downward through the base body. When the terminal module is inserted upward into the corresponding mounting groove, the limiting protrusion first engages with the receiving groove to initially position the terminal module, and then the positioning protrusion engages with the positioning recess to precisely position the terminal module.

11. The electrical connector as claimed in claim 10, characterized in that: For the same plastic body, both second covering parts are provided with limiting protrusions and limiting recesses, and the limiting protrusions and limiting recesses provided on the two second covering parts are respectively symmetrically arranged relative to the first covering part.

12. The electrical connector as claimed in claim 10, characterized in that: The limiting recess exposes the corresponding second main body in the left-right direction, which is used to position the second terminal when the second terminal is embedded in the plastic body.

13. The electrical connector as claimed in claim 1, characterized in that: The second terminal includes an annular structure connected to the top of the second main body, and a second contact portion is formed on the annular structure. The annular structure includes a first spring arm, a second spring arm, and a guide section connecting the first spring arm and the second spring arm. The first spring arm and the second spring arm both extend upward from the second main body and toward the side closer to the slot. The end of the second spring arm connected to the second main body is positioned closer to the slot in the front-rear direction than the end of the first spring arm connected to the second main body. The second contact portion is formed at the connection between the guide section and the second spring arm. The guide section is used to guide the insertion of the mating member. The second spring arm includes an extension section, an arched section, and a connecting section. The extension section extends upward from the second main body. The arched section is connected between the extension section and the connecting section and arches toward the first spring arm. The connecting section is connected between the guide section and the arched section. The apex of the arched section is higher than the second contact portion.

14. The electrical connector as claimed in claim 13, characterized in that: Looking at the second terminal from left to right, the width of the first spring arm gradually narrows from the second main body to the guide section, and the arched section is located above the first terminal.

15. The electrical connector as claimed in claim 1, characterized in that: Multiple terminal pieces are stacked in the left-right direction to form a terminal module, and multiple terminal modules are arranged one-to-one in multiple mounting slots; the electrical connector also includes multiple third terminals inserted into the base, each third terminal having a third contact portion, and multiple third contacts are arranged on the front and rear sides of the slot. On the same side of the front and rear sides of the slot, the third contacts are arranged in the same row as the first contacts in the left-right direction, and multiple third contacts are arranged between any two adjacent terminal modules.

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