Electrical connector

Abstract

The utility model discloses an electric connector, including a seat body and be located seat body's multiple terminal sheet, and the seat body is equipped with the slot, and every terminal sheet includes plastic body and two first terminal and two second terminal of inlaying in plastic body, and the first terminal includes first main part, first contact part and first welding part, and the second terminal includes second main part, second contact part, second welding part and arcuate connecting part, and the arcuate connecting part is connected between second welding part and second main part, and the plastic body includes two second cladding and the first cladding of protruding to the second cladding one in the downward, and the notch is formed to the outside of first cladding away from the slot and the below of second cladding, and for the same side of the slot, and the first welding part extends to the corresponding notch, and the second welding part extends from the lower end of arcuate connecting part to the direction away from the slot, to pull apart the distance between the first and second welding part on the same terminal sheet and located the same side of the slot, and the signal interference between the both is reduced.

Description

[Technical Field]

[0001] This utility model relates to the field of connectors, and more particularly to an electrical connector that is easy to solder and can reduce signal interference. [Background Technology]

[0002] In the field of connectors, a high-speed communication memory card edge connector is disclosed in the prior art, comprising: an insulating body having a longitudinally elongated slot recessed from top to bottom for inserting an electronic module, wherein multiple terminal slots are respectively provided in the two longitudinally elongated sidewalls on both sides of the slot; and multiple terminals, which are received 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, the base of a lower terminal and the base of 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.

[0003] However, this prior art has some problems. In the position of the double-layer terminal, since the lower terminal is lower than the upper terminal, the base of the lower terminal is lower than the base of the upper terminal. However, in this prior art, the plug covers the upper and lower terminals at the same level. This means that in order to cover the base of the lower terminal, the plug needs to be set to correspond to the base of the lower terminal. That is, the plug is set at a relatively lower position of the upper terminal. The upper terminal cannot reserve enough space for the soldering part of the upper terminal to extend. This makes it easy for the soldering part of the upper terminal and the soldering part of the lower terminal to be close together. During soldering, solder bridging is likely to occur. At the same time, signal interference problems occur between the soldering parts of the upper terminal and the soldering parts of the lower terminal.

[0004] Therefore, it is necessary to provide an electrical connector that is easy to solder and can reduce signal interference in order to overcome the above-mentioned defects. [Utility Model Content]

[0005] In view of the problems in the background technology, the purpose of this utility model is to provide an electrical connector that is easy to solder and can reduce signal interference.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an electrical connector, comprising: a base extending in a left-right direction, including a slot and a plurality of mounting grooves located below the slot, the slot for accommodating a mating part, each mounting groove having two opposing inner wall surfaces in the left-right direction; a plurality of terminal pieces disposed in the plurality of mounting grooves, each terminal piece including a plastic body and two first terminals and two second terminals embedded in the plastic body, 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, the two first terminals being located between the two second terminals in the front-rear direction, each first terminal including a first main body portion and a first contact portion and a first welding portion located on the upper and lower sides of the first main body portion, each second terminal including a second main body portion, a second contact portion, a second welding portion and an arched connecting portion, the second contact portion and the second welding portion being located on the upper and lower sides of the second main body portion, the arched connecting portion being connected to the second welding portion. Between the upper end of the first body and the second body, 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 weld portion and the second weld portion extend out of 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. The two second covering portions are embedded in the two second body portions one-to-one. The first covering portion is located below the slot. The first covering portion protrudes downward from the second covering portion. The top of the second covering portion is higher than the first 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. For the same side of the slot, a part of the first body portion extends from the bottom of the first covering portion, and the first weld portion extends toward the corresponding notch. A part of the second body portion extends from the bottom of the second covering portion and extends into the corresponding notch. The second weld portion extends from the lower end of the arched connecting portion toward the direction away from the slot.

[0007] Furthermore, the second welded part is located outside the corresponding notch in the front-to-back direction.

[0008] 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 a recessed clearance groove at the position corresponding to the arched connection on the side wall facing away from the slot. The clearance groove connects to the corresponding mounting slot and extends downward through the side wall.

[0009] Furthermore, a partition is formed extending upward from the top of each second covering portion, and a portion of the second main body portion protrudes upward from the second covering portion outside the partition, the partition separating the first terminal and the second terminal in the front-rear direction.

[0010] 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.

[0011] 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.

[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. The opposing positioning protrusions on two adjacent terminal pieces abut against each other, so that a heat dissipation gap is formed on the front and rear sides of the positioning protrusions of the adjacent terminal pieces, and the heat dissipation gap penetrates the plastic sheet in the vertical direction.

[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; adjacent terminal pieces are engaged by 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, and the receiving groove 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.

[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 end of the second main body, and a second contact portion is formed on the annular structure; the annular structure includes an upper spring arm, a lower spring arm, and a guide section connecting the upper spring arm and the lower spring arm, the upper spring arm extends upward from the second main body and toward the side near the slot, the second contact portion is formed at the connection between the guide section and the upper spring arm, the guide section is used to guide the insertion of the mating member, the lower 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 upper spring arm, the connecting section is connected between the guide section and the arched section, wherein 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 upper spring arm gradually narrows from the second main body to the guide section, and the width of the connecting section is greater than the width of the top of the upper spring arm; 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, which are connected to the front and rear sides of the first covering portion. The first covering portion is located below the slot and protrudes downward from the second covering portions. A notch is formed on the outer side of the first covering portion away from the slot and below the second covering portion. For the same side of the slot, a portion of the first main body extends from the bottom of the first covering portion, and the first solder portion extends toward the corresponding notch. A portion of the second main body extends from the bottom of the second covering portion and extends into the corresponding notch. The second solder portion is connected to the lower end of the arched connecting portion, and the upper end of the arched connecting portion is connected to the second main body. The second solder portion is located on the outer side of the second main body away from the slot and extends in a direction away from the slot, which helps to provide sufficient extension space for the second solder portion to increase the distance between the first solder portion and the second solder portion on the same side of the slot on the same terminal piece. At the same time, it effectively reduces signal interference between the first solder portion and the second solder portion. This notch is beneficial for soldering the first solder portion and solving the problem of solder creep of the second solder portion. [Attached Image Description]

[0022] Figure 1This is a perspective view of the electrical connector of this utility model electrically connecting a mating part and a circuit board.

[0023] Figure 2 for Figure 1 Exploded view of CEC connectors;

[0024] Figure 3 for Figure 2 A perspective view of the middle terminal piece and part of the third terminal;

[0025] Figure 4 for Figure 2 A stereoscopic view of the CEC connector with the hidden ear clips visible from another perspective;

[0026] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0027] Figure 6 for Figure 5 A schematic diagram showing the terminal module inserted at the bottom of the base from another perspective;

[0028] Figure 7 for Figure 1 A top view of the CEC connector and a partial enlarged view of its components;

[0029] Figure 8 for Figure 1 Bottom view of the CEC connector;

[0030] Figure 9 for Figure 8 A magnified view of a section at point B in the middle;

[0031] Figure 10 for Figure 8 A cross-sectional view taken along the CC direction after the CEC connector is inserted into the mating part;

[0032] Figure 11 for Figure 10 A schematic diagram showing the middle terminal module before it is inserted upwards into the base;

[0033] Figure 12 for Figure 8 Cross-sectional view of the CEC connector along DD;

[0034] Figure 13 for Figure 2 3D view of the middle terminal module;

[0035] Figure 14 for Figure 13 A 3D view of the middle terminal piece;

[0036] Figure 15 for Figure 14 A three-dimensional view of the middle terminal piece from another perspective;

[0037] Figure 16 for Figure 15 Front view of the middle terminal piece.

[0038] Explanation of icon numbers:

[0039] Mounting slot 12 Side wall 13 Containment Container 131 132 Connecting wall 14 Positioning recess 141 15 supporting ribs Error prevention part 16 Tower 1B Terminal module M Terminal P Plastic body 2 First covering part 21 Positioning convex portion 211 Second covering part 22 Limiting convex part 221 Limiting recess 222 Gap 23 Partition 24 Heat dissipation gap D Strengthening Department 25 First terminal 3 First main body section 31 First welding section 32 Main arm 33 First contact section 331 Sub-arm 34 Second terminal 4 Second Main Body Section 41 Second welding section 42 Ring structure 43 First spring arm 431 Second missile arm 432 Extension 4321 Arched section 4322 Connector segment 4323 Guide section 433 Second contact part 434 Arched connection 44 Third terminal 5 Third Main Body Section 51 Third Welding Section 52 Third contact part 53 Connector 6 Earring 7 Buckle 71 Card Refund Department 72 Metallic bond 8 Arc-shaped part 81 Side panel 82 Metal reinforcement 9 200 docking parts Circuit board 300

Detailed Implementation Methods

[0040] 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.

[0041] 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.

[0042] like Figure 1 and Figure 2 As shown, the electrical connector 100 of this utility model is connected to a mating member 200 and a circuit board 300. This embodiment uses a DDR6 connector as an example, but it is not limited to DDR6. The mating member 200 is specifically an electronic card. Of course, in other embodiments, the mating member 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. In this embodiment, the electrical connector 100 is mounted downward on the circuit board 300, and the mating member 200 is inserted downward into the electrical connector 100.

[0043] 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.

[0044] like Figure 2 and Figure 4As 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.

[0045] 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.

[0046] like Figure 4 , Figure 5 and Figure 7 As 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.

[0047] like Figure 5 and Figure 10 as well as Figure 11As 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.

[0048] 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.

[0049] like Figure 4 and Figure 13 As 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 terminal pieces P stacked together. 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.

[0050] like Figure 11 and Figure 14As 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.

[0051] like Figure 14 and Figure 15 As 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. The second welding part 42 extends out of the mounting groove 12 and has a ground. Most of the second main body 41 is covered by the plastic body 2. The second welding part 42 is located at the bottom end 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.

[0052] like Figure 10 , Figure 11 and Figure 14As 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.

[0053] 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.

[0054] like Figure 13 , Figure 14 and Figure 15As 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] like Figure 2 As shown, the electrical connector 100 also includes two metal reinforcing members 9, which are arranged one-to-one in the two tower parts 1B 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.

[0064] The beneficial effects of this utility model are as follows:

[0065] 1. This utility model embeds two first terminals and two second terminals 4 into a plastic body 2, such that the two first terminals 3 and the 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 located below the slot 11 and protrudes downward from the second covering parts 22. A notch 23 is formed on the outer side of the first covering part 21 away from the slot 11 and below the second covering part 22. For the same side of the slot 11, a portion of the first main body 31 extends from the bottom of the first covering part 21, and the first welding part 32 extends toward the corresponding notch 23. A portion of the second main body 41 extends from the second covering part 22. The bottom of the cover portion 22 extends out and into the corresponding notch 23. The second solder portion 42 is connected between the lower end of the arched connecting portion 44 and the second main body portion 41. The second solder portion 42 extends from the lower end of the arched connecting portion 44 in a direction away from the slot 11, which helps to provide sufficient extension space for the second solder portion 42 to increase the distance between the first solder portion 32 and the second solder portion 42 located on the same side of the slot 11 on the same terminal piece P. At the same time, it effectively reduces signal interference between the first solder portion 32 and the second solder portion 42. The notch 23 is beneficial to the soldering of the first solder portion 32 and the solder creep problem of the second solder portion 42. The second solder portion 42 is located outside the corresponding notch 23 in the front-back direction, further increasing the distance between the first solder portion 32 and the second solder portion 42.

[0066] 2. 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.

[0067] 3. The separator 24 extends upward from the top of the second cover portion 22 to separate the first terminal 3 and the second terminal 4, thereby reducing crosstalk between the portion of the second terminal 4 above the second cover portion 22 and the first terminal 3.

[0068] 4. The top of the partition 24 is not lower than the top of the first terminal 3, which can further reduce the crosstalk between the portion of the second terminal 4 above the second covering portion 22 and the first terminal 3.

[0069] 5. The plastic body 22 also includes a reinforcing part 25, which is used to strengthen the structural strength of the partition 24. The width of the reinforcing part 25 in the left-right direction is not greater than the width of the partition 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 module M is inserted and installed, the reinforcing part 25 will not affect the positioning of the terminal module M and the mounting groove 12.

[0070] 6. The mounting groove 12 has an inner wall surface and an outer surface facing it, one of which has a positioning protrusion 211 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.

[0071] 7. 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.

[0072] 8. 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 a heat dissipation gap D is formed on the front and rear sides of the positioning protrusions 211 of the adjacent terminal pieces P. The heat dissipation gap D is used to facilitate the evaporation of flux gas during welding, and at the same time, it is conducive to heat dissipation during welding, so as to uniformly heat the welding temperature.

[0073] 9. 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.

[0074] 10. 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.

[0075] 11. 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.

[0076] 12. 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.

[0077] 13. 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.

[0078] 14. 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 it easier to insert the mating member 200.

[0079] 15. Multiple third terminals 5 are arranged between two adjacent terminal modules M, which facilitates higher density data transmission of the electrical connector 100 of this invention.

[0080] 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 the left-right direction includes a slot and a plurality of mounting slots located below the slot. The slot is used to accommodate a mating part, and each mounting slot has two opposing inner wall surfaces in the left-right direction. 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 two first terminals are distributed on the front and rear sides of the slot, and the two second terminals are 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, a second contact portion, a second solder portion, and an arched connecting portion. The second contact portion and the second solder portion are located on the upper and lower sides of the second body portion. The arched connecting portion connects the upper end of the second solder portion to the second 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. The first solder portion and the second contact portion are located between the upper end of the second solder portion and the second body portion. The second welding portion extends beyond 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 first covering portion is located below the slot. The first covering portion protrudes downward from the second covering portion. The top of the second covering portion is higher than the first 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. For the same side of the slot, a part of the first main body portion extends from the bottom of the first covering portion and the first welding portion extends toward the corresponding notch. A part of the second main body portion extends from the bottom of the second covering portion and extends into the corresponding notch. The second welding portion extends from the lower end of the arched connecting portion toward the direction away from the slot.

2. The electrical connector as described in claim 1, characterized in that: The second welded part is located outside the corresponding notch in the front-to-back direction.

3. The electrical connector as described in claim 1, 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 a recessed clearance groove at the position of the arched connection corresponding to the side wall of the slot. The clearance groove connects to the corresponding mounting slot and extends downward through the side wall.

4. The electrical connector as described in claim 1, characterized in that: A partition extends upward from the top of each second covering portion to form a partition portion, and a portion of the second main body portion protrudes upward from the second covering portion outside the partition portion, the partition portion separating the first terminal and the second terminal in the front-back direction.

5. The electrical connector as described in claim 4, 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.

6. The electrical connector as described in claim 4, 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.

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 8, 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. The opposing positioning protrusions on two adjacent terminal pieces abut against each other, so that a heat dissipation gap is formed on the front and rear sides of the positioning protrusions of the adjacent terminal pieces. The heat dissipation gap penetrates the plastic sheet in the vertical direction.

10. The electrical connector as claimed in claim 8, 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 formed on the annular structure. The annular structure includes an upper spring arm, a lower spring arm, and a guide section connecting the upper spring arm and the lower spring arm. The upper spring arm extends upward from the second main body and toward the side near the slot. The second contact portion is formed at the connection between the guide section and the upper spring arm. The guide section is used to guide the insertion of the mating member. The lower 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 upper 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: Observing the second terminal from left to right, the width of the upper spring arm gradually narrows from the second main body to the guide section, and the width of the connecting section is greater than the width of the top of the upper spring arm. 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. 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 is provided with a third contact portion. 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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