Electric connector

Abstract

The invention discloses an electric connector, which comprises a metal shell and a plurality of terminal modules, and is characterized in that the metal shell comprises a first metal lamination and a second metal lamination, the first metal lamination and the second metal lamination are formed by stacking a plurality of metal pieces, the first metal lamination comprises a first accommodating hole, the second metal lamination comprises a second accommodating hole, the maximum size of the first accommodating hole in the front-back direction is larger than that of the second accommodating hole; the terminal module comprises an insulating part and a signal terminal fixed to the insulating part, the signal terminal comprises a first section and a second section, the first section is contained in the first containing hole, and the second section is contained in the second containing hole. According to the invention, the sizes of the first accommodating hole and the second accommodating hole are more accurate and can be better matched with the shape of the signal terminal, so that the shielding effect of the metal shell is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to an electrical connector, in particular to an electrical connector with a metal shell formed by stacking metal pieces. BACKGROUND

[0002] Metal Injection Molding, MIM for short, is a method of mixing metal powder with binder for injection molding. It first mixes the selected powder with the binder, then granulates the mixture and injection molds the desired shape, and then removes the binder through debinding and sintering to obtain the desired metal product. In the field of electrical connectors, in order to achieve better shielding effect, using metal injection molding method to form metal shell has become a development direction in the industry.

[0003] However, the metal shell formed by metal injection molding will be deformed to a certain extent due to the sintering process, which will cause a certain deviation between the actual size of the receiving hole of the metal shell and the preset size. This deviation will make the shape of the receiving hole unable to match the shape of the terminal module, thereby affecting the actual shielding effect of the metal shell and further affecting the signal integrity of the electrical connector.

[0004] Therefore, it is necessary to design a new electrical connector to overcome the above problems. SUMMARY

[0005] The purpose of the present application is to provide an electrical connector formed by stacking multiple metal pieces to form a metal shell, so that the sizes of the first receiving hole and the second receiving hole are more accurate and can better match the shape of the signal terminal, thereby improving the shielding effect of the metal shell.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: an electrical connector, characterized in that it comprises: a metal shell comprising a first metal stack and a second metal stack stacked vertically, the first metal stack comprising at least two first metal pieces stacked vertically and a plurality of first receiving holes, the second metal stack comprising at least two second metal pieces stacked vertically and a plurality of second receiving holes, the first receiving holes and the second receiving holes being vertically connected, the diameters of the first receiving holes being consistent from top to bottom, the diameters of the second receiving holes being consistent from top to bottom, and the size of the first receiving holes being larger than the size of the second receiving holes in the front-back direction; a plurality of terminal modules received in the metal shell, each terminal module comprising an insulating piece and a signal terminal fixed to the insulating piece, the signal terminal comprising a first segment and a second segment, the first segment being received in the first receiving hole, and the second segment being received in the second receiving hole, the maximum size of the first segment being larger than the maximum size of the second segment in the front-back direction.

[0007] Further, the cable assembly includes a plurality of signal lines and ground lines, the signal terminal includes a third section extending rearward from the second section and a fourth section extending rearward from the third section, at least part of the signal lines are located below the fourth section and connected to the fourth section, the second metal stack includes a support section and a plurality of ground connection sections, the support section supports the insulating member, the ground connection sections are connected to the ground lines, adjacent two ground connection sections have a clearance slot therebetween, the clearance slot is located below the fourth section, and the clearance slot is used for allowing the signal lines to pass through.

[0008] Further, the plurality of terminal modules are arranged in rows along the left-right direction and arranged in two rows along the front-rear direction, the plurality of signal terminals include first signal terminals and second signal terminals, the front row of terminal modules includes the second signal terminals, the rear row of terminal modules includes the first signal terminals, the plurality of signal lines are arranged in two rows along the up-down direction, one row of signal lines is located below the fourth section of the first signal terminal and connected to the fourth section of the first signal terminal, and one row of signal lines is located above the fourth section of the second signal terminal and connected to the fourth section of the second signal terminal, and the two rows of signal lines are provided with a shielding member.

[0009] Further, the metal shell includes a third metal stack and a fourth metal stack stacked upward in sequence from the second metal stack, the third metal stack includes at least two third metal members stacked upward and a plurality of third receiving holes arranged in two rows along the front-rear direction, the fourth metal stack includes at least two fourth metal members stacked upward and a plurality of fourth receiving holes arranged in one row along the front-rear direction, the plurality of first receiving holes are arranged in two rows along the front-rear direction, the plurality of second receiving holes are arranged in two rows along the front-rear direction, the corresponding first receiving holes, second receiving holes, third receiving holes and fourth receiving holes of the front row are in communication with each other to form a row of second receiving slots, the corresponding first receiving holes, second receiving holes and third receiving holes of the rear row are in communication with each other to form a row of first receiving slots, the plurality of terminal modules are arranged in rows along the left-right direction and arranged in two rows along the front-rear direction, the terminal modules of the front row are received in the second receiving slots, and the terminal modules of the rear row are received in the first receiving slots.

[0010] Further, the metal shell includes a plurality of first receiving slots arranged side by side along the left-right direction, the first receiving slots are used for receiving one terminal module, adjacent two first receiving slots are separated by one conductive partition, adjacent two conductive partitions extend toward each other with a support section, for two support sections belonging to the adjacent two conductive partitions, a slot is provided between the two support sections, and the two support sections together support one insulating member upward, the signal terminal includes a third section extending rearward from the second section, the third section is fixed to the insulating member, and the slot is located below the third section.

[0011] Further, the shielding member includes a shielding section located directly above the third section, along the up-down direction, the distance between the third section and the shielding section is greater than the distance between the third section and the support section.

[0012] Further, the cable assembly includes a plurality of signal lines and a ground line, the signal terminal includes a third section extending from the second section rearward and a fourth section extending from the third section rearward, the signal lines are located below the fourth section and connected to the fourth section, the conductive fence has a ground connecting portion connected to the ground line, the ground connecting portion has a clearance slot between two adjacent ground connecting portions, the clearance slot is located below the fourth section, the electrical connector includes a plurality of insulating stoppers, each of the insulating stoppers includes a stopper body and a blocking portion, the blocking portion is arranged in the slot, the stopper body is fixed in the clearance slot, a fixing adhesive is fixed at a connection between the signal line and the fourth section, the fixing adhesive is at least partially located in the clearance slot and connected to the stopper body, the slot is connected to the second receiving hole and the clearance slot, and the blocking portion blocks the fixing adhesive from entering the second receiving hole.

[0013] An electrical connector includes: a metal housing including a first metal stack and a second metal stack stacked in a vertical direction, the first metal stack including at least two first metal pieces stacked in the vertical direction and a plurality of first receiving holes, the second metal stack including at least two second metal pieces stacked in the vertical direction and a plurality of second receiving holes, the first receiving holes and the second receiving holes being connected in the vertical direction, a diameter of the first receiving holes being uniform from top to bottom, a diameter of the second receiving holes being uniform from top to bottom, and a size of the first receiving holes being larger than a size of the second receiving holes in a front-rear direction; and a plurality of terminal modules received in the metal housing, each of the terminal modules including an insulating piece and two signal terminals fixed to the insulating piece, the two signal terminals fixed to the same insulating piece forming a signal terminal pair, each of the signal terminal pairs including a first body portion and a second body portion, the first body portion being received in the first receiving hole, the second body portion being received in the second receiving hole, the first body portion having a first edge at a front end and a second edge at a rear end, the second body portion having a third edge at the front end and a fourth edge at the rear end, and a distance between the first edge and the second edge being larger than a distance between the third edge and the fourth edge in the front-rear direction.

[0014] An electrical connector includes: a metal housing including a first metal stack and a second metal stack stacked in a vertical direction, the first metal stack including at least two first metal pieces stacked in the vertical direction and a plurality of first receiving holes, the second metal stack including at least two second metal pieces stacked in the vertical direction and a plurality of second receiving holes, the first receiving holes and the second receiving holes being connected in the vertical direction, and the first receiving holes being misaligned with the second receiving holes in a front-rear direction; and a plurality of terminal modules arranged side by side in a left-right direction, each of the terminal modules including an insulating piece and a signal terminal fixed to the insulating piece, the signal terminal including a second section and a first section extending downward from the second section, the second section being received in the second receiving hole, and the first section being received in the first receiving hole and configured to be connected to an electronic component.

[0015] Further, the first accommodating hole comprises a first slot wall and a second slot wall opposite to each other, the second accommodating hole comprises a third slot wall and a fourth slot wall opposite to each other, the first slot wall and the third slot wall are flush in the up-down direction, the second slot wall exceeds the fourth slot wall backward, the first section extends downward and backward from the second section, and the maximum size of the first section is greater than that of the second section in the front-back direction.

[0016] Further, the first section comprises a first section and a second section connected to each other, the first section exceeds the second section forward, and the second section exceeds the second section backward, and the distance between the frontmost end of the first section and the second section is less than the distance between the rearmost end of the second section and the second section in the front-back direction.

[0017] Compared with the prior art, the electric connector provided by the application has the following beneficial effects: The size of the first accommodating hole is greater than that of the second accommodating hole in the front-back direction, and the size of the first section of the signal terminal is greater than that of the second section, that is, the sizes of the first accommodating hole and the second hole can match the sizes of the first section and the second section of the signal terminal, thereby improving the shielding effect of the metal shell on the first signal terminal. The metal shell is stacked by the first metal piece and the second metal piece, and both the first metal piece and the second metal piece are separately formed, which means that the forming processes of the first accommodating hole and the second accommodating hole do not affect each other, which facilitates the design of the sizes and positions of the first accommodating hole and the second accommodating hole. In addition, compared with the first accommodating hole and the second accommodating hole of the metal shell formed by metal powder injection molding, the stacking forming of the first metal piece and the second metal piece does not have the problem of shrinkage of the metal shell after metal powder injection molding, and the precision of the first accommodating hole and the second accommodating hole is higher, and the sizes of the first accommodating hole and the second accommodating hole are easier to control. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the electric connector; Figure 2 It is an exploded view of the electric connector; Figure 3 It is a schematic view of the shell 1 of the electric connector; Figure 4 It is an exploded view of the shielding assembly, the terminal module and the cable assembly; Figure 5 It is Figure 1 It is a sectional view along the line A-A; Figure 6 It is Figure 1 It is a sectional view along the line B-B; Figure 7 It is Figure 1 It is a sectional view along the line C-C; Figure 8 It is Figure 1 It is a sectional view along the line D-D; Figure 9 is a schematic view of another embodiment.

[0019] Explanation of the reference numerals in the detailed description: Electric connector 100 Metal housing 1 First metal stack 11 First metal piece 111 First receiving hole 112 First slot wall 1121 Second slot wall 1122 Fixing slot 113 Second metal stack 12 Second metal piece 121 Second receiving hole 122 Third slot wall 1221 Fourth slot wall 1222 Third metal stack 13 Third metal piece 131 Third receiving hole 132 Fourth metal stack 14 Fourth metal piece 141 Fourth receiving hole 142 Fifth metal stack 15 Fifth metal piece 151 Fifth receiving hole 152 First receiving slot 16 Second receiving slot 17 Conductive fence 18 Support part 181 Groove 182 Ground terminal part 183 Relief slot 184 Terminal module 2 Insulating piece 21 First part 211 Second part 212 Signal terminal 22 First section 221 First section 2211 Second section 2212 Second section 222 Third section 223 Fourth section 224 First terminal module 2A First insulating piece 21A First signal terminal 22A Second terminal module 2B Second insulating piece 21B Second signal terminal 22B Signal terminal pair 23 First body part 231 First edge 2311 Second edge 2312 Second body part 232 Third edge 2321 Fourth edge 2322 Insulating stop piece 3 Stop body 31 Blocking part 32 Fixing part 33 Shielding piece 4 First shielding piece 41 Shielding part 411 Shielding body 4111 Elastic arm 4112 Avoidance opening 4113 Connecting part 412 First window 4121 Second shielding piece 42 Second window 421 Shielding part 422 Third shielding piece 43 Fixing glue 5 Cable assembly 6 Signal line 61 Ground line 62 Cable body 63 Insulating layer 63 Shielding structure 64 Electronic component 7 Maximum size of first section L1 Maximum size of second section L2 Distance between third section and shielding part L3 Distance between third section and support part L4 Distance between first edge and second edge S1 Distance between third edge and fourth edge S2 DETAILED DESCRIPTION

[0020] In order to better understand the purpose, structure, features and effects of the present application, the present application will be further described in conjunction with the drawings and specific embodiments.

[0021] The electric connector 100 defines the left-right direction as the X-axis, the left direction as the positive direction of the X-axis, the front-rear direction as the Y-axis, the front direction as the positive direction of the Y-axis, the up-down direction as the Z-axis, and the upward direction as the positive direction of the Z-axis.

[0022] As shown in Figure 1 , Figure 2 and Figure 4 , the electric connector 100 comprises a metal shell 1, a plurality of terminal modules 2, an insulating stopper 3, a shielding member 4, a fixing glue 5 and a cable assembly 6.

[0023] As shown in Figure 2 , Figure 3 and Figure 5 , the metal shell 1 comprises a first metal layer 11, a second metal layer 12, a third metal layer 13, a fourth metal layer 14 and a fifth metal layer 15 stacked upward in sequence, the first metal layer 11 comprises at least two first metal pieces 111 stacked upward and a first receiving hole 112 arranged in two rows in the front-rear direction, the second metal layer 12 comprises at least two second metal pieces 121 stacked upward and a second receiving hole 122 arranged in two rows in the front-rear direction, the third metal layer 13 comprises at least two third metal pieces 131 stacked upward and a third receiving hole 132 arranged in two rows in the front-rear direction, the fourth metal layer 14 comprises at least two fourth metal pieces 141 stacked upward and a fourth receiving hole 142 arranged in one row, and the fifth metal layer 15 comprises at least two fifth metal pieces 151 stacked upward and a fifth receiving hole 152 arranged in one row, the front ends of the first metal layer 11, the second metal layer 12, the third metal layer 13, the fourth metal layer 14 and the fifth metal layer 15 are aligned, and the lengths of the five metal layers in the front-rear direction gradually decrease from bottom to top.

[0024] It is worth noting that in the present embodiment, the metal shell comprises five metal layers, and except that the second metal layer 12 is formed by stacking two second metal pieces 121, the other metal layers are formed by stacking three metal pieces. In other embodiments, the number of metal layers of the metal shell only needs to be greater than or equal to two, and the number of metal pieces included in each metal layer can also be freely adjusted as needed The first receiving hole 112 and the second receiving hole 122 are communicated along the up-down direction, and the first receiving hole 112 is arranged in a staggered manner with the second receiving hole 122 as viewed from below to above, the size of the first receiving hole 112 is larger than the size of the second receiving hole 122, specifically, the first receiving hole 112 includes first and second slot walls 1121 and 1122 opposite to each other in front and back directions, and the second receiving hole 122 includes third and fourth slot walls 1221 and 1222 opposite to each other in front and back directions, the third slot wall 1221 is flush with the first slot wall 1121 in the up-down direction, and the second slot wall 1122 extends backward beyond the fourth slot wall 1222, the size of the first receiving hole 112 refers to the distance between the first and second slot walls 1121 and 1122, and the size of the second receiving hole 1122 refers to the distance between the third and fourth slot walls 1221 and 1222.

[0025] The first receiving hole 112 and the second receiving hole 122 are communicated along the up-down direction, and the first receiving hole 112 is arranged in a staggered manner with the second receiving hole 122 and the first receiving hole 112 is larger than the second receiving hole 122, specifically, the first receiving hole 112 includes first and second slot walls 1121 and 1122 opposite to each other in front and back directions, and the second receiving hole 122 includes third and fourth slot walls 1221 and 1222 opposite to each other in front and back directions, the third slot wall 1221 is flush with the first slot wall 1121 in the up-down direction, and the second slot wall 1122 extends backward beyond the fourth slot wall 1222.

[0026] In other embodiments, the first slot wall 1121 can extend forward beyond the second slot wall 1122, and the second slot wall 1122 is flush with the fourth slot wall 1222, or the first slot wall 1121 extends backward beyond the second slot wall 1122, and the fourth slot wall 1222 extends backward beyond the second slot wall 1122, or the first slot wall 1121 extends forward beyond the second slot wall 1122, and the second slot wall 1122 extends forward beyond the fourth slot wall 1222, as long as the first receiving hole 112 and the second receiving hole 122 match the shape of the terminal module 2.

[0027] The metal shell 1 includes a plurality of receiving grooves, the plurality of receiving grooves are arranged in a row along the left-right direction and arranged in a row along the front-back direction to form a row of second receiving grooves 17 and a row of first receiving grooves 16, the first, second, third, fourth and fifth receiving holes 112, 122, 132, 142 and 152 of the front row are communicated upward to form the row of second receiving grooves 17, and the first, second and third receiving holes 112, 122 and 132 of the corresponding rear row are communicated upward to form the row of first receiving grooves 16.

[0028] As Figure 4 and Figure 5As shown in FIG. 1, each terminal module 2 includes an insulating piece 21 and two signal terminals 22 fixed to the insulating piece 21, the insulating piece 21 includes a first portion 211 and a second portion 212 connected in sequence from top to bottom, the first portion 211 extends forward beyond the third slot wall 1221 and extends backward beyond the fourth slot wall 1222, and the length of the first portion 211 in the front-back direction is greater than the length of the second portion 212.

[0029] In the embodiment, the two signal terminals 22 fixed to the same insulating piece 21 constitute a signal terminal pair 23 in the left-right direction. As shown in FIG. 1, Figure 9 In other embodiments, the two signal terminals 22 fixed to the same insulating piece 21 can constitute a signal terminal pair 23 in the front-back direction, each signal terminal pair 23 includes a first body portion 231 and a second body portion 232, the first body portion 231 is accommodated in the first accommodating hole 112, the second body portion 232 is accommodated in the second accommodating hole 122, the first body portion 231 has a first edge 2311 at the foremost end and a second edge 2312 at the rearmost end, the second body portion 232 has a third edge 2321 at the foremost end and a fourth edge 2322 at the rearmost end, and in the front-back direction, the distance S1 between the first edge 2311 and the second edge 2312 is greater than the distance S2 between the third edge 2321 and the fourth edge 2322.

[0030] As shown in FIG. 1, Figure 4 , Figure 5 and Figure 6 As shown in FIG. 1, each signal terminal 22 includes a second segment 222, a first segment 221 extending downward from the second segment 222, a third segment 223 extending backward from the second segment 222, and a fourth segment 224 extending backward from the third segment 223. The second segment 222 is fixed to the second portion 212 and accommodated in the second accommodating hole 122, the first segment 221 extends downward beyond the second portion 212 and accommodated in the first accommodating hole 112, the first segment 221 is used to connect an electronic component 7, the third segment 223 is fixed to the first portion 211, and the fourth segment 224 extends backward beyond the first portion 211 and connected to the cable assembly 6. In the front-back direction, the maximum dimension L1 of the first segment 221 is greater than the maximum dimension L2 of the second segment 222, specifically, the maximum dimension L1 of the first segment 221 refers to the distance between the foremost end of the first segment 221 and the rearmost end of the first segment 221, and the maximum dimension L2 of the second segment 222 refers to the distance between the foremost end of the second segment 222 and the rearmost end of the second segment 222.

[0031] The first section 221 includes a first section 2211 and a second section 2212 connected to each other, the first section 2211 is a part of the first section 221 that extends forward beyond the second section 222, and the second section 2212 is a part of the first section 221 that extends backward beyond the second section 222, the front end of the first section 2211 is closer to the second section 222 than the rear end of the second section 2212.

[0032] In the embodiment, the first section 221 is a bent elastic arm, and the electronic component 7 is a circuit board, the first section 221 elastically abuts against the electronic component 7, of course, in other embodiments, the electronic component 7 can be a chip or a terminal of a mating connector, and the first section 221 can be welded to the electronic component 7.

[0033] The insulating member 21 includes a first insulating member 21A and a second insulating member 21B, the plurality of signal terminals 22 includes a first signal terminal 22A and a second signal terminal 22B, and the plurality of terminal modules 2 are arranged in rows along the left-right direction and arranged in two rows along the front-rear direction, wherein the terminal modules 2 in the rear row are accommodated in the first accommodating groove 16 and include the first insulating member 21A and two first signal terminals 22A, and the terminal modules 2 in the front row are accommodated in the second accommodating groove 17 and include the second insulating member 21B and two second signal terminals 22B.

[0034] The first part 211 of the first insulating member 21A is accommodated in the third accommodating hole 132 and abuts downward against the second metal layer 12, and the second part 212 is accommodated in the second accommodating hole 122, the first part 211 of the second insulating member 21B is accommodated in the fourth accommodating hole 142 and the fifth accommodating hole 152 and abuts downward against the third metal layer 13.

[0035] As shown in Figure 4 , Figure 7 and Figure 8 , the cable assembly 6 includes a plurality of signal lines 61, a plurality of ground lines 62, an insulating layer 63 covering at least one signal line 61, and a shielding structure 64 located outside the insulating layer 63, the signal lines 61 and the ground lines 52 extend forward beyond the insulating layer 63, in the embodiment, the shielding structure 64 is a shielding layer such as an aluminum foil, a copper foil, etc. covering the insulating layer 63, in other embodiments, the shielding structure 64 can also be a conductive component such as a sleeve ring covering the insulating layer or the shielding layer.

[0036] Two adjacent first accommodating grooves 17 are separated by a conductive partition 18, two adjacent conductive partitions 18 extend towards each other and have support portions 181, a first insulating piece 21A is supported by the two support portions 181, specifically, the portion of the first part 211 beyond the fourth groove wall 1222 is in contact with the support portion 181, the slot 182 is located below the third section 223 and communicates with the second accommodating hole 122, and the slot 182 can reduce the capacitance of the third section 223 and adjust the impedance at the third section 223.

[0037] The signal line 61 is located below and connected to the fourth section 224, the conductive partition 18 is provided with a plurality of grounding connection portions 183, the ground wire 62 is located above and connected to the grounding connection portion 183, and the two adjacent grounding connection portions 183 have a displacement slot 184, the displacement slot 184 is located below the fourth section 224, so that the displacement slot 184 can displace the signal line 61, thereby avoiding the contact between the signal line 61 and the second metal layer 12.

[0038] A plurality of signal lines 61 are arranged in two rows in the up-down direction, one row of signal lines 61 is located below and connected to the fourth section 224 of the first signal terminal 22A, and one row of signal lines 61 is located above and connected to the fourth section 224 of the second signal terminal 22B, so that there is enough space between the two rows of signal lines 61, thereby being able to arrange the shielding piece 4 between the two rows of signal lines 61.

[0039] As shown in Figure 4 and Figure 5 , the insulating stop piece 3 has a plurality of and is located above the first metal layer 11, each insulating stop piece 3 includes a stop body 31, a blocking portion 32 located in front of the stop body 31, and a fixing portion 33 extending downward from the stop body 31, the blocking portion 32 is accommodated in the slot 182, the stop body 31 is accommodated in the displacement slot 184, the first metal layer 11 is provided with a plurality of fixing grooves 113, and the fixing portion 33 is fixed in the fixing groove 113.

[0040] The shielding piece 4 includes a first shielding piece 41, a second shielding piece 42 and a third shielding piece 43, the first shielding piece 41 has a plurality of and is arranged in rows along the left-right direction, the grounding connection portion 183 is located between two adjacent first shielding pieces 41, each first shielding piece 41 includes two shielding portions 411 and a connecting portion 412 connecting the two shielding portions 411, the two shielding portions 411 of each first shielding piece 41 are located on the left and right sides of the two fourth sections 224 respectively, the connecting portion 412 is located above the two fourth sections 224, and the connecting portion 412 is provided with a first window 4121.

[0041] The shielding part 411 comprises a shielding body 4111 and elastic arms 4112 located in front of the shielding body 4111, the elastic arms 4112 are connected with the shielding body 4111, two elastic arms 4112 of each first shielding part 41 are respectively located on the left and right sides of the insulating part 21 and abut against the insulating part 21 in front, the elastic arms 4112 and the shielding body 4111 have an avoiding opening 4113 therebetween, in the left-right direction, the projection of the avoiding opening 4113 is located in the projection of the conductive fence 18, which makes the avoiding opening 4113 be shielded by the conductive fence 18, so as to avoid the avoiding opening 4113 affecting the shielding effect of the shielding part 411.

[0042] The second shielding part 42 is located above the row of first shielding parts 41, and the second shielding part 42 is fixedly connected with a row of connecting parts 412, the second shielding part 42 comprises a second window 421 and a shielding part 422, the second window 421 is arranged in alignment with the first window 4121, and the shielding part 422 is located above the third section 223 of the first signal terminal 22A in the up-down direction, the distance L3 between the third section 223 and the shielding part 422 is greater than the distance L4 between the third section 223 and the support part 181. The third shielding part 43 is fixed above the second shielding part 42 and shields a plurality of second windows 421. The third metal part 131 can shield the first window 4121 and the second window 421, avoid noise passing through the first window 4121 and the second window 421 to interfere with the fourth section 224, and thus improve the shielding effect.

[0043] The first terminal module 2A is assembled into the third receiving hole 132, the second receiving hole 122 and the first receiving hole 112 in sequence from top to bottom, when the first terminal module 2A is assembled, the first part 211 abuts against the support part 181 downward, that is, the support part 181 supports the first part 211 and stops the first part 211 from moving downward.

[0044] A plurality of first shielding parts 41 are fixed below a second shielding part 42 by laser spot welding, the plurality of first shielding parts 41 are arranged in a row on the second shielding part 42 in the left-right direction, and then the first shielding part 41 and the second shielding part 42 are assembled onto the metal shell 1 from top to bottom. In this process, the elastic arms 4112 abut against the insulating part 21 forwardly, and the shielding body 4111 abuts against the cable body 63 rearwardly.

[0045] The cable assembly 6 of the embodiment is a flat cable, a row of signal lines 61 are fixed together by a continuous insulation layer 63, the shielding part 411 cannot extend between two signal lines 61, in order to maximize the shielding effect of the signal lines 61, the shielding part 411 arranged between two fourth segments 224 needs to abut with the cable body 63 backward, especially with the shielding structure 64 on the cable body 63, by arranging the elastic arm 4112 in front of the shielding body 4111, the elastic arm 4112 can give the shielding body 4111 a backward force, so as to reduce the gap between the shielding body 4111 and the cable body 63, and improve the shielding effect of the shielding part 411 on the fourth segment 224 and the signal line 61. Of course, in other embodiments, the cable assembly 6 can be a plurality of separate cables, when the shielding part 411 abuts with the shielding structure 64 on the single cable backward, arranging the elastic arm 4112 on the shielding part 411 can also achieve the above-mentioned effect.

[0046] After the first shielding part 41 and the second shielding part 42 are assembled, the fixing glue 5 is applied to the fourth segment 224 and the signal line 61 through the first window 4121 and the second window 421, the fixing glue 5 is used to fix the signal line 61 on the fourth segment 224, so as to avoid the signal line 61 from separating from the fourth segment 224, wherein the blocking part 32 accommodated in the slot 182 can block the slot 182, so as to avoid the fixing glue 5 applied to enter the second accommodating hole 122 through the slot 182, and the blocking body 31 is located below the fourth segment 224 and connected with the fixing glue 5. It should be noted that, in order to enable the fixing glue 5 to fix the signal line 61 on the fourth segment 224, the fixing glue 5 will gradually increase from the first metal layer 11 until the fourth segment 224 and the signal line 61 are submerged in the process of applying the fixing glue 5, in this process, the greater the volume of the blocking body 31 is, the smaller the amount of the fixing glue 5 will be, therefore, the insulating blocking part 3 can also reduce the amount of the fixing glue 5, and the material of the insulating blocking part 3 is cheaper than that of the fixing glue 5, so that the cost can also be saved.

[0047] In the embodiment, the shielding part 4 is formed by welding three metal sheets together in a stack, in other embodiments, the shielding part 4 can also be formed by stamping a metal sheet, or a metal sheet forms the body part 41, and multiple metal sheets form multiple shielding parts 42, and the body part 41 is welded with the multiple shielding parts 42.

[0048] In summary, the electric connector 100 of the application has the following beneficial effects: 1. The size of the first receiving hole 112 is larger than the size of the second receiving hole 122 along the front-back direction, and the size of the first segment 221 of the signal terminal 22 is larger than the size of the second segment 222. In other words, the sizes of the first receiving hole 112 and the second receiving hole 122 can match the sizes of the first segment 221 and the second segment 222 of the signal terminal 22, thereby improving the shielding effect of the metal housing 1 on the first signal terminal 22A. The metal housing 1 is formed by stacking the first metal part 111 and the second metal part 121, and both the first metal part 111 and the second metal part 121 are individually molded. This means that the molding processes of the first receiving hole 112 and the second receiving hole 122 do not affect each other, which makes it easier to design the size and position of the first receiving hole 112 and the second receiving hole 122. In addition, compared with the first receiving hole 112 and the second receiving hole 122 of the metal shell 1 by metal powder injection molding, the stacking of the first metal part 111 and the second metal part 121 will not have the problem of shrinkage of the metal shell 1 after metal powder injection molding, which will make the manufacturing precision of the first receiving hole 112 and the second receiving hole 122 higher and the size of the first receiving hole 112 and the second receiving hole 122 easier to control.

[0049] 2. Along the front-to-back direction, the distance between the front end of the first segment 2211 and the second segment 222 in the signal terminal 22 is less than the distance between the rear end of the second segment 2212 and the second segment 222. The first groove wall 1121 and the third groove wall 1221 are flush in the vertical direction. The second groove wall 1122 extends backward beyond the fourth groove wall 1222. The design of the first receiving hole 112 can increase the distance between the second segment 2212 and the second groove wall 1122, avoiding short circuit caused by contact between the second segment 2212 and the second groove wall 1122. At the same time, it can balance the distance between the first segment 2211 and the first groove wall 1121 and the distance between the second segment 2212 and the second groove wall 1122, so that the first segment 221 is located at the center of the first groove wall 1121, enhancing the shielding effect of the second metal stack 12 on the first segment 221.

[0050] 3. The clearance slot 184 is provided to allow the signal line 61 to pass through, which can prevent the signal line 61 from contacting the second metal stack 12, thereby preventing the signal line 61 from short-circuiting. The grounding terminal 183 and clearance slot 184 of the housing 1 are formed by stacking metal parts. Under the existing process, the dimensional accuracy of the grounding terminal 183 and clearance slot 184 can be made higher, which makes it smoother when the signal line 61 and the ground line 62 are connected to the fourth segment 224 and the grounding terminal 183 respectively. At the same time, it can also meet the accuracy requirements of high-frequency signal transmission under high density of electrical connector 100.

[0051] 4. The blocking part 32 housed in the slot 182 can block the slot 182 and prevent the applied fixing adhesive 5 from entering the receiving hole through the slot 182. The blocking body 31 is located below the fourth segment 224 and connected to the fixing adhesive 5. In addition, when the fixing adhesive 5 is applied, the insulating blocking part 3 can help the fixing adhesive 5 to submerge the fourth segment 224 and the signal line 61 more quickly, thereby reducing the amount of fixing adhesive 5 used. The material of the insulating blocking part 3 is cheaper than the material of the fixing adhesive 5, thus saving costs.

[0052] The above detailed description is only an illustration of a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. 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: The metal housing includes a first metal stack and a second metal stack stacked vertically. The first metal stack includes at least two first metal parts stacked vertically and a plurality of first receiving holes. The second metal stack includes at least two second metal parts stacked vertically and a plurality of second receiving holes. The first receiving holes and the second receiving holes are connected vertically. The diameter of the first receiving holes is consistent from top to bottom. The diameter of the second receiving holes is consistent from top to bottom. In the front-back direction, the size of the first receiving hole is larger than the size of the second receiving hole. Multiple terminal modules are housed in a metal housing. Each terminal module includes an insulating element and a signal terminal fixed to the insulating element. The signal terminal includes a first segment and a second segment. The first segment is housed in a first receiving hole, and the second segment is housed in a second receiving hole. In the front-back direction, the maximum size of the first segment is greater than the maximum size of the second segment.

2. The electrical connector as claimed in claim 1, characterized in that, The device includes a cable assembly comprising multiple signal lines and a ground line. The signal terminal comprises a third segment extending backward from the second segment and a fourth segment extending backward from the third segment. At least a portion of the signal lines are located below and connected to the fourth segment. The second metal stack comprises multiple support portions and multiple grounding terminals. The support portions support an insulating member upward. The grounding terminals are connected to the ground line. A clearance groove is provided between two adjacent grounding terminals. The clearance groove is located below the fourth segment and is used to accommodate the signal lines.

3. The electrical connector as described in claim 2, wherein multiple terminal modules are arranged in rows along the left-right direction and in two rows along the front-back direction, multiple signal terminals include a first signal terminal and a second signal terminal, the front row terminal modules include a second signal terminal, the rear row terminal modules include a first signal terminal, multiple signal lines are arranged in two rows along the up-down direction, wherein one row of signal lines is located below and connected to the fourth segment of the first signal terminal, and one row of signal lines is located above and connected to the fourth segment of the second signal terminal, and a shielding element is provided between the two rows of signal lines.

4. The electrical connector as claimed in claim 1, characterized in that, The metal housing includes a third metal stack and a fourth metal stack stacked sequentially upwards from the second metal stack. The third metal stack includes at least two third metal parts stacked vertically and two rows of third receiving holes arranged in the front-back direction. The fourth metal stack includes at least two fourth metal parts stacked vertically and one row of fourth receiving holes arranged in the front-back direction. Multiple first receiving holes are arranged in two rows in the front-back direction, and multiple second receiving holes are arranged in two rows in the front-back direction. The first, second, third, and fourth receiving holes in the front row are vertically connected to form a row of second receiving slots, and the first, second, and third receiving holes in the rear row are vertically connected to form a row of first receiving slots. Multiple terminal modules are arranged in rows in the left-right direction and in two rows in the front-back direction. The terminal modules in the front row are received in the second receiving slots, and the terminal modules in the rear row are received in the first receiving slots.

5. The electrical connector as claimed in claim 1, wherein the metal housing includes a plurality of first receiving slots arranged side by side in a left-right direction, the first receiving slots being used to receive a terminal module, two adjacent first receiving slots being separated by a conductive partition, two adjacent conductive partitions having support portions extending towards each other, for two support portions belonging to two adjacent conductive partitions, a slot is provided between the two support portions, and the two support portions together support an insulating member upward, the signal terminal including a third segment extending rearward from the second segment, the third segment being fixed to the insulating member, and the slot being located below the third segment.

6. The electrical connector as claimed in claim 5, comprising a shielding member, the shielding member including a shielding portion located directly above the third segment, wherein the distance between the third segment and the shielding portion is greater than the distance between the third segment and the support portion in the vertical direction.

7. The electrical connector of claim 5 further includes a cable assembly comprising a plurality of signal lines and a ground line, the signal terminal comprising a third segment extending backward from the second segment and a fourth segment extending backward from the third segment, the signal lines being located below and connected to the fourth segment, the conductive partition having a grounding connection portion connected to the ground line, a clearance groove being provided between two adjacent grounding connection portions, the clearance groove being located below the fourth segment, the electrical connector comprising a plurality of insulating stops, each insulating stop comprising a stop body and a blocking portion, the blocking portion being disposed in a slot, the stop body being fixed in the clearance groove, a fixing adhesive being fixed at the connection between the signal line and the fourth segment, the fixing adhesive being at least partially located in the clearance groove and connected to the stop body, the slot communicating with the second receiving hole and the clearance groove, the blocking portion preventing the fixing adhesive from entering the second receiving hole.

8. An electrical connector, characterized in that, include: The metal housing includes a first metal stack and a second metal stack stacked vertically. The first metal stack includes at least two first metal parts stacked vertically and a plurality of first receiving holes. The second metal stack includes at least two second metal parts stacked vertically and a plurality of second receiving holes. The first receiving holes and the second receiving holes are connected vertically. The diameter of the first receiving holes is consistent from top to bottom. The diameter of the second receiving holes is consistent from top to bottom. In the front-back direction, the size of the first receiving hole is larger than the size of the second receiving hole. Multiple terminal modules are housed in a metal housing. Each terminal module includes an insulating member and two signal terminals fixed to the insulating member. The two signal terminals fixed to the same insulating member constitute a signal terminal pair. Each signal terminal pair includes a first body and a second body. The first body is housed in a first receiving hole, and the second body is housed in a second receiving hole. The first body has a first edge at the foremost end and a second edge at the rearmost end. The second body has a third edge at the foremost end and a fourth edge at the rearmost end. In the front-rear direction, the distance between the first edge and the second edge is greater than the distance between the third edge and the fourth edge.

9. An electrical connector, characterized in that, include: The metal housing includes a first metal stack and a second metal stack stacked vertically. The first metal stack includes at least two first metal parts stacked vertically and a plurality of first receiving holes. The second metal stack includes at least two second metal parts stacked vertically and a plurality of second receiving holes. The first receiving holes and the second receiving holes are connected vertically and vertically, and the first receiving holes and the second receiving holes are misaligned in the front-back direction. Multiple terminal modules are arranged side by side at intervals in the left-right direction. Each terminal module includes an insulating element and a signal terminal fixed to the insulating element. The signal terminal includes a second segment and a first segment extending downward from the second segment. The second segment is received in a second receiving hole, and the first segment is received in a first receiving hole. The first segment is used to connect to electronic components.

10. The electrical connector as claimed in claim 9, characterized in that, The first receiving hole includes a first groove wall and a second groove wall that are opposite each other front and back. The second receiving hole includes a third groove wall and a fourth groove wall that are opposite each other front and back. The first groove wall and the third groove wall are flush in the vertical direction. The second groove wall extends backward beyond the fourth groove wall. The first segment extends downward and backward from the second segment. The maximum size of the first segment in the front-back direction is greater than the maximum size of the second segment.

11. The electrical connector as claimed in claim 10, characterized in that, The first segment consists of a first segment and a second segment connected together. The first segment extends forward beyond the second segment, and the second segment extends backward beyond the second segment. In the forward-backward direction, the distance between the frontmost point of the first segment and the second segment is less than the distance between the rearmost point of the second segment and the second segment.

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