CN216120883U

CN216120883U - Electrical connector

Info

Publication number: CN216120883U
Application number: CN202121014614.7U
Authority: CN
Inventors: 何志立; 张文昌
Original assignee: Zhongshan Yide Electronics Co ltd
Current assignee: Zhongshan Yide Electronics Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-03-22
Anticipated expiration: 2031-05-12

Abstract

The utility model discloses an electric connector, which comprises at least one terminal component, wherein the terminal component comprises: a pair of signal terminals, each signal terminal having a contact portion, a lead portion and a connecting portion connecting the contact portion and the lead portion, each connecting portion having at least one insulating seal section; an insulating block, including at least one primary injection molding and a secondary injection molding, primary injection molding cladding is in insulating enclosed section periphery, and secondary injection molding cladding is outside insulating enclosed section and primary injection molding, and primary injection molding has at least one mould fixed part that appears in secondary injection molding, and the insulating enclosed section of a pair of signal terminal is totally by the insulating block cladding. The utility model can completely insulate and isolate the insulating enclosed section from the outside and prevent water, avoids larger impedance fluctuation of the insulating enclosed section caused by different media around the insulating enclosed section and larger dielectric constant difference of each medium, and improves the impedance consistency of the signal terminal.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly, to an electrical connector with improved impedance uniformity of signal terminals.

[ background of the utility model ]

A conventional electrical connector includes a plurality of signal terminals and an insulating block attached around a holding portion of the signal terminals, so that the holding portion of the signal terminals is fixed or insulated from the outside by the insulating block. The insulating block only comprises an insulator which is formed in a one-time injection molding mode, when the insulating block is formed in an injection molding mode on the fixing portion of the signal terminal, a mold is often needed to clamp the signal terminal so as to fix the signal terminal, and after the insulating block is formed and the mold is removed, a groove is often left in the position, clamped by the mold, of the signal terminal on the insulating block. Therefore, one part of the holding part is exposed in the groove, and the other part of the holding part is surrounded by the insulating block, so that the media around the holding part are inconsistent, the impedance consistency of the holding part is poor, and the signal transmission is not facilitated.

Therefore, there is a need for a new electrical connector to overcome the above problems.

[ Utility model ] content

The utility model aims to provide an electric connector, wherein an insulating closed section or a connecting part of a signal terminal is completely covered in an insulating block, so that the insulating closed section or the connecting part can be completely insulated and isolated from the outside and is waterproof, the phenomenon that the impedance fluctuation of the insulating closed section or the connecting part is large due to different media around the insulating closed section or the connecting part and large dielectric constant difference of each medium is avoided, the impedance consistency of the signal terminal can be improved, and the signal transmission of the electric connector is facilitated.

In order to achieve the purpose, the utility model adopts the following technical scheme: an electrical connector comprising at least one terminal assembly, said terminal assembly comprising:

a pair of signal terminals, each of said signal terminals having a contact portion, a lead portion and a connecting portion connecting said contact portion and said lead portion, each of said connecting portions having at least one insulating seal section;

an insulating block, including at least one primary injection molding and a secondary injection molding, the primary injection molding cladding is in insulating enclosed section periphery, the secondary injection molding cladding is in insulating enclosed section and the primary injection molding outside, the primary injection molding has at least one mould fixed part, the mould fixed part is exposed in the secondary injection molding, a pair of signal terminal the insulating enclosed section is totally by the insulating block cladding.

Furthermore, the first injection molding part is provided with at least two injection molding blocks and at least one bridging part, the bridging part is connected with two adjacent injection molding blocks, and the width of the bridging part is smaller than that of the injection molding blocks.

Further, the pair of signal terminals are arranged along a first direction, at least one part of the bridging portion separates two of the pair of signal terminals, and the bridging portion overlaps with a projection of the connecting portion of the pair of signal terminals along the first direction.

Furthermore, a pair of the signal terminals are arranged along a first direction, the extending direction of each contact part is defined as a second direction, at least one of the mold fixing parts of the first injection molding part comprises at least one first fixing part and at least one second fixing part, the first fixing part is formed by outwards protruding the first injection molding part along a third direction perpendicular to the first direction and the second direction, and the second fixing part is formed by outwards protruding the first injection molding part along the first direction.

Furthermore, the pair of signal terminals are arranged along the first direction, the extending direction of each contact portion is defined as a second direction, at least one first injection molding part is provided with two cutting portions, the two cutting portions are respectively positioned on two sides of the first injection molding part in the first direction or on two sides of the first injection molding part in the third direction, the third direction is perpendicular to the first direction and the second direction, and the cutting portions are exposed out of the second injection molding part.

In order to achieve the similar purpose, the utility model adopts another technical scheme that: an electrical connector comprising at least one terminal assembly, said terminal assembly comprising:

each signal terminal is provided with a contact part, a connecting part and a connecting part, wherein the connecting part extends in a bending way and is connected with the contact part and the connecting part;

an insulating block, including a plurality of primary injection molding and a secondary injection molding, each extension section is by at least one primary injection molding cladding, each buckle section is located the outside of primary injection molding, secondary injection molding cladding in the connecting portion with the periphery of primary injection molding, a pair of signal terminal the connecting portion is totally by insulating block cladding.

Further, the width of the bending section is larger than that of the extending section.

Furthermore, the connecting portion of the pair of signal terminals has at least one first connecting portion, the first connecting portion is located outside the first injection molding and is covered by the second injection molding, the contact portion of each signal terminal is provided with at least one second connecting portion in a protruding manner, and the second connecting portion is located outside the insulating block.

Furthermore, a pair of the signal terminals are arranged along a first direction and coupled in a narrow-edge manner, and each signal terminal is provided with two second connecting parts which are arranged on two sides of the contact part of the signal terminal along the first direction in a protruding manner.

Furthermore, the width of the contact part is larger than that of the connecting part, each contact part is provided with a buffer part connected with the connecting part, each buffer part is provided with a through hole, and a part of the second injection molding part is filled in the through hole.

Compared with the prior art, the electric connector provided by the utility model has the following beneficial effects:

the insulating closed section or the connecting part of the signal terminal is completely coated by the insulating block, so the insulating closed section or the connecting part can be completely insulated and isolated from the outside and is waterproof, more importantly, the insulating closed section or the connecting part can be completely positioned in an insulating material, and the phenomenon that the impedance fluctuation of the insulating closed section or the connecting part is large due to different media around the insulating closed section or the connecting part and large dielectric constant difference of each medium is avoided.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of an electrical connector and a mating connector provided in an embodiment of the present invention when they are not mated;

fig. 2 is a schematic perspective view illustrating an electrical connector and a mating connector according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of an electrical connector and a mating connector provided in accordance with an embodiment of the present invention when the connectors are not mated;

fig. 4 is a cross-sectional view of an electrical connector and a mating connector according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of an electrical module according to an embodiment of the present invention;

fig. 6 is an exploded perspective view of an electrical module according to an embodiment of the present invention;

fig. 7 is an exploded perspective view of a first terminal assembly provided by an embodiment of the present invention;

fig. 8 is a plan view of a first terminal assembly provided in accordance with an embodiment of the present invention, as viewed in a first direction, after removal of the first shield shell and the second overmold;

fig. 9 is a plan view of a first terminal assembly provided in accordance with an embodiment of the present invention, viewed in a third direction, with the first shield shell and the second overmold removed;

FIG. 10 is a plan view, looking in a second direction, of a plurality of first terminal assemblies in a same row after molding the second overmold, in accordance with an embodiment of the present invention;

fig. 11 is a plan view of a first terminal assembly provided in accordance with an embodiment of the present invention, viewed in a first direction, with the first shield shell removed;

fig. 12 is an exploded perspective view of a docking connector according to an embodiment of the present invention.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

electrical connector 100
				First insulating joint housing 1
Electrical module 2	Insulating body 3	Accommodation groove 31
				First terminal assembly 4	First signal terminal 41	First contact portion 411	Second material connecting part 4111
Buffer 4112	Through hole 41121
				First connection part 412	Extension 4121	Bending section 4122	First connecting part 4123
First lead-in part 413
				First insulating block 42	First injection molding 421	Mold fixing portion 4211	First fixing part 42111
Second fixing part 42112	Cutting part 42113	Injection block 42114	Bridge 42115
				Second overmold 422	Cutting gap 4221
First shield case 43	First shield 431	Second shield 432	Shield 44
				Docking connector 200	Second insulating butting shell 5
Second terminal assembly 6	Second signal terminal 61	Second contact portion 611	Second connecting portion 612
				Second conductive part 613	Second insulating block 62	Second shield case 63
Grounding bar 7	Interference portion 71
				First substrate 8	Second substrate 9	Solder ball 10	First shot material 11
First width W1	Second width W2	Third width W3
				First direction X	Second direction Y	Third direction Z

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the utility model, reference should be made to the drawings and detailed description that follow.

In order to facilitate understanding of the technical scheme of the utility model, an X axis in three-dimensional coordinate axes in the drawings of the specification is defined as a first direction, a Z axis is defined as a second direction, a Y axis is defined as a third direction, and the X axis, the Y axis and the Z axis are mutually perpendicular in pairs.

Referring to fig. 1 to 4, the present invention provides an electrical connector 100 and a mating connector 200 mating with the electrical connector 100, wherein the electrical connector 100 is mated with the mating connector 200 along the second direction Y, the electrical connector 100 is electrically connected with a first substrate 8 along the third direction Z, and the mating connector 200 is electrically connected with a second substrate 9 along the second direction Y.

Referring to fig. 2, fig. 5 and fig. 6, the electrical connector 100 according to the present invention includes a first insulating mating shell 1 and a plurality of electrical modules 2, wherein the first insulating mating shell is mated with the mating connector 200. The first insulation butting shell 1 has a containing cavity (not shown), a plurality of the electrical modules 2 are sequentially arranged along the first direction X and are contained in the containing cavity along the second direction Y, each of the electrical modules 2 includes an insulation body 3, a plurality of first terminal assemblies 4 arranged on the insulation body 3 along the third direction Z, and a shielding member 44 adjacent to one side of the insulation body 3, the insulation body 3 is provided with a plurality of containing slots 31 arranged along the third direction Z, each of the containing slots 31 correspondingly contains one of the first terminal assemblies 4, and each of the shielding members 44 is fixed to the insulation body 3 and the plurality of first terminal assemblies 4 located in the same electrical module 2.

Referring to fig. 12, the docking connector 200 according to the present invention includes a second insulative docking shell 5 for docking with the electrical connector 100, a plurality of second terminal assemblies 6 and a plurality of grounding bars 7. The plurality of second terminal assemblies 6 are arranged in a plurality of rows along the third direction Z, the plurality of second terminal assemblies 6 in each row are arranged along the first direction X, each ground strip 7 extends along the first direction X, the plurality of second terminal assemblies 6 in each row simultaneously contact with a corresponding one of the ground strips 7, two interference portions 71 protrude outwards from both ends of each ground strip 7 in the first direction X, and each ground strip 7 is fixed by the interference of the two interference portions 71 with the second insulation butting shell 5.

In the present embodiment, each of the first terminal assembly 4 and the second terminal assembly 6 has an insulating block, a pair of signal terminals and a shielding shell, and the signal terminals of each of the first terminal assembly 4 and the second terminal assembly 6 have a contact portion, a connection portion and a conductive portion. In order to better solve the technical problems of the present invention, the insulation block of the first terminal assembly 4 is used as the first insulation block 42, the signal terminal of the first terminal assembly 4 is used as the first signal terminal 41, the shielding shell of the first terminal assembly 4 is used as the first shielding shell 43, the insulation block of the second terminal assembly 6 is used as the second insulation block 62, the signal terminal of the second terminal assembly 6 is used as the second signal terminal 61, the shielding shell of the second terminal assembly 6 is used as the second shielding shell 63, and the contact portion of the first signal terminal 41 is used as the first contact portion 411, the connection portion of the first signal terminal 41 is used as the first connection portion 412, the connection portion of the first signal terminal 41 is used as the first connection portion 413, and the contact portion of the second signal terminal 61 is used as the second contact portion 611, The structure of the present embodiment will be described by referring to the connection portion of the second signal terminal 61 as a second connection portion 612 and the conduction portion of the second signal terminal 61 as a second conduction portion 613.

Referring to fig. 5 to 7, the first terminal assembly 4 includes a pair of the first signal terminals 41, the first insulating block 42 covering the pair of the first signal terminals 41, and a first shielding shell 43 covering the pair of the first signal terminals 41 and the first insulating block 42, wherein the first shielding shell 43 is electrically isolated from the first signal terminals 41 by the first insulating block 42. The first signal terminal 41 has a first contact portion 411, a first connecting portion 413, and a first connecting portion 412 connecting the first contact portion 411 and the first connecting portion 413. In this embodiment, the pair of first signal terminals 41 are arranged along the first direction X, the first contact portion 411 extends from the first connection portion 412 along the second direction Y, the first conduction portion 413 extends from the first connection portion 412 along the third direction Z, the first contact portion 411 is configured to contact with the second contact portion 611, and the first conduction portion 413 is configured to be soldered to the first substrate 8. In this embodiment, the entire first connecting portion 412 is completely covered by the first insulating block 42 as an insulating closed section, but of course, in other embodiments, the first connecting portion 412 has a plurality of insulating closed sections spaced apart from each other, or only a part of the first connecting portion 412 is used as the only insulating closed section; for example, according to actual needs, different positions of the first connecting portion 412 are respectively used as a plurality of insulating closed sections, and the plurality of insulating closed sections are respectively and completely wrapped in the first insulating block 42, so as to respectively perform impedance adjustment, waterproof setting, complete insulating setting, and the like on the plurality of insulating closed sections.

Further, each of the first signal terminals 41 extends in a bent manner, the first connection portion 412 has at least two extension segments 4121 and a bent segment 4122 located between two adjacent extension segments 4121, and specifically, the number of the extension segments 4121 and the bent segments 4122 of each of the first connection portions 412 and the number of the first injection-molded parts 421 can be set according to the length and the shape of the first signal terminals 41. For example, as shown in fig. 3 and 4, in the present embodiment, the first signal terminals 41 in the first terminal assembly 4 relatively far away from the first substrate 8 are relatively long, the first connection portion 412 thereof has three extending sections 4121 and two bending sections 4122, and the first connection portion 412 thereof is covered by more first injection-molded parts 421; whereas the first signal terminals 41 in the first terminal assembly 4 relatively far from the first substrate 8 will be shorter, the first injection-molded part 421 coated on the first connection part 412 thereof will be less. Further, the width of the bending section 4122 is defined as a first width W1, the width of the extending section 4121 is defined as a second width W2, and the first width W1 is greater than the second width W2. Because the bent segment 4122 has a bent shape, the impedance thereof is relatively higher than that of the straight extension segment 4121, and the present invention reduces the impedance of the bent segment 4122 by increasing the width of the bent segment 4122, so as to reduce the impedance difference between the bent segment 4122 and the extension segment 4121, thereby facilitating the impedance consistency of the first signal terminal 41; meanwhile, the bending section 4122 has a larger width, so that the bending surface of the bending portion can be increased, which is beneficial to preventing the first signal terminal 41 from being bent obliquely in the first direction X when the first signal terminal 41 is bent, and ensuring that the first signal terminal 41 is bent and extended in one plane. Further, each of the first signal terminals 41 is provided with a plurality of first connecting portions 4123 and a second connecting portion 4111, the first connecting portions 4123 are located on the first connecting portion 412, the second connecting portion 4111 is located on the first contact portion 411, and the first connecting portions 4123 and the second connecting portions 4111 are both used for connecting a material strip, so as to better position the first signal terminals 41 when the first signal terminals 41 are formed.

Referring to fig. 3 and 7, the first insulating block 42 includes a plurality of first injection molding pieces 421 and a second injection molding piece 422, the plurality of first injection molding pieces 421 are disposed at intervals and cover the periphery of the insulating closing section, the second injection molding piece 422 covers the insulating closing section and the plurality of first injection molding pieces 421, each of the first injection molding pieces 421 has a plurality of mold fixing portions 4211, each of the mold fixing portions 4211 is exposed from the second injection molding piece 422, and the insulating closing section of a pair of the first signal terminals 41 is completely covered by the insulating block. The mold fixing portion 4211 is used for fixing the first signal terminal 41 and the first injection-molded part 421 by an injection mold when the second injection-molded part 422 is molded. Specifically, the first injection molding piece 421 is molded on the first connecting portion 412, and then the first signal terminal 41 and the first injection molding piece 421 are fixed and limited by the mold fixing portion 4211, so that the second injection molding piece 422 is molded on the first injection molding piece 421 and the first signal terminal 41, and after the mold positioned on the mold fixing portion 4211 is removed, the mold fixing portion 4211 is exposed to the second insulating block 62, and the first insulating block 42 is formed by the first injection molding piece 421 and the second injection molding piece 422 together. Since the first insulating block 42 of the present invention completely covers the insulating closed section of the first signal terminal 41, the insulating closed section can be completely insulated and isolated from the outside and is waterproof, and more importantly, the insulating closed section can be completely located in an insulating material, so as to avoid that the impedance fluctuation of the insulating closed section is large due to different media around the insulating closed section and large dielectric constant difference of each medium, and the present invention can improve the impedance consistency of the first signal terminal 41, which is favorable for signal transmission of the electrical connector 100.

Further, in this embodiment, each of the extension segments 4121 of the first signal terminal 41 is covered by at least one of the first injection-molded parts 421, each of the bent segments 4122 is located outside the first injection-molded part 421, and each of the extension segments 4121 and each of the bent segments 4122 of each of the first connection parts 412 are covered by the first insulating block 42. The extended portion 4121 with the longer length may be coated by more than two first injection-molded parts 421, and the extended portion 4121 with the shorter length may be coated by only one first injection-molded part 421. Therefore, the first connecting portion 412 can be completely insulated and isolated from the outside, waterproof, and the impedance consistency of the first signal terminal 41 can be improved, the first injection molding piece 421 can be prevented from influencing the bending molding of the first signal terminal 41, and the bending molding of the first signal terminal 41 after the first injection molding piece 421 is formed is facilitated.

Referring to fig. 7 to 9, in the plurality of first injection molded parts 421, at least one first injection molded part 421 has two injection molded blocks 42114 and a bridge 42115, the bridge 42115 is connected to two adjacent injection molded blocks 42114, and the width of the bridge 42115 is smaller than that of the injection molded blocks 42114. The two injection-molded blocks 42114 can be connected together by the bridge 42115, so that the injection-molded material can flow from one injection-molded block 42114 to the other injection-molded block 42114 through the bridge 42115, and the injection-molded holes do not need to be arranged for each injection-molded block 42114, so that the number of the injection-molded holes in the process of molding the first injection-molded part 421 is reduced; moreover, the width of bridge 42115 is less than that of injection molding 42114, so that the material consumption of first injection molding part 421 can be reduced, and the second injection molding part 422 is molded after first injection molding part 421, and the second injection molding part 422 and the first injection molding part 421 can be embedded with each other, so that the connection stability between second injection molding part 422 and first injection molding part 421 is improved. Further, at least a portion of the bridge portion 42115 separates two signal terminals of the pair of signal terminals, and the bridge portion 42115 overlaps a projection of the first connection portion 412 of the pair of first signal terminals 41 along the first direction X, so that compared with the bridge portion 42115 completely staggered from the first connection portion 412, the pair of first connection portions 412 can be separated by the bridge portion 42115, the pair of first connection portions 412 are prevented from being pressed and deformed by injection pressure during second injection molding to be in contact with each other, and the first injection molding 421 is compact in structure, so that the volume of the molded first insulation block 42 can be relatively small. It should be noted that, in a plurality of the first injection-molded parts 421, the number of the injection-molded pieces 42114 included in each of the first injection-molded parts 421 may be set according to actual needs, for example, if a longer first injection-molded part 421 covers a longer extension 4121, more than two injection-molded pieces 42114 are correspondingly provided; the shorter extension 4121 can be effectively positioned by a shorter first injection molded part 421, and a corresponding injection molded piece 42114 is provided.

Referring to fig. 7 to 11, in one of the first injection-molded parts 421, the plurality of mold fastening parts 4211 have a plurality of first fastening parts 42111 and a plurality of second fastening parts 42112, the first fastening parts 42111 are formed to protrude outward from the first injection-molded part 421 in the third direction Z, and the second fastening parts 42112 are formed to protrude outward from the first injection-molded part 421 in the first direction X. Thus, when the second injection-molded part 422 is molded, the first signal terminals 41 may be positioned in the first direction X and the third direction Z by the first fixing parts 42111 and the second fixing parts 42112. More specifically, the first injection molding piece 421 is provided with one first fixing portion 42111 protruding from each of two sides of the third direction Z, and the first injection molding piece 421 is provided with one second fixing portion 42112 protruding from each of two sides of the first direction X, so that the first signal terminal 41 can be accurately positioned on four sides, and the first signal terminal 41 is prevented from being deviated to affect the first insulating block 42 to be wrapped outside the first connecting portion 412.

Referring to fig. 9 to 11, in one of the first injection-molded parts 421, there are two cut portions 42113, the cut portions 42113 are located at both sides of the first injection-molded part 421 in the first direction X, and the cut portions 42113 are exposed from the second injection-molded part 422. The cut portion 42113 is formed when cutting an excess portion of the first injection-molded part 421. As shown in fig. 10, the first terminal assemblies 4 in the same row are formed by fixing the first signal terminals 41 in the same row together with the first injection molding material 11 adjacent to the connecting portion, and when the second injection molding 422 is injection molded, the mold is fixed to both ends of the first injection molding material 11 or a portion between two first signal terminals 41, and after the second injection molding 422 is formed, the first injection molding material 11 is cut to form a plurality of first injection molding 421 respectively located in the plurality of first terminal assemblies 4. Further, the second injection molding piece 422 is provided with a cutting gap 4221, and the cutting part 42113 is exposed to the corresponding cutting gap 4221; of course, in other embodiments, the cut portion 42113 may be located on both sides of the first overmold 421 in the third direction Z, or the second overmold 422 may not be provided with the cut gap 4221, i.e., the cut portion 42113 may be flush with the surface of the second overmold 422 or the cut portion 42113 slightly protrudes from the surface of the second overmold 422. Therefore, according to the utility model, the first signal terminals 41 in the same row can be fixed by the first injection molding material 11, and then the plurality of first injection molding pieces 421 are formed by cutting, so that the displacement risk of the first signal terminals 41 during the molding of the second injection molding piece 422 can be reduced. Further, the first contact portion 411 is located by the second connecting portion 4111, and the first signal terminal 41 in the same row is located by the first injection molding material 11 at a portion adjacent to the guiding portion, so that the two ends of the first signal terminal 41 are located, and the first signal terminal 41 is more effectively prevented from shifting.

Referring to fig. 7, the first shielding case 43 includes a first shielding body 431 and a second shielding body 432, the first shielding body 431 and the second shielding body 432 are both U-shaped structures, and the first shielding body 431 and the second shielding body 432 are arranged along the third direction Z in an opposite direction and are assembled to form the first shielding case 43. Thereby, the assembly of the pair of first signal terminals 41, which are wrapped with the first insulating block 42, into the first shield shell 43 is facilitated. Of course, in other embodiments, the first shielding shell 43 may also be an integrally formed tubular structure, or the first shielding shell 43 is formed by a structure with other shapes, which is not limited herein.

Referring to fig. 8, 9 and 11, the first connecting portion 4123 is located outside the first injection-molded part 421 and is covered by the second injection-molded part 422, the second connecting portion 4111 protrudes from the contact portion of each signal terminal, the second injection-molded part 422 is located outside the first insulating block 42, so that the first connecting portion 4123 is cut off after the first injection-molded part 421 is formed, and the second connecting portion 4111 is cut off after the second injection-molded part 422 is formed, and meanwhile, the second connecting portion 4111 can increase the width of the first contact portion 411 and is exposed in an air medium, which is beneficial to reducing the impedance of the first contact portion 411 and reducing the signal loss of the first signal terminal 41.

Referring to fig. 8, 9 and 11, a pair of the first signal terminals 41 are arranged along a first direction X and coupled to each other at narrow sides, each of the first signal terminals 41 has two second connecting portions 4111, and the two second connecting portions 4111 are formed by protruding from two sides of the first contact portion 411 along the first direction X. Therefore, in the pair of first signal terminals 41 of the present invention, the second connecting portion 4111 facilitates fixing the first signal terminals 41, and the narrow-side coupling of the two first signal terminals 41 can also keep the facing area of the pair of first signal terminals 41 unchanged when the area of the first contact portion 411 is enlarged by the second connecting portion 4111, so that the pair of first signal terminals 41 can be coupled sufficiently, which is favorable for signal transmission.

Referring to fig. 9, the width of the first contact portion 411 is defined as a third width W3, the third width W3 is greater than the width of the first connection portion 412, and specifically, the third width W3 is greater than the first width W1 and the second width W2, so that the contact area of the first contact portion 411 can be increased, and the contact force between the first contact portion 411 and the second contact portion 611 can be increased; further, each of the first contact portions 411 has a buffering portion 4112 connected to the first connection portion 412, each of the buffering portions 4112 has a through hole 41121, and at least a portion of the second overmold 422 is filled in the through hole 41121, so that the holding stability between the first signal terminal 41 and the first insulating block 42 can be increased, and the buffering portion 4112 is provided with the through hole 41121, the impedance of the buffering portion 4112 can be adjusted, so that the impedance between the first connection portion 412 and the first contact portion 411 is slowly transited, the impedance is prevented from being abruptly changed between the first contact portion 411 and the first connection portion 412, and signal fluctuation is reduced.

Referring to fig. 3, fig. 4 and fig. 12, in the docking connector 200 according to the present invention, for each second terminal assembly 6, the second insulating block 62 is covered in the second connecting portion 612 of the pair of second signal terminals 61, the second shielding shell 63 is covered outside the second insulating block 62 and the pair of second signal terminals 61, and each grounding strip 7 is simultaneously contacted with the second shielding shells 63 of the plurality of second terminal assemblies 6 located in the same row, so that the potentials of the plurality of second shielding shells 63 in the same row are the same, thereby forming an integral shielding structure, improving the shielding effect of the docking connector 200, and improving the high-frequency performance of the docking connector 200.

Referring to fig. 3 and 4, after the electrical connector 100 and the docking connector 200 are completely docked, each of the first signal terminals 41 is docked with a corresponding one of the second signal terminals 61, each of the first shielding shells 43 is docked with a corresponding one of the second shielding shells 63, each of the first shielding shells 43 is accommodated in a corresponding one of the second shielding shells 63, and the shielding structures of the electrical connector 100 and the docking connector 200 are communicated together, so that the high-frequency performance is improved, and the transmission of high-frequency signals is facilitated. The first connecting portion 413 is soldered to the first substrate 8 by solder balls 10 to improve the coplanarity of the first signal terminals 41, and similarly, the second connecting portion 613 is soldered to the second substrate 9 by solder balls 10 to improve the coplanarity of the second signal terminals 61.

It should be noted that, in the above embodiment, for the plurality of first injection-molded parts 421 on each pair of first signal terminals 41, a part of the first injection-molded parts 421 is provided with a plurality of mold fixing portions 4211, that is, a plurality of first fixing portions 42111 and a plurality of second fixing portions 42112, so that the first signal terminals 41 and the first injection-molded parts 421 can be fixed in the first direction X and the third direction Z to mold the second injection-molded parts 422; a portion of the first injection-molded part 421 is provided with a plurality of the first fixing portions 42111 and a plurality of cut portions 42113, and the first signal terminal 41 is fixed by the first fixing portion 42111 and the first injection-molded material 11 to be cut to mold the second injection-molded part 422. Of course, in other embodiments, all of the first injection-molded parts 421 may not be provided with the cut portions 42113 and may be positioned by the plurality of mold fixing portions 4211; or all the first shots 421 are provided with the cut portions 42113, and the second shots 422 are positioned by the first shots 11 to be cut when they are formed, which is not limited herein.

In summary, the electrical connector 100 of the present invention has the following advantages:

1. since the first insulating block 42 of the present invention completely covers the insulating closed section of the first signal terminal 41, the insulating closed section can be completely insulated and isolated from the outside and is waterproof, and more importantly, the insulating closed section can be completely located in an insulating material, so as to avoid that the impedance fluctuation of the insulating closed section is large due to different media around the insulating closed section and large dielectric constant difference of each medium, and the present invention can improve the impedance consistency of the first signal terminal 41, which is favorable for signal transmission of the electrical connector 100. Furthermore, each bending segment 4122 is located outside the first injection-molded part 421, so as to prevent the first injection-molded part 421 from affecting the bending of the first signal terminal 41, and facilitate bending of the first signal terminal 41 after the first injection-molded part 421 is molded.

2. The two injection-molded blocks 42114 can be connected together through the bridge 42115, so that injection-molded materials can flow from one injection-molded block 42114 to the other injection-molded block 42114 through the bridge 42115, and injection-molded holes do not need to be formed for each injection-molded block 42114, so that the number of injection-molded holes in the process of molding the first injection-molded part 421 is reduced; moreover, the width of bridge 42115 is less than that of injection molding 42114, so that the material consumption of first injection molding part 421 can be reduced, and the second injection molding part 422 is molded after first injection molding part 421, and the second injection molding part 422 and the first injection molding part 421 can be embedded with each other, so that the connection stability between second injection molding part 422 and first injection molding part 421 is improved.

3. The first signal terminal 41 can be positioned in the first direction X and the third direction Z by the first fixing portion 42111 and the second fixing portion 42112, which is beneficial to accurately positioning the first signal terminal 41, and the first signal terminal 41 is prevented from being displaced to influence the molding of the first insulating block 42 on the first signal terminal 41.

4. The width of the bent segment 4122 is greater than the width of the extended segment 4121, so that the originally larger impedance of the bent segment 4122 can be reduced, the impedance difference between the bent segment 4122 and the extended segment 4121 can be reduced, and the impedance consistency of the first signal terminal 41 can be facilitated; meanwhile, the bending section 4122 has a larger width, so that the bending surface of the bending portion can be increased, which is beneficial to preventing the first signal terminal 41 from being bent obliquely in the first direction X when the first signal terminal 41 is bent, and ensuring that the first signal terminal 41 is bent and extended in one plane.

5. Each of the first contact portions 411 has a buffer portion 4112 connected to the first connection portion 412, each of the buffer portions 4112 has a through hole 41121, at least a portion of the second overmold 422 is filled in the through hole 41121, so that the holding stability between the first signal terminal 41 and the first insulating block 42 can be increased, and the buffer portion 4112 is provided with the through hole 41121, so that the impedance of the buffer portion 4112 can be adjusted, the impedance between the first connection portion 412 and the first contact portion 411 is slowly transited, the impedance is prevented from being abruptly changed between the first contact portion 411 and the first connection portion 412, and signal fluctuation is reduced.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all technical changes that can be made by applying the present specification and the drawings are included in the scope of the present invention.

Claims

1. An electrical connector comprising at least one terminal assembly, said terminal assembly comprising:

2. The electrical connector of claim 1, wherein the first shot molded part has at least two injection molded pieces and at least one bridge connecting adjacent two of the injection molded pieces, the bridge having a width less than a width of the injection molded pieces.

3. The electrical connector of claim 2, wherein a pair of the signal terminals are arranged along a first direction, at least a portion of the bridging portion spaces apart two of the signal terminals of the pair of the signal terminals, and the bridging portion overlaps a projection of the connecting portion of the pair of the signal terminals along the first direction.

4. The electrical connector of claim 1, wherein a pair of said signal terminals are arranged along a first direction defining an extending direction of each of said contact portions as a second direction, and wherein said mold securing portion of at least one of said first injection-molded parts includes at least a first securing portion and at least a second securing portion, said first securing portion being formed to protrude outwardly from said first injection-molded part along a third direction perpendicular to said first direction and said second direction, and said second securing portion being formed to protrude outwardly from said first injection-molded part along said first direction.

5. The electrical connector of claim 1, wherein a pair of the signal terminals are arranged along the first direction, defining a second direction as an extension direction of each of the contact portions, and at least one of the first shots has two cut-outs, the two cut-outs being located on either side of the first shot in the first direction or on either side of the first shot in the third direction, the third direction being perpendicular to the first direction and the second direction, the cut-outs being exposed at the second shot.

6. An electrical connector comprising at least one terminal assembly, said terminal assembly comprising:

7. The electrical connector of claim 6, wherein the width of the bent section is greater than the width of the extended section.

8. The electrical connector of claim 6, wherein said connecting portions of a pair of said signal terminals have at least one first connecting portion located on the exterior of said first overmold and surrounded by said second overmold, said contact portion of each of said signal terminals being relieved with at least one second connecting portion located on the exterior of said dielectric block.

9. The electrical connector of claim 8, wherein a pair of said signal terminals are arranged along a first direction and coupled at their narrow sides, each of said signal terminals having two of said second connecting portions protruding from both sides of said contact portion thereof along said first direction.

10. The electrical connector of claim 6, wherein the contact portions have a width greater than a width of the connecting portions, each contact portion has a buffer portion connected to the connecting portion, each buffer portion has a through hole, and a portion of the second overmold is filled in the through hole.