Electric connector

Abstract

An electric connector comprises an insulation body and a terminal set fixedly arranged in the insulation body, and the terminal set is provided with a terminal insulation seat, a plurality of terminal grooves concavely arranged on the upper surface and the lower surface of the terminal insulation seat and a plurality of terminals accommodated in the terminal grooves. The front end of the terminal groove extends towards the interior of the terminal insulating seat to form an embedded groove, the front end of the terminal extends towards the interior of the terminal insulating seat to form an embedded part, and the embedded part is embedded in the embedded groove, so that the front end of the terminal is prevented from tilting due to the influence of external force. The front end of the embedding part extends forwards to form an extending part, the extending part extends out of the front end of the embedding groove, and the insulating body wraps the extending part to reinforce positioning and holding of the terminal.

Description

Technical Field

[0001] The utility model relates to an electric connector, in particular to an electric connector which has an optimal structural strength and can prevent terminals from tilting. Background Art

[0002] The Universal Serial Bus (USB) is a connector specification widely used in various electronic devices. As application scenarios evolve, USB has evolved into USB 2.0, USB 3.0, Micro USB, Mini USB, and USB Type-C. The USB Type-C connector, with its ability to simultaneously charge and transfer data, is reversible, enhancing convenience and making it the most widely used type.

[0003] In order to make the USB TYPE-C interface pluggable on both sides, the USB TYPE-C connector is provided with an iron shell, a tongue portion disposed in the iron shell, and conductive terminals mounted on both sides of the tongue portion. In order to mount the conductive terminals on both sides of the tongue portion, the conventional method is to first form an insulating body and then insert and assemble the conductive terminals into the insulating body. Figure 9 A conventional connector 100' is disclosed, comprising an insulating body 10' and a plurality of conductive terminals 20' mounted on the insulating body 10'. The conductive terminals 20' are exposed on the upper and lower surfaces of the insulating body to provide electrical contact with a mating connector. However, with this structural design, the front ends of the conductive terminals 20' are susceptible to warping during insertion into the insulating body 10' or when the connector 100' is plugged into a mating connector, thereby shortening the connector's service life.

[0004] For example, Taiwan Utility Model Patent No. M604068 discloses an electrical connector comprising a body and an upper and lower terminal groups fixed therein. The upper terminal group comprises a plurality of upper terminals and an upper base, each of which is provided with an upper fixing portion and an upper contact portion. The upper fixing portion is enclosed and fixed within the upper base, and the upper fixing portion extends forward to form the upper contact portion exposed at the front end of the upper base. The lower terminal group comprises a plurality of lower terminals and a lower base, each of which is provided with a lower fixing portion and a lower contact portion. The lower fixing portion is enclosed and fixed within the lower base, and the lower fixing portion extends forward to form the lower contact portion exposed at the front end of the lower base. The front end of the body is enclosed by a front base, and the front base encloses the front ends of the upper and lower contact portions to prevent warping of the upper and lower terminal groups. However, in this structural design, since the upper contact portion and the lower contact portion extend out of the upper base and the lower base respectively, the holding force between the upper row of terminals and the upper base and between the lower row of terminals and the lower base is affected, resulting in the structures of the upper row of terminal groups and the lower row of terminal groups being more fragile.

[0005] In view of the above shortcomings, it is necessary to provide an electrical connector with optimal structural strength and capable of preventing the terminals from tilting up. Summary of the Invention

[0006] The purpose of the utility model is to provide an electrical connector, and in particular to an electrical connector with preferred structural strength.

[0007] In order to overcome the deficiencies of the prior art, the present invention discloses an electrical connector, comprising an insulating body, the front end of which is integrally formed into a covering end, and a terminal group fixed to the insulating body, the terminal group being provided with a terminal insulating seat, a plurality of terminal slots formed by depressions on the upper and lower surfaces of the terminal insulating seat, a plurality of terminals received in the terminal slots, a covering portion integrally formed at the front end of the terminal insulating seat, and a plurality of embedded slots extending from the front end of the terminal slots to the interior of the covering portion, the embedded slots extending forward to the front end surface of the covering portion, wherein each of the terminals is provided with a fixing portion, a contact portion, a guide angle, an embedded portion and an extending portion, the fixing portion being fixed in the terminal insulating seat The contact portion is formed by extending forward from the front end of the fixing portion, and the contact portion exposes the upper and lower surfaces of the terminal insulating seat. The chamfer is formed by tilting forward from the front end of the contact portion and exposed on the surface of the terminal insulating seat. The embedded portion is located at the front end of the chamfer and bends and extends toward the inside of the covering portion and is buried in the embedded groove. The extension portion is formed by extending forward from the front end of the embedded portion. The extension portion is arranged in the embedded groove and extends out of the front end surface of the covering portion and the front end of the embedded groove, and the covering end covers the extension portion.

[0008] Furthermore, each of the terminals includes a connecting portion, which extends horizontally forward from the front end of the chamfer, the connecting portion is exposed to the surface of the terminal insulating seat and is flush with the surface of the terminal insulating seat, and the embedded portion is formed at the front end of the connecting portion, and the surface of the contact portion is higher than the surface of the terminal insulating seat.

[0009] Furthermore, each of the terminals includes a connecting portion, which extends forward from the front end of the chamfer, is enclosed in the terminal insulating seat, and the embedded portion is formed at the front end of the connecting portion.

[0010] Furthermore, the insulating body includes a main body portion and a tongue piece, the tongue piece is formed by extending forward from the front end of the main body portion, the surface of the tongue piece and the surface of the terminal insulating seat are flush with each other, the covering end is integrally formed at the front end of the tongue piece, and the fixing portion is fixed in the main body portion and the tongue piece, and the contact portion and the chamfer are exposed on the surface of the tongue piece.

[0011] Furthermore, the terminal insulating seat includes an upper row terminal seat and a lower row terminal seat, the upper row terminal seat is provided with an upper seat and an upper tongue plate, the upper tongue plate is formed by extending forward from the front end of the upper seat, and the front end of the upper tongue plate is integrally formed with the covering portion, the lower row terminal seat includes a lower seat and a lower tongue plate, the lower tongue plate is formed by extending forward from the front end of the lower seat, and the front end of the lower tongue plate is integrally formed with the covering portion, and wherein the upper seat and the lower seat are aligned with each other and are covered in the main body, and the upper tongue plate and the lower tongue plate are aligned with each other and are covered in the tongue piece.

[0012] Furthermore, a channel is provided on each side of the upper row of terminal seats and the lower row of terminal seats. The channel located at the upper row of terminal seats is formed by the depression of the surface of the upper seat and the surface of the upper tongue plate, and the channel located at the lower row of terminal seats is formed by the depression of the surface of the lower seat and the surface of the lower tongue plate. The insulating body is provided with a plurality of embedded strips embedded in the channels.

[0013] Furthermore, the terminal group includes a pair of grounding terminals, the grounding terminals are located on both sides of several of the terminals, the front ends of the grounding terminals extend out of the front ends of the terminal insulating seats and are covered and fixed in the covered ends, and the channel is located between several of the terminals and the grounding terminals.

[0014] Furthermore, the side wall of the terminal slot is recessed to form at least one notch, and the surface of the terminal protrudes outward to form at least one latching portion, and the latching portion is latched into the notch.

[0015] Furthermore, the electrical connector also includes a center piece and two shielding plates, the center piece is located in the middle of the terminal group, the two shielding plates are respectively arranged on the upper and lower sides of the terminal insulating seat, and at least one support block protrudes from the upper and lower surfaces of the terminal insulating seat to support the shielding plate, wherein each of the shielding plates has a first plate portion, a second plate portion and two fixed legs, the second plate portion is formed by vertically bending the front side edge of the first plate portion and then extending horizontally forward, the first plate portion and the second plate portion are exposed on the surface of the insulating body, the fixed legs are respectively vertically bent from the two side edges of the first plate portion and then extended outward, and the fixed legs are fixed in the insulating body and held on the center piece.

[0016] Furthermore, the center piece is provided with at least one positioning hole, and the terminal insulating seat is provided with a positioning structure combined with the positioning hole.

[0017] In summary, the present invention provides a connector comprising the insulating body and the terminal group fixed in the insulating body, wherein the terminal group comprises the terminal insulating seat, a plurality of terminal slots recessed in the upper and lower surfaces of the terminal insulating seat, a plurality of terminals accommodated in the terminal slots, and the covering portion formed at the front end of the terminal insulating seat. The front end of the terminal slot extends toward the interior of the covering portion to form the embedding slot, and the front end of the terminal extends toward the interior of the covering portion to form the embedding portion. The embedding portion is embedded in the embedding slot to prevent the front end of the terminal from being lifted up by external force. The front end of the embedding portion extends forward to form the extension portion, and the extension portion extends out of the front end of the embedding slot. The covering end at the front end of the insulating body covers the extension portion to strengthen the positioning and retention of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the electrical connector of the present utility model.

[0019] Figure 2 The utility model is an electric connector along Figure 1 Cross-section of the middle II line.

[0020] Figure 3 It is an exploded view of the electrical connector of the present invention.

[0021] Figure 4 It is an exploded view of the center piece and terminal group of the electrical connector of the utility model.

[0022] Figure 5 This is another exploded view of the center piece and terminal assembly of the electrical connector of the present invention.

[0023] Figure 6 It is a partial exploded view of the terminal assembly of the electrical connector of the present invention.

[0024] Figure 7 It is a partial enlarged view of the terminal of the electrical connector of the present invention.

[0025] Figure 8 The utility model electric connector is Figure 6 An enlarged view of section A in FIG, where one terminal has been joined to the terminal insulator.

[0026] Figure 9 This is a perspective view of a conventional connector. DETAILED DESCRIPTION

[0027] In order to explain the technical content, structural features, achieved objectives and technical effects of the present invention in detail, the following embodiments are given and described in detail with reference to the accompanying drawings.

[0028] See also Figure 1 and Figure 3 The present invention provides an electrical connector 100. A USB Type C connector is used as an example. The electrical connector 100 is used to mate with a docking connector (not shown). The electrical connector 100 includes an insulating body 1, a center piece 2, a terminal group 3, and two shielding plates 4. The insulating body 1 covers the center piece 2, the terminal group 3, and the shielding plates 4, wherein the center piece 2 is coupled to the center of the terminal group 3, and the two shielding plates 4 are coupled to the upper and lower sides of the terminal group 3, respectively.

[0029] See also Figure 3 、 Figure 6 as well as Figure 8 The terminal assembly 3 includes a terminal insulating seat 31, a plurality of terminal slots 32, a plurality of terminals 33, and a covering portion 37. The plurality of terminal slots 32 are recessed side by side from the surface of the terminal insulating seat 31. The terminals 33 are embedded in the terminal insulating seat 31 and received in the terminal slots 32. The front end of the terminal insulating seat 31 is integrally formed to form the covering portion 37 to cover and fix the front ends of the plurality of terminals 33. The covering portion 37 is provided with a plurality of embedding grooves 371 communicating with the plurality of terminal slots 32. The front ends of the terminal slots 32 extend forward into the interior of the covering portion 37 to form the curved embedding grooves 371. The front ends of the embedding grooves 371 extend forward to the front end surface of the covering portion 37. After being embedded in the embedding grooves 371, the front ends of the terminals 33 extend out of the front ends of the embedding grooves 371 from the front end surface of the covering portion 37. The front end of the insulating body 1 forms a covering end 13, which is configured to cover and fix the front end of the terminal 33 extending from the insertion slot 371, thereby preventing the front end of the terminal 33 from tilting. The side wall of the terminal slot 32 is recessed to form at least one notch 322, which is configured to engage with the terminal 33.

[0030] See also Figure 2 as well as Figures 6 to 8Each terminal 33 has a fixing portion 331, a welding portion 332, a contact portion 333, a chamfer 334, a connecting portion 335, an embedding portion 336, an extension portion 337, and at least one latch portion 338. The fixing portion 331 is fixed to the terminal insulating seat 31. The welding portion 332 extends vertically upward and then backward from the rear end of the fixing portion 331. The welding portion 332 is fixed to the insulating body 1 and extends side by side from the rear end of the insulating body 1 to be soldered to a circuit board (not shown). The contact portion 333 extends forward from the front end of the fixing portion 331. The surface of the contact portion 333 is higher than the surface of the terminal insulating seat 31 to electrically connect with the docking connector (not shown). The front end of the upper surface of the contact portion 333 is tilted forward to form the guide angle 334, and the guide angle 334 is exposed on the surface of the terminal insulation seat 31, thereby guiding the docking of the docking connector (not shown). The front end of the guide angle 334 extends horizontally forward to form the connecting portion 335. In the preferred embodiment of the accompanying drawings, the connecting portion 335 is exposed on the surface of the terminal insulation seat 31, and the surface of the connecting portion 335 is flush with the surface of the terminal insulation seat 31. When implemented specifically, the connecting portion 335 can also be enclosed in the terminal insulation seat 31. The front end of the connecting portion 335 is bent and extended toward the inside of the enclosing portion 37 of the terminal insulation seat 31 to form the embedded portion 336, and the embedded portion 336 is buried in the embedded groove 371, thereby preventing the front end of the terminal 33 from being affected by external force and tilting up when the docking connector (not shown) is docked to the electrical connector 100. The front end of the embedded portion 336 extends horizontally forward to form the extension portion 337. The rear end of the extension portion 337 is fixedly disposed within the embedded slot 371. The front end of the extension portion 337 extends beyond the front end of the embedded slot 371 and extends out of the embedded slot 371 via the front end surface of the covering portion 37. The covering end 13 of the insulating body 1 covers the extension portion 337 to strengthen the positioning and retention of the terminal 33. The outer surface of the fixing portion 331 protrudes outward to form the latch portion 338. The latch portion 338 engages with the notch 322, thereby strengthening the bonding force between the terminal 33 and the terminal insulating seat 31.

[0031] See also Figures 4 to 6The terminal assembly 3 includes a pair of grounding terminals 36, which are located on the left and right sides of the terminals 33. The grounding terminals 36 have substantially the same structure as the terminals 33. The contact portion 333, the chamfer 334, and the connecting portion 335 of the grounding terminals 36 are exposed on the surface of the terminal insulating seat 31. The embedded portion 336 and the extended portion 337 of the grounding terminals 36 extend beyond the front end of the terminal insulating seat 31 and are enclosed and fixed within the enclosing end 13 of the insulating body 1, thereby preventing the front end of the grounding terminals 36 from tilting. In the preferred embodiment shown in the accompanying drawings, the length of the grounding terminals 36 is greater than that of the terminals 33, and the front end of the grounding terminals 36 extends beyond the front end of the terminals 33.

[0032] See also Figure 1 as well as Figures 4 to 6In the preferred embodiment shown in the accompanying drawings, the terminal insulating seat 31 includes an upper terminal seat 34 and a lower terminal seat 35. Both the upper terminal seat 34 and the lower terminal seat 35 have a plurality of terminal slots 32 and a plurality of terminals 33. The terminals 33 of the upper terminal seat 34 and the terminals 33 of the lower terminal seat 35 are arranged symmetrically with each other. The upper terminal seat 34 includes an upper seat 341, an upper tongue plate 342, and a covering portion 37. The upper tongue plate 342 is formed by extending forward from the front end of the upper seat 341. The covering portion 37 is formed at the front end of the upper tongue plate 342 to cover the embedded portion 336 of the terminal 33. The fixing portion 331 of the terminal 33 disposed on the upper terminal block 34 is accommodated in the upper block 341 and the upper tongue plate 342. The contact portion 333 is accommodated in the upper tongue plate 342 and exposed on the upper surface of the upper tongue plate 342 for electrical connection with the mating connector (not shown). The welding portion 332 is exposed at the rear end of the upper block 341. The lower terminal block 35 comprises a lower block 351, a lower tongue plate 352, and a covering portion 37. The lower tongue plate 352 extends forward from the front end of the lower block 351. The covering portion 37 is formed at the front end of the lower tongue plate 352 to cover the embedded portion 336 of the terminal 33. The lower block 351 is aligned with the upper block 341, the lower tongue plate 352 is aligned with the upper tongue plate 342, and the covering portion 37 at the front end of the lower tongue plate 352 is aligned with the covering portion 37 at the front end of the upper tongue plate 342. The fixing portion 331 of the terminal 33 disposed on the lower terminal block 35 is accommodated within the lower block 351 and the lower tongue plate 352. The contact portion 333 is accommodated within the lower tongue plate 35 and exposed from the lower surface of the lower tongue plate 352 for electrical connection with the docking connector (not shown). The soldering portion 332 is exposed from the rear end of the lower block 351. The soldering portions 332 on the upper terminal block 34 and the soldering portions 332 on the lower terminal block 35 are alternately fixed side by side at the rear end of the insulating body 1 for soldering to a circuit board (not shown).

[0033] See also Figure 4The center piece 2 is disposed between the upper row of terminal blocks 34 and the lower row of terminal blocks 35 to shield against signal interference. The center piece 2 is formed by stamping and bending a metal sheet. It comprises a main board 21, a pair of extension plates 22, and a pair of bending arms 23. The extension plates 22 extend outward from the left and right sides of the rear end of the main board 21, respectively. The side edges of the extension plates 22 extend outward to form at least one protrusion 221, which can be configured to connect to a material strip (not shown). The bending arms 23 extend vertically from the left and right sides of the main board 21, respectively, forming a three-dimensional structure for the center piece 2, effectively enhancing the side structural strength of the center piece 2.

[0034] See also Figure 4 and Figure 5 In order to position and fix the center piece 2 and the terminal group 3 to each other, the center piece 2 includes at least one positioning hole 222 formed in the extension plate 22, and the terminal group 3 is provided with a positioning structure that engages with the positioning hole 222. In this embodiment, the positioning structure includes at least one positioning block 3411 formed by protruding downward from the lower surface of the upper seat 341, at least one through-hole 3412 extending through the upper seat 341, at least one positioning post 3511 formed by protruding upward from the upper surface of the lower seat 351, and at least one recessed hole 3512 formed by being recessed in the upper surface of the lower seat 351. The positioning block 3411 passes through the positioning hole 222 and is aligned with the recessed hole 3512, and the positioning post 3511 passes through the positioning hole 222 and is aligned with the through-hole 3412.

[0035] See also Figures 2 to 4 The insulating body 1 includes a main body 11, a tongue 12, and the covering end 13. The tongue 12 is formed by extending forward from the front end of the main body 11. The surface of the tongue 12 is flush with the surface of the terminal insulating seat 31. The covering end 13 is integrally formed at the front end of the tongue 12. The main body 11 covers the upper seat 341 and the lower seat 351, and the tongue 12 covers the upper tongue plate 342 and the lower tongue plate 352. The fixing portion 331 of the terminal 33 is fixedly disposed between the main body 11 and the tongue 12. The contact portion 333, the chamfer 334, and the connecting portion 335 are exposed on the surface of the tongue 12, and the extending portion 337 is embedded in the covering end 13. The main board 21 is located between the upper tongue plate 342 and the lower tongue plate 352 and is fixed in the tongue piece 12. The extension plate 22 is located between the upper seat 341 and the lower seat 351 and is fixed in the main body 11. The bending arm 23 is located on the outside of the terminal group 3 and is fixed on both sides of the tongue piece 12.

[0036] See also Figure 3 The shielding plates 4 are configured to reduce electromagnetic interference. The two shielding plates 4 are respectively coupled to the upper surface of the upper terminal block 34 and the lower surface of the lower terminal block 35 and are mirror images of each other. Each shielding plate 4 includes a first plate portion 41, a second plate portion 42, and two fixing legs 43. The first plate portion 41 is exposed on the surface of the main body 11. The second plate portion 42 is formed by vertically bending the front edge of the first plate portion 41 and then extending horizontally forward. The second plate portion 42 is exposed on the surface of the tongue 12. The two fixing legs 43 are formed by vertically bending the left and right edges of the first plate portion 41 and then extending horizontally outward. The fixing legs 43 are fixedly disposed within the main body 11. The first plate portions 41 of the two shielding plates 4 are respectively attached to the upper surface of the upper seat 341 and the lower surface of the lower seat 351. The second plate portions 42 of the two shielding plates 4 are respectively attached to the upper surface of the upper tongue plate 342 and the lower surface of the lower tongue plate 352. The fixing legs 43 of the two shielding plates 4 are respectively provided on both sides of the upper seat 341 and the lower seat 351. The fixing legs 43 can be fixed to the upper and lower surfaces of the extension plate 22 of the center piece 2 by spot welding to achieve positioning and retention. Furthermore, at least one support block 311 is respectively provided on the upper and lower surfaces of the terminal insulating seat 31. In the preferred embodiment shown in the accompanying drawings, the support block 311 is formed by protruding from the upper surface of the upper terminal seat 34 and the lower surface of the lower terminal seat 35. The support block 311 is provided to support the shielding plate 4, thereby preventing the shielding plate 4 from being encapsulated by glue during the forming process of the insulating body 1.

[0037] During assembly of the electrical connector 100 of the present invention, the terminals 33 are first insert-molded into the upper and lower terminal blocks 34, 35. The inserting portions 336 of the terminals 33 are then embedded in the inserting grooves 371. The upper and lower terminal blocks 34, 35 are then assembled to the upper and lower ends of the center piece 2, respectively. The shielding plates 4 are then assembled to the upper and lower ends of the upper and lower terminal blocks 34, 35, respectively, and secured to the center piece 2 via spot welding. Finally, the insulating body 1 is encased around the center piece 2, the terminal assembly 3, and the shielding plates 4 via a secondary insert-molding process. The extending portions 337 of the terminals 33 are now encased within the encasing ends 13, completing the assembly of the electrical connector 100 of the present invention.

[0038] See also Figure 3 、 Figure 4 and Figure 5In the preferred embodiment shown in the accompanying drawings, a channel 38 is provided on each of the left and right sides of the upper terminal block 34 and the left and right sides of the lower terminal block 35. The channels 38 in the upper terminal block 34 are formed by recesses formed between the surfaces of the upper block 341 and the upper tongue plate 342, while the channels 38 in the lower terminal block 35 are formed by recesses formed between the surfaces of the lower block 351 and the lower tongue plate 352. During the molding process of the insulating body 1, the channels 38 are filled with molten plastic, providing improved plastic fluidity. After the plastic solidifies, they also serve as position limiters, further strengthening the bond between the terminal insulating block 31 and the insulating body 1. The channels 38 in the upper terminal block 34 are located between the adjacent ground terminal 36 and the terminal 33 and extend straight from the upper tongue plate 342 to the upper block 341 along the insertion direction of the electrical connector 100. The channel 38 of the lower row terminal block 35 is located between the adjacent ground terminal 36 and the terminal 33, and extends straight from the lower tongue 352 to the lower seat 351 along the insertion direction of the electrical connector 100. The insulating body 1 is provided with a plurality of embedded strips 14 embedded in the channel 38. The embedded strips 14 are respectively disposed on the left and right sides of the upper and lower surfaces of the insulating body 1.

[0039] In summary, the present invention provides an electrical connector 100 comprising an insulating body 1 and a terminal assembly 3 fixed to the insulating body 1. The terminal assembly 3 comprises a terminal insulating seat 31, terminal slots 32 recessed in the upper and lower surfaces of the terminal insulating seat 31, and terminals 33 received in the terminal slots 32. The front end of the terminal insulating seat 31 is integrally formed with the covering portion 37, the front end of the terminal slot 32 extends toward the interior of the covering portion 37 of the terminal insulating seat 31 to form the embedding slot 371, and the front end of the terminal 33 extends toward the interior of the covering portion 37 of the terminal insulating seat 31 to form the embedding portion 336, which is embedded in the embedding slot 371. The front end of the embedded portion 336 extends forward to form the extension portion 337. The extension portion 337 extends beyond the front end surface of the covering portion 37 and beyond the front end of the embedded slot 371. The covering end 13 of the insulating body 1 covers the extension portion 337 and is connected to the front end surface of the covering portion 37. The upper and lower surfaces of the covering end 13 of the insulating body 1 are flush with the upper and lower surfaces of the covering portion 37. This improves the retaining force between the terminal insulating seat 31 and the terminal 33, enhancing the structural strength of the electrical connector 100 and effectively preventing the front end of the terminal 33 from tilting due to external forces.

Claims

1. An electrical connector, characterized in that: The present invention comprises: an insulating body, the front end of the insulating body integrally forms a covering end; and a terminal group fixed to the insulating body, the terminal group is provided with a terminal insulating seat, a plurality of terminal grooves formed by depressions on the upper and lower surfaces of the terminal insulating seat, a plurality of terminals accommodated in the terminal grooves, a covering portion integrally formed at the front end of the terminal insulating seat and a plurality of embedding grooves extending from the front end of the terminal groove to the interior of the covering portion, the embedding grooves pass through forward to the front end surface of the covering portion, wherein each of the terminals is provided with a fixing portion, a contact portion, a chamfer, an embedding portion and an extension portion, the fixing The fixed portion is fixed in the terminal insulating seat, the contact portion is formed by extending forward from the front end of the fixed portion, the contact portion exposes the upper and lower surfaces of the terminal insulating seat, the chamfer is formed by tilting forward from the front end of the contact portion and is exposed on the surface of the terminal insulating seat, the embedded portion is located at the front end of the chamfer and bends and extends toward the inside of the covering portion and is buried in the embedded groove, the extension portion is formed by extending forward from the front end of the embedded portion, the extension portion is arranged in the embedded groove and extends out from the front end surface of the covering portion and the front end of the embedded groove, and the covering end covers the extension portion.

2. The electrical connector according to claim 1, wherein: Each of the terminals includes a connecting portion, which extends horizontally forward from the front end of the chamfer, the connecting portion is exposed to the surface of the terminal insulating seat and is flush with the surface of the terminal insulating seat, and the embedded portion is formed at the front end of the connecting portion, and the surface of the contact portion is higher than the surface of the terminal insulating seat.

3. The electrical connector according to claim 1, wherein: Each of the terminals includes a connecting portion, which extends forward from the front end of the chamfer. The connecting portion is covered in the terminal insulating seat, and the embedded portion is formed at the front end of the connecting portion.

4. The electrical connector according to claim 1, wherein: The insulating body includes a main body and a tongue, the tongue is formed by extending forward from the front end of the main body, the surface of the tongue is flush with the surface of the terminal insulating seat, the covering end is integrally formed at the front end of the tongue, and the fixing portion is fixed in the main body and the tongue, and the contact portion and the chamfer are exposed on the surface of the tongue.

5. The electrical connector according to claim 4, wherein: The terminal insulating seat includes an upper row terminal seat and a lower row terminal seat, the upper row terminal seat is provided with an upper seat and an upper tongue plate, the upper tongue plate is formed by extending forward from the front end of the upper seat, and the front end of the upper tongue plate is integrally formed with the covering portion, the lower row terminal seat includes a lower seat and a lower tongue plate, the lower tongue plate is formed by extending forward from the front end of the lower seat, and the front end of the lower tongue plate is integrally formed with the covering portion, and wherein the upper seat and the lower seat are aligned with each other and are covered in the main body, and the upper tongue plate and the lower tongue plate are aligned with each other and are covered in the tongue piece.

6. The electrical connector according to claim 5, wherein: A channel is provided on each side of the upper row of terminal seats and on both sides of the lower row of terminal seats. The channel located in the upper row of terminal seats is formed by the depressions of the surface of the upper seat and the surface of the upper tongue plate. The channel located in the lower row of terminal seats is formed by the depressions of the surface of the lower seat and the surface of the lower tongue plate. The insulating body is provided with a plurality of embedded strips embedded in the channels.

7. The electrical connector according to claim 6, wherein: The terminal group includes a pair of grounding terminals, which are located on both sides of several of the terminals. The front ends of the grounding terminals extend out of the front ends of the terminal insulating seats and are covered and fixed in the covering ends. The channel is located between several of the terminals and the grounding terminals.

8. The electrical connector according to claim 1, wherein: The side wall of the terminal slot is recessed to form at least one notch, and the surface of the terminal protrudes outward to form at least one latching portion, which is latched into the notch.

9. The electrical connector according to claim 1, wherein: The electrical connector also includes a center piece and two shielding plates, the center piece is located in the middle of the terminal group, the two shielding plates are respectively arranged on the upper and lower sides of the terminal insulating seat, and at least one support block protrudes from the upper and lower surfaces of the terminal insulating seat to support the shielding plate, wherein each of the shielding plates has a first plate portion, a second plate portion and two fixed legs, the second plate portion is formed by vertically bending the front side edge of the first plate portion and then extending horizontally forward, the first plate portion and the second plate portion are exposed on the surface of the insulating body, the fixed legs are respectively vertically bent from the two side edges of the first plate portion and then extended outward, and the fixed legs are fixed in the insulating body and held on the center piece.

10. The electrical connector according to claim 9, wherein: The central piece is provided with at least one positioning hole, and the terminal insulating seat is provided with a positioning structure combined with the positioning hole.

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