An electrical connector

Abstract

The utility model discloses a kind of electric connectors, comprising: front rubber core, first installation cavity is formed in the front rubber core;Rubber plug, the rubber plug includes splicing part and welding part, the splicing part is connected in the first installation cavity and is buckled with the front rubber core, several covering parts are formed on the splicing part, longitudinal setting exposed through slot is provided between the covering part;First terminal row and second terminal row, the front and rear ends of the first terminal row and second terminal row are respectively provided with terminal contact part, connecting part and terminal welding part, wherein, the first terminal row and second terminal row all include at least one signal terminal, the connecting part of the signal terminal includes several with the covering part position matching shrink section and with the exposed through slot position matching exposure section;Front shell, for wrapping the front rubber core.The utility model guarantees the various characteristics of cable, optimizes the stability of connection structure, improves data transmission quality.

Description

Technical Field

[0001] This utility model relates to the field of cable connector technology, and in particular to an electrical connector. Background Technology

[0002] In current products, the molding of rubber plugs on the terminals alters the dielectric constant of the terminal surface, damaging the characteristic impedance of the terminals. This leads to a mismatch between the characteristic impedance of the plug and the characteristic impedance of the cable, resulting in increased return loss of the cable, reduced data transmission quality, and a higher probability of product defects.

[0003] Furthermore, the current connector's front core and plug structure is too simple. The through slot only has one snap-fit ​​for connection. When it is hit during use, it is easy to loosen, which can cause the terminal to shift position and affect the quality of subsequent insertion and removal.

[0004] To address the shortcomings of existing technology, a new connector needs to be designed to ensure the various characteristics of the cable and improve the quality of data transmission. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned defects in the prior art, and to provide an electrical connector that ensures the various characteristics of the cable, optimizes the stability of the connection structure, and improves the quality of data transmission.

[0006] To achieve the above objectives, this utility model provides an electrical connector, comprising:

[0007] A front core is provided, forming a first mounting cavity, and a first abutting part and a second abutting part are symmetrically arranged on the upper and lower inner walls of the first mounting cavity.

[0008] The rubber stopper includes an insertion part and a welding part. The insertion part passes through the first mounting cavity and is fastened to the front rubber core. A plurality of covering parts are formed on the insertion part. A longitudinally arranged exposed through groove is provided between the covering parts. The insertion part is provided with a first terminal insertion hole and a second terminal insertion hole arranged laterally. A plurality of first welding cavities and second welding cavities are respectively provided at the upper and lower ends of the welding part. The first terminal insertion holes and the second terminal insertion holes are respectively connected to the first welding cavities and the second welding cavities. Two oppositely arranged fasteners are provided at the end of the welding part. Two adjacent first welding cavities or two adjacent second welding cavities are spaced apart to form independent cavities.

[0009] The first terminal block and the second terminal block are provided with terminal contact parts, connecting parts and terminal welding parts. The front end of the terminal contact parts (41) of the first terminal block and the second terminal block forms a terminal abutment part (44) that is opposite to the bending direction of the terminal contact parts (41). The terminal abutment part (44) is inserted into the first terminal insertion hole and the second terminal insertion hole respectively, so that the terminal welding parts of the first terminal block and the second terminal block are respectively placed in the first welding cavity and the second welding cavity for welding. The end of the terminal contact part is placed on the first abutment part and the second abutment part respectively.

[0010] Wherein, the first terminal block and the second terminal block each include at least one signal terminal, and the connection part of the signal terminal includes a plurality of retractable sections that match the position of the cover and an exposed section that matches the position of the exposed through slot, wherein the lateral width of the exposed section is greater than the lateral width of the retractable section.

[0011] Front housing, used to enclose the front rubber core.

[0012] Furthermore, the two sides of the plug portion are provided with second protrusions, and a second snap-fit ​​element and a third snap-fit ​​element are respectively provided at the upper and lower ends of the plug portion. The upper and lower ends of the front rubber core are provided with second snap-fit ​​holes and third snap-fit ​​holes that match the second and third snap-fit ​​elements. By using the second and third snap-fit ​​elements on the upper and lower end faces to engage with the second and third snap-fit ​​holes of the front rubber core, the connection plug and the front rubber core are engaged, providing a double connection stability performance, further preventing loosening and improving the connection performance of the connector.

[0013] Furthermore, the two wings of the rubber stopper form a stepped third and fourth abutment portions, which abut against the rear end faces of the front rubber core and the front shell, respectively. The third and fourth abutment portions are used to engage the front rubber core and the front shell, allowing the front rubber core and the front shell to wrap around the rubber stopper in a stepped manner, making the connection between the three more secure and effectively preventing them from falling off under stress.

[0014] Furthermore, the rubber stopper includes an upper rubber stopper and a lower rubber stopper. A second mounting cavity is provided at the upper end of the lower rubber stopper, and a first snap-fit ​​protrusion is provided on the second mounting cavity. A first snap-fit ​​groove matching the first snap-fit ​​protrusion is provided at the lower end of the lower rubber stopper. The lower rubber stopper is installed in the second mounting cavity such that the first snap-fit ​​protrusion and the first snap-fit ​​groove are inserted into each other. The use of separate upper and lower rubber stoppers facilitates the installation of the first terminal block and the second terminal block. They can be molded and assembled separately and then combined, which greatly improves production efficiency. Moreover, the wall of the second mounting cavity can provide a good limiting effect for the upper rubber stopper. In cooperation with the first snap-fit ​​protrusion, the upper rubber stopper is limited in all directions after being installed in the second mounting cavity, preventing it from falling off.

[0015] Furthermore, a first spacer block protruding upwards is provided between two adjacent first welding cavities, and a second spacer block protruding upwards is provided between two adjacent second welding cavities. The placement of the first and second spacers allows each welding cavity to be separated into an independent chamber, preventing solder overflow during welding that could cause continuity between adjacent welding cavities and affect the normal use of the connector. Moreover, the first and second spacers further increase the solder capacity of the welding cavities, thereby improving welding quality and yield.

[0016] Furthermore, the first abutting part and the second abutting part respectively form a first abutting groove and a second abutting groove. The terminal abutting part is inserted into the first abutting groove or the second abutting groove. A front insertion part 44b is provided at the front end of the terminal abutting part (44). The direct insertion of the terminal abutting part into the first abutting groove and the second abutting groove enables the front end of the terminal contact part to form a force fulcrum. When inserting or removing, it can distribute the squeezing force received by the terminal contact part and maintain the bending degree of the terminal contact part through its own elasticity, continuously clamping the plugged terminals, forming a stable abutting contact, ensuring the conductivity between the terminals, and improving the stability of the connection.

[0017] Furthermore, the first terminal block and the second terminal block are arranged symmetrically, such that the terminal contacts of the first terminal block and the second terminal block are positioned opposite each other, and the terminal contacts of the first terminal block and the second terminal block are staggered. This creates a clamping space between the two terminal blocks, and the staggered arrangement further enhances the clamping effect of the terminal blocks, providing stable conductivity.

[0018] Furthermore, both the first terminal block and the second terminal block include at least two adjacent signal terminals, which are arranged symmetrically along an axis. The use of an equal-length and equidistant perimeter stacking structure enables precise differential impedance control, reduces signal reflection, and effectively suppresses common-mode noise.

[0019] Furthermore, the connection portion of the signal terminal includes a first contraction section, a first transition section, a first exposed section, a second contraction section, a second exposed section, and a third contraction section. Three sets of coverings are provided on the insertion portion to enclose the first, second, and third contraction sections. Two exposed grooves are provided on the insertion portion, with the first and second exposed sections positioned within these grooves. The coverings, formed from insulating material, including the first, second, and third contraction sections, allow for precise control of the dielectric environment and geometry of the signal terminal in this area. The exposed sections (first and second exposed sections) are located on the exposed grooves, meaning that this portion of the conductor is directly exposed to air or a specific environment. This creates a multi-segmented alternating structure of "enclosure-exposure-enclosure-exposure-enclosure" on the connection portion of the signal terminal, enabling precise segmented control of the impedance along the signal path.

[0020] Furthermore, the width of the third contraction section is greater than the width of the first contraction section, which is greater than the width of the second contraction section. The width of the first transition section is smaller than the width of the first exposed section. The widths of the first exposed section, the second exposed section, and the welded section are the same. Since the contraction section is placed in the insulating material, during the conduction process, the dielectric of the signal terminal changes from air to the insulating material, increasing the dielectric constant and decreasing the characteristic impedance. To balance the characteristic impedance, the contraction section embedded in the insulating material needs to be narrowed, creating a width difference between the contraction section and the exposed section to increase the characteristic impedance, reduce the fluctuation of the characteristic impedance curve, and improve the stability of high-frequency signal transmission.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] This invention provides a double-connection and stable performance by setting a second and a third snap-fit ​​component on the upper and lower end faces of the rubber stopper, which works in conjunction with the second and third snap-fit ​​holes of the front rubber core to ensure the snap-fit ​​between the rubber stopper and the front rubber core. Furthermore, the rubber stopper of this invention is a split upper and lower rubber stopper structure, which facilitates the installation of the first terminal block and the second terminal block. They can be molded and assembled separately and then combined, which greatly improves production efficiency. Moreover, the wall of the second mounting cavity can play a good limiting role for the upper rubber stopper. In conjunction with the first snap-fit ​​protrusion, it can ensure that the upper rubber stopper is limited in all directions after being installed in the second mounting cavity, preventing it from falling off.

[0023] The placement of the first and second spacers on the welding section allows each welding cavity to be separated into an independent chamber. This prevents solder from overflowing during the welding process and causing electrical conduction between adjacent welding cavities, which would affect the normal use of the connector. Furthermore, the first and second spacers can further increase the solder capacity of the welding cavity, thereby improving the welding quality and yield.

[0024] The insulating material forming the cover includes a first shrinkage section, a second shrinkage section, and a third shrinkage section, which can precisely control the dielectric environment and geometry of the signal terminal in this area. The exposed sections (first and second exposed sections) are located on the exposed groove, which means that this part of the conductor is directly exposed to the air or a specific environment. This forms a multi-segment alternating structure of "wrapping-exposing-wrapping-exposing-wrapping" on the connection part of the signal terminal, which can achieve precise segmented control of the impedance on the signal path. Since the shrinkage section is placed in the insulating material, the medium of the signal terminal will change from air to insulating material during the conduction process, the dielectric constant will increase and the characteristic impedance will decrease. In order to balance the characteristic impedance, the shrinkage section embedded in the insulating material needs to be narrowed so that the shrinkage section and the exposed section form a width difference to increase the characteristic impedance, reduce the curve fluctuation of the characteristic impedance, and improve the stability of high-frequency signal transmission. Attached Figure Description

[0025] To more clearly illustrate the technology in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of an electrical connector according to the present invention;

[0027] Figure 2 yes Figure 1 A schematic diagram of the decomposition process;

[0028] Figure 3 This is a schematic diagram of the front adhesive core of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the first terminal block and the second terminal block of this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the lower rubber stopper of this utility model;

[0031] Figure 6 yes Figure 5 Another perspective illustration;

[0032] Figure 7 This is a schematic diagram of the structure of the rubber stopper of this utility model;

[0033] Figure 8 This is an assembly diagram of the upper and lower rubber plugs, the first terminal block, and the second terminal block of this utility model;

[0034] Figure 9 This is a top view of the first terminal block of this utility model;

[0035] Figure 10 This is a top view of the second terminal block of this utility model;

[0036] Figure 11 This is a schematic diagram of the front shell of this utility model;

[0037] Figure 12 This is a side view of the terminal.

[0038] The diagram includes:

[0039] 1. Front rubber core; 11. First mounting cavity; 12. First abutting part; 13. Second snap-fit ​​hole; 14. Third snap-fit ​​hole; 121. First abutting groove; 132. Second abutting part; 131. Second abutting groove; 2. Rubber plug; 21. Upper rubber plug; 211. First snap-fit ​​groove; 212. First insertion part; 213. First welding part; 214. Second snap-fit ​​piece; 215. First terminal insertion hole; 216. First welding cavity; 217. First spacer block; 22. Lower rubber plug; 221. Second mounting cavity; 221a. Side wall; 222. First snap-fit ​​protrusion; 223. Second insertion part; 2231. Third abutting part; 224. Second welding part; 2241. Fourth abutting part; 225. Second protrusion ; 226. Third snap-fit ​​component; 227. Second terminal insertion hole; 228. Second welding cavity; 229. Fastener; 220. Second spacer block; 23. Cover part; 24. Exposed through groove; 3. Front shell; 31. Third protrusion; 4a. First terminal block; 4b. Second terminal block; 41. Terminal contact part; 41a. First front end connecting section; 41b. First folding section; 42. Connecting part; 43. Terminal welding part; 44. Terminal abutment part; 44a. Second front end connecting section; 44b. Front end insertion part; 45. Signal terminal; 451. First retractable section; 452. First transition part; 453. First exposed section; 454. Second retractable section; 455. Second exposed section; 456. Third retractable section. Detailed Implementation

[0040] The technology of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second", such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0043] Please see Figures 1 to 12 An embodiment of this utility model provides an electrical connector, including a front rubber core 1, a rubber plug 2, a front shell 3, a first terminal block 4a, and a second terminal block 4b:

[0044] like Figure 1 and Figure 2 As shown, the front shell 3, front rubber core 1, and rubber plug 2 of this utility model are assembled by sequentially snapping together. A first mounting cavity 11 is formed in the front rubber core 1. A first abutting part 12 and abutting part 132 are symmetrically arranged on the upper and lower inner walls of the first mounting cavity 11. The first abutting part 12 and the second abutting part 132 respectively form a first abutting groove 121 and abutting groove 131.

[0045] like Figure 3 and Figure 4 As shown, each terminal of the first terminal block 4a and the second terminal block 4b includes a terminal contact portion 41, a connecting portion 42, and a terminal welding portion 43. The front end of the terminal contact portion 41 forms a terminal abutment portion 44 that is opposite to the bending direction of the terminal contact portion 41. The terminal abutment portion 44 is inserted into the first abutment groove 121 or the second abutment groove 131. In particular, in this embodiment, the first terminal block 4a and the second terminal block 4b are arranged axially symmetrically, so that the terminal contact portions 41 of the first terminal block 4a and the second terminal block 4b are arranged opposite to each other and staggered. In this way, when the mating terminal is inserted, the terminal contact portions 41 of the first terminal block 4a and the second terminal block 4b can clamp the mating terminal from both the top and bottom directions.

[0046] like Figure 12As shown, each terminal of this invention is further provided with a slightly downwardly inclined first front connecting section 41a and a first folding section 41b between the terminal contact portion 41 and the connecting portion 42. The cooperation of the front connecting section and the first folding section 41b allows the terminal contact portion 41 to be arranged in a downwardly inclined configuration, thereby creating a tighter clamping space between the first terminal block 4a and the second terminal block 4b, effectively improving the clamping stability. Furthermore, an upwardly inclined section is also provided between the terminal abutment portion 44 and the terminal contact 41. The second front end connecting section 44a has a front end plug-in section 44b at the front end of the terminal abutment section (44). When the terminal abutment section 44 is inserted into the first abutment groove 121 or the second abutment groove 131, the front end plug-in section 44b can be hooked with the first abutment groove 121 or the second abutment groove 131 to form a force fulcrum. When the mating terminal is inserted into the mating terminal contact section 41 and squeezed, the terminal abutment section 44 can provide a support point and at the same time cooperate with its own elastic reaction to the terminal contact section 41. The terminal contact section 41 will then apply a stronger clamping force to the mating terminal.

[0047] like Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the rubber stopper 2 in this embodiment adopts a split structure, including an upper rubber stopper 21 and a lower rubber stopper 22. A second mounting cavity 221 is provided at the upper end of the lower rubber stopper 22, and a first snap-fit ​​protrusion 222 is provided on the second mounting cavity 221. A first snap-fit ​​groove 211 matching the first snap-fit ​​protrusion 222 is provided at the lower end of the lower rubber stopper 21. The lower rubber stopper 22 is installed in the second mounting cavity 221 so that the first snap-fit ​​protrusion 222 and the first snap-fit ​​groove 211 are inserted to complete the assembly. In particular, the wall of the second mounting cavity 221 is at the same height as the side edge of the upper rubber stopper 21. This allows the wall of the second mounting cavity 221 to play a good limiting role for the upper rubber stopper 21 after it is installed. After the first snap-fit ​​protrusion 222 and the first snap-fit ​​groove 211 are inserted, the position of the upper rubber stopper 21 is limited within the side wall 221a of the second mounting cavity 221, and no further planar displacement will occur.

[0048] The upper plug 21 has a first insertion part 212 and a first welding part 213, and the lower plug 22 has a second insertion part 223 and a second welding part 224. During assembly, the upper plug 21 and the lower plug 22 are first spliced ​​together and then directly inserted into the first mounting cavity 11 and fastened to the front plug core 1, so that the first welding part 213 and the second welding part 224 are both located behind the front plug core 1. The specific structure of the fastening between the plug 2 and the front plug core 1 is as follows: second protrusions 225 are provided on both sides of the second insertion part 223; a second snap-fit ​​member 214 is provided at the upper end of the first insertion part 212; and a third snap-fit ​​member 226 is provided at the lower end of the second insertion part 223. Both the second snap-fit ​​member 214 and the third snap-fit ​​member 226 are triangular structures with a beveled front end and a straight rear end. The upper and lower ends of the front plug core 1 are provided with second snap-fit ​​holes 13 that match the second snap-fit ​​member 214 and the third snap-fit ​​member 226. The third snap-fit ​​hole 14 allows the second snap-fit ​​member 214 of the first insertion part 212 to snap into the second snap-fit ​​hole 13 at the upper end of the front core 1. The third snap-fit ​​member 226 of the second insertion part 223 snaps into the third snap-fit ​​hole 14 at the lower end of the front core 1. The second protrusions 225 on both sides of the first insertion part 212 are press-fitted into the inner walls of the first mounting cavity 11 of the front core 1. Furthermore, the ends of the first abutting part 12 and the second abutting part 132 abut against the front ends of the first insertion part 212 and the second insertion part 223, respectively. After snapping, the second snap-fit ​​member 214, the third snap-fit ​​member 226, the second snap-fit ​​hole 13, and the third snap-fit ​​hole 14 work together to prevent the rubber plug 2 from being pulled backward and falling off. The first abutting part 12 and the second abutting part 132 will block the rubber plug 2 from moving forward. The second protrusion 225 limits the rubber plug 2 to the left and right, preventing it from shaking.

[0049] In this embodiment, three sets of covering portions 23 are formed on both the first plug-in portion 212 and the second plug-in portion 223. A longitudinally arranged exposed through groove 24 is provided between two adjacent covering portions 23. Therefore, two exposed through grooves 24 are formed in this embodiment. The first plug-in portion 212 is provided with a horizontally arranged first terminal plug-in hole 215, and the second plug-in portion 223 is provided with a horizontally arranged second terminal plug-in hole 227. The upper end of the first welding portion 213 is provided with a first welding cavity 216, and the lower end of the second welding portion 224 is provided with a second welding cavity 228. The first terminal plug-in hole 215 and the second terminal plug-in hole 227 are respectively connected to the first welding cavity 216 and the second welding cavity 228. The end of the second welding portion 224 is provided with two oppositely arranged fasteners 229 for the back cover of the connector.

[0050] like Figures 6-8As shown, the first terminal block 4a and the second terminal block 4b are respectively inserted into the first terminal insertion hole 215 and the second terminal insertion hole 227, so that the terminal welding parts 43 of the first terminal block 4a and the second terminal block 4b are respectively placed in the first welding cavity 216 and the second cavity to be welded to the cable. In addition, a first spacer block 217 protruding upward is provided between two adjacent first welding cavities 216, so that each first welding cavity 216 forms an independent cavity. A second spacer block 220 protruding upward is provided between two adjacent second welding cavities 228, so that each second welding cavity 228 forms an independent cavity. The arrangement of the first spacer block 217 and the second spacer block 220 can separate each welding cavity to form an independent chamber. During the welding process, it can prevent solder from overflowing and causing the adjacent welding cavities to conduct, which would affect the normal use of the connector. Furthermore, the first spacer block 217 and the second spacer block 220 can further increase the capacity of the welding cavity to hold solder, thereby further improving the welding quality and yield.

[0051] like Figure 11 As shown, the front shell 3 is used to wrap the front rubber core 1. Preferably, the middle of the two wings of the lower rubber plug 22 forms a stepped third abutment portion 2231 and a fourth abutment portion 2241. The third abutment portion 2231 and the fourth abutment portion 2241 abut against the rear end faces of the front rubber core 1 and the front shell 3, respectively. The third abutment portion 2231 and the fourth abutment portion 2241 are used to abut against the rear end faces of the front rubber core 1 and the front shell 3, respectively, so that the front rubber core 1 and the front shell 3 can wrap the rubber plug 2 in a stepped distribution, and cannot move backward after connection to achieve positioning. Preferably, there is also a third protrusion 31 on the rear inner wall of the front shell 3. The third protrusion 31 and the side wall of the fourth abutment portion 2241 are interference fit to achieve further limiting, so that the connection and fixation of the three are more secure and can effectively prevent the situation of falling off under force.

[0052] In this embodiment, as Figure 9 and Figure 10As shown, both the first terminal block 4a and the second terminal block 4b include at least two signal terminals 45. In this embodiment, the first terminal block 4a is a 9-pin terminal block, and the second terminal block 4b is a 10-pin terminal block. Of course, different numbers of terminals can be selected according to actual needs, which will not be listed one by one. In this embodiment, a total of four signal terminals 45 are provided. Two adjacent signal terminals 45 are arranged symmetrically along an axis, and the connection part 42 of each signal terminal 45 includes several retractable sections that match the position of the cover part 23 and exposed sections that match the position of the exposed through groove 24. The exposed section has a wider lateral width than the retracted section. Specifically, the connection portion 42 of each signal terminal 45 includes a first retracted section 451, a first transition portion 452, a first exposed section 453, a second retracted section 454, a second exposed section 455, and a third retracted section 456. Three sets of covering portions 23 are provided on the insertion portion to cover the first retracted section 451, the second retracted section 454, and the third retracted section 456. Two exposed grooves are provided on the insertion portion, with the first exposed section 453 and the second exposed section 455 placed in these grooves, and the third retracted section 456... The width of the first contraction section 451 is greater than the width of the second contraction section 454. The width of the first transition section 452 is less than the width of the first exposed section 453. The widths of the first exposed section 453, the second exposed section 455, and the welded section are the same. The cover 23, formed of insulating material, includes the first contraction section 451, the second contraction section 454, and the third contraction section 456. It can precisely control the dielectric environment and geometry of the signal terminal 45 in this area. The exposed sections (first and second exposed sections 455) are located on the exposed groove, which means that this part of the conductor is directly exposed to air or a specific environment. In this environment, a multi-segment alternating structure of "wrapping-exposing-wrapping-exposing-wrapping" is formed on the connection part 42 of the signal terminal 45, which can achieve precise segmented control of the impedance on the signal path. When the shrinking section is placed in the insulating material, the medium of the signal terminal 45 will change from air to insulating material during the conduction process, the dielectric constant will increase and the characteristic impedance will decrease. In order to balance the characteristic impedance, the shrinking section embedded in the insulating material needs to be narrowed so that the shrinking section and the exposed section form a width difference to increase the characteristic impedance, reduce the curve fluctuation of the characteristic impedance, and improve the stability of high frequency signal transmission.

[0053] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An electrical connector, characterized in that, include: A front core (1) is formed in the front core (1), and a first mounting cavity (11) is formed in the front core (1). A first abutting part (12) and a second abutting part (132) are symmetrically arranged on the upper and lower inner walls of the first mounting cavity (11). A rubber plug (2) includes an insertion part and a welding part. The insertion part passes through the first mounting cavity (11) and is fastened to the front rubber core (1). A plurality of covering parts (23) are formed on the insertion part. A longitudinally arranged exposed through groove (24) is provided between the covering parts (23). A first terminal insertion hole (215) and a second terminal insertion hole (227) are provided on the insertion part. A plurality of first welding cavities (216) and second welding cavities (228) are provided at the upper and lower ends of the welding part. The first terminal insertion hole (215) and the second terminal insertion hole (227) are respectively connected to the first welding cavity (216) and the second welding cavity (228). Two oppositely arranged fasteners (229) are provided at the end of the welding part. The two adjacent first welding cavities (216) or the two adjacent second welding cavities (228) are spaced apart to form independent cavities. The first terminal block (4a) and the second terminal block (4b) are provided with terminal contact portions (41), connecting portions (42) and terminal welding portions (43) at their terminals. The front end of the terminal contact portions (41) of the first terminal block (4a) and the second terminal block (4b) forms terminal abutment portions (44) that are opposite to the bending direction of the terminal contact portions (41). The terminal abutment portions (44) are respectively inserted into the first terminal insertion hole (215) and the second terminal insertion hole (227), so that the terminal welding portions (43) of the first terminal block (4a) and the second terminal block (4b) are respectively placed in the first welding cavity (216) and the second welding cavity (228) for welding. The end of the terminal contact portion (41) is respectively placed on the first abutment portion (12) and the second abutment portion (132). The first terminal block (4a) and the second terminal block (4b) each include at least one signal terminal (45). The connecting part (42) of the signal terminal (45) includes a plurality of retractable sections that match the position of the covering part (23) and an exposed section that matches the position of the exposed through groove (24). The lateral width of the exposed section is greater than the lateral width of the retractable section. Front shell (3) is used to enclose the front core (1).

2. An electrical connector according to claim 1, characterized in that, The two sides of the plug portion are provided with a second protrusion (225), and a second snap-fit ​​member (214) and a third snap-fit ​​member (226) are respectively provided at the upper and lower ends of the plug portion. The upper and lower ends of the front core (1) are provided with a second snap-fit ​​hole (13) and a third snap-fit ​​hole (14) that match the second snap-fit ​​member (214) and the third snap-fit ​​member (226).

3. An electrical connector according to claim 2, characterized in that, The two sides of the rubber stopper (2) form a stepped third abutment portion (2231) and a fourth abutment portion (2241), which abut against the rear end face of the front rubber core (1) and the front shell (3), respectively.

4. An electrical connector according to claim 1, characterized in that, The rubber plug (2) includes an upper rubber plug (21) and a lower rubber plug (22). A second mounting cavity (221) is provided at the upper end of the lower rubber plug (22). A first snap-fit ​​protrusion (222) is provided on the second mounting cavity (221). A first snap-fit ​​groove (211) matching the first snap-fit ​​protrusion (222) is provided at the lower end of the lower rubber plug (22). The lower rubber plug (22) is installed in the second mounting cavity (221) so that the first snap-fit ​​protrusion (222) is inserted into the first snap-fit ​​groove (211).

5. An electrical connector according to claim 1, characterized in that, A first spacer block (217) with an upward protrusion is provided between two adjacent first welding cavities (216), and a second spacer block (220) with an upward protrusion is provided between two adjacent second welding cavities (228).

6. An electrical connector according to claim 1, characterized in that, The first abutting part (12) and the second abutting part (132) respectively form a first abutting groove (121) and a second abutting groove (131). The terminal abutting part (44) is inserted into the first abutting groove (121) or the second abutting groove (131). A front end insertion part (44b) is provided at the front end of the terminal abutting part (44).

7. An electrical connector according to claim 1, characterized in that, The first terminal block (4a) and the second terminal block (4b) are arranged symmetrically on an axis, such that the terminal contact portions (41) of the first terminal block (4a) and the second terminal block (4b) are arranged opposite to each other, and the terminal contact portions (41) of the first terminal block (4a) and the second terminal block (4b) are arranged in a staggered manner.

8. An electrical connector according to claim 1, characterized in that, The first terminal block (4a) and the second terminal block (4b) each include at least two adjacent signal terminals (45), which are arranged symmetrically along an axis.

9. An electrical connector according to claim 8, characterized in that, The connection portion (42) of the signal terminal (45) includes a first contraction section (451), a first transition section (452), a first exposed section (453), a second contraction section (454), a second exposed section (455), and a third contraction section (456). Three sets of covering portions (23) are provided on the plug-in portion to cover the first contraction section (451), the second contraction section (454), and the third contraction section (456). Two exposed grooves are provided on the plug-in portion, and the first exposed section (453) and the second exposed section (455) are placed on the exposed grooves.

10. An electrical connector according to claim 9, characterized in that, The width of the third contraction section (456) is greater than the width of the first contraction section (451) and greater than the width of the second contraction section (454). The width of the first transition section (452) is less than the width of the first exposed section (453). The widths of the first exposed section (453), the second exposed section (455), and the welded section are the same.

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