Electrical connector assembly

Abstract

The application discloses an electric connector assembly, which comprises a socket connector and a plug connector. The plug connector comprises a plastic shell provided with a mounting groove and a hole position; a soft rubber dustproof pad is arranged in the mounting groove, a protruding part of the soft rubber dustproof pad is clamped and fixed in the hole position, the protruding part is provided with a plurality of elastic petals which are mutually butted, and a containing groove for containing the deformed elastic petals is formed at the rear end of the soft rubber dustproof pad; in a normal state, the plurality of elastic petals are mutually butted to close the hole position; an insulating base is provided with a mounting position and a counterplug hole; a plurality of terminals are each pressed into the mounting position in the longitudinal direction, and a thrust and retreat structure is formed, and a lead-through part at the front end of the terminal is exposed to the rear side of the counterplug hole; after the terminal rear end is riveted and fixed with a lead wire, the terminal is longitudinally assembled and fixed with the insulating base, and then is transversely inserted and fixed in the mounting groove of the plastic shell; the front end surface of the insulating base is used for pressing the rear end surface of the soft rubber dustproof pad to fasten the soft rubber dustproof pad in the plastic shell, and the counterplug hole is exposed to the rear side of the containing groove.

Description

Technical Field

[0001] This invention relates to the field of connector product technology, and specifically to an electrical connector assembly. Background Technology

[0002] The main supporting fields for connectors include new energy, transportation, communications, networking, IT, medical, home appliances, and military electronic products. The rapid development of product technology and the rapid growth of the market in these supporting fields have strongly driven the development of connector technology. To date, connectors have evolved into a series of specialized products with a complete range of categories, rich specifications, diverse structural types, segmented professional directions, distinct industry characteristics, and standardized systems.

[0003] Chinese invention patent application number 202521681649.4 discloses a connector socket, including a socket body for insertion onto a circuit board. One side of the socket body has a insertion groove into which a plug body connected to a cable is inserted. An integrally formed mounting plate is formed on the outer wall of the socket body, with mounting holes on its four sides. The socket body also includes a sealing ring made of elastic material. The sealing ring is fitted onto the outer wall of the socket body and abuts against the mounting plate. Through holes aligned with the mounting holes are formed on its four sides. During socket body installation, the mounting plate is inserted into the circuit board and connected to the circuit board via bolts passing through the mounting holes. The mounting plate forms a barrier between the outer wall of the socket body and the circuit board. Simultaneously, the sealing ring fitted onto the outer wall of the socket body and abuts against the mounting plate reduces rainwater seepage from the gap between the socket body and the mounting point, improving the sealing performance of the connector socket and the mounting point.

[0004] After the plug body and socket body are inserted, they can achieve a sealed assembly through the sealing ring. However, before the plug body is inserted into the socket body, the plug body's interface is in an open state, making it easy for dust and other foreign objects to enter. This can affect the insertion of the socket terminals in the socket body. At the same time, dust and other foreign objects that enter the interface can also easily adhere to the plug terminals exposed in the plug body's interface, thus affecting the conductivity of the plug terminals.

[0005] In view of the above, the inventors propose the following technical solution. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an electrical connector assembly.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The electrical connector assembly includes a socket connector and a plug connector that can be interlocked and conduct electricity. The plug connector includes: a plastic shell with a mounting groove at its rear end and a hole at its front end; a soft rubber dustproof pad installed in the mounting groove, with a protrusion formed at the front end of the soft rubber dustproof pad being engaged and positioned in the hole. The protrusion has multiple interlocking elastic flaps, and the rear end of the soft rubber dustproof pad, corresponding to the position of the protrusion, also has a receiving groove for accommodating the deformed elastic flaps; under normal conditions, Multiple elastic flaps are joined together to seal the holes; an insulating base has a mounting position extending through its rear end face, and the front end of the insulating base has a mating hole facing rearward; multiple terminals are pressed into the mounting position in the longitudinal direction to form a thrust-resistant and anti-reverse structure, and the lead portion of the front end of the terminal is exposed on the rear side of the mating hole; after the rear end of the terminal is riveted to fix the wire, it is then longitudinally assembled and fixed with the insulating base, and then laterally inserted into and fixed in the mounting groove of the plastic shell, and the front end face of the insulating base presses against the rear end face of the soft rubber dustproof pad to fasten the soft rubber dustproof pad in the plastic shell, and the mating hole is exposed on the rear side of the receiving groove.

[0008] Furthermore, in the above technical solution, the mounting position includes a first mounting hole penetrating the upper and lower end faces of the middle and front of the insulating base, a second mounting hole penetrating the upper and lower end faces of the rear of the insulating base, and a partition wall located between the first mounting hole and the second mounting hole; the terminal is provided with a positioning groove in the middle, and the terminal is longitudinally sleeved in the partition wall through the positioning groove to form a thrust-stopping and anti-reverse structure, and the lead portion at the front end of the terminal is placed in the first mounting hole, and the wiring portion at the rear end of the terminal is placed in the second mounting hole.

[0009] Furthermore, in the above technical solution, the first mounting hole has inwardly protruding first bosses and second bosses respectively formed on both sides; the terminal includes a main body and a first side plate and a second side plate formed upward along the front sides of the main body, a first elastic arm and a second elastic arm formed along the front ends of the first side plate and the second side plate respectively, a third side plate and a fourth side plate formed upward along the rear sides of the main body, and a connection part integrally formed on the rear of the main body and used for riveting and fixing with the metal core of the wire. The first elastic arm and the second elastic arm are symmetrically distributed, and the front ends of the first elastic arm and the second elastic arm are bent to form the guide part. The positioning groove is formed between the first side plate and the third side plate and between the second side plate and the fourth side plate. The outer surfaces of the rear ends of the first elastic arm and the second elastic arm respectively contact the inner surfaces of the first bosses and the second bosses to form positioning in the left and right direction, and the rear ends of the first elastic arm and the second elastic arm are spaced apart from the inner walls on both sides of the first mounting hole.

[0010] Furthermore, in the above technical solution, a first reinforcing rib is stamped at the bending position between the first side plate and the first elastic arm, and a second reinforcing rib is stamped at the bending position between the second side plate and the second elastic arm; an axially distributed arc-shaped guide groove is formed on the inner side of the guide portion, and a reinforcing rib is formed on the outer side of the guide portion corresponding to the arc-shaped guide groove; wherein, the spacing between the two arc-shaped guide grooves is smaller than the diameter of the insertion hole, and an inclined guide surface is formed at the front end of the arc-shaped guide groove of the guide portion.

[0011] Furthermore, in the above technical solution, the main body is also formed with a butt joint rib stamped from bottom to top in the middle, which abuts against the lower end face of the partition wall; horizontally protruding baffles are also formed on both sides of the middle of the main body, which abut against the periphery of the lower end of the installation position.

[0012] Furthermore, in the above technical solution, the inner wall of the mounting groove is also formed with multiple positioning ribs, and the upper end face of each positioning rib is in contact with the lower end face of a terminal to form a longitudinal pressing positioning of the terminal, so that the terminal is fixed in the mounting position; the bottom surface of the insulating seat is also formed with multiple positioning bosses, the bottom surface of which contacts the inner wall of the mounting groove for positioning, and the positioning boss is located between two positioning ribs.

[0013] Furthermore, in the above technical solution, the lower end of the soft rubber dustproof pad is also provided with multiple positioning grooves, which are fitted onto the positioning protrusions to form a positioning.

[0014] Furthermore, in the above technical solution, both sides of the insulating base are formed with arc-shaped positioning protrusions, and the lower end face of the insulating base is formed with several positioning buckles; both sides of the mounting groove of the plastic shell are provided with arc-shaped positioning surfaces adapted to the arc-shaped positioning protrusions, and the inner wall of the mounting groove is also provided with locking holes. After the insulating base is inserted into the mounting groove, the arc-shaped positioning protrusions mate with the arc-shaped positioning surfaces to form circumferential positioning, and the positioning buckles are locked with the locking holes to form axial locking.

[0015] Furthermore, in the above technical solution, the socket connector includes an insulator and a plurality of pins fixed in the insulator. The insulator is fixed inside the product housing. The front end of the pin passes through the terminal hole of the product housing to be exposed in the mating shell provided in the product housing. The mating shell has a slot for inserting a plug connector.

[0016] Furthermore, in the above technical solution, the insulator has a mating protrusion formed at its front end, and an annular groove is formed at the rearward end of the insulator. The inner wall of the annular groove is smoothly connected to the outer wall of the mating protrusion, and a rectangular sealing ring is axially installed in the annular groove. The annular groove provides circumferential positioning for the sealing ring, and a step is formed between the front end face of the sealing ring and the front end face of the mating protrusion. The annular groove also penetrates the upper end face of the insulator, so that the upper end face of the sealing ring is also exposed on the upper end face of the insulator. Extending lugs are formed on both sides of the insulator, and the extending lugs have second countersunk holes. The inner wall of the product housing has a stepped groove and threaded grooves on both sides of the stepped groove. The mating protrusion is embedded in the stepped groove, and the outer periphery of the stepped groove opening is pressed against the step. The front end face of the sealing ring is pressed against the stepped groove to form a sealed assembly. The front end face of the extending lug contacts the inner wall of the product housing, and a second screw passes through the second countersunk hole and the threaded groove for screw fixing to lock the insulator to the inner wall of the product housing.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] 1. This invention adds a plastic shell to accommodate the insulating base, and also adds a soft rubber dustproof pad between the insulating base and the plastic shell. The protruding part at the front end of the soft rubber dustproof pad is embedded and positioned in the hole of the plastic shell, and the rear end of the soft rubber dustproof pad is pressed by the insulating base to ensure that the soft rubber dustproof pad is stably installed between the insulating base and the plastic shell. At the same time, the protruding part has multiple interlocking elastic petals, and the rear end of the soft rubber dustproof pad corresponding to the position of the protruding part also has a receiving groove for accommodating the deformed elastic petals. In the normal state, the multiple elastic petals are interlocked to close the hole, thereby achieving an effective dustproof effect and effectively preventing foreign objects from entering the plastic shell. It will not affect the normal insertion of the pins of the socket connector, so as to form a stable conductivity with the terminal later. When the pins of the socket connector are mated with the plug connector, the pins directly contact the protrusion of the soft rubber dustproof pad exposed at the front end of the plastic housing. As the pin is inserted, the elastic flaps of the protrusion elastically deform backward, pressing the ends of the elastic flaps into the receiving groove and wrapping around the pin. The pin then continues to insert, passing through the mating hole of the insulating base and contacting the conductive part at the front end of the terminal to establish electrical continuity. The elastic flaps wrapping around the pin increase the friction with the pin, thereby enhancing the insertion and extraction force of the plug and socket connectors and preventing accidental disengagement.

[0019] 2. In this invention, after the terminal is riveted to the rear end and fixed with the wire, it is then longitudinally assembled and fixed with the insulating base, and then laterally inserted into and fixed in the mounting groove of the plastic shell. This method differs from the conventional method of inserting the terminal into the insulating base laterally. The terminal and the insulating base are assembled longitudinally, which is convenient for installation and can form a thrust-stop and anti-reverse structure to ensure that the terminal is stably installed in the insulating base. The terminal cannot move forward or backward relative to the insulating base, thus ensuring the stability of the assembly structure. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention.

[0021] Figure 2 This is a cross-sectional view of the present invention.

[0022] Figure 3 This is a perspective view of the plug connector in this invention.

[0023] Figure 4 This is a perspective view of the plug connector in this invention from another angle.

[0024] Figure 5 This is an exploded perspective view of the plug connector in this invention.

[0025] Figure 6 This is a cross-sectional view of the plug connector in this invention.

[0026] Figure 7 This is a cross-sectional view of the plug connector in this invention from another perspective.

[0027] Figure 8 This is an assembly diagram of the insulating base and terminals in this invention.

[0028] Figure 9 This is a perspective view of the plug connector after the plastic shell has been removed in this invention.

[0029] Figure 10 This is a three-dimensional view of the plastic shell in this invention.

[0030] Figure 11 This is a perspective view of the insulating base in this invention.

[0031] Figure 12 This is a perspective view of the terminal in this invention.

[0032] Figure 13 This is a perspective view of the terminal in this invention from another angle.

[0033] Figure 14 This is a perspective view of the socket connector in this invention.

[0034] Figure 15 This is a perspective view of the socket connector in this invention from another angle. Detailed Implementation

[0035] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0036] See Figure 1-15 As shown, an electrical connector assembly includes a socket connector 500 and a plug connector 100 that are mutually pluggable and conductive.

[0037] The plug connector 100 includes: a plastic shell 1, a soft rubber dustproof pad 2, an insulating base 3, and multiple terminals 4. The terminals 4 are riveted with wires and then fixedly assembled with the insulating base 3. The soft rubber dustproof pad 2 is first installed inside the plastic shell 1, and the combination of the insulating base 3 and the terminals 4 is then installed inside the plastic shell 1. The insulating base 3 presses against the soft rubber dustproof pad 2, thereby confining the soft rubber dustproof pad 2 inside the plastic shell 1. The elastic flaps 211 in the soft rubber dustproof pad 2 that close to each other seal the holes 12 of the plastic shell 1 to prevent external dust and other foreign objects from entering the interior of the plastic shell 1, thereby achieving the purpose of efficient dust prevention.

[0038] Specifically, the assembly structure of each component in the aforementioned plug connector 100 is as follows:

[0039] The plastic shell 1 has a mounting groove 11 extending forward at its rear end and a hole 12 extending backward at its front end. The soft rubber dustproof pad 2 is installed in the mounting groove 11, and the protrusion 21 formed at the front end of the soft rubber dustproof pad 2 is engaged and positioned in the hole 12. The protrusion 21 has multiple interlocking elastic flaps 211. The rear end of the soft rubber dustproof pad 2 also has a receiving groove 22 for accommodating the deformed elastic flaps 211 at the position corresponding to the protrusion 21. In the normal state, the multiple elastic flaps 211 are interlocked to close the hole 12, thereby achieving an effective dustproof effect and preventing foreign objects from entering the plastic shell 1. The insulating base 3 has a mounting position 31 that extends through its rear end face. The insulating base 3 has a rearward opening for the insertion hole 32 at its front end; each terminal 4 is pressed into the mounting position 31 in the longitudinal direction and forms a thrust-stop structure to ensure that the terminal 4 is stably installed in the insulating base 3 and that the terminal 4 cannot move forward or backward relative to the insulating base 3, thus ensuring the stability of the assembly structure. The lead portion 40 at the front end of the terminal 4 is exposed behind the insertion hole 32. After the rear end of the terminal 4 is riveted and fixed with the wire, it is then longitudinally assembled and fixed with the insulating base 3, and then laterally inserted into and fixed in the mounting groove 11 of the plastic shell 1. The front end face of the insulating base 3 presses against the rear end face of the soft rubber dustproof pad 2 to fasten the soft rubber dustproof pad 2 into the plastic shell 1, and the insertion hole 32 is exposed behind the receiving groove 22. In other words, the present invention adds a plastic shell 1 to accommodate the insulating base 3, and also adds the soft rubber dustproof pad 2 between the insulating base 3 and the plastic shell 1. The protrusion 21 at the front end of the soft rubber dustproof pad 2 is fitted and positioned in the hole 12 of the plastic shell 1, and the rear end of the soft rubber dustproof pad 2 is pressed by the insulating base 3 to ensure that the soft rubber dustproof pad 2 is stably installed between the insulating base 3 and the plastic shell 1. At the same time, the protrusion 21 has multiple interlocking elastic petals 211. The rear end of the soft rubber dustproof pad 2, corresponding to the position of the protrusion 21, also has a receiving groove 22 for accommodating the deformed elastic petals 211. In the normal state, the multiple elastic petals 211 are interlocked to close the hole 12, thereby achieving an effective dustproof effect and effectively preventing foreign objects from entering the plastic shell 1. It will not affect the normal insertion of the pins 6 of the socket connector 500, so as to form a stable conductive performance with the terminal later. When the pin 6 of the socket connector 500 is inserted into the plug connector 100, the pin 6 directly contacts the protrusion 21 of the soft rubber dustproof pad 2 exposed at the front end of the plastic shell 1. As the pin 6 is inserted, the elastic flap 211 of the protrusion 21 elastically deforms backward, pressing the end of the elastic flap 211 into the receiving groove 22 and wrapping around the pin 6. Subsequently, the pin 6 continues to insert, passing through the mating hole 32 of the insulating base 3, and contacts the conductive portion 40 at the front end of the terminal 4 to form an electrical connection. The elastic flap 211, after wrapping around the pin 6, increases the friction with the pin 6, thereby enhancing the insertion and extraction force of the plug connector 100 and the socket connector 500, preventing accidental disengagement.Furthermore, in this invention, after the terminal 4 is riveted to the rear end and fixed with the wire, it is then longitudinally assembled and fixed with the insulating base 3, and then laterally inserted into and fixed in the mounting groove 11 of the plastic shell 1. This method differs from the conventional method of inserting the terminal laterally into the insulating base. The terminal 4 is longitudinally assembled with the insulating base 3, which is convenient for installation and can form a thrust-stop and anti-reverse structure to ensure that the terminal 4 is stably installed in the insulating base 3. Moreover, the terminal 4 cannot move forward or backward relative to the insulating base 3, thus ensuring the stability of the assembly structure.

[0040] The assembly structure of terminal 4 and insulating base 3 is described below.

[0041] The mounting position 31 includes a first mounting hole 311 penetrating the upper and lower end faces of the middle and front of the insulating base 3, a second mounting hole 312 penetrating the upper and lower end faces of the rear of the insulating base 3, and a partition wall 313 located between the first mounting hole 311 and the second mounting hole 312. Correspondingly, the terminal 4 has a positioning groove 400 in the middle. The terminal 4 is longitudinally sleeved in the partition wall 313 through the positioning groove 400 to form a push-stop and anti-reverse structure, ensuring the stability of the assembly of the terminal 4 and the insulating base 3. The guide part 40 at the front end of the terminal 4 is placed in the first mounting hole 311, and the wiring part 48 at the rear end of the terminal 4 is placed in the second mounting hole 312 to complete the assembly of the terminal 4 and the insulating base 3.

[0042] In addition, the first mounting hole 311 has a first boss 315 and a second boss 314 that are respectively formed on both sides, protruding inward and distributed opposite to each other.

[0043] The terminal 4 includes a main body 41, a first side plate 42 and a second side plate 43 formed upwards along both sides of the front end of the main body 41, a first elastic arm 44 and a second elastic arm 45 extended along the front ends of the first side plate 42 and the second side plate 43 respectively, a third side plate 46 and a fourth side plate 47 formed upwards along both sides of the rear end of the main body 41, and a connection part 48 integrally formed on the rear end of the main body 41 for riveting and fixing with the metal core of the conductor. The first elastic arm 44 and the second elastic arm 45 are symmetrically distributed, and the front ends of the first elastic arm 44 and the second elastic arm 45 are bent to form the conductive part 40. The positioning groove 400 is formed between the first side plate 42 and the third side plate 46 and between the second side plate 43 and the fourth side plate 47. The outer rear end surfaces of the first spring arm 44 and the second spring arm 45 respectively contact the inner surfaces of the first boss 315 and the second boss 314 to form a left-right positioning, and the rear ends of the first spring arm 44 and the second spring arm 45 are spaced apart from the inner walls on both sides of the first mounting hole 311, so that the first spring arm 44 and the second spring arm 45 can elastically deform outward after the guide part 40 contacts the pin 6, so as to form a stable guide with the pin 6.

[0044] To enhance the structural strength of the first elastic arm 44 and the second elastic arm 45, the following design was also made: a first reinforcing rib 441 was stamped at the bending position between the first side plate 42 and the first elastic arm 44, and a second reinforcing rib 451 was stamped at the bending position between the second side plate 43 and the second elastic arm 45.

[0045] The cross-section of the pin 6 is circular. Correspondingly, the inner surface of the guide portion 40 is formed with axially distributed arc-shaped guide grooves 401. The distance between the two arc-shaped guide grooves 401 is smaller than the diameter of the insertion hole 32. Furthermore, the guide portion 40 has an inclined guide surface 403 formed at the front end of the arc-shaped guide grooves 401. When the pin 6 contacts the terminal 4, the end of the pin 6 first contacts the inclined guide surface 403, and is guided by the inclined guide surface 403 to the space between the two guide portions 40. It can better enter between the two arc-shaped guide grooves 401. As the pin 6 continues to be inserted, the pin 6 simultaneously contacts the two arc-shaped guide grooves 401. Its contact area is large, and the conduction performance is more stable. It also squeezes the two guide parts 40 from the inside out to drive the first spring arm 44 and the second spring arm 45 to expand outward. Then, the first spring arm 44 and the second spring arm 45 generate elastic force to drive the guide part 40 to clamp from the outside in, thereby stabilizing the clamping of the pin 6 to form a stable assembly structure and more stable conduction performance.

[0046] The outer side of the guide portion 40 is provided with a reinforcing rib 402 corresponding to the arc guide groove 401, thereby improving the structural strength of the guide portion 40 and making the contact between the guide portion 40 and the pin 6 more stable.

[0047] Furthermore, the main body 41 is also stamped with a mating rib 411 from bottom to top in the middle. This mating rib 411 abuts against the lower end face of the partition wall 313. The contact area is smaller, but the contact is more stable. This allows the partition wall 313 to more stably clamp the main body 41 between the partition wall 313 and the mounting groove 11 of the plastic shell 1, thereby stably installing the terminal 4 between the insulating base 3 and the plastic shell 1, thus improving the overall quality of the plug connector 100. In addition, the bottom of the insulating base 3 is also provided with a groove 301 that matches the mating rib 411. The mating rib 411 mates with the groove 301 to form a positioning, further improving the stability of the assembly structure of the terminal 4 and the insulating base 3.

[0048] Furthermore, horizontally protruding baffles 412 are formed on both sides of the middle part of the main body 41. The baffles 412 abut against the outer periphery of the lower end of the mounting position 31, and later the bottom surface of the baffles 412 also contacts the inner wall of the mounting groove 11, so that the partition wall 313 and the mounting groove 11 of the plastic shell 1 can more stably clamp the main body 41, and further stably install the terminal 4 between the insulating base 3 and the plastic shell 1, thereby further improving the quality of the entire plug connector 100.

[0049] The inner wall of the mounting groove 11 is also formed with multiple positioning ribs 111. The upper end face of each positioning rib 111 contacts the lower end face of a terminal 4 to form a longitudinal pressing and positioning of the terminal 4, fixing the terminal 4 in the mounting position 31. This, in turn, cooperates with the insulating seat 3 to more stably clamp the terminal 4, further improving the overall quality of the plug connector 100. In addition, the bottom surface of the insulating seat 3 is also formed with multiple positioning bosses 33. The bottom surface of the positioning bosses 33 contacts the inner wall of the mounting groove 11 for positioning, and the positioning bosses 33 are located between two positioning ribs 111, making the insulating seat 3 more stably positioned in the mounting groove 11. The lower end of the soft rubber dustproof pad 2 is also provided with multiple positioning grooves 23. The positioning grooves 23 are fitted onto the positioning ribs 111 to form a positioning, thereby preventing the soft rubber dustproof pad 2 from flipping during installation, ensuring that the soft rubber dustproof pad 2 can be more stably installed in the mounting groove 11, and improving the assembly quality.

[0050] The rear end of the positioning rib 111 is also provided with a guide slope 110. The guide slope 110 can first contact the terminal, and as the insulating seat 3 continues to be inserted into the mounting groove 11, the contact between the guide slope 110 and the terminal 4 will become increasingly firm, so that after the terminal 4 passes the guide slope 110 and contacts the upper end of the positioning rib 111, it can form a tensioned and fixed end.

[0051] To ensure the stability of the assembly between the insulating base 3 and the mounting groove 11, the following design is also made: both sides of the insulating base 3 are formed with arc-shaped positioning protrusions 34, and the lower end face of the insulating base 3 is formed with several positioning buckles 35; both sides of the mounting groove 11 of the plastic shell 1 are provided with arc-shaped positioning surfaces 112 that are adapted to the arc-shaped positioning protrusions 34, and the inner wall of the mounting groove 11 is also provided with locking holes 113. After the insulating base 3 is inserted into the mounting groove 11, the arc-shaped positioning protrusions 34 and the arc-shaped positioning surfaces 112 are aligned to form circumferential positioning, and the positioning buckles 35 are locked with the locking holes 113 to form axial locking. The assembly structure is extremely stable, further improving the quality of the entire plug connector 100.

[0052] The plastic shell 1 has a retaining wall 14 formed at its rear. The front end of the retaining wall 14 serves as a mating part 15 for inserting into the mating slot 721 described below. The insulating seat 3 serves as a mounting part 16 at the rear end of the retaining wall 14. Both sides of the mounting part 16 have protruding mounting lugs 161. Each mounting lug 161 has a first countersunk hole 162 for the first screw to pass through. Furthermore, the mounting lug 161 has an outwardly protruding positioning ring 163 around the rear opening of the first countersunk hole 162, and a positioning ring 163 is located next to the positioning ring 163. The positioning groove 164 on the side is used to assemble the plastic shell 1 with the product shell. The mounting part 16 is inserted into the mounting groove of the product shell, and the wire connected to the terminal 4 is passed into the product shell. The positioning ring 163 and the positioning groove 164 are connected to the positioning ring groove and positioning boss on the periphery of the product shell to form a double concave-convex positioning structure to ensure the stability of positioning. Later, the first screw passes through the first countersunk hole 162 of the mounting lug 161 and is screwed into the threaded groove of the product shell to achieve the purpose of locking, thereby fixing the entire plug connector 100 to the product shell.

[0053] The rear end of the plastic shell 1 is provided with a notch 13 that passes through the mounting groove 11. The installation structure of the plastic shell 1, the insulating base 3, and the terminals can be viewed through the notch 13 to ensure the stability of the assembly structure.

[0054] Combination Figure 2 as well as Figure 14-15 As shown, the socket connector 500 includes an insulator 5 and a plurality of pins 6 fixed in the insulator 5. The insulator 5 is fixed inside the product housing 7. The front end of the pin 6 passes through the terminal hole 71 of the product housing 7 and is exposed in the mating shell 72 provided in the product housing 7. The mating shell 72 has a mating slot 721 for the plug connector 100 to be inserted. That is to say, the socket connector 500 itself does not have a mating slot, but the mating shell 72 is provided by the product housing 7, thereby reducing the structural complexity of the socket connector 500 and facilitating the sealing assembly of the socket connector 500 and the product housing 7.

[0055] The insulator 5 has a mating protrusion 51 formed at its front end, and an annular groove 52 is formed rearward at the front end of the insulator 5. The inner wall of the annular groove 52 smoothly connects with the outer wall of the mating protrusion 51. A rectangular sealing ring 53 is axially installed in the annular groove 52, and the annular groove 52 provides circumferential positioning for the sealing ring 53. The front face of the sealing ring 53 and the front face of the mating protrusion 51 form a step 511. The annular groove 52 also penetrates the upper end face of the insulator 5, so that the upper end face of the sealing ring 53 is also exposed on the upper end face of the insulator 5. Extending lugs 54 are also formed on both sides of the insulator 5. The extension lug 54 is provided with a second countersunk hole 541; the inner wall of the product housing 7 is formed with a stepped groove 73 and threaded grooves on both sides of the stepped groove 73. The mating protrusion 51 is embedded in the stepped groove 73 to form a mating positioning, and the outer periphery of the opening of the stepped groove 73 presses on the step 511. The front end face of the sealing ring 53 is pressed into contact with the stepped groove 73 to form a sealed assembly; the front end face of the extension lug 54 contacts the inner wall of the product housing 7, and the second screw passes through the second countersunk hole 541 and is screwed into the threaded groove to lock the insulator 5 to the inner wall of the product housing 7. Its assembly structure is simple and stable.

[0056] The rear end of the pin 6 is provided with an enlarged conductive cylinder 61. The outer periphery of the conductive cylinder 61 is provided with a connecting groove 611. The wire or metal connector is wound in the connecting groove 611 to form an electrical connection with the conductive cylinder 61. The rear end of the insulator 5 is provided with a groove 50. The end of the wire or metal connector passes through the groove 50 and extends out of the insulator 5.

[0057] In summary, this invention adds a plastic shell 1 to accommodate the insulating base 3, and also adds a soft rubber dustproof pad 2 between the insulating base 3 and the plastic shell 1. The protrusion 21 at the front end of the soft rubber dustproof pad 2 is fitted and positioned in the hole 12 of the plastic shell 1, and the rear end of the soft rubber dustproof pad 2 is pressed by the insulating base 3 to ensure that the soft rubber dustproof pad 2 is stably installed between the insulating base 3 and the plastic shell 1. At the same time, the protrusion 21 has multiple interlocking elastic flaps 211, and the rear end of the soft rubber dustproof pad 2, corresponding to the position of the protrusion 21, also has a receiving groove 22 for accommodating the deformed elastic flaps 211. In the normal state, the multiple elastic flaps 211 are interlocked to close the hole 12, thereby achieving an effective dustproof effect and effectively preventing foreign objects from entering the plastic shell 1. It will not affect the normal insertion of the pins 6 of the socket connector 500, so as to form a stable conductive performance with the terminal later. When the pin 6 of the socket connector 500 is inserted into the plug connector 100, the pin 6 directly contacts the protrusion 21 of the soft rubber dustproof pad 2 exposed at the front end of the plastic shell 1. As the pin 6 is inserted, the elastic flap 211 of the protrusion 21 elastically deforms backward, pressing the end of the elastic flap 211 into the receiving groove 22 and wrapping around the pin 6. Subsequently, the pin 6 continues to insert, passing through the mating hole 32 of the insulating base 3, and contacts the conductive portion 40 at the front end of the terminal 4 to form an electrical connection. The elastic flap 211, after wrapping around the pin 6, increases the friction with the pin 6, thereby enhancing the insertion and extraction force of the plug connector 100 and the socket connector 500, preventing accidental disengagement. In this invention, after the terminal 4 is riveted to the rear end and fixed with the wire, it is then longitudinally assembled and fixed with the insulating base 3, and then laterally inserted into and fixed in the mounting groove 11 of the plastic shell 1. This method differs from the conventional method of inserting the terminal laterally into the insulating base. The terminal 4 is longitudinally assembled with the insulating base 3, which is convenient to install and can form a thrust-stop and anti-reverse structure to ensure that the terminal 4 is stably installed in the insulating base 3. The terminal 4 cannot move forward or backward relative to the insulating base 3, thus ensuring the stability of the assembly structure.

[0058] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An electrical connector assembly comprising a socket connector (500) and a plug connector (100) capable of mutual mating and conducting, characterized in that, The plug connector (100) includes: The plastic shell (1) has a mounting groove (11) at its rear end and a hole (12) at its front end. A soft rubber dustproof pad (2) is installed in the mounting groove (11), and the protrusion (21) formed at the front end of the soft rubber dustproof pad (2) is fitted and positioned in the hole (12). The protrusion (21) has multiple interlocking elastic flaps (211). The rear end of the soft rubber dustproof pad (2) is also formed with a receiving groove (22) for accommodating the deformed elastic flaps (211). Under normal conditions, the multiple elastic flaps (211) are interlocked to close the hole (12). An insulating base (3) is provided with a mounting position (31) that extends through its rear end face, and the front end of the insulating base (3) is provided with a mating hole (32). Multiple terminals (4), each terminal (4) is pressed into the mounting position (31) in the longitudinal direction and forms a thrust-stop structure, and the lead part (40) at the front end of the terminal (4) is exposed on the back side of the insertion hole (32); After the terminal (4) is riveted to fix the wire at the rear end, it is then longitudinally assembled and fixed with the insulating base (3), and then horizontally inserted into and fixed in the mounting groove (11) of the plastic shell (1). The front end face of the insulating base (3) presses against the rear end face of the soft rubber dustproof pad (2) to fasten the soft rubber dustproof pad (2) in the plastic shell (1), and the pair of insertion holes (32) are exposed on the rear side of the receiving groove (22).

2. The electrical connector assembly according to claim 1, characterized in that: The mounting position (31) includes a first mounting hole (311) penetrating the upper and lower end faces of the middle and front of the insulating base (3), a second mounting hole (312) penetrating the upper and lower end faces of the rear of the insulating base (3), and a partition wall (313) located between the first mounting hole (311) and the second mounting hole (312); the terminal (4) is provided with a positioning groove (400) in the middle, and the terminal (4) is longitudinally sleeved in the partition wall (313) through the positioning groove (400) to form a push-stop and back-stop structure, and the lead part (40) at the front end of the terminal (4) is placed in the first mounting hole (311), and the wiring part (48) at the rear end of the terminal (4) is placed in the second mounting hole (312).

3. The electrical connector assembly according to claim 2, characterized in that: The first mounting hole (311) has a first boss (315) and a second boss (314) that are respectively formed on both sides and protrude inward and are distributed opposite to each other; the terminal (4) includes a main body (41) and a first side plate (42) and a second side plate (43) formed upward along the front sides of the main body (41), a first elastic arm (44) and a second elastic arm (45) formed along the front sides of the first side plate (42) and the second side plate (43), a third side plate (46) and a fourth side plate (47) formed upward along the rear sides of the main body (41), and a connection part (48) integrally formed on the rear of the main body (41) for riveting and fixing with the metal core of the wire. The first spring arm (44) and the second spring arm (45) are symmetrically distributed, and the front ends of the first spring arm (44) and the second spring arm (45) are bent to form the guide part (40). The positioning groove (400) is formed between the first side plate (42) and the third side plate (46) and between the second side plate (43) and the fourth side plate (47). The outer side of the rear end of the first spring arm (44) and the second spring arm (45) respectively contact the inner side of the first boss (315) and the second boss (314) to form a left-right positioning, and the rear ends of the first spring arm (44) and the second spring arm (45) are spaced apart from the inner walls on both sides of the first mounting hole (311).

4. The electrical connector assembly according to claim 3, characterized in that: The first side plate (42) and the first spring arm (44) are bent together and a first reinforcing rib (441) is stamped together. The second side plate (43) and the second spring arm (45) are bent together and a second reinforcing rib (451) is stamped together. The inner side of the guide part (40) is formed with an axially distributed arc guide groove (401), and the outer side of the guide part (40) is formed with a reinforcing rib part (402) corresponding to the arc guide groove (401). The distance between the two arc guide grooves (401) is smaller than the diameter of the insertion hole (32), and the guide part (40) is also formed with an inclined guide surface (403) at the front end of the arc guide groove (401).

5. The electrical connector assembly according to claim 3, characterized in that: The main body (41) is also formed by pressing a butt rib (411) from bottom to top in the middle, and the butt rib (411) abuts against the lower end face of the partition wall (313); the main body (41) is also formed with horizontally protruding baffles (412) on both sides of the middle, and the baffles (412) abut against the periphery of the lower end of the mounting position (31).

6. The electrical connector assembly according to claim 3, characterized in that: The inner wall of the mounting groove (11) is also formed with a plurality of positioning ribs (111). The upper end face of each positioning rib (111) is in contact with the lower end face of a terminal (4) to form a longitudinal pressing positioning of the terminal (4) so ​​that the terminal (4) is fixed in the mounting position (31). The bottom surface of the insulating seat (3) is also formed with a plurality of positioning bosses (33). The bottom surface of the positioning bosses (33) is in contact with the inner wall of the mounting groove (11) for positioning, and the positioning bosses (33) are located between two positioning ribs (111).

7. The electrical connector assembly according to claim 6, characterized in that: The lower end of the soft rubber dustproof pad (2) is also provided with multiple positioning grooves (23), which are fitted onto the positioning ribs (111) to form a positioning.

8. The electrical connector assembly according to claim 6, characterized in that: Both sides of the insulating seat (3) are formed with arc-shaped positioning protrusions (34), and the lower end face of the insulating seat (3) is formed with several positioning buckles (35); both sides of the mounting groove (11) of the plastic shell (1) are provided with arc-shaped positioning surfaces (112) that are adapted to the arc-shaped positioning protrusions (34), and the inner wall of the mounting groove (11) is also provided with a locking hole (113). After the insulating seat (3) is inserted into the mounting groove (11), the arc-shaped positioning protrusions (34) and the arc-shaped positioning surfaces (112) are connected to form circumferential positioning, and the positioning buckles (35) and the locking holes (113) are locked together to form axial locking.

9. The electrical connector assembly according to any one of claims 1-8, characterized in that: The socket connector (500) includes an insulator (5) and a plurality of pins (6) fixed in the insulator (5). The insulator (5) is fixed inside the product housing (7). The front end of the pin (6) passes through the terminal hole (71) of the product housing (7) to be exposed in the mating shell (72) provided in the product housing (7). The mating shell (72) has a mating slot (721) for the plug connector (100) to be inserted.

10. The electrical connector assembly according to claim 9, characterized in that: The insulator (5) has a mating protrusion (51) formed at its front end, and an annular groove (52) is formed at the rearward front end of the insulator (5). The inner wall of the annular groove (52) is smoothly connected to the outer wall of the mating protrusion (51), and a rectangular sealing ring (53) is axially installed in the annular groove (52). The annular groove (52) provides circumferential positioning for the sealing ring (53), and a step (511) is formed between the front end face of the sealing ring (53) and the front end face of the mating protrusion (51). The annular groove (52) also penetrates the upper end face of the insulator (5), so that the upper end face of the sealing ring (53) is also exposed on the upper end face of the insulator (5). The insulator (5) also has two sides formed The product housing (7) has an extended lug (54) with a second countersunk hole (541). The inner wall of the product housing (7) is formed with a stepped groove (73) and threaded grooves on both sides of the stepped groove (73). The mating protrusion (51) is embedded in the stepped groove (73), and the outer periphery of the opening of the stepped groove (73) is pressed on the step (511). The front end face of the sealing ring (53) is pressed into contact with the stepped groove (73) to form a sealed assembly. The front end face of the extended lug (54) is in contact with the inner wall of the product housing (7). The second screw passes through the second countersunk hole (541) and is screwed into the threaded groove to lock the insulator (5) to the inner wall of the product housing (7).

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