Anti-withdrawing plug connector, plug assembling method and connector mechanism

Abstract

The invention belongs to the technical field of connectors, and particularly relates to an anti-retreating plug connector, a plug assembling method and a connector mechanism. In the anti-retreating plug connector, a plug insulating seat is provided with a first terminal through hole, a guide groove, a side groove, a preassembling clamping groove and an assembling clamping groove; the pre-assembled buckle comprises a stop block, and an elastic buckle and a base which are connected with the stop block; the base is inserted into the guide groove in a sliding manner; the shielding cylinder is sleeved on the plug insulating seat; the plug insulating seat and the shielding cylinder are both mounted in the first internal space of the plug shell; the plug terminal is installed in the first terminal through hole. The elastic buckle slides into the assembling clamping groove from the pre-assembling clamping groove, and the stop block slides into the first terminal through hole from the side groove and limits the plug terminal in the first terminal through hole. According to the invention, the pre-assembled buckle can be pre-assembled on the plug insulating seat, so that the accident that the pre-assembled buckle falls off is avoided; the pre-assembling buckle can slide from the pre-assembling position to the clamping position, so that the assembling convenience of the anti-retreating plug connector is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of connectors, and in particular relates to an anti-retraction plug connector, a plug assembly method and a connector mechanism. Background Art

[0002] An electrical connector is a common electronic device that realizes the function of current and / or signal transmission through the contact of connecting terminals. An electrical connector generally includes a male connector and a female connector, each of which has a connecting terminal built in. By plugging and unplugging the male connector and the female connector, the connecting terminals between the male connector and the female connector are connected or disconnected to realize the conduction or disconnection of current and / or signal transmission.

[0003] The plug electrical connector generally includes a housing, a plug insulating seat and a plug terminal, wherein the plug terminal is installed in the plug insulating seat, and the plug insulating seat is installed in the housing; in order to prevent the plug terminal from being withdrawn from the plug insulating seat, the plug electrical connector also includes a latch installed on the plug insulating seat, wherein the latch extends into the plug terminal, so that the latch can prevent the plug terminal from being withdrawn from the plug insulating seat. In the prior art, after the plug insulating seat is installed in the housing, it is transported to the client together with the latch, and after the client installs the plug terminal in the plug insulating seat, the latch is directly installed on the plug insulating seat. This not only has the technical problem of inconvenient assembly operation, but also requires the latch and the plug insulating seat to be sent to the client separately, and the latch is prone to falling. Summary of the invention

[0004] The embodiments of the present invention provide an anti-retraction plug connector, a plug assembly method and a connector mechanism to solve the technical problems of inconvenient assembly operation of electrical connectors in the prior art.

[0005] An embodiment of the present invention provides an anti-retraction plug connector, comprising a plug housing, a plug insulating seat, a pre-installed buckle, a shielding cylinder, and a plug terminal provided with a limiting portion; The plug insulating seat is provided with a first terminal through hole and a guide groove and a side groove both connected to the first terminal through hole, and the side wall of the guide groove is provided with a pre-installed card slot and an assembly card slot; the distance between the pre-installed card slot and the first terminal through hole is greater than the distance between the assembly card slot and the first terminal through hole; The pre-installed buckle includes a stopper, an elastic buckle and a base both connected to the stopper; the base is slidably inserted in the guide groove; the shielding cylinder is sleeved on the plug insulating seat, and the pre-installed buckle is located in the first inner hole of the shielding cylinder; the plug insulating seat and the shielding cylinder are both installed in the first internal space of the plug housing; The plug terminal is installed in the first terminal through-hole; when the elastic buckle slides from the pre-installed card slot to the assembly card slot, the stopper slides into the first terminal through-hole from the side slot, and the plug terminal is limited in the first terminal through-hole by the limiting portion.

[0006] Optionally, the anti-retreat plug connector further includes a cable and a fastener, and the cable is connected to the plug terminal through the fastener; a slope for avoiding the fastener is provided on the stopper.

[0007] Optionally, a plurality of outward flanges and a plurality of inward flanges are respectively provided at opposite ends of the shielding cylinder at intervals, the outward flanges are abutted against the stop edge of the plug housing, and the inward flanges are abutted against the fastener; Inner elastic pieces and outer elastic pieces are provided on the side wall of the shielding cylinder, the inner elastic pieces extend towards the first inner hole and are abutted against the plug insulating seat, and the inner elastic pieces extend in a direction away from the first inner hole and are abutted against the plug housing.

[0008] Optionally, an annular groove is further provided on the plug insulating seat around the first terminal through-hole, the guide groove and the side groove.

[0009] Optionally, the anti-retreat plug connector further includes a waterproof sealing ring, an end cover and a cable connecting the plug terminal, the waterproof sealing ring is installed in the first inner hole and sleeved on the cable; the end cover is detachably installed on the plug housing and is used for pressing the waterproof sealing ring in the first internal space.

[0010] Optionally, a snap bump is provided on the outer wall of the plug housing, an elastic snap ring is provided on the end cover, and the end cover is installed on the plug housing through the snap bump clamped in the elastic snap ring.

[0011] An embodiment of the present invention further provides a plug assembly method, which is applied to the above-mentioned anti-retreat plug connector, and includes: Insert the base into the guide groove, and the elastic buckle is clamped in the pre-installed card slot, and the stopper is located in the side slot; Socket the shielding cylinder on the plug insulating seat, and the pre-installed buckle is located in the first inner hole of the shielding cylinder; Install both the plug insulating seat and the shielding cylinder in the first internal space of the plug housing; After the cable is connected to the plug terminal, install the plug terminal in the first terminal through-hole; Push the pre - installed buckle towards one end of the first terminal through - hole until the elastic buckle is snapped into the assembly card slot, the stopper slides from the side slot into the first terminal through - hole, and the plug terminal is limited in the first terminal through - hole by the limiting portion.

[0012] An embodiment of the present invention further provides a connector mechanism, including a socket connector and the above - mentioned anti - withdrawal plug connector; the socket connector includes a socket housing, socket terminals, and a socket insulating base provided with a second terminal through - hole, the socket terminals are installed in the second internal space of the socket housing, and the socket terminals are installed in the second terminal through - hole; When the socket housing is installed on the plug housing, the socket terminals are connected to the plug terminals.

[0013] Optionally, a side hole communicating with the second terminal through - hole is further provided on the side wall of the socket insulating base, and a buckle protrusion is provided on the inner wall of the second terminal through - hole; The socket connector further includes a socket buckle, the socket buckle includes a socket holder provided with a side groove and an elastic hook connected to the inner wall of the side groove; The socket holder is inserted into the second terminal through - hole through the side hole, and the elastic hook is snapped with the buckle protrusion, and the socket holder is used to limit the socket terminals in the second terminal through - hole.

[0014] Optionally, a terminal claw is provided on the plug terminal, and the socket terminal is inserted into the terminal claw.

[0015] In the present invention, the base of the pre - installed buckle is inserted into the guide groove of the plug insulating base, and the elastic buckle of the pre - installed buckle is inserted into the pre - installed card slot of the plug insulating base. At this time, the stopper of the pre - installed buckle is located in the side slot of the plug insulating base and outside the first terminal through - hole, and the pre - installed buckle is pre - assembled on the plug insulating base; after the shielding cylinder is sleeved on the plug insulating base, the plug insulating base and the shielding cylinder are installed in the first internal space of the plug housing, and the pre - installed buckle is located in the first inner hole of the shielding cylinder, so that the pre - installed buckle can limit the pre - installed buckle on the plug insulating base from the outside, avoiding the accident that the pre - installed buckle falls off during the process of handling the anti - withdrawal plug connector.

[0016] After connecting the cable to the plug terminal, the plug terminal is installed in the first terminal through-hole; the pre-installed snap is pushed towards one end of the first terminal through-hole until the elastic snap is snapped into the assembly slot, and the stopper slides from the side slot into the first terminal through-hole, and the plug terminal is limited in the first terminal through-hole by the limiting portion, and the stopper abuts against the limiting portion to limit the plug terminal in the first terminal through-hole, ensuring the stability of the plug terminal installed in the first terminal through-hole. In the present invention, the pre-installed snap can be pre-installed on the plug insulating base to avoid the accident of the pre-installed snap falling off; and the pre-installed snap can slide from the pre-installed position to the snap-in position, improving the convenience of assembling the anti-withdrawal plug connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of an anti-withdrawal plug connector provided by an embodiment of the present invention; Figure 2 is an exploded structural diagram of an anti-withdrawal plug connector provided by an embodiment of the present invention; Figure 3 is a schematic structural diagram of a plug insulating base of an anti-withdrawal plug connector provided by an embodiment of the present invention; Figure 4 is a schematic structural diagram of a pre-installed snap of an anti-withdrawal plug connector provided by an embodiment of the present invention; Figure 5 is a schematic structural diagram of a shielding cylinder of an anti-withdrawal plug connector provided by an embodiment of the present invention; Figure 6 is a schematic structural diagram of a socket connector provided by an embodiment of the present invention; Figure 7 is an exploded structural diagram of a socket connector provided by an embodiment of the present invention; Figure 8 is a schematic structural diagram of a socket snap of a socket connector provided by an embodiment of the present invention.

[0019] The reference numerals in the specification are as follows: 10. Anti-withdrawal plug connector; 1. Plug housing; 11. First internal space; 12. Snap bump; 2. Plug insulating base; 21. First terminal through hole; 22. Guide groove; 23. Side groove; 24. Pre-assembled card slot; 25. Assembly card slot; 26. Annular groove; 3. Pre-assembled snap; 31. Block; 311. Inclined surface; 32. Elastic snap; 33. Base; 4. Shielding cylinder; 41. Flanged edge; 42. Inward flanged edge; 43. Inner elastic piece; 44. Outer elastic piece; 5. Plug terminal; 51. Limiting part; 52. Terminal claw; 6. Cable; 7. Waterproof sealing ring; 8. End cover; 81. Elastic snap ring; 20. Socket connector; 201. Socket housing; 2011. Second internal space; 202. Socket terminal; 203. Socket insulating base; 2031. Second terminal through hole; 2032. Side hole; 204. Socket snap; 2041. Card seat; 2042. Elastic catch. Detailed implementation mode

[0020] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] As Figures 1 to 4 shown, an embodiment of the present invention provides an anti-withdrawal plug connector 10, including a plug housing 1, a plug insulating base 2, a pre-assembled snap 3, a shielding cylinder 4, and a plug terminal 5 provided with a limiting part 51; The plug insulating base 2 is provided with a first terminal through-hole 21, a guide groove 22 and a side groove 23 which are all communicated with the first terminal through-hole 21. A pre-assembly card slot 24 and an assembly card slot 25 are arranged on the side wall of the guide groove 22; the distance between the pre-assembly card slot 24 and the first terminal through-hole 21 is greater than the distance between the assembly card slot 25 and the first terminal through-hole 21; it can be understood that the assembly card slot 25 is located between the pre-assembly card slot 24 and the first terminal through-hole 21, and the guide groove 22 and the side groove 23 are both arranged on the side wall of the plug insulating base 2.

[0024] The pre-assembly buckle 3 includes a stop block 31, an elastic buckle 32 and a base 33 which are all connected to the stop block 31; the base 33 is slidably inserted into the guide groove 22; the shielding cylinder 4 is sleeved on the plug insulating base 2, and the pre-assembly buckle 3 is located in the first inner hole of the shielding cylinder 4; the plug insulating base 2 and the shielding cylinder 4 are both installed in the first internal space 11 of the plug housing 1; it can be understood that the stop block 31, the elastic buckle 32 and the base 33 are integrally formed, and the elastic buckle 32 is located above the base 33. Preferably, the guide groove 22 is a T-shaped guide groove 22, and the base 33 is inserted into the guide groove 22, so that the pre-assembly buckle 3 can be limited on the plug insulating base 2 in the up and down direction.

[0025] The plug terminal 5 is installed in the first terminal through-hole 21; when the elastic buckle 32 slides from the pre-assembly card slot 24 to the assembly card slot 25, the stop block 31 slides into the first terminal through-hole 21 from the side groove 23, and the plug terminal 5 is limited in the first terminal through-hole 21 through the limiting portion 51.

[0026] In the present invention, the base 33 of the pre-assembly buckle 3 is inserted into the guide groove 22 of the plug insulating base 2, and the elastic buckle 32 of the pre-assembly buckle 3 is inserted into the pre-assembly card slot 24 of the plug insulating base 2. At this time, the stop block 31 of the pre-assembly buckle 3 is located in the side groove 23 of the plug insulating base 2 and outside the first terminal through-hole 21, and the pre-assembly buckle 3 is pre-assembled on the plug insulating base 2; after the shielding cylinder 4 is sleeved on the plug insulating base 2, the plug insulating base 2 and the shielding cylinder 4 are installed in the first internal space 11 of the plug housing 1, and the pre-assembly buckle 3 is located in the first inner hole of the shielding cylinder 4, so that the pre-assembly buckle 3 can limit the pre-assembly buckle 3 on the plug insulating base 2 from the outside, avoiding the accident that the pre-assembly buckle 3 falls off during the process of carrying the anti-retreat plug connector 10.

[0027] After connecting the cable 6 to the plug terminal 5, the plug terminal 5 is then installed in the first terminal through-hole 21; the pre-installed buckle 3 is pushed towards one end of the first terminal through-hole 21 until the elastic buckle 32 is snapped into the assembly slot 25, and the stop block 31 slides into the first terminal through-hole 21 from the side slot 23, and the plug terminal 5 is limited in the first terminal through-hole 21 by the limiting portion 51. The stop block 31 abuts against the limiting portion 51 to limit the plug terminal 5 in the first terminal through-hole 21, ensuring the stability of the plug terminal 5 installed in the first terminal through-hole 21. In the present invention, the pre-installed buckle 3 can be pre-installed on the plug insulating base 2 to avoid the accident of the pre-installed buckle 3 falling off; and the pre-installed buckle 3 can slide from the pre-installed position to the clamping position, improving the assembly convenience of the anti-withdrawal plug connector 10.

[0028] Further described, the pre-installed buckle 3 is pre-assembled on the plug insulating base 2, the shielding cylinder 4 is sleeved on the plug insulating base 2, and the plug insulating base 2 is installed inside the plug housing 1. These pre-installation steps are completed by the manufacturer; the plug terminal 5 is installed in the first terminal through-hole 21, and the pre-installed buckle 3 slides to the clamping position. These assembly steps are completed at the client side.

[0029] In one embodiment, as Figure 1 shown, the anti-withdrawal plug connector 10 further includes a cable 6 and a fastener (not shown in the figure). The cable 6 is connected to the plug terminal 5 through the fastener; a slope 311 for avoiding the fastener is provided on the stop block 31. It can be understood that the fastener includes but is not limited to a clamp, etc. The fastener is located in the first terminal through-hole 21, and the fastener is located below the slope 311. Thus, the width of the pre-installed buckle 3 can be made relatively small, improving the anti-withdrawal plug connector 10 and reducing the occupied space of the anti-withdrawal plug connector 10.

[0030] In one embodiment, as Figure 5As shown, the opposite ends of the shielding tube 4 are respectively provided with a plurality of outer flanges 41 and a plurality of inner flanges 42 which are spaced apart. The outer flanges 41 abut against the retaining edge of the plug housing 1, and the inner flanges 42 abut against the fasteners. It can be understood that the number of the outer flanges 41 and the inner flanges 42 can be set according to actual needs, and the outer flanges 41 extend toward the outside of the first inner hole, and the inner flanges 42 extend toward the inside of the first inner hole. Specifically, when the anti-retraction plug connector 10 is installed on the socket connector 20, the socket connector 20 can press the outer flanges 41 against the plug housing 1, ensuring the stability of the shielding tube 4 sleeved on the plug insulating seat 2; the inner flanges 42 are pressed around the fasteners, ensuring the stability of the fasteners installed in the first terminal through holes 21.

[0031] In one embodiment, if Figure 5 As shown, an inner spring piece 43 and an outer spring piece 44 are provided on the side wall of the shielding cylinder 4, the inner spring piece 43 extends toward the first inner hole and abuts against the plug insulating seat 2, and the inner spring piece 43 extends in a direction away from the first inner hole and abuts against the plug housing 1. It can be understood that a first limiting groove is provided on the side wall of the plug insulating seat 2, the inner spring piece 43 is inserted into the first limiting groove, and the inner spring piece 43 abuts against the inner wall of the first limiting groove, and the inner spring piece 43 can ensure the stability of the shielding cylinder 4 sleeved on the plug insulating seat 2; a second limiting groove is provided on the inner wall of the first internal space 11, and the outer spring piece 44 abuts against the inner wall of the second limiting groove, and the outer spring piece 44 can ensure the stability of the shielding cylinder 4 and the plug insulating seat 2 installed in the plug housing 1.

[0032] In one embodiment, if Figure 3 As shown, the plug insulating seat 2 is further provided with an annular groove 26 arranged around the first terminal through hole 21, the guide groove 22 and the side groove 23. It can be understood that the annular groove 26 surrounds the plug terminal 5 and the pre-installed buckle 3. Since the volume of the pre-installed buckle 3 and the plug insulating seat 2 in the present application is relatively small, the accident of current breakdown on the plug terminal 5 is avoided. The annular groove 26 increases the creepage distance of the plug terminal 5, ensures the safety of the anti-retraction plug connector 10, and is also conducive to the miniaturization and integrated design of the anti-retraction plug connector 10.

[0033] In one embodiment, if Figure 1 and Figure 2As shown, the anti-disengagement plug connector 10 further includes a waterproof sealing ring 7, an end cap 8, and a cable 6 connecting the plug terminals 5. The waterproof sealing ring 7 is installed in the first internal space and sleeved on the cable 6. The end cap 8 is detachably installed on the plug housing 1 and is used to press the waterproof sealing ring 7 in the first internal space 11. It can be understood that the end cap 8 can be detachably installed on the plug housing 1 through a snap structure or the like. A part of the cable 6 is located outside the plug housing 1, and another part of the cable 6 extends into the first terminal through hole 21 and is connected to the plug terminal 5. In the present invention, the design of the waterproof sealing ring 7 can prevent external moisture from entering the inside of the anti-disengagement plug connector 10 from one end of the end cap 8, improving the waterproof level of the anti-disengagement plug connector 10.

[0034] In one embodiment, a plurality of annular water storage grooves are axially and spacedly distributed on the outer wall of the waterproof sealing ring 7. The design of the plurality of annular water storage grooves further improves the waterproof level of the anti-disengagement plug connector 10.

[0035] In one embodiment, as Figure 1 and Figure 2 shown, a snap projection 12 is provided on the outer wall of the plug housing 1, and an elastic snap ring 81 is provided on the end cap 8. The end cap 8 is installed on the plug housing 1 by the snap projection 12 snapped into the elastic snap ring 81. It can be understood that when the end cap 8 covers the plug housing 1, the elastic snap ring 81 will automatically snap onto the snap projection 12. In this embodiment, the disassembly and assembly operation between the end cap 8 and the plug housing 1 is simple.

[0036] Another embodiment of the present invention further provides a plug assembly method, which is applied to the above anti-disengagement plug connector 10 and includes: S100. Insert the base 33 into the guide groove 22, and the elastic buckle 32 is snapped into the pre-installed card slot 24, and the stopper 31 is located in the side groove 23. It can be understood that the base 33 slides into the guide groove 22 from the side until the elastic buckle 32 is snapped into the pre-installed card slot 24, and the stopper 31 is located outside the first terminal through hole 21, so that the pre-installed buckle 3 is pre-assembled on the plug insulating seat 2, and no falling accident will occur between the pre-installed buckle 3 and the plug insulating seat 2.

[0037] S200. Slip the shielding cylinder 4 over the plug insulating base 2, with the pre-installed buckle 3 positioned within the first inner hole of the shielding cylinder 4. Understandably, the end of the base 33 remote from the first terminal through-hole 21 abuts against the inner wall of the shielding cylinder 4, such that the shielding cylinder 4 can peripherally restrain the pre-installed buckle 3 on the plug insulating base 2, further preventing the accident of the pre-installed buckle 3 falling off the plug insulating base 2.

[0038] S300. Install both the plug insulating base 2 and the shielding cylinder 4 within the first internal space 11 of the plug housing 1. Understandably, the side of the base 33 facing away from the first terminal through-hole 21 is located outside the plug insulating base 2, and the pre-installed buckle 3 is located outside the plug housing 1, enabling a user to push the pre-installed buckle 3 using a tool such as a screwdriver.

[0039] S400. After connecting the cable 6 to the plug terminal 5, install the plug terminal 5 within the first terminal through-hole 21. Understandably, the cable 6 can be fixedly connected to the plug terminal 5 through a clamp or the like, with the plug terminal 5 and a portion of the cable 6 inserted into the first terminal through-hole 21. Since the stopper 31 is located outside the terminal through-hole, the stopper 31 does not impede the insertion of the plug terminal 5 into the first terminal through-hole 21, ensuring the smoothness of the insertion of the plug terminal 5 into the first terminal through-hole 21.

[0040] S500. Push the pre-installed buckle 3 towards the end facing the first terminal through-hole 21 until the elastic buckle 32 snaps into the assembly slot 25, the stopper 31 slides from the side slot 23 into the first terminal through-hole 21, and the plug terminal 5 is restricted within the first terminal through-hole 21 by the limiting portion 51. Understandably, the user uses a tool such as a screwdriver to push the pre-installed buckle 3 towards the end facing the first terminal through-hole 21. The base 33 slides within the guide slot 22, and the elastic buckle 32 snaps into the assembly slot 25 after passing over the pre-installation slot 24. A portion of the stopper 31 slides into the first terminal through-hole 21. During the movement of the plug terminal 5 within the first terminal through-hole 21, the stopper 31 abuts against the limiting portion 51, such that the stopper 31 can prevent the plug terminal 5 from moving out of the first terminal through-hole 21.

[0041] In the present invention, the pre-installed buckle 3 can be pre-installed on the plug insulating base 2, preventing the accident of the pre-installed buckle 3 falling off; and the pre-installed buckle 3 can slide from the pre-installed position to the clamping position, improving the assembly convenience of the anti-disengagement plug connector 10.

[0042] As Figure 1 and Figure 6As shown, another embodiment of the present invention further provides a connector mechanism, including a socket connector 20 and the above-mentioned anti-withdrawal plug connector 10; the socket connector 20 includes a socket housing 201, socket terminals 202, and a socket insulating base 203 provided with a second terminal through-hole 2031. The socket terminals 202 are installed in the second internal space 2011 of the socket housing 201, and the socket terminals 202 are installed in the second terminal through-hole 2031. When the socket housing 201 is installed on the plug housing 1, the socket terminals 202 are connected to the plug terminals 5. It can be understood that the plug housing 1 can be installed on the socket housing 201 by using fasteners such as screws and bolts. A part of the plug insulating base 2 can be inserted into the second terminal through-hole 2031, so that the plug terminals 5 are connected to the socket terminals 202, thereby realizing the electrical connection between the socket connector 20 and the anti-withdrawal plug connector 10.

[0043] In one embodiment, as Figure 7 and Figure 8 shown, a side hole 2032 communicating with the second terminal through-hole 2031 is further provided on the side wall of the socket insulating base 203, and a snap protrusion (not shown in the figure) is provided on the inner wall of the second terminal through-hole 2031; the socket connector 20 further includes a socket snap 204, and the socket snap 204 includes a socket 2041 provided with a side groove and an elastic hook 2042 connecting the inner wall of the side groove; it can be understood that the snap protrusion protrudes towards the center of the second terminal through-hole 2031, and the elastic hook 2042 and the socket 2041 are elastically connected.

[0044] The socket 2041 is inserted into the second terminal through-hole 2031 through the side hole 2032, and the elastic hook 2042 and the snap protrusion are mutually snapped. The socket 2041 is used to limit the socket terminal 202 in the second terminal through-hole 2031. Specifically, the socket snap 204 is inserted into the side hole 2032 and the second terminal through-hole 2031 from the side. The socket 2041 extends into the second terminal through-hole 2031, and the elastic hook 2042 and the snap protrusion are snapped, thus ensuring the stability of the socket snap 204 installed on the socket insulating base 203; and the socket 2041 extending into the second terminal through-hole 2031 can prevent the socket terminal 202 from moving out of the second terminal through-hole 2031, ensuring the stability of the socket terminal 202 installed in the second terminal through-hole 2031.

[0045] In one embodiment, as Figure 2As shown, terminal claws 52 are provided on the plug terminal 5, and the socket terminal 202 is inserted into the terminal claws 52. It can be understood that when the socket terminal 202 and the plug terminal 5 are docked, the socket terminal 202 is inserted into the terminal claws 52 and clamped by the terminal claws 52, thereby ensuring the stability of the docking between the socket terminal 202 and the plug terminal 5.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A plug connector with anti-disconnection feature, characterized in that, It includes a plug housing, a plug insulating seat, a pre-installed buckle, a shielding cylinder, and a plug terminal provided with a limiting portion; The plug insulating seat is provided with a first terminal through hole, a guide groove and a side groove that are all communicated with the first terminal through hole. A pre-installed card slot and an assembly card slot are provided on the side wall of the guide groove; the distance between the pre-installed card slot and the first terminal through hole is greater than the distance between the assembly card slot and the first terminal through hole; The pre-installed buckle includes a stopper, an elastic buckle and a base that are all connected to the stopper; the base is slidably inserted into the guide groove; the shielding cylinder is sleeved on the plug insulating seat, and the pre-installed buckle is located in the first inner hole of the shielding cylinder; both the plug insulating seat and the shielding cylinder are installed in the first internal space of the plug housing; The plug terminal is installed in the first terminal through hole; when the elastic buckle slides from the pre-installed card slot to the assembly card slot, the stopper slides into the first terminal through hole from the side groove, and the plug terminal is limited in the first terminal through hole through the limiting portion.

2. The anti-retreat plug connector according to claim 1, wherein The anti-withdrawal plug connector further includes a cable and a fastener, and the cable is connected to the plug terminal through the fastener; a bevel surface for avoiding the fastener is provided on the stopper.

3. The anti-disengagement plug connector according to claim 2, wherein, A plurality of outward turned edges and a plurality of inward turned edges are respectively provided at opposite ends of the shielding cylinder at intervals. The outward turned edges are abutted against the stop edge of the plug housing, and the inward turned edges are abutted against the fastener; Inner elastic pieces and outer elastic pieces are provided on the side wall of the shielding cylinder. The inner elastic pieces extend towards the first inner hole and are abutted against the plug insulating seat, and the inner elastic pieces extend in a direction away from the first inner hole and are abutted against the plug housing.

4. The anti-disengagement plug connector according to claim 1, wherein, The plug insulating seat is further provided with an annular groove surrounding the first terminal through hole, the guide groove and the side groove.

5. The anti-disconnection plug connector according to claim 1, characterized in that, The anti-withdrawal plug connector further includes a waterproof sealing ring, an end cover and a cable connecting the plug terminal. The waterproof sealing ring is installed in the first internal space and sleeved on the cable; the end cover is detachably installed on the plug housing and is used to press the waterproof sealing ring in the first internal space.

6. The anti-disengagement plug connector according to claim 5, wherein A buckle convex block is provided on the outer wall of the plug housing, and an elastic snap ring is provided on the end cover. The end cover is installed on the plug housing through the buckle convex block clamped in the elastic snap ring.

7. A plug assembly method, applied to the anti-withdrawal plug connector according to any one of claims 1 to 6, characterized in that, It includes: Insert the base into the guide groove, and the elastic buckle is clamped in the pre-installed card slot, and the stopper is located in the side groove; Sleeve the shielding cylinder on the plug insulating seat, and the pre-installed buckle is located in the first inner hole of the shielding cylinder; Install both the plug insulating seat and the shielding cylinder in the first internal space of the plug housing; After the cable is connected to the plug terminal, install the plug terminal in the first terminal through hole; Push the pre-installed buckle towards one end of the first terminal through hole until the elastic buckle is clamped in the assembly card slot, the stopper slides into the first terminal through hole from the side groove, and the plug terminal is limited in the first terminal through hole through the limiting portion.

8. A connector mechanism, characterized in that, Comprising a socket connector and an anti-withdrawal plug connector as described in any one of claims 1 to 6; the socket connector includes a socket housing, socket terminals, and a socket insulating base provided with second terminal through holes, the socket terminals being installed in a second inner space of the socket housing, and the socket terminals being installed in the second terminal through holes; When the socket housing is installed on the plug housing, the socket terminals are connected to the plug terminals.

9. The connector mechanism according to claim 8, wherein Side holes communicating with the second terminal through holes are further provided on the side wall of the socket insulating base, and snap convex portions are provided on the inner wall of the second terminal through holes; The socket connector further includes a socket snap, the socket snap including a socket holder provided with side grooves and elastic hooks connecting the inner walls of the side grooves; The socket holder is inserted into the second terminal through hole through the side hole, and the elastic hook and the snap convex portion are engaged with each other, and the socket holder is used for limiting the socket terminal in the second terminal through hole.

10. The connector mechanism according to claim 8, characterized in that, Terminal claws are provided on the plug terminals, and the socket terminals are inserted into the terminal claws.

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