Electric connector

Abstract

The invention discloses an electric connector, which relates to the technical field of connectors and comprises a board end electric connector, a wire end electric connector, a terminal component and a secondary locking component, the board end electric connector and the wire end electric connector are in plug-in fit with each other, and the terminal component and the wire end electric connector are in plug-in fit with each other. The board end electric connector is clamped and matched with the wire end electric connector in the front-back direction, the wire end electric connector is clamped and matched with the terminal component in the front-back direction to form pre-assembly, and after the wire end electric connector and the terminal component are pre-assembled, the secondary locking component is clamped and matched with the wire end electric connector in the left-right direction. And when the secondary locking part is used for positioning the terminal part, the secondary locking part is used for secondary locking assembly. The terminal component is not provided with an elastic sheet, so that the phenomenon that the elastic sheet is deformed and bent is avoided, and the influence of resistance change on signal transmission is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and particularly to an electrical connector. Background Art

[0002] As an element for electrically connecting or disconnecting transmission lines, a radio frequency coaxial connector is an electrical connector widely used in communication connections and is mainly used in communication technologies. The radio frequency coaxial connector has excellent durability and wide applicability. It reduces the influence of the external environment on the internal structure through the outer shell, and the radio frequency coaxial connector has multiple subtypes. For example, the MINI-radio frequency coaxial connector (i.e., the miniaturized radio frequency coaxial connector) is a scaled-down version of the radio frequency coaxial connector. It is small in size and lighter in weight and is used in automobiles, personal electric vehicles, and light electric vehicles, etc. Compared with the traditional radio frequency coaxial connector, the MINI-radio frequency coaxial connector can save a large amount of space, provide a higher data rate, and has a high modularity, allowing customization of input or output interfaces according to specific application requirements.

[0003] During the assembly process, the traditional assembly method of the radio frequency coaxial connector is time-consuming and laborious, resulting in the problems of cumbersome processes and huge labor cost consumption during the assembly and manufacturing of the radio frequency coaxial connector. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide an electrical connector to solve the problems of cumbersome processes and huge labor cost consumption during the assembly and manufacturing of the radio frequency coaxial connector.

[0005] According to a first aspect, embodiments of the present invention provide an electrical connector, including: A board-end electrical connector, a wire-end electrical connector that is plugged and matched with the board-end electrical connector, a terminal component that is plugged and matched with the wire-end electrical connector, and a secondary locking component; The board-end electrical connector is snap-fitted with the wire-end electrical connector in the front-rear direction. The wire-end electrical connector is snap-fitted with the terminal component in the front-rear direction and forms a pre-assembly. After the pre-assembly of the wire-end electrical connector and the terminal component is completed, the secondary locking component is snap-fitted with the wire-end electrical connector from the left-right direction. While the secondary locking component positions the terminal component, the secondary locking component will perform a secondary locking assembly; The wire-end electrical connector is provided with a terminal installation cavity penetrating in the front-back direction. The terminal installation cavity has a number of sub-terminal installation cavities. The terminal component has terminal heads equal in number to and corresponding one-to-one with the sub-terminal installation cavities. The terminal head is provided with a first clamping protrusion, which protrudes along the central axis of the terminal head and around the outer wall of the terminal head. Inside the sub-terminal installation cavity, there is a first clamping groove that is in clamping cooperation with the first clamping protrusion, and beside the first clamping groove, there is a clamping piece that is in interference cooperation with the first clamping protrusion. The clamping piece is arranged around the central axis of the sub-terminal installation cavity, and the end of the clamping piece close to the first clamping groove is bent radially inward along the central axis of the sub-terminal installation cavity; The board-end electrical connector includes a housing and a shielding cover. The housing is assembled outside the shielding cover. The wire-end electrical connector is inserted into the housing. The housing is provided with an anti-misassembly groove, and the shielding cover is provided with an anti-misassembly plate that cooperates with the anti-misassembly groove; The terminal component includes an outer conductor, an insulator, a central conductor, a coaxial cable, and a wire clip that are coaxially assembled. The front end of the outer conductor is a terminal head and the rear end of the outer conductor is an assembly clip. The central conductor is coaxially assembled on the coaxial cable. The braided layer of the coaxial cable is riveted with the wire clip and the braided layer turns outwards to cover the wire clip. The insulator is coaxially assembled on the coaxial cable and covers the outside of the central conductor. The coaxial cable assembled with the central conductor, the wire clip, and the insulator is inserted and cooperated with the outer conductor. The central conductor and the insulator extend to the terminal head. The assembly clip is used to clamp the coaxial cable, and a sixth clamping groove is formed on the assembly clip. There is a flanging on the coaxial cable that is in clamping cooperation with the sixth clamping groove.

[0006] Combined with the first aspect, in the first embodiment of the first aspect, the front end of the terminal component forms a terminal head for inserting a conductor. The front end of the terminal head is provided with a number of terminal spring arms. The terminal spring arms are arranged in an array along the central axis of the terminal head and there is a gap between adjacent terminal spring arms. The rear end of the terminal head away from the terminal spring arms is provided with a first clamping protrusion.

[0007] Combined with the first embodiment of the first aspect, in the second embodiment of the first aspect, the end of the terminal head away from the first clamping protrusion is provided with an expansion protrusion.

[0008] Combined with the second embodiment of the first aspect, in the third embodiment of the first aspect, a clamping flange is provided at the edge of the side of the first clamping groove away from the clamping piece. The clamping flange protrudes along the central axis of the sub-terminal installation cavity and around the inner wall of the sub-terminal installation cavity.

[0009] Combined with the first implementation of the first aspect, in the fourth implementation of the first aspect, the secondary locking component includes a plug board, two clamping arms arranged on both sides of the plug board, and a locking protrusion arranged at the middle position of the plug board. The two clamping arms are respectively arranged on the left and right sides of the plug board, and a second clamping protrusion is arranged on the clamping arm. An empty window is arranged on each of the left and right sides of the wire-end electrical connector. The empty window is communicated with the terminal installation cavity, that is, the terminal sub-installation cavity. A locking elastic piece equal in number to and corresponding one by one to the mutually communicated terminal sub-installation cavities is arranged on the side of the empty window close to the terminal sub-installation cavity. A second clamping groove and a third clamping groove are also arranged on the empty window. The second clamping groove and the third clamping groove are both in clamping fit with the second clamping protrusion. The second clamping groove and the third clamping groove are both arranged outside the locking elastic piece, and the locking elastic piece, the second clamping groove, and the third clamping groove are arranged on the empty window in sequence. The locking elastic piece is in contact fit with the locking protrusion, and a receiving groove for receiving the locking elastic piece is formed between the locking protrusion and the clamping arm.

[0010] Combined with the fourth implementation of the first aspect, in the fifth implementation of the first aspect, a guiding surface is arranged at the end of the locking protrusion away from the plug board.

[0011] Combined with the first aspect, in the sixth implementation of the first aspect, the board-end electrical connector further includes a conductor contact head. A shielding cover is assembled outside the conductor contact head. A first installation cavity and a second installation cavity that penetrate in the front-rear direction are respectively arranged on the shielding cover and the outer housing. The first installation cavity is for each conductor contact head to penetrate, and the second installation cavity is for the first installation cavity to penetrate. A first clamping barb is arranged on the outer housing, and a fourth clamping groove that is in clamping fit with the first clamping barb is arranged on the shielding cover.

[0012] Combined with the sixth implementation of the first aspect, in the seventh implementation of the first aspect, the board-end electrical connector further includes a shielding baffle. The shielding cover is in plug-in fit with the shielding baffle, and the shielding baffle is used for shielding and isolating each conductor contact head.

[0013] Combined with the sixth implementation of the first aspect, in the eighth implementation of the first aspect, a second clamping barb is arranged on the wire-end electrical connector, and a fifth clamping groove that is in clamping fit with the second clamping barb is arranged on the outer housing.

[0014] Combined with the eighth implementation of the first aspect, in the ninth implementation of the first aspect, a gear position protrusion is further arranged on the wire-end electrical connection, and the gear position protrusion is located beside the second clamping barb.

[0015] For the electrical connector of the present invention, through the snap - fit between the first snap - protrusion on the terminal component and the first snap - groove on the wire - end electrical connector, the pre - assembly of the terminal component and the wire - end electrical connector is completed. When assembling the terminal component and the wire - end electrical connector, first insert the terminal heads of each terminal component from the back to the front into the respective terminal sub - mounting cavities that match the terminal mounting cavity. During the insertion process, the inner wall of the terminal sub - mounting cavity will squeeze the first snap - protrusion on the rear protrusion of the terminal head until the first snap - protrusion moves to the position of the first snap - groove. At this time, the inner wall of the terminal mounting cavity no longer squeezes the first snap - protrusion, and the first snap - protrusion and the first snap - groove complete the snap - fit. The setting of the snap - piece plays a role in preventing the terminal head from retreating and limiting its position. Then, insert the secondary locking component from the left - right direction, that is, laterally, to achieve the secondary locking of the terminal component. When the secondary locking component is gradually squeezed and inserted, the second snap - protrusion on the snap - arm will be snap - fitted with the second snap - groove to form the pre - assembly of the secondary locking component. At this time, the locking protrusion will also just come into contact with the locking spring piece, and the locking spring piece is still in the released state. The snap - fit between the second snap - protrusion and the second snap - groove can sense whether the pre - assembly of the secondary locking component is completed. After that, continue to squeeze and insert the secondary locking component. The second snap - protrusion disengages from the second snap - groove and is snap - fitted with the third snap - groove until it forms the locking of the secondary locking component. During this process, the locking protrusion will gradually squeeze the locking spring piece and press the locking spring piece against the surface of the terminal head. The setting of the locking spring piece not only limits the insertion depth of the secondary locking component but also, by squeezing and contacting the terminal head, functions to secondarily lock the terminal head. The snap - fit between the second snap - protrusion and the third snap - groove can sense whether the secondary locking is completed. When disassembling the secondary locking component, due to the setting of the snap - fit structure and the locking spring piece, the snap - fit structure is not easily damaged, which is suitable for the operation of disassembling and reinstalling the locking part. The terminal component is not provided with a spring piece, so there will be no phenomenon of spring piece deformation and bending, thus avoiding the influence of resistance change on signal transmission. The setting of the anti - misassembly groove and the matching anti - misassembly plate ensures that there will be no incorrect - posture assembly during the assembly process of the shielding cover and the outer housing of the board - end electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Among them: Figure 1 shows the structural schematic diagram of the electrical connector provided by the present invention; Figure 2Shows a schematic diagram when the board - end electrical connector and the wire - end electrical connector in the electrical connector provided by the present invention are assembled; Figure 3 Shows an exploded schematic diagram of the board - end electrical connector in the electrical connector provided by the present invention; Figure 4 Shows an exploded schematic diagram when the wire - end electrical connector, the terminal component, and the secondary locking assembly in the electrical connector provided by the present invention are assembled; Figure 5 Shows a cross - sectional view of the pre - assembly process of the terminal component in the electrical connector provided by the present invention; Figure 6 Shows a cross - sectional view when the secondary locking component in the electrical connector provided by the present invention is pre - assembled; Figure 7 Shows a cross - sectional view when the secondary locking component in the electrical connector provided by the present invention is locked; Figure 8 Shows a schematic diagram of the structure at the outer housing and the shielding cover in the electrical connector provided by the present invention; Figure 9 Shows a cross - sectional view when the outer housing and the shielding cover in the electrical connector provided by the present invention are assembled; Figure 10 Shows a schematic diagram when the terminal component in the electrical connector provided by the present invention is assembled.

[0018] In the figure: 10 - board - end electrical connector; 11 - conductor contact head; 12 - shielding cover; 13 - outer housing; 14 - shielding baffle; 15 - first latching barb; 16 - fourth latching groove; 17 - anti - misassembly groove; 18 - anti - misassembly plate; 19 - fifth latching groove; 20 - wire - end electrical connector; 21 - terminal installation cavity; 22 - first latching groove; 23 - latching piece; 24 - latching flange; 25 - empty window; 26 - locking spring piece; 27 - second latching groove; 28 - third latching groove; 29 - second latching barb; 30 - terminal component; 31 - terminal head; 32 - terminal spring arm; 33 - gap; 34 - first latching protrusion; 35 - insulator; 36 - central conductor; 37 - coaxial cable; 38 - wire clamp; 39 - assembly clip; 391 - sixth latching groove; 40 - secondary locking component; 41 - insertion plate; 42 - latching arm; 43 - locking protrusion; 44 - second latching protrusion. Detailed implementation manners

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present application, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" 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 components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0022] As an element for electrically connecting or disconnecting a transmission line, a radio frequency coaxial connector is an electrical connector widely used in communication connections and is mainly used in communication technologies. The radio frequency coaxial connector has excellent durability and wide applicability. It reduces the influence of the external environment on the internal structure through the outer shell, and the radio frequency coaxial connector has multiple subtypes. For example, the MINI-radio frequency coaxial connector (i.e., the miniaturized radio frequency coaxial connector) is a reduced version of the radio frequency coaxial connector. It has a small volume and lighter weight and is used in automobiles, personal electric vehicles, and light electric vehicles, etc. Compared with the traditional radio frequency coaxial connector, the MINI-radio frequency coaxial connector can save a large amount of space, provide a higher data rate, and has a high modularization ability, allowing customization of input or output interfaces according to specific application requirements.

[0023] During the assembly process, the traditional method for assembling a radio frequency coaxial connector is time-consuming and laborious, resulting in the problems of cumbersome procedures and huge labor cost consumption during the assembly and manufacturing of the radio frequency coaxial connector.

[0024] To solve the above problems, an electrical connector is provided in this specification. This electrical connector aims to provide a new type of radio frequency coaxial connector that can solve the above problems. Please refer to Figures 1 to 10 , this electrical connector includes: Board - end electrical connector 10, wire - end electrical connector 20 that is inserted and mated with the board - end electrical connector 10, terminal component 30 that is inserted and mated with the wire - end electrical connector 20, and secondary locking component 40. Among them, the board - end electrical connector 10 is snap - fitted with the wire - end electrical connector 20 in the front - to - back direction, the wire - end electrical connector 20 is snap - fitted with the terminal component 30 in the front - to - back direction and forms a pre - assembly. And after the pre - assembly of the wire - end electrical connector 20 and the terminal component 30 is completed, the secondary locking component 40 is snap - fitted with the wire - end electrical connector 20 from the left - to - right direction. While the secondary locking component 40 performs interference positioning on the terminal component 30, the secondary locking component 40 will perform secondary locking assembly.

[0025] The board - end electrical connector 10 includes a housing 13 and a shielding cover 12. The housing 13 is assembled on the outside of the shielding cover 12, and the wire - end electrical connector 20 is inserted into the housing 13. In this embodiment, an anti - misassembly groove 17 is provided on the housing 13. Correspondingly, the shielding cover 12 is also provided with an anti - misassembly plate 18 that cooperates with the anti - misassembly groove 17. Thus, through the mutual cooperation of the anti - misassembly groove 17 and the anti - misassembly plate 18, incorrect - posture assembly will not occur during the assembly process of the shielding cover 12 and the housing 13 of the board - end electrical connector 10.

[0026] Please refer to Figure 10 , the terminal component 30 includes an outer conductor, an insulator 35, a center conductor 36, a coaxial cable 37, and a wire clamp 38 that are coaxially assembled. A terminal head 31 is formed at the front end of the outer conductor, that is, the terminal component 30. The terminal head 31 is used to insert into a conductor. A plurality of terminal spring arms 32 are provided at the front end of the terminal head 31. The terminal spring arms 32 are distributed in an array along the central axis of the terminal head 31 and there is a gap 33 between adjacent terminal spring arms 32. A first snap - fitting protrusion 34 is provided at the rear end of the terminal head 31. The first snap - fitting protrusion 34 protrudes along the central axis of the terminal head 31 and around the outer wall of the terminal head 31. After the assembly of the terminal component 30 is completed, the terminal component 30 is assembled onto the wire - end electrical connector 20. The rear end of the outer conductor is an assembly clip 39. The center conductor 36 is coaxially assembled on the coaxial cable 37. The braided layer of the coaxial cable 37 is riveted with the wire clamp 38 and the braided layer turns outwards to cover the wire clamp 38. The insulator 35 is coaxially assembled on the coaxial cable 37 and covers the outside of the center conductor 36. The coaxial cable 37 assembled with the center conductor 36, the wire clamp 38, and the insulator 35 is inserted and mated with the outer conductor. The center conductor 36 and the insulator 25 extend to the terminal head 31. The assembly clip 39 is used to clamp the coaxial cable 37. The assembly clip 37 in the unassembled state is in a released state to facilitate the insertion of the coaxial cable 37. A sixth snap - fitting groove 391 is formed on the assembly clip 39, and a flanging on the coaxial cable 37 is snap - fitted with the sixth snap - fitting groove 391.

[0027] The function of the center conductor 36 is to transmit corresponding signals, such as radio frequency signals. The outer conductor serves as a reference layer for signal transmission and fixes and protects the assembled coaxial cable 37, especially the insulator 35 therein. The function of the insulator 35 is to protect the center conductor 36 and serve as a dielectric layer for signal transmission. The function of the wire clamp 38 is to fix the cable and turn the edge to achieve assembly positioning with the outer conductor, preventing the coaxial cable 37 from retracting at the outer conductor.

[0028] Please refer to Figure 4 and Figure 5 , specifically, taking this electrical connector as a four-channel, i.e., four-cavity style, as an example for illustration. For the convenience of assembly and feeding, first assemble the outer conductor, that is, the terminal component 30: crimp the center conductor 36 to the core of the coaxial cable 37, rivet the braided layer of the coaxial cable 37 with the wire clamp 38, and at the same time turn the braided layer of the coaxial cable 37 outwards to cover the wire clamp 38; put the insulator 35 on the outside of the center conductor 36 and insert the insulator 35 into the coaxial cable 37; punch the sixth card slot 391 on both sides of the assembly clip 39 of the outer conductor and bend the assembly clip to press the wire, and then make a snap-fit through the sixth card slot 391 and the turned edge formed on the coaxial cable 37.

[0029] The turned edge formed on the coaxial cable 37 can replace the function of the convex hull, making the outer conductor structure flatter, not causing sudden changes in characteristic impedance, significantly enhancing the integrity performance of the transmitted signal, meeting the requirements of higher-quality signal transmission, and at the same time, the turned edge formed on the coaxial cable 37 significantly increases the retention force of the wire clamp 38 to prevent wire shedding after riveting, meeting the reliability requirements in the more demanding on-vehicle environment.

[0030] In this embodiment, the terminal mounting cavity 21 is provided on the wire-end electrical connector 20 and runs through in the front-rear direction. For a four-channel electrical connector, it can be understood that the terminal mounting cavity 21 correspondingly has four terminal sub-mounting cavities. Correspondingly, the terminal component 30 also has four terminal heads 31, and each terminal head 31 has its corresponding terminal sub-mounting cavity. The inner part of the terminal sub-mounting cavity is provided with a first card slot 22 that is snap-fitted with the first card protrusion 34, and a card piece 23 that is interference-fitted with the first card protrusion 34 is provided beside the first card slot 22. The card piece 23 is arranged around the central axis of the terminal sub-mounting cavity, and the end of the card piece 23 close to the first card slot 22 is bent radially inwards along the central axis of the terminal sub-mounting cavity.

[0031] When assembling the terminal component 30 and the wire-end electrical connector 20, first insert the terminal heads 31 of each terminal component 30 from the rear to the front into the respective terminal sub-installation cavities that match the terminal installation cavity 21. During the insertion process, the inner wall of the terminal sub-installation cavity will squeeze the first clamping protrusion 34 protruding from the rear end of the terminal head 31 until the first clamping protrusion 34 moves to the first clamping groove 21. At this time, the inner wall of the terminal installation cavity 21 no longer squeezes the first clamping protrusion 34, and the first clamping protrusion 34 and the first clamping groove 21 complete the clamping fit, and the setting of the clamping piece 23 plays a role in preventing the terminal head 31 from retreating and limiting its position.

[0032] It should be noted that both the wire-end electrical connector 20 and the terminal head 31 can be made of materials with a certain elasticity, such as plastic materials.

[0033] Please refer to Figure 5 , an expansion protrusion is provided at one end of the terminal head 31 away from the first clamping protrusion 34. Since the terminal elastic arms 32 are distributed in an array along the central axis of the terminal head 31 and there is a gap 33 between adjacent terminal elastic arms 32, when inserting a conductor, damage to the conductor can be effectively avoided. The setting of the expansion protrusion is the same. It not only ensures that the head of the terminal head 31 has a certain structural strength to protect the conductor, but also facilitates the insertion of the conductor and effectively avoids damage to the conductor.

[0034] In this embodiment, a clamping flange 24 is provided at the edge of the side of the first clamping groove 21 away from the clamping piece 23. The clamping flange 24 protrudes along the central axis of the terminal sub-installation cavity and surrounds the inner wall of the terminal sub-installation cavity. The mutual cooperation of the clamping flange 24 and the clamping piece 23 can prevent the terminal component 30 from moving out of the position restricted by the first clamping groove 21 after the pre-assembly is completed.

[0035] Since the terminal component 30 does not have a spring piece, there will be no phenomenon of the spring piece deforming and bending, thus avoiding resistance change and also avoiding affecting signal transmission.

[0036] After that, after the terminal component 30 is inserted into the terminal installation cavity 21 of the wire-end electrical connector 20 in the front-rear direction and is clamped with the terminal sub-installation cavity to achieve the pre-assembly of the terminal component 30 and the wire-end electrical connector 20, then the secondary locking component 40 is inserted from the left-right direction, that is, laterally, to achieve the secondary locking of the terminal component 30.

[0037] Please refer to Figure 6 and Figure 7, in this embodiment, the secondary locking member 40 includes a plug board 41, two clamping arms 42 arranged on both sides of the plug board 41, and a locking protrusion 43 arranged at the middle position of the plug board. The two clamping arms 42 are respectively arranged on the left and right sides of the plug board 41. A second clamping protrusion 44 is provided on the clamping arm 42. An empty window 25 is provided on each of the left and right sides of the wire-end electrical connector 20. The empty window 25 is communicated with the terminal installation cavity 21, that is, the terminal sub-installation cavity. A locking elastic piece 26 equal in number and corresponding one by one to the mutually communicated terminal sub-installation cavities is provided on the side of the empty window 25 close to the terminal sub-installation cavity. A second clamping groove 27 and a third clamping groove 28 are also provided on the empty window 25. The second clamping groove 27 and the third clamping groove 28 are both in clamping fit with the second clamping protrusion 44. The second clamping groove 27 and the third clamping groove 28 are both arranged outside the locking elastic piece 26, and the locking elastic piece 26, the second clamping groove 27, and the third clamping groove 28 are arranged on the empty window 25 in sequence. The locking elastic piece 26 is in contact fit with the locking protrusion 43. A receiving groove for receiving the locking elastic piece 26 is formed between the locking protrusion 43 and the clamping arm 42.

[0038] It should be noted that since the wire-end electrical connector 20 is made of a material with a certain elasticity, the locking elastic piece 26 also has a certain elasticity. The locking elastic piece 26, the second clamping groove 27, and the third clamping groove 28 are arranged on the empty window 25 in sequence, that is, the second clamping groove 27 is located between the locking elastic piece 26 and the third clamping groove 28. Among these three components, the third clamping groove 28 is located on the outermost side of the empty window 25.

[0039] Please refer to Figure 4 , Figure 6 and Figure 7 . When the secondary locking member 40 is assembled, there are two methods: 1. After the pre-assembly of the terminal component 30 and the wire-end electrical connector 20 is completed, the secondary locking component 40 is inserted laterally to complete the assembly. The setting of the empty window 25 facilitates the calculation-type vision device or the assembler to observe whether each terminal head 31 has been correctly pre-assembled. Before the insertion of the secondary locking component 40, the locking elastic pieces 26 corresponding to each terminal mounting cavity are in a released state. When the secondary locking component 40 is gradually pressed and inserted, the second engaging protrusion 44 on the engaging arm 42 will engage with the second engaging groove 27 to form the pre-assembly of the secondary locking component 40. At this time, the locking protrusion 43 will also just come into contact with the locking elastic piece 26, and the locking elastic piece 26 is still in a released state. The engagement between the second engaging protrusion 44 and the second engaging groove 27 can be used to sense whether the pre-assembly of the secondary locking component 40 is completed. After that, continue to press and insert the secondary locking component 40. The second engaging protrusion 44 disengages from the second engaging groove 27 and is engaged with the third engaging groove 28. The second engaging protrusion 44 will engage with the third engaging groove 28 to form the locking of the secondary locking component 40. During this process, the locking protrusion 43 will gradually press the locking elastic piece 26 and press the locking elastic piece 26 against the surface of the terminal head 31. The setting of the locking elastic piece 26 not only limits the insertion depth of the secondary locking component 40, but also can perform the secondary locking function on the terminal head 31 by pressing and contacting the terminal head 31. The engagement between the second engaging protrusion 44 and the third engaging groove 28 can be used to sense whether the secondary locking is completed; 2. First, perform the pre-assembly of the secondary locking component 40. Since the locking elastic piece 26 is still in a released state at this time, the pre-assembly of the terminal component 30 and the wire-end electrical connector 20 can still be carried out simply and quickly. After the pre-assembly of the terminal component 30 and the wire-end electrical connector 20 is completed, then perform the locking of the secondary locking component 40, that is, press and insert the secondary locking component 40 until the second engaging protrusion 44 is engaged with the third engaging groove 28. During this process, the locking protrusion 43 will gradually press the locking elastic piece 26 and press the locking elastic piece 26 against the surface of the terminal head 31.

[0040] It should be noted that the root of the locking elastic piece 26 is connected to the empty window 25. When the secondary locking component 40 is locked on the wire-end electrical connector 20, the elastic part of the locking elastic piece 26 will abut against the terminal head 31 of the terminal component 30, realizing the secondary locking cooperation of the terminal component 30 and simultaneously playing an anti-loosening function. The setting of the locking protrusion 43 plays a limiting role on the terminal head 31. At the same time, the pressing of the locking protrusion 43 on the locking elastic piece 26 can facilitate the assembler to understand whether the locking is completed and can prevent the locking elastic piece 26 from bouncing up in the locked state, thereby ensuring the reliability of the locking.

[0041] In this embodiment, two secondary locking components 40 are provided. The two secondary locking components 40 are inserted into the empty window 25 from the left side and from the right side to the left side respectively, and are engaged with the empty window 25. The setting of multiple secondary locking components 40 ensures the reliability of the assembly.

[0042] In this embodiment, a guiding surface is provided at the end of the locking protrusion 43 away from the insertion plate 41. The guiding surface plays a guiding role when contacting the locking spring piece 26.

[0043] Finally, the assembly of the wire-end electrical connector 20 and the board-end electrical connector 10 is carried out.

[0044] In this embodiment, the board-end electrical connector 10 further includes a conductor contact head 11. The shielding cover 12 is assembled outside the conductor contact head 11. It can be understood that there are four corresponding conductor contact heads 11. The shielding cover 12 and the outer housing 13 are respectively provided with a first installation cavity and a second installation cavity that penetrate in the front-rear direction. The first installation cavity allows each conductor contact head 11 to penetrate, and the second installation cavity allows the first installation cavity to penetrate. The outer housing 13 is provided with a first latching barb 15, and the shielding cover 12 is provided with a fourth latching groove 16 that is engaged with the first latching barb 15. Through the latching cooperation of the first latching barb 15 and the fourth latching groove 16, the assembly of the shielding cover 12 and the outer housing 13 is completed. Before the assembly of the two, the conductor contact head 11 is first inserted into the corresponding first installation cavity. Specifically: press in the short ModingPIN; then press in the long ModingPIN.

[0045] In this embodiment, the board-end electrical connector 10 further includes a shielding baffle 14. The shielding cover 12 is inserted and matched with the shielding baffle 14. The shielding baffle 14 is used to shield and isolate each conductor contact head 11. To ensure the reliability of the installation, a protrusion that is engaged with the shielding cover 12 can also be provided on the shielding baffle 14, and a latching groove can be correspondingly provided on the shielding cover 12. In this way, through the latching cooperation of the protrusion and the latching groove, the shielding baffle 14 can be stably installed to play a shielding role.

[0046] The wire-end electrical connector 20 is provided with a second latching barb 29, and the outer housing 13 is provided with a fifth latching groove 19 that is engaged with the second latching barb 29. Through the latching cooperation of the second latching barb 29 and the fifth latching groove 19, the assembly of the wire-end electrical connector 20 and the board-end electrical connector 10 is completed.

[0047] In this embodiment, the wire-end electrical connector 20 is further provided with a gear protrusion. The gear protrusion is located beside the second latching barb 29. When the second latching barb 29 is engaged with the fifth latching groove 19, the gear protrusion will contact the outer wall of the outer housing 13, thereby playing a role in limiting the latching depth of the wire-end electrical connector 20.

[0048] For the electrical connector of the present invention, the pre-assembly of the terminal component 30 and the wire-end electrical connector 20 is completed through the snap-fit cooperation between the first snap projection 34 on the terminal component 30 and the first snap groove 21 on the wire-end electrical connector 20. When assembling the terminal component 30 and the wire-end electrical connector 20, first insert the terminal heads 31 of each terminal component 30 from the back to the front into the respective terminal sub-installation cavities that match the terminal installation cavity 21. During the insertion process, the inner wall of the terminal sub-installation cavity will squeeze the first snap projection 34 protruding from the rear end of the terminal head 31 until the first snap projection 34 moves to the position of the first snap groove 21. At this time, the inner wall of the terminal installation cavity 21 no longer squeezes the first snap projection 34, and the first snap projection 34 and the first snap groove 21 complete the snap-fit. The setting of the snap piece 23 plays a role in preventing the terminal head 31 from retreating and limiting its position. Then, insert the secondary locking component 40 from the left and right directions, that is, laterally, to achieve the secondary locking of the terminal component 30. When the secondary locking component 40 is gradually squeezed and inserted, the second snap projection 44 on the snap arm 42 will be snap-fitted with the second snap groove 27 to form the pre-assembly of the secondary locking component 40. At this time, the locking projection 43 will also just come into contact with the locking spring piece 26, and the locking spring piece 26 is still in the released state. The snap-fit between the second snap projection 44 and the second snap groove 27 can sense whether the pre-assembly of the secondary locking component 40 is completed. After that, continue to squeeze and insert the secondary locking component 40. The second snap projection 44 disengages from the second snap groove 27 and is finally snap-fitted with the third snap groove 28. The second snap projection 44 will be snap-fitted with the third snap groove 28 to form the locking of the secondary locking component 40. During this process, the locking projection 43 will gradually squeeze the locking spring piece 26 and press the locking spring piece 26 against the surface of the terminal head 31. The setting of the locking spring piece 26 not only plays a role in limiting the insertion depth of the secondary locking component 40, but also can perform the function of secondary locking on the terminal head 31 by squeezing and contacting the terminal head 31. The snap-fit between the second snap projection 44 and the third snap groove 28 can sense whether the secondary locking is completed. When disassembling the secondary locking component 40, due to the setting of the snap structure and the locking spring piece 26, the snap structure is not easily damaged, which is suitable for the operation of disassembling and reinstalling the locking part. The terminal component 30 is not provided with a spring piece, and there will be no phenomenon of deformation and bending of the spring piece, thus avoiding the influence of resistance change on signal transmission. The setting of the anti-misassembly groove 17 and the matching anti-misassembly plate 18 ensures that there will be no incorrect posture during the assembly of the shielding cover 12 and the outer shell 13 of the board-end electrical connector 10.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; 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.

Claims

1. An electrical connector, characterized in that, Including: A board-end electrical connector, a wire-end electrical connector that is inserted and cooperated with the board-end electrical connector, a terminal component that is inserted and cooperated with the wire-end electrical connector, and a secondary locking component; The board-end electrical connector is snap-fitted with the wire-end electrical connector in the front-rear direction. The wire-end electrical connector is snap-fitted with the terminal component in the front-rear direction and forms a pre-assembly. After the pre-assembly of the wire-end electrical connector and the terminal component is completed, the secondary locking component is snap-fitted with the wire-end electrical connector from the left-right direction. While the secondary locking component positions the terminal component, the secondary locking component will perform a secondary locking assembly; The wire-end electrical connector is provided with a terminal installation cavity that penetrates in the front-rear direction. The terminal installation cavity has a number of terminal sub-installation cavities. The terminal component has terminal heads that are equal in number to and correspond one-to-one with the terminal sub-installation cavities. The terminal head is provided with a first latching protrusion. The first latching protrusion protrudes along the central axis of the terminal head and around the outer wall of the terminal head. The inside of the terminal sub-installation cavity is provided with a first latching groove that is snap-fitted with the first latching protrusion. And beside the first latching groove, there is a latching piece that is interference-fitted with the first latching protrusion. The latching piece is arranged around the central axis of the terminal sub-installation cavity, and the end of the latching piece close to the first latching groove is bent radially inward along the central axis of the terminal sub-installation cavity; The board-end electrical connector includes a housing body and a shielding cover. The housing body is assembled on the outside of the shielding cover. The wire-end electrical connector is inserted into the housing body. The housing body is provided with an anti-misassembly groove, and the shielding cover is provided with an anti-misassembly plate that cooperates with the anti-misassembly groove; The terminal component includes an outer conductor, an insulator, a center conductor, a coaxial cable, and a wire clamp that are coaxially assembled. The front end of the outer conductor is a terminal head and the rear end of the outer conductor is an assembly clip. The center conductor is coaxially assembled on the coaxial cable. The braided layer of the coaxial cable is riveted and cooperated with the wire clamp and the braided layer turns outwards to cover the wire clamp. The insulator is coaxially assembled on the coaxial cable and covers the outside of the center conductor. The coaxial cable assembled with the center conductor, the wire clamp, and the insulator is inserted and cooperated with the outer conductor. The center conductor and the insulator extend to the terminal head. The assembly clip is used to clamp the coaxial cable. A sixth latching groove is formed on the assembly clip, and a flanging on the coaxial cable is snap-fitted with the sixth latching groove.

2. The electrical connector according to claim 1, wherein The front end of the terminal component forms a terminal head. The terminal head is used to insert into a conductor. The front end of the terminal head is provided with a number of terminal spring arms. The terminal spring arms are arranged in an array along the central axis of the terminal head and there is a gap between adjacent terminal spring arms. The rear end of the terminal head away from the terminal spring arms is provided with a first latching protrusion.

3. The electrical connector according to claim 2, wherein One end of the terminal head away from the first latching protrusion is provided with an expansion protrusion.

4. The electrical connector according to claim 1, wherein A latching flange is provided at the edge of one side of the first latching groove away from the latching piece. The latching flange protrudes along the central axis of the terminal sub-installation cavity and around the inner wall of the terminal sub-installation cavity.

5. The electrical connector according to claim 2, characterized in that, The secondary locking component includes an insertion plate, two clamping arms arranged on both sides of the insertion plate, and a locking protrusion arranged at the middle position of the insertion plate. The two clamping arms are respectively arranged on the left and right sides of the insertion plate. Second clamping protrusions are provided on the clamping arms. An empty window is provided on each of the left and right sides of the wire-end electrical connector. The empty window is communicated with the terminal installation cavity, that is, the terminal sub-installation cavity. A locking elastic piece equal in number and corresponding one by one to the mutually communicated terminal sub-installation cavities is provided on the side of the empty window close to the terminal sub-installation cavity. A second clamping groove and a third clamping groove are also provided on the empty window. Both the second clamping groove and the third clamping groove are in clamping fit with the second clamping protrusion. Both the second clamping groove and the third clamping groove are arranged outside the locking elastic piece, and the locking elastic piece, the second clamping groove, and the third clamping groove are arranged on the empty window in sequence. The locking elastic piece is in contact fit with the locking protrusion. A receiving groove for receiving the locking elastic piece is formed between the locking protrusion and the clamping arm.

6. The electrical connector according to claim 5, wherein A guiding surface is provided at the end of the locking protrusion away from the insertion plate.

7. The electrical connector according to claim 1, wherein The board-end electrical connector further includes a conductor contact head. A shielding cover is assembled outside the conductor contact head. A first installation cavity and a second installation cavity penetrating in the front-rear direction are respectively provided on the shielding cover and the housing. The first installation cavity allows each conductor contact head to penetrate. The second installation cavity allows the first installation cavity to penetrate. A first clamping barb is provided on the housing. The shielding cover is provided with a fourth clamping groove in clamping fit with the first clamping barb.

8. The electrical connector according to claim 7, wherein The board-end electrical connector further includes a shielding baffle. The shielding cover is in plug-in fit with the shielding baffle. The shielding baffle is used for shielding and isolating each conductor contact head.

9. The electrical connector according to claim 7, wherein A second clamping barb is provided on the wire-end electrical connector. The housing is provided with a fifth clamping groove in clamping fit with the second clamping barb.

10. The electrical connector according to claim 9, characterized in that, A gear position protrusion is further provided on the wire-end electrical connector. The gear position protrusion is located beside the second clamping barb.

Images