Plug connector and connector assembly

Abstract

The utility model relates to the field of electric connectors, in particular to a plug connector and a connector assembly, and aims to solve the technical problems that the existing plug connector and the existing connector assembly relate to more conductive components, are complex in assembly process and are not beneficial to batch processing and production. The plug connector includes a plug housing and a cable. The plug shell is provided with a shell inner cavity, the shell inner cavity comprises an installation cavity and an insertion cavity which are communicated with each other, the cable is fixedly installed in the installation cavity, the cable comprises a needle-shaped or sheet-shaped insertion end formed by an exposed wire core, the insertion end extends into the insertion cavity, and the plug shell is provided with an insulation fixing structure for positioning the insertion end. The insertion cavity is provided with a positioning insertion structure so as to ensure that the terminal is aligned with the insertion end in the insertion direction when the socket connector is inserted into the insertion cavity. According to the structure, an additional conductive connection structure is avoided, and the conductive structure of the plug connector is simplified, so that the processing cost of the wire conversion connector is reduced, and the wire conversion connector is more suitable for batch production.

Description

Technical Field

[0001] The utility model belongs to the field of electric connectors, and in particular relates to a plug connector and a connector assembly. Background Art

[0002] At present, integration and lightweight have become the mainstream development direction of new energy vehicles, so the wiring space of new energy vehicles is also tending to be compact. This has caused certain difficulties for the wiring of large-size cables on new energy vehicles. Since the outer diameter of large-size cables is large, they require a larger space when bent, which is not conducive to layout in the small space of the vehicle. In order to solve this problem, technicians usually use cable transfer connectors to transfer large-size cables, so that the cable input direction before the transfer is different from the cable output direction after the transfer, thereby achieving the same layout purpose as directly bending the cable.

[0003] Existing cable connectors, such as the elbow-shaped cable plug disclosed in the utility model with authorization announcement number CN206422305U, usually include a horizontal conductive cavity and a vertical cavity arranged perpendicular to each other. An inner conductor is provided on the part where the two cavities meet at the corners, and the copper terminal where the cables are connected is inserted into the inner conductor from the opening of the vertical cavity. The pin is horizontally inserted into the inner conductor from the opening of the horizontal conductive cavity and screwed onto the copper terminal so as to be fixed and conductively connected with the copper terminal. Such a structure involves many components and has a complex structure. At the same time, the pin located in the horizontal conductive cavity is not easy to be screwed, so it is troublesome to assemble and is not conducive to mass production. Utility Model Content

[0004] The purpose of the utility model is to provide a plug connector to solve the technical problems that the existing plug connectors involve more conductive components, complex assembly process, high processing cost, and are not conducive to mass production. The purpose of the utility model is to provide a connector assembly to solve the technical problems that the existing connector assembly involves more conductive components, complex assembly process, high processing cost, and is not conducive to mass production.

[0005] The utility model adopts the following technical solutions:

[0006] A plug connector comprises a plug housing and a cable, wherein the plug housing has an inner cavity, the inner cavity comprising an installation cavity and an insertion cavity which are interconnected, and the cable is fixedly installed in the installation cavity; the cable comprises a needle-shaped or sheet-shaped insertion end formed by an exposed wire core, and the insertion end extends into the insertion cavity; the plug housing has an insulating fixing structure for positioning the insertion end; the insertion cavity has a positioning insertion structure, so as to ensure that the terminal of the socket connector is aligned with the insertion end in the insertion direction when an adapted socket connector is inserted into the insertion cavity.

[0007] Furthermore, the sheet-shaped plug-in end is in the shape of a straight long strip, and its width direction is arranged along the extension direction of the plug-in cavity, so as to be plugged in or screwed with the clip-type terminal of the matching socket connector; the insulating fixing structure includes an inner surface of the mounting cavity, and the inner surface of the mounting cavity is adapted and positioned to match the outer surface of the plug-in end.

[0008] Furthermore, the plug housing comprises an outer housing and an insulating inner housing fixedly installed in the outer housing, and the installation cavity and the insulating fixing structure are arranged on the insulating inner housing.

[0009] Furthermore, the outer shell is provided with an inner shell socket, and the insulating inner shell is inserted into the outer shell through the inner shell socket; an anti-slip structure is provided between the insulating inner shell and the outer shell to prevent the insulating inner shell from slipping out of the inner shell socket; the outer shell is provided with a stopping structure for stopping the insertion end of the insulating inner shell, and the anti-slip structure cooperates with the stopping structure to fix the insulating inner shell in its insertion direction; the insulating inner shell and the outer shell are anti-rotationally matched to fix the insulating inner shell in its circumferential direction.

[0010] Furthermore, the outer shell is a curved shell and has a curved inner cavity, the curved inner cavity includes a first section and a second section that are arranged at a certain angle and connected, the insulating inner shell is inserted into the first section of the curved inner cavity, and the cavity wall of the second section of the curved inner cavity facing the first section constitutes the stopping structure to stop the insertion end of the insulating inner shell.

[0011] Furthermore, the anti-slip structure includes an elastic buckle arranged on one of the outer shell surface of the insulating inner shell and the inner shell surface of the outer shell, and a buckle groove arranged on the other; the elastic buckle is used to snap into the buckle groove and cooperate with the buckle groove stop after the insulating inner shell is inserted into place.

[0012] Furthermore, the insulating fixing structure includes a slot provided on one of the insulating inner shell and the sheet-shaped plug-in end, and a protrusion provided on the other; the slot and the protrusion are engaged with each other to position the sheet-shaped plug-in end with the insulating inner shell in its extension direction.

[0013] Furthermore, the insulating inner shell is a split buckle structure that is split along the width direction of the sheet-shaped plug-in end, and the card slot and the card protrusion are arranged on one side edge of the sheet-shaped plug-in end corresponding to its width direction and on the split of the insulating inner shell corresponding to the edge.

[0014] Furthermore, the insulating inner shell is provided with a hollow portion for allowing a terminal of a matching socket connector to extend therein and be conductively connected to the plug-in end.

[0015] Furthermore, a wire sealing structure is provided at the socket of the inner shell to achieve sealing between the cable and the installation cavity.

[0016] Beneficial effects: The utility model improves the existing plug connector. The plug connector described in the utility model specifically includes a plug housing and a cable. The plug housing has a housing inner cavity, and the housing inner cavity includes an installation cavity and a plug-in cavity that are interconnected. The cable is fixedly installed in the installation cavity. Such a setting provides a plug-in space for the plug connector and the matching socket connector, and also realizes good protection of the plug-in position of the plug connector and the matching socket connector. The cable includes a needle-shaped or sheet-shaped plug-in end formed by a bare wire core. The plug-in end extends into the plug-in cavity to be connected with the matching socket connector. The plug-in end is directly formed by the wire core of the cable, and the plug-in end is directly plugged with the terminal of the socket connector. Such a setting can avoid setting an additional conductive connection structure on the cable, thereby effectively simplifying the conductive structure of the plug connector. The plug housing has an insulating fixing structure for positioning the plug-in end, so that the plug-in end is stably maintained in the plug housing. At the same time, the plug-in cavity has a positioning plug-in structure to ensure that the terminal of the socket connector and the plug-in end are aligned in the plug-in direction when the matching socket connector is inserted into the plug-in cavity. Such a configuration enables the cable plug-in end to be quickly aligned with the terminal of the matching socket connector during plug-in, which facilitates plug-in. The above configuration and structure avoid redundant conductive structures, thereby greatly reducing the processing and assembly costs of the plug connector, and is therefore more suitable for mass production.

[0017] A connector assembly includes a plug connector and a socket connector, the plug connector includes a plug housing and a cable, the plug housing has a housing inner cavity, the housing inner cavity includes an installation cavity and an insertion cavity that are interconnected, and the cable is fixedly installed in the installation cavity; the cable includes a needle-shaped or sheet-shaped insertion end formed by an exposed wire core, and the insertion end extends into the insertion cavity; the plug housing has an insulating fixing structure for positioning the insertion end; the insertion cavity has a positioning insertion structure, so as to ensure that the terminal of the socket connector is aligned with the insertion end in the insertion direction when an adapted socket connector is inserted into the insertion cavity.

[0018] Furthermore, the sheet-shaped plug-in end is in the shape of a straight long strip, and its width direction is arranged along the extension direction of the plug-in cavity, so as to be plugged in or screwed with the clip-type terminal of the matching socket connector; the insulating fixing structure includes an inner surface of the mounting cavity, and the inner surface of the mounting cavity is adapted and positioned to match the outer surface of the plug-in end.

[0019] Furthermore, the plug housing comprises an outer housing and an insulating inner housing fixedly installed in the outer housing, and the installation cavity and the insulating fixing structure are arranged on the insulating inner housing.

[0020] Furthermore, the outer shell is provided with an inner shell socket, and the insulating inner shell is inserted into the outer shell through the inner shell socket; an anti-slip structure is provided between the insulating inner shell and the outer shell to prevent the insulating inner shell from slipping out of the inner shell socket; the outer shell is provided with a stopping structure for stopping the insertion end of the insulating inner shell, and the anti-slip structure cooperates with the stopping structure to fix the insulating inner shell in its insertion direction; the insulating inner shell and the outer shell are anti-rotationally matched to fix the insulating inner shell in its circumferential direction.

[0021] Furthermore, the outer shell is a curved shell and has a curved inner cavity, the curved inner cavity includes a first section and a second section that are arranged at a certain angle and connected, the insulating inner shell is inserted into the first section of the curved inner cavity, and the cavity wall of the second section of the curved inner cavity facing the first section constitutes the stopping structure to stop the insertion end of the insulating inner shell.

[0022] Furthermore, the anti-slip structure includes an elastic buckle arranged on one of the outer shell surface of the insulating inner shell and the inner shell surface of the outer shell, and a buckle groove arranged on the other; the elastic buckle is used to snap into the buckle groove and cooperate with the buckle groove stop after the insulating inner shell is inserted into place.

[0023] Furthermore, the insulating fixing structure includes a slot provided on one of the insulating inner shell and the sheet-shaped plug-in end, and a protrusion provided on the other; the slot and the protrusion are engaged with each other to position the sheet-shaped plug-in end with the insulating inner shell in its extension direction.

[0024] Furthermore, the insulating inner shell is a split buckle structure that is split along the width direction of the sheet-shaped plug-in end, and the card slot and the card protrusion are arranged on one side edge of the sheet-shaped plug-in end corresponding to its width direction and on the split of the insulating inner shell corresponding to the edge.

[0025] Furthermore, the insulating inner shell is provided with a hollow portion for allowing a terminal of a matching socket connector to extend therein and be conductively connected to the plug-in end.

[0026] Furthermore, a wire sealing structure is provided at the socket of the inner shell to achieve sealing between the cable and the installation cavity.

[0027] Beneficial effects: The utility model improves the existing connector assembly. The connector assembly described in the utility model includes a plug connector and a socket connector. The plug connector specifically includes a plug housing and a cable. The plug housing has a housing inner cavity, and the housing inner cavity includes an installation cavity and a plug-in cavity that are interconnected. The cable is fixedly installed in the installation cavity. Such a setting provides a plug-in space for the plug connector and the socket connector, and also realizes good protection of the plug-in place of the plug connector and the socket connector. The cable includes a needle-shaped or sheet-shaped plug-in end formed by a bare wire core. The plug-in end extends into the plug-in cavity to connect with the socket connector. The plug-in end is directly formed by the wire core of the cable, and the plug-in end is directly plugged with the terminal of the socket connector. Such a setting can avoid setting an additional conductive connection structure on the cable, thereby effectively simplifying the conductive structure of the plug connector. The plug housing has an insulating fixing structure for positioning the plug-in end, so that the plug-in end is stably maintained in the plug housing. At the same time, the plug-in cavity has a positioning plug-in structure to ensure that the terminal of the socket connector and the plug-in end are aligned in the plug-in direction when the socket connector is inserted into the plug-in cavity. Such a setting enables the cable plug-in end and the terminal of the matching socket connector to be quickly aligned when plugged in, which is convenient for plugging in. The above setting and structure avoid redundant conductive structures, thereby greatly reducing the processing and assembly costs of the plug connector, and thus it is more suitable for mass production. The connector assembly using the above plug connector also simplifies the assembly process and reduces the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an off-axis schematic diagram of an embodiment of the connector assembly of the utility model;

[0029] Figure 2 for Figure 1 An off-axis schematic diagram of the middle plug connector;

[0030] Figure 3 for Figure 2 Exploded view of;

[0031] Figure 4 for Figure 2 Bottom view of

[0032] Figure 5 for Figure 4 Schematic diagram of the section along AA;

[0033] Figure 6 for Figure 2 A schematic cross-sectional view of the middle and outer shell;

[0034] Figure 7 for Figure 2 An off-axis view of the insulating inner housing;

[0035] Figure 8for Figure 7 Bottom view of

[0036] Fig. 9 for Figure 8 Schematic diagram of the section along BB;

[0037] Fig.10 for Figure 2 Schematic diagram of the cable outside the axis;

[0038] Fig.11 It is a schematic diagram of another embodiment of the sheet-shaped plug-in end of the connector assembly of the utility model;

[0039] The names of the components corresponding to the corresponding reference numerals in the figure are: 1. plug connector; 2. socket connector; 3. plug housing; 4. cable; 5. installation cavity; 6. plug-in cavity; 7. plug-in end; 8. outer housing; 9. insulating inner housing; 10. inner housing socket; 11. first section; 12. second section; 13. elastic buckle; 14. buckle groove; 15. card groove; 16. card convex; 17. upper housing; 18. lower housing; 19. hollow; 20. sealing housing; 21. first sealing ring; 22. second sealing ring; 23. connecting flange. DETAILED DESCRIPTION

[0040] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0041] The principle of the connector assembly described in the utility model is as follows:

[0042] A connector assembly, the structure of which can refer to Figure 1 As shown, it includes a plug connector 1 and a socket connector 2. The specific structure of the plug connector 1 can be referred to Figure 2-5As shown, it specifically includes a plug housing 3 and a cable 4. The plug housing 3 has a housing inner cavity, and the housing inner cavity includes an installation cavity 5 and a plug-in cavity 6 that are interconnected. The cable 4 is fixedly installed in the installation cavity 5. Such a setting provides a plug-in space for the plug connector 1 and the matching socket connector 2, and also realizes good protection of the plug-in position of the plug connector 1 and the matching socket connector 2. The cable 4 includes a needle-shaped or sheet-shaped plug-in end 7 formed by the exposed wire core. The plug-in end 7 extends into the plug-in cavity 6 to connect with the matching socket connector 2. The plug-in end 7 is directly formed by the wire core of the cable 4, and the plug-in end 7 is directly plugged with the terminal of the socket connector 2. Such a setting can avoid setting an additional conductive connection structure on the cable 4, thereby effectively simplifying the conductive structure of the plug connector 1. It should be noted that in the present utility model, the terminal of the socket connector 2 is determined by the specific shape of the plug-in end 7 of the cable 4. When the plug-in end 7 of the cable 4 is sheet-shaped, the terminal of the socket connector 2 can preferably adopt a clip-type terminal to adapt thereto. When the plug-in end 7 of the cable 4 is needle-shaped, the terminal of the socket connector 2 can preferably adopt a cylindrical terminal to match it. In addition, only a single terminal can be set in the socket connector 2 to be plugged with the socket connector 2 described in the utility model; multiple terminals can also be connected and connected into one body to form a combined terminal to be plugged with the socket connector 2 described in the utility model. The plug housing 3 has an insulating fixing structure for positioning the plug-in end 7 so that the plug-in end 7 is stably maintained in the plug housing 3. At the same time, the plug-in cavity 6 has a positioning plug-in structure to ensure that the socket terminal and the plug-in end 7 are aligned in the plug-in direction when the socket connector 2 is inserted into the plug-in cavity 6. Such a setting enables the plug-in end 7 of the cable 4 to be quickly aligned with the terminal of the matching socket connector 2 when plugging, which is conducive to plugging. The positioning plug-in structure can specifically be the cavity wall of the plug-in cavity 6. The inner profile of the cavity wall is adapted to the outer profile of the insertion end of the socket connector 2, so as to ensure that the terminal of the socket connector 2 is aligned with the plug-in end 7 in the plug-in direction. On this basis, the positioning and plugging structure may further include a guide groove arranged on the cavity wall of the plugging cavity 6 so as to adapt and position with a guide strip arranged on the outer surface of the insertion end of the socket connector 2 .

[0043] The above configuration and structure avoid redundant conductive structures, thereby greatly reducing the processing and assembly costs of the plug connector 1, and thus being more suitable for mass production. The connector assembly using the above plug connector 1 also simplifies the assembly process and reduces the processing cost.

[0044] Based on the above-mentioned principle, the embodiment 1 of the connector assembly of the utility model is:

[0045] A connector assembly, the structure of which can refer to Figure 2-5As shown, it includes a plug connector 1 and a socket connector 2. The plug connector 1 includes a plug housing 3 and a cable 4. The plug housing 3 has a housing inner cavity, and the housing inner cavity includes an installation cavity 5 and a plug-in cavity 6 that are interconnected. The cable 4 is fixedly installed in the installation cavity 5. The cable 4 includes a needle-shaped or sheet-shaped plug-in end 7 formed by a bare wire core. The plug-in end 7 extends into the plug-in cavity 6 to be connected with the matching socket connector 2. The plug housing 3 has an insulating fixing structure for positioning the plug-in end 7 so that the plug-in end 7 is stably maintained in the plug housing 3. At the same time, the plug-in cavity 6 has a positioning plug-in structure to ensure that the socket terminal and the plug-in end 7 are aligned in the plug-in direction when the matching socket is inserted into the plug-in cavity 6. The above structure avoids redundant conductive structures, thereby greatly reducing the processing cost and assembly cost of the plug connector 11, so that the above plug connector 1 is more suitable for mass production.

[0046] The key point of this embodiment is that the sheet-shaped plug-in end 7 can refer to Fig.10 The sheet-shaped plug-in end 7 is specifically a straight long strip structure. The insulating fixing structure on the plug housing 3 includes an inner profile of the mounting cavity 5. The inner profile of the mounting cavity 5 is adapted and positioned with the outer profile of the plug-in end 7 so as to fix the sheet-shaped plug-in end 7 in the plug housing 3. Specifically, in this embodiment, reference can be made to Figure 5 As shown in , the width direction of the sheet-like plug-in end 7 is arranged along the extension direction of the plug-in cavity 6. Such an arrangement can facilitate the direct plug-in of the sheet-like plug-in end 7 with the clip-type terminal of the socket connector 2, and on the other hand, it also increases the area of ​​the conductive connection between the plug connector 1 and the socket connector 2 terminals. In addition, the sheet-like plug-in end 7 can also be arranged so that the sheet-like plug-in end 7 is directly opposite to the plug-in cavity 6, and a screw hole is provided on the sheet-like plug-in end 7 at a position facing the plug-in cavity 6. A screw-in hole for screwing a conductive fastener is provided on the plug housing 3 at a position corresponding to the screw-in hole. After the socket connector 2 is inserted into the plug-in cavity 6, the terminal of the socket connector 2 is conductively and firmly connected to the sheet-like plug-in end 7 of the plug connector 1 through the conductive fastener. In the present embodiment, the mounting cavity 5 is specifically a rectangular cavity of the same shape as the sheet-like plug-in end 7. After the sheet-shaped plug-in end 7 is installed in the installation cavity 5 , its outer surface is adapted and positioned with the inner surface of the rectangular cavity to prevent the sheet-shaped plug-in end 7 from moving or rotating in the installation cavity 5 .

[0047] It is easy to think that you can also refer to Fig.11 As shown, the sheet-shaped plug-in end 7 is bent at a sheet surface. One section of the bent structure is fixedly installed in the installation cavity 5, and the other section is exposed in the plug-in cavity 6 and extends in the same direction as the plug-in cavity 6 so as to be plugged with the clip-type terminal of the socket connector 2. Such a structure can also provide a larger plug-in area.

[0048] Based on the above-mentioned principle and embodiment 1, embodiment 2 of the connector assembly of the utility model is:

[0049] Compared with the embodiment 1, the key point of this embodiment is that the plug housing 3 includes an outer housing 8 and an insulating inner housing 9 fixedly installed in the outer housing 8, and the mounting cavity 5 and the insulating fixing structure are arranged on the insulating inner housing 9. The structure of the outer housing 8 can be referred to Figure 6 As shown, it can be made of metal material or insulating material. The structure of the insulating inner shell 9 can be referred to Figure 7-9 As shown. The sheet-shaped plug-in end 7 is positioned and matched in the mounting cavity 5 on the insulating inner shell 9 through the insulating fixing structure, and is fixedly installed in the outer shell 8 together with the insulating inner shell 9. On this basis, the plug-in cavity 6 and the positioning plug-in structure can be separately arranged on the outer shell 8 or the insulating inner shell 9, or can be composed of structures respectively arranged on the insulating inner shell 9 and the outer shell 8. In this way, the sheet-shaped plug-in end 7 can be firmly maintained in a fixed position in the plug shell 3 under the premise of achieving insulation protection for the sheet-shaped plug-in end 7, thereby preventing the sheet-shaped plug-in end 7 from floating in the plug shell 3 and affecting the mutual insertion of the plug connector 1 and the socket connector 2. It is easy to think that the plug shell 3 can also be an integrated structure made of insulating material. At this time, the mounting cavity 5, the plug-in cavity 6, the insulating fixing structure and the positioning plug-in structure are all arranged on the plug shell 3. Specifically, an interference insertion groove is provided on the plug shell 3. The inner profile of the interference insertion groove is matched with the outer profile of the sheet-shaped plug-in end 7, so that the sheet-shaped plug-in end 7 is inserted and fixed in the interference insertion groove. A cavity is provided on the plug housing 3 corresponding to the plug-in portion of the sheet-shaped plug-in end 7, so that the plug-in portion of the sheet-shaped plug-in end 7 is exposed in the cavity, so that the cavity is used as a plug-in cavity 6 for the socket connector 2 to be inserted. The inner profile of the cavity wall is matched with the outer profile of the plug-in end 7 of the socket connector 2 and positioned to ensure that the plug connector 1 and the socket connector 2 can be aligned and plugged. Such a setting can effectively reduce the processing cost of the plug housing 3.

[0050] When the plug housing 3 includes an outer housing 8 and an insulating inner housing 9, preferably, an inner housing socket 10 can be provided on the outer housing 8. The insulating inner housing 9 is inserted into the outer housing 8 through the inner housing socket 10. An anti-slip structure is provided between the insulating inner housing 9 and the outer housing 8 to prevent the insulating inner housing 9 from slipping out of the inner housing socket 10. The outer housing 8 is also provided with a stop structure for stopping the insertion end of the insulating inner housing 9, so that the insulating inner housing 9 can be fixed in its insertion direction by the cooperation of the anti-slip structure and the stop structure. The insulating inner housing 9 and the outer housing 8 are locked to fix the insulating inner housing 9 in its circumferential direction. Specifically, in this embodiment, the outer shape of the insulating inner housing 9 and the inner cavity of the outer housing 8 can both adopt a rectangular strip structure. When the insulating inner housing 9 is inserted into the outer housing 8, the outer profile of the insulating inner housing 9 and the inner profile of the outer housing 8 are mutually attached and locked to fix the insulating inner housing 9 in its circumferential direction. It is easy to think that when the outer profile of the insulating inner shell 9 and the inner profile of the outer shell 8 are relatively complex and convenient for plugging, the outer shell 8 can also be a split structure. After the insulating inner shell 9 is installed in the inner cavity of the outer shell 8, the split of the outer shell 8 can be fastened and installed as a whole by fasteners, or fastened together by fasteners, and at the same time, the inner cavity of the outer shell 8 and the insulating inner shell 9 are interference fit to achieve the fixation of the insulating inner shell 9 in the outer shell 8. Of course, the split of the outer shell 8 and the insulating inner shell 9 can also be glued together by insulating glue, and the fixing of the insulating inner shell 9 in the outer shell 8 is achieved by gluing.

[0051] The outer shell 8 can preferably adopt a curved shell structure so that it has a curved inner cavity inside. The curved inner cavity includes a first section 11 and a second section 12 arranged at a certain angle and connected. The insulating inner shell 9 is inserted into the first section 11 of the curved inner cavity, and its insertion end is matched with the cavity wall of the second section 12 facing the first section 11. Such a setting can use the cavity wall of the second section 12 of the curved inner cavity to form the stopping structure, which saves costs and facilitates the plug-in operation. The outer shell 8 adopts a curved shell structure so that the incoming direction of the cable 4 and the outgoing direction of the socket connector 2 are arranged at an angle, so that the plug connector 1 can be used in occasions with different outgoing angles. In this embodiment, the first section 11 and the second section 12 are arranged at 90 degrees. It is easy to think that the first section 11 and the second section 12 can also be arranged at a greater than 90 degree, such as 100 degrees, 120 degrees, 150 degrees, etc.; or less than 90 degrees, such as 60 degrees, 45 degrees, 30 degrees, etc. Specifically, when the first section 11 and the second section 12 are arranged at 120 degrees, the insertion end of the insulating inner housing 9 can be provided with an inclined end face adapted to the cavity wall of the second section 12 facing the first section 11, so that after the insulating inner housing 9 is inserted into place, the inclined end face can be attached to and stopped by the cavity wall of the second section 12 facing the first section 11. The second section 12 of the curved inner cavity serves as the plug-in cavity 6 for the insertion of the socket connector 2. An opening is provided on the portion of the insulating inner housing 9 facing the second section 12 so that a portion of the sheet-shaped plug-in end 7 is exposed outside the insulating inner housing 9. In order to facilitate insertion, the edge of the portion can be arranged at an angle with the edge of the main body so that the edge faces the second section 12. After the socket connector 2 is inserted, its clip-type terminal can be fully inserted to the bottom directly in a direction perpendicular to the edge. It should be noted that the angle between the first section 11 and the second section 12 can be specifically set according to actual needs, so it will not be listed here one by one. In addition. The first section 11 and the second section 12 can also be arranged at 180 degrees. A stop boss is provided in the insertion cavity 6 so as to stop and cooperate with the end surface of the insulating inner housing 9 after the insulating inner housing 9 is inserted into place.

[0052] The aforementioned anti-slip structure may include an elastic snap 13 provided on one of the insulating inner shell 9 and the outer shell 8, and a snap groove 14 provided on the other. Specifically, in the present embodiment, the elastic snap 13 is provided on the insulating inner shell 9, and the snap groove 14 is provided on the outer shell 8. In other embodiments, the elastic snap 13 may also be provided on the outer shell 8, and the snap groove 14 is provided on the insulating inner shell 9. After the insulating inner shell 9 is inserted into place, the elastic snap 13 is snapped into the snap groove 14 and cooperates with the snap groove 14 to stop. This assembly method is simple, efficient, and easy to process, which can effectively simplify the structure and assembly of the plug connector 1, thereby reducing its processing cost and assembly cost. It is easy to think that the anti-slip structure can also be an interference convex bulge provided on the insulating inner shell 9, and a convex pit is provided on the outer shell 8 accordingly. The insulating inner shell 9 is interference-fitted into the outer shell 8 and the interference convex bulge is snapped into the convex pit after the insulating inner shell 9 is installed in place. Alternatively, a tightening recess is provided on the insulating inner shell 9, and a tightening threaded hole is provided on the outer shell 8 at a position corresponding to the tightening recess. A tightening screw is inserted into the tightening threaded hole and pressed against the tightening recess to prevent the insulating inner shell 9 from falling off the outer shell 8.

[0053] The insulating fixing structure includes a card slot 15 provided on one of the insulating inner shell 9 and the sheet-shaped plug-in end 7, and a card protrusion 16 provided on the other. The card slot 15 and the card protrusion 16 are engaged and matched so that the sheet-shaped plug-in end 7 is positioned and matched with the insulating inner shell 9 in its extension direction. The card slot 15 and the card protrusion 16 have a simple structure, are easy to form and are also convenient for assembly, which can effectively simplify the structure and improve the assembly efficiency of the insulating inner shell 9 and the sheet-shaped plug-in end 7. It is easy to think that the insulating inner shell 9 and the sheet-shaped plug-in end 7 can also be fixed and bonded into one by insulating glue. Such a structure has a better fixing effect, but the cost is higher.

[0054] On the basis of the above structure, the insulating inner housing 9 can be a split buckle structure that is split along the width direction of the sheet-shaped plug-in end 7, and the card slot 15 and the card protrusion 16 are arranged on the edge of the sheet-shaped plug-in end 7 corresponding to its width direction, and on the split of the insulating inner housing 9 corresponding to the edge. Specifically, in this embodiment, the insulating inner housing 9 includes an upper housing 17 and a lower housing 18. The width direction of the sheet-shaped plug-in end 7 is vertically downward, and a card slot 15 is arranged on its edge facing the lower housing 18. A card protrusion 16 is arranged at the position of the lower housing 18 corresponding to the card slot 15. It is easy to think that the card slot 15 can also be arranged on the edge of the sheet-shaped plug-in end 7 facing the upper housing 17, and the card protrusion 16 is arranged at the position of the upper housing 17 corresponding to the card slot 15. Or the card protrusion 16 is arranged on the edge of the sheet-shaped plug-in end 7 facing the lower housing 18, and the card slot 15 is arranged at the position of the lower housing 18 corresponding to the card protrusion 16. Or a protrusion 16 is provided on the edge of the sheet-like plug-in end 7 facing the upper shell 17, and a slot 15 is provided at the position of the upper shell 17 corresponding to the protrusion 16. The insulating inner shell 9 is arranged in the above-mentioned split manner and connected by snapping, which is convenient for the insertion of the sheet-like plug-in end 7 and the matching of the slot 15 and the protrusion 16, and also convenient for its own assembly, thereby effectively improving the assembly efficiency of the plug connector 1 and making it convenient for mass production. It is easy to think that the insulating inner shell 9 can also be a split snap-fit ​​structure relative to the one-sided direction of the sheet-like plug-in end 7, and the two one-sided surfaces of the sheet-like plug-in end 7 each correspond to a split of the insulating inner shell, on this basis, the slot 15 is inserted into the protrusion 16 along the direction toward the one-sided surface of the sheet-like plug-in end 7.

[0055] In order to achieve better insulation protection for the plug-in end 7 without affecting the conductive connection between the plug-in end 7 of the cable 4 and the terminal of the socket connector 2, it is preferred that a hollow 19 be excavated on the insulating inner shell 9 so that the terminal of the socket connector 2 can be inserted and conductively connected with the plug-in end 7 of the cable 4. When the plug-in end 7 of the cable 4 is in the form of a sheet, the hollow 19 can be excavated on both sides of the sheet-shaped plug-in end 7 so that the side of the sheet-shaped plug-in end 7 has a space for the clip-type terminal of the socket connector 2 to extend into. The two clamping walls of the clip-type terminal extend into one side of the space respectively and are in conductive contact with the side in the space. When the plug-in end 7 of the cable 4 is in the form of a needle, the hollow 19 can be excavated on the peripheral side of the needle-shaped plug-in end 7 so that the peripheral side of the needle-shaped plug-in end 7 has a space for the cylindrical terminal of the socket connector 2 to extend into. The barrel wall of the cylindrical terminal extends into the space and its inner barrel wall is in conductive contact with the needle-shaped plug-in end 7. In this way, the insulating inner shell 9 can cover a larger range of the sheet-shaped plug-in end 7 by hollowing out 19, so that the insulating inner shell 9 can provide more stable and prominent insulation protection and retention functions for the sheet-shaped plug-in end 7. At this time, the positioning plug-in structure can be specifically the cavity wall of the plug-in cavity 6. The inner profile of the cavity wall is adapted to the outer profile of the insertion end of the socket connector 2, so as to ensure that the terminal of the socket connector 2 is aligned with the plug-in end 7 in the plug-in direction. The cavity wall of the plug-in cavity 6 is provided with a guide groove to adapt and position with the guide strip provided on the outer profile of the insertion end of the socket connector 2. It is easy to think that the outer shell 8 can be made of insulating material to meet the insulation protection needs. On this basis, the insulating inner shell 9 only covers the portion of the sheet-shaped plug-in end 7 corresponding to the installation cavity 5, and the end portion thereof is exposed in the inner cavity of the outer shell 8 for the insertion of the socket connector 2 so as to be plugged with the clip-type terminal of the socket connector 2. At this time, the inner cavity of the outer shell 8 for inserting the socket connector 2 is the insertion cavity 6. Such a setting can reduce the processing cost of the insulating inner shell and is suitable for low-cost occasions.

[0056] When the plug-in end 7 of the cable 4 is needle-shaped, a protrusion can be provided on the part of the needle-shaped plug-in end 7 installed in the installation cavity 5. On this basis, the plug housing 3 can be a single-layer housing made of insulating material, which is assembled and formed by separate parts, and the installation cavity 5 and the plug-in cavity 6 are provided inside. The inner surface of the installation cavity 5 is adapted to the outer surface of the needle-shaped plug-in end 7, and includes a groove provided thereon corresponding to the aforementioned protrusion. The needle-shaped plug-in end 7 is installed in the installation cavity 5, and the protrusion and the groove are engaged to prevent the needle-shaped plug-in end 7 from escaping from the plug housing 3 or rotating relative to the plug housing 3. The single-layer housing is assembled and formed after the needle-shaped plug-in end 7 is installed in the installation cavity 5. After the needle-shaped plug-in end 7 is installed, its end portion is exposed in the plug-in cavity 6 so as to be plugged with the terminal of the socket connector 2. Of course, the plug housing 3 adapted to the needle-shaped plug-in end 7 can also include an outer housing 8 and an insulating inner housing 9. The insulating inner housing 9 is provided in a separate body and is provided with a mounting cavity 5. The inner profile of the mounting cavity 5 is adapted to the outer profile of the needle-shaped plug-in end 7, and includes a groove provided thereon corresponding to the aforementioned protrusion. The plug pin is inserted into the mounting cavity 5, and the protrusion and the groove are engaged with each other so that the needle-shaped plug-in end 7 is fixed in the insulating inner housing 9. The insulating inner housing 9 is assembled and formed after the needle-shaped plug-in end 7 is inserted into the mounting cavity 5, and is fixedly installed in the outer housing 8 together with the needle-shaped plug-in end 7.

[0057] When the outer shell 8 adopts a curved shell structure, the needle-shaped plug-in end 7 can be made to be a bent needle structure corresponding to the curved shell structure. The bent needle structure includes a mounting section installed in the mounting cavity 5 and a tail section exposed in the plug-in cavity 6. The mounting section and the tail section are arranged at an angle corresponding to the first section 11 and the second section 12 of the curved shell structure. A protrusion is provided on the mounting section. The insulating inner shell 9 is provided in a separate body and a mounting cavity 5 is provided thereon. The inner profile of the mounting cavity 5 is adapted to the outer profile of the aforementioned mounting section, and includes a groove provided thereon corresponding to the aforementioned protrusion. The plug-in pin is installed in the mounting cavity 5, and the protrusion is engaged with the groove to fix the mounting section in the insulating inner shell 9. The insulating inner shell 9 is assembled and formed after the needle-shaped plug-in end 7 is installed in the mounting cavity 5, and is fixedly installed in the outer shell 8 together with the needle-shaped plug-in end 7. On this basis, the outer shell 8 can also be composed of separate bodies, and assembled and formed after the insulating inner shell 9 is installed therein. Of course, the outer shell 8 may also be provided with an inner shell socket 10, and the insulating inner shell 9 and the needle-shaped plug-in end 7 are assembled and inserted into the outer shell 8 from the inner shell socket 10. The end of the tail end is always not higher than the insulating inner shell 9 in the radial direction of the insulating inner shell 9 to prevent the tail end from hindering the insertion. The fixing between the insulating inner shell 9 and the outer shell 8 can refer to the fixing scheme between the insulating inner shell 9 and the outer shell 8 described in the above part about the sheet-shaped plug-in end 7.

[0058] In addition, a sealing structure can also be provided at the inner shell socket 10 of the outer shell 8 to achieve sealing between the cable 4 and the plug shell 3. In this embodiment, the sealing structure specifically includes a sealing shell 20 and a first sealing ring 21. The sealing shell 20 is fixedly buckled at the inner shell socket 10 of the outer shell 8 so as to compress and seal the first sealing ring 21 on the inner shell socket 10. In this way, foreign matter can be prevented from entering the plug shell 3 through the gap between the inner shell socket 10 and the cable 4, effectively ensuring the cleanliness of the plug connector 1, and also preventing the structure in the plug connector 1 from being disturbed by foreign matter. It is easy to think that the sealing between the cable 4 and the plug shell 3 can also be achieved by filling with insulating glue. On the basis of the above, a sealing ring can also be provided at the part where the plug connector 1 is connected to the socket connector 2. Specifically, in this embodiment, a connecting flange 23 is provided around the plug interface of the plug shell 3 so that the plug connector 1 and the socket connector 2 can be fixedly connected into one by fasteners after being plugged in. A second sealing ring 22 is provided on the end surface of the connecting flange 23 facing the socket connector 2 , so as to achieve sealing at the connection between the socket connector 2 and the plug connector 1 .

[0059] Other parts not mentioned in this embodiment are consistent with those in Embodiment 1.

[0060] Embodiments of the plug connector of the utility model:

[0061] The embodiment of the plug connector described in the present invention is consistent with the plug connector 1 described in the embodiment of the aforementioned connector assembly, and thus will not be described in detail here.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plug connector, comprising a plug housing (3) and a cable (4), characterized in that: The plug housing (3) has a housing inner cavity, the housing inner cavity comprising an installation cavity (5) and an insertion cavity (6) which are interconnected, the cable (4) being fixedly installed in the installation cavity (5); the cable (4) comprising a needle-shaped or sheet-shaped insertion end (7) formed by a bare wire core, the insertion end (7) extending into the insertion cavity (6); the plug housing (3) having an insulating fixing structure for positioning the insertion end (7); the insertion cavity (6) having a positioning insertion structure for ensuring that the terminal of the socket connector (2) is aligned with the insertion end (7) in the insertion direction when the matching socket connector (2) is inserted into the insertion cavity (6).

2. The plug connector according to claim 1, characterized in that: The sheet-shaped plug-in end (7) is in the shape of a straight long strip, and its width direction is arranged along the extension direction of the plug-in cavity (6), so as to be plugged or screwed with the clip-type terminal of the matching socket connector (2); the insulating fixing structure comprises an inner profile of the mounting cavity (5), and the inner profile of the mounting cavity (5) is matched and positioned with the outer profile of the plug-in end (7).

3. The plug connector according to claim 2, characterized in that: The plug housing (3) comprises an outer housing (8) and an insulating inner housing (9) fixedly mounted in the outer housing (8); the mounting cavity (5) and the insulating fixing structure are arranged on the insulating inner housing (9).

4. The plug connector according to claim 3, characterized in that: The outer shell (8) is provided with an inner shell socket (10), and the insulating inner shell (9) is inserted into the outer shell (8) through the inner shell socket (10); an anti-dropout structure is provided between the insulating inner shell (9) and the outer shell (8) to prevent the insulating inner shell (9) from falling out of the inner shell socket (10); the outer shell (8) is provided with a stopper structure for stopping the insertion end of the insulating inner shell (9), and the anti-dropout structure cooperates with the stopper structure to achieve fixation of the insulating inner shell (9) in its insertion direction; the insulating inner shell (9) and the outer shell (8) are anti-rotationally matched to achieve fixation of the insulating inner shell (9) in its circumferential direction.

5. The plug connector according to claim 4, characterized in that: The outer shell (8) is a curved shell and has a curved inner cavity, the curved inner cavity comprising a first section (11) and a second section (12) arranged at a certain angle and connected to each other, the insulating inner shell (9) is inserted into the first section (11) of the curved inner cavity, and the cavity wall of the second section (12) of the curved inner cavity facing the first section (11) forms the stopping structure so as to stop the insertion end of the insulating inner shell (9).

6. The plug connector according to claim 4, characterized in that: The anti-drop structure comprises an elastic buckle (13) provided on one of the outer shell surface of the insulating inner shell (9) and the inner shell surface of the outer shell (8), and a buckle groove (14) provided on the other; the elastic buckle (13) is used to snap into the buckle groove (14) and cooperate with the buckle groove (14) to stop after the insulating inner shell (9) is inserted into place.

7. The plug connector according to any one of claims 3 to 6, characterized in that: The insulating fixing structure comprises a slot (15) provided on one of the insulating inner housing (9) and the sheet-shaped plug-in end (7), and a latching protrusion (16) provided on the other; the slot (15) and the latching protrusion (16) are engaged with each other so that the sheet-shaped plug-in end (7) is positioned and engaged with the insulating inner housing (9) in its extending direction.

8. The plug connector according to claim 7, characterized in that: The insulating inner housing (9) is a split buckle structure that is split along the width direction of the sheet-shaped plug-in end (7), and the locking groove (15) and the locking protrusion (16) are arranged on a side edge of the sheet-shaped plug-in end (7) corresponding to the width direction thereof and on the split of the insulating inner housing (9) corresponding to the edge.

9. The plug connector according to any one of claims 3 to 6, characterized in that: The insulating inner shell (9) is provided with a hollow portion (19) for allowing a terminal of a matching socket connector (2) to extend therein and be conductively connected to the plug-in end (7).

10. The plug connector according to any one of claims 4 to 6, characterized in that: A wire sealing structure is provided at the inner shell body socket (10) to achieve sealing between the cable (4) and the installation cavity (5).

11. A connector assembly, comprising a plug connector (1) and a socket connector (2), characterized in that: The plug connector (1) is the plug connector (1) according to any one of claims 1 to 10.

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