Connector and processing method thereof

Abstract

The invention discloses a connector and a processing method thereof. The connector comprises a terminal module and an insulating shell formed on the outer side of the terminal module in an injection molding mode. The terminal module comprises a first terminal and an insulating body which is formed on the outer side of the first terminal through injection molding; one side surface of the insulating body is provided with at least one forming positioning groove; wherein one side of the insulating shell is provided with a butt joint cavity, and the other side is provided with an accommodating cavity; one end of the first terminal is located in the butt joint cavity, and the other end of the first terminal penetrates out of the accommodating cavity; the forming positioning groove is located in the butt joint cavity and communicates with the butt joint cavity. One side surface, deviating from the molding positioning groove, of the insulating body is at least partially exposed in the accommodating cavity to form an exposed area. The insulating body is fixed in an injection mold by arranging the molding positioning groove and the exposed area, and components for clamping the insulating body can be respectively pulled out from the butt joint cavity and the accommodating cavity, so that no open hole is left on the outer surface of the insulating shell, the wrapping integrity of the terminal module is improved, and the waterproof performance and the structural strength of the connector are improved.

Description

[Technical field]

[0001] The present invention relates to the technical field of connectors, and in particular to a connector capable of improving the integrity of secondary injection molding and a processing method thereof. [Background technology]

[0002] A connector generally refers to an electrical connector that is used to connect two active devices to transmit current or signals. The connector is often manufactured using a double injection molding process, which means that the terminal group is combined with the insulating material through a single injection molding process, and the insulating material is cooled and solidified into an insulating body that is coated on the outside of the terminal group to form a terminal module. The terminal module is then molded into an insulating shell on the outside of the terminal module through a secondary injection molding process to obtain a connector.

[0003] During secondary injection molding, the terminal module will be clamped and fixed by the mold insert to prevent it from moving. After the injection molding is completed, the mold insert will be pulled out. The withdrawal of the mold insert will leave openings on the outer surface of the insulating shell of the secondary injection molding. The openings will cause the insulation shell to reduce the integrity of the terminal module. The reduction in the integrity of the package will lead to a decrease in the waterproof performance, and will also affect the structural strength of the connector. [Summary of the invention]

[0004] In view of the problems faced by the background technology, the purpose of the present invention is to provide a connector and a processing method thereof, which can solve the problem of poor wrapping integrity of the terminal module by the secondary injection molding insulating shell by avoiding leaving openings on the outer surface of the insulating shell when the mold insert of the terminal module is pulled out.

[0005] To achieve the above purpose, the present invention adopts the following technical means:

[0006] A connector, characterized by comprising:

[0007] A terminal module, the terminal module comprising a plurality of first terminals and an insulating body injection-molded outside the first terminals; at least one molding positioning groove is formed on one side surface of the insulating body; and

[0008] An insulating shell, the insulating shell is injection molded on the outside of the terminal module to cover the terminal module to form a whole;

[0009] Among them, a docking cavity is provided on one side of the insulating shell, and a accommodating cavity is provided on the other side, and the docking cavity and the accommodating cavity are both connected to the outside; one end of each of the first terminals is located in the docking cavity, and the other end of each of the first terminals passes through the accommodating cavity; the molding positioning groove is located in the docking cavity and is connected to the docking cavity; a side surface of the insulating body facing away from the molding positioning groove is at least partially exposed in the accommodating cavity to form an exposed area, and the exposed area and the molding positioning groove are used to cooperate with the injection mold to position the terminal module when injecting the insulating shell.

[0010] In one embodiment, the accommodating cavity includes a first accommodating area located in the middle and a second accommodating area located at the edge; the first accommodating area and the second accommodating area are recessed from the same side of the insulating shell toward the inside of the insulating shell, the recess depth of the second accommodating area is greater than the recess depth of the first accommodating area, one end of the first terminal passes through the first accommodating area, and the exposed area is correspondingly exposed in the second accommodating area.

[0011] In one embodiment, the second accommodating area includes a supporting section and two retaining sections connecting the two ends of the supporting section; the supporting section is in the shape of a strip-shaped groove, and the exposed area is correspondingly exposed in the supporting section, and each retaining section extends from one end of the supporting section toward the direction close to the docking cavity, so that the second accommodating area is arranged in a U-shaped structure.

[0012] In one of the embodiments, at least two retaining blocks are protruding from a side surface of the insulating body away from the molding positioning groove; the retaining blocks are arranged at intervals on a side surface of the insulating body away from the molding positioning groove, and a side surface of each retaining block facing away from the molding positioning groove forms the exposed area and is exposed in the accommodating cavity, and the insulating shell fills the gap between two adjacent retaining blocks during injection molding.

[0013] In one embodiment, a mounting plate is provided on the insulating housing, and the docking cavity and the accommodating cavity are respectively arranged on two sides of the mounting plate; a waterproof member is provided on the mounting plate, and the waterproof member extends around the outer edge of the mounting plate;

[0014] The accommodating cavity is filled with a sealing material, and one end of the first terminal passes through the sealing material.

[0015] In one embodiment, the connector further includes at least two second terminals spaced apart along an arrangement direction; the first terminal is used to transmit signals, the second terminal is used to transmit current, and each of the second terminals is injection-molded and coated by the insulating housing together with the terminal module;

[0016] The insulating housing is provided with a filling cavity, and the filling cavity and the accommodating cavity are located on the same side of the insulating housing; the second terminal includes a conductive portion and a mounting foot; the insulating housing is injection molded on the outside of the conductive portion, one end of the mounting foot is connected to the conductive portion, and the other end of the mounting foot passes through the filling cavity;

[0017] Among them, a first stop hole and a second stop hole are provided at one end of the conductive part away from the mounting foot; the first stop hole and the second stop hole are arranged on the conductive part at intervals along the arrangement direction, the first stop hole is a round hole, and the aperture size of the second stop hole in the arrangement direction is larger than the aperture size perpendicular to the arrangement direction.

[0018] In one embodiment, the connector has a first direction and a second direction intersecting each other; the docking cavity is recessed into the insulating housing along the first direction, and the molded positioning groove is recessed into the insulating body along the first direction;

[0019] The insulating body includes a first insulating block and a second insulating block; the plurality of first terminals are divided into two groups; the first insulating block is injection molded on the outside of one group of the first terminals, and the second insulating block is injection molded on the outside of the other group of the first terminals, and the first insulating block and the second insulating block are spliced ​​along the second direction; each of the first terminals includes a contact portion and a welding portion, the contact portions of the two groups of the first terminals are arranged in the docking cavity along the first direction, and the welding portions of the two groups of the first terminals pass through the accommodating cavity along the second direction.

[0020] In one embodiment, the connector further has a third direction, and the first direction, the second direction and the third direction intersect each other;

[0021] One of the first insulating block and the second insulating block is provided with a first limiting column, and the other is provided with a first limiting hole; the first limiting column is correspondingly inserted into the first limiting hole along the second direction, and the first limiting hole is a circular hole; a plurality of convex ridges are provided on the outer curved surface of the first limiting column, and the plurality of convex ridges are arranged at intervals around the first limiting column, and each of the convex ridges abuts against the inner wall of the first limiting hole;

[0022] One of the first insulating block and the second insulating block is provided with a second limiting column, and the other is provided with a second limiting hole; the second limiting column is arranged on one side of the first limiting column in the third direction, and the second limiting column is correspondingly inserted into the second limiting hole along the second direction, and the aperture size of the second limiting hole in the first direction is smaller than the aperture size of the second limiting hole in the third direction; a pair of convex ribs are provided on the second limiting column, and the pair of convex ribs are relatively arranged on both sides of the second limiting column in the first direction, and the convex ribs are abutted against the inner wall of the second limiting hole in the first direction.

[0023] In one embodiment, one of the first insulating block and the second insulating block is provided with a snap-fit ​​block, and the other is provided with a snap-fit ​​groove; the snap-fit ​​block is inserted into the snap-fit ​​groove along the second direction, and the cross-sectional shape of the snap-fit ​​block perpendicular to the second direction is "T"-shaped, and the snap-fit ​​groove corresponds to the shape of the snap-fit ​​block;

[0024] The height of the snap-fit ​​block in the second direction is smaller than the depth of the snap-fit ​​groove in the second direction, and the insulating shell is partially filled into the snap-fit ​​groove during injection molding.

[0025] In one embodiment, the connector further has a third direction, and the first direction, the second direction and the third direction intersect each other;

[0026] A waterproof groove is provided on the first insulating block and / or the second insulating block; the waterproof groove is in the shape of a strip groove extending along a third direction, the first terminal is partially exposed in the waterproof groove, and the insulating shell is filled into the waterproof groove during injection molding.

[0027] A method for processing a connector, comprising:

[0028] Providing a plurality of first terminals, and injection molding an insulating body on the plurality of first terminals to fix the plurality of first terminals to obtain a terminal module;

[0029] Put the terminal module into the injection mold, insert the sliding pin into the molding positioning groove of the insulating body, press the mold insert on the side of the insulating body away from the molding positioning groove, and the sliding pin and the mold insert clamp the insulating body to fix the terminal module in the injection mold;

[0030] Providing a second terminal, placing the second terminal into the injection mold and fixing it;

[0031] Injection molding an insulating shell in the injection mold, wherein the insulating shell covers and fixes the terminal module and the second terminal;

[0032] After the insulating shell is solidified and shaped, it is separated from the injection mold. A docking cavity and a receiving cavity are formed on the insulating shell. When the injection mold is separated from the insulating shell, the docking cavity is used for separating the sliding pin from the terminal module, and the receiving cavity is used for separating the mold insert from the terminal module.

[0033] A connector is obtained.

[0034] In one embodiment, the steps of providing a plurality of first terminals, injection molding an insulating body on the plurality of first terminals to fix the plurality of first terminals, and obtaining a terminal module include:

[0035] The plurality of first terminals are divided into two groups, a first insulating block is injection-molded outside the first terminals of one group, and a second insulating block is injection-molded outside the first terminals of the other group;

[0036] The first insulating block and the second insulating block are fixed to form the insulating body by means of buckling blocks and buckling grooves.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. By setting a molding positioning groove on one side of the insulating body and forming an exposed area on the side of the insulating body away from the molding positioning groove, the molding positioning groove is connected to the docking cavity, and the exposed area is correspondingly exposed in the accommodating cavity, so that during injection molding, the sliding pin can be inserted into the molding positioning groove through the docking cavity, and the mold insert can be pressed against the exposed area through the accommodating cavity to clamp and fix the terminal module during the secondary injection molding process. After the secondary injection molding is completed, the sliding pin can be withdrawn from the docking cavity, and the mold insert can also be withdrawn from the accommodating cavity, without leaving an opening on the outer surface of the insulating shell to expose the insulating body of the first injection molding, thereby improving the integrity of the secondary injection molding insulating shell wrapping the terminal module, thereby improving the waterproof performance and structural strength of the connector.

[0039] 2. By setting the abutting section and the retaining section, the second accommodating area is ensured to be arranged in a U-shaped structure, so that the mold insert that abuts the exposed area through the accommodating cavity during the secondary injection molding is U-shaped. The U-shaped mold insert structure can greatly improve the bearing strength of the mold insert itself, thereby avoiding the mold insert from being bent and deformed during the injection molding process, and improving the stability and sustainability of the secondary injection molding process. At the same time, the position of the first accommodating area corresponds to the position of the terminal module, and the U-shaped second accommodating area is arranged outside the first accommodating area, that is, it corresponds to the outside of the terminal module. At the same time, the depth of the second accommodating area is greater than the depth of the first accommodating area, so when the sealing material is filled in the accommodating cavity, the sealing material enters the second accommodating area and the first accommodating area respectively, and the sealing material is sealed on the outside of the terminal module through the second accommodating area, and the height difference of different depths is used to improve the tightness of the sealing material and the inner wall of the accommodating cavity, thereby improving the waterproof performance of the terminal module at the accommodating cavity.

[0040] 3. By arranging abutment blocks at intervals on the side of the insulating body away from the molding positioning groove, the abutment blocks form an exposed area on the side away from the insulating body and are arranged in the abutment section, ensuring that the mold insert can position the terminal module through the abutment blocks during the secondary injection molding process, and at the same time, the insulating shell molded by the secondary injection molding will fill the gap between two adjacent abutment blocks, thereby improving the connection strength between the terminal module and the insulating shell, and improving the bearing performance of the connector. In addition, when the abutment blocks arranged at intervals are fitted with the mold insert, the problem of loose fitting caused by the entire side of the insulating body fitting with the mold insert is avoided. The intermittent fitting between the abutment blocks arranged at intervals and the mold insert can effectively improve the stability of the fitting between the mold insert and the abutment blocks, thereby improving the reliability of clamping and fixing the terminal module during the second injection molding process.

[0041] 4. The first limiting column and the second limiting column are arranged at intervals along the third direction between the first insulating block and the second insulating block. The first limiting column is inserted into the circular first limiting hole, and the first limiting column abuts against the inner wall of the first limiting hole through multiple ridges on the outer curved surface, so as to realize the relative translation positioning of the first insulating block and the second insulating block; the second limiting column is inserted into the second limiting hole, and the aperture size of the second limiting hole in the first direction is smaller than the aperture size in the third direction, and the ribs on the second limiting column abut against the inner wall of the second limiting hole in the first direction, so as to cooperate with the first limiting column to be inserted into the first limiting hole, so as to realize the relative rotation positioning of the first insulating block and the second insulating block, thereby realizing the precise positioning between the first insulating block and the second insulating block during the second injection molding. At the same time, the second positioning hole adopts a non-circular hole structure. Compared with the positioning method through the combination of two circular holes, the second limiting hole adopts a non-circular hole structure to effectively expand the aperture size, and the expansion of the aperture will not lead to a decrease in positioning accuracy. Therefore, by expanding the aperture size of the second limiting hole in the spacing arrangement direction of the first limiting column and the second limiting column, the insertion and alignment of the first limiting column and the second limiting column can be made faster and more efficient while ensuring the positioning accuracy, thereby improving the assembly efficiency of the first insulating block and the second insulating block.

[0042] 5. By setting a snap-fit ​​block between the first insulating block and the second insulating block. By setting the snap-fit ​​block to a "T" shape, the snap-fit ​​groove corresponds to the shape of the snap-fit ​​block for insertion of the snap-fit ​​block, and the "T"-shaped structure improves the reliability of positioning between the first insulating block and the second insulating block, thereby avoiding relative movement between the first insulating block and the second insulating block during the secondary injection molding process. And in the second direction, the depth dimension of the snap-fit ​​groove is greater than the height dimension of the snap-fit ​​block, so after the snap-fit ​​block is inserted into the snap-fit ​​groove, there is still some space in the snap-fit ​​groove for the insulating shell molded by the secondary injection to enter and fill. Therefore, by accommodating both the snap-fit ​​block and the insulating shell molded by the second injection in the snap-fit ​​groove, the insulating shell molded by the second injection is more tightly combined with the first insulating block and the second insulating block, thereby improving the comprehensive load-bearing performance of the connector.

[0043] 6. By providing a waterproof groove on the first insulating block and / or the second insulating block, the first terminal will be partially exposed in the waterproof groove, so that the insulating shell formed by the second injection molding can be filled into the waterproof groove and combined with the first terminal, so that the insulating material during the first injection molding and the second injection molding will be combined with the outer surface of the first terminal. Compared with the situation where the insulating material is combined with the outer surface of the first terminal only during the first injection molding, the insulating material is combined with the outer surface of the first terminal during both injection moldings, and multiple barrier layers can be formed on the outer surface of the first terminal. At the same time, one of the two times the insulating material is combined with the outer surface of the first terminal is tightly combined to ensure good sealing. Therefore, by providing a waterproof groove and exposing the first terminal partially in the waterproof groove, the outer surface of the first terminal is combined with the insulating material during both injection molding processes, thereby reducing the infiltration of water vapor along the outer wall of the first terminal to improve the waterproof performance of the connector.

Brief Description of the Drawings

[0044] Figure 1 It is a schematic structural diagram of a connector according to a first embodiment of the present invention;

[0045] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle circle A portion;

[0046] Figure 3 for Figure 1 A structural diagram of the connector from another perspective;

[0047] Figure 4 for Figure 3 A partial enlarged schematic diagram of the middle circle B portion;

[0048] Figure 5 for Figure 1 A schematic cross-sectional view of a connector;

[0049] Figure 6 for Figure 1 A schematic cross-sectional view of the middle connector after it is filled with sealing material;

[0050] Figure 7 for Figure 1 A schematic cross-sectional view of another position of the middle connector after the middle connector is filled with sealing material;

[0051] Figure 8 for Figure 1 Schematic diagram of the exploded structure of the connector;

[0052] Fig. 9 for Figure 8 Schematic diagram of the exploded structure of the terminal module;

[0053] Fig.10 for Figure 8 A cross-sectional view of the middle terminal module;

[0054] Fig.11 for Figure 8 A schematic diagram of a structure in which a first insulating block is combined with a group of first terminals;

[0055] Fig.12 for Figure 8 A schematic diagram of the structure in which the second insulating block is combined with another group of first terminals;

[0056] Fig.13 for Figure 8 A schematic diagram of the structure of the second terminal;

[0057] Fig.14 for Figure 1 A partial cross-sectional schematic diagram of the middle connector installed in the injection mold;

[0058] Fig.15 It is a structural schematic diagram of the combination of a first insulating block and a group of first terminals in a connector according to a second embodiment of the present invention;

[0059] Fig.16 for Fig.15 A schematic structural diagram of the second insulating block in the connector of the second embodiment combined with another group of first terminals.

[0060] Description of the accompanying drawings for the specific implementation:

[0061] 100. Connectors 10. Terminal module 11. First terminal 111. Contact Department 112. Welding Department 12. Insulation body 121. First insulation block 1211, the first limit column 12115, ridges 1212, Second Limiting Column 12125, ribs 1213, snap-fit ​​block 1214, Hook 122. Second insulation block 1221, first limiting hole 1222, second limiting hole 1223. Buckle slot 1224, Hook Block 125. Support block 15. Molding positioning groove 16. Exposed areas 20. Insulation shell 21. Docking cavity 22. Accommodation cavity 221. First Accommodation Area 222. Second Accommodation Area 2221, support section 2222, keep segment 23. Filling cavity 231. First filling area 232. Second filling area 25. Mounting plate 251. Waterproof parts 30. Second terminal 31. Conductive part 311, first stop hole 312, second stop hole 32. Install the feet 35. Terminals 40. Sealing materials 90. Injection mold 91. Sliding pin 92. Mould inserts 121a, first insulating block 122a, second insulating block 17. Waterproof groove X, first direction Y, second direction Z, third direction [Specific implementation method]

[0062] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0068] It should be noted that according to Figures 1 to 16 As shown, in the embodiment of the present invention, the X-axis direction, the Y-axis direction and the Z-axis direction intersect each other. For the convenience of explanation, the first direction is defined as the X-axis direction, the second direction is defined as the Y-axis direction, and the third direction is defined as the Z-axis direction. In this embodiment, the X-axis direction and the Y-axis direction are coplanar and relatively perpendicular to each other, and the Z-axis direction is relatively perpendicular to the common plane of the X-axis and the Y-axis. The first direction, the second direction, and the third direction are relatively perpendicular to each other.

[0069] See also Figures 1 to 14, is a connector 100 of the first embodiment of the present invention, comprising a terminal module 10 and an insulating shell 20. The terminal module 10 comprises a plurality of first terminals 11 and an insulating body 12 which is injection molded on the outside of the first terminals 11. The first terminals 11 are used to transmit signals, and the insulating body 12 is used to cover and fix the first terminals 11, and at the same time, to insulate and block the first terminals 11 to prevent the first terminals 11 from short-circuiting and failing to transmit signals normally. At least one molding positioning groove 15 is provided on one side surface of the insulating body 12, and the molding positioning groove 15 is used for inserting the sliding pin 91 in the external injection mold 90. The insulating shell 20 is injection molded on the outside of the terminal module 10 to cover the terminal module 10 to form a whole. The insulating body 12 is formed by the first injection molding, and the insulating shell 20 is formed by the second injection molding. The connector 100 is manufactured by two injection molding processes. Among them, a docking cavity 21 is provided on one side of the insulating shell 20, and a receiving cavity 22 is provided on the other side. The docking cavity 21 is used for inserting an external docking plug, and the receiving cavity 22 is used to accommodate the sealing material 40 and is also used for the first terminal 11 to pass through and electrically connect with the external circuit board, so as to realize the transmission of electrical signals. The docking cavity 21 and the receiving cavity 22 are both connected to the outside world. The connection with the outside world here refers to the state that the external docking plug is not inserted into the docking cavity 21 and the state that the receiving cavity 22 is not filled with the sealing material 40; one end of each first terminal 11 is located in the docking cavity 21, and the other end of each first terminal 11 passes through the receiving cavity 22. It can be understood that the two ends of the first terminal 11 can also be connected to other active devices to ensure that the docking cavity 21 and the receiving cavity 22 correspond to the two ends of the first terminal 11 respectively, so that the two ends of the first terminal 11 can be connected to two external active devices respectively and transmit signals. The molding positioning groove 15 is located in the docking cavity 21 and is connected to the docking cavity 21; one side of the insulating body 12 away from the molding positioning groove 15 is at least partially exposed in the accommodating cavity 22 to form an exposed area 16, and the exposed area 16 is used to abut against the mold insert 92 in the external injection mold 90, and then the sliding pin 91 and the mold insert 92 in the injection mold 90 respectively apply opposite pressures to the molding positioning groove 15 and the exposed area 16 to clamp and fix the terminal module 10; the exposed area 16 and the molding positioning groove 15 are used to cooperate with the injection mold 90 to position the terminal module 10 when injecting the insulating shell 20. After the injection molding is completed, since the sliding pin 91 can be pulled out from the docking cavity 21 and the molded part 92 can be pulled out from the accommodating cavity 22, it can be ensured that the sliding pin 91 and the molded part 92 will not leave openings on the insulating shell 20 of the second injection molding, thereby avoiding exposure of the insulating body 12, improving the integrity of the second injection molding insulating shell 20 wrapping the terminal module 10, and thus improving the waterproof performance and structural strength of the connector 100.

[0070] Furthermore, the insulating body 12 includes a first insulating block 121 and a second insulating block 122; a plurality of first terminals 11 are divided into two groups. The first terminals 11 included in each group are arranged at intervals along the third direction. In the first injection molding process, the first insulating block 121 is injection molded on the outside of one group of first terminals 11, and the second insulating block 122 is injection molded on the outside of the other group of first terminals 11. Then, the first insulating block 121 and the second insulating block 122 are assembled to obtain the terminal module 10. In this embodiment, the docking cavity 21 is recessed into the insulating housing 20 along the first direction, the molding positioning groove 15 is recessed into the insulating body 12 along the first direction, and the accommodating cavity 22 is recessed into the insulating housing 20 along the second direction. Each first terminal 11 includes a contact portion 111 and a welding portion 112; the contact portions 111 of the two groups of first terminals 11 are arranged in the docking cavity 21 along the first direction, and the welding portions 112 of the two groups of first terminals 11 pass through the accommodating cavity 22 along the second direction, so that the first terminal 11 is arranged in an L-shaped structure. It can be understood that during the second injection molding, the sliding pin 91 in the injection mold 90 can pass through the docking cavity 21 along the first direction and be inserted into the molding positioning groove 15, and the mold insert 92 in the injection mold 90 can pass through the accommodating cavity 22 along the second direction and press against the exposed area 16, so that the terminal module 10 can be fixed in the injection mold 90 by applying the opposite pressure in the first direction by the sliding pin 91 and the mold insert 92. Further, the number of the molding positioning grooves 15 is three, and the three molding positioning grooves 15 are arranged in a triangular array, and one of the first insulating block 121 and the second insulating block 122 is arranged with two molding positioning grooves 15, and the other is arranged with one molding positioning groove 15. Specifically, the first insulating block 121 is provided with two molding positioning grooves 15, and the second insulating block 122 is provided with a molding positioning groove 15. The molding positioning groove 15 on the second insulating block 122 is located between the two molding positioning grooves 15 on the first insulating block 121, so that the three molding positioning grooves 15 are staggered in the third direction. The molding positioning groove 15 is used for the sliding pin 91 to be inserted. In addition to having the function of pressing the insulating body 12 on the mold insert 92 to clamp and fix it in the injection mold 90, it also has the function of limiting the position between the first insulating block 121 and the second insulating block 122 to prevent To prevent the first insulating block 121 from separating from the second insulating block 122, the three forming positioning grooves 15 are arranged in a triangular array and the three forming positioning grooves 15 are staggered in the third direction, so as to increase the force application area for preventing the first insulating block 121 from separating from the second insulating block 122, thereby ensuring the stability of the splicing between the first insulating block 121 and the second insulating block 122. At the same time, compared with the structural method of placing the forming positioning grooves 15 opposite to each other on the first insulating block 121 and the second insulating block 122, this embodiment can effectively reduce the number of the forming positioning grooves 15 and the sliding pins 91, thereby reducing the processing cost.It is understandable that the number of the forming positioning grooves 15 can be greater than three. The specific number of the forming positioning grooves is not limited here. It is sufficient to ensure that the forming positioning grooves 15 are arranged at intervals along the third direction and are alternately arranged on the first insulating block 121 and the second insulating block 122 in sequence.

[0071] In another embodiment, the first terminal 11 may also be arranged in a straight strip structure, that is, the contact portion 111 and the welding portion 112 are both arranged along the same extension direction, and the docking cavity 21 and the accommodating cavity 22 are relatively arranged on both sides of the insulating shell 20 in the extension direction of the first terminal 11. At this time, the exposed area 16 on the insulating body 12 is also correspondingly provided with a molding positioning groove 15, that is, the molding positioning groove 15 is relatively arranged on both sides of the insulating body 12 in the extension direction of the first terminal 11, and the molding positioning grooves 15 on both sides are respectively exposed in the docking cavity 21 and the accommodating cavity 22. During the second injection molding, the sliding pins 91 in the injection mold 90 are correspondingly inserted into the molding positioning grooves 15 on both sides of the insulating body 12. At this time, both sides of the insulating body 12 are clamped and fixed by the sliding pins 91. In summary, the present invention does not limit the specific shape of the terminal and the fixing combination method in the second injection molding. The user can choose the terminal shape and arrangement direction according to actual needs. The L-shaped terminal can be fixed in the second injection molding by means of a sliding pin 91 and a mold insert 92. The straight strip terminal is fixed in the second injection molding by arranging sliding pins 91 on both sides. After the second injection molding is completed, the sliding pins 91 or the mold insert 92 used for fixing are correspondingly withdrawn from the docking cavity 21 or the accommodating cavity 22 to ensure the integrity of the insulating shell 20 wrapping the terminal module 10.

[0072] For further information, see Figures 8 to 12, the first insulating block 121 and the second insulating block 122 are assembled along the second direction. One of the first insulating block 121 and the second insulating block 122 is provided with a first limiting column 1211, and the other is provided with a first limiting hole 1221. The first limiting column 1211 is columnar and extends along the second direction. The first limiting column 1211 and the first limiting hole 1221 are provided at corresponding positions, and the first limiting column 1211 is correspondingly inserted into the first limiting hole 1221 along the second direction. In addition, one of the first insulating block 121 and the second insulating block 122 is provided with a second limiting column 1212, and the other is provided with a second limiting hole 1222; the second limiting column 1212 is arranged on one side of the first limiting column 1211 in the third direction, and the second limiting column 1212 is columnar and extends along the second direction. The second limiting column 1212 corresponds to the setting position of the second limiting hole 1222, and the second limiting column 1212 is inserted into the second limiting hole 1222 along the second direction. The first insulating block 121 and the second insulating block 122 are relatively positioned by inserting the first limiting column 1211 into the first limiting hole 1221 and the second limiting column 1212 into the second limiting hole 1222. In this embodiment, the first limiting hole 1221 is a circular hole; a plurality of ridges 12115 are provided on the outer curved surface of the first limiting column 1211, and the plurality of ridges 12115 are arranged at intervals around the first limiting column 1211, and each ridge 12115 abuts against the inner wall of the first limiting hole 1221. By at least three ridges 12115 abutting against the inner wall of the circular first limiting hole 1221, the relative translation of the first insulating block 121 and the second insulating block 122 is limited. The aperture size of the second limiting hole 1222 in the first direction is smaller than the aperture size of the second limiting hole 1222 in the third direction; a pair of convex ribs 12125 are provided on the second limiting column 1212, and the pair of convex ribs 12125 are relatively arranged on both sides of the second limiting column 1212 in the first direction, and the convex ribs 12125 abut against the inner wall of the second limiting hole 1222 in the first direction, and the second limiting column 1212 is limited in the second limiting hole 1222 along the first direction through the convex ribs 12125, and the first limiting column 1211 is inserted into the first limiting hole 1221 to limit the relative rotation of the first insulating block 121 and the second insulating block 122, thereby realizing precise positioning between the first insulating block 121 and the second insulating block 122 during the second injection molding.And because the second limiting hole 1222 adopts a non-circular structure, the second limiting hole 1222 and the second limiting column 1212 are roughly positioned, and the first limiting hole 1221 adopts a circular structure, so the first limiting hole 1221 and the first limiting column 1211 are precisely positioned, and the combination of coarse positioning and precise positioning is adopted to realize the displacement and rotation positioning between the first insulating block 121 and the second insulating block 122, so that after the first limiting column 1211 is inserted into the first limiting hole 1221, the second limiting column 1212 can still be quickly inserted into the second limiting hole 1222, and on the basis of ensuring the positioning accuracy, the assembly efficiency between the first insulating block 121 and the second insulating block 122 is improved. It can be understood that the shape of the second limiting hole 1222 can be elliptical, bar-shaped or other irregular shapes.

[0073] Further, one of the first insulating block 121 and the second insulating block 122 is provided with a snap-fit ​​block 1213, and the other is provided with a snap-fit ​​groove 1223. The snap-fit ​​block 1213 is in the shape of an elongated strip and extends along the second direction. The snap-fit ​​block 1213 corresponds to the setting position of the snap-fit ​​groove 1223. The snap-fit ​​block 1213 is inserted into the snap-fit ​​groove 1223 along the second direction. The cross-sectional shape of the snap-fit ​​block 1213 perpendicular to the second direction is in the shape of a "T". The snap-fit ​​groove 1223 corresponds to the shape of the snap-fit ​​block 1213, so that the snap-fit ​​block 1213 is clamped in the snap-fit ​​groove 1223. By setting the snap-fit ​​block 1213 as a "T"-shaped structure, the displacement and rotation between the first insulating block 121 and the second insulating block 122 are synchronously limited, the positioning stability between the first insulating block 121 and the second insulating block 122 is improved, and relative movement between the first insulating block 121 and the second insulating block 122 is prevented during the second injection molding. In this embodiment, the height of the snap-fit ​​block 1213 in the second direction is smaller than the depth of the snap-fit ​​groove 1223 in the second direction, that is, when the snap-fit ​​block 1213 is inserted into the snap-fit ​​groove 1223 along the second direction, the snap-fit ​​groove 1223 will retain some space, so that the insulating shell 20 is partially filled into the snap-fit ​​groove 1223 during injection molding, and the insulating shell 20 and the snap-fit ​​block 1213 fill the snap-fit ​​groove 1223 together and combine with each other, thereby improving the connection reliability among the insulating shell 20, the first insulating block 121 and the second insulating block 122, and thereby improving the comprehensive load-bearing performance of the connector 100.

[0074] Furthermore, the snap-fit ​​block 1213 is arranged on one side of the insulating body 12 in the first direction, and the first limiting column 1211 and the second limiting column 1212 are arranged on one side of the insulating body 12 in the first direction away from the snap-fit ​​block 1213, so that on the common surface of the first direction and the third direction, one side of the insulating body 12 is positioned by inserting the snap-fit ​​block 1213 into the snap-fit ​​groove 1223, and the other side of the insulating body 12 is positioned by inserting the first limiting column 1211 into the first limiting hole 1221 and the second limiting column 1212 into the second limiting hole 1222, so as to ensure the positioning reliability between the first insulating block 121 and the second insulating block 122 during the second injection molding process. Furthermore, one of the first insulating block 121 and the second insulating block 122 is provided with a hook 1214, and the other is provided with a hook block 1224. The hook 1214 extends along the second direction, and the hook block 1224 is in a convex shape corresponding to the setting position of the hook 1214 . In this embodiment, the hook 1214 is arranged on the first insulating block 121, one end of the hook 1214 is connected to the first insulating block 121, and the other end of the hook 1214 extends toward the second insulating block 122 and is hooked on the side of the hook block 1224 away from the first insulating block 121. The hook 1214 is engaged with the hook block 1224 to limit the relative movement of the first insulating block 121 and the second insulating block 122 in the second direction, and then cooperates with the first limiting column 1211 to be inserted into the first limiting hole 1221, the second limiting column 1212 to be inserted into the second limiting hole 1222, and the snap-fit ​​block 1213 to be inserted into the snap-fit ​​groove 1223, so as to realize all-round positioning between the first insulating block 121 and the second insulating block 122, and ensure that the first insulating block 121 and the second insulating block 122 are relatively fixed during the second injection molding process.

[0075] For further information, see Figures 3 to 10At least two abutting blocks 125 are convexly provided on a side surface of the insulating body 12 away from the molding positioning groove 15. Each abutting block 125 is arranged at intervals on a side surface of the insulating body 12 away from the molding positioning groove 15. A bare area 16 is formed on a side of each abutting block 125 away from the molding positioning groove 15 and is correspondingly exposed in the accommodating cavity 22. The insulating housing 20 fills the gap between two adjacent abutting blocks 125 during injection molding. The abutting blocks 125 are arranged at intervals to ensure that the bare area 16 is exposed in the accommodating cavity 22, so as to be pressed by the mold insert 92 in the injection mold 90. At the same time, the insulating housing 20 will enter the gap between the abutting blocks 125 during the injection molding process, thereby improving the reliability of the combination between the insulating housing 20 and the insulating body 12 and improving the structural strength of the connector 100. In this embodiment, a side surface of the insulating body 12 away from the molded positioning groove 15 is parallel to the common surface of the second direction and the third direction, and the abutting block 125 is arranged in a long strip shape extending along the second direction, and each abutting block 125 is arranged at intervals along the third direction. It can be understood that the abutting block 125 can be arranged in a long straight strip shape extending along a certain extension direction in the common surface of the second direction and the third direction, and each abutting block 125 can be arranged at intervals perpendicular to the extension direction in the common surface of the second direction and the third direction; or, the abutting block 125 can be in a rectangular convex block shape, and each abutting block 125 is arranged in a matrix shape in the common surface of the second direction and the third direction; of course, the abutting block 125 can also be arranged as a circular, elliptical, rhombus, polygonal or other irregularly shaped convex block, and each abutting block 125 can also be in a circular array or other array form in the common surface of the second direction and the third direction. Therefore, the specific shape, extension direction and arrangement of the supporting block 125 are not specifically limited, and it is ensured that the side of the supporting block 125 away from the insulating body 12 is exposed in the accommodating cavity 22 to form an exposed area 16. At the same time, the insulating shell 20 can be filled into the gap between the supporting blocks 125 during injection molding to improve the connection strength.

[0076] For further information, see Figures 1 to 8The insulating housing 20 is formed by the second injection molding. The insulating housing 20 is wrapped around the outside of the terminal module 10. The docking cavity 21 and the accommodating cavity 22 are arranged in a groove shape on the insulating housing 20. The arrangement positions of the docking cavity 21 and the accommodating cavity 22 correspond to the arrangement positions of the contact portion 111 and the welding portion 112 of the first terminal 11. A mounting plate 25 is provided on the insulating housing 20; the mounting plate 25 is arranged in a straight plate shape on the outside of the insulating housing 20. The mounting plate 25 is used to connect with the external housing to ensure that the connector 100 is fixed on the external housing. The docking cavity 21 and the accommodating cavity 22 are arranged on both sides of the mounting plate 25 respectively to ensure that the docking cavity 21 and the accommodating cavity 22 are respectively arranged on the inside and outside sides of the external housing. Correspondingly, the docking cavity 21 is arranged outside the external housing for the external docking plug to be inserted, and the accommodating cavity 22 is arranged inside the external housing for the first terminal 11 to be electrically connected to the circuit board in the external housing. In this embodiment, a waterproof member 251 is provided on the mounting plate 25. The waterproof component 251 extends around the outer edge of the mounting plate 25. The waterproof component 251 is arranged around the outer side of the mounting plate 25. The waterproof component 251 is correspondingly arranged between the mounting plate 25 and the external casing to waterproof the joint position between the mounting plate 25 and the external casing, thereby protecting the electrical components in the external casing.

[0077] Further, the accommodating cavity 22 includes a first accommodating area 221 located in the middle and a second accommodating area 222 located at the edge, that is, the first accommodating area 221 is located in the middle of the accommodating cavity 22, and the second accommodating area 222 is located outside the first accommodating area 221 at the edge of the accommodating cavity 22. The first accommodating area 221 and the second accommodating area 222 are recessed from the same side of the insulating housing 20 toward the inside of the insulating housing 20, and the recessed depth of the second accommodating area 222 is greater than the recessed depth of the first accommodating area 221. One end of the first terminal 11 passes through the first accommodating area 221, that is, the welding portion 112 passes through the first accommodating area 221, so as to ensure that the welding portion 112 of the first terminal 11 is electrically connected to the external circuit board. The second accommodating area 222 is in the shape of a strip groove, and is used for inserting the mold insert 92 in the injection mold 90 during the second injection molding. The exposed area 16 is correspondingly exposed in the second accommodating area 222 to ensure that the mold insert 92 presses against the exposed area 16, thereby ensuring that the terminal module 10 is clamped and fixed in the injection mold 90 during the second injection molding process to prevent the high-pressure fluid during the injection molding process from distorting the terminal module 10. In this embodiment, please refer to Figure 6 and Figure 7After the second injection molding is completed, the sealing material 40 is filled in the accommodating cavity 22, and one end of the first terminal 11 passes through the sealing material 40 in the accommodating cavity 22. The sealing material 40 prevents air or water vapor from penetrating and causing oxidation or corrosion of the first terminal 11, thereby ensuring the reliability of the first terminal 11 for signal transmission; and by forming a height difference by making the recess depth of the second accommodating area 222 greater than the recess depth of the first accommodating area 221, the tightness of the sealing material 40 and the insulating housing 20 is improved, thereby improving the waterproof performance of the terminal module 10 at the accommodating cavity 22. Specifically, the sealing material 40 is a waterproof glue.

[0078] For further information, see Figures 3 to 5 , Fig.14 The second accommodating area 222 includes a supporting section 2221 and two retaining sections 2222 connecting two ends of the supporting section 2221 . The supporting section 2221 is in the shape of a strip groove, and the supporting section 2221 is arranged on the side of the insulating body 12 away from the molding positioning groove 15, and the exposed area 16 is correspondingly exposed in the supporting section 2221, that is, the side of the supporting block 125 away from the insulating body 12 is correspondingly exposed in the supporting section 2221, and the supporting section 2221 is used for the mold insert 92 to be inserted and abut against the exposed area 16, so that the mold insert 92 applies pressure to the insulating body 12; the retaining section 2222 is in the shape of a strip groove, and each retaining section 2222 extends from one end of the supporting section 2221 toward the direction close to the docking cavity 21, so that the second accommodating area 222 is arranged in a U-shaped structure, ensuring that the mold insert 92 inserted into the second accommodating area 222 is correspondingly in a U-shaped structure, thereby improving the structural rigidity of the mold insert 92, avoiding the mold insert 92 from being bent by the high-pressure fluid in the second injection molding, and improving the working stability and sustainability of the mold insert 92.

[0079] For further information, see Figures 1 to 8 , Fig.13, the connector 100 also includes at least two second terminals 30 arranged at intervals along an arrangement direction. The first terminal 11 is used to transmit signals, and the second terminal 30 is used to transmit current. Specifically, the second terminal 30 is arranged at intervals on one side of the terminal module 10 along the third direction, that is, the arrangement direction is parallel to the third direction, and each second terminal 30 is injection-molded and coated by the insulating shell 20 together with the terminal module 10. Further, the number of the second terminals 30 is three, and the three second terminals 30 are arranged in sequence along the third direction. The second terminal 30 in the middle corresponds to the negative electrode of the power supply, and the second terminals 30 on the corresponding sides are respectively the high-voltage positive electrode of the power supply and the low-voltage positive electrode of the power supply. By arranging the negative electrode of the power supply between the high-voltage positive electrode of the power supply and the low-voltage positive electrode of the power supply, it is ensured that the negative electrode of the power supply is in the middle position when the connector 100 is installed in any direction, and it is ensured that the negative electrode of the power supply can be accurately connected to the circuit, thereby reducing the possibility of the power line being connected to the two positive electrodes of the power supply at the same time, and improving the assembly accuracy during the later assembly. In this embodiment, the second terminal 30 includes a conductive portion 31 and a mounting foot 32. The conductive part 31 is plate-shaped and extends along the first direction. The conductive part 31 is used to electrically connect to an external power line. The insulating shell 20 is injection molded on the outside of the conductive part 31. The insulating shell 20 at least partially wraps the conductive part 31. The mounting foot 32 extends along the third direction. One end of the mounting foot 32 is connected to the conductive part 31. The other end of the mounting foot 32 passes through a side of the insulating shell 20 where the accommodating cavity 22 is provided. The mounting foot 32 is used to electrically connect to an external power board. It can be understood that the welding portion 112 of the first terminal 11 and the mounting foot 32 of the second terminal 30 can be electrically connected to the same circuit board, or they can be electrically connected to different circuit boards.

[0080] Furthermore, a filling cavity 23 is provided on the insulating shell 20. The filling cavity 23 and the accommodating cavity 22 are located on the same side of the insulating shell 20, and the arrangement position of the filling cavity 23 corresponds to the arrangement position of the mounting foot 32 of the second terminal 30, and the end of the mounting foot 32 away from the conductive part 31 corresponds to the filling cavity 23. In the present embodiment, the filling cavity 23 includes a first filling area 231 located in the middle and a second filling area 232 located at the edge, that is, the first filling area 231 is located in the middle position of the filling cavity 23, and the second filling area 232 is located on the outer side of the first filling area 231 corresponding to the edge position of the filling cavity 23. The first filling area 231 and the second filling area 232 are recessed from the same side of the insulating shell 20 toward the inside of the insulating shell 20, and the recessed depth of the second filling area 232 is greater than the recessed depth of the first filling area 231. One end of the mounting foot 32 passes through the first filling area 231 to ensure that the mounting foot 32 is electrically connected to the external power board. In the present embodiment, please refer to Figures 3 to 6The second filling area 232 is in the shape of a U-shaped groove, and the second filling area 232 is arranged on the outside of the mounting foot 32. The filling cavity 23 is the same as the accommodating cavity 22, and the sealing material 40 will be filled after the second injection molding is completed. One end of the mounting foot 32 passes through the sealing material 40 in the filling cavity 23, and the sealing material 40 prevents the second terminal 30 from being oxidized or corroded by air or water vapor infiltration, thereby ensuring the reliability of the second terminal 30 for current transmission; and by forming a height difference by making the depression depth of the second filling area 232 greater than the depression depth of the first filling area 231, and surrounding the second filling area 232 in a U shape on the outside of the mounting foot 32, the tightness of the sealing material 40 and the insulating housing 20 in the filling cavity 23 can be effectively improved, thereby improving the waterproof performance of the second terminal 30 at the filling cavity 23. Specifically, the sealing material 40 is a waterproof glue.

[0081] For further information, see Fig.13 The end of the conductive part 31 away from the mounting foot 32 is provided with a first stop hole 311 and a second stop hole 312. The first stop hole 311 and the second stop hole 312 are arranged on the conductive part 31 at intervals along the arrangement direction, and the first stop hole 311 and the second stop hole 312 are used for external locking screws or other locking parts to pass through, so as to fix the second terminal 30 in the injection mold 90 during the second injection molding process. In this embodiment, the first stop hole 311 and the second stop hole 312 are arranged at intervals along the third direction; the first stop hole 311 is a circular hole, and the aperture size of the second stop hole 312 in the arrangement direction is larger than the aperture size perpendicular to the arrangement direction, that is, the aperture size of the second stop hole 312 in the third direction is larger than the aperture size in the first direction, and then the second terminal 30 is roughly positioned by the second stop hole 312, and the second terminal 30 is precisely positioned in cooperation with the first stop hole 311, so as to avoid the second terminal 30 from translating or rotating during the second injection molding process, and by setting the second stop hole 312 as a non-circular hole with a certain adjustment distance, the assembly efficiency of fixing the second terminal 30 in the injection mold 90 is improved on the basis of ensuring the positioning accuracy. It can be understood that the shape of the second stop hole 312 can be an ellipse, a bar or other irregular shapes.

[0082] Furthermore, a terminal post 35 is provided on the second terminal 30. The terminal post 35 is columnar and extends along the second direction. One end of the terminal post 35 is connected and fixed to the conductive portion 31, and the other end of the terminal post 35 passes through the insulating housing 20. The terminal post 35 is used to be electrically connected to an external power line to ensure the power transmission of the second terminal 30. In this embodiment, a thread is provided on the outer wall of the terminal post 35, and the power line can be fixed to the terminal post 35 by a nut when installing the power line; the number of the terminal posts 35 is the same as the number of the second terminal 30 and is arranged one by one, and each terminal post 35 is arranged side by side on the same side of the insulating housing 20, which is convenient for the assembly operation of the power line.

[0083] The present invention also discloses a method for processing a connector 100, comprising:

[0084] S1: providing a plurality of first terminals 11, and encapsulating the first terminals 11 with an injection-molded insulating body 12 to obtain a terminal module 10;

[0085] S2: Put the terminal module 10 into the injection mold 90, insert the sliding pin 91 into the molding positioning groove 15 of the insulating body 12, press the mold insert 92 on the side of the insulating body 12 away from the molding positioning groove 15, and the sliding pin 91 and the mold insert 92 clamp the insulating body 12 to fix the terminal module 10 in the injection mold 90;

[0086] S3: providing a second terminal 30, placing the second terminal 30 into the injection mold 90 and fixing it;

[0087] S4: Injecting the insulating housing 20 in the injection mold 90 , the insulating housing 20 covers and fixes the terminal module 10 and the second terminal 30 ;

[0088] S5: After the insulating housing 20 is solidified and shaped, it is separated from the injection mold 90. A docking cavity 21 and a receiving cavity 22 are formed on the insulating housing 20. When the injection mold 90 is separated from the insulating housing 20, the docking cavity 21 is used for separating the sliding pin 91 from the terminal module 10, and the receiving cavity 22 is used for separating the mold insert 92 from the terminal module 10;

[0089] S6: The connector 100 is manufactured.

[0090] Further, step S1 includes:

[0091] S11: The plurality of first terminals 11 are divided into two groups, a first insulating block 121 is injection-molded outside the first terminals 11 of one group, and a second insulating block 122 is injection-molded outside the first terminals 11 of the other group;

[0092] S12: Fix the first insulating block 121 and the second insulating block 122 by means of the buckling block 1213 and the buckling groove 1223 to form the insulating body 12.

[0093] Furthermore, in step S4, during the process of injection molding the insulating housing 20, the insulating material fills the snap-fit ​​groove 1223. By accommodating the snap-fit ​​block 1213 and part of the insulating material of the insulating housing 20 molded by the second injection molding in the snap-fit ​​groove 1223, the insulating housing 20 molded by the second injection molding is more tightly combined with the first insulating block 121 and the second insulating block 122 to improve the comprehensive bearing performance.

[0094] Further, step S6 includes:

[0095] S61: taking the insulating housing 20 out of the injection mold 90;

[0096] S62: Filling the sealing material 40 into the accommodating cavity 22 and the filling cavity 23 on the insulating housing 20;

[0097] S63: After the sealing material 40 is solidified, the connector 100 is obtained.

[0098] When the insulating housing 20 is taken out from the injection mold 90, the sliding pin 91 of the injection mold 90 is pulled out through the docking cavity 21, and the mold insert 92 of the injection mold 90 is pulled out through the accommodating cavity 22. After the mold insert 92 is pulled out, the side area of ​​the insulating body 12 that originally fits with the mold insert 92 is exposed in the accommodating cavity 22, and the corresponding area that fits with the mold insert 92 is the exposed area 16. In this embodiment, since the insulating body 12 is provided with a supporting block 125, and the side of the supporting block 125 that is away from the molding positioning groove 15 is in contact with the mold insert 92, the side of the supporting block 125 that is away from the molding positioning groove 15 is the exposed area 16.

[0099] See also Fig.15 and Fig.16, which is the second embodiment of the present invention. The difference from the connector 100 in the first embodiment lies in the first insulating block 121a and / or the second insulating block 122a. The remaining structures of this embodiment are the same as those of the connector 100 in the first embodiment, and will not be described in detail here. In this embodiment, a waterproof groove 17 is provided on the first insulating block 121a and / or the second insulating block 122a. The waterproof groove 17 is in the shape of a strip groove and extends along the third direction. The first terminal 11 is partially exposed in the waterproof groove 17. The insulating shell 20 is filled into the waterproof groove 17 during injection molding, so that the insulating shell 20 obtained by the second injection molding will be partially combined with the first terminal 11 in the waterproof groove 17. In this embodiment, the number of the waterproof grooves 17 is multiple, and each waterproof groove 17 is arranged on the first insulating block 121a and / or the second insulating block 122a at intervals along the first direction.

[0100] The beneficial effect of this embodiment is that when the first insulating block 121a and the second insulating block 122a are firstly injected, the outer wall of the first terminal 11 will be combined with the first insulating block 121a or the second insulating block 122a, and by providing the waterproof groove 17 and exposing part of the first terminal 11 in the waterproof groove 17, when the insulating housing 20 is secondly injected, part of the outer wall of the first terminal 11 will be combined with the insulating housing 20, because the outer wall of the first terminal 11 and the insulating material used for injection molding are not tightly combined during the injection molding process, and thus in actual use, the outer wall of the first terminal 11 is not tightly combined with the insulating material used for injection molding. During the molding process, water vapor will penetrate along the outer wall of the first terminal 11, causing damage to the electrical device. In this embodiment, the insulating materials in the first injection molding and the second injection molding are combined with the outer wall of the first terminal 11, so that multiple barrier layers can be formed on the outer surface of the first terminal 11. At the same time, in the two injection moldings, the insulating material is tightly combined with the outer wall of the first terminal 11 to effectively block the penetration of water vapor. Therefore, the structural design of the waterproof groove 17 can effectively reduce the penetration of water vapor caused by the loose combination of the outer surface of the first terminal 11 and the injected insulating material, thereby improving the waterproof performance.

[0101] In summary, the present invention provides a connector. Compared with the prior art, the present invention has the following beneficial effects:

[0102] 1. By setting a molding positioning groove 15 on one side of the insulating body 12, and forming an exposed area 16 on the side of the insulating body 12 away from the molding positioning groove 15, the molding positioning groove 15 is connected to the docking cavity 21, and the exposed area 16 is correspondingly exposed in the accommodating cavity 22, so that during injection molding, the sliding pin 91 can be inserted into the molding positioning groove through the docking cavity 21, and the mold insert 92 can be pressed against the exposed area 16 through the accommodating cavity 22, so as to clamp and fix the terminal module 10 during the secondary injection molding process. After the secondary injection molding is completed, the sliding pin 91 can be withdrawn from the docking cavity 21, and the mold insert 92 can also be withdrawn from the accommodating cavity 22, without leaving an opening on the outer surface of the insulating shell 20 to expose the insulating body 12 of the first injection molding, thereby improving the integrity of the secondary injection molding insulating shell 20 wrapping the terminal module 10, thereby improving the waterproof performance and structural strength of the connector 100.

[0103] 2. By providing the abutting section 2221 and the retaining section 2222, it is ensured that the second accommodating area 222 is arranged in a U-shaped structure, so that during the secondary injection molding, the mold insert 92 that abuts against the exposed area 16 through the accommodating cavity 22 is U-shaped. The U-shaped mold insert 92 structure can greatly improve the bearing strength of the mold insert 92 itself, thereby preventing the mold insert 92 from being bent and deformed during the injection molding process, thereby improving the stability and sustainability of the secondary injection molding process. At the same time, the position of the first accommodating area 221 corresponds to the position of the terminal module 10, and the U-shaped second accommodating area 222 is arranged on the outside of the first accommodating area 221, that is, it corresponds to the outside of the terminal module 10. At the same time, the depth of the second accommodating area 222 is greater than the depth of the first accommodating area 221. Therefore, when the sealing material 40 is filled in the accommodating cavity 22, the sealing material 40 enters the second accommodating area 222 and the first accommodating area 221 respectively. The sealing material 40 is sealed on the outside of the terminal module 10 through the second accommodating area 222, and the height difference of different depths is used to improve the tightness of the bonding between the sealing material 40 and the inner wall of the accommodating cavity 22, thereby improving the waterproof performance of the terminal module 10 at the accommodating cavity 22.

[0104] 3. By arranging the abutting blocks 125 at intervals on the side surface of the insulating body 12 away from the molded positioning groove 15, the abutting blocks 125 form an exposed area 16 on the side away from the insulating body 12 and are arranged in the abutting section 2221, so as to ensure that the mold insert 92 can position the terminal module 10 through the abutting blocks 125 during the secondary injection molding process, and at the same time, the insulating housing 20 molded by the secondary injection molding will fill the gap between two adjacent abutting blocks 125, thereby improving the connection strength between the terminal module 10 and the insulating housing 20, and improving the bearing performance of the connector 100. In addition, when the abutting blocks 125 arranged at intervals are fitted with the mold insert 92, the problem of loose fitting caused by the entire side surface of the insulating body 12 fitting with the mold insert 92 is avoided. The abutting blocks 125 arranged at intervals are intermittently fitted with the mold insert 92, which can effectively improve the stability of the fitting between the mold insert 92 and the abutting blocks 125, thereby improving the reliability of clamping and fixing the terminal module 10 during the secondary injection molding process.

[0105] 4. The first limiting pillar 1211 and the second limiting pillar 1212 are arranged between the first insulating block 121 and the second insulating block 122 along the third direction. By inserting the first limiting column 1211 into the circular first limiting hole 1221, the first limiting column 1211 abuts against the inner wall of the first limiting hole 1221 through the multiple convex ribs 12115 on the outer curved surface, so as to realize the relative translation positioning of the first insulating block 121 and the second insulating block 122; by inserting the second limiting column 1212 into the second limiting hole 1222, and the aperture size of the second limiting hole 1222 in the first direction is smaller than the aperture size in the third direction, the convex ribs 12125 on the second limiting column 1212 relatively abut against the inner wall of the second limiting hole 1222 in the first direction, and thus the first limiting column 1211 is inserted into the first limiting hole 1221 to realize the relative rotation positioning of the first insulating block 121 and the second insulating block 122, thereby realizing the precise positioning between the first insulating block 121 and the second insulating block 122 during the second injection molding. At the same time, the second positioning hole adopts a non-circular hole structure. Compared with the positioning method through the combination of two circular holes, the second limiting hole 1222 adopts a non-circular hole structure to effectively expand the aperture size, and the expansion of the aperture will not lead to a decrease in positioning accuracy. Therefore, by expanding the aperture size of the second limiting hole in the spacing arrangement direction of the first limiting column 1211 and the second limiting column 1212, the insertion and alignment of the first limiting column 1211 and the second limiting column 1212 can be made faster and more efficient while ensuring the positioning accuracy, thereby improving the assembly efficiency of the first insulating block 121 and the second insulating block 122.

[0106] 5. By setting a snap-fit ​​block 1213 between the first insulating block 121 and the second insulating block 122. By setting the snap-fit ​​block 1213 to be in a "T" shape, the snap-fit ​​groove 1223 corresponds to the shape of the snap-fit ​​block 1213 for the snap-fit ​​block 1213 to be inserted, and the reliability of positioning between the first insulating block 121 and the second insulating block 122 is improved through the "T"-shaped structure, thereby avoiding relative movement between the first insulating block 121 and the second insulating block 122 during the secondary injection molding process. And in the second direction, the depth dimension of the snap-fit ​​groove 1223 is greater than the height dimension of the snap-fit ​​block 1213, so after the snap-fit ​​block 1213 is inserted into the snap-fit ​​groove 1223, there is still some space in the snap-fit ​​groove 1223 for the second injection-molded insulating shell 20 to enter and fill. Therefore, by accommodating the snap-fit ​​block 1213 and the second injection-molded insulating shell 20 in the snap-fit ​​groove 1223, the second injection-molded insulating shell 20 is more tightly combined with the first insulating block 121 and the second insulating block 122, thereby improving the comprehensive load-bearing performance of the connector 100.

[0107] 6. By providing a waterproof groove 17 on the first insulating block 121 and / or the second insulating block 122, the first terminal 11 will be partially exposed in the waterproof groove 17, so that the insulating shell 20 molded by the second injection molding can be filled into the waterproof groove 17 and combined with the first terminal 11, so that the insulating material during the first injection molding and the second injection molding will be combined with the outer surface of the first terminal 11, and the insulating material is combined with the outer surface of the first terminal 11 during both injection moldings. Compared with the situation where the insulating material is combined with the outer surface of the first terminal 11 only during the first injection molding, a multi-section barrier layer can be formed on the outer surface of the first terminal 11, and at the same time, one of the two times the insulating material is combined with the outer surface of the first terminal 11 is tightly combined to ensure good sealing. Therefore, by providing the waterproof groove 17 and exposing the first terminal 11 partially in the waterproof groove 17, the outer surface of the first terminal 11 is combined with the insulating material during the two injection molding processes, thereby reducing the infiltration of water vapor along the outer wall of the first terminal 11, so as to improve the waterproof performance of the connector 100.

[0108] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A connector, characterized in that: include: A terminal module, the terminal module comprising a plurality of first terminals and an insulating body injection-molded outside the first terminals; at least one molding positioning groove is formed on one side surface of the insulating body; and An insulating shell, the insulating shell is injection molded on the outside of the terminal module to cover the terminal module to form a whole; Among them, a docking cavity is provided on one side of the insulating shell, and a accommodating cavity is provided on the other side, and the docking cavity and the accommodating cavity are both connected to the outside; one end of each of the first terminals is located in the docking cavity, and the other end of each of the first terminals passes through the accommodating cavity; the molding positioning groove is located in the docking cavity and is connected to the docking cavity; a side surface of the insulating body facing away from the molding positioning groove is at least partially exposed in the accommodating cavity to form an exposed area, and the exposed area and the molding positioning groove are used to cooperate with the injection mold to position the terminal module when injecting the insulating shell.

2. The connector according to claim 1, characterized in that: The accommodating cavity includes a first accommodating area located in the middle and a second accommodating area located at the edge; the first accommodating area and the second accommodating area are recessed from the same side of the insulating shell toward the inside of the insulating shell, the recess depth of the second accommodating area is greater than the recess depth of the first accommodating area, one end of the first terminal passes through the first accommodating area, and the exposed area is correspondingly exposed in the second accommodating area.

3. The connector according to claim 2, characterized in that: The second accommodating area includes a supporting section and two retaining sections connecting the two ends of the supporting section; the supporting section is in the shape of a strip-shaped groove, and the exposed area is correspondingly exposed in the supporting section. Each retaining section extends from one end of the supporting section toward the direction close to the docking cavity, so that the second accommodating area is arranged in a U-shaped structure.

4. The connector according to claim 1, characterized in that: At least two abutment blocks are protruding from one side surface of the insulating body away from the molding positioning groove; each of the abutment blocks is arranged at intervals on one side surface of the insulating body away from the molding positioning groove, and a side surface of each of the abutment blocks facing away from the molding positioning groove forms the exposed area and is exposed in the accommodating cavity, and the insulating shell fills the gap between two adjacent abutment blocks during injection molding.

5. The connector according to claim 1, characterized in that: The insulating housing is provided with a mounting plate, the docking cavity and the accommodating cavity are respectively arranged on two sides of the mounting plate; a waterproof member is provided on the mounting plate, and the waterproof member extends around the outer edge of the mounting plate; The accommodating cavity is filled with a sealing material, and one end of the first terminal passes through the sealing material.

6. The connector according to claim 1, characterized in that: The connector further includes at least two second terminals spaced apart along an arrangement direction; the first terminals are used to transmit signals, the second terminals are used to transmit current, and each of the second terminals is injection-molded and coated by the insulating housing together with the terminal module; The insulating housing is provided with a filling cavity, and the filling cavity and the accommodating cavity are located on the same side of the insulating housing; the second terminal includes a conductive portion and a mounting foot; the insulating housing is injection molded on the outside of the conductive portion, one end of the mounting foot is connected to the conductive portion, and the other end of the mounting foot passes through the filling cavity; Among them, a first stop hole and a second stop hole are provided at one end of the conductive part away from the mounting foot; the first stop hole and the second stop hole are arranged on the conductive part at intervals along the arrangement direction, the first stop hole is a round hole, and the aperture size of the second stop hole in the arrangement direction is larger than the aperture size perpendicular to the arrangement direction.

7. The connector according to any one of claims 1 to 6, characterized in that: The connector has a first direction and a second direction intersecting each other; the docking cavity is recessed into the insulating housing along the first direction, and the molded positioning groove is recessed into the insulating body along the first direction; The insulating body includes a first insulating block and a second insulating block; the plurality of first terminals are divided into two groups; the first insulating block is injection molded on the outside of one group of the first terminals, and the second insulating block is injection molded on the outside of the other group of the first terminals, and the first insulating block and the second insulating block are spliced ​​along the second direction; each of the first terminals includes a contact portion and a welding portion, the contact portions of the two groups of the first terminals are arranged in the docking cavity along the first direction, and the welding portions of the two groups of the first terminals pass through the accommodating cavity along the second direction.

8. The connector according to claim 7, characterized in that: The connector also has a third direction, and the first direction, the second direction and the third direction intersect each other; One of the first insulating block and the second insulating block is provided with a first limiting column, and the other is provided with a first limiting hole; the first limiting column is correspondingly inserted into the first limiting hole along the second direction, and the first limiting hole is a circular hole; a plurality of convex ridges are provided on the outer curved surface of the first limiting column, and the plurality of convex ridges are arranged at intervals around the first limiting column, and each of the convex ridges abuts against the inner wall of the first limiting hole; One of the first insulating block and the second insulating block is provided with a second limiting column, and the other is provided with a second limiting hole; the second limiting column is arranged on one side of the first limiting column in the third direction, and the second limiting column is correspondingly inserted into the second limiting hole along the second direction, and the aperture size of the second limiting hole in the first direction is smaller than the aperture size of the second limiting hole in the third direction; a pair of convex ribs are provided on the second limiting column, and the pair of convex ribs are relatively arranged on both sides of the second limiting column in the first direction, and the convex ribs are abutted against the inner wall of the second limiting hole in the first direction.

9. The connector according to claim 7, characterized in that: One of the first insulating block and the second insulating block is provided with a snap-fit ​​block, and the other is provided with a snap-fit ​​groove; the snap-fit ​​block is inserted into the snap-fit ​​groove along the second direction, and the cross-sectional shape of the snap-fit ​​block perpendicular to the second direction is "T"-shaped, and the snap-fit ​​groove corresponds to the shape of the snap-fit ​​block; The height of the snap-fit ​​block in the second direction is smaller than the depth of the snap-fit ​​groove in the second direction, and the insulating shell is partially filled into the snap-fit ​​groove during injection molding.

10. The connector according to claim 7, characterized in that: The connector also has a third direction, and the first direction, the second direction and the third direction intersect each other; A waterproof groove is provided on the first insulating block and / or the second insulating block; the waterproof groove is in the shape of a strip groove extending along a third direction, the first terminal is partially exposed in the waterproof groove, and the insulating shell is filled into the waterproof groove during injection molding.

11. A method for processing a connector, characterized in that: include: Providing a plurality of first terminals, and injection molding an insulating body on the plurality of first terminals to fix the plurality of first terminals to obtain a terminal module; Put the terminal module into the injection mold, insert the sliding pin into the molding positioning groove of the insulating body, press the mold insert on the side of the insulating body away from the molding positioning groove, and the sliding pin and the mold insert clamp the insulating body to fix the terminal module in the injection mold; Providing a second terminal, placing the second terminal into the injection mold and fixing it; Injection molding an insulating shell in the injection mold, wherein the insulating shell covers and fixes the terminal module and the second terminal; After the insulating shell is solidified and shaped, it is separated from the injection mold. A docking cavity and a receiving cavity are formed on the insulating shell. When the injection mold is separated from the insulating shell, the docking cavity is used for separating the sliding pin from the terminal module, and the receiving cavity is used for separating the mold insert from the terminal module. A connector is obtained.

12. The connector according to claim 11, characterized in that: The steps of providing a plurality of first terminals, and injection molding an insulating body on the plurality of first terminals to fix the plurality of first terminals to obtain a terminal module include: The plurality of first terminals are divided into two groups, a first insulating block is injection-molded outside the first terminals of one group, and a second insulating block is injection-molded outside the first terminals of the other group; The first insulating block and the second insulating block are fixed to form the insulating body by means of buckling blocks and buckling grooves.

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