A connector

Abstract

The utility model provides a kind of connector, including insulating shell, connecting channel is equipped in insulating shell, connecting channel is equipped with sealing groove, sealing groove is equipped with inlaying fixed block, connecting channel is divided into plug-in cavity and wiring cavity arranged in front and back by inlaying fixed block, still several terminals are inserted in inlaying fixed block, and the both ends of terminal respectively extend to plug-in cavity and wiring cavity;Two-step injection molding process is used, first form inlaying fixed block to pre-fix terminal, then overall cladding insulating shell, avoid the influence of internal stress to terminal position, improve the coplanarity of terminal and connection reliability;By setting sealing rubber layer between inlaying fixed block and plug-in cavity, and setting waterproof ring and waterproof part outside insulating shell, multi-stage sealing protection system is constructed, and the moisture-proof, waterproof and dustproof ability of connector is improved;The embedded structure of metal fixed block and fixed seat is introduced, and the installation strength and anti-vibration performance of connector are enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, and specifically relates to a connector. Background Technology

[0002] As electronic devices evolve towards miniaturization, high density, and high reliability, electrical connectors, as critical interface components, directly impact the stable operation of the entire system. Currently, most electrical connectors on the market employ a one-time injection molding process, directly embedding metal terminals into an insulating shell. While this process offers high manufacturing efficiency, the internal stress generated during injection molding directly affects the terminals, causing positional misalignment and resulting in issues such as low coplanarity and poor alignment. This negatively impacts user experience and reduces connection reliability and stability, especially in multi-pin, high-density applications. Therefore, the industry urgently needs a connector solution that offers high holding force, excellent sealing performance, and a reliable mounting structure. Utility Model Content

[0003] (1) Technical problems to be solved This invention provides a connector designed to solve the aforementioned problems.

[0004] (2) Technical solution This utility model provides a connector, including an insulating shell, a connection channel inside the insulating shell, a sealing groove inside the connection channel, an embedded fixing block inside the sealing groove, the embedded fixing block dividing the connection channel into a front and rear insertion cavity and a wiring cavity, and a plurality of terminals are inserted on the embedded fixing block, the front and rear ends of the terminals extending to the insertion cavity and the wiring cavity respectively. During injection molding, the embedded fixing block is first inserted into several terminals through secondary injection molding, and then the insulating shell is covered by the embedded fixing block with the inserted terminals through secondary injection molding.

[0005] Furthermore, the embedded fixing block has a sealant on the side facing the insertion cavity.

[0006] Furthermore, the outer peripheral wall of the insulating shell is radially tapered to form a waterproof groove, and a waterproof ring is fitted inside the waterproof groove.

[0007] Furthermore, the waterproof groove and the waterproof ring are disposed on the outside of the insertion cavity and circumferentially surround the insertion cavity.

[0008] Furthermore, the insulating shell extends outward to have at least one fixing seat, the fixing seat having a metal fixing block embedded therein, and the metal fixing block having a screw hole.

[0009] Furthermore, the fixing seat encapsulates the metal fixing block through secondary injection molding, and the outer peripheral wall of the metal fixing block is provided with a snap-fit ​​groove that tapers inward in a radial direction.

[0010] Furthermore, a connector is connected to the outside of the wiring cavity of the insulating housing, and at least a portion of the connector is inserted into the wiring cavity.

[0011] Furthermore, the connector is provided with a plurality of connecting grooves that extend from front to back, and the plurality of connecting grooves are respectively arranged in correspondence with the plurality of terminals, and a portion of the terminals in the wiring cavity are respectively inserted into the connecting grooves.

[0012] Furthermore, a waterproof component is fitted onto the outer peripheral wall of the connector, and the waterproof component abuts against the inner wall of the wiring cavity.

[0013] Furthermore, the terminals are arranged in two rows, with six terminals in each row.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: A two-step injection molding process is adopted. First, an embedded fixing block is formed to precisely position and pre-fix the terminals. Then, the entire structure is covered with an insulating shell. This completely avoids the influence of internal stress on the terminal position during injection molding, improving the coplanarity of the terminals and the reliability of the connection. By setting a sealing layer between the embedded fixing block and the insertion cavity, and setting a waterproof ring and waterproof components on the outside of the insulating shell, a multi-level sealing protection system is constructed, which greatly improves the connector's moisture-proof, waterproof, and dustproof capabilities. By introducing a mating structure between the metal fixing block and the fixing seat, and using a snap-fit ​​groove to form a mechanical interlock, the installation strength and vibration resistance of the connector are enhanced, ensuring long-term stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is an exploded view of the present invention.

[0017] Figure 3 This is a cross-sectional view of the present invention.

[0018] Figure 4 This is a schematic diagram of the waterproof groove and waterproof ring of this utility model.

[0019] Figure 5 This is a schematic diagram of the installation of the metal fixing block of this utility model.

[0020] Figure 6 This is a schematic diagram of the connector of this utility model.

[0021] Figure 7 This is a schematic diagram of the installation of the connector of this utility model.

[0022] Reference numerals: 1-Insulating housing, 11-Sealing groove, 12-Plug-in cavity, 13-Wiring cavity, 14-Waterproof groove, 15-Fixing base, 2-Embedded fixing block, 3-Terminal, 4-Waterproof ring, 5-Metal fixing block, 51-Screw hole, 52-Snap-fit ​​groove, 6-Sealant, 7-Connector, 71-Connecting groove. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] like Figure 1-3 As shown, this utility model provides a connector, including an insulating shell 1. The insulating shell 1 has a front-to-back guiding structure, with the front part for insertion into a corresponding socket and the rear part for connecting wires. The insulating shell 1 also has a connecting channel extending front and back. A sealing groove 11 is provided in the middle of the connecting channel. An embedded fixing block 2 is provided in the sealing groove 11. The embedded fixing block 2 divides the connecting channel into two independent cavities, a front insertion cavity 12 and a rear wiring cavity 13. Multiple sets of terminals 3 are inserted parallel to the embedded fixing block 2. Specifically, the terminals 3 are arranged in two rows of 6, for a total of 12. The middle part of the terminals 3 is firmly encapsulated in the embedded fixing block 2, thereby achieving precise positioning and support. The front and rear ends extend into the insertion cavity 12 and the wiring cavity 13, respectively. All 12 terminals 3 are parallel to the axis, and the front and rear ends are coplanar. All terminals 3 are made of metal and formed by an integral stamping and folding process. During injection molding, the core assembly and packaging are completed by a two-step secondary injection molding method: First, using the 12 terminals 3 as the base, the embedded fixing block 2 is formed by secondary injection molding. The 12 terminals 3 are inserted into the embedded fixing block 2, so that the relative position and spacing of the 12 terminals 3 are precisely fixed in the initial stage, laying the foundation for subsequent manufacturing. Then, using the embedded fixing block 2 with the terminals 3 inserted as the base, the insulating shell 1 is formed again by secondary injection molding. In this process, the sealing groove 11 in the insulating shell 1 covers the embedded fixing block 2, and the front and rear ends of the terminals 3 extend into the insertion cavity 12 and the wiring cavity 13, respectively.

[0025] In the prior art, the common practice is to use the terminal 3 as the base and directly form the insulating shell 1 through secondary injection molding. However, this method causes the internal stress generated by the scouring force of the liquid plastic and the shrinkage stress during cooling and solidification to directly act on the terminal 3 during the injection molding process, resulting in a displacement of the relative position of the terminal 3. This directly leads to quality defects such as off-axis and low coplanarity of the terminal 3, which seriously affects the connection reliability and yield of the product. To solve this problem, this application adopts a two-step secondary injection molding process. First, the embedded fixing block 2 is set to be formed with the terminal 3 to initially fix the position of the terminal 3 and ensure that the coaxiality and coplanarity have reached the design standard before entering the next process. Then, the insulating shell 1 is injection molded, which will not affect the terminal 3 and significantly improve the product accuracy and yield.

[0026] Specifically, such as Figure 2-3 As shown, in one embodiment of this utility model, after the injection molding of the insulating shell 1 is completed, the insulating shell 1 is positioned vertically with the insertion cavity 12 facing upwards, and adhesive is applied into the insertion cavity 12. Under the action of gravity, the adhesive accumulates on one side of the embedded fixing block 2 and is cured after high-temperature baking to form a sealant 6. This structural design of the sealant 6 can, on the one hand, fill the gap between the terminal 3 and the insulating shell 1, forming a waterproof barrier to prevent water, moisture, dust, etc. from entering. On the other hand, the cured sealant 6 and the embedded fixing block 2 further fix the terminal 3, significantly enhancing its positional stability and preventing displacement during insertion, removal, or vibration. In addition, the sealant 6 itself has good insulation properties, physically isolating adjacent terminals 3, providing additional electrical insulation protection, and improving the safety and reliability of the connector.

[0027] Specifically, such as Figure 4 As shown in one embodiment of this utility model, the front part of the insulating shell 1, which corresponds to the outer peripheral wall of the insertion cavity 12, has an annular waterproof groove 14 formed by radial contraction. The waterproof groove 14 surrounds the front part of the insulating shell 1, including the insertion cavity 12, and an elastic waterproof ring 4 is fitted inside the waterproof groove 14. When the front part of the insulating shell 1 is inserted into the socket, the outer peripheral surface of the waterproof ring 4 is elastically interference-fitted with the inner wall of the socket. Under this action, the waterproof ring 4 undergoes elastic deformation, thereby tightly filling the gap between the front part of the insulating shell 1 and the socket, playing a role in waterproofing, moisture-proofing, and dustproofing, significantly improving the interface protection level and long-term reliability of the connector in harsh environments.

[0028] Specifically, such as Figure 5As shown in one embodiment of this utility model, the insulating shell 1 extends radially outward integrally with a fixing seat 15. The fixing seat 15 is embedded with a metal fixing block 5. The metal fixing block 5 is a circular ring structure with a circular screw hole 51 in the middle. This structural design provides users with a robust and reliable mechanical mounting point. By passing the screw through the screw hole 51 and screwing it into the threaded hole of the corresponding socket, a firm screw connection between the connector and the socket can be achieved. This fixing method not only ensures the long-term mating stability of the connector under harsh working conditions such as vibration and impact, but also avoids accidental detachment caused by external force pulling, greatly improving the reliability and safety of the entire connection system.

[0029] Furthermore, such as Figure 5 As shown, the fixing base 15 encapsulates the metal fixing block 5 through secondary injection molding. To prevent the metal fixing block 5 from detaching during long-term use or under external force, a snap-fit ​​groove 52 is formed radially inwardly in the middle of the outer peripheral wall of the metal fixing block 5. During injection molding, the fixing base 15 fully fills the snap-fit ​​groove 52. After cooling and solidification, the plastic portion embedded in the groove forms a robust interlocking structure with the metal fixing block 5. This structure ensures that the metal fixing block 5 is firmly anchored in the fixing base 15, significantly enhancing its resistance to pull-out and torsion, thereby improving the overall connection strength and service life of the connector.

[0030] Specifically, such as Figure 6-7 As shown in the figure, in one embodiment of this utility model, the rear part of the insulating shell 1 is connected to a connector 7. The connector 7 is provided with a plurality of connecting grooves 71 that run through the front and rear. The number and arrangement of the connecting grooves 71 correspond one-to-one with the 12 terminals 3. Correspondingly, the portion of the terminals 3 extending into the wiring cavity 13 is also inserted into the connecting grooves 71. As can be seen from the figure, the depth of the terminals 3 extending into the connecting grooves 71 is about half, while the other half of the depth is such that the wire is inserted from the rear end of the connecting groove 71 and contacts and connects with the terminals 3. This structural design can isolate the wiring cavities 13 from each other to avoid contact, while allowing the wire to be connected to the terminals 3 accordingly.

[0031] Furthermore, such as Figure 7 As shown, the outer peripheral wall of the connector 7 is fitted with a waterproof component 72, which abuts against the inner wall of the wiring cavity 13, and serves to provide waterproof, moisture-proof and dustproof functions.

[0032] The following is a detailed explanation of the working principle of this utility model: The working principle of this utility model is based on its unique structural design and two-step secondary injection molding process. First, during manufacturing, an embedded fixing block is formed through the first secondary injection molding, precisely fixing multiple terminals and maintaining their relative positions and spacing, ensuring the coplanarity and axial consistency of all terminals. Subsequently, in the second injection molding, an insulating shell is formed by completely encapsulating the embedded fixing block and terminal assembly, with insertion and wiring cavities formed inside. This process effectively isolates the direct impact of plastic flow and shrinkage on the terminals during injection molding, thus ensuring the positional accuracy and electrical performance of the terminals. In use, the insertion cavity is used to mate with the corresponding socket. Due to its high coplanarity and good alignment, the terminal tip can achieve smooth connection with low insertion force during insertion. Simultaneously, the sealant and waterproof ring form multiple sealing barriers from the inside and outside, respectively, preventing moisture and dust intrusion. The metal fixing block is fixed to external equipment through screw holes, and its snap-fit ​​groove structure forms a mechanical interlock with the fixing base, ensuring that the connector does not loosen under vibration. The connector inside the wiring cavity is inserted into the rear end of the terminal to achieve a reliable connection of the wires, and the interface sealing is further enhanced by a waterproof component.

[0033] The innovation of this utility model lies in: First, a two-step injection molding process is employed. First, an embedded fixing block is formed to precisely position and pre-fix the terminals. Then, the entire assembly is covered with an insulating shell. This completely avoids the influence of internal stress on the terminal position during injection molding, significantly improving the coplanarity and alignment of the terminals, resulting in lower insertion force and higher connection reliability. Second, by placing a sealing layer between the embedded fixing block and the insertion cavity, and by installing a waterproof ring and waterproof components on the outside of the insulating shell, a multi-level sealing protection system is constructed, greatly enhancing the connector's moisture-proof, waterproof, and dustproof capabilities, making it suitable for harsh working conditions. Furthermore, by introducing a mating structure between the metal fixing block and the fixing seat, and utilizing a snap-fit ​​groove to form a mechanical interlock, the connector's installation strength and vibration resistance are enhanced, ensuring long-term stability. Overall, this invention optimizes structural compactness and process controllability, possessing multiple advantages such as low insertion and extraction force, high holding force, excellent environmental adaptability, and long lifespan, meeting the stringent requirements of modern electronic equipment for high-performance connectors.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A connector, characterized in that, Includes an insulating shell (1), the insulating shell (1) is provided with a connection channel, the connection channel is provided with a sealing groove (11), the sealing groove (11) is provided with an embedded fixing block (2), the embedded fixing block (2) divides the connection channel into a front and rear set plug-in cavity (12) and a wiring cavity (13), and a number of terminals (3) are also inserted on the embedded fixing block (2), the front and rear ends of the terminals (3) extend to the plug-in cavity (12) and the wiring cavity (13) respectively; During injection molding, the embedded fixing block (2) is first inserted into several terminals (3) through secondary injection molding, and the insulating shell (1) is then covered with the embedded fixing block (2) with the inserted terminals (3) through secondary injection molding.

2. The connector according to claim 1, characterized in that, The embedded fixing block (2) has a sealant (6) on the side facing the insertion cavity (12).

3. The connector according to claim 1, characterized in that, The outer peripheral wall of the insulating shell (1) is radially contracted to form a waterproof groove (14), and a waterproof ring (4) is fitted inside the waterproof groove (14).

4. The connector according to claim 3, characterized in that, The waterproof groove (14) and the waterproof ring (4) are disposed on the outside of the insertion cavity (12) and surround the insertion cavity (12) circumferentially.

5. The connector according to claim 1, characterized in that, The insulating shell (1) extends outward to have at least one fixing seat (15), and a metal fixing block (5) is embedded in the fixing seat (15), and a screw hole (51) is provided in the metal fixing block (5).

6. A connector according to claim 5, characterized in that, The fixing seat (15) encapsulates the metal fixing block (5) through secondary injection molding. The outer peripheral wall of the metal fixing block (5) is provided with a snap-fit ​​groove (52) that shrinks inward along the radial direction.

7. The connector according to claim 1, characterized in that, A connector (7) is connected to the outside of the wiring cavity (13) of the insulating housing (1), and at least a portion of the connector (7) is inserted into the wiring cavity (13).

8. A connector according to claim 7, characterized in that, The connector (7) is provided with a plurality of connecting grooves (71) that run through the front and back. The plurality of connecting grooves (71) are provided in a one-to-one correspondence with the plurality of terminals (3). Some of the terminals (3) of the wiring cavity (13) are inserted into the connecting grooves (71).

9. A connector according to claim 8, characterized in that, The outer peripheral wall of the connector (7) is fitted with a waterproof component (72), which abuts against the inner wall of the wiring cavity (13).

10. A connector according to claim 1, characterized in that, The terminals (3) are arranged in two rows, with 6 terminals in each row.

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