A waterproof side insertion type-c connector

Abstract

The application discloses a waterproof side insertion TYPE-C connector, which comprises an outer shell, an inner shell, an insulating fixing seat, a double-row terminal module and a joint shell. The convex ring integrally formed at the rear end of the joint shell is closely attached to the insulating fixing seat, a waterproof injection molding part covering the outer surface of the convex ring is formed by filling the gap through low-pressure injection molding, seamless sealing of the butt joint of the shell is realized, the path of liquid seepage along the gap is blocked, the waterproof sealing part sleeved on the front end of the joint shell forms the second waterproof line outside, double protection can stably reach the IP68 level waterproof standard, the positioning column and the positioning sheet are in a planar triangular position on one side of the insulating fixing seat welded with the positioning column, a more stable triangular fixing structure is formed, the traditional double-positioning-column linear positioning mode is replaced, the freedom of the female seat connector in the welding process can be effectively limited, SMT precise pre-positioning is realized, and the welding yield is significantly improved.

Description

Technical Field

[0001] This invention relates to the field of electrical connector technology, and more specifically to a waterproof side-mounted TYPE-C connector. Background Technology

[0002] With the rapid development of science and technology in the electronics industry, electronic products are evolving rapidly towards thinner, lighter, smaller, and more multifunctional designs. As a core component for transmitting electrical signals and power, the performance requirements for electrical connectors are constantly increasing. The USB Type-C interface, with its significant advantages such as reversible insertion, high transmission speed, strong power supply capability, and high integration, has become the mainstream interface standard in consumer electronics, industrial control, and automotive electronics. Among them, the side-mount SMT (surface mount technology) Type-C female connector is widely used in smartphones, tablets, smart wearable devices, and other electronic products with stringent size requirements because it effectively saves PCB board space and optimizes internal wiring.

[0003] In practical applications, TYPE-C female connectors often face the challenges of complex environments such as humidity, dust, and vibration. Waterproof performance and soldering reliability have become key indicators for measuring their quality. Currently, existing waterproof TYPE-C female connectors mainly rely on external silicone gaskets to achieve a seal between the female connector and the electronic product's casing. This single external sealing method has significant limitations: in high humidity, high-pressure spray, or short-term immersion environments, external moisture and water vapor can easily seep into the connector's internal cavity through the assembly gap between the internal plastic shell and the metal cover plate, leading to oxidation of internal terminals and corrosion of the PCB board. This, in turn, affects the stability and reliability of electrical conduction, ultimately causing connector failure. At the same time, traditional connector shells mostly use mechanical connection methods such as riveting and snap-fitting, which inevitably leave inherent gaps at the connection points. Even with additional sealing components, it is difficult to achieve a complete seal and cannot reliably meet the high waterproof standard of IP68.

[0004] On the other hand, the positioning structure of existing side-mounted TYPE-C SMT female connectors also has many shortcomings. The industry generally uses two positioning pins arranged in a straight line to achieve SMT soldering pre-positioning. This structure can only restrict the connector's freedom in two directions in the plane, and cannot effectively prevent rotation and displacement caused by the tension generated by the melting solder during the soldering process. It is very easy to have soldering defects such as misalignment of the pads, cold solder joints, and solder bridging, which greatly reduces the production yield and seriously affects the product's service life and electrical performance. Summary of the Invention

[0005] To address the technical deficiencies in the background technology, this invention proposes a waterproof side-insertion TYPE-C connector, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows: A waterproof side-mounted TYPE-C connector includes an outer shell, an inner shell, an insulating mounting base, a double-row terminal module, and a connector housing. The inner shell is sandwiched between the outer shell and the insulating fixing base. The inner shell covers three end faces of the insulating fixing base. The outer shell covers three end faces and the rear of the insulating fixing base. The outer shell has an opening on the side of the insulating fixing base that is not covered. A positioning structure is provided at the opening position. The connector housing is connected to the front end of the outer shell, and the connector housing is provided with a waterproof structure; The waterproof structure includes a waterproof injection molded part disposed at the rear end of the connector housing and a waterproof sealing part sleeved at the front end of the connector housing. At the end face where the connector housing and the outer shell are joined, the housing wall is bent inward radially to form an axially protruding convex ring. The front end of the insulating fixing seat is inserted into the connector housing and fits against the inner surface of the convex ring. The gap between the inner surface of the convex ring and the insulating fixing seat is filled by injection molding to form a waterproof injection molded part covering the outer surface of the convex ring. The positioning structure includes a positioning post disposed on the insulating fixing base and extending outward toward the opening, and positioning pieces disposed on both sides of the inner housing and extending outward toward the opening. The positioning pieces and the positioning post are arranged in a triangular position in the plane.

[0006] As an improvement to the above solution, the connector housing includes an inner connector housing and an outer connector housing. The inner connector housing is inserted into the outer connector housing along the front end of the outer connector housing and is projectile welded to the outer connector housing. The rear end of the outer connector housing is integrally formed with the projectile ring.

[0007] As an improvement to the above solution, the front end of the inner connector housing extends outward along the front end of the outer connector housing, and its housing wall is bent outward radially to form an outer skirt, and a snap-fit ​​gap is formed between the outer skirt and the outer connector housing. The inner wall of the front end of the waterproof seal is bent radially inward to form an inner skirt. The waterproof seal is sleeved on the front end of the outer connector housing, and the inner skirt is sandwiched in the snap-fit ​​gap. The outer surface of the waterproof seal is provided with a plurality of water-blocking rings arranged at intervals along its axial direction.

[0008] As an improvement to the above solution, the insulating fixing seat includes a first insulating seat disposed at the front end of the double-row terminal module and a second insulating seat disposed at the rear end of the double-row terminal module. The end face of the second insulating seat is provided with a heat dissipation groove, and the length direction of the heat dissipation groove is aligned with the length direction of the double-row terminal module.

[0009] As an improvement to the above solution, the inner surface of the convex ring is fitted with the outer surface of the front end of the second insulating seat, and the second insulating seat is provided with an injection hole corresponding to the connection position with the convex ring. The waterproof injection molded part formed by injection molding connects the first insulating seat and the second insulating seat.

[0010] As an improvement to the above solution, the insulating fixing base has protrusions on both end faces near the opening, and the inner shell has grooves on the side near the opening that are adapted to the protrusions. The positioning piece is integrally formed with the inner shell and extends outward from the opening in accordance with the edge of the protrusion.

[0011] As an improvement to the above solution, a first positioning block is provided at the edge where the boss fits with the inner shell, and a first positioning groove adapted to the shape of the inner shell is provided at the position of the first positioning block; a second positioning block is provided at the end face where the boss fits with the outer shell, and a second positioning groove adapted to the shape of the outer shell is provided at the position of the second positioning block.

[0012] As an improvement to the above solution, a first fixing structure is provided between the inner shell and the insulating fixing seat. The first fixing structure includes a first fixing groove formed on both end faces of the insulating fixing seat and a first fixing block provided on the inner shell corresponding to the position of the first fixing groove.

[0013] As an improvement to the above solution, a second fixing structure is provided between the outer shell and the insulating fixing base. The second fixing structure includes a second fixing groove formed on both end faces of the outer shell and a second fixing block provided on the end face of the boss corresponding to the position of the second fixing groove.

[0014] The beneficial effects of this invention are as follows: This technical solution utilizes a one-piece molded convex ring at the rear end of the connector housing, which fits tightly against the insulating fixing seat. Low-pressure injection molding fills the gaps, forming a waterproof injection-molded part covering the outer surface of the convex ring, achieving a seamless seal at the housing joint and blocking the path of liquid seepage along the gaps. Combined with the waterproof seal at the front end of the connector housing, this forms a second external waterproof line of defense. This dual protection stably achieves an IP68 waterproof rating. The connector housing employs a separate inner and outer layer projection welding connection structure, eliminating the inherent gaps and leakage risks of traditional riveting and snap-fit ​​connections. The positioning pins and positioning plates are positioned in a planar triangular shape on the side welded to the insulating fixing seat, forming a more stable triangular fixing structure. This replaces the traditional double-positioning pin linear positioning method, effectively limiting the freedom of the female connector during welding and enabling SMT (Surface Mount Technology). Precise positioning significantly improves welding yield; effectively prevents the insulating retainer from loosening or shifting under repeated insertion / removal or vibration conditions, ensuring the long-term stability of internal terminal electrical connections, and significantly extending the service life of connectors in harsh environments such as humidity, dust, and vibration. It can fully meet the comprehensive needs of modern electronic products for connectors with high performance, high yield, and high adaptability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the connector of the present invention.

[0016] Figure 2 This is a schematic diagram of the overall structure of the connector of the present invention in its unfolded state.

[0017] Figure 3 This is a schematic diagram of the outer shell and inner shell of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the outer shell and the insulating fixing base of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of the inner shell and the insulating fixing base of the present invention.

[0020] Figure 6 This is a schematic diagram of the internal structure of the connector of the present invention.

[0021] Figure 7 This is a schematic diagram of the connection state between the connector housing and the waterproof structure of the present invention.

[0022] Figure 8 This is a schematic diagram of the unfolded connection structure between the connector housing and the waterproof structure of the present invention.

[0023] Figure 9 This is a schematic diagram of the location and structure of the waterproof injection molded part inside the insulating fixing seat of the present invention.

[0024] Figure 10This is a schematic diagram of the injection hole location structure of the insulating fixing seat of the present invention.

[0025] The components include: outer shell 1, second positioning groove 11, opening 12, connecting foot 13, inner shell 2, groove 21, first positioning groove 22, insulating fixing seat 3, first insulating seat 31, second insulating seat 32, boss 33, first positioning block 331, second positioning block 332, heat dissipation groove 34, injection hole 35, double-row terminal module 4, connector shell 5, inner connector shell 51, outer skirt 511, outer connector shell 52, convex ring 521, solder point 522, snap-fit ​​gap 53, positioning structure 6, positioning post 61, positioning piece 62, waterproof structure 7, waterproof injection molded part 71, waterproof sealing part 72, inner skirt 721, water-blocking ring 722, first fixing structure 8, first fixing groove 81, first fixing block 82, second fixing structure 9, second fixing groove 91, second fixing block 92. Detailed Implementation

[0026] The embodiments of the present invention will be described below with reference to the accompanying drawings and related examples. The embodiments of the present invention are not limited to the following examples, and the present invention relates to the relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0027] This technical solution discloses a waterproof side-insertion TYPE-C connector, including an outer shell 1, an inner shell 2, an insulating fixing base 3, a double-row terminal module 4, and a connector shell 5; The inner shell 2 fits snugly over the three outer surfaces of the insulating mounting base 3, and the outer shell 1 further covers the outer side of the inner shell 2 and the rear of the insulating mounting base 3, forming a double-layer metal protective frame. The connector shell 5 is sealed to the front end of the outer shell 1, forming a plug-in cavity for inserting the male connector. The double-row terminal module 4 is embedded and fixed inside the insulating mounting base 3 for transmitting electrical signals and power. The waterproof structure 7 is simultaneously set at the front and rear ends of the connector shell 5, constructing a double waterproof barrier. The positioning structure 6 is set at the opening 12 on the side of the outer shell 1 corresponding to the uncovered side of the insulating mounting base 3, for achieving precise pre-positioning during SMT soldering, and can simultaneously achieve IP68 waterproof performance and precise SMT soldering positioning capability.

[0028] In the technical solution of the outer shell 1, the outer shell 1 is a stamped U-shaped metal shell with a U-shaped bend in its structure, which can simultaneously cover the three sides of the insulating fixing base 3 and the entire rear area, forming an accommodating cavity that is completely adapted to the shape of the insulating fixing base 3; the outer shell 1 provides high-strength mechanical protection for the internal components of the connector, preventing the internal components from deforming or being damaged during insertion and removal or when subjected to external impact; at the same time, the outer shell 1 serves as the external mounting reference for the connector, with its front end precisely mating with the connector shell 5, and its rear end having an integrally formed connecting foot 13 for welding and fixing the connector as a whole onto the PCB board.

[0029] The inner shell 2 is a thin U-shaped metal shell formed by stamping. Its size is smaller than that of the outer shell 1. It is sandwiched between the outer shell 1 and the insulating fixing seat 3, and closely fits and covers the three sides of the insulating fixing seat 3. The inner shell 2 can provide a precise internal positioning reference. The grooves 21, positioning slots and other structures opened on the side of the inner shell 2 cooperate with the corresponding structures on the insulating fixing seat 3 to realize the rapid and accurate assembly of the insulating fixing seat 3. At the same time, together with the outer shell 1, it forms a double-layer shielding structure, which enhances the electromagnetic shielding performance, effectively blocks the influence of external electromagnetic interference on the internal signal transmission, and prevents the internal signal from radiating outward.

[0030] Furthermore, in the above scheme, the insulating fixing base 3 includes a first insulating base 31 disposed at the front end of the double row terminal module 4 and a second insulating base 32 disposed at the rear end of the double row terminal module 4. The end face of the second insulating base 32 is provided with a heat dissipation groove 34, and the length direction of the heat dissipation groove 34 is aligned with the length direction of the double row terminal module 4. The second insulating seat 32 is provided with an injection hole 35 corresponding to the connection position of the connector housing 5, and the waterproof injection molded part 71 is connected to the first insulating seat 31 and the second insulating seat 32.

[0031] The insulating fixing seat 3 is an injection-molded insulating carrier, which consists of two parts: a first insulating seat 31 disposed at the front end of the double-row terminal module 4 and a second insulating seat 32 disposed at the rear end of the double-row terminal module 4. The double-row terminal module 4 is firmly integrated with the insulating fixing seat 3 as a whole through an insert injection molding process. The insulating fixing seat 3 can accurately fix each terminal of the double-row terminal module 4, ensuring the relative position accuracy and insulation performance between the terminals, and preventing the terminals from shifting, deforming or short-circuiting during insertion and removal. It should be noted that the insulating fixing seat 3 is used to precisely fix the double-row terminal module 4 to prevent the terminals from shifting or loosening during insertion and removal, thus ensuring the stability of the electrical connection. On the other hand, the first insulating seat 31 and the second insulating seat 32 cooperate with the convex ring 521 to form a reference surface for injection molding and sealing, providing necessary support for the molding of the waterproof injection molded part 71, and is a key transition structure for achieving internal waterproofing.

[0032] In the technical solution of the connector housing 5, the connector housing 5 includes an inner connector housing 51 and an outer connector housing 52. The inner connector housing 51 is inserted into the outer housing along the front end of the outer connector housing 52 and is projectile welded to the outer housing. The rear end of the outer connector housing 52 is integrally formed with the protruding ring 521. The inner surface of the protruding ring 521 is in contact with the outer surface of the front end of the second insulating seat 32. The second insulating seat 32 is provided with an injection hole 35 corresponding to the connection position with the protruding ring 521. The waterproof injection molded part 71 formed by injection molding connects the first insulating seat 31 and the second insulating seat 32.

[0033] It should be noted that the inner connector housing 51 is inserted along the front end of the outer connector housing 52 and is firmly connected to the outer connector housing 52 as a whole through projection welding, forming the insertion cavity of the connector. The rear end housing wall of the outer connector housing 52 is radially bent inward to form a convex ring 521 that protrudes forward axially. The inner surface of the convex ring 521 is in close contact with the front outer surface of the second insulating seat 32 in the insulating fixing seat 3. The outer surface of the outer connector housing 52 has several solder points 522 evenly distributed. In this solution, the connector housing 5 adopts a split projection welding connection structure, which not only ensures the structural strength and electromagnetic shielding performance of the insertion cavity, but also eliminates the inherent gap and water leakage risk of traditional riveting and snap-fit ​​connections, which is an important prerequisite for achieving high waterproof performance.

[0034] It should be noted that the outer surface of the front end of the insulating fixing seat 3 is closely fitted with the protruding ring 521 at the rear end of the connector housing 5, providing the necessary reference surface and support structure for the molding of the waterproof injection molded part 71. Through the injection hole 35 opened on the second insulating seat 32, the injection material can flow in fully and fill all gaps to form a continuous and complete sealing layer.

[0035] Furthermore, in the above scheme, the insulating fixing base 3 has protrusions 33 on both end faces near the opening 12, and the inner shell 2 has a groove 21 on the side near the opening 12 that is adapted to the protrusions 33. The positioning piece 62 is integrally formed with the inner shell 2 and extends outward from the opening 12 in contact with the edge of the protrusions 33.

[0036] The insulating fixing base 3 is housed inside the outer shell 1 and is used to support and fix the insulating carrier of the double-row terminal module 4. The boss 33 is integrally formed on both end faces of the insulating fixing base 3 near the opening 12. The groove 21 is correspondingly opened on the side of the inner shell 2 near the opening 12. The shape and size of the groove 21 are perfectly matched with the boss 33. During assembly, the U-shaped opening 12 of the inner shell 2 is aligned with the insulating fixing base 3, so that the groove 21 on both sides of the inner shell 2 is inserted into the boss 33 on both sides of the insulating fixing base 3. This can achieve rapid rough positioning of the insulating fixing base 3 and the inner shell 2, avoiding large positional deviations in the subsequent assembly process. The cooperation between the boss 33 and the groove 21 not only improves the assembly efficiency, but also provides a benchmark for the precise cooperation of the first positioning block 331 with the first positioning groove 22 and the second positioning block 332 with the second positioning groove 11. At the same time, the boss 33 also provides a fitting support for the positioning piece 62, ensuring the positional accuracy and strength of the positioning piece 62.

[0037] Furthermore, in the above scheme, a first positioning block 331 is provided at the edge where the boss 33 fits with the inner shell 2, and a first positioning groove 22 that matches the shape of the inner shell 2 is provided at the position of the first positioning block 331; a second positioning block 332 is provided at the end face where the boss 33 fits with the outer shell 1, and a second positioning groove 11 that matches the shape of the outer shell 1 is provided at the position of the second positioning block 332.

[0038] The first positioning block 331 and the first positioning groove 22 are designed to achieve secondary precise positioning of the insulating fixing seat 3 and the inner shell 2. The first positioning block 331 is integrally formed at the edge where the boss 33 fits with the inner shell 2. The first positioning groove 22 is correspondingly opened on the inner shell 2 at the position opposite to the first positioning block 331. The two are well-matched in shape. During assembly, when the boss 33 is engaged in the groove 21, the first positioning block 331 is simultaneously engaged in the first positioning groove 22. This effectively limits the relative front-to-back and left-to-right displacement between the inner shell 2 and the insulating fixing seat 3. This mating structure further refines the positioning accuracy based on the pre-positioning, ensuring that the relative position between the positioning piece 62 on the inner shell 2 and the positioning post 61 on the insulating fixing seat 3 remains consistent, thereby ensuring the reference accuracy of the triangular positioning structure 6.

[0039] The second positioning block 332 and the second positioning groove 11 are designed to achieve precise positioning of the insulating fixing seat 3 and the outer shell 1. The second positioning block 332 is integrally formed on the end face of the boss 33 that fits with the outer shell 1. The second positioning groove 11 is correspondingly opened on the outer shell 1 at the position opposite to the second positioning block 332. The two are shaped to fit each other. During assembly, when the outer shell 1 covers the outer side of the inner shell 2 and the insulating fixing seat 3, the second positioning block 332 is simultaneously engaged in the second positioning groove 11, which can effectively limit the vertical and horizontal relative displacement between the outer shell 1 and the insulating fixing seat 3. This matching structure complements the matching structure of the first positioning block 331 and the first positioning groove 22, and together they form a complete positioning system between the insulating fixing seat 3 and the double shell, ensuring the relative positional accuracy between the various components inside the connector.

[0040] The outer shell 1 has an opening 12 on the side of the insulating fixing base 3 that is not covered, and a positioning structure 6 is provided at the opening 12; the connector housing 5 is connected to the front end of the outer shell 1, and a waterproof structure 7 is provided on the connector housing 5. The waterproof structure 7 includes a waterproof injection molded part 71 disposed at the rear end of the connector housing 5 and a waterproof sealing part 72 sleeved at the front end of the connector housing 5. The waterproof injection molded part 71 is a sealing component formed by low-pressure injection molding. It is injected through the injection hole 35 on the second insulating seat 32, filling all the tiny gaps between the inner surface of the convex ring 521 and the insulating fixing seat 3, and completely covering the outer surface of the convex ring 521. At the same time, it firmly connects the first insulating seat 31 and the second insulating seat 32. The waterproof injection molded part 71 seals the assembly gap between the connector housing 5 and the insulating fixing seat 3, forming the first internal waterproof barrier, completely blocking the path of liquid and dust from seeping into the connector from the housing joint. At the same time, the waterproof injection molded part 71 also has a certain elastic buffering effect, which can absorb the impact force generated during insertion and removal, protecting the internal terminals and insulating seats from damage. In this technical solution, the mating structure of the waterproof injection molded part 71 and the convex ring 521 achieves a seamless seal at the housing joint, enabling the connector to achieve the IP68 waterproof standard.

[0041] Furthermore, in the above scheme, the front end of the inner connector housing 51 extends outward along the front end of the outer connector housing 52, and its housing wall is bent outward radially to form an outer skirt 511, and a snap-fit ​​gap 53 is formed between the outer skirt 511 and the outer connector housing 52. The inner wall of the front end of the waterproof seal 72 is bent radially inward to form an inner skirt 721. The waterproof seal 72 is sleeved on the front end of the outer connector housing 52, and the inner skirt 721 is clamped in the snap-fit ​​gap 53. The outer surface of the waterproof seal 72 is provided with a plurality of water-blocking rings 722 arranged at intervals along its axial direction.

[0042] The waterproof seal 72 is a ring-shaped seal molded from silicone material, fitted onto the outer front surface of the connector housing 5. Its inner front wall is bent radially inward to form an inner skirt 721, and its outer surface is provided with 3-5 annular water-blocking rings 722 arranged axially at intervals. During installation, the inner skirt 721 of the waterproof seal 72 is clamped in the snap-fit ​​gap 53 formed between the outer skirt 511 at the front end of the inner connector housing 51 and the front end face of the outer connector housing 52, thus firmly fixing the waterproof seal 72 and preventing it from falling off during use. When the connector is installed on the electronic device, the waterproof seal 72 is compressed between the connector housing 5 and the device housing, and its multiple water-blocking rings 722 are tightly fitted to the inner wall of the device housing in sequence, forming multiple continuous external sealing interfaces, effectively preventing external water, dust and other pollutants from entering the device.

[0043] The positioning structure 6 includes a positioning post 61 disposed on the insulating fixing base 3 and extending outward toward the opening 12, and positioning pieces 62 disposed on both sides of the inner housing 2 and extending outward toward the opening 12. The positioning pieces 62 and the positioning post 61 are arranged in a triangular positioning configuration in the plane. The positioning post 61 is integrally formed on the insulating fixing base 3 and extends outward toward the opening 12. The two positioning pieces 62 are respectively disposed on both sides of the inner housing 2 and extend outward toward the opening 12. The positioning structure 6 solves the welding offset problem and forms a more stable triangular fixing structure. By replacing the traditional straight-line arrangement of the double positioning posts 61 with a triangular positioning layout, the degree of freedom of the connector during the welding process can be restricted, and the welding positioning accuracy can be greatly improved.

[0044] Furthermore, a first fixing structure 8 is provided between the inner shell 2 and the insulating fixing base 3. The first fixing structure 8 includes a first fixing groove 81 formed on both end faces of the insulating fixing base 3 and a first fixing block 82 provided on the inner shell 2 corresponding to the position of the first fixing groove 81.

[0045] The first fixing structure 8 is a structure that firmly connects the inner shell 2 and the insulating fixing base 3. It consists of a first fixing groove 81 opened on both end faces of the insulating fixing base 3 and a first fixing block 82 set on the inner shell 2 corresponding to the position of the first fixing groove 81. During assembly, the first fixing block 82 on the inner shell 2 is pressed into the first fixing groove 81 on the insulating fixing base 3 by a pressing device to form an interference fit press-fit connection. In this solution, the first fixing structure 8 can firmly fix the inner shell 2 and the insulating fixing base 3 together, preventing them from separating during assembly and use, thereby ensuring that the relative position between the positioning piece 62 and the positioning post 61 remains stable. Even under conditions of repeated insertion and removal and severe vibration, the accuracy of the triangular positioning structure 6 will not be affected.

[0046] Furthermore, a second fixing structure 9 is provided between the outer shell 1 and the insulating fixing base 3. The second fixing structure 9 includes a second fixing groove 91 opened on both end faces of the outer shell 1 and a second fixing block 92 disposed on the end face of the boss 33 corresponding to the position of the second fixing groove 91.

[0047] The second fixing structure 9 is a structure that firmly connects the outer shell 1 and the insulating fixing base 3. It consists of a second fixing groove 91 opened on both end faces of the outer shell 1 and a second fixing block 92 set on the end face of the boss 33 corresponding to the position of the second fixing groove 91. During assembly, after the outer shell 1 is in place, the second fixing block 92 automatically snaps into the second fixing groove 91 to form a snap-fit ​​connection. In this solution, the second fixing structure 9 and the first fixing structure 8 form a double fixing guarantee, which further enhances the anti-loosening ability of the overall connector structure and ensures that the outer shell 1, inner shell 2 and insulating fixing base 3 can always maintain a tight connection. This not only improves the mechanical strength of the connector, but also indirectly ensures the sealing reliability of the waterproof structure 7.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A waterproof side-mounted Type-C connector, characterized in that, It includes an outer shell (1), an inner shell (2), an insulating mounting base (3), a double-row terminal module (4), and a connector shell (5); The inner shell (2) is sandwiched between the outer shell (1) and the insulating fixing seat (3). The inner shell (2) covers the three end faces of the insulating fixing seat (3). The outer shell (1) covers the three end faces and the rear part of the insulating fixing seat (3). The outer shell (1) has an opening (12) on the side of the insulating fixing seat (3) that is not covered. The opening (12) has a positioning structure (6). The connector housing (5) is connected to the front end of the outer shell (1), and the connector housing (5) is provided with a waterproof structure (7). The waterproof structure (7) includes a waterproof injection molded part (71) disposed at the rear end of the connector housing (5) and a waterproof sealing part (72) sleeved at the front end of the connector housing (5). At the end face where the connector housing (5) and the outer shell (1) meet, the housing wall is bent inward radially to form an axially protruding convex ring (521). The front end of the insulating fixing seat (3) is inserted into the connector housing (5) and fits against the inner surface of the convex ring (521). The gap between the inner surface of the convex ring (521) and the insulating fixing seat (3) is filled by injection molding to form a waterproof injection molded part (71) covering the outer surface of the convex ring (521). The positioning structure (6) includes a positioning post (61) disposed on the insulating fixing base (3) and extending outward toward the opening (12) and a positioning piece (62) disposed on both sides of the inner shell (2) and extending outward toward the opening (12). The positioning piece (62) and the positioning post (61) are arranged in a triangular position in the plane.

2. The waterproof side-mounted TYPE-C connector according to claim 1, characterized in that, The connector housing (5) includes an inner connector housing (51) and an outer connector housing (52). The inner connector housing (51) is inserted into the outer connector housing (52) along the front end of the outer connector housing (52) and is projectedly welded to the outer connector housing. The rear end of the outer connector housing (52) is integrally formed with the projected ring (521).

3. The waterproof side-insertion TYPE-C connector according to claim 2, characterized in that, The front end of the inner connector housing (51) extends outward along the front end of the outer connector housing (52), and its housing wall is bent outward radially to form an outer skirt (511). A snap-fit ​​gap (53) is formed between the outer skirt (511) and the outer connector housing (52). The inner wall of the front end of the waterproof seal (72) is bent radially inward to form an inner skirt (721). The waterproof seal (72) is sleeved on the front end of the outer connector housing (52), and the inner skirt (721) is sandwiched in the snap-fit ​​gap (53). The outer surface of the waterproof seal (72) is provided with a plurality of water-blocking rings (722) arranged at intervals along its axial direction.

4. The waterproof side-mounted TYPE-C connector according to claim 1, characterized in that, The insulating fixing seat (3) includes a first insulating seat (31) disposed at the front end of the double-row terminal module (4) and a second insulating seat (32) disposed at the rear end of the double-row terminal module (4). The end face of the second insulating seat (32) is provided with a heat dissipation groove (34), and the length direction of the heat dissipation groove (34) is aligned with the length direction of the double-row terminal module (4).

5. The waterproof side-mounted TYPE-C connector according to claim 4, characterized in that, The inner surface of the protruding ring (521) is in contact with the outer surface of the front end of the second insulating seat (32). The second insulating seat (32) is provided with an injection hole (35) corresponding to the connection position of the protruding ring (521). The waterproof injection molded part (71) formed by injection molding connects the first insulating seat (31) and the second insulating seat (32).

6. The waterproof side-mounted TYPE-C connector according to claim 1, characterized in that, The insulating fixing base (3) has protrusions (33) on both sides near the opening (12). The inner shell (2) has a groove (21) on the side near the opening (12) that matches the protrusions (33). The positioning piece (62) is integrally formed with the inner shell (2) and extends outward from the opening (12) along the edge of the protrusions (33).

7. The waterproof side-mounted TYPE-C connector according to claim 6, characterized in that, A first positioning block (331) is provided at the edge where the boss (33) fits with the inner shell (2), and a first positioning groove (22) that matches the shape of the inner shell (2) is provided at the position of the first positioning block (331); a second positioning block (332) is provided at the end face where the boss (33) fits with the outer shell (1), and a second positioning groove (11) that matches the shape of the outer shell (1) is provided at the position of the second positioning block (332).

8. The waterproof side-mounted TYPE-C connector according to claim 1, characterized in that, A first fixing structure (8) is provided between the inner shell (2) and the insulating fixing seat (3). The first fixing structure (8) includes a first fixing groove (81) opened on both sides of the insulating fixing seat (3) and a first fixing block (82) provided on the inner shell (2) corresponding to the position of the first fixing groove (81).

9. The waterproof side-mounted TYPE-C connector according to claim 6, characterized in that, A second fixing structure (9) is provided between the outer shell (1) and the insulating fixing seat (3). The second fixing structure (9) includes a second fixing groove (91) opened on both sides of the outer shell (1) and a second fixing block (92) provided on the end face of the boss (33) corresponding to the position of the second fixing groove (91).

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