A single-sided waterproof electrical connector

Abstract

The application relates to the technical field of connectors, in particular to a single-side waterproof electric connector. The electric connector comprises a shell with a through mounting cavity, an abutting portion is arranged on the inner wall of the middle part of the mounting cavity, and a clamping groove is arranged on the front end inner wall; a positioning sleeve is matched with the inner wall of the mounting cavity and is clamped between the abutting portion and the clamping groove of the mounting cavity, a middle part is provided with a plurality of positioning through holes arranged along the axial direction of the mounting cavity; a conductive pin is inserted into the positioning through hole and is used for electrically connecting with an external circuit; an elastic waterproof part is sleeved on the conductive pin or the positioning sleeve and is used for plugging the gap between the conductive pin and the positioning sleeve or the gap between the positioning sleeve and the mounting cavity; a clamping piece is arranged in the clamping groove and is used for providing supporting force for the positioning sleeve or the elastic waterproof part. The application realizes cost reduction, simple structure, easy disassembly and maintenance, and can meet the waterproof requirements in different environments on the basis of guaranteeing the sealing reliability and durability.

Description

Technical Field

[0001] This application relates to the field of connector technology, and in particular to a single-sided waterproof electrical connector. Background Technology

[0002] With the widespread use of electronic devices in complex environments such as outdoor, automotive, and industrial settings, the waterproof performance of electrical connectors has become a key factor in ensuring reliable equipment operation. Existing connector waterproofing designs typically employ methods such as integral potting, external sealing rings, or multi-layer protection. Integral potting achieves waterproofing by encapsulating the entire connector with waterproof material; while offering significant waterproofing, it is difficult to disassemble and is costly. External sealing rings achieve waterproofing by placing a sealing ring on the outside of the connector; while simple in structure, it is difficult to achieve waterproofing on one side, and the sealing ring is prone to aging or deformation over long-term use. Multi-layer protection achieves waterproofing by stacking multiple waterproof structures; while offering good waterproofing performance, it is structurally complex and costly.

[0003] Regarding the aforementioned technologies, traditional waterproofing technologies suffer from problems such as difficulty in disassembly, complex structure, and insufficient sealing reliability. They cannot simultaneously meet the needs of unilateral waterproofing and low cost, and are difficult to meet the long-term use requirements in complex environments. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application provides a single-sided waterproof electrical connector. Through a multi-seal design, it achieves cost reduction and structural simplicity while ensuring sealing reliability and durability, and is easy to disassemble and maintain, thus meeting the waterproofing requirements in different environments.

[0005] This application is achieved through the following technical solution: Single-sided waterproof electrical connectors, including: The outer casing has a through mounting cavity, with an abutment portion on the inner wall of the middle part of the mounting cavity and a snap-fit ​​groove on the inner wall of the front end; The positioning sleeve is adapted to the inner wall of the mounting cavity and is snapped between the abutment part and the snap-fit ​​groove of the mounting cavity. Several positioning through holes are provided in the middle along the axial direction of the mounting cavity. A conductive pin is inserted into the positioning through hole for electrical connection with an external circuit. Elastic waterproof component, fitted onto conductive needle or positioning sleeve, used to seal the gap between conductive needle and positioning sleeve or the gap between positioning sleeve and mounting cavity; A snap-fit ​​element, disposed in a snap-fit ​​groove, is used to provide support for the positioning sleeve or elastic waterproof component, thereby confining the positioning sleeve or elastic waterproof component between the abutment portion of the mounting cavity and the snap-fit ​​groove.

[0006] By adopting the above technical solution, the positioning sleeve is snapped between the abutment part and the snap-fit ​​groove of the housing mounting cavity, the conductive pin is inserted into the positioning through hole of the positioning sleeve, and at the same time, an elastic waterproof component is installed on the conductive pin or the positioning sleeve to seal the gap. Finally, the snap-fit ​​component is placed in the snap-fit ​​groove to fix the positioning sleeve and the elastic waterproof component. This multi-seal design not only achieves single-sided waterproof function and effectively prevents moisture from entering the connector from the open side, but also reduces costs and simplifies the structure while ensuring sealing reliability and durability. It is also easy to disassemble and maintain, and can meet the waterproof requirements in different environments.

[0007] Optionally, the positioning sleeve includes a first positioning sleeve and a second positioning sleeve; the elastic waterproof component has a disc-shaped structure, is adapted to the inner wall of the mounting cavity, is disposed between the first positioning sleeve and the second positioning sleeve, and the elastic waterproof component has several through holes in the middle that are adapted to the outer diameter of the conductive needle.

[0008] By adopting the above technical solution, the elastic waterproof component has a disc-shaped structure that fits tightly against the inner wall of the mounting cavity. The center of the elastic waterproof component has several through holes that match the outer diameter of the conductive needle, ensuring the sealing performance between it and the outer shell and the conductive needle, and further enhancing the waterproof performance. The elastic waterproof component is positioned between the first positioning sleeve and the second positioning sleeve. The first positioning sleeve and the second positioning sleeve are used to firmly clamp the elastic waterproof component, ensuring that it will not shift during assembly and use, thereby achieving a more reliable waterproof sealing effect.

[0009] Optionally, the elastic waterproof component is provided with a snap-fit ​​post, and the first positioning sleeve or the second positioning sleeve is provided with a snap-fit ​​hole that matches the snap-fit ​​post.

[0010] By adopting the above technical solution, the snap-fit ​​post on the elastic waterproof component, in conjunction with the snap-fit ​​hole on the first or second positioning sleeve, further enhances the fixing stability of the elastic waterproof component, ensuring that it will not shift during use, thereby improving the reliability of the waterproof performance.

[0011] Optionally, the elastic waterproof component is provided with an arc-shaped sealing rib, and the annular sealing rib forms an interference fit with the inner wall of the mounting cavity.

[0012] By adopting the above technical solution, the arc-shaped sealing ribs on the elastic waterproof component form an interference fit with the inner wall of the mounting cavity, further enhancing the sealing performance between the elastic waterproof component and the connector housing.

[0013] Optionally, the first or second positioning sleeve is provided with a plurality of positioning posts arranged along the axial direction of the mounting cavity in the middle, the elastic waterproof component is provided with positioning holes adapted to the positioning posts, and the second positioning sleeve is provided with insertion holes adapted to the positioning posts.

[0014] By adopting the above technical solution, the positioning pins on the first or second positioning sleeve cooperate with the positioning holes on the elastic waterproof component or the insertion holes on the second positioning sleeve, thereby achieving precise positioning and stable fixation of the elastic waterproof component and the second positioning sleeve and the first positioning sleeve. This effectively prevents the elastic waterproof component from shifting during assembly and use, thereby improving the reliability and stability of the waterproof performance.

[0015] Optionally, the inner wall of the positioning through hole is provided with a step, which is adapted to the boss provided on the side wall of the conductive needle.

[0016] By adopting the above technical solution, the inner wall of the positioning through hole is provided with a step, which is adapted to the boss on the side wall of the conductive needle, further enhancing the fixing effect of the conductive needle in the positioning sleeve, preventing the conductive needle from shifting axially or radially during use, and improving the positioning accuracy and stability of the conductive needle.

[0017] Optionally, the elastic waterproof component has a disc-shaped structure that fits the inner wall of the mounting cavity, and the center of the elastic waterproof component is provided with several through holes that fit the outer diameter of the conductive needle; the elastic waterproof component is located at the tail of the positioning sleeve and abuts against the snap-fit ​​component.

[0018] By adopting the above technical solution, the elastic waterproof component has a disc-shaped structure that fits tightly against the inner wall of the mounting cavity, ensuring its sealing performance with the outer shell. The through hole in the middle of the elastic waterproof component is adapted to the outer diameter of the conductive needle, which can tightly wrap the conductive needle and further enhance the sealing effect between the conductive needle and the positioning sleeve. The elastic waterproof component is placed at the tail of the positioning sleeve and abuts against the snap-fit ​​component. This design not only ensures the stability and reliability of the elastic waterproof component during the assembly process, but also further enhances the sealing performance of the elastic waterproof component.

[0019] Optionally, the conductive needle has a first sealing groove on its side wall, and the positioning sleeve has a second sealing groove on its side wall; the elastic waterproof component includes a first sealing ring and a second sealing ring; the first sealing ring is sleeved in the first sealing groove and placed between the conductive needle and the positioning sleeve; the second sealing ring is sleeved in the second sealing groove and placed between the positioning sleeve and the mounting cavity.

[0020] By adopting the above technical solution, the first sealing ring cooperates with the first sealing groove on the conductive pin to effectively seal the gap between the conductive pin and the positioning sleeve; the second sealing ring cooperates with the second seal on the positioning sleeve to further enhance the sealing performance between the positioning sleeve and the mounting cavity. This design achieves multi-layer sealing, which not only significantly improves the waterproof performance of the connector and ensures long-term stable operation in complex environments, but also reduces production costs, simplifies the assembly process, improves production efficiency, and enhances the overall reliability and durability of the connector.

[0021] Optionally, the snap-fit ​​element is a C-shaped snap ring, which abuts against the abutting portion.

[0022] By adopting the above technical solution, the C-shaped retaining ring abuts against the abutting part, providing a stable axial support force for the positioning sleeve, ensuring the positioning sleeve is firmly fixed in the installation cavity, and preventing it from loosening or shifting during use.

[0023] Optionally, the end face of the outer shell is provided with a flexible dustproof end cap, which includes an integrally formed fixing ring and a sealing cap. The fixing ring is sleeved on the end face of the outer shell, and the sealing cap can engage with the outer shell interface to achieve a seal on the outer shell interface.

[0024] By adopting the above technical solution, the sealing cover of the flexible dustproof end cap can effectively prevent dust from entering the interior of the housing and protect the internal components from contamination by snapping the outer shell interface.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. This application achieves a multi-seal design by snapping a positioning sleeve between the abutment part and the snap-fit ​​groove of the housing mounting cavity, inserting a conductive pin into the positioning through hole of the positioning sleeve, and simultaneously installing an elastic waterproof component on the conductive pin or positioning sleeve to seal the gap. Finally, the snap-fit ​​component is placed in the snap-fit ​​groove to fix the positioning sleeve and the elastic waterproof component. This design not only achieves single-sided waterproofing and effectively prevents moisture from entering the connector from the open side, but also reduces costs and simplifies the structure while ensuring sealing reliability and durability. It is also easy to disassemble and maintain, and can meet the waterproofing requirements in different environments.

[0026] 2. In this application, the outer diameter of the conductive pin is adapted to the through hole of the elastic waterproof component and the positioning through hole on the positioning sleeve; the snap-fit ​​post on the elastic waterproof component is adapted to the snap-fit ​​hole on the first or second positioning sleeve; and the positioning post on the first or second positioning sleeve is adapted to the positioning hole on the elastic waterproof component or the insertion hole on the second positioning sleeve. This achieves precise positioning and stable fixation of the elastic waterproof component and the conductive pin, effectively preventing displacement of the elastic waterproof component and the conductive pin during assembly and use, improving the positioning accuracy and stability of the elastic waterproof component and the conductive pin, thereby improving the overall waterproof performance of the connector.

[0027] 3. In this application, the first sealing ring is sleeved in the first sealing groove and placed between the conductive pin and the positioning sleeve; the second sealing ring is sleeved in the second sealing groove and placed between the positioning sleeve and the mounting cavity. This design achieves multi-layer sealing, which not only significantly improves the waterproof performance of the connector and ensures long-term stable operation in complex environments, but also reduces production costs, simplifies the assembly process, improves production efficiency, and enhances the overall reliability and durability of the connector. Attached Figure Description

[0028] Figure 1 This is an exploded view of the single-sided waterproof electrical connector described in Embodiment 1; Figure 2 This is a schematic diagram of the outer shell described in Embodiment 1; Figure 3 This is a schematic diagram of the structure of the first positioning sleeve in Embodiment 1; Figure 4 This is a schematic diagram of the structure of the second positioning sleeve in Embodiment 1; Figure 5 This is a schematic diagram of the conductive needle described in Embodiment 1; Figure 6 This is a structural schematic diagram of the elastic waterproof component described in Embodiment 1; Figure 7 This is a cross-sectional view of the single-sided waterproof electrical connector described in Embodiment 1; Figure 8 This is an exploded view of the single-sided waterproof electrical connector described in Embodiment 2; Figure 9 This is an exploded view of the single-sided waterproof electrical connector described in Embodiment 3; Figure 10 This is an exploded view of the single-sided waterproof electrical connector described in Embodiment 4.

[0029] In the diagram: 1. Outer shell; 11. Mounting cavity; 12. Abutment part; 13. Snap-fit ​​groove; 2. Positioning sleeve; 21. First positioning sleeve; 22. Second positioning sleeve; 23. Positioning through hole; 24. Snap-fit ​​hole; 25. Second sealing groove; 211. Positioning post; 221. Insertion hole; 231. First positioning through hole; 232. Second positioning through hole; 241. First snap-fit ​​hole; 242. Second snap-fit ​​hole; 2321. Step; 3. 1. Conductive needle; 31. Copper needle; 32. Boss; 33. First sealing groove; 4. Elastic waterproof component; 41. Arc-shaped rib; 42. Through hole; 43. Positioning hole; 44. Snap-fit ​​post; 45. First sealing ring; 46. Second sealing ring; 441. First snap-fit ​​post; 442. Second snap-fit ​​post; 5. Snap-fit ​​component; 51. C-shaped snap ring; 6. Module assembly; 7. Flexible dustproof end cap; 71. Fixing ring; 72. Sealing cap. Detailed Implementation

[0030] The technical solutions of various embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Example 1 Reference Figure 1 and2 This application discloses a single-sided waterproof electrical connector, comprising: The outer casing 1 has a through mounting cavity 11, with an abutment part 12 on the inner side wall of the middle part of the mounting cavity 11 and a snap-fit ​​groove 13 on the inner wall of the front end; The positioning sleeve 2 is adapted to the inner wall of the mounting cavity 11 and is engaged between the abutment part 12 and the engagement groove 13 of the mounting cavity 11. Several positioning through holes 23 are provided in the middle along the axial direction of the mounting cavity 11. The conductive pin 3 is inserted into the positioning through hole 23 for electrical connection with the external circuit. The elastic waterproof component 4 is sleeved on the conductive needle 3 or the positioning sleeve 2 to seal the gap between the conductive needle 3 and the positioning sleeve 2 or the gap between the positioning sleeve 2 and the mounting cavity 11. The snap-fit ​​element 5 is disposed in the snap-fit ​​groove 13 and is used to provide support for the positioning sleeve 2 or the elastic waterproof element 4 to limit the positioning sleeve 2 or the elastic waterproof element 4 between the abutment portion 12 of the mounting cavity 11 and the snap-fit ​​groove 13.

[0032] Specifically, refer to Figure 1 and 2 The outer casing 1 is made of insulating materials such as plastic and has a through mounting cavity 11 with a diameter of 50~100mm. The inner wall of the middle part of the mounting cavity 11 is provided with an annular abutment part 12, and the inner wall of the front end is provided with a snap-fit ​​groove 13. The end face of the outer casing 1 is provided with a flexible dustproof end cover 7. The flexible dustproof end cover 7 is made of rubber material and includes an integrally formed fixing ring 71 and a sealing cover 72. The fixing ring 71 is sleeved on the end face of the outer casing 1, and the sealing cover 72 is snapped with the rear end of the outer casing 1 to achieve a seal on the interface of the outer casing 1, effectively preventing dust from entering the interior of the outer casing 1 and protecting the internal components from contamination.

[0033] Specifically, refer to Figure 3 and 4 The positioning sleeve 2 includes a first positioning sleeve 21 and a second positioning sleeve 22, which are combined to form the first positioning sleeve 21 and the second positioning sleeve 22. The first positioning sleeve 21 is provided with a first positioning through hole 231 and a positioning post 211. The second positioning sleeve 22 is provided with a second positioning through hole 232 and an insertion hole 221. The inner wall of the second positioning through hole 232 is provided with a step 2321. Both the first positioning sleeve 21 and the second positioning sleeve 22 are made of insulating material. The diameters of the first positioning through hole 231 and the second positioning through hole 232 are both 10~30mm. The outer diameter of the positioning post 211 is 15~30mm, and the diameter of the insertion hole 221 is 15~30mm.

[0034] Reference Figures 3-5The conductive needle 3 is made of several copper needles 31 with a length of 50~120mm and an outer diameter of 10~30mm. A boss 32 is provided on the side wall. The conductive needle 3 is adapted to the first positioning through hole 231 of the first positioning sleeve 21 and the second positioning through hole 232 of the second positioning sleeve 22. The positioning post 211 of the first positioning sleeve 21 is adapted to the insertion hole 221 on the second positioning sleeve 22.

[0035] Reference Figures 4-6 The elastic waterproof component 4 is made of silicone material and has a disc-shaped structure with a diameter of 50~100mm. The upper side of the elastic waterproof component 4 is provided with an arc-shaped rib 41, and the middle is provided with several through holes 42 that are compatible with the conductive needle 3 with a diameter of 10~30mm. The outside is provided with several positioning holes 43 that are compatible with the insertion holes 221 on the second positioning sleeve 22 with a diameter of 15~30mm.

[0036] Reference Figure 7 When assembling the conductive needle 3 with the positioning sleeve 2, the conductive needle 3 is inserted into the second positioning through hole 232 of the second positioning sleeve 22, ensuring that the boss 32 of the conductive needle 3 is tightly fitted with the step 2321 of the second positioning through hole 232. The elastic waterproof component 4 is inserted into the positioning post 211 of the first positioning sleeve 21 through the positioning hole 43. The combination of the conductive needle 3 and the second positioning sleeve 22 is inserted into the combination of the elastic waterproof component 4 and the first positioning sleeve 21 through the first positioning through hole 231, ensuring that the conductive needle 3 passes smoothly through the through hole 42 of the elastic waterproof component 4 and the second positioning through hole 232 of the second positioning sleeve 22, and fits tightly. At the same time, the positioning post 211 on the first positioning sleeve 21 is engaged with the insertion hole 221 on the second positioning sleeve 22, further enhancing the structural stability of the entire component and forming the module component 6.

[0037] Reference Figure 7 The snap-fit ​​component 5 is a C-shaped snap ring 51. The module assembly 6 is installed into the mounting cavity 11 of the housing 1, ensuring that the module assembly 6 fits tightly against the inner wall of the mounting cavity 11, and the middle part of the module assembly 6 abuts against the abutting part 12 in the middle of the mounting cavity 11. The C-shaped snap ring 51 is placed into the snap-fit ​​groove 13 at the front end of the housing 1, ensuring that the C-shaped snap ring 51 can provide stable support for the module assembly 6 and limit the module assembly 6 between the abutting part 12 and the snap-fit ​​groove 13 in the mounting cavity 11, thereby achieving a stable fixation of the module assembly 6 in the mounting cavity 11.

[0038] The implementation principle of this embodiment is as follows: by precisely matching the conductive pin 3 with individual components such as the first positioning sleeve 21, the second positioning sleeve 22, and the elastic waterproof component 4 and assembling them into a modular assembly 6, the entire modular assembly 6 is then installed into the mounting cavity 11 of the outer shell 1. The C-shaped retaining spring 51 provides support and securely fixes it. At the same time, with the sealing performance of the elastic waterproof component 4 and the protective function of the flexible dustproof end cap 7, the connector achieves unilateral waterproofing in complex environments, ensuring that the internal circuit is protected from moisture and dust, and guaranteeing the stability and reliability of the electrical connection.

[0039] Example 2 Reference Figure 8 The difference between this embodiment and embodiment one is that a second snap-fit ​​hole 242 is provided on the second positioning sleeve 22, and a first snap-fit ​​post 441 adapted to the second snap-fit ​​hole 242 is provided on the elastic waterproof component 4. Specifically, the second snap-fit ​​hole 242 is provided on the second positioning sleeve 22, and the elastic waterproof component 4 can be embedded into the second positioning sleeve 22 by in-mold injection molding to form an integral assembly, thereby making the second positioning sleeve 22 and the elastic waterproof component 4 integrally formed; wherein the diameter of the second snap-fit ​​hole 242 is 10~20mm.

[0040] The implementation principle of this embodiment is as follows: the elastic waterproof pad and the second positioning sleeve 22 are tightly combined through in-mold injection molding to form an integrated component. Then, the conductive pin 3 and the first positioning sleeve 21 are installed in sequence. The integrated component is then installed into the mounting cavity 11 of the housing 1. The C-shaped retaining spring 51 provides support and fixes it firmly. At the same time, with the sealing performance of the elastic waterproof component 4 and the protective function of the dustproof end cap, the connector can achieve single-sided waterproof function in complex environments. This design improves the stability and reliability of the sealing performance and reduces assembly steps.

[0041] Example 3 Reference Figure 8 and 9 The difference between this embodiment and the first embodiment is that the second positioning sleeve 22 is omitted, the elastic waterproof component 4 is made of silicone and is provided with a second snap-fit ​​post 442, the first positioning sleeve 21 is provided with a first snap-fit ​​hole 241, the elastic waterproof component 4 is assembled behind the first positioning sleeve 21 through the first snap-fit ​​hole 241, and after the connector is assembled as a whole, it is sealed with glue.

[0042] Specifically, the copper needle 31 is inserted into the positioning through hole 23 of the first positioning sleeve 21, and the elastic waterproof component 4 is fitted onto the copper needle 31 through the through hole 42. The first snap-fit ​​hole 241 on the first positioning sleeve 21 is snapped into the second snap-fit ​​post 442 on the elastic waterproof component 4. The diameter of the second snap-fit ​​hole 242 is 15~30mm. The whole assembly is installed into the outer shell 1, and the C-shaped retaining spring 51 and the flexible dustproof end cap 7 are installed in sequence. Finally, the glue is applied for sealing.

[0043] The implementation principle of this embodiment is as follows: By using a first positioning sleeve 21 made of silicone material, utilizing its good elasticity and sealing performance, combined with the snap-fit ​​cooperation between the first snap-fit ​​hole 241 on the first positioning sleeve 21 and the second snap-fit ​​post 442 on the elastic waterproof component 4, and the adhesive sealing performed after the overall assembly, a single-sided waterproof function is achieved. This design not only effectively seals the gap between the conductive pin 3 and the outer shell 1, ensuring the waterproof performance of the connector in complex environments, but also simplifies the assembly process, reduces production costs, and maintains the simplicity and ease of maintenance of the structure.

[0044] Example 4 Reference Figure 10 The difference between this embodiment and embodiment one is that the positioning sleeve 2 is an independent body, the elastic waterproof component 4 includes a first sealing ring 45 and a second sealing ring 46, and a first sealing groove 33 is opened on the side wall of the conductive pin 3, and a second sealing groove 25 is opened on the side wall of the positioning sleeve 2. The first sealing ring 45 is fitted in the first sealing groove 33 and placed between the conductive pin 3 and the positioning sleeve 2, and the second sealing ring 46 is fitted in the second sealing groove 25 and placed between the positioning sleeve 2 and the mounting cavity 11. After the connector is assembled as a whole, it is sealed with glue.

[0045] Specifically, the conductive pin 3 with the first sealing ring 45 is inserted into the positioning sleeve 2 with the second sealing ring 46 through the positioning through hole 23. The diameter of the first sealing ring 45 is 10~30mm and the diameter of the second sealing ring 46 is 50~100mm. Then the whole assembly is installed into the outer shell 1, and the C-shaped retaining ring 51 and the flexible dustproof end cap 7 are installed in sequence. Finally, the adhesive is applied for sealing.

[0046] The implementation principle of this embodiment is as follows: A first sealing groove 33 is provided on the side wall of the conductive pin 3, and a second sealing groove 25 is provided on the side wall of the positioning sleeve 2. A first sealing ring 45 and a second sealing ring 46 are respectively fitted into the first sealing groove 33 and the second sealing groove 25. The first sealing ring 45 seals the gap between the conductive pin 3 and the positioning sleeve 2, and the second sealing ring 46 seals the gap between the positioning sleeve 2 and the outer shell 1, thereby achieving a double sealing effect. After the connector is assembled, adhesive is applied for sealing. This multi-seal design significantly enhances the connector's waterproof performance, ensuring long-term stable operation in complex environments. Simultaneously, the integrated molding of the positioning sleeve 2 reduces assembly steps and the number of parts, improving production efficiency and the overall stability of the connector.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this application.

Claims

1. A single-sided waterproof electrical connector, characterized in that, include: The outer shell (1) has a through mounting cavity (11), and the mounting cavity (11) has an abutment part (12) on the inner side wall of the middle part and a snap-fit ​​groove (13) on the inner wall of the front end. The positioning sleeve (2) is adapted to the inner wall of the mounting cavity (11) and is snapped between the abutment part (12) and the snap groove (13) of the mounting cavity (11). Several positioning through holes (23) are provided in the middle along the axial direction of the mounting cavity (11). The conductive pin (3) is inserted into the positioning through hole (23) for electrical connection with the external circuit. The elastic waterproof component (4) is fitted onto the conductive needle (3) or the positioning sleeve (2) to seal the gap between the conductive needle (3) and the positioning sleeve (2) or the gap between the positioning sleeve (2) and the mounting cavity (11). A snap-fit ​​element (5) is disposed in a snap-fit ​​groove (13) to provide support for the positioning sleeve (2) or the elastic waterproof element (4) to confine the positioning sleeve (2) or the elastic waterproof element (4) between the abutment portion (12) of the mounting cavity (11) and the snap-fit ​​groove (13).

2. The single-sided waterproof electrical connector according to claim 1, characterized in that, The positioning sleeve (2) includes a first positioning sleeve (21) and a second positioning sleeve (22); the elastic waterproof component (4) has a disc-shaped structure, which is adapted to the inner wall of the mounting cavity (11), and is located between the first positioning sleeve (21) and the second positioning sleeve (22), and the elastic waterproof component (4) has several through holes (42) in the middle that are adapted to the outer diameter of the conductive needle (3).

3. The single-sided waterproof electrical connector according to claim 2, characterized in that, The elastic waterproof component (4) is provided with a snap-fit ​​post (44), and the first positioning sleeve (21) or the second positioning sleeve (22) is provided with a snap-fit ​​hole (24) that is compatible with the snap-fit ​​post (44).

4. A single-sided waterproof electrical connector according to claim 2, characterized in that, The elastic waterproof component (4) is provided with an arc-shaped sealing rib, which forms an interference fit with the inner wall of the mounting cavity (11).

5. A single-sided waterproof electrical connector according to claim 2, characterized in that: The first positioning sleeve (21) or the second positioning sleeve (22) has a plurality of positioning posts (211) arranged along the axial direction of the mounting cavity (11) in the middle, and the elastic waterproof component (4) has positioning holes (43) that are adapted to the positioning posts (211).

6. A single-sided waterproof electrical connector according to claim 1, characterized in that: The inner wall of the positioning through hole (23) is provided with a step (2321), which is compatible with the boss (32) provided on the side wall of the conductive needle (3).

7. A single-sided waterproof electrical connector according to claim 1, characterized in that: The elastic waterproof component (4) has a disc-shaped structure that is adapted to the inner wall of the mounting cavity (11), and the center of the elastic waterproof component (4) is provided with several through holes (42) that are adapted to the outer diameter of the conductive needle (3); the elastic waterproof component (4) is located at the tail of the positioning sleeve (2) and abuts against the snap fastener (5).

8. A single-sided waterproof electrical connector according to claim 1, characterized in that: The conductive needle (3) has a first sealing groove (33) on its side wall, and the positioning sleeve (2) has a second sealing groove (25) on its side wall; the elastic waterproof component (4) includes a first sealing ring (45) and a second sealing ring (46); the first sealing ring (45) is fitted in the first sealing groove (33) and placed between the conductive needle (3) and the positioning sleeve (2); the second sealing ring (46) is fitted in the second sealing groove (25) and placed between the positioning sleeve (2) and the mounting cavity (11).

9. A single-sided waterproof electrical connector according to claim 1, characterized in that, The snap-fit ​​component (5) is a C-shaped snap ring (51), which abuts against the abutting part (12).

10. A single-sided waterproof electrical connector according to claim 1, characterized in that, The end face of the outer shell (1) is provided with a flexible dustproof end cap (7). The flexible dustproof end cap (7) includes an integrally formed fixing ring (71) and a sealing cap (72). The fixing ring (71) is sleeved on the end face of the outer shell (1), and the sealing cap (72) can engage with the interface of the outer shell (1) to achieve sealing of the interface of the outer shell (1).

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